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Sample records for analysis avaliacao energetica

  1. Energetic evaluation: public schools sector; Avaliacao energetica: setor escolas publicas

    Energy Technology Data Exchange (ETDEWEB)

    Jota, Patricia Romeiro da Silva; Ribeiro, Mariane Correa; Martins, Fernando Henrique Dias; Silva, Valeria R. Borges da [Centro Federal de Educacao Tecnologica de Minas Gerais (CEFET-MG), Belo Horizonte, MG (Brazil). Centro de Pesquisa em Energia Inteligente

    2010-07-01

    Energy consumption evaluation at schools is very important for school management. However, there is a great difference among consumption rates, and a simplified analysis would lead to wrong evaluation. It is not possible to analyze schools that have different number of students or different sizes, unless these variables are applied. This article proposes a methodology in order to develop a sector analysis taking into account operation features. A case study is presented to illustrate this methodology. (author)

  2. Proposal for the optimization of the procedures for the analysis, assessment and follow-up of energy efficiency at the Manaus Energia S/A enterprise environment; Proposta de otimizacao dos procedimentos para analise, avaliacao e acompanhamento de projetos de eficiencia energetica no ambito da empresa Manaus Energia S/A

    Energy Technology Data Exchange (ETDEWEB)

    Costa Junior, Benjamim Cordeiro [Manaus Energia S/A., AM (Brazil). Programa de Eficiencia Energetica e Pesquisa e Desenvolvimento

    2006-07-01

    The present article has for objective, to present a proposal to optimize the procedures for analysis and evaluation of projects that composes the annual Program of Energy Efficiency of Manaus Energia S/A, assisting to criteria of market prices, sustainability and return for the company. (author)

  3. Neutron activation analysis at the 'Instituto de Pesquisas Energeticas e Nucleares' (SP, Brazil)

    International Nuclear Information System (INIS)

    Vasconcellos, M.B.A.

    1984-01-01

    A review of the work carried out at IPEN using neutron activation analysis is made. The main characteristics of the technique and general experimental procedures applied for different samples and elements are reported. Geological samples were analysed by using activation with thermal, epithermal and delayed neutrons (for U and Th, specifically). Metallic samples were analysed for several elements in trace amounts (Ta in Nb, Hg in steel, Sn, Sb, As, Cu, Cr and Ag in a tin-lead alloy). Biological materials, such as tomatoes, animal and human viscera, food, hair, nails were also analysed for several components (Hg, Na, K, As, Au and others). (Author) [pt

  4. Evaluation of energy efficiency of climatization system in dairy cattle free-stall; Avaliacao da eficiencia energetica de sistemas de climatizacao em galpoes tipo 'free-stall' para confinamento de bovinos leiteiros

    Energy Technology Data Exchange (ETDEWEB)

    Perissinoto, Mauricio [Escola Superior de Agricultura Luiz de Queiroz (ESALQ/USP), Piracicaba, SP (Brazil). Dept. de Engenharia Rural. Setor de Construcoes Rurais], Email: mperissi@esalqusp.br; Moura, Daniella Jorge de; Lima, Karla Andrea Oliveira de; Mendes, Angelica Signor [Universidade Estadual de Campinas (FEAGRI/UNICAMP), SP (Brazil). Fac. de Engenharia Agricola; Matarazzo, Soraia Vanessa

    2006-07-01

    The objective of this research was the evaluation of the economical efficiency, in relation to water and energy expenses, of two different evaporative cooling systems, misting and sprinkler, associated with forced ventilation. The study was carried out in a commercial dairy cattle farm located in a small city of Sao Paulo State. The experimental period was twenty-eight consecutive days of November 2003. For the economical analysis of each system of climatization the cost with electrical energy and water expended in each system was considered and also the feeding consumption. The sprinkling cooling system presented a greater consumption of water and energy than the misting system. Even those treatments promoting similar feed intake (the difference was 3.0 kg DM.animal{sup -1}.month{sup -1}), the sprinkling system associated to forced ventilation led to an increase (18.0 liters.animal{sup -1}.month{sup -1}) of 3% in milk production. As consequence, it was observed an increase of 5,8% in total month profit in relation to misting system. (author)

  5. Energy analysis in Cynodon dactylon (L.) Pers hay production; Analise energetica na producao de feno de Cynodon dactylon (L.) Pers

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Alessandro T. [UNIOESTE, Marechal Candido Rondon, PR (Brazil). Centro de Ciencias Agrarias]. E-mail: atcampos3@yahoo.com.br; Saglietti, Jose R.C.; Bueno, Osmar C. [UNESP, Botucatu, SP (Brazil). Facudade de Ciencias Agronomicas; Campos, Aloisio T. [EMBRAPA - Gado de leite, Juiz de Fora, MG (Brazil)

    2005-05-15

    The aim of this work was to characterize the energy consumption related to the introduction, development, hay processing and storage of Cynodon dactylon (L.) Pers allied to the analysis of the energetic efficiency. The data used in this project were collected from EMBRAPA Gado de Leite, localized in Coronel Pacheco, Minas Gerais, Brazil. The data were obtained from a seven year period of an intensive system of milk production. Energetic coefficients were used to generate the survey and several matrix components obtained from pertinent literature. The direct energy, related to the inputs, showed more efficient participation on the energetic matrix than the indirect energy and the percentages were 94.64 and 5.31, respectively. Farm tractor was the main indirect energy consumer, which is responsible for turning on all the equipment, followed by the irrigation system. The energetic efficiency presented by the whole system was 4.2, being considered positive and demonstrating that the agriculture ecosystem is sustainable. Most of the direct energy employed in this system was oil derived on fuel form. There was, however, a great consume of another oil derived energy such as fertilizer, but mainly on the nitrogen form (28.89% of the total employed energy). (author)

  6. Analysis of energetic efficiency in stenters of textile industry; Analise de eficiencia energetica em ramas de industria textil

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Antonio Rogerio; Ferraz, Andre; Rocha, Ivan; Azevedo, Jorge; Oshiro, Hugo K.; Konishi, Ricardo; Piazza, Walter; Lehmkuhl, Willian [Companhia de Gas de Santa Catarina (SCGAS), Florianopolis, SC (Brazil)

    2011-12-21

    This paper presents the research on the use of alternative energy within the textile industry: a strategy aimed at reducing costs and securing market share. The use of natural gas allows for the direct heating and drying of textiles through convection, instead of the conventional indirect heating method of thermal fluids. This measure alone reduces significantly the energy costs and grants the process superior efficiency and sustainability. This case examines the improvements to the process of drying textiles through thermal equipment called stenters, whose purpose is to remove humidity from the cloth during its fabrication. As such, SCGAS, in association with FURB, has performed an operational and technological evaluation of the drying process used by a customer enterprise. The data collected enabled the researchers to map all sources (inputs and outputs) of mass and energy for each different stenter. This composed the basis for the analysis done and the subsequent proposal of improvements, which varied from the conversion of stenter from indirect to direct heating and the development of even more energy efficient solutions for the direct heating system. The data obtained shows that, for the indirect heating system, 28% of the thermal energy produced could be recovered, given the temperature of the exhaust gases reached 360 deg C. The indirect heating stenters presented energy efficiency between 24% and 27%, whiles the direct heating ones presented between 27,4% and 34,8%. Additionally, if an automated control system for the natural gas and oxidizing air flows was to be installed, it would guarantee greater quality combustion with a significant increase in energy efficiency, as well as a decrease in carbon monoxide emissions by a factor of eight. (author)

  7. Energy evaluation of soil preparation for deployment of the eucalyptus culture: a subsidy for sustainable analysis; Avaliacao energetica do preparo do solo para implantacao da cultura de eucalipto: subsidio para uma analise de sustentabilidade

    Energy Technology Data Exchange (ETDEWEB)

    Bueno, Osmar de Carvalho [Universidade Estadual Paulista (UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Dept. de Gestao e Tecnologia Agroindustrial; Quintana, Nuria Rosa Gagliardi [Universidade Estadual Paulista (UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Programa de Pos-Graduacao em Energia na Agricultura

    2004-07-01

    The knowledge of the production and expenditure of energy for the agriculture are fundamental due, among other factors, to the strategic importance that occupies as producing of energy input for other economic sections. With the objective of presenting the participation of the several energy types employees in the soil prepare for implantation of the eucalyptus culture, this work is constituted in a contribution regarding the subject of the sustain grow. It was determined that the field hypothetical to be prepared possesses soil with sandy texture and raise plan or soft-wavy, where the minimum cultivation of the soil allows without problems, the use of 'subsolador florestal multifuncional'. The silviculture practical, linked to the minimum cultivation of the soil in the implantation of the culture was: liming, court of the residues and roots, subsoil, basic fertilizing, control chemical of undesirable plants and control chemical of ants. The technical coefficients, the work day, the revenue, the identification of the tractors, implements and equipment; its specifications and respective consumption of fuel, lubricants and greases, besides the quantification of the labor used by silviculture practical, were certain starting from collected secondary data. The adopted methodological procedures were based in literature revision. In agreement with the obtained results, it was ended that of the total of energy maid's 3.309,62 MJ for hectare in the soil prepare, it is had the participation of 83,30% of industrial energy, 16,52% of fossil energy and 0,18% of biological energy. It was verified like this that the dependence of the industrial energy and of the fossil energy in the soil prepare. In that way, we suggest himself the search of the use of another types of energy that they allow the energy sustainability of this agro-ecosystems. (author)

  8. An energetic analysis of a Chinese type bio digester in Brazil; Uma analise energetica de um biodigestor tipo chines no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Raad, Antonio; Moreira, Marco A.R.G.; Rebello, Renata B.M. [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia

    1996-12-31

    The energetic analysis has proved to be an important instrument for the evaluation of energetic alternatives concerning strategies objectives through the analysis of a Chinese type bio digester in the Brazilian use situation this work demonstrates that the technology is viable for Brazilian countryside areas 11 refs., 4 tabs.

  9. Energetic intensity and exportation: an analysis of the period 1997-2004; Intensidade energetica e exportacao: uma analise do periodo 1997-2004

    Energy Technology Data Exchange (ETDEWEB)

    Soares, Munir Younes; Bermann, Celio [Universidade de Sao Paulo (USP), SP (Brazil). Programa Interunidades de Pos-Graduacao em Energia (PIPGE)]. E-mails: munir@iee.usp.br; muniryounes@yahoo.com.br; cbermann@iee.usp.br; Cavaliero, Karla Kazue Nakao [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Fac. de Engenharia Mecanica. Programa de Pos-graduacao em Planejamento de Sistemas Energeticos]. E-mail: cavaliero@fem.unicamp.br

    2006-07-01

    This paper aims to analyze the course of industrial energy intensity from 1997 to 2004. A historical retrospective was done in order to explain how the Brazilian industrial option has been influencing the profile of this index, demonstrating that Brazil is following a different trajectory in comparison to the developed countries. To achieve this, an analysis was conducted of the whole metallurgical industry, along with the paper, cellulose and mineral industries and the total Brazilian Industry. The energy intensity, the elasticity energy consume product and the export quantum indicators were calculated for the industry and for each sub sector. To conclude, the results will be discussed and commented. (author)

  10. Comparative exergoeconomic analysis of prime movers of cogeneration plants; Avaliacao exergoeconomica comparativa de acionadores primarios de plantas de cogeracao

    Energy Technology Data Exchange (ETDEWEB)

    Donatelli, Joao L.M. [Espirito Santo Univ., Vitoria, ES (Brazil). Dept. de Engenharia Mecanica]. E-mail: donatelli@lttc.com.ufrj.br; Vieira, Leonardo S.R. [Centro de Pesquisas de Energia Eletrica, Rio de Janeiro, RJ (Brazil). Area de Conhecimento de Materiais e Mecanica]. E-mail: lsrv@cepel.br; Cruz, Manuel E.C. [Universidade Federal, Rio de Janeiro, RJ (Brazil). Dept. de Engenharia Mecanica]. E-mail: manuel@serv.com.ufrj.br

    2000-07-01

    In this paper we apply exergoeconomic principles to perform a comparative analysis of the use of internal combustion engines or gas turbines as prime movers of cogeneration plants. A preliminary comparison of these movers can be obtained by analysing them individually, considering the complete utilization of the generated products rated on a common exergetic basis. However, when these movers are integrated in a cogeneration plant, it is necessary to perform a global system analysis, which will consider the coupling between generation capacity and demand, under the design conditions. The design of a cogeneration plant should, ideally, consider all the aspects that affect its performance. In this paper we take into account several aspects which are not normally collectively considered in similar analyses encountered in the literature. Specifically, the comparative procedure considers the electrical tariff on an hourly basis, the electrical and thermal load profiles, the influence of the environmental conditions on the performance of the prime movers, sizing and operation mode options to meet plant loads, part-load efficiency, different criteria for cost partitioning, and, finally, the effect of size on plant cost. Once the operating conditions of the cogeneration plant are defined, the procedure attributes costs to all the fluxes, allowing for the identification of the ranges of capacity where each mover is economically advantageous. We apply the procedure to the energetic supply analysis of a typical process of Brazilian shopping centers. (author)

  11. Analysis of implementation of energy efficiency labeling of buildings in hotel developments; Analise da aplicacao da etiquetagem de eficiencia energetica de edificacoes em empreendimentos hoteleiros

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Myrthes Marcele Farias dos; Faria, Ricardo Wargas de; Hamada, Luciana; Nascimento, Paulo Roberto Lopes do [Servico Brasileiro de Apoio as Micro e Pequenas Empresas (SEBRAE), Rio de Janeiro, RJ (Brazil). Programa de Energia e Eficiencia Energetica

    2010-07-01

    Most Brazilian constructions have low performance in terms of energy, since they received little attention (or none) concerning the energy efficiency. One of the main aspects observed is the intense use of electric energy for climatization and lighting in order to provide comfortable conditions for the dwellers. In 2009, new perspectives to change this situation emerged, due to an initiative by the Federal Government, that established the necessary regulations for energy efficiency labelling in buildings, and broadened the Brazilian Labelling Program (PBE), which, up until then, encompassed only machinery and equipment. The purpose of this article is to analyze the compliance with the new regulations for energy efficiency of constructions in the hotel sector, where small businesses are predominant, aiming at highlighting the barriers and opportunities connected to the possibilities of labeling. Hotels have been targeted for large investments, since they have become the pillars of Brazil's project to welcome tourists during the 2014 World Cup and the 2016 Olympic Games. Taking into consideration the need to develop specific methodologies for lodging possibilities, in addition to the scarce information on the use of energy in small businesses, this article is part of a series of researches carried out within the framework of the Sebrae/RJ - Procel Agreement. The outcome is a global analysis, from a business point of view, on the use of labels of energy efficiency in hotel buildings, organized upon two perspectives: the external environment (opportunities and threats) and the internal environment (strong and weak points). (author)

  12. Analysis of implementation of energy efficiency labeling of buildings in hotel developments; Analise da aplicacao da etiquetagem de eficiencia energetica de edificacoes em empreendimentos hoteleiros

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Myrthes Marcele Farias dos; Faria, Ricardo Wargas de; Hamada, Luciana; Nascimento, Paulo Roberto Lopes do [Servico Brasileiro de Apoio as Micro e Pequenas Empresas (SEBRAE), Rio de Janeiro, RJ (Brazil). Programa de Energia e Eficiencia Energetica

    2010-07-01

    Most Brazilian constructions have low performance in terms of energy, since they received little attention (or none) concerning the energy efficiency. One of the main aspects observed is the intense use of electric energy for climatization and lighting in order to provide comfortable conditions for the dwellers. In 2009, new perspectives to change this situation emerged, due to an initiative by the Federal Government, that established the necessary regulations for energy efficiency labelling in buildings, and broadened the Brazilian Labelling Program (PBE), which, up until then, encompassed only machinery and equipment. The purpose of this article is to analyze the compliance with the new regulations for energy efficiency of constructions in the hotel sector, where small businesses are predominant, aiming at highlighting the barriers and opportunities connected to the possibilities of labeling. Hotels have been targeted for large investments, since they have become the pillars of Brazil's project to welcome tourists during the 2014 World Cup and the 2016 Olympic Games. Taking into consideration the need to develop specific methodologies for lodging possibilities, in addition to the scarce information on the use of energy in small businesses, this article is part of a series of researches carried out within the framework of the Sebrae/RJ - Procel Agreement. The outcome is a global analysis, from a business point of view, on the use of labels of energy efficiency in hotel buildings, organized upon two perspectives: the external environment (opportunities and threats) and the internal environment (strong and weak points). (author)

  13. Proceedings of the 9 annual conference of the Mexican association for the energy economy. The energy security; 7. Conferencia anual de la asociacion mexicana para la economia energetica. seguridad energetica

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    The Asociacion Mexicana para la Economia Energetica (Mexican Association for the Energy Economy) summoned by the ninth occasion to its annual congress under the subject Power Assurance with the objective of analyzing the Power Assurance of Mexico in terms of general accessibility to power resources, of reliable and total availability of these, and their acceptability in relation to the environment; analysis from which recommendations of power policy will be derived. Six panels were constituted around the following analysis points: The geopolitical surroundings, certainties and uncertainties - where the irruption of new Asian demanding countries is analyzed, the uncertain continuity of provisions in Europe and the new power Latin American nationalism as tension centers and new areas of stressfulness are also analyzed -, energy Balances and markets in the American continent - focused on the type of anticipated evolution of the availability of oil and natural gas in Mexico along with its processing capacity -, Assurance of raw materials for the electrical generation - in direct relation with the present and future availability of own conventional resources, the characteristics and behavior of energy international markets of primary energy sources and of the access to technologies such as nuclear power stations-. Assurance of raw materials for the transport and the industry - focused on the resolution of the bottle necks that sometimes its availability is put under -. The energy assurance and the medium and long term development - knowing that the energy sector in Mexico is co-dependent and the decision making with respect to its financing must be based on realities and not in fantasies -, Policies for the power assurance - where a summary is presented, conclusions and recommendations of energy policy; the medium and long term attention requires to be initiated now. [Spanish] La Asociacion Mexicana para la Economia Energetica convoco por novena ocasion a su congreso

  14. Integral energy policy; Politica energetica integral

    Energy Technology Data Exchange (ETDEWEB)

    Bazan Navarrete, Gerardo [Programa Universitario de Energia, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

    2006-11-15

    The guidelines of energy policy are normative directions that govern the energy sector and its relations with different objects, these guidelines must be in agreement with the national objectives so that they collaborate to its accomplishment. Camara Nacional de la Industria y Trasnformacion (CANACINTRA) and the University Program of Energy made a diagnosis and long term prospective of the Energy Sector. With the design of five possible growth scenarios to year 2030 the total demand of energy required for the 2030 was calculated with the purpose of determining the mixture of the primary energy sources to satisfy the projected demand. With such data a decalogue of recommendations was formulated that appeal for better policies of organization and action, promotions and forecasts to obtain an optimal national performance, competitive at international level. [Spanish] Los lineamientos de politica energetica son orientaciones normativas que rigen el sector energetico y sus relaciones con distintos objetos, estos lineamientos deben estar a tono con los objetivos nacionales de modo que colaboren a su realizacion. Camara Nacional de la Industria de Transformacion (CANACINTRA) y el Programa Universitario de Energia realizaron un diagnostico y prospectiva a largo plazo del sector energia. Con el diseno de cinco posibles escenarios de crecimiento al 2030 se calculo la demanda total de energia requerida para el 2030 con el fin de determinar la mezcla de energeticos primarios para satisfacer la demanda proyectada. Con tales datos se conformo un decalogo de recomendaciones que apelan a mejores politicas de organizacion y accion, fomentos y previsiones para lograr un optimo desempeno energetico nacional, competitivo a nivel internacional.

  15. Normalization of the energy efficiency in pumping systems; Normalizacion de eficiencia energetica en sistemas de bombeo

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, R.A.; Buendia Dominguez, E.H. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1995-12-31

    The Instituto de Investigaciones Electricas (IIE), supporting the Comision Nacional para el Ahorro de Energia (CONAE) has prepared the preliminary project of the norm of energetic efficiency for pumping systems, specifically for the agricultural sector. This document has complied with the necessary formalities for the issue of a norm and is about to be published as a Mexican Official Norm of energetic efficiency. In this paper mention is made of the results in the analysis of the pumping systems in operation, the energy saving, as well as the economic evaluation that sustain the norm project, indicating besides the environmental impact that its implantation will have. [Espanol] El Instituto de Investigaciones Electricas (IIE) apoyando a la Comision Nacional para el Ahorro de Energia (CONAE) ha elaborado el anteproyecto de norma de eficiencia energetica en sistemas de bombeo, especificamente para el sector agricola. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma, y esta proximo a publicarse como norma oficial mexicana de eficiencia energetica. En el presente articulo se mencionan los resultados del analisis de los sistemas de bombeo en operacion, los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicandose ademas el impacto ambiental que tendra la implantacion de la misma.

  16. Normalization of the energy efficiency in pumping systems; Normalizacion de eficiencia energetica en sistemas de bombeo

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, R A; Buendia Dominguez, E H [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    The Instituto de Investigaciones Electricas (IIE), supporting the Comision Nacional para el Ahorro de Energia (CONAE) has prepared the preliminary project of the norm of energetic efficiency for pumping systems, specifically for the agricultural sector. This document has complied with the necessary formalities for the issue of a norm and is about to be published as a Mexican Official Norm of energetic efficiency. In this paper mention is made of the results in the analysis of the pumping systems in operation, the energy saving, as well as the economic evaluation that sustain the norm project, indicating besides the environmental impact that its implantation will have. [Espanol] El Instituto de Investigaciones Electricas (IIE) apoyando a la Comision Nacional para el Ahorro de Energia (CONAE) ha elaborado el anteproyecto de norma de eficiencia energetica en sistemas de bombeo, especificamente para el sector agricola. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma, y esta proximo a publicarse como norma oficial mexicana de eficiencia energetica. En el presente articulo se mencionan los resultados del analisis de los sistemas de bombeo en operacion, los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicandose ademas el impacto ambiental que tendra la implantacion de la misma.

  17. Energy efficiency indicators. Case study, Liguria; Indicatori di efficienza energetica. Il caso Liguria

    Energy Technology Data Exchange (ETDEWEB)

    Ciarallo, M A [ENEA, Divisione Promozione degli Usi Efficienti e Diversificazione dell' Energia, Centro Ricerche Casaccia, S. Maria Galeria, RM (Italy)

    2001-07-01

    The report examines the trend in the Liguria Region's energy requirements over the period 1988-1996. The trend was analysed using the regional energy balances and energy efficiency indicators, both in aggregate form and on a single sector basis. The residential sector, in particular, was singled out for an in-depth analysis using publishing and processed data. [Italian] Il presente rapporto esamina l'evoluzione delle caratteristiche energetiche della Regione Liguria attraverso l'analisi degli indicatori di efficienza energetica. Tale analisi e' stata svolta sia a livello aggregato che con riferimento ai singoli settori di attivita'. Particolare attenzione e' stata dedicata al settore residenziale, per il quale e' stato svolto un esame piu' approfondito attraverso un lavoro di raccolta e di elaborazione dati. Il periodo di riferimento va dal 1988 al 1966 dal momento che questo e' l'ultimo anno per il quale sono disponibili i dati economici Istat utilizzati per il calcolo degli indicatori.

  18. The energy situation in the Western region; Situacion energetica en el hemisferio occidental

    Energy Technology Data Exchange (ETDEWEB)

    Weintraub, Sidney [Center for Strategic and International Studies (CSIS) (United States)

    2007-07-15

    The Inter-American affairs have never been simple, in fact, they become even more complicated when the energy is the topic. Due to political and economic reasons as well as those provoked by the resources availability, the western countries seem to have the same differences among them. On the other hand, by means of an analysis of 11 nations, there can be found the challenges that American continent confronts with regard to the energy issue. [Spanish] Las relaciones interamericanas nunca han sido faciles. Menos aun cuando se trata de energia. Debido a razones tanto politicas y economicas como a las ocasionadas por la disponibilidad de recursos, los paises del hemisferio occidental parecen no poder reconciliar sus diferencias. Mediante el analisis de 11 naciones se aprecian los desafios que encara el continente americano en materia energetica.

  19. Evaluation of the energetic equivalence of goat manure biogas; Avaliacao da equivalencia energetica do biogas de esterco de caprinos

    Energy Technology Data Exchange (ETDEWEB)

    Canafistula, Francisco Jose Firmino; Carvalho, Paulo Cesar Marques de [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil). Dept. de Engenharia Eletrica], e-mails: firmino@ufc.br, carvalho@dee.ufc.br

    2008-07-01

    The present paper shows the results of a research about a new production system model based on goats; part of the animals manure is used for biogas production. The biogas is used as fuel for water pumping for the irrigation of the animals pasture. For the viability of the project, a photovoltaic powered electrified fence was used. Additional to the positive results of sustainability, innovative solutions were developed for sizing, optimization and costs reduction by the use of digesters in small rural communities of the semi-arid of the Brazilian Northeast Region. (author)

  20. Energetic evaluation of a mechanical dryer (flex) to familiar agriculture; Avaliacao energetica de um secador mecanico (FLEX) para cafeicultura familiar

    Energy Technology Data Exchange (ETDEWEB)

    Donzeles, Sergio M.L. [Empresa de Pesquisa Agropecuaria de Minas Gerais (CTZM/EPAMIG), Vicosa, MG (Brazil). Centro Tecnologico da Zona da Mata], E-mail: slopes@ufv.br; Silva, Juarez S.; Martin, Samuel; Nogueira, R.M.; Silva, Jadir N.; Zanata, Fabio L. [Universidade Federal de Vicosa (DEA/UFV), MG (Brazil). Dept. de Engenharia Agricola], Emails: juarez@ufv.br, jadir@ufv.br, samuel.martin@ufv.br

    2009-07-01

    Actually, the coffee is one of the most important exportation crops of the country. The utilization of obsolete or unsuitable processes, specifically related to the coffee drying, it can to damage the final quality of the product, besides to result in a low profitability of the coffee growing. In this work a mechanical drier (flex) was built, for the familiar coffee growing, being subsequently evaluated, to the drying of peeled cherry coffee, by the realization of two tests: one with heating of the air using vegetable coal and other combining the use of solar heater with vegetable coal. Basing on the results, it was possible to conclude that the drying of coffee in the mechanical drier Flex can be carried out using vegetable coal as fuel as well as associating the use of the vegetable coal with the solar collector, to save energy. (author)

  1. IPEN (Instituto de Pesquisas Energeticas e Nucleares) - annual report - 1997

    International Nuclear Information System (INIS)

    1998-01-01

    The annual activities report of 1997 of IPEN (Instituto de Pesquisas Energeticas e Nucleares) - Brazilian organization - introduces the next main topics: mission; permanent goals; year main achievements - health and bioengineering, industry and materials and environmental aspects, nuclear reactor technology and fuel cycle, radiation protection and nuclear assurance, human resources formation, infrastructure and support, administration innovation; more important projects summary developed in 1997; budgetary data summary; products and services commercialization; year evaluation of 1997; perspectives for 1998; projects and researches financed for resources captivated in fomentation agencies; and clients

  2. Assuring the energy security; Para garantizar la seguridad energetica

    Energy Technology Data Exchange (ETDEWEB)

    Yergin, Daniel [Cambridge Energy Research Associates (CERA) (United States)

    2006-04-15

    Both the institutions and the policies adopted after the 1973 Arab oil embargo aren't able to satisfy both the energy consumers' and producers' necessities. It is necessary to extend the definition of energy security in order to stand up to the challenges of a globalized world. [Spanish] Las instituciones y politicas adoptadas despues del embargo petrolero arabe de 1973 ya no pueden satisfacer las necesidades de los consumidores y productores de energia. Se requiere expandir la definicion de seguridad energetica para hacer frente a los desafios de un mundo globalizado.

  3. Energetic analysis versus exergetic analysis of charcoal blast furnace of V and M do Brazil; Analise energetica versus analise exergetica do alto forno a carvao vegetal da V and M do Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Soares, Lis Nunes; Silva, Ricardo Junqueira [V e M do BRASIL S.A., Belo Horizonte, MG (Brazil); Franca, Geraldo Augusto Campolina; Lemos, Ricardo Jose Fernandes [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil)

    2011-12-21

    The energetic analysis is the traditional method of quantification of the energy used in an operation involving physical and chemical processes and transference and/or conversion of energy. Generally used through energetic balance that is based on the first law of thermodynamics to evaluate the energetic efficiency. This balance is used to determine and reduce the loss of energy. Although an energy balance does not provide information about the energy degradation or resources during a process and do not quantify the potential or quality of the energy fluxes and material that flow in a system and come out as products and losses. The exergetic analysis goes beyond the limitations of the first law of thermodynamics. The concept of exergy is based in the second law of thermodynamics. The objective of this paper is to compare the more suitable analysis method aiming the identification of the energy economy potentials and consequently the reduction in the emissions of the greenhouse gases, through the balance of mass, energy and exergy of the blast furnace 1 of V and M do Brazil. (author)

  4. Evaluation of the strengthening of the conditions of voltage security using sensitivity analysis; Avaliacao do reforco das condicoes da seguranca de tensao utilizando a analise de sensibilidade

    Energy Technology Data Exchange (ETDEWEB)

    Rosa, A.L.S.; Costa, V.M. da; Peres, W. [Universidade Federal de Juiz de Fora (UFJF), MG (Brazil). Faculdade de Engenharia], Emails: arleilucas@gmail.com, vander@lacee.ufjf.br, wesley.peres@yahoo.com.br; Prada, R.B. [Pontificia Universidade Catolica (PUC-Rio), Rio de Janeiro, RJ (Brazil). Dept. de Engenharia Eletrica], Email: prada@ele.puc-rio.br

    2009-07-01

    Voltage stability or voltage security analysis has motivated an expressive attention of power systems researchers. In this work, a simple and fast method evaluates voltage security and proposes conditions to improve the loading margin. System analysis is carried out in terms of active power transmission path. Sensitivity analysis provides the most adequate buses to active and reactive power redispatch. A sequential iterative methodology to reinforce system conditions is presented. (author)

  5. Rational analysis and index of plasticity of clays for extrusion evaluation; Analise racional e indices de plasticidade para avaliacao de extrusao

    Energy Technology Data Exchange (ETDEWEB)

    Silva, A.R.; Guimaraes Filho, M.A.S.; Santos, C.V.P.; Fagury Neto, E.; Rabelo, A.A., E-mail: adilton25rs@hotmail.com [Universidade Federal do Para (FEMAT/UFPA), Maraba, PA (Brazil). Laboratorio de Materiais Ceramicos

    2011-07-01

    In the microregion Maraba, in the southeast paraense, there's a important industrial park in the area of red ceramic due to the quality of the extracted clays in the proximities of their rivers. With the intention of collaborating for the production of tiles and structural blocks of quality, in this work the rational analysis of clays was accomplished, through the relationship of the qualitative X-ray diffraction and X-ray fluorescence results. Was possible to quantify the present phases in the collected clays and these results were correlated to the Atterberg's limits - plasticity and liquidity limitsand the respective plasticity indexes - making possible to classify the clays in areas of great and acceptable extrusion. The results of the rational analysis demonstrated that the analyzed clays are plastic kaolinites and don't present quantitative differences very accentuated among the present phases detected besides they possess an area of acceptable extrusion naturally. (author)

  6. Appreciation of environmental risks analysis methodologies in the offshore well drilling activities; Analise de metodologias na avaliacao de riscos ambientais relacionados as atividades de perfuracao de pocos maritimos

    Energy Technology Data Exchange (ETDEWEB)

    Zampolli, Daniella M. [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil); Morooka, Celso K. [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Faculdade de Engenharia Mecanica. Dept. de Engenharia de Petroleo

    2004-07-01

    Nowadays, the projects of products and processes are supposed to integrate environmental risks criteria, in addition to their inherent operation impacts. Industrial activities, in general, generate risks to the environment, and, in case of incidents occurrence, many of the possible consequences can be translated into serious impacts. The Risk Analysis is destined to act as a decision tool in the environmental area, and therefore, the use of one of these during the project phase of an enterprise becomes important, aiming the guarantee of the system reliability. The present article has the purpose of analyzing methodologies that are being employed for the environmental risk analysis, as well as usual procedures applied in the oil industry, specially for the offshore wells drilling, evaluating and discussing their peculiarities and possible improvement. It was intended to obtain a general overview of risk analysis methodologies, with the objective of verifying the existence of some characteristics that would positively contribute for the knowledge of the inherent risks in the activities of petroleum installations, where this kind of learning is something extremely technically necessary and legally mandatory. (author)

  7. Energy efficiency indicators. Case study, Liguria; Indicatori di efficienza energetica. Il caso Liguria

    Energy Technology Data Exchange (ETDEWEB)

    Ciarallo, M.A. [ENEA, Divisione Promozione degli Usi Efficienti e Diversificazione dell' Energia, Centro Ricerche Casaccia, S. Maria Galeria, RM (Italy)

    2001-07-01

    The report examines the trend in the Liguria Region's energy requirements over the period 1988-1996. The trend was analysed using the regional energy balances and energy efficiency indicators, both in aggregate form and on a single sector basis. The residential sector, in particular, was singled out for an in-depth analysis using publishing and processed data. [Italian] Il presente rapporto esamina l'evoluzione delle caratteristiche energetiche della Regione Liguria attraverso l'analisi degli indicatori di efficienza energetica. Tale analisi e' stata svolta sia a livello aggregato che con riferimento ai singoli settori di attivita'. Particolare attenzione e' stata dedicata al settore residenziale, per il quale e' stato svolto un esame piu' approfondito attraverso un lavoro di raccolta e di elaborazione dati. Il periodo di riferimento va dal 1988 al 1966 dal momento che questo e' l'ultimo anno per il quale sono disponibili i dati economici Istat utilizzati per il calcolo degli indicatori.

  8. Energy optimization in industrial drying systems; Optimizacion energetica en sistemas de secado industrial

    Energy Technology Data Exchange (ETDEWEB)

    Alarcon, Daniel; Ambriz, Juan Jose; Romero Paredes, Hernando [Universidad Autonoma Metropolitana-Iztapalapa, Mexico, D. F. (Mexico)

    1994-12-31

    The drying of products -meaning the extraction of water or excess humidity down to adequate levels for its conservation and final presentation- demands a large amount of energy, mainly from fuels of fossil origin. Nevertheless, from the standpoint of the energy efficiency, the burning of fuels at very high temperature for using them at a very low temperature, represents an astonishing energy waste, which can be clearly established by means of an energy and exergy balance of these drying installations. In this study the methodology for the energy analysis for industrial drying systems is presented and it is applied to different practical cases. The efficiency of the entire system is evaluated and the losses for each concept, in order to obtain the potential energy saving. [Espanol] El secado de productos, entendido como la extraccion de agua o humedad en exceso, hasta niveles adecuados para su conservacion o presentacion final, demanda una gran cantidad de energeticos, principalmente de origen fosil. No obstante, desde el punto de vista de la eficiencia energetica, el quemar combustible a muy alta temperatura para emplearlos a una muy baja, representa un dispendio energetico impresionante, lo cual puede ser claramente establecido mediante el balance energetico y exergetico de dichas instalaciones de secado. En el presente estudio se presenta la metodologia de analisis energetico de sistemas industriales de secado y se aplica a distintos casos practicos. Se evalua la eficiencia total del sistema y las perdidas por cada concepto con la finalidad de obtener los potenciales de ahorro de energia.

  9. Regulation on power efficiency in the automobile; Regulacion sobre eficiencia energetica en el automovil

    Energy Technology Data Exchange (ETDEWEB)

    Maldonado Susano, Armando; Romero de Vivar Uvaldo, Pascual [Comision Nacional para el Ahorro de Energia, Mexico, D.F. (Mexico)

    2001-07-01

    In this article it is presented a brief analysis of one of the regulations on the yield of fuel consumption of the light vehicles that promoted substantial changes in the Mexican automotive industry, the decree denominated PREMCE (Average of minimum fuel yield by company), as well as some international experiences relative to the subject. It is also indicated the evolution, in the last years, of the average yields of fuel consumption (Km/L) in Mexico in the new automobiles and the more important technological factors that affect their energy efficiency. [Spanish] En este articulo se presenta un breve analisis de una de las regulaciones sobre el rendimiento de consumo de combustible de los vehiculos ligeros que promovio cambios sustanciales en la industria automotriz mexicana, el decreto denominado Premce (Promedio de rendimiento minimo de combustible por empresa), asi como algunas experiencias internacionales relativas al tema. Se senala tambien la evolucion, en los ultimos anos, de los rendimientos promedio de consumo de combustible (Km/L) en Mexico en los automoviles nuevos y los factores tecnologicos mas importantes que influyen en su eficiencia energetica.

  10. Submersible pumps: Energetic efficiency norm; Bombas sumergibles: norma de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, R. A.; Buendia Dominguez, E. H. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    The Instituto de Investigaciones Electricas (IIE), supporting the Comision Nacional para el Ahorro de Energia (CONAE), has prepared a preliminary project of the norm of energy efficiency for submersible pumps. This document has complied with the necessary formalities for the emission of the norm. This paper presents the results of the analysis of the submersible pumps, the energy savings, as well as the economic evaluation that sustains the norm project, additionally pointing out the environmental impact that will bring along the implantation of the same. [Espanol] El Instituto de Investigaciones Electricas (IIE), apoyando a la Comision Nacional para el Ahorro de Energia (CONAE), ha elaborado el anteproyecto de norma de eficiencia energetica para bombas sumergibles. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma. En el presente articulo se mencionan los resultados del analisis de las bombas sumergibles, los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicandose ademas el impacto ambiental que tendra la implantacion de la misma.

  11. Submersible pumps: Energetic efficiency norm; Bombas sumergibles: norma de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, R A; Buendia Dominguez, E H [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1998-12-31

    The Instituto de Investigaciones Electricas (IIE), supporting the Comision Nacional para el Ahorro de Energia (CONAE), has prepared a preliminary project of the norm of energy efficiency for submersible pumps. This document has complied with the necessary formalities for the emission of the norm. This paper presents the results of the analysis of the submersible pumps, the energy savings, as well as the economic evaluation that sustains the norm project, additionally pointing out the environmental impact that will bring along the implantation of the same. [Espanol] El Instituto de Investigaciones Electricas (IIE), apoyando a la Comision Nacional para el Ahorro de Energia (CONAE), ha elaborado el anteproyecto de norma de eficiencia energetica para bombas sumergibles. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma. En el presente articulo se mencionan los resultados del analisis de las bombas sumergibles, los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicandose ademas el impacto ambiental que tendra la implantacion de la misma.

  12. Structural characterization of advanced ceramics using the neutron diffractometer developed by Instituto de Pesquisas Energeticas e Nucleares (IPEN)

    International Nuclear Information System (INIS)

    Parente, C.B.R.; Mazzocchi, V.L.

    1999-01-01

    Application of neutron diffractometer at the Instituto de Pesquisas Energeticas Nucleares, Sao Paulo, Brazil, in the structural investigations of advanced ceramics was presented. Methodology of the analysis of neutron diffraction patterns was tested with BaLiF 3 single crystals and also doped with Ni 2+ or Pb 2+ ions. The same methodology was used to investigate the HTSC phases in the system Bi-Sr-Ca-Cu-O. The system Bi 1.7 Pb 0.3 Sr 2 Ca 2.2 Cu 3.5 O 10.6 was also investigated. Addition of Pb 2+ ions increased the fraction of high-T c phase 2223. Symmetry in neutron multiple diffraction patterns, obtained for aluminium single crystal, was elaborated. Crystal lattice parameter for aluminium single crystal was determined at different temperatures using neutron multiple diffraction. (author)

  13. Thermal analysis of Brazilian standards proposals for social residential buildings; Avaliacao termica das propostas de normas brasileiras para edificacoes de interesse social

    Energy Technology Data Exchange (ETDEWEB)

    Dilkin, Pedro [Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Ijui, RSA (Brazil). Dept. de Fisica, Estatistica e Matematica]. E-mail: dilkin@main.unijui.tche.br; Schneider, Paulo Smith [Rio Grande do Sul Univ., Porto Alegre, RS (Brazil). Dept. de Engenharia Mecanica]. E-mail: pss@mecanica.ufrgs.br

    2000-07-01

    This work presents a critical analysis of national proposals of standards for the thermal performance of simple residential buildings. A review of some international standards is performed together with the description of the national proposals of standards, and a prototype of a house is assembled, following each one of the texts. Results are displayed and the prototypes are simulated using the TRNSYS environment, concerning winter and summer periods of Porto Alegre. Finally, the national proposal that achieved the best performance is improved by means new simulations. (author)

  14. Analysis of an in-line diesel production system through event driven simulation; Avaliacao do esquema de producao em linha de diesel atraves da simulacao por eventos discretos

    Energy Technology Data Exchange (ETDEWEB)

    Monteiro, Gilsa P.; Naegeli, Guilherme S.T. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES); Santos, Nilza M.Q. [PETROBRAS S.A., Mataripe, Salvador, BA (Brazil). Refinaria Landulfo Alves (RLAM); Netto, Joaquim D.A. [DNV Energy Solutions, Porto Alegre, RS (Brazil)

    2008-07-01

    The interactions between refining processes (such as distillation, hydrotreatment, etc.) and typical transfer and storage operations (mixtures, decantation, storage, etc.) provide a high complexity to the refineries production systems of petroleum derivatives. These production systems are characterized by many aspects, such as: blending rules, feed composition, petroleum campaigns, storage tanks limitations, continuous and batch processes interactions, etc. Besides these operational aspects, the equipment and systems' reliability has strong influence on the level of production goals achievement and petroleum derivatives quality specification. Looking for a higher economic efficiency and in order to provide refineries with orientation about resources optimization for their petroleum derivatives' production systems, the development of a methodology capable of being applied since the design phase to identify systems limitations and improvement opportunities, considering all the raised aspects, is a very important task. With this objective, this article presents the main points of an evaluation that was conducted during the conceptual design for a diesel in-line blending production system proposed by a Brazilian refinery, detailing the main steps of the methodology that was developed through this analysis, based on discrete event simulation. (author)

  15. Activities report of Instituto de Pesquisas Energeticas e Nucleares -IPEN - 1993; Relatorio anual de atividades 1993

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-08-01

    This is an activity report of 1993 year from Instituto de Pesquisas Energeticas Nucleares - IPEN, one brazilian organization that form personnel actuate in radioprotection at the man and environment. Their works in social and environmental applications of nuclear energy, developing of reactors, alternative technologies to energy generation, advanced technologies and infra-structure activities are presented. (C.M.).

  16. Activities report of Instituto de Pesquisas Energeticas e Nucleares -IPEN - 1993

    International Nuclear Information System (INIS)

    1994-08-01

    This is an activity report of 1993 year from Instituto de Pesquisas Energeticas Nucleares - IPEN, one brazilian organization that form personnel actuate in radioprotection at the man and environment. Their works in social and environmental applications of nuclear energy, developing of reactors, alternative technologies to energy generation, advanced technologies and infra-structure activities are presented. (C.M.)

  17. General presentation of the instrumentation area of IPEN (Instituto de Pesquisas Energeticas e Nucleares)

    International Nuclear Information System (INIS)

    Anon.

    The area of electronic instrumentation of IPEN (Instituto de Pesquisas Energeticas e Nucleares), is presented. The activities of AIE (Electronic Instrumentation Area) is constituted basically in a technical attendance to the IPEN research centers and sometimes to industry that needs maintenance in nuclear equipments. (E.G.) [pt

  18. Study on the relationship between water exergy and enthalpy applicable to the energetic analysis of steam thermodynamic cycles; Estudo da relacao entre exergia e entalpia da agua, aplicavel a analise energetica e exergetica de ciclos termodinamicos a vapor

    Energy Technology Data Exchange (ETDEWEB)

    Llagostera, Jorge [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Mecanica. Dept. de Energia]. E-mail: llagost@fem.unicamp.br

    1995-07-01

    This paper presents a thermodynamic relation, defined to improve methodologies in Second Law Analysis of thermal systems. This relation is defined dividing the specific thermomechanical exergy by the specific enthalpy of a substance, adopting as reference a selected thermodynamic state. This relation is determined and analyzed for liquid water and steam in a range of temperatures (30 deg C - 700 deg C) and pressures (0.101325 MPa - 18.1 Mpa). The behavior of the proposed relation is compared against the exergy behavior as function of temperature and pressure. The proposed relation can be used to compare and evaluate thermodynamic states that have similar exergy content. It makes possible to identify the states presenting higher exergetic level per enthalpy unit. This concept can be useful in thermodynamic analysis and optimization of steam cycles and thermal processes. (author)

  19. Experimental energetic analysis of gas natural-powered fuel cell cogeneration plant; Analise energetica experimental de uma planta de co-geracao com celulas a combustivel e gas natural

    Energy Technology Data Exchange (ETDEWEB)

    Furtado, Jose G.M.; Lopes, Francisco C.; Silva Junior, Fernando R.; Soares, Guilherme F.W.; Serra, Eduardo T. [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Power systems based on fuel cells have been considered for residential and commercial applications in energy Distributed Generation (DG) market as these systems can minimize their acquisition, installation and operation high costs. In this work we present an experimental analysis of a power generation system formed by a 5 kW proton exchange membrane fuel cell unit and a natural gas reformer (fuel processor) for hydrogen production, of the CEPEL's Fuel Cell Laboratory. It was determined the electrical performance of the cogeneration system in function of the design and operational power plant parameters. Additionally, it was verified the influence of the activation conditions of the fuel cell electrocatalytic system on the system performance. It also appeared that the use of hydrogen produced from the natural gas catalytic reforming provided the system operation in excellent electrothermal stability conditions resulting in increase of the energy conversion efficiency and of the economy of the cogeneration power plant. The maximum electrical efficiency achieved was around 38% and in all power range unit operated with average potential per single fuel cell higher than 0.60 V. (author)

  20. Studies for the elaboration of standards of energy efficiency in constructions; Estudios para la elaboracion de normas de eficiencia energetica en edificaciones

    Energy Technology Data Exchange (ETDEWEB)

    Ramos Niembro, Gaudencio; Heard, Christopher [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico); Hernandez Pensado, Fernando [Comision Nacional para el Ahorro de Energia (Mexico)

    1999-07-01

    The obtaining of the first drafts of standard of energy efficiency implicate diverse research work previous to its elaboration, which include the justification and the analysis of the reason of the variables to consider, the corresponding cost-benefit study that gives viability to the standard and a procedure of calculation for its fulfillment. The present paper relates the diverse aspects that were analyzed for the justification, the revision and the obtaining of the first drafts of the first standards of energy efficiency in nonresidential constructions that are hoped to be implemented in Mexico. [Spanish] La obtencion de los anteproyectos de norma de eficiencia energetica implica diversos trabajos de investigacion previos a su elaboracion, los cuales incluyen la justificacion y el analisis del porque de las variables a considerar, el estudio costo- beneficio correspondiente, que da viabilidad a la norma y un procedimiento de calculo para su cumplimiento. El presente trabajo relata los diversos aspectos que se analizaron para la justificacion, la revision y la obtencion de los anteproyectos de las primeras normas de eficiencia energetica en edificaciones no residenciales que se esperan implantar en Mexico.

  1. The future of the energy policy; El futuro de la politica energetica

    Energy Technology Data Exchange (ETDEWEB)

    Wirth, Timothy E [United Nations Foundation (United States); Gray, C. Boyden [Wilmer, Cutler & Pickering (United States); Podesta, John D. [Georgetown University Law Center (United States)

    2003-10-15

    In the United States, the discussion about the energy policy has not achieved to tackle the important issues being at stake. This is the suitable moment for envisaging a new and ambitious approach of the American energy policy, which stands up to the problems of the petroleum dependency, global climate change and lack of access to the developing world. [Spanish] El debate sobre la politica energetica en Estados Unidos no ha logrado abordar los importantes asuntos que estan en juego. Ya es hora de intentar un nuevo y ambicioso planteamiento de la politica energetica estadounidense, que haga frente a los problemas de dependencia petrolera, cambio climatico y falta de acceso a la energia del mundo en desarrollo.

  2. IPEN (Instituto de Pesquisas Energeticas e Nucleares) technical-scientific production - 1995-1996

    International Nuclear Information System (INIS)

    1998-03-01

    The biannual report of 1995-1996 of IPEN (Instituto de Pesquisas Energeticas e Nucleares) - Brazilian organization - presents the technical and scientific production accomplished in the period - 975 woks - and introduces the next main topics: articles of periodicals; scientific events - complete texts; dissertations and thesis; scientific events - complete texts - communications, summaries and panels; IPEN publications; books; authors index; scientific events index; subjects index; and periodicals index

  3. Energy efficiency: a necessity in complex surroundings; Eficiencia energetica: una necesidad en un entorno complejo

    Energy Technology Data Exchange (ETDEWEB)

    Menendez Perez, E. [Alcion Ingenieria Quimica, S.A. (Spain)

    2005-10-15

    A global analysis of the energy system with reference to the energy case of Spain in comparison to the yield of the European Union is proposed. The analysis discusses the problems originated by the climatic change and exhibits three decisive concepts in energy efficiency (investment, good use and productivity) along with three indicating phenomena of an efficient or incompetent development (mobility, tourism and urbanism). Next, it exemplifies possible evolution criteria of the electrical production systems along with an ideal of evolution in the generation systems simultaneously mentioning measures for the emissions reduction in the industry, particularly in the automotive industry. In addition, it considers the imposition of energy taxes in front of the non fulfillment of the emissions' control as an important restrictive measurement. In between, the solution initiatives that have had a short reach, such as the Kyoto protocol, and categorical conclusions are contemplated: The cleanest energy is the one than is not consumed, not because it is not available but because it is not necessary, therefore it is not demanded. [Spanish] Se propone un analisis global del sistema de energia con referencia al caso energetico de Espana en equiparacion al rendimiento de la Union Europea. El analisis discute las problematicas originadas por el cambio climatico y exhibe tres conceptos decisivos en la eficiencia energetica (inversion, buen uso y productividad) junto con tres fenomenos indicadores de un desarrollo eficiente o incompetente (movilidad, turismo y urbanismo). Enseguida ejemplifica posibles criterios de evolucion de los sistemas de produccion electrica junto con un ideal de evolucion en los sistemas de generacion, a la vez que cita medidas para la reduccion de emisiones en la industria, particularmente en la industria automotriz. Se considera la imposicion de impuestos energeticos frente al incumplimiento en el control de emisiones como una importante medida

  4. Energy evaluation process of electric domestic refrigerators; Proceso de evaluacion energetica de refrigeradores electrodomesticos

    Energy Technology Data Exchange (ETDEWEB)

    Malacara Toral, Manuel; Ruiz Neblina, Joaquin [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1993-12-31

    A description is made of an energy evaluation study on electric domestic refrigerators carried out by the Instituto de Investigaciones Electricas (IIE), in its strategy for diminishing the energy consumption through the design enhancement, the manufacture, the operation and the standardization of the electric appliances. In order to initiate the evaluation-standardization process, the Mexican (NOM), the American (ANSI/AHAM) and the Canadian (CAN/CSA) standards were taken as a base to harmonize the procedures and the parameters of the tests. The energy assessment demonstrated that there are significant differences among the standards encompassed by the study, therefore, recommendations were made for the harmonization of the standards. [Espanol] Se describe un estudio de evaluacion energetica sobre refrigeradores electrodomesticos realizado en el Instituto de Investigaciones Electricas (IIE) dentro de la estrategia para disminuir los consumos de energia a traves de mejoras en el diseno, la manufactura, la operacion y la normalizacion de equipos electricos. Se tomo como base las normas mexicanas (NOM), americana (ANSI/AHAM) y canadiense (CAN/CSA) para iniciar el proceso de evaluacion-normalizacion a fin de armonizar los procedimientos y parametros de las pruebas. La evaluacion energetica demostro que existen diferencias significativas entre las normas que abarco el estudio por lo que se presentan recomendaciones para la armonizacion de las normas.

  5. Integral power evaluation in fossil fuel power plants; Evaluacion energetica integral en unidades de centrales termoelectricas

    Energy Technology Data Exchange (ETDEWEB)

    Figueroa I, Luis R; Sanchez H, Laura E; Rodriguez M, Jose H [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Nebradt G, Jesus [Unidad de Investigacion y Desarrollo de la Subdireccion de Generacion de la Comision Federal de Electricidad, (Mexico)

    2006-07-01

    In this occasion, a methodology is presented that carries out an integral energy evaluation of fossil fuel power plants units (FFPPU) with the purpose of determining the root of the significant decrements of power produced soon after the annual maintenance service. This proposal, besides identifying the origin of the energy efficiency problems, offers information about the contributions of each one of the involved equipment in the total decrement of the unit. With this methodology, the maintenance focuses in the equipment that contributes to the greater energy loss. This document presents such methodology along with its application in a real case, results and necessary remedial actions, demonstrating that its application offers bases for the investment in corrective measures. [Spanish] En esta ocasion se presenta una metodologia que efectua una evaluacion energetica integral de las unidades de centrales termoelectricas (UCT) con el fin de determinar la raiz de los decrementos de potencia significativos producidos luego del servicio anual de mantenimiento. Dicha propuesta, ademas de identificar el origen de los problemas de eficiencia energetica, brinda informacion acerca de las aportaciones de cada uno de los equipos involucrados al decremento total de la unidad. Con esta metodologia, el mantenimiento se enfoca a los equipos que contribuyen a la mayor perdida de potencia. Este documento exhibe tal metodologia junto con su aplicacion en un caso real, resultados y las acciones correctivas necesarias, demostrando que su aplicacion ofrece bases para una inversion futura en medidas correctivas.

  6. Energy evaluation process of electric domestic refrigerators; Proceso de evaluacion energetica de refrigeradores electrodomesticos

    Energy Technology Data Exchange (ETDEWEB)

    Malacara Toral, Manuel; Ruiz Neblina, Joaquin [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1992-12-31

    A description is made of an energy evaluation study on electric domestic refrigerators carried out by the Instituto de Investigaciones Electricas (IIE), in its strategy for diminishing the energy consumption through the design enhancement, the manufacture, the operation and the standardization of the electric appliances. In order to initiate the evaluation-standardization process, the Mexican (NOM), the American (ANSI/AHAM) and the Canadian (CAN/CSA) standards were taken as a base to harmonize the procedures and the parameters of the tests. The energy assessment demonstrated that there are significant differences among the standards encompassed by the study, therefore, recommendations were made for the harmonization of the standards. [Espanol] Se describe un estudio de evaluacion energetica sobre refrigeradores electrodomesticos realizado en el Instituto de Investigaciones Electricas (IIE) dentro de la estrategia para disminuir los consumos de energia a traves de mejoras en el diseno, la manufactura, la operacion y la normalizacion de equipos electricos. Se tomo como base las normas mexicanas (NOM), americana (ANSI/AHAM) y canadiense (CAN/CSA) para iniciar el proceso de evaluacion-normalizacion a fin de armonizar los procedimientos y parametros de las pruebas. La evaluacion energetica demostro que existen diferencias significativas entre las normas que abarco el estudio por lo que se presentan recomendaciones para la armonizacion de las normas.

  7. Energy policy and foreign policy in Italy; Politica energetica e politica estera in Italia

    Energy Technology Data Exchange (ETDEWEB)

    Venanzi, F. (comp.)

    2001-06-01

    Energy policy in Italy is principally a matter of foreign policy. As a result, extensive programmes for the exploration, development, transport and marketing of oil and natural gas have to be planned and carried out together with the producing countries. In this effort, the country shall need the support of its national energy companies. That is why ENI's controlling interest as well as its mission had better be on Italian hands. [Italian] Per l'Italia la politica energetica deve essere principalmente politica estera. Occorre pertanto realizzare vasti programmi di esplorazione mineraria, coltivazione, trasporto e commercializzazione di petrolio e gas naturale con i Paesi produttori. Ci sara' quindi bisogno di contare sulle imprese energetiche nazionali: per questa ragione, si auspica che il controllo e la missione dell'ENI restino italiani.

  8. Dalla riqualificazione energetica alla riqualificazione della città: strumenti per finanziare la qualità urbana

    Directory of Open Access Journals (Sweden)

    Luca Caneparo

    2017-06-01

    Full Text Available Il paper si focalizza sullo studio delle possibilità di intervento sugli spazi pubblici e privati all’interno del tessuto urbano, considerati come un tutt’uno interconnesso, impiegando la leva di finanziamenti volti all’efficientamento energetico. A oggi, la maggior parte del tessuto costruito in Europa e negli USA non è mai stato soggetto di processi di riqualificazione energetica, presentando quindi caratteristiche inadeguate. Per affrontare questo tema attraverso la riqualificazione energetica sono stati sviluppati diversi strumenti finanziari basati sul principio di recuperare il capitale investito tramite i risparmi sulle bollette dell’energia; il paper analizzerà alcuni di questi strumenti considerati emergenti nell’attuale contesto. Verranno inoltre considerate le ricedute che l’insieme di questi interventi può generare nel tessuto della città nel suo insieme alimentando lo sviluppo urbano, valorizzando specifiche culture delle comunità e dei luoghi, intrecciando e ibridando urbanità e aspetti naturali.

  9. Energetic characterization of Amazonian biomass; Caracterizacao energetica de biomassas amazonicas

    Energy Technology Data Exchange (ETDEWEB)

    Feitosa Netto, Genesio Batista; Oliveira, Antonio Geraldo de Paula; Coutinho, Hebert Willian Martins; Nogueira, Manoel Fernandes Martins; Rendeiro, Goncalo [Universidade Federal do Para (UFPA), Belem, PA (Brazil). Dept. de Engenharia Mecanica

    2006-07-01

    In order to asses the potentiality of Amazon biomasses to generate power, either to supply electric energy to the grid or as fuel to plants supplying power for off-grid location, data for their proximate analysis must be available. A literature review on the subject indicated a lack of information and data concerning typical Amazon rain forest species. This work aimed to characterize (proximate analysis) 43 Amazon species in order to evaluate the energy resource from woody biomass wastes in Amazon region. Higher heating value, carbon, volatile and ash contents were measured in a dry basis. The measurements were performed obeying the following Brazilian standards, NBR 6923, NBR 8112, NBR 8633, NBR 6922. (author)

  10. La Comunità Energetica del Sud Est Europa quale fattore di stabilità nell’area Balcanica

    OpenAIRE

    Massari, Saverio Francesco

    2012-01-01

    Il lavoro cerca di valutare il possibile ruolo della Comunità Energetica del Sud Est Europa quale fattore di stabilita’ nell’area Balcanica. Il Trattato fondativo della Comunita’ assegna a questa l’obiettivo di condurre una cooperazione in campo energetico al fine diffondere istituzioni e normative condivise, quali elementi di superamento del conflitto: tuttavia, sono molti gli ostacoli posti su questo cammino sia di natura interna alla regione che esterna, per l’influenza di fattori e poter...

  11. Energy efficiency study of the domestic refrigerators inside of a controlled environment laboratory; Estudio de la eficiencia energetica de refrigeradores domesticos dentro de un laboratorio de ambiente controlado

    Energy Technology Data Exchange (ETDEWEB)

    Arroyo Cabanas, Fernando Gabriel

    2004-04-15

    The evaluation of the energy saving potential is looked for that exists in the park of domestic refrigerators of the country when replacing them by refrigerators of higher power efficiency, through a comparative analysis of the results obtained in experimental tests applied to domestic refrigerators, in agreement with Official Norm NOM 015-2002 and with the theoretical values reported by the manufacturers. Initially the park of domestic refrigerators used in Mexico (brand names, efficiency and electrical consumption) was studied with the objective of evaluating the electric energy consumption in the refrigerators at national level. Once with the consumption determined, a governmental program for the accelerated substitution of the park of domestic refrigerators of greater antiquity is proposed, for models of better power efficiency. Next, the characterization of the Laboratorio de Ambiente Controlado is made (preliminary tests of thermal stability and heat losses) to obtain the thermal conditions marked by Norm NOM-015-2002. Also relevant points for the experimental energy analysis are established in domestic refrigerators according to norm NOM-015-2002. Finally, a test protocol for domestic refrigerators applied in the LAC with base in this norm will be proposed and a validation of this by means of the necessary experimental tests and the required calculations will be carried out. Finally the obtained results of the tests of power efficiency applied to different models from domestic refrigerators, as well as conclusions are presented. [Spanish] Se busca evaluar el potencial de ahorro de energia que existe en el parque de refrigeradores domesticos del pais al sustituirlos por refrigeradores de mayor eficiencia energetica, a traves de un analisis comparativo de los resultados obtenidos de pruebas experimentales aplicadas a refrigeradores domesticos, de acuerdo con la Norma Oficial NOM.015-2002 y con los valores teoricos reportados por los fabricantes. Primeramente

  12. Energetic technologies and environmental impact; Tecnologias Energeticas e Impacto Ambiental

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This monograph is a collective work by scientist from CIEMAT (Spanish centre for research on energy, environment and technology). By reviewing the central topics of their own work, the authors present a world-wide update of the state of the arts of the different technologies involved in energy production. The chapters fo through the more promising technologies related to the diverse energy sources, from the nuclear to the renewable and chemical a large gamut of energy supply ways is revised. The analysis of the production technologies is axxompanied by considerations of the environemental implications, an aspect to wich a whole part of the volume is devoted. The book begins with a foreword by Dr. Felix Yndurain, former General Director of CIEMAT and follows with a general introduction to the main topics, that are presented in three parts, with specific introductions. There is also a closing fourth part that includes some additional activities where more basic and technical developments are included. The first part is devoted to energy os nuclear origin. In two separate sections, fission and fusion technologies are covered. The fission section points towards the present day problems of nuclear plants (ageing, accidents, risk analysis, etc.), reprocessing of the nuclear fuel, raioactive wates and environmental radioactivity. The fusion section contains a critical account of the present and expected developments of the fusion reactors together with an exposition of the related plasma physics problems. The second part comprises two sections devoted to energy generation of renewable and chemical origin, respectively. Tehcnologies for solar, wind and biomass energies are thoroughly exposed along the renewable energy section whereas the chemical energy section is devoted to the modern technologies of clean fossil fuel combustion and gasification, as well as to the new appealing subject of direct electric generation with fuel cells. The main environmental ans social issues

  13. NEPHRUS: model of intelligent multilayers expert system for evaluation of the renal system based on scintigraphic images analysis; NEPRUS: modelo de sistema especialista em multicamadas inteligentes para avaliacao do sistema urinario baseado na analise de imagens cintilograficas

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Jose W.E. da; Schirru, Roberto [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia; Boasquevisque, Edson M. [Universidade do Estado, Rio de Janeiro, RJ (Brazil). Servico de Medicina Nuclear

    1997-10-01

    This work develops a prototype for the system model based on Artificial Intelligence devices able to perform functions related to scintigraphic image analysis of the urinary system. Criteria used by medical experts for analysis images obtained with {sup 99m} Tc+DTPA and/or {sup 99m} Tc+DMSA were modeled and a multi resolution diagnosis technique was implemented. Special attention was given to the programs user interface design. Human Factor Engineering techniques were considered so as to ally friendliness and robustness. Results obtained using Artificial Neural Networks for the qualitative image analysis and the knowledge model constructed shows the feasibility of Artificial Intelligence implementation that use `inherent` abilities of each technique in the resolution of diagnosis image analysis problems. (author). 12 refs., 2 figs., 2 tabs.

  14. Nephrus: expert system model in intelligent multilayers for evaluation of urinary system based on scintigraphic image analysis; Nephrus: modelo de sistema especialista em multicamadas inteligentes para avaliacao do sistema urinario baseado na analise de imagens cintilograficas

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Jorge Wagner Esteves da; Schirru, Roberto [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia. Programa de Engenharia Nuclear; Boasquevisque, Edson Mendes [Hospital dos Servidores do Estado, Rio de Janeiro, RJ (Brazil). Servico de Medicina Nuclear

    1999-11-01

    Renal function can be measured noninvasively with radionuclides in a extremely safe way compared to other diagnosis techniques. Nevertheless, due to the fact that radioactive materials are used in this procedure, it is necessary to maximize its benefits, therefore all efforts are justifiable in the development of data analysis support tools for this diagnosis modality. The objective of this work is to develop a prototype for a system model based on Artificial Intelligence devices able to perform functions related to cintilographic image analysis of the urinary system. Rules used by medical experts in the analysis of images obtained with {sup 99m} Tc+DTPA and /or {sup 99m} Tc+DMSA were modeled and a Neural Network diagnosis technique was implemented. Special attention was given for designing programs user-interface. Human Factor Engineering techniques were taking in account allowing friendliness and robustness. The image segmentation adopts a model based on Ideal ROIs, which represent the normal anatomic concept for urinary system organs. Results obtained using Artificial Neural Networks for qualitative image analysis and knowledge model constructed show the feasibility of Artificial Neural Networks for qualitative image analysis and knowledge model constructed show feasibility of Artificial Intelligence implementation that uses inherent abilities of each technique in the medical diagnosis image analysis. (author) 12 refs., 4 figs., 2 tabs.

  15. Evaluation of Portland cement from X-ray diffraction associated with cluster analysis; Avaliacao de cimento Portland a partir da difracao de raios X associada a analise por agrupamento

    Energy Technology Data Exchange (ETDEWEB)

    Gobbo, Luciano de Andrade, E-mail: luciano.gobbo@panalytical.com [Panalytical Brasil, Sao Paulo, SP (Brazil); Montanheiro, Tarcisio Jose, E-mail: tarcisio.montanheiro@gmail.com [Instituto Geologico, Secretaria de Estado do Meio Ambiente, Sao Paulo, SP (Brazil); Montanheiro, Filipe, E-mail: flpmontanheiro@gmail.com [Universidade Estadual Paulista (LEBAC/UNESP), Rio Claro, SP (Brazil). Departamento de Geologia Aplicada. Lab. de Estudos de Bacias; Sant' Agostino, Lilia Mascarenhas, E-mail: agostino@usp.br [Universidade de Sao Paulo (USP), SP (Brazil). Instituto de Geociencias. Departamento de Geologia Sedimentar e Ambiental

    2013-12-15

    The Brazilian cement industry produced 64 million tons of cement in 2012, with noteworthy contribution of CP-II (slag), CP-III (blast furnace) and CP-IV (pozzolanic) cements. The industrial pole comprises about 80 factories that utilize raw materials of different origins and chemical compositions that require enhanced analytical technologies to optimize production in order to gain space in the growing consumer market in Brazil. This paper assesses the sensitivity of mineralogical analysis by X-ray diffraction associated with cluster analysis to distinguish different kinds of cements with different additions. This technique can be applied, for example, in the prospection of different types of limestone (calcitic, dolomitic and siliceous) as well as in the qualification of different clinkers. The cluster analysis does not require any specific knowledge of the mineralogical composition of the diffractograms to be clustered; rather, it is based on their similarity. The materials tested for addition have different origins: fly ashes from different power stations from South Brazil and slag from different steel plants in the Southeast. Cement with different additions of limestone and white Portland cement were also used. The Rietveld method of qualitative and quantitative analysis was used for measuring the results generated by the cluster analysis technique. (author)

  16. Evaluation of the mineralogical characterization of several smectite clay deposits of the state of Paraiba, Brazil using statistical analysis of variance; Avaliacao da caracterizacao mineralogica de diversos depositos de argilas esmectiticas do estado da Paraiba utilizando analise estatistica de variancia

    Energy Technology Data Exchange (ETDEWEB)

    Gama, A.J.A.; Menezes, R.R.; Neves, G.A.; Brito, A.L.F. de, E-mail: agama@reitoria.ufcg.edu.br [Universidade Federal de Campina Grande (UFCG), PB (Brazil)

    2015-07-01

    Currently over 80% of industrialized bentonite clay produced in Brazil in sodium form for use in various industrial applications come from the deposits in Boa Vista - PB. Recently they were discovered new bentonite deposits situated in the municipalities of Cubati - PB, Drawn Stone - PB, Sossego - PB, and last in olive groves - PB, requiring systematic studies to develop all its industrial potential. Therefore, this study aimed to evaluate chemical characterization several deposits of smectite clays from various regions of the state of Paraíba through the analysis of statistical variance. Chemical analysis form determined by fluorescence x-ray (EDX). Then analyzes were carried out of variance statistics and Tukey test using the statistical soft MINITAB® 17.0. The results showed that the chemical composition of bentonite clay of new deposits showed different amounts of silica, aluminum, magnesium and calcium in relation clays in Boa Vista, and clays imported. (author)

  17. In vitro evaluation of ionizing radiation effects in bone tissue by FTIR spectroscopy and dynamic mechanical analysis; Avaliacao in vitro dos efeitos da radiacao ionizante em tecido osseo bovino por espectroscoia ATR-FTIR e analise dinamica-mecanica

    Energy Technology Data Exchange (ETDEWEB)

    Veloso, Marcelo Noronha

    2013-07-01

    Ionizing radiation from gamma radiation sources or X-ray generators is frequently used in Medical Science, such as radiodiagnostic exams, radiotherapy, and sterilization of haloenxerts. Ionizing radiation is capable of breaking polypeptidic chains and causing the release of free radicals by radiolysis.of water. It interacts also with organic material at the molecular level, and it may change its mechanical properties. In the specific case of bone tissue, studies report that ionizing radiation induces changes in collagen molecules and reduces the density of intermolecular crosslinks. The aim of this study was to verify the changes promoted by different doses of ionizing radiation in bone tissue using Fourier Transform Infrared Spectroscopy (FTIR) and dynamic mechanical analysis (DMA). Samples of bovine bone were irradiated using Cobalt-60 with five different doses: 0.01 kGy, 0.1 kGy, 1 kGy, 15 kGy and 75 kGy. To study the effects of ionizing irradiation on the chemical structure of the bone, the sub-bands of amide I, the crystallinity index and relation of organic and inorganic materials, were studied. The mechanical changes were evaluated using the elastic modulus and the damping value. To verify whether the chemical changes and the mechanical characteristics of the bone were correlated, the relation between the analysis made with spectroscopic data and the mechanical analysis data was studied. It was possible to evaluate the effects of different doses of ionizing radiation in bone tissue. With ATR-FTIR spectroscopy, it was possible to observe changes in the organic components and in the hydroxyapatite crystals organization. Changes were also observed in the elastic modulus and in the damping value. High correlation with statistical significance was observed among (amide III + collagen)/{sub v1,v3}, PO{sub 4}{sup 3-} and the delta tangent, and among 1/FHWM and the elastic modulus. (author)

  18. Contents evaluation of some essential and toxic elements in children and elders diet by neutron activation analysis; Avaliacao do conteudo de alguns elementos essenciais e toxicos em dietas de criancas e idosos pelo metodo de analise por ativacao com neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Maihara, Vera Akiko

    1996-12-31

    Essential and toxic elements in the 19 diet samples from pre-school children and 23 diet samples from elderly people, have been determined by neutron activation analysis. The diet samples were collected by duplicate portion method. A radiochemical separation procedure was developed and applied for determining Cd, Co, Cr, Fe, Mo, Sb, U, Th, W and Zn, based on retention of these elements in a Chelex-100 resin. In the case of As and Se, the procedure was based on retention in inorganic exchanger TDO (tin dioxide). The contents of proteins, lipids and carbohydrates were also analysed. The results have been presented and discussed 135 refs., 29 figs., 36 tabs.

  19. Contents evaluation of some essential and toxic elements in children and elders diet by neutron activation analysis; Avaliacao do conteudo de alguns elementos essenciais e toxicos em dietas de criancas e idosos pelo metodo de analise por ativacao com neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Maihara, Vera Akiko

    1997-12-31

    Essential and toxic elements in the 19 diet samples from pre-school children and 23 diet samples from elderly people, have been determined by neutron activation analysis. The diet samples were collected by duplicate portion method. A radiochemical separation procedure was developed and applied for determining Cd, Co, Cr, Fe, Mo, Sb, U, Th, W and Zn, based on retention of these elements in a Chelex-100 resin. In the case of As and Se, the procedure was based on retention in inorganic exchanger TDO (tin dioxide). The contents of proteins, lipids and carbohydrates were also analysed. The results have been presented and discussed 135 refs., 29 figs., 36 tabs.

  20. Assessment of atmospheric pollution of chemical elements by epiphytic lichen analysis at the Campus of the Sao Paulo University; Avaliacao da poluicao atmosferica de elementos quimicos pela analise de liquen epifitico no Campus da Cidade Universitaria de Sao Paulo

    Energy Technology Data Exchange (ETDEWEB)

    Rocha, Rosiana Rocho

    2015-07-01

    Air pollution has been a frequent topic of research, due to the effects that it can cause on the health of living organisms, environment and climate. In order to identify pollution sources and their effects, biomonitoring has been studied due to its low cost and possibility of sampling in wide geographic areas. In this study for passive biomonitoring of air pollution levels at the Cidade Universitaria Armando Salles de Oliveira (CUASO), University of Sao Paulo campus, epiphytic lichens of Canoparmelia texana species were used. The lichens collected from tree barks at different sampling sites in the CUASO were cleaned, freeze-dried and ground for analyses. Lichen samples were analyzed by X - ray fluorescence spectrometry (XRFS) and neutron activation analysis (NAA). For XRFS, cylindrical pellets of samples were prepared to determine As, Br, Ca, Cl, Cr, Cu, Fe, K, Mn, Rb, S, Sr and Zn. For NAA, lichen sample aliquots along with synthetic elemental standards were irradiated both for short and long periods at the IEA-R1 nuclear research reactor. The induced activities were measured by a gamma ray spectrometer to determine As, Br, Ca Cd, Cl, Co, Cr, Cs, Cu, Fe, K, La, Mg, Mn, Rb, Sb, Sc, Se, U, V and Zn. The precision and accuracy of the results were evaluated by the analysis of certified reference materials (MRCs). Their results of relative errors and standard deviations were below 15% for most of the elements. The standardized difference or En score values were lower than |1| indicating satisfactory results. Replicate analyses of a lichen sample by XRFS and NAA, indicated good homogeneity of the sample for the elements determined. The lichen results showed that the mean concentrations of As, Br, Ca, Cd, Co, Cr, Cs, Rb, Sb, Se and U were higher in samples from CUASO than those from regions considered unpolluted. For Fe, K, La, S, V and Zn, they were of the same order of magnitude. The correlation study between the elements showed high correlation (r > 0.7) for elements

  1. Applications of API RP 1102 in stress analysis of buried pipelines at automated cultivation land; Avaliacao de tensoes em dutos enterrados, em area de cultura mecanizada, a luz da norma API RP 1102

    Energy Technology Data Exchange (ETDEWEB)

    Spagnolo, Rodrigo Alves; Castro, Newton Camelo de [PETROBRAS Transportes S.A. (TRANSPETRO), Rio de Janeiro, RJ (Brazil)

    2005-07-01

    According to the development of the agriculture business in the Midwest of Brazil, it can be noted that the cultivated land has imposed to the right of way pipeline weight and quantity increasing of vehicles moving above TRANSPETRO pipelines. This paper has the objective promoting discussions about this theme, presenting preceding conclusions when analyzing pipeline stresses, when the pipeline equipment are submitted to great loadings of agricultural machines. In order to execute this analysis, analytical formulations were used to compute static and dynamic loadings. These evaluations were referenced from API RP 1102 american norm. Many loading simulations, with different operating and environment configurations to the buried installations, were realized. These data were applied having the purpose of diagnosing typical situations existing in automated cultivated land crossings, related to OSBRA (Oleoduto Sao Paulo - Brasilia) right of way pipeline. (author)

  2. Preliminary analysis of doses to evaluate the image quality in radiographic examinations in veterinary radiology;Analise preliminar das doses para avaliacao da qualidade da imagem em exames radiograficos na radiologia veterinaria

    Energy Technology Data Exchange (ETDEWEB)

    Pinto, Ana Carolina B.C.F.; Dias, Mayara T.P.; Santos, Andrea C. [Universidade de Sao Paulo (USP), SP (Brazil). Faculdade de Medicina Veterinaria e Zootecnia; Melo, Camila S.; Furquim, Tania A.C. [Universidade de Sao Paulo (IEE/USP), SP (Brazil). Inst. de Eletrotecnica e Energia

    2009-07-01

    This work has as objective to promote the analysis of the radiological doses and quality of the image of the technical letter used for the accomplishment of thorax and coxal radiographic examination of animals of canine and feline species. The study was accomplished in the service of Diagnosis for Image in Veterinarian Hospital of Veterinary Medicine and Zootecnia College of University of Sao Paulo, in two conventional equipment. Initially, physical features of the animals and the technique used were collected for each one of the 188 radiographic examinations of thorax and 52 examinations of coxal. The animals were placed in different groups, according to their body weight. For each group, the averages for each feature were calculated: thickness of the radiographed region, tension, electric current, time of exhibition, current product electric-time, size of the used film, presence or absence of bucky and feature of focus (narrow or thick). On the basis of the averages of group M (of lesser weights that 5kg for cats and between 10,1kg and 20kg for dogs), was executed a physical analysis of the current technical letter, using the equipment: ionization chamber (to determinate the value of kerma in air), simulator objects (representative of the thickness of the animal) and three dispositive standards of test that evaluate space resolution, resolution in low contrast and contrast-detail. The obtained images were analyzed and compared for a physicist and a radiologist medical veterinary. The results had shown that the examinations supply dose considered high for techniques used mainly for coxal. The equipment A, although to supply higher doses, presents the better images for the majority of the projections. However, the study indicates that there are not exactly reference levels, but these examinations must pass for improvement of quality of image (author)

  3. Evaluation of the fuel rod integrity in PWR reactors from the spectrometric analysis of the primary coolant; Avaliacao da integridade de varetas combustiveis em reatores PWR a partir da analise espectrometrica da agua do primario

    Energy Technology Data Exchange (ETDEWEB)

    Monteiro, Iara Arraes

    1999-02-15

    The main objective of this thesis is to provide a better comprehension of the phenomena involved in the transport of fission products, from the fuel rod to the coolant of a PWR reactor. To achieve this purpose, several steps were followed. Firstly, it was presented a description of the fuel elements and the main mechanisms of fuel rod failure, indicating the most important nuclides and their transport mechanisms. Secondly, taking both the kinetic and diffusion models for the transport of fission products as a basis, a simple analytical and semi-empirical model was developed. This model was also based on theoretical considerations and measurements of coolant's activity, according to internationally adopted methodologies. Several factors are considered in the modelling procedures: intrinsic factors to the reactor itself, factors which depend on the reactor's operational mode, isotope characteristic factors, and factors which depend on the type of rod failure. The model was applied for different reactor's operational parameters in the presence of failed rods. The main conclusions drawn from the analysis of the model's output are relative to the variation on the coolant's water activity with the fuel burnup, the linear operation power and the primary purification rate and to the different behaviour of iodine and noble gases. The model was saturated from a certain failure size and showed to be unable to distinguish between a single big fail and many small ones. (author)

  4. Qualification and application of nuclear reactor accident analysis code with the capability of internal assessment of uncertainty; Qualificacao e aplicacao de codigo de acidentes de reatores nucleares com capacidade interna de avaliacao de incerteza

    Energy Technology Data Exchange (ETDEWEB)

    Borges, Ronaldo Celem

    2001-10-15

    This thesis presents an independent qualification of the CIAU code ('Code with the capability of - Internal Assessment of Uncertainty') which is part of the internal uncertainty evaluation process with a thermal hydraulic system code on a realistic basis. This is done by combining the uncertainty methodology UMAE ('Uncertainty Methodology based on Accuracy Extrapolation') with the RELAP5/Mod3.2 code. This allows associating uncertainty band estimates with the results obtained by the realistic calculation of the code, meeting licensing requirements of safety analysis. The independent qualification is supported by simulations with RELAP5/Mod3.2 related to accident condition tests of LOBI experimental facility and to an event which has occurred in Angra 1 nuclear power plant, by comparison with measured results and by establishing uncertainty bands on safety parameter calculated time trends. These bands have indeed enveloped the measured trends. Results from this independent qualification of CIAU have allowed to ascertain the adequate application of a systematic realistic code procedure to analyse accidents with uncertainties incorporated in the results, although there is an evident need of extending the uncertainty data base. It has been verified that use of the code with this internal assessment of uncertainty is feasible in the design and license stages of a NPP. (author)

  5. Evaluation of internal occupational exposure of workers from nuclear medicine services by aerosol analysis containing {sup 131}I; Avaliacao da exposicao interna de trabalhadores em servicos de medicina nuclear atraves da analise de aerossois contendo {sup 131}I

    Energy Technology Data Exchange (ETDEWEB)

    Carneiro, Luana Gomes; Sampaio, Camilla da Silva; Dantas, Ana Leticia Almeida; Lucena, Eder Augusto; Santos, Maristela Souza; Dantas, Bernardo Maranhao, E-mail: carneiro@ird.gov.br [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ),Rio de Janeiro, RJ (Brazil); Paula, Gustavo Affonso de [Escola SESC de Ensino Medio, Rio de Janeiro, RJ (Brazil)

    2014-07-01

    This study evaluated the risk of internal occupational exposure associated with the incorporation of {sup 131}I via inhalation, in Nuclear Medicine Services, using aerosol analysis techniques. Occupationally Exposed Individuals (IOE) involved in handling this radionuclide are subject to chronic exposure, which can lead to an increase in the committed effective dose. Results obtained in preliminary studies indicate the occurrence of incorporation of {sup 131}I by workers involved in handling solutions for radioiodine therapy procedures. The evaluation was carried out in radiopharmacy lab (nuclear medicine service) of a public hospital located in the city of Rio de Janeiro. After confirmed the presence of the radioisotope, by a qualitative assessment, it was determined an experimental arrangement for sample collection and were detected and quantitated the presence of steam {sup 131}I during routine work. The average concentration of activity obtained in this study was 3 Bq / m{sup 3}. This value is below of Derived Concentration in Air (DCA) of 8.4 x 10{sup 3} Bq of {sup 131}I / m{sup 3} corresponding to a committed effective dose of 1.76 x 10{sup -4} mSv. These results demonstrate that the studied area is safe in terms of internal exposure of workers. However, the presence of {sup 131}I should be periodically reevaluated, since this type of exposure contributes to the increase of the individual effective doses. Based on the data obtained improvements were suggested in the exhaust system and the use of good work practices in order to optimize the exposures.

