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Sample records for avaliacao da influencia

  1. Evaluation of radiolabeling of annexin A5 with technetium-99m: influence of the labeling methods on physico-chemical and biological properties of the compounds; Avaliacao da radiomarcacao da anexina A5 com tecnecio-99m: influencia do metodo de marcacao nas propriedades fisico-quimicas e biologicas do composto

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Josefina da Silva

    2009-07-01

    Annexin A5 (ANXA5) is an intracellular human protein of 36 kDa with high affinity for membrane-bound phosphatidylserine that is selectively exposed on the surface of cells undergoing apoptosis. Apoptosis is important in normal physiology and innumerous pathologic states. Clinical applications for ANXA5 imaging are being developed in oncology, organ transplantation and cardiovascular diseases. Many strategies to radiolabel the protein have been described, including direct labeling, derivatization through a bifunctional chelating agent (BFC), production of mutated protein or peptide analogs. Several {sup 99}mTc-labeling techniques have been reported using different cores, including [Tc=O]{sup +3}, [Tc]HYNIC, [Tc{identical_to}N]+2 and [Tc(CO{sub 3})]{sup +1}. In this study, we evaluated the influence of {sup 99}mTc cores on biological behavior and physico-chemical properties of radiolabeled annexin. Radiolabeling procedure using [Tc{identical_to}N]{sup +2} core was a two-step procedure including the reaction of {sup 99}mTcO4 - with SDH in the presence of SnCl{sub 2} and PDTA to obtain the intermediate {sup 99}mTcN-SDH, and successive addition of ANXA5. The results obtained were not satisfactory, despite the high efficiency in the production of the intermediate. The [Tc=O]{sup +3} core was produced using the ethylene dicysteine (EC) as BFC. TSTU was employed in the derivatization to produce the corresponding hydroxysuccinimide ester. Different ANXA5:EC ratios were studied and all labeling conditions resulted in high radiochemical yield but with differences in lipophilicity, stability, biological distribution and affinity for apoptotic cells. The HYNIC-ANXA5 also produced the labeled protein with high radiochemical yield. The stability of the radiolabeled ANXA5 was evaluated after storing at room temperature, at 2 - 8 degree C and in human serum at 37 degree C. The analysis of these results showed that the {sup 99}mTc-EC-ANXA5 (ratio 10-2) was the most stable compound

  2. Instrumentos em Lingua Brasileira de Sinais para avaliacao da qualidade de vida da populacao surda

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    Neuma Chaveiro

    2013-06-01

    Full Text Available OBJETIVO: Construir a versão em Língua Brasileira de Sinais dos instrumentos WHOQOL-BREF e WHOQOL-DIS para avaliar a qualidade de vida da população surda brasileira. MÉTODOS: Utilizou-se metodologia proposta pela Organização Mundial da Saúde (WHOQOL-BREF e WHOQOL-DIS para a construção dos instrumentos adaptados para população surda em Língua Brasileira de Sinais (Libras. A pesquisa para execução do instrumento consistiu de 13 etapas: 1 criação do sinal qualidade de vida; 2 desenvolvimento das escalas de respostas em Libras; 3 tradução por um grupo bilíngue; 4 versão reconciliadora; 5 primeira retrotradução; 6 produção da versão em Libras a ser disponibilizada aos grupos focais; 7 realização dos grupos focais; 8 revisão por um grupo monolíngue; 9 revisão pelo grupo bilíngue; 10 análise sintática/semântica e segunda retrotradução; 11 reavaliação da retrotradução pelo grupo bilíngue; 12 filmagem da versão para o software; 13 desenvolvimento do software WHOQOL-BREF e WHOQOL-DIS em Libras. RESULTADOS: Características peculiares da cultura da população surda apontaram a necessidade de adaptações na metodologia de aplicação de grupos focais quando compostos por pessoas surdas. As convenções ortográficas da escrita das línguas sinalizadas não estão consolidadas, o que trouxe dificuldades em registrar graficamente as etapas de tradução. As estruturas linguísticas que causaram maiores problemas de tradução foram as que incluíram expressões idiomáticas do português, muitas sem conceitos equivalentes entre o português e a Libras. Foi possível construir um software do WHOQOL-BREF e WHOQOL-DIS em Libras. CONCLUSÕES: O WHOQOL-BREF e o WHOQOL-DIS em Libras possibilitarão que os surdos se expressem autonomamente quanto a sua qualidade de vida, o que permitirá investigar com maior precisão essas questões.

  3. Avaliacao da Relacao entre a Doenca Hepatica Nao Gordurosa e CAD utilizando TCMF

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    Duran Efe

    2014-01-01

    Full Text Available Fundamento: Alguns fatores de risco para a aterosclerose são acompanhados pela doença hepática gordurosa não alcoólica (DHGNA. Desejamos usar a tomografia computadorizada multi-fatias (TCMF como a técnica para encontrar relação entre a DHGNA e a doença arterial coronariana (DAC. Objetivo: A relação entre a DHGNA e a DAC foi investigada através de TCMF. Métodos: Um total de 372 indivíduos com ou sem sintomas cardíacos, que foram submetidos à angiografia por TCMF, foram incluídos no estudo. Os pacientes foram divididos em dois grupos, de acordo com a presença da DHGNA. Os segmentos arteriais coronarianos foram avaliados visualmente via angiografia por TCMF. Com base no grau de estenose arterial coronariana, aqueles com placas ausentes ou mínimas foram considerados como normais, enquanto aqueles que apresentavam estenose de menos do que 50% e no mínimo uma placa foram considerados como portadores da doença arterial coronariana não obstrutiva (não-obsDAC. Os pacientes que apresentaram no mínimo uma placa e estenose arterial coronariana de 50% ou mais foram considerados como portadores de doença arterial coronariana obstrutiva (obsDAC. A DHGNA foi determinada de acordo com o protocolo de TCMF, utilizando a densidade hepática. Resultados: De acordo com a densidade hepática, o número de pacientes com doença hepática gordurosa não alcoólica (grupo 1 foi de 204 (149 homens, 54,8% e com fígado normal (grupos 2 foi de 168 (95 homens, 45.2%. Houve 50 (24,5% não-obsDAC e 57 (27,9% casos de obsDAC no Grupo 1, e 39 (23,2% não-obsDAC e 23 (13,7% casos de obsDAC no Grupo 2. Conclusões: O presente estudo utilizando TCMF demonstrou que a frequência da doença arterial coronariana em pacientes com NAFDL foi significativamente superior do que nos pacientes em NAFDL.

  4. Avaliacao da seguranca de diferentes doses de suplementos de acido folico em mulheres do Brasil

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    Quenia dos Santos

    2013-10-01

    Full Text Available OBJETIVO Avaliar a distribuição da ingestão de ácido fólico e a segurança de diferentes doses de suplementos em mulheres em idade reprodutiva. MÉTODOS Foram utilizados dados de consumo a partir de dois dias não consecutivos de registro alimentar de 6.837 mulheres em idade reprodutiva (19 a 40 anos participantes do Inquérito Nacional de Alimentação, módulo da Pesquisa de Orçamentos Familiares 2008-2009. Médias e percentis de consumo habitual de folato natural e ácido fólico foram estimados utilizando o método do National Cancer Institute . Cinco cenários foram simulados somando-se diferentes doses diárias de fortificação (400 mcg, 500 mcg, 600 mcg, 700 mcg e 800 mcg ao ácido fólico oriundo dos alimentos consumidos pelas mulheres. Comparou-se o total de ácido fólico (dieta + suplemento com o nível máximo de ingestão tolerável (UL = 1.000 mcg para definir a dose segura de suplementação. RESULTADOS Mulheres com ingestão habitual de ácido fólico acima do nível máximo de ingestão tolerável foram observadas para doses de suplemento de 800 mcg (7,0% das mulheres. Abaixo desse valor, qualquer dose de suplementação mostrou-se segura. CONCLUSÕES O uso de suplementos de até 700 mcg de ácido fólico mostrou-se seguro.

  5. Modelo de acelraçao de tecnologia (tam): um estudo da influencia da cultura nacional e do perfil do usuario no uso das tic

    OpenAIRE

    Yong Varela, Luis Antonio; Rivas Tovar, Luis Arturo; Chaparro, Julian

    2012-01-01

    O propósito do estudo foi estudar a influencia da cultura nacional no usuarios no uso das Tecnologias de informaçao e Comunicaçoes (TIC) na Universidad Autonoma de Tamaulipas (UAT). através do Modelo de Aceitaçao de Tecnologia (TAM) de (Davis, 1989) Este modelo mede duas variaveis principais a Utilidade Perceivida (Perceived Usefulness) e a Facilidade de Uso Percebida (Perceived Ease of Use) Foram aplicados 337 questionarios para Docentes/Dirigentes e 398 questionarios para Alunos, nas 23 Esc...

  6. Influencia da organizacao da atencao basica e das caracteristicas sociodemograficas da populacao na demanda pelo pronto atendimento odontologico municipal

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    Dirce Aparecida Valerio da Fonseca

    2014-01-01

    Full Text Available O objetivo deste estudo foi avaliar a influência dos determinantes sociais e da oferta de serviços na atenção primária em relação à utilização de um serviço de pronto atendimento odontológico em município de médio porte. Foram utilizados para a análise dados de registros de 57.231 usuários do pronto atendimento, período de 2007 a 2009, segundo idade, sexo, data e período do atendimento, índice de exclusão social do bairro de residência e existência de equipe de saúde bucal de referência. Verificou-se que, em média/ano, 5,24% da população utilizou o serviço no período estudado, com maior procura na faixa etária de 20 a 49 anos (63,84% e equilíbrio entre os sexos. Os procedimentos mais executados foram os cirúrgicos (54,9% com tendência ao aumento dos procedimentos restauradores (62,8%. Os usuários residentes em áreas de maior exclusão social apresentaram 4,15 vezes mais chance de procurar pelo serviço (p < 0,05. Não foi observada associação estatisticamente significativa entre procura pelo pronto atendimento, sexo e a existência de equipe de saúde bucal na área de residência. Concluiu-se que houve uma maior utilização pelo serviço de urgência odontológico municipal por indivíduos provenientes de áreas mais vulneráveis, demonstrando a importância do mesmo na diminuição das iniquidades em saúde bucal.

  7. Leitura rapida do KDIGO 2012: Diretrizes para avaliacao e manuseio da doenca renal cronica na pratica clinica

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    Gianna Mastroianni Kirsztajn

    2014-03-01

    Full Text Available Os autores desta "leitura rápida" apresentam os dados que consideraram mais relevantes na versão 2012 do KDIGO referente à avaliação e manuseio da doença renal crônica. Não se trata da opinião dos autores, mas sim de uma apresentação mais concisa das diretrizes, que podem ser úteis na prática clínica.

  8. Avaliacao da espessura medio-intimal em pacientes com doenca renal cronica nao dialitica: estudo prospectivo de 24 meses

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    Andrea Gaspar Marcos

    2014-03-01

    Full Text Available Introdução: O aumento da espessura média-intimal (EMI avaliada por ultrassom é um preditor de risco cardiovascular na população geral. Porém, em pacientes com doença renal crônica nos estágios iniciais, essa associação ainda não está bem estabelecida. Objetivo: Avaliar a associação EMI com a ocorrência de eventos cardiovasculares e mortalidade em pacientes nos estágios iniciais da doença renal crônica. Métodos: A análise post hoc de uma coorte de pacientes nos estágios 2-4 da DRC. Foram avaliados dados laboratoriais, ultrassom da artéria carótida e tomografia coronariana no início do estudo e a ocorrência de óbito, em seguimento por 24 meses. Resultados: Um total de 117 pacientes (57 ± 11 anos, 61% sexo masculino foram avaliados. A taxa de filtração glomerular foi 36 ± 17 mL/min, 96% dos pacientes eram hipertensos, 23% diabéticos e 27% obesos. Calcificação arterial coronariana esteve presente em 48% dos pacientes, sendo mais prevalente em pacientes nos estágios mais avançados da DRC (p = 0,02. EMI foi 0,6 mm (0,4-0,7 mm. Comparado aos pacientes com EMI < 0,6mm, aqueles com EMI ≥ 0,6 mm eram mais velhos (p = 0,001, apresentavam maior prevalência do sexo masculino (p = 0,001, menor taxa de filtração glomerular (p = 0,01 e maior proporção de pacientes com calcificação (p = 0,001. Não foi observada relação entre a espessura média-intimal e a ocorrência de evento cardiovascular e óbito. Conclusão: A espessura médio-intimal em pacientes DRC se associou à calcificação coronariana, mas não à ocorrência de eventos cardiovasculares e óbito, em um seguimento de 24 meses.

  9. Paridade: influencia na qualidade de vida da grávida

    OpenAIRE

    Azevedo, Ana; Gomes, Maria José; Galvão, Ana Maria

    2014-01-01

    A gravidez é uma etapa comum na vida reprodutiva da mulher à qual se tem dedicado pouca atenção. As modificações normais percebidas pela grávida nos domínios, físico e psicológico e a sua influência na qualidade de vida, têm sido pouco exploradas. A influência da paridade na qualidade de vida constitui se também um assunto do qual há poucas evidências, motivo que nos suscitou o interesse pelo estudo. A gravidez representa uma etapa da vida onde surgem diversas alterações que superam largam...

  10. O Endorsement de desportistas influencia o comportamento de compra da Geração Y?

    OpenAIRE

    Henriques, Pedro Germano Santos Martins

    2012-01-01

    Mestrado em Marketing O endorsement de celebridades desportivas constitui para diversas marcas de renome, uma percentagem significativa de investimento de comunicação. Estas procuram obter diversos benefícios, tais como o aumento do reconhecimento do produto e marca. Este estudo incide na forma como os consumidores da geração Y, avaliam a influência do endorsement de celebridades desportivas no seu comportamento de compra. Explora também os elementos fundamentais que a celebridade deverá p...

  11. Assessment of natural radioactivity of sands in beaches from Great Vitoria, ES, Brazil; Avaliacao da radioatividade natural em areias das praias da Grande Vitoria, ES

    Energy Technology Data Exchange (ETDEWEB)

    Aquino, Reginaldo Ribeiro de

    2010-07-01

    In this work the concentrations of natural radionuclides {sup 226}Ra, {sup 232}Th and {sup 40}K were determined in superficial sand samples for 16 locations throughout the coast of the Great Victory, metropolitan region of the state of Espirito Santo, Southeast of Brazil. The assessed beaches were Manguinhos and Jacaraipe in Serra county, Camburi, Praia do Canto and Curva da Jurema in Vitoria county, Praia da Costa and Itapua in Vila Velha county, Setibao, Setibinha, Praia do Morro, Praia das Castanheiras and Areia Preta in Guarapari county and sand of the Paulo Cesar Vinha Reserve also located in Guarapari county. Three sand samples of each beach were sealed in 100 mL high density polyethylene flasks. After approximately 4 weeks in order to reach secular equilibrium in the {sup 238}U and {sup 2}'3{sup 2}Th series, the samples were measured by high resolution gamma spectrometry and the spectra analyzed with the WinnerGamma software. The self absorption correction was performed for all samples. The {sup 226}Ra concentration was determined from the weighted average concentrations of {sup 214}Pb and {sup 21}'4Bi, the {sup 232}Th concentration was determined from the weighted average concentrations of {sup 228}Ac, {sup 2}'1{sup 2}Pb and {sup 212}Bi and the concentration of {sup 40}K is determined by its single gamma transition of 1460 keV. The radium equivalent concentration and the external hazard index where obtained from the concentrations of {sup 226}Ra, {sup 232}Th and {sup 4}'0K. {sup 226}Ra concentrations show values varying from 3 +- 1 Bq.kg-1 to 738 +- 38 Bq.kg{sup -1}, with the highest values for the central locality of the Camburi beach. {sup 232}Th concentrations show values varying from 7 +- 3 Bq.kg{sup -1} to 7422 +- 526 Bq.kg{sup -1}, with the highest values for Areia Preta beach. {sup 40}K concentrations show values varying from 14 +- 6 Bq.kg{sup -1} to 638 +- 232 Bq.kg{sup -1}, with the highest values for Areia Preta beach

  12. Evaluation of the natural radioactivity at sands of anomalous regions of Espirito Santo state, Brazil; Avaliacao da radioatividade natural em areias de regioes anomalas do Espirito Santo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Aquino, Reginaldo Ribeiro de; Pecequilo, Brigitte Roxana Soreanu, E-mail: raquino@ipen.b, E-mail: brigitte@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2011-10-26

    The natural radioactivity in sands of anomalous regions of the state of Espirito Santo, Brazil, were calculated from the concentration of activity of {sup 40}K, {sup 225}Ra and {sup 232}Th for the places of south and central of Camburi, Curva da Jurema, Ilha do Boi, Setibinha, south and central area of Praia da Areia Preta, denominated Black Spot. The samples were sealed and measured by high resolution gamma spectrometry and after a expectation time pf 30 days, until to reach a radioactive equilibrium

  13. Evaluation of the influence of water and oil derivatives absorption on PVC pipes; Avaliacao da influencia da absorcao de agua e de derivados de petroleo em tubulacoes de PVC

    Energy Technology Data Exchange (ETDEWEB)

    Carpio, D.C.F. del; D' Almeida, J.R.M., E-mail: dalmeida@puc-rio.b [Pontificia Univ. Catolica do Rio de Janeiro (PUC-Rio), RJ (Brazil). Dept. de Engenharia de Materiais

    2010-07-01

    PVC is the only polymer of large consume that is not totally obtained from petroleum, since it contains 57% of chlorine. As chlorine containing materials are resistant to bacteria rich environments, such as buried pipes, PVC is being used for fluid transportation, principally water, but it can also be considered as an alternative material for the transportation of other fluids. This work analyzes the aging behavior of PVC exposed to water, ethanol and diesel oil, using TGA, DSC, FT-IR and DR-X techniques. The results showed that the chemical structure of PVC is not affected by exposure to water and ethanol. For these fluids a dipolar interaction could be occurring, increasing at the beginning of the absorption process, the polymer thermal stability. The diesel oil caused plasticization, with reduction of the Tg since the beginning of the aging process. (author)

  14. Evaluation of oil and grease removal by adsorptive polymeric resins in semi-industrial scale: influence of temperature; Avaliacao da remocao de oleos e graxas por resinas polimericas adsorventes em escala semi-industrial: influencia da temperatura

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Luis F.S. de; Silva, Carla M.F. da; Queiros, Yure G.C.; Lucas, Elizabete F. [Universidade Federal do Rio de Janeiro, Instituto de Macromoleculas, Laboratorio de Macromoleculas e Coloides na Industria de Petroleo, Rio de Janeiro, RJ (Brazil)], e-mail: elucas@ima.ufrj.br

    2011-07-01

    The aim of this study was to evaluate the performance of polymeric resins packed in a fixed bed eluted in semi-industrial scale for oil and greases removal disposed in synthetic oily water in different temperature conditions. For this work, columns packed with vinyl and acryl polymer-base were tested and their efficiency of oil removal was evaluated by fluorimetry technique in two different temperatures: 25 and 60 deg C, in a flow rate condition of 200 mL/min. The experimental results were very good: the removal efficiencies were above 98% in both cases. At 60 deg C, the system keep the efficiency for a longer time: no significant loss in the efficiency was observed after eluting 1,000 times of the column bed volume at 25 deg C and 2,000, at 60 deg C. This result characterizes a great potential of application in the industry. (author)

  15. Influencia da adubaçao nitrogenada na incidencia de Gyropsylla spegazziniana (Hemiptera:Psyllidae) praga da erva-mate cultivada

    OpenAIRE

    Ribeiro, Marcia Marzagão

    2013-01-01

    A erva-mate é cultivada na região sul do Brasil e consumida na Argentina, Paraguai, Uruguai e Brasil. Sua composição foliar a torna uma interessante bebida com potencial nutricional e medicinal. A erva-mate beneficiada deve estar livre de impurezas, fragmentos de insetos e resíduos de inseticidas; deve conter em suas folhas, os minerais que a tornam nutricional e medicinalmente importante. O objetivo deste trabalho foi estudar as relações da nutrição mineral da erva-mate com o ...

  16. Influencia de lo abono nitrogenado en la calidad de ensilaje de maíz Influência da adubação nitrogenada sobre a qualidade da silagem de milho

    Directory of Open Access Journals (Sweden)

    Simone Basi

    2012-06-01

    Full Text Available

    La calidad final de ensilaje de maíz está directamente relacionada con el estado nutricional de las plantas. De los nutrientes requeridos por el cultivo, el nitrógeno (N es considerado el más importante. Esta revisión tiene como objetivo discutir temas relacionados con la dinámica de este nutriente en la planta de maíz, con énfasis en su influencia en los diversos eventos fisiológicos en los que participa. La producción de materia seca depende de la fuente y forma de suministro de este elemento a la planta. El uso de Azospirillum brasilense ha tenido prominencia a través de la fijación biológica de nitrógeno mediante la reducción de los costes de producción para la economía en el uso de N mineral, así como con el incremento de producción debido al uso más regular de lo nutriente en relación con los fertilizantes minerales, asegurando así una mayor productividad y calidad del material. Con un entendimiento de las funciones de este importante nutriente a la planta, el suministro alternativo y técnicas de gestión puede obtener un mayor valor nutritivo del ensilaje, debido al aumento de la concentración de proteína en la planta. Además con el aumento de la producción de materia seca por unidad de área, aumento de la producción de grano, mayor valor energético, influye en la concentración de fibras del material ensilado y posiblemente en el rendimiento de los animales.

    A qualidade final da silagem de milho está diretamente relacionada ao estado nutricional das plantas. Dos nutrientes exigidos pela cultura, o nitrogênio (N é considerado o de maior importância. A presente revisão tem como objetivo discutir aspectos relacionados à dinâmica deste nutriente na planta de milho, dando ênfase em sua influência nos diversos eventos fisiológicos dos quais participa. A produção de matéria seca depende da fonte e da forma de fornecimento deste elemento à planta. O uso

  17. Influence of density and chemical composition of soils in the neutrons probes answer; Influencia da densidade e da composicao quimica dos solos na resposta de sondas de neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Crispino, Marcos Luiz; Antonino, Antonio Celso Dantas; Dall`Olio, Attilio; Oliveira Lira, Carlos Alberto Brayner de [Pernambuco Univ., Recife, PE (Brazil). Dept. de Energia Nuclear; Carneiro, Clemente J. Gusmao [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Dept. de Engenharia Nuclear

    1996-08-01

    The determination of soil humidity with neutron probes is based in the measure of the thermal neutron flux intensity and its behavior with the soil depend: soil`s chemical composition; soils physical parameters; neutrons` energetic spectrum and neutron-source detector geometry.The objective of this paper is to apply the multigroup function theory to calculate a neutron probe calibration curve utilizing representatives parameters and coefficients of soils horizons in a experimental station in Zona da Mata, Pernambuco, Brazil 2 tabs., 3 figs.

  18. Geological, geotechnical and environmental evaluation of influence area of the oil production in the municipality of Mangaratiba, Rio de Janeiro, Brazil; Avaliacao geologico-geotecnica e ambiental da zona de influencia do duto petrolifero no municipio de Mangaratiba (RJ)

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, Andre Ferreira; Polivanov, Helena [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Geociencias. Dept. de Geologia; Silva, Jorge Xavier da [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Geociencias. Dept. de Geografia; Oliveira, Wilson J. de [PETROBRAS Engenharia, Rio de Janeiro, RJ (Brazil)

    2004-07-01

    This paper is applicable for a specials and strategies areas that must be permanently controlled called pipelines and their proximities. Those areas are liable to be under the influence of different situations like potential environmental risks - eg. conflagrations, floods, soil erosion, slumps and also accidental risks like located spills. Besides those negatives environmental situations, the pipelines also cross different regions that has an important natural resource like forests, watersheds, urban, industrial and agricultural areas. For main regulator of this work the pipeline was developed a series of maps that can be used single or overlayed with another maps. Those maps can be useful for Mangaratiba city urban management and demonstrate possible environmental risks that can occur on pipelines proximities of this city. (author)

  19. 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.

  20. Influencia de la Peroxidación de Lípidos sobre el Daño Oxidativo Mitocondrial y la Integridad de Saccharomyces cerevisiae Influence of Lipoperoxidation over Mitochondrial Oxidative Damage and Integrity of Saccharomyces cerevisiae

    Directory of Open Access Journals (Sweden)

    Christian Cortés-Rojo

    2009-01-01

    Full Text Available Se ha estudiado la influencia de la peroxidación de lípidos sobre el daño oxidativo mitocondrial y la integridad de Saccharomyces cerevisiae. Para esto, se aumentó el grado de insaturación de las membranas celulares de S. cerevisiae con ácido α-linolénico (C18:3. Se obtuvieron esferoplastos para poder estudiar la función mitocondrial in situ. Se encontró que la peroxidación de lípidos, estimulada por la adición de Fe2+, incrementó únicamente en esferoplastos con C18:3, mientras que la función mitocondrial, medida como el consumo de oxígeno sensible a cianuro y la integridad celular, determinada por la exclusión del colorante azul de tripano, se ven afectadas de manera significativa sólo en esferoplastos con C18:3. Estos resultados muestran que la peroxidación de lípidos sensibiliza la integridad celular y la función mitocondrial hacia los daños por el estrés oxidativo.The influence of lipoperoxidation over mitochondrial oxidative damage and integrity of Saccharomyces cerevisiae has been studied. For this, the unsaturation degree of cell membranes from Saccharomyces cerevisiae was increased by adding α-linolenic acid (C18:3. Spheroplasts were obtained to evaluate in situ the mitochondrial function. Lipid peroxidation levels, stimulated by the treatment with Fe2+, increased only in spheroplasts with C18:3, while mitochondrial function, measured as cyanide-sensitive oxygen consumption, and cell integrity, determined by trypan blue exclusion, were affected significatively only in spheroplasts with C18:3. These results show that lipid peroxidation sensitizes cell integrity and mitochondrial function towards damaging effects of oxidative stress.

  1. Does the edge effect influence plant community structure in a tropical dry forest? O efeito de borda influencia a estrutura da comunidade vegetal em uma floresta tropical seca?

    Directory of Open Access Journals (Sweden)

    Diogo Gallo Oliveira

    2013-04-01

    Full Text Available Edge effects are considered a key factor in regulating the structure of plant communities in different ecosystems. However, regardless to few studies, edge influence does not seem to be decisive in semiarid regions such as the Brazilian tropical dry forest known as Caatinga but this issue remains inconclusive. The present study tests the null hypothesis that the plant community of shrubs and trees does not change in its structure due to edge effects. Twenty-four plots (20 x 20 m were set up in a fragment of Caatinga, in which 12 plots were in the forest edges and 12 plots were inside the fragment. Tree richness, abundance and species composition did not differ between edge and interior plots. The results of this study are in agreement with the pattern previously found for semiarid environments and contrasts with previous results obtained in different environments such as Rainforests, Savanna and Forest of Araucaria, which indicate abrupt differences between the border and interior of the plant communities in these ecosystems, and suggest that the community of woody plants of the Caatinga is not ecologically affected by the presence of edges.Efeitos de borda são considerados fator-chave na regulação da estrutura de comunidades vegetais em diferentes ecossistemas. Entretanto, apesar dos poucos estudos relacionados, o efeito de borda parece não ser determinante em regiões semiáridas, como a floresta tropical seca brasileira, conhecida como Caatinga. Este estudo testou a hipótese nula de que a comunidade vegetal arbustivo-arbórea não sofre alterações em sua estrutura, riqueza e composição devido ao efeito de borda. Foram instaladas 24 parcelas (20 x 20 m em um fragmento de Caatinga arbórea, sendo 12 parcelas na borda do fragmento e 12 parcelas no seu interior. A riqueza, abundância e composição das espécies não diferiram estatisticamente entre as parcelas de borda e interior. Os resultados deste estudo corroboram um possível padr

  2. Quality evaluation of image segmentation of brain magnetic resonance for mapping and functional analysis; Avaliacao da qualidade de segmentacao de imagens de ressonancia magnetica cerebral para mapeamento e analise funcional

    Energy Technology Data Exchange (ETDEWEB)

    Maeda, F.K.; Canova, C.V.; Marques da Silva, A.M. [Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS), Porto Alegre, RS (Brazil). Faculdade de Fisica. Nucleo de Pesquisas em Imagens Medicas (NIMed)

    2004-07-01

    The objective of this paper was to evaluate the quality of the brain structure segmentation in magnetic resonance images (MRI) through a comparison between automatic and semiautomatic volumetric segmentation techniques. T1-weighed volumetric acquired stacks of MRI head images from Centro de Diagnostico por Imagens at the Hospital Sao Lucas da PUCRS were used in this study. In the semi-automatic segmentation technique were applied procedures like pre-processing and region-growing using Image J software. The automatic method of volume segmentation was carried through by Statistical Parametric Mapping (SPM), a statistical analysis tool written for software MATLAB. The automatic method of volumetric segmentation had better performance in time. However the quality of image that the half-automatic segmentation presents a better detailing, but it required longer image processing time. The best method to be used, whether automatic or semi-automatic, depends on the region of interest. (author)

  3. Thermal hydraulic evaluation for an experimental facility to investigate pressurized thermal shock (PTS) in CDTN/CNEN; Avaliacao termo-hidraulica da montagem experimental de choque termico pressurizado do CDTN/CNEN

    Energy Technology Data Exchange (ETDEWEB)

    Palmieri, Elcio T.; Navarro, Moyses A.; Aronne, Ivam D.; Terra, Jose L. [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, MG (Brazil)

    2002-07-01

    The goal of the work presented in this paper is to provide necessary thermal hydraulics information to the design of an experimental installation to investigate the Pressurized Thermal Shock (PTS) to be implemented at Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN). The envisaged installation has a test section that represents, in a small scale, a pressure vessel of a nuclear reactor. This test section will be heated and then exposed to a PTS in order to evaluate the appearance and development of cracks. To verify the behavior of the temperatures of the pressure vessel after a sudden flood through the annulus, calculations were made using the RELAP5/MOD 3.2.2 gamma code. Different outer radiuses were studied for the annular region. The results showed that the smaller annulus spacing (20 mm) anticipates the wetting of the surface and produces a higher cooling of the external surface, which stays completely wet for a longer time. (author)

  4. Evaluation of solubility in simulated lung fluid of metals present in the sludge from a metallurgical industry to produce metallic zinc; Avaliacao da solubilidade em liquido pulmonar simulado dos metais presentes no rejeito gerado por uma industria metalurgica de zinco

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Rosilda Maria Gomes de

    2012-07-01

    The objective of this study was to determine the solubility parameters (rapid and slow dissolution rates, rapid and slow dissolution fractions) metal particles present in a pile of sludge accumulated under exposure to weathering from the Cia Mercantil Inga, located at the Ilha da Madeira, Sepetiba Bay, Rio de Janeiro. Plant samples collected in the neighboring of the pile and bioindicators placed in the region and collected after some months indicated that the inhabitants of Ilha da Madeira have been exposed to trace elements such zinc, cadmium, mercury and lead, produced during the processing of zinc minerals (hemimorphite - Zn{sub 4}(OH){sub 2}Si{sub 2}O{sub 7}.H{sub 2}O, and willemite - Zn{sub 2}SiO{sub 4}). A static dissolution test in vitro was used to determine the solubility parameters using a simulated lung fluid (SLF), on a time basis ranging from 10 min to 1 year. The metal concentrations in the sludge samples and in the SLF were determined using Particle Induced X-rays Emission (PIXE). In conclusion, this study confirms the harmful effects on the neighboring population of the airborne particles containing these metals that came from the sludge. The solubility parameters obtained for Zn, Cd, Cr, Ni and Mn present in the rapid dissolution fraction in SLF were 0.945; 0.473; 0.226; 0.300 and 0.497, respectively, and the corresponding times for half life of dissolution of the rapid fraction were f{sub r} = 2.082 days; f{sub r} = 0.09 days; f{sub r} = 0.37 days; f{sub r} = 0.332 days ad f{sub r} = 0.99 days; for the slow dissolution fraction times were f{sub r} = 146.95 days; f{sub r} = 63 days; f{sub r} = 86.64 days; f{sub r} = 79.66 days and f{sub r} = 59.84 days. These values indicate that these metals present a moderate absorption level in SLF, and may be classified as M type, according to the International Commission on Radiological Protection (ICRP). The use of solubility parameters allowed a better description of the kinetic behaviour of the sludge in

  5. Aquatic macro algae of a region under Almirante Alvaro Alberto nuclear power plant influence. I. Spatial seasonal evaluation; Macroalgas marinhas da regiao sob influencia da Central Nuclear Almirante Alvaro Alberto (CNAAA), Saco de Piraquara de Fora, Angra dos Reis, RJ, Brasil. I. Avaliacao espaco-temporal

    Energy Technology Data Exchange (ETDEWEB)

    Pedrini, A.G. [Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, RJ (Brazil)]|[Universidade Santa Ursula, Rio de Janeiro, RJ (Brazil). Centro de Ciencias Biologicas; Cassano, V.; Coelho, L.G.; Labronici, G.J. [Universidade do Estado, Rio de Janeiro, RJ (Brazil). Inst. de Biologia

    1994-12-31

    Marine macro algae from the area which is under in fluence of the heated and chlorate liquid effluent to the CNAAA were observed (1981-1983) at 3 collection points: Pingo Dagua, Velho Beach, discharge point. A total of 121 taxa were found: 29 Chlorophyta, 26 Phaeophyta and 66 Rhodophyta. The spring season was the richest in taxa (78) while autumn was the poorest (85). Overall, the data suggest that the point A (Pingo Dagua) macro algae community (which is similar to the discharge point (0,80) is adequate for the control of the CNAAA effluent impact ad Piraquara de Fora. (author). 11 refs, 5 figs, 1 tab.

  6. In vitro evaluation of marginal microleakage in class V restorations with composite resin in bovine teeth. Laser irradiation influences and the adhesive system in the dentin pre-treatment; Avaliacao in vitro da microinfiltracao marginal em restauracoes de classe V com resina composta em dentes bovinos. Influencia da irradiacao laser e sistema adesivo no pre-tratamento dentinario

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Wendell Lima de

    2003-07-01

    Microleakage is one of the most important reasons to restorations failure, it is the responsible for marginal colors changing, new caries, hipersensibility and pulpar diseases. Several techniques and materials have been studied to eliminate or, at least, to decrease microleakage. The cavities preparation with Er:YAG laser and autoconditioning adhesive are some of these techniques and materials. This research has the objective to compare, in vitro, microleakage in class V cavities, prepared with high rotation (conventional treatment), Er:YAG laser (Enamel-400 mj/2 Hz/128,38 J/Cm{sup 2}, Dentin 250 mJ/ 2 Hz/ 80,24 J/Cm{sup 2}) and the treatment made at dentin with autoconditioning adhesive (Clerafil SE Bond) using Er:YAG laser (with water or not water) or not using Er:YAG laser. It was used 48 bovines teeth with cavities prepared in vestibular face and gingival wall on cement enamel junction and oclusal wall on enamel. The materials used were autoconditioning adhesive (Clerafil SE Bond) and composite resin Z250. Teeth were divided into four groups of twelve samples each one, according to dentin treatment. Group 1 - Conventional cavity and autoconditioning adhesive. Group 2- Cavity prepared with Er: YAG laser and autoconditioning adhesive. Group 3 - Cavity prepared with Er:YAG laser and dentin conditioning with Er:YAG laser associated to water and autoconditioning adhesive. Group 4 - Cavity prepared with Er:YAG laser and dentin conditioning with Er: YAG laser without water and associated to autoconditioning adhesive. Teeth were restored and stocked at 37 deg C, thermocycled and placed into a 50% silver nitrate solution. Right after, teeth were sliced and evaluated on a stereo microscopic magnifying glass in order to see microleakage degree trying to follow a score from 0 to 3. The findings were submitted to Fisher, Anderson-Darling tests and to the not parametric Sen and Puri test. The results indicated that in gingival edge, the Group 2 showed less microleakage than others ones; in the oclusal edges there were not statistic differences among all the groups. (author)

  7. Evaluation of the quality of the radiopharmaceutical 99mTc-MIBI and its influence on image quality in myocardial perfusion scintigraphy; Avaliacao da qualidade do radiofarmaco {sup 99m}Tc-MIBI e sua influencia na qualidade da imagem em cintilografia de perfusao do miocardio

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Poliane Angelo de Lucena

    2013-07-01

    This study evaluated the quality of the {sup 99m}Tc-MIBI radiopharmaceutical from different manufacturers, used in three nuclear medicine services (NMS) in Recife-PE, through labeling procedure of each service. It was observed their biodistribution by quantifying the activity present in the organs of interest (heart / liver), the influence and interference in image quality and in myocardial scintigraphy diagnosis exam. In these NMS (A, B and C) were done quality controls in the eluates of {sup 99}Mo/{sup 99m}Tc generators (radionuclidic, chemical and radiochemical purity and pH) and of the {sup 99m}Tc-MIBI radiopharmaceutical (radiochemical purity and pH) used in myocardial scintigraphy exam. In the case of radiochemical purity (RCP), was used the thin layer chromatography technique; after the chromatographic ran on, the plates were analyzed both in the dose calibrator, and in scintillation camera of each NMS. The radiopharmaceutical biodistribution was evaluated through the activities present in the heart and liver images in 60 patients, using the technique of combined images counting. Five nuclear physicians analyzed 24 images through myocardial perfusion visual interpretation during stress, it was verified the agreement degree among them. The results of the quality control showed that all eluate samples were in agreement with the manufacturers in relation to radionuclidic purity and pH. In relation to chemical purity, 10% of the services samples B and C showed Al{sup +3} values above 10 ppm. In the RCP, it was observed that using the scintillation camera, only 22% of the samples would be discarded, while with dose calibrator would be 78%, indicating that the scintillation camera is more sensitive in chromatographic pale analysis. For the labeled radiopharmaceutical, the services B and C presented respectively one and three samples with RCP percentage below 90%. However, C service presented the lowest medium to liver/heart proportions, showing that this factor does not depends on the labeling efficiency. In the images evaluation, in relation to perfusion defect degree, were observed a lower concordance number (20%) among the evaluators in the exams group with radiopharmaceutical labeling problems. These results suggested that problems in radiopharmaceutical labeling can interfere in image interpretation, emphasizing the need to comply with ANVISA (Brazilian Health Surveillance Agency) requirements in relation to quality controls in radiopharmaceuticals implementation before its administration to the patient. (author)

  8. A influência da família na vivência da sexualidade de mulheres adolescentes La influencia de la familia en la vivencia de la sexualidad de niñas adolescentes The influence of the family in the experience of sexuality in adolescent girls

    Directory of Open Access Journals (Sweden)

    Lúcia Beatriz Ressel

    2011-06-01

    Full Text Available O objetivo deste trabalho consistiu em identificar a influência da família na vivência da sexualidade de mulheres adolescentes. Trata-se de uma pesquisa de campo, descritiva, com abordagem qualitativa cuja coleta de dados deu-se por meio de entrevista semiestruturada. As participantes da pesquisa foram 18 mulheres adolescentes. Aplicou-se a análise temática para a interpretação e a categorização dos dados. Os resultados apontaram para as seguintes categorias: 'sexo sem imprevistos: os pais falam sobre a prevenção'; 'a repressão da sexualidade: entre normas instituídas e acordos invisíveis'; e 'tornar-se mulher: os discursos disciplinadores sob o enfoque de gênero'. Verificou-se a necessidade de vislumbrar a atenção à saúde da mulher adolescente de maneira integral, enfocando os significados sociais e culturais atribuídos à sexualidade. Dessa forma, as atividades desenvolvidas pelos profissionais de saúde com mulheres adolescentes devem envolver a família, instituição promotora da singularização do indivíduo na sociedade.El objetivo de este trabajo consistió en identificar la influencia de la familia en la vivencia de la sexualidad de niñas adolescentes. Se trata de una investigación descriptiva, con abordaje cualitativo, cuya recolección de datos ocurre a través de encuestas seme-estructuradas. Las par ticipantes de la investigación fueron 18 niñas adolescentes. Se realizó un análisis temático para la interpretación y la categorización de los datos. Los resultados apuntaron para las siguientes categorías: "sexo sin imprevistos: los padres hablan sobre la prevención", "la represión de la sexualidad: entre normas instituidas y acuerdos invisibles", y "volverse mujer: los discursos disciplinarios bajo un enfoque de género". Se percibió la necesidad de darle la debida atención a la salud de la niña adolescente de forma integral con enfoque en los significados sociales y culturales atribuidos a la

  9. A influência da comunicação não verbal no cuidado de enfermagem La influencia de la comunicación no verbal en la atención de enfermería The influence of non-verbal communication in nursing care

    Directory of Open Access Journals (Sweden)

    Carla Cristina Viana Santos

    2005-08-01

    Full Text Available Este estudo é vinculado ao Núcleo de Pesquisa e Experimentação em Enfermagem da Escola de Enfermagem Alfredo Pinto UNIRIO, e que teve origem durante o desenvolvimento de um trabalho monográfico. O objeto constitui-se no significado da comunicação não-verbal sob a ótica dos graduandos de enfermagem. Apresenta como objetivos: Identificar o significado da comunicação não verbal para os acadêmicos de enfermagem e Analisar a influência da mesma no cuidado de enfermagem. A abordagem metodológica utilizada foi à qualitativa aplicando-se como estratégia a dinâmica de sensibilidade para a coleta de dados. Observa-se que os alunos da graduação identificam a importância e a influência da comunicação não verbal durante a assistência, entretanto, há a necessidade em se ampliar o conhecimento do processo de comunicação não verbal para implementação do cuidado de enfermagem.Este estudio está vinculado al Núcleo de Investigación y Experimentación en Enfermería de la Escuela de Enfermería Alfredo Pinto UNIRIO, y que tuvo origen durante el desarrollo de un trabajo de monografía. El objeto se constituye en el significado de la comunicación no-verbal según la visión de los estudiantes de graduación en enfermería. Presenta como objetivos: Identificar el significado de la comunicación no-verbal para los académicos de enfermería, y Analizar la influencia de la misma en el cuidado de enfermería. El enfoque metodológico utilizado fue el cualitativo, y se aplicó la dinámica de sensibilidad como estrategia para la recopilación de datos. Se observa que los alumnos del curso de graduación identifican la importancia y la influencia de la comunicación no-verbal durante la asistencia, sin embargo, existe la necesidad de ampliar el conocimiento del proceso de comunicación no-verbal para la implementación del cuidado de enfermería.The present study is linked to the Center for Researching and Testing in Nursing at the

  10. Influência da extensão da artrodese lombossacra nos resultados clínicos e funcionais Influencia de la extensión de la artrodesis lumbosacra en los resultados clínicos y funcionales Influence of the extent of lumbosacral arthrodesis in clinical and functional outcomes

    Directory of Open Access Journals (Sweden)

    Alberto Ofenhejm Gotfryd

    2012-01-01

    Full Text Available OBJETIVO: Verificar a influência da extensão da fusão póstero-lateral lombossacra e seu impacto nos resultados clínicos e funcionais. MÉTODOS: Foram avaliados 22 pacientes portadores de estenose central, foraminal ou hérnia de disco lombar, associadas a instabilidade segmentar, submetidos ao tratamento cirúrgico para a descompressão neural e artrodese póstero-lateral. Os pacientes foram divididos em dois grupos, de acordo com quantidade de níveis artrodesados: Grupo 1: fusão em um nível e Grupo 2: fusão em dois ou mais níveis. Os pacientes preencheram questionários referentes ao acompanhamento pós-operatório (uso de medicamentos analgésicos e satisfação com o tratamento e escala analógica visual de dor lombar e ciática. Além disto, foram aplicados os questionários Oswestry e SF-36 para avaliação da qualidade de vida. RESULTADOS: Os resultados do SF-36 mostraram bons níveis de qualidade de vida em ambos os grupos, com exceção do domínio "Aspectos Físicos". Não houve correlação significativa entre a extensão da artrodese e os desfechos clínicos. CONCLUSÕES: Os pacientes submetidos à artrodese póstero-lateral apresentaram qualidade de vida satisfatória, exceto pela diminuição da aptidão física. Entretanto, o maior número de níveis artrodesados não teve impacto negativo sobre os aspectos clínicos e funcionais.OBJETIVO: Investigar la influencia del grado de la fusión posterolateral lumbosacral y su impacto en los resultados clínicos y funcionales. MÉTODOS: Se evaluaron 22 pacientes con estenosis central, foraminal o hernia de disco lumbar, asociadas a inestabilidad segmentaria; se sometieron a cirugía para la descompresión neural y la artrodesis posterolateral. Los pacientes fueron divididos en dos grupos según el número de niveles fusionados: Grupo 1: la fusión en un nivel, y Grupo 2: la fusión en dos o más niveles. Los pacientes completaron cuestionarios sobre seguimiento posoperatorio (uso

  11. The influence of the reactive energy in the electric power sector planning and the need of consolidation of the hourly period for evaluation of the power factor of the loads; A influencia da energia eletrica reativa no planejamento do setor eletrico e a necessidade de consolidacao do periodo horario para avaliacao do fator de potencia das cargas

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Moacyr Trindade de Oliveira

    1993-07-01

    Among expectations of optimization of electric power systems and the national electric rating laws, there is the important factors of consumption and transmission of reactive energy which concerns the objectives of electric sector. Related to it, the DNAEE, ELETROBRAS and the concessionaires have been developing studies in order to optimize the electric system performance, and consequently the investments of concessionaires and consumers, reducing costs imposed to society due to the form of consumption and/or compensation of reactive loads. This work shows the evolution and consolidation of tariff studies and electric performance of the system, indicating the ways which attend the expectations os all segments of the society through a small adaptation of present regulations an rules related to reactive energy, making possible the system growing in supply by the minimum cost. The main objective of this work is to reinforce the real necessity of to remain intact all the new regulation of power factor, that has been consolidated by the DNAEE's document number 085/92 and your revaluation document number 613/93, including the interval of hourly integration for reactive energy at the determinate date and show the damages for the society caused by the postponement of this condition, that has been considerate in the document number 613/93, from April 1994 until April 1996, however keeping in 1994 the introduction of the new power factor reference of 0.92. (author)

  12. Evaluation the influence of Polyethylene glycol in circulation and biodistribution of pH-sensitive liposomes, radiolabeled with Technetium 99m in experimental models; Avaliacao da influencia do polietilenoglicol na circulacao e biodistribuicao de lipossomas pH-sensiveis, radiomarcados com Tecnecio 99m em modelos experimentais

    Energy Technology Data Exchange (ETDEWEB)

    Nunes, Shirleide Santos

    2016-07-01

    Liposomes are lipid vesicles widely studied throughout the world as nanocarriers for different substances. The hydrophilic polymer polyethylene glycol (PEG) might be added onto the surface of liposomes to prolong the circulation time by reducing the opsonization of the vesicles, leading to a reduced uptake by the mononuclear phagocyte system (MPS). Several studies claim that the molecular weight of the PEG, as well as combination of different types of PEG with different molecular weights may alter the pharmacokinetics of the liposome. Therefore, the purpose of this study was to evaluate the influence of molecular weight and PEG combinations with different chain sizes in the pharmacokinetics and biodistribution of pH-sensitive liposomes containing {sup 99m}Tc-HYNIC-βAla-Bombesin complex (7-14 ) in tumor models (4T1 and Ehrlich). Eight liposomal formulations were prepared, the results showed that the liposomes exhibited adequate chemical and physical-chemical properties, such as mean diameter less than 300nm, monodisperse populations, neutral zeta potential, and encapsulation content of 26.4 to 38.7%. The images obtained by transmission electron cryomicroscopy (cryo-TEM) allowed visualization of unilamellar vesicles with an average diameter of 90 nm. There was no difference in blood half-life (T1/2), thereby for the composition of liposomes used in this study, PEG did not increase blood circulation time. Biodistribution studies and scintigraphic images showed high uptake by organs of the SMF, liver and spleen. The PEG2000 formulation showed higher concentration in blood. Liposomes with DSPE, PEG2000 or PEG1000 / 5000 showed higher uptake in the tumor compared to the contralateral muscle, but there was no statistical difference between the formulations when tumor-to-muscle ratio, obtained in the biodistribution studies or scintigraphic images, was analyzed. The results suggest that for this specific formulation, the addition of PEG was not efficient for increasing the concentration of the radiolabeled peptide in tumor tissue, however further studies to confirm this hypothesis is required. (author)

  13. Evaluation of the influence of percent labeling of {sup 99m}Tc-MIBI on nuclear medicine procedures in Recife, Pernambuco State, Brazil; Avaliacao da influencia do percentual de marcacao do {sup 99m}Tc-MIBI em procedimentos de medicina nuclear em Recife, PE

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Jucilene Maria

    2003-08-15

    The aim of this work was to evaluate the influence of percent labeling of the radiopharmaceutical {sup 99m}Tc-MIBI on the procedures adopted by the nuclear medicine clinics in Recife, Pernambuco State, Brazil, and their possible interference with image quality in myocardial perfusion examinations. This work was performed at two nuclear medicine services in Recife that use pharmaceuticals provided by two different manufacturers: Cardiolite, provided by Dupont and Cardiosyd, provided by SYDMA. The pH, percent labeling and stability of samples of {sup 99m}Tc-MIBI and the percent uptake in heart and liver of a number of patients were evaluated. The results showed that the pH values measured in all samples of both radiopharmaceuticals were within the limits recommended. In 48% of the Cardiolite samples, the percent labeling was less than 90%, which is the minimum recommended limit. On the other hand, 87,5% of the Cardiosyd samples measured values above 98%. Both radiopharmaceuticals had good labeling stability, even in samples with low percent labeling efficiencies. In spite of the higher percent labeling of Cardiosyd its heart uptake is similar to that observed with the Cardiolite, even when the percent labeling is lower than 90%. On the other hand, the image quality, according to physicians, evaluation was poorer for Cardiosyd images, due to high noise and poor sharpness. (author)

  14. O vencimento da dívida pública cambial influencia a taxa de câmbio? Um estudo econométrico para o brasil no período 2003-2004

    Directory of Open Access Journals (Sweden)

    Roberto Meurer

    2007-03-01

    Full Text Available Neste trabalho testou-se a hipótese de sinalização, sob a qual a taxa de câmbio entre o real e o dólar teria um comportamento diferente nos períodos que antecedem a liquidação da dívida pública interna cambial brasileira, com o que os detentores da dívida conseguiriam um rendimento acima do normal. Testes paramétricos lineares (regressão com variável dummy e não-lineares (GARCH e mudança de regime markoviano, bem como não-paramétricos (Mann-Whitney e Wilcoxon não detectaram comportamento anormal da variação da taxa de câmbio antes do vencimento da dívida pública cambial em 2003 e 2004. Com isto rejeita-se a hipótese de que a proximidade da data de vencimento da dívida pública poderia sinalizar ganhos extraordinários no mercado de câmbio, mas há alteração na volatilidade. Os testes de Mann-Whitney e Wilcoxon e o modelo GARCH com variável dummy detectaram comportamento diferente do retorno da taxa de câmbio no dia do vencimento da dívida pública, quando já não haveria interesse dos detentores dos títulos em elevar a cotação do dólar. Pelo modelo GARCH há uma aceleração da apreciação da moeda brasileira no dia do vencimento da dívida pública em relação ao restante dos anos de 2003 e 2004. O teste para mudança de regime markoviano, entretanto, não detectou retornos anormais no dia do vencimento da dívida pública cambial.The aim of this paper is to test the hypothesis that the exchange rate between the Brazilian real and the US dollar has a different behavior in the periods that precede the liquidation of dollar linked public debt, which could generate an above-normal return to the debt holders. The tests by dynamic regression with dummy variables, the non parametric Mann-Whitney and Wilcoxon tests, and Markov-switching models did not detect an abnormal behavior of the exchange rate in the days that precede the expiration of dollar indexed public debt in 2003 and 2004, rejecting the hypothesis

  15. Influência germânica nos primórdios da enfermagem profissional na cidade do Recife, Pernambuco (1924-1927 Influencia germánica en los inicios de la enfermería profesional en la ciudad de Recife, Pernambuco (1924-1927 Germanic influence in the early days of professional nursing in the city of Recife, Pernambuco (1924-1927

    Directory of Open Access Journals (Sweden)

    Fátima Maria da Silva Abrão

    2010-06-01

    Full Text Available Estudo histórico-social, que teve como objetivo a análise da influência germânica no campo da saúde nos primórdios da enfermagem profissional na cidade do Recife, Pernambuco. Foi feita análise do conteúdo dos documentos à luz do pensamento de Bourdieu. Na interpretação dos dados, a noção de campo e poder foi utilizada de modo a contemplar as forças que contribuem para a formação do campo organizacional da enfermagem. O recorte temporal foi de 1924, com a vinda das enfermeiras alemãs para trabalhar no Hospital do Centenário (HC, até 1927, quando ocorre a saída da enfermeira administradora. Utilizaram-se fontes primárias e secundárias. Como resultado, observa-se que a cultura alemã exerceu forte influência no campo da saúde, comércio, indústria, economia e educação. A influência se dá nos primórdios da enfermagem profissional pelo reconhecimento da atuação das enfermeiras pela dedicação e abnegação aos enfermos no trabalho que desenvolviam.Estudio histórico-social, que tuvo como objetivo el análisis de la influencia germánica en el campo de la salud en los inicios de la enfermería profesional en la ciudad de Recife, Pernambuco. Fue realizado el análisis del contenido de los documentos bajo la óptica del pensamiento de Bourdieu. En la interpretación de los datos las nociones de campo y poder fueron utilizadas como forma de contemplar las fuerzas que contribuyen a la formación del campo organizacional de la enfermería. El corte de tiempo se produjo en 1924, con la llegada de las enfermeras alemanas para trabajar en el Hospital del Centenario (HC y se extendió hasta 1927, donde se presenta la salida de la enfermera administradora. Se utilizaron fuentes primarias y secundarias. Como resultado, se observa que la cultura alemana ejerció una fuerte influencia en el campo de la salud, en el comercio, industria, economía y educación. La influencia se presenta en los inicios de la enfermería profesional

  16. The influence of aquatic humic substances characteristics on the coagulation efficiency using ferric chloride; Influencia das caracteristicas das substancias humicas aquaticas na eficiencia da coagulacao com o cloreto ferrico

    Energy Technology Data Exchange (ETDEWEB)

    Sloboda, Eliane; Vieira, Eny Maria [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Inst. de Quimica], e-mail: elisloboda@hotmail.com; Dantas, Angela Di Bernardo; Bernardo, Luiz Di [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Escola de Engenharia. Dept. de Hidraulica e Saneamento

    2009-07-01

    The aim of this study was to verify the influence of the apparent molecular size of aquatic humic substances on the effectiveness of coagulation with ferric chloride. Coagulation-filtration tests using jar test and bench-scale sand filters were carried out on samples of water with true color of approximately 100 Hazen units, prepared with aquatic humic substances of different molecular sizes (F{sub 1}: < 0.45 {mu}m, F{sub 2}: 100 kDa - 0.45 {mu}m, F{sub 3}: 30 - 100 kDa and F{sub 4}{sup '} : < 30 kDa). For the water samples with lower apparent molecular size fractions, greater dosages of coagulant was needed to remove the color around 5.0 Hanzen units, mainly because these water samples contain higher concentrations of fulvic acids, which exhibited a larger number of negatively-charged groups. (author)

  17. A influência da Ação Católica na atuação social e pastoral de D. Waldyr Calheiros: o caso dos Direitos Humanos na cidade Volta Redonda * La influencia de la Acción Catolica...