  6. Environmental analysis of the proton exchange membrane fuel cell on the subject of life cycle assessment; Analise ambiental da celula a combustivel de membrana trocadora de protons sob o enfoque da avaliacao do ciclo de vida

    Energy Technology Data Exchange (ETDEWEB)

    Fukurozaki, Sandra Harumi

    2006-07-01

    The energy is the fuel of growth and an essential requirement for the socioeconomic development. However, the current production model is based on fossil fuels, considered as threat to man and nature. As for, the relating to the human activities and their effects on the environment, they are handled by the implementation of a more rigid model of environmental control and the mobilization of the society in favor of technologies with less energy impact. In view of this scenario, the Proton Exchange Membrane Fuel Cell - PEMFC has been recognized as a key for the vital need of a clean and efficient energy. Considering the conventional power generation system, their advantages during usage configure its application as an ideal option for several utilities, especially in the mobile sector. Even though, the focus on several environmental evaluations in energy systems is referred back to the initial stage of it use, the employment relating to production of the system and to final destination should be considered, since these also present impacts. In the case of PEMFC, their previous and subsequent phases of use are issues related to the platinum catalysts, which indicates an environmental importance that cannot be overlooked. In this sense, the Life Cycle Assessment has been used to understand and to question the risks and opportunities that are associated to certain product, starting from a systemic concept of their relationships with the environment. It is precisely in this context that the present research intends to present its major contribution, starting from an exploratory study towards the its objectives to provide an environmental analysis of such technology linked to post stage of powder-use of the membrane electrode assembly - MEA, concerning the platinum catalysts, on the subject of Life Cycle Assessment - LCA. To attain such aim, the relationships between energy, environment and development are presented and discussed, as well as, the Fuel Cell technology and

  7. Energy efficiency standardizing in vertical pumps; Normalizacion de eficiencia energetica en bombas verticales

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, Rosa Aracely; Buendia Dominguez, Eduardo H. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    The Instituto de Investigaciones Electricas (IIE) supporting the Comision Nacional para el Ahorro de Energia (CONAE) (National Commission for Energy Saving) developed the project of a standard on energy efficiency of vertical pumps, turbine type with external motor. This documents has fulfilled the necessary formalities for the issuing of a norm, being published the Mexican Official Norm (NOM-001-ENER-1995) on December 22, 1995. This article relates the results of the study for the elaboration of this norm, considering the energy saving, as well as the economic evaluation that supports the project of the norm, indicating also the environmental impact that its implantation will have. [Espanol] El Instituto de Investigaciones Electricas (IIE) apoyando a la Comision Nacional para el Ahorro de Energia (CONAE) elaboro el anteproyecto de norma de eficiencia energetica en bombas verticales tipo turbina con motor externo. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma, habiendose publicado como Norma Oficial Mexicana (NOM-001-ENER-1995) el 22 de diciembre de 1995. En el presente articulo se mencionan los resultados del estudio para la realizacion de esta norma, considerando los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicando tambien el impacto ambiental que tendra su implantacion.

  8. Energy efficiency standardizing in vertical pumps; Normalizacion de eficiencia energetica en bombas verticales

    Energy Technology Data Exchange (ETDEWEB)

    Acosta Torres, Rosa Aracely; Buendia Dominguez, Eduardo H [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    The Instituto de Investigaciones Electricas (IIE) supporting the Comision Nacional para el Ahorro de Energia (CONAE) (National Commission for Energy Saving) developed the project of a standard on energy efficiency of vertical pumps, turbine type with external motor. This documents has fulfilled the necessary formalities for the issuing of a norm, being published the Mexican Official Norm (NOM-001-ENER-1995) on December 22, 1995. This article relates the results of the study for the elaboration of this norm, considering the energy saving, as well as the economic evaluation that supports the project of the norm, indicating also the environmental impact that its implantation will have. [Espanol] El Instituto de Investigaciones Electricas (IIE) apoyando a la Comision Nacional para el Ahorro de Energia (CONAE) elaboro el anteproyecto de norma de eficiencia energetica en bombas verticales tipo turbina con motor externo. Dicho documento ha cumplido con los tramites necesarios para la emision de una norma, habiendose publicado como Norma Oficial Mexicana (NOM-001-ENER-1995) el 22 de diciembre de 1995. En el presente articulo se mencionan los resultados del estudio para la realizacion de esta norma, considerando los ahorros energeticos, asi como la evaluacion economica que sustenta el proyecto de norma, indicando tambien el impacto ambiental que tendra su implantacion.

  9. The energy efficiency standards in Mexico; Las normas de eficiencia energetica en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Pulido, Ybo [Comision Nacional para el Ahorro de Energia, Mexico, D.F. (Mexico)

    2001-07-01

    actividades, asi como certificar, verificar e inspeccionar su cumplimiento. Las NOM son de aplicacion obligatoria porque tienen como finalidad establecer las caracteristicas y/o especificaciones, criterios y procedimientos que permitan proteger y promover el mejoramiento del medio ambiente y los ecosistemas, asi como la preservacion de los recursos naturales. La Secretaria de Energia expide las NOM sobre eficiencia energetica, las cuales son formuladas por el Comite Consultivo Nacional de Normalizacion para la Preservacion Uso Racional de los Recursos Energeticos (CCNNPURRE), que es presidido por el Director General de la Conae. La normalizacion de Eficiencia Energetica en Mexico ha permitido ahorros, en el consumo de energia electrica y termica, estimados para el 2001 de 7 700 GWh y una potencia electrica evitada de 1 270 MW, lo cual la ubica como una medida importante en el logro de los objetivos de la CONAE-CCNNPURRE, de concebir y promover estrategias y lineamientos de accion relativos al ahorro y uso eficiente y racional de la energia y como consecuencia la preservacion de los recursos naturales no renovables.

  10. Energetic sustainability: Challenges and options in Mexico; Sustentabilidad energetica: Retos y opciones en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Rosas Flores, Dionicio; Sheinbaum Pardo, Claudia [Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

    2000-07-01

    In this report present a general overview of energy trends and objectives of policy for Mexico, in the context of sustainable development. The work is divided in two main parts: the first one presents trends in energy use and potential, energy sector reform, social and economics indicators and revision of efficiency and renewable energy. The second part discusses options and instruments of energy politics for the country in regard of the sustainable development. The energy is central to concerns of sustainable development, affecting economic; the local and global environment, and social problems as poverty, population, health and education. Mexico should promote political energy that permit the fulfillment the energy requirements while developing strategies that help to alleviate the social problems and productivity, based on lesser environmental impacts. [Spanish] Este reporte presenta una vision sobre las tendencias energeticas de Mexico y plantea prioridades y objetivos de politica para el pais, en el contexto de desarrollo sustentable. El trabajo muestra dos partes principales: la primera seccion presenta tendencias en el uso de energia, potenciales energeticos e indicadores economicos y sociales, ademas de una revision de eficiencias y politicas de energias renovables. La segunda parte discute opciones, instrumentos y restricciones en el contexto del desarrollo energetico sustentable en el pais. La energia es un elemento central en el desarrollo ya que esta relacionado con la economia, el ambiente local y global y aspectos sociales como pobreza, poblacion, salud y educacion. Esto obliga en Mexico a promover politicas que permitan la cobertura de los requerimientos energeticos, las cuales deben desarrollarse de manera conjunta con estrategias, para ayudar a disminuir los problemas, productivos y sociales con menores impactos ambientales.

  11. Technical-economic study of energy efficiency in offshore industrial electrical systems; Estudio tecnico economico de eficiencia energetica en sistemas electricos industriales costa afuera

    Energy Technology Data Exchange (ETDEWEB)

    Fiscal Escalante, Raul [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    2001-07-01

    In this work the methodology of analysis and the results obtained are presented in an technical-economic study for the application of power efficiency measures for a marine platform. The methodology is considered in the following steps: 1) Technical evaluation of the installation 2) Technical analyses of the optimization alternatives 3) Economic evaluation of the selected optimization alternatives graphs of the thermal regime of the variation with respect to the generation, variation of the efficiency with respect to the generation, efficiency curve of the motor and the designed curve of the pump are presented. A table of general reference parameters and another one of particular reference is given. Also a table of the economic evaluation when changing the electrical motor by one more efficient is presented. It is concluded that a potential of energy saving exists in their processes, generating an opportunity to perform a technical-economic feasibility study in these facilities. [Spanish] En este trabajo se presenta la metodologia de analisis y los resultados obtenidos en un estudio tecnico-economico para la aplicacion de medidas de eficiencia energetica para una plataforma marina. Se plantea la metodologia en los siguientes pasos: 1) Evaluacion tecnica de la instalacion 2) Analisis tecnico de las alternativas de optimizacion 3) Evaluacion economica de las alternativas de optimizacion seleccionadas. Se muestran graficas de la variacion del regimen termico respecto a la generacion, variacion de la eficiencia respecto a la generacion, curva de eficiencia del motor y curva de diseno de la bomba. Se da una tabla de parametros de referencia generales y otra de referencia particulares. Tambien se presenta una tabla de la evaluacion economica al cambiar el motor electrico por uno mas eficiente. Se concluye que existe un potencial de ahorro de energia en sus procesos, generando una oportunidad para realizar estudios de factibilidad tecnica economica en dichas instalaciones.

  12. Information flow among researchers at IPEN - Instituto de Pesquisas Energeticas e Nucleares

    International Nuclear Information System (INIS)

    Sugai, Mioka

    1986-01-01

    The information flow among a group of researchers at the Instituto de Pesquisas Energeticas e Nucleares of the Comissao Nacional de Energia Nuclear/Sao Paulo (IPEN-CNEN/SP) was analysed by means of a study of use and non-use of formal and informal information channels. The study proposed suggesting ideas for the improvement of the information network, as a means of contributing to the future planning of the information transfer structure among the I PEN technical-scientific community. A structural interview was used to collect the data. The researchers were characterized under functional, academic and professional aspects. Their information needs were identified as well as the factors which affect such needs. The researchers behaviour while searching for information was analysed by means of the critical incident technique. The informal communication networks were also identified according to a sociometric technique. The results show that in the Department included in the study, information flows equally through formal and informal channels. It is evident that there is a small correlation between degree of use and degree of importance of information sources. There is no evidence that those who make little use of formal channels supply their information needs by use of informal channels. It was patent that non-accessibility is the key factor which influences the non-use of information. The motivation of the use of formal sources is significantly inhibited by the fact that the library collection is not brought up-to-date. Relatively intense informal communication was verified both inter and intra-divisions. It is also evident that researchers with higher academic degree make more frequent use of formal channels, and stand a greater possibility of being identified as gatekeepers. However, those researchers who are considered more productive, at their present function, are not always those who make more frequent use of formal channels. The conclusions show that in order

  13. Program for energetic efficiency in electrical motors: impact in the electric sector and an international comparative analysis of market and efficiency; Programa de eficiencia energetica em motores eletricos: seu impacto no setor eletrico e uma analise comparativa internacional de mercado e eficiencia

    Energy Technology Data Exchange (ETDEWEB)

    Soares, George A.; Kristoschek Filho, Omar A. [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil); Tabosa, Ronaldo de Paula [ELETROBRAS, Rio de Janeiro, RJ (Brazil). Programa Nacional de Conservacao de Energia Eletrica

    1999-07-01

    During the last thirteen years, the Brazilian National Program for Combat to the Electric Power Wasting - PROCEL has been developing various activities in the area of electrical motors and electronic actuation. In the initial stage, the program proceeded an evaluation of the national program for electric motors. In the second stage, the recommendations generated in the first stage were implemented, consisting of activities with a more technological characterization due to the necessity of more reliable databases and consideration of questions related to the improvement of the energetic performance. This work performs some analysis concerning to the questions on marketing and performance levels of Canada, USA and european countries. The differences between sales volumes, prices and strategies for establishment of minimum indexes are emphasized. Also, some activities of PROCEL related with the encouragement to the using of more efficient motors are presented.

  14. Methodology for sizing, energy analysis and selection of equipment for a biomass gasifier to drive an internal combustion engine; Metodologia de dimensionamento, analise energetica e selecao de equipamentos de um gaseificador de biomassa para o acionamento de um motor de combustao interna

    Energy Technology Data Exchange (ETDEWEB)

    Coronado, Christian Rodriguez; Silveira, Jose Luz [Universidade Estadual Paulista (FEG/UNESP), Guaratingueta, SP (Brazil). Fac. de Engenharia], e-mails: christian@feg.unesp.br, joseluz@feg.unesp.br; Arauzo, Jesus Perez [University of Zaragoza (UNIZAR), Zaragoza (Spain). Centro Politecnico Superior. Chemical and Environmental Engineering Dept.], e-mail: qtarauzo@unizar.es

    2006-07-01

    Alter both oil crisis, of 1973 and 1979, a bad effect of the elevated costs and continuously increment of the oil prices was noted, for this reason, the interest for renewable energies sources widely available in developing countries was increased. All over the world, governments have formulated main objectives for energies savings and search for friendly technologies, taking into account the effects related with the environment. The imminent scarcity of fossil fuels has made humanity the rational use of primary energies, as a result of these; new plants with improved technology have been conceived taking into account energy savings and efficiency improvement. In this context, biomass gasification technologies are important, since they consist in techniques of parallel production of electricity and heat from just one fuel. This work consists in the development of a gasifier down draft of 100 kW for an internal combustion engine, which includes its sizing process and its energy analysis. The sizing includes design facts and the parameters of the conditioning systems for the exhaust gas. This part is mainly based in the experience of a work group of the Zaragoza State University - Spain, UNIZAR, specialists in the construction of small down draft gasifiers, for every case, air will be used as a gasifier agent and as biomass forestall. The availability of biomass resources and the application of the national energetic view system are relevant. The gasifier will have a 100 kg/h of feeding, the energetic analysis includes the matter and energy balance and the respective efficient such cold as hot efficient of the exhaust gas. Moreover it will be tried the equipment recommended for the cleaning and conditioning of this gas fuel for this equipment in particular. (author)

  15. Hydrocarbon reserves, energy assurance and macroeconomics: a complex balance; Reservas de hidrocarburos, seguridad energetica y macroeconomia: un balance complejo

    Energy Technology Data Exchange (ETDEWEB)

    Alarco Tosoni, German [TYH Economia, S.A. de C.V., Mexico, D.F.(Mexico)

    2006-11-15

    The available public information relative to the limited discovered and undiscovered crude and natural gas reserves in Mexico, from an international comparison perspective, is analyzed. Through the evaluation of the national energy programs, a limited conception of energy security is made clear concerning that posed by the other countries within North America. Various scenarios are stated regarding proved/production reserves to 2020 which will induce, together with the notion of energy security, a reduction in the current production levels - crude oil exports. The paradox referring to the fact that given certain reduction levels in the exports' crude platform, both the product level as well as real public expenditure will rise, is discovered. Finally, the macroeconomic effects of the proposal and of the necessary complementary policies needed to be designed and implemented in order to improve our macroeconomic performance are also evaluated. [Spanish] Se analiza la informacion publica disponible sobre las reservas limitadas de crudo y gas natural descubiertas y no descubiertas de Mexico en una perspectiva internacional comparada. Al evaluar los programas energeticos nacionales se transparenta una concepcion limitada de la seguridad energetica, respecto de lo planteado por los otros paises de America del Norte. Se plantean diferentes escenarios de reservas probadas/produccion al 2020 que inducirian, conjuntamente con la incorporacion de la nocion de seguridad energetica, a reducir los niveles actuales de produccion - exportacion de crudo. Se descubre la paradoja de que para determinados niveles de reduccion de la plataforma de exportacion de crudo tanto el nivel de producto como de gasto publico real aumentan. Por ultimo, se evaluan tanto los efectos macroeconomicos de la propuesta como de algunas politicas complementarias que seria necesario disenar e implantar para mejorar nuestro desempeno macroeconomico.

  16. Development of a methodology and software for analysis of energy and economic feasibility of introducing natural gas facilities in residential an commercial sector; Desenvolvimento de metodologia e de software para analise de viabilidade energetica e economica da introducao de instalacoes para gas natural no setor residencial e comercial

    Energy Technology Data Exchange (ETDEWEB)

    Jesus, Marcos Fabio de; Torres, Ednildo Andrade [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Escola Politecnica. Lab. de Energia e Gas; Santos, Carlos Antonio Cabral dos [Universidade Federal da Paraiba (UFPB), Joao Pessoa, PB (Brazil). Lab. de Energia Solar; Campos, Michel Fabianski [PETROBRAS, Rio de Janeiro, RJ (Brazil). RedeGasEnergia

    2004-07-01

    With the increasing participation of the natural gas in the world-wide and national energy matrix, beyond the constant search for an alternative source of energy that has an acceptable behavior of the ambient point of view, they become each time more necessary studies to make possible the expansion of the use of this fuel in the diverse energy sectors, such as: Industrial, advertising, residential, to propagate, among others; Of these sectors, the residential one is what more it needs innovations and/or technological adaptations to exert a massive participation in the demand of the natural gas. This work has as objective to establish a methodology adjusted for analysis of the energy and economic viability of the introduction of installations for natural gas in the residential and commercial sector, as well as the implementation of a software that will more facilitate to the taking of decisions of this the confection of the plant low of the enterprise until the choice of the adjusted material for the installation of the tubing, besides showing to the viability technique - economic of the use of the natural gas for supplying all even though the energy necessities of this construction or of its joint participation with the electric energy or with the GLP. The methodology will mainly have support in first and the second law of the thermodynamics, beyond the norms Brazilian techniques that conduct this sector of the civil construction, taking in consideration the fixed and changeable costs of the energy construction of the construction and the involved ones. One expects, on the basis of the literature, that the introduction of installations for natural gas in the residential and commercial sector presents viability economic technique and, increasing with this the demand of this fuel and consequently its participation in the national energy matrix. (author)

  17. Application of the Life-Cycle Cost Analysis (LCCA) for established of energy efficiency standards: refrigerators sold in Brazil; Aplicacao da metodologia de analise do custo do ciclo de vida (ACCV) para o estabelicimento de padroes de eficiencia energetica: refrigeradores comercializados no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Silva Junior, Herculano Xavier da; Jannuzzi, Gilberto de Martino [Universidade Estadual de Campinas (UNICAMP), SP (Brazil); Queiroz, Guilherme de Castilho [Centro de Tecnologia de Embalagens (CETEA), Campinas, SP (Brazil)

    2006-07-01

    The goal of this paper is to present the work in the thesis developed by Silva Jr. (2005) who discusses the application of the methodologies of Life Cycle Cost Analysis (LCCA) as a tool to propose energy efficiency standards, additional to the voluntary labels already existing in the one-door Brazilian refrigerators. Another objective is to study the role of these instruments (energy efficiency labels and standards and environmental labels) as means to supply technical subsidies for the establishment of maximum level of electric energy consumption and environmental quality impact for electrical equipment in Brazil. The LCCA methodology allows to evaluate the impacts of the energy efficiency increasing in electrical equipment, resulting in important saving (energy, financial, carbon dioxide emissions avoided etc.) for the country and its citizens. The results reached in this studies offer important data to subsidize deep discussions with manufacturers and the government to stipulate minimum energy efficiency standards for the Brazilian refrigerators. Thus, with increase of 28,1% on the energy efficiency of the one-door Brazilian refrigerators in 2008 to reach a values of savings that can be in order of 54,63 TWh (with respective reduction of demand power of 208 MW), of US$ 6,23 Billions of Dollar (R$ 17,2 Billions of Reais) of reduction in the account of electric energy for the population and of approximately 22 billions of tons of CO{sub 2} not emitted on the environment after 30 years of the implantation of standard. These values, that can not be despised by government, manufacturers and consumers. One other interest of this work is to start the discussion, the possibility of the creation of environmental labelling (e.g., Green Seal - USA, Eco-label - EU etc.) that is an additional program/methodology, which, it may be utilized as support for development of technologies and for the increase of energy and environmental efficiency of the electric equipment. These

  18. The argentine electric sector reform and its correlation with energy efficiency; La reforma del sector electrico argentino y su relacion con la eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Carpio, Claudio [MGM International (Argentina)

    2005-04-15

    The reforms in the Argentine electrical sector and the effect these have originated in the energy efficiency policies for public sector are presented. The characteristics exposed of the Argentina Electric sector previous to the 1992 transformation are the departing base that gave rise to the reform fundaments, generating privatizations and a vertical economic scheme. The transformation of the electric sector departing from its environmental regulations yielded in a quality service, good electricity distribution, better prices and proper energy efficiency. [Spanish] Se presentan las reformas en el sector electrico argentino y el efecto que han tenido sobre las politicas de eficiencia energetica elaboradas en el sector publico. Las caracteristicas expuestas del sector electrico argentino previas a la transformacion de 1992 son la base de partida que dio lugar a los fundamentos de la reforma generando privatizaciones y un esquema economico vertical. La transformacion del sector electrico a partir de sus regulaciones energeticas y ambientales redituaron en calidad de servicio, de distribucion de electricidad, precios y en la propia eficiencia energetica.

  19. Development of a methodology for the evaluation of energy efficiency of central irrigation pivots; Desenvolvimento de uma metodologia para a avaliacao da eficiencia energetica de pivos centrais de irrigacao

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Aureo Cezar de [Centro Federal de Educacao Tecnologica de Petrolina (CEFET-Pet), PE (Brazil); Guimaraes Junior, Sebastiao Camargo; Camacho, Jose Roberto; Salerno, Carlos Henrique [Universidade Federal de Uberlandia (NERFAE/UFU), MG (Brazil). Fac. de Engenharia Eletrica. Nucleo de Eletricidade Rural e Fontes Alternativas de Energia

    2006-07-01

    It will be presented in this work a methodology for the evaluation of the energy efficiency of irrigation center systems by central pivot. Integrating water efficiency application with the energy associated to the sprinklers, adduction pipeline, pivot arm and pump systems, the proposed indexes make possible to evaluate the energy income of each component of the irrigation system, contributing for the increase of the global efficiency of the irrigated agriculture. (author)

  20. Energetic evaluation of low potential biomass gasifier coupled with a burner of the produced gas for generation of heat; Avaliacao energetica de um gaseificador de biomassa de baixa potencia, associado a um combustor do gas produzido, para geracao de calor

    Energy Technology Data Exchange (ETDEWEB)

    Martin, Samuel [Universidade de Brasilia (FAV/UNB), DF (Brazil). Fac. de Agronomia e Medicina Veterinaria], email: samuelmartin@unb.nr; Silva, Jadir Nogueira [Universidade Federal de Vicosa (UFV), MG (Brazil). Dept. de Engenharia Agricola; Machado, Cassio Silva; Zanatta, Fabio Luis; Galvarro, Svetlana F.S. [Universidade Federal de Vicosa (UFV), MG (Brazil)

    2011-07-01

    In the search of alternatives for sustainable socio-economic development, this study had the objective of evaluating the energetic performance of a concurrent flow biomass gasifier associated with a burner for the gas produced which was of low potential for air heating using a renewable energy source (substituting non-renewable). In this system 4 tests were performed using eucalyptus chips (tests 1 and 2) and logs (tests 3 and 4) as fuel, for the two fan motor frequencies of 60 and 50 hertz. Temperature in the combustion chamber was monitored, along with fuel consumption and other variables. In the tests, the average exhaust air temperature was maintained between 92.7 and 100.4 deg C, and the reduction in the motor frequency from 60 to 50 Hz caused an increase in the duration of the tests. The system presented the best energetic performance when utilizing a frequency of 60 Hz for both fuel types. However, the results of energy efficiency varied very little when comparing tests performed at the same fan frequency. Thus, the gasification process was little affected by variation in the physical characteristics of the tested fuels, and it was recommended that the equipment operate with a frequency of 60 Hz. (author)

  1. Evaluation of gains of energy efficiency in illumination with the use of proposed rulemaking labeling for buildings; Avaliacao dos ganhos em eficiencia energetica em iluminacao com o uso da proposta de regulamentacao de etiquetagem para edificios

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Guilherme Augusto Marques; Saidel, Marco Antonio [Universidade de Sao Paulo (USP), SP (Brazil). Escola Politecnica], Emails: guilherme.araujo2@poli.usp.br, saidel@usp.br

    2009-07-01

    This article aims to examine the gains in energy efficiency through the classification levels, assigned to the installation of lighting systems with the use of the proposed regulations for voluntary labeling of the level of energy efficiency in commercial buildings, and public services. Were produced three different simulations: the first, considering a survey of data in an existing building which is hosting an administrative part of the public power, composed of 275 dependences. The second and third simulations deal with the application in a lighting project in the same enterprise, in two different luminaries (composed of optical systems with and without fins, respectively). From these activities that guide the direct application of the methodology for preparation of projects have been established comparisons between the results and made comments on the rates of illuminance, the levels of efficiency and the use of luminaries. (author)

  2. Energetic analysis of a wood fired grain drier; Analise energetica de secador de graos a lenha

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Alessandro Torres [Universidade Estadual do Oeste do Parana (UNIOESTE), Marechal Candido Rondon, PR (Brazil). Grupo de Pesquisas em Ambiencia do Oeste do Parana], e-mail: atcampos3@yahoo.com.br; Melo, Evandro de Castro; Sousa e Silva, Juarez de [Universidade Federal de Vicosa (UFV), Vicosa, MG (Brazil). Dept. de Engenharia Agricola

    2004-07-01

    Aiming at the attendance of a small and medium size group of producers a four chambers fixed-bed dryer prototype with a mechanical revolving system was designed, constructed and energy performance tested. During drying for the prototype test, using coffee the revolving operation proceeded in two chambers which were connected to the dryer plenum at different positions and at a regular three-hours intervals; the other chambers remained static. The dryer operated at a drying-air temperature of 43 deg C and an air-flow of 21 m3 min-1 m-2. In the realized test the product moisture content was reduced from 43.1 to 12.7% w.b. over a 42-hours period. The specific energy consumption was 12.752 kJ per kilogram of evaporated water. The obtained results showed that chamber 1 which was submitted to the revolving operation presented the best work conditions due to your plenum connection position. (author)

  3. Energy saving in the house of social interest by means of the application of the power efficiency standard:NOM-020; Ahorro de energia en la vivienda de interes social mediante la aplicacion de la norma de eficiencia energetica: NOM-020

    Energy Technology Data Exchange (ETDEWEB)

    Diaz Jimenez, Rodolfo; Morillon Galvez, David [Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

    2001-07-01

    In face of the urgent necessity of saving and of using in an efficient way the energy, the Secretariat of Energy (Sener) through the Comision Nacional para el Ahorro de Energia, (CONAE) (National Commission for Energy Saving) has promoted the design and application of different measures and programs of energy efficiency. The elaboration of standards of energy efficiency has been a subject of great importance to foment the adequate use of the energy resources. For the residential sector the standard first draft exists: NOM-020-ENER-1998 energy efficiency in constructions: Standard for the covering of buildings for housing up to three floors. In this study the thermal analysis of the cover of one of the house models more used in the construction of houses of social interest in Mexico. By applying the methodology proposed by the first draft of the Standard the thermal gains by conduction in roof and walls, and by radiation in windows were determined. The analysis was performed for several cities of the country with different climates, the results were compared with the values proposed in the Standard, the viability of application of this Standard in the sector of the house of social interest was analyzed and finally the energy saving in ceasing using air conditioning systems for interiors. [Spanish] Ante la imperiosa necesidad de ahorrar y usar de forma eficiente la energia, la Secretaria de Energia (Sener) a traves de la Comision Nacional para el Ahorro de Energia, (CONAE) ha promovido el diseno y aplicacion de diferentes medidas y programas de eficiencia energetica. La elaboracion de normas de eficiencia energetica ha sido un rubro de gran importancia para fomentar el uso adecuado de los recursos energeticos. Para el sector residencial existe el anteproyecto de norma: NOM-020-ENER-1998 ficiencia energetica en edificaciones: Norma para la envolvente de los edificios para uso habitacional hasta de tres pisos. En este estudio se presenta el analisis termico de la

  4. Analysis of scientific and technical production of IPEN-CNEN/SP in the period of 1984 to 1988

    International Nuclear Information System (INIS)

    Sugai, M.

    1989-01-01

    An analysis of scientific and technical production of Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP in the period of 1984 to 1988 is presented. It includes articles, dissertation, thesis, books, reports and papers presented in scientific meetings or published in the Publicacao IPEN series. (C.M.)

  5. Present conditions and perspectives of the standardization of the energy efficiency in Mexico; Actualidad y perspectivas del programa de normalizacion de la eficiencia energetica en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Chu Pulido, Henry Anli; Sanchez Ramos, Itha [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1999-12-31

    The first energy efficiency standards of compulsory type were implemented in some states of the U.S. and in 1990 this country`s Federal government adopted them, since then, they have spread all over the world. This paper describes that under the frame of the National Program for Energy Modernization (1900-1994) and the National Development Program (1995-2000) of Mexico were considered as a priority the rational use of the energy, the conservation of the energy resources and the environmental protection. It is particularly mentioned, the standardization program of energy efficiency that has been developed that includes the limiting specification of the energy consumption or equipment efficiency, an essay method to determine the energy performance and the description of the label that will inform the users of the equipment energy performance [Espanol] Las primeras normas de eficiencia energetica de tipo obligatorio se implantaron en algunos estados de Estados Unidos y en 1990 las adopto el gobierno federal de ese pais, a partir de entonces se han difundido por todo el mundo. En el presente trabajo se describe que en el marco del Programa Nacional de Modernizacion Energetica (1900-1994) y del Plan Nacional de Desarrollo (1995-2000) de Mexico, se consideran como prioridad el uso racional de energia, la conservacion de recursos energeticos y la proteccion al medio ambiente. Se menciona particularmente, el programa de normalizacion de eficiencia energetica que se ha desarrollado incluye la especificacion del limite de consumo energetico o eficiencia del equipo, un metodo de ensayo para determinar el rendimiento energetico y la descripcion de la etiqueta que informara a los usuarios sobre el comportamiento energetico del equipo

  6. Present conditions and perspectives of the standardization of the energy efficiency in Mexico; Actualidad y perspectivas del programa de normalizacion de la eficiencia energetica en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Chu Pulido, Henry Anli; Sanchez Ramos, Itha [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1998-12-31

    The first energy efficiency standards of compulsory type were implemented in some states of the U.S. and in 1990 this country`s Federal government adopted them, since then, they have spread all over the world. This paper describes that under the frame of the National Program for Energy Modernization (1900-1994) and the National Development Program (1995-2000) of Mexico were considered as a priority the rational use of the energy, the conservation of the energy resources and the environmental protection. It is particularly mentioned, the standardization program of energy efficiency that has been developed that includes the limiting specification of the energy consumption or equipment efficiency, an essay method to determine the energy performance and the description of the label that will inform the users of the equipment energy performance [Espanol] Las primeras normas de eficiencia energetica de tipo obligatorio se implantaron en algunos estados de Estados Unidos y en 1990 las adopto el gobierno federal de ese pais, a partir de entonces se han difundido por todo el mundo. En el presente trabajo se describe que en el marco del Programa Nacional de Modernizacion Energetica (1900-1994) y del Plan Nacional de Desarrollo (1995-2000) de Mexico, se consideran como prioridad el uso racional de energia, la conservacion de recursos energeticos y la proteccion al medio ambiente. Se menciona particularmente, el programa de normalizacion de eficiencia energetica que se ha desarrollado incluye la especificacion del limite de consumo energetico o eficiencia del equipo, un metodo de ensayo para determinar el rendimiento energetico y la descripcion de la etiqueta que informara a los usuarios sobre el comportamiento energetico del equipo

  7. Benefits in the electrical systems through an energy efficiency program; Beneficios en los sistemas electricos a traves de un programa de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Kushler, M. (and others)

    2006-01-15

    The results of the search for electric efficiency programs providing savings during the hot summer days in the United States are presented. This search was named The Electric Energy Efficiency Programs Focused on Reliability and was executed in 50 states of the United States of America with the purpose of describing examples of successful programs that would help to guarantee the uninterrupted power supply, i.e. reliable by means of the consumer side demand management. Here the methodology of the project is described, the results of a discriminatory scrutiny of different programs in 50 states are presented, followed by a description of 22 programs of energy efficiency that were located as study cases along with the executive and legislative order measures taken to guarantee the reliability of the electric energy. [Spanish] Se presentan los resultados de la busqueda de programas de eficiencia energetica que proporcionen ahorros durante los dias calurosos del verano en Estados Unidos. Esta busqueda se titulo Los Programas de Eficiencia Energetica Enfocados a la Confiabilidad y fue realizada en 50 estados de la union americana con el objetivo de describir ejemplos de programas exitosos que ayudaran a garantizar un suministro electrico ininterrumpido, i. e. confiable por medio de una administracion de la demanda del lado del consumidor. Aqui se describe la metodologia del proyecto, se presentan los resultados de un escrutinio discriminatorio de diferentes programas en los 50 estados, seguidos de una descripcion de 22 programas de eficiencia energetica que se ubicaron como casos de estudio junto con las medidas de orden ejecutivo y legislativo tomadas para garantizar la confiabilidad de la energia electrica.

  8. Controlled environment laboratory for the energy certification of refrigeration and air conditioning systems; Laboratorio de ambiente controlado para la certificacion energetica de sistemas de refrigeracion y aire acondicionado

    Energy Technology Data Exchange (ETDEWEB)

    Ambriz, Juan Jose; Romero Paredes, Hernando; Dorantes, Ruben [Universidad Autonoma Metropolitana, Mexico, D.F. (Mexico)

    1999-07-01

    In this paper the general characteristics of the Controlled Environment Laboratory (CELAB) are described and some of the possible tests that could be performed in this device to evaluate the energy efficiency in air conditioning systems, domestic refrigeration and industrial refrigeration, as well as tests to evaluate the hydrothermal comfort in national populations, are presented. [Spanish] En este trabajo se describen las caracteristicas generales del Laboratorio de Ambiente Controlado (LAB), y se presentan algunas de las posibles pruebas que podran ser desarrolladas en este dispositivo para evaluar la eficiencia energetica en sistemas de aire acondicionado, refrigeracion domestica y refrigeracion industrial, asi como para pruebas para evaluar el confort hidrotermico en poblaciones nacionales.

  9. Promoting energy efficiency: supporting Public Administration and Local Bodies; Promuovere l'efficienza energetica : il supporto alla Pubblica Amministrazione e agli Enti Locali

    Energy Technology Data Exchange (ETDEWEB)

    Fasano, G; Manila, E [Dipartimento tecnologie per l' energia, le fonti rinnovabili e il risparmio energetico, ENEA (Italy)

    2008-11-15

    ENEAS's institutional tasks include technical and scientific support to Public Administration and Local Bodies in the field of energy. Recently such a role has been strengthened by setting up the Agency for Energy Efficiency which ENEA is responsible for. [Italian] Tra i compiti istituzionali dell'ENEA vi e quello di fornire un supporto tecnico scientifico alla PA e agli Enti Locali in tema di energia. Tale ruolo e stato di recente rafforzato con l'istituzione dell'Agenzia per l'Efficienza Energetica affidata all'Ente.

  10. Implications of energy reform on Mexican legislation for new and conventional energy technologies; Implicaciones de la reforma energetica sobre la legislacion mexicana con respecto a tecnologias energeticas nuevas y convencionales

    Energy Technology Data Exchange (ETDEWEB)

    Bautista Rodriguez, C. Moises; Tapia Pachuca, A. Belen [Alter Energias Grupo, Puebla (Mexico). E-mail: celso.bautista@thyssenkrupp.com; Gaytan Cruz, Veronica; Rivera Marquez, J. A.; Marin Torres, J. Lucina (Benemerita Universidad Autonoma de Puebla, Puebla (Mexico)

    2009-09-15

    de pilas domesticas desechadas. La legislacion sobre el tema se reduce a un proyecto de Norma Mexicana No Obligatoria, propuesta desde el 2006 sin aplicacion hasta el momento de la redaccion del presente documento. Ademas de implicar un impacto ambiental nocivo por la falta de regulacion, tambien representa un derroche energetico de impacto sobre la economia de los usuarios, al desecharse las pilas con una carga energetica residual aun importante (>60 %). En este trabajo se realiza un analisis sobre la reciente Reforma Energetica Mexicana sobre la regulacion en el uso de tecnologias alternativas. En comparacion con la legislacion internacional, la mexicana observa bases poco claras e incompletas, la falta de instituciones cientificas de orden gubernamental como asesores tecnologicos y la falta de una legislacion clara, completa, apegada a los principios internacionales a favor del medio ambiente y la sociedad. Estas caracteristicas ponen en riesgo desde su origen la normatividad y su aplicacion en la sociedad mexicana, implicando tambien la perdida de los beneficios en la aplicacion de tecnologias limpias y de mayores rendimientos, sin dejar de representar un retrazo tecnologico, economico, ambiental y social.

  11. Viva la revolucion energetica : in two short years, energy-smart Cuba has bolted past every country on the planet

    Energy Technology Data Exchange (ETDEWEB)

    Guevara-Stone, L. [Solar Energy International, Carbondale, CO (United States)

    2008-07-01

    The World Wildlife Fund (WWF) recently declared Cuba to be the only country in the world that is approaching sustainable development. The assessment was based on the United Nations Development Programme's Human Development Index (HDI) which is calculated using life expectancy, literacy and education per capita GDP. In the mid-1990s Cuba embarked on a campaign to save energy and use more renewables, including wind and solar energy. Equipping off-grid public schools, health clinics and social centres with solar energy panels made lights, computers and educational television programs accessible to all students. An effort in 2005 to decentralize energy involved generating electricity in smaller substations. More than 3,000 MW of power is now produced in 110 municipalities and blackouts have been essentially eliminated. In 2006, Cuba launched its Revolucion Energetica, an energy conservation plan to upgrade its 11 antiquated and inefficient thermoelectric plants. The country now consumes 34 per cent less kerosene, 37 per cent less liquefied petroleum gas and 80 per cent less gasoline. The five main aspects of the energy conservation plan are energy efficiency and conservation; increasing the availability and reliability of the national grid; incorporating more renewable energy technologies into its energy portfolio; increasing the exploration and production of local oil and gas; and international cooperation. In 2 years, nearly 2 million refrigerators, 1 million fans, 182,000 air conditions and 260,000 water pumps were replaced with more energy efficient models and compact fluorescent light bulbs were handed out for free until all incandescent bulbs were replaced. Cuba's per capita energy consumption is one-eighth that of the United States, while its access to health services, education levels and life expectancy match those of the United States. A new residential electricity tariff gives a favourable rate to residents who consume less than 100 kWh per month

  12. Financing structure for the hydroelectric sector: the Companhia Energetica de Sao Paulo - CESP case; Estrutura de financiamento do setor hidreletrico: o caso da CESP

    Energy Technology Data Exchange (ETDEWEB)

    Leme, Thomaz Garcez

    1987-12-31

    The objective of this dissertation is to study the financial resources made use by Companhia Energetica de Sao Paulo - CESP - for its implantation and later expansion, during the period of 1967 to 1980. The motivation in developing this subject originated of CESP`s importance in the Brazilian electric power sector. The dissertation is divided into three chapters. The first chapter describes the power sector in the state of Sao Paulo before CESP`s creation and after its consolidation. The second chapter studies some matter that shows the importance of company in the Brazilian power sector. In the third chapter, we study the performance of own resources and the third resources in CESP`s financing. At the end of the study the most important conclusion is that the own resources, more than third resources, were the prime motive liable in CESP`s financing during the period. (author) 102 refs., 23 figs.

  13. Financing structure for the hydroelectric sector: the Companhia Energetica de Sao Paulo - CESP case; Estrutura de financiamento do setor hidreletrico: o caso da CESP

    Energy Technology Data Exchange (ETDEWEB)

    Leme, Thomaz Garcez

    1988-12-31

    The objective of this dissertation is to study the financial resources made use by Companhia Energetica de Sao Paulo - CESP - for its implantation and later expansion, during the period of 1967 to 1980. The motivation in developing this subject originated of CESP`s importance in the Brazilian electric power sector. The dissertation is divided into three chapters. The first chapter describes the power sector in the state of Sao Paulo before CESP`s creation and after its consolidation. The second chapter studies some matter that shows the importance of company in the Brazilian power sector. In the third chapter, we study the performance of own resources and the third resources in CESP`s financing. At the end of the study the most important conclusion is that the own resources, more than third resources, were the prime motive liable in CESP`s financing during the period. (author) 102 refs., 23 figs.

  14. Evaluation of saving measurements and energetic efficiency in air-conditioning systems; Evaluacion de medidas de ahorro y eficiencia energetica en sistemas de climatizacion

    Energy Technology Data Exchange (ETDEWEB)

    Perez Lombard, L [Asociacion de Investigacion y Cooperacion de Andalucia (Spain); Ortiz, J [Building Research Establishment (United Kingdom); Riviere, P [Armines-ecole des mines de Paris (France)

    2006-04-15

    Buildings require an adequate air conditioning to offer workers a labor environment where there is thermal comfort. A study was performed in three different European places which count on several climates. The conclusion was the following: in order to analyze the energy efficiency in edifications it is fundamental the simulation tools use with the purpose of calculating the consumption and evaluating the saving measurements. [Spanish] Los edificios requieren de una climatizacion adecuada para que los que ahi operan puedan hacerlo dentro de un ambiente laboral donde exista el confort termico. Se llevo a cabo un estudio en tres lugares de Europa poseedores de diferentes climas y se concluyo que para poder analizar la eficiencia energetica de climatizacion en las edificaciones es imprescindible el uso de herramientas de simulacion con el proposito de calcular el consumo y evaluar las medidas de ahorro.

  15. Energy security. Reflection about the challenges and the alternatives for Mexico; Seguridad energetica. Reflexion en torno a los retos y las alternativas para Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Melgar, Lourdes; Velasco Ibarra, Enrique [Secretaria de Energia (Sener) (Mexico)

    2007-04-15

    The two current major topics of the international discussion are the energy security and the world warming. Since 2005, it is searched to go forward with regard to the design of the alternative policies, which at the same time make possible both to assure the energy supply and to restrict the emissions. Mexico, therefore, is appealed both to assume its international leadership to confront the challenges of being a country with a consumer profile. [Spanish] La seguridad energetica y el cambio climatico son hoy temas centrales del debate internacional. A partir de 2005, se busca avanzar en el diseno de politicas alternativas que permitan a la vez asegurar el abasto energetico y limitar las emisiones. Mexico esta llamado a asumir su liderazgo internacional y a enfrentar los desafios de pais con perfil de consumidor.

  16. Goals of energy efficiency: sectorial projections; Metas de eficiencias energeticas: projecoes setoriais

    Energy Technology Data Exchange (ETDEWEB)

    Badanhan, Luis Fernando; Souza, Hamilton Moss [Ministerio das Minas e Energia (SPE/MME), Brasilia, DF (Brazil). Secretaria de Planejamento Energetico. Dept. de Desenvolvimento Energetico

    2010-07-01

    This paper projects annual goals of energy efficiency discriminated by economy sectors, taking as reference the projection of electric power reduction of 10% in the year of 2030, stipulated in the Energy National Plan (ENP 2030). As introduction for the analysis, the paper presents the methodological aspects of energy efficiency projection presently adopted for the planning of Brazilian electric system expansion for long and average terms. For the projection of energy efficiency goals, it was developed an econometric model based on indexes of demand of energy discriminated for each economic sector. From the results, a sensibility analysis was made considering different ratios of Gross National Product growing.

  17. Energy crisis and rationing: a comparison between the argentinian and brazilian programs; Crisis energetica y racionamiento: los programas de Argentina y Brasil, una comparacion

    Energy Technology Data Exchange (ETDEWEB)

    Urbiztondo, Santiago; Navajas, Fernando [Fundacion de Investigaciones Economicas Latinoamericanas (FIEL)(Argentina)

    2006-01-15

    Although they have been equitable compared, the energy policies taken by Brazil and Argentina as a solution to the energy crisis lived by each one of these countries in years 2001 and 2002, they have enormous differences in terms of the real problem and nature of the established measures. Firstly the central aspects of the demand rationing mechanism adopted by Brazil for the electrical crisis of 2001 are presented. Afterwards the measures adopted in Argentina during the 2004 crisis in the electricity and natural gas rationing are discussed. From this exhibition of facts, comparisons are made and conclusions extracted looking forward to clarify the important differences separating both cases, differences that as the study reveals meant for the Argentine scheme the breach of the expected objectives. In the last section the changes implemented in the Argentine scheme are reflected during year 2005 to counteract the bad results obtained, nevertheless this modifications attacked only in a partial way the original program weaknesses. [Spanish] Si bien han sido comparadas equitativamente, las politicas energeticas tomadas por Brasil y Argentina como solucion a las crisis energeticas vividas por cada uno en el 2001 y 2004 presentan enormes diferencias a nivel de problema real y naturaleza de las medidas establecidas. Primeramente son presentados los aspectos centrales del mecanismo de racionamiento de la demanda adoptados por Brasil en la crisis electrica de 2001. Luego se comentan las medidas adoptadas en Argentina durante su crisis en el ano 2004 en el racionamiento de electricidad y gas natural. A partir de esta exposicion de hechos se realizan comparaciones y se extraen conclusiones que buscan clarificar las importantes diferencias que separan a ambos casos, diferencias que, como revela el estudio, significaron para el esquema argentino el incumplimiento de los objetivos esperados. En la ultima seccion se reflejan los cambios implementados en el esquema argentino

  18. Specialization in energetical area. Training of post graduate; Especializacion en el area energetica. Formacion de postgrado

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez, F. J.; Aguero, J. J.

    2006-07-01

    This article describes the experience in the collaboration between the University and Tecnatom in the development of Master-degree programmes in the area of energy. It analysis two post graduate courses already developed: the Master in Technologies of Electrical Power Generation and the Master in Energetic Efficiency both delivered in cooperation with the Escuelas Tecnicas Superiores de Ingenieros Industriales of Madrid and Barcelona Politecnica University respectively. (Author)

  19. Turbine Energy Evaluation by internal dimensional control; Evaluacion energetica de turbinas por control dimensional de internos

    Energy Technology Data Exchange (ETDEWEB)

    Mediavilla, F. [Tecnatom. Madrid (Spain)

    2000-07-01

    To maintain the optimum thermal performance in a high level throughout the life of the turbines requires a good testing program, proper analysis of the test data, and a steam path audit during turbine overhauls. If from operating data analysis collected during the performance test before the outage shows that the efficiency of the turbine is coming down, the steam path audit, that is an internal inspection and a dimensional control of the internals, identity and quantity causes of performance degradation like, seal leakages, excessive clearances, solid particle erosion damages, blades deposits and other losses. The steam path audit assigns the heat rate penalties associated with each of these individual losses to the total degradation. This are used to make cost-effective maintenance decisions during the course of the overhaul. After repairs, a closing steam path audit is conducted during the re assembly of the turbine in order to predict return to service condition of the machine and to provide a quality control check on outage repairs. (Author)

  20. Energy efficiency index to artificially conditioned buildings; Indice de eficiencia energetica para edificios climatizados artificialmente

    Energy Technology Data Exchange (ETDEWEB)

    Jota, Patricia Romeiro da Silva; Santos, Carla da Silva; Costa, Kelly Luciene C. [Centro Federal de Educacao Tecnologica de Minas Gerais (CEMIG/CEFET), Belo Horizonte, MG (Brazil). Centro de Pesquisa em Energia Inteligente

    2010-07-01

    Conditioning buildings has been growing in number and are responsible for a significant portion of the energy used worldwide. The building energy use can be measured by the index of energy performance and specific fuel consumption (EC). The specific consumption is an index where the energy is normalized by the factors that affect energy use in order to obtain an index to explain variations in consumption. In this paper, we present a methodology to obtain a specific consumption that takes into account one of the factors that most affect energy use in these buildings, that is, the external temperature. The study is based on analysis of consumption of air conditioning system according to temperature. Through this analysis we obtain a function to facilitate the standardization of energy use, depending on the temperature outside. This methodology was tested in previous work on real buildings without stratification of energy, and this work will be presented a case study of a building whose energy measurement is stratified. The proposed index is the ratio between the energy consumption of air conditioning system corrected by the temperature through the function K(T). It was possible to demonstrate the efficiency of the index to eliminate the effect of temperature and thus to evaluate the evolution of specific consumption over the months analyzed. (author)

  1. Energy efficiency / economic in agroecosystems; Eficiencia energetica/economica em agroecossistemas

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, Luis Carlos Ferreira de; Bueno, Osmar de Carvalho; Esperancini, Maura Seiko Tsutui [Universidade Estadual Paulista Julio de Mesquita Filho (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas

    2010-07-01

    The energy and economic evaluation of agroecosystems is important in the sense of appraise as maintainable these can be so much of the point of view energy as economic. The objective of the present paper was to show, starting from a case study, the construction of an indicator of energy/economic efficiency, whose results for four existent systems of corn production in the study area presented indexes that varied between 22.4 and 31.6. Of the reading of those values was possible to evaluate that all of the appraised systems show sustainability of long and short term. The proposed indicator if it shows solid in the agroecosystems appreciation concerning the analysis of your energy/economic sustainability. (author)

  2. Energy conservation programs developed by PETROBRAS; Programas de eficiencia energetica desenvolvidos pela PETROBRAS

    Energy Technology Data Exchange (ETDEWEB)

    Maues, Jair Arone; Marinho, Frederico Augusto Varejao [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The two oil shocks of the 70s provoked a great swerve of course in PETROBRAS during the 80s and 90s. The most important and well known was the strategic decision of exploring oil under the sea. Another important area of the Company includes internal programs for cutting its own energy use and external programs, encouraging their products end-users to rationalize fuel's use. After 1974, our refineries concentrated efforts in level reduction of self-consumption fuel. In the 90s, the Federal Government introduced two energy conservation programs. One created Energy Saving Internal Committees - CICE - in all PETROBRAS' operational units. Another one established a National Program for Oil and Natural Gas Conservation - CONPET. PETROBRAS is in charge of the development and implementation of projects related to this. All these efforts were thoroughly successful. The currently oil production is higher than the country consumption. Nonetheless, as new exploratory frontiers must develop to hold this self-sufficiency in progress, conservation energy programs also have to be continuously updated. This paper presents a balance of the projects implemented since the creation of both programs, a critical analysis on the achieved results and, finally, suggestions on how to improve the effective accomplishment of the initially proposed targets. (author)

  3. Rural electric power infrastructure and infantile work; Infraestrutura energetica rural e incidencia de trabalho infantil

    Energy Technology Data Exchange (ETDEWEB)

    Schmid, Aloisio Leoni [Parana Univ., Curitiba, PR (Brazil). Dept. de Arquitetura]. E-mail: alschmid@uol.com.br

    2000-07-01

    Based both on the data available at the IBGE (Brazilian Geographic and Statistical Institute) Worldwide Web site from the Censo Agropecuario de 1996 and on the premise, that human energy is one of the most important energy sources in rural areas, the existence of a correlation of infant work and electric energy infrastructure in Brazilian rural properties was investigated. The verification was conducted first by Municipality, and second by product. Analysis covered agriculture, poultry and extractive practices. As a result, first part led to no correlation at all. However, the second part suggested a correlation to exist between share of rural workers under 14 and share of rural properties not having access to electric energy services. This correlation refers to the share of workers being both under 14 and belonging to the owner's family, corroborating the indication, in the literature, of infant work being a familiar tradition in the Brazilian countryside. Finally, the advance of the investigations with an approach more specific to region and character of economic activity is recommended. (author)

  4. Energy conservation programs developed by PETROBRAS; Programas de eficiencia energetica desenvolvidos pela PETROBRAS

    Energy Technology Data Exchange (ETDEWEB)

    Maues, Jair Arone; Marinho, Frederico Augusto Varejao [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The two oil shocks of the 70s provoked a great swerve of course in PETROBRAS during the 80s and 90s. The most important and well known was the strategic decision of exploring oil under the sea. Another important area of the Company includes internal programs for cutting its own energy use and external programs, encouraging their products end-users to rationalize fuel's use. After 1974, our refineries concentrated efforts in level reduction of self-consumption fuel. In the 90s, the Federal Government introduced two energy conservation programs. One created Energy Saving Internal Committees - CICE - in all PETROBRAS' operational units. Another one established a National Program for Oil and Natural Gas Conservation - CONPET. PETROBRAS is in charge of the development and implementation of projects related to this. All these efforts were thoroughly successful. The currently oil production is higher than the country consumption. Nonetheless, as new exploratory frontiers must develop to hold this self-sufficiency in progress, conservation energy programs also have to be continuously updated. This paper presents a balance of the projects implemented since the creation of both programs, a critical analysis on the achieved results and, finally, suggestions on how to improve the effective accomplishment of the initially proposed targets. (author)

  5. Construction components and energy efficiency in buildings; Componentes de construccion y eficiencia energetica en edificios

    Energy Technology Data Exchange (ETDEWEB)

    Bansal, N.K.; Bhandari, M.S.; Kummar, P.S. [Centro para el Estudio de Energia, Instituto Hindu de Tecnologia, Hauz Khas, Nueva Delhi (Indonesia)

    2005-01-15

    An energy efficiency analysis to a set of buildings was made in India to quantify the effects of the individual design concepts with respect to the energy system in general. The saving potential of energy of different concepts as well as the orientation, windows, air cavities, insulation, etc. was quantified for the different climatic conditions that prevail in most of the Central India regions. It is demonstrated that the specific requirement of heat energy can be reduced to 300 kWh/m{sup 2} a (U{sub edifice} = 2.13 W/m{sup 2} K) for a building of normal construction up to 143 kWh/m{sup 2} a (U{sub edifice} = 0.95 W/m{sup 2} K) when using ceiling insulation and walls and by means of the use of double glass windows. [Spanish] Se realizo el analisis de eficiencia de energia a un conjunto de edificios en la India, para cuantificar los efectos de los conceptos individuales de diseno respecto al sistema de energia en general. El potencial de ahorro de energia de distintos conceptos, como la orientacion, ventanas, cavidades de aire, aislamiento, etc. fue cuantificado para las distintas condiciones climaticas que prevalecen en la mayoria de las regiones de India central. Se demuestra que el requerimiento especifico de energia calorifica puede ser reducida de 300 kWh/m{sup 2} a (U{sub edificio} = 2.13 W/m{sup 2} K) para un edificio de construccion normal hasta 143 kWh/m{sup 2} a (U{sub edificio} = 0.95 W/m{sup 2} K) al usar un aislante en el techo, paredes y mediante el empleo de ventanas de doble vidrio.

  6. Statistic analysis of grouping in evaluation of the behavior of stable chemical elements and physical-chemical parameters in effluent from uranium mining; Analise de agrupamento na avaliacao do comportamento de elementos quimicos estaveis e parametros fisico-quimicos em efluente de mineracao de uranio

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Wagner de S., E-mail: wspereira@inb.gov.br, E-mail: pereirarsj@gmail.com [Universidade Federal Fluminense (GETA/LARARA-PLS/UFF), Niteroi, RJ (Brazil). Grupo de Estudos em Temas Ambientais. Laboratorio de Radiobiologia e Radiometria Pedro Lopes dos Santos; Py Junior, Delcy de A.; Dores, Luis A. de C.B.; Campelo, Emanuele L.C.; Morais, Gustavo F. de; Kelecom, Alphonse, E-mail: delcy@inb.gov.br, E-mail: kclecom@uol.com.br [lndustrias Nucleares do Brasil (UTM/INB), Pocos de Caldas, MG (Brazil). Unidade de Tratamento de Minerios; Pereira, Juliana R. de S., E-mail: pereirarsj@gmail.com [Universidade Federal de Alfenas, Pocos de Caldas, MG (Brazil)

    2013-10-01

    The Ore Treatment Unit (UTM) is a uranium mine off. The statistical analysis of clustering was used to evaluate the behavior of stable chemical elements and physico-chemical variables in their effluents. The use of cluster analysis proved effective in the evaluation, allowing to identify groups of chemical elements in physico-chemical variables and group analyzes (element and variables ). As a result, we can say, based on the analysis of the data, a strong link between Ca and Mg and between Al and TR{sub 2}O{sub 3} (rare earth oxides) in the UTM effluents. The SO{sub 4} was also identified as strongly linked to total solids and dissolved and these linked to electrical conductivity. Other associations existed, but were not as strongly linked. Additional collections for seasonal evaluation are required so that assessments can be confirmed. Additional statistics analysis (ordination techniques) should be used to help identify the origins of the groups identified in this analysis. (author)

  7. ANALISI ENERGETICA DI CANTIERI DI MECCANIZZAZIONE LEGGERA PER L’UTILIZZAZIONE DI UN CEDUO DI EUCALIPTO

    Directory of Open Access Journals (Sweden)

    Sanzio Baldini

    2007-09-01

    Full Text Available The work was turned near Crotone (KR, in a 20 year-old plantation of Eucalyptus occidentalis Endl. positioned in hill zones, with average slope next to 27%. The utilisation system was the Full Tree System (FTS. The felling on the six yards has been done by chainsaw and the first coppice bunching was manual. fts 1, 2 - The extraction has been done by one drum forest winch applied to the three point hitch of a wheeled farm tractor forest version. fts 3, 4 - The extraction has been done by two drums forest winch, applied to the three point hitch of a wheeled farm tractor forest version. fts 5,6 - The extraction has been done by light tower yarder powered by one drum forest winch applied to the three point hitch of a wheeled farm tractor forest version. fts 1, 3 and 5 - At the landing the coppice have been processed by chainsaw in 2 meters length trunks. The slash accumulated and the trunks staked manually. fts 2, 4 and 6 - At the landing the coppice have been chipped by drum chipper with manual feed. The machine was a tractor powered chipper. At the landing the wood has been differentiated in two types. The type from the yards “fts 1,3,5” were 2 meters length trunks and the other type from the yards “fts 2,4,6” were chips for energy production. For the 2 meters length trunks the transport has been done by truck with 16 t of load capacity, and hydraulic crane. This material at the staple will be chipping by drum chipper with autonomous engine and mechanical feed. The chips transport will be done by truck with 17 t of load capacity. From the working times analysis and the wood quantitative obtained we studied the energy balance in the yards. We used the GER (Goss Energy Requirement method. From the results obtained, the best work methodology seems to be that of full trees chipping directly at the landing and the chips transport at the staple. For the bunching and the extraction the best productivity result is given from the tractor with one

  8. Comparison of the energy demand for comfort in houses of social interest in the municipality of Jiutepec, using the methodologies: degrees-day and TRNSYS; Comparacion de la demanda energetica para el confort de viviendas de interes social en el municipio de Jiutepec, utilizando las metodologias de grados-dia y de TRNSYS

    Energy Technology Data Exchange (ETDEWEB)

    Gijon, Miguel; Alvarez, Gabriela; Aguilar, Jorge; Xaman, Jesus; Sima, Efrain; Flores, Jason (Mexico)

    2009-07-15

    In this article a thermal-environmental study is presented in order to evaluate the energy demand in the Morelos state. From collected climatologic data in seven automatic weather stations a comparative diagnosis by the application of two methodologies is realized, such as the one of the Degrees-day and the transitory thermal simulation of TRNSYS to determine the energy demand in traditional dwellings of social interest located in different regions of the State. In the methodology of the degrees-day the ambient temperature for two seasons of the year is used (rainy and dry) and the energy demand for the comfort in the Morelos State is evaluated. For the thermal simulation with the TRNSYS the climatic data obtained in monthly averages is used to determine the thermal loads of the house and the energy requirements in the different regions of the State. The results of the energy demand obtained by both methodologies for the municipality of Jiutepec and a statistic analysis of the existing relation between the degrees-day of cooling and the energy demand for cooling that the dynamic simulations deliver are presented. [Spanish] En este articulo se presenta un estudio termico-ambiental a fin de evaluar la demanda de energia en el Estado de Morelos. A partir de datos climatologicos recolectados en siete estaciones meteorologicas automaticas se realiza un diagnostico comparativo por la aplicacion de dos metodologias, como son la de los Grados-dia y la simulacion termica transitoria de TRNSYS para determinar la demanda energetica en viviendas tradicionales de interes social ubicadas en diferentes regiones del Estado. En la metodologia de los grados-dia se utiliza la temperatura ambiental para dos temporadas del ano (lluvias y secas) y se evalua la demanda energetica del Estado de Morelos para el confort. Para la simulacion termica con el TRNSYS se utiliza la informacion climatica obtenida en promedios mensuales para determinar las cargas termicas de la vivienda y los

  9. Collection methodology evaluation and solvents analysis/mixtures solvents in the air in work ambient: methanol in MEG mixture (methanol 33%, ethanol 60% and gasoline 7%); Avaliacao de metodologia de coleta e analise de solventes/misturas de solventes no ar em ambiente de trabalho: metanol em mistura MEG (metanol 33%, etanol 60% e gasolina 7%)

    Energy Technology Data Exchange (ETDEWEB)

    Cardoso, Luiza Maria Nunes

    1995-07-01

    This thesis presents a proposal for evaluation of collection and solvent/solvent mixtures analysis methodology for the air in the work environment by studying the following issues of present solvents: historical aspects; methanol - properties and toxicity; collection methodology evaluation, and gases and vapors analysis in the air; experimental data. The denominated mixture MEG - methanol, ethanol and gasoline is analyzed in terms of its chemical characteristics. The author concludes the work detaching that the methodology presented can only be used for short duration measurements in concentrations peaks studies.

  10. Resonance analysis of the transformers winding owing of system transients; Analise de ressonancia de parte de enrolamentos de transformadores devido a transitorio no sistema

    Energy Technology Data Exchange (ETDEWEB)

    Alves, M F; Ribeiro, E E [MF Consultoria Ltda (Brazil); Aguiar Campos, W de [Companhia Energetica de Minas Gerais (CEMIG), Belo Horizonte, MG (Brazil)

    1992-12-31

    An analysis of the damage on power transformer winding during occurrence of electrical transients in substations, its causes and an analysis of its occurrence situations are presented. Results of studies in the substation Ouro Preto 2, made by CEMIG (Companhia Energetica de Minas Gerais) aiming an analysis of the possibility to occur damage in transformers winding are also reported 6 refs., 8 figs., 1 tab.

  11. Accident analysis in the water loop of the nuclear engineering department of IPEN using the RELAP4 code

    International Nuclear Information System (INIS)

    Fernandes Filho, T.L.

    1980-06-01

    A thermal-hydraulic analysis to describe the transient behavior in the water loop of the Nuclear Engineering Department of the Instituto de Pesquisas Energeticas e Nucleares, Sao Paulo, Brazil, was performed. Postulated accidents such as those resulting from (1) loss of coolant, (2) main pump failure and (3) power excursions, were studied. The computer code RELAP4/Mod.3 was employed as the principal tool of analysis. (Author) [pt

  12. Analysis of the perception of risk of radiotherapy services in the metropolitan region of Rio de Janeiro using the risk evaluation system in radiotherapy (SEVRRA / FORUM); Analise da percepcao de risco de servicos de radioterapia da regiao metropolitana do Rio de Janeiro usando o sistema de avaliacao de risco em radioterapia (SEVRRA/FORO)

    Energy Technology Data Exchange (ETDEWEB)

    Burgos, Adam de Freitas

    2015-07-01

    In this work it was possible to analyze the perception of risks associated with existing processes in the high-dose rate brachytherapy and teletherapy using linear accelerators of radiotherapy services in the metropolitan area of Rio de Janeiro, through the combined use of two proposed methods: FMECA and risk matrix, using a general analysis and other more specific ones. The database software (SEVRRA) was used to identify possible existing processes in radiotherapy services (brachytherapy and teletherapy) and to classify the sequence of events in risk levels. The risk levels were analyzed at each stage and sub-stage, present in the treatment of patients undergoing high dose rate gynecological intracavitary brachytherapy and teletherapy treatments with the use of linear accelerators applying electron or photon beams in order to establish recommendations to the risks of highest priority for each case. The results show that although the procedure of high dose rate brachytherapy be automated and less susceptible to errors or failures, daily, one can still find considerable amounts of processes with worrying levels of risk perception. The processes that are more subject to radiological accident risks was associated with procedures, for of which the majority of the failures record and planning step of the treatment. The controls analyzed showed low efficiency, warning of the need to seek and implement new more efficient controls in routine brachytherapy for each participant service. About teletherapy procedure it was found that most of the failures were related to the registration and planning of treatment and equipment stages. The controls analyzed to teletherapy showed a poor result with a first type of analysis performed by suggesting a new type of more appropriate analysis. With a second type of analysis, these controls could be better analyzed and showed an order of importance according to a percentage of efficiency. Controls such as 'Double-check', &apos

  13. Energy analysis of tubular digesters using swine residues; Analise energetica de biodigestores tubulares usando dejetos de suinos

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Alessandro Torres; Daga, Jacir [Universidade Estadual do Oeste do Parana (UNIOESTE), Marechal Candido Rondon, PR (Brazil). Grupo de Pesquisas em Ambiencia do Oeste do Parana; Campos, Aloisio Torres de [EMBRAPA Gado de Leite, Juiz de Fora, MG (Brazil). Grupo Pesquisador em Educacao Ambiental; Santos, Elenara Pinto dos; Casimiro, Evandro Luiz Nogarolli; Nagae, Ricardo Yuiti; Weiss Filho, Waldemiro [Universidade Estadual do Oeste do Parana (UNIOESTE), Marechal Candido Rondon, PR (Brazil). Centro de Ciecias Agraras

    2004-07-01

    Overcoming another financial crisis, the swine production has the great challenge, in this and next decades, of also reaching the sustainability in the ecosystem ambit. The Parana State/Brazil west area is known because of it's residues high production, with high pollution level, it possesses the added difficulty of presenting high concentration of animals, inserted in production centers in reduced areas. However, this situation reversion, changing the 'trouble called residue' in a 'energy source solution', by means of digesters, became a reality, with the initiative of some producers and researchers. Present work objective was to evaluate the energy production, by means of the digesters use, as alternative energy co-generation. The work was developed at a commercial farm located at the Parana State west area, with 1,700 sows, in an piglet unit producing, with production of 3,400 piglet per mouth. The studied system is constituted by two parallel digesters, with continuous flow and total capacity of 1,275 m3 per digester, with 30 days of hydraulic retention time. The generated biogas feeds a 4.1 cc engine, with six cylinders, 80 cv, 3,600 rpm, coupled to an generator, that constitutes an 50 kW electric engine. The system promoted a 58% reduction of chemical demand of oxygen. The daily gas production estimated was 208 m3, with production of electric energy of 35.2 kWh per day. For most of the year, the system has the potential of provisioning the farm of electricity for all its needs, promoting economy that is transformed into income for the activity. (author)

  14. Energy analysis of tubular digesters using swine residues; Analise energetica de biodigestores tubulares usando dejetos de suinos

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Alessandro Torres; Daga, Jacir [Universidade Estadual do Oeste do Parana (UNIOESTE), Marechal Candido Rondon, PR (Brazil). Grupo de Pesquisas em Ambiencia do Oeste do Parana], e-mail: atcampos3@yahoo.com.br; Campos, Aloisio Torres de [EMBRAPA Gado de Leite, Juiz de Fora, MG (Brazil). Grupo Pesquisador em Educacao Ambiental; Santos, Elenara Pinto dos; Casimiro, Evandro Luiz Nogarolli; Nagae, Ricardo Yuiti; Weiss Filho, Waldemiro [Universidade Estadual do Oeste do Parana (UNIOESTE), Marechal Candido Rondon, PR (Brazil). Centro de Ciecias Agraras

    2004-07-01

    Overcoming another financial crisis, the swine production has the great challenge, in this and next decades, of also reaching the sustainability in the ecosystem ambit. The Parana State/Brazil west area is known because of it's residues high production, with high pollution level, it possesses the added difficulty of presenting high concentration of animals, inserted in production centers in reduced areas. However, this situation reversion, changing the 'trouble called residue' in a 'energy source solution', by means of digesters, became a reality, with the initiative of some producers and researchers. Present work objective was to evaluate the energy production, by means of the digesters use, as alternative energy co-generation. The work was developed at a commercial farm located at the Parana State west area, with 1,700 sows, in an piglet unit producing, with production of 3,400 piglet per mouth. The studied system is constituted by two parallel digesters, with continuous flow and total capacity of 1,275 m3 per digester, with 30 days of hydraulic retention time. The generated biogas feeds a 4.1 cc engine, with six cylinders, 80 cv, 3,600 rpm, coupled to an generator, that constitutes an 50 kW electric engine. The system promoted a 58% reduction of chemical demand of oxygen. The daily gas production estimated was 208 m3, with production of electric energy of 35.2 kWh per day. For most of the year, the system has the potential of provisioning the farm of electricity for all its needs, promoting economy that is transformed into income for the activity. (author)

  15. Evaluation of essential trace elements in preterm and full term milk and childhood formulas by neutron activation analysis; Avaliacao dos teores de elementos essenciais no leite materno de maes de recem-nascidos prematuros e a termo e em formulas infantis por meio da analise por ativacao com neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Paola de Souza

    2009-07-01

    Many studies have emphasized the need of trace elements during infancy and their adequate availability in human milk. Deficiency of minor and trace elements can lead to various disorders in infants. During early childhood trace element requirements, are more critical due to faster growth rates. In this study, Ca, Cl, Fe, K, Mg, Mn, Na, Se and Zn were determined in human colostrum samples from mothers of preterm and full-term newborns. Samples were collected by manual expression from the first to the fifth day after birth. After collection, human colostrum samples were frozen and freeze-dried for analyses. Few of the most commonly commercialized were also analyzed. The essential element concentrations were determined in 30 colostrum samples and 17 milk formula brands by Instrumental Neutron Activation Analysis. Multivariate analyses were applied and the results were separated in two clusters. However the separation was not related to the corresponding gestational age. Results of this study showed that the concentration levels of the essential element Ca, K and Na in the milk formula samples analyzed were in agreement with the printed information on the labels. All concentration levels were also within ANVISA and Codex Allimentarius recommended values and thus adequate for infant nutritional needs. (author)

  16. Proceedings of the 7 Annual conference of the Mexican association for the energy economy. The energy sector in Mexico: challenges and solutions. [Selected papers]; 7. Conferencia anual de la asociacion mexicana para la economia energetica. El sector energia en Mexico: retos y soluciones

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    The Mexican Association for the Energy Economy (AMEE) had its VII annual conference, The energy sector in Mexico: challenges and solutions, in October, 2004. Some of the expounded topics are: technical and environmental aspects of the combined cycle power stations; analysis of the generation of electric power across biogas from sanitary landfills in Mexico; cogeneration in large power plants; methodologies for the calculation of relative efficiency: description and application of natural gas distributors in Latin American and others. [Spanish] La Asociacion Mexicana para la Economia Energetica A. C. (AMEE), llevo acabo su VII conferencia anual El sector energia en Mexico: retos y soluciones, en octubre del 2004. Algunos de los temas tratados son: Aspectos tecnicos y medioambientales de las centrales de ciclo combinado con gasificacion integrada; Analisis de la generacion de energia electrica a traves de biogas procedente de rellenos sanitarios en Mexico; Cogeneracion en grandes centrales de proceso; Metodologias para el calculo de eficiencia relativa: descripcion y aplicacion para distribuidores de gas natural en Latinoamerica y otros.

  17. Effects of 960 nm diode laser irradiation on dental enamel in vitro: temperature and morphological analysis and evaluation of enamel demineralization; Estudo in vitro dos efeitos promovidos pelo laser de diodo em 960 nm no esmalte dental humano: analise de temperatura, analise morfologica e avaliacao da resistencia a desmineralizacao

    Energy Technology Data Exchange (ETDEWEB)

    Kato, Ilka Tiemy

    2004-07-01

    The aim of this study is to determine the effects of diode laser irradiation on enamel demineralization. To achieve this goal appropriate photon absorbing substances for the laser radiation, safe laser parameters and adequate temperature measuring apparatus had to be determined. Next, the effects of diode laser and acidulated phosphate fluoride on enamel demineralization by calcium content analysis were evaluated with inductively coupled plasma atomic emission spectrometry (ICP-AES). In the first part of the study, five dyes consisting of vegetable coal diluted in five different liquids were analyzed and vegetable coal diluted in physiological solution was chosen for use as absorber. Methodologies to measure pulp chamber temperature were evaluated and modeling clay was chosen as fixture for the enamel samples held at body temperature. In the second part of the study, different energy density parameters (1.8 J/cm{sup 2}, 3.7 J/cm{sup 2}, 5.6 J/cm{sup 2}, 7.4 J/cm{sup 2} and 9.3 J/cm{sup 2}) exposure times (10, 15, 20, 25 e 30 seconds) and time intervals between dye application and laser irradiation (5, 30, 60, 90 e 120 seconds) were evaluated with respect to temperature changes in the pulp chamber. The enamel morphology was analyzed by scanning electron microscopy. Acid resistance was measured using seventy five enamel specimens, divided in five groups (control, fluoride, laser, laser + fluoride and fluoride + laser). The amount of calcium lost during demineralization in lactic acid was measured by ICP-AES. The results obtained in this experiment permit the conclusion that diode laser irradiation did not increase acid resistance. When associated with fluoride, the acid resistance did not differ from the results obtained with fluoride alone. (author)

  18. Evaluation of biological analysis program for iodine 131; Avaliacao do programa de bioanalise para Iodo-131

    Energy Technology Data Exchange (ETDEWEB)

    Gaburo, J.C.; Todo, A.S.; Potiens Junior, A.; Oliveira, E.M.; Sordi, G.M.A.A. [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)

    1997-12-31

    A program for the occupational control of internal contamination for the Radioisotopes Division workers of the IPEN-CNEN/SP has been performed by in vitro and in vivo bioassay techniques, every two weeks. From the assessment of the monitoring program, two groups of workers were identified in accordance with their activities and handling frequency {sup 131} I. The groups A and B are exposed five and three days respectively every week. In this program, urinalysis methods, thyroid and whole body measurements have been evaluated over the year. The sampling scheme, performed every two week, was altered for weekly, in order to minimize the interpretation errors and to get a better estimative of the intake. This study also provides and evaluation of the cost for the weekly urinalysis sampling method. (author) 6 refs., 1 fig.; e-mail: janetegc at net.ipen.br

  19. Implementation of a computational system at the Center for Nuclear Technology Development, for systematization the application of the FMEA - Failure Mode and Effects Analysis, for identification of dangerous and developed risks evaluation; Implementacao de um sistema computacional no Centro de Desenvolvimento da Tecnologia Nuclear para sistemarizar a aplicacao da tecnica FMEA - Failure Mode and Effects Analysis - na identificacao de perigos e avaliacao de riscos desenvolvida

    Energy Technology Data Exchange (ETDEWEB)

    Correa, Danyel Pontelo; Vasconcelos, Vanderley de, E-mail: dpc@cdtn.b, E-mail: vasconv@cdtn.b [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2009-07-01

    The regulatory bodies request risks evaluations for nuclear and radioactive licensing purposes. In Brazil those evaluations are contained by the safety analysis reports requested by the Brazilian Nuclear Energy Commission (CNEN), and risk analysis studies requested by the environment organisms. A risk evaluation includes the identification of the risks and the accident sequence which can occur, and the estimation of the frequency and his undesirable effects on the industrial installations, the public, and the environment. The identification and the risk analysis are particularly important for the implementation of a health, environment and safety integrated management according to the regulation instruments ISO 14001, BS 8800 and OHSAS 18001. The utilization of the risk identification techniques and the risk analysis is performed at the non nuclear industry, in a non standard form by the various sectors of an enterprise, diminishing the effectiveness of the recommended actions based on risk indexes. However, for the nuclear licensing, the CNEN request through their regulatory instruments and standard formats, that the risks, the failure mechanisms and detection be identified, which can allow the preventive and mitigate actions. This paper proposes the utilization of the FMEA (Failure Mode and Effects Analysis) technique in the licensing process. It was implemented a software through the Excel program, using the Visual Basic for Applications program which allows the automation and the standardization of FMEA studies as well

  20. Cancellation of the energy efficiency program in Peru because of the electrical sector privatization; Cancelacion del programa de eficiencia energetica en Peru por la privatizacion del sector electrico

    Energy Technology Data Exchange (ETDEWEB)

    Tomecich Cordova, Anibal [Centro de Conservacion de Energia y del Ambiente (CENERGIA) (Peru)

    2005-04-15

    The evolution of the activities related to the electric efficiency before and after the reforms of the electrical sector in Peru derived from the liberation of the economy is explained. In the first part it is explained as an antecedent the development of one of the most successful campaigns regarding demand management, considering it as a variable and not as a datum of the problem for statistic effects. The results of such campaign demonstrated that a proper management of the variable electricity demand, capital investments can be deferred in the electric infrastructure within the frame of sustainable social development. Afterwards it is explained the new regulatory frame and the principles that prevail for the fixation of the tariffs when the electrical sector evolves from a vertical structure to a horizontal structure. Finally it is mentioned the activities that have been carried out in a latter period to the implantation of the reforms in the sector and some important examples such as the obligation for the electric utilities to reduce their technical and commercial losses. [Spanish] Se explica la evolucion de las actividades relacionadas a la eficiencia energetica antes y despues de las reformas del sector electrico en Peru, derivada de la liberacion de la economia. En la primera parte se explica como antecedente el desarrollo de una de las campanas mas exitosas en el manejo de la demanda, considerandola como una variable y no como un dato del problema para efectos estadisticos. Los resultados de tal campana demostraron que manejando adecuadamente la variable demanda de electricidad, se puede diferir inversiones de capital en la infraestructura electrica dentro del marco de un desarrollo social sostenible. A continuacion se explica el nuevo marco regulatorio y los principios que rigen para la fijacion de las tarifas cuando el sector electrico se transforma de una estructura vertical a una estructura horizontal. Finalmente, se menciona las actividades que se

  1. Technical evaluation of the reduction of energy consumption and electrical demand of active power on the campus of UFMT (Universidade Federal de Mato Grosso) after implantation of the energy efficiency project; Avaliacao tecnica da reducao do consumo de energia eletrica e demanda de potencia ativa no campus da UFMT apos implantacao do projeto de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Gomes, Teresa Irene Ribeiro de Carvalho Malheiro; Vasconcelos, Arnulfo Barroso de [Universidade Federal de Mato Grosso (NIEPE/UFMT), Cuiaba, MT (Brazil). Nucleo Interdisciplinar de Estudos de Planejamento Energetico; Ochiuto, Milton de Souza; Bernardes, Thiago Alves [Centrais Eletricas Matogrossenses (CEMAT), Cuiaba, MT (Brazil); Barros, Regiane Silva de [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil)

    2008-07-01

    Since the energy crisis of 2001, measures that promote rational use of energy have been adopted by the Brazilian population. Either by industries that developed more efficient equipment, or by consumers, inclined in acquiring these equipment and adopting rational energy use measures, or by the government, that established a series of measures stimulating the energy efficiency. This work will go to illustrate some of these measures, as the implantation of STAMP PROCEL, that aims to indicate to the consumer which equipment achieve greater efficiency in each category. And law number 9,991, of July 24 2000, that regulates research and development investments in energy efficiency by electric sector companies. Finally, the result of the implantation of a energy efficiency project in a public agency will be shown, illustrating the impacts that the development of these projects bring to society as a whole. (author)

  2. Assessing scenarios of the brazilian energy matrix in the long-term plan of Ministry of Mines and Energy: impacts in the oil and gas industry; Avaliacao de cenarios de matriz energetica nacional no plano de longo prazo do Ministerio de Minas e Energia: impactos na industria de oleo e gas

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Giovani; Szklo, Alexandre; Schaeffer, Roberto [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Programa de Planejamento Energetico

    2004-07-01

    The Law no. 9,478/97 establishes that among its attributions the Energy Policy National Council (CNPE) must review periodically the national energy matrix. This paper aims at discussing the scenarios considered in the current revision based on an integrated energy planning approach, identifying its key points and analyzing its eventual consequences, particularly for oil and gas industry. More precisely, it evaluates the effects over the O and G industry of changes in the international and national circumstances. The international key factors focused are, mainly, oil and oil product prices and productive and technological strategies of O and G companies. The national key factors discussed fuel prices, inter-fuel substitution potentials, efficiency levels, potentials of new discovers and characteristics of Brazilian reserves of oil and natural gas (on-shore or off-shore E and P, oil or gas fields, API degree density, sulfur and acid contents), and adequate energy infra-structure (necessity of distribution and transportation grid expansion, refining capacity etc.). Such discussions have important implications for public policies and corporate strategies. (author)

  3. Energy matrix of Sao Paulo state from 2006 to 2016; Matriz energetica do Estado de Sao Paulo 2006 a 2016

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This report presents the economic and social energy scenarios in the state of Sao Paulo, Brazil; the analysis and projection of the energy consumption in the state concerning to industrial, residential, farming and cattle-raising, transportation, commercial, energy and public sectors. Analysis of the energy production in the state of Sao Paulo, Brazil, the production projection, the supply and consumption balance of energy is also presented.

  4. Monitoring of standalone photovoltaic systems applied to rural electrification areas; Avaliacao de desempenho e identificacao de falhas em sistemas fotovoltaicos isolados aplicados a eletrificacao rural

    Energy Technology Data Exchange (ETDEWEB)

    Machado-Neto, L. V. B.; Cabral, C. V. T.; Oliveira-Filho, D.; Diniz, A. s. A. C.

    2004-07-01

    The sustainability of standalone photovoltaic systems passes through an accompaniment of the systems installed in the field. To subsidize this accompaniment it had been developed procedures for monitoring a similar system in laboratory. The standalone photovoltaic system monitored is similar to the systems installed by Companhia Energetica de Minas Gerais - CEMIG in the schools of isolated communities, inside the Solar Light Program. The system was simulated and the aims were to optimize the project and carry out a comparative study with the monitored results. The assembly procedure of the facility consisted of the implantation of the sensors, installation of acquisition boards and development of the monitoring program. The results presented here will allow the development of a program of preventive maintenance of the systems installed by CEMIG. (Author)

  5. Energetic potential of coffee residues to coffee industry; Potencialidade energetica da borra de cafe para as industrias de cafe soluvel

    Energy Technology Data Exchange (ETDEWEB)

    Nogueira, L.A.H.; Flores, L.F.V. [Escola Federal de Engenharia de Itajuba, MG (Brazil)

    1987-12-31

    This work aims to discuss the energetic viability of coffee residues as for steam generators and furnaces. The capacity of co-generation is presented. Economic analysis are also performed concerning the partial substitution of conventional fuel by residue. It was concluded that the above mentioned substitution is economically viable. 6 refs., 3 figs., 1 tab.

  6. Georeferenced energy information system integrated of energetic matrix of Sao Paulo state from 2005 to 2035; Sistema de informacoes energeticas georreferenciadas integrado a matriz energetica do estado de Sao Paulo: 2005-2035

    Energy Technology Data Exchange (ETDEWEB)

    Alvares, Joao Malta [IX Consultoria e Representacoes Ltda, Itajuba, MG (Brazil); Universidade Federal de Itajuba (UNIFEI), MG (Brazil)

    2010-07-01

    A georeferenced information system energy or simply SIEG, is designed to integrate into the energy matrix of Sao Paulo from 2005 to 2035. Being an innovative request made by the Department of Sanitation and Energy of the state, this system would have the purpose to collect and aggregate information and data from several themes, relating this content in a geographic location spatialized. The main focus of the system is the analysis of the energy sector as a whole, from generation to final consumption, through all phases such as transmission and distribution. The energy data would also be crossed with various themes of support, contributing to the development of numerous reviews and generating sound conclusions. Issues such as environment, socio-economics, infrastructure, interconnected sectors, geographical conditions and other information could be entered, viewed and linked to the system. The SIEG is also a facilitator for planning and managing the energy sector with forecast models in possible future situations. (author)

  7. The institutional foundations of energetic integration at the South America; Os fundamentos institucionais na integracao energetica da America do Sul

    Energy Technology Data Exchange (ETDEWEB)

    Suarez, Lizett Paola Lopez; Guerra, Sinclair Mallet-Guy [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Mecanica. Dept. de Energia]. E-mails: lizlosu@fem.unicamp.br, sguerra@fem.unicamp.br; Udaeta, Miguel Edgar Morales [Universidade de Sao Paulo (USP), SP (Brazil). Inst. de Eletrotecnica e Energia (IEE)]. E-mail: udaeta@pea.usp.br

    2006-07-01

    From the revision and analysis of the energy integration process in South America, the present article goals to show which are the institutional basis that endorse the process, once these entities act directly with questions related to the energy sector or to the wider economic integration where the energy integration is inserted. Thus, the Regional entities, that can be associations, organizations and commissions, like ALADI, ARPEL, CEPAL, CIER, OLADE and others are mentioned and analyzed. The analysis points out that these entities constitute the institutional basis for support the decision making of the region countries, considering the achieved studies, the promoted debates, the establishment of norms and information treatment. Finally, it is emphasized that these entities can not and should not have decide and execute, since are the governments (politic will) the responsible for the planning and coordination role for having the integration project effectively implemented. (author)

  8. Geothermal resources of low enthalpy as an energy alternative; Recursos geotermicos de baixa entalpia como alternativa energetica

    Energy Technology Data Exchange (ETDEWEB)

    Mattos, Marieta C [Ministerio das Minas e Energia, Sao Paulo, SP (Brazil); Frangipani, Alcides; Furumoto, Shintaro [Instituto de Pesquisas Tecnologicas (IPT), Sao Paulo, SP (Brazil)

    1985-12-31

    In this work an preliminary economic analysis is carried out to show the advantage of using geothermal fluids as a substitute for heating. Specific cases for potential and immediate use of geothermal fluids as a substitute for heating oil industrial process heating. Specific cases for potential and immediate use of geothermal fluids in Brazil are analysed. These include geothermal refrigeration, agroindustrial uses, tourism and therapeutic purposes. 7 refs., 2 tabs

  9. Comparison the programs of energy efficiency for industrial electric motors; Comparacao de programas de eficiencia energetica para motores eletricos industriais

    Energy Technology Data Exchange (ETDEWEB)

    Mariotoni, Carlos Alberto; Naturesa, Jim Silva; Santos Junior, Joubert Rodrigues dos; Demanboro, Antonio Carlos [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Faculdade de Engenharia Civil, Arquitetura e Urbanismo. Nucleo Interdisciplinar de Planejamento Energetico (NIPE)]. E-mail: cam@fec.unicamp.br; jimnaturesa@yahoo.com; joubert@fec.unicamp.br; anto1810@fec.unicamp.br

    2006-07-01

    This paper aims to present a comparison among the existing programs of energy efficiency for industrial electric motors in Brazil, in the United States of America and in the European Community. The analysis is restricted to the action of each program, considering that the mentioned countries present distinct economical, political and social characteristics. Therefore, it is intended to discuss the main barriers existing in the Brazilian industrial context which cause difficulties to develop a program of electric motors efficiency and to indicate some ways to overcome those barriers. (author)

  10. Energetic efficiency in schools. Case study from Itabira; Eficiencia energetica em escolas. Estudo de caso de Itabira

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Anadia Patricia Almeida de [Prefeitura Municipal de Itabira, MG (Brazil)]. E-mail: anadiaalmeida@gmail.com

    2006-07-01

    This work approaches the use of energy in public buildings in the sector of Schools in Itabira, Minas Gerais, under the approach of the energy efficiency. It is known that the Brazilian public buildings consumes 80% of all electric energy spend in the public sector. Thus, the public building present important consumptions and great potentials of save energy. An analysis of the public schools of Itabira (municipal and state) with relation to the energy consumption is presented, with the objective to trace an energy profile of the category of Public Schools and to identify energy performance indices (specific consumption) more representative for the sector. In the case of schools, it can be used some amounts as reference for the calculation of specific consumption, to know: worked area, days, number of students, number of turns, number of rooms and number of classrooms, beyond the area. Each one of these amounts of reference supplies a differentiated vision of the energy use. The use of more than an index of energy performance is common so that the information can be extracted. To carry through this study, the consumption of all the year of 2004, the number of period of learning days, the number of students, groups, turn and classrooms was considered. The work presents an analysis of the specific consumptions for each type of considered amount, each type of net (municipal and state) and for an only net (public). The characteristics that justify the differentiated use of the energy, as well as the properties of the used indices are argued to classify them. (author)

  11. The future of the coal on the energetic Spanish policy; El futuro del carbon en la politica energetica espanola

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    This work was born as a result of the decision of the Foundation for Studies on energy, to undertake and analysis on the role of coal in the X XI century, because although coal appears as the fuel to be most affected by the provisions of the fight against global warming, it must be recognized its essential contribution in ensuring the power supply and to contain the cost of the kWh. The study was prepared by a group of professionals of the energy sector, without direct commercial links with the subject discussed, but with acknowledges expertise technique. It is pertinent to stress that the purpose of this study is to provide data and analyze rigorously technical options with a view to be able to use the coal energy, minimizing and, theoretically, eliminating the CO{sub 2} emissions. It is therefore not a document produced from predetermined positions, but it is deducted from the characteristics of the nature and mechanisms and other processes involved in generating electricity from coal, and in the treatment of generated CO{sub 2} for it not to reach the atmosphere. We intend to contribute to the better understanding by our society, a major problem for our economy and out welfare. (Author)

  12. Economic aspects for South America energy integration; Aspectos economicos para a integracao energetica da America do Sul

    Energy Technology Data Exchange (ETDEWEB)

    Vela, Jorge Alberto Alcala; Cardozo, Fernando Simoes [ELETROBRAS, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Expansion of the internal market and external, production on a large scale and more dynamic economic growth would be the consequences of a regional integration in South America. However, due to the specific characteristics of South America this process did not occur. Many attempts were made through the years with the creation of institutions that tried to promote the integration of different forms of South America. This article analyses the current economic conditions in which this initiative is to achieve an energy integration, which seems feasible given the provision expresses the presidents of South American countries before a possible rationing of energy. Through analysis of the results it may be concluded that there is a growing demand for energy in all countries, which should be resolved first in order not to cut the development of South America. The main economic aspects which affect the process of integrating energy are the commercial structures of energy, the energy complementarities, the degree of development of infrastructure for interconnection, the industrial structure and conformation electric business. However, an immediate solution would be to boost bilateral integration energy projects and construction of transmission lines that interconnect the regional stations for the supply of electric energy. Moreover, as the conditions are not improved political and economic and there is no compatible models between technical institutions and legal and administrative, will not be achieved significant progress in the process of regional energy integration of South America. (author)

  13. Energy efficiency in a drive system of induction motors; Eficiencia energetica em um sistema de acionamento de motores de inducao

    Energy Technology Data Exchange (ETDEWEB)

    Vasconcellos, Arnulfo Barroso de; Kawaphara, Mario Kiyoshi; Apolonio, Roberto; Annunciacao, Luiz de; Silva, Thiago Vieira da; Sao Jose, Bernardo Dias [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil)

    2010-07-01

    Industrial consumers are interested in reducing their monthly expenditure on electricity. Tackling the waste of electrical energy means improving the way you use it, without giving up the comfort and the advantages it provides. Means to reduce consumption, but without compromising safety, quality of product or process or production capacity. In this context, this study presents the results obtained by measurements in a drive system for elevator type pitchers in the laboratory by conventional means and by electronic devices, which simulates a system of operation of a grain transportation industry. We monitored voltages, currents, active power, active power consumption of the system triggered by the conventional method by starting directly and, through microprocessor controls with frequency converter and analyzed the power efficiency obtained with the two processes drive. This study aims at a possible reduction in electricity consumption for active power and active power demand for the automated activation with the frequency inverter. In a broader analysis, conservation of power ends up benefiting society in general, because its effects are felt in different ways. Encourage the reduction or even elimination of new investment to build power plants and power grids, reduce prices of products and services, and ensure availability of electricity supply and service to new consumers. (author)

  14. Energetic efficiency of agroecosystems as an indicator of sustainability; Eficiencia energetica de agroecossistemas como indicador de sustentabilidade

    Energy Technology Data Exchange (ETDEWEB)

    Bueno, Osmar de Carvalho [Universidade Estadual Paulista Julio de Mesquita Filho (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas; Colen, Fernando [Universidade Federal de Minas Gerais (ICA/UFMG), Montes Claros, MG (Brazil). Inst. de Ciencias Agrarias; Campos, Alessandro Torres [Universidade Federal de Lavras (DEG/UFLA), MG (Brazil). Dept. de Engenharia

    2010-07-01

    The dependence of modern agriculture in relation to non-renewable energy sources became more pronounced over time. The intensive use of non-renewable energy in agroecosystems, especially fossil fuels, increased the physical output of food and raw materials, reducing the painfulness of work and the improvement of income in the sector. However, complex problems brought individually or in jail, which transformed human life in terms of ecological, social and economic development. It should build indexes in order to relate the inputs and outputs of energy in ecosystems. A breakthrough in the relationship between sustainability and energy analysis of farms is the use of energy efficiency index, the relationship between outputs and inputs of non-renewable energy in agroecosystems. This paper aims to present the energy efficiency of different agroecosystems. The results demonstrate the dependence of agroecosystems in relation to fossil energy sources. It was concluded that it is necessary to make efficient use of exhaustible natural resources, particularly fossil fuels. (author)

  15. Work- influence of the renewable energy sources in the environment, their use in Cuba; Trabajo- Influencia de las fuentes energeticas renovables en el medio ambiente, su aplicacion en Cuba

    Energy Technology Data Exchange (ETDEWEB)

    Mendez Gonzalez, Mercedes; Sarmiento Sera, Antonio [Instituto Superior Politecnico Jose A. Echeverria (ISPJAE), Ciudad de la Habana (Cuba)

    2000-07-01

    Among the different renewable energy technologies, wind provides better possibilities in regions in which this resource is available. The advantages of wind, as well as solar energy technologies are less or none fuel costs and less environmental impacts. According to the current available technology development, the use of hybrid systems of photovoltaic and wind energy presents large opportunities to cover the energy needs of isolated areas, specially in facilities that don't have connection to the national transmission grid. This study presents the different environmental impacts that hybrid systems have (incorporing the landscape impacts as well as socioeconomical impacts) for the electricity generation in Cuba. We conclude that these systems allow an important power generation in Cuba, and that they have neglected impacts to the environment. The use hybrid systems in Cuba are particularly important in ecotourism facilities and other small industries. [Spanish] Dentro de las posibilidades energeticas y medioambientales de los distintos tipos de energias renovables; la eolica por su caracter limpio e inagotable, permite un gran desarrollo en aquellas areas que cuentan con el potencial necesario para su aplicacion. De forma similar la energia solar presenta ventajas importantes, ambos son recursos gratuitos, no contaminantes y disponibles en muchas localidades. Segun las tecnologias actualmente disponibles, la utilizacion de sistemas hibridos de energia solar fotovoltaica y eolica presenta mayor interes hoy en dia para cubrir consumos aislados, en instalaciones alejadas de la red nacional de electrificacion. Este trabajo plantea un estudio, de la afectacion que sobre el medio ambiente, tanto en el aspecto visual como socioeconomico, tienen las fuentes energeticas renovables, y especificamente los sistemas hibridos eolico- fotovoltaicos para la generacion de electricidad en Cuba, a partir de conocer los recursos eolico y solar disponible en el lugar del

  16. Development and analysis of an index of energetic sustainability using fuzzy logic; Desenvolvimento e analise de um indice de sustentabilidade energetica utilizando logica fuzzy

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Francisco Carlos Barbosa dos

    2010-07-01

    Sustainable Development is one the most frequently addressed issues nowadays and the search for its comprehension is a major challenge for researchers. Nevertheless, to reach its understanding and the relations comprised (economic, social, environmental and institutional dimensions) is not the only challenge. To measure the route for a society development is an equally important matter, mainly due to intrinsic relations among environment, society and economy. This work presents a new approach in the construction of a synthetic index for sustainable development, under the point of view of energy sustainability. This methodology was based on mathematical archetypes structured in Fuzzy Logics, thus allowing the incorporation of new knowledge bases, even with vague definitions. The final result is the creation of an Energy Sustainability Index that may be accompanied along the time, allowing comparisons among countries, since it uses a database from the 'Guia de Indicadores Energeticos de Desenvolvimento Sustentavel' (Guide of Energy Indicators for Sustainable Development) from the IAEA. This guide presents an energy indicator methodology worldwide accepted and it was conceived to be similar to other indicators, such as the 'Indice de Desenvolvimento Humano (IDH)' (Human Development Index), developed by The United Nations Organization and which is of easy comprehension, since it is represented by a number between zero and one. (author)

  17. Brief analysis of the energy matrix in the state of Mato Grosso and the mesoregions; Analise sucinta das matrizes energeticas de Mato Grosso e suas mesorregioes

    Energy Technology Data Exchange (ETDEWEB)

    Canavarros, Otacilio Borges; Ferreira, Noel Flavio Costa; Melo, Moises Candido de; Leite, Jose Ermete Rabello [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil). Nucleo Interdisciplinar de Estudos em Planejamento]. E-mails: niepe@ufmt.br; niepe@pop.com.br

    2006-07-01

    The text presents relative energetic analyses to the Mato Grosso and its regions, with basis in presented matrices of offer and demand in the document - BEEMT 2004 - Mato Grosso Energetic Balance and Regions - period 1995 a 2003. The analyses were made leading in account two average taxes of annual growth in 1999/2003 periods 1995/2003 and, respectively, objectifying one better understanding of the evolution of the behavior of the energy ones in the State. (author)

  18. Energetic analysis of experimental process in bio diesel production from chicken oil; Analise energetica do proceso experimental de producao de biodiesel a partir de oleo de frango

    Energy Technology Data Exchange (ETDEWEB)

    Bonometo, Ricardo Pacheco [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Programa de Pos-Graduacao em Energia na Agricultura], E-mail: rpbonometo@yahoo.com.br; Justi, Andre Luiz [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Programa de Pos-Graduacao em Irrigacao e Drenagem], E-mail: aljusti@fca.unesp.br; Buchi, Alisson Teixeira [Universidade Estadual Paulista (CEVAP/UNESP), Botucatu, SP (Brazil). Centro de Estudos de Venenos e Animais Peconhentos], E-mail: atbuchi@yahoo.com.br; Saglietti, Jose Roberto [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Dept. de Fisica e Biofisica], E-mail: jroberto@ibb.unesp.br

    2010-07-01

    There is a great global concern about the depletion and the high cost of fossil fuel reserves exploitation, more than ever, it is necessary to make a profound study and take advantage of alternative sources that can be used as energy efficiency with an appropriate pricing and low environmental impact. Brazil, which has highlighted using alternative energy sources as the use of ethanol and, in recent years, has been encouraging the expansion of its energy matrix in which the biodiesel will have a strategic importance within the agrobusiness area. Biodiesel is a fuel that can replace the diesel, which is a petroleum derivative. It is an ester, produced in the transesterification reaction of vegetable oils and animal greases, in an alcohol with an additional catalyst, are converted into fatty acids and result in esters with glycerol as sub products. The objective of this study was to estimate the final energy balance for the process biodiesel production from oil chicken waste. The energy balance estimation was quantified in calorific value according to the energy expenditure by calorimetric bomb method. The relationship between input and output of energy was around 0.97. In a first evaluation, the procedures adopted should be improved enough, so the process can become energetic and economically viable. (author)

  19. Analysis of energy culture the Crambe (Crambe abyssinica Hochst) produced in no tillage; Analise energetica da cultura do Crambe (Crambe abyssinica Hochst) produzida em plantio direto

    Energy Technology Data Exchange (ETDEWEB)

    Jasper, Samir Paulo; Biaggioni, Marco Antonio Martin; Silva, Paulo Roberto Arbex; Seki, Andre Satoshi; Bueno, Osmar Carvalho de [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas], E-mail: jasper@fca.unesp.br

    2010-07-01

    The objective of this study was to characterize the energy consumption in the deployment and conduct of the culture of Crambe abyssinica Hochst in no-tillage, at the Experimental Farm Farm belonging to the Faculty of Agronomic Sciences - UNESP, located in Botucatu - SP. Assessing the sustainability of the system were estimated, energy efficiency and culture of crambe. To survey the components of the structure of expenditures, we used coefficients Energetic in specialized literature. The structures of energy expenditure by type, source and form, demonstrated that the indirect energy participated with 65.03%, industrial sources, fossil and biological accounted for 68.80%, 23.67% and 11.30%, respectively. The forms have been introduced; chemical fertilizers contributed 44.31% and diesel to 23.04% to 67.35% of energy expenditure, showing the dependence of the system of energy sources and industrial fuels. The efficiency of the culture was found to be 9.98, indicating that for each calorie used in the production of crambe return was 8.98 units, the efficiency was above 38, demonstrating the high sustainability of the agricultural system to reach energy cultural exceeding 37 thousand MJ ha{sup -1}. (author)

  20. Algorithms evaluation for transformers differential protection; Avaliacao de algoritmos para protecao diferencial de transformadores

    Energy Technology Data Exchange (ETDEWEB)

    Piovesan, Luis Sergio

    1997-07-01

    The appliance of two algorithms is evaluated, one based in Fourier analysis and other based in a rectangular transform technique over Fourier analysis, to be used in digital logical circuits (digital protection relays) for the purpose of differential protection of power transformers (ANSI 87T). The first chapter has a brief introduction about electrical protection. The second chapter discusses the general problems of transform protection, the development of digital technology and, with more detail, the differential protection associated to this technology. In this chapter are presented the particular aspects of transformers differential protection concerning sensibility, inrush current situations and harmonic distortions caused by transformer core saturations and the differential protection algorithms and their applications in a specific relay design. In chapter three, a method to make possible testing the protection performance is developed. This work applies digital simulations using EMTP to generate current signal of transformer operation and fault conditions. Digital simulation using Matlab is used to simulate the protection. The EMTP generated field signals are sent to the relay under test, furnishing data of normal operation, internal and external faults. The relay logic simulator at Matlab will work this data and so, it will be possible to verify and evaluate the algorithm behavior and performance. Chapter 4 shows the protection operation over simulations of several of transformer operation and fault conditions. The last chapter presents a conclusion about the protection performance, discussions about all the methods applied in this work and suggestions for further studies. (author)

  1. Rural electrification based on photovoltaic systems: systemic evaluation and analysis; Eletrificacao rural com sistemas fotovoltaicos: avaliacao e analise sistemicas

    Energy Technology Data Exchange (ETDEWEB)

    Orellana Lafuente, Renan Jorge

    1995-07-01

    In spite of all advances made by modern technology, there are still regions which remoteness has made electrification of poor rural localities very difficult or impossible. The only practical solution for these localities is a local, decentralized form of electrical generation, such as solar energy. Based on its availability and potential, together with the scientific and technical advances made in photovoltaic conversion, solar energy is an alternative which is viable for many rural areas in developing countries. The technology has matured sufficiently, but in its application there is still a need for systematization for experiences, especially in the areas of planning and management. The present work deals with a project carried in the community of Chimboata, Chimboata department, Bolivia. The implementation aspects are analysed and the implementation methodology described. Finally, the forms of managing and funding this type of systems are analysed. (author)

  2. Study of social responsibility of the Nuclear and Energy Research Institute of Sao Paulo (IPEN/CNEN-SP); Estudo da responsabilidade social do Instituto de Pesquisas Energeticas e Nucleares de Sao Paulo (IPEN/CNEN-SP)

    Energy Technology Data Exchange (ETDEWEB)

    Mutarelli, Rita de Cassia

    2014-07-01

    Over the years, the socio-environmental concept has grown through programs, conferences and several activities that have been held in Brazil and worldwide. Sustainability and social responsibility are now an integral part of everyday life of organizations The Instituto de Pesquisas Energeticas e Nucleares (IPEN), which is the focus of this research, is committed to the improvement of Brazilian quality of life. Based on IPEN's mission, and due to the lack of tools for assessing socio-environmental actions, this research aims to propose an assessment tool for social responsibility, which may also be a methodological resource committed to the improvement of the Institute. Through indicators and dimensions, a methodology to assess social responsibility and identify both strengths and weaknesses was designed. The methodology was administered to IPEN, and the results demonstrated positive aspects regarding actions towards the internal publics and negative aspects towards the external publics that require improvement. The results obtained were satisfactory. Nevertheless, as the subject of this study is a broad theme, further studies are suggested. IPEN's board may use the results of this research as a tool to help them identify feasible socio-environmental actions to be implemented in the institute. (author)

  3. Probabilistic evaluation of the Brazilian interconnected power systems; Avaliacao probabilistica do desempenho do sistema interligado brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Melo, A C.G.; Mello, J C.O.; Romero, S P; Oliveira, G C [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil); Fontoura Filho, R N [ELETROBRAS, Rio de Janeiro, RJ (Brazil)

    1994-12-31

    This paper describes the main features of the NH{sub 2} model, developed for the probabilistic evaluation of the adequacy of large scale power systems. The system analysis is carried out through a full set of indicators, including reliability indices and probability distributions of selected variables, such as area interchanges, power flow in circuits, voltage in buses etc. These indicators are calculated in two stages: before and after the introduction of remedial actions. Also, the model yields the representation of system hourly load curve, with uncertainty around the load levels. The flexibility and performance of the NH2 model are illustrated in case studies with a 1400-bus, configuration of the Brazilian system. (author) 12 refs., 11 figs., 6 tabs.

  4. Evaluation of operation strategies of hybrid systems; Avaliacao de estrategias de operacao de sistemas hibridos

    Energy Technology Data Exchange (ETDEWEB)

    Hauschild, Luciano; Zilles, Roberto [Universidade de Sao Paulo (USP), Sao Paulo, SP (Brazil). Inst. de Eletrotecnica e Energia. Lab. de Sistemas Fotovoltaicos]. E-mail: lucianoh@iee.usp.br

    2006-07-01

    This article evaluates the operation strategies of photovoltaic-eolic-diesel hybrid systems used for the rural area applied to two cases studies placed at the Cardoso Island, SP. The operation strategies evaluation is performed by simulation using data collected at the Cardoso Island such as electric power consumption profile and the solar and wind potential. With those data, simulation have been done considering different operation strategies and different levels of renewable energies penetration in the total energy produced by the system, in order to obtain system operation results such as Diesel oil consumption and depth of average discharge of the battery banks. From the simulation results an economic analysis have been done by using elements data from the cost of life average cycle (LAC) for determining which strategy is the most adequate for operation the electric power supply hybrid system.

  5. Avaliacao da gestao ambiental dos hoteis de selva na Amazonia, Brasil

    Directory of Open Access Journals (Sweden)

    Gomes de Moraes, Adriana

    2008-10-01

    Full Text Available In the challenge of desvelar of that it forms the hoteleiros enterprises they manage its ambient action without causing great impacts in one of biggest ecosystems of the world, the Amazonian forest, was tried to know in this research the forms of ambient management of the located hotels of forest in the legal Amazônia. The norteadora question of the research was to know that type of ambient management is made by the hotels of selva?Foi used as instrument of collection of data the questionnaire, that if subdividiui in four great subjects to be searched. The first one was relative questions to the planning of the place, according to to the profile of the customer, third to the room and the relative questions architecture the building subject relative questions to the energy resources and infrastructure of the public services. As result of this analysis was concluded that two of three hotels searched are practising management ambient of form less impactante, since type of construction adopted until services offered to guests, or either shows objective that its hotel is coadjuvante for customer that visits this type of place, that stops it does not import luxury, comfort and amenities, more yes contact with the fauna and flora and way of life of the natives.

  6. Quality evaluation of blood irradiation process;Avaliacao da qualidade do processo de irradiacao de hemocomponentes

    Energy Technology Data Exchange (ETDEWEB)

    Goto, R.E.; Medeiros, R.B. [Universidade Federal de Sao Paulo (DDI/UNIFESP), SP (Brazil). Dept. de Diagnostico por Imagem. Coordenadoria de Fisica e Higiene das Radiacoes

    2009-07-01

    An adverse reaction in blood transfusion is the graft versus host disease (GVHD). This disease affects immunodeficient or immunosuppressed patients where transfused T cells proliferate and initiate a host's immune system reaction. Blood gamma irradiation is the most efficient way to inhibit lymphocyte T blastic transformation and mitotic activity and it is the most effective method to combat this disorder. However, there is no fast and effective system to analyze the dose distribution in the irradiation process and guarantee that the absorbed doses are in agreement with FDA recommendations. This study aims to establish a periodic quality control of the gammacell irradiators using radiochromic films properly calibrated. The quality control is simply and effective to combat GVHD as well as is useful to detect mechanical fails at rotation set system through the dose uniformity analysis. It was possible to verify the uniformity ranged from -72.38% to 106.33% and some blood bag received doses not compatible with recommended international threshold. (author)

  7. Evaluation of occupational exposure in intraoral radiography; Avaliacao da dose ocupacional em radiografia intraoral

    Energy Technology Data Exchange (ETDEWEB)

    Miguel, Cristiano; Barros, Frieda S.; Rocha, Anna S.P.S.; Godoi, Walmor C., E-mail: miguel_cristianoch@yahoo.com.br, E-mail: saicla@utfpr.edu.br, E-mail: annarocha@yahoo.com, E-mail: walmor.godoi@gmail.com [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil); Tilly Junior, Joao G., E-mail: joao.tilly@derax.com.br [Universidade Federal do Parana (HC/UFPR), Curitiba, PR (Brazil). Hospital das Clinicas

    2014-07-01

    The intraoral radiography is widely performed in the dental office due to low cost and agility. The doses in intraoral radiology are considered low, however it is known that doses below the threshold for deterministic radiation has the potential to induce stochastic effects. An intraoral radiography has a risk of inducing fatal cancer or serious in order of 1:10,000,000. Besides the patient, the dentist may also be being exposed to radiation during the work with the radiographics practices. The bibliographies demonstrates the lack of information on radiation protection of dentists, however, the occupational dose reduction was observed in radiology over the past 14 years. This work aims to evaluate the effective dose of radiation to which workers can be exposed dentists in dental offices to perform intraoral radiographs. In this context, a study was be conducted between June 2013 and May 2014 with 44 professionals in Curitiba city. For each dentist was given a personal dosimeter to be used for 30 days. During this period, the number of radiographies and the length of the cable triggers of the X-ray equipment was registered and, the dosimeter´s dose was read. It was observed that the cables triggers meet regulatory standards and allow dentists to get the mean minimum distance of two meters from the radiation source in 93% of cases. Through analysis of the doses, it was concluded that occupational exposures of these workers are within the recommended threshold by regulatory 453/1998 of the Ministry of Health from Brazil. (author)

  8. Lows income residential tariff - An analysis of the application under the cross subsidies viewpoint; A tarifa residencial de baixa renda: uma analise de sua aplicacao perante a questao de subsidios cruzados

    Energy Technology Data Exchange (ETDEWEB)

    Prado Junior, Fernando Amaral de Almeida [Secretaria de Estado de Energia, Sao Paulo, SP (Brazil)

    1998-12-31

    The paper evaluates the impacts of a new policy in electricity pricing applied to residential customers with low income, specially in the view point of crossed subsides. This paper shows some inconsistencies in the new policy and relate the experience of CESP - Companhia Energetica de Sao Paulo - in it`s propose of adapting the low income to its franchise area. Also made an analysis of the policy`s homogeneity among different utilities. (author) 6 refs., 7 figs.; e-mail: fprado at sp.gov.br

  9. Energy efficiency and the use of renewable energies, how to estimate how much they mitigate the green house effect gases emissions; Eficiencia energetica y uso de energias renovables, como estimar cuanto mitigan las emisiones de gases efecto invernadoro?

    Energy Technology Data Exchange (ETDEWEB)

    Asociacion de Tecnicos y Profesionistas en Aplicacion Energetica, A.C. [Mexico (Mexico)

    2002-06-01

    In the last years much attention has been given to the polluting gas discharges, in special of those that favor the green house effect (GHE), due to the negative sequels that its concentration causes to the atmosphere, particularly as the cause of the increase in the overall temperature of the planet, which has been denominated world-wide climatic change. There are many activities that allow to lessen or to elude the GHE gas emissions, and with the main ones the so-called projects of Energy Efficiency and Renewable Energy (EE/RE) have been structured. In order to carry out a project within the frame of the MDL, it is necessary to evaluate with quality, precision and transparency, the amount of emissions of GHE gases that are reduced or suppressed thanks to their application. For that reason, in our country we tried different methodologies directed to estimate the CO{sub 2} emissions that are attenuated or eliminated by means of the application of EE/RE projects. [Spanish] En los ultimos anos se ha puesto mucha atencion a las emisiones de gases contaminantes, en especial de los que favorecen el efecto invernadero (GEI), debido a las secuelas negativas que su concentracion ocasiona a la atmosfera, particularmente como causante del aumento en la temperatura general del planeta, en lo que se ha denominado cambio climatico mundial. Existen muchas actividades que permiten aminorar o eludir las emisiones de GEI, y con las principales se han estructurado los llamados proyectos de eficiencia energetica y energia renovables (EE/ER). Para llevar a cabo un proyecto dentro del marco del MDL, es necesario evaluar con calidad, precision y transparencia, la cantidad de emisiones de GEI que se reducen o suprimen gracias a su aplicacion. Por ello, en nuestro pais ensayamos diferentes metodologias encaminadas a estimar las emisiones de CO{sub 2} que se atenuan o eliminan mediante la aplicacion de proyectos de EE/ER.

  10. The selection of the traction system based on the energy efficiency for vehicles of heavy service; La seleccion del tren motriz basada en la eficiencia energetica para vehiculos de servicio pesado

    Energy Technology Data Exchange (ETDEWEB)

    Rafael Morales, M.Y [Instituto Mexicano del Transporte, (Mexico); Cervantes de Gortari, J [Departamento de termoenergia, Facultad de ingenieria, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

    2004-01-15

    Transportation activities in Mexico, especially in heavy-duty vehicles, are affected by the low efficiency in fuel consumption. In spite of the advanced technology in energy efficiency that generally is being adopted and used in the Mexican cargo fleet, there is not a significant reduction in the operation costs of this very important economic activity. In this paper, an account about the influence that the selection of the traction system components has on the fuel consumption and the ascending capacity of the vehicle, is presented. As a result of the study, an algorithm based on real performance tests with optimal fuel economy, was developed. The program is useful for the selection of the most appropriate traction system of a given vehicle, taking into account the condition that has to fulfill for a give task. [Spanish] Entre los problemas que afectan a la economia del sector de autotransporte en Mexico, especialmente en el transporte destinado al servicio pesado, se encuentra el de baja eficiencia en el consumo de combustible. A pesar de la avanzada tecnologia que generalmente se va disponiendo y adoptando en el parque vehicular con relacion a la eficiencia energetica, el costo por toneladas transportada no ha disminuido de manera importante. En este trabajo, se presenta un estudio acerca de la influencia que tiene dentro de esta problematica la seleccion de los componentes del tren motriz en el consumo de combustible y en la capacidad de ascenso del vehiculo, en relacion con el peso de la carga transportada. Como resultado del estudio se desarrollo un algoritmo basado en las pruebas reales de desempeno a que puede someterse un vehiculo, buscando el regimen optimo de economia del combustible. El programa permite a las empresas de transporte, seleccionar el tren motriz mas adecuado para cada vehiculo teniendo en cuenta las operaciones a que debera sujetarse en un determinado servicio.

  11. Selection of the traction based on the power efficiency for vehicles of heavy service; La seleccion del tren motriz basada en la eficiencia energetica para vehiculos de servicio pesado

    Energy Technology Data Exchange (ETDEWEB)

    Morales, Rafael [Instituto Mexicano del Transporte, (Mexico); Cervantes de Gortari, J. [Facultad de Ingenieria, Universidad Nacional Autonoma de Mexico (UNAM), Mexico, D.F. (Mexico)

    2004-03-01

    Transportation activities in Mexico, especially in heavy-duty vehicles, are affected by the low efficiency in fuel consumption, in spite of the advanced technology in energy efficiency that generally is being adopted and used in the Mexican cargo fleet, there is not a significant reduction in the operation costs of this very important economic activity. In this paper, an account about the influence that the selection of the traction system components has on the fuel consumption and the ascending capacity of the vehicle, is presented. As a result of the study, an algorithm based on real performance tests with optimal fuel economy, was developed. The program is useful for the selection of the most appropriate traction system of a given vehicle, taking into account the condition that has to fulfill for a given task. [Spanish] Entre los problemas que afectan a la economia del sector de autotransporte en Mexico, especialmente en el transporte destinado al servicio pesado, se encuentra el de baja eficiencia en el consumo de combustible. A pesar de la avanzada tecnologia que generalmente se va disponiendo y adoptando en el parque vehicular con relacion a la eficiencia energetica, el costo por tonelada transportada no ha disminuido de manera importante. En este trabajo, se presenta un estudio acerca de la influencia que tiene dentro de esta problematica la seleccion de los componentes del tren motriz en el consumo de combustible y en la capacidad de ascenso del vehiculo, en relacion con el peso de la carga transportada. Como resultado del estudio se desarrollo un algoritmo basado en las pruebas reales de desempeno a que puede someterse un vehiculo, buscando el regimen optimo de economia del combustible. El programa permite a las empresas de transporte, seleccionar el tren motriz mas adecuado para cada vehiculo teniendo en cuenta las operaciones a que debera sujetarse en un determinado servicio.

  12. Methodology for classification of commercial edification and of service according to the regulation for voluntary tagging of the energy efficiency level of commercial, services and public buildings - economic evaluation of the simulated and classified models; Metodologia para classificacao de edificacao comercial e de servico conforme a regulamentacao para etiquetagem voluntaria do nivel de eficiencia energetica de edificios comerciais, de servicos e publicos - avaliacao economica dos modelos simulados e classificados

    Energy Technology Data Exchange (ETDEWEB)

    Baptista, Norma do Nascimento; Rovere, Emilio Lebre La [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-Graduacao de Engenharia (COPPE). Programa de Planejamento Energetico], e-mail: normabaptista@ppe.ufrj.br, e-mail: emilio@ppe.ufrj.br

    2008-07-01

    This article presents the methodology developed for determination of energy performance and the classification in accordance with the Regulation for the Voluntary Tagging of the Efficiency Level of commercial, services and public edifications. The methodology applies to commercial and service edification, specifically for offices and schools purposes.

  13. The decrease of the energy performance for the soiling of the air filters in gas turbines; Disminucion de la eficiencia energetica por ensuciamiento de filtros de aire en turbinas de gas

    Energy Technology Data Exchange (ETDEWEB)

    Romero Paredes, H.; Ambriz, J. J.; Vargas, M.; Godinez, M.; Gomez, F.; Valdez, L.; Pantoja, G. [Universidad Autonoma Metropolitana, Unidad Iztapalapa, Mexico D. F. (Mexico)

    1995-12-31

    The object of this paper is to study the effect in the turbine output of a gas turbine of the conditions of the compressor air inlet in going through a series of filters. The algorithm for the calculation of the energy losses due to the variation of the pressure drop caused by the filters according to their cleanliness condition. In the first part the series of variables that affect the gas turbines performance are exemplified, afterwards the characteristics of the air flow into a turbine are presented as well as their effects on the system. Later on, the results obtained of the system simulation are presented and compared with a real case. From the results it can be determined, that depending on the system and on the environment conditions the efficiency drop might be up to 3%, in accordance with the filters cleanliness. The maintenance periods strongly depend on the air quality variations at the filter house inlet in the zone where the power plant is located. [Espanol] El presente trabajo tiene por objetivo estudiar el efecto en la potencia generada en una turbina de gas de las condiciones de entrada del aire al compresor de una turbina de gas al pasar por un conjunto de filtros. Se presenta el algoritmo para la determinacion de las perdidas energeticas debidas a la variacion de la caida de presion generada por los filtros de acuerdo con su estado de limpieza. En la primera parte se ejemplifica el conjunto de variables que influyen en la eficiencia de las turbinas de gas, posteriormente se mencionan las caracteristicas de flujo de aire hacia una turbina y se muestran los efectos sobre el sistema. A continuacion se presentan los resultados obtenidos de la simulacion del sistema y se comparan con un caso real. De los resultados se puede apreciar que, dependiendo del sistema y de las condiciones ambientales el decremento en la eficiencia puede ser hasta del 3% en funcion del nivel de limpieza de los filtros. Los periodos de mantenimiento dependen fuertemente de las

  14. The decrease of the energy performance for the soiling of the air filters in gas turbines; Disminucion de la eficiencia energetica por ensuciamiento de filtros de aire en turbinas de gas

    Energy Technology Data Exchange (ETDEWEB)

    Romero Paredes, H; Ambriz, J J; Vargas, M; Godinez, M; Gomez, F; Valdez, L; Pantoja, G [Universidad Autonoma Metropolitana, Unidad Iztapalapa, Mexico D. F. (Mexico)

    1996-12-31

    The object of this paper is to study the effect in the turbine output of a gas turbine of the conditions of the compressor air inlet in going through a series of filters. The algorithm for the calculation of the energy losses due to the variation of the pressure drop caused by the filters according to their cleanliness condition. In the first part the series of variables that affect the gas turbines performance are exemplified, afterwards the characteristics of the air flow into a turbine are presented as well as their effects on the system. Later on, the results obtained of the system simulation are presented and compared with a real case. From the results it can be determined, that depending on the system and on the environment conditions the efficiency drop might be up to 3%, in accordance with the filters cleanliness. The maintenance periods strongly depend on the air quality variations at the filter house inlet in the zone where the power plant is located. [Espanol] El presente trabajo tiene por objetivo estudiar el efecto en la potencia generada en una turbina de gas de las condiciones de entrada del aire al compresor de una turbina de gas al pasar por un conjunto de filtros. Se presenta el algoritmo para la determinacion de las perdidas energeticas debidas a la variacion de la caida de presion generada por los filtros de acuerdo con su estado de limpieza. En la primera parte se ejemplifica el conjunto de variables que influyen en la eficiencia de las turbinas de gas, posteriormente se mencionan las caracteristicas de flujo de aire hacia una turbina y se muestran los efectos sobre el sistema. A continuacion se presentan los resultados obtenidos de la simulacion del sistema y se comparan con un caso real. De los resultados se puede apreciar que, dependiendo del sistema y de las condiciones ambientales el decremento en la eficiencia puede ser hasta del 3% en funcion del nivel de limpieza de los filtros. Los periodos de mantenimiento dependen fuertemente de las

  15. Selection of the motor train of vehicles of load and passengers service with energy efficiency; Seleccion del tren motriz de vehiculos del servicio de carga y pasajeros con eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Rafael Morales, Mercedes [Instituto Mexicano del Transporte (MExico)

    2003-07-01

    The companies of motor transport in Mexico are affected in their economy mainly by the low efficiency in the fuel consumption, specially the one dedicated to heavy service. Despite the outpost technology that is becoming available and adopted by the vehicular park to vehicular in relation to the energy efficiency, the cost per transported ton has not diminished in any substantial way. In this paper, a study is presented on the influence that it has within this problem, the selection of the components of the motor train in the fuel consumption and the capacity of ascent of the vehicle in relation to the weight of the transported load. As result of the study was developed in the Mexican Institute of Transport a computer program based on the real tests of performance that a vehicle can be subjected to, taking into consideration the optimum regime of the motor with the minimum fuel consumption. The program helps the carrier to select the most suitable motor train for the vehicle that is intended to acquire considering the operations to which it will be subjected to in a certain service, also evaluates the motor train of the existing vehicles in the vehicular fleet of the transport companies. [Spanish] Las empresas de autotransporte en Mexico se ven afectadas en su economia principalmente por la baja eficiencia en el consumo de combustible, especialmente las destinadas al servicio pesado. No obstante la avanzada tecnologia de que se va disponiendo y adoptando en el parque vehicular con relacion a la eficiencia energetica, el costo por tonelada transportada no ha disminuido de manera importante. En este trabajo, se presenta un estudio sobre la influencia que tiene dentro de esta problematica, la seleccion de los componentes del tren motriz en el consumo de combustible y en la capacidad de ascenso del vehiculo en relacion con el peso de la carga transportada. Como resultado del estudio se desarrollo en el Instituto Mexicano del Transporte un programa de computo basado en

  16. The application of the expert system Seilum for the energy assessment in the Universidad Nacional Autonoma de Mexico (UNAM) illumination, phase 1: Acatlan; Aplicacion del sistema experto Seilum para la evaluacion energetica de la iluminacion en la UNAM, fase 1: Acatlan

    Energy Technology Data Exchange (ETDEWEB)

    Kemper Valverde, Nicolas; Lara Rosano, Felipe; Sanchez Cifuentes, Augusto [Universidad Nacional Autonoma de Mexico, Mexico, D. F. (Mexico)

    1993-12-31

    This paper analyses the characteristics of the expert system Seilum and its first validation after being employed to compare the energy audit of the illumination installations carried out at the Universidad Nacional Autonoma de Mexico (UNAM)`s Acatlan Unit. In accordance with these results, the perspectives of its generalized application in the balance of the units is proposed, as well as in the small and medium size Mexican industry. [Espanol] En este trabajo se discuten las caracteristicas del sistema experto Seilum y su primera validacion luego de haber sido empleado para comparar la auditoria energetica de las instalaciones de iluminacion llevada a cabo en la unidad de acatlan de la Universidad Nacional Autonoma de Mexico (UNAM). De acuerdo a estos resultados se plantean las perspectivas de su empleo generalizado en las demas unidades, asi como en la pequena y mediana industria mexicana.

  17. Advancements and results of the program of energy cooperation of the agency for the international development (USAID-MEXICO) in Mexico; Avances y resultados del programa de cooperacin energetica de la agencia para el desarrollo internacional (USAID-MEXICO) en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Landa Bonilla, J. [Agencia para el Desarrollo Internacional, Embajada de los Estados Unidos de Norte Amrica, (Mexico)

    1997-12-31

    energetica, energias renovables y prevencion de la contaminacion entre Mexico y Estados Unidos a traves de la Agencia para el Desarrollo Internacional, USAID-Mexico y las diversas instituciones especializadas del sector. Los principales programas de la USAID-Mexico en este campo se centran en: Proyectos Piloto: tanto con la CONAE como con el FIDE se han implementado programas centrados en la sustitucion de motores estandard por motores de alta eficiencia, en la optimizacion de sistemas de distribucion y generacion de vapor, en el estudio de las practicas de reembobinado de motores; Evaluacion y Monitoreo: se esta proporcionando asistencia tecnica en la evaluacin financiera y monitoreo de los actuales programas de CONAE, FIDE y PAESE, asi como la utilizacin de resultados de los proyectos piloto para posibles programas de gran escala sobre incentivos, descuentos y promocion de tecnologias; Normalizacin: se ha proporcionado apoyo a la CONAE para el desarrollo de diversas normas en eficiencia energetica y se prepararan programas para evaluar el impacto de estas normas sobre el sector productivo del pais; Energas Renovables: desde 1993 se ha estado implementando un programa de cooperacion sobre fuentes alternas de energia con aplicaciones productivas en areas rurales con diversas instituciones del sector productivo rural como FIRCO y algunos gobiernos de los estados; Prevencion de la Contaminacion: conjuntamente con el programa de eficiencia energetica de la USAID en Washington, la EPA y el Centro Mexicano para la Produccion mas Limpia se han desarrollado diversos proyectos piloto sobre eficiencia energetica y prevencion de la contaminacion en industrias como la maquiladora, de galvanoplasta y fundicion; Fortalecimiento Institucional: durante los ultimos cuatro anos se ha proporcionado apoyo a las principales instituciones mencionadas anteriormente en materia de capacitacion para fortalecer internamente sus cuadros tecnicos.

  18. Advancements and results of the program of energy cooperation of the agency for the international development (USAID-MEXICO) in Mexico; Avances y resultados del programa de cooperacin energetica de la agencia para el desarrollo internacional (USAID-MEXICO) en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Landa Bonilla, J [Agencia para el Desarrollo Internacional, Embajada de los Estados Unidos de Norte Amrica, (Mexico)

    1998-12-31

    energetica, energias renovables y prevencion de la contaminacion entre Mexico y Estados Unidos a traves de la Agencia para el Desarrollo Internacional, USAID-Mexico y las diversas instituciones especializadas del sector. Los principales programas de la USAID-Mexico en este campo se centran en: Proyectos Piloto: tanto con la CONAE como con el FIDE se han implementado programas centrados en la sustitucion de motores estandard por motores de alta eficiencia, en la optimizacion de sistemas de distribucion y generacion de vapor, en el estudio de las practicas de reembobinado de motores; Evaluacion y Monitoreo: se esta proporcionando asistencia tecnica en la evaluacin financiera y monitoreo de los actuales programas de CONAE, FIDE y PAESE, asi como la utilizacin de resultados de los proyectos piloto para posibles programas de gran escala sobre incentivos, descuentos y promocion de tecnologias; Normalizacin: se ha proporcionado apoyo a la CONAE para el desarrollo de diversas normas en eficiencia energetica y se prepararan programas para evaluar el impacto de estas normas sobre el sector productivo del pais; Energas Renovables: desde 1993 se ha estado implementando un programa de cooperacion sobre fuentes alternas de energia con aplicaciones productivas en areas rurales con diversas instituciones del sector productivo rural como FIRCO y algunos gobiernos de los estados; Prevencion de la Contaminacion: conjuntamente con el programa de eficiencia energetica de la USAID en Washington, la EPA y el Centro Mexicano para la Produccion mas Limpia se han desarrollado diversos proyectos piloto sobre eficiencia energetica y prevencion de la contaminacion en industrias como la maquiladora, de galvanoplasta y fundicion; Fortalecimiento Institucional: durante los ultimos cuatro anos se ha proporcionado apoyo a las principales instituciones mencionadas anteriormente en materia de capacitacion para fortalecer internamente sus cuadros tecnicos.

  19. The application of the expert system Seilum for the energy assessment in the Universidad Nacional Autonoma de Mexico (UNAM) illumination, phase 1: Acatlan; Aplicacion del sistema experto Seilum para la evaluacion energetica de la iluminacion en la UNAM, fase 1: Acatlan

    Energy Technology Data Exchange (ETDEWEB)

    Kemper Valverde, Nicolas; Lara Rosano, Felipe; Sanchez Cifuentes, Augusto [Universidad Nacional Autonoma de Mexico, Mexico, D. F. (Mexico)

    1992-12-31

    This paper analyses the characteristics of the expert system Seilum and its first validation after being employed to compare the energy audit of the illumination installations carried out at the Universidad Nacional Autonoma de Mexico (UNAM)`s Acatlan Unit. In accordance with these results, the perspectives of its generalized application in the balance of the units is proposed, as well as in the small and medium size Mexican industry. [Espanol] En este trabajo se discuten las caracteristicas del sistema experto Seilum y su primera validacion luego de haber sido empleado para comparar la auditoria energetica de las instalaciones de iluminacion llevada a cabo en la unidad de acatlan de la Universidad Nacional Autonoma de Mexico (UNAM). De acuerdo a estos resultados se plantean las perspectivas de su empleo generalizado en las demas unidades, asi como en la pequena y mediana industria mexicana.

  20. The biological degradation as an energy option, determination of the effects of the aerobic phase on the subsequent production of biogas in a sanitary landfill; La degradacion biologica como una opcion energetica, determinacion de los efectos de la fase aerobia sobre la subsecuente produccion de biogas en un relleno sanitario

    Energy Technology Data Exchange (ETDEWEB)

    Aguilar Juarez, Oscar [Asesoria de Servicios Ambientales del Bajio (ASSB), (Mexico)

    2010-07-01

    The present work deals with the energy evaluation of biological processes as energy source and is based on works concerning laboratory, pilot and field research. The objective of the research is to integrate the effect of the aerobic phase during the process of degradation of organic residues (basically the organic fraction of domestic residues), where the last aim is the biogas production. The usefulness of the results is reflected in the suitable estimation of the filling of a sanitary landfill considering the composition of the residues deposited and the effects that this management will have on the run-up time of the same and the velocity of biogas production. Finally, integrates a reflection on the intrinsic energy implications of the process and of the biogas yielding, which is evaluated as well as energy source. [Spanish] El presente trabajo trata sobre la valoracion energetica de procesos biologicos como fuente de energia y se basa en trabajos de investigacion a nivel de laboratorio, piloto y de campo. El objetivo de la investigacion es integrar el efecto de la fase aerobia durante el proceso de degradacion de residuos organicos (basicamente la fraccion organica de residuos domesticos), donde el fin ultimo es la produccion de biogas. La utilidad de los resultados se refleja en la estimacion adecuada del llenado de un relleno sanitario considerando la composicion de los residuos ahi depositados y los efectos que tendra esta gestion sobre el tiempo de estabilizacion de los mismos y la velocidad de produccion de biogas. Finalmente, se integra una reflexion sobre las implicaciones energeticas intrinsecas al proceso y del rendimiento de biogas, el cual a su vez es valorizado como fuente de energia.

  1. The management strategy of energetic companies before new businesses: CESP - a case study; A postura empresarial de empresas energeticas diante de novos negocios: CESP - um estudo de caso

    Energy Technology Data Exchange (ETDEWEB)

    Prado Junior, Fernando Amaral de Almeida

    1994-12-01

    This thesis focuses the new challenges which the Brazilian electric power companies have been facing towards the new market requirements. Special emphasis is given to: organizational theory; Brazilian electric power industry history; and, comparative analysis of the Brazilian electric power system regulation and legislation. A case study is presented based on the electric power company of Sao Paulo State - Southeast Brazil 60 refs., 21 figs., 37 tabs.

  2. The agricultural sector in Bahia State: economic outlook and energy intensity; O setor agropecuario no estado da Bahia: perspectivas economicas e intensidade energetica

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Claudio Bezerra de [Faculdade Apoio, Lauro de Freitas, BA (Brazil); Bajay, Sergio Valdir [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico

    2006-07-01

    The main characteristics of the rural economy in the State of Bahia are presented in this paper, together with the evolution of its main components in the last years and the growth perspectives for the next years. A more detailed analysis is carried out for the rural areas in the state which present higher development potential and for their respective crops . The progression of the state of Bahia' shares in the national rural economy's value added and the energy intensity changes of the main energy carriers employed in this sector are also presented in the paper. (author)

  3. Energy efficiency programs in Brazil: formulation of public policy, planning and management; Programas de eficiencia energetica no Brasil: formulacao de politicas publicas, planejamento e gestao

    Energy Technology Data Exchange (ETDEWEB)

    Bajay, Sergio Valdir [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Nucleo Interdisciplinar de Planejamento Energetico], email: bajay@fem.unicamp.br

    2010-07-01

    The Brazilian government never had a long-term policy for energy efficiency, with clearly defined energy conservation targets, implementation strategies, time schedules and responsibilities. The planning of energy efficiency programmes in the country is still in an early stage and the management of these programmes is far from satisfactory. A critical analysis of these three forms of federal government intervention in this area is carried out in this paper and several measures are proposed to the Ministry of Mines and Energy, some other ministries and to the Energy Research Company, which can increase substantially the adoption of new energy efficiency programmes in Brazil. (author)

  4. The agricultural sector in Bahia State: economic outlook and energy intensity; O setor agropecuario no estado da Bahia: perspectivas economicas e intensidade energetica

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Claudio Bezerra de [Faculdade Apoio, Lauro de Freitas, BA (Brazil); Bajay, Sergio Valdir [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico

    2006-07-01

    The main characteristics of the rural economy in the State of Bahia are presented in this paper, together with the evolution of its main components in the last years and the growth perspectives for the next years. A more detailed analysis is carried out for the rural areas in the state which present higher development potential and for their respective crops . The progression of the state of Bahia' shares in the national rural economy's value added and the energy intensity changes of the main energy carriers employed in this sector are also presented in the paper. (author)

  5. Energy efficiency and CDM (Clean Development Mechanism): an attractive combination?; Eficiencia energetica e MDL (Mecanismo de Desenvolvimento Limpo): uma combinacao atrativa?

    Energy Technology Data Exchange (ETDEWEB)

    Aragao Neto, Raymundo Moniz de; Silva, Pedro Paulo [Programa GERBI - Reducao da Emissao de Gases Causadores do Efeito Estufa na Industria Brasileira, CE (Brazil); Almeida, Jose Ricardo Uchoa Cavalcanti [PETROBRAS S.A., Pojuca, BA (Brazil). Unidade de Negocios de Gas Natural (UNGN)

    2004-07-01

    The agreements that defined associated practices to the CDM (Clean Development Mechanism) include energy efficiency in end users as a possible candidate to CDM eligibility. Worldwide, the experience of using 'carbon credits' resulted from reduced emissions in end users, as consequence of increased energy efficiency in processes, is limited. The paper presents preliminary conclusions of case studies developed by GERBI, evaluating the emissions reduction potential achieved by energy efficiency improvements in industrial processes, as well as financial impacts due to emissions reduction certificates traded. The paper considers a simplified methodology for feasibility analysis, but with necessary information to demonstrate how CDM and Energy Efficiency combination can support the decision for project implementation. (author)

  6. The performance of ELETROBRAS, through PROCEL, in the energy efficiency of Brazilian industries; Atuacao da ELETROBRAS, atraves do PROCEL, na eficiencia energetica de industrias brasileiras

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, C A; Perrone, F P.D.; Moreira, M A.R.G.; Oliveira, H L; Pinto, A B.A.; Sobral, A S; Motta, B R; Moya, C H; Spera, M R; Vilela, L C.T.; Goes, R.R. de A.; Teixeira, M V.P.; Sobral, R.L. [Centrais Eletricas Brasileiras S.A. (ELETROBRAS), Rio de Janeiro, RJ (Brazil)], E-mail: carlosaparecido@eletrobras.com

    2009-07-01

    The technical part of this paper defends the idea of accomplishing systemic instead of punctual analysis in motor driven systems at industries, since the energetic efficiency potentials increase when all elements of the motor driven system is analyzed and not only the electrical motor. The institutional part of this paper presents the strategies of PROCEL Industria, executed by ELETROBRAS/PROCEL. The actions of this PROCEL sub program consist, basically, on activities with industrial state federations and universities so as to reduce the electrical energy consumption of motor driven systems in industries, which consumes almost 30% of the total Brazilian electricity consumption. This paper also presents results, experiences and future actions of PROCEL Industria. (author)

  7. Contribution to the operating energy planning of hydrothermal power systems; Contribuicao ao planejamento da operacao energetica de sistemas hidrotermicos de potencia

    Energy Technology Data Exchange (ETDEWEB)

    Carneiro, Adriano Alber de Franca Mendes

    1991-08-01

    This work treats of the problem of the planning of the energy operation of hydrothermal power systems, gone back to those with predominance of hydraulic generation, as it is the case of the Brazilian system. The work makes an analysis of the problem of the planning of the energy operation of systems hydrothermal leaving of the concepts and nature of this problem. Their inherent difficulties are shown and they come the main approaches in operation in countries with predominance of hydroelectric generation. It still introduces the methodology in energy planning in Brazil being pointed their main limitations. Finally an alternative model for the planning of the energy operation of the system brazilian hydrothermal, based on the made studies is also presented.

  8. Planning of the energetic operation based on storage guide-curves; Planejamento da operacao energetica baseado em curvas-guias de armazenamento

    Energy Technology Data Exchange (ETDEWEB)

    Zambelli, Monica de S.; Cicogna, Marcelo A.; Soares, Secundino [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Eletrica

    2006-07-01

    The proposal of this work is to present a long term hydrothermal scheduling operating policy based on the concept of storage guide-curves. According to this policy, at each stage of the planning period the decision of the amount of water to be discharged by each hydrothermal unit must be such that keep its reservoir at levels pre-determined by curves obtained by an optimization method. The performance analysis for this operating policy is given by simulation with historical inflow data, considering a single hydrothermal system, constituted by a single hydro plant, and a composite system, constituted by hydro plants in cascade, adopting as performance criteria the minimization of the expected operating cost. The results demonstrate that, although simple and clear, this operating policy presents a competitive performance in the long term hydrothermal scheduling. (author)

  9. Systems for the calculation of electrical parameters and energy efficiency for high-capacity hydroelectric generators; Sistemas para el calculo de parametros electricos y eficiencia energetica para generadores hidroelectricos de gran capacidad

    Energy Technology Data Exchange (ETDEWEB)

    Reyes Martinez, Oscar Alfonso; Pascacio de los Santos, Alberth; Perez Abad, Carlos Alberto [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Leon Rivera, Nicolas [CFE-LAPEM, Irapuato, Guanajuato (Mexico)

    2012-07-01

    construccion es la Central Hidroelectrica La Yesca, el cual concluira a finales de 2012 y consiste en dos generadores electricos de 375 MW, 17 kV. Sera el segundo en potencia y el tercero en generacion electrica en el sistema. De acuerdo con las normas nacionales e internacionales, debe efectuarse un conjunto de pruebas estaticas y dinamicas en estos generadores antes de la puesta en servicio, para asegurar su operacion apropiada. La prueba de resistencia de alto voltaje del devanado del estator, la prueba de corto circuito subito trifasico y el calculo de eficiencia energetica son algunas de las pruebas mas importantes por realizar en un nuevo generador electrico. Estas pruebas son dificiles de efectuar en sitio debido a la capacidad del equipo requerido, por lo que muy pocas companias en el mundo pueden conducirlas.

  10. Towards a sustainable architecture: Adequate to the environment and of maximum energy efficiency; Hacia una arquitectura sustentable: adecuada al ambiente y de maxima eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Morillon Galvez, David [Comision Nacional para el Ahorro de Energia, Mexico, D. F. (Mexico)

    1999-07-01

    An analysis of the elements and factors that the architecture of buildings must have to be sustainable, such as: a design adequate to the environment, saving and efficient use of alternate energies, and the auto-supply is presented. In addition a methodology for the natural air conditioning (bioclimatic architecture) of buildings, as well as ideas for the saving and efficient use of energy, with the objective of contributing to the adequate use of components of the building (walls, ceilings, floors etc.), is presented, that when interacting with the environment it takes advantage of it, without deterioration of the same, obtaining energy efficient designs. [Spanish] Se presenta un analisis de los elementos y factores que debe tener la arquitectura de edificios para ser sustentable, como; un diseno adecuado al ambiente, ahorro y uso eficiente de la energia, el uso de energias alternas y el autoabastecimiento. Ademas se propone una metodologia para la climatizacion natural (arquitectura bioclimatica) de edificios, asi como ideas para el ahorro y uso eficiente de energia, con el objetivo de aportar al uso adecuado de componentes del edificio (muros, techos, pisos etc.) que al interactuar con el ambiente tome ventaja de el, sin deterioro del mismo, logrando disenos energeticamente eficientes.

  11. The development of heat exchangers with advanced thermomechanical materials; Sviluppi e prospettive degli scambiatori di calore ceramici per l`impiantistica energetica ad alta temperatura

    Energy Technology Data Exchange (ETDEWEB)

    Capra, Marcello [ENEA, Centro Ricerche Casaccia, Rome (Italy). Dipt. Energia

    1997-07-01

    Current metallurgical limitations necessarily impose a number of restrictions on the efficiency of power plant and combustion systems. These limitations include both temperature and corrosion resistance. If significant improvements can be made in these areas, then not only will it be possible to obtain higher system efficiencies, but it will also be possible to further exploit new technologies. Consequently, there is appreciable interest in the development of ceramic tubes for heat exchangers. Such tubes would offer the potential of operation at much higher temperatures combined with a much improved resistance to chemical attack. They are unlikely to be suitable for high pressure operation, at least in the foreseeable future, and hence their use would be limited generally to gas to gas exchangers. In spite of the limitations on details and specific technological solutions imposed by industrial property conditions, this report provides an overview on the development of these components, which is in charge of all the major international industrial companies of the field, in consideration of the relevant benefits coming from their large industrialization. After an analysis of the industrial situation of the product, in terms both of possible applications and economical impacts on the market, an overview of major on-going R and D programmes is carried out. At present, these programmes are mostly within the general frame of the study of advanced thermomechanical components and the related manufacturing technologies development.

  12. The South American energy policies: regional problems and national logics; As politicas energeticas Sul-Americanas: problemas regionais e logicas nacionais

    Energy Technology Data Exchange (ETDEWEB)

    Le Prioux, Bruna [Centro de Pesquisa e Documentacao da America Latina (CREDAL) (France)

    2010-07-01

    The international energy context in the first decade of the 21st century can be described by the following points. First, the growing concerns with climatic changes and the greenhouse effect, which the main cause is the massive use of fossil fuels. Second, the energy vulnerability, due to the mistrust in the main hydrocarbon producers, to the increasing consumption from the so-called developing countries and to the idea of a possible end of oil reserves. And third, as a consequence of the least factor, an intense speculation in international market has increased the prices of oil barrel and gas since 2005. In this context, each country tries to adapt to their way of such changes. Beyond local solutions, South American countries have historic attempts of regional integration through energy, which can be presented as a complement of national policies. This research focuses on the study of the gas energy policy of some producers' and consumers' countries in South America, their choices and procedures in the national and international scope. Thus, the main goal of this article is to analyze how national energy policies affect the regional energy action of these South American countries. In order to answer this question, our goals are: (1) diagnosing the energy potentialities and disadvantages of each country; (2) identifying concepts related to energy questions; and (3) relating the two past steps to analyze the energy interaction in South America. The countries selected to this research are: Brazil, Argentina and Chile, due to their economic magnitude in South America and their intense energy consumption; and Bolivia and Venezuela, due to their energy reserves and surplus. The study of national energy systems was made through SWOT analysis (Strengths, Weaknesses, Opportunities and Threat), in order to have a synthetically diagnosis about the energetic potentials and disadvantages of each country. Thereafter, we intersect this data with concepts as

  13. Evaluation of the BPW34 photodiode response in quality of RQR radiation of the regulation IEC 61267 implanted at the IPEN and CRCN-NE, Brazil; Avaliacao da resposta do fotodiodo BPW34 em qualidades de radiacao RQR da norma IEC 61267 implantadas no IPEN e no CRCN-NE

    Energy Technology Data Exchange (ETDEWEB)

    Magalhaes, Cinthia M.S. de; Santos, Luiz A.P. dos; Santos, Marcus A.P. dos, E-mail: lasantos@cnen.gov.b, E-mail: masantos@cnen.gov.b [Centro Regional de Ciencias Nucleares do Nordeste (CRCN-NE/CNEN-PE), Recife, PE (Brazil); Caldas, Linda V.E., E-mail: lcaldas@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil); Souza, Divanizia do N., E-mail: divanizi@ufs.b [Universidade Federal de Sergipe (UFS), Aracaju, SE (Brazil). Dept. de Fisica

    2011-10-26

    This paper evaluated the answer of two commercial BPW34 photodiodes in four RQR radiation qualities implanted, in accordance with the regulation IEC 61267, at the laboratory of the instrument calibrations of the Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN) and radiation metrology laboratory of Northeastern Centro Regional de Ciencias Nucleares (CRCN-NE/CNEN). The results have shown that is possible to relate the qualities implanted at those laboratories and that the BPW34 photodiode can be useful for comparative evaluations of distinct qualities of radiodiagnostic beams

  14. Mechanical And Microstructural Evaluation Of A Wear Resistant Steel; Avaliacao mecanica e microestrutural de um aco resistente ao desgaste

    Energy Technology Data Exchange (ETDEWEB)

    Santos, F.L.F. dos; Vieira, A.G.; Correa, E.C.S.; Pinheiro, I.P., E-mail: falletti@hotmail.co [Centro Federal de Educacao Tecnologica de Minas Gerais (CEFET/MG), Belo Horizonte, MG (Brazil). Dept. de Engenharia de Materiais

    2010-07-01

    In the present work, the analysis of the mechanical properties and the microstructural features of a high strength low alloy steel, containing chromium, molybdenum and boron, subjected to different heat treatments, was conducted. After austenitizing at 910 deg C for 10 minutes, three operations were carried out: oil quenching, oil quenching followed by tempering at 200 deg C for 120 minutes and austempering at 400 deg C for 5 minutes followed by water cooling. The analysis was performed through tensile and hardness tests, optical microscopy and X-ray diffraction. The bainitic structure led to high strength and toughness, both essential mechanical properties for wear resistant steels. The occurrence of allotriomorphic ferrite and retained austenite in the samples also increased the wear resistance. This phenomenon is related to the fact that both structures are able to be deformed and, in the case of the retained austenite, the transformation induced plasticity TRIP effect may take place as the material is used. (author)

  15. Experimental analysis of a nuclear reactor prestressed concrete pressure vessels model

    International Nuclear Information System (INIS)

    Vallin, C.

    1980-01-01

    A comprehensible analysis was made of the performance of each set of sensors used to measure the strain and displacement of a 1/20 scale Prestressed Concrete Pressure Vessel (PCPV) model tested at the Instituto de Pesquisas Energeticas e Nucleares (IPEN). Among the three Kinds of sensors used (strain gage, displacement transducers and load cells) the displacement transducers showed the best behavior. The displacemente transducers data was statistically analysed and a linear behavior of the model was observed during the first pressurizations tests. By means of a linear statistical correlation between experimental and expected theoretical data it was found that the model looses the linearity at a pressure between 110-125 atm. (Author) [pt

  16. Developing pipeline risk methodology for environmental license permit; Metodologia para avaliacao do risco em dutos, no licenciamento ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Arruda, Paulo; Naime, Andre [Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renovaveis (IBAMA), Brasilia, DF (Brazil). Diretoria de Licenciamento e Qualidade Ambiental; Serpa, Ricardo [Companhia de Tecnologia de Saneamento Ambiental (CETESB), Sao Paulo, SP (Brazil). Setor de Analise de Riscos; Mendes, Renato F. [PETROBRAS Engenharia, RJ (Brazil); Ventura, Gilmar [TRANSPETRO - PETROBRAS Transportes, Rio de Janeiro, RJ (Brazil)

    2005-07-01

    Some new pipelines undertakings aim to establish connection between gas provinces in the Southeast and consumers in the Northeast of Brazil, in order to supply medium consuming centers and regions with minor potential of development. Consulting companies are carrying out Environmental Assessments studies and among them is the Risk Analyses of these pipeline transmission systems, in order to receive environmental permits by IBAMA, the Federal Brazilian Environmental Agency. In addition, existing interstate pipeline systems which are under IBAMA regulation will also require the same attention. For the purpose of defining a Pipeline Risk Analysis Protocol with methodology and risk criteria, with minimum risk analysis information on a comprehensive process, it has been decided for a 'tour de force' formed by experts from IBAMA and PETROBRAS engineers. The risk assessment protocol is focus on the risk to communities in the neighborhood of these pipelines and on the potential damage to the environment near and far from the ROW. The joined work ended up in two protocols, which attempt to provide environmental license permits for oil pipeline and gas pipelines with minimum contents for risk analysis studies. Another aspect is the environmental risk that has been focused on the contingency plan approach, since there are no consolidated environmental risk criteria for application as a common worldwide sense. The environmental risk mapping - MARA methodology will indicate areas with potential to be affected by leakages along a pipeline system. (author)

  17. Evaluation of sulphonated polycarbonate membranes for fuel cells; Avaliacao de membranas de policarbonato sulfonado para celulas a combustivel

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Isabela M.M.; Gomes, Ana C.; Pessan, Luiz A. [Universidade Federal de Sao Carlos (UFSCAR), SP (Brazil). Dept. de Engenharia de Materiais], e-mail: isabelamuglia@gmail.com; Paranhos, Caio [Universidade Federal de Sao Carlos (UFSCAR), SP (Brazil). Dept. de Quimica

    2011-07-01

    Fuel cells based on ion conducting polymer membranes offer an alternative for the conventional energetic matrices. Among many advantages of this system, we can mention the reduction on the emission of pollutants, high efficiency and simplicity. This work presents the modification of polycarbonate by sulfonation reaction using acetyl sulfate, in order to increase the conductor ionic character of the membranes used as electrolytes for hydrogen fuel cells. The sulfonated polycarbonate membranes were obtained by casting and then characterized by Fourier transform infrared spectroscopy, water vapor transmission, differential scanning calorimetry, thermogravimetric analysis and viscosimetry. (author)

  18. Simulation and evaluation of mammography quality from an X-ray equipment of a instrument calibration laboratory; Simulacao e avaliacao das qualidades da mamografia do equipamento de raios-x de um laboratorio de calibracao de instrumentos

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Natalia F. da; Castro, Maysa C. de; Caldas, Linda V.E., E-mail: na.fiorini@gmail.com, E-mail: maysadecastro@gmail.com, E-mail: lcaldas@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2014-07-01

    The Instrument Calibration Laboratory (ICL) of the Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP, Brazil has developed some work in order to establish a primary standard system for low energy X-ray employing a ionization chamber of free air. For this, one of the most important steps is the determination of factors of correction of its answer. Simulation is a frequently used tool for this because some correction factors can not be determined experimentally. For the correct simulation of these correction factors is necessary some input parameters such as geometry, the material composition of the dosimeter, the experimental arrangement and the radiation source are specified correctly. For the ionization chamber available on the LCI, the geometry, the material components and the experimental arrangement can be obtained easily. On the other hand, spectrum of radiation energy source, which must be inserted into the computer code has not been obtained. Thus, this study aims to determine this radiation spectrum, thus enabling the characterization of the new primary standard for low power X-radiation of ICL.