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    LUIZ FERNANDO MANGEA DA SILVA

    2014-09-01

    Full Text Available Resumo: O presente artigo faz uma análise da influência da Ação Católica na atuação social e pastoral de D. Waldyr Calheiros de Novaes na Diocese de Barra do Piraí/Volta Redonda, tendo como base o contexto sociopolítico nacional e local do início da década de 1950 até 1968. Essa atuação se inicia a partir do episódio referente à violação dos direitos humanos, em que operários da Companhia Siderúrgica Nacional e intelectuais volta-redondenses foram presos após uma comemoração pelos 20 anos da Declaração Universal dos Direitos do Homem. No evento, também foram comemorados os dois anos da chegada e posse do bispo à diocese. Houve, por parte da organização do evento, a iniciativa de incluir dramatizações que simbolizavam o universo dos trabalhadores. Não podemos esquecer que Volta Redonda era uma cidade militarizada, por causa da instalação do 1º Batalhão de Infantaria Blindada em Barra Mansa, cidade vizinha. O serviço de espionagem do regime militar identificou as lideranças operárias e intelectuais, o que resultou nas prisões dos organizadores do evento. Foi nesse episódio que o bispo se declarou preso no batalhão, em protesto contra a detenção dessas lideranças.Palavras-chave: Waldyr Calheiros de Novaes – Ação Católica – Ditadura Militar e Direitos Humanos. Resumen: Este artículo analiza la influencia de la Acción Católica en el trabajo social y pastoral D. Waldyr Calheiros de Novaes en la Diócesis de Barra do Piraí/Volta Redonda, en función del contexto socio-político nacional y local de la década de 1950 hasta 1968 . Dicha acción se inicia desde el episodio relativo a la violación de los derechos humanos, en el que los trabajadores nacionales Steel Company y los intelectuales era redondenses fueron arrestados después de una celebración para el 20 aniversario de la Declaración universal de los derechos humanos. En el evento, también se celebraron dos años de la llegada e

  18. Imagens e representações da enfermagem acerca do stress e sua influência na atividade laboral Imágenes y representaciones de la enfermería respecto del estrés y su influencia en la actividad laboral Nursing images and representations concerning stress and influence on work activity

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    Renata da Silva Hanzelmann

    2010-09-01

    Full Text Available Os objetivos deste estudo foram: identificar as representações acerca dos fatores desencadeadores do estresse, atribuídos pelos profissionais de enfermagem, na atividade laboral; e discutir a influência destes na sua atividade laboral. Optou-se por um estudo descritivo com abordagem qualitativa, para o qual foram utilizadas as premissas das Representações Sociais, tendo os estudos realizados como referencial de análise. Para coleta utilizou-se como instrumento entrevista semiestruturada e individual. A análise foi através da técnica de análise de conteúdo, a fim de buscar elementos para a compreensão das imagens como representações dos profissionais de enfermagem, o significado dos fatores estressantes, e sua influência na atividade laboral. A população estudada vive e convive com a falta de condições de trabalho, escassez de recursos materiais e humanos, e ainda com pessoal não treinado; o trabalhador sente-se insatisfeito, com fadiga mental e física - situações que podem propiciar o aparecimento do estresse no desempenho das atividades laborais.Los objetivos de este estudio apuntaron a identificar las representaciones acerca de los factores desencadenantes del estrés, atribuidos por los profesionales de la enfermería a la actividad laboral, y discutir la influencia de estos en la labor diaria. Se optó por un estudio descriptivo con abordaje cualitativo, para el cual fueron utilizadas las premisas de las Representaciones Sociales, teniendo como referencial de análisis los estudios realizados. Para la recolección de datos se utilizó como instrumento una entrevista semiestructurada e individual. El análisis se realizó a través de la técnica de análisis de contenido, a fin de buscar elementos para la comprensión de las imágenes como representaciones de los profesionales de enfermería, el significado de los factores estresores y su influencia en la actividad laboral. La población estudiada vive y convive con

  19. Avaliacao neuropsicologica de idosos praticantes de capoeira

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    Diogo Miranda Petry

    2014-01-01

    Full Text Available INTRODUÇÃO: Este estudo procura contribuir com uma relação pouco explorada no meio acadêmico: capoeira, cognição e envelhecimento. Relacionando estudos sobre funções executivas e a capoeira, busca-se investigar a interligação desta arte e as funções executivas. Estas se referem a desempenhos de comportamentos complexos (memória de trabalho, flexibilidade mental, tomada de decisão e a memória léxico-semântica. OBJETIVO: Comparar o desempenho de funções executivas em idosas praticantes de capoeira e idosas não praticantes de exercício físico. MÉTODO: Estudo transversal que coletou as informações de cada participante apenas uma vez. Serão comparados dois grupos: 1 grupo de idosos praticantes de capoeira e 2 idosos que não fazem exercício físico. Para seleção e caracterização dos grupos utilizaram-se: questionário sociodemográfico, aspectos gerais de saúde e escala de hábitos de leitura e escrita, mini-exame de estado mental (MEEM e escala de depressão de Yesavage (GDS-30. Para avaliar o desempenho das funções executivas foi realizado o teste de trilhas e as tarefas de fluência verbal. Para análise estatística dos dados será utilizado o teste de Shapiro-Wilk para normatização dos dados. O teste de t de Student e o teste U de Mann Whitney serão usados para comparar duas médias de amostras independentes. Utilizou-se a improvisação, a ação, a tomada de decisão, o equilíbrio e as noções de espaço, tempo, ritmo, música, e a compreensão do jogo da capoeira como intervenção devido à possível utilização dos processos executivos nessa arte. RESULTADOS: Verificou-se que não houve diferença significativa nos testes realizados. Porém houve superioridade nos testes de fluência verbal e testes de trilha A e B, sendo maior em B no grupo de capoeira do que no grupo controle. CONCLUSÃO: A prática de capoeira tem uma tendência em contribuir para a melhora das funções executivas, embora os

  20. Influência da ingestão de espirulina sobre o metabolismo de ratos exercitados Influencia de ingestión de Spirulina sobre el metabolismo de ratones exercitados Influence of spirulina intake on metabolism of exercised rats

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    Gustavo Puggina Rogatto

    2004-08-01

    Full Text Available No presente estudo foram comparadas as respostas metabólicas agudas ao exercício em ratos alimentados com dieta padrão e à base de espirulina. Ratos Wistar jovens foram divididos em dois grupos de acordo com a dieta: controle (C (dieta padrão e espirulina (S (dieta à base de espirulina. Ao final do período experimental (cinco semanas os animais foram submetidos a uma sessão aguda de exercício de natação (20 minutos, suportando sobrecarga equivalente a 5% do peso corporal para avaliação do lactato sanguíneo, glicose, insulina, proteínas, albumina e ácidos graxos livres (AGL séricos. Amostras do músculo gastrocnêmio e fígado foram utilizadas para determinação dos teores de glicogênio e lipídeos. Ambos os grupos C e S apresentaram aumento da glicemia e dos AGL, queda da insulinemia e redução dos teores de glicogênio muscular e hepático pós-exercício. A lactacidemia durante o exercício foi superior no grupo S em relação ao C. Conclui-se que o padrão de respostas ao exercício agudo dos grupos C e S foi semelhante. Contudo, a proteína da dieta pareceu influenciar aspectos do metabolismo glicídico.En el presente estudio fueron comparadas las respuestas metabólicas agudas al ejercicio en ratones alimentados con dieta padrón y a base de Spirulina. Ratones Wistar jovenes fueron divididos en dos grupos de acuerdo con la dieta: control (C (dieta padrón y Spirulina (S (dieta a base de Spirulina. Al final del período experimental (5 semanas los animales fueron sometidos a una sesión aguda de ejercício de natación (20 minutos, soportando sobrecarga equivalente a 5% de su peso corporal para evaluación del lactato sanguíneo, glucosa, insulina, proteínas, albumina y ácidos grasos libres (AGL séricos. Las muestras del músculo gastrocnemio y fígado fueron utilizadas para la determinación de los tenores de glicogeno y de lípidos. Ambos grupos C e S presentaron un aumento de la glicemia y de los AGL, mantenimiento

  1. Attitudes of nursing professionals towards suicidal behavior: influence of emotional intelligence Actitudes del profesional de enfermería hacia el comportamiento suicida: influencia de la inteligencia emocional Atitudes do profissional de enfermagem em relação ao comportamento suicida: influência da inteligência emocional

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    Mª Carmen Carmona-Navarro

    2012-12-01

    Full Text Available OBJECTIVE: To assess attitudes and the influence of emotional intelligence is the objective of this work. METHOD: Nursing professionals answered a questionnaire that assessed the attitude towards suicide and emotional intelligence. RESULTS: The results show a general adverse attitude towards suicidal behavior. The moral dimension of suicide makes the differences between mental health and emergency professionals. CONCLUSIONS: Possessing a higher degree of mental health training and a high level of emotional intelligence is associated with a more positive attitude towards patients with suicidal behavior. The formation and development of emotional skills are essential for care delivery to patients with suicidal behavior.OBJETIVO: Evaluar la actitud y la influencia de la inteligencia emocional es el objetivo de este trabajo. MÉTODO: Profesionales de enfermería contestaron un cuestionario que evaluó la actitud hacia el suicidio e inteligencia emocional. RESULTADOS: Los resultados muestran una actitud general desfavorable hacia el comportamiento suicida. La dimensión moral del suicidio marca las diferencias entre los profesionales de salud mental y urgencias. CONCLUSIONES: Poseer un mayor grado de formación en salud mental y un alto nivel de inteligencia emocional se asocia a una actitud más positiva hacia el paciente con comportamiento suicida. Formación y desarrollo de habilidades emocionales son fundamentales para el cuidado de los pacientes con conducta suicida.OBJETIVO: avaliar a atitude e a influência da inteligência emocional é o objetivo deste trabalho. MÉTODO: profissionais de enfermagem responderam a um questionário para avaliar as atitudes suicidas e inteligência emocional. RESULTADOS: os resultados mostram atitude geralmente desfavorável perante o comportamento suicida. A dimensão moral do suicídio faz a diferença entre profissionais de saúde mental e emergência. CONCLUSÕES: possuir maior grau de formação em sa

  2. A influência da família na vivência da sexualidade de mulheres adolescentes La influencia de la familia en la vivencia de la sexualidad de niñas adolescentes The influence of the family in the experience of sexuality in adolescent girls

    OpenAIRE

    Lúcia Beatriz Ressel; Carolina Frescura Junges; Graciela Dutra Sehnem; Cheila Sanfelice

    2011-01-01

    O objetivo deste trabalho consistiu em identificar a influência da família na vivência da sexualidade de mulheres adolescentes. Trata-se de uma pesquisa de campo, descritiva, com abordagem qualitativa cuja coleta de dados deu-se por meio de entrevista semiestruturada. As participantes da pesquisa foram 18 mulheres adolescentes. Aplicou-se a análise temática para a interpretação e a categorização dos dados. Os resultados apontaram para as seguintes categorias: 'sexo sem imprevistos: os pais fa...

  3. Kuhn's revolutionary theory and its influence on the construction of nursing knowledge La teoría revolucionaria de kuhn y su influencia en la construción del conocimiento de la enfermería A teoria revolucionária de kuhn e sua influência na construção do conhecimento da enfermagem

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    Marilene Loewen Wall

    2009-06-01

    Full Text Available This is a theoretical reflection, grounded in the ideas of "revolution theory" and its influence on the nursing profession. According to authors, many nursing schools have assimilated progress theory and embraced the claim that nursing follows the same revolutionary developmental model as the other sciences analyzed by this model. Thus, this reflection addresses the thesis that the existence of a single paradigm is not acceptable, especially in nursing, which works, assists and cares for human beings who present different perceptions of health/illness events. It argues that, for nursing, the existence of multiple paradigms indicate a strong dynamic science that encourages creativity, fosters the debate of ideas and is open to questioning.Se trata de una reflexión teórica formulada a partir de las ideas sobre la "teoría de la revolución" y su influencia en la profesión de enfermero. Según algunos autores, varias escuelas de enfermería asimilaron la teoría del progreso y adhirieron a la posición que afirma que la enfermería sigue el mismo modelo revolucionario de desarrollo que las demás ciencias analizadas por ese modelo. Así, esta reflexión se refiere a la tesis de que la existencia de solamente un paradigma no es aceptable, principalmente para la enfermería, que trabaja, asiste y cuida de seres humanos que presentan distintas percepciones acerca de las situaciones de salud y enfermedad. Señala que, para la enfermería, la existencia de múltiples paradigmas indica una ciencia fuerte y activa, que incentiva la creatividad, estimula el debate de ideas y se muestra abierta a cuestionamentos.Trata-se de reflexão teórica, formulada a partir das ideias acerca da "teoria da revolução" e sua influência na profissão enfermagem. Segundo autores, várias escolas de enfermagem assimilaram a teoria do progresso, aderiram à posição de que a enfermagem segue o mesmo modelo revolucionário de desenvolvimento como as demais ci

  4. The influence of violent TV cartoons watched by school children in Turkey Influencia de los dibujos animados violentos vistos en la televisión por escolares de Turquia Influência dos desenhos animados violentos assistidos na televisão por escolares da Turquia

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    Sibel Ergün

    2012-01-01

    Full Text Available OBJECTIVE: This study aimed to demonstrate the gender-specific impact of violence-oriented television cartoons on children, and to identify the behaviors demonstrating this influence. METHODS: The research was conducted on a total of 300 students chosen by a simple, random method applying a stratified weight in each school. A 20-question instrument was used for data collection, using face-to-face interviews with the students which occurred during visits to primary schools. RESULTS: A significant gender difference was noted between students' favourite cartoon shows, the type of influence those shows exerted, and the ways in which students imitated the behaviors of the cartoon characters (pOBJETIVO: Demostrar la influencia de la violencia en los dibujos animados de la TV sobre los niños de acuerdo al género y al tipo de comportamientos que les es sugerido. MÉTODOS: La investigación se llevó a cabo en Turquia occidental, que abarcó una muestra aleatoria simple de 300 alumnos con base en el peso muestral estratificado de 18 escuelas primarias. Los cuestionarios fueron aplicados por medio de entrevistas presenciales con los estudiantes de las escuelas del 1º grado que fueron visitadas y que aceptaron participar en este estudio. RESULTADOS: El nivel de significancia fue determinado según el género, con base en el tipo de dibujos animados que los niños preferían las condiciones con que eran influenciadas y la capacidad de imitar a los personajes de los dibujos animados (pOBJETIVO: Demonstrar a influência da violência nos desenhos animados da TV sobre as crianças de acordo com o gênero e o tipo de comportamentos que nelas é incutido. MÉTODOS: A investigação foi levada a cabo na Turquia ocidental, abrangendo amostra aleatória simples de 300 alunos com base no peso amostral estratificado de 18 escolas primárias. Os questionários foram aplicados por meio de entrevistas presenciais com os estudantes das escolas do 1º grau visitadas

  5. Interação mãe-criança e desenvolvimento da linguagem: a influência da depressão pós-parto = Mother-child interaction and language development: the influence os postpartum depression = Interacción madre-hijo y en el desarrollo del lenguaje: la influencia de la depresión posparto

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    Servilha, Beatriz

    2015-01-01

    Full Text Available O objetivo desta pesquisa foi verificar a influência da depressão pós-parto e do contexto afetivo de criação no desenvolvimento da linguagem de crianças de 36 meses. Foram analisadas 80 díades mães-crianças atendidas pelo sistema público de saúde: dentre as mães, 30 apresentaram indicativos de DPP. Avaliou-se o aspecto pragmático do desenvolvimento de linguagem, em filmagens de quinze minutos de brincadeira livre com a mãe, em função de informações colhidas desde o nascimento. O resultado do teste foi analisado quanto aos atos e meios comunicativos realizados durante a interação. A partir da análise dos dados, observou-se que, embora a maior parte das crianças apresentou um desempenho abaixo do esperado para a idade, as crianças do grupo controle verbalizaram mais para se comunicar que aquelas do grupo com DPP, que usaram mais gestos durante a interação. Concluiu-se que os aspectos relacionados ao s fatores da DPP influenciaram, de forma direta na interação diádica e no desenvolvimento da linguagem infantil

  6. Young entrepreneurship and family influence: the life history of a successful young girl El espíritu empresarial joven y la influencia de la familia: la historia de vida de una emprendedora de suceso Empreendedorismo jovem e a influência da família: a história de vida de uma empreendedora de sucesso

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    Rivanda Meira Teixeira

    2011-03-01

    realización de entrevista en profundidad. Se observó que la influencia de los padres fue decisiva para la creación y desarrollo del negocio y que algunas características de emprendedores encontradas en otros estudios fueron fácilmente identificadas en la joven emprendedora, como por ejemplo, la determinación, la creatividad, deseo de independencia, aprendizaje continuo y utilización de redes de relacionamientosAs características pessoais dos empreendedores e os fatores que influenciam suas escolhas, ações e comportamentos são temas relevantes para a compreensão do processo de criação de negócios. O objetivo deste estudo é analisar os fatores que influenciaram ou determinaram a trajetória de uma jovem que iniciou seu negócio aos treze anos de idade. Mais especificamente, pretendeu-se analisar a influência da família nessa trajetória e identificar as características mais marcantes que contribuíram para seu sucesso. Essa jovem empreendedora foi escolhida para este estudo de caso, pois sua experiência singular - de iniciar um empreendimento em idade tão precoce - permite explorar novos insights sobre as características mais marcantes que influenciaram o sucesso de seu negócio. Adotou-se a estratégia de estudo de caso e utilizou-se a história de vida como técnica de coleta de dados, com a realização de entrevista em profundidade. Observou-se que a influência dos pais foi decisiva para a criação e desenvolvimento do negócio e que algumas características de empreendedores encontradas em outros estudos foram facilmente identificadas na jovem empreendedora, a exemplo de determinação, criatividade, desejo de independência, aprendizagem contínua e utilização de redes de relacionamentos

  7. Influência da utilização da órtese de tornozelo durante atividades do voleibol: avaliação eletromiográfica Influencia de la utilización de la ortesis del tobillo durante las actividades del voleibol: evaluación electromiográfica Use of ankle bracing for volleyball activities

    OpenAIRE

    Jefferson Rosa Cardoso; Christiane de Souza Macedo Guerino; Marcelo Bannwart Santos; Thiago André Del Arco Mustafá; Anália Rosário Lopes; Marcelo Costa de Paula

    2005-01-01

    Entorse de tornozelo é a lesão aguda mais freqüentemente encontrada no voleibol. Com o intuito de prevenir a ocorrência de lesões de tornozelos, foram desenvolvidos equipamentos profiláticos, como as órteses. O objetivo deste estudo foi avaliar o desempenho dos músculos do tornozelo (tibial anterior, fibular longo e gastrocnêmio – porção medial e lateral) por meio da medida da atividade elétrica em diferentes atividades esportivas do voleibol (salto vertical e deslocamento lateral) com e...