  19. Experimental evaluation of the objective virtual mass coefficient; Avaliacao experimental do coeficiente de massa virtual apoiada em uma formulacao objetiva

    Energy Technology Data Exchange (ETDEWEB)

    Heilbron Filho, Paulo Fernando Lavalle

    1984-04-15

    This work is a continuation of many others studies that have been made in the field of two-phase flow, concerning the influence of the void fraction in a parameter known as 'induced mass' that appears in the constitutive equation of the inter-phase force called 'virtual mass force'. The determination of the influence of the void fraction in the induced mass is done using experiment involving a bubble flow in a vertical tube filled with water. Using the two-phase flow model together with some hypothesis concerning the bubble flow experience and the constitutive equation for the virtual mass force, we achieve through the analysis of the filming of the experiment our purpose in determining the influence of the void fraction on the induced mass. (author)

  20. Application of nuclear magnetic resonance in osteoporosis evaluation; Aplicacoes de ressonancia magnetica nuclear na avaliacao de osteoporose

    Energy Technology Data Exchange (ETDEWEB)

    Giannoni, Ricardo A., E-mail: giannoni@ird.gov.br [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Montrazi, Elton T.; Bonagamba, Tito J., E-mail: elton.montrazi@gmail.com, E-mail: tito@ifsc.usp.br [Universidade de Sao Paulo (IFSC/USP), Sao Carlos, SP (Brazil). Inst. de Fisica; Cesar, Reinaldo, E-mail: reinaldofisica@gmail.com [Universidade de Sao Paulo (EESC/USP), Sao Carlos, SP (Brazil). Escola de Engenharia

    2013-07-01

    In this work, initially ceramic samples of known porosity were used. These ceramic samples were saturated with water. The nuclear magnetic resonance signal due to relaxation processes that the hydrogen nucleus water contained in the pores of this ceramic material was measured. Then these samples were subjected to a process of drying and measures successively. As the water contained in pores greater evaporates the intensity of signal decreases and shows the sign because of the smaller pores. The analysis of this drying process gives a qualitative assessment of the pore size of the material. In a second step, bones of animals of unknown porosity underwent the same methodology for evaluating osteoporosis. Also a sample of human vertebra in a unique manner, with the same purpose was measured. Combined with other techniques is a quantitative evaluation of the possible porosity.

  1. Synthesis and evaluation of antimalarial activity of curcumin derivatives; Sintese e avaliacao da atividade antimalarica de compostos derivados da curcumina

    Energy Technology Data Exchange (ETDEWEB)

    Gomes, Patricia Ramos; Miguel, Fabio Balbino; Almeida, Mauro Vieira de; Couri, Mara Rubia Costa [Universidade Federal de Juiz de Fora (UFSJ), MG (Brazil). Instituto de Ciencias Exatas. Departamento de Quimica; Oliveira, Michael Eder de; Ferreira, Vanessa Viana; Guimaraes, Daniel Silqueira Martins; Lima, Aline Brito de; Barbosa, Camila de Souza; Oliveira, Mariana Amorim de; Almeida, Mauro Vieira de; Viana, Gustavo Henrique Ribeiro; Varotti, Fernando de Pilla, E-mail: varotti@ufsj.edu.br [Universidade Federal de Sao Joao Del Rei (UFSJ), MG (Brazil). Centro de Ciencias da Saude; others, and

    2014-05-15

    ne of the main challenges in the development of new antimalarial drugs is to achieve a viable lead candidate with good pharmacokinetic properties. Curcumin has a broad range of biological activities, including antimalarial activity. Herein, we report the antimalarial activity of six curcumin derivatives (6-12) and an initial analysis of their pharmacokinetic properties. Five compounds have demonstrated potent activity against the P. falciparum in vitro (IC{sub 50} values ranging from 1.7 to 15.2 μg mL{sup -1}), with moderate or low cytotoxicity against the HeLa cell line. The substitution of the carbonyl group in 6 by a 2,4-dinitrophenylhydrazone group (to afford 11) increases the Selective Index. These preliminary results indicate curcumin derivatives as potential antimalarial compounds. (author)

  2. Probabilistic model for primary distribution networks performance evaluation; Modelo probabilistico para avaliacao do desempenho de redes de distribuicao primaria

    Energy Technology Data Exchange (ETDEWEB)

    Valente, Andre Luiz de Carvalho

    1997-07-01

    A method for performance evaluation of primary feeders with respect to voltage drop, loss and level of reliability to use, specially in studies of investment planning is focused. The probabilistic model is the chronological minimum length tree. The work consists of: analysis of model; proposition of modifications in model necessary to brazilian electrical sector reality, introducing parameter representing the load density; model adaptation to reliability studies, with evaluation of principal indicators in use in the country; development of software for microcomputer; the simulation of some cases with the software; based in the results, attainment of laws to facilitate the use of model. Eventually, the conclusions are made with considerations about possible applications of the method and research topics for further developments are settled. (author)

  3. Experimental evaluation of the objective virtual mass coefficient; Avaliacao experimental do coeficiente de massa virtual apoiada em uma formulacao objetiva

    Energy Technology Data Exchange (ETDEWEB)

    Heilbron Filho, Paulo Fernando Lavalle

    1984-04-15

    This work is a continuation of many others studies that have been made in the field of two-phase flow, concerning the influence of the void fraction in a parameter known as 'induced mass' that appears in the constitutive equation of the inter-phase force called 'virtual mass force'. The determination of the influence of the void fraction in the induced mass is done using experiment involving a bubble flow in a vertical tube filled with water. Using the two-phase flow model together with some hypothesis concerning the bubble flow experience and the constitutive equation for the virtual mass force, we achieve through the analysis of the filming of the experiment our purpose in determining the influence of the void fraction on the induced mass. (author)

  4. Energy Statistics Manual; Manual de Estadisticas Energeticas

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    Detailed, complete, timely and reliable statistics are essential to monitor the energy situation at a country level as well as at an international level. Energy statistics on supply, trade, stocks, transformation and demand are indeed the basis for any sound energy policy decision. For instance, the market of oil -- which is the largest traded commodity worldwide -- needs to be closely monitored in order for all market players to know at any time what is produced, traded, stocked and consumed and by whom. In view of the role and importance of energy in world development, one would expect that basic energy information to be readily available and reliable. This is not always the case and one can even observe a decline in the quality, coverage and timeliness of energy statistics over the last few years.

  5. Institutional effectiveness of energy efficiency national programs: Brazil, Chile, Mexico and Uruguay cases; Eficacia institucional de los programas nacionales de eficiencia energetica: los casos del Brasil, Chile, Mexico y el Uruguay

    Energy Technology Data Exchange (ETDEWEB)

    Ruchansky, Beno [Division de Recursos Naturales e Infraestructura de la CEPAL (Chile); De Buen Rodriguez, Odon [Energia, Tecnologia y Educacion, S.C., ENTE, S.C. (Mexico); Januzzi, Gilberto; Romero, Andres

    2011-05-15

    supports the implementation of mechanisms, programs and policies to promote EE. [Spanish] En este trabajo se aborda la experiencia de cuatro paises latinoamericanos en temas relacionados con la Eficiencia Energetica (EE), con especial enfasis en la creacion de la institucionalidad requerida para el desarrollo de politicas, programas y mecanismos de promocion de la EE, y su eficacia para el logro de tal fin. El amplio abanico de situaciones que presenta el estudio de los casos nacionales de Brasil, Chile, Mexico y Uruguay, asi como la riqueza de sus experiencias, pueden constituir un importante aporte para la promocion de la EE en la region. Brasil destaca por su larga y rica trayectoria en el campo de la promocion de la EE. Entre esos antecedentes sobresale la labor realizada desde 1985 por el PROCEL, un programa federal con base de operacion en ELETROBRAS, que oficio en gran parte del periodo como coordinador nacional de las actividades de EE en el sector electrico y fue responsable de la exitosa implementacion de actividades de fomento a la EE en multiples areas. Si bien el PROCEL y CONPET siguen cumpliendo un importante rol, a lo largo del tiempo, se han ido incorporando otros actores a las actividades relacionadas con la EE, constatandose en los ultimos anos un gradual traspaso de las actividades de dichos programas hacia las principales agencias del sector, particularmente MME, ANEEL, ANP y EPE. Actualmente Brasil presenta una extensa red de instituciones publicas y privadas que actuan en el ambito de la EE, asi como un marco normativo favorable al impulso de la EE, con recursos y mecanismos regulatorios adecuados para financiar y orientar dichas actividades. No obstante la multiplicidad de iniciativas implementadas, estas no constituyen aun una politica nacional de EE. En este sentido es perceptible la necesidad de una mayor coordinacion institucional que permita una mejor convergencia de resultados, aprovechamiento de las economias de escala y que genere

  6. Institutional effectiveness of energy efficiency national programs: Brazil, Chile, Mexico and Uruguay cases; Eficacia institucional de los programas nacionales de eficiencia energetica: los casos del Brasil, Chile, Mexico y el Uruguay

    Energy Technology Data Exchange (ETDEWEB)

    Ruchansky, Beno [Division de Recursos Naturales e Infraestructura de la CEPAL (Chile); De Buen Rodriguez, Odon [Energia, Tecnologia y Educacion, S.C., ENTE, S.C. (Mexico); Januzzi, Gilberto; Romero, Andres

    2011-05-15

    implementation of mechanisms, programs and policies to promote EE. [Spanish] En este trabajo se aborda la experiencia de cuatro paises latinoamericanos en temas relacionados con la Eficiencia Energetica (EE), con especial enfasis en la creacion de la institucionalidad requerida para el desarrollo de politicas, programas y mecanismos de promocion de la EE, y su eficacia para el logro de tal fin. El amplio abanico de situaciones que presenta el estudio de los casos nacionales de Brasil, Chile, Mexico y Uruguay, asi como la riqueza de sus experiencias, pueden constituir un importante aporte para la promocion de la EE en la region. Brasil destaca por su larga y rica trayectoria en el campo de la promocion de la EE. Entre esos antecedentes sobresale la labor realizada desde 1985 por el PROCEL, un programa federal con base de operacion en ELETROBRAS, que oficio en gran parte del periodo como coordinador nacional de las actividades de EE en el sector electrico y fue responsable de la exitosa implementacion de actividades de fomento a la EE en multiples areas. Si bien el PROCEL y CONPET siguen cumpliendo un importante rol, a lo largo del tiempo, se han ido incorporando otros actores a las actividades relacionadas con la EE, constatandose en los ultimos anos un gradual traspaso de las actividades de dichos programas hacia las principales agencias del sector, particularmente MME, ANEEL, ANP y EPE. Actualmente Brasil presenta una extensa red de instituciones publicas y privadas que actuan en el ambito de la EE, asi como un marco normativo favorable al impulso de la EE, con recursos y mecanismos regulatorios adecuados para financiar y orientar dichas actividades. No obstante la multiplicidad de iniciativas implementadas, estas no constituyen aun una politica nacional de EE. En este sentido es perceptible la necesidad de una mayor coordinacion institucional que permita una mejor convergencia de resultados, aprovechamiento de las economias de escala y que genere oportunidades para la

  7. Evaluation of elemental composition of clays from Campos Gerais (MG); Avaliacao da composicao elementar de argilas de Campos Gerais (MG)

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Joao P.M.; Maduar, Marcelo F.; Silva, Paulo S.C da, E-mail: jpmm0697@hotmail.com [Instituto de Pesquisas Energeticas e nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2013-07-01

    There are numerous applications given to clays including oil and water adsorbent, ceramic, whitening of beverages, porcelain, waste treatment, organic carrier molecules in cosmetics and pharmaceuticals, support for catalysts. In the pharmaceutical industry, the clays are used as excipients, diluents, desiccants, emulsifiers, to mask undesirable flavors, isotonic agent such as charger and delivery of active substances. These characteristics have contributed to the expansion of the search for applications of clay minerals in the cosmetic industry. The aim of this study was to determine the elemental composition of clays from Campos Gerais, Minas Gerais, with a view to their applicability in the production of cosmetics. The elements As, Ba, Br, Ce, Cl, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th,U, Yb and Zn were determined by neutron activation analysis and radionuclide activity concentration of {sup 226}Ra, {sup 228} Ra, {sup 210}Pb and {sup 40}K were determined by gamma spectrometry. It was verified that the activity concentration of radionuclides was in the same concentration as the global average, indicating that these samples do not present a risk of increased radiation exposure. The concentration of most elements determined is less than or equal to the overall mean concentrations, indicated by the values of Continental Upper Crust. (author)

  8. Evaluation of methods for wax determination in crude oil; Avaliacao de metodos de determinacao de parafinas em petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Dias, Julio Cesar M.; Silva, Maria do Socorro A.J. da; Vasconcellos, Rosa C.U. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas; Tamanqueira, Juliana B. [Fundacao Gorceix, Ouro Preto, MG (Brazil)

    2008-07-01

    Determining the wax content of crude oil is of great importance for petroleum industry, especially for production, storage and transportation of crude oils. Many different methodologies of wax determining are available in the technical literature. However, the selection of the most suitable method must be in accordance with the aim of the analysis and observing the specificities of each technique. The purpose of this work was to determine the performance of different techniques of wax determining applied to characterization of precipitation properties of waxy compounds in crude oils. Twelve samples of crude oils proceeding from the main Brazilian oil producing sedimentary basins were selected for this study. These samples were analyzed by three important analytical techniques of wax determining: precipitation by cooled solvent; liquid chromatography with precipitation by cooled solvent; and liquid chromatography followed by gas chromatography. Differential scanning calorimetry data related to the wax crystallization in these oils were used as parameters of validation. The results obtained in this study indicate that the liquid chromatography followed by gas chromatography method has the best performance for wax determining in crude oils. (author)

  9. Evaluation of harmonic distortions using small scale computers; Avaliacao de distorcoes harmonicas utilizando-se computadores de pequeno porte

    Energy Technology Data Exchange (ETDEWEB)

    Paschoareli, Junior, Dionizio

    1991-12-01

    The emergence more and more constant of non-linear loads in the power systems, with the consequent distortion in the voltage wave forms and of current, turns necessary complementary analyses in the planning of the systems, in way the if understands and to minimize the effects caused by the harmonic distortions. Among the methods used in this analysis are the computational programs that determine the flow of harmonic current and the voltages distorted in the buses. The objective of this work is the optimization of a program developed for large computers, turning possible its utilization in microcomputers. Besides, several models of components and two electric systems have its answers to the presence of multiple frequencies of the fundamental (harmonic frequency) evaluated and the results of the simulations will be presented. It also accomplishes simulations that make possible the visualization of the distortions in the voltage wave forms of the buses. Finally, the work offers a global and qualitative vision of this phenomenon that has been reason increasing preoccupation for mainly among the responsible for the quality of the supplied energy.

  10. Gas geochemistry: a new technology to evaluate petroleum systems; Geoquimica de gases: uma nova tecnologia em avaliacao de sistemas petroliferos

    Energy Technology Data Exchange (ETDEWEB)

    Santos Neto, Eugenio Vaz dos [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas. Gerencia de Geoquimica]. E-mail: eugenioneto@petrobras.com.br

    2004-11-01

    In the last decade hydrocarbon gas geochemistry has significantly evolved especially regarding to the widespread use of GC-C-IRMS (Gas chromatography-combustion-ion ratio monitoring system) techniques that allowed accurate measurements of {delta}{sup 13} C in the C{sub 1}-C{sub 4} fraction. Also, due to the improvement of the sampling procedures, sample collection - relatively small amounts of gas samples at low pressure - has become easier, sample transportation has become safer - the risk of accidents has been reduced - and analysis has become faster. The 'state-of-the-art' of the use of gas geochemistry to study processes within petroleum systems is discussed in this paper. The discussion is mainly focused on the identification of the hydrocarbon gas origin (biogenesis versus thermo genesis, mixing) and hydrocarbon gas generation (primary versus secondary cracking), including the inference of the relative thermal evolution and possible secondary alterations caused by biodegradation, secondary migration and eventually leakage from petroleum accumulations. Brief comments were also made about the new technologies involving noble gases and their potential use as tracers of processes in petroleum systems. Additionally, the origin of non-hydrocarbon gases in petroleum accumulations is succinctly discussed, as well as their possible economic impacts. The use of gas geochemistry techniques has brought a significant improvement in the understanding of petroleum systems under exploration in Brazil and in other parts of the world. Besides, on-going research projects suggest that there is a great potential for technological advances, e.g., adding the hydrogen isotopic composition of hydrocarbons to the interpretations, and also integrating the available results to the isotopic variations of noble gases. (author)

  11. Life-cycle optimization model for distributed generation in buildings

    Science.gov (United States)

    Safaei, Amir

    O setor da construcao e responsavel por uma grande parte do consumo de energia e emissoes na Uniao Europeia. A Geracao Distribuida (GD) de energia, nomeadamente atraves de sistemas de cogeracao e tecnologias solares, representa um papel importante no futuro energetico deste setor. A otimizacao do funcionamento dos sistemas de cogeracao e uma tarefa complexa, devido as diversas variaveis em jogo, designadamente: os diferentes tipos de necessidades energeticas (eletricidade, aquecimento e arrefecimento), os precos dinamicos dos combustiveis (gas natural) e da eletricidade, e os custos fixos e variaveis dos diferentes sistemas de GD. Tal torna-se mais complexo considerando a natureza flutuante das tecnologias solares termicas e fotovoltaicas. Ao mesmo tempo, a liberalizacao do mercado da eletricidade permite exportar para a rede, a electricidade gerada localmente. Adicionalmente, a operacao estrategica de um sistema de GD deve atender aos quadros politicos nacionais, se tiver como objetivo beneficiar de tais regimes. Alem disso, considerando os elevados impactes ambientais do setor da construcao, qualquer avaliacao energetica de edificios rigorosa deve tambem integrar aspetos ambientais, utilizando uma abordagem de Ciclo de Vida (CV). Uma avaliacao de Ciclo de Vida (ACV) completa de um sistema de GD deve incluir as fases relativas a operacao e construcao do sistema, bem como os impactes associados a producao dos combustiveis. Foram analisadas as emissoes da producao de GN, as quais variam de acordo com a origem, tipo (convencional ou nao-convencional), e estado (na forma de GN Liquefeito (GNL) ou gas). Do mesmo modo, o impacte dos sistemas solares e afetado pela meteorologia e radiacao solar, de acordo com a sua localizacao geografica. Sendo assim, uma avaliacao adequada dos sistemas de GD exige um modelo de ACV adequado a localizacao geografica (Portugal), integrando tambem a producao de combustivel (GN), tendo em conta as suas diferentes fontes de abastecimento. O

  12. Evaluation of the contamination risk by {sup 241}AM from lightning rods disposed at uncontrolled garbage dump; Avaliacao da contaminacao provocada por para-raios radioativos de americio-241 descartados em lixoes

    Energy Technology Data Exchange (ETDEWEB)

    Marumo, Julio Takehiro

    2006-07-01

    Radioactive lightning rods were manufactured in Brazil until 1989, when the licenses for using radioactive sources in these products were lifted by the national nuclear authority. Since then, radioactive devices have been replaced by Franklin type one and collected as radioactive waste. However, only 23 percent of the estimated total number of installed rods was delivered to Brazilian Nuclear Commission (Comissao Nacional de Energia Nuclear - CNEN). This situation is of concern as there is a possibility of the rods being discarded as domestic waste, considering that in Brazil, 63.6 percent of the municipal solid waste is disposed at uncontrolled garbage dump, according to Instituto Brasileiro de Geografia e Estatistica (IBGE) in 2000. In addition, americium, the most common employed radionuclide, is classified as a high toxicity element, when ingested or inhaled. In the present study, it was performed migration experiments of Am-241 by lysimeter system in order to evaluate the risk of contamination caused by radioactive lightning rods disposed as a common solid waste. Sources removed from lightning rods were placed inside lysimeters filled with organic waste, collected at the restaurant of Instituto de Pesquisas Energeticas e Nucleares, IPEN-CNEN/SP, and the generated leachate was periodically analyzed to determine its characteristics such as pH, redox potential, solid content and concentration of the radioactive material. Microbial growth was also evaluated by counting the number of colony forming units. The equivalent dose to members of the public has been calculated considering the ingestion of drinking water, the most probable mode of exposure. The final result was about 145 times below the effective dose limit of 1 mSv.year-1 for members of the public, established by the International Commission on Radiological Protection (ICRP), demonstrating that the risk caused by lightning rods disposed at uncontrolled garbage dump is low. (author)

  13. Energy analysis of physic nut (Jatropha curcas L.) culture in dry land system: case study; Analise energetica da cultura de pinhao-manso (Jatropha curcas L.) em sistema de sequeiro: estudo de caso

    Energy Technology Data Exchange (ETDEWEB)

    Frigo, Michelle Sato [Universidade Estadual Paulista Julio de Mesquisa Filho (UNESP), Botucatu, SP (Brazil). Faculdade de Ciencias Agrarias. Pos-Graduacao em Agronomia], e-mail: msfrigo@fca.unesp.br; Bueno, Osmar de Carvalho; Esperancini, Maura Seiko Tsutsui [Universidade Estadual Paulista Julio de Mesquisa Filho (UNESP), Botucatu, SP (Brazil). Faculdade de Ciencias Agrarias. Dept. de Gestao e Tecnologia Agroindustrial], e-mails: osmar@fca.unesp.br; maura@fca.unesp.br

    2008-07-01

    Due to the gradual reduction of the oil reserves, alternatives come being studied and one of these are bio fuel being one of the potential cultures for its production would be the physic nut (Jatropha curcas L.). However, studies concerning this culture are scarce in international and national level, as much in what it says respect to how much energy the agronomic questions. The present work aimed to evaluate the index of energy efficiency for unit of area of agroecosystem physic nut under dry land system, in determined system. It was used primary data from NNE Minas Agro-Florestal Ltda., located at Janauba/MG, harvest season 2004/2005, therefore these are the oldest areas in production of the country oldest. In the construction of the structure of energy great expenses of agroecosystem in question, the gotten average values had been considered, inside of the studied areas of dry land. The results of the energy efficiency had been presented by the structure of energy great expenses, for type, source and form and for the rude energy. A rude energy of the equal product was observed the 319,30 MJ. ha-1, with a participation of 12,09% and 87,91% of the energies direct and indirect, respectively. It was concluded that agro ecosystem studied depended basically on industrial power plant, under the form of insecticides (39,71%). The energy balance was of 319.30 MJ. ha -1, the same value of the systems, because the non usage of recycled sources, being that due the same the factor the index of energy efficiency, was not possible of being calculated; with regard to cultural efficiency this was of 0.25. (author)

  14. Energy analysis in a swine production system with use of manure as bio fertilizer in pasture; Analise energetica em sistema de producao de suinos com aproveitamento dos dejetos como biofertilizante em pastagem

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Cassio V. [Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, MG (Brazil)], email: agro.cassio@hotmail.com; Campos, Alessandro T. [Universidade Federal de Lavras (DEG/UFLA), MG (Brazil). Dept. de Engenharia], email: campos@deg.ufla.br; Bueno, Osmar C [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas; Silva, Enilson B [Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, MG (Brazil). Dept. de Agronomia

    2009-07-01

    This work objective was to esteem the amount of energy employed in a complete cycle swine production and the energy balance of the system with utilization of the generated manure as bio fertilizer in pasture area, by using five cycles' average data, in a commercial farm in Diamantina municipal district - MG Brazil. The energy coefficient of each involved component was quantified in the productive process of finished swine, residues treatment and Brachiaria decumbens pasture production, in the form of ration, human labor, electric power, machines and equipment, fuel and lubricants, buildings, finished swine production and Brachiaria decumbens production. The average quantity of energy to produce 1 kg of alive swine was of 53.35 MJ. Of total employed energy in the system 76.03% (1,067,106.07 MJ) refers to the inputs and 23.97% (331,400 MJ) refers to the outputs, resulting in an energy efficiency coefficient of 0.31. The energy converted in swine for abate corresponded to 55.58% (184,200 MJ) of the outputs, while the pasture of Brachiaria decumbens reached a value of 44.42% (147,200 MJ). (author)

  15. Energy saving actions in the Italian industry : An analysis on the energetic and environmental consequences; Interventi di razionalizzazione energetica nell`industria italiana analisi delle ricadute energetico-ambientali

    Energy Technology Data Exchange (ETDEWEB)

    Di Franco, N [ENEA, Centro Ricerche Casaccia, Rome (Italy). Dip. Energia; Faberi, S [ISIS, Istituto di Studio per l` Informatica e i Sistemi, Rome (Italy)

    1996-08-01

    In this work the consequences of an energetic diagnoses campaign, lead by ENEA in about 600 small-medium Italian factories, have been analysed. The goal of the study is to determine the amount of global energy saving that the national industry can achieve, and, in addition, to specify the most efficacious actions for every productive field. Besides economic and energetic savings, positive environmental consequences owing to energetic diagnoses have been considered. Payback times, in spite of low present prices of energy, are interesting (about 2/3 years for the most important enterprises). Global energy savings have been calculated; they show an amount of about 6-8 Mtep per year, that corresponds to 20-27 % of total energetic consumptions of Italian industry.

  16. Influence of vegetation in the energetic balance outdoor urban spaces: Analysis and evaluation of its microclimatic effect; Influencia de la vegetacion en el balance energetico de los espacios exteriores urbanos: Analisis y evaluacion de sus efectos microclimaticos

    Energy Technology Data Exchange (ETDEWEB)

    Ochoa, J. Manuel [Universidad de Sonora, Hermosillo, Sonora (Mexico); Roset, Jaume [Universidad Politecnica de Cataluna, Barcelona (Spain)

    2000-07-01

    We present design guidelines to detect and to control the energy fluxes within and urban space. The main purpose is to create outdoor spaces with appropriate comfort conditions and to improve energy efficiency of adjacent buildings, by modifying its surrounding areas, approaching outdoor environment to the desired indoor conditions. The design guidelines as well as the concepts developed on this paper are explained in a language familiar to architects, urban planners and landscape designers, which have to take energetic and bioclimatic decisions up the first stage of a project process. A case study analysis of an urban scenery is presented, and conclusions about the advantage of using the vegetation as an instrument of microclimatic control are given. [Spanish] En este articulo se presentan pautas de diseno, que estan encaminadas, a saber detectar y en caso necesario reconducir, los flujos de energia dentro del espacio urbano. El proposito es crear espacios exteriores, con condiciones de confort ambiental, adecuadas a los usuarios de dicho espacio y por otro lado, mejorar la eficiencia energetica de los edificios, al modificar su entorno inmediato. Tanto las pautas de diseno, como los conceptos desarrollados en este trabajo, estan explicados con un discurso orientado al lenguaje de los profesionales dedicados al diseno urbano, arquitectonico y del paisaje, que son quienes deben hacer las consideraciones energeticas y bioclimaticas, desde las primeras etapas de un proyecto. Finalmente se presenta el ejemplo de un escenario urbano, donde se han realizado mediciones de los parametros climaticos, analizando cualitativa y cuantitativamente la influencia de la vegetacion y otros elementos del paisaje urbano sobre el microclima, y se dan conclusiones sobre la conveniencia de utilizar la vegetacion como un instrumento para el control microclimatico en los espacios exteriores urbanos.

  17. The use of MATLAB-SIMULINK for evaluation of thermal building behavior; O uso do MATLAB-SIMULINK para avaliacao do comportamento termico de ambientes

    Energy Technology Data Exchange (ETDEWEB)

    Mendes, Nathan; Oliveira, Gustavo H.C.; Araujo, Humberto X. de [Pontificia Universidade Catolica do Parana, Curitiba, PR (Brazil). Lab. de Sistemas Termicos]|[Pontificia Universidade Catolica do Parana, Curitiba, PR (Brazil). Lab. de Automacao e Sistemas]. E-mail: nmendes@ccet.pucpr.br; oliv@ ccet.pucpr.br; araujo@ ccet.pucpr.br

    2000-07-01

    We describe a mathematical model applied to both building thermal analysis and control systems design. We use a lumped approach to model the room air temperature and a multi-layer model for the building envelope. The capacitance model allows to study the transient analysis of room air temperature when it is submitted to sinusoidal variation of external air temperature, representing a case study for the city of Curitiba-PR, Brazil. To evaluate the building performance with thermal parameters, we use MATLAB/SIMULINK. In the results section, we show the influences of thermal capacitance on the building air temperature and energy consumption and the advantages of using MATLAB/SIMULINK in building thermal and energy analysis as well. (author)

  18. Assessing the quality of energy supplied by small renewable energy systems; Avaliacao da qualidade da energia fornecida por sistemas renovaveis isolados de pequeno porte

    Energy Technology Data Exchange (ETDEWEB)

    Galhardo, Marcos Andre Barros; Pinho, Joao Tavares [Universidade Federal do Para (UFPA), Belem, PA (Brazil). Grupo de Estudos e Desenvolvimento de Alternativas Energeticas], e-mail: galhardo@ufpa.br, E-mail: jtpinho@ufpa.br

    2004-07-01

    This paper makes an analysis of the power quality supplied by small renewable energy systems with energy storage in a battery bank and its DC/AC conversion by an inverter. It is shown that the power quality supplied by stand-alone renewable systems depends on the used inverter, specially of its voltage waveform, the load supplied and the voltage level in the battery bank, which has a direct influence on the value of the rms output voltage of the inverter. For these analysis, measurements are presented for typical loads used in these systems as illumination, TV, refrigerator, etc., and combinations of these loads, supplied by different waveforms. (author)

  19. Evaluation of X ray attenuation by means of radiographic images; Avaliacao da atenuacao da radiacao X por meio de imagens radiograficas

    Energy Technology Data Exchange (ETDEWEB)

    Barros, Frieda Saicla, E-mail: saicla@utfpr.edu.b [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil); Paredes, Ramon S.C., E-mail: ramon@ufpr.b [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil); Godoi, Walmor C., E-mail: walmor.godoi@gmail.co [Faculdade de Tecnologia Camoes (FATEC), Curitiba, PR (Brazil); Souza, Gabriel Pinto de [Universidade Estadual Paulista (UNESP), SP (Brazil)

    2011-07-01

    This paper's main goal is to adopt a qualitative methodology to evaluate the attenuation of x-radiation through X-ray images in polymeric materials plus residual lead. To determinate the images it was initially used an experimental setup at the Laboratory for Materials Diagnostics LACTEC. These results correspond to a more qualitative analysis, even with quantitative answers. Through analysis of radiographic images we can measure the intensity of radiation that goes through the plate, making possible to establish a relationship between the attenuation coefficient and the thickness of the material. (author)

  20. Economic and financial evaluation of the wind power project in Northeast region, Brazil; Avaliacao economico-financeira de projeto de central eolica na regiao nordeste

    Energy Technology Data Exchange (ETDEWEB)

    Rocha, Paulo Glicio da; Lima, Maria Angela de Queiroz; Melo Junior, Adalberto de Bastos [Companhia Hidro Eletrica do Sao Francisco (DFPL/CHESF), Recife, PE (Brazil). Div. de Planejamento Economico-Financeiro], Emails: paulogr@chesf.gov.br, angelq@chesf.gov.br, adalbert@chesf.gov.br; Bezerra, Pedro; Bittencourt, Rogerio [Companhia Hidro Eletrica do Sao Francisco (DEFA/CHESF), Recife, PE (Brazil). Div. de Projetos de Fontes Alternativas], E-mails: pbezerra@chesf.gov.br, rogeriob@chesf.gov.br

    2000-07-01

    This work deals with the analysis of economic and financial feasibility of using wind power in the Northeast region for electric power production, considering the new electricity sector model. The case study presented here refers to the design of a 50 MW Wind Farm in the region, based on preliminary data from wind collected in the period from 1993 to 1995. Some programs were used to evaluate this project: ALWIN, which estimates the potential for wind energy production; NEWAVE for determination operating marginal costs and generation plants values and ANAFIN, for economic and financial evaluation of the project, using scenarios, through the deterministic and probabilistic analysis.

  1. Projection of energy demand of the agricultural sector of Mato Grosso using the model of structural decomposition; Projecao da demanda energetica do setor agropecuario de Mato Grosso utilizando o modelo de decomposicao estrutural

    Energy Technology Data Exchange (ETDEWEB)

    Dorileo, Ivo Leandro [Universidade Federal do Mato Grosso (NIEPE/UFMT), Cuiaba, MT (Brazil). Nucleo Interdisciplinar de Estudos em Planejamento Energetico; Bajay, Sergio Valdir [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico

    2006-07-01

    Agriculture in Mato Grosso is, currently, the main responsible for the high economic growth of the state's economy, sustaining population in rural areas and pushing industrialization. Around 30% of the state's GDP is provided by this sector. A retrospective analysis of the evolution of the economic and energy consumption related parameters involved in the structural decomposition forecasting model precedes, in this paper, a prospective analysis, up to the year 2012, using this model, of energy consumption in this sector in the State. The energy demand forecasts follow a structure of macro economic scenarios which correspond to several possibilities of the local GDP growth. (author)

  2. Evaluation of peach palm (Bactris gasipaes Kunth) processed by radiation; Avaliacao do palmito pupunha (Bactris gasipaes Kunth) processado por radiacao ionizante

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Priscila Vieira da

    2009-07-01

    The peach palm can be obtained from several species of palms, but the peach palm has attracted great interest by producers, as has characteristics of precocity, rusticity and tillering, producing a palm-quality differentiating it from other palmettos for their sweet flavor and yellowish . The food irradiation has been used as a treatment to ensure microbiological food safety of products to avoid infection. Its use combined with minimal processing could increase the safety and quality of minimally processed vegetables. We aimed at evaluating the effect of gamma radiation and electron beams to control bacteria; assess the physical characteristics through analysis of color and texture in peach palm in natura minimally processed and subjected to ionizing radiation stored at 8 deg C as well as evaluating the sensory characteristics. The results in the microbiological analysis showed that ionizing radiation promotes reduction of microbial load in both treatments. In the analysis of color we can conclude that among all the treatments the sample irradiated with 1.5 kGy showed more differences when compared with the other samples. Observing texture characteristics we could conclude that irradiation changed the texture of the palm, unlike the treatment by electron beams that showed no difference between samples. For the sensory analysis, the gamma radiation with dose of 1.5 kGy, induced changes in sensory properties to the attributes and overall appearance. The dose of 1 kGy caused no significant difference, so a recommended dose for the irradiation of the studied product. (author)

  3. Technique applied in the evaluation of the UFCC reactor at Refinaria Alberto Pasqualini (REFAP), PETROBRAS; Tecnicas utilizadas na avaliacao do reator da UFCC da REFAP

    Energy Technology Data Exchange (ETDEWEB)

    Cascaes, Ronesio da Silva [PETROBRAS (Brazil) Refinaria Alberto Pasqualini

    1994-01-01

    Main problems found in the maintenance of the Fluidized Catalytic Cracking (FCC) unity, searches of metal alteration properties, metallographic evaluations, failures and micro-structures alterations are presented. Micrographic analysis of the structural samples, the methodology to detect the failures and physical and chemical essays utilized in the inspection are also reported 13 refs., 64 figs., 1 tab.

  4. Evaluation of peach palm (Bactris gasipaes Kunth) processed by radiation;Avaliacao do palmito pupunha (Bactris gasipaes Kunth) processado por radiacao ionizante

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Priscila Vieira da

    2009-07-01

    The peach palm can be obtained from several species of palms, but the peach palm has attracted great interest by producers, as has characteristics of precocity, rusticity and tillering, producing a palm-quality differentiating it from other palmettos for their sweet flavor and yellowish . The food irradiation has been used as a treatment to ensure microbiological food safety of products to avoid infection. Its use combined with minimal processing could increase the safety and quality of minimally processed vegetables. We aimed at evaluating the effect of gamma radiation and electron beams to control bacteria; assess the physical characteristics through analysis of color and texture in peach palm in natura minimally processed and subjected to ionizing radiation stored at 8 deg C as well as evaluating the sensory characteristics. The results in the microbiological analysis showed that ionizing radiation promotes reduction of microbial load in both treatments. In the analysis of color we can conclude that among all the treatments the sample irradiated with 1.5 kGy showed more differences when compared with the other samples. Observing texture characteristics we could conclude that irradiation changed the texture of the palm, unlike the treatment by electron beams that showed no difference between samples. For the sensory analysis, the gamma radiation with dose of 1.5 kGy, induced changes in sensory properties to the attributes and overall appearance. The dose of 1 kGy caused no significant difference, so a recommended dose for the irradiation of the studied product. (author)

  5. Mechanisms of energetic efficiency in the transportation sector: environmental impacts and reflections in final energy consumption: PNE 2030; Mecanismos de eficiencia energetica no setor de transportes: impactos ambientais e os reflexos no consumo final de energia: PNE 2030

    Energy Technology Data Exchange (ETDEWEB)

    Berni, Mauro Donizeti [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico], email: mauro_berni@nipeunicamp.org.br; Dorileo, Ivo Leandro [Universidade Federal do Mato Grosso (NIEPE/UFMT), Cuiaba, MT (Brazil). Nucleo Interdisciplinar de Estudos em Planejamento Energetico; Perez, Andrea Juliana Ortiz [Universidade Estadual de Campinas (DE/FEM/UNICAMP), SP (Brazil). Dept. de Energia. Fac. de Engenharia Mecanica; Paccola, Jose Angelo; Silva Junior, Herculano Xavier da; Bernardes, Cyro Barbosa [MCPAR Engenharia, Campinas, SP (Brazil)

    2010-07-01

    This work presents an energy efficiency mechanisms analysis in the Brazilian transport sector. Significant energy savings can be made in this sector and rely on urgent widespread implementation of mechanisms. The experience of the developed countries serves as base for the critical evaluation of the Brazilian situation, considering the current technological period, the investments and initiatives to reduce CO{sub 2} emissions. (author)

  6. Exergy and thermoeconomic evaluation of hydrogen production from natural gas; Avaliacao exergetica e termo-economica da producao de hidrogenio a partir do gas natural

    Energy Technology Data Exchange (ETDEWEB)

    Cruz, Flavio Eduardo da [PROMON Engenharia Ltda., Sao Paulo, SP (Brazil); Oliveira Junior, Silvio de [Universidade de Sao Paulo (USP), SP (Brazil). Escola Politecnica

    2008-07-01

    Some specific processes are required to obtain pure hydrogen and the most usual one is the natural gas reforming, where natural gas reacts with superheated steam producing H{sub 2}, CO, CO{sub 2} and H{sub 2}O. This paper presents exergy and thermoeconomic analysis of a complete hydrogen production unit of a petroleum refinery. The hydrogen production unit analysed in this paper has to supply 550,000 Nm{sup 3} of hydrogen per day to purify diesel oil. Based on a synthesis plant of the hydrogen production unit, the exergy efficiency of each component and of the overall plant are calculated. The hydrogen production cost is determined by means of a thermoeconomic analysis in which the equality cost partition method is employed, including capital and operational costs, in order to determine the production cost of hydrogen and other products of the plant.(author)

  7. Sensory evaluation of black beans submitted to gamma radiation from Cobalt-60; Avaliacao sensorial de feijao preto submetido a radiacao de Cobalto-60

    Energy Technology Data Exchange (ETDEWEB)

    Moura, Neila Camargo de; Canniatti-Brazaca, Solange Guidolin; Spoto, Marta Helena Fillet, E-mail: sgcbraza@esalq.usp.b [Escola Superior de Agricultura Luiz de Queiroz (ESALQ/USP), Piracicaba, SP (Brazil). Dept. de Agroindustria, Alimentos e Nutricao; Arthur, Valter [Centro de Energia Nuclear na Agricultura (CENA/USP), Piracicaba, SP (Brazil). Secao de Entomologia e Irradiacao de Alimentos

    2005-04-15

    The objective of this research was to evaluate the sensory aspects of black beans submitted to gamma radiation from {sup 60}Co. The study involved eight panelists, between 17 to 23 years old, who were selected and trained for the descriptive analysis of appearance, aroma, flavor and texture. The panelists analyzed alterations of appearance, aroma, flavor and texture of non-irradiated and irradiated black beans with doses 2, 4, 6, 8 and 10kGy. The results were analyzed by test F, ANOVA and the Tukey test (5%), with the use of computers and the sensory analysis software Compusense Five and SAS. The results showed that irradiated samples decreased the bitter flavor, accentuated color and brightness and samples non-irradiated dry texture. The radiation treatment is a good method for conservation of black beans in doses evaluated in this study.(author)

  8. Evaluation of ethanol aged PVDF: diffusion, crystallinity and dynamic mechanical thermal properties; Avaliacao do PVDF envelhecido em etanol combustivel: difusao, cristalinidade e propriedades termicas dinamico-mecanicas

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Agmar J.J.; Costa, Marysilvia F., E-mail: agmar@metalmat.ufrj.br [Coordenacao dos Programas de Pos-Graduacao em Engenharia (COPPE/UFRJ), Rio de Janeiro, RJ (Brazil)

    2015-07-01

    This work discuss firstly the effect of the ethanol fuel absorption by PVDF at 60°C through mass variation tests. A Fickian character was observed for the ethanol absorption kinetics of the aged PVDF at 60°C. In the second step, the dynamic mechanical thermal properties (E’, E’, E” and tan δ) of the PVDF were evaluated through dynamic mechanical thermal analysis (DMTA). The chemical structure of the materials was analyzed by X-ray diffraction analysis (XRD), and significant changes in the degree of crystallinity were verified after the aging. However, DMTA results showed a reduction in the storage modulus (E') of the aged PVDF, which was associated to diffusion of ethanol and swelling of the PVDF, which generated a prevailing plasticizing effect and led to reduction of its structural stiffness. (author)

  9. Preliminary results of the evaluation of biomass use as energy sources; Resultados preliminares da avaliacao do uso de biomassas como fontes de energia

    Energy Technology Data Exchange (ETDEWEB)

    Rocha Ferreira, Leo da; Tourinho, Octavio A.F. [Instituto de Planejamento Economico e Social (IPES), Rio de Janeiro, RJ (Brazil). Inst. de Pesquisas

    1985-12-31

    This article discusses the preliminary results of the BIOMASSA model of IPEA with emphasis on three aspects: temporal and spatial crop mix patterns along the analysis horizon; evaluation of the social cost of alcohol fuel ; and the impact of alcohol production on the balance of payments. It concludes that the PROALCOOL increases domestic costs, but the impact on the balance of payments is positive and substantial. (author). 8 tabs

  10. Assessment of low density polyethylene characteristics for hazardous waste immobilization; Avaliacao das caracteristicas do polietileno de baixa densidade visando a imobilizacao de rejeitos perigosos

    Energy Technology Data Exchange (ETDEWEB)

    Cota, Stela; Carvalho, Larissa Lara de; Pacheco, Graziella Rajao Cota; Oliveira, Tania Valeria de; Senne Junior, Murillo; Pacheco, Raquel R. Janot [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, MG (Brazil)]. E-mail: sdsc@cdtn.br

    2005-07-01

    This paper analyses the properties of low density polyethylene (LDPE) to allow choosing the more suitable to be used as matrices for radioactive and hazardous waste immobilization. Four virgin and recycled LDPE, with different melting index, were evaluated by extrusion and compressive strength tests. A preliminary immobilization test has been carried out using a simulated waste and one of the evaluated polymers and the homogeneity of the final waste product was determinate by the analysis of the material density. (author)

  11. Energy efficiency through design and sustainable construction of houses located in the Mexican Caribbean; Eficiencia Energetica a traves del diseno y construccion sostenible de viviendas ubicadas en el Caribe Mexicano

    Energy Technology Data Exchange (ETDEWEB)

    Bojorquez, I. B.; Perez, M. S.; Aguilar, J. A.

    2008-07-01

    Public policies focused to the Environment conservation and, low power consumption construction systems, are some of the Housing Sustainable Construction bases in an urban setting. This work approach to the analysis of the correlation power efficiency-design in the social housing located in the tropical-humid climate characteristic of the Mexican Caribbean, like starting point to define the recommendations of a Sustainable construction in this sector. the legal aspects were considered on sustainable construction and some experiences of investigation in the subject were reviewed. Also an exercise for the calculation of thermal gain was made as it bases of this analysis. This exercise is part of the project in process, that will define the recommendations of design for energy saving in the social housing. (Author)

  12. Applications mechanisms of energetic efficiency in energy-intensive industries segments in Brazil: opportunities for current technological structures; Aplicacoes de mecanismos de eficiencia energetica em segmentos industriais energo-intensivos brasileiros: oportunidades relativas as atuais estruturas tecnologicas

    Energy Technology Data Exchange (ETDEWEB)

    Dorileo, Ivo Leandro [Universidade Federal do Mato Grosso (NIEPE/UFMT), Cuiaba, MT (Brazil). Nucleo Interdisciplinar de Estudos em Planejamento; Berni, Mauro Donizeti [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico; Paccola, Jose Angelo; Silva Junior, Herculano Xavier da; Bernardes, Cyro Barbosa [MCPAR Engenharia, Campinas, SP (Brazil)

    2010-07-01

    This work presents energy efficiency mechanisms analysis in the Brazilian industrial sector. Significant energy savings can be made in this sector and rely on urgent widespread implementation of mechanisms. The experience of the developed countries is demonstrated and serves as base for the critical evaluation of the Brazilian situation, considering the current technological period, the investments and economic perspectives in industrial segments of pulp and paper, iron and steel and non-ferrous metals. (author)

  13. Systematic approach for assessment of accident risks in chemical and nuclear processing; Abordagem sistematica para avaliacao de riscos de acidentes em instalacoes de processamento quimico e nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Senne, Junior, Murillo

    2003-07-15

    The industrial accidents which occurred in the last years, particularly in the 80's, contributed a significant way to draw the attention of the government, industry and the society as a whole to the mechanisms for preventing events that could affect people's safety and the environment quality. Techniques and methods extensively used the nuclear, aeronautic and war industries so far were adapted to performing analysis and evaluation of the risks associated to other industrial activities, especially in the petroleum, chemistry and petrochemical areas. The risk analysis in industrial facilities is carried out through the evaluation of the probability or frequency of the accidents and their consequences. However, no systematized methodology that could supply the tools for identifying possible accidents likely to take place in an installation is available in the literature. Neither existing are methodologies for the identification of the models for evaluation of the accidents' consequences nor for the selection of the available techniques for qualitative or quantitative analysis of the possibility of occurrence of the accident being focused. The objective of this work is to develop and implement a methodology for identification of the risks of accidents in chemical and nuclear processing facilities as well as for the evaluation of their consequences on persons. For the development of the methodology, the main possible accidents that could occur in such installations were identified and the qualitative and quantitative techniques available for the identification of the risks and for the evaluation of the consequences of each identified accidents were selected. The use of the methodology was illustrated by applying it in two case examples adapted from the literature, involving accidents with inflammable, explosives, and radioactive materials. The computer code MRA - Methodology for Risk Assessment was developed using DELPHI, version 5.0, with the purpose of systematizing

  14. Radiographic and tomographic study of the elbow joint in dogs; Avaliacao morfologica e morfometrica da articulacao umerorradioulnar em caes atraves de exames radiograficos e por tomografia computadorizada

    Energy Technology Data Exchange (ETDEWEB)

    Sendyk-Grunkraut, Alessandra; Martin, Claudia M.; Souza, Alexandre N.A.; Patricio, Geni Cristina F.; Lorigados, Carla A.B.; Matera, Julia M.; Fonseca-Pinto, Ana C.B.C., E-mail: anacarol@usp.br [Universidade de Sao Paulo (FMVZ/USP), SP (Brazil). Faculdade de Medicina Veterinaria e Zootecnia

    2017-02-15

    Elbow dysplasia disease includes an united anconeal process, fragmented medial coronoid process, osteochondrosis of humeral trochlea, articular incongruity and degenerative joint disease. The aim of this study was to present detailed morphologic and morphometric aspects of the elbow joint in dog in clinical and correlate with radiographic and tomographic (CT) exam. Inter-observer variation for articular incongruity measurements by CT, comparative analysis in the radiographic exam, angle in ulnar notch and its comparative analysis between radiographic and tomographic agreement examination in 44 elbow of dogs with different ages were evaluated. The statistics analyses included the kappa coefficient and interclass correlation and Fischer's test and McNemar's test. It was evidenced that individual performance of each radiographic incidence had poor agreement with the tomographic exam, suggesting that the accomplishment of more than two radiograph views are needed. There was no agreement between the three evaluators in the ulnar notch angle at radiographic and tomographic exams. However, there was good/moderate agreement for articular incongruity measurement in the sagittal plane between evaluators. It was possible to conclude that none of the five radiographic incidences was better than the others for radiographic analysis because each incidence had a better identification of a particular elbow compartment; measurements at the tomographic exam to evaluate radioulnar incongruity had no reproductiveness in the frontal plane, but in sagittal plan had a good/moderate agreement between observers and the angle in ulnar notch presented no repeatability at radiographic exam and no reproductiveness at tomographic exam. (author)

  15. Systematic approach for assessment of accident risks in chemical and nuclear processing; Abordagem sistematica para avaliacao de riscos de acidentes em instalacoes de processamento quimico e nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Senne Junior, Murillo

    2003-07-15

    The industrial accidents which occurred in the last years, particularly in the 80's, contributed a significant way to draw the attention of the government, industry and the society as a whole to the mechanisms for preventing events that could affect people's safety and the environment quality. Techniques and methods extensively used the nuclear, aeronautic and war industries so far were adapted to performing analysis and evaluation of the risks associated to other industrial activities, especially in the petroleum, chemistry and petrochemical areas. The risk analysis in industrial facilities is carried out through the evaluation of the probability or frequency of the accidents and their consequences. However, no systematized methodology that could supply the tools for identifying possible accidents likely to take place in an installation is available in the literature. Neither existing are methodologies for the identification of the models for evaluation of the accidents' consequences nor for the selection of the available techniques for qualitative or quantitative analysis of the possibility of occurrence of the accident being focused. The objective of this work is to develop and implement a methodology for identification of the risks of accidents in chemical and nuclear processing facilities as well as for the evaluation of their consequences on persons. For the development of the methodology, the main possible accidents that could occur in such installations were identified and the qualitative and quantitative techniques available for the identification of the risks and for the evaluation of the consequences of each identified accidents were selected. The use of the methodology was illustrated by applying it in two case examples adapted from the literature, involving accidents with inflammable, explosives, and radioactive materials. The computer code MRA - Methodology for Risk Assessment was developed using DELPHI, version 5.0, with the purpose of

  16. Effects of blue light irradiation on dental enamel remineralization in vitro; Avaliacao dos efeitos promovidos pela radiacao azul na remineralizacao do esmalte dentario in vitro

    Energy Technology Data Exchange (ETDEWEB)

    Kato, Ilka Tiemy

    2009-07-01

    This study aimed to investigate the effects of blue radiation on dental enamel remineralization. In addition, a methodology of analysis was developed to evaluate alterations of enamel mineral content by optical coherence tomography. Artificial lesions were formed in bovine dental enamel slabs by immersing the samples in under saturated acetate buffer (2 mL/mm{sup 2} e 6.25 mL/mm{sup 2}). The lesions were irradiated with blue LED (l=455{+-}20nm), with radiant power of 110 mW, irradiance of 1.4 W/cm{sup 2}, radiant exposure of 13.8 J/{sup c}m2 and exposure time of 10 s. Remineralization was induced by pH-cycling model during 8 days. Cross-sectional hardness and optical coherence tomography (OCT) were used to assess mineral changes after remineralization. Hardness data showed that non-irradiated enamel lesions presented higher mineral content than irradiated ones and this difference was more evident in lesions formed in higher solution volume. The analysis of OCT signal also demonstrated that the mineral content of non-irradiated group was higher than in irradiated one; however, no significant difference was observed. Furthermore, significant differences in OCT sign were detected between sound and demineralized enamel. Based on the results obtained in the present study it can be concluded that blue radiation caused an inhibition of enamel remineralization. The methodology adopted for OCT analysis allowed the quantification of enamel mineral loss; however, the remineralization process could not be evaluated by this technique. (author)

  17. Quality evaluation of Argentina onion irradiated, transported and stored; Avaliacao da qualidade da cebola argentina irradiada, transportada e armazenada no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Walder, J M.M.; Domarco, R E; Spoto, M H.F.; Blumer, L [Centro de Energia Nuclear na Agricultura (CENA), Piracicaba, SP (Brazil); Curzio, O A; Croci, C A [Universidad Nacional del Sur, Bahia Blanca (Argentina). Lab. de Radioisotopos

    1996-12-31

    Onion bulbs of the Valenciana Sintetica 14 variety from Argentina were irradiated with a dose of 60 Gy gamma rays at 30-40 days after harvest. Treated and control lots (40 bags of 20 Kg each) were send by road to Piracicaba, SP, Brazil, and stored up to 180 days in a warehouse at 20-28{sup 0} C and relative humidity ranging from 50 to 100%. Monthly quality control was done by physical and sensorial analysis. Radiation treatment reduced the weight loss of the bulbs and increased the percentage of marketable bulbs without affecting its sensorial properties. (author). 4 refs, 8 tabs.

  18. Energy efficiency and bioclimatic architecture - the case of the Center of Energy and Sustainable Technologies; Eficiencia energetica e arquitetura bioclimatica - o caso do Centro de Energia e Tecnologias Sustentaveis

    Energy Technology Data Exchange (ETDEWEB)

    Stilpen, Daniel Vasconcellos de Sousa

    2007-07-15

    This thesis analyzes the energy efficiency of a single-family dwelling, constructed in Ilha do Fundao, Rio de Janeiro. It first describes the Center of Energy and Sustainable Technologies and also evaluates the thermal behavior of the non-conventional materials used in its construction. After that, a thermal comfort experiment, in accordance with the thermal comfort theory proposed by Fanger, is presented. Then, the experimental data analysis, from more than 300 (three hundred) interviews, is shown. Finally, some bioclimatic suggestions for modifications in the architecture project of the dwelling are presented. All solutions represent significant increases in the human thermal comfort responses, with low implementation cost.

  19. Sensorial analysis evaluation in cereal bars preserved by ionizing radiation processing

    International Nuclear Information System (INIS)

    Villavicencio, A.L.C.H.; Araujo, M.M.; Fanaro, G.B.; Rela, P.R.; Mancini-Filho, J.

    2007-01-01

    Gamma-rays utilized as a food-processing treatment to eliminate insect contamination is well established in food industries. Recent troubles in Brazilian cereal bars commercialization require a special consumer's attention because some products were contaminated by insects. To solve the problem, food-irradiation treatment was utilized as a safe and effective solution. The final product was free of insect contamination. The aim of this study was to determine the best radiation dose processing utilized to disinfestations and detect some change on sensorial characteristic by sensorial analysis in cereal bars. In this study, three different kinds of cereal bars were purchased in Sao Paulo (Brazil) in supermarkets and irradiated with 1.0, 2.0 and 3.0 kGy at 'Instituto de Pesquisas Energeticas e Nucleares' (IPEN-CNEN/SP). The samples were treated with ionizing radiation using a 60 Co gamma-ray facility (Gammacell 220, A.E.C.L.). That radiation doses were used successfully as an anti-insect treatment in the cereal bars, since in some food industries doses up to 3.0 kGy are used to guarantee at least a dose of 1.0 kGy in internal cereal bars package. Sensorial analysis was necessary since cereal bars contain ingredients very sensitive to ionizing radiation process

  20. Selection and ordering of contingencies for evaluation of voltage safety conditions; Selecao e ordenacao de contingencias para avaliacao das condicoes de seguranca de tensao

    Energy Technology Data Exchange (ETDEWEB)

    Moura, Ricardo Drumond de

    2002-10-01

    Although the use of compensation of reactive power allows a higher loading in the electric system, it leads it to work closer to voltage collapse situations. Therefore it's necessary to assess the behavior of the system regarding to this phenomena in the occurrence of the contingencies. In this work some existing methods are studied to check the capacity of ranking the contingencies that might affect the system, and how these methods rank them by severity and select those which are more damaging. The methods are studied having as the main focus the real-time operation. This work proposes a method which is able to rank and select a list of probable contingencies, having as a basis, nodal indexes of voltage security conditions assessment. These indexes are based on MV A margin to the maximum loading, indicate the region of operation on V x P,Q curve, and the relative importance among buses. The sensitivity index which indicates the reduction of the power margin before a contingency, is studied in detail. Besides the nodal analysis, it is proposed a form of a systemic analysis which is able to rank and select the contingencies according to their influence upon all electrical system. (author)

  1. Geographic information systems as a tool for environmental evaluation of hydropower potential; Sistemas de informacoes geograficas como ferramenta para avaliacao ambiental de potenciais hidreletricos

    Energy Technology Data Exchange (ETDEWEB)

    Dzedzej, Maira; Correa, Fabio; Malta, Joao [IX Consultoria e Representacoes Ltda, Itajuba, MG (Brazil); Flauzino, Barbara Karoline [IX Consultoria e Representacoes Ltda, Itajuba, MG (Brazil); Universidade Federal de Itajuba (UNIFEI), MG (Brazil); Santos, Afonso Henriques Moreira [MS Consultoria Ltda, Itajuba, MG (Brazil); Universidade Federal de Itajuba (UNIFEI), MG (Brazil)

    2010-07-01

    The hydropower plants are responsible for much of the energy generated in the country, there is also a large hydro potential in Brazilian rivers. This form of power generation is considered renewable and fits into the concept of sustainable development, however, social and environmental impacts from the implementation of hydropower projects are known and widely discussed, especially when it comes to large plants. In this context, study the environmental analysis of potential hydropower was incorporated at various stages of the studies implementation, in order to, identify environmental factors and that will restrict or impede construction, to obtain the best option for the environment, evaluate the role and of social and environmental impacts, contribute to improving the design and functionality of the enterprises in order to reduce overall costs, minimize conflicts and assist in preserving the environment. To fulfill these functions to a satisfactory and reliable level, it the study has increasingly used the techniques, tools and applications of Geographic Information Systems in the process of environmental assessment, since they provide procurement, integration, visualization and data analysis of natural resources, its uses and protection, offering greater security and speed in decision making. This paper presents some applications of GIS in environmental assessment processes, developed mainly in the steps of estimating hydropower potential, hydropower inventory, basic design and environmental licensing. (author)

  2. Atmospheric emissions as a tool in evaluation of sustainability research in oil industry; Emissao atmosferica como uma ferramenta na avaliacao do desenvolvimento sustentavel na industria do petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Zanella, Nicolas P.; Baich, Paulo R.M.; Machado, Maria I. [Fundacao Universidade do Rio Grande (FURG), RS (Brazil)

    2008-07-01

    This work is directly to analysis of atmosphere surrounding Ipiranga Refinery; witch is located in the city of Rio Grande, in estate of Rio Grande do Sul. The refinery is surrounded by neighborhood, witch are impacted by atmospheric emissions of refinery. The objective of this work is correlating the refinery to the inhabitants that lives near the refinery, using an environmental sustainability index. This work will be achieve by analysis of Polycyclic Aromatic Hydrocarbons (PAH) bounded in particulate matter with diameter of 100 {mu}m (PTS), the acquisition of health data on the city hospitals and correlation of this data with PAH concentrations in Particulate Matter. The Samples were obtain by FEPAM, witch have three samples sites in the center of city. The samples was obtained by a High Volume Sampler equipped with quartz fiber filters. The meteorological data important to this work, like wind direction and speed, will be obtain in Meteorological Station on FURG. The results expect to this work are the quantification of PAH bounded with PM-100 and the quantification of PAH emitted by Ipiranga Refinery. And possibly, to correlate this data to made the Environmental Sustainability index. (author)

  3. Evaluation of the morphological alteration of the root surface radiated with a diode laser; Avaliacao da alteracao morfologica da superficie cimentaria irradiada com laser de diodo

    Energy Technology Data Exchange (ETDEWEB)

    Gulin, Mauricio

    2003-07-01

    The diode laser has been studied for periodontal therapy, as much for removal of calculus as for microbial reduction of periodontal pockets, as well as the visible analgesic effects and biomodulation capacity. For this reason the purpose of this study was to evaluate the morphological alteration of the root surface after radiation with the diode laser, 808 nm through analysis by scanning electron microscopy (SEM). Besides this, to verify the temperature variations caused during the radiation, a thermometer put into the dentinal wall of the root canal was used. In all, 18 teeth were used, 15 of which for the SEM study, and the other 3 were used to temperature variation analysis. The 25 samples were scraped on the root surface and planed with manual instruments. The other 5 were not subjected to any type of treatment. This, 6 groups of 5 samples each were formed. Control Group C whose samples had not received any treatment; Control Group C 1 was only scraped and polished conventionally with Hu-Friedy Gracey curettes 5 and 6; the other samples groups L1, L2, L3, L4 were radiated by diode laser using parameters of power 1,0 W; 1,2 W; 1,4 W; and 1,6 W respectively, 2 times for 10 seconds with 20 seconds intervals between each radiation in continuous mode. The results with relation to the increase of temperature in the interior of the root canal demonstrated that there was an increase of more than 5 degree Celsius. The results of the scanning electron microscope analysis of Control Group C demonstrated great irregularity and ridges on the root surface, with the presence of a dentine layer. Control Group C1 presented a similar aspect to Group L 1's, smoother and more homogeneous surface. Groups L2, L3, and L4 presented scratches alternating with smoother areas showing that fiber contacted the surface of the sample. The results reconfirmed the necessity of further studies using diode laser, with a beam of light emitted in an interrupted mode to improve the control of the

  4. Evaluation of the morphological alteration of the root surface radiated with a diode laser; Avaliacao da alteracao morfologica da superficie cimentaria irradiada com laser de diodo

    Energy Technology Data Exchange (ETDEWEB)

    Gulin, Mauricio

    2003-07-01

    The diode laser has been studied for periodontal therapy, as much for removal of calculus as for microbial reduction of periodontal pockets, as well as the visible analgesic effects and biomodulation capacity. For this reason the purpose of this study was to evaluate the morphological alteration of the root surface after radiation with the diode laser, 808 nm through analysis by scanning electron microscopy (SEM). Besides this, to verify the temperature variations caused during the radiation, a thermometer put into the dentinal wall of the root canal was used. In all, 18 teeth were used, 15 of which for the SEM study, and the other 3 were used to temperature variation analysis. The 25 samples were scraped on the root surface and planed with manual instruments. The other 5 were not subjected to any type of treatment. This, 6 groups of 5 samples each were formed. Control Group C whose samples had not received any treatment; Control Group C 1 was only scraped and polished conventionally with Hu-Friedy Gracey curettes 5 and 6; the other samples groups L1, L2, L3, L4 were radiated by diode laser using parameters of power 1,0 W; 1,2 W; 1,4 W; and 1,6 W respectively, 2 times for 10 seconds with 20 seconds intervals between each radiation in continuous mode. The results with relation to the increase of temperature in the interior of the root canal demonstrated that there was an increase of more than 5 degree Celsius. The results of the scanning electron microscope analysis of Control Group C demonstrated great irregularity and ridges on the root surface, with the presence of a dentine layer. Control Group C1 presented a similar aspect to Group L 1's, smoother and more homogeneous surface. Groups L2, L3, and L4 presented scratches alternating with smoother areas showing that fiber contacted the surface of the sample. The results reconfirmed the necessity of further studies using diode laser, with a beam of light emitted in an interrupted mode to improve the control of

  5. Ergonomics in the licensing and evaluation of nuclear reactors control room; A ergonomia no licenciamento e na avaliacao de salas de controle de reatores nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Isaac Jose Antonio Luquetti dos [Instituto de Engenharia Nuclear (IEN), Rio de Janeiro, RJ (Brazil); Vidal, Mario Cesar Rodriguez [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia. Programa de Engenharia de Producao

    2002-07-01

    A nuclear control room is a complex system that controls a thermodynamic process used to produce electrical energy. The operators interact with the control room through interfaces that have significant implications to nuclear plant safety and influence the operator activity. The TMI (Three Mile Island) accident demonstrated that only the anthropometric aspects were not enough for an adequate nuclear control room design. The studies showed that the accident was aggravated because the designers had not considered adequately human factor aspects. After TMI accident, the designers introduce in the nuclear control room development only human factors standards and human factors guidelines. The ergonomics approaches was not considered. Our objective is introduce in nuclear control room design and nuclear control room evaluation, a methodology that. includes human factors standards, human factors guidelines and ergonomic approaches, the operator activity analysis. (author)

  6. Evaluation of radon measuring technique using passive detector activated carbon; Avaliacao da tecnica de medicao do radonio utilizando detector passivo com carvao ativado

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Paulo Roberto Rocha; Lessa, Edmilson de Lima; Oliveira, Evaldo Paulo de, E-mail: epoliveira@aluno.ird.gov.br [Instituto de Radioprotecao e Dosimetria, (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil). Div. de Radioprotecao Ambiental e Ocupacional

    2014-07-01

    This study aims to evaluate the efficiency of measuring the radioactive gas Radon ({sup 222} Rn) with passive detector activated carbon. Alpha Guard, exposure chamber, air sampler, default font Radio, calibrator flow, flow adjuster, ducts drivers: For this, various equipment to make the measurement system as were used. An assembly of such equipment, with specific sequence was used allowing for more efficient exposure of passive detectors Radon gas. Twenty samples were heated to remove moisture and then stored in desiccator until the experiment were made. The exhibition was held passive dosimeters being removed from the chamber, and one hour after, subjected to analysis by gamma spectrometry in germanium (HPGe) for an hour. Subsequently, other measurements were made at scheduled times and sequential for one hour. The results were presented in report form and spectra, measures and graphs generated by Alpha Guard were also extracted. Finally we calculated the efficiency of the passive meter activated carbon. (author)

  7. Characterization and evaluation of residue 'grits' of the cellulose industry; Caracterizacao e avaliacao do resisduo 'grits' da industria de celulose

    Energy Technology Data Exchange (ETDEWEB)

    Destefani, A.Z.; Santos, M.M.; Holanda, J.N.F. [Universidade Estadual do Norte Fluminense Darcy Ribeiro (LAMAV/CCT/UENF), Campos dos Goytacazes, RJ (Brazil). Lab. de Materiais Avancados

    2010-07-01

    The cellulose industry generates huge amounts of solid waste residue called 'grits'. These wastes have been willing over time in landfills near the mills. However, this type of disposal is not environmentally friendly and can cause degradation and environmental pollution. In addition, environmental legislation increasingly severe and the high costs of landfill have led the search for new alternatives for final disposition of this abundant waste. In this context, this study is to characterize waste grits, generated by the cellulose industry in the region of Aracruz-ES. The residue samples were characterized in terms of chemical composition, X-ray diffraction, particle size distribution and thermal analysis (DTA and TGA). The characterization of the residual 'grits' demonstrated its potential as a feedstock for production of soil-cement bricks. (author)

  8. Magnetic resonance imaging textural evaluation of posterior cranial fossa tumors in childhood; Avaliacao textural por ressonancia magnetica dos tumores da fossa posterior em criancas

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Joelson Alves dos; Costa, Maria Olivia Rodrigues da; Otaduy, Maria Concepcion Garcia; Lacerda, Maria Teresa Carvalho de; Leite, Claudia da Costa [Sao Paulo Univ., SP (Brazil). Faculdade de Medicina. Dept. de Radiologia]. E-mail: joelson_alves@ig.com.br; Matsushita, Hamilton [Sao Paulo Univ., SP (Brazil). Faculdade de Medicina. Dept. de Neurologia

    2004-08-01

    Objective: To distinguish healthy from pathological tissues in pediatric patients with posterior cranial fossa tumors using calculated textural parameters from magnetic resonance images. Materials And Methods: We evaluated 14 pediatric patients with posterior cranial fossa tumors using the software MaZda to define the texture parameters in selected regions of interest representing healthy and pathological tissues based on T2-weighted magnetic resonance images. Results: There was a statistically significant difference between normal and tumoral tissues as well as between supposedly normal tissues adjacent and distant from the tumoral lesion. Conclusion: Magnetic resonance textural evaluation is an useful tool for determining differences among various tissues, including tissues that appear apparently normal on visual analysis. (author)

  9. Microstructural evaluation of a varistor block utilized in high voltage surge arresters; Avaliacao microestrutural de um bloco varistor utilizado em para-raios de alta tensao

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, J.M. de; Dias, R.; Furtado, J.G. de M., E-mail: jma_ime@yahoo.com.b [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil); Assuncao, F.C.R. [Pontificia Univ. Catolica do Rio de Janeiro (PUC-Rio), RJ (Brazil)

    2010-07-01

    Varistor is a semiconductor ceramic device characterized to have a high non-linear electrical resistance, it is used as active element of surge arresters with purpose of protecting of electro-electronics systems. Its properties are directly dependents of chemical composition and microstructural characteristics, such as grain size, porosity, twins and phases distribution. This work has the objective to characterize microstructurally a commercial varistor block of ZnO used in high voltage surge arrest and from this characterization to infer aspects about of its electrical macroscopic performance. DRX and SEM-EDS were used for microstructural analysis. The microstructural evaluation allows pointing the critical points of microstructure and, suggest relevant aspects to the improvement of commercial varistor microstructure, optimizing the electrothermal behavior of the device. (author)

  10. Evaluation of mineral kaolinite present in portuguese clays for use in porcelain stoneware; Avaliacao do mineral caulinita presente em argilas portuguesas para uso em gres porcelanato

    Energy Technology Data Exchange (ETDEWEB)

    Luna da Silveira, G.C. [Instituto Federal do Rio Grande do Norte (IFRN), RN (Brazil); Acchar, W.; Gomes, U.U.; Luna da Silveira, R.V. [Universidade Federal do Rio Grnde do Norte (UFRN), RN (Brazil); Labrincha, A.; Miranda, C.M.P., E-mail: glebacoelli@hotmail.com [Universidade de Aveiro (Portugal)

    2016-07-01

    Kaolinite is a mineral from the kaolin, product resulting from transformation in depth of alumino silicate mineral type, such as feldspars, plagioclase and feldspars contained in the rocks. Clays are raw materials that have as main characteristic the plasticity property, which gives the product, after applying a certain pressure, a defined shape and an increase in the mechanical resistance when they become from green to dry and then to sintered. Given these characteristics, this paper analyzes the presence of the existing mineral kaolinite in two portuguese clays who are used in the preparation of formulations of porcelain stoneware tiles. The analyzes of the two clays were made by fluorescence x-ray diffraction of x-rays, thermal analysis, particle size and scanning electron microscopy, to better use of this mineral in the formulations. In both clays were found aluminum oxide, as well as mineral quartz, kaolinite and illite. (author)

  11. Exploiting the use of compact heat exchangers on preheating trains; Avaliacao de desempenho de trocadores compactos em bateria de pre-aquecimento - REDUC

    Energy Technology Data Exchange (ETDEWEB)

    Villas Boas, Alan Trugilho; Bolsoni, Adair [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Refinaria de Duque de Caxias (REDUC); Kuboski, Claudio; Cesario, Diomedes [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES)

    2008-07-01

    The U-1210 distillation unit of Holding has being expected to suffer a metallurgical adaptation in order to process petroleum with higher naphthenic acids concentration. A heat integration study (pinch analysis) was realized, with the restriction of limited plot area and shut-down time. A full compabloc preheat train was preliminary concept. During conceptual design, REDUC found it to be a good idea to have a performance test. A compabloc CP30 unit has been installed, in order to evaluate the performance of this equipment under unit conditions. The operation service chosen was vacuum residue preheating crude before the dessalter, low crude temperature (100 deg C to 115 deg C). The objective was operational and maintenance experience. (author)

  12. Comparison of the automated evaluation of phantom mama in digital and digitalized images; Comparacao da avaliacao automatizada do phantom mama em imagens digitais e digitalizadas

    Energy Technology Data Exchange (ETDEWEB)

    Santana, Priscila do Carmo, E-mail: pcs@cdtn.b [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Dept. de Engenharia Nuclear. Programa de Pos-Graduacao em Ciencias e Tecnicas Nucleares; Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Fac. de Medicina. Dept. de Propedeutica Complementar; Gomes, Danielle Soares; Oliveira, Marcio Alves; Nogueira, Maria do Socorro, E-mail: mnogue@cdtn.b [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2011-07-01

    Mammography is an essential tool for diagnosis and early detection of breast cancer if it is provided as a very good quality service. The process of evaluating the quality of radiographic images in general, and mammography in particular, can be much more accurate, practical and fast with the help of computer analysis tools. This work compare the automated methodology for the evaluation of scanned digital images the phantom mama. By applied the DIP method techniques was possible determine geometrical and radiometric images evaluated. The evaluated parameters include circular details of low contrast, contrast ratio, spatial resolution, tumor masses, optical density and background in Phantom Mama scanned and digitized images. The both results of images were evaluated. Through this comparison was possible to demonstrate that this automated methodology is presented as a promising alternative for the reduction or elimination of subjectivity in both types of images, but the Phantom Mama present insufficient parameters for spatial resolution evaluation. (author)

  13. Effect of Nutrient Supply on Chemical and Energetic Characteristics of Fiber Sorghum Biomass; Influencia del Aporte de Nutrientes en las Caracteristicas Quimico-Energeticas de la Biomasa de Sorgo Forrajero

    Energy Technology Data Exchange (ETDEWEB)

    Ciria, P; Gonzalez, E; Negro, M J; Solano, M L [CIEMAT. Madrid (Spain)

    1999-12-31

    The main objective of the present work, is to study the effect of the addition of different nutrients and irrigation doses on the chemical and energetical characteristics of the Sorghum bicolor (L). Moench ssp. bicolor biomass. The effect of compost addition is compared with the mineral fertilization in two different irrigation doses. The experimental parcel, is located at CIEMAT-CEDER (Soria) , at 1000 m above sea level, with a extremely weather and a loam sandy soil texture. The results obtained in the tested conditions show: a) the average biomass productivity was 9.8 t d. m./ha, and no significant differences between treatments were observed. b) Mean values of the proximate analysis were 72.6 volatile matter, 6.2% ashes and 21.2% fixed carbon. The volatile matter increases (1.1%) and the ashes decreases (1.4%) for the highest irrigation dose both in plots with no addition and in plots amended with compost. c) The N, S and Cl contents decreases for the highest irrigation dose in the same cases above mentioned. Mean values of the elemental analysis were: 45.0% C, 6.3% H, 1.4%% N, 0.15% S and 0.49%Cl. d) The average High Heating Value was 18071 kJ/kg d. m. and no significant differences between treatments were observed e) For the highest irrigation doses, a reduction in the K{sub 2} O, P{sub 2} O{sub 5}, Mg and Si content, and a increase in the Al, Fe and Ti in ashes were detected. (Author) 13 refs.

  14. Effect of Nutrient Supply on Chemical and Energetic Characteristics of Fiber Sorghum Biomass; Influencia del Aporte de Nutrientes en las Caracteristicas Quimico-Energeticas de la Biomasa de Sorgo Forrajero

    Energy Technology Data Exchange (ETDEWEB)

    Ciria, P.; Gonzalez, E.; Negro, M. J.; Solano, M. L. [CIEMAT. Madrid (Spain)

    1998-12-31

    The main objective of the present work, is to study the effect of the addition of different nutrients and irrigation doses on the chemical and energetical characteristics of the Sorghum bicolor (L). Moench ssp. bicolor biomass. The effect of compost addition is compared with the mineral fertilization in two different irrigation doses. The experimental parcel, is located at CIEMAT-CEDER (Soria) , at 1000 m above sea level, with a extremely weather and a loam sandy soil texture. The results obtained in the tested conditions show: a) the average biomass productivity was 9.8 t d. m./ha, and no significant differences between treatments were observed. b) Mean values of the proximate analysis were 72.6 volatile matter, 6.2% ashes and 21.2% fixed carbon. The volatile matter increases (1.1%) and the ashes decreases (1.4%) for the highest irrigation dose both in plots with no addition and in plots amended with compost. c) The N, S and Cl contents decreases for the highest irrigation dose in the same cases above mentioned. Mean values of the elemental analysis were: 45.0% C, 6.3% H, 1.4%% N, 0.15% S and 0.49%Cl. d) The average High Heating Value was 18071 kJ/kg d. m. and no significant differences between treatments were observed e) For the highest irrigation doses, a reduction in the K{sub 2} O, P{sub 2} O{sub 5}, Mg and Si content, and a increase in the Al, Fe and Ti in ashes were detected. (Author) 13 refs.

  15. Design and Implementation of an Integrated Modeling Platform for Sustainable Energy Planning - MODERGIS -. Colombia Case Study; Diseno e Implementacion de una Plataforma Integrada de Modelacion para la Planificacion Energetica Sostenible MODERGIS . Estudio de Caso Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Quijano, R

    2012-07-01

    This research presents the MODERGIS Integrated Simulations Platform as a tool to promote and develop renewable energy plans under sustainability criteria, in order to increment the participation of renewable technologies in the national energy mix and shows an application to Colombia as a case study. Potential zones of solar and wind energy and productive areas for bio-energies were determined, by means of a geographical information system which simulated energy scenarios influenced by climatic phenomena up to the year 2030. Results yield potentials of 26,600 MW in wind energy and 350,000 MW in solar energy. Bioenergy potentials in a sustainable way of 366,310 k m2 per biomass, 291,486 km{sup 2} in African palm, 9,667 km{sub 2} in sugar cane. These scenarios were simulated in a supply/demand with time horizons up until 2030, including an analysis of the effects on the energy systems of the El Nino Southern Oscillation atmospheric component (ENSO). Finally, in order to obtain an appropriate mix of renewable sources, that could be introduced in the national energy mix, the Multi-Criteria Analysis method VIKOR was used, allowing to perform 5151 possible combinations of renewable projects; the optimal selection corresponds to 600 MW from wind power, 740 MW solar photovoltaic and 660 MW solar thermoelectric. Giving these results to the new scene allowed for incrementing the participation of renewable technologies up to a 0.23% in the current year and up to a 7% of the energy mix in the year 2030. (Author)

  16. Nuclear and Energy Research Institute (1956-2000). A case study under the science, technology and brazilian culture history; Instituto de Pesquisas Energeticas e Nucleares (1956-2000). Um estudo de caso a luz da historia da ciencia, da tecnologia e da cultura brasileira

    Energy Technology Data Exchange (ETDEWEB)

    Gordon, Ana Maria Pinho Leite

    2003-07-01

    We analysed a period of the contemporary Brazilian history with the aim to discuss the inter-relationship between science, technology (S and T) and culture in a developing country, showing as a background for a case of study the history of the 'Instituto de Pesquisas Energeticas e Nucleares'. The history of Science and Technology, as a result of the human brain ability of innovate using the resources offered by nature, it is not only the description of successive findings carried out by talented men. It is a reflex of determined age of history as a consequence of accumulated knowledge connected also to human and cultural relationships, which together leads to the scientific and technological progress. In fact, the human brain and society march along together and can not be separated in this journey. In our study we recovered the initial steps of IPEN's outbreak; inserted its achievements in the context of the national policy for nuclear technology and evaluated how this policy was a reply of the governmental organizations to the worldwide situation. Finally, we spread the scientific ideas and technological findings of this institution, who has translate much of the life style and culture of our society. For this purposes, we analysed internal technical report series elaborated by several researchers and few testimonies. The Institution developed the fuel cycle technology, supplied radioisotopes for medical diagnosis and treatment purposes, generating economic resources for our country. The nuclear techniques are a relevant tool for researchers of this Institution applied for several purposes, including the assessment of the radioactivity levels in the environment, radioprotection, etc. Besides those applications, other techniques including the laser technology, the fuel cell, corrosion studies, etc, were implemented as a result of the improved capabilities and skills acquired during the almost 50 years of the Institute's existence. We make

  17. Evaluation of the bleaching flux in clays containing hematite and different clay minerals; Avaliacao do fundente descolorante em argilas contendo hematita e diferentes argilominerais

    Energy Technology Data Exchange (ETDEWEB)

    Silva Junior, E.M.; Lusa, T.; Silva, T.M.; Medeiros, B.B.; Santos, G.R. dos [Universidade Tecnologica Federal do Parana (DAMEC/UFTPR), Pato Branco, PR (Brazil); Morelli, M.R., E-mail: geocrisr@utfpr.edu.com, E-mail: morelli@power.ufscar.br [Universidade Federal de Sao Carlos (DEMa/PPGCEM/UFSCar), SP (Brazil)

    2016-07-01

    Previous studies have shown that the addition of a synthetic flux in a clay mineral constituted by illite phase in the presence of iron oxide with the hematite, promotes color change of the firing products, making the reddish color firing into whiteness. This flow is constituted of a vitreous phase of the silicates family obtained by fusion/solidification of oxides and carbonates. Thus, the objective of this work was that of studying the interaction of the iron element in the final color mechanism of the different types of mineral crystal phase of the clays. In order to study the phenomenon, we obtained different compositions between the select clays and the synthetic flow, and characterization using X-ray diffraction (XRD) and visual analysis. The results showed that the action of the synthetic flow as a modifying agent for color depends on the mineral crystal phase of the clays. The color firing modification does not occur in the clays content high levels of kaolinite mineral phase. (author)

  18. Evaluation of the potential of waste fondant glass in formulations of ceramic pasta; Avaliacao do potencial fundente do residuo de vidro em formulacoes de massas ceramicas

    Energy Technology Data Exchange (ETDEWEB)

    Soares Filho, J.E.; Santos, L.L. dos; Nascimento, R.M. do, E-mail: elsinhofilho@gmail.com [Universidade Federal do Rio Grande do Norte (PPGCEM/UFRN), RN (Brazil). Programa de Pos-Graduacao em Ciencia e Engenharia de Materiais; Feitosa, A.O.; Dutra, R.P.S. [Universidade Federal da Paraiba (PPCEM/UFPB), PB (Brazil). Programa de Pos-Graduacao em Ciencia e Engenharia de Materiais

    2014-07-01

    An increasing amount of waste generated and deposited on the environment, many unspecified decomposition with time, as is the case of the glass. Thinking about it, the purpose of this study is to evaluate the power of the flux residue on glass formulations porcelains, as a flux to feldspar replacement. This study was performed in comparison with a standard formulation. The raw materials were characterized in the diffraction X-ray fluorescence and X-ray thermal differential analysis, and determination of the technological properties of water absorption, linear contraction, ignition loss, apparent porosity and apparent specific gravity in the formulation standard and replacement of feldspar in different percentages of waste and processing conditions. Specimens of the formulations were subjected to assay of three points. Results indicate that the residue glass has the potential of being used as a flux material in the composition of the ceramic body reduces the apparent porosity and according to the technology of water absorption property. The ceramic mass standard was classified as semi-stoneware, the BIIa group, and after the addition of the residue in any of the three percentages evaluated was classified as sandstone, belonging to the group BIb.(author)

  19. Photoluminescence evaluation of TiO{sub 2} synthesized by Pechini method; Avaliacao da fotoluminescencia do TiO{sub 2} sintetizado pelo metodo Pechini

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, D.S.; Diniz, V.C.S.; Dantas, J.; Araujo, P.M.A.G.; Costa, A.C.F.M., E-mail: dagobertoufcg@gmail.com [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Programa de Pos-Graduacao em Ciencia e Engenharia de Materiais; Viana, R.S.; Junior, S.A. [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. Quimica Fundamental; Torquato, R.A. [Universidade Federal da Paraiba (UFPB), Joao Pessoa, PB (Brazil). Dept. de Engenharia de Materiais

    2017-07-15

    Titanium dioxide (TiO{sub 2}) stands out for use in various applications mainly due to its properties of thermal and chemical stability and its excellent optical properties. However, these properties are dependent on the type and phase morphology, which is related to the TiO{sub 2} processing method. Thus, this paper proposed to synthesize TiO{sub 2} nanoparticles by polymeric precursor method with different polymorphs, and evaluate the influence of these phases in the photoluminescent properties. For this, the stoichiometric molar proportions of citric acid:metallic cations of 1:1, 2:1, 3:1, 4:1 and 5:1 were investigated. The nanoparticles were characterized by X-ray diffraction (XRD), infrared spectroscopy, textural analysis, scanning electron microscopy (SEM), excitation and emission spectroscopy and determination of the band gap by UV-Vis diffuse reflectance spectroscopy. The presence of anatase and rutile was confirmed by XRD in different proportions for each sample. The agglomerate size increased with the citric acid/metal cations ratio as observed by SEM. Concerning photoluminescence, the maximum intensity in the emission spectrum occurred at the wavelength of 533 nm for the 3:1 sample and the maximum intensity in the excitation spectrum occurred for the 2:1 sample at the wavelength of 451 nm. (author)

  20. Synthesis optimization of calcium aluminate cement phases for biomedical applications; Avaliacao da sintese das fases de cimento de aluminato de calcio

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, T.L.; Santos, G.L.; Oliveira, I.R. [Universidade do Vale do Paraiba (UNIVAP), Sao Jose dos Campos, SP (Brazil); Pandolfelli, V.C. [Universidade Federal de Sao Carlos (UFSCar), SP (Brazil)

    2011-07-01

    Calcium aluminate cement (CAC) has been studied as a potential material for applications in the areas of health such as, endodontics and bone reconstruction. These studies have been based on commercial products consisting of a mixture of phases. Improvements can be attained by investigating the synthesis routes of CAC aiming the proper balance between the phases and the control of impurities that may impair its performance for biomedical applications. Thus, the aim of this work was to study the CAC synthesis routes in the Al{sub 2}O{sub 3}-CaCO{sub 3} and Al{sub 2}O{sub 3}-CaO systems, as well as the phase characterization attained by means of X ray analysis. The Al{sub 2}O{sub 3}-CaO route enabled the production of the target phases (CA, CA{sub 2}, C{sub 3}A and C{sub 12}A{sub 7}) with a higher purity compared to the Al2O3-CaCO3 one. As a result the particular properties of these phases can be evaluated to define a more suitable composition that results in better properties for an endodontic cement and other applications. (author)

  1. Comparative evaluation of hybrid systems of natural gas cogeneration and sugar cane bagasse; Avaliacao comparativa de sistemas hibridos de cogeracao a gas natutral e bagaco de cana

    Energy Technology Data Exchange (ETDEWEB)

    Zamboni, Leonardo Moneci; Tribess, Arlindo [Sao Paulo Univ., SP (Brazil). Escola Politecnica. Dept. de Engenharia Mecanica]. E-mail: leonardo.zamboni@poli.usp.br; atribess@usp.br

    2006-07-01

    The consumption of electricity in Brazil and mainly in the State of Sao Paulo is increasing gradually. On the other hand, the hydraulic potential is practically exhausted and the government has no resources for such new investments. One solution is the construction of thermo electrical plants with the use of the natural gas and sugar cane bagasse. The natural gas has the advantage of being available in great amount and less pollutant. And the sugar cane bagasse, besides being a by-product of low value, does not cause a global pollution. The work consists of the determination of the best option considering criterion of minimum cost for kWh of energy produced. For such, thermo economic analysis with electricity and steam production costs evaluation in exergetic basis, was accomplished. In the evaluations the consumption of natural gas and the costs of the sugar cane bagasse were varied. The results show that the cogeneration plant with combined cycle using natural gas and burning sugar cane bagasse in the recovery boiler presents the smallest cost of electricity and steam generation (even not being the cycle with larger exergetic efficiency). On the other hand, for a natural gas cost of 140 US$/t and a cost of sugar cane bagasse superior to 10,50 US$/t the cogeneration plant with combined cycle using only natural gas (and, therefore not burning or gasifying sugar cane bagasse) presented the smallest cost of electricity and steam generation. (author)

  2. Evaluation of the chemical modifications in petroleum asphalt cement with the addition of polypropylene; Avaliacao das modificacoes quimicas no cimento asfaltico de petroleo com a adicao de polipropileno

    Energy Technology Data Exchange (ETDEWEB)

    Marcondes, C.P.; Sales, M.J.A.; Resck, I.S., E-mail: mjsales@unb.b [Universidade de Brasilia (LabPol/UnB), DF (Brazil). Inst. de Quimica. Lab. de Pesquisa em Polimeros; Farias, M.M.; Souza, M.V.R. [Universidade de Brasilia (UnB), DF (Brazil). Dept. de Engenharia Civil e Ambiental

    2010-07-01

    Studies show that the common distress mode in the Brazilian highway network are fatigue cracks and plastic deformation, which are associated with the type of material used in the pavement layers, structural project, excessive traffic load and weathering. To minimize these defects, research on modifiers such as polymers, added to asphalt binders have been developed to provide physical, chemical and rheological improvement. This paper investigates chemical modifications of the binders with the addition of PP by FTIR, NMR and DSC. FTIR spectra of pure and modified binder showed no differences in absorption. NMR analysis showed no strong chemical bonds between the binder and PP. DSC curve of PP showed a melting temperature of 160 deg C ({Delta}H = 94J/g) and the pure binder presented an endothermic transition between 20 and 40 deg C ({Delta}H = 2J/g). In the DSC curves of mixtures, these transitions are not significant, indicating possible interactions between asphalt binder and PP. (author)

  3. Economic evaluation of organic deposition inhibition treatment: case study; Avaliacao economica de tratamentos de inibicao de deposicao organica: estudo de casos

    Energy Technology Data Exchange (ETDEWEB)

    Lechuga, Fernanda Curty; Seidl, Peter Rudolf; Guimaraes, Maria Jose de Oliveira [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Escola de Quimica; Lucas, Elizabete Fernandes [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Macromoleculas

    2008-07-01

    During the production process the temperature and pressure decrease along the well, that generate an increase in viscosity, changes in the composition of the oil and chemical changes in the balance of oil. These changes in the balance may lead to precipitation and deposition of organic components of heavy oil. These occurrences cause serious economic consequences. To solve problems related to organic deposition, it is proposed some actions to prevent the formation of these deposits. Chemical additives interfere in precipitation of paraffins and aggregation of asphaltenes, increasing stability. This paper aims to examine, in economic terms, treatments prevention in different wells by the mechanism of inhibition of organic deposition by the action of chemical additives. The methodology applied for the economic analysis was the return on investment (ROI - Return-on-investments) that could estimate when there was an economic gain in problems of organic deposition treated with chemical additives. The results showed that if these wells use prevention methods it could get a return of more than $ 100.00 per dollar invested in treatment, which would be beneficial, since these treatments increase the production of oil and reduce the idle time in wells. (author)

  4. A model for economic evaluation of the use of Adsorbed Natural Gas (ANG); Modelo de avaliacao economica do uso do Gas Natural Adsorvido (GNA)

    Energy Technology Data Exchange (ETDEWEB)

    Azevedo, Diana C.S.; Cavalcante Junior, Celio L.; Torres, A. Eurico B.; Oliveira Junior, Jose A.; Medeiros, Vanildo M. de [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil); Campos, Flavio B.; Moura, Newton R. de [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES). Gerencia de Gas e Energia; Campos, Michel F. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Gerencia de Tecnologia de Gas e Energia; Alexandre, Francisco de Assis Souza

    2004-07-01

    Natural gas is currently transported by two main ways: through pipelines and stored in reservoirs, under compressed (CNG) or liquefied (LNG) forms. Adsorbed natural gas (ANG) is a third alternative to vessel storage, which has been intensively reported in the scientific and technical literature. Working pressures are considerably lower for ANG (3,5 MPa as compared to 25 MPa for CNG), which results in lower costs with vessel construction and compression and safer handling. The project ADSPOR, sponsored by PETROBRAS and part of the R and D portfolio of RedeGasEnergia, aims to assess the technical and economical feasibility of storing and transporting natural gas confined in carbon adsorbents. The objectives of this project are the production of high-capacity active carbons, the collection of adsorption data for NG storage and the economic evaluation of ANG. The present work presents a model for cost estimation of the ANG business, which comprises from the compression into ANG vessels until the distribution to the final costumer, taking into account several shipping modes. The variables involved in the model were: compression costs, equipment and materials technical data, costs with product handling and shipping costs for motor ways, railways and inland waterways. These variables were linked so as to generate a cost matrix that may be used to assess investment and calculate the final cost for GNA transport. The model may be used to carry out parameter sensitivity analysis, for decision-making and management purposes. (author)

  5. Ribeira do Iguape basin water quality assessment for drinking water supply; Avaliacao da qualidade da agua na bacia hidrografica do Ribeira de Iguape com vistas ao abastecimento publico

    Energy Technology Data Exchange (ETDEWEB)

    Cotrim, Marycel Elena Barboza

    2006-07-01

    Ribeira do Iguape Basin, located in the Southeast region of Sao Paulo state, is the largest remaining area of Mata Atlantica which biodiversity as rich as Amazon forest , where the readiness of water versus demand is extremely positive. With sparse population density and economy almost dependent on banana agriculture, the region is still well preserved. To water supply SABESP (Sao Paulo State Basic Sanitation Company). Ribeira do Iguape Businesses Unit - RR, uses different types of water supplies. In the present work, in order to ascertain water quality for human consumption, major and minor elements were evaluated in various types of water supply (surface and groundwater's as well as the drinking water supplied). Forty three producing systems were monitored: 18 points of surface waters and treated distributed water, 10 points of groundwater and 15 points of surface water in preserved areas, analyzing 30 elements. Bottom sediments (fraction < 63 {mu}m) were also evaluated. The sampling period covered dry and wet seasons from March 2002 to February 2003. The descriptive analysis showed that Al, Fe and Mn, exceeding CONAMA 357 quality guideline. A comparison of the elemental concentrations with the Brazilian Drinking Water Legislation (Portaria 518/04) showed that with the exception of some violations, the levels of all the elements investigated were below the Brazilian Legislation maximum allowed concentrations. This study examined the relationship between the type of water supply and the quality of water used, showed different characteristics on Ca, Fe, Mn concentration. In bottom sediments (fraction <63 {mu}m), Al, Fe and Mg largest concentrations were found. Pb and Zn presents concentrations up to 142,0 {mu}g.g{sup -1} and 172 {mu}g.g{sup -1}, respectively. Data revealed that trace elements concentration in the sediment were below PEL (Probable Effect Level - probable level of adverse effect to the biological community), exception for Pb in Sete Barras and

  6. Occupational exposure prevention program to oil and gas industry; Antecipacao, reconhecimento, avaliacao e controle dos riscos ambientais em uma planta de petroleo e gas

    Energy Technology Data Exchange (ETDEWEB)

    Moraes, Paulo Sergio de [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil); Palierini, Renato Martins [TWA Brasil, Sao Caetano do Sul, SP (Brazil)

    2005-07-01

    PETROBRAS/TRANSPETRO Pipelines and Terminals have 500 regular employees and 5.064 out sourced workers in its Southeast Division. The out sourced employees work under 125 contracts involving a wide range of activities such as maintenance, pipeline operation, pipeline launching, engineering, administrative and auxiliary services. Among these workers, 1.200 peoples are subjected to occupational exposure, which may be present in the industrial process or in the products transported in our pipelines, e.g. industrial noise, sulfidric gas, toluene, xylene and benzene (recognized as a carcinogen according to ACGIH and Brazilian Ministry of Labour). Our PPRA (acronym in Portuguese for Occupational Exposure Prevention Program) involves the workforce and fosters health by anticipation, recognition, evaluation and control of the situations that may result in injuries. Further actions include the procurement of equipment for detection of these agents not only in the air but also diluted in liquids and the introduction of state-of the- art technologies for a better process control. The priority is the acquisition of equipment for collective protection not forgetting the individual protection equipment (IPE) and the required training. Implementation of this program counted on the effective involvement of the managers, contract supervisors and HSE professionals whose main task was to advise all involved parts on the use the Risk Analysis Methods tailored for Occupational Hygiene. Furthermore, these information will be used in a info system called SD-2000 that will gather and compare Health, Hygiene e Human Resources data in order to support the professional in the management and decision making process. (author)

  7. Evaluation of quality control tools for patients submitted to IMRT; Avaliacao das ferramentas de controle da qualidade para pacientes submetidos ao IMRT

    Energy Technology Data Exchange (ETDEWEB)

    Lavor, Milton; Rodrigues, Laura N.; Silva, Marco A., E-mail: miltonlavor@gmail.com [Universidade de Sao Paulo (HCFMRP/USP), Sao Paulo, SP (Brazil). Hospital das Clinicas. Servico de Radioterapia

    2013-04-15

    Intensity modulated radiation therapy (IMRT) is currently being implemented in a rapidly growing number of centers in Brazil. As consequence many institutions are now facing the problem of performing a comprehensive quality control program before and during the implementation of IMRT in the clinical practice. This paper proposes a methodology for quality control and presents the results and evaluations of the data obtained from the proposed methodology. Ionization chamber and two-dimensional array detector were performed in IMRT treatment planning in order to assess the absolute value of the total dose of all fields. The relative total dose distribution of all fields was measured with a radiochromic film and a two-dimensional array in a phantom. A comparison between measured and calculated dose distributions was performed using the gamma-index method, assessing the percentage of points that meet the criteria of ±3% dose difference and ±3mm distance to agreement. As a result and review of 113 tested IMRT beams using ionization chamber and 81 using two-dimensional array, the proposal was to take an action level of about ±5% compared to the treatment planning systems and measurements, for the verification of the dose in a single point at the low gradient dose region. Analysis of the two-dimensional array measurements showed that the gamma value was <1 for 97.7% of the data and for the film the gamma value was <1 for 96.6% of the data. This work can establish action levels required for quality control program proposed and implemented in the Department of Radiotherapy - Hospital das Clinicas in Sao Paulo that allows an accurate delivery of dose in 'sliding-window' IMRT with micro multi leaf collimator. (author)

  8. Chemometric techniques on evaluation of the flavor of irradiated orange juice concentrate; Tecnicas quimiometricas na avaliacao do sabor de aroma do suco de laranja concentrado e irradiado

    Energy Technology Data Exchange (ETDEWEB)

    Spoto, Marta Helena Fillet

    1994-12-31

    The effects of storage temperature and time on can orange juice concentrated were studied for samples irradiated at 2.5, 5.0 and 7.5 kGy doses from a gamma-ray source as well as for untreated samples. All samples were stored at 0{sup 0} C, 5{sup 0} C and 25{sup 0} C for periods of 1, 30, 60 and 90 days. The concentrated orange juice was subjected to sensorial evaluations and gas chromatographic analysis. The free profile technique was applied using eight trained panel applying the Quantitative Descriptive Analyses, using a 10 cm unstructured category scale for each attribute. Samples stored for more than one day showed a diminution in the orange attribute rating and correspondent increases in ratings for the bitterness, medicinal and cooked attributes. Storage at 0{sup 0} C and 5{sup 0} C showed smaller effects on the sweetness ratings as well as on the oily, acidic and medicinal flavor characteristics. In most cases increased radiation levels were accompanied by lower intensity of orange attribute values and higher intensity of bitter, medicinal and cooked attributes. Forty three chemical compounds were characterized. Mircene, octanal, {delta}-3-carene, limonene, citronelal, and neral were highly correlated and statistically significant correlation coefficients. All these components showed low, but 95% confidence significant level correlations with the orange attribute. On the other hand the correlated group of hexanal, octanol, oxidation products, terpinene-4-ol, cis-carveol, nerol, carvona, geraniol, perilyl alcohol and cariophilene substances can be associated the bitter, medicinal and cooked attributes of the irradiated orange juice concentrate. (author). 83 refs., 7 figs., 12 tabs.

  9. Ribeira do Iguape basin water quality assessment for drinking water supply; Avaliacao da qualidade da agua na bacia hidrografica do Ribeira de Iguape com vistas ao abastecimento publico

    Energy Technology Data Exchange (ETDEWEB)

    Cotrim, Marycel Elena Barboza

    2006-07-01

    Ribeira do Iguape Basin, located in the Southeast region of Sao Paulo state, is the largest remaining area of Mata Atlantica which biodiversity as rich as Amazon forest , where the readiness of water versus demand is extremely positive. With sparse population density and economy almost dependent on banana agriculture, the region is still well preserved. To water supply SABESP (Sao Paulo State Basic Sanitation Company). Ribeira do Iguape Businesses Unit - RR, uses different types of water supplies. In the present work, in order to ascertain water quality for human consumption, major and minor elements were evaluated in various types of water supply (surface and groundwater's as well as the drinking water supplied). Forty three producing systems were monitored: 18 points of surface waters and treated distributed water, 10 points of groundwater and 15 points of surface water in preserved areas, analyzing 30 elements. Bottom sediments (fraction < 63 {mu}m) were also evaluated. The sampling period covered dry and wet seasons from March 2002 to February 2003. The descriptive analysis showed that Al, Fe and Mn, exceeding CONAMA 357 quality guideline. A comparison of the elemental concentrations with the Brazilian Drinking Water Legislation (Portaria 518/04) showed that with the exception of some violations, the levels of all the elements investigated were below the Brazilian Legislation maximum allowed concentrations. This study examined the relationship between the type of water supply and the quality of water used, showed different characteristics on Ca, Fe, Mn concentration. In bottom sediments (fraction <63 {mu}m), Al, Fe and Mg largest concentrations were found. Pb and Zn presents concentrations up to 142,0 {mu}g.g{sup -1} and 172 {mu}g.g{sup -1}, respectively. Data revealed that trace elements concentration in the sediment were below PEL (Probable Effect Level - probable level of adverse effect to the biological community), exception for Pb in Sete Barras and

  10. Enzymes evaluation for the polymeric filter cake removal; Avaliacao de enzimas para remocao de reboco formado por fluidos polimericos de base agua

    Energy Technology Data Exchange (ETDEWEB)

    Kameda, Etel; Coelho, Maria Alice Z. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Escola de Quimica; Langone, Marta A.P. [Universidade do Estado do Rio de Janeiro (UERJ), RJ (Brazil). Inst. de Quimica; Queiroz Neto, Joao C. de [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES)

    2004-07-01

    In the drilling wells in horizontal or complex configurations, the drilling fluid contact with the productive zone can reduce the productivity by fluid invasion in the borehole wall. Drilling fluids usually comprise natural polymers as starch and xanthan gum. These polymers are deposited as the filter-cake on the wellbore wall. A common approach to remove this filter-cake is the application of acids or strong oxidative solutions. However, these are non-specific species which will react with any encountered that is acid soluble or oxidizable. An alternative is the use of enzymatic preparations that are able to hydrolyze such polymers. The enzymes catalyze only certain specific substrates, are inherently environmentally friendly, the enzymatic degradation rate is slower than that achieved by the oxidative species, so the enzymes produces an uniform filter cake degradation. In this work, the kinetic behaviors of an enzymatic filter-cake breaker and a commercial thermo stable enzymatic complex were analyzed. Both kinetic profiles were very similar, as well as its electrophoresis analysis. The protein in each product showed identical molecular weight. The commercial enzymatic complex stability remained 58.56% of enzymatic activity after 30 days at 40 deg C. Stability at wellbore conditions can be considered similar for both products. At 65 deg C they showed the same enzymatic activity after 8 hours. After 3 hours at 80 deg C, the commercial enzymatic complex remained 29.89% of the initial activity and the filter-cake breaker 61.73%, while at 95 deg C remained 4.39% and 11.60% of the initial activity, respectively, after 15 minutes. (author)

  11. Evaluation of environmental impacts in the mining of solid fossil fuels; Avaliacao de impactos ambientais na mineracao de combustiveis fosseis solidos

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Gilda Carneiro

    1989-07-01

    This study evaluates the environmental problems caused by the mining works of coal, peat and oil schists; also it evaluates the kind of treatment used by the mining companies against water, air and ground pollution, as well as the necessary control according to the mine activities and the affected environment. the studied areas are situated at brasilian states of Santa Catarina (Criciuma, Urussanga and Sideropolis), Rio Grande do Sul (Charqueada, Bage, Cachoeira do Sul, Butia and Arroio dos Ratos), Parana (Figueira and Sao Mateus do Sul), and Sao Paulo (Iguape and Sao Jose dos Campos). This study was done through a direct inquiry, by sending questionnaire to fifteen coal mining companies, three of peat ones and one of oil schists one. besides it was done a compilation of federal and state laws concerning to the environment and on the rights and duties of the mining companies. The information brought up in this way were compiled into a data bank, which allowed and sample surveys of environmental condition in the different industries and further it enabled a comparison between the real facts and the bibliography suggestions about adequate monitoring of the air, waters and ground, during mining activities. this analysis showed that the environment problems, created by the three former kind of mining works, are under control through projects of environment restoring and monitoring in phase of implantation and that these projects are restricted to that less expensive and easier to construct (holding back in pools or reservoirs, pouring in pits and aspersion). It was not notices a significant monitoring of parameters considered to be critical to the environment (metals, cyanides, sulphide and general bacteria). Almost all the companies have not yet exact data about the efficiency of each kind of environmental treatment because it is new ones and are just in follow-up and consequently they have not yet parameters to change the adequate the steps of the treatment, because

  12. Evaluation of the reconstruction method and effect of partial volume in brain scintiscanning; Avaliacao do metodo de reconstrucao e efeito do volume parcial em cintilografia cerebral

    Energy Technology Data Exchange (ETDEWEB)

    Pinheiro, Monica Araujo

    2016-10-01

    Alzheimer's disease is a neurodegenerative disorder, on which occurs a progressive and irreversible destruction of neurons. According to the World Health Organization (WHO) 35.6 million people are living with dementia, being recommended that governments prioritize early diagnosis techniques. Laboratory and psychological tests for cognitive assessment are conducted and further complemented by neurological imaging from nuclear medicine exams in order to establish an accurate diagnosis. The image quality evaluation and reconstruction process effects are important tools in clinical routine. In the present work, these quality parameters were studied, and the effects of partial volume (PVE) for lesions of different sizes and geometries that are attributed to the limited resolution of the equipment. In dementia diagnosis, this effect can be confused with intake losses due to cerebral cortex atrophy. The evaluation was conducted by two phantoms of different shapes as suggested by (a) American College of Radiology (ACR) and (b) National Electrical Manufacturers Association (NEMA) for Contrast, Contrast-to-Noise Ratio (CNR) and Recovery Coefficient (RC) calculation versus lesions shape and size. Technetium-99m radionuclide was used in a local brain scintigraphy protocol, for proportions lesion to background of 2:1, 4:1, 6:1, 8:1 and 10:1. Fourteen reconstruction methods were used for each concentration applying different filters and algorithms. Before the analysis of all image properties, the conclusion is that the predominant effect is the partial volume, leading to errors of measurement of more than 80%. Furthermore, it was demonstrate that the most effective method of reconstruction is FBP with Metz filter, providing better contrast and contrast to noise ratio results. In addition, this method shows the best Recovery Coefficients correction for each lesion. The ACR phantom showed the best results assigned to a more precise reconstruction of a cylinder, which does not

  13. Evaluation of morphological changes of the skin after radiation-induced injury in Wistar rats;Avaliacao de alteracoes morfologicas da pele apos lesao radioinduzida em ratos Wistar

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Cherley Borba Vieira de

    2010-07-01

    irradiated area. The optical microscope verified the early development of lesions in the 5 days group. After 10 days of irradiation it was already possible to see evidences of epidermal healing under the crust formed by the lesion. At 15 days after irradiation the tissue beneath the lesion had reconstructed epidermis. It was also observed the characteristics of tissue healing. It was also seen a significant polymorphonuclear cells infiltration. After 25 days at the higher doses the lesions remained, which did not occur at the lower dose, where the irradiated area of the animals were already completely healed. After 100 days of irradiation at 40Gy dose the wound was healed with the emergence of a well defined healed tissue. At the 60Gy dose, the lesion persisted in some animals, and in those that healing occurred the epidermis was a hypertrophied (acanthosis). It was visualized a tissue with their morphological aspect completely mis characterized, where it's possible to view a necrotic tissue. The results of the scanning electron microscopy analysis corroborate with the in optical microscopy findings, where it's possible to visualize the distortion of collagen fibers at the higher dosages. The results indicate that the used doses induced an important skin inflammatory process, activating the immune system. This fact leads to an increase in the expression of TGF beta1, one of the responsible for the increased production of extracellular matrix (ECM) by various cell types, mainly fibroblasts in injured tissues. Besides the increased expression of ECM, the TGF beta1 also promotes the inhibition of the degradation processes of the same. The intense expression of cytokines in irradiated skin can trigger the fibrosis process; consequently, affect the homeostasis of this organ due to the accumulation of ECM. (author)

  14. Sacroiliitis: imaging evaluation; Sacroiliite: avaliacao por imagem

    Energy Technology Data Exchange (ETDEWEB)

    Montandon, Cristiano; Teixeira, Kim-Ir-Sen Santos [Clinicas da Imagem e Multimagem, Goiania, GO (Brazil); Costa, Marlos Augusto Bitencourt; Carvalho, Tarcisio Nunes; Montandon Junior, Marcelo Eustaquio [Universidade Federal de Goias, Goiania, GO (Brazil). Faculdade de Medicina. Dept. de Diagnostico por Imagem]. E-mail: cmontandon@terra.com.br

    2007-01-15

    Sacroiliitis is a non-infectious inflammatory process involving the sacroiliac joint, and is a diagnostic criterion for seronegative spondyloarthropathies. Imaging methods are of great value for confirming the diagnosis of this condition. The present study is a review of cases included in didactic files and in the literature to illustrate the anatomy, techniques, and main imaging findings in x-ray, computed tomography and magnetic resonance imaging for determining the diagnosis of sacroiliitis, also approaching main differential diagnoses. (author)

  15. Energy management in wooden industry; Gestao energetica em industrias madeireiras

    Energy Technology Data Exchange (ETDEWEB)

    Cagnon, Jose Angelo; Valarelli, Ivaldo de Domenico; Rodrigues, Ricardo Martini [Universidade Estadual Paulista (UNESP), Bauru, SP (Brazil). Fac. de Engenharia. Dept. de Engenharia Eletrica], Emails: jacagnon@feb.unesp.br, ivaldo@feb.unesp.br, martini@feb.unesp.br

    2006-07-01

    The objective of this work is the use of a methodology developed for the evaluation of the energy performance in wooden plants, aiming the application of a energy management program, for products and processes improvement, observing a reliable technical and economic implementation. (author)

  16. Energy efficiency in public buildings; Eficiencia energetica em predios publicos

    Energy Technology Data Exchange (ETDEWEB)

    Kiperstok, Asher; Garcia, Agenor Gomes Pinto; Vianna, Luis Gustavo; Freitas, Daniela; Oliveira, Braulio; Azevedo, Alexandre; Alves, Igor; Fagundes, Vitor Lacerda [Universidade Federal da Bahia (TECLIM/UFBA), Salvador, BA (Brazil). Rede de Tecnologias Limpas

    2010-07-01

    The implementation process of a energy management system in buildings of the Bahia state administration is presented. Completed a first phase, with a prior knowledge of the characteristics of the energy use in buildings and the implementation of a daily consumption monitoring system (the Vianet), a second phase begins with the definition of consumption targets and mobilization actions of the people, both the whole of the users, and more strongly the 'eco team', group which shall be responsible for the management. This paper makes a theoretical consideration on the use of energy in buildings, showing the room for energy management in addition to the simple exchange by efficient equipment, estimates the reduction obtained by the energy efficiency program of the electric utility with the exchange of light fixtures and air conditioners, shows the targeting process and difficulties found and identifies measures that will be implemented to achieve increasingly efficient patterns of energy use. (author)

  17. Energetic efficiency and innovation; Eficiencia energetica e inovacao

    Energy Technology Data Exchange (ETDEWEB)

    Aragao Neto, Raymundo Moniz de [Empresa de Pesquisa Energetica (EPE), Rio de Janeiro, RJ (Brazil)], e-mail: raymundo.aragao@epe.gov.br

    2008-07-01

    The article presents the role of energy efficiency as facilitator of innovation associated processes. Several aspects are presented, demonstrating that actions oriented to the increase of energy efficiency in end use bring, directly, the necessity of new practices and technologies, innovative at least in a specific context. (author)

  18. Wrong directions of the energetic policy; Descaminhos da politica energetica

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Joaquim Francisco

    1997-12-31

    The energetic planning should take an important role in the formulation of the economic and social development policy of any country. This work presents the opinion of the author in relation to this issue in what concerns the Brazilian experience. Several actions considered wrong by the author, which were taken by the government in what concerns energetic policy are presented and their expected consequences in the near future are discussed 6 refs., 1 tab.

  19. Energy efficiency in boilers; Eficiencia energetica em caldeiras

    Energy Technology Data Exchange (ETDEWEB)

    Ponte, Ricardo Silva The [Universidade Federal do Ceara (UFCE), Fortaleza, CE (Brazil). Dept. de Engenharia Eletrica], email: ricthe@dee.ufc.br; Barbosa, Marcos Antonio Pinheiro; Rufino, Maria da Gracas [Universidade de Fortaleza (UNIFOR), CE (Brazil). Dept. de Engenharia Eletrica], emails: marcos_apb@unifor.br, gsrufino@unifor.br

    2010-07-01

    The boiler is vapor generator equipment that has been widely used in industrial milieu as in electric energy generation in thermoelectric plants. Since their first conception, the boilers have been changed in order to provide security and energetic efficiency. They can present high losses of energy if they don't be operated according to some criteria. A considerable part of boilers operation cost include fuel expenses. So, the adoption of effective steps in order to reduce fuel consumption is important to industry economy, besides it brings environmental benefits through the reduction of pollution liberation. The present article has the objective of emphasizing the effective steps for the economy of energy in boilers, such as, the regulation of combustion; the control of soot and incrustations; the installation of economizers, air heaters and super heaters; the reduction in purges and reintroduction of condensed steam. (author)

  20. Information system on energy; Sistemas de informacoes energeticas

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Claudio Bezerra de [Universidade do Estado da Bahia, Salvador, BA (Brazil)]. E-mail: claudiobcarvalho@yahoo.com.br; Bajay, Sergio Valdir [Universidade Estadual de Campinas, SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico (NIPE); Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Mecanica. Dept. de Energia]. E-mail: bajay@fem.unicamp.br

    2006-07-01

    This work sets guidelines for the development of a National System of Information on Energy, a System of Executive Information and a System of Geographic Information, all for the Ministry of Mines and Energy, considering the current level of technology in the development of computer systems and the advantages accruing from the implementation of such systems for the energy industry agents and for the Ministry management. The applications of such systems and the main concepts and characteristics involved in their implementation are presented. (author)

  1. Analysis of results from intercomparison among Spanish laboratories involved of photon energy ''137 Cs for environmental dosimetry laboratories

    International Nuclear Information System (INIS)

    Gonzalez, A.M.; Brosed, A.; Salas, R.

    2003-01-01

    Any environmental thermoluminescent dosemeter (TLD) system must be periodically calibrated at a calibration laboratory. In this frame, the Consejo de Seguridad Nuclear (CSN) has performed an intercomparison among Spanish laboratories involved in environmental monitoring, by means of TLD, in order to verify the traceability of the whole dosimeter and reader to the national standard for the protection quantities of interest for a given photon energy (''137Cs). To achieve this goal the CSN asked the Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT) to carry out the reference irradiations in the energy above mentioned at the lonising Radiations Metrology Unit headquarters. Nine laboratories have participated. All the dosemeters were irradiated with the same air kerma rate. The radiological quantity used was the ambient dose equivalent, H (10), and the values of this quantity assigned to each laboratory were between 210 and 360 μSv. All the dosemeters of the participating laboratories met the two analysis criteria used. All of them demonstrated a satisfactory fulfilment of the requirements established by so called trumpet curves and of the requirements established by the ANSI 1311. (Author) 7 refs

  2. Electrical limitations to energy resolution in semiconductor particle detectors; Limitations electriques du pouvoir de resolution en energie des detecteurs a semi-conducteurs; Ehlektricheskie ogranicheniya razreshayushchej sposobnosti po ehnergii v poluprovodnikovykh detektorakh chastits; Limitaciones electricas en la resolucion energetica de detectores de particulas a base de semiconductores

    Energy Technology Data Exchange (ETDEWEB)

    Hansen, W L; Goulding, F S [Lawrence Radiation Laboratory, University of California, Berkeley, CA (United States)

    1962-04-15

    electrode avec anneau de garde qui fait partie integrante de l'instrument et qui a pour effet d'eliminer dans une large mesure le bruit du aux fuites en surface. Le memoire fournit des donnees experimentales relatives aux fuites et au pouvoir de resolution en energie qui concordent parfaitement avec la theorie. La limite theorique du bruit, exprimee en largeur totale a mi-hauteur du maximum, est de l'ordre de 7 a 10keV pour les detecteurs au silicium type p de 1 cm{sup 2}, a une temperature de 25{sup o}C. (author) [Spanish] Los autores parten de la suposicion de que el ruido de fondo de un detector basado en un semiconductor se debe unicamente a este ultimo, y presentan ecuaciones que indican los limites teoricos del ruido en las combinaciones detector-amplificador. Estas ecuaciones demuestran la existencia de valores optimos en las constantes de tiempo del amplificador y en la polarizacion del detector, para los que el ruido minimo es independiente de la resistividad del semiconductor. Los autores demuestran que el funcionamiento optimo de un sistema detectoramplificador depende unicamente del area del detector, de la capacidad de entrada (menos la capacidad del detector), de la vida media de los portadores minoritarios del semiconductor, y de la transconductancia de la valvula de entrada del amplificador. La memoria describe la estructura de un nuevo detector que incluye como parte integral un electrodo de anillo de guarda cuyo efecto es eliminar en gran parte el ruido que ocasionan las fugas superficiales. Presentan los resultados obtenidos experimentalmente para las perdidas en el detector y la resolucion energetica, que concuerdan satisfactoriamente con los valores teoricos. El limite teorico del ruido expresado como anchura del pico a la mitad de su amplitud esta comprendido entre 7 y 10keV para detectores de silicio del tipo p, de 1 cm{sup 2} a 25{sup o}C. (author) [Russian] Iskhodya iz gipotezy, chto proizvodimyj poluprovodnikovym detektorom shum vyzyvaetsya

  3. Analysis

    DEFF Research Database (Denmark)

    Mathiesen, Brian Vad; Liu, Wen; Zhang, Xiliang

    2014-01-01

    three major technological changes: energy savings on the demand side, efficiency improvements in energy production, and the replacement of fossil fuels by various sources of renewable energy. Consequently, the analysis of these systems must include strategies for integrating renewable sources...

  4. Safety analysis for the Abadia de Goias repository: alternative evaluation of the ingestion dose rate critical distance; Analise de seguranca para o repositorio de Abadia de Goias: avaliacao alternativa da distancia critica de taxa de dose de ingestao

    Energy Technology Data Exchange (ETDEWEB)

    Martin Alves, A.S. de; Passos, E.M. dos [NUCLEN, Rio de Janeiro, RJ (Brazil)

    1995-12-31

    An alternative calculation of the ingestion dose rate critical distance due to a hypothetical release of Cs-137 from the structure of the Repository of Abadia de Goias is presented. The release pathway considers the repository - groundwater region - well - and food chain. The main adopted modification comparing to the previous work is the inclusion of the convective and molecular diffusion terms in the radionuclide transport equation in addition to the radioactive decay term. (author). 6 refs, 1 tab.

  5. Use of radiological evaluation system from the Instituto de Radioprotecao e Dosimetria in the analysis of recent radiation accidents; Utilizacao do sistema de avaliacao radiologica do Instituto de Radioprotecao e Dosimetria na analise de acidentes radiologicos recentes

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Rodolfo Julio da

    2013-07-01

    The response to an emergency situation involving ionizing radiation requires the joint participation of professionals from various kind of knowledge, belonging to public and private organizations (in the local, state and federal levels). The theme radiation tends to be an additional challenging factor - considering that it's, usually, remembered for its macabre and ominous aspect, in spite of the benefits provided by it - which makes the implementation of actions to protect the public, emergency professionals, the environment and property, very difficult. To this, we can add the complicating factor that, in most cases, the technician (holder of basic or advanced on the subject) is far !Tom the place where this action unfolds. The accident/incident takes the form of a radioactive source (sometimes orphaned, one that gone astray or even stolen) that is found by a person unaware of the risks to which they are being exposed or, let not forget about it, the non-observance of safety standards in industries and workplaces, by their own operators. Thus, before integrating emergency response plans with conventional plans specific to the prompt response to radiological emergencies, it is necessary that some measures had been anticipated and that some actions had, already, been planned - with the intention of mitigate health, psychological and economical damage, in ali of kind. To do this, since in the course of the second decade of the second millennium, and since you own a portable personal computer (Note or Netbook), or even with a mobile device (cellular) with a bit more resources, both of them previously updated, a responder (or even a qualified technician that is next to that fact) may already guide, at least, about a safety distances !Tom the source. Since he had knowledge about some characteristics of the source (its individual data), he can plan ahead about the possible serious situation that unfolds itself and emergency responders will find, when it get to the site. With the situation assessments done, the formal emergency team triggered will can prepare itself (with personnel and technical-materials facilities) to resolve the incident in the shortest time and with the least possible risks. (author)

  6. Application of the Pinch analysis for the design of a cogeneration system in a paper mill; Aplicacion del analisis Pinch para el diseno de un sistema de cogeneracion en una industria papelera

    Energy Technology Data Exchange (ETDEWEB)

    Mani Gonzalez, A. G.; Arriola Medellin, A. [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    The Pinch Analysis is a set of principles, tools and rules for the design that allow the engineer find the best way to configure the elements of a process. In the last ten years it has been utilized for the design of new processes as well as in the energy optimization of existing processes. In this paper the tools utilized for the integration of a cogeneration system in a process for the production of paper is presented. It is also presented how the combined treatment of the Pinch Analysis and the exergy concept allows to define, before the detailed design, the cogeneration potential, the fuel consumption and the amount of pollutant emissions for different cogeneration schemes. [Espanol] El analisis Pinch es un conjunto de principios, herramientas y reglas de diseno que permiten al ingeniero encontrar la mejor manera de configurar los elementos de un proceso. En los ultimos diez anos se ha utilizado para el diseno de procesos nuevos asi como en la optimacion energetica de procesos existentes. En el presente articulo se presentan las herramientas utilizadas para la integracion de un sistema de cogeneracion en un proceso de produccion de papel. Se muestra tambien como el tratamiento combinado del analisis Pinch y el concepto de energia permite definir, antes del diseno detallado, el potencial de cogeneracion, el consumo de combustible y la cantidad de emisiones contaminantes para diferentes esquemas de cogeneracion.

  7. Application of the Pinch analysis for the design of a cogeneration system in a paper mill; Aplicacion del analisis Pinch para el diseno de un sistema de cogeneracion en una industria papelera

    Energy Technology Data Exchange (ETDEWEB)

    Mani Gonzalez, A G; Arriola Medellin, A [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1998-12-31

    The Pinch Analysis is a set of principles, tools and rules for the design that allow the engineer find the best way to configure the elements of a process. In the last ten years it has been utilized for the design of new processes as well as in the energy optimization of existing processes. In this paper the tools utilized for the integration of a cogeneration system in a process for the production of paper is presented. It is also presented how the combined treatment of the Pinch Analysis and the exergy concept allows to define, before the detailed design, the cogeneration potential, the fuel consumption and the amount of pollutant emissions for different cogeneration schemes. [Espanol] El analisis Pinch es un conjunto de principios, herramientas y reglas de diseno que permiten al ingeniero encontrar la mejor manera de configurar los elementos de un proceso. En los ultimos diez anos se ha utilizado para el diseno de procesos nuevos asi como en la optimacion energetica de procesos existentes. En el presente articulo se presentan las herramientas utilizadas para la integracion de un sistema de cogeneracion en un proceso de produccion de papel. Se muestra tambien como el tratamiento combinado del analisis Pinch y el concepto de energia permite definir, antes del diseno detallado, el potencial de cogeneracion, el consumo de combustible y la cantidad de emisiones contaminantes para diferentes esquemas de cogeneracion.

  8. Evaluation of analysis method standardless by WDXRF and EDXRF of aluminum powder used in MTR type fuel

    International Nuclear Information System (INIS)

    Scapin, Valdirene O.; Salvador, Vera L.R.; Cotrim, Marycel E.B.; Pires, Maria A.F.; Scapin, Marcos A.

    2011-01-01

    The nuclear fuel used in IEA-R1m reactor at the Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN/SP) is the MTR type. This fuel is compound of a core (U 3 Si 2 -Al dispersion briquette) wrapped in an aluminum plate with two cladding (superior and inferior) both in aluminum. The fuel element efficiency depends on the quality control of U 3 Si 2 and aluminum. For aluminum should be checked the impurities levels such as Si, Mn, Fe, Co, Cu, Zn and others and Al total . Aiming to provide a quick method, multielemental and non-destructive, the performance of the wavelength dispersive (WDXRF) and energy dispersive (EDXRF) X-ray fluorescence techniques, using the curve instrument sensitivity curve method, also known like standard less analysis, was evaluated. This method allows the determination from the element boron (Z=5) to uranium (Z=92) with concentrations ranging from 0.001 to 99.99% without the need for individual calibration curve and chemical pretreatments in the sample preparation. The results were compared with calibration curve method data, using statistical tests tools. By multivariate analysis of all the experimental data, especially by the discriminant analysis (DA) and cluster analysis (CA), respectively, it was possible to evaluate a correlation between variables of the applied analytical methods could be interpreted in context to qualify the fuels by XRF technique and method standard less. The results showed that the proposed method is satisfactory for both spectrometers; however it was found that the WDXRF presents the greatest conformity degree. (author)

  9. Analysis of energy dependence of the film radiochromic XRQA2 for seven spectra of X-ray standard in diagnostic radiology; Analisis de la dependencia energetica de la pelicula radiogromica XRQA2 para siete espectros de rayos X habituales en radiodiagnostico

    Energy Technology Data Exchange (ETDEWEB)

    Vicent Granado, D.; Gutierrez Ramos, S. M.; Sanchez Carmona, G.; Santos Rubio, A. J.; Herrador Cordoba, M.

    2013-07-01

    The response of the radiochromic film XRQA2 depends on the peak voltage, as well as filtration and measurement with or without backscatter. The common method of using a calibration from the kerma in air to measure the dose at the entrance of patients is not the most advisable for this film in this dose range. Whenever possible should be the calibration with the spectrum of X rays for which will be the measurement of absorbed dose. (Author)

  10. Evaluation of the effects of gamma radiation in minimally processed vegetables of Brassica oleracea species; Avaliacao dos efeitos da radiacao gama em vegetais da especie Brassica oleracea minimamente processados

    Energy Technology Data Exchange (ETDEWEB)

    Nunes, Thaise Cristine Fernandes

    2009-07-01

    The consumption of collard greens (Brassica oleracea cv. acephala) and broccoli (Brassica oleracea L. var. italica) has been inversely associated with morbidity and mortality caused by degenerative diseases. These species are highly consumed in Brazil, which enables its use as minimally processed (MP). The growing worldwide concern with the storage, nutritional quality and microbiological safety of food has led to many studies aimed at microbiological analysis, vitamin and shelf life. To improve the quality of these products, radiation processing can be effective in maintaining the quality of the product, rather compromising their nutritional values and sensory. The aim of this study was to evaluate the effectiveness of gamma radiation from {sup 60}Co at doses of 0, 1.0 and 1.5 kGy on the reduction of microbiota in these plants, and analyze their nutritional and sensory characteristics. The methodology used in this study was microbiological analysis, colorimetric analysis, analysis of phenolic compounds, antioxidant analysis and sensory analysis. The microbiological analysis showed a decrease in the development of populations of aerobic microorganisms, psychotropic and yeast and mold with increasing doses of radiation. The sensory analysis showed no significant difference between different times of cooking analyzed. The analysis of phenolic compounds, significant differences between the samples, suggesting that with increasing dose of irradiation was an increase in the amount of phenolic compounds found in broccoli and collard greens MP. It can be observed that the sample of control collard greens showed high antioxidant activity and for the samples treated by irradiation was a decrease of percentage. In contrast the samples of broccoli show an increase in the rate of scavenging DPPH with increase of the dose of radiation. The colorimetric analysis revealed that for samples of MP collard greens and broccoli foil of no significant differences, but for samples of

  11. Characterization and evaluation of employment of nanostructured spinel MA on oxidation resistance of graffiti; Caracterizacao e avaliacao do emprego de espinelio MA nanoestruturado na resistencia a oxidacao de grafites

    Energy Technology Data Exchange (ETDEWEB)

    Vitor, P.A.M.; Guaglianoni, W.C.; Braganca, S.R.; Bergmann, C.P., E-mail: pedroaugusto89@hotmail.com [Universidade Federal do Rio Grande do Sul (LACER/UFRS), Porto Alegre, RS (Brazil). Laboratorio de Materiais Ceramicos

    2016-07-01

    This study aimed to investigate the obtaining of nanostructured powders of spinel MA (MgAl2O4) via synthesis of combustion in solution (SCS), and the influence of its incorporation in oxidation resistance in natural graphites. The crystalline phase only was obtained after a heat treatment at 900 ° C of the powder as-synthesized. The powders were characterized by differential thermal analysis (DTA) and thermogravimetric (ATG) and crystallographic analysis by X-ray diffraction (XRD) and Raman spectroscopy. The results, using thermogravimetric dynamic and isothermal analysis showed a relationship between embedded content of spinel (as-synthesized and calcined) and the raising of the temperature to start the oxidation process (onset temperature) of the samples. The rate of oxidation is reduced at temperatures from 700 ° C, retarding the oxidation of graphite with increasing level of spinel, but this effect ceases at temperatures above 1000 ° C. (author)

  12. Evaluation of thermal properties of nanocomposites based on Ecobras matrix and vermiculite modified with alkyl phosphonium salt; Avaliacao das propriedades termicas dos nanocompositos de Ecobras e vermiculita modificada com sal alquil fosfonio

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Marcelo F.L. de; Leite, Marcia C.A.M., E-mail: marceloilha@gmail.com [Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ (Brazil); Braga, Fernanda C.F.; Oliveira, Marcia G. [Instituto Nacional de Tecnologia (INT), Rio de Janeiro, RJ (Brazil)

    2015-07-01

    The use of biodegradable polymers for producing nanocomposites with mineral fillers fetch the production of new materials with low cost and reduced environmental impact, combined with improvements in the mechanical and thermal properties. Nanocomposites based on Ecobras and vermiculite (VMT) modified with hexadecyl tributyl phosphonium bromide (Ph-VMT) were prepared by melt intercalation. The intercalation of Ph-VMT in Ecobras was characterized by X-ray diffraction (XRD). The thermal properties of Ecobras and their compositions were characterized by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). The addition of VMT and Ph- VMT in Ecobras increases the crystallization temperature (Tc) and crystalline melting (Tm), as observed by DSC analysis. The result of the thermogravimetric analysis showed that the addition of Ph-VMT in Ecobras improved thermal stability of the nanocomposite. (author)

  13. Evaluating factorial kriging for seismic attributes filtering: a geostatistical filter applied to reservoir characterization; Avaliacao da krigagem fatorial na filtragem de atributos sismicos: um filtro geoestatistico aplicado a caracterizacao de reservatorios

    Energy Technology Data Exchange (ETDEWEB)

    Mundim, Evaldo Cesario

    1999-02-01

    In this dissertation the Factorial Kriging analysis for the filtering of seismic attributes applied to reservoir characterization is considered. Factorial Kriging works in the spatial, domain in a similar way to the Spectral Analysis in the frequency domain. The incorporation of filtered attributes via External Drift Kriging and Collocated Cokriging in the estimate of reservoir characterization is discussed. Its relevance for the reservoir porous volume calculation is also evaluated based on comparative analysis of the volume risk curves derived from stochastic conditional simulations with collocated variable and stochastic conditional simulations with collocated variable and stochastic conditional simulations with external drift. results prove Factorial Kriging as an efficient technique for the filtering of seismic attributes images, of which geologic features are enhanced. The attribute filtering improves the correlation between the attributes and the well data and the estimates of the reservoir properties. The differences between the estimates obtained by External Drift Kriging and Collocated Cokriging are also reduced. (author)

  14. Energy analysis of a solar advanced refrigeration system; Analisis energetico de un sistema de refrigeracion solar avanzado

    Energy Technology Data Exchange (ETDEWEB)

    Velazquez Limon, Nicolas [Universidad Autonoma de Baja California (Mexico); Best y Brown, Roberto [Universidad Nacional Autonoma de Mexico, Temixco, Morelos (Mexico)

    2000-07-01

    In this article is presented a solar refrigeration system that integrates the more recent and important technological advances of the training solar systems (SCS) and of the advanced absorption units. An analysis and evaluation is made of the energy behavior of the absorption system with heat exchanger absorber-generator (GAX), air cooled and assisted by a hybrid power plant natural gas-solar. Given the characteristic of high not-linearity of the resulting system of occupations, the proposed methodology contemplates a calculation sequence for the external currents and an iterative procedure for the internal currents. The unit was designed with a capacity of 10.6 kw (3 tons.) of cooling and uses ammonia-water as working fluid. Giving priority to internal energy integration, an arrangement of the GAX cycle is proposed, that allows 19% of solar contribution at full load, being able to be greater at partial loads. In spite of using as cooling means air at 40 Celsius degrees with a relative humidity of 24%, a COP of 0.86 in the cooling mode was obtained and 1.86 in the heating mode, with an internal energy integration of 1013 kJ/min, 37% more of the energy that is supplied in the generator. The massic flow rates of the GAX cycle were compared with those of a basic cycle, resulting 73% and 62% lower for the circulation rate and for the flow rate, respectively. [Spanish] En este articulo se presenta un sistema de refrigeracion solar que integra los avances tecnologicos mas recientes e importantes de los sistemas de capacitacion solar (SCS) y de las unidades de absorcion avanzadas. Se realiza un analisis y evaluacion del comportamiento energetico del sistema de absorcion con intercambio de calor absorbedor-generador (GAX), enfriado por aire y asistido por una fuente de energia hibrida gas natural-solar. Dada la caracteristica de alta no-linealidad del sistema de ocupaciones resultante, la metodologia propuesta contempla una secuencia de calculo para las corrientes externas

  15. Evaluation of radiation protection parameters in dental radiography in the State of Rio de Janeiro, Brazil; Avaliacao de parametros de radioprotecao em radiologia odontologica no Estado do Rio de Janeiro

    Energy Technology Data Exchange (ETDEWEB)

    Dovales, Ana Cristina M; Oliveira, Sergio L. Girao de; Cucco, Antonio Carlos S; Bezerra, Marcos Antonio; Mota, Helvecio C [Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, RJ (Brazil). Dept. de Fisica Medica

    2001-07-01

    This paper presents the results obtained in a program for the postal evaluation of radiation protection parameters in dental radiography in the state of Rio de Janeiro. The postal kit contains a radiographic film and two pairs of thermoluminescent dosimeters separated by a 3 mm aluminium filter and is accompanied by a questionnaire about equipment characteristics and exposition parameters. The analysis of 2596 equipment in the last three years showed that near half of the examinations produces doses higher than the diagnostic reference level established by the health authorities for this kind of examination. Field diameter is within the acceptable range in 73,5% of the tests and total filtration is higher than 1,5 mm Al equivalent in 86,64% of the cases. Comparing with earlier results this analysis suggests that radiation protection conditions in dental radiography are improving in the state of Rio de Janeiro. (author)

  16. Evaluation of home-made teas efficiency from medicinal plants used on childish diarrhea treatment; Avaliacao da eficacia de chas caseiros de plantas medicinais utilizados no tratamento da diarreia infantil

    Energy Technology Data Exchange (ETDEWEB)

    Pinto, Magda Moreira; Silva, Maria Jose de Sousa Ferreira da [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Dept. de Quimica; Vilhena Schayer Sabino, Claudia de; Amaral, Angela Maria [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, MG (Brazil)

    1996-03-01

    The objective of this work is to verify whether the home-made teas form Brazilian plants, used for control of childish diarrhea have been efficient reaching the composition recommended by World Health Organizations (WHO). This work has been carried out using the neutron activation analysis and the TRIGA MARK I reactor, the IPR-R1, in the Centro de Desenvolvimento da Tecnologia Nuclear - CDTN. (author). 4 refs., 2 tabs.

  17. Chemical composition and evaluation of allelopathic potentials of Adiantum tetraphyllum Humb.and Bonpl. Ex. Willd (Pteridaceae); Constituintes quimicos e avaliacao do potencial alelopatico de Adiantum tetraphyllum Humb. and Bonpl. Ex. Willd (Pteridaceae)

    Energy Technology Data Exchange (ETDEWEB)

    Melos, Jorge L.R. [Colegio Militar de Campo Grande, MS (Brazil). Secao de Ensino ' C' ; Silva, Luciana B.; Peres, Marize T. L. P.; Mapeli, Ana M.; Faccenda, Odival; Anjos, Hatino H.; Torres, Thais G.; Tiviroli, Soraia C.; Batista, Ana L.; Almeida, Felipe G. N.; Flauzino, Natasha S.; Tibana, Leticia A.; Hess, Sonia C. [Universidade Federal de Mato Grosso do Sul, Campo Grande, MS(Brazil). Dept. de Hidraulica e Transportes; Honda, Neli K. [Universidade Federal de Mato Grosso do Sul, Campo Grande, MS (Brazil). Dept. de Quimica]. E-mail: schess@nin.ufms.br

    2007-03-15

    Chemical studies of green leaves of A. tetraphyllum afforded {beta}-sitosterol, a mixture containing the ethyl esters of long chain carboxylic acids, 30-normethyl-lupan-20-one, hopan-22-ol, phytol, phyten-3(20)-1,2-diol, quercetin and quercetin-3-O-{beta}-D-glucoside. The structures of the compounds were elucidated by spectroscopic and GC analysis. The allelopathic potentials of the crude ethanolic extract and fractions were evaluated against Lactuca sativa (letuce) and Allium cepa (onion) seeds. (author)

  18. Use of the 3DVH Software as a complementary method of IMRT pretreatment evaluation; Utilizacao do Software 3DVH como metodo complementar de avaliacao de pre-tratamento de IMRT

    Energy Technology Data Exchange (ETDEWEB)

    Lyra, Jesse G.P.; Bruning, Fabio F.; Funchal, Melissa; Toledo, Hugo V.; Bornatto, Pricila; Fernandes, Tatiane C.O., E-mail: jesse_lyra@hotmail.com [Hospital Erasto Gaertner / Liga Paranaense de Combate ao Cancer (LPCC), Departamento de Radioterapia, Curitiba, PR (Brazil)

    2013-04-15

    The aim of this study is to compare the method of treatment planning evaluation for IMRT using the gamma index to the method of the 3DVH Software. The 3DVH Software was used with the MapCheck2 detector 2D array under a 6MV x-ray beam of linear accelerator equipped with 120 leafs MLC. Nine treatment plans of prostate patients chose randomly and fully anonimatize were performed in the Eclipse planning system, using the AAA calculation algorithm in IMRT sliding window technique. These plans were approved and treated according to the gamma analysis criteria of the institution. The comparisons were made in absolute dose and normalized at maximum dose for each field and then with the 3DVH Software the Dmax, Dmean, D15%, D25%, D35% and D50% parameters for the bladder and rectum, Dmean for the bulb, Dmax for the femur and D95% for the PTV were evaluated. In the planar analysis by field, the plans studied had a minimum of 97.5% approval. The PTV-related differences have relative variation from 1.3 to 2.2%, that is, greater coverage than expected for this structure. For the organs at risk, the relative differences observed were between -5.3 to 25.8%, which could result in a non-approved plan if these variations are close to the clinical tolerances of the OAR. The results show that even a plan compatible with greater than or equal to 95% of the points, the gamma analysis does not give enough information if this plan can or cannot be approved for treatment and that there is a need for more detailed verification of the plan which considers not only the planar evaluation, but also the evaluation of the DVH measured, and the 3DVH Software proved be adequate for this analysis. (author)

  19. Gamma radiation effect on tocopherol content in natural and industrialized products and sensory evaluation; Efeito da radiacao gama sobre o conteudo de tocoferois em produtos naturais e industrializados e avaliacao sensorial

    Energy Technology Data Exchange (ETDEWEB)

    Taipina, Magda Sinigallia

    2009-07-01

    Vitamin E content, the percentage of activity retention and the sensory characteristics were analyzed in samples of vitamin E rich foods: pecan nuts, whole grain cookies and a fortified powder formula irradiated with 1 and 3 kGy of {sup 60}Co gamma radiation. For the vitamin E determination (as -tocopherol equivalents) three different samples lots were employed using the colorimetric method standardized by the Instituto Adolfo Lutz of Sao Paulo. For sensory analysis, the Multiple Comparison or Control Difference Test was used for all products, comparing the irradiated samples to the non-irradiated controls and measuring the difference rate in total terms, concerning appearance, odor, texture and flavor, in a category scale of 9 points, ranging from 1 = no difference to 9 = extreme difference to the control. The experimental outline employed was that of randomized complete blocks design, in two consecutive sessions. The obtained data were submitted to variance analysis, ANOVA, and means comparison by Dunnett test, at 5% significance. The results show that there was no E vitamin loss in the pecan nuts, whole grain cookies and powder food samples, irradiated with 1 and 3 kGy doses. With regard to the sensory analysis, the 3 kGy gamma irradiation produced significant changes in the sensory properties of pecan nuts for the attributes: appearance, odor, texture and flavor. The 1 kGy dose did not cause a significant difference for these attributes. Concerning the sensory analysis of whole grain cookies and fortified powder food, significant differences were observed in all the irradiated products, although the difference grades were significantly low, compared to those of the non-irradiated samples, especially when 1 kGy dose was applied. (author)

  20. Economic evaluation of photovoltaic electric power generation connected to the grid in deregulated electric power markets; Avaliacao economica da geracao de energia eletrica fotovoltaica conectada a rede em mercados eletricos desregulados

    Energy Technology Data Exchange (ETDEWEB)

    Zumaran, David Richard Orosco

    2000-12-01

    This work presents an analysis of economic, tariff and regulating issues related to the introduction of Grid Connected Photovoltaic Systems in a deregulated electric market context; a case study for the peruvian electric market is realized. Based on the pricing system of the electric market, it is developed an economic assessment model that can be used by institutions interested in promoting this technology for generating electricity. (author)

  1. Evaluation of epileptogenic focus in temporal lobe: correlation between ictal brain SPECT, magnetic resonance imaging and magnetic resonance spectroscopy; Avaliacao de foco epileptogenico do lobo temporal: correlacao entre SPECT ictal, ressonancia magnetica e ressonancia magnetica com espectroscopia de protons

    Energy Technology Data Exchange (ETDEWEB)

    Diegues, Maria Elena Martins [Hospital Universitario Clementino Fraga Filho, Rio de Janeiro, RJ (Brazil). Servico de Medicina Nuclear]. E-mail: emartyns@terra.com.br; Pellini, Marcos Pinto; Alves-Leon, Soniza Vieira [Universidade Federal, Rio de Janeiro, RJ (Brazil). Faculdade de Medicina; Domingues, Romeu Cortes [Clinica de Diagnostico por Imagem (CDPI), Rio de Janeiro, RJ (Brazil)

    2004-02-01

    The purpose of this study was to determine the degree of concordance between radiological and radioisotopic methods and, if positive, to evaluate the usefulness of ictal SPECT in the localization of the epileptogenic focus. Ictal brain SPECT, magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS) were performed on six patients with refractory temporal lobe epilepsy. Ictal SPECT was performed after withdrawal of the anti-epileptogenic drugs during video-EEG monitoring, using {sup 99m}Tc-ECD, administered to patients at the time of the ictus. MRI was performed in T1, T2 and FLAIR sequences and MRS was obtained using the PRESS technique, with a single voxel positioned in both hippocampi. The statistical analysis included the determination of the values of Kappa (k), standard error (se) and significance level (p) for the lateralization of the ictal focus. The analysis of all findings was based on EEG localization of the ictal discharge, seizure duration (109-280 s; 152 s average) and time of radiotracer injection (30-262 s; 96 s average). We obtained correlated data in four patients (67 per cent) and values of k = 0.67, se = 0.38, and p 0.041. We concluded that there is a concordance between ictal SPECT, MRI and MRS data and the usefulness of the radioisotopic procedure is related to a non diagnostic EEG and when there is a discordant or misleading diagnosis after a comparative analysis of EEG and MRS. (author)

  2. Evaluation of genotoxic and cytotoxic effects of {sup 153} Sm-EDTMP in peripheral blood lymphocytes of bone metastasis patients; Avaliacao dos efeitos genotoxico e citotoxico do {sup 153} Sm-EDTMP em linfocitos perifericos de pacientes com metastase ossea

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Miriam Fussae

    2003-07-01

    In this study the cellular damage in peripheral lymphocytes after exposure to {sup 153} Sm-EDTMP (Samarium-153 ethylene-diamine-tetramietylene-phosphonate) was determined using the technique of micronuclei analysis and differential coloration.{sup 153} Sm-EDTMP is a radiopharmaceutical used for pain relief in patients with bone metastases. The analysis of the frequency of micronuclei in patient blood samples obtained one hour after endovenous administration of radiopharmaceutical (41 MBq/kg) showed no statistical difference in relation to basal values in binucleated cells. However the analysis of damage distribution in mononucleated cells, showed that the patients without previous radiotherapy treatment presented a significant increase in the frequency of cells with one micronucleus and in those who had taken previous radiotherapy treatment, in cells with two or more micronuclei. The in vitro experiments conducted with the exposition of total blood to three radiation concentrations of {sup 153} Sm-EDTMP (0.370, 0.555 and 1.110 MBq/mL) during one hour showed an increase in the frequency of micronuclei and necrotic and apoptotic cells with increasing radiation dose. Dose-response curves for healthy donors and patients with bone metastasis without previous radiotherapy treatment were constructed. The comparison of the curves showed that patients presented higher radiosensitivity, either micronuclei or dead cell (necrotic or apoptotic) percentages, than healthy donors. (author)

  3. Mathematical models evaluation of the calculation of the spread in the rolling of ellipsoidal and diamond profiles; Avaliacao de modelos matematicos para calculo do alargamento na laminacao dos perfis oval e losango

    Energy Technology Data Exchange (ETDEWEB)

    Schaeffer, Lirio; Guedes, Luiz F.M. [Rio Grande do Sul Univ., Porto Alegre, RS (Brazil). Programa de Pos-graduacao em Engenharia Metalurgica e dos Materiais

    1987-12-31

    In this work, general considerations are initially performed about the spread and the main factors which influence it in the rolling process.It was established a prior analysis of the models in the case of oval and diamond profiles rolling. Afterwards, three mathematical models to calculate the spread are presented. It was notes that for some mathematical models, because their expressions are presented for the rectangular sections rolling, it was necessary to use auxiliary methods, which are also shown in this work. 14 refs., 5 figs., 5 tabs.

  4. In vitro assessment of the composition and microhardness of hard tissues of oral cavity submitted to gamma irradiation; Avaliacao in vitro da composicao e microdureza dos tecidos duros da cavidade bucal submetidos a irradiacao gama

    Energy Technology Data Exchange (ETDEWEB)

    Paredes, Wilber Edison Bernaola

    2017-11-01

    Clinical Radiotherapy is extremely important for the treatment of malignant lesions of the head and neck region, however, exposure to ionizing radiation can lead to systemic or local complications during and after radiation treatment. Among these immediate local complications are the oral cavity xerostomia and the consequent oral mucositis. Regarding late complications produced by radiation, tooth decay of radiation and osteoradionecrosis are included, which are considered dose-dependent lesions, with high incidence in recent decades and difficult to manage, although these appear after completion of treatment and under the influence of local factors. The methodology proposed in this study consists in evaluating the effect of gamma radiation after irradiation of the samples, using the dose used in patients suffering with head and neck cancer. The samples were obtained from human enamel and root dentin; and swine mandibular bone, which were previously polished, and then submitted to the analysis of the initial surface microhardness of all groups. Subsequently, the samples were irradiated in a dose rate of 4 Gy per day, completing a total dose of 72 Gy. Finally, the samples were submitted to surface microhardness analysis after irradiation, which presented statistically significant results from the Student t, ANOVA and Tukey statistical tests referred to the difference of the mean of the initial and final values of each study group with a significant value of p = 0.00 (<0.05). Regarding the morphological analysis in scanning electron microscopy (SEM), the deleterious effect of gamma irradiation was evidenced as structural cracks, breaks and superficial fractures of the analyzed tissues and the biochemical analysis by Attenuated Total Reflection technique using Fourier transform infrared spectroscopy (ATR - FTIR) showed degradation of inorganic components and denaturation of organic compounds; whereby, the effect of gamma irradiation on the hard tissues of the oral

  5. The refractometry use in the evaluation of type 'C' gasoline non-conformities; Uso da refratometria na avaliacao de nao conformidades da gasolina tipo 'C'

    Energy Technology Data Exchange (ETDEWEB)

    Santos, K.M.; Andrade, J.M.; Severiano, M.L.; Medeiros, M.A.O.; Fernandes, N.S.; Fernandes, V.J. [Rio Grande do Norte Univ., Natal, RN (Brazil)]. E-mail: klecia.morais@bol.com.br

    2003-07-01

    The need of the creation of practical and efficient methods that can monitor the quality of the automotive fuels it is an important factor, because they should evaluate the physical-chemical properties of the fuels to guarantee your conformity. To determine these parameters of conformity, several regulars analyses are done in the gasoline type 'C', as the distillation and content of ethyl alcohol (AEAC). However, the present work has as objective uses the refractometry in the forecast of irregularities in the gasoline trying to establish a faster and efficient analysis method. (author)

  6. Evaluation of the price volatility of short-term in Brazil and its relation with the thermal generation; Avaliacao da volatilidade do preco de curto prazo no Brasil e sua relacao com a geracao termica

    Energy Technology Data Exchange (ETDEWEB)

    Heideier, R.B.; Prado, F.A.A.; Saidel, M.A.; Ueocka, M.Z. [Universidade de Sao Paulo (EPUSP), SP (Brazil). Escola Politecnica. Dept. de Energia e Automacao Eletricas], E-mails: fernando@sinerconsult.com.br, saidel@pea.usp.br, marcos.ueocka@poli.usp.br

    2009-07-01

    This article evaluate the intensity of volatility of the electric power prices in the short term market in selected countries. It were analyzed historical series of monthly prices of major energy markets worldwide, with assessment of the energy matrix of each region. The study, by analysis of data entry program for optimizing the operation of the SIN (NEWAVE and DECOM), concludes that the price volatility in short-term in Brazil is marked by the large variation of thermal power available, especially the lack of natural gas.

  7. Experimental evaluation of the performance and emissions of diesel engines using blends of crude castor oil and diesel; Avaliacao experimental do desempenho e emissoes de motores diesel usando misturas de oleo de mamona e oleo diesel

    Energy Technology Data Exchange (ETDEWEB)

    Pimentel, Valeria Said de Barros; Pereira, Pedro Paulo [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Dept. de Engenharia Mecanica; Belchior, Carlos Rodrigues Pereira [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Dept. de Engenharia Oceanica

    2004-07-01

    This work refers to the experimental evaluation of diesel generators operating with blend of crude castor oil and diesel. Performance and emissions tests were accomplished in a diesel engine of direct injection. Because of the high viscosity of the blend a device was installed on the engine in order to lower the blend viscosity. A comprehensive analysis of the results obtained in these tests indicates the possibility of use of the blend of castor oil and diesel as fuel for diesel-generators, with modifications introduced in the engines. (author)

  8. Evaluation of the social and economical impacts related to the large scale production of bioethanol in Brazil; Avaliacao dos impactos socioeconomicos relacionados a producao em larga escala do bioetanol no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-10-15

    The social and economical impacts related to the large scale bio ethanol production have been evaluated considering the replacement of 10% of gasoline equivalent consumption in the world forecasting for the year 2025, evaluating the impacts not only in the sectors directly involved (bio ethanol and sugar cane production), but also taking into account the effects on all production chain of the economy (direct, indirect and induced effects). For this analysis, an income-product model was developed allowing to simulate production gains during the agricultural phase, and to combine different technologies for the production of bio ethanol, for quantification the impacts of the forwarding the second generation technology.