  8. Influência do estado nutricional pregresso sobre o desenvolvimento da síndrome metabólica em adultos Influencia del estado nutricional previo sobre el desarrollo del síndrome metabólico en adultos Influence of prior nutritional status on the development of the metabolic syndrome in adults

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    Renata Maria Souza Oliveira

    2009-02-01

    Full Text Available FUNDAMENTO: O aumento da prevalência do excesso de peso em faixas etárias cada vez mais jovens pode levar ao desenvolvimento precoce de fatores de riscos cardiovasculares. OBJETIVO: Investigar a prevalência de síndrome metabólica em adultos jovens e a influência das condições de nascimento e estado nutricional na adolescência sobre este quadro. MÉTODOS: Foram avaliados cem indivíduos, em três fases da vida. A partir dos registros do banco de dados de alistamento do Tiro de Guerra, coletou-se peso, estatura e circunferência da cintura de todos os alistados nos anos de 1996, 97 e 99, para análise do estado nutricional na adolescência. A partir dos registros do mesmo banco, buscou-se informações sobre as condições de nascimento na maternidade e identificou-se os indivíduos, quando adultos. Na vida adulta, realizou-se avaliação antropométrica e bioquímica. A classificação da síndrome metabólica (SM se deu de acordo com proposta do NCEP-ATP III. O percentual de gordura corporal foi aferido por bioimpedância elétrica. A pressão arterial foi aferida por aparelho automático. A análise estatística foi realizada no software Sigma Stat 2.0, pFUNDAMENTO: El aumento de la prevalencia del exceso de peso en grupos de edad cada vez más jóvenes puede conducir al desarrollo precoz de factores de riesgo cardiovasculares. OBJETIVO: Investigar la prevalencia de síndrome metabólico en adultos jóvenes y la influencia de las condiciones de nacimiento y estado nutricional en la adolescencia sobre este cuadro. MÉTODOS: Se evaluaron cien individuos, en tres fases de la vida. A partir de los registros del banco de datos de alistamiento del Tiro de Guerra, se registraron peso, altura y circunferencia de la cintura de todos los alistados en los años de 1996, 1997 y 1999, para el análisis del estado nutricional en la adolescencia. A partir de los registros del mismo banco, se buscaron informaciones sobre las condiciones de nacimiento

  9. Influência da cor de pele auto-referida na prevalência da síndrome metabólica numa população urbana do Brasil Influencia del color de la piel autodeclarado en la prevalencia del síndrome metabólico en una población urbana de Brasil Influence of the self-reported skin color on the prevalence of metabolic syndrome in an urban Brazilian population

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    Paulo José Bastos Barbosa

    2010-01-01

    Full Text Available FUNDAMENTO: A síndrome metabólica tem uma elevada prevalência em diferentes partes do mundo, com variações entre diferentes grupos étnicos. OBJETIVO: Este estudo pretende explorar a influência da cor de pele auto-referida sobre a prevalência da SM. MÉTODOS: Estudo transversal, realizado em subgrupo populacional em Salvador, Brasil. Utilizou-se auto-definição de cor de pele (branca, parda e negra e o critério de SM do ATP-III. Foi usado o quiquadrado para tendência a fim de analisar gradiente das prevalências entre os grupos e a regressão logística para análises de associações. RESULTADOS: A prevalência geral da SM, ajustada por variáveis potencialmente confundidoras, não diferiu entre brancos (23,3%, pardos (23,3% e negros (23,4%,. A análise por sexo mostrou entre os homens redução da prevalência da SM dos brancos, 26,2% IC95%(20,7-31,7, em comparação aos negros, 17,5% IC95% (12,3-22,8, e uma prevalência intermediária entre os pardos, 21,9% IC95% (18,6 - 25,1, p tend= 0,002. Entre as mulheres, a tendência foi inversa, maior nas negras, 27,0% IC95% (22,2-31,8, e menor nas brancas, 20,5% IC95%(15,6-25,4, p tend= 0,02. Na análise multivariada da associação entre cor de pele e SM (branco=grupo de referência, a cor negra entre os homens foi fator de proteção, razão de prevalência (RP= 0,60 (0,36 - 0,97, enquanto que nas mulheres tendeu a ser fator de risco, RP= 1,33 (0,94 - 1,78. CONCLUSÃO: A prevalência da SM variou em função da cor de pele de modo inverso entre homens e mulheres. Ser negro foi fator de proteção entre homens e de risco nas mulheres.FUNDAMENTO: El síndrome metabólico tiene una elevada prevalencia en diferentes partes del mundo, con variaciones entre diferentes grupos étnicos. OBJETIVO: Este estudio pretende explorar la influencia del color de la piel autodeclarado sobre la prevalencia del SM. MÉTODOS: ESTUDio transversal, realizado en subgrupo poblacional en Salvador, Brasil. Se utiliz

  10. Influencia de la deshidratación osmótica y de la adición de cloruro de calcio en la conservación de kivis minimamente procesados Influência da desidratação osmótica e da adição de cloreto de cálcio na conservação de kiwis minimamente processados

    Directory of Open Access Journals (Sweden)

    Eliana Janet Sanjinez-Argandoña

    2010-05-01

    Full Text Available Este trabajo tubo como objetivo estudiar el efecto combinado de la deshidratación osmótica y la influencia del cloruro de calcio en rodajas de kivi sometidos al proceso mínimo. Muestras con y sin deshidratación osmótica fueron almacenadas a 5 °C en embalajes PET. La adición de cloruro de calcio fue realizada durante la deshidratación osmótica. Se evaluaron la pérdida de peso, acidez, sólidos solubles, pH, humedad, coliformes, hongos y levaduras en las muestras hasta 15 días de almacenamiento. La deshidratación osmótica consistió en la inmersión de las rodajas de kivi en solución de sacarosa a 60% y en solución de sacarosa (60% con adición de cloruro de calcio (0,1 M, ambos tratamientos se realizaron a temperatura ambiente (25 °C por 24 horas y relación fruta:solución de 1:5. Los resultados mostraron que el pré-tratamiento osmótico con adición de cloruro de calcio aumentó la vida útil hasta 15 días, en cuanto las rodajas tratadas por osmodeshidratación sin adición de sal presentaron vida útil de 12 días. Sensorialmente, los consumidores prefirieron las rodajas de kivi procesadas con pré-tratamiento osmótico y adición de cloruro de calcio.Este trabalho teve como objetivo estudar o efeito combinado da desidratação osmótica e a influência do cloreto de cálcio em rodelas de kiwi submetidas ao processamento mínimo. Amostras com e sem desidratação osmótica foram armazenadas a 5 °C em embalagem PET. A adição do cloreto de cálcio foi realizada durante a desidratação osmótica. Foram avaliados a perda de peso, acidez, sólidos solúveis, pH, umidade, coliformes, fungos e leveduras nas amostras até 15 dias de armazenamento. A avaliação microbiológica e sensorial definiu a vida de prateleira do produto. Os resultados mostraram que o pré-tratamento osmótico com adição de cloreto de cálcio aumentou a vida útil em até 15 dias, enquanto as rodelas tratadas por osmodesidratação, sem a adição do sal

  11. Decision theory on the quality evaluation of medical images; A teoria da decisao na avaliacao da qualidade da imagem medica

    Energy Technology Data Exchange (ETDEWEB)

    Lessa, Patricia Silva

    2001-10-01

    The problem of quality has been a constant issue in every organization.One is always seeking to produce more, to do it at a lower cost, and to do it with better quality. However, in this country, there is no radiographic film quality control system for radiographic services. The tittle that actually gets done is essentially ad hoc and superficial. The implications of this gap, along with some other shortcomings that exist in process as a whole (the state of the x-ray equipment, the adequate to use in order to obtain a radiography, the quality of the film, the processing of the film, the brightness and homogeneity of the viewing boxes, the ability of the radiologist), have a very negative impact on the quality of the medical image, and, as result, to the quality of the medical diagnosis and therapy. It frequently happens that many radiographs have to be repeated, which leads to an increase of the patient's exposure to radiation, as well as of the cost of the procedure for the patient. Low quality radiographs that are not repeated greatly increase the probability of a wrong diagnosis, and consequently, of inadequate therapeutical procedures, thus producing increased incidence of bad outcomes and higher costs. The paradigm proposed in order to establish a system for the measurement of the image's quality is Decision Theory. The problem of the assessment of the image is studied by proposing a Decision Theory approach. The review of the literature reveals a great concern with the quality of the image, along with an absence of an adequate paradigm and several essentially empirical procedures. Image parameters are developed in order to formalize the problem in terms of Decision Theory, and various aspects of image digitalisation are exposed. Finally, a solution is presented, including a protocol for quality control. (author)

  12. Activity evaluation from different native or irradiated with {sup 60} Co gamma rays snake venoms and their inhibitory effect on Leishmania (Leishmania) amazonensis; Avaliacao da atividade de diferentes venenos de serpentes, nativos ou irradiados, com radiacao gama de {sup 60} Co, quanto ao poder inibitorio do crescimento de Leishmania (Leishmania) amazonensis

    Energy Technology Data Exchange (ETDEWEB)

    Lourenco, Cecilia de Oliveira

    2000-07-01

    Cutaneous leishmaniasis is a disease, caused by Leishmania parasites, that occurs frequently in tropical and sub-tropical regions of the world. Skin lesions that could results in disfiguring aspect characterize it. The treatment is based on few drugs as antimony salts or pentamidine that are toxic with increasing resistance by the parasite. Alternative forms of disease treatment are in constant search, including natural components as snake venoms. Previous studies demonstrate that some components of snake venoms have an inhibitory effect against those parasites, including Leishmania species. Although snake venoms presented high toxicity, several methods have been described to detoxify most or some of their toxic components, with favorable results by the use of gamma irradiation. In this report we tested several native and irradiated snake venoms for inhibitory effect against Leishmania (Leishmania) amazonensis parasite and LLCMK{sub 2} mammalian cells, with enzymatic tests and electrophoresis. There are significant activity in Acanthophis antarcticus, Agkistrodon bilineatus, Bothrops moojeni, Bothrops jararaca, Hoplocephalus stephensi, Naja melanoleuca, Naja mossambica, Pseudechis australis, Pseudechis colletti, Pseudechis guttatus and Pseudechis porphyriacus, venom being inactive Pseudonaja textilis, Notechis ater niger, Notechis scutatus. Oxyuranus microlepidotus and Oxyuranus scutellatus venoms. After 2 KGy of {sup 60}Co irradiation most venom loses significantly their activity. Venoms with antileishmanial activity presented L-amino acid oxidase (L-AO) activity and showed common protein with a molecular weight about 60kDa in SDS-PAGE. These results indicate that L-AO activity in those venoms are probably related with antileishmanial effect. (author)

  13. Factores humanos y su influencia en la productividad

    OpenAIRE

    Mirza Cequea; Miguel Núñez Bottini

    2011-01-01

    La productividad es un concepto de naturaleza multidimensional en la que influyen ciertas características y comportamientos del individuo, dicha influencia implica procesos psicológicos y psicosociales complejos de cuantificar que constituyen los factores humanos. El objetivo general de la investigación, es analizar los factores humanos y su influencia en la productividad, vista desde la perspectiva de tres unidades diferentes; individuo, grupo y organización. Para tal fin, se plantearon ...

  14. Influência da utilização da órtese de tornozelo durante atividades do voleibol: avaliação eletromiográfica Influencia de la utilización de la ortesis del tobillo durante las actividades del voleibol: evaluación electromiográfica Use of ankle bracing for volleyball activities

    Directory of Open Access Journals (Sweden)

    Jefferson Rosa Cardoso

    2005-10-01

    Full Text Available Entorse de tornozelo é a lesão aguda mais freqüentemente encontrada no voleibol. Com o intuito de prevenir a ocorrência de lesões de tornozelos, foram desenvolvidos equipamentos profiláticos, como as órteses. O objetivo deste estudo foi avaliar o desempenho dos músculos do tornozelo (tibial anterior, fibular longo e gastrocnêmio – porção medial e lateral por meio da medida da atividade elétrica em diferentes atividades esportivas do voleibol (salto vertical e deslocamento lateral com e sem o uso de órtese de tornozelo. Foram avaliadas nove atletas de voleibol feminino infanto-juvenil, com idade variando entre 14 e 17 anos (: 15,8 ± 1,3, todas sem lesões prévias no membro dominante. Foi coletada a contração isométrica voluntária máxima (CIVM de cada músculo e, em seguida, a atividade eletromiográfica em diferentes situações com e sem a órtese, em ordem aleatória. A órtese utilizada possuía dois apoios laterais. O sinal eletromiográfico foi quantificado pela raiz quadrada da média (RMS e normalizado pela CIVM. Realizou-se a análise de variância de medidas repetidas para verificar a diferença da atividade elétrica dos músculos envolvidos em cada atividade, com e sem órtese, com significância estatística de 5% (p El esguince de tobillo es la lesión aguda mas frecuentemente encontrada en el voleibol. Con la intención de prevenir la aparición de estas lesiones se han desarrollados equipos profilácticos como las ortesis. El objetivo de este estudio fué el de evaluar el desempeño de los músculos del tobillo (tibial anterior, fibular largo y gastrocnemio – porciones medial y lateral por medio de la medida de la actividad eléctrica en diferentes actividades deportivas del voleibol (salto vertical y dislocamiento lateral con y sin el uso de ortesis de tobillo. Fueron evaluadas nueve atletas de voleibol femenino infanto-juvenil, con edades variables entre 14 y 17 años (: 15,8 ± 1,3 , todas sin lesiones pr

  15. Influência da criação de um serviço de tratamento da dor aguda nos custos e no consumo de drogas analgésicas na sala de recuperação pós-anestésica Influencia de la creación de un servicio de tratamiento del dolor agudo en los costos y en el consumo de drogas analgésicas en la sala de recuperación pos-anestésica Influence of acute pain management service on analgesic drugs cost and consumption in the post-anesthetic recovery unit

    Directory of Open Access Journals (Sweden)

    Marcos Emanuel Wortmann Gomes

    2003-12-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Sabe-se que a dor aguda pós-operatória apresenta grande influência na evolução dos pacientes cirúrgicos. Mobilização precoce, menor tempo de hospitalização, diminuição de custos e maior satisfação são resultados do adequado manuseio da dor. Observa-se uma tendência mundial ao surgimento de serviços especializados no tratamento da dor pós-operatória. O presente estudo visa descrever a influência da criação de um serviço de tratamento da dor aguda pós-operatória nos custos e no consumo de analgésicos na sala de recuperação pós-anestésica. MÉTODO: Durante os anos de 2000 e 2001 foi realizada coleta prospectiva de dados, através de sistemas informatizados especialistas da Controladoria de nossa instituição, relativos ao consumo e custo de drogas analgésicas na sala de recuperação e ao número de cirurgias realizadas. RESULTADOS: Houve um aumento do consumo e dos custos com analgésicos, assim como uma modificação no perfil de utilização dos mesmos. CONCLUSÕES: A criação do Serviço de Tratamento da Dor Aguda (STDA em nossa instituição determinou uma mudança no perfil dos analgésicos utilizados. Houve um aumento de consumo e nos custos dessas drogas, sugerindo que os pacientes tiveram um melhor controle da dor pós-operatória.JUSTIFICATIVA Y OBJETIVOS: Se sabe que el dolor agudo pos-operatorio presenta gran influencia en la evolución de los pacientes quirúrgicos. Movilización precoz, menor tiempo de hospitalización, diminución de costos y mayor satisfacción son resultados del adecuado manoseo del dolor. Se observa una tendencia mundial al surgimiento de servicios especializados en el tratamiento del dolor pos-operatorio. El actual estudio tiene por finalidad describir la influencia de la creación de un servicio de tratamiento del dolor agudo pos-operatorio en los costos y en el consumo de analgésicos en la sala de recuperación pos-anestésica. MÉTODO: Durante los a

  16. Evaluación de modelos 2D de variables geo-tecnológicas en un bloque de un yacimiento laterítico cubano. 2da parte: Influencia de la densidad de la red de muestreo en el variograma.

    Directory of Open Access Journals (Sweden)

    Arístides Alejandro Legrá-Lobaina

    2015-07-01

    Full Text Available El kriging es uno de los métodos más usados para modelar variables tecnológicas mineras y metalúrgicas, tales como el espesor de la corteza y las concentraciones de los elementos químicos de interés en los procesos metalúrgicos. Su correcta aplicación depende, en gran medida, de la determinación de los correspondientes variogramas que describen la variabilidad de cada propiedad como una función de la distancia y de las direcciones geométricas. En este trabajo se investiga la influencia de la densidad de la red de muestreo sobre los variogramas 2D de las variables: espesor (L y concentraciones de níquel (Ni, hierro (Fe y cobalto (Co en un bloque de un yacimiento laterítico cubano

  17. Influência da Mudança da Comissão de Arbitragem na Capacidade Física dos Árbitros de Futebol da CBF The physical capacity of CBF soccer referees is markedly changed by referee commission policy Influencia del cambio de la Comisión de Arbitraje en la capacidad física de árbitros de fútbol de la CBF

    Directory of Open Access Journals (Sweden)

    2007-09-01

    Full Text Available

    Este estudo teve como objetivo determinar o nível de aptidão física dos árbitros profissionais depois da mudança na Comissão de Arbitragem da Federação Paranaense de Futebol (FPF do Brasil. A amostra foi composta por 25 arbitros, do sexo masculino, sendo definido como critério de seleção, a participação do árbitro nos testes físicos de 2000 e 2004. A bateria de testes utilizada foi a estabelecida pela FIFA. A análise dos resultados mostrou que ao longo de quatro anos houve uma queda na capacidade aeróbica e anaeróbica, sendo esta redução atribuída a falta de seriedade da Comissão de Arbitragem no momento da aplicação dos testes, a retirada das aulas de condicionamento físico ofertado pela Associação dos Árbitros do Paraná e a ausência da prática de atividade física constante por parte dos árbitros.

    PALAVRAS-CHAVE: árbitro de futebol – aptidão física – teste físico – FIFA. This research study aimed at determining the level of physical aptitude among professional soccer referees after the changes in the Federal Referee Commission in the state of Paraná, Brazil. Twenty-five male referees were surveyed. The referees’ participation in the official physical aptitude tests taken in 2000 and 2004 was used as the criterium for choosing the surveyed subjects. The set of tests was based on the ones administered by FIFA. Resulsts analysis showed that in four years there was a decrease in aerobics and anaerobics capacity. This reduction was blamed on the lack of integrity from the Referee Commission when administering the tests, the removal of the physical conditioning classes previously offered by the Referee Association in the sate of Paraná, and the lack of constant physical activity practices by the referees. KEYWORDS: soccer referees – physical aptitude – physical tests – FIFA. Este estudio tuvo como objetivo determinar el nivel de aptitud física de los árbitros profesionales

  18. Imaging assessment of osteitis pubis; Avaliacao por imagem da osteite pubica

    Energy Technology Data Exchange (ETDEWEB)

    Lopes, Alexia Abuhid; Ferreira, Ana Paula Alves; Leite, Ana Rachel Albuquerque de Moura; Guido, Daniela Araujo; Rodrigues, Rogeria Nobre [Axial Centro de Imagem, Belo Horizonte, MG (Brazil)]. E-mail: ce@cidbh.com.br; Araujo, Rodrigo Otavio Dias [Minas Tenis Clube, Belo Horizonte, MG (Brazil); Lasmar, Rodrigo Campos Pace [Faculdade de Ciencias Medicas de Minas Gerais, Belo Horizonte, MG (Brazil). Curso de Fisioterapia

    2005-10-15

    Objective: to assess the physiopathological aspects of osteitis pubis and the findings seen on imaging methods, emphasizing the usefulness of Flamingo view radiographs and the diagnostic aspects of Magnetic resonance images. Material and Method: magnetic resonance images of ten patients (eight of them professional athletes) referring symptoms in the inguinal regional were retrospectively evaluated. For some of these patients Flaming view radiographs were performed. Results: in all studied patients magnetic resonance imaging was the only diagnostic method capable of showing the different phases os osteitis pubis, from acute cases with pubic bone marrow edematous changes to chronic cases with involvement of other pelvic joints. Flamingo view radiographs were performed in six patients and three of them were diagnosed with vertical pubis symphyseal instability greater than 2 mm of vertical displacement. This diagnosis was confirmed by instability tests using orthopedic manoeuvres. Conclusion: magnetic resonance imaging was the most helpful method for the diagnosis of different phases of osteitis pubis whereas conventional X-ray was inconclusive in the initial phases. Flamingo view radiographs were extremely important to show vertical instability of the pubic symphysis, which in combination with osteitis pubis can be the cause of failure of nonoperative treatment. (author)

  19. 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)

  20. Advances tomographic in evaluation of middle ear; Avancos tomograficos na avaliacao da orelha media

    Energy Technology Data Exchange (ETDEWEB)

    Anjos, Mayara Alves Pinheiro dos; Ledo, Mirelle D& #x27; arc Frota; Ribeiro, Marcio Duarte, E-mail: may_anjos@yahoo.com.br [Fundacao Bahiana para o Desenvolvimento das Ciencias, Escola Bahiana de Medicina e Saude Publica, Salvador, BA (Brazil)

    2011-07-01

    Computed tomography has a key role in the study of hearing, since through it can be evaluated structures not seen by otoscope. In many clinical situations the diagnosis through this test proves limited, being fundamental examination of the associated image reconstructions: multiplanar reconstruction, maximum intensity projection, and volume-rendering technique. The ossicular chain is a complex formed by the ossicles malleus, incus and stapes, situated in the middle ear; it is difficult to view them in orthogonals planes. This review article intends to demonstrate the importance of post-processing the image of the ossicular chain for a better representation of the anatomy and possible diseases. Reformatting of images helps, significantly, to a better visualization of these structures as related congenital malformations, vascular abnormalities, inflammatory conditions, neoplasia and traumas. (author)

  1. 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)

  2. MRI evaluation of fetal vitality and maturity; Avaliacao da vitalidade e maturidade fetal pela ressonancia magnetica

    Energy Technology Data Exchange (ETDEWEB)

    Rego, Salete J.F. [Instituto Nacional do Cancer, Rio de Janeiro, RJ (Brazil); Secaf, Eduardo [Sao Paulo Univ., SP (Brazil). Faculdade de Medicina; Magalhaes, Alvaro Cebrian A. [Sao Paulo Univ., SP (Brazil). Faculdade de Medicina, Dept. de Radiologia

    1995-05-01

    Assessment of fetal vitality is an essential part of feto-maternal medicine. In clinical practice, this is carried out by investigation of the fetal growth pattern and biochemical or biophysical tests of fetal heath. MRI has the ability of characterizing different soft tissues and is the only technique that can display in the uterus the process of physiological myelinization and may well present a noninvasive method to determine lung maturity. MRI is more powerful technique allowing more detailed visualization of the fetal brain, better images can be obtained of areas such as posterior fossa. The major advantage of MRI over imaging modalities is the potential for biochemical and metabolic studies and it will make an important contribution to obstetric research. (author)., 10 refs., 7 figs p.

  3. Integrity assessment of pipelines - additional remarks; Avaliacao da integridade de dutos - observacoes adicionais

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Luis F.C. [PETROBRAS S.A., Salvador, BA (Brazil). Unidade de Negocios. Exploracao e Producao

    2005-07-01

    Integrity assessment of pipelines is part of a process that aims to enhance the operating safety of pipelines. During this task, questions related to the interpretation of inspection reports and the way of regarding the impact of several parameters on the pipeline integrity normally come up. In order to satisfactorily answer such questions, the integrity assessment team must be able to suitably approach different subjects such as corrosion control and monitoring, assessment of metal loss and geometric anomalies, and third party activities. This paper presents additional remarks on some of these questions based on the integrity assessment of almost fifty pipelines that has been done at PETROBRAS/E and P Bahia over the past eight years. (author)

  4. Influência do trauma cirúrgico no comportamento dos níveis séricos de albumina após cirurgia da coluna vertebral Influencia del trauma quirúrgico sobre el comportamiento de los niveles de albúmina sérica después de cirugía de columna vertebral Influence of surgical trauma on the behavior of serum albumin after spine surgery

    Directory of Open Access Journals (Sweden)

    Rafael Paiva Luciano

    2010-12-01

    después del procedimiento. Se aplicó la prueba de t para muestras apareadas para evaluar el cambio (pre versus post en los parámetros albúmina, la hemoglobina y el hematocrito. La presencia de asociación entre el grado de variación en los niveles de albúmina ( 1g/dL y las variables de interés: la presencia de complicaciones, la necesidad de transfusión, el procedimiento realizado, la edad y el sexo del paciente y el diagnóstico fueron evaluados por el test del χ2 de Pearson o el cociente de probabilidad χ2, cuando necesario. RESULTADOS: la reducción media de esta proteína fue de 0,58 g/dL, que varía de 0 a 1,8 g/dL. De los pacientes, 78,2% tuvieron valores de albúmina en el postoperatorio por debajo del rango normal. Sólo dos pacientes presentaron complicaciones durante los 30 días de seguimiento. El grupo con la corrección de las deformidades presentó el 100% de pacientes con mayor o > 1g/dL. CONCLUSIÓN: hubo una influencia del trauma quirúrgico en la reducción de la albúmina sérica, en promedio, de 0,58 g/dL en las cirugías de la columna vertebral. No se puede asociar esta caída a las complicaciones en el postoperatorio después de 30 días de seguimiento de esos pacientes.OBJECTIVE: to evaluate the variation of serum albumin concentration in surgery of the spine and its relation to clinical effects in the postoperative. METHODS: prospective observational study on the values of serum albumin of 55 patients undergoing spine surgery.Blood samples were collected one day before and 24 hours after the procedure. The paired t test was performed to evaluate the change parameters albumin, hemoglobin and hematocrit. The presence of association between the degree of variation in levels of albumin (1 g/dL and the variables of interest: complications, transfusions, procedures performed, patients' age and sex and diagnosis were assessed by χ2 test or the χ2 likelihood ratio when appropriate. RESULTS: the average reduction of this protein was of 0.58 g

  5. Influência da procainamida sobre o bloqueio neuromuscular produzido pelo rocurônio e investigação sobre o mecanismo de ação da procainamida na junção neuromuscular Influencia de la procainamida sobre el bloqueo neuromuscular producido por el rocuronio e investigación sobre el mecanismo de acción de la procainamida en la junción neuromuscular Influence of procainamide on the neuromuscular blockade caused by rocuronium and investigation on the mechanism of action of procainamide on the neuromuscular junction

    Directory of Open Access Journals (Sweden)

    Thalita Duque Martins

    2007-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A potencialização da procainamida sobre o bloqueio neuromuscular produzido pela d-tubocurarina já está comprovada, porém o mecanismo é controverso. O objetivo do estudo foi avaliar a influência da procainamida no bloqueio neuromuscular produzido pelo rocurônio e investigar os mecanismos desta interação. MÉTODO: Foram utilizados 15 ratos (250 a 300 g em preparação descrita por Bülbring. Formaram-se os seguintes grupos (n = 5 cada: procainamida - 20 µg.mL-1 (Grupo I; rocurônio - 4 µg.mL-1 (Grupo II e rocurônio - 4 µg.mL-1 e procainamida - 20 µg.mL-1 (Grupo III. Avaliaram-se: 1 a amplitude das contrações musculares sob estimulação indireta em cada grupo, antes e após a adição dos fármacos; 2 os potenciais de placa terminal em miniatura (PPTM; 3 a eficácia da 4-aminopiridina na reversão do bloqueio neuromuscular. O mecanismo da interação foi estudado em Biventer cervicis (n = 5 e diafragma de rato desnervado (n = 5, observando-se a influência da procainamida na resposta à acetilcolina antes e após a adição da procainamida. RESULTADOS: A procainamida isoladamente não alterou as respostas neuromusculares. O bloqueio produzido com o Grupo III foi de 68,6% ± 7,1%, com diferença significativa (p = 0,0067 em relação ao Grupo II (10,4% ± 4,5%, revertido pela 4-aminopiridina. A procainamida ocasionou aumento na freqüência dos PPTM, seguido de bloqueio revertido pela 4-aminopiridina. Em Biventer cervicis a procainamida aumentou a resposta à ação de contração da acetilcolina, resultado não observado com o diafragma desnervado. CONCLUSÕES: A procainamida potencializou o bloqueio produzido pelo rocurônio. As alterações observadas com PPTM e Biventer cervicis identificaram ação pré-sináptica. O antagonismo da 4-aminopiridina sobre o bloqueio dos PPTM sugeriu dessensibilização dos receptores pela procainamida.JUSTIFICATIVA Y OBJETIVOS: La potenciación de la procainamida sobre

  6. Evaluation of skin dose in tomographic radiographs of temporomandibular joint; Avaliacao da dose pele em radiografias tomograficas da articulacao tempromandibular

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, S.B.; Chaves, F.C.; Rocha, F.E.F.C. [Pernambuco Univ., Recife, PE (Brazil). Dept. de Clinica e Odontologia Preventiva; Khoury, H.J. [Pernambuco Univ., Recife, PE (Brazil). Dept. de Energia Nuclear]. E-mail: khoury@elogica.com.br

    2001-07-01

    The aim of this study was to evaluate the skin entrance dose, in patients with temporomandibular joint (TMJ) dysfunctions submitted to computerized tomography. For this purpose, in a private medical establishment, in the city of Recife-Pe/Br, 40 patients were evaluated, in according to radiation doses received in eyes, thyroid and TMJ regions. The value found for eye region range from 0.004 to 0.125 mGy, for thyroid range from 0.002 to 0.113 mGy and for TMJ range from 0.112 to 0.541 mGy.