  9. Environmental assessment on PETROBRAS pipeline projects: case study of Cacimbas-Catu gas pipeline; Engenharia de avaliacao ambiental no processo de concepcao de projetos de dutos da PETROBRAS - estudo de caso do Gasoduto Cacimbas (ES) - Catu (BA)

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Wilson Jose de; Pereira, Junior, Edson R; Fonseca, Renata A. Almeida; Rocha, Marcelo de Andrade; Soares, Luis Felipe [PETROBRAS Engenharia, RJ (Brazil). Engenharia de Avaliacao Ambiental

    2005-07-01

    The environmental assessment process is one of the most important phases in the implementation of pipeline projects. For that reason, new technologies and work procedures are used to perform the environmental assessment of areas where pipeways will be implemented. Since the quality of environmental assessment studies influences the social acceptance of projects and, consequently, the time required to obtain the environmental permits, PETROBRAS (Engenharia/IETEG/ETEG/EAMB) applies advanced technological tools to acquire remote sensing data (conventional / digital aero-surveys and satellite images), as well as software for digital image processing and integration and spatial analysis of information. Information about the physical, biological and socioeconomic environments are further verified and complemented through field trips using helicopters. This process makes it possible to identify environmentally favorable corridors to develop guidelines for the implementation of the pipeline, assuring its environmental feasibility, and produces relevant data to support the Environmental Impact Assessment Study, the Environmental Impact Assessment Report and the Risk Analysis Study. As an example of the application of this methodology, this paper presents results of the assessment of the Cacimbas / Catu gas pipeline, which is currently being permitted and is planned to be implemented in areas of high environmental complexity. (author)

  10. Market evaluation and investment planning in natural gas industry in Brazil: development of the net distribution pipeline; Avaliacao de mercado e planejamento de investimentos na industria de gas natural no Brasil: perspectivas de crescimento da malha de gasodutos de distribuicao

    Energy Technology Data Exchange (ETDEWEB)

    Avila, Pedro L.; Pamplona, Edson O. [Universidade Federal de Itajuba (UNIFEI), MG (Brazil)

    2008-07-01

    This paper proposes to develop a real options model to decision-making investments in flexible technologies. As a result, finding a closed-form solution, derived from the partial differential equation of the value of flexibility provided by alternative fuels. However, you can present and analysis the results of a practical application using the method to solve real options problems known as binomial model. Initially presents a brief explanation on the method of discounted cash flow, its failures and changes to the real options analysis. In the sequence chart an overview of the natural gas industry on Brazil, emphasizing the need for consistent investments evaluations in the sector. The next section shows the proposed development of mathematical model for assessing the flexibility to choose, obtained by the exchange of fuel for transport of gas pipeline distribution of natural gas. The model takes as the case scenario where the flexible pipeline can carry both natural gas and hydrogen, and the evaluation of the option of exchanging input gives more value to the investment opportunity, and consider the optimum conditions where the option to be exercised. Keywords: Decision Making, Real Options; Natural Gas, Flexible Technology. (author)

  11. Gingival healing after gingivectomy procedure and low intensity laser irradiation. A clinical and biometrical study in anima nobile; Reparacao gengival apos a tecnica de gengivectomia e aplicacao de laser em baixa intensidade. Avaliacao clinica e biometrica em humanos

    Energy Technology Data Exchange (ETDEWEB)

    Amorim, Jose Claudio Faria

    2001-07-01

    For the present study seven patients presenting periodontal disease were selected in a way that they required the performance of gingivectomy procedure in the region of premolars in both sides, being this in the upper or lower region. After the surgical procedure one side was submitted to low intensity laser radiation, wavelength 685 nm, power 50 mW and fluency of 4J/cm{sup 2}, contact mode. The other side was used as a control, not receiving any laser irradiation. Healing process for both sides, was clinically and biometrically evaluated and compared using photographs for the periods: pre-operative, immediate post-operative, 3, 7,14,21, 28 and 35 days. The analysis was performed by 3 specialists in Periodontology considering aspects of healing. Results were submitted to statistical analysis. Biometrical evaluation showed improvement of healing for the period of 21 and 28 days in the lased group. Clinical evaluation showed better reparation mainly after the third day for the active group. Laser group was considered to present an improved healing when compared to the control group. (author)

  12. Evaluation of red mud as pozzolanic material in replacement of cement for production of mortars; Avaliacao da lama vermelha como material pozolanico em substituicao ao cimento para producao de argamassas

    Energy Technology Data Exchange (ETDEWEB)

    Manfroi, E.P.; Cheriaf, M.; Rocha, J.C., E-mail: elizmanfroi@yahoo.com.b, E-mail: malik@valores.ufsc.b [Universidade Federal de Santa Catarina (UFSC), Florianopolis, SC (Brazil). Dept. de Engenharia Civil

    2010-07-01

    Red mud is a by-product of the alkaline extraction of aluminum from the bauxite and represents a renewed environmental problem due the significant annual throughput by the plants. In the present work, the pozzolanic properties of Brazilian red mud fired at 600, 700, 800 and 900 deg C were investigated by monitoring lime consumption using DTA analysis and Brazilian standard methodology NBR 5772 (1992). Products and kinetics of hydration were determined in cement pastes produced with 5 and 15% red mud using x-ray diffraction and DTA analysis. Compressive strength and capillary absorption tests were realized on mortars constituted by 5, 10 and 15% red mud in replacement of cement. When calcined at 600 deg C, the red mud develops good pozzolanic properties, and the compressive strength of mortars produced with this waste meet values in accordance with regulatory standard. These results shown than red mud can be used, in partial replacement of cement, as new construction material to produce sustainable mortars with low environmental impact. (author)

  13. Evaluation of the actual model of transformers with Variable Tap in voltage stability studies; Avaliacao do modelo atual de transformadores com tap variavel em estudos de estabilidade de tensao

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, C.A. [Centrais Eletricas Brasileiras S.A. (ELETROBRAS), Rio de Janeiro, RJ (Brazil)], E-mail: carlosaparecido@eletrobras.com; Prada, R.B. [Pontificia Universidade Catolica (PUC-Rio), Rio de Janeiro, RJ (Brazil)], E-mail: prada@ele.puc-rio.br; Costa, V.M. da [Universidade Federal de Juiz de Fora (UFJF), MG (Brazil). Programa de Pos-Graduacao em Engenharia Eletrica], E-mail: vander@lacee.ufjf.br

    2009-07-01

    This paper addresses the impacts of the world-wide used model of load tap changer transformers - LTCs in voltage stability analysis. Two fundamental questions will be examined: the voltage stability margin and the effect of voltage control actions in the abnormal operation region. It may be easily observed that, in a 2-bus system, the point of collapse and the equivalent impedance which represents the load, will or will not vary, according to the direction of the flow, when the tap is changed. Intuitively, however, it was imagined that this dependence with the flow direction would not occur in a real transformer. It was confirmed through laboratory tests, so it can be concluded that the LCT model, used all over the world, is not adequate to be used in voltage stability analysis. By using the usual model, it is also shown that there are signs that incorrect information regarding voltage control actions can be provided to the operators if the system is operating in the abnormal region. (author)

  14. Reliability assessment of permanent downhole monitoring systems (PDG/TPT) in Marlim Field; Avaliacao da confiabilidade de sistemas de monitoramento permanente de fundo de pocos (PDG/TPT) no Campo de Marlim

    Energy Technology Data Exchange (ETDEWEB)

    Frota, Helder Mamede; Destro, Wagner [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2004-07-01

    This work is related to the reliability engineering, specifically, to the analysis of data lifetime and to the failure modeling of Permanent Downhole Gauge monitoring systems (PDG/TPT) in Marlim field, Campos Basin. These systems are composed of pressure and temperature sensors installed in oil wells and connected, by umbilicals, to their production platforms. The raising of the main failure causes in these systems, in 12-year operation, served as the basis to describe their driving parameters, foreseeing their behavior for the following years, considering the reliability theory of systems. It was obtained the pattern of the operations and extracted the wanted information: types and failure modeling, systems survival time and the Mean Time Between Failures (MTBF). This methodology permits the comparison among the components performance from several manufacturers. The results can be used in economical analysis, in oil field management, in maintenance prediction and in reliability studies. The area of failure modeling in association with these systems lifetime is the focus of this study. (author)

  15. Offshore degasser vessel capacity versus performance qualitative evaluation for waste water treatment; Avaliacao qualitativa da capacidade versus desempenho de vaso degaseificador em plataformas offshore visando tratamento de agua produzida para descarte

    Energy Technology Data Exchange (ETDEWEB)

    Melo, Marcel V.; Pereira Junior, Oswaldo de A. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil); Silva, Daniel B.V.F. [Engineering Simulation and Scientific Software (ESSS), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Present work shows a qualitative evaluation of an offshore degasser vessel aiming the improvement of the water processing plant capacity. For such computational fluid dynamics (CFD) allowed the analysis of the flow pattern inside the vessel for different operational flow rates and internal geometries. This vessel is responsible for the process of water final polishing to be disposed into the sea. Original capacity of the vessel is 13.308 m{sup 3}/d, but after some changes in the outlet section, the processing capacity increased to 24.000 m{sup 3}/d, without changing its separation efficiency. However, as newer production predictions state that the new processing capacity should be increased to 26.000 m{sup 3}/d, there is some uncertainty on how would be this vessel behaviour, given the new operational condition. CFD analysis will be used to evaluate the flow characteristics inside the vessel (residence time distribution), therefore providing information on the separation performance for each one of the specified conditions and internal modifications. (author)

  16. Irradiation effects of GaAlAs ({lambda}=830 nm) laser on oral traumatic ulceration; Avaliacao dos efeitos da irradiacao de ulceras traumaticas na cavidade bucal com o laser de GaAlAs ({lambda}=830 nm)

    Energy Technology Data Exchange (ETDEWEB)

    Senna, Andre Machado de

    2003-07-01

    Low intensity GaAlAs ({lambda}=830 nm) laser irradiation effects on oral traumatic ulceration were evaluated. For this purpose, twenty patients presenting orthodontic appliance - induced oral traumatic ulceration were randomly distributed in two groups. Patients in group 1 were submitted to the irradiation procedure and group 2 was the control one. The irradiation parameters employed were the following: wavelength 830 nm, one single application of 4 J/cm{sup 2}, punctual in the contact mode and 30 mW power. The control group received the conventional treatment, consisting on topical application of Triancinolon based ointment four times a day. For both groups the agent responsible for the trauma was removed or covered with utility wax whenever removal was impossible. The results were evaluated concerning the wounds size reduction and pain relief. The time of laser irradiation was considered the starting time (time zero) and analysis were done 24 hours, 48 hours and seven days after that. The statistical analysis showed an acceleration in the healing process as well accentuated pain reduction for the irradiated group compared to the control one. These evidences allows us to indicate this protocol of one single application of 4 J/cm{sup 2} as therapy when patients with oral traumatic ulceration can not attend several sessions for a multiple application procedure. (author)

  17. Rhodium (II) cycle alkanecarboxylate: synthesis, spectroscopic and thermo analytic studies and evaluation of the antitumor potential; Cicloalcanocarboxilatos de rodio(II). Sintese, estudos espectroscopicos, termoanaliticos e avaliacao do potencial antitumor

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Aparecido Ribeiro de

    1995-07-01

    Four new rhodium(II) carboxylates (cyclopropane, cyclobutane, cyclopentane, and cyclohexanecarboxylate), and other already known rhodium (II) carboxylates (acetate, propionate, butyrate, metoxyacetate, dichloroacetate, and trifluoroacetate), have been prepared for study in this work. The compounds were characterized by elementary and thermogravimetric analysis, magnetic susceptibility, and electronic, Raman, and infrared spectroscopy. The reaction of Rh CL{sub 3}.aq with the sodium carboxylates was studied aiming to improve the understanding of the redox process involved. Spectroscopy studies (Raman and electronic) were made to examine the transition involved in the Rh-Rh and Rh-O bonds. The results have shown a direct relation between the force of the carboxylic acid and the Rh-O force, but show a inverse relation with the Rh-Rh bond force. Thermal analysis studies were undertaken and the obtained date show a resemblance of the TG/DTG curves with that found in literature. In the other hand, the DSC curves show a different results: in open crucible, the peaks associated with the cage breakdown are exothermic and, in closed crucible this peaks are endothermic. The thermodecomposition products were analyzed. The evolved gases were identified by GC?MS and {sup 1}H and {sup 13} C NMR spectra. The residues were analyzed by X-ray diffraction. Antitumor activity of rhodium cyclopropanecarboxylate was evaluated in vitro (cell cultures K562 and Ehrlich) and in vivo (Balb-c mice with ascite Ehrlich tumor), indicating an increased life span (87.5%) of the treated animals. (author)

  18. Assessment of metal concentrations in sediment samples from Billings Reservoir, Rio Grande tributary, Sao Paulo, Brazil; Avaliacao da concentracao de metais em amostras de sedimento do Reservatorio Billings, Braco Rio Grande, Sao Paulo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Bostelmann, Eleine

    2006-07-01

    The present study chemically characterized sediment samples from the Billings reservoir, Rio Grande tributary, in the Metropolitan region of Sao Paulo, by determining metal concentration and other elements of interest. The chosen chemical parameters for this characterization were Aluminum, Arsenic, Barium, Cadmium, Copper, Chromium, Iron, Lead, Manganese, Mercury, Nickel, Selenium and Zinco. These parameters are also used in the water quality index, with the exception of Selenium. The concentrations were determined through different analytical techniques such as atomic absorption spectrometry (FAAS, GFAAS and CVAAS), optical emission spectrometry (ICP OES) and neutron activation analysis. These analytical methodologies were assessed for precision, accuracy and detection and/or quantification limits for the sediment elements in question. Advantages and disadvantages of each technique for each element and its concentration were also discussed. From these assessments the most adequate technique was selected for the routine analysis of sediment samples for each element concentration determination. This assessment verified also that digestion in a closed microwave system with nitric acid is efficient for the evaluation of extracted metals of environmental interest. The analytical techniques chosen were equally efficient for metals determination. In the case of Cd and Pb, the FAAS technique was selected due to better results than ICP OES, as it does not present matrix interference. The concentration values obtained for metals As, Cd, Cu, Cr, Hg, Ni, Pb and Zn in the sediment samples were compared to Canadian Council of Minister of the Environment (CCME) TEL and PEL values. (author)

  19. Evaluation of physical and mechanical and gaseous emissions in reuse waste in the development of a ceramic products; Avaliacao das propriedades fisica e mecanica e de emissoes gasosas no reaproveitamento de residuos no desenvolvimento de um produto ceramico

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, R.A.; Martins, B.E.D.B.S.; Couto, V.M.P.; Campos, J.C.; Guimaraes, C.S.; Almeida, V.C., E-mail: valeria@eq.ufrj.br [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Centro de Tecnologia. Escola de Quimica

    2011-07-01

    The search for alternative environmentally less aggressive disposal of solid waste has been the path taken to reverse the negative scenario established by the improper disposal of these materials. The aim of this study was to evaluate the recycling of the waste: sludge from water treatment and WTP, glass beads, obtained from the blasting chamber, aiming to develop a ceramic material. Compositions were prepared with different percentages of waste. The ceramic bodies were sintered at 900 deg C, 1000 deg C and 1100 deg C being tested for water absorption and bending failure stress, and characterized by X-ray diffraction We performed the analysis of greenhouse gases released during the burning process. Preliminary results indicate that the ceramic material produced did not show a gain of resistance expected by the introduction of micro glass beads, and that we must observe the legal limits for air emissions coming from burning.(author)

  20. Evaluation of skin entry kerma in radiological examinations at the Hospital de Clinicas, Parana, Brazil; Avaliacao de kerma de entrada na pele em exames radiologicos no Hospital de Clinicas do Parana, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Porto, Lorena E.; Schelin, Hugo R.; Santos, Amanda C. dos; Bunick, Ana Paula; Paschuk, Sergei; Denyak, Valeriy [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil); Tilly Junior, Joao G. [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil). Hospital de Clinicas; Khoury, Helen J., E-mail: khoury@ufpe.b [Universidade Federal de Pernambuco (UFPE/DEN), Recife, PE (Brazil). Dept. de Energia Nuclear

    2011-10-26

    This paper evaluates the skin entry dose of pediatric and adults patients when submitted to radiological examinations at the Hospital de Clinicas do Parana, Brazil, as part integrate of the data assessment of International Atomic Energy Agency (IAEA) for Latin America. It was performed measurements of dose for evaluation of skin entry kerma in pediatric patients in thorax AP/PA examinations, adults of thorax in AP/PA, cranio caudal mammography and median lateral and patients of computerized tomography in examination of head, thorax and abdomen. The obtained data demonstrate the necessity of verification of diagnostic analysis standards. The great value amplitudes demonstrate the incompatibility of examination executions with those recommended by the literature. The dose values presented partially inside the range recommended and the other over the expected for the due examination when compared with the literature

  1. Effects of JPEG data compression on magnetic resonance imaging evaluation of small vessels ischemic lesions of the brain; Efeitos da compressao de dados JPEG na avaliacao de lesoes vasculares cerebrais isquemicas de pequenos vasos em ressonancia magnetica

    Energy Technology Data Exchange (ETDEWEB)

    Kuriki, Paulo Eduardo de Aguiar; Abdala, Nitamar; Nogueira, Roberto Gomes; Carrete Junior, Henrique; Szejnfeld, Jacob [Universidade Federal de Sao Paulo (UNIFESP/EPM), SP (Brazil). Dept. de Diagnostico por Imagem]. E-mail: paulokuriki@gmail.com

    2006-01-15

    Objective: to establish the maximum achievable JPEG compression ratio without affecting quantitative and qualitative magnetic resonance imaging analysis of ischemic lesion in small vessels of the brain. Material and method: fifteen DICOM images were converted to JPEG with a compression ratio of 1:10 to 1:60 and were assessed together with the original images by three neuro radiologists. The number, morphology and signal intensity of the lesions were analyzed. Results: lesions were properly identified up to a 1:30 ratio. More lesions were identified with a 1:10 ratio then in the original images. Morphology and edges were properly evaluated up toa 1:40 ratio. Compression did not affect signal. Conclusion: small lesions were identified ( < 2 mm ) and in all compression ratios the JPEG algorithm generated image noise that misled observers to identify more lesions in JPEG images then in DICOM images, thus generating false-positive results.(author)

  2. Assessment of the adsorptive capacity of the Kaolin deposit targeting its use on the removal of colors in aqueous solution; Avaliacao da capacidade adsortiva do rejeito de caulim visando seu uso na remocao de corantes em solucao aquosa

    Energy Technology Data Exchange (ETDEWEB)

    Matos, S.C.; Hildebrando, E.A., E-mail: matos.cintia68@gmail.com [Universidade Federal do Para (FEMat/UFPA), PA (Brazil). Faculdade de Engenharia de Materiais

    2016-07-01

    The Amazonic region has large and valuable kaolin deposits. The state of Para by itself comprises three large industries which process kaolin. It has been noticed that the waste resulting from the processing of kaolin is rich in silico-aluminate, presenting potential in adsorption processes. Thus, this research's objective is to assess the kaolin waste produced during the processing phase, aiming at its application as low cost adsorbent material. For that, the kaolin waste has been characterized by X-ray diffraction and chemical analysis (XRF), and then sieved and calcined at 700 ° C, being then subjected to the adsorption process and observed qualitatively its capacity of retention by methylene blue (AM). Preliminary results show that the kaolin waste has satisfactory adsorption capacity at concentrations of up to 50.0 mg / MP, demonstrating the potential that it be used in the removal of dyes in wastewater treatment. (author)

  3. Hyperbranched polyester: single route synthesis, characterization and evaluation as impact modifier of an epoxy resin; Poliester hiperramificado: sintese por uma rota simples, caracterizacao e avaliacao como modificador de impacto de uma resina epoxi

    Energy Technology Data Exchange (ETDEWEB)

    Miranda, B.H.S.; Sousa, A.R., E-mail: rangel@deii.cefetmg.br [Centro Federal de Educacao Tecnologica de Minas Gerais (DEMAT/CEFET-MG), Belo Horizonte (Brazil). Departamento de Engenharia de Materiais; Alves, A.P.P.; Silva, G.G. [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte (Brazil). Departamento de Quimica. Lab. de Materiais Polimericos Multicomponentes

    2015-07-01

    Two hyperbranched polyesters were obtained using glycerol and adipic acid as monomers, they were characterized through nuclear magnetic resonance ({sup 13}C NMR) to branching degree determination, size exclusion chromatography to molar mass obtention and thermogravimetric analysis (TGA) to evaluate the thermal stability. The polyesters synthesized were added to epoxy resin, at 10% by weight, to evaluate the implication on mechanical properties, impact and stress strain, and thermal (glassy transition temperature - Tg). We observed that rising the synthesis time from 6 to 15,5 hours the degree of branching, molar mass and thermal stability of the polyester increased. The addition of hyperbranched polyesters did not change the mechanical properties of epoxy resin significantly, but the Tg was reduced. (author)

  4. Assessment of potential Rio Grande do Norte, Brazil, clays when subjected to high rates of heating; Avaliacao da potencialidade de argilas do Rio Grande do Norte quando submetidas a elevadas taxas de aquecimento

    Energy Technology Data Exchange (ETDEWEB)

    Filgueira, R L; Pereira, L M; Dutra, R P.S.; Nascimento, R M [Universidade Federal do Rio Grande do Norte (DEMat/CT/UFRN), Natal, RN (Brazil). Centro de Tecnologia. Dept. de Engenharia de Materiais

    2009-07-01

    In this work we study three clays of the state of Rio Grande do Norte, Brazil, to evaluate the potential them when subjected to high rates of heating. The samples were formed by pressing and subject to rates of 5 deg C / min, 10 deg C / min and 15 deg C / min, with temperature of 950 deg C. This study determined the technological properties of the samples. The mineralogical composition was identified by X-ray diffraction. The chemical composition was determined by Xray fluorescence. The Atterberg limits, were used to classify the samples on the plasticity. Were also performed: dilatometry, size analysis and scanning electron microscopy. The examination of the processing variables and the intrinsic characteristics of each material indicates that the RX clay showed the best results for the manufacture of blocks and tiles. The techniques used in this study were efficient and the initial objectives were achieved. (author)

  5. Evaluation of polymeric materials packed in fixed bed column for oil water remediation; Avaliacao de materiais polimericos empacotados em colunas de leito fixo para a remediacao de aguas oleosas

    Energy Technology Data Exchange (ETDEWEB)

    Queiros, Yure G.C.; Barros, Cintia Chagas; Oliveira, Roberta S.; Marques, Luiz R.S.; Cunha, Luciana; Lucas, Elizabete F. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Macromoleculas Eloisa Mano], e-mail: yuregomes@ima.ufrj.br, e-mail: elucas@ima.ufrj.br

    2007-07-01

    Polymeric resins are being tried as an alternative material for treating oily waters from the petroleum industry, which have already been treated by conventional methods. The objective of this work has been to evaluate the purification degree of synthetic oily waters when treated in fixed bed columns packed with polymeric resins made up of hydrophilic and lipophilic moieties. The analysis used for characterizing the total grease and oil content (TOG) was fluorimetry. Starting oily waters of average TOG 50 ppm were prepared. Data obtained from eluted waters did not outweigh 10% of the TOG values of starting solutions in some blends of resins with a pretty good mechanical stability under the increase of pressure. Organoclay material showed a good retention performance, but has presented a mechanical instability too, compromising its use for larger amounts of wastewater. (author)

  6. Evaluation of the use of waste of soybeans (Glycine max (L.)) combined with wood waste in making briquet; Avaliacao da utilizacao de residuo de soja (Glycine max (L.)) combinado com residuo de madeira de confeccao de briquetes

    Energy Technology Data Exchange (ETDEWEB)

    Travessini, Rosana; Schutz, Fabiana Costa de Araujo; Anami, Marcelo Hidemassa; Scherpinski, Neusa Idick [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil)], Emails: rosana_travessini@yahoo.com.br, fabianaschutz@gmail.com, mhanami@gmail.com, neusascherpinski@gmail.com

    2010-07-01

    The agricultural industry produces a large amount of which use biomass is an alternative energy economically viable through the compression portion of ligno-cellulose as raw material to replace the wood with an equivalent product, by briquetting. This study aimed to evaluate the technical feasibility of manufacturing fuel briquettes made from soybean residues combined with waste wood. The making of briquettes was performed in the laboratory of Electromechanics of UTFPR campus Medianeira PR. For this analysis, we assessed the content of moisture, ash, fixed carbon content of porosity and higher calorific value. From the results we can conclude that the manufacture of briquettes from lignocellulosic raw materials is an extremely viable energy flashlight for the region of the Bacia do Rio Parana III. (author)

  7. Pipeline maintenance, evaluation and inspection in water crossing: OSBRA case in Paranaiba River; Inspecao, avaliacao e manutencao de oleoduto em travessia: caso OSBRA (Oleoduto Sao Paulo-Brasilia) no Rio Paranaiba

    Energy Technology Data Exchange (ETDEWEB)

    Castro, Newton Camelo de; Spagnolo, Rodrigo Alves; Vieira Paulo de Tarso [TRANSPETRO - PETROBRAS Transportes, Rio de Janeiro, RJ (Brazil)

    2005-07-01

    Attempting to pipeline integrity proceeding of PETROBRAS, the OSBRA (Sao Paulo-Brasilia Pipeline) Management promoted field inspections by divers at Paranaiba River water crossing, located at your right-of-way pipeline. These services were composed by topography, visual inspections and local screened of the pipeline, determining the equipment layout at that water crossing. At Paranaiba River, the pipeline is seated above the river bed. The results indicated high spans in the pipeline structure. Considering this configuration, were made water speed and vibration measurements near the equipment. The activities were executed in order to assist the structural analysis of the pipeline. These studies had concluded to a temporary solution, which consisted in reducing loads and building additional supports. (author)

  8. Potential assessment of Sergipe and Alagoas clays in aggregates production for use in concrete; Avaliacao do potencial de argilas de Sergipe e Alagoas na producao de agregados para uso em concreto

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, H.A.; Santos, C.P.; Oliveira, R.M.P.B.; Jesus, E. de; Macedo, Z.S., E-mail: herbetalves148@gmail.com, E-mail: cochiran@hotmail.com, E-mail: rosaneboliveira@gmail.com, E-mail: edilsonjs@ufs.br, E-mail: zelia.macedo@gmail.com [Universidade Federal de Sergipe (UFS), Sao Cristovao, SE (Brazil)

    2017-07-15

    This study aims to characterize technologically three clays employed by ceramic industries in Sergipe state, Brazil. Its potential use for the production of calcined synthetic aggregate to substitute gravel in concrete production was evaluated. The characterization of the clays included particle size and plasticity analysis, X-ray diffraction, differential and thermogravimetric analyses, dilatometry, X-ray fluorescence, organic matter content, cation exchange capacity, specific area, and scanning electron microscopy. Ceramic bodies were uniaxially pressed under 30 MPa, into rectangular and cylindrical shapes. Ceramic bodies of individual clays and also ceramic formulations were fired and subsequently characterized to determine their water absorption, apparent density, compressive strength, and grain morphology. It was observed that, after firing at 1120 deg C, two formulations presented strength, water absorption and specific mass comparable to those of gravel used in concrete. (author)

  9. Evaluation of the modified nanoclay effect on the vulcanization of SBR through rheometric curve and DSC;Avaliacao do efeito de nanoargila modificada na vulcanizacao de SBR atraves da curva reometrica e DSC

    Energy Technology Data Exchange (ETDEWEB)

    Forte, Maria Madalena C.; Brito, Karin J.S., E-mail: mmcforte@ufrgs.b [Universidade Federal do Rio Grande do Sul (PPGEM/UFRGS), Porto Alegre, RS (Brazil). Programa de Pos-Graduacao em Engenharia Mecanica; Gheller Junior, Jordao [SENAI, Sao Leopoldo, RS (Brazil). Centro Tecnologico de Polimeros

    2009-07-01

    Rubber nanocomposites with nanoclays organically modified by quaternary ammonium salts may have the curing features modified significantly, since the salts may act on the rubber cure system. The aim of this work is to evaluate the influences of an organically modified montmorillonite (OMMT) on the curing reaction of an SBR (styrene butadiene rubber) with sulfur. The SBR/OMMT nanocomposites were prepared by co-coagulating SBR latex and Cloisite{sup R} 20A aqueous suspension at different nanoclay concentrations. The OMMT effect on the sulfur curing reaction was evaluated by the rheometric curve using a rheometer type RPA (Rubber Process Analyzer) and the heat of vulcanization (DELTAH{sub v}) using Differential Scanning Calorimetry (DSC). The evaluation of the clay nanolayers dispersion in the SBR matrix was accomplished by x-ray diffraction (XRD) analysis. (author)

  10. Strategic environmental assessment applied to the oil and gas planning in Brazil: a proposal; O uso da avaliacao ambiental estrategica no planejamento da oferta de blocos para exploracao e producao de petroleo e gas natural no Brasil: uma proposta

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, Izabella Monica Vieira

    2008-01-15

    This thesis discusses the opportunity to apply strategic environmental assessment (SEA) to the oil and gas planning procedures in Brazil, considering the call for bids' process that has been adopted by the Federal Government since 1999. The thesis presents a literature review on the concepts and principles of environmental assessment, environmental impact assessment and strategic environmental assessment, considering its origins and practice. It also provides an appraisal of the international practice on SEA application to the oil and gas sector planning, as well as and a comparative analysis of the planning system as practiced in Brazil. Based on the international and the national SEA experience, and considering the requirements to address the environmental feasibility of oil and gas offshore activities, a proposal is presented on the framework for the use of the SEA as part of the oil and gas planning process in Brazil, together with the procedural requirements to be met. (author)

  11. Evaluation of technological properties of alumina refractory systems-zirconia and zirconia-silica-alumina; Avaliacao das propriedades tecnologicas de refratarios dos sistemas alumina-zirconia e alumina-zirconia-silica

    Energy Technology Data Exchange (ETDEWEB)

    Marinho, A.R.O.; Carvalho, T.U.S.; Fagury Neto, E.; Rabelo, A.A., E-mail: adriano@unifesspa.edu.br [Universidade Federal do Sul e Sudeste do Para (UFSSPA), Maraba, PA (Brazil)

    2014-07-01

    Alumina-zirconia refractories are noted for being products of excellent cost-effective, however, zirconia may limit its use due to decreasing resistance to thermal shock. This study aims to evaluate these refractories with the addition of microsilica, which can greatly improve their properties. Were used the following starting materials: calcined alumina, zirconia (stabilized and monoclinic) in amounts of 2%, 4% and 6% by weight, plus microsilica (5%w.). The powders were milled together with binder and lubricant for conformation bodies by uniaxial pressing. The samples were dried, calcined and sintered at 1400 °C/2h were characterized using the methods of Archimedes, and scanning electron microscopy (SEM), chemical analysis using energy dispersive X-ray (EDS), and mechanical flexural strength tests at room temperature. Formulations with the presence of microsilica showed satisfactory results and optimized properties. (author)

  12. Evaluation of performance of AISI 444 steel for application in distillation towers; Avaliacao do desempenho do aco AISI 444 para aplicacao como 'lining' em torres de destilacao

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, R.F.; Miranda, H.C. de; Farias, J.P. [Universidade Federal do Ceara (DEMM/UFC), Fortaleza, CE (Brazil). Dept. de Engenharia Metalurgica e de Materiais. Lab. de Caracterizacao de Materiais], e-mail: rf.guimaraes@yahoo.com.br

    2008-07-01

    In this work, the behavior of the AISI 444 ferritic stainless steel submitted to thermal fatigue test and their corrosion resistance in heavy crude oil was evaluated. The AWS E309MoL-16 and E316L-17 weld metal was employed as filler metal. Plates of the AISI 444 were welded on ASTM A-516 Gr. 60 plates and submitted to fatigue thermal cycle. Samples were extracted from plates welded and heat treated immersed in heavy crude oil at 300 deg C. Optical microscopy (OM), scanning electron microscopy (SEM) and energy dispersive of X-ray analysis (EDX) were used to characterize the microstructure and the corroded surface. The results show that the AISI 444 stainless steels did not present cracks after the thermal fatigue cycle and the heat treated immerse in heavy crude oil. The electrode AWS E309MoL-16 show better corrosion resistance than the AWS E316L-17. (author)

  13. Strategic environmental assessment applied to the oil and gas planning in Brazil: a proposal; O uso da avaliacao ambiental estrategica no planejamento da oferta de blocos para exploracao e producao de petroleo e gas natural no Brasil: uma proposta

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, Izabella Monica Vieira

    2008-01-15

    This thesis discusses the opportunity to apply strategic environmental assessment (SEA) to the oil and gas planning procedures in Brazil, considering the call for bids' process that has been adopted by the Federal Government since 1999. The thesis presents a literature review on the concepts and principles of environmental assessment, environmental impact assessment and strategic environmental assessment, considering its origins and practice. It also provides an appraisal of the international practice on SEA application to the oil and gas sector planning, as well as and a comparative analysis of the planning system as practiced in Brazil. Based on the international and the national SEA experience, and considering the requirements to address the environmental feasibility of oil and gas offshore activities, a proposal is presented on the framework for the use of the SEA as part of the oil and gas planning process in Brazil, together with the procedural requirements to be met. (author)

  14. Metals on urban soils: evaluation of the concentration on soils adjacent to the Pinheiros river border avenues; Metais em solos urbanos: avaliacao da concentracao em solos adjacentes a marginal do rio Pinheiros, SP

    Energy Technology Data Exchange (ETDEWEB)

    Nammoura Neto, Georges M.; Figueiredo, Ana M.G.; Ribeiro, Andreza P.; Silva, Natalia C.; Ticianelli, Regina B.; Camargo, Sonia P., E-mail: anamaria@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil). Lab. de Analise por Ativacao Neutronica

    2009-07-01

    The samples for this study were collected in seven points with approximately 3 km of distance, with a depth of 5 cm and prepared in laboratory. Also, with the samples three BEN (IWG-GIT), GS-N (IWG-GIT) and Soil-7 (IAEA) reference standards were analysed,for quality control of the results. Using neutron activation analysis it was possible to determine the concentrations of these heavy metal, particularly the zinc and the barium, and in these study, these two metals have their concentrations rose surpassing the intervention limits, according to the stipulated by the Companhia de Tecnologia de Saneamento Ambiental (CETESB), which can be connected to vehicle emissions and the use of pesticides and herbicides as long as his extension, being considered a risk for the human heath through the resuspension the dust of these contaminated soil

  15. Cost effective method for valuation of impacts caused by greenhouse gases emissions for oil and gas companies; Metodo de custo-efetividade para avaliacao de impactos causados pelas emissoes de gases de efeito estufa em empresas de oleo e gas

    Energy Technology Data Exchange (ETDEWEB)

    Carneiro, Elisa Vieira [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil); Barros, Sergio Ricardo da Silveira [Universidade Federal Fluminense (LATEC/UFF), Niteroi, RJ (Brazil). Mestrado em Sistemas de Gestao

    2012-07-01

    The objective of this work is to apply the method of cost-effectiveness in economic evaluation of new investment projects, based on information about reducing greenhouse gases emissions. In the context of the commitment of companies with the Climate Change and Sustainability, this work is important and contributes to the oil and gas industry, because it integrates information on reducing emissions of greenhouse gases in negative Net Present Value (NPV) projects, helping the portfolio manager on decision making between alternative projects. In this article, examples are given of two investment projects, in which the cost effectiveness methodology is applied, considering the reduction of emission of greenhouse gases such as additional environmental benefit, or cost avoidance, in an adjusted model of the economic viability analysis of meritorious projects. (author)

  16. Niobium (V) doped bioceramics: evaluation of the hydrothermal route modified with citric acid and urea to obtain modified hydroxyapatite; Bioceramicas aditivadas com niobio (V): avaliacao da rota hidrotermica modificada com acido citrico e ureia para obtencao de hidroxiapatitas modificadas

    Energy Technology Data Exchange (ETDEWEB)

    Simomukay, E.; Souza, E.C.F. de; Antunes, S.R.M.; Borges, C.P.F.; Michel, M.D.; Antunes, A.C. [Universidade Estadual de Ponta Grossa (UEPG), Ponta Grossa, PR (Brazil)

    2016-01-15

    Synthetic hydroxyapatite (Ca{sub 10}(PO{sub 4}){sub 6}(OH){sub 2}; HA) has become a widely used ceramic material for bone reconstruction due to its biocompatibility with the bone tissue. This biocompatibility as well as other physical and chemical properties of the hydroxyapatite can be modified by the addition of different ions to its structure. Niobium (V) ion has not been commonly used in the hydroxyapatite synthesis. The objective of this study was to evaluate the use of hydrothermal route in the niobium (V) doped hydroxyapatite synthesis. The route used the niobium ammonium oxalate (NH{sub 4}H{sub 2}[NbO(C{sub 2}O{sub 4}){sub 3}].3H{sub 2}O) complex as a niobium (V) ion precursor. The addition of citric acid and urea in the hydrothermal route is used for the control of synthesis pH and precipitation rate. Pure sample and sample added with 5.3 ppm of niobium (V) ion were prepared. The coexistence of other phases besides the hydroxyapatite was not observed in any of the samples through the use of X-ray diffraction and infrared spectroscopy (FTIR) techniques. The FTIR technique revealed the presence of hydroxyapatite characteristic functional groups. The scanning electron microscopy analysis showed the formation of agglomerates composed of round particles, confirmed by the transmission electron microscopy technique. The X-ray fluorescence spectroscopic analysis detected the presence of niobium in the doped sample. The results showed that niobium (V) doped hydroxyapatite can be synthesized by means of hydrothermal route, which may be considered as huge potential for future application in bioceramics. (author)

  17. Evaluation of the effects of gamma radiation on physicochemical characteristics of kiwi (Actinidia deliciosa) cv. Hayward minimally processed; Avaliacao dos efeitos da radiacao gama nas caracteristicas fisico-quimicas de kiwi (Actinidia deliciosa) cv. Hayward minimamente processado

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Ana Claudia Sampaio

    2011-07-01

    The search for a healthy life has led consumers to rethink their eating habits, consuming fruits and vegetables in place of manufactured products, therefore, the demand for minimally processed products has evolved rapidly. The kiwi fruit (Actinidia deliciosa) has high nutritional value, being rich in C vitamin especially, which has wide acceptance in consumer markets. Thus, along with papaya, passion fruit and pineapple, kiwi can be considered as an additional feature of C vitamin in the diet, or as a substitute for traditional citrus. The aim of this study was to assess the effects of gamma radiation on physical and chemical characteristics of kiwis minimally processed and stored under refrigeration, since this technology increases the shelf life of fruits and vegetables. The Kiwis was stripped, processed and cut into slices, stored in polyethylene bags of 10 cm squared and irradiated at doses of 0 (control), 1 and 2 kGy. A source of {sup 60}Co Gammacell 220, dose rate of 0.429 kGy/hour, in which each treatment had 5 replicates with 15 slices of kiwifruit per replicate. After irradiation the samples were stored in a climatic chamber at 6 degree C (near the temperature of commercial refrigerators). The following criteria were physical chemical analysis: pH, color, chlorophyll content, loss of weight, moisture, acidity and Brix. The analysis were done on 1{sup st}, 7{sup th} and 14{sup th} days after irradiation. The results indicated that gamma radiation did not induce deleterious changes in the physicochemical properties of the kiwi may be used for preservation of minimally processed kiwifruit. (author)

  18. Strategic environmental evaluation of natural gas - SEA/NG: a management tool for development of a environmental conservation policy; Avaliacao ambiental estrategica para o gas natural - AAE/GN: instrumento de gestao do desenvolvimento para uma politica de conservacao ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Comar, Vito; Turdera, Mirko Valenzuela; Silva, Paulo Souza; Benedetti Filho, Edemar; Santiago, Etenaldo Felipe; Costa, Fabio Edir dos Santos [Universidade Estadual do Mato Grosso do Sul (UEMS), Campo Grande, MS (Brazil). Centro de Analise e Monitoramento Ambiental do Gas Natural (GASLAB); Moretti, Edvaldo; Oliveira, Jorge Eremites de; Sciamarelli, Alan; Freitas Filho, Jose Daniel de; Vieira, Maria Helena Pereira [Universidade Estadual do Mato Grosso do Sul (UEMS), Campo Grande, MS (Brazil); Soares, Afranio Jose Soriano [UNESP, Rio Claro, SP (Brazil); Oliveira, Henrique de; Comunello, Eder [EMBRAPA, Dourados, MS (Brazil). Centro de Pesquisas Agropecuaria do Oeste (CPAO); Freire, Luiz G.M. [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The methodology for a Strategic Environmental Evaluation of Natural Gas - SEA/NG incorporates within the analysis of the project the socio-cultural, economic, energetic and environmental implications of the transformations, due to the adoption of natural gas, in the area of influence of gas pipelines and gas-powered thermo-electric plants. It was based on the case study of a gas pipeline planned to reach the city of Dourados from Campo Grande, capital of the Brazilian State of Mato Grosso do Sul, which implied the construction of a thermoelectric plant in Dourados. The SEA/NG: 1. Defines the best alternative track for gas pipelines; 2. Proposes location alternatives for gas-powered thermo-electric plants; 3. Evaluates the cumulative and synergic effects of human activities in the socio-environmental aspects; 4. Studies the dynamics of regional development; 4. Supports urban planning decisions in cities housing gas-powered thermo-electric plants; 5. Proposes a System of Analysis and Environmental Monitoring for Natural Gas. Qualitative-quantitative matrixes were used to evaluate the cumulative and synergic effects of the adoption of natural gas within the regional energy matrix, determine the best alternative track for the gas pipeline proposed from Campo Grande to Dourados, and to identify the best location for a gas-powered thermo-electric plant. The matrixes integrated the areas of geology, hydrology, ecology and socio-economics issues both in the phases of construction and operation of the pipeline. Diagrams and interactive conceptual models were also used to synthesize the principal components involved in the choice of the best gas pipeline alternative track. This project received financial grants from PETROBRAS, MSGAS, TBG and FINEP. (author)

  19. Effects of gamma radiation of Cobalt-60 on arabica and conillon seeds coffea: physic-chemistry evaluation; Efeitos da radiacao gama do Cobalto-60 em sementes de cafe arabica e conillon: avaliacao fisico-quimica

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Marcus Henriques da

    2012-07-01

    Brazil is the largest producer and exporter of coffee in the world. The coffee bean is one of the main products of the Brazilian trade balance. Two species of coffee are the most economically important: the Coffea arabica L. and Coffea canephora Pierre is the largest representative of the Coffea canephora Pierre is the coffea conillon. Food irradiation is an area of research that aims to increase the shelf life of foods and controlling pests. This study aimed to verify the physicochemical variables of Arabica coffee and conillon were affected when exposed to doses of gamma radiation from cobalt-60. The samples were provided by Polo in Coffee Quality Technology, Federal University of Lavras - UFLA. The coffee samples were subjected to irradiation doses: 0 (control), 5 kGy and 10 kGy, a multipurpose irradiator of IPEN - Research Institute of Nuclear Energy and the University of São Paulo, at a rate of 7.5 kGy / hour. For irradiation the samples were vacuum-packed in appropriate packaging aluminised. After the process of irradiation the samples were stored at a temperature of 15 ± 1 deg C and relative humidity of 17 ± 1%. The following analyzes were performed: levels of total sugars, glucose, sucrose, caffeine, humidity, pH, total acidity, electrical conductivity and fibers. Analyses were performed 1, 30, 60 and 90 days after irradiation, and the results were submitted to analysis of variance and means were compared by Tukey test at 5%. It was observed that the analysis results of the samples irradiated with 5 kGy and 10 kGy showed values similar to the control. It was concluded that irradiation did not induce deleterious effects on arabica coffee seeds and conillon irradiated with 5 kGy and 10 kGy to 90 days after irradiation. (author)

  20. Evaluation of color and radon exhalation rate in granite rocks between accelerated aging cycles; Avaliacao da cor e taxa de exalacao de radonio em rochas graniticas entre ciclos de envelhecimento acelerado

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Francisco Diones Oliveira

    2016-07-01

    Data used for the assessment of the analyzes performed on three types of dimension stone (Juparana Bordeaux, Branco Nevasca and Golden Artico), in natural state and after several cycles of accelerated aging are presented, correlating them with the gas exhalation rate radon issued by the analyzed lithologies. In the samples were conducted permeability, porosity, colorimetry, image analysis, petrographic and exhalation rate of radon, accompanied by aging tests on climate simulation chamber which simulates change situations of materials by weathering agents, accelerating wear and tear samples. The measurements were performed on samples in natural state, with 50 and 100 cycles of aging acceleration, where each cycle corresponds to variations in temperature and humidity in climatic simulation chamber, with the addition of an internal atmosphere of SO{sub 2} with 25 concentration ppm. The results obtained during the tests were related to better analysis of the changes observed on the samples and the variation rate of exhalation radon emitted. The rocks have radon concentration values above the limits suggested by relevant international agencies (200-400 Bq/m³), with average values in the natural state, in 6149, 1619 and 866 Bq/m³ for Juparana Bordeaux, Branco Nevasca and Golden Arctic, respectively. The other aging cycles (50 and 100 cycles) showed an average increase of 0.8% for Juparana Bordeaux, 6.9% for White Blizzard and -23.87% for the Golden Arctic, with 50 cycles. From 50 to 100 cycles, there was reduction of 3.43% for Juparana Bordeaux and 22.15% for Branco Nevasca and an increase of 13.82% in the Golden Artico. The porosity results in the natural state obtained values an average of 0.696% for Juparana Bordeaux, 0.919% for Branco Nevasca and 0.830% for Golden Artico, and after 50 cycles of accelerated aging, obtained 0.621% to Juparana Bordeaux, 0.910% for Branco Nevasca and 0.840% for Golden Artico. The permeability of the samples showed values in the natural

  1. Evaluation of mercury contamination in sediments from Santos - Sao Vicente Estuarine system, in period of 1996 -2000; Avaliacao da contaminacao por mercurio dos sedimentos do Estuario Santos - Sao Vicente, no periodo de 1996-2000

    Energy Technology Data Exchange (ETDEWEB)

    Hortellani, Marcos Antonio

    2003-07-01

    The distribution of mercury contamination in the Santos - Sao Vicente Estuarine System was observed through the analysis of seventy seven surface sediments samples collected in two series. In different periods and points, since the Channel of Piacaguera, the head of the system, , through the estuarine arms of Santos and Sao Vicente as far as the Bay of Santos, about 30 Km downstream, and in different mangrove areas, including industrial and harbor influence zones. The obtained values ranged from 0.03 to 1.19 {mu}g g {sup -1} About 90% of the samples of the first series collected among 1997-1998 and 50% of the second series collected among 1999-2000 presented levels of Hg > 0,13 {mu}g g {sup -1} ,limit considered by the Canadian legislation and adopted by CETESB, below which doesn't happen adverse effect in the biological community. And about 35% of samples of the first series and 11 % of the second series presented concentrations of Hg > 0.698 {mu}g g {sup -1} probable level of occurrence of adverse effect in the biological community. These results indicate an increase of the mercury levels caused by the industrial, port and urban activities. The mercury concentration in sediments was determined by using an Atomic Absorption Spectrophotometer, coupling with a flow injection system by a cold vapor generation, using a manual injection valve (FIA-CVAAS). The estimate of the uncertainties associated to this procedure was calculated. The following elements were also determined: Fe, Al, Zn, Ni, Pb, Cd, Cr and Co in 46 samples of the second series, by atomic absorption spectrometry. In order to verify possible relationship among all the investigated elements in the samples sediments, was carried out a statistical study, using the SPSS-8.0 software. Pearson correlation and Principal Component's analysis were used for with the objective to identify of major relationship for additional exploration of the general behavior of the data. (author)

  2. Evaluation of the efficiency of a tubular digester in the reduction of organic load of biogas from swine wastes; Avaliacao da eficiencia de um biodigestor tubular na reducao da carga organica de biogas a partir de dejetos de suinos

    Energy Technology Data Exchange (ETDEWEB)

    Angonese, Andre Ricardo [Universidade Estadual do Oeste do Parana (UNIOESTE), PR (Brazil)], Email: aangonese@yahoo.com.br; Campos, Alessandro Torres [Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, MG (Brazil)], Email: atcampos3@yahoo.com.br; Moreno Palacio, Soraya [Universidade Estadual de Maringa (UEM), PR (Brazil); Szymanski, Nayara [Universidade Estadual do Oeste do Parana (UNIOESTE), PR (Brazil). Curso de Quimica

    2006-07-01

    The purpose of this study was to assess the efficiency of the anaerobic biological treatment systems in the reduction and stabilization of biodegradable organic matter of swine waste. The experiment was carried out at Vale dos Ipes Farm, located in the city of Ouro Verde do Oeste, in the Western of Parana State. One finishing phase swine unity containing 600 animals was monitored from January to June 2005. The system is composed by one steel digester with capacity for 50 m{sup 3}. The swine barn cleaning is performed by dry scratching on a daily basis. The generated residues flow by gravitation through ducts towards the digester. The duration of the hydraulic retention period was 12 days. The residues analysis was performed by means of sampling at the entrance and way out of the digester. The following parameters were analyzed: pH, DBO{sub 5}, DQO, total solids, total volatile solids, total fixed solids, total nitrogen e ammonia, potassium, total phosphate, average of biogas production. The results suggested that the anaerobic biological treatment system was efficient for reducing and stabilizing the organic matter resulted from the swine wastes. Expressive reductions of DBO, DQO, ST and SVT of 76, 77, 43 and 59% respectively, were obtained for the effluent originated by the digester. The average daily production of biogas during the analyzed period was 31, 5 m{sup 3}. (author)

  3. Evaluation of radioiodine therapy with fixed doses of 10 and 15 mCi in patients with Graves disease; Avaliacao da radioiodoterapia com doses fixas de 10 e 15 mCi em pacientes com doenca de Graves

    Energy Technology Data Exchange (ETDEWEB)

    Canadas, Viviane; Vilar, Lucio; Moura, Eliane; Brito, Ana; Castellar, Enio [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Hospital das Clinicas. Servico de Endocrinologia]. E-mail: vivi2207@ig.com.br

    2007-10-15

    The treatment options for the hyperthyroidism of Graves' disease are antithyroid drugs, surgery and radioiodine, none of which is considered ideal, as they do not act directly on the etiopathogenesis of the disease. Radioiodine has been increasingly used as the treatment of choice because it is a safe and definitive therapy whose administration is very easy. Some authors prefer to administer higher doses in order to deliberately induce hypothyroidism, while others recommend lower doses that result in a lower incidence of hypothyroidism and a greater incidence of euthyroidism. There is no consensus for the optimal regimen of fixed doses to be used and this is the main focus of the present study, where doses of 10 and 15 mCi of {sup 131}I were compared. Among the 164 patients analyzed, 61 (37.2%) were submitted to 10 mCi and 103 (62.8%) to 15 mCi. In the longitudinal analysis it was observed that remission of the hyperthyroidism was statistically different in the sixth month (p < 0.001), being higher in the group that used the dose of 15 mCi, but similar in both groups at 12 and 24 months. It may be concluded that the administration of fixed doses of 10 and 15 mCi of {sup 131}I brought about a similar remission of the hyperthyroidism after 12 months of treatment. Moreover, the remission rate of the hyperthyroidism had no association with age, sex or previous therapy with antithyroid drugs. (author)

  4. Evaluation of the physico-chemical properties of nanocomposites of low density linear polyethylene and organophilic montmorillonite obtained by fusion; Avaliacao das propriedades fisico-quimicas de nanocompositos de polietileno linear de baixa densidade e montmorilonita organofilica obtidos por fusao

    Energy Technology Data Exchange (ETDEWEB)

    Arndt, Aline; Sandrin, Bianca M.; Pezzin, A.P.T., E-mail: anapezzin@yahoo.com.br [Universidade da Regiao de Joinville (UNIVILLE), SC (Brazil); Meier, Marcia M. [Universidade do Estado de Santa Catarina (UESC), Joinville, SC (Brazil). Departamento de Quimica; Balzer, Palova S. [Centro Universitario Unisociesc, Joinville, SC (Brazil). Departamento de Engenharia Mecanica; Tavares, Maria I.B. [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Laboratorio de Solucoes em Ralaxometria

    2016-07-01

    In this project they were produced and characterized nanocomposite organoclay applied to linear low density polyethylene in order to improve their physicochemical properties. Samples were produced by means of extrusion and injection process, varying proportions of nanoclay (2; 2.5; 3.0 and 3.5%) in LLDPE. Samples nanocomposites were characterized by TGA, DSC and Flammability test (UL-94). The TGA analysis showed that adding nanoclay increased thermal stability, especially for LLDPE / OMMT2,0 sample increased thermal stability at 4.4%. By DSC it was found that samples with nanoclay incorporation did not affect the Tm of LLDPE, though the increase of nanoclay raised the degree of crystallinity of the samples 52.7% in LLDPE / 2.5 OMMT sample. The flammability results show that the sample LLDPE / OMMT 2.0 showed a decrease of 37.77% in the flame propagation velocity. The NMR showed that the samples up LLDPE / 2.5 OM has an exfoliated nanocomposite formation. (author)

  5. Evaluation of synergistic effect in vacuum pack, refrigeration and irradiated treatments of minimally processed cassava; Avaliacao do efeito sinergistico da embalagem a vacuo, irradiacao e refrigeracao da mandioca minimamente processada

    Energy Technology Data Exchange (ETDEWEB)

    Pedroso, Bianca Maria

    2005-07-01

    Cassava is cultivated almost all over the world and it is considered one of the most important nutritious sources of calories in the human diet. Cassava is a viable food against starvation in several poor areas of the world because it is an extremely resistant culture and may reach satisfactory economical yield. We utilized vacuum packed industrialized cassava irradiated with 0,1 kGy, 3kGy and 5kGy and stored under refrigeration for 1, 21, 30 and 50 days. Our objective was to analyse the synergistic effect of vacuum packing, irradiation and refrigeration on the preservation of minimally processed cassava. The samples were analyzed for pH, acidity, weight, humidity, texture and color. The irradiation did not affect the chemical characteristics of the cassava. Neither the pH nor the acidity, the most relevant variables to verify deterioration in cassava, presented significant alterations during the period of storage. Comparing the irradiated treatments, the dose of 1kGy and 3kGy affected the physic-chemical characteristics of the cassava the least during the period of storage and refrigeration for 50 days; the doses of 1kGy,3kGy and 5kGy scored the highest rates the sensorial analysis during the period of storage for 21 days. (author)

  6. Evaluation of skin entrance radiation dose in pediatric patients undergoing chest X-rays exams; Avaliacao da dose de entrada na pele em pacientes pediatricos submetidos a exames radiograficos do torax

    Energy Technology Data Exchange (ETDEWEB)

    Gabardo, Farly Piantini

    2016-07-01

    The aim of this work was to estimate the incident air kerma of lateral (LAT) and anterior-posterior (AP) together with posterior-anterior (PA) projection chest X-ray exams in one of the largest pediatric hospitals in Brazil. Dosimetric results are accompanied with the detailed analysis of patient characteristics and radiographer strategy. The exams of 225 (119 male and 106 female) patients were studied and 389 X-ray exams (200 AP/PA projections and 189 LAT projections) of pediatric patients were acquired. Patient thickness can be restored from age, height or weight with the uncertainty of ∼20-30%. Very slight correlation between the patient dose and thickness was observed with the difference in dose for patients of the same thickness reaching 4 times. By standardization of radiological protocols, it should be possible to keep dose within the intervals 50-100 μGy for LAT projection and 40-80 μGy for AP/PA projection. The dose values are lower than those recommended by major European guidelines to good practice. (author)

  7. Assessment of environmental impact models in natural occurring radionuclides solid wastes disposal from the mineral industry; Avaliacao de modelos de impacto ambiental para deposicao de residuos solidos com radionuclideos naturais em instalacoes minero-industriais

    Energy Technology Data Exchange (ETDEWEB)

    Pontedeiro, Elizabeth May Braga Dulley

    2006-07-15

    This work evaluates the behavior of wastes with naturally occurring radionuclides as generated by the mineral industry and their final disposal in landfills. An integrated methodology is used to predict the performance of an industrial landfill for disposal of wastes containing NORM/TENORM, and to define acceptable amounts that can be disposed at the landfill using long-term environmental assessment. The governing equations for radionuclide transport are solved analytically using the generalized integral transform technique. Results obtained for each compartment of the biogeosphere are validated with experimental results or compared to other classes of solutions. An impact analysis is performed in order to define the potential consequences of a landfill to the environment, considering not only the engineering characteristics of the waste deposit but also the exposure pathways and plausible scenarios in which the contaminants could migrate and reach the environment and the human population. The present work permits the development of a safety approach that can be used to derive quantitative waste acceptance criteria for the disposal of NORM/TENORM waste in landfills. (author)

  8. Project and evaluation of a 2000 meter offshore horizontal well production extra-heavy oil; Projeto e avaliacao de um poco offshore com 2000 m de trecho horizontal produtor de oleo extra-pesado

    Energy Technology Data Exchange (ETDEWEB)

    Ueta, Eduardo M.; Kato, Edson T.; Tinoco, Francisco L.; Vieira, Paulo M.F. [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The project was proposed to acquire reservoir data, for the development of the Member (Mb) Siri in the concession of Badejo in Campos Basin, having extra-heavy oil, through long and large bore horizontal well. The main objectives were: to obtain the petrophysical properties through continuous coring of the oil and water zones; water sampling for the characterization; to verify the effective length of the horizontal well through production logging; to obtain the reservoir productivity and permeability through formation test; to obtain the oil PVT properties through monophasic sampling and to know the lateral variability of the accumulation. New technologies were used as geochemical geosteering, diversionary acidification and chemical tracer production logging. The well test analysis showed permeability and productivity values better than as expected and making possible the development of pilot project in order to evaluate the aquifer behavior, the long term well productivity and performance of the elevation and behavior of the extra-heavy oil offloading for subsequent development of the reservoir. (author)

  9. Accountability and non-proliferation nuclear regime: a review of the mutual surveillance Brazilian-Argentine model for nuclear safeguards; Accountability e regime de nao proliferacao nuclear: uma avaliacao do modelo de vigilancia mutua brasileiro-argentina de salvaguardas nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Xavier, Roberto Salles

    2014-08-01

    The regimes of accountability, the organizations of global governance and institutional arrangements of global governance of nuclear non-proliferation and of Mutual Vigilance Brazilian-Argentine of Nuclear Safeguards are the subject of research. The starting point is the importance of the institutional model of global governance for the effective control of non-proliferation of nuclear weapons. In this context, the research investigates how to structure the current arrangements of the international nuclear non-proliferation and what is the performance of model Mutual Vigilance Brazilian-Argentine of Nuclear Safeguards in relation to accountability regimes of global governance. For that, was searched the current literature of three theoretical dimensions: accountability, global governance and global governance organizations. In relation to the research method was used the case study and the treatment technique of data the analysis of content. The results allowed: to establish an evaluation model based on accountability mechanisms; to assess how behaves the model Mutual Vigilance Brazilian-Argentine Nuclear Safeguards front of the proposed accountability regime; and to measure the degree to which regional arrangements that work with systems of global governance can strengthen these international systems. (author)

  10. Evaluation of inflammatory processes in temporomandibular joint employing technetium-99m-labelled autologous leukocytes in an animal model; Avaliacao de processos inflamatorios na articulacao temporomandibular empregando leucocitos autologos marcados com tecnecio-99m em modelo animal

    Energy Technology Data Exchange (ETDEWEB)

    Brasileiro, Claudia Borges [Centro Universitario Newton Paiva, Belo Horizonte, MG (Brazil)]. E-mail: claudiabb.prof@newtonpaiva.br; cbbrasileiro@bol.com.br; Cardoso, Valbert Nascimento; Ruckert, Bianca [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Faculdade de Farmacia; Campos, Tarcisio Passos Ribeiro de [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Escola de Engenharia. Dept. de Engenharia Nuclear

    2006-07-15

    Objective: the present study was aimed at identifying temporomandibular joint inflammatory processes employing technetium-99m hexamethyl propylene amine oxime (99mTc-HMPAO)-labeled autonomous leukocytes. Materials and methods: we have utilized an experimental model of arthritis induction in ten adult male New Zealand rabbits by means of ovalbumin intra-articular injection into each left temporomandibular joint. For control purposes, saline solution was injected. After leukocytes radiolabeling with 99mTc-HMPAO and injection into rabbits, scintigraphic images were obtained. Results: a higher 99mTc-HMPAO-leukocytes uptake was observed in left temporomandibular joint in comparison with the contralateral joint. Wilcoxon non-parametric test was applied for statistical analysis. There was a statistically significant difference between counts of radioactivity per minute in the inflamed joint and the contralateral one (p = 0.0073). Conclusion: the method employing 99mTc-HMPAO-labelled autologous leukocytes allows an early and accurate detection of inflammatory processes, contributing to the adoption of a therapeutic conduct for patients before structural alterations have occurred. (author)

  11. Evaluation of the of thermal shock resistance of a castable containing andalusite aggregates by thermal shock cycles; Avaliacao da resistencia ao dano por choque termico por ciclagem de um concreto refratario contendo agregados de andaluzita

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, G.C.R.; Santos, E.M.B.; Ribeiro, S., E-mail: girribeiro@yahoo.com.br [Universidade de Sao Paulo (DEMAR/EEL/USP), Lorena, SP (Brazil). Escola de Engenharia de. Departamento de Engenharia de Materiais; Resende, W.S. [Industrias Brasileiras de Artigos Refratarios (IBAR), Lorena, SP (Brazil); Rodrigues, J.A. [Universidade Federal de Sao Carlos (UFSCar), SP (Brazil)

    2011-07-01

    The thermal shock resistance of refractory materials is one of the most important characteristics that determine their performance in many applications, since abrupt and drastic differences in temperature can damage them. Resistance to thermal shock damage can be evaluated based on thermal cycles, i.e., successive heating and cooling cycles followed by an analysis of the drop in Young's modulus occurring in each cycle. The aim of this study was to evaluate the resistance to thermal shock damage in a commercial refractory concrete with andalusite aggregate. Concrete samples that were sintered at 1000 deg C and 1450 deg C for 5 hours to predict and were subjected to 30 thermal shock cycles, soaking in the furnace for 20 minutes at a temperature of 1000 deg C, and subsequent cooling in circulating water at 25 deg C. The results showed a decrease in Young's modulus and rupture around 72% for samples sintered at 1000 ° C, and 82% in sintered at 1450 ° C. The refractory sintered at 1450 deg C would show lower thermal shock resistance than the refractory sintered at 1000 deg C. (author)

  12. Evaluation of non-conformities of hip prostheses made of titanium alloys and stainless steel; Avaliacao de nao conformidades de proteses de quadril fabricadas com ligas de titanio e aco inox

    Energy Technology Data Exchange (ETDEWEB)

    Bezerra, Ewerton de Oliveira Teotonio; Nascimento, Jose Jeferson da Silva; Luna, Carlos Bruno Barreto; Morais, Crislene Rodrigues da Silva; Campos, Karla Valeria Miranda de, E-mail: ewerton.teotonio@hotmail.com, E-mail: brunobarretodemaufcg@hotmail.com [Universidade Federal de Campina Grande (UAEMa/CCT/UFCG), PB (Brazil). Unidade Academinca de Engenharia de Materiais

    2017-01-15

    A large number of metallic alloys has satisfactory behavior when used to manufacture implants for hip prostheses. However, they must be in conformity with standards, to ensure their quality for long periods without losing its functionality. Therefore, this paper aims to study the non-conformities in two hip prostheses, one of titanium and other stainless steel according to standards. The implants studied passed by X-ray diffraction (XRD), X-ray fluorescence, tensile test and optical microscopy (OM). Specimens for the tensile test were made according to ASTM E 8M, as well, MO samples passed by metallographic procedure. The results evidenced that some chemical compositions showed in relation to the standards. The XRD analysis showed peaks of austenite and absence of ferrite for the stainless steel, while the titanium alloy presents an alpha phase (HCP) more significant than the beta phase (BCC). The stainless steel alloys and titanium have yield strength and tensile strength that meet the standards. On the other hand, the elastic modulus of the titanium alloy and stainless steel, comes to be ten times greater than the human bone. Therefore, the high modulus of elasticity of the alloys, favors bone resorption problems. The stainless steel microstructure is typical of an austenitic matrix, while the titanium alloy presents α + β microstructure. (author)

  13. Development of a methodology for doss assessment viewing the use of NORM on building materials; Desenvolvimento de uma metodologia para avaliacao de doses visando o uso de NORM em materiais de construcao

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Antonio Fernando Costa de

    2009-07-01

    The objective of this study was to develop a methodology for estimating the radiological impact on man of the residues of naturally occurring radioactive materials (NORMs) that potentially can be used for the construction of homes and roads. Residues of this type, which are being produced in great quantities by the Brazilian mining industry, are typically deposited in non-appropriated conditions such that they may have a long-time adverse impact on the environment, and hence on man. A mathematical model was developed to calculate the doses resulting from the use of NORM residues, thus allowing a preliminary analysis of the possibility to recycle the residues. The model was used to evaluate the external dose due gamma radiation, the dose to skin caused by beta radiation, and the internal dose due to inhalation of radon and its decay products. The model was verified by comparisons with results of other studies about doses due to gamma and beta radiation from finite and infinite radioactive sources, with relatively good agreement. In order to validate the proposed methodology, a comparison was made against experimental results for a house constructed in accordance with CNEN regulations using building materials containing NORM residues. Comparisons were made of the dose due to gamma radiation and the radon concentration in the internal environment. Finally, the methodology was used also to estimate the dose caused by gamma radiation from a road constructed in the state of Rondonia, Brazil, which made use of another NORM residue. (author)

  14. Evaluation of rheological behavior and sensory properties of ready to eat salad dressings submitted to irradiation; Avaliacao do comportamento reologico e das propriedades sensoriais de molhos comerciais para salada tratados por irradiacao

    Energy Technology Data Exchange (ETDEWEB)

    Gallo, Juliana Maria Altavista Sagretti

    2013-08-01

    This study evaluated the rheological behavior of 11 salad dressings ready to eat, processed by gamma irradiation, at doses: 3 kGy and 5 kGy. This assessment was made by rheograms traced by measurements of viscosity and shear stress by shear rate. Mathematical parameters obtained from these measures also contributed to the conclusion of the behavior exhibited and for choosing the best mathematical model applicable to them. The measurements were performed on a Brookfield viscometer Model LVDV - III. The Neslab thermal bath was used to maintain ambient temperature during the whole analysis. This study protocol was done in two stages. In step 1, the evaluation was performed soon after the samples have been irradiated when these were close to their dates of manufacture. In phase 2 the samples were reassessed after a period of storage, near the expiration date of their validity. Simultaneously pH measurement was performed to evaluate their stability in the face of treatment and sensory analyzes of two salad dressings were studied, in order to verify the acceptance of these when submitted to irradiation. The shear-thinning behavior was confirmed for all dressings through the mathematical model, the power law, that best model apply to this, in both phases. The irradiation at the absorbed doses studied did not influence this behavior. The results of sensory evaluation indicated good acceptance of irradiated sauces for the tasters. (author)

  15. Evaluation of operational and energetic performances of combine harvesters in soybean (Glycine max (L.) Merril) crop; Avaliacao dos desempenhos operacional e energetico de colhedoras na cultura de soja (Clycine max (L) Merril)

    Energy Technology Data Exchange (ETDEWEB)

    Mazetto, Flavio Rielli [UNESP, Botucatu, SP (Brazil). Faculdade de Ciencias Agronomicas. Curso de Pos-Graduacao em Energia na Agricultura; Lancas, Kleber Pereira [UNESP, Botucatu, SP (Brazil). Faculdade de Ciencias Agronomicas. Dept. de Engenharia Rural

    2009-07-01

    The objective of the present study consisted of evaluating three soybean combine harvesters, the first one with 7.62 m width header, 176.4 kW engine power and 7,200 L grain tank size, the second one with 7.01 m width header, 161.7 kW engine power and 6,700 L grain tank size and the third one with 6.71 m width header, 165.4 kW engine power and 6,000 L grain tank size with its respective mechanisms actuators, to identify the most efficient system in rationalization energy demand and operational performance. The combine harvest test was done at Igreja Velha farm, Tibagi/Parana State and the data analysis were done at FCA-UNESP, Campus de Botucatu/SP (Sao Paulo State University - Botucatu). The fuel consumption evaluation was made through the use of fluxometer in normal combine operation conditions and for the operational performance was determined all the running machine times. The combine with wider grain header, higher grain tank capacity, bigger engine power, rotary separator in the separation system and self-leveling sieves showed greater operational performance and less fuel consumption than the others combines tested. (author)

  16. Evaluation of the dose absorbed by the thyroid of patients undergoing treatment of Graves disease;Avaliacao da dose absorvida pela tireoide de pacientes submetidos ao tratamento da doenca de Graves

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Tiago L.; Filho, Joao A. [Universidade Catolica de Pernambuco (UNICAP), Recife, PE (Brazil). Dept. de Fisica; Silva, Jose M.F. da [Universidade Federal de Pernambuco (DEN/UFPE), Recife, PE (Brazil). Dept. de Energia Nuclear

    2009-07-01

    The radioiodine is used as complementary treatment of thyroid cancer and as first choice for the treatment of Graves' disease, being efficient, safe and easy administration, but without there is a protocol defined. This work was evaluated the thyroid absorbed dose from its mass and maximum uptake of I-131 obtained in the examination of diagnostic radiology of radiotherapeutic patients undergoing treatment of Graves' disease. Based on the results, it is observed that the thyroid absorbed dose, as much in terms of mass as the maximum uptake of I-131 for different values of administered activity, varies significantly. The analysis of these parameters is an excellent indicator for the pre-define quantity of radionuclide that is administered to the patient in terms of the radiation dose required to achieve an efficient therapeutic treatment. Moreover, it was observed that the thyroid absorbed dose depends on the degree of pathology of the disease, its mass and of the maximum uptake of I-131. (author)

  17. Development of methodology for evaluation of {sup 99m}Tc and {sup 131}I incorporated activities during lactation; Desenvolvimento de metodologia para avaliacao da atividade de {sup 99m}Tc e {sup 131}I em lactantes

    Energy Technology Data Exchange (ETDEWEB)

    Santos, L. [Universidade Federal do Rio de Janeiro (IF/UFRJ), RJ (Brazil). Inst. de Fisica; Dantas, A.L.A.; Mesquita, S.A. [Universidade Federal do Rio de Janeiro (IF/UFRJ), RJ (Brazil). Inst. de Fisica; Oliveira, S.M.V., E-mail: adantas@ird.gov.br, E-mail: silvia@ird.gov.br [Universidade Federal do Rio de Janeiro (IF/UFRJ), RJ (Brazil). Inst. de Fisica; Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil). Div. de Dosimetria

    2012-07-01

    Internal contamination of babies may occur for milk ingestion or inhalation of mothers occupationally exposed to ionizing radiation with possible incorporation or mothers submitted to medical exposures during lactation. Radionuclide concentrations in the mother's milk may cause organ absorbed doses in the babies proportionally to the breast volumes. Milk analysis allow to determine activities ingested by the babies by determining the peak of mother's milk considering the decrease of the activity rate and the milk activities drunk at different time intervals. The work had the aim to develop simulators and methodology to evaluate {sup 99m}Tc and {sup 131}I in lactation, in the following steps: to prepare standard solution of contaminated milk separately with {sup 99m}Tc and {sup 131}I; to build four breast simulators (600 g and 800 g) and respective calibration for two geometries (breast and whole-body) in the Whole-Body Counter Unit in Instituto de Radioprotecao e Dosimetria. The results demonstrated the system efficiency to determine {sup 99m}Tc and {sup 131}I activities in breasts during the lactation period. The methodology for positioning in the 'breast geometry' seemed to be more efficient than the 'whole-body geometry' for different breast volumes. The experiment allows achieving better evaluation of internal dosimetry of mothers and their young children. (author)

  18. Automatic alignment device for focal spot measurements in the center of the field for mammography; Sistema automatico de alinhamento para avaliacao do ponto focal no centro do campo de equipamentos mamograficos

    Energy Technology Data Exchange (ETDEWEB)

    Vieira, Marcelo A.C.; Watanabe, Alex O.; Oliveira Junior, Paulo D.; Schiabel, Homero [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Escola de Engenharia. Dept. de Engenharia Eletrica], e-mail: mvieira@sc.usp.br

    2010-03-15

    Some quality control procedures used for mammography, such as focal spot evaluation, requires previous alignment of the measurement equipment with the X-ray central beam. However, alignment procedures are, in general, the most difficult task and the one that needs more time to be performed. Moreover, the operator sometimes is exposed to radiation during this procedure. This work presents an automatic alignment system for mammographic equipment that allows locating the central ray of the radiation beam and, immediately, aligns with it by dislocating itself automatically along the field. The system consists on a bidirectional moving device, connected to a CCD sensor for digital radiographic image acquisition. A computational analysis of a radiographic image, acquired at any position on the field, is performed in order to determine its positioning under the X-ray beam. Finally, a mechanical system for two moving directions, electronically controlled by a microcontroller under USB communication, makes the system to align automatically with the radiation beam central ray. The alignment process is fully automatic, fast and accurate, with no operator exposure to radiation, which allows a considerable time saving for quality control procedures achievement for mammography. (author)

  19. Morphofunctional evaluation of human skin preserved in glycerol and exposed to gamma radiation: a study in athymic mice; Avaliacao morfofuncional de pele humana conservada em glicerol e submetida a radiacao gama: estudo em camundongos atimicos

    Energy Technology Data Exchange (ETDEWEB)

    Bringel, Fabiana de Andrade

    2011-07-01

    Extensive skin lesions expose the body to damaging agents, which makes spontaneous regeneration difficult and, in many cases, leads patient to death. In such cases, if there are no donating areas for autograft, allografts can be used. In this type of graft, tissue is processed in tissue banks, where it can be subjected to radiosterilization. According to in vitro studies, gamma radiation, in doses higher than 25 kGy, induces alterations in skin preserved in glycerol at 85%, reducing the tensile strength of irradiated tissue. Clinical observation also suggests faster integration of such graft with the receptors tissue. In order to assess if the alterations observed in vitro, would compromise in vivo use, transplants of human tissue, irradiated or not, were performed in Nude mice. The skin of the mice was subjected to macroscopic analysis, optical coherence tomography imaging, histological and biomechanical assays. It was possible to conclude that grafts irradiated with 25 kGy promoted greater initial contraction, without alteration of the final dimensions of the repair area, also displaying a faster closing of the wound. Moreover, the use of irradiated grafts (25 and 50 kGy) enabled the formation of a more organized healing process without significant effects on biomechanical properties. (author)

  20. Evaluation of radio-induced DNA damage and their repair in human lymphocytes by comet assay or single cell gel electrophoresis; Avaliacao do dano radioinduzido no DNA e reparo em linfocitos humanos pelo metodo do cometa (single cell gel electrophoresis)

    Energy Technology Data Exchange (ETDEWEB)

    Nascimento, Patricia A. do; Suzuki, Miriam F.; Okazaki, Kayo [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)

    1997-12-01

    The comet assay, also called single cell gel electrophoresis technique, permits to evaluate quantitatively DNA breakage induced by chemical and physical agents at the level of the single cell. The present paper refers to the construction of dose-response curves to DNA damage and repair studies in human peripheral lymphocytes, utilizing the comet assay for the radiosensitivity analysis. So, the blood samples were obtained from healthy donors (40-50 year old), irradiated in a {sup 60} Co source (GAMMACEL 220) with doses of 0.17, 0.25, 0.57, 1.10, 2.12 and 4.22 Gy (0.59 Gy/min.) and processed 1 and 24 hours after the exposition. Results obtained showed a increase in the total lenght of comet (DNA migration) as a function of radiation dose in samples processed 1 and 24 hours after the treatment. The DNA lesion in irradiated lymphocytes with 4.22 Gy (means value of 101.4 {mu}m) were 3.4 times higher than in the untreated lymphocytes (mean value of 30 {mu}m) instead of 24 hours after the irradiation were 1.5 times higher (mean value of 46.3 {mu}m). This reduction on DNA repair occurred in these cells. It was also possible visualized the presence of subpopulations of the cells with different sensitivity and repair capacity to ionizing radiation in these donors. (author). 8 refs., 3 figs.

  1. Analysis of Minimum Efficiency Performance Standards for Residential General Service Lighting in Chile

    Energy Technology Data Exchange (ETDEWEB)

    Letschert, Virginie E.; McNeil, Michael A.; Leiva Ibanez, Francisco Humberto; Ruiz, Ana Maria; Pavon, Mariana; Hall, Stephen

    2011-06-01

    Minimum Efficiency Performance Standards (MEPS) have been chosen as part of Chile's national energy efficiency action plan. As a first MEPS, the Ministry of Energy has decided to focus on a regulation for lighting that would ban the sale of inefficient bulbs, effectively phasing out the use of incandescent lamps. Following major economies such as the US (EISA, 2007) , the EU (Ecodesign, 2009) and Australia (AS/NZS, 2008) who planned a phase out based on minimum efficacy requirements, the Ministry of Energy has undertaken the impact analysis of a MEPS on the residential lighting sector. Fundacion Chile (FC) and Lawrence Berkeley National Laboratory (LBNL) collaborated with the Ministry of Energy and the National Energy Efficiency Program (Programa Pais de Eficiencia Energetica, or PPEE) in order to produce a techno-economic analysis of this future policy measure. LBNL has developed for CLASP (CLASP, 2007) a spreadsheet tool called the Policy Analysis Modeling System (PAMS) that allows for evaluation of costs and benefits at the consumer level but also a wide range of impacts at the national level, such as energy savings, net present value of savings, greenhouse gas (CO2) emission reductions and avoided capacity generation due to a specific policy. Because historically Chile has followed European schemes in energy efficiency programs (test procedures, labelling program definitions), we take the Ecodesign commission regulation No 244/2009 as a starting point when defining our phase out program, which means a tiered phase out based on minimum efficacy per lumen category. The following data were collected in order to perform the techno-economic analysis: (1) Retail prices, efficiency and wattage category in the current market, (2) Usage data (hours of lamp use per day), and (3) Stock data, penetration of efficient lamps in the market. Using these data, PAMS calculates the costs and benefits of efficiency standards from two distinct but related perspectives: (1) The

  2. Evaluation of gamma irradiation effects on carotenoids, ascorbic acid and sugar contents of buriti fruit (Mauritia flexuosa L.); Avaliacao dos efeitos da radiacao gama nos teores de carotenoides, acido ascorbico e acucares do fruto Buriti do Brejo (Mauritia flexuosa L.)