  7. 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; and others

    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)

  8. Micromorphological analysis on the influence of the soil mineral composition on short-term aggregation in semi-arid Mediterranean soils Analisis micromorfológico de la influencia de la composición mineral del suelo sobre la agregación a corto plazo en suelos semiáridos de clima mediterráneo Análise micromorfológica da influencia da composição mineral do solo na agregação a curto prazo em solos semiáridos de clima mediterrânico

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    Inigo Virto

    2013-07-01

    150-?m in equivalent diameter, some porosity > 150 ?m was observed only in macroaggregates from the decarbonated soil. These observations allow hypothesizing that the mechanisms responsible for aggregates stabilization and/or formation are different in the two soils, and that they result in different physical characteristics of soil aggregates. The implications of such differences on air and water flow rates within aggregates, and thus on the soil microbial activity and organic matter decomposition, as well as on soil erodibility, need to be studied and accounted for when evaluating the effect of soil management and other practices on soil quality in semi-arid Mediterranean agrosystems.La formación de agregados en el suelo es el resultado de la interacción entre los componentes orgánicos y minerales del suelo. Sin embargo, aunque es sabido que la naturaleza de la fracción mineral puede interferir en la agregación, su influencia en suelos semiáridos en regiones de clima mediterráneo es aún poco conocida. En este estudio se utilizaron técnicas de análisis micromorfológico para estudiar agregados formados en una incubación de 28 días de muestras del horizonte superficial Ap de dos suelos cultivados contiguos que difieren únicamente en su mineralogía (un Palexeralf descarbonatado con 21,5% de arcilla y un Typic Calcixerept rico en carbonatos con 20,9% de arcilla antes de la descarbonatación, que se reduce a 10,4% tras la eliminación de los carbonatos. Los dos suelos pertenecen al mismo campo de cultivo, por lo que han tenido un manejo similar durante décadas. En los dos suelos, se desagregaron completamente muestras frescas de suelo, para obtener las fracciones 2 mm formados durante la incubación se cuantificaron y separaron los días 3, 7, 14, 21 y 28, y se utilizaron para la preparación de láminas delgadas. Estos macroagregados fueron, en los dos suelos, más abundantes el día 3 y su número decreció con el tiempo de incubación, lo que indica una

  9. Influencia do indice de massa corporal no equilibrio e na configuracao plantar em obesos adultos

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    Liu Chiao Yi

    2014-01-01

    Full Text Available INTRODUÇÃO: A obesidade é uma doença crônica degenerativa multifatorial que pode levar a alterações do sistema musculoesquelético, como mudança do centro de gravidade e sobrecarga mecânica sobre os membros inferiores. OBJETIVOS: Correlacionar o índice de massa corporal (IMC com o equilíbrio corporal e verificar associação entre o IMC e a configuração plantar. MÉTODOS: Foram avaliados 30 obesos, de ambos os gêneros, com IMC maior ou igual a 30 Kg/m². Inicialmente, os voluntários foram submetidos às avaliações de medidas antropométricas a fim de calcular o valor do IMC. Em seguida, foram submetidos ao teste de equilíbrio corporal estático Balance Error Scoring System (BESS e a plantigrafia para a identificação da impressão plantar. Por meio do método de Viladot, os voluntários foram classificados em grupos: pé plano (GPP, pé cavo (GPC e pé neutro (GPN. A correlação entre as variáveis IMC e BESS foi calculada por meio do coeficiente de correlação linear de Pearson e associação entre o IMC e a configuração plantar foi realizada por meio da análise de variância (Anova. Para todas as análises, nível de significância considerado foi p < 0,05. RESULTADOS: Os valores da correlação entre o IMC e o BESS foram r = - 0,1 e p = 0,59. Os valores da associação do IMC entre GPN - GPP; GPN - GPC; GPP - GPC foram respectivamente: p = 0,76; p = 0,001; p = 0,07. CONCLUSÃO: O índice de massa corporal de adultos obesos não influencia o equilíbrio corporal, porém influencia na configuração plantar.

  10. Influencia de Piaget en el estudio del desarrollo moral

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    Cristina Villegas de

    1998-01-01

    Full Text Available Se analiza la concepción de Piaget acerca de la moral y su forma de abordar la investigación acerca del desarrollo moral. Se ponen de presente algunas inconsistencias en la posición de Piaget. Se señala su influencia particularmente en Koh1berg y Habermas.

  11. Influencia de Piaget en el estudio del desarrollo moral

    OpenAIRE

    Cristina Villegas de

    1998-01-01

    Se analiza la concepción de Piaget acerca de la moral y su forma de abordar la investigación acerca del desarrollo moral. Se ponen de presente algunas inconsistencias en la posición de Piaget. Se señala su influencia particularmente en Koh1berg y Habermas.

  12. Factores humanos y su influencia en la productividad

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    Mirza Cequea

    2011-01-01

    Full Text Available La productividad es un concepto de naturaleza multidimensional en la que influyen ciertas características y comportamientos del individuo, dicha influencia implica procesos psicológicos y psicosociales complejos de cuantificar que constituyen los factores humanos. El objetivo general de la investigación, es analizar los factores humanos y su influencia en la productividad, vista desde la perspectiva de tres unidades diferentes; individuo, grupo y organización. Para tal fin, se plantearon tres modelos diseñados con relaciones causales diferentes, a objeto de determinar el modelo que mejor explica esta influencia. La metodología utilizada fue explicativa de tipo experimental. El método aplicado fue el hipotético deductivo. Se compararon tres modelos utilizando la técnica de modelos rivales de la metodología de Ecuaciones Estructurales. Este criterio permite contrastar modelos a fin de determinar el de mejor ajuste. El resultado determinó que los tres modelos presentan ajustes razonables de aceptación y explican las relaciones causales planteadas y su influencia en la productividad. Del análisis de los ajustes de los tres modelos se concluye que el Modelo B es el que mejor explica la relación de los factores humanos y la productividad

  13. Evaluation of the influence of management fads in adoption of management tools in supermarket chains of Santa Catarina Evaluación de la influencia de los modismos gerenciales en la adopción de herramientas de gestión en las redes de supermercados de Santa Catarina Avaliação da influência dos modismos gerenciais na adoção de ferramentas de gestão nas redes de supermercados de Santa Catarina

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    Fernando Filardi

    2011-06-01

    ón Catarinense de Supermercados (ACATS, de donde fueron seleccionadas las diez mayores redes de supermercados de Santa Catarina. Los resultados revelan que los modelos de gestión de estas organizaciones son construidos de acuerdo con las necesidades del momento y sin planeamiento; que las empresas investigadas presentan una gestión familiar, conservadora y reactiva, así como una fuerte coalición entre sus componentes; y que las herramientas de gestión adoptadas por la mayor parte de este universo presentaron una homogeneidad en su origen, bien como en las razones por las cuales fueron adoptadas, revelando fuerte influencia del modismo empresarialA busca constante pela conquista e retenção do cliente originou um mercado literário de curandeiros e gurus da gestão, que ganharam generosos espaços nas livrarias vendendo fórmulas mágicas na tentativa de transformar a gestão de negócios em ciência exata. Este estudo investigou a situação das maiores redes de supermercados de Santa Catarina, tendo como objetivo verificar quais critérios levaram seus gestores a escolher as ferramentas de gestão adotadas e se há influência do modismo nessa escolha. A pesquisa foi conduzida por meio de um estudo multicaso e contou, como instrumentos de coleta de dados, com entrevistas semiestruturadas e análise documental. A amostra foi delimitada com base nos dados fornecidos pela Associação Catarinense de Supermercados (ACATS, de onde foram selecionadas as dez maiores redes de supermercados de Santa Catarina. Os resultados revelam que os modelos de gestão dessas organizações são construídos de acordo com as necessidades de momento destas e sem planejamento; que as empresas pesquisadas apresentam uma gestão familiar, conservadora e reativa, assim como uma forte coalizão entre seus componentes; e que as ferramentas de gestão adotadas pela maior parte desse universo apresentaram uma homogeneidade na sua origem, bem como nas razões pelas quais foram adotadas, revelando forte

  14. A influência do desenvolvimento profissional e da identificação organizacional na satisfação no trabalho = The influence of professional development and organizational identification on job satisfaction = La influencia del desarrollo profesional y de la identificación organizacional en la satisfacción en el trabajo

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    Mourão, Luciana

    2014-01-01

    Full Text Available Buscar atrair e manter trabalhadores qualificados tem sido um desafio para as organizações atuais. O objetivo deste estudo foi verificar o impacto do desenvolvimento profissional e da identificação organizacional sobre a satisfação no trabalho. Participaram da pesquisa 1. 302 trabalhadores das cinco regiões do País. O questionário continha três escalas, uma para cada construto, todas com bons indicadores de validade psicométrica. Para a testagem da hipótese da pesquisa, foram realizadas análises de correlação de Pearson e regressão hierárquica. Os resultados mostraram que quanto maior o desenvolvimento profissional maior será a percepção de satisfação no trabalho (β=0,39 e que apenas a identificação organizacional por imitação prediz a satisfação (β=0,56, tendo sido a identificação por afinidade excluída do modelo. Os resultados apontam para a importância de aumentar o investimento no desenvolvimento profissional e na identificação organizacional para ampliar a satisfação no trabalho. Foram apontadas limitações, contribuições e implicações práticas do estudo

  15. Uso de la bicicleta como medio de transporte: influencia de los factores psicológicos: una revisión de la literatura = O uso da bicicleta como meio de transporte: influência de fatores psicológicos: uma revisão de literatura = Bicycle use as a means of transportation: influence of psychological factors: a literature review

    Directory of Open Access Journals (Sweden)

    Caballero, Romina

    2014-01-01

    Full Text Available O uso massivo de transporte sustentável, tais como andar de bicicleta, exige tanto mudanças na infra-estrutura das cidades, quanto uma mudança de comportamento. Assim, é preciso conhecer as motivações que determinam a escolha do transporte. O objetivo foi analisar quais são as variáveis psicológicas que predizem melhor o uso de bicicletas como modo de transporte, através de uma revisão sistemática da literatura dos últimos 10 anos. Os resultados da análise indicaram que a escolha da bicicleta como meio de transporte está determinada por processos intencionais. A intenção de usar esse meio principalmente está associada com o apoio social percebido, com a percepção da capacidade de realizar o comportamento (autoeficácia e, em menor medida, com uma atitude positiva em relação a ele. Porém, uma vez que andar de bicicleta tornou-se um comportamento habitual, a influência dos processos racionais enfraquece. Isto sugere que a formulação de políticas que procuram aumentar a mobilidade sustentável deve contemplar estratégias diferentes segundo a frequência de uso deste modo de transporte

  16. Influência da doença de Alzheimer na percepção de qualidade de vida do idoso Influencia de la enfermedad de Alzheimer en la percepción de calidad de vida del anciano Alzheimer's disease influence on the perception of quality of life from the elderly people

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    Keika Inouye

    2010-12-01

    Full Text Available Este estudo tem por objetivo comparar a percepção geral e de cada dimensão de qualidade de vida (QV de um grupo de idosos com Doença de Alzheimer (DA (n=53 com as de um grupo semelhante quanto às variáveis sociodemográficas (n=53. As medidas de QV foram obtidas por meio da Escala de Avaliação da Qualidade de Vida na Doença de Alzheimer, e os dados foram digitados em um banco de dados no programa Statistical Program for Social Sciences, para a realização de análises estatísticas (descritivas, teste-t de Student, Mann-Whitney e Qui-Quadrado. Os resultados revelaram que todas as dimensões de QV medidas pelo instrumento eram estatisticamente inferiores no grupo de idosos com DA. Quanto aos escores totais de QV, a média obtida foi de 40,18 pontos para idosos sem DA e de 29,32 para idosos com DA, t(104 = 9,449, pEste estudio tuvo como objetivo comparar la percepción general y de cada dimensión de calidad de vida (CV de un grupo de ancianos con Enfermedad de Alzheimer (EA (n=53 con grupo semejante en cuanto a sus variables sociodemográficas (n=53. Las medidas de CV fueron obtenidas a través de la Escala de Evaluación de Calidad de Vida en la Enfermedad de Alzheimer, los datos fueron procesados como base de datos utilizándose el programa Statistical Program for Social Sciences, para la realización de análisis estadísticos (descriptivos, tests-t de Student, Mann-Whitney y Qui Cuadrado. Los resultados revelaron que todas las dimensiones de CV medidas por el instrumento eran estadísticamente inferiores en el grupo de ancianos con EA. Respecto de los puntajes totales de CV, la media obtenida fue de 40,18 puntos para ancianos sin EA y de 29,32 para ancianos con DA, t(104 = 9,449, p This study aims to compare the general perception and each dimension of the quality of life (QoL of an elderly group with Alzheimer's Disease (AD (n=53 to those of a similar group regarding the socio-demographic variables (n=53. The QoL measures were

  17. Evaluation of the thermoluminescent detector answers of CaSO{sub 4}:Dy, LiF:Mg,Ti and micro LiF:Mg,Ti in photon clinical beams dosimetry using water simulator; Avaliacao da resposta de detectores termoluminescentes de CaSO4:Dy, LiF:Mg,Ti e microLiF:Mg,Ti na dosimetria de feixes clinicos de fotons utilizando simulador de agua

    Energy Technology Data Exchange (ETDEWEB)

    Matsushima, Luciana C.; Veneziani, Glauco R.; Campos, Leticia L., E-mail: lmatsushima@usp.b, E-mail: veneziani@ipen.b, E-mail: lcrodri@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (GMR/IPEN/CNEN-SP), Sao Paulo, SP (Brazil). Gerencia de Metrologia das Radiacoes; Sakuraba, Roberto K.; Cruz, Jose C. da, E-mail: rsakuraba@einstein.b, E-mail: jccruz@einstein.b [Sociedade Beneficente Israelita Brasileira, Sao Paulo, SP (Brazil). Hospital Albert Einstein (HAE)

    2011-10-26

    This paper perform the comparative study of thermoluminescent answer of calcium sulfate dosemeter doped with dysprosium (DaSO{sub 4}:Dy) produced by the IPEN, Sao Paulo, with answer of lithium fluoride dosemeters doped with magnesium and titanium (LiF:Mg, Ti) in the dosimetry of clinical beams of photons (6 and 15 MV) by using water simulator object. Dose-answer curves were obtained for gamma radiation of cobalt-60 in the air and in conditions of electronic equilibrium (plate of PMMA), and clinical photons of CLINAC model 2100C accelerators of the two evaluated hospitals: Hospital das Clinicas of the Faculty of Medicine of Sao Paulo university and Hospital Albert Einstein. It was also evaluated the sensitivity and reproduction of the three dosemeters

  18. A FORMAÇÃO REFERENCIAL DO COMPORTAMENTO ORGANIZACIONAL NO ENFOQUE DA GESTÃO ARQUIVÍSTICA

    OpenAIRE

    Carolina Izidoro Roncato; Rosangela Formentini Caldas

    2012-01-01

    A aplicabilidade das teorias administrativas explica o processo de mudança e adaptação das unidades informacionais e refletem a influencia que o ambiente exerce sobre as organizações. O foco em estudos que otimizam os recursos institucionais, promovem uma compreensão da área da CI determinando sua essencial função na sociedade do conhecimento. O ambiente organizacional sofre influencias diretas do processo administrativo do trabalho e a solução de conflitos promove o êxito das organizações. N...

  19. Influência da insuflação de gás traqueal sobre a capnografia de pacientes anestesiados Influencia de la insuflación de gas traqueal sobre la capnografía de pacientes anestesiados Influence of tracheal gas insufflation during capnography in anesthetized patients

    Directory of Open Access Journals (Sweden)

    Ana Carolina Ortiz

    2008-10-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A insuflação de gás traqueal (TGI - Tracheal Gas Insufflation é uma técnica que consiste em injetar gás na traquéia (geralmente oxigênio. É usada em pacientes portadores de síndrome da angústia respiratória do adulto para reduzir a capnometria. Em Anestesiologia, a redução da capnometria pode ser útil, mas não existem estudos sobre a redução da capnometria com o uso da TGI. O presente estudo avaliou as alterações proporcionadas pela TGI sobre a capnografia em pacientes anestesiados. MÉTODO: Foram avaliados prospectivamente 11 pacientes, 18 a 60 anos, ASA I ou II, não-pneumopatas. Após a intubação traqueal foi inserido cateter para TGI a 2 ou 3 cm da carina. Os pacientes foram submetidos à ventilação controlada a volume. Registrou-se a curva de capnografia volumétrica durante 20 minutos e colheu-se amostra sangüínea para medir PaCO2. Após 20 minutos de TGI registrou-se a curva de capnografia e foi colhida nova amostra sangüínea para medir PaCO2. Avaliou-se pressão parcial de CO2 no fim da expiração (P ET CO2 e PaCO2, antes e após TGI. Observou-se curva de capnografia, antes e durante TGI. RESULTADOS: A PaCO2 e P ET CO2 sem TGI foram, respectivamente (média ± desvio-padrão: 33,48 ± 6,81 e 36,91 ± 6,54 mmHg e, após TGI, 33,85 ± 8,31 e 36,55 ± 7,93 mmHg, não havendo diferença estatística entre os valores antes e após TGI, tanto para a PaCO2 quanto para a P ET CO2 (p = 0,65 e 0,82. A curva de capnografia apresentou alterações na fase de expiração do ar alveolar. CONCLUSÕES: A aplicação da TGI não resultou em diminuição da PaCO2 e nem na P ET CO2, porém alterou a morfologia da curva de capnografia.JUSTIFICATIVA Y OBJETIVOS: La insuflación de gas traqueal (TGI - Tracheal Gas Insufflation es una técnica que consiste en inyectar gas en la tráquea (generalmente oxígeno. Se usa en pacientes portadores del síndrome de la angustia respiratoria del adulto para reducir

  20. A estratégia de marcas próprias influencia a gestão da cadeia de suprimentos? Insights para o setor atacadista brasileiro Do own brand strategies influence the supply chain management? Insights from the Brazilian wholesaling sector

    Directory of Open Access Journals (Sweden)

    Éderson Luiz Piato

    2008-12-01

    Full Text Available A evolução do setor atacadista nos últimos anos possibilitou que estratégias mercadológicas influenciassem significativamente suas funções empresariais tradicionais da cadeia de suprimentos. Percebe-se, na literatura, forte relação entre a estratégia de marcas próprias e as atividades da gestão de suprimentos (em especial, compras, uma vez que o desenvolvimento de marcas próprias transforma o atacadista em comprador criterioso que procura selecionar e avaliar os fornecedores (fonte de suprimento, para obter o melhor desempenho dos produtos que carregam sua marca. Nesse sentido, o principal objetivo deste artigo é analisar o impacto da estratégia de marcas próprias do atacado na atividade de gestão de suprimentos (compras, apresentando e discutindo especificamente o processo de seleção e avaliação dos fornecedores (fabricantes. A partir de um estudo multicaso com três atacadistas e duas indústrias fornecedoras, foi possível demonstrar as principais características do processo de seleção e avaliação dos fornecedores de marcas próprias.The evolution of the wholesaling sector in the past few years has made possible that some traditional corporate functions of the supply chain were significantly influenced by its marketing strategies. The literature shows a deep relation between own brand strategies and the activities of supply management. It happens because the development of own brands makes the wholesaler a very careful buyer that aims at selecting and evaluating the suppliers in order to obtain the best performance of the own brand products. In this way, the main objective of this paper is to analyse the impact of the supply management in the own brand strategy in wholesalers, analysing the procedures and criteria used by wholesalers to select and evaluate own brand suppliers. From a multicase study with three wholesalers and two suppliers, all Brazilian companies, it is possible to demonstrate the main

  1. Influência da comunicação no processo de acreditação hospitalar Influencia de la comunicación en el proceso de acreditación hospitalaria Influence of communication in the hospital accreditation process

    Directory of Open Access Journals (Sweden)

    Bruna Figueiredo Manzo

    2013-02-01

    Full Text Available O objetivo do estudo foi analisar, na perspectiva de profissionais, as principais barreiras de comunicação vivenciadas no decorrer do processo de acreditação em um hospital privado de médio porte de Belo Horizonte. Trata-se de um estudo qualitativo, envolvendo 34 profissionais de saúde de categorias diferentes. Os resultados da pesquisa mostraram que a escassez de informação, a falta de objetividade, clareza e integridade no repasse de conhecimento favorecem a ruptura da prestação de serviços de qualidade. A comunicação organizacional é uma ferramenta eficaz para subsidiar mudanças importantes nas empresas, como o alcance da acreditação hospitalar. Articulando a mudança de forma concisa e clara no que se refere à comunicação, poderá ser alcançado perenemente o padrão de qualidade.El objetivo de la investigación era examinar la perspectiva de los profesionales, las barreras principales de comunicación experimentadas durante el proceso de acreditación en un hospital particular medio en Belo Horizonte. Se trata de un estudio cualitativo envolviendo 34 profesionales de la salud de las diferentes categorías. Los resultados del estudio mostraron que la escasez de información, la falta de objetividad, integridad y claridad en la transferencia del conocimiento favorece la ruptura de la prestación de servicios de calidad. La comunicación organizacional es un instrumento eficaz para respaldar los cambios importantes en las empresas, como es el alcance de la acreditación hospitalaria. Al correlacionar el cambio de forma concisa y clara, con lo que se refiere a la comunicación, se puede lograr estándares de calidad perenne.The research objective was to examine the perspective of professionals, the major communication barriers experienced during the Accreditation process in a medium sized private hospital in Belo Horizonte. This is a qualitative study involving 34 health professionals from different categories. The survey

  2. La influencia de la convivencia escolar en el nivel de inclusión educativa, en estudiantes de bachiller

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    MSc. Rolando Medina Peña

    2016-04-01

    Full Text Available La inclusión educativa muchas veces no es bien entendida y se interpreta de diversas formas en el mundo. Desde el campo educativo se connota, a la manera en que la ins­titución educacional da respuesta a la diversidad y, tiene relación directa con el término necesidades educativas es­peciales (NEE. La investigación examina la influencia del código de convivencia escolar en el nivel de inclusión edu­cativa, a partir de la asunción de las necesidades educati­vas especiales de algunos de sus estudiantes. Se perfec­ciona la comprensión de las NEE, de inclusión educativa y los recursos educativos que se ajustan a las peculiaridades del desarrollo humano.

  3. Influencia da adubação nitrogenada e idade de corte sobre os teores de proteína bruta e fibra em detergente neutro de três cultivares de capim-elefante (Influence of nitrogen fertilization and age of cutting on the crude protein and neutral detergent fiber contents of three elephant-grass varieties

    Directory of Open Access Journals (Sweden)

    João Avelar Magalhães

    2009-04-01

    Full Text Available ResumoEste trabalho foi realizado para avaliar os efeitos de três doses denitrogênio (150, 300 e 450 kg de N/ha e cinco idades de corte (28, 35, 42, 56 e 84 dias sobre os teores de proteína bruta (PB e fibra em detergente neutro (FDN do capim-elefante cvs. Napier, Pioneiro e Roxo. O delineamento experimental foi em blocos casualizados, em parcelas subsubdivididas e quatro repetições. As gramíneas foram plantadas em covas, em área irrigada por aspersão fixa de baixa vazão. O corte de uniformização foi realizado 93 dias após o plantio, e em seguida foram aplicados os níveis de nitrogênio, usando-se uréia. Foi observado que a cv. Roxo apresentou o maior teor médio de PB, enquanto a Napier apresentou o menor teor. Os maiores teores de PB foram obtidos através da utilização de 450 e 300 kg de N/ha. A análise de regressão indicou linearidade negativa dos efeitos da idade sobre os teores de PB da planta. Os teores de FDN foram crescentes em função da idade de corte. A análise de variância nãodetectou diferenças significativas entre as cultivares testadas e nem nos níveis de nitrogênio aplicados sobre os teores de FDN.SummaryThis experiment was conducted to evaluate the effects of three nitrogen levels (150; 300 and 450 kg of N/ha and five cutting ages (28, 35, 42, 56 and 84 days on the crude protein (CP and neutral detergent fiber (NDF contents of the elephant-grass vars. Napier, Pioneiro and Roxo. The experimental design was randomized blocks, with treatments arranged as a split-split-plot and four repetitions. The grassy varieties were established in hollows, in area irrigated for fixed aspersion of low outflow. The uniformization cut was carried through 93 days after the plantation, and after that the nitrogen levels had been applied, using themselves urea. TheCP content had been gotten from the nitrogen determination, for the method of Kjeldahl (N x 6.25. It was observed that the var. Roxo presented the highest CP

  4. Influência da maturação sexual, idade cronológica e índices de crescimento no limiar de lactato e no desempenho da corrida de 20 minutos Influencia de la madurez sexual, edad cronológica e índices de crecimiento en el límite de lactato y en el desempeño en carreras de velocidad de 20 minutos Influence of sexual maturation, chronological age and growth indices in lactate threshold and performance in the 20 minutes running

    Directory of Open Access Journals (Sweden)

    Deivis Elton Schlickmann Frainer

    2006-06-01

    Full Text Available Crianças e adolescentes apresentam, em uma determinada carga, menores concentrações de lactato [la] do que os adultos; especula-se que essas diferenças são ligadas a aspectos maturacionais. O objetivo deste estudo foi verificar a influência da maturação sexual, idade cronológica (I e índices de crescimento (IC - massa corporal, estatura e somatório de dobras cutâneas subescapular e tricipital na velocidade do limiar de lactato na concentração fixa de lactato ([la] de 2,5mmol.l-1 (V2,5 e na corrida de 20 minutos (V20. Trinta e três meninos participantes de escolas de esportes foram submetidos a: 1 avaliação antropométrica e avaliação da maturação sexual através dos índices de Tanner (maturação sexual de órgãos genitais e maturação sexual de pêlos púbicos; 2 teste progressivo descontínuo de 3 x 800m (pista de atletismo para determinar V2,5; e 3 corrida de 20 minutos para determinar a V20 e a [la] final. Não foi encontrada associação entre maturação sexual, idade cronológica e indicadores de crescimento com V2,5. Somente a estatura se mostrou associada com V20. Assim, outras variáveis de desempenho, fisiológicas ou biomecânicas, podem influenciar mais no limiar de lactato e na corrida de 20 minutos, do que as variáveis de crescimento durante a adolescência.Niños y adolescentes presentan en determinada carga menores concentraciones de lactato [la] que los adultos; se especula que esas diferencias están relacionadas a los aspectos de madurez. El objetivo de este estudio ha sido verificar la influencia de la madurez sexual, edad cronológica (I e índices de crecimiento (IC - masa corporal, estatura y la suma de dobleces cutáneos subescapular y tricipital en la velocidad del Límite de Lactato en concentración fija de lactato ([la] de 2,5 mmol.l¹ (V2,5 y en carreras de 20 minutos (V20. Treinta y tres niños participantes de escuelas de deportes fueron sometidos a: 1 evaluación antropométrica y

  5. Influencia de la congelación sobre la osmolalidad urinaria en perros sanos

    Directory of Open Access Journals (Sweden)

    Barrera-Chacón, R.

    2009-05-01

    Full Text Available ResumenLa gravedad urinaria específica (GUE y la osmolalidad urinaria (OsmUson herramientas utilizadas para medir la capacidad de concentraciónrenal. Perros con un estado normal de hidratación presentan una GUEentre 1.015-1.045 y una OsmU de 800-2500 mOmol/Kg. La determinaciónde OsmU es el mejor método para evaluar la concentración urinaria yaque la GUE depende, no sólo del número de partículas presentes en laorina, sino también de su peso molecular. Esto es de suma importancia en pacientes con daño renal. Con el fin de determinar si la congelación tiene alguna influencia sobre la osmolalidad urinaria, se realizó el presente estudio. Este trabajo se llevó a cabo a partir de 12 muestras de orina de pacientes sanos a las que se les determinó sucesivamente la OsmU tras 5 congelaciones. Los resultados obtenidos indican que la congelación no altera sustancialmente la osmolalidad urinaria.

  6. INFLUENCIA DE LA INGENIERÍA EN EL DESARROLLO COMERCIAL DE LA HUMANIDAD: EDAD MEDIA

    Directory of Open Access Journals (Sweden)

    ANA MARÍA SARAVIA

    2010-01-01

    Full Text Available Esta segunda entrega de la influencia de la ingeniería en la historia humana es un análisis de dicha relación en la Edad Media, conocida como la franja en la historia de la humanidad comprendida entre los siglos V y XV, y enmarcada entre dos acontecimientos: la caída del Imperio Romano y el inicio del Renacimiento. Se utilizó por primera vez la palabra “Ingeniero”, y la base de desarrollo fue la construcción de una civilización compleja que se basó primordialmente en la fuerza no humana, en lugar de la de esclavos o peones. A partir del siglo XI, cuando las ciudades cobraban importancia y se hacían más populosas, se incrementó la actividad comercial adormilada por mucho tiempo. Las ciudades se convirtieron en centros de enseñanza, gobierno y religión, pero sobre todo fueron clave para el surgimiento de un nuevo sistema comercial basado en el intercambio y la búsqueda de nuevas rutas.

  7. INFLUENCIA DE LA INGENIERÍA EN EL DESARROLLO COMERCIAL DE LA HUMANIDAD: EDAD ANTIGUA

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    ANA MARÍA SARAVIA

    2009-12-01

    Full Text Available Básicamente, el comercio es el intercambio de mercancías, de servicios o de ambos. En la antigüedad, la cara real del comercio era el trueque, que consistía en el intercambio directo de bienes y servicios. Hoy, los comerciantes negocian generalmente con dinero como medio de intercambio, por lo que su invención hizo más simple comerciar. El comercio puede darse por la especialización y división del trabajo o porque una región tiene una ventaja comparativa en la producción de algún bien comercializable. Pero de la misma manera, para poder desarrollar el comercio, se necesitó de la ayuda y el desarrollo de áreas específicas que la ingeniería brindó.En este trabajo de hace una descripción de la influencia de la ingeniería en el desarrollo del comercio mundial desde la antigüedad hasta la caída del Imperio romano.

  8. Influencia familiar sobre las actitudes ante el consumo de drogas en adolescentes españoles

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    María de la Villa Moral Jiménez

    2013-08-01

    Full Text Available En la cultura mediterránea la familia sigue siendo la agencia socializadora por excelencia, a pesar de diversos cambios referenciales y en la intensidad de los afectos, así como en los estilos disciplinares característicos de nuevas tipologías de familias postmodernas. La influencia y modelado familiar sobre las actitudes ante el consumo de sustancias psicoactivas en adolescentes está bien establecida en indicadores tales como experiencias paternas con las drogas, apego y supervisión parental, clima afectivo, dinámica sociofamiliar, etc. Nuestro objeto de estudio se centra en el análisis psicosocial de tales indicadores, así como en ofrecer un análisis diferencial de la valoración de la relación paterno-filial en relación con las actitudes ante el consumo de drogas en un colectivo de adolescentes españoles. Se ha confirmado una mayor permisividad actitudinal y menor concienciación ante los efectos dañinos de las drogas en los hijos de padres consumidores de sustancias psicoactivas tanto legales como ilegales. Se confirma la importancia psicosocial del Apoyo más valorado por los adolescentes que no consumen drogas, así como la percepción diferencial del empleo del Castigo-Coerción y de la Reprobación en adolescentes consumidores que presentan niveles de mayor permisividad actitudinal.

  9. Adubação orgânica, mineral e organomineral e sua influencia no crescimento da helicônia em Garanhuns-PE Organic, mineral and organomineral fertilization and its influence on the growth of heliconia in Garanhuns, Brazil

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    Josabete SB Carvalho

    2012-12-01

    Full Text Available As helicônias se destacam pela beleza e variedade de formas e cores e estão entre as flores tropicais mais comercializadas no mundo. Foi avaliado o crescimento e o desenvolvimento de Heliconia psittacorum x H. spathocircinata, cv. Golden Torch, quanto à adubação orgânica e mineral. O experimento foi conduzido em campo, em delineamento inteiramente casualizado. Os tratamentos foram constituídos por quatro dosagens de adubo (testemunha (T1 solo local; esterco de boi (T2; adubo mineral NPK (T3 e esterco de boi + NPK (T4, em dez repetições. Foram avaliados a altura da planta, número de brotações, época do florescimento, número, tamanho e peso das inflorescências. A combinação da adubação mineral (NPK e orgânica (esterco (organomineral afetou significativamente a altura das plantas, apresentando um aumento de mais de 23% quando comparada com o controle aos 330 dias após o plantio. Aos seis meses de cultivo, todas as plantas exibiam um crescimento bastante homogêneo e vigoroso, sem sintomas visuais de deficiência nutricional, evidenciando que a adubação química associada ao esterco bovino (organomineral é a mais recomendada para o cultivo de helicônia cv. Golden Torch. Essa cultivar pode ser bem adaptada às condições de Garanhuns.Heliconia stands out for its beauty and variety of shapes and colors and this plant is among the most traded tropical flowers in the world. We evaluated the growth and development of Heliconia psittacorum x H. spathocircinata cv. Golden Torch, submitted to organic and mineral fertilization. The experiment was carried out in field, in a completely randomized design. The treatments consisted of four doses of fertilizer (control (T1 local soil; cattle manure (T2; mineral fertilizer NPK (T3 and cattle manure + NPK (T4, in ten replications. We evaluated plant height, number of shoots, flowering time, number, size and weight of inflorescences. The combination of mineral fertilizer (NPK and organic

  10. Influencia del disolvente en las reacciones orgánicas

    OpenAIRE

    Alcalde Aragonés, Ana

    2012-01-01

    La mayoría de los procesos químicos industriales, particularmente de la Química fina, se realizan en disolución. El disolvente puede tener una influencia decisiva en la eficacia de la reacción y es, por tanto, un parámetro estratégico en la planificación de una síntesis. Los disolventes orgánicos, particularmente halogenados y/o aromáticos, plantean problemas en cuanto a su toxicidad, inflamabilidad e impacto medioambiental y por ello su reemplazo por medios alternativos con un menor impacto ...

  11. Aptidão física relacionada à saúde de idosos: influência da hidroginástica Aptitud física relacionada con la salud de los añosos: influencia de la hidrogimnasia Physical fitness and elderly health effects of hydrogymnastics

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    Roseane Victor Alves

    2004-02-01

    Full Text Available FUNDAMENTOS E OBJETIVOS: A prática de exercício físico, além de combater o sedentarismo, contribui de maneira significativa para a manutenção da aptidão física do idoso. O objetivo do estudo foi verificar o efeito da prática de hidroginástica sobre a aptidão física do idoso associada à saúde. METODOLOGIA: Foi realizado um ensaio controlado em 74 mulheres idosas, sem atividade física regular. Um grupo de 37 mulheres recebeu duas aulas semanais de hidroginástica durante três meses e outras 37 mulheres serviram como controle. A aptidão física foi avaliada através da bateria de testes de Rikli e Jones (1999, com avaliações de força e resistência de membros inferiores (levantar e sentar na cadeira, força e resistência de membros superiores (flexão do antebraço, flexão de membros inferiores (sentado, alcançar os membros inferiores com as mãos, mobilidade física - velocidade, agilidade e equilíbrio (levanta, caminha 2,44m e volta a sentar, flexibilidade dos membros superiores (alcançar atrás das costas com as mãos e resistência aeróbica (andar seis minutos. A bateria de testes foi aplicada antes do início das aulas e no fim do programa após três meses. Os grupos foram semelhantes em relação a idade, IMC, renda familiar e anos de escolaridade. RESULTADOS: Ao longo dos três meses, foram acompanhadas 30 mulheres em cada grupo; perda amostral de 18,9%. Observou-se no grupo da hidroginástica um melhor desempenho em todos os pós-testes, quando comparados com os resultados do próprio grupo no pré-teste e com o controle no pós-teste (p FUNDAMENTOS Y OBJETIVOS: La práctica del ejercicio físico, además de combatir el sedentarismo, contribuye de manera significativa para el mantenimiento de la aptitud física. El objetivo de este estudio fue el verificar el efecto de la práctica de la hidrogimnasia sobre la aptitud física del añoso asociada a la salud. METODOLOGÍA: Fue realizado un ensayo controlado en 74

  12. Technical economic evaluation for electricity generation from biomass generation; Avaliacao tecnico-economica da conversao da biomassa em eletricidade utilizando tecnologia da gaseificacao

    Energy Technology Data Exchange (ETDEWEB)

    Sales, Cristina Aparecida Vilas Boas de; Andrade, Rubenildo Vieira; Lora, Electo Eduardo Silva [Universidade Federal de Itajuba (UNIFEI), MG (Brazil)], e-mail: Cristinasales@unifei.edu.br, e-mail: ruben@unifei.edu.br, e-mail: esl43@yahoo.com

    2006-07-01

    This paper presents a techno-economical evaluation of the biomass gasification utilization with different technologies such as: reciprocating engine, gas microturbine, Stirling engine and fuel cells. The power range for electricity generation is considered between 50 kW and 3 MW. The paper shows the sensibility analysis about fuel price, investment, electric energy tax and O and M costs, and the calculation are realized in excel. The results are presented in graphs having indicated the behavior of the economic indicators in function of the variation of the costs of each parameter reducing and increasing in up to 50% of the calculated value. (author)

  13. Wood density variation in Gmelina arborea trees using X-ray densitometry; Avaliacao da densidade da madeira de Gmelina arborea pela aplicacao da densitometria de raios-X

    Energy Technology Data Exchange (ETDEWEB)

    Roque, Roger Moya [Instituto Tecnologico da Costa Rica, Cartago (Costa Rica). Centro de Investigacao em Integracao Bosque-Industria. Dept. de Engenharia Florestal]. E-mail: rmoya@itcr.ac.cr; Tomazello, Mario [Sao Paulo Univ., Piracicaba, SP (Brazil). Escola Superior de Agricultura Luiz de Queiroz. Dept. de Ciencias Florestais]. E-mail: mtomazel@esalq.usp.br

    2005-07-01

    The wood density constitutes the main wood quality parameter by its relationship with anatomical, physical and chemical properties and wood utilization. The modern and accurate methods - like X-ray densitometry - are applied to determine the density spatial distribution in wood sections and pith-bark direction. On the other hand, emphasis to wood utilization from fast growing plantations, like Gmelina arborea in Costa Rica, has been done. The objectives of this study were to determinate the influence of 2 climatic conditions of Costa Rica on radial wood density variation of gmelina trees form fast growing plantations using the X-ray densitometry method. Wood samples were cut at DBH of gmelina trees and transversal thin laths were selected at north-south direction and conditioned at 12% moisture content equilibrium and X-rayed. The radiographic films were revealed and scanned a 256 gray scale with 1000 dpi resolution and the intra tree-ring density were determined by CRAD and CERD software. The results demonstrated that the climatic and forest management affects the wood density variability and the distinctness of tree-ring boundaries of gmelina trees, as well as, the applicability of X-ray densitometry in wood quality analysis. (author)

  14. The use of medicinal plants as a therapeutical resource: from the influences of the professional formation to the ethical and legal implications of its applicability as an extension of nursing care practice El uso de plantas medicinales como recurso terapéutico: de las influencias de la formación profesional a las implicaciones éticas y legales de su aplicabilidad como extensión de la práctica de cuidar de la enfermera O uso de plantas medicinais como recurso terapêutico: das influências da formação profissional às implicações éticas e legais de sua aplicabilidade como extensão da prática de cuidar realizada pela enfermeira

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    Neide Aparecida Titonelli Alvim

    2006-06-01

    Full Text Available This qualitative research aimed to analyze the biomedical influence in the context of nurses' formation and professional activities; to reflect about ethical and legal implications of using medicinal plants in nursing care; to argue about the need to configure and delimit this resource as a legitimate instrument for expanding nursing care practice. We used the creative-sensible method and developed dynamics with a group of nurses to produce data, analyzed in the categories "the biomedical influence in the academic-professional orientation of nursing" and "ethical and legal implications in the applicability of medicinal plants in care". Results indicated the need to advance in studies on the nursing diagnosis that implies the prescription of medicinal plants, so that the client is well taken care of by nurses, thus legitimizing it as an extension of their professional practice. Not as an exclusive territory, but as shared and interdisciplinary health care action.Esta investigación cualitativa buscó analizar la influencia biomédica en el contexto de formación y actuación profesional de los enfermeros; reflejar sobre las implicaciones éticas y legales del uso de plantas medicinales en la enfermería; discutir la necesidad de configuración y delimitación de este recurso como instrumento legítimo de extensión de la práctica de enfermería. Fue utilizado el método creativo-sensible y el desarrollo de dinámicas junto con un grupo de enfermeras para producir los datos de la investigación, analizados en las categorías "la influencia biomédica en la orientación académico-profesional de enfermería" y "las implicaciones éticas y legales en la aplicabilidad de plantas medicinales en el cuidado". Los resultados señalaran la necesidad de avanzar en los estudios sobre la diagnosis de enfermería que implica en prescribir plantas medicinales para que el cliente sea bien cuidado por la enfermera y, así, se pueda legitimarla como extensi

  15. Antecipação da colheita na qualidade fisiológica de sementes de soja

    OpenAIRE

    Terasawa, José Maurício

    2012-01-01

    Resumo: O retardamento da colheita a partir da maturidade fisiológica influencia negativamente a qualidade da semente, devido a sua exposição a condições menos favoráveis do ambiente. Normalmente, o produtor aguarda a perda de umidade pelas sementes e inicia a colheita tão logo seja possível efetuá-la. A pesquisa teve por objetivo avaliar a influência da colheità antecipada da soja, com diferentes teores de água, sobre a qualidade fisiológica das sementes produzidas, procurando-se determinar ...

  16. A influência da qualidade na atratividade de instituições de ensino superior com capital aberto La influencia de la calidad en la atracción de instituciones de educación superior con el capital abierto The influence of the quality in the attractiveness of higher education institutions with open market

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    Maria Cristina N. Gramani

    2008-09-01

    Full Text Available Quando a rentabilidade está aliada à qualidade de uma Instituição de Ensino Superior (IES com capital aberto, sua atratividade por parte de futuros investidores é maior. Em geral, a rentabilidade das IES´s é divulgada por meio de prospectos, resultados trimestrais e relação com investidores (RI, entretanto esforços bem menores são alocados às demonstrações de indicadores de qualidade. Desta forma, este artigo propõe identificar fatores que refletem a qualidade de IES´s, apontando doze indicadores, dentre os quais, alguns que levam a benefícios à qualidade e outros que podem acusar riscos de diminuição da qualidade. Também foi construído um mapa de posicionamento com estes doze indicadores alocando-os nas variáveis rentabilidade e qualidade, de forma a identificar o nível de atratividade de uma IES.Cuando la rentabilidad se alía a la calidad de una Institución de Educación Superior (IES, su atracción de parte de inversor es más grande. La rentabilidad de las IES´s se comunica generalmente a través de prospectos, de informes trimestrales y relaciones con los inversores, no obstante son pocos los esfuerzos para presentar los indicadores de la calidad. De tal manera, este artículo considera los factores que reflejan la calidad de IES´s, señalando doce indicadores, entre las cuales, algo que llevan las ventajas la calidad y otros que pueden acusar riesgos con la reducción de la calidad. También fue construido un mapa de la colocación con estos doce indicadores con sus variables renta y calidad, de la forma que identifique el nivel de la atracción de un IES.When the yield is connected to the quality of a Higher Education Institution (HEI, its attractiveness for future investors is larger. In general, the yield data of the HEI's is available in prospects, quarterly results and relations with investors (RI. However, less effort is placed to demonstrations of quality indicators. So, this article intends to identify

  17. A influência da suplementação de triglicerídeos de cadeia média no desempenho em exercícios de ultra-resistência Influencia de la suplementacion de trigliceridos de cadena media en ejercicios de máxima resistencia The influence of medium-chain triglycerides supplementation in ultra-endurance exercise performance

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    Antonio Marcio Domingues Ferreira

    2003-11-01

    Full Text Available As competições de ultra-resistência representam um grande desafio no mundo esportivo. O gasto energético de uma prova de ultra-resistência pode variar de 5.000 a 18.000kcal por dia. Por causa dessa grande demanda, várias estratégias para melhora do desempenho têm sido desenvolvidas nos últimos anos, como a suplementação de triglicerídeos de cadeia média (TCM em combinação com carboidratos (CBO. A suplementação de TCM visa aumentar a utilização dos ácidos graxos livres (AGL como fonte de energia, poupando os estoques corporais de glicogênio para o final da competição. Quando comparados com os triglicerídeos de cadeia longa (TCL, os TCM são rapidamente absorvidos e transportados pelo organismo. Além disso, os TCM possuem velocidade de oxidação comparável à dos CBO, mas, por serem lipídios, fornecem uma quantidade de energia maior quando são oxidados. Dessa forma, os TCM parecem ser o combustível ideal para provas de longa duração. Portanto, esta revisão possui como objetivo esclarecer como os TCM podem influenciar o desempenho em provas de ultra-resistência.Las competencias de alta resistencia consituyen un gran desafío en el mundo del deporte. El gasto energético de una prueba da máxima resistencia puede variar entre 5.000 y 18.000 kcalorías por día. Por causa de esa gran demanda, se deben desarrollar varias estrategias para la mejora en el desempeño deportivo en los útimos años como lo es la suplementación con triglicéridos de cadena media (TCM en combinación con carbohidratos (CBO. La suplementación de los TCM aumenta la utilización de los ácidos grasos libres (AGL como fuente de energía, dejando depósitos corporales de glicógeno para el final de la competencia. Cuando son comparados con los trigliceridos de cadena larga (TCL, los TCM son rápidamente absorbidos y transportados por el organismo. Además de eso, los TCM poseen una velocidad de oxidación comparable con los CBO, que por ser l

  18. A influência da ansiedade na atividade profissional do circulante de sala de operações La influencia de la ansiedad en la actividad profesional del circular de cuarto de cirurgía The influence of the anxiety in the professional activity of the circulating of room of operations

    Directory of Open Access Journals (Sweden)

    Aparecida de Cássia Geane Peniche

    2005-09-01

    Full Text Available INTRODUÇÃO: O ambiente de trabalho pode desencadear no circulante de sala de operações, alterações emocionais como a ansiedade, influenciando no desempenho de suas tarefas. OBJETIVOS: Identificar traço e estado de ansiedade do auxiliar e do técnico de enfermagem; identificar quais as alterações fisiológicas provocadas pela ansiedade, e relacionar o traço e estado de ansiedade com as possíveis alterações desencadeadas pela mesma. MÉTODO: Os dados foram coletados usando os inventários para traço e estado de ansiedade antes do início da cirurgia com 19 circulantes de sala de operações e a observação deles durante a cirurgia. RESULTADOS: Os resultados obtidos identificaram uma amostra com 13 (68,42% circulantes apresentando baixo traço de ansiedade e 6 médio traço de ansiedade (31,58%. Com relação ao estado de ansiedade, 14 (73,68% apresentaram baixo estado de ansiedade, 4 (21,05% médio estado e 1 (5,26% alto estado de ansiedade; destes 19 funcionários, 8 (42,11% apresentaram manifestações clínicas relacionadas à ansiedade como agitação, agitação e irritabilidade, agitação e movimentos repetitivos e tristeza. CONCLUSÕES: Pode-se concluir, que a maioria possue baixo traço (68,42% e estado de ansiedade (73,68%. Não houve associação estatisticamente significante entre a ansiedade e as manifestações clínicas apresentadas pelos auxiliares e técnicos de enfermagem, assim como não houve correlação entre ansiedade e as manifestações clínicas apresentadas.INTRODUCCIÓN: El ambiente de trabajo puede desencadenar en el circulante del quirófano, alteraciones emocionales como la ansiedad, influenciando el desempeño de suas tareas. OBJETIVO: El estudio tenía como los objetivos: identificar la línea y estado de la ansiedad del ayudante y del técnico lactante; identificar las alteraciones del physiologico provocadas por la ansiedad, la actuación en el sistema nervioso autónomo y relacionar la línea y

  19. Influência da freqüência de alongamento utilizando facilitação neuromuscular proprioceptiva na flexibilidade dos músculos isquiotibiais Influencia de la frecuencia de alongamiento utilizando facilitación neuromuscular propioceptiva en la flexibilidad de los músculos isquio tibiales Influence of the stretching frequency using proprioceptive neuromuscular facilitation in the flexibility of the hamstring muscles

    Directory of Open Access Journals (Sweden)

    Zenewton André da Silva Gama

    2007-02-01

    Full Text Available A utilização de manobras de alongamento é um dos recursos mais utilizados na prática de reabilitação. Porém, alguns parâmetros, como a freqüência, não têm sido estudados quando se utilizam as técnicas de facilitação neuromuscular proprioceptiva (FNP. O objetivo deste estudo foi analisar a freqüência ótima visando aumentar a flexibilidade dos músculos isquiotibiais, medida pela amplitude ativa de extensão do joelho. Selecionaram-se 36 sujeitos do sexo feminino (média de idade (DP de 21,7 (1,9 anos, com limitação da flexibilidade dos músculos isquiotibiais. Os sujeitos foram distribuídos aleatoriamente em quatro grupos (n = 9. Os três grupos de alongamento receberam a intervenção cinco dias por semana durante duas semanas consecutivas. O quarto grupo, que serviu como controle, não foi alongado. Os grupos de alongamento com FNP variaram quanto à freqüência em uma, três e seis manobras por sessão. Uma análise de variância (ANOVA foi utilizada para as medidas iniciais e finais (p El uso de maniobras de alongamiento es uno de los recursos más utilizados en la práctica de rehabilitación. Sin embargo, algunos parámetros, como frecuencia, no se estudian cuando se utilizan las técnicas de facilitación neuromuscular propioceptiva (FNP. El objetivo de este estudio ha sido analizar la frecuencia óptima buscando aumentar la flexibilidad de los músculos isquio tibiales, medida por la amplitud activa de extensión de la rodilla. Se seleccionaron 36 individuos del sexo femenino (con edad media (DP de 21,7 (1,9 años, con limitación de flexibilidad de los músculos isquio tibiales. Los individuos fueron distribuidos aleatoriamente en cuatro grupos (n = 9. Los tres grupos de alongamiento recibieron intervención cinco días por semana durante dos semanas consecutivas. El cuarto grupo que sirvió como control, no fue alongado. Los grupos de alongamiento con FNP variaron en relación a la frecuencia en una, tres y seis

  20. O sucesso do turismo no espaço rural da Serra da Estrela: realidades e utopias

    OpenAIRE

    Teodoro, Ana Filipa Gouveia

    2015-01-01

    Resumo Verificar o que influencia o sucesso do Turismo em Espaço Rural (TER) na região da Serra da Estrela é o que se procura neste relatório de estágio profissionalizante para a obtenção do grau de mestre em Ecoturismo, com o desenvolvimento de um método de investigação baseado em três perspetivas de sucesso: (A) assente nas características operacionais das unidades de alojamento, (B) do ponto de vista do gestor sobre a possibilidade de retorno do investimento inicial e (C) tendo por base n...

  1. Bloqueio extraconal para facectomia com implante de lente intra-ocular: influência da via de acesso (superior ou inferior na qualidade da anestesia Bloqueo extraconal para facectomia con implantación de lente intra-ocular: influencia de la vía de acceso (superior o inferior en la calidad de la anestesia Extraconal block for cataract extraction surgery with implantation of intraocular lens: influence of access way (upper or lower in anesthetic outcome

    Directory of Open Access Journals (Sweden)

    Daniel Espada Lahoz

    2003-08-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Nas intervenções cirúrgicas para oftalmologia não se encontrou técnica de anestesia totalmente segura, a introdução da anestesia extraconal fez aumentar as indicações de cirurgias oculares com bloqueio, já que a incidência de complicações graves é menor, fato já descrito por Hay, em 1991. Os bloqueios extraconais podem ser realizados por várias vias de acesso, entre elas a superior e a inferior. O objetivo deste estudo foi avaliar qual via de acesso (superior ou inferior promove bloqueio anestésico de melhor qualidade. MÉTODO: Foram incluídos neste estudo 164 pacientes, de ambos os sexos, com idades entre 23 e 92 anos, estado físico ASA I a IV, índice cardíaco 1 e 2 de Goldman, com indicação de facectomia com implante de lente intra-ocular. Os pacientes foram distribuídos aleatoriamente em dois grupos de 82, de acordo com a via de acesso primária do bloqueio extraconal: grupo ES (extraconal superior e EI (extraconal inferior. A qualidade do bloqueio foi avaliada pelo aparecimento da dor no per-operatório, manutenção de movimentação das pálpebras ou do globo ocular, persistência do reflexo de Bell, número de bloqueios realizados para a obtenção de condições cirúrgicas e avaliação do bloqueio pelo cirurgião. RESULTADOS: A via de acesso superior apresentou maior incidência de acinesia de pálpebras (via superior - 56,1%; via inferior - 36,6% do músculo reto superior (via superior - 93,9%; via inferior - 65,9%, assim como menor necessidade de bloqueios complementares (via superior - 29,3%; via inferior - 42,7%. A via de acesso inferior apresentou maior acinesia do músculo reto inferior (via superior - 72%; via inferior - 84,1% sem diferença estatística. CONCLUSÕES: Nas condições deste estudo a via extraconal superior demonstrou ser superior em relação à via extraconal inferior, como via de acesso primária para bloqueio locorregional para cirurgia de facectomia com

  2. Influencia del CO2 sobre un cemento portland anhidro

    Directory of Open Access Journals (Sweden)

    Gaspar-Tebar, Demetrio

    1976-03-01

    Full Text Available Not availableEn el lETcc se han desarrollado diversos trabajos para determinar la influencia que el aire húmedo ejerce sobre las propiedades de distintos conglomerantes hidráulicos industriales con el fin de fijar un límite al tiempo durante el cual un conglomerante puede conservarse sin que pierda su valor hidráulico; estos trabajos han dedicado la mayor atención a la evolución de las resistencias mecánicas, así como a la finura, trabajos que se completaron, posteriormente, con la aplicación de la espectrometría IR (1, (2.