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Antonio Luis dos Santos [Instituto Militar de Engenharia (IME), Rio de Janeiro, RJ (Brazil). Secao de Engenharia Quimica, Quimica Organica e de Produtos Naturais], e-mail: santoslima@ime.eb.br; Lima, Keila dos Santos Cople; Silva, Jaqueline Michele [Instituto Militar de Engenharia (IME), Rio de Janeiro, RJ (Brazil). Secao de Engenharia Nuclear. Irradiacao de Alimentos], e-mail: keila@ime.eb.br, e-mail: jaquelinefisica@bol.com.br; Coelho, Maysa Joppert [Instituto Militar de Engenharia (IME), Rio de Janeiro, RJ (Brazil). Secao de Engenharia Nuclear. Engenharia Ambiental], e-mail: maysa@ime.eb.br; Godoy, Ronoel Luiz de Oliveira [EMBRAPA Agroindustria de Alimentos, Rio de Janeiro, RJ (Brazil). Lab. de Cromatografia Liquida, Quimica Organica e de Produtos Naturais], e-mail: ronoel@ctaa.embrapa.br; Pacheco, Sidney [EMBRAPA Agroindustria de Alimentos, Rio de Janeiro, RJ (Brazil). Lab. de Cromatografia Liquida, Ciencia e Tecnologia de Alimentos], e-mail: sidney@ctaa.embrapa.br

    2009-07-01

    Buriti (Mauritia flexuosa L.), a typical fruit from the Northeast and Center-West Amazon of Brazil, is used in many regional dishes. It is considered an excellent source of carotenoids that are A vitamin precursors, showing a majority of beta-carotene. It also presents ascorbic acid and sugar contents. Many studies have indicated that the lack of A vitamin is the main cause of night blindness and xerophthalmia. Also, ascorbic acid deficiency may cause scorbutic disease. The use of food irradiation is growing and represents an economic benefit to agriculture through the reduction of post-harvesting losses while maintaining food nutritional quality. In this study, buriti in natura was treated with gamma irradiation with doses of 0.5 kGy and 1.0 kGy. The objective was to evaluate the irradiation effects on total carotenoids, ascorbic acid and sugars concentrations of buriti. The fruit was evaluated through the total carotenoids analysis, by spectrophotometry, and the carotenoids (alpha and beta-carotene and lutein), ascorbic acid and sugars were determined by high performance liquid chromatography (HPLC). The results showed that buriti is an excellent source of total carotenoids (44600 {mu}g/100 g). The irradiation of buriti with the dose of 0.5 kGy did not significantly change carotenoids and sugars contents. However, there was a reduction of ascorbic acid concentration with an increase of the dose, which may have been caused by irradiation or by intrinsic and extrinsic factors that alter ascorbic acid stability in food, converting ascorbic to dehydroascorbic acid, while keeping the C vitamin active form. (author)

  3. Evaluation of the Analytical Anisotropic Algorithm (AAA) in dose calculation for fields with non-uniform fluences considering heterogeneity correction; Avaliacao do Algoritmo Analitico Anisotropico (AAA) no calculo de dose para campos com fluencia nao uniforme considerando correcao de heterogeneidade

    Energy Technology Data Exchange (ETDEWEB)

    Bornatto, P.; Funchal, M.; Bruning, F.; Toledo, H.; Lyra, J.; Fernandes, T.; Toledo, F.; Marciao, C., E-mail: pricila_bornatto@yahoo.com.br [Hospital Erasto Gaertner (LPCC), Curitiba, PR (Brazil). Departamento de Radioterapia

    2014-08-15

    The purpose of this study is to evaluate the calculation of dose distribution AAA (Varian Medical Systems) for fields with non-uniform fluences considering heterogeneity correction. Five different phantoms were used with different density materials. These phantoms were scanned in the CT BrightSpeed (©GE Healthcare) upon the array of detectors MAPCHECK2 TM (Sun Nuclear Corporation) and irradiated in a linear accelerator 600 CD (Varian Medical Systems) 6MV and rate dose 400MU/min with isocentric setup. The fluences used were exported from IMRT plans, calculated by ECLIPSE™ planning system (Varian Medical Systems), and a 10x10 cm{sup 2} field to assess the heterogeneity correction for uniform fluence. The measured dose distribution was compared to the calculated by Gamma analysis with approval criteria of 3% / 3 mm and 10% threshold. The evaluation was performed using the software SNCPatient (Sun Nuclear Corporation) and considering absolute dose normalized at maximum. The phantoms best performers were those with low density materials, with an average of 99.2% approval. Already phantoms with plates of higher density material presented various fluences below 95% of the points approved. The average value reached 94.3%. It was observed a dependency between fluency and approved percentage points, whereas for the same fluency, 100% of the points have been approved in all phantoms. The approval criteria for IMRT plans recommended in most centers is 3% / 3mm with at least 95% of points approved, it can be concluded that, under these conditions, the IMRT plans with heterogeneity correction can be performed , however the quality control must be careful because the difficulty of the system to accurately predict the dose distribution in certain situations. (author)

  4. Process business risk: a methodology for assessing and mitigating the financial impact of process plant accidents; Avaliacao de risco ao negocio devido a acidentes de processo em plantas industriais

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, Ana Cristina C.; Bardy, Mariana B. [Det Norske Veritas (Brazil)

    2008-07-01

    Traditional risk management has focused on effects on people, particularly when using Quantitative Risk Assessment (QRA). A much broader approach is being adopted nowadays, with companies beginning to consider potential accidental losses in their decision making process. This paper describes a study where business risks from major accident hazards were assessed for a large petrochemical plant. The results are presented as F-Cost curves, which are similar to traditional F-N curves, but represent cumulative frequencies of events versus their cost, instead of fatalities. A different variety of costs can be evaluated as property damage, business interruption, inventory loss, environmental loss, clean-up costs, legal costs, fatality and injury costs, amongst others. As final objective of the study insurance values can be adjusted as well as decisions on reducing risk can be made based on the actual benefit, considering the reduction of losses and the amount to be spent on mitigating major risks. Also, values for civil liability insurance can be reviewed, based on the hazards that can result in fatalities and injuries, as well as property losses, for third parties. This paper presents the results of a study which involved the evaluation of the company's civil liability. The key driver was to consider a more accurate value for the company insurance policy, considering the different losses that major accident can lead on for a community and industries located nearby a petrochemical plant. The results of the analysis are presented as F-Cost curves and we describe the risk-based decision making process and criteria adopted by the company to set the maximum loss value to be insured for civil liability. In conclusion, this paper presents results from a real life example of the application of the quantitative evaluation of business risks, illustrating that a financial or business risk approach can help management in day-to-day decisions when considering possible effects of

  5. Apical microinfiltration evaluation of radicular channels irradiated with Er:YAG laser in vitro; Avaliacao da microinfiltracao apical de condutos radiculares irradiados in vitro com laser de Er:YAG

    Energy Technology Data Exchange (ETDEWEB)

    Sebrao, Catia Cilene Nass

    2003-07-01

    It was evaluated, in vitro, the adaptation of the filling material (Sealer 2S{sup R}) to the root channels dentine walls treated using the endodontic technique and prepared with the Er:YAG laser, by the technique of infiltration of methylene blue dye. Using scanning electronic microscopy, the morphologic alteration of the root channel dentine was observed for one sample per studied group. Also, an evaluation of the temperature increase in the external surface of the root during the irradiations was performed for two samples per group. For each group of samples, with eleven roots each, two sub-groups had been considered: the dry, irradiated after completely dry with absorbent cones of paper, and the humid, where a cone of absorbent paper was applied for two seconds in the root canal, leaving them lightly humidified. Considering the used energies for the irradiations, the groups are: G1, control (without irradiation), G2-dry (100 mJ-10 Hz), G2-humid (100 mJ-10 Hz), G3-dry (140 mJ-6 Hz), G3-humid (140 mJ-6 Hz), G4-dry (180 mJ-6 Hz), and G4-humid (180 mJ-6 Hz). The results had shown that apical microinfiltration did not exhibit significant difference among groups. The highest increase in temperature was observed for the dry groups, with the maximum variation of temperature of 6.5 deg C. Under the scanning electronic microscopy analysis, the humid groups had presented cleaner surfaces than the dry groups. The G4-humid group presented extensive regions of fusion and resolidification of the dentine. (author)

  6. Evaluation of the contribution of contamination of radiotherapy room surfaces in the measure of exposure rate of radioiodine therapy patients; Avaliacao da contribuicao da contaminacao de superficies do quarto terapeutico na medida da taxa de exposicao de pacientes de radioiodoterapia

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Rafael Ferreira

    2015-07-01

    The contamination of radiotherapy room surfaces is significant and the measures of patient exposure rate are held on the fourth dependencies, relevant questions are raised: the background radiation of the room stay high due to surface contamination, may interfere with the rate of patient exposure at the time of its release? The monitoring site is important to determine whether the patient will be released? The value of the deal activity and the clinical condition of the patient may increase the contamination, influencing the monitoring results? This paper aims to conduct a quantitative analysis of surface contamination of the contribution of therapeutic room at the time is monitored exposure rate from inpatient. Measurements were made regarding the hospitalization of 32 patients with different doses administered activity, age and of both genders. The measurements were performed in the therapeutic rooms at the hospital Brotherhood Santa Casa de Misericordia de Sao Paulo. Exposure rate measurements were performed at the center of the room at 1 meter of the patient on the day of its release. After his release and prior to decontamination, measurements were performed at predetermined landmarks within the therapeutic room. The results revealed that on average background radiation, high due to surface contamination contributes only 2% of the patient dose rate. It can be considered that even with influence of contamination of surfaces, this is insignificant to determine if the patient may or may not be released. This study suggests that the site in which monitoring occurs exposure rate of the patient should not be decisive for liberation thereof. (author)

  7. Evaluation of the environmental licensing process for small hydroelectric power plants in Minas Gerais state, Brazil; Avaliacao do processo de licenciamento ambiental para pequenas centrais hidreletricas no estado de Minas Gerais

    Energy Technology Data Exchange (ETDEWEB)

    Pedreira, Adriana Coli

    2004-07-01

    The present situation of the environmental licensing process have been slow and complicated, in relation to the current conception of the sustainable environmental development in the country. The enterprises and impacting activities are being discussed and analysed through a great number of environmental laws and specific laws to each enterprise. These laws along with the inexperience of the enterprises and of the many institutions involved in the process are an obstacle to the development. This document presents the legal and institutional aspects of the environmental licensing for the implementation of small hydroelectric power plants. Laws and doctrine related to the topic were researched and concluded for Minas Gerais State with the help of a survey with the enterprises and institutions involved in the process to find out the difficulties that influence the delay of the analysis of the SHPP. The results show that the main barriers are the non-application of the CONAMA resolution 279/2001 to the SHPP, undetermined inspection criteria, excess of environmental programs, technical incapacity, lack of financial resources, non-integration of the institutional organs, the building of SHPP in permanent preservation area, project interfering in the fish fauna, studies an environmental impact with then reports and public audiences. Finally, concludes that the difficulties are based on the non-integration of the institutions and also, being recent, on the inexperience of the actors involved. Therefore, the study suggests on increase of the technical body in the institutions and training of their analysts; hiring of specialized consultancy, implantation of an environmental integrated system, social communication program in the planning phase, fulfillment of the CONAMA resolution 279/2001; integration of public ministry representatives in the licensing organs; application of planning and zoning, deadlines and legal imposition of these deadlines in order to supply the

  8. Evaluation of standard and use tendency of image diagnosis exams in Brazil with emphasis in pediatric computerized tomography; Avaliacao do padrao e tendencia de uso de exames de diagnostico por imagem no Brasil com enfase em tomografia computadorizada pediatrica

    Energy Technology Data Exchange (ETDEWEB)

    Dovales, Ana Cristina Murta

    2016-07-01

    There is little information on developing countries about the use of diagnostic imaging procedures and the doses associated with radiological examinations. This study assessed the pattern and trend of diagnostic imaging usage in outpatients of the Brazilian Unified Health System (SUS) by modality and examined body part. Emphasis was given to computed tomography (CT) scans for which the analysis was extended to the private health care sector and included the evaluation of age at examination distribution, and dose estimation for children and young adults. Information on the use of diagnostic imaging procedures among SUS outpatients was obtained from the Outpatient Information System (SIA) of the Department of Information Technology of SUS (DATASUS). Data on the use of CT in the private health care sector were extracted from the Radiological Information Systems (RIS) of 25 private radiology services in 8 Brazilian cities. Effective doses and absorbed doses on organs of interest were estimated individually for 4,497 patients younger than 20 years of age using CT scan technical parameters and Monte Carlo simulations of radiation transport. Between 2002 and 2012 it was observed that conventional radiology was the most frequent modality of diagnostic imaging in SUS outpatients, but more sophisticated modalities, such as CT and magnetic resonance imaging, had the highest growth rates over the study period. The most frequent CT scan in SUS outpatients between 2001 and 2011 was the head/neck exam, but abdomen/pelvis examinations were the ones that grew the most. Patients up to 20 years of age made approximately 13% and 9% of the CT examinations between 2008 and 2014 in the public and private health care systems, respectively. About one-third of the private-sector patients had more than one CT scan in this period. There was great variation in doses, even for the same type of procedure in patients of the same age group. The highest mean effective dose was 13.5 mSv estimated

  9. Evaluation of effect of surface treatment on corrosion resistance of Nd-Fe-B magnets; Avaliacao do efeito de tratamentos superficiais na resistencia a corrosao de magnetos de Nd-Fe-B

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Emerson Alves

    2009-07-01

    Nd-Fe-B magnets produced by powder metallurgy are highly susceptible to corrosion due to their complex microstructure and intrinsic porosity due to their fabrication process. Moreover, these magnets have excellent magnetic properties and find many applications. In the nuclear area, permanent magnets based on rare earth transition-iron-boron (Ne-Fe-B) are used in the manufacture of magnetic media (magnetic levitation) for ultra-centrifuges used for isotopic enrichment of uranium employed in nuclear reactors. In dentistry these types of magnets are used to fix total and partial prostheses on implants; in orthodontics to correct dental malocclusion and make moves; in buco-maxillo-facial surgery for setting facial prostheses of large defects of the face. In electronic equipment, they are used in scales, locks, electric motors and particularly in the manufacturing of hard drives of computers. The objective of this study is to evaluate the corrosion resistance of the magnet tested and surface treatments that could replace chromating that generates toxic residues and present high cost of processing waste with treatments that are environmentally friendly. The evaluation of the corrosion resistance was carried out through the analysis potentiodynamic polarization curves, electrochemical impedance spectroscopy, monitoring of corrosion potential as a function of test time and scanning electron microscopy to try to correlate the magnet microstructure with its corrosion resistance. The results show that these magnets are highly susceptible to corrosion that occurs preferentially in the Nd-rich phase, located in the boundaries of the magnetic matrix phase ({psi}). Treatment with silane, cerium, sam, Cr 6{sup +}, tricationic phosphate followed by bath of chromium trioxide and in NaH{sup 2}PO{sup 4} solution for 24 hours followed by bath of zinc sulphate did not improve the corrosion resistance of the magnet. Among the treatments used, immersion in NaH{sup 2}PO{sup 4} solution for

  10. Inorganic composition determination and evaluation of the biological activity of Peperomia pellucida in the Aspergillus flavus growth; Estudo da composicao inorganica e avaliacao da atividade biologica de Peperomia pellucida no crescimento de Aspergillus flavus

    Energy Technology Data Exchange (ETDEWEB)

    Sussa, Fabio Vitorio

    2011-07-01

    In recent decades, there has been a great advancement in research in developing drugs from plants. Nevertheless, little significant care exists in the literature about the stable concentration of elements, as well as the activity concentration of '2{sup 38}U and {sup 232}Th decay products in plants used for this purpose in Brazil. The presence of stable elements and radionuclides in plants constitutes the pathway for their migration to humans, via uptake of tea or remedies made with medicinal herbs. Peperomia pellucida, whose popular name is 'erva de jabuti', is a plant known by its medicinal usages, such as healing and analgesic properties plus antibacterial and antifungal activities against food fungi. In this study, the elemental composition of Peperomia pellucida and surrounding soil samples collected in the Botanical Garden in Rio de Janeiro was determined; the elemental concentration in the alcoholic extract and infusion processes of dry plants was also determined. The elemental concentration of As, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn was determined in the leaves, aerial parts, including leaves, stems and roots of Peperomia pellucida, in their extracts obtained by maceration and infusions and in the surrounding soil by the Instrumental Neutron Activation Analysis (INAA). The analytical methodology used to determine the elements Cd, Hg and Pb was the Atomic Absorption Spectrometry (AAS); the activities of {sup 226}Ra, {sup 228}Ra and {sup 210}Pb were carried out by gross alpha and beta counting, after radiochemical separation. The quality of the obtained results was assured by the analyses of the certified reference materials IAEA-336 Lichen, IAEA-Soil-7, IAEA-326 Radionuclides in soil, NIST 1515 Apple Leaves and NIST 1542 Peach Leaves. The relative standard deviations and the relative errors obtained in these analyses indicated good precision and accuracy of the results. The essential

  11. Metal and trace element sediment assessment from Guarapiranga reservoir, Alto Tiete Basin, Sao Paulo, SP, Brazil; Avaliacao da concentracao de metais e elementos traco em amostras de sedimento do reservatorio Guarapiranga, Sao Paulo, SP, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, Guilherme Moura

    2011-07-01

    The Guarapiranga Reservoir, located in Sao Paulo metropolitan region, Brazil, is responsible for supplying about 20% of the entire population's water needs of this region or approximately 3.7 million people. However, this system has shown significant degradation in water quality, due to untreated domestic sewage and industrial effluents. In this study sediment samples were collected at five points along the reservoir and total concentration of some major (Fe, K and Na), trace (As, Ba, Br, Co, Cr, Cs, Hf, Hg, Rb, Sb, Sc, Ta, Tb, Th, U, V and Zn) and rare earth (Ce, Eu, La, Lu, Nd, Sm, Tb and Yb) elements were determined by instrumental neutron activation analysis (INAA). By inductively coupled plasma optical emission spectrometry (ICP OES) the concentrations of Al, Ba, Be, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Ni, Pb, Ti, V e Zn were determined after digestion procedure following US EPA 3051 methodology. The concentrations of metals Cd and Pb were determined by graphite furnace atomic absorption spectrometry (GFAAS) and total Hg by cold vapor atomic absorption spectrometry (CVAAS). Methodology validation according to precision and accuracy was performed by reference materials analyses for the three different analytical techniques used. Multielemental results obtained by INAA were compared to NASC (North American Shale Composite), Upper Continental Crust (UCC) and soil from Guarapiranga park values. The Enrichment Factor (EF) and Geo accumulation Index (Igeo) were also evaluated for these data. Metal concentration results by ICP OES and AAS in the samples were compared to the TEL and PEL oriented values established by the Canadian Council of Ministers of the Environment and also adopted by CETESB (Environmental Protection Agency of the Sao Paulo State). The results were also compared to regional reference values (VRR) of limnic sediments from the Alto Tiete Basin. From these data an assessment of metal and trace element accumulated in the sediments from the

  12. Evaluation of the radiologic potential due to the nuclear submarine visits to the Rio de Janeiro port; Avaliacao do impacto radiologico potencial relativo a visita de submarinos nucleares ao Porto do Rio de Janeiro

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Jose Francisco

    2004-07-01

    Brazil is signatory of international protocols related to the visit of nuclear-powered vessels, aircraft carriers and submarines to Brazilian ports. The submarines, during their stay in Brazilian ports, inform that there is no release of radioactive material to the environment. However, the possibility of occurrence of accidents with environmental releases from PWR reactors is real. Between 1993 and 2003, 13 nuclear submarines visited Brazilian ports. This work aimed to evaluate the potential impact due to the visits of nuclear-powered ships and submarines to the port of the city of Rio de Janeiro, in relation to releases of radioactive materials to the environment, considering both routine releases and accidental situations. The models selected to perform the assessments took into account the scenarios to be simulated. Simple, but conservative methodologies were used for the evaluation of routine releases. For accidental releases, the dynamics of the materials dispersion into the environment were considered. The present study was mainly focalized on the initial phase of an accident. The doses for the crew of the Brazilian navy ships, for IRD teams performing environmental monitoring, and for the population around the Guanabara Bay, close to the points of anchorage, were assessed. The results indicated that, in normal operational conditions, no significant radiological impact due to the visit of nuclear submarines to the port of the city of Rio de Janeiro is expected, even considering the occurrence of small routine radionuclide releases. The analysis of accidental releases, however, indicated that the submarines should be located at a minimum distance of 2,5 km from inhabited areas in the coast of the Guanabara Bay. The need for environmental control and training of the teams involved in the attendance of the submarines, during the period of their visit, was also considered. The need for revising the procedures for the preoperational surveys to be performed at the

  13. Intrapulpal temperature during preparation with the Er:YAG laser: an in vitro study; Avaliacao da temperatura intrapulpar de incisivos bovinos irradiados com o laser de Er:YAG

    Energy Technology Data Exchange (ETDEWEB)

    Geraldo-Martins, Vinicius Rangel

    2003-07-01

    This study evaluated the variation of the pulp chamber temperature when dentine, with 2,0 mm of thickness, adjacent to the pulp, was irradiated by the Er:YAG laser. Seventy two bovine incisors were used, that had the enamel and dentine of the buccal surface weared until to reach the thickness used in this study. The teeth were divided in 3 groups, according with the repetition rate used ( Group I = 2 Hz; Group II = 4 Hz and Group III = 6 Hz), and irradiated, with or without water cooling, using 250, 300 and 350 mJ of energy per pulse. Thermocouples were introduced inside the pulp chamber through the palatine opening of the samples and fixed to the vestibular wall of the pulp chamber using a thermal paste. After the statistical analysis, it was verified that there was a decrease of the intrapulpal temperature for all of the parameters in the group I irradiated with water cooling. In the same group, but without cooling, occurred increases of the intrapulpal temperature, however they were less than 2 deg C. In the group 11, only the para meter 350 mJ/4 Hz/ with water cooling presented decrease of the temperature (-0,08 deg C). The other irradiations presented increase of the intrapulpal temperature, varying from 1,5 to 1,9 deg C for irradiations without cooling and of 0,03 the 0,58 deg C for the samples irradiated under water cooling. In the group III, all of the samples presented increase of the intrapulpal temperature, however, they were smaller than to 2,5 deg C. The conditions of this study allow to conclude that the use of the laser of Er:YAG promoted acceptable temperature increases inside the pulp chamber, not reaching the critical level of 5,5 deg C. However, in spite of the temperature variations inside the pulp chamber have not reached critical levels, this procedure should not be recommended because macroscopic observations of the dentine irradiated without water cooling showed dark lesions, suggesting carbonization of this tissue. (author)

  14. Metal and trace element sediment assessment from Guarapiranga reservoir, Alto Tiete Basin, Sao Paulo, SP, Brazil; Avaliacao da concentracao de metais e elementos traco em amostras de sedimento do reservatorio Guarapiranga, Sao Paulo, SP, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, Guilherme Moura

    2011-07-01

    The Guarapiranga Reservoir, located in Sao Paulo metropolitan region, Brazil, is responsible for supplying about 20% of the entire population's water needs of this region or approximately 3.7 million people. However, this system has shown significant degradation in water quality, due to untreated domestic sewage and industrial effluents. In this study sediment samples were collected at five points along the reservoir and total concentration of some major (Fe, K and Na), trace (As, Ba, Br, Co, Cr, Cs, Hf, Hg, Rb, Sb, Sc, Ta, Tb, Th, U, V and Zn) and rare earth (Ce, Eu, La, Lu, Nd, Sm, Tb and Yb) elements were determined by instrumental neutron activation analysis (INAA). By inductively coupled plasma optical emission spectrometry (ICP OES) the concentrations of Al, Ba, Be, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Ni, Pb, Ti, V e Zn were determined after digestion procedure following US EPA 3051 methodology. The concentrations of metals Cd and Pb were determined by graphite furnace atomic absorption spectrometry (GFAAS) and total Hg by cold vapor atomic absorption spectrometry (CVAAS). Methodology validation according to precision and accuracy was performed by reference materials analyses for the three different analytical techniques used. Multielemental results obtained by INAA were compared to NASC (North American Shale Composite), Upper Continental Crust (UCC) and soil from Guarapiranga park values. The Enrichment Factor (EF) and Geo accumulation Index (Igeo) were also evaluated for these data. Metal concentration results by ICP OES and AAS in the samples were compared to the TEL and PEL oriented values established by the Canadian Council of Ministers of the Environment and also adopted by CETESB (Environmental Protection Agency of the Sao Paulo State). The results were also compared to regional reference values (VRR) of limnic sediments from the Alto Tiete Basin. From these data an assessment of metal and trace element accumulated in the sediments from the

  15. Assessment of atmospheric metallic pollution in the metropolitan region of Sao Paulo, Brazil, employing Tillandsia usneoides L. as biomonitor; Avaliacao da poluicao atmosferica por metais na regiao metropolitana de Sao Paulo, Brasil, utilizando a bromelia Tillandsia usneoides L. como biomonitor

    Energy Technology Data Exchange (ETDEWEB)

    Nogueira, Claudio Ailton

    2006-07-01

    Tillandsia usneoides L. is an epiphytic bromeliad that lives on trees or other kinds of inert substrates, absorbing water and nutrients directly from the environment without roots. Due to its morphological and physiological characteristics, this species accumulates the pollutants present in the atmosphere. In the present work, Tillandsia usneoides was used as a bio monitor of metal atmospheric pollution in Sao Paulo, Brazil, which is the biggest city in South America with a population of 18 million inhabitants and a strong industrial activity. The urban area is polluted by industrial emissions but, according to the Environmental Protection Agency of the State of Sao Paulo (CETESB), the governmental agency of air quality control, regularly occurring emissions from about 7.8 million motor vehicles provide the principal source of air pollution. The Tillandsia samples were collected from an unpolluted area and were exposed bimonthly in 10 sites of the city with different pollution levels and in a control site. After exposure, trace metals were analyzed in the plant by instrumental neutron activation analysis and ICP-MS (Pb, Cd, Co, Cu, Ni, Sb e V). The results of the investigation showed a notable concentration of Co and Ni in the plants exposed in an industrial area where there is a metal processing plant, which produces about 600 tons/year of Co and 16,000 tons/year of Ni. Copper and chromium were equally distributed in industrial regions and in sites near heavy traffic avenues, suggesting that these elements can be associated to both vehicular and industrial sources. A high accumulation of Cd in the plant exposed in industrial areas indicates industrial activities as the main source of this element. For Pb, no evident sources could be identified so far as it was spread evenly along the monitoring sites. Traffic-related elements such as Zn, Ba and Sb presented high concentrations in plants exposed in sites near to heavy traffic avenues (cars, buses and trucks) and

  16. Raw material and energetic matrix: a synthetic, generic and attention considerations for the future of the Camacari Industrial pole, Bahia, Brazil; Materias-prima e matriz energetica: uma visao sintetica, generica e de atencao para o futuro do Polo Industrial de Camacari

    Energy Technology Data Exchange (ETDEWEB)

    Lins Neto, Joao Bispo [Braskem S.A., Camacari, BA (Brazil). Gerencia de Energia], e-mail: joao.lins@braskem.com.br; Lima, Alberto Ferreira [Bahia Pulp, Camacari, BA (Brazil). Gerencia de Qualidade e Desenvolvimento de Produto], e-mail: alberto_lima@bahiapulp.com; Petti, Ana Carla [Braskem S.A., Camacari, BA (Brazil). Gerencia de Gestao e Regulacao de Energia], e-mail: ana.petti@braskem.com.br; Correia, Antonia Lucia Santiago [PETROBRAS S.A., Norte/Nordeste (Brazil)

    2008-01-15

    This paper makes a synthetic evaluation of the present and raw material situation and the energetic matrix, and future perspectives, focusing on the following aspects: analysis of the existent production chains; threats to the raw material and incomes; integration between the enterprises and opportunities for new business, and availability and competitiveness of the energetic matrix.

  17. Assessment of ionizing radiation as a risk factor for breast cancer incidence in Goiania; Avaliacao da radiacao ionizante como fator de risco para a incidencia de cancer de mama em Goiania

    Energy Technology Data Exchange (ETDEWEB)

    Lage, Leonardo Bastos

    2016-11-01

    This research aims to evaluate whether exposure to ionizing radiation to which women are subjected can be associated with the incidence of breast cancer in Goiania. The defined study area is the central region of Goiania, or the Sanitary Districts of Campinas-Centro and Sul, in which are the seven major accident sources of contamination with Cesium 137, and also, as shown by previous study, the majority of new cases of breast cancer (60,43 %). We used the geographical division of the city in census tracts and health districts. The data collection was divided in two stages: the first, for the survey of radiometric measurements, and the second, for identifying the addresses of women diagnosed with breast cancer. The radiometric survey occurred between 2010 and 2014, in which was used an environmental gamma radiation mobile measuring system. This system was composed by a high-sensitivity detector coupled to a Global Positioning System (GPS) and a microcomputer. The assembly was installed on a motor vehicle so that the height of the detector is found at one meter from the ground, and programmed to obtain a measurement of the doses absorbed in the air rate each second. The data collected were: doses absorbed in the air rate, geographical coordinates, altitude, date and time of acquisition. From Mobisys software, files were generated and from ArcGIS 10.0 platform, geospatial assessment survey through the elaboration of thematic maps and geospatial analysis statistics. The annual averages of effective doses and collective effective doses were estimated from the rate of doses absorbed in air collected by the system and the resident population in the census tracts. The second stage begun from the data collection at the Registry of Goiania's Population Based Cancer (RCBPGO), in which were identified addresses of women diagnosed with breast cancer between 2001 and 2010. Part of the data was geographically referenced and using census data were estimated and compared the

  18. Evaluation of anti-peptidoglycan aptamers labeled with Technetium-99m for in vivo bacterial infection identification; Avaliacao de aptameros anti-peptidoglicano marcados com Tecnecio-99m para identificacao in vivo de infecoes bacterianas

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Ieda Mendes

    2017-07-01

    .52 ± 0.05. The scintigraphic images for all groups showed a high uptake in the kidneys and bladder indicating the urinary tract as the main elimination route and the images corroborated the biodistribution results. In mice infected with S. aureus that received the {sup 99m}Tc-Antibac1 the target/non-target ratios determined by ROI analysis were 4.7 ± 0.9 at 1 h and 30 min and 4.6 ± 1.1 at 3 h, demonstrating the high uptake of {sup 99m}Tc-Antibac1 at the site of infection. Statistically lower values were found for animals infected with S. aureus that received the {sup 99m}Tc-library: 1.55 ± 0.36 at 1 h and 30 min and of 1.67 ± 0.43 at 3 h. In the group infected with C. albicans the target/non-target ratios for {sup 99m}Tc-Antibac1 were 2.0 ± 0.3 at 1 h and 30 min and 2.0 ± 0.6 at 3 h, and for the {sup 99m}Tc-library of 2.14 ± 0.29 at 1 h and 30 min and 1.88 ± 0.62 at 3 h, without statistical difference. In the group of animals infected with S. aureus that received the {sup 99m}Tc-Antibac2 the target/non-target ratios determined by ROI were of 3.5 ± 0.7 at 1 and 30 min and of 3.7 ± 1.5 at 3 h, which are statistically higher than those of {sup 99m}Tc-library. In the group infected with C. albicans, these ratios for {sup 99m}Tc-Antibac2 were of 2.5 ± 0.2 at 1 h and 30 min and of 1.9 ± 0.5 at 3 h, without statistical difference compared to the {sup 99m}Tc-library. The results demonstrated that both aptamers were effective to identify bacterial infection foci but only the {sup 99m}Tc-Antibac1 was able to distinguish a bacterial infection focus from a fungal one. (author)

  19. Technical evaluation of thermodynamics processes; Avaliacao tecnica dos processos termodinamicos

    Energy Technology Data Exchange (ETDEWEB)

    Petracco, Fulvio Celso

    1986-05-01

    An evaluation of thermodynamic processes, energy losses the origin of energy losses on thermodynamic process, where are the points or sources of those losses and variation of process when compared in relation of thermodynamic performance are discussed. The concept of energy losses and its origin, energy and work capacity, performance rates and examples of thermodynamic efficiency are also debated 3 figs.

  20. Radiologic evaluation of facial injury; Avaliacao radiologica dos traumatismos faciais

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Ricardo Pires de; Volpato, Richard [Complexo Hospitalar Heliopolis, Sao Paulo, SP (Brazil). Servico de Diagnostico por Imagem]. E-mail: richard_volpato@uol.com.br; Nascimento, Lia Paula [Complexo Hospitalar Heliopolis, Sao Paulo, SP (Brazil)

    2003-03-01

    A detailed radiological investigation of the maxillofacial injuries is essential to achieve good treatment results. The images should identify every lesion and guide the treatment, thus improving esthetic and functional results. With the aim of simplifying the diagnostic task, the face may be seen as a five regions structure that may suffer a regional fracture or combined fractures involving the adjacent regions. These regions represent areas of focus for pre surgical planning and are as follows: nasal, orbital, zygomatic, maxillary, and mandibular. In order to understand the injury mechanisms and their consequences it is useful to know the supporting buttresses, which are divided in five sagittal planes, three horizontal planes and two coronal planes. We reviewed the cases of patients with facial trauma treated at Complexo Hospitalar Heliopolis, Sao Paulo, Brazil. A review of the relevant issues concerning radiological investigation of these injuries is presented. This study allowed standardization and ordering of the radiological investigation in patients with facial trauma. (author)

  1. Calcaneal tendon: imaging findings; Tendao calcaneo: avaliacao por imagem

    Energy Technology Data Exchange (ETDEWEB)

    Montandon, Cristiano; Fonseca, Cristiano Rezio; Montandon Junior, Marcelo Eustaquio [Colegio Brasileiro de Radiologia e Diagnostico por Imagem, Sao Paulo, SP (Brazil)]. E-mail: crismontandon@hotmail.com; Lobo, Leonardo Valadares; Ribeiro, Flavia Aparecida de Souza; Teixeira, Kim-Ir-Sen Santos [Goias Univ., Goiania, GO (Brazil). Hospital de Clinicas. Dept. de Diagnostico por Imagem e Anatomia Patologica

    2003-12-01

    We reviewed the radiological and clinical features of 23 patients with calcaneal tendon diseases, who were submitted to ultrasound or magnetic resonance imaging. The objective of this study was to characterize the lesions for a precise diagnosis of calcaneal tendon injuries. A wide range of calcaneal tendon diseases include degenerative lesions, inflammation of the peritendinous tissue such as peritendinitis and bursitis, and rupture. Imaging methods are essential in the diagnosis, treatment and follow-up of calcaneal tendon diseases. (author)

  2. Seismic evaluation of nuclear installations; Avaliacao sismica de instalacoes nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Mattar Neto, Miguel [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)

    1997-10-01

    Some considerations regarding extreme external events, natural or man-induce, such as earthquakes, floods, air crashes, etc, shall be done for nuclear facilities to minimizing the potential impact of the installation on the public and the environment. In this paper the main aspects of the seismic evaluation of nuclear facilities (except the nuclear power reactors) will be presented based on different codes and standards. (author). 7 refs., 2 tabs.

  3. An assessment of ninth round; Nona: uma avaliacao da rodada

    Energy Technology Data Exchange (ETDEWEB)

    Assumpcao, Eduardo; Andrade, Leila; Fontana, Raphaela [Agencia Nacional do Petroleo, Gas Natural e Biocombustiveis (ANP), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Accomplished on November, 27{sup th}, 2007, 271 exploratory blocks were offered in Round 9, distributed within 14 sectors, totalling an area of 73 thousand km{sup 2}. The following basins were included: Campos, Espirito Santo, Para- Maranhao, Parnaiba, Pernambuco-Paraiba, Potiguar, Santos, Reconcavo and Rio do Peixe. From the original lot of 67 companies qualified (31 Brazilian and 36 of foreign origin), 42 offered bids individually or in partnerships. 117 blocks were allocated to 24 winning operator companies. Other 12 enterprises won acreage as non-operator participants of joint bids. A record of R$ 2,1 billion were offered as signature bonuses along with 169.436 units of the so called minimum exploratory programs. These units may be converted to an estimated R$ 1,4 billion. The objective of this paper is to evaluate the results obtained in Round 9, analyzing collected data through three different perspectives of aggregate results: bidding companies, offered areas and exploratory models. (author)

  4. Heuristicas para avaliacao de interfaces de portais universitarios

    NARCIS (Netherlands)

    Pelogi, A.P.S.; van Amstel, Frederick; Barsottini, C.G.N.

    2012-01-01

    The Heuristic Evaluation method seems to be efficient to diagnose interface usability problems. The propose at this study is to determine whether specific heuristics for university portals are appropriate and contribute to a more specific evaluation of interface usability of the portal of the

  5. Avaliacao de projeto de promocao da saude para adolescentes

    Directory of Open Access Journals (Sweden)

    Jovino Oliveira Ferreira

    2013-06-01

    Full Text Available OBJETIVO: Avaliar programa de promoção de atividade física e de escolhas alimentares entre adolescentes. MÉTODOS: Estudo transversal realizado com 911 adolescentes de 13 a 18 anos de idade, de escolas públicas de Goiânia, GO, em 2010. Os participantes foram divididos em dois grupos: intervenção (escolas participantes do Projeto Viver Saudável e controle. Foram considerados como atividade física: deslocamento, aulas de educação física na escola, atividade física fora da escola e no lazer. Foram definidos como ativos aqueles que acumularam 300 ou mais minutos por semana. Quanto às escolhas alimentares, foi classificado como adequado o consumo de alimentos protetores em cinco ou mais dias da semana. Foram realizadas análises estatísticas com teste de Qui-quadrado de Pearson. RESULTADOS: A maioria dos adolescentes foi identificada como inativos ou insuficientemente ativos, com 65,7% no grupo intervenção e 65,2% no grupo controle, sem diferenças significativas entre os grupos e com prevalência maior entre o sexo feminino. Pouco mais da metade dos adolescentes consumiam alimentos protetores da saúde em cinco ou mais dias da semana, sendo 56,6% e 50,4%, respectivamente, nos grupos intervenção e controle (p = 0,373. CONCLUSÕES: A ausência de diferenças quanto a escolhas alimentares e prática de atividade física entre os grupos intervenção e controle indica que o projeto Viver Saudável precisa ser reavaliado visando melhorar a efetividade no cumprimento dos seus objetivos.

  6. Reflections about the Brazilian energy policy from a project of DSM (Demand Side Management) in low-income social strata in the Manaus city, AM, Brazil; Reflexoes sobre a politica energetica brasileira a partir de um projeto de GLD (Gerenciamento pelo Lado da Demanda) em extrato social de baixa renda na cidade de Manaus, AM

    Energy Technology Data Exchange (ETDEWEB)

    Valois, Ilsa; Cartaxo, Elizabeth [Universidade Federal do Amazonas (UFAM), Manaus, AM (Brazil). Fac. de Tecnologia. Nucleo Interdisciplinar de Energia, Meio Ambiente e Agua

    2008-07-01

    Considering the peculiarities of the different Brazilian regions, this article reports a survey developed in the city of Manaus - AM and makes a political analysis about the electric energy and environmental impacts arising. The main objective is to discuss the importance of rational energy consumption in a region where they add, the problems on the depletion of energy resources, the climatic difficulties, geographical and economic interests inherent in the capitalist system. Within this reality this article discuss aspects of a study by the Amazon Federal University, in the context of a project on energy efficiency. The project swapped 66 inefficient air conditioners for equipment with the stamp PROCEL energy efficiency in seven public schools in the Manaus city. Alongside the exchange program, an educational program selected 111 students whose homes were also monitored through the history of consumption during the life of the project. The result s of monitoring was demonstrated an economy of substantial energy (31%) whereas, in homes, there was no exchange of air conditioners. Should be the positive results only to a new position with respect to the final use of electric energy. It was found that the user's public school belongs to the group of low -income consumers and small the opportunity to reduce their consumption. Consequently, the results point to the inefficient application of resources that limit the possibilities for projects with greater economic and social return. (author)

  7. Reflections about the Brazilian energy policy from a project of DSM (Demand Side Management) in low-income social strata in the Manaus city, AM, Brazil; Reflexoes sobre a politica energetica brasileira a partir de um projeto de GLD (Gerenciamento pelo Lado da Demanda) em extrato social de baixa renda na cidade de Manaus, AM

    Energy Technology Data Exchange (ETDEWEB)

    Valois, Ilsa; Cartaxo, Elizabeth [Universidade Federal do Amazonas (UFAM), Manaus, AM (Brazil). Fac. de Tecnologia. Nucleo Interdisciplinar de Energia, Meio Ambiente e Agua

    2008-07-01

    Considering the peculiarities of the different Brazilian regions, this article reports a survey developed in the city of Manaus - AM and makes a political analysis about the electric energy and environmental impacts arising. The main objective is to discuss the importance of rational energy consumption in a region where they add, the problems on the depletion of energy resources, the climatic difficulties, geographical and economic interests inherent in the capitalist system. Within this reality this article discuss aspects of a study by the Amazon Federal University, in the context of a project on energy efficiency. The project swapped 66 inefficient air conditioners for equipment with the stamp PROCEL energy efficiency in seven public schools in the Manaus city. Alongside the exchange program, an educational program selected 111 students whose homes were also monitored through the history of consumption during the life of the project. The result s of monitoring was demonstrated an economy of substantial energy (31%) whereas, in homes, there was no exchange of air conditioners. Should be the positive results only to a new position with respect to the final use of electric energy. It was found that the user's public school belongs to the group of low -income consumers and small the opportunity to reduce their consumption. Consequently, the results point to the inefficient application of resources that limit the possibilities for projects with greater economic and social return. (author)

  8. Electricity to natural gas competition under customer-side technological change: a marginal cost pricing analysis; Cambiamento tecnologico a valle del contatore e concorrenza fra elettricita' e gas naturale

    Energy Technology Data Exchange (ETDEWEB)

    Gulli' , Francesco [Bocconi Univ., Milan (Italy). Iefe

    2004-07-01

    This paper aims at evaluating the impact of technological change (on the customer side of the meter) on the network energy industry (electricity and natural gas). The performances of the small gas fired power technologies and the electrical reversible heat pumps have improved remarkably over the last ten years, making possible (or more viable) two opposite technological trajectories: the fully gas-based system, based on the use of small CHP (combined heat and power generation) plants, which would involve a wide decentralisation of energy supply; the fully electric-based system, based on the use of reversible electric heat pumps, which would imply increasing centralisation of energy supply. The analysis described in this paper attempts to evaluate how these two kinds of technological solutions can impact on inter-service competition when input prices are ste equals to marginal costs of supply in each stage of the electricity and natural gas industries. For this purpose, unbundled prices over time and over space are simulated. In particular the paper shows that unbundling prices over space in not very important in affecting electricity to natural gas competition and that, when prices are set equal to long-run marginal costs, the fully electric-based solution (the reversible heat pump) is by far preferable to the fully gas-based solution (the CHP gas fired small power plant). In consequence, the first best outcome of the technological change would involve increasing large power generation and imported (from the utility grid) electricity consumption. Given this framework, we have to ask ourselves why operators, regulators and legislators are so optimistic about the development of the fully gas-based solutions. In this respect, the paper suggests that market distortions (such as market power, energy taxation and inefficient pricing regulation) might have give an ambiguous representation of the optimal technological trajectory, inducing to overestimate the social value

  9. Energy consumption and the use of thermal insulating materials. A comparative analysis on the tendencies over the time; Consumo de energia y uso de aislamientos termicos - un analisis comparativo de tendencias en el tiempo

    Energy Technology Data Exchange (ETDEWEB)

    Ordonez C, Luis Felipe [Aislantes Minerales, S. A. de C. V. Mexico, D. F. (Mexico)

    1994-12-31

    Through the observations and comparisons conducted on the behavior of change tendencies of population growth, Gross Internal Product and energy consumption, one can analyze if the energy saving tendencies in Mexico are positive and similar to the tendencies in the consumption of thermal insulating materials and similar to other countries figures. The analysis of these figures allows US to detect if the energy saving efforts can be correlated with the consumption of thermal insulating materials and with the standard of living of a country (determined by its per capita income) and establish a future performance index of energy conservation for the adequate utilization o insulating materials of economical thickness. The index proposed in this paper serves this purpose and yields interesting results. Along recent years and as a result of the industrialization level and way of living in Mexico, the energy consumption has increased in a higher rate than the population growth, based on 1980 figures. In this same period, the gross internal product per capita has also increased in a slightly lower rate to the population growth. This means that the figure for Energy Intensity, defined as the rate of energy consumption over the gross internal product, has slightly increased in the same period accounted for, meaning that the country has become more inefficient in recent years. At the same time, the production capacity of thermal insulating materials has remained constant since 1980 until early 1994. This compares unfavorably with all the developed countries, in which the energy intensity has diminished considerably in the last years, while the thermal insulating materials rate has augmented at a rhythm of similar proportions. [Espanol] A base de realizar observaciones y comparaciones del comportamiento de las tendencias de cambio en crecimiento poblacional, Producto Interno Bruto y consumo de energia, se puede analizar si las tendencias de ahorro de energia en Mexico son

  10. Neutronic characterization of cylindrical core of minor excess reactivity in the nuclear reactor IPEN/MB-01 from the measure of spatial and energetic distribution of neutron flux distribution; Caracterizacao do nucleo cilindrico de menor excesso de reatividade do reator IPEN/MB-01, pela medida da distribuicao espacial e energetica do fluxo de neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Aredes, Vitor Ottoni Garcia

    2014-07-01

    In this work was conducted the mapping of the thermal and epithermal neutrons flux and the energy spectrum of the neutrons in the reactor core IPEN/MB-01 for a cylindrical core configuration with minor excess reactivity, which is 28 x 28 fuel rods arranged in north-south and east-west directions. The calibration of control rods for this configuration determined their excess reactivity. The lower excess reactivity in the core decreased neutron flux disturbance caused by the neutron absorbing rods , given that the nuclear reactor was operated with the rods almost completely removed . Was used the 'Activation Analysis Technique' with the thin foil activation detectors ( infinitely diluted and hyper-pure), of different materials that work in different energy ranges, to calculate the saturation activity, used for determining the neutron flux and in the SANDBP code as input for the calculation of the neutrons energy spectrum. To discriminate thermal and epithermal flux , was used the 'Cadmium RatioTechnique' . The activation detectors were distributed in a total of 140 radial and axial positions in the reactor core and 16 irradiation, with bare and covered with cadmium activation foils. A model of this configuration was simulated by MCNP-5 code to determine the cadmium correction factor and comparison of the results obtained experimentally. The cylindrical configuration desired, with 17% less fuel than the standard rectangular configuration (28 x 26 fuel rods), reached criticality with the control rods approximately 90% removed, which decreased considerably the disturbance in neutron flux. Given the highest power density of the 28 x 28 cylindrical core, the neutron flux increased by over 50% in the central regions of the core compared to the values of the 28 x 26 standard rectangular core. (author)

  11. Energy recovery of the H{sub 2}S and CO{sub 2} elimination with technology by hybrid plasma; Recuperacion energetica de la eliminacion de H{sub 2}S y CO{sub 2} con tecnologia por plasma hibrido

    Energy Technology Data Exchange (ETDEWEB)

    Salazar T, J. A.

    2014-07-01

    This document is a research focused on energy recovery from acid gas removal contained in natural gas as hydrogen sulfide (H{sub 2}S) and carbon dioxide (CO{sub 2}), by obtaining highly energetic gas such as syngas (mixture of hydrogen and carbon monoxide, in particular) using plasma technology in its hybrid form, namely, gliding arc plasma, that has the property to behave like a thermal plasma and cold plasma, besides possessing among other virtues the ability to treat large flows continuously at atmospheric pressure without the need of using noble gases, with a power consumption of no more than 1000 W. Furthermore, this type of plasma has demonstrated to be a clean and efficient not only by high conversion rates of H{sub 2}S (86%) and CO{sub 2} (56%) and high percentages of selectivity in the production of hydrogen (H{sub 2}) and carbon monoxide carbon (CO) obtained in this work, but because it can even be seriously considered to replace other technologies currently used in the process of sweetening natural gas as adsorption, absorption and sequestering membranes. The results shown are based on a series of analysis, simulations, experiments and calculations, from the design of the plasma generating source based on an impulse-phase circuit, to the electrical characterization results and simulation by acquiring electrical signals, without forgetting the characterization of the resulting chemical components using various analytical techniques such as mass spectrometry, gas chromatography (GC), optical emission spectroscopy (OES), optical spectroscopy Fourier inverse transformed (XRD) and scanning electron microscopy (Sem), X-ray diffraction (XRD) and multi-gas detectors (iBrid MX6). Additionally, performed chemical kinetics and reaction mechanism of the compounds involved in the degradation of H{sub 2}S and CO{sub 2} similar to those experienced as well as the study of energy efficiency (Ece), specific energy (Se), all this to meet a projects needs 127499, entitled

  12. Historical-statistical analysis of energy consumption in energy management; Analisis historico-estadistico del consumo energetico en la administracion de energia

    Energy Technology Data Exchange (ETDEWEB)

    Guizar Bejarano, Ruben [IMENOR (Mexico); Oven, Mark [RCG/Hagler, Bailly, Inc., Washington (United States)

    1993-12-31

    Traditionally the specific consumption of energy has been considered as the most adequate index to evaluate the efficiencies in the productive processes. Nevertheless, this index, in some instances is highly susceptible to suffer significant variations, due to factors such as equipment condition, raw materials quality, operational parameters, climate and production level. This last one definitely is the most important and requires a deeper analysis. In this presentation a methodology is developed to analyze the energy consumption as well as their specific energy consumption with respect to production. Enough historical data are utilized to allow for a statistical analysis. This study is of equal usefulness in an energy diagnosis, as in a management program of energy saving. In presenting the possibility of identifying potential energy saving, stands out the advantages of the analysis and the conclusions that can be derived from it. Through the actual data collected in several industries during the energy diagnosis, various possible results of the analysis are presented. Finally, how this type of analysis can be adapted to a more precise control of the energy consumption is described and be used as a base for establishing goals in energy efficiency in the long term. [Espanol] Tradicionalmente se ha considerado al consumo especifico de energia como el indice energetico mas adecuado para evaluar las eficiencias de los procesos productivos. Sin embargo, este indice es en ocasiones altamente susceptible a sufrir variaciones importantes, debido a factores como el estado de los equipos, la calidad de la materia prima, los parametros operativos, el clima, y el nivel de produccion. Este ultimo es decididamente el mas importante, y requiere un analisis mas profundo. En esta presentacion se desarrolla una metodologia para analizar tanto consumos de energia como consumos especificos de energia con respecto a la produccion. Se utilizan suficientes datos historicos para permitir

  13. Historical-statistical analysis of energy consumption in energy management; Analisis historico-estadistico del consumo energetico en la administracion de energia

    Energy Technology Data Exchange (ETDEWEB)

    Guizar Bejarano, Ruben [IMENOR (Mexico); Oven, Mark [RCG/Hagler, Bailly, Inc., Washington (United States)

    1992-12-31

    Traditionally the specific consumption of energy has been considered as the most adequate index to evaluate the efficiencies in the productive processes. Nevertheless, this index, in some instances is highly susceptible to suffer significant variations, due to factors such as equipment condition, raw materials quality, operational parameters, climate and production level. This last one definitely is the most important and requires a deeper analysis. In this presentation a methodology is developed to analyze the energy consumption as well as their specific energy consumption with respect to production. Enough historical data are utilized to allow for a statistical analysis. This study is of equal usefulness in an energy diagnosis, as in a management program of energy saving. In presenting the possibility of identifying potential energy saving, stands out the advantages of the analysis and the conclusions that can be derived from it. Through the actual data collected in several industries during the energy diagnosis, various possible results of the analysis are presented. Finally, how this type of analysis can be adapted to a more precise control of the energy consumption is described and be used as a base for establishing goals in energy efficiency in the long term. [Espanol] Tradicionalmente se ha considerado al consumo especifico de energia como el indice energetico mas adecuado para evaluar las eficiencias de los procesos productivos. Sin embargo, este indice es en ocasiones altamente susceptible a sufrir variaciones importantes, debido a factores como el estado de los equipos, la calidad de la materia prima, los parametros operativos, el clima, y el nivel de produccion. Este ultimo es decididamente el mas importante, y requiere un analisis mas profundo. En esta presentacion se desarrolla una metodologia para analizar tanto consumos de energia como consumos especificos de energia con respecto a la produccion. Se utilizan suficientes datos historicos para permitir

  14. Nuclear energy I, Non-energetic applications; Energia Nuclear I, Aplicaciones no energeticas

    Energy Technology Data Exchange (ETDEWEB)

    Lartigue G, J; Navarrete T, M; Cabrera M, L; Arandia, P A; Arriola S, H [Facultad de Quimica, 04510 Mexico D.F. (Mexico)

    1986-07-01

    The nuclear energy is defined as the energy produced or absorbed in the nuclear reactions, therefore, these are divided in endothermic and exothermic. The exothermic nuclear reactions present more interest from the point of view of its applications and they can show in four main forms: radioactivity (from 0 to 4 MeV/reaction; light nucleus fusion ( {approx} 20 MeV/reaction), heavy nucleus fusion ({approx} 200 MeV/reaction) and nucleons annihilation ( {approx} 2000 MeV/reaction). Nowadays only the fission has reached the stage of profitable energetic application, finding the other three forms in research and development. The non-energetic applications of the nuclear energy are characterized by they do not require of prior conversion to another form of energy and they are made through the use of radioisotopes as well as through the use of endothermic reaction caused in particle accelerators. In this work are presented some of the non-energetic applications with its theoretical and experimental basis as well as its benefits of each one. (Author)

  15. Generating power stations and optimization energetic of processes; Centrales generadoras y optimacion energetica de procesos

    Energy Technology Data Exchange (ETDEWEB)

    Gutierrez Ramirez, Ranulfo; Fernandez Montiel, Manuel Francisco [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    1999-07-01

    Some recent experiences of the Management of Thermal Processes of the Instituto de Investigaciones Electricas (IIE) related to the works on generating power stations of electricity, plants of cogeneration and energy saving are presented. [Spanish] Se presentan algunas experiencias recientes de la Gerencia de Procesos Termicos del Instituto de Investigaciones Electricas (IIE) relacionadas con los trabajos sobre centrales generadoras de electricidad, plantas de cogeneracion y ahorro de energia.

  16. Renewable energies in the national power supply; Energias renovables en la oferta energetica nacional

    Energy Technology Data Exchange (ETDEWEB)

    Huacuz Villamar, Jorge M [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    1999-07-01

    Mexico is a country endowed with abundant power resources. By the magnitude of its reserves and the installed production capacity. This article presents the different nonconventional energy resources which Mexico has, with the purpose of using them for the generation of electric energy. [Spanish] Mexico es un pais dotado de abundantes recursos energeticos. Por la magnitud de sus reservas y por la capacidad instalada de produccion. Este articulo presenta los diferentes recursos energeticos no convencionales con los que cuenta Mexico, con el fin de utilizarlos para la generacion de energia electrica.

  17. Procedure for the energy evaluation of electric motors; Procedimiento para la evaluacion energetica de motores electricos

    Energy Technology Data Exchange (ETDEWEB)

    Feliz Quiroz, Marco Antonio [Universidad Autonoma Metropolitana (Mexico)

    2002-06-01

    The present article is not a complete treaty about motors, here it is simply tried to show a practical procedure to evaluate electric motors, in order to determine the economics of their possible replacement by others of high efficiency. With the former in mind, the included database is sustained in the information of a representative number of motors brands commercialized in Mexico, since to include all the brands sold in our country would not be practical and it would be outside the scope of this publication. [Spanish] El presente articulo no es todo un tratado acerca de motores, sencillamente aqui se pretende mostrar un procedimiento practico para evaluar los motores electricos, a fin de determinar la rentabilidad de su eventual reemplazo por otros de alta eficiencia. Por lo anterior, la base de datos incluida se sustente en la informacion de un numero representativo de marcas de motores comercializados en Mexico, ya que abarcar todas las marcas vendidas en nuestro pais no seria practico y quedaria fuera del alcance de esta publicacion.

  18. Demand-side bidding in Brazil; Leilao de eficiencia energetica no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, Agenor Gomes Pinto

    2008-01-15

    Since the New Electric Sector Model's conception an energy-efficiency auction, like the ones used to buy new energy, was considered. Recently, the subject has been frequently commented in studies and meetings. This thesis discuss the main issues about its implementation in Brazil and proposes a model for this. The first chapter shows the history and the Electric Sector actual frame, with emphasis in the energy planning, resumed after the 2001 electricity shortage, the structure created for the system expansion and analyses the results of the new energy's auctions until now. The second chapter studies how the energy-efficiency auction can affect agents and consumers and presents the auction theory, which is growing fast in recent years, and how it can be applied to the present case, showing the possible agents' behavior - ESCOs, larger consumers and appliance manufacturers, and its implication on the auction shape. The third chapter shows the past world experience in energy-efficiency selling - the USA DSB (demand-side bidding) and its actual results and an IEA (International Energy Agency) study about this market mechanism of energy-efficiency promotion. 'The DSB works but it's not simple' (Geller, 2006) sums up the main conclusion about DSB - it develops the M and V techniques and the ESCO industry, making energy-efficiency as good as new generation for system's growing. The fourth chapter presents a proposal for the energy-efficiency auction's implementation in Brazil - its opportunity, resources source, regional aspects and the steps to get there. The fifth chapter analyses the M and V 's techniques and shows examples of the four options for projects - the M and V is essential for the auction success and its development, on the other hand, can leverage the energy-efficiency market in Brazil. Finally, the last chapter concludes that the energy-efficiency auction can make a great contribution for energy efficiency and energy planning, but it can't be the only mechanism used and it's not the cheapest way to realize energy-efficiency potential. (author)

  19. CHP: Combined Heat and Power: a vision of energy efficiency; Cogeracao: uma visao de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Osvaldo A.S.N. de; Abreu, Melissa E. de; Marcal, Roberto L.; Ferreira, Ademilson D.; Ferreira, Patricia E.; Monterio, Glauber J.R.; Silva, Ademir B. [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The installation of a cogeneration plant has been the subject of discussions on alternatives in the Brazilian energy matrix. Considered viable solution in the not too distant past, 2001, when Brazil was undergoing a process of the economic slowdown, lack of investments in the energy sector, unemployment and reaching the peak of the crisis with the rationing of electricity. The principle of the cogeneration system is designed primarily to meet electrical demand, so there is no surplus production of energy and do not need to buy with the concessionaire, except in cases of the system stops on account of maintenance. However, there is a recovery of waste heat produced in thermodynamic processes for generation of electricity within a model that 'conventional' would be wasted. In this case, the exploitation can be given in the form of steam, hot water and/or cold, for secondary application, or can not be linked to a process. Based on the results of the fieldwork, aims to show that, despite the limitations inherent in the process of cogeneration, is justified economically the installation of this system in relation to the growth of procedures developed in CENPES and its resident effective. (author)

  20. Why are energy reforms a failure?; ¿Por que fracasan las reformas energeticas?

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Breva, J.

    2013-07-01

    It has been demonstrated that if the renewable energies are stopped the problems will grow and that with more renewable the price of energy is reduced. An effective energy reform should begin by recognizing the impacts of the crisis on the electric power system in order to decide on profound changes in the energy mix, the regulated costs and the setting of electricity prices, to make energy saving a top priority and to promote more competitive, consumer-friendly energy markets. (Author)

  1. Strategic pathways for energy in Brazil; Os caminhos da eficiencia energetica no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Poole, Alan Douglas; Hollanda, Jayme Buarque de; Tolmasquim, Mauricio Tiomno

    1995-01-01

    The aim of this work is to suggest steps and policies to increase the introduction of cost-effective energy in conservation measures in Brazil. This report first addresses the motivations for a policy of energy efficiency and summarizes experiences in Brazil. It then considers the roles and perspectives of the diverse agents and review the instruments of policy. It concludes with an overview of strategic needs and lines of action.

  2. Reto Europeo: la Eficiencia Energetica en Edificios. La Nueva Directiva Comunitaria 31/2010

    Directory of Open Access Journals (Sweden)

    Fernández, Pablo Sandoval

    2011-08-01

    Full Text Available Abstract: The new European Directive2010/31 is trying to achieve a 20%reduction in greenhouse gas emissionsbellow 1990 levels, and by 30% in theevent of an international agreementbeing. The E.U. has a major goal to reduceour oil dependency and use morerenewable energy, especially in buildingswhere 40% of the total energy consumptiontakes place. The Directive wants toestablish a plan to achieve our goal tocompletely reduce the use of energy inbuildings by 2020. The new buildingsoccupied and owned by public authoritiesmust comply with the proposed regulationby 2018 to serve as an exampleto the private sector. By increasing renewableenergy sources the goal is to reducethe Greenhouse effect since we arealready noticing it in our daily lives andcontinuing being the global and multilateralengine of the policies against theClimate Change.Resumen: La nueva Directiva Comunitaria31/2010 pretende la consecución de una reducciónde los gases de efecto invernadero en un20% con respecto a 1990, que podría incrementarseen un 30% si existe un compromiso internacional.La UE se ha marcado como objetivo lasustitución del empleo de combustibles fósilespor energías renovables y una mayor eficienciaenergética, especialmente en los edificios dondese consume el 40% del total de energía de la UE.Esta Directiva establece la obligatoriedad de losEstados miembros de adoptar políticas y planespara conseguir que los edificios de nueva construcciónsean de consumo de energía nulo en el2020. Los edificios de titularidad pública deberánadelantarse al 2018 en dicho objetivo comopapel ejemplarizante que toda Administracióndebe jugar. Con este paso y con una sustituciónprogresiva del empleo de combustibles fósilespor energías renovables, la UE pretende mitigarlos graves efectos del calentamiento global, queya empezamos a notar en nuestra vida cotidiana,y continuar siendo el motor global y multilateralde las políticas contra el Cambio Climático.

  3. Approach to a sustainable energy management; Enfoque para una gestion energetica sustentable

    Energy Technology Data Exchange (ETDEWEB)

    Betti, Maria Cristina [Universidad Nacional de La Plata (UNLP), Buenos Aires (Argentina). Facultad de Ciencias Juridicas y Sociales

    2004-07-01

    This article describe the challenges to a sustainable energy management pointing that the success or failure of these challenges will be determined by the level of commitment that players have with the objectives pursued, the firmness of the decision making process, the economical, technical and financial support Also available and the political, economical and social development condition of each individual country.

  4. Energy demand in solar home systems; Demanda energetica em solar home systems

    Energy Technology Data Exchange (ETDEWEB)

    Trigoso, Federico Morante

    2000-07-01

    The central objective of this work is to understand the relationships between the energy demand and technical, economic, social and cultural factors that could influence it. For this a field research was established with the inclusion of 18 families distributed in four communities located in the South Coast of the Vale da Ribeira, Vale da Ribeira. The energy consumption of these families was measured along more than one year and, to facilitate its execution, it was necessary to develop an equipment capable to supply the daily consumption in units of Ampere-hour. This instrument was coupled to the photovoltaic systems in those communities and, besides, it was materialized a methodology of data obtaining that includes the users participation. The obtaining of data manually sought to provide an inter-relationship among the system, the user and the researcher with the purpose of, besides the data purely technicians, to obtain social and cultural information related with the energy uses. Through this methodology it was possible to verify that the energy demand is related with a series of factors that escape from the previous context. It was verified that the social and cultural behavior of the peoples will be reflected overall in the photovoltaic systems operation. The master thesis shows ways to deep in those studies that will be helpful to design methodology that includes all the parameters involved, still ignored. (author)

  5. On the Brazilian energetic situation 1970 - 2030; Sobre a situacao energetica brasileira: de 1970 a 2030

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Maria Thereza da Silva Lopes; Souza, Marina Correa de; Flores, Tarcisio Santos; Cruz, Nathalia Gracielle da Silva; Diamantino, Hugo Duarte; Barroso, Livia Alves; Rocha, Bruna Almeida; Souza, Romulo Luiz Mendes; Ramos, Pedro Camilo; Macedo, Marcio Henrique Marques [Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, MG (Brazil). Inst. de Ciencia e Tecnologia

    2015-07-01

    In this paper we report, first, the Brazilian energy situation from the major oil crisis in the 1970s.Next, we discuss the period from the 1980s until 2005.Finally, it is projected scenarios from recent past (2005-2013), to the future that begins today and runs until 2030.This is a work for educational purposes, in which we provide compiled data for school research in all levels. (author)

  6. Energetic identification of ions of very low fluence; Identificacion energetica de iones de muy baja fluencia

    Energy Technology Data Exchange (ETDEWEB)

    Mut C, D.A.; Balcazar, M. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-07-01

    The calibration of 2 types of plastics is presented (cellulose nitrate and polycarbonate) that detect and identify the energy of helium slight ions (1.5 to 10 MeV) and protons (0.3 to 6 MeV) in flows so low of a single particle /cm{sup 2}. This methodology is of importance in radiological protection to identify the actinides {sup 232} Th, {sup 241} Am, {sup 238} U, {sup 235} U, {sup 237} Np by means of its alpha emissions, or to carry out neutron spectroscopy in an ignored energy field by protons retrocession. The ion identification is adjusted for all the cases to a simple expression of the exponential type. The comparison is achieved among detection efficiencies for the detectors. (Author)

  7. Wind power, a clean energy alternative; El viento, una alternativa energetica limpia

    Energy Technology Data Exchange (ETDEWEB)

    Cadenas Tovar, Roberto [Comision Federal de Electricidad, La Venta (Mexico)

    1994-12-31

    That a new energy source, renewable and environmentally benign is incorporated into our electric networks, is something really significative. What better contribution for the rational use of the conventional energy sources than substituting an important part of its share for a source of the stated characteristics. The wind is a resource that Nature offers US for free, whose energy can be transformed into electricity utilizing conversion technologies that have reached maturity and are currently available in the marketplace. This document presents the characteristics of the aeolian resource in the Tehuantepec Isthmus region. A description is made of the first pilot project in our country built by Comision Federal de Electricidad at La Venta, Oaxaca. The reasoning that support the development of the projects at a greater scale and investment and production costs are exhibited for the above mentioned project. [Espanol] Que una nueva fuente de energia, renovable y ambientalmente benigna se incorpore a nuestras redes electricas, es algo verdaderamente significativo. Que mejor contribucion para el uso racional de los energeticos convencionales que substituir una parte importante de su aportacion con una fuente de las caracteristicas mencionadas. El viento es un recurso que nos brinda la naturaleza en forma gratuita, cuya energia puede transformarse en electricidad utilizando tecnologias de conversion que han alcanzado madurez y que actualmente se encuentran disponibles en el mercado. En este documento se presentan las caracteristicas del recurso eolico en la region del Istmo de Tehuantepec, se hace una descripcion del primer proyecto piloto de nuestro pais, construido por la Comision Federal de Electricidad en La Venta, Oaxaca, se exponen los argumentos que apoyan al desarrollo de proyectos en mayor escala y se exhiben los costos de inversion y produccion para el proyecto mencionado.

  8. Demand-side bidding in Brazil; Leilao de eficiencia energetica no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, Agenor Gomes Pinto

    2008-01-15

    Since the New Electric Sector Model's conception an energy-efficiency auction, like the ones used to buy new energy, was considered. Recently, the subject has been frequently commented in studies and meetings. This thesis discuss the main issues about its implementation in Brazil and proposes a model for this. The first chapter shows the history and the Electric Sector actual frame, with emphasis in the energy planning, resumed after the 2001 electricity shortage, the structure created for the system expansion and analyses the results of the new energy's auctions until now. The second chapter studies how the energy-efficiency auction can affect agents and consumers and presents the auction theory, which is growing fast in recent years, and how it can be applied to the present case, showing the possible agents' behavior - ESCOs, larger consumers and appliance manufacturers, and its implication on the auction shape. The third chapter shows the past world experience in energy-efficiency selling - the USA DSB (demand-side bidding) and its actual results and an IEA (International Energy Agency) study about this market mechanism of energy-efficiency promotion. 'The DSB works but it's not simple' (Geller, 2006) sums up the main conclusion about DSB - it develops the M and V techniques and the ESCO industry, making energy-efficiency as good as new generation for system's growing. The fourth chapter presents a proposal for the energy-efficiency auction's implementation in Brazil - its opportunity, resources source, regional aspects and the steps to get there. The fifth chapter analyses the M and V 's techniques and shows examples of the four options for projects - the M and V is essential for the auction success and its development, on the other hand, can leverage the energy-efficiency market in Brazil. Finally, the last chapter concludes that the energy-efficiency auction can make a great contribution for energy efficiency and energy planning, but it can't be the only mechanism used and it's not the cheapest way to realize energy-efficiency potential. (author)

  9. La crisi energetica nel mondo e in Italia da Enrico Fermi ed Edoardo Amaldi a oggi

    CERN Document Server

    Salvini, Giorgio

    2007-01-01

    Enrico Fermi e il suo allievo Edoardo Amaldi, grandi padri della Scuola di fisica nucleare italiana, hanno promosso l'impiego pacifico dell'energia nucleare: Fermi con il primo reattore a Chicago nel 1942, Arnaldi con i suoi contributi a tutti gli usi pacifici, dalla medicina alla produzione di energia. L'Italia, però, ha fatto eccessivo ricorso al petrolio, di cui non è produttrice. La ricerca è rimasta molto indietro rispetto a quella degli altri paesi e la politica sta dedicando pochissimi sforzi a questa gravissima situazione. Ragioni economiche, nonché ambientali, esigono ora una revisione e una ricontestualizzazione del problema. Durante un importante Convegno, tenutosi a Roma il 15 e 16 maggio 2007, alcuni tra i più noti ed esperti fisici italiani e stranieri hanno discusso proprio di questo problema. L'intento del volume, che raccoglie gli interventi del Convegno romano, è quello di fornire dati e informazioni che mettano il lettore in condizione di farsi un'idea propria, libera da pregiudizi, s...

  10. Comparing nuclear power with other energy sources; Comparacion de la energia nuclear con otras fuentes energeticas

    Energy Technology Data Exchange (ETDEWEB)

    Rey, Francisco C [Comision Nacional de Energia Atomica, General San Martin (Argentina). Centro Atomico Constituyentes

    2001-07-01

    The economics of electric generation of nuclear, hydro, oil and gas origin are compared. A similar comparison is also made from the health and environment standpoint for the fossil, nuclear, solar and wind generation. A risk assessment for energies of different origin is outlined and the significance of the greenhouse effect is emphasised. A comprehensive economic and environmental evaluation is recommended for the energy planning.

  11. Non governmental organizations and energy efficiency promotion; O terceiro setor e a promocao da eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Aragao Neto, Raymundo Moniz de; Hahn, Andreas Alexandeer [IIEC - International Institute for Energy Conservation, Washington, D.C. (United States)

    2004-07-01

    The paper presents actions from IIEC - International Institute for Energy Conservation, NGO which mission is to support social and economic transformation of developing countries, based upon efficient use of energy. It shows aspects such as innovation, organizational structure, decision-making process and ongoing and delivered projects in Brazil. The importance of the so-called 'Third Sector' (expression normally used) in Brazil is reinforced in this paper, presenting numbers and the increased importance of NGOs in Brazil, people involved and relevance to the economy. The paper focuses also the behaviour change when people migrate from consulting area to NGO, specially learning new meanings for profit and results. (author)

  12. Energetic efficiency in the consumption sectors in Brazil; Eficiencia energetica nos setores de consumo no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Soares, Jeferson B. [Empresa de Pesquisa Energetica (EPE), Rio de Janeiro, RJ (Brazil); Achao, Carla L.; Garcia, Agenor G.; Martins, Jose M.D.; Oliveira, Ricardo G. de; Queiroz, Renato P.

    2008-07-01

    The present paper aims to assess long run energy savings for Brazil in the long term, according to economic scenarios established in Energy National Plan 2030 (PNE 2030). Methodological issues are presented as well as the basic assumptions for each scenario/end use consumption and related energy/electricity savings. In 2030, Brazilian industrial and transportation sectors still account for the large share of total energy savings (more than 80% in 2030). At the end of this paper, key points are analyzed in order to improve energy saving estimates. (author)

  13. Photovoltaic power supplies: Energy option feasibility. Solare fotovoltaico come opzione energetica

    Energy Technology Data Exchange (ETDEWEB)

    Coiante, D.; Barra, L. (ENEA, Casaccia (Italy). Area Energetica)

    1993-01-01

    Commercialization prospects for grid connected, stand-alone and hydrogen- production photovoltaic power plants are assessed. The paper traces the evolution of the development of photovoltaic modules and correlates trends in R D expenditure and progress made with subsequent drops in the cost of photovoltaic power equipment. Assessments are made of limits in the marketability of grid connected photovoltaic power supplies and comments are made as to the wisdom of the current directions being taken by research groups operating in this field.

  14. Coal: security of supply and energy diversity. Carbon: seguridad de abastecimiento y diversificacion energetica

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez-Irun Sanchez, G [Carboex, Madrid (Spain)

    1991-08-01

    Commences by reviewing the advantages of coal as a fuel source, namely: large availability of reserves; deposits located in every continent; life of reserves estimated to be hundreds of years. These three aspects make coal an extremely reliable energy source. 3 figs.

  15. Brazil and the energy integration; O Brasil e a integracao energetica

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, Lizett P.; Udaeta, Miguel M.; Burani, Geraldo F. [Universidade de Sao Paulo (USP), SP (Brazil). Inst. de Eletrotecnica e Energia

    2008-07-01

    This article is intended to show the interest of Brazil in the materialization of hydroelectric exploitations and the gas integration with other countries in the region, but also show the evolution of the complementarity of electricity with natural gas (NG). The increase in electrical interconnections and the mesh NG with neighbouring countries brings systemic gains, mitigating the risk of not attending to the energy market, and increase the supply of alternatives. The relationship between these two energy is seen by examining the expansion of the Brazilian electrical system. However, plans for expansion achieve greater involvement of NG in the power stations generation, resulting in an uncertain situation, because of the events in Bolivia, a country that supplies of significant volumes of gas to Brazil. (author)

  16. Public exposure due to radioactive liquid effluent discharges from Instituto de Pesquisas Energeticas Nucleares/IPEN

    International Nuclear Information System (INIS)

    Rocca, Fatima F.D.

    1995-01-01

    The physical and social-economic characterization of aquatic environment influenced by IPEN was performed and possible exposure pathways were identified. The effective dose equivalent to the critical groups were estimated by using a mathematic model that simulate radionuclide transport through environment components, and dosimetric models that relate activity at environment components to public exposure. This study has concluded that there is not a single critical group that receives the highest dose equivalents from the source, but all the populational groups potentially exposed receive doses at the same level, and then all of them must be considered in a radiological assessment process. The results showed that the public exposure due to liquid discharges from IPEN remains bellow established dose limits. (author). 58 refs., 28 figs., 24 tabs

  17. Environmental school aids to the energetic education; La escuela ambiental contribuye a la educacion energetica

    Energy Technology Data Exchange (ETDEWEB)

    Benavides, B. A. C.; Coto, C. J. M.

    2004-07-01

    Elementary school is a propitious space to contribute to knowledge and adoption of habits related to the use of environmentally friendly energies. This article refers to a methodological strategy used in education for renewable energies, specifically solar energy, within the framework of the environmental school. Its objective is to share a successful strategy to diffuse the thermal applications of solar energy for home and school. (Author)

  18. Risk assessment in energy efficiency projects; Gerenciamento de riscos em projetos de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Aragao Neto, Raymundo Moniz de

    2003-08-15

    This paper aims to present processes related to risk management in energy efficiency projects, delivered in a performance contracting basis. Introductory comments will be presented about the considered project model, emphasizing the necessity of proper processes of risk management and evaluation and their treatment according methodology developed by PMI - Project Management Institute, grouped in its publication PMBOK - Project Management Body of Knowledge. A hypothetical project will be demonstrated, but similar to the Brazilian Body of Knowledge. A hypothetical project will be demonstrated, but similar to the Brazilian market reality, as a form of illustrating the considered methodology.

  19. Energy Optimization in WWTP of Murcia Region; Optimizacion energetica en EDAR de la Region de Murcia

    Energy Technology Data Exchange (ETDEWEB)

    Simon Andreu, P.; Lardin Mifsut, C.; Abellan Solar, M.

    2012-07-01

    One of the main functions of Entidad de Saneamiento y Depuracion de la Region de Murcia (ESAMUR), is the management and maintenance of public wastewater treatment plants (WWTP) in order to obtain good quality water in accordance with wastewater reuse regulations, and at the same time, enhance each process related to wastewater treatment plants (WWTP) in order to obtain good quality water in accordance with wastewater reuse regulations, and at the same time, enhance each process related to wastewater treatment. The energy costs are almost 35% of the global costs in WWTP and a reduction in these costs has been a priority for ESAMUR during the last few years. We know that good design of WWTP is fundamental to obtain suitable energy ratios, and we are changing much of the operational criteria, evaluating the minimum amount of oxygen required by bacteria, studying the best ways of transferring oxygen from the gas to liquid phases in order in order to minimize aeration requirements, reducing the pressure losses, consuming the minimum energy for supplying an amount of air, testing control systems to manage air consumption, changing blowers for others more efficient, and improving the process of anaerobic fermentation of sludge, increasing the production of biogas by means of co-digestion processes and pre-treatments for improving the hydrolysis step. (Author)

  20. South American energy integration: new perspectives; Novas perspectivas para a integracao energetica sul-americana

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Jose Malhaes da [Malhaes da Silva Consultoria Ltda., Rio de Janeiro, RJ (Brazil); Salomao, Luiz Alfredo [Universidade Candido Mendes, Rio de Janeiro, RJ (Brazil). Escola de Politicas Publicas e Governo

    2008-07-01

    This paper analyses the South American energy integration, the advantages related to this process as well as the existing obstacles . What is the scope in terms of projects and initiatives, and the role of political and institutional barriers to be overcome. (author)

  1. Policy of productive development and energy efficiency; Politica de desenvolvimento produtivo e eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Naturesa, Jim Silva [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Fac. de Engenharia Civil Arquitetura e Urbanismo. Nucleo Interdisciplinar de Planejamento Energetico], e-mail: cam@fec.unicamp.br; Mariotoni, Carlos Alberto [Faculdade Politecnica de Jundiai (FPJ), SP (Brazil). Anhanguera Educacional

    2008-07-01

    The new industry policy in Brazil called PDP (Politica de Desenvolvimento Produtivo) and implications on Brazilian energy efficiency program are discussed. The PINTEC - Industrial Research for Technology Innovation (2003/05) indicates a low R and D and I investment of the Brazilian industries. It is expected that and energy efficiency project can be seen as an innovation project because this brings new equipment and a more advanced knowledge to industry, which helps to reduce electrical energy consumption, consumer' bills and production costs. (author)

  2. Cogeneration: A solution from energetical auditoring. Cogeneracion: hipotesis de solucion en auditorias energeticas

    Energy Technology Data Exchange (ETDEWEB)

    Gomara Martinez, E; Riesco Leal, P

    1993-01-01

    An energetical auditor provides the solutions to avoid environmental problems generated from the consumption of a determined fuel and reduces fuel consumption. One of the solutions is changing the energy source or introducing cogeneration. The author introduces under the point of view of an auditor the reasons to use to generation. (Author)

  3. The energy crisis: some political considerations; La crisis energetica: algunas consideraciones politicas

    Energy Technology Data Exchange (ETDEWEB)

    Riechmann, J.

    2009-07-01

    Trends like global warming and peak oil (the end of the cheap fossil fuel age) embody an enormous potential of natural catastrophe and socio-economic upheaval. Are our affluent societies ready for the forthcoming conflicts around scarcity, when expansionist human systems collide with the biophysical limits of our finite planet? Unfortunately, we cannot exclude a revival of anti-humanist and anti-democratic political movements in XXIst century. With the global socio-ecological crisis as a background, it is worth considering the idea of Hitler as a forerunner. (Author) 34 refs.

  4. Anti-thyroid drugs or {sup 131}I therapy to control the hyperthyroidism of graves disease: a cost-effectiveness analysis; Tratamento clinico com drogas antitireoidianas ou dose terapeutica de Iodo-131 no controle do hipertireoidismo na doenca de Graves: avaliacao dos custos e beneficios

    Energy Technology Data Exchange (ETDEWEB)

    Cruz Junior, Antonio Fiel; Takahashi, Miriam Hideco; Albino, Claudio Cordeiro [Universidade Estadual de Londrina, PR (Brazil)]. E-mail: afiel@bs2.com.br

    2006-12-15

    In this study, we set out to evaluate the costs and effectiveness of the 2 most used therapies in our region, ATD or RAI. 23 patients, 6 men and 16 women, with a mean age of 35.4 years, treated with ATD, and 35 patients, 5 men and 30 women, mean age of 39.4 years, treated with RAI, were studied. After 2 years receiving ATD, 21 patients achieved euthyroidism and 2 remained hyperthyroid. In the RAI group, 21 patients presented hypothyroidism and 13 became euthyroid. To calculate the costs of each therapy, we analyzed the number of visits during this period, the laboratory data and the drugs needed, such as tiamazol and/or thyroxine. The group treated only with ATD needed a higher number of visits and laboratory measurements, with the mean total cost of R$ 1,345.81, while the RAI group spent a mean amount of R$ 622.94. Therefore, the costs of the RAI treatment were 53.5% lower than clinical therapy with ATD. The present study demonstrates that RAI treatment has a lower cost than ATD, being very effective in controlling the hyperthyroidism of Graves' disease. (author)

  5. Contribution to the evaluation of vortex-induced vibrations analysis using 'wake oscillators' and 'vortex-tracking' models; Contribuicao a avaliacao dos modelos 'wake oscillator' e 'vortex tracking' para analise de vibracoes induzidas por vortices

    Energy Technology Data Exchange (ETDEWEB)

    Carneiro, Daniel L. [Bureau Veritas do Brasil, Rio de Janeiro, RJ (Brazil); Ellwanger, Gilberto B. [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE); Galgoul, Nelson S. [SUPORTE Consultoria e Projetos, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Fatigue due to vortex-induced vibrations (VIV) is one of the major uncertainties today in the design of slender offshore structures, such as risers, pipelines, umbilicals, tendons and mooring lines, required for oil and gas production in deep waters. The absence of reliable tools for quantitative analyses of this phenomenon is a technological barrier, which is being faced by several research groups, generating tens of thesis and articles every year. This paper presents VIV results achieved by the author, using 'wake oscillator' and 'vortex tracking' models, when researching for his M. Sc. dissertation. Time domain analyses were performed using a commercial software. First results describe the response of the evaluated models for two degrees-of-freedom rigid cylinders, which were compared to values prescribed in recognized recommended practices. Afterwards, VIV analyses results for a steel catenary 10-inch diameter riser in three dimensional current profiles were compared to measured values. The considered riser, installed in 910 m water depth offshore Brazil, is possibly the only monitored SCR with no VIV suppression devices in the world today. The results were considered satisfactory, despite some discrepancies. The authors expect the presented results to contribute in further studies on these models. (author)

  6. Load supply reliability evaluation applied to the house load of Itaipu power plant - a post operation analysis for the year 1992; A confiabilidade operativa de atendimento a carga da usina de Itaipu 50 Hz no ano de 1992 - uma avaliacao pos-operativa

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Rui J.G.C.; Almeida, Marcelino P [Itaipu Binacional, Foz do Iguacu, PR (Brazil)

    1994-12-31

    This work presents the statistics of the 50 Hz Itaipu hydroelectric power plant in the 1992, under the aspect operative spinning reserve, comparing it with the obtained results through of the calculus of the operative reliability. (author) 7 refs.