  3. Evaluation of the absorbed dose in odontological computerized tomography; Avaliacao da dose absorvida em tomografia computadorizada odontologica

    Energy Technology Data Exchange (ETDEWEB)

    Legnani, Adriano; Schelin, Hugo R.; Rocha, Anna Silvia P.S. da, E-mail: schelin@utfpr.edu.b, E-mail: anna@utfpr.edu.b [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil); Khoury, Helen J., E-mail: khoury@ufpe.b [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil)

    2011-10-26

    This paper evaluated the absorbed dose at the surface entry known as 'cone beam computed tomography' (CBCT) in odontological computerized tomography. Examination were simulated with CBCT for measurements of dose. A phantom were filled with water, becoming scatter object of radiation. Thermoluminescent dosemeters were positioned on points correspondent to eyes and salivary glands

  4. Evaluation of the asphaltenes macromolecules stabilization by alkylbenzenes compounds; Avaliacao da estabilizacao de macromoleculas asfaltenicas por compostos alquilbenzenicos

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, G.E.; Mansur, C.R.E.; Lucas, E.F. [Universidade Federal, Rio de Janeiro, RJ (Brazil). Inst. de Macromoleculas]. E-mail: elucas@ima.ufrj.br; geiza@ima.ufrj.br; Gonzalez, G. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas]. E-mail: gaspar@cenpes.petrobras.com.br

    2003-07-01

    The asphaltene deposition is a problem that affects oil production, transportation and storage. Some researches about asphaltene stabilization have been made in order to avoid its flocculation and deposition. In this work, the performance of four alkylbenzene compounds as asphaltene stabilizer was evaluated. The additive were tested in two different concentrations: 5000 and 10000 mg/L. Cardanol, polycardanol, polystyrene and polystyrene sulfonade were used as additive. The study was carried out by asphaltene precipitation in a solvent mixture (toluene and heptane), since that the asphaltene solubility in these solvents are different. The best results were obtained by using cardanol, at 5000 mg/L. (author)

  5. Evaluation of external exposure in a radioactive waste deposit; Avaliacao da exposicao externa em um deposito de rejeitos radioativos

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Sergio Quinet de; Pereira, Wagner de Souza; Py Junior, Delcy de Azevedo; Dores, Luis Augusto de Carvalho Bresser; Dantas, Marcelino Vicente de Almeida; Silva, Ana Claudia Antunes; Garcia Filho, Oswaldo, E-mail: wspereira@inb.gov.b, E-mail: sergioquinet@inb.gov.b, E-mail: delcy@inb.gov.b, E-mail: luisdores@inb.gov.b, E-mail: marcelino@inb.go.b, E-mail: anasilva@inb.gov.b, E-mail: ogarcia@inb.gov.b [Industrias Nucleares do Brasil (UTM/INB), Pocos de Caldas, MG (Brazil). Unidade de Tratamento de Minerio

    2011-10-26

    The ore treatment unit (OTU) of Industrias Nucleares do Brasil (INB), located at Caldas municipality - Minas Gerais, Brazil, posses a radioactive deposit, coming mainly from the chemical processing of monazite sands for obtention of 'rare earths'. The main components of these waste are the 'torta II (thorium rich residues) and the 'mesothorium' ({sup 228}Ra rich residues) - conditioned in steel drums (200 liters), plastic pumps (100 liters) or underground silos. These loaders are deposited in waste loading warehouses existent at the OTU and periodic evaluations of the external exposure rates (mR/h) are part of the 'Programa de Monitoracao Radiologica Ocupacional' of the unit. This paper presents a brief history of origins of this waste deposit and the material found there, and also the result of a routine monitoring of the external exposure rates

  6. Evaluation of radioiodinetherapy protocol for patients with Plummer disease; Avaliacao do protocolo da radioiodoterapia para pacientes com doenca de Plummer

    Energy Technology Data Exchange (ETDEWEB)

    Mendonca, Keyla Mary Cavalheiro; Antonio Filho, Joao; Brandao, Simone Cristina Soares, E-mail: keylamcm@yahoo.com.br, E-mail: jaf@ufpe.br, E-mail: simonecordis@yahoo.com.br [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil); Santos, Marcus Aurelio P. dos, E-mail: masantos@cnen.gov.br [Centro Regional de Ciencias Nucleares do Nordeste (CRCN-NE/CNEN-PE), Recife, PE (Brazil)

    2014-07-01

    The disease Plummer (DP) is generated by the thyroid cells that function autonomously, independent the rest of the organ parenchyma. The DP presents a prevalence of 1% to 9%, higher in regions with iodine deficiency, affecting six women for every man. The study was conducted at the Department of Nuclear Medicine of Universidade Federal de Pernambuco (UFPE) from {sup 99m}Tc data capture and mass existing in the thyroid records of 54 patients with PD who underwent radioiodine therapy with fixed activities 1110 megabecquerels (MBq) from 2004 to 2008. For capitation of {sup 99m}Tc from a group of 22 patients were used 5 ml syringes, measured by a Capintec CRC-7 model activimeter, having scintigraphy after 20 minutes and results in a region of interest. Mass evaluation was based on method of palpation of the thyroid, considering the mass standard. It is observed that 68.2% of patients received more activity than needed, 31.8% were less active, and none received activity in accordance with your needs. There was a statistically significant difference (p <0.05) between the fixed activities and activities computed for all patients, according to Chi-square test for independence with 21 degrees of freedom. The cure rate of a group of 32 patients was 75% after one year of follow-up. It is suggested that the RIT is preceded by an assessment of the maximum percentage of uptake and thyroid mass.

  7. Competencies evaluation of the petroleum industry local suppliers; Avaliacao de competencias dos fornecedores locais da industria do petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Marzani, Bianca Santos; Furtado, Andre Tosi [Universidade Estadual de Campinas, SP (Brazil). Inst. de Geociencias. Dept. de Politica Cientifica e Tecnologica]. E-mail: bianca@ige.unicamp.br; furtado@ige.unicamp.br

    2003-07-01

    This article presents a research proposition that focuses on competencies evaluation of the local suppliers of goods and services in the petroleum industry. Because of the new context created by the opening of the petroleum market the suppliers to face a new competition environment, exposed to the foreign suppliers that operate in a higher production scale and have great financial and technological capacities. This justifies the development of the current study because the final diagnosis will help the studied companies in their decision process by the divulgation of their weaknesses and potentialities, which will motivate an improvement in the sector. In this paper, we include technological, organizational and relational competencies. Moreover, some of the main contributions of the literature about these topics are presented, including Lall, Kim, Figueiredo, Furtado, Munier, etc. (author)

  8. Secondary network distribution evaluation system using genetic algorithms; Sistema de avaliacao da rede secundaria de distribuicao utilizando algoritmos geneticos

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Alexandre Augusto Angelo de [Companhia Paranaense de Energia (COPEL), Curitiba, PR (Brazil)]. E-mail: alexandre.souza@copel.com; Neves Junior, Flavio; Lopes, Heitor Silverio [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil)]. E-mail: neves@cpgei.cefetpr.br; hslopes@cpgei.cefetpr.br

    2006-10-15

    Abstract: This work aims at evaluating the performance of an evolutionary approach of Pareto's Optimization for a multi objective optimization problem. The purpose of the method is to generate a solution not dominated to determine an appropriate configuration for a circuit of the secondary network. The method considers values of supply voltage evaluated through the simulation of a power flow, as well as cost criteria for the proposed solution. For the determination of the best configuration of the circuit, replacement of cables and changes of the phases of consumers are evaluated, aiming at an improvement of voltage level of the circuit in analysis. (author)

  9. Evaluation of the ocular protection for low intensity therapeutic lasers; Avaliacao da protecao ocular para lasers terapeuticos em baixa intensidade

    Energy Technology Data Exchange (ETDEWEB)

    Cordon, Rosely

    2003-07-01

    The low intensity laser therapy (LILT) has been extensively used in medicine and dentistry presenting positive effects. However, the laser radiation can also cause adverse effects. Due to the ocular focalization property, in the wavelength from 400 to 1400 nm, the retina is more susceptible to damage by radiation than any other part of the human body. Then, the ocular protection is frequently emphasized. This protection must attenuate the radiation to a safe level. The International Electrotechnical Commission (IEC) standard IEC 60825-1 suggests safety requirements for medical laser equipment, including the ocular protection, based on maximum permissible exposure levels. The Brazilian legislation adopts a corresponding IEC standard, the NBR IEC 601.2.22, for safety requirements. The aim of this study was to analyze the adequacy of the ocular protectors furnished by four laser equipment manufacturers, commercially available in Brazil, commonly used for LILT. For this purpose, the laser equipment and the respective ocular protectors were characterized. The adequacy was verified according to the IEC standards. It was found, among other results, ocular protectors attenuating to safe levels the radiation emitted by the respective laser equipment, however, presenting inadequate visual transmission. Inefficient protection and protection indicated in cases where they were not necessary were also observed. (author)

  10. Evaluation of the dispersion of oil refinery liquid effluent; Avaliacao da dispersao de efluente liquido de refinaria de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Mariano, Adriano Pinto; Silva, Ariovaldo Jose da; Oliveira, Valdenilson Jose Alves de; Angelis, Dejanira de Franceschi de [Universidade Estadual Paulista (UNESP), Rio Claro, SP (Brazil). Dept. de Bioquimica e Microbiologia. Inst. de Biociencias], e-mail: adrianomariano@yahoo.com.br

    2010-07-15

    In this paper, two techniques to evaluate the dispersion of the effluent of an oil refinery are presented. Thus, the dispersion plume was characterized by field measurements of electrical conductivity and by computational simulation (Cormix simulator). An oil refinery whose effluent is discharged on the Atibaia river (Paulinia/SP) is taken as study case. The behavior of the effluent was evaluated until 1000 m after the discharge. The results show that the measurement of electrical conductivity is a suitable technique to evaluate the dispersion of oil refinery wastewaters, since they have high conductivity and for this reason there is a strong contrast between the values of the wastewater and the ambient background. Furthermore, other water quality parameters had a dispersion behavior similar to that shown by the conductivity. The dispersion plume generated by the computational simulator showed high concordance with the field data. In this manner, computational simulation can be a useful tool to evaluate the dispersion of discharges considering hypothetical scenarios, as well as to design the discharge channel. (author)

  11. 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)

  12. 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)

  13. Evaluation of {sup 7}Be fallout spatial variability; Avaliacao da variabilidade espacial do fallout do {sup 7}Be

    Energy Technology Data Exchange (ETDEWEB)

    Pinto, Victor Meriguetti

    2011-07-01

    The cosmogenic radionuclide beryllium-7 (Be) is produced in the atmosphere by cosmic particle reactions and is being used as a tracer for soil erosion and climatic processes research. After the production, {sup 7}Be bonds to aerosol particles in the atmosphere and is deposited on the soil surface with other radionuclide species by rainfall. Because of the high adsorption on soil particles and its short half-life of 53.2 days, this radionuclide follows of the erosion process and can be used as a tracer to evaluate the sediment transport that occurs during a single rain event or short period of rain events. A key assumption for the erosion evaluation through this radiotracer is the uniformity of the spatial distribution of the {sup 7}Be fallout. The {sup 7}Be method was elaborated recently and due to its few applications, some assumptions related to the method were not yet properly investigated yet, and the hypothesis of {sup 7}Be fallout uniformity needs to be evaluated. The aim of this study was to evaluate the {sup 7}Be fallout spatial distribution through the rain water {sup 7}Be activity analysis of the first five millimeters of single rain events. The rain water was sampled using twelve collectors distributed on an experimental area of about 300 m2 , located in the campus of Sao Paulo University, Piracicaba. The {sup 7}Be activities were measured using a 53% efficiency gamma-ray spectrometer from the Radioisotope laboratory of CENA. The {sup 7}Be activities in rain water varied from 0.26 to 1.81 Sq.L{sup -}1, with the highest values in summer and lowest in spring. In each one of the 5 single events, the spatial variability of {sup 7}Se activity in rain water was high, showing the high randomness of the fallout spatial distribution. A simulation using the {sup 7}Be spatial variability values obtained here and {sup 7}Se average reference inventories taken from the literature was performed determining the lowest detectable erosion rate estimated by {sup 7}Be model. The importance of taking a representative number of samples to determine the average reference {sup 7}Se inventory was verified, which is essential to improve the precision of the soil redistribution rate estimates. (author)

  14. Evaluation of the image quality in computed tomography: different phantoms; Avaliacao da qualidade de imagem na tomografia computadorizada: diferentes fantomas

    Energy Technology Data Exchange (ETDEWEB)

    Silveira, Vinicius C.; Delduck, Romulo S.; Kodlulovich, Simone [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Oliveira, Larissa C. [Universidade Federal do Rio de Janeiro (COPPE/UFRJ), Rio de Janeiro, RJ (Brazil). Instituto Alberto Luiz Coimbra de Pos-Graduacao e Pesquisa de Engenharia. Nuclear Instrumentation Laboratory; Mecca, Fernando A. [National Institute of Cancer (INCa), Rio de Janeiro RJ (Brazil); Silva, Humberto O. [Copa D' Or Hospital, Rio de Janeiro, RJ (Brazil). Rede Labs D' Or

    2011-07-01

    The aim of this paper was to compare the simulators provided by the CT manufactures and Catphan's Phantom with the American College of Radiology (ACR) computed tomography phantom. The image evaluation followed the protocols established by the manufactures of the phantoms. For slice thickness evaluation, the maximum percentage difference was 9% between the phantoms ACR and Siemens. In CT number accuracy test, the measurements of CT number of water showed a difference of 10 HU between the CT simulators. Comparing the uniformity results, the discrepancy was 11% and 55% for Siemens and Philips respectively in relation to the result obtained with the ACR phantom. The result of low contrast was the same for all phantoms. The MTF50 and MTF10 obtained with Siemens phantom was 4 and 8 pl/mm. For Catphan, 6 and 7 pl/mm. Results demonstrate that the ACR simulator was the most comprehensive and flexible to be used in several scanner models. Some simulators did not present all image quality indicators to perform a complete test. (author)

  15. Evaluation of biostimulation in clay soil contaminated by petroleum; Avaliacao da bioestimulacao em solos argilosos contaminados com petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Baptista, Sandro J.; Cammarota, Magali C.; Freire, Denize D.C. [Universidade Federal do Rio de Janeiro, RJ (Brazil). Dept. de Engenharia Bioquimica. Lab. de Tecnologia Ambiental]. E-mail: baptista@eq.ufrj.br; denize@eq.ufrj.br

    2003-07-01

    Biostimulation has been used as a technic in order to increase the microbial activity adding inorganic nutrients and/or terminal electron acceptor in the contaminated place. The main goal of this work was evaluate how each inorganic nutrient could help the biodegradation at a given petroleum contaminated clay soil. At first, the work was designed to investigate the optimal relation between C:N:P that could influence the best organic matter removal (OMR) in aerobic bioreactors with 50 ml during 30 days. It was noticed that when one worked with 35 mg KH{sub 2}PO{sub 4}/100 g soil, without adding nitrogen source, the OMR was 35%. Furthermore, it was noticed that the highest concentration of nitrogen and phosphorus was a limiting factor for microbial degradation and this resulted in the lowest OMR. At second, it was designed in aerobic bioreactor with 500 ml for 45 days and worked with the optimal concentrations of added phosphorus from the last stage. Although the assays have focused that nitrogen was not necessary to add to the soil, it was worked with 2,5 g (NH{sub 4}){sub 2}SO{sub 4}/100 g soil. The OMR was 46%, Oil and Grease removal was around 38% and TPH removal was around 45%. (author)

  16. Evaluation of welding by MIG in martensitic stainless steel; Avaliacao da soldagem pelo processo MIG em aco inoxidavel martensitico

    Energy Technology Data Exchange (ETDEWEB)

    Fernandes, M.A. [Universidade Estadual de Campinas (UNICAMP), SP (Brazil); Mariano, N.A.; Marinho, D.H.C. Marinho, E-mail: neideaparecidamariano@gmail.co [Universidade Federal de Alfenas (UNIFAL), Pocos de Caldas, MG (Brazil)

    2010-07-01

    This work evaluated structure's characterization and mechanical properties after the welding process of the stainless steel CA6NM. The employed welding process was the metal active gas with tubular wire. The control of the thermal cycle in the welding process has fundamental importance regarding the properties of the welded joint, particularly in the thermally affected zone. The mechanical properties were appraised through impact resistance tests and the hardness and microstructure through metallographic characterization and Ray-X diffraction. The parameters and the process of welding used promoted the hardness and toughness appropriate to the applications of the steel. Welding energy's control becomes an essential factor that can affect the temperature of carbide precipitation and the nucleation of the retained austenite in the in the region of the in the thermally affected zone. (author)

  17. External exposure assessment in dwelling built with phosphogypsum; Avaliacao da exposicao externa em residencia construida com fosfogesso

    Energy Technology Data Exchange (ETDEWEB)

    Villaverde, Freddy Lazo

    2008-07-01

    In this study it was evaluated the viability of the use of phosphogypsum plates as a building material in the dwelling construction. Thus, the effective dose due to external gamma exposure was assessed through the {sup 226}Ra, {sup 232}Th, {sup 210}Pb e {sup 40}K activity concentration in phosphogypsum plates. Samples of this material were analyzed by high resolution gamma spectrometry for their natural radionuclide activity concentration. The radium equivalent activity and extern ai and inter nai hazard indices were also calculated. The plates were made with phosphogypsum from fertilizer industries located in Cajati, Cubatao and Uberaba. The samples were identified according to phosphogypsum origin, Cajati (CA), Cubatao (CT) and Uberaba (UB). The activity concentrations results varied from 15.9 to 392 Bq kg{sup -1} for {sup 226}Ra, 26.1 to 253 Bq kg{sup -1} for {sup 232}Th, and 27.4 to 852 Bq kg{sup -1} for {sup 210}Pb. The results of {sup 40}K were lower than 81 Bq kg{sup -1}. The annual effective dose was obtained through the dosimetric model with reference standard room concept, the results were 0.02 mSv y{sup -1} for a house built with phosphogypsum from origin CA, 0.2 mSvy{sup -1} for CT phosphogypsum and 0.14 mSvy{sup -1} for UB phosphogypsum, everything the effective doses were below 1 mSvy{sup -1}, an annual effective dose limit for public exposure by International Commission on Radiological Protection. (author)

  18. Evaluation of measurement methods for diffuse solar radiation; Avaliacao de metodos de medicao da radiacao solar difusa

    Energy Technology Data Exchange (ETDEWEB)

    Ricieri, Reinaldo Prandini; Escobedo, Joao Francisco; Almeida Frisina, Valeria de [UNESP, Botucatu, SP (Brazil). Faculdade de Ciencias Agronomicas. Dept. de Ciencias Ambientais

    1998-07-01

    The evaluation results from measuring methods of the diffuse solar radiation, disc and shadow ring are described compared to the method by difference between the global radiation and the direct radiation projected in a horizontal plane. The disc method is dependent on the diffuse radiation anisotropy, with an average relative deviation around 7.1% with percentages according to the sky cover; 11.56% for open sky days; 4.8% for partly cloudy days and 2.43% for cloudy days. The shadow ring method is also sky cover dependent with an average relative deviation 8.0% ranging from 8.99% for open sky days; 7.70% for partly cloudy and 2.5% for cloudy days. (author)

  19. Influence of ionizing radiation on Trypanosoma cruzi; Influencia da radiacao ionizante sobre o Trypanosoma cruzi

    Energy Technology Data Exchange (ETDEWEB)

    Szarota, Rosa Maria

    2006-07-01

    Chagas's disease is one of the major public health problems in South America, promoting high prejudice to the local population. Despite the massive efforts to control it, this disease has no cure and presents puzzling unsolved questions. Considering that many researchers have used ionizing radiation to modify protozoans or biomolecules, we investigated the immunological response aspects of susceptible and resistant mice using irradiated parasites. Low radiation doses preserved the reproductive and invasive capacities of the parasite. Both susceptible and resistant animals, after immunization with irradiated parasites produced specific antibodies. After a challenge, the animals presented low parasitaemia, excepting those immunized with the antigen irradiated with higher doses. Using low radiation doses, we were able to selectively isolate trypomastigotes, leading to an improvement in the quality of the immune response, as previously reported when performing complement system assays. These data highlight the importance of selecting trypomastigote forms for immunization against T. cruz; and point towards ionizing radiation as an alternative to achieve this selection, since when this procedure is performed using complement, the subsequent steps are impaired by the difficulties to remove this component from the system. (author)

  20. Analisis de redes sociales y procesos de influencia en la toma de decision grupal

    Directory of Open Access Journals (Sweden)

    Jorge Ricardo Vivas

    2001-01-01

    Full Text Available En el presente trabajo se analizan los procesos de influencia por medio del estudio de las relaciones entre medidas convencionales y estructurales en tareas de toma de decisión grupal. Se exploraron los componentes de conectividad y prestigio como facilitadores del proceso de influencia; la conectividad por medio del flujo global, la participación, la densidad de la red ego centrada y la cohesión o distancia reticular. El prestigio se analizó por medio del status sociométrico, medidas de influencia y centralidad (grado, prestigio y poder y medidas de equivalencia estructural para delimitar roles y posiciones. Se utilizó la prueba Supervivencia en la Luna y participaron 70 alumnos de tercer año de la Carrera de Psicología. Los resultados muestran que existe una asociación significativa entre el conocimiento previo a la tarea y la influencia social medida como contribución al producto grupal, que las medidas de centralidad tienen relación con aspectos de la dinámica grupal y no con la contribución al producto y que los roles varían dentro y fuera de la tarea. La influencia está significativamente asociada a la densidad de la red personal. La interpretación de los resultados sugiere que las redes personales de baja densidad favorecen la capacidad de influencia en la producción grupal y que la alta cohesión y conectividad subgrupal la deterioran. También sugieren que las medidas de centralidad se relacionan con influencia en el tráfico comunicacional pero no con la productividad. Y que el status previo y el obtenido durante la actividad, no se vinculan con la producción.

  1. La influencia de los cambios climaticos y medio-ambientales en la (re-)emergencia de zoonosis: la experiencia de educacion en Salud Publica Veterinaria de la red SAPUVETNET

    OpenAIRE

    De Meneghi, Daniele; Rosenfeld, Carla; Padre, Ludovina; Pujol, Carolina; Estrada- Peña, Agustín

    2011-01-01

    La influencia de los cambios climaticos y medio-ambientales en la (re-)emergencia de zoonosis: la experiencia de educacion en Salud Publica Veterinaria de la red SAPUVETNET Daniele De Meneghi1, Carla Rosenfeld2, Ludovina Padre3, Carolina Pujol4*, Agustín Estrada- Peña5 1Facoltà di Medicina Veterinaria, Università degli Studi di Torino, Via L. da Vinci 44, 10095 Grugliasco, Italia. Tel. +39-011-6709189, ; 2 Facultad de Ciencias Veterinaria, Universidad Aus...

  2. Influencia del Capital Intelectual en la Competitividad de los Hoteles

    Directory of Open Access Journals (Sweden)

    Jorge Luis Heredia Heredia

    2009-01-01

    Full Text Available El objetivo de la presente investigación es conocer la influencia del capital intelectual en la competitividad de las empresas hoteleras de 1 a 5 estrellas de Aguascalientes, México. La medición del capital intelectual, que es el recurso intangible de las organizaciones contenido en el capital humano, capital estructural y capital relacional que genera competitividad y riqueza presente y futura, se realiza a través de un instrumento tipo Likert de 61 reactivos, cuyos resultados son comparados con la competitividad de los hoteles, medida a través de la rentabilidad por habitación disponible. Los resultados muestran la relación positiva entre el capital intelectual y la competitividad de los hoteles. La información podría ser útil en al menos tres dimensiones: primero, para diseñar los planes estratégicos de las empresas hoteleras; segundo, como apoyo para el diseño de las políticas del sector turismo y, tercero, como base académica para continuar en el desarrollo trabajos sobre el capital intelectual en otro tipo de organizaciones, con el interés de apoyar las decisiones empresariales y las políticas económicas.