  7. Retrospective analysis of concurrent chemoradiotherapy for head and neck squamous-cell carcinoma: preliminary experience from ABC School of Medicine, Santo Andre, Sao Paulo State, Brazil; Avaliacao retrospectiva do tratamento quimiorradioterapico concomitante em carcinoma epidermoide de cabeca e pescoco: experiencia preliminar da Faculdade de Medicina do ABC, Santo Andre, SP

    Energy Technology Data Exchange (ETDEWEB)

    Borba Junior, Antonio Freitas [Faculdade de Medicina do ABC, Santo Andre, SP (Brazil). Dept. de Oncologia Clinica; Giglio, Auro del [Faculdade de Medicina do ABC, Santo Andre, SP (Brazil). Dept. de Hematologia e Oncologia]. E-mail: sandrabr@netpoint.com.br; Philbert, Paula Lajolo; Kaliks, Rafael [Faculdade de Medicina do ABC, Santo Andre, SP (Brazil). Hospital de Ensino

    2005-07-01

    Background: concurrent chemoradiotherapy constitutes an option for head and neck squamous-cell carcinoma (HNSCC) treatment. Although we found a high incidence of this tumor in our population, we do not have so far results reported for the Brazilian population. Methods: medical records from HNSCC patients who ere treated with concurrent chemoradiotherapy between January 2001 to June 2004 were systematically reviewed. Results: twenty-two HNSCC patients were treated with chemoradiotherapy. The median age was 56 years. The primary tumor site was located in the oropharynx in 11, the larynx in 9 and hypopharynx in 2 patients. Most of the patients (86%) presented with stage III or IV disease. 19 (86%) patients were treated with Cisplatin 100 mg/m{sup 2} D1-22-43, and 3 (14%) patients used Cisplatin 20 mg/m{sup 2} weekly, concurrent with radiotherapy. Hematological and renal toxicity grade 3 or higher was seen in 58% and 10% patients, respectively. Eleven patients achieved a complete response and 8 a partial response. Median disease-free survival was 10 months and median overall survival was 25 months. (author)

  8. Didactic trainer. Solar photovoltaic panels analysis; Analisis de paneles solares fotovoltaicos

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, J.; Ruiz, J.; Gorjon, J.; Quiles, J. A.; Cavaller, N.; Bodega, J.; Alonso-Abella, M.; Chenlo, F.

    2009-07-01

    The Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT) and the Instituto de Ensenanza Secundaria Virgen de la Paloma (IES VP), through their respective Metrology and Electricity-Electronics departments, have established a first agreement of co-operation with the aim of introducing and enhancing the solar photovoltaic energy within the professional teachings field. This agreements is a result of the compromise of designing entirely in the Electricity-electronics department of IES VP a didactic trainer prototype which enables to analyze cells and photovoltaic panels, all under the supervision and logistic-technical support of CIEMAT Photovoltaic Laboratory. (Author)

  9. Evaluation of a system of refrigeration with absorption cycle using the direct burning of natural gas for tropical fruits storage; Avaliacao de um sistema de refrigeracao com ciclo de absorcao utilizando a queima direta de gas natural para armazenamento de frutas tropicais

    Energy Technology Data Exchange (ETDEWEB)

    Bartolomeu, Lair S.; Torres, Ednildo A. [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Escola Politecnica. Lab. de Energia e Gas; Silva, Gabriel F. [Universidade Federal de Sergipe (UFS), Aracaju, SE (Brazil); Martins, Ronaldo M. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Materiais. CQDM; Campos, Michel F. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Gerencia de Tecnologia do Gas Natural. Rede GasEnergia

    2004-07-01

    This work has the purpose to analyze an alternative method in the conservation of tropical fruits in chamber cooled through the technology of use of the natural gas as energy source. The study it was carried through in chiller of absorption, Robur model, of 5TR, which meets in the campus of the Federal University of Sergipe (UFS/LEG). The energy analysis had as objective to study the process involving the cycle and its components. Of the analysis of first law was gotten a power of refrigeration of 8,8 kW and a COP=0,32 and the analysis of second law {beta}=0,29. The exergetic analysis had for intention to evaluate the amount and the quality of the energy in the system. The heat generator was the component that presented the biggest irreversibility, whose relation with the total irreversibility was about 70%. In the absorber the lesser exergetic efficiency was verified. Project is supported by the GasEnergia/PETROBRAS. (author)

  10. Quality control assessment data for planning radiotherapy with VMAT Technique made at the Hospital Sao Lucas, Porto Alegre, RS, Brazil; Avaliacao dos dados de controle de qualidade para planejamentos radioterapicos com a tecnica VMAT realizados no Hospital Sao Lucas, Porto Alegre

    Energy Technology Data Exchange (ETDEWEB)

    Leidens, Matheus; Lopes, Juliane S.; Estacio, Daniela R.; Bonatto, Larisse N.; Sansson, Angela; Sbaraini, Patricia; Duarte, Lucas O.; Silva, Ana M. Marques da, E-mail: juliane.lopes@pucrs.br [Pontificia Universidade Catolica do Rio Grande do Sul (PUC-RS), Porto Alegre, RS (Brazil)

    2016-07-01

    The objective of this study was to evaluate the procedures used for quality control (QC) for each individual patient, planned with the volumetric modulated arc radiotherapy technique (VMAT), used in the routine of the institution's radiotherapy service. The QC of 29 plans, from August 2015 to October 2015, in 15 cases of prostate, and 14 of head and neck. During QC, verification planning were created, performed before starting the treatment. Two evaluations were performed: gamma analysis (γ), which compares the measured and calculated dose distribution, verified through the EPID (Electronic Portal Imaging Device); and the verification of point dose delivered at the isocenter treatment, using a simulator object with an ionization chamber. The method involved the creation of verification plans of treatments and their evaluation and phantom. The results of analysis, for prostate and head and neck were, on average, (96.0 ± 2.2)% and (98.8 ± 1.4)%, respectively. For the prostate, in 93.3% of the cases examined, the differences between the dose measured by the ionization chamber and that generated by the verification plan were lower than 5%, and for CP, 92.9%. The treatment planning in the service, on average, obeyed the acceptance criteria and the dose differences of analysis. Thus, the procedures performed in the treatments using the VMAT of the institution are suitable for clinical application. (author)

  11. Heavy and viscous oil evaluation in a deep water environment: an integrated evaluation process; Avaliacao de oleo pesado e viscoso em aguas profundas: um processo integrado de avaliacao

    Energy Technology Data Exchange (ETDEWEB)

    Barreto, Wesley S.; Armacanqui, Gina [Schlumberger, Rio de Janeiro, RJ (United States)

    2004-07-01

    There are many challenges related to heavy and viscous oil reserves evaluation. When this includes a deep-water offshore environment the challenges, including safety issues, increase in complexity. In this paper we share some experiences obtained during the preparation and execution of heavy oil evaluation activities. The process uses the petrophysical and fluid characterization preliminary results obtained during the logging phase as well as prior information from correlation field/wells in order to design the appropriate ESP configuration and location in the DST string as well as the sampler location which should allow monophasic sampling. During the operation a real time interpretation is performed validating the data obtained and sensitizing parameters such as pump frequency, bubble point pressure, GOR and viscosities, allowing the diagnostic of the operation and consequent appropriated flow conditions in order to provide a optimum picture supporting decisions regarding sampling time and other specific evaluation objectives. The examples presented illustrate the methodology proposed of integrated evaluation applied to heavy oil and its benefits. (author)

  12. Decision analysis multicriteria analysis

    International Nuclear Information System (INIS)

    Lombard, J.

    1986-09-01

    The ALARA procedure covers a wide range of decisions from the simplest to the most complex one. For the simplest one the engineering judgement is generally enough and the use of a decision aiding technique is therefore not necessary. For some decisions the comparison of the available protection option may be performed from two or a few criteria (or attributes) (protection cost, collective dose,...) and the use of rather simple decision aiding techniques, like the Cost Effectiveness Analysis or the Cost Benefit Analysis, is quite enough. For the more complex decisions, involving numerous criteria or for decisions involving large uncertainties or qualitative judgement the use of these techniques, even the extended cost benefit analysis, is not recommended and appropriate techniques like multi-attribute decision aiding techniques are more relevant. There is a lot of such particular techniques and it is not possible to present all of them. Therefore only two broad categories of multi-attribute decision aiding techniques will be presented here: decision analysis and the outranking analysis

  13. Evaluation of the micro nutrients daily ingestion and mercury on pre-elementary school children from some communities of the state of Amazonas, Brazil; Avaliacao da ingestao diaria de micronutrientes e mercurio em pre-escolares de algumas comunidades do Estado do Amazonas, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Andrea C.P. [Universidade Presbiteriana Mackenzie, Sao Paulo, SP (Brazil); Favaro, Deborah I.T.; Farias, Luciana; Maihara, Vera A.; Vasconcellos, Marina B.A. [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)]. E-mail: defavaro@ipen.br; ime, P.L.; Alencar, Fernando H.; Yuyama, Lucia K. [Instituto Nacional de Pesquisas da Amazonia (INPA), Manaus, AM (Brazil)]. E-mail: yuyama@inpa.gov.br

    2007-07-01

    This study evaluates the daily dietetic ingestion of Hg and some nutrients of pre-scholar children from eight communities of Amazonas state, Brazil. Some children from each community were selected and their diets (24 hours total consumption) were collected by the duplicate quantity method and a pool of diets composed for each of these communities. The diet samples were analysed for the Hg total content by a CV AAS linear accelerator and neutron activation analysis for determination of Ca, Fe, K, Se and Zn micro nutrients. Both analytical methodologies precision and accuracy were validated using the certified reference materials analysis. The provisional tolerable weekly ingestion (PTWI) for Hg and the daily micro nutrient ingestion were calculated for each group, considering an 10 kg average weight for each child. The obtained results for all diets were shown the inadequacy prevail for the evaluated micro nutrients, and some communities exceeded the limit of 5 {mu}g Hg/kg of body weight (PTWI). Those results suggested that the nutritional education program must be implemented at those communities, aiming the better utilization of the local food natural resources. (author)

  14. Appraisal of the biocide activity of products for the control of microorganisms associated with corrosive processes in the Bacia de Campos pipelines; Avaliacao da acao biocida de produtos para o controle de microrganismos associados a processos corrosivos em oledutos da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Penna, Monica de Oliveira [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas. Setor de Biotecnologia e Ecossistemas]. E-mail: mpena@cenpes.petrobras.com.br; Andrade, Cynthia de Azevedo [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas. Setor de Tecnologia de Materiais, Equipamentos e Corrosao]. E-mail: cynthiaandrade@cenpes.petrobras.com.br; Nascimento, Juliana Rangel do; Silva, Edilson Domingos da; Souza, Leonardo Suhett de [Fundacao GORCEIX, Ouro Preto, MG (Brazil)]. E-mail: julianarn@cenpes.petrobras.com.br; edilson@cenpes.petrobras.com.br; suhett@cenpes.petrobras.com.br

    2001-12-01

    The possible effect of corrosion inhibitors on bacteria has significant interest for the oil and gas industry since, in addition to presenting lower operational costs than biocides due to the low concentrations used, they allow a simultaneous activity on the inhibition of corrosion and adhesion of sulfate reducing-bacteria. In the case of pipes with low BSW oil fluid low, the benefit of using corrosion inhibitors in microorganism combat is even more significant in view of their dispersing characteristics during the oil phase. Herein presented are the laboratorial analysis results of the biocidal effects of six commercial products, four of which having corrosion inhibition function and two with biocidal quality. During this analysis, an oil sample collected from a Petrobras pipeline and a mixed culture of sulfate-reducing mesophilic bacteria (m-BRS) obtained from this sample were used. The study was divided in two phases: the first phase performed in semi-static conditions and, the second phase performed in dynamic conditions (loop). Compositions were analyzed according to their activities regarding the growth control of sulfate-reducing planktonic bacteria, according to their time reducing performance regarding microbial growth (activity) detection and regarding sessile bacteria (pre-adhered bacteria). Results showed that the two biocidal products had the best performance in the presence of oil and that the tetra kishidroximethyl phosphonium sulfate (THPS) at 75% was the most effective. Of the four corrosion inhibitors tested for efficiency regarding BRS growth in solution, three were slightly stimulating and the fourth was intensely stimulating. (author)

  15. Microbiological, physicochemical and sensory evaluation of cabbage and carrot minimally processed salad after radiation treatment intended to immunocompromised patients or with special diets; Avaliacao microbiologica, fisico-quimica e sensorial de salada de repolho com cenoura minimamente processada apos o tratamento por radiacao gama destinado a pacientes imunocomprometidos ou com dietas especiais

    Energy Technology Data Exchange (ETDEWEB)

    Nunes, Thaise Cristine Fernandes

    2015-09-01

    During and after the treatment of cancer, people with HIV or transplants, the food intake can offer a well-being to the patient, because the action of eating right helps people to feel strong. Healthy people have their immune system working properly and can tolerate small amounts of bacteria. However, immunocompromised persons may not be able to and however immunocompromised people cannot fight this small amount of microorganisms and require a diet with very low microbiological count to avoid contact with potentially harmful bacteria. This is called neutropenic diet. These patients are susceptible to food contamination, so that it's not advisable the ingestion of raw products. The vegetable irradiation with low doses has the purpose of reducing the microbial load. The aim of this study was to obtain data on microbiological, sensorial e physicochemical aspects in minimally processed 'Primavera' salad irradiated with different doses of gamma radiation designed to immunocompromised patients. It were used doses of 1.0kGy, 2.0kGy, 3.0kGy and 4.0kGy irradiated in the Multipurpose Irradiator {sup 60}Co located in Radiation Technology Center. Microbiological analyzes were performed (n=25) using Petrifilm, sensory analysis using the sensory acceptance test (n=30) and triangular (n=15) and texture analysis (n=90) in the Food Microbiology Laboratory located at the Radiation Technology Center. The texture analysis was performed with the aid of a texturometer equipped with 5 kg load cell using a triangular cutting Warner-Bratzler Knife blade probe with the descent speed of 2mm/sec. All results were expressed in Newtons (N). The results showed that for microbiological analyzes the standards were followed according to the RDC 12/01 ANVISA. For the sensory test of acceptation no difference was found among the samples, however in the triangular test could be found slight differences between samples irradiated with 4.0kGy and control and there was significant

  16. Evaluation of chromosome aberration frequency instable in individual groups residents at the municipality of Monte Alegre, Para, Brazil, exposed to radon; Avaliacao da frequencia de aberracoes cromossomicas instaveis em grupos de individuos residentes no municipio de Monte Alegre - PA expostos diferencialmente ao radonio

    Energy Technology Data Exchange (ETDEWEB)

    Yunes, Samira Nogarol

    2010-07-01

    The municipality of Monte Alegre is a region that presents natural radiation high due to the presence of the radionuclide uranium ({sup 238}U) in its soil, which through its decay gives rise to element Rn, a gas. The radioactivity of the rocks has become a problem for the population of Monte Alegre, from the moment when the radioactive material began to be used in the construction of houses and paving of streets. Among all bio markers related to environmental exposures and its biological effects, the chromosomal aberrations are considered good bio markers as predictors of the risk of cancer. Studies suggest that the frequency of chromosomal aberrations may be related to the genetic instability individual and/or exposure to ionizing radiation. Our work aimed to evaluate the frequency of chromosomal aberrations in individuals in the region of high natural radioactivity in Monte Alegre-PA. As well as to correlate the cytogenetic analysis made in this study with the results of analysis of frequency of polymorphisms of genes of DNA repair carried out in another study that resulted in other dissertation. In accordance with the distribution of the data obtained in characterizing environmental radiological and in the calculation of dose, were chosen residents of homes with more and less exposure to radiation. The samples of peripheral blood of 85 individuals of the resident population of the region of Monte Alegre - PA were collected and examine provided two slides for individual was performed to verify the quality of the sample. Through this evaluation we decide that 33% of the material collected, or is, samples of 28 individuals were in suitable conditions for analysis of the frequency of chromosomal aberrations. After the collections lymphocytes present in the sample were cultivated in accordance with the methodology proposed for obtaining of cells in metaphase. were analyzed 6,177 metaphases of 28 individuals among which were found dicentric chromosomes 4 and 19

  17. Quantitative evaluation of Streptococcus mutans and Candida sp and salivary factors in the oral cavity of patients submitted to radiotherapy; Avaliacao quantitativa de Streptococcus do grupo mutans e Candida sp e fatores salivares na cavidade bucal de pacientes submetidos a radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Spolidorio, Denise Madalena Palomari; Spolidorio, Luis Carlos; Barbeiro, Roberto Henrique; Bernardo, Wagner Luis Carvalho; Pavan, Sabrina [UNESP, Araraquara, SP (Brazil). Faculdade de Odontologia; Hoefling, Jose Francisco [Universidade Estadual de Campinas, Piracicaba, SP (Brazil). Faculdade de Odontologia

    2001-12-01

    The aim of this study was to quantify the microorganisms Streptococcus mutans and Candida sp in the oral cavity of patients with oropharynx carcinoma, before, during and after radiotherapy, and to correlate the results with salivary factors such as pH, buffer capacity and flow rate. Saliva samples were collected, diluted and inoculated in SB-20 agar and in Sabouraud agar, for Streptococcus mutans and Candida sp, respectively. Previously to dilution, the concentrated saliva was analyzed, and the salivary factors were determined. After the growth of colonies, the number of microorganisms was determined in CFU/ml. The analysis of the results allowed to conclude that the salivary factors are related to the presence of microorganisms, and that the number of CFU/ml increased as salivary flow rate decreased. The effects of radiation compromised salivary homeostasis and favored the increase of infection by yeasts and bacteria. (author)

  18. Evaluation of the potential energy briquettes made with corn stubble (Zea mays) and soybean residue (Glycine max (L.)) combined with waste wood; Avaliacao do potencial energetico de briquetes confeccionados com residuo de milho (Zea mays) e residuo de soja (Glycine max (L.)) combinado com residuo de madeira

    Energy Technology Data Exchange (ETDEWEB)

    Travessini, Rosana; Schutz, Fabiana Costa de Araujo; Oyama, Paulo; Possan, Edna; Bittencourt, Paulo R.S. [Universidade Tecnologica Federal do Parana (UTFPR), Medianeira, PR (Brazil)], emails: rosana_travessini@yahoo.com.br, fabianaschutz@utfpr.edu.br, oyama_pt@hotmail.com, epossan@gmail.com, paulob@utfpr.edu.br

    2011-07-01

    The agriculture industry produces a large amount of biomass whose use constitutes an economically viable alternative energy through the compression of the lignocellulosic portion, replacing the wood with an equivalent product. This is possible through the briquette, which is a very efficient way to concentrate the available energy in biomass. This study aimed to evaluate the efficiency of burning briquettes. The making of briquettes was performed in the laboratory of Electro mechanics and burning at the Laboratory of Environmental UTFPR Campus Medianeira / PR. For the analysis, the energy balance of the combinations we used a bomb calorimeter IKA C5000, Laboratory of Biomass Energy (LEB), Federal University of Parana - UFPR. From the results we can conclude that in all aspects of the briquettes made from soybean residues are more efficient and still points to the need for studies to the development of more efficient equipment for these specific applications. (author)

  19. Evaluation of clayey masses compositions starting from the residue incorporation of the red ceramic industry to obtain tubular ceramic membranes; Avaliacao das composicoes de massas argilosas a partir da incorporacao de residuo da industria de ceramica vermelha na obtencao de membranas ceramicas tubulares

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Adriano Lima da; Chaves, Alexsandra Cristina; Luna, Carlos Bruno Barreto; Neves, Gelmires de Araujo; Lira, Helio de Lucena, E-mail: adrianolimadasilva@hotmail.com, E-mail: alexsandra.chaves@ifap.edu.br, E-mail: brunobarretodemaufcg@hotmail.com, E-mail: gelmires@ufcg.edu.br, E-mail: helio@ufcg.edu.br [Universidade Federal de Campina Grande (UAEMa/CCT/UFCG), PB (Brazil). Unidade Academica de Engenharia de Materiais

    2017-01-15

    The inappropriate residue disposal of red ceramic industry is very high. Nowadays, one of the major challenges is the investigation of processes to obtain alternative materials, enabling the use of these residues to manufacture new materials. This work's objective is to study clayey masses' compositions starting from the residue incorporation of the red ceramic industry to be used in tubular ceramic membranes. Two compositions of ceramic masses were established, composition A (50% of residue) and composition B (70% of residue). Granulometric analysis of the ceramic masses presented an average size of particles, what indicates membranes in the microfiltration scale. Another observed factor is related to the increase of residue amount, what favored a decrease in the ceramic mass' plasticity. A rise in the apparent porosity was also observed, probably because of a possible growing in the bigger pores numbers, due to the sintering high temperature and the elevation of residue quantity itself. (author)

  20. Technology for manufacturing dispersion nuclear fuel at Instituto de Pesquisas Energeticas e Nucleares IPEN/CNEN-SP, Brazil

    International Nuclear Information System (INIS)

    Durazzo, M.; Carvalho, E.F. Urano de; Saliba-Silva, A.M.; Souza, J.A.B.; Riella, H.G.

    2008-01-01

    IPEN has been working for increasing radioisotope production in order to supply the expanding demand for radiopharmaceutical medicines requested by the Brazilian welfare. To reach this objective, the IEA-R1 research reactor power capacity was recently increased from 2 MW to 3.5 MW. Since 1988 IPEN has been manufacturing its own fuel element, initially based on U 3 O 8 -Al dispersion fuel plates with 2.3 g U/cm 3 . To support the reactor power increase, higher uranium density had to be achieved for better irradiation flux and also to minimize the irradiated fuel elements to be stored. Uranium silicide was the chosen option. This paper describes the results of this program and the current status of silicide fuel fabrication and qualification. (author)

  1. PETROBRAS: the race to the energetic self-sufficiency; PETROBRAS: a corrida para a auto-suficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Silva, O [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    1987-10-01

    An evaluation of activities of PETROBRAS, during its three decades of existence, its actuation in field of drilling and prospect, its evolution on technology management,integration inter holding industries on petrochemical, fuel distribution and oil refines are discussed. The development of its actuation on offshore oil exploration and economic aspects of the enterprise are debated 8 figs.

  2. Hydrogen and fuel cells: security and energy sustainability; Hidrogeno y pilas de combustible: seguridad y sostenibilidad energetica

    Energy Technology Data Exchange (ETDEWEB)

    Brey Sanchez, J. J.

    2012-11-01

    As fuel, hydrogen burns, burn like gasoline or natural gas, but with the difference that the only emission is water vapor produced without the presence of carbon dioxide. So, this is a clean fuel when its use. However, while the coal, oil or natural gas is found in nature, hydrogen must be produced from a primary energy source: it is said to be a energy vector. (Author)

  3. Biodiesel: its reality and perspectives on national energy policy; O biodiesel: sua realidade e perspectivas diante da politica energetica nacional

    Energy Technology Data Exchange (ETDEWEB)

    Gabbay, Samuel Max; Xavier, Yanko Marcius de Alencar [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2010-07-01

    In the current context, the national energy politics has passed for excellent changes. With the world-wide crisis of the oil in a scarcity perspective and the pressures politics around the global heating, the energy politics has strengthen each time more to promote the use of energies renewed, especially in the automotive sector. This change of position brings new configurations to the national energy matrix and res-position the country as supplying of energy for the world. As it has detached of these politics, are the initiatives of attainment of clean and renewable fuel a matrix from biodiesel. Ahead of this situation, he is objective of the present work to analyze the available mechanisms in the picture of the national energy politics for the introduction of energies you renewed in the fuel sector by means of the program of biodiesel. In this direction, in the first part of the article is analyzed legal aspect that subsidizes the national energy politics and the mechanisms of introduction of energies you renewed in the automotive sector. In the second part the norms are analyzed that configure the national program of biodiesel and its paper in the global set of the component legal measures of the national energy politics. (author)

  4. Energy operation optimization of Rio Paranapanema power plants; Otimizacao da operacao energetica das usinas do Rio Paranapanema

    Energy Technology Data Exchange (ETDEWEB)

    Soares Filho, Secundino; Cicogna, Marcelo Augusto [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Eletrica e Computacao; Carneiro, Adriano Alber de Franca Mendes; Silva Filho, Donato da [Sao Paulo Univ., Sao Carlos, SP (Brazil). Escola de Engenharia; Lopes, Joao Eduardo Goncalves [Sao Paulo Univ., SP (Brazil). Escola Politecnica; Born, Paulo Henrique S.; Chaves, Jose Roberto de A.; Laudanna, Paulo Ricardo [Duke Energy International Geracao Paranapanema, PR (Brazil)

    2000-07-01

    This work presents the developed nonlinear optimization model and verify the results for the hydroelectric power plants cascade on the Paranapanema river. The power plants optimized operation is checked out under the average hydrological conditions and the represented by the known flow history ones.

  5. Solar cooking and wood in Chile, energetical alternatives; Cocina solares y manejo de lena en Chile, alternativas energeticas.

    Energy Technology Data Exchange (ETDEWEB)

    Serrano, R. P.

    2004-07-01

    Firewood in Latin America is, after petroleum, the second primary source of energy. In Chile, the statistics have shown that the total use of energy produce by firewood fluctuates between 16 and 21% from which the residential sector represents 54%. There are great social and environmental impacts produced by the use of firewood. For the near future, it will be difficult to eradicate the firewood consumption in Latin America. In looking for sustainable use of firewood to produce energy, NGOs have developed efficient systems for production, management and consume of it. For this research we will focus on the efficient use of biomass and solar energy use for cooking, both to be applied in suitable places. The paper shows Chilean experiences on both, biomass and solar energy production, and how these programs have impacted the national statistics in energy consumption. (Author)

  6. Energy efficiency policies and climatic change in Brazil; Politicas de eficiencia energetica e mudancas climaticas no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Romeiro, Viviane [Universidade de Sao Paulo (IEE/USP), SP (Brazil). Inst. de Eletrotecnica e Energia], email: viviromeiro@usp.br; Barros, Regiane Silva de [Universidade Estadual de Campinas (FEM/UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Planejamento de Sistemas Energeticos], email: rsbarros@fem.unicamp.br; Simoes, Andre Felipe [Universidade de Sao Paulo (FEM/USP), SP (Brazil). Fac. de Engenharia Mecanica], email: afsimoes@fem.unicamp.br

    2010-07-01

    The rational use of energy, associated with economic development improvement, represents one of the most challenges in the energy planning context. Although the Clean Development Mechanism - CDM has got a relative success by reducing Greenhouse Gases Emissions- GGE, energy efficiency has not been considered yet as a strategic measure for significant investments. This work assumes that an inclusion of programmatic mechanisms, politics and a more comprehensive regulation tools could represent a potential to maximize energy efficiency actions. Methodologically, it was made a bibliographic review from an analytical perspective of energy efficiency politics and specially in the context of the carbon market framework. As a result, it was observed that energy efficiency actions has been gradually inserted in a more comprehensive and programmatic structure attributing more interference from the public sector instead of the private sector (which has been presenting many limitations). (author)

  7. Experience of COPENE in the biomass field as alternative energy; Experiencia da COPENE no campo da biomassa como alternativa energetica

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, B D; Nose, Junior, N; Nardi, L C [COPENE, Camacari, BA (Brazil)

    1985-12-31

    This paper presents the experience of COPENE (Camacari Petrochemical Complex Company) in the substitution of fuel fossil energy by biomass energy to supply the increasing steam demand in its installations. In the middle of 1981, COPENE decided to install a boiler with generating capacity of 400 ton per year. That boiler will burn pulverized wood reducing oil consumption by about 200,000 ton per year. 4 figs., 1 tab.

  8. Study of energy efficiency measures in cement industry; Estudo de medidas de eficiencia energetica na industria de cimento

    Energy Technology Data Exchange (ETDEWEB)

    Sharma, Roberta Ferreira Carrijo; Gorla, Filipe Debonzi [Universidade Estadual de Campinas (UNICAMP), SP (Brazil)

    2008-07-01

    Methods of energy conservation play an important role in the future energetic supply. The cement industry, being energetic intensive, is an important niche of performance of such methods. It is intended, in the present work, to estimate the impact of energy conservation through different scenarios. The projections have been realized considering both the technical (equipment efficiency) and economical (Industrial Transformation Worth - ITW) aspects of the cement sector. (author)

  9. Energy matrix and CO{sub 2} balance; Matriz energetica e balanco de CO{sub 2}

    Energy Technology Data Exchange (ETDEWEB)

    Pessoa, Isac Quintao; Lins, Vanessa; Miranda, Luciano Lellis; Fullin Junior, Benjamin; Fabri, David Fagundes [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Dept. de Engenharia Quimica], e-mails: Isacqp@ufmg.br, vlins@deq.ufmg.br, ll.miranda@uol.com.br, fullinjr@gmail.com, fabri8676@yahoo.com.br

    2012-07-15

    This paper presents the situation of global energy and national energy matrix and the change of a steel company with the substitution of mineral coke by charcoal and liquefied petroleum gas (LPG) to natural gas. In terms of energy efficiency, this paper presents the implementation of various projects for the energy used in the company. The World Steel Association methodology was used to calculate the reductions in CO{sub 2} emissions after the implanting of all projects. (author)

  10. Energetic policy, planning and regulation for isolated systems; Politica energetica, planejamento e regulacao para os sistemas isolados

    Energy Technology Data Exchange (ETDEWEB)

    Frota, Willamy Moreira [Manaus Energia, AM (Brazil); Companhia Energetica do Amazonas (CEAM), Manaus, AM (Brazil); Bajay, Sergio Valdir [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Estudos de Planejamento Energetico

    2004-07-01

    The service to the energy needs of the isolated places and, in matter, of the located ones in the North Area is confronted with a critical situation, that it opposes a structure of electric power supply with costs very superiors to the found in the interlinked systems to consumers' communities with patterns of income in general very inferior in relation to the national average, in many cases returned to extractive activities of small climbs and the a subsistence agriculture, living at places that are, usually, of difficult access. Therefore, the intrinsic characteristics of the isolated systems are the predominance of low load densities and the population dispersion. The regional savings assisted by the isolated systems cross, frequently, situations of deep economical stagnation, associated strongly to the lack of aggregation of value to the regional products. This lowers economical acting, ally to the characteristics of geographical isolation, as well as the lack of adoption of a specific and maintainable energy planning, integrated into programs of regional development are, without a doubt, the largest barriers that commit the viability of a good energy service the these areas (author)

  11. Energy intensities in Mato Grosso state and in meso-regions; Intensidades energeticas nas mesorregioes de Mato Grosso

    Energy Technology Data Exchange (ETDEWEB)

    Canavarros, Otacilio Borges; Melo, Moises Candido de; Dorileo, Ivo Leandro [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil). Nucleo Interdisciplinar de Estudos em Planejamento Energetico (NIEPE)

    2004-07-01

    This work presents some energetic intensities in Mato Grosso state and in each of its five meso-regions that are in the document produced in 2002 by the NIPE/UFMT (Nucleo Interdisciplinar de Estudos em Planejamento Energetico of the Universidade Federal do Mato Grosso) entitled: 'Energetic Balance of the Mato Grosso and meso-regions: period 1995-2001'. (author)

  12. Smart Cities, an Opportunity for Energy Efficiency Companies; Smart Cities, una oportunidad para las empresas de Eficiencia Energetica

    Energy Technology Data Exchange (ETDEWEB)

    Lopez-Nava Munoz, A.

    2016-07-01

    The changing city model towards the Smart City that we will be seeing in the years to come will provide major opportunities to companies that know how to discover new products and services adapted to a new demand, or to companies that are able to position themselves in the sectors with the best growth prospects. We will also witness the disappearance of companies that are not able to adapt to these changes or that react too late. From an energy perspective, this change will necessarily require energy efficiency and the use of renewable energy sources. But what are the products and services that are going to be demanded most in future cities? What materials, technologies or processes will they require? What sectors will have the fastest growth as a result of the development of Smart. (Author)

  13. Energy demand in Mexico, a vision to the future; La demanda energetica en Mexico, una vision al futuro

    Energy Technology Data Exchange (ETDEWEB)

    Esquivel E, J.; Xolocostli M, J. V., E-mail: jaime.esquivel@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2017-09-15

    The energy planning allows to know the current and future energy needs of the country, with the objective of efficiently guaranteeing the supply of energy demand through the diversity of the sources used, promoting the use of clean energies such as nuclear energy. Mexico, by participating in the ARCAL project -Support for the preparation of national energy plans in order to meet energy needs in the countries of the region, making effective use of resources in the medium and long term- has developed the study of energy demand for the period 2015-2050, where, given the socio-economic and technological conditions of the country in 2012, four scenarios are proposed: Decrement al, with decreases in the GDP growth rate and in the production of the manufacturing sector; Incremental, which shows an increase in the GDP growth rate and in the manufacturing sector; Incremental Dual, scenario similar to the Incremental plus an incentive in the service sector and finally, the Tendencial scenario, which corresponds to a typical scenario-business as usual-. The study that concerns this work was developed with the MAED tool and the results that are presented correspond to the energy requirements in each scenario, for the agriculture, construction, mining, manufacturing and transport sectors. (Author)

  14. Potential of energetic utilization of grains residual biomass; Potencial de utilizacao energetica de biomassa residual de graos

    Energy Technology Data Exchange (ETDEWEB)

    Mourad, Anna L. [Instituto de Tecnologia de Alimentos (ITAL), Campinas, SP (Brazil). Centro de Tecnologia de Embalagem], e-mail: anna@ital.sp.gov.br; Ambrogi, Vinicius S.; Guerra, Sinclair M.G. [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica], e-mail: ambrogi@fem.unicamp.br, e-mail: sguerra@fem.unicamp.br

    2004-07-01

    The biomass resulting from the rejected parts of grains, as straw and peel of rice, corn, wheat, soy, all great cultivations in the country, has potential to be takes advantage as energy. It was considered that the contribution of this residual biomass is near of 167,8 million GJ/year, value that could be added to the use already established of the cane bagasse for energy purpose (658 million GJ, in 2001). This energy can be used for drying of these same grains (energy expense estimate of 67 million GJ), currently obtained from oil. It can also substitute the fuel oil used in the agricultural section, in the industries of food and beverage, ceramic and textile (sections that consumed 67.822 GJ in 2001). In Sao Paulo state the regions with greater potential to install biomass plants are located in Assis, Avare and Itapeva EDR (regional development office). (author)

  15. Energy demand in an isolated community: Arixi/AM, Brazil; Demandas energeticas de uma comunidade isolada - Arixi/AM

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Elen Jane de Abreu; Barbosa, Sonia Regina da Cal Seixas [Universidade Estadual de Campinas (FEM/UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Programa de Pos-Graduacao em Planejamento de Sistemas Energeticos], e-mail: srcal@unicamp.br

    2006-07-01

    Isolated energy communities in the Amazon are known by not being integrated to the rest of the net country of generation and distribution of electric energy. Therefore, federal government proposes an equal electric energy distribution for everyone in the country in order to bring social and economic development, mainly to the isolated energy communities. In this context, the isolated Arixi community, a small village in the Amazon, is focus of the project 'Alternative Production Energy from Cell Fuel and Natural Gas in the Amazon State - CELCOMB', a partnership between Federal Amazon University and State University of Campinas, which has the objective of producing alternative energy from cell fuel and natural gas. The objective of this article is to analyze the energy aspects of the isolated community of Arixi in the Amazon, and also get to know its energy demand. To do so, this article is based on a master dissertation and also in community field research. So, despite of the fact that this article is part of a larger project, by analyzing energy data and nowadays demands of the community, we will be able to examine what are the real electric energy requirements of an isolated community in the Amazon. (author)

  16. Energetic policy versus environmental policy: what the missing link?; Politica energetica versus politica ambiental: qual o elo perdido?

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez, Francisco del Moral; Bermann, Celio [Universidadede Sao Paulo (PPGE/IEE/USP), SP (Brazil). Inst. de Eletrotecnica e Energia. Programa de Pos- Graduacao em Energia], emails: fhernandez@usp.br, cbermann@iee.usp.br

    2010-07-01

    The energy and fuel obtaining process must be understand as a political concept and a socially built one. Such a process should be understood taking in account social impacts, environmental issues, land struggles. There are plenty of empirical examples able to identify flows, directions and speedy up enterprises when extracting matter and energy conversion within areas of high social and environmental sensibility. The infra-structure expansion over traditional people areas, high biodiversity mapped regions and environmental sensibility areas are expression of the capital intensive accumulation process and must be legitimated in one way or another. Simultaneously two way processes occur: in one hand the use of land, riverside areas and natural landscapes to generate electrical energy and fuel obtaining an in the other hand the abandon of original usage for the land. Specifically, in the Amazon rain forest area it is evident that the mentioned flows are supported by the natural wealthy. So, the analyses under a scientific approach, elaborating theories, demonstrations and occurrences documentation are necessary. Two preliminary expectations are posted by the article: 1) Discuss the implications due to the creation of energetic reserve areas over traditional people regions; 2) Produce a preliminary picture of demands over natural resources and respective social conflicts based on significant selected cases. (author)

  17. Energy efficiency management in V and M from Brazil; Gestao de eficiencia energetica na V e M do Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Aguiar, Felipe Castilho de Souza; Silva, Camila Soares Lana da; Marques, Sergio Grassi Ferreira [V e M do Brasil S.A., Belo Horizonte, MG (Brazil)

    2010-07-01

    This paper describes the management of the energy efficiency program, created by Vallourec Group in 2009, in V and M do Brazil, aiming to minimize the global warming impacts by reducing the greenhouse gases through the rational consumption of electricity and natural gas. The objective of this program is to reduce 20% of the energy consumption and, consequently, the equivalent CO{sub 2} emissions by 2020. From a centralized energy efficiency management, periodical committees and work groups were created to monitor the indicators and directing actions, generating 25% of the total economy of V and M do Brazil in 2010. (author)

  18. New approaches to energy efficiency programs in the Brazilian industry; Novas abordagens para programas de eficiencia energetica na industria brasileira

    Energy Technology Data Exchange (ETDEWEB)

    Sant' ana, Paulo Henrique de Mello [Universidade Federal do ABC (UFABC), Santo Andre, SP (Brazil). Centro de Engenharia e Ciencias Sociais Aplicadas. Nucleo Interdisciplinar de Planejamento Energetico; Bajay, Sergio Valdir [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Nucleo Interdisciplinar de Planejamento Energetico

    2010-07-01

    A modern approach often used in international literature says that the government has the role to create favorable conditions for improving energy efficiency in industry, either through policies, programs or actions. This article's main objective is to describe the main programs for promoting energy efficiency in industry in Brazil and in other countries, for later to propose a new approach for the management and development of energy efficiency programs for the Brazilian industry. The creation of an executive agency, connected to the MME and with strong ties to ELETROBRAS and PETROBRAS, could manage effectively the enormous resources that are needed to mobilize the energy efficiency programs as real alternatives to programs for additional expansion in energy supply. The creation of energy assessment centers, along with an energy efficiency program for energy-intensive industry, would help in promoting energy efficiency in industry. These actions would likely bounce in other industries, and would assist in achieving optimal management standards in the energy industry, consistent with ISO 9000 and ISO 14000, used in countries like the USA and Sweden. (author)

  19. Status and possibilities for biomedical applications at the Instituto de Pesquisas Energeticas e Nucleares/Sao Paulo-Brazil

    International Nuclear Information System (INIS)

    Mastro, N.L. del.

    1989-02-01

    Radiation applications in the area of biological sciences at our institution aim in the first place at the preservation and improvement of health through the development of research directed to diagnosis and therapeutics. The multiple aspects of biotechnology turn possible also classical and new applications of great importance for the community. The biomedical radiation applications performed particularly at the IPEN are summarized. (author) [pt

  20. The economic crisis and the energy efficiency programs; A crise economica e os programas de eficiencia energetica

    Energy Technology Data Exchange (ETDEWEB)

    Naturesa, Jim Silva; Mariotoni, Carlos Alberto [Universidade Estadual de Campinas (GPESE/FEC/UNICAMP), SP (Brazil). Fac. de Engenharia Civil, Arquitetura e Urbanismo. Grupo de Planejamento Energetico e Sistemas Eletricos; Gomes, Marcio H. de Avelar [Universidade de Brasilia (UnB), Gama, DF (Brazil)

    2010-07-01

    This paper presents some data from the Brazilian economy (2009 and 2010) and their impact on energy efficiency programs. It is also shown the main results of the National Electricity Conservation Program (PROCEL) and PROCEL INFO, which aims to gather and make available information on the rational and efficient use of energy. At the end, we present information showing that MSMEs (Micro, Small and Medium Companies) should be the main focus of the technological innovation programs aimed to energy efficiency. (author)

  1. Measurement and verification of a energy optimization project; Medicao e verificacao de um projeto de otimizacao energetica

    Energy Technology Data Exchange (ETDEWEB)

    Haddad, Jamil; Yamachita, Roberto Akira; Guardia, Eduardo Crestana [Universidade Federal de Itajuba (UNIFEI), MG (Brazil). Centro de Excelencia em Eficiencia Energetica; Cruz, Paulo de Tarso de Alexandria; Porto, Laura Cristina da Fonseca; Leonelli, Paulo Augusto [Ministerio de Minas e Energia (MME), Brasilia, DF (Brazil)

    2008-07-01

    This article presents the results obtained with the execution of a service of energy diagnosis, project and execution of energy modernization of the Municipal Market. During the execution of this project measurements were accomplished before and after the end of the works, this measurement process had as objective the verification of the energy earnings. This project had its beginning in January of 2007 and the end in February of 2008. With the implementation of this project it was obtained a reduction in the electric power consumption, and also, it provided larger safety to the electric operation and the public visitor of the market. This project was accomplished in partnership with the Ministry of Mines and Energy - MME, and it was the first action of practical stamp of the Center of Excellency in Energy Efficiency - EXCEN, of the Federal University of Itajuba - UNIFEI, inaugurated in December of 2006, which has as objective disseminates information on the theme energy efficiency through training, development of researches, projects and methodologies. (author)

  2. The efficiency challenge in the construction sector; El reto de la eficiencia energetica en el sector de la construccion

    Energy Technology Data Exchange (ETDEWEB)

    Pelaez Ramos, M. L.

    2012-07-01

    The construction has an important relative weight in the whole of the Spanish economy, having become more important in the last stage of growth cycle. At present, due to the international financial crisis began in mid-2007, this sector has been seriously affected and at the present time is undergoing a complex situation. This Industrial Observatory highlights the importance of promoting measures to help adapt their activity to the new sustainability criteria. (Author)

  3. Energetic efficiency of the use of desiccant in sugarcane; Eficiencia energetica do uso de dessecante em cana-de-acucar

    Energy Technology Data Exchange (ETDEWEB)

    Cardoso, Gilda B.C.; Ripoli, Tomaz Caetano C.; Romanelli, Thiago L. [Escola Superior de Agricultura Luiz de Queiroz(ESALQ/USP), Piracicaba, SP (Brazil)], E-mail: gildacardoso@usp.br

    2010-07-01

    Economically, sugarcane is one of the most important crop in Brazil, showing a great perspective of expansion in the cultivated area. In the last few years the sugarcane mechanical harvested area has increased, causing a series of inconveniences for the system of harvest of the sugarcane, such as: the increase in the percentage of extraneous matter and losses of sugarcane and/or fractions in the field. Due the high value invested in the system of harvest of the sugarcane, the desiccant is one of the alternatives used to minimize such inconveniences in the pre harvest. In order to quantify the demand of energy of the system, the present work used a base of energy pointers as tool for the planning process and production of sugarcane in two systems, one with application of desiccant (T1) and the other without (T2). The energy flows of entrance (EE) and exit had been established, allowing the identification of the energy rocking (BE), that quantifies the liquid profit of energy for area. The results had shown that the application of the desiccant resulted in a bigger EE in system T1 (86601.44 MJ ha{sup -1} versus 83345.45 MJ ha{sup -1}). The BE of T2 presented superior in 0.14% in relation the T1 (2241318.57 MJ ha{sup -1} against 2238062.57 MJ ha{sup -1}), indicating that the desiccant presents greater energy consumption. (author)

  4. Energy efficiency and urbanism: Guide for urbanism planning energetically efficiency; Eficiencia energetica y urbanismo: Guia del planeamiento urbanistico energeticamente eficiente

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    The present book summarizes the urbanism in the context of energy efficiency. the book has 4 chapters and 3 annexes: The energy in the context of substantiality, the soil planning, recommendations for the urbanism planning with substantiality criteria and small description URBE project.

  5. Energy assessment of nitrogen variable rate fertilization on wheat; Analise energetica da aplicacao de nitrogenio em taxa variavel em trigo

    Energy Technology Data Exchange (ETDEWEB)

    Colaco, A.F.; Karam, E.H.; Romanelli, T.L.; Molin, J.P. [Escola Superior de Agricultura Luiz Queiroz (ESALQ/USP), Piracicaba, SP (Brazil). Dept. de Engenharia de Biossistemas], Email: andrecolaco@usp.br; Povh, F.P. [Fundacao ABC Pesquisa e Desenvolvimento Agropecuario, Castro, PR (Brazil)

    2011-07-01

    Precision Agriculture (PA) is a technique that can reduce the inputs utilization in agriculture production, including the nitrogen fertilizer consume. Great importance is given to this fertilizer, due to its contribution on energy input in agriculture. Methodologies based on the calculation of energy flow of agriculture systems are capable to identify management practices that use energy more efficiently. So, this study's objective is to evaluate the variable-rate nitrogen fertilization on wheat, using energy assessment. This study was carried on in two wheat fields, in which the fertilization was done adopting strips alternated by conventional method (single nitrogen dose) and by nitrogen variable-rate technology. Thus, the input and output energy in the system, energy balance, energy return on investment (EROI) and incorporated energy were determined for each geo-referenced point within the fields. Results showed that less energy was demanded when using variable-rate technology, due to the nitrogen saving, providing greater energy balance, EROI and lower incorporated energy on the areas managed using PA. The energy assessment showed to be an important tool to evaluate systems that use PA, because it is capable of monitoring crops energy potential. (author)

  6. Energy recycling: an innovative solution for unrecyclable plastic; Reciclagem energetica: uma solucao inovadora para o plastico nao reciclavel

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Julyane Carolina; Oliveira, Magno Andre de; Pires, Pedro Henrique; Silva, Thuanye Peixoto; Rodrigues, Marcia [Centro Universitario de Belo Horizonte (UnBH), MG (Brazil)], e-mails: juhlorah@hotmail.com, marromar2004@yahoo.com.br

    2011-07-01

    This paper shows a new technology that is already used in over 35 countries with more than 750 plants in total and is still under study in Brazil: the energy recycling of plastic. Through studies, tables, comparisons and observations, have to analyze the plastic, chemical composition, the steps of material recycling and energy production, the final products obtained by recycling and gases released during the process. Thus, after highlighting how this technology is advantageous, it is expected to awaken to the reflection that it is feasible to use the recycling energy due to its great benefits environmental, social and economic shown the course of research. (author)

  7. Program for the energy efficiency at the Belo Horizonte, Brazil, schools; Programa de eficientizacao energetica nas escolas de Belo Horizonte

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Valeria Romeiro Borges da [Prefeitura de Belo Horizonte, MG (Brazil)]. E-mail: valeria.romeiro@pbh.gov.br; Jota, Patricia Romeiro da Silva [Centro Federal de Educacao Tecnologica de Minas Gerais (CEFET-MG), Belo Horizonte, MG (Brazil). Centro de Pesquisa em Energia Inteligente]. E-mail: prsjota@des.cefetmg.br

    2006-07-01

    The Belo Horizonte City Hall comes promoting works of save energy aiming at to integrate and to take care of the goals of Agenda 21 says respect that it argues subjects related to the ambient questions. One of these works is the implementation of the Efficient Energy in Schools Program - PEE in Schools. The PEE will lead, for the level of basic education, a work co-ordinated for the diffusion of the culture of not wastefulness. The program will use the adopted mechanisms of learning in the schools as tool of diffusion of this culture. The community will be party to suit of save energy in schools and will learn the techniques through an interactive process of theory and practical. This work presents the actions that are being developed and that they will be implemented in short term for the PEE in Schools counting on an innovative methodology that will assist in the evaluation of the results, therefore, will all make possible a accompaniment during the process. (author)

  8. Analytical reasoning for the energetic integration at the South America; Ponderacao analitica para a integracao energetica na America do Sul

    Energy Technology Data Exchange (ETDEWEB)

    Udaeta, Miguel Edgar Morales; Burani, Geraldo Francisco; Faga, Murilo Tadeu Weneck; Oliva, Cidar Ramon Rocha [Universidade de Sao Paulo (USP), SP (Brazil). Inst. de Eletrotecnica e Energia]|[Universidade de Sao Paulo (USP), SP (Brazil). Dept. de Engenharia de Energia e Automacao Eletricas. Grupo de Energia]. E-mail: udaeta@pea.usp.br

    2006-07-01

    This paper intends to show the present program for the energetic integration, formulates the involved countries disposition and analyses the bases for strengthening of the energy relationships across the frontiers. For that purpose, the paper starts from the perception that the present situation of the energy industry of some South American countries shows the context and role of energetic integration. The Argentine established a significant infrastructure for negotiation with their neighbors. Although the integration make possible the access to the scale economies and to share reserves, it is not so clear concerning to the business itself referred to legal questions, the regulation and the long term contracts and that is the point when appears the sovereign barriers and internal priorities, proved by recent cases of the Argentine (lack of natural gas) and Bolivia (surplus of natural gas)

  9. Comparative study of fast T 2-weighted images using respiratory triggered, breath-hold, fat suppression and phased array multi coil for liver evaluation by magnetic resonance imaging; Estudo comparativo das sequencias rapidas ponderadas em T2, utilizando-se sincronizacao respiratoria, apneia, supressao de gordura, bobina de corpo e bobina de sinergia para a avaliacao do figado pela ressonancia magnetica

    Energy Technology Data Exchange (ETDEWEB)

    Abbehusen, Cristiane L.; D' Ippolito, Giuseppe; Palacio, Glaucia A.S.; Szejnfeld, Jacob [Universidade Federal de Sao Paulo (UNIFESP), SP (Brazil). Escola Paulista de Medicina (EPM). Dept. de Diagnostico por Imagem]. E-mail: cabbehusen@hotmail.com

    2003-10-01

    The objective of this study was to compare both qualitatively and quantitatively six T 2-weighted turbo spin-echo sequences varying the respiratory compensation technique, associating or not fat tissue suppression and using different types of coils. We performed a prospective study of 71 consecutive patients that were submitted to MRI of the liver using a 1.5 T magnet. The six following pulse sequences were used: fat-suppressed respiratory triggered with conventional body coil; breath-hold fat-suppressed with conventional body coil; non-suppressed respiratory triggered with conventional body coil; breath-hold non fat-suppressed with conventional body coil; fat-suppressed respiratory triggered with phased-array multi coil; breath-hold fat-suppressed with phased-array multi coil. Images were analyzed quantitatively by measuring the signal-to-noise ratios and qualitatively by evaluating the sharpness of hepatic contours, visibility of intrahepatic vessels and other segmental landmarks, and the presence of artifacts. Results: the qualitative analysis showed that the mean values obtained with the six sequences were 7.8, 4.6, 7.9, 5.2, 6.7 and 4.6 respectively. The respiratory-triggered sequences were better than the breath-hold sequences in both qualitative and quantitative analysis (p < 0.001). No significant differences in the values of signal-to-noise ratios and in overall image quality were found between the sequences with and without fat suppression (p . 0.05). The sequences using the body coil were similar in terms of image quality (p . 0.05) and better regarding signal-to-noise ratios than those obtained with the phased=array multi coil (p ,0.001). Our qualitative and quantitative results suggest that the best MRI sequences for the valuation of the liver are the sequences with respiratory triggering using a conventional body coil, with or without fat suppression. (author)

  10. Evaluation of the levels of Br, Cl, K, Mg, Mn and V in Perna perna mussels (Linnaeus, 1758: Mollusca Bivalvia) collected in the coast of Sao Paulo state, Brazil; Avaliacao dos teores de Br, Cl, K, Mg, Mn e V em mexilhoes Perna perna (Linnaeus, 1758: Mollusca Bivalvia) coletados no litoral do estado de Sao Paulo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Seo, Daniele

    2012-07-01

    The coastal environment has been heavily altered by multiple environmental impacts of human activities, such as disposal of sewage from urban areas, the release of numerous chemical industries, agriculture and the flow of vessels, which can lead to accidental spills of oil and oil products, fuels and other products transported by sea. In this context, a means of determining concentrations of these potentially toxic substances in the sea water is the biomonitoring by means of different types of bivalves, which have been used by various researchers, in Brazil and other countries. With regard to bivalve mollusks, particularly mussels, their use in monitoring the marine contamination is mainly due to their wide geographic distribution, sessile habit and ability to concentrate toxic metals to 102-105 times in relation to the concentrations detected in water. In the present study, we employed the passive biomonitoring using the Perna perna bivalve mollusk with respect to the elements Br, Cl, K, Mg, Mn and V. These elements were chosen since they can be determined by INAA method (Instrumental Neutron Activation Analysis), by means of short irradiation which provides faster analyzes and also due to their importance from the standpoint of environmental or nutritional studies. The aim of this study was to evaluate the content of Br, Cl, K, Mg, Mn and V in samples of Perna perna mussels (Linnaeus, 1758: Mollusca, Bivalvia) collected in coastal regions of Sao Paulo subject to anthropogenic contamination (Ponta de Itaipu and Palmas Island, in Santos), comparing the values obtained in sites potentially impacted with the values of the control site in Praia da Cocanha, in Caraguatatuba. The collection points located in Sao Paulo coast are located in the geographical areas 23 Masculine-Ordinal-Indicator 37'S - 45 Degree-Sign 24' W (Caraguatatuba) and 23 Masculine-Ordinal-Indicator 57'S - 46 Masculine-Ordinal-Indicator 20' W (Santos). The collection of organisms

  11. Evaluation of the levels of Br, Cl, K, Mg, Mn and V in Perna perna mussels (Linnaeus, 1758: Mollusca Bivalvia) collected in the coast of Sao Paulo state, Brazil; Avaliacao dos teores de Br, Cl, K, Mg, Mn e V em mexilhoes Perna perna (Linnaeus, 1758: Mollusca Bivalvia) coletados no litoral do estado de Sao Paulo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Seo, Daniele

    2012-07-01

    The coastal environment has been heavily altered by multiple environmental impacts of human activities, such as disposal of sewage from urban areas, the release of numerous chemical industries, agriculture and the flow of vessels, which can lead to accidental spills of oil and oil products, fuels and other products transported by sea. In this context, a means of determining concentrations of these potentially toxic substances in the sea water is the biomonitoring by means of different types of bivalves, which have been used by various researchers, in Brazil and other countries. With regard to bivalve mollusks, particularly mussels, their use in monitoring the marine contamination is mainly due to their wide geographic distribution, sessile habit and ability to concentrate toxic metals to 102-105 times in relation to the concentrations detected in water. In the present study, we employed the passive biomonitoring using the Perna perna bivalve mollusk with respect to the elements Br, Cl, K, Mg, Mn and V. These elements were chosen since they can be determined by INAA method (Instrumental Neutron Activation Analysis), by means of short irradiation which provides faster analyzes and also due to their importance from the standpoint of environmental or nutritional studies. The aim of this study was to evaluate the content of Br, Cl, K, Mg, Mn and V in samples of Perna perna mussels (Linnaeus, 1758: Mollusca, Bivalvia) collected in coastal regions of Sao Paulo subject to anthropogenic contamination (Ponta de Itaipu and Palmas Island, in Santos), comparing the values obtained in sites potentially impacted with the values of the control site in Praia da Cocanha, in Caraguatatuba. The collection points located in Sao Paulo coast are located in the geographical areas 23 Masculine-Ordinal-Indicator 37'S - 45 Degree-Sign 24' W (Caraguatatuba) and 23 Masculine-Ordinal-Indicator 57'S - 46 Masculine-Ordinal-Indicator 20' W (Santos). The collection of organisms was performed in all

  12. Assessment of micro, macro, toxic elements (Cd, Hg, Pb) and fatty acids profile in consumed fish commercially available in Cananeia and Cubatao, Sao Paulo State; Avaliacao de micro e macroelementos, elementos toxicos (Cd, Hg e Pb) e acidos graxos, em peixes disponiveis comercialmente para consumo em Cananeia e Cubatao, Estado de Sao Paulo

    Energy Technology Data Exchange (ETDEWEB)

    Curcho, Michel Rodrigues da Silva Morales

    2009-07-01

    Aside from their nutritional importance, fish are considered one of the most important bio indicators in aquatic systems for the estimation of pollution levels by toxic metals. This is so, since fish can bio accumulate these elements and they occupy different trophic levels and present different sizes and age. The purpose of the present study was to contribute with important data for the knowledge of nutritional and toxic constituents in muscles of the most consumed fish species from two coastal regions, Cananeia and Cubatao. Cananeia fish species analyzed were: Micropogonias furnieri (Corvina), Macrodon ancylodon (Pescada), Centropomus undecimalis (Robalo peba) and Mugil platanus (Tainha). From Cubatao, Micropogonias furnieri (Corvina), Macrodon ancylodon (Pescada), Menticirrhus americanus (Perna de moca), Sardella braziliensis (Sardinha) and Mugil liza (Tainha). For this study, analytical methodologies were developed and validated, regarding precision and accuracy, by means of certified reference materials. Micronutrients (Ca, Fe, K, Na, Se and Zn) and some trace elements (As, Br, Co, Cr, Rb) in fish muscle were determined by means of neutron activation analysis (NAA). Cold Vapor Atomic Absorption Spectrometry (CV AAS) was used for total Hg determination and Electrothermal Atomic Absorption Spectrometry (ET AAS) for Cd and Pb determinations. Proximate composition determinations according to AOAC methodologies and fatty acids profiles by gas chromatography were done in these muscle fish samples. Regarding fatty acids profile from the {omega}-6 family, Tainha species pool presented the highest values (8.9%) and Pescada species pool the lowest ones (4.4%) for Cananeia species. Fatty acids from the {omega}-3 family, Sardinha pool species presented the highest values (31.8%) for all species analyzed. Regarding micronutrients content great concentration variations between individual of the same species and between different species were observed. Discriminate analysis

  13. Analysis of the specific consumption of energy and of carbon specific emissions of the mexican Iron and steel industry; Analisis del consumo especifico de energia y de las emisiones especificas de carbono de la industria siderurgica mexicana

    Energy Technology Data Exchange (ETDEWEB)

    Ozawa, L; Sheinbaum, C [Instituto de Ingenieria de la UNAM, Mexico, D. F. (Mexico)

    1999-07-01

    From 1970 to 1995, the specific consumption of energy of the Mexican iron and steel industry diminished in 16.2%, and the specific carbon emissions in 21.8%. In order to analyze the factors that favored these diminutions, the specific energy consumption in structural changes and improvements in energy efficiency were segregated; whereas the specific carbon emissions were segregated in structural changes, improvements of energy efficiency, changes in the factors of carbon emissions and in the fuel mixture in the iron and steel industry as well as in the electricity generation. It was observed that the diminution in the specific consumption as well as in the specific carbon emissions were mainly due to technological improvements in the manufacture of the steel: the complete substitution of the open hearth furnaces and a comprehensive penetration of the continuous casting. In spite of these improvements in energy efficiency and to the gradual substitution of coke by natural gas when increasing the production of iron by direct reduction. Though, the emission factor of the electricity was increased due to a greater participation of the fossil plants in 1995 in comparison with 1970. The indicators of energy efficiency of this industry with other countries were compared taking into account their own structure. Finally recommendations are made of measures for energy saving. [Spanish] De 1970 a 1995, el consumo especifico de energia de la industria siderurgica mexicana disminuyo en un 16.2%, y las emisiones especificas de carbono en un 21.8%. Para analizar los factores que favorecieron dichas disminuciones, se desagrego el consumo especifico de energia en cambios estructurales y en mejoras de eficiencia energetica; mientras que las emisiones especificas de carbono se desagregaron en cambios estructurales, mejoras de eficiencia energetica, cambios en los factores de emision de carbono y en la mezcla de combustibles tanto de la industria siderurgica como en la generacion de

  14. Establishment and prioritization of relevant factors to the safety of fuel cycle facilities non reactor through dynamics archetypes evaluation; Estabelecimento e priorizacao de fatores relevantes para a seguranca de instalacoes do ciclo do combustivel exceto o reator atraves da avaliacao da dinamica de arquetipos

    Energy Technology Data Exchange (ETDEWEB)

    Sousa, Anna Leticia Barbosa de

    2012-07-01

    The present work aims to establish and prioritize factors that are important to the safety of nuclear fuel cycle facilities in order to model, analyze and design safety as a physical system, employing systemic models in an innovative way. This work takes into consideration the fact that models that use adaptations of methodologies for nuclear reactors will not properly work due to the specificities of fuel cycle facilities. Based on the fundamentals of the theory of systems, the four levels of system thinking, and the relationship of eight socio technical factors, a mental model has been developed for safety management in the nuclear fuel cycle context. From this conceptual model, safety archetypes were constructed in order to identify and highlight the processes of change and decision making that allow the system to migrate to a state of loss of safety. After that, stock and flow diagrams were created so that their behavior could be assessed by the system's dynamics. The results from the analysis using the model that simulates the dynamic behavior of the variables (socio technical factors) indicated, as expected, that the system's dynamics proved to be an appropriate and efficient tool for modeling fuel cycle safety as an emergent property. (author)

  15. Distribution of K, eU and Th and evaluation of annual radiation dose in the region of the Serra do Carambei Granite - PR; Distribuicao de K, eU e eTh e avaliacao da dose anual de radiacao na regiao do Granito Serra do Carambei - PR

    Energy Technology Data Exchange (ETDEWEB)

    Godoy, Luiz C., E-mail: luizcgodoy@brturbo.com.br [Departamento de Geociencias, Universidade Estadual de Ponta Grossa, PR (Brazil); Bittencourt, Andre V.L., E-mail: andre@ufpr.br [Laboratorio de Pesquisas Hidrogeologicas - LPH, Departamento de Geologia, Universidade Federal do Parana, Centro Politecnico, Curitiba, PR (Brazil); Santos, Leonardo J.C., E-mail: santos@ufpr.br [Laboratorio de Biogeografia e Solos - LABS, Departamento de Geografia, Universidade Federal do Parana, Centro Politecnico, Curitiba, PR (Brazil); Ferreira, Francisco J.F., E-mail: francisco.ferreira@ufpr.br [Laboratorio de Pesquisas em Geofisica Aplicada - LPGA, Departamento de Geologia, Universidade Federal do Parana, Centro Politecnico, Curitiba, PR (Brazil)

    2011-04-15

    is study was conducted in an area of 14 km in length oriented in the NNE direction by 7.3 km wide, covering the totality of the Serra do Carambei Granite and adjacent units. Located in the northern region of the Alagados dam, Parana State, this granite contains relatively high concentrations of K, eU and eTh, known since the 1970s through airborne and terrestrial gamma-ray spectrometry surveys. Recent radiochemical tests conducted on 61 samples of geological materials such as rocks (17 samples) and material of the weathering mantle and alluvial deposits (44 samples), confirmed the occurrence of radioactive anomalies in this granite, especially in thorium and uranium. The contents of K, eU and eTh obtained in gamma-ray spectrometry survey and radiochemical tests, converted to annual radiation dose (ARD), allowed to evaluate the intensity of natural radiation, whose levels relatively high in certain regions of the study area, can offer hazard to the local populations. The analysis and interpretation of data, as well the preparation of contour maps of K, eU and eTh were fundamental to understand the behavior and mobility of radionuclides in different environmental compartments of the area. (author)

  16. System precision assessment ExacTrac 6D® BrainLab of the Hospital das Clinicas da Faculdade de Medicina da USP; Avaliacao da precisao do sistema Exactrac 6D® BrainLab do Hospital das Clinicas da Faculdade de Medicina da USP

    Energy Technology Data Exchange (ETDEWEB)

    Maistro, Carlos E.B., E-mail: carloseduardo.bravinmaistro@gmail.com [Programa de Residencia Multiprofissional em Fisica Medica, Faculdade de Medicina de Sao Paulo, SP (Brazil); Nakandakari, Marcos V.N.; Ribeiro, Victor A.B.; Sales, Camila P. de; Rodrigues, Laura N. [Universidade de Sao Paulo (USP), SP (Brazil). Instituto de Radiologia. Servico de Radioterapia. Hospital das Clinicas

    2015-08-15

    The goal of this study was to evaluate the precision of ExacTrac 6D® Brainlab system, installed at Hospital das Clinicas da Faculdade de Medicina da USP, in frameless radiosurgery treatments. Four sets of tests were performed for different purposes in order to assess the following parameters: the accuracy of location through infrared system; evaluation of the reproducibility of fusion algorithm; evaluation of the X-ray system; and the end-to-end test with the goal of assess the overall accuracy of the system. It was found that the infrared system showed a maximum deviation of 0.5 mm in terms of positioning and the X-ray system showed a precision of 0.15 mm and 0.6°. The reproducibility of fusion algorithms provided a maximum deviation in position which was less than 0.5 mm and 0.5° and the quantitative analysis of the results for end-to-end test showed an overall accuracy of the system better than 0.8 mm. (author)

  17. Evaluation and characterization of ceramic membranes based on Pdms/SiC containing phosphotungstic acid as electrolytes for PEM-FC; Avaliacao e caracterizacao de membranas ceramicas condutoras a base de PDMS/SiC contendo acido fosfotungstico como eletrolito para PEM-FC

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Marcelo de Oliveira; Guimaraes, Danilo Hansen; Boaventura Filho, Jaime Soares; Jose, Nadia Mamede [Universidade Federal da Bahia (IQ/UFBA), Salvador, BA (Brazil). Inst. de Quimica. Grupo de Energia e Ciencias dos Materiais; Barbosa, Diego Augusto Batista; Paschoal, Carlos William de Araujo [Universidade Federal do Maranhao (DF/UFMA), Sao Luis, MA (Brazil). Dept. de Fisica; Almeida, Rafael Mendonca; Tanaka, Auro Atsushi [Universidade Federal do Maranhao (DQ/UFMA), Sao Luis, MA (Brazil). Dept. de Quimica

    2009-07-01

    This work presents the development of membranes with potential use in Proton Exchange Fuel Cells (PEM-FC), consisting of hybrid materials based on poly(dimethylsiloxane), crosslinked with tetraethyl orthosilicate (TEOS), and reinforced with silicon carbide and phosphotungstic acid. The membrane series PDMS/TEOS/SiC/PWA were prepared by the reaction of PDMS and TEOS, 70/30% proportions in mass, catalyzed by dibutyltin dilaurate. SiC was incorporated in a 25% proportion, and PWA in varied proportions (5, 10, 15 and 20%), by weight. The membranes were characterized by Thermo-Gravimetric Analysis (TGA), X-ray Diffraction, Scanning Electron Microscopy and impedance spectroscopy. SiC and PWA addition to the membrane increased both structure organization and material crystallinity. The insertion of PWA provided an increase in the conductivity. However, maximum conductivity was obtained with concentration levels above 10%. The insertion of SiC associated with the PWA did not influence the conductivity for concentrations between 10 and 20%. (author)

  18. Ionizing radiation from {sup 60}Co and electron accelerator in reducing the population of Salmonella sp. inoculated in chicken meatballs: evaluation of acceptance by consumer;Radiacoes ionizantes provenientes de {sup 60}CO e acelerador de eletrons na reducao da populacao de Salmonella sp. inoculada em almondegas de frango: avaliacao da aceitacao do produto pelo consumidor

    Energy Technology Data Exchange (ETDEWEB)

    Saito, Juliana

    2003-07-01

    Salmonella sp. is one of the main microorganisms that causes outbreaks of food borne diseases associated to poultry, and among its derivatives, the chicken meatballs are getting the favorites of the consumer. In the attempt to improve microbiological food safety, a method that has been hardly studied is the irradiation. To study the viability of the use o ionizing radiation originated from {sup 60} Co and electrons accelerator in the reduction of Salmonella sp., frozen chickens meatballs were inoculated with 10{sup 4} CFU/g of Salmonella sp., with needle and syringe. Subsequently they were exposure to doses of 1.5, 2.0, 2.5 and 3.0 kGy and Salmonella sp. was enumerated. Chicken meatballs were exposed to doses 3.0, 4.0 and 5.0 kGy and submitted to sensory analysis. The gamma radiation from {sup 60}CO was effective in the reduction of Salmonella sp. inoculated in chicken meatballs. The ionizing radiation originated from electron beam was not effective in the conditions applied in this research. The commercial chicken meatballs prepared with chicken meat, mixed up with soy protein, seasoning and anti-oxidants additives did not loose their sensorial quality when exposure to doses of 3.0, 4.0 and 5.0 kGy and, in a general way, the consumers showed to be disposed to buy the irradiation product (author)

  19. Morphological evaluation of cavity preparation surface after duraphat and Er:YAG laser treatment by scanning electronic microscopy; Avaliacao das alteracoes morfologicas da superficie do preparo cavitario apos condicionamento com verniz fluoretado a 2,26 % e laser de Er:YAG atraves de microscopia eletronica de varredura

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, Luciane Borelli

    2002-07-01

    The treatment of dental surface using different lasers to prevent dental caries has been studied for several on last years. The purpose of this in vitro study was to evaluate the morphological changes on dentin surface from pulpal wall of cavity preparations performed by high-speed drill, treated with 2,26% fluoride varnish (Duraphat) and Er:YAG laser, and then submitted after receiving or not to EDTA 15% treatment. Twenty Class V cavities were performed on ten humans molars. The specimens were randomly divided in to 4 groups: group 1- treatment with Duraphat followed by Er:YAG laser irradiation (120 mJ/ 4 Hz); group 2: Er:YAG laser irradiation, same parameters, followed by Duraphat treatment; group 3- same group 1 followed by immersion in EDTA (5 min); group 4 - same as group 2 followed by immersion in EDTA (5 min). The specimens were processed for SEM analysis. The micrographs showed that Duraphat treatment promoted morphological changes on dentin, closing dentinal tubules; the specimens treated by Duraphat and Er:YAG laser and immersed in EDTA (group 3) showed homogeneous surface, closed and protected dentinal tubules, maintenance of the fluoride varnish on the dentin surface and around the dentinal tubules, showing feasible and efficiency of these therapies the feasibility.(author)

  20. Evaluation of the metal contamination associated to the leachate in the Chururupe-Ilheus (Bahia State, Brazil) river by using INAA and ICP-MS; Avaliacao da contaminacao por metais associada ao despejo de chorume no rio Cururupe-Ilheus-BA utilizando INAA e ICP-MS

    Energy Technology Data Exchange (ETDEWEB)

    Dalmazio, Ilza; Oliveira, Arno Heeren de [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Dept. de Engenharia Nuclear; Menezes, Maria Angela de B.C. [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, MG (Brazil). Lab. de Radioquimica; Silva, Mario R. de S.; Vasconcelos, Danilo C.; Santos, Balbino L. dos [Universidade Estadual de Santa Cruz, Ilheus, BA (Brazil). Dept. de Ciencias Biologicas

    2002-07-01

    The site of this research is in Ilheus city located at Bahia State in Brazil. Residues generated by the urban activities from this city are collected and disposed at a place without sanitary control called ' Lixao do Cururupe' close to Cururupe river. The leachate from the water drainage through the mass of garbage flows into the river. This solution is rich in organic and inorganic pollutants. There is not any information about the environmental impact caused by this dump. The objective of this study is to evaluate the contamination caused by metals due to the presence of leachate into Rio Cururupe. Water, sediment and crustaceans (Ucides cordatus) samples were collected in different points considering the dump location. Extra samples were also taken in Rio Acuipe 20 km from Rio Cururupe for comparison. After appropriate treatment the samples were analyzed using the technique Instrumental Neutron Activation Analysis (INAA) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The parameters pH, temperature, conductivity, dissolved oxygen and Biochemistry Oxygen Demand from the water samples were also determined. (author)

  1. Surface morphological changes on the human dental enamel and cement after the Er:YAG laser irradiation at different incidence angles; Avaliacao morfologica das superficies do esmalte e do cimento dental apos a irradiacao do laser de Er:YAG em diferentes angulacoes

    Energy Technology Data Exchange (ETDEWEB)

    Tannous, Jose Trancoso

    2001-07-01

    This is a morphological analysis study through SEM of the differences of the laser tissue interaction as a function of the laser beam irradiation angle, under different parameters of energy. Fourteen freshly extracted molars stored in a 0,9% sodium chloride solution were divided in seven pairs and were irradiated with 100, 200, 300, 400, 500, 600 and 700 mJ per pulse, respectively. Each sample received three enamel irradiations and three cement irradiations, either in the punctual or in the contact mode, one near to the other, with respectively 30, 45 and 90 inclinations degrees of dental surface-laser-beam incidence. Four Er:YAG pulses (2,94 {mu}m, 7-20 Hz, 0,1-1 J energy/pulse - Opus 20 - Opus Dent) with water cooling system (0,4 ml/s) were applied. After the laser irradiation the specimens were analysed through scanning electron microscope (SEM). The results were analysed by SEM micrographs showing a great difference on the laser tissue interaction characteristics as a function of the irradiation angle of the laser beam. All the observations led to conclude that, considering the laser parameters used, the incidence angle variation is a very important parameter regarding the desired morphological effects. This represents an extremely relevant detail on the technical description of the Er:YAG laser irradiation protocols on dental tissues. (author)

  2. Evaluation of the urea content in the synthesis by combustion reaction of the NiAl{sub 2}O{sub 4} catalysts; Avaliacao do teor de ureia na sintese por reacao de combustao do catalisador NiAl{sub 2}O{sub 4}

    Energy Technology Data Exchange (ETDEWEB)

    Leal, E.; Sousa, J.-P.L.M.L.; Costa, A.C.F.M.; Gama, L. [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Unidade Academica de Engenharia de Materiais; Argolo, F. [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Inst. de Quimica; Sasaki, J.M. [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil). Dept. de Fisica

    2009-07-01

    The aim of this work is to evaluate the influence of the urea fuel in the structure and morphology of the NiAl{sub 2}O{sub 4} prepared by combustion reaction. The powders were prepared according to the propellants and explosives theory, using urea in the stoichiometric composition, with 10% of excess and deficiency of this fuel. The samples were characterized by XRD, FTIR, particle size distribution and textural analysis by nitrogen adsorption (BET/BJH). The DRX results showed the presence of NiAl{sub 2}O{sub 4} as major phase and traces of NiO for all the samples. Also show crystallites size between 13 and 21 nm. All the samples showed large agglomerates size distribution, with D{sub 50%} between 18.6 and 20.4 {mu}m, and morphology with irregular plates shape. The increase of the urea content caused an increase in the particle size and a reduction in the surface area, from 270 to 52 m{sup 2}/g. (author)

  3. Scanning electron microscopy evaluation of the interaction pattern between dentin and resin after cavity preparation using Er:YAG laser; Avaliacao, atraves de microscopia eletronica de varredura, do padrao de interacao dentina-resina em cavidades preparadas com laser de Er:YAG

    Energy Technology Data Exchange (ETDEWEB)

    Schein, Marcelo Thome

    2001-07-01

    The aim of this study was to describe the interaction pattern formed between dentin and resin on cavities prepared with an erbium laser (Er:YAG). The morphological aspect of the irradiated dentin after acid etching was also observed. Ten dentin disks were obtained from fresh extracted third molars. Each disk received two cavities, one prepared with a conventional high-speed drill, while the other cavity was obtained by the use of an Er:YAG laser (KaVo KEY Laser, KaVo Co.). The laser treatment was performed with 250 mJ/pulse, 4 Hz, non contact mode, focused beam, and a fine water mist was used. Five disks were prepared for morphological analysis of the acid etched dentin. The other five disks had their cavities restored with Single Bond (3M) followed by Z100 resin (3M). The specimens were observed under scanning electron microscopy after dentin-resin interface demineralization and deproteinization. It was observed that the morphological characteristics of the acid-etched irradiated dentin were not favorable to the diffusion of monomers through the collagen network. The dentin resin interfacial aspect of irradiated dentin, after acid etching, showed thin tags and scarce hybridization zones, which agreed with the morphology of the irradiated and acid-etched dentin substrate observed. (author)

  4. Assessment of the advanced oxidation process , photo-fenton, on the degradation of polyaromatics hydrocarbons contained on the aqueous part of oil in superficial sea water; Avaliacao do processo oxidativo avancado, foto-fenton, na degradacao dos hidrocarbonetos poliaromaticos contidos na fracao soluvel do petroleo em agua superficial salina

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Rita C.R. da; Silva, Valdinete L. da; Paim, Ana Paula Silveira [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil); Rocha, Otidene R.S. da; Duarte, Marcia M.L. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2008-07-01

    The pollution for oil has been one of the main ambient problems of the last decades. It exists an increasing interest in the study of the destination and forms of disappearance of the constituent hydrocarbons of the oil aiming at the development of more efficient methods of removal of the same ones of the environment. With objective to evaluate the process photo-fenton, in the treatment of the contaminated saline superficial water with polyaromatics hydrocarbons (HPAs) contained in the crude oil, mounted an experiment using reactor of black light, the hydrogen peroxide as oxidant agent. After the degradation the samples had been submitted to the analysis in the GC-MS, and for the 31 specters it was observed that the best ones resulted had been gotten when mmol of H{sub 2}O{sub 2} in 8 was used h of exposition to the irradiation and with pH of the equal system the 4. In the specter of this assay the characteristic peaks of the HPAs disappear completely or appear in a lowly intensities, proving that it had rupture of aromatical rings consequently and the degradation of the same ones or that its concentrations meet below of the limit of detention of the equipment. Soon, with the gotten results it can be concluded that the POAs, in special the process photo-fenton, is presented as a viable alternative in the contaminated saline superficial water treatment with the HPAs contained in the rude oil. (author)

  5. Evaluation of agreement between transvaginal ultrasonography and magnetic resonance imaging of the pelvis in deep endometriosis with emphasis on intestinal involvement; Avaliacao da concordancia entre a ultrassonografia transvaginal e a ressonancia magnetica da pelve na endometriose profunda, com enfase para o comprometimento intestinal

    Energy Technology Data Exchange (ETDEWEB)

    Cardoso, Maene Marcondes; Coutinho Juni