  3. Influência do calçado de salto alto na atividade eletromiográfica do músculo quadríceps em mulheres com e sem síndrome da dor femoropatelar durante a tarefa de levantar e sentar Influencia del calzado de tacón alto en la actividad electromiográfica del músculo cuádriceps en mujeres con y sin síndrome de dolor patelofemoral durante la tarea de levantarse y sentarse Influence of high-heeled shoes on the quadriceps electromyographic activity in women with and without patellofemoral pain syndrome during the sit-to-stand task

    Directory of Open Access Journals (Sweden)

    Laísla da Silva Paixão Batista

    2013-03-01

    Full Text Available O objetivo do estudo foi analisar a influência do calçado de salto alto na atividade eletromiográfica (EMG do músculo quadríceps durante a tarefa de sentar e levantar. Participaram deste estudo 10 voluntárias assintomáticas com 20,2±3,0 anos e 10 voluntárias com síndrome da dor femoropatelar (SDFP com 21,3±3,4 anos. As voluntárias executaram a tarefa de sentar e levantar em 3 diferentes condições: descalças, com tênis e com calçado de salto de 10 cm. A atividade EMG do vasto medial oblíquo (VMO, vasto lateral (VL e reto femoral (RF foi registrada durante a execução das tarefas por meio de eletrodos de superfície simples diferencial conectados ao eletromiógrafo. Para comparação entre grupos e tarefas, foi utilizado o teste ANOVA com medidas repetidas e o post hoc do teste de Tukey (pEl objetivo del estudio fue analizar la influencia del calzado de tacón alto en la actividad electromiográfica (EMG del músculo cuadríceps durante la tarea de sentarse y levantarse. Participaron de este estudio 10 voluntarias asintomáticas con 20,2±3,0 años y 10 voluntarias con síndrome de dolor patelofemoral (SDPF con 21,3±3,4 años. Las voluntarias ejecutaron la tarea de sentarse y levantarse en tres diferentes condiciones: descalzas, con zapatillas y con calzado de tacón de diez centímetros. La actividad EMG del vasto medial oblícuo (VMO, vasto lateral (VL y recto femoral (RF fue registrada durante la ejecución de las tareas por medio de electrodos de superficie diferenciales conectados al electromiógrafo. Para la comparación entre grupos y tareas fue utilizada la prueba ANOVA con medidas repetidas y post test de Tukey (pThe purpose of this study was to analyze the influence of high-heeled shoes on the quadriceps electromyographic activity (EMG during the sit-to-stand task. Ten healthy females (20.2±3.0 years and 10 females with patellofemoral pain syndrome (PFPS (21.3±3.4 years participated in this study. The subjects

  4. Influencia de la explotación de aguas subterráneas en un sector del área periurbana de La Plata

    OpenAIRE

    Patricia Laurencena; Marta Deluchi; Adolfo Rojo; Eduardo Kruse

    2010-01-01

    En el sector del área periurbana de La Plata, la explotación de aguas subterráneas da lugar a una competencia de uso del recurso entre consumo humano y riego. El objetivo del trabajo es analizar la influencia generada por el desplazamiento de la batería de pozos de explotación desde el área urbana hacia un sector del área periurbana, donde además se extrae agua subterránea para el desarrollo hortiflorícola. La necesidad de extracción de mayores volúmenes de agua subterránea para proveer de ag...

  5. Influência da freqüência de estímulos na instalação do bloqueio neuromuscular produzido pelo rocurônio e pancurônio: avaliação pelo método acelerográfico Influencia de la frecuencia de estímulos en la instalación del bloqueo neuromuscular producido por el rocuronio y pancuronio: evaluación por el método acelerográfico Influence of stimulation frequency on rocuronium and pancuronium-induced neuromuscular block onset: acceleromyography evaluation

    Directory of Open Access Journals (Sweden)

    Derli da Conceição Munhóz

    2004-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Fatores relacionados ao paciente e ao bloqueador neuromuscular (BNM, assim como outros inerentes à monitorização da função neuromuscular podem influenciar na instalação do bloqueio neuromuscular. O objetivo deste estudo foi avaliar a influência de duas diferentes freqüências de estímulos sobre o tempo de instalação do bloqueio produzido pelo pancurônio e pelo rocurônio. MÉTODO: Foram incluídos no estudo 120 pacientes, estado físico ASA I e II, submetidos a cirurgias eletivas sob anestesia geral, distribuídos aleatoriamente em dois grupos, de acordo com a freqüência de estímulo empregada, para a monitorização do bloqueio neuromuscular: Grupo I - 0,1 Hz (n = 60 e Grupo II - 1 Hz (n = 60. Em cada grupo formaram-se dois subgrupos (n = 30 de acordo com o bloqueador neuromuscular empregado: Subgrupo P (pancurônio e Subgrupo R (rocurônio. A medicação pré-anestésica consistiu de midazolam (0,1 mg.kg-1 por via muscular, 30 minutos antes da cirurgia. A indução anestésica foi obtida com propofol (2,5 mg.kg-1 precedido de alfentanil (50 µg.kg-1 e seguido de pancurônio ou rocurônio. Os pacientes foram ventilados sob máscara com oxigênio a 100% até a obtenção de redução de 75% ou mais na amplitude da resposta do músculo adutor do polegar, quando foram realizadas as manobras de laringoscopia e intubação traqueal. A função neuromuscular foi monitorizada com aceleromiografia. Foram avaliados: tempo de início de ação do pancurônio e do rocurônio; tempo para instalação do bloqueio total e condições de intubação traqueal. RESULTADOS: Os tempos médios (segundos para o início de ação e instalação de bloqueio neuromuscular total produzido pelo pancurônio foram: Grupo I (159,33 ± 35,22 e 222 ± 46,56 e Grupo II (77,83 ± 9,52 e 105,96 ± 15,58; para o rocurônio: Grupo I (83 ± 17,25 e 125,33 ± 20,12 e Grupo II (48,96 ± 10,16 e 59,83 ± 10,36 com diferença significativa

  6. Development of test objects for image quality evaluation of digital mammography; Desenvolvimento de objetos de teste para avaliacao da qualidade da imagem em mamografia digital

    Energy Technology Data Exchange (ETDEWEB)

    Pinto, Vitor Nascimento de Carvalho

    2013-07-01

    Mammography is the image exam called 'gold standard' for early detection of breast cancer. 111 Brazil, more than eight million mammograms are carried out per year. With the advancement of technology, the digital systems CR and DR for this diagnostic modality have been increasingly implemented, replacing the conventional screen-film system, which brought environmental problems, like the disposal of chemical waste, and is also responsible for the rejection of radiographic films with processing artifacts. Digital systems, besides not experiencing the problem of environmental pollution, are still capable of image processing, allowing a much lower rejection rate when compared to the conventional system. Moreover, the determination of an accurate diagnosis is highly dependent on the image quality of the examination. To ensure the reliability of the images produced by these systems, it is necessary to evaluate them on a regular basis. Unfortunately, there is no regulation in Brazil about the Quality Assurance of these systems. The aim of this study was to develop a set of test objects that allow the evaluation of some parameters of image quality of these systems, such as field image uniformity, the linearity between the air Kerma incident on detector and the mean pixel value (MPV) of the image, the spatial resolution of the system through the modulation transfer function (MTF) and also to suggest an object to be applied in the evaluation of contrast-to-noise ratio (CNR) and signal-difference-to-noise ratio (SDNR). In order to test the objects. 10 mammography centers were evaluated, seven with CR systems and three with the DR systems. To evaluate the linearity, besides the test objects high sensitivity dosimeters were necessary to be used, namely LiF:Mg,Cu,P TL dosimeters. The use of these dosimeters was recommended in order to minimize the time required to perform the tests and to decrease the number of exposures needed. For evaluation of digital images in DICOM format, the software {sup O}BJ{sub I}QJeduced{sup ,} version 3.0, was used. It was developed by the team of Prof.. Dr. Nicholas Marshall at the Catholic University of Leuven, Belgium. The results were very promising, leaving opened the possibility of future work as the optimization of the correction factors and uncertainties for the dosimeters as well as the applicability of the test objects in evaluating the image quality of digital systems across the country. (author)

  7. Use of different simulators to quality evaluation of image quality in digital mammography; Utilizacao de diferentes simuladores na avaliacao da qualidade da imagem em mamografia digital

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Leslie S.; Coutinho, Celia M.C., E-mail: leslie@ird.gov.br, E-mail: celia@ird.gov.br [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Magalhaes, Luis A.G.; Almeida, Carlos Eduardo de, E-mail: luisalexandregm@hotmail.com, E-mail: cea71@yahoo.com.br [Universidade do Estado do Rio de Janeiro (LCR/UERJ), Rio de Janeiro, RJ (Brazil). Laboratorio de Ciencias Radiologicas

    2013-11-01

    In this study, the digital images were acquired with different exposure simulators to evaluate the quality of the image, noting the tumor mass detection, microcalcification fiber and representing regions of interest during mammography. The technical parameters of exposure depends on the thickness and composition of the breast, thus affecting the dose and image quality. The simulators were used: ACR, SBP 1054, BREAST PHANTOM CIRS and for evaluation of image quality, as well as measures kerma incident on the entrance surface (Ki) and calculating the mean glandular dose (MGD)

  8. Evaluation of mechanical conditions of turbomachineries for spectral signature of vibration and neural networks; Avaliacao da condicao mecanica de turbomaquinas pela assinatura espectral da vibracao e redes neurais

    Energy Technology Data Exchange (ETDEWEB)

    Adejoro, Samuel T.; Lopes, Tiago A.P.; Rebello, Joao M.A. [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia]. E-mail: samuel@peno.coppe.ufrj.br

    2003-07-01

    The condition monitoring of machinery generally considers the vibration signature as the main parameter to be measured and is one of the bases of predictive maintenance . The mechanical condition/integrity evaluation can be performed by comparing the measured spectrum to a reference spectrum and is based on the premise that usually exist spectral characteristics that identifies the fault. Nine typical faults are considered and the automation of the capability to interpret the vibration data is a field for the application of artificial neural networks. This article presents a comparative study for three types of neural networks: MLP, fuzzy-MLP and SOM for turbomachinery mechanical faults classification. The mean standards for the faults were obtained from available literature and random changes were introduced in order to establish the training data for the neural networks. (author)

  9. Evaluation of the introduction of cogeneration for refrigeration in the fisheries sector of the Amazon; Avaliacao da introducao da cogeracao para refrigeracao no setor pesqueiro do Amazonas

    Energy Technology Data Exchange (ETDEWEB)

    Cruz, Ricardo Wilson Aguiar da [Universidade Estadual do Amazonas (UEA), Manaus (Brazil)], e-mail: rcruz@uea.edu.br; Nebra, Silvia Azucena [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Mecanica], e-mail: sanebra@fem.unicamp.br; Cartaxo, Elizabeth Ferreira [Universidade Federal do Amazonas (UFAM), Manaus, AM (Brazil)], e-mail: ecartaxo@ufam.edu.br

    2004-07-01

    This work analyses the opportunity to introduce cogeneration for the production of aquammonia absorption refrigeration in the autonomous Amazons State power system, by one hand as a means to improve its efficiency and by another, solve the deficiency the State has to store its fish-ing production. (author)

  10. 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)

  11. Density evaluation by computerized tomography in plain soils over different manipulation systems; Avaliacao da densidade pelo metodo da tomografia computadorizada de um planossolo sob diferentes sistemas de manejo

    Energy Technology Data Exchange (ETDEWEB)

    Pedrotti, Alceu [Lavras Univ., MG (Brazil). Dept. de Ciencia do Solo; Pauletto, Eloy Antonio [Pelotas Univ., RS (Brazil). Dept. de Solos; Crestana, Silvio [Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA), Sao Carlos, SP (Brazil). Centro Nacional de Pesquisa e Desenvolvimento de Instrumentacao Agropecuaria (CNPDIA)

    1996-08-01

    The objective of this paper is the evaluation of a plain soil density in different culture systems determined by X ray computerized tomography.It was observed a larger variation in densities in soils profiles analysed. The identification of layers is better utilising computerized tomography than others technic 1 fig.

  12. Quality assessment of radiopharmaceuticals in nuclear medicine services at Northeast states, Brazil; Avaliacao da qualidade de radiofarmacos em servicos de medicina nuclear de estados da regiao nordeste

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Wellington Gomes de

    2012-07-01

    The radiopharmaceuticals are used in the field nuclear medicine services (NMS) as tracer in the diagnoses and treatment of many diseases. Radiopharmaceuticals used in nuclear medicine and usually have a minimum of pharmacological effect. The procedures for labelling Radiopharmaceuticals should be observed in order to minimize risks to patients, employees and individuals from the public, and to be administered in humans, must be sterile and free of pyrogens and possess elements all measures of quality controls required a conventional drug. The 'Agencia Nacional de Vigilancia Sanitaria (ANVISA)' in its 'Resolucao de Diretoria Colegiada' (RDC) No. 38 of June 4{sup th} 2008, decided that the NMS must perform quality control in the generators eluate and radiopharmaceuticals according to recommendations of manufacturers and scientific evidence accepted by ANVISA. Thus, this study proposes to evaluate the quality of the generator {sup 99M}o-{sup 99m}Tc eluate and radiopharmaceuticals labeled with {sup 99m}Tc used in most NMS of some states in the Northeast, in relation to radionuclide, chemical, radiochemical purity and pH and promote the inclusion of procedure for quality control of radiopharmaceuticals in routine NMS. The results show that 90% radionuclidic purity, 98.2% purity chemical and radiochemical purity of 46% and 100% of the eluates are in agreement with international pharmacopoeias; already radiopharmaceuticals showed 82.6% purity and all radiochemical pH values are also in accordance with international pharmacopoeias. Even with so many positive results, staff the majority of MNS was not able to perform the quality control of the eluates and radiopharmaceuticals. Showing the importance of implementing of quality control programs of the eluates and radiopharmaceuticals in nuclear medicine. (author)

  13. 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 increase of temperature during radiation, and probably followed by a new scraping and root polishing with conventional instruments in an attempt to obtain a smoother and more homogeneous root surface. (author)

  14. 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

    1995-12-31

    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.

  15. Evaluation of gels obtained from acetylation of chitosan in heterogeneous medium; Avaliacao de geis obtidos a partir da acetilacao da quitosana em meio heterogeneo

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, Rosangela Balaban; Silva, Dayse Luzia Pinheiro da; Costa, Marta [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Quimica]. E-mail: balaban@digi.com.br; Raffin, Fernanda Nervo [Universidade Federal do Rio Grande do Norte (UFRGN), Natal, RN (Brazil). Centro de Ciencias da Saude. Dept. de Quimica, Tecnologia Farmaceutica e de Alimentos; Ruiz, Naira Machado da Silva [Centro de Pesquisa Leopoldo A. Miguez de Mello (CENPES), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Chitosan was acetylated during 2, 5 and 10 h and physical gels were obtained at different polymer concentrations in N,N-dimethylacetamide containing 5% of LiCl. Acetylation was confirmed by infrared spectroscopy and {sup 13}C NMR, and degrees of acetylation in the range of 0.82-0.91 were determined by NMR. The O-acetylation degree (0.12-0.15) was exclusively determined by a volumetric method. Rheological studies showed that the storage modulus values were smaller for the more acetylated samples and increased with the temperature and the polymer concentration. All the gels presented storage modulus superior to loss modulus, evidencing more elastic than viscous characteristics. The results obtained in this work suggest a gelation process based on a balance between O and N-acetylation and intermolecular bonds. (author)

  16. Evaluation of imaging methods in the diagnosis of urolithiasis: review of the literature; Avaliacao dos metodos de imagem no diagnostico da urolitiase: revisao da literatura

    Energy Technology Data Exchange (ETDEWEB)

    Freitas, Ricardo Miguel Costa de; Silva, Luciana Costa; Santos, Jovita Lane Soares; Tavares Junior, Wilson Campos [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Hospital das Clinicas. Servico de Radiologia e Diagnostico por Imagem]. E-mail: rmcfreitas@ig.com.br

    2004-08-01

    The aim of this study is to compare helical computed tomography with imaging studies currently used to evaluate patients with acute low back pain. In addition, we briefly review the pathophysiology of urolithiasis. The literature published in the last 30 years was reviewed, and the following methods were discussed: plain abdominal radiographs, intravenous pyelography, ultrasound of the urinary tract, and helical computed tomography. Helical computed tomography showed high sensitivity and specificity for detecting urolithiasis, virtually showing all stones, except in patients receiving indinavir. The accuracy of plain abdominal radiographs associated with ultrasound was similar to helical computed tomography, although the latter showed superiority as an isolated method. Data from literature suggest that whenever helical computed tomography is available, it is helpful in the evaluation of low back pain and also allows differential diagnosis between conditions that mimic the symptoms of urolithiasis.(author)

  17. Radiographic evaluation of adenoidal size in children: methods of measurement and parameters of normality; Avaliacao radiografica da adenoide em criancas: metodos de mensuracao e parametros da normalidade

    Energy Technology Data Exchange (ETDEWEB)

    Araujo Neto, Severino Aires de [Centro de Assistencia Integral a Saude da Mulher (CAISM), Campinas, SP (Brazil)]. E-mail: severinoaires@hotmail.com; Queiroz, Suelio Marinho de [Tomovale, Sao Jose dos Campos, SP (Brazil); Baracat, Emilio Carlos Elias [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Ciencias Medicas. Dept. de Pediatria; Pereira, Ines Minniti Rodrigues [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Ciencias Medicas. Dept. de Radiologia

    2004-12-01

    Radiograph of the nasopharynx is still the most commonly used imaging method to investigate the adenoidal tissue. Due to the variety and complexity of proposed methods to measure the adenoid size, some radiologists prefer subjective evaluation, which can, however, be imprecise and inaccurate. We review and describe several methods to determine the adenoid size, taking into account the practicity, accuracy and precision with the aim of pointing out the best methods to be applied in daily routine practice. (author)

  18. 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 Eldorado. (author)

  19. Estudio de la influencia de la microestructura sobre la deformabilidad en caliente de un acero inoxidable dúplex

    Directory of Open Access Journals (Sweden)

    Iza-Mendia, A.

    1998-05-01

    Full Text Available The complexity of the hot deformation behaviour of the ferrite and austenite in a duplex structure is increased as compared with that of single phase ferritic or austenitic steels. Important factors are: the spatial phase distribution with respect to the direction of the imposed deformation, the codeformation of both phases having considerably different mechanical properties, and the nature of the interface between austenite and ferrite. In the present study, the influence of these factors on the crack formation during the hot deformation is analyzed.

    El comportamiento frente al conformado en caliente de la ferrita y de la austenita, en una estructura dúplex, es muy diferente al que presentan ambas fases por separado en los aceros monofásicos austeníticos o ferríticos. A ello contribuyen, entre otros, la distribución espacial de las fases con respecto a la deformación impuesta, la codeformación de dos fases, con propiedades mecánicas muy diferentes, y la naturaleza de la intercara. En el presente trabajo se analiza la influencia de estos factores en la formación de daño bajo condiciones de deformación en caliente.

  20. Influencia de las regiones de estabilidad del biorreactor

    Directory of Open Access Journals (Sweden)

    Isabel Cristina Paz Astudillo

    2011-07-01

    Full Text Available Influence of bioreactor stability regions in the efficient production of fuel ethanol Título corto: Influencia de las regiones de estabilidad en la producción de alcohol carburanteResumen Colombia ha desarrollado un proyecto ambicioso en la producción de alcohol carburante, y actualmente es uno de los países líderes de América Latina en la producción de biocombustibles. No obstante, algunas de sus plantas industriales productoras de etanol presentan problemas durante el arranque y la operación de los fermentadores, que afectan adversamente la productividad del proceso global. Estudios teóricos y experimentales demuestran que el comportamiento dinámico del proceso depende de los fenómenos de estabilidad que exhibe el sistema. En este trabajo se muestra la influencia de las regiones de estabilidad sobre la eficiencia del proceso tomando como criterios de evaluación índices de impacto económico y ambiental. Para esto, se realizó un análisis de estabilidad donde se tomó como parámetro de operación principal la velocidad de dilución. Se empleó un programa propio desarrollado sobre Matlab® para generar diagramas de bifurcación y de fase. El algoritmo de reducción de residuos (WAR desarrollado por la Agencia de Protección Ambiental de los Estados Unidos, y el software SuperPro Designer®, fueron utilizados respectivamente para hacer la evaluación ambiental y económica del proceso. Como resultado, se evidenció que los procesos continuos de fermentación se pueden llevar a cabo en diferentes regiones de estabilidad, y que las variables de respuesta, tales como el rendimiento, dependen de la región de operación seleccionada. Finalmente, se llegó a la conclusión de que la evaluación de la estabilidad de los procesos de fermentación debe incluirse en las etapas de diseño de bioprocesos para garantizar su buen desempeño.  Palabras clave: bioetanol, fermentación, análisis de estabilidad, impacto económico, impacto

  1. Influência da posição prona na oxigenação, frequência respiratória e na força muscular nos recém-nascidos pré-termo em desmame da ventilação mecânica Influencia de la posición prona en la oxigenación, frecuencia respiratoria y en la fuerza muscular en los recién nacidos pre-término en destete de la ventilación mecánica Influence of prone position on oxigenation, respiratory rate and muscle strength in preterm infants being weaned from mechanical ventilation

    Directory of Open Access Journals (Sweden)

    Rita de Cássia Malagoli

    2012-06-01

    Full Text Available OBJETIVO: Verificar a influência do posicionamento do recém-nascido prematuro sobre a força da musculatura respiratória, oxigenação e frequência respiratória. MÉTODOS: Estudo transversal com amostra pareada de recém-nascidos com idade gestacional inferior a 34 semanas, intubados, em processo final de desmame de ventilação mecânica. Foram excluídos aqueles com malformações, síndromes genéticas, doenças neuromusculares, traqueostomizados e em pós-operatório de cirurgias abdominais ou torácicas. As medidas de pressão inspiratória máxima foram aferidas utilizando-se manovacuômetro digital; a frequência respiratória através da observação das incursões respiratórias das crianças em um minuto e a saturação de oxigênio por oxímetro, nas posturas prona e supino. Os testes estatísticos aplicados foram Kruskal-Wallis, o teste t de Student e o coeficiente de correlação de Pearson, sendo significante pOBJETIVO: Verificar la influencia del posicionamiento del recién-nacido prematuro sobre la fuerza muscular respiratoria, oxigenación y frecuencia respiratoria. MÉTODOS: Estudio transversal con muestra pareada de recién nacidos con edad gestacional inferior a 34 semanas, entubados, en proceso final de destete de ventilación mecánica. Se excluyeron a aquellos con malformaciones, síndromes genéticos, enfermedades neuromusculares, traqueostomizados y en post-operatorio de cirugías abdominales o torácicas. Las medidas de presión inspiratoria máxima fueron verificadas mediante el uso de manovacuómetro digital; la frecuencia respiratoria, mediante la observación de las incursiones respiratorias de los niños en un minuto y la saturación de oxígeno por oxímetro, en las posturas prona y supina. Las pruebas estadísticas aplicadas fueron Kruskal-Wallis, la prueba t de Student y el coeficiente de correlación de Pearson, siendo significante pOBJECTIVE:To verify the influence of preterm infant positioning on

  2. Influencia del clima escolar y familiar en adolescentes, víctimas de ciberacoso

    OpenAIRE

    Jessica Ortega Barón; Sofía Buelga Vasquez; María Jesús Cava Caballero

    2016-01-01

    El ciberacoso es un fenómeno de creciente preocupación social que afecta cada vez más a niños y adolescentes de todos los países desarrollados. A diferencia de la considerable literatura que hay sobre las relaciones entre el acoso escolar y el contexto familiar y escolar, todavía hay pocos trabajos sobre la influencia de estos entornos sociales en el problema del ciberacoso. Mediante una metodología cuantitativa, el objetivo principal del presente estudio fue analizar la influencia del contex...

  3. Influencia del clima escolar y familiar en adolescentes, víctimas de ciberacoso

    OpenAIRE

    Ortega Barón, Jessica; Buelga, Sofía; Cava, María Jesús

    2016-01-01

    El ciberacoso es un fenómeno de creciente preocupación social que afecta cada vez más a niños y adolescentes de todos los paí- ses desarrollados. A diferencia de la considerable literatura que hay sobre las relaciones entre el acoso escolar y el contexto familiar y escolar, todavía hay pocos trabajos sobre la influencia de estos entornos sociales en el problema del ciberacoso. Mediante una metodología cuantitativa, el objetivo principal del presente estudio fue analizar la influencia...

  4. Construcción de conceptos físicos en estudiantes. La influencia del contexto.

    OpenAIRE

    Fernando Flores C.; Leticia Gallegos Cázares

    1999-01-01

    Uno de los aspectos poco analizados en las investigaciones sobre ideas previas y representación conceptual de los estudiantes de física es la influencia que tiene el contexto en la construcción de sus concepciones. En este trabajo se muestra cómo el contexto físico influye en el desarrollo de las ideas previas y la interpretación de los fenómenos físicos de los estudiantes del bachillerato. Se hace notar que esta influencia aparece también en el desarrollo histórico de los conceptos físicos, ...

  5. Antecedentes e consequencia da atitude frente ao anuncio nos idosos

    OpenAIRE

    Sanchez, Javier; Estrada, Marta; Moliner, Miguel Angel; Fandos, Juan Carlos

    2011-01-01

    A importancia sócio-economica adquirida nos ultimos anos na Espanha e em outros paises europeus pelo emergente mercado dos idosos toma necessaria o estudo de suas particularidades como consumidores. As mudanças ocorridas durante o proceso do envelhecimento exercem uma influencia na percepçao do fenómeno publicitario e, par conseguinte, na atitude manifestada frente ao anúcio. o estudo nos idosos dos antecedentes da atitude frente ao anuncio e suas consequencias no contexto do modelo de mediaç...

  6. Influência da procainamida sobre o bloqueio neuromuscular produzido pelo rocurônio e investigação sobre o mecanismo de ação da procainamida na junção neuromuscular Influencia de la procainamida sobre el bloqueo neuromuscular producido por el rocuronio e investigación sobre el mecanismo de acción de la procainamida en la junción neuromuscular Influence of procainamide on the neuromuscular blockade caused by rocuronium and investigation on the mechanism of action of procainamide on the neuromuscular junction

    OpenAIRE

    Thalita Duque Martins; Yolanda Christina S. Loyola; Angélica de Fátima de Assunção Braga

    2007-01-01

    JUSTIFICATIVA E OBJETIVOS: A potencialização da procainamida sobre o bloqueio neuromuscular produzido pela d-tubocurarina já está comprovada, porém o mecanismo é controverso. O objetivo do estudo foi avaliar a influência da procainamida no bloqueio neuromuscular produzido pelo rocurônio e investigar os mecanismos desta interação. MÉTODO: Foram utilizados 15 ratos (250 a 300 g) em preparação descrita por Bülbring. Formaram-se os seguintes grupos (n = 5 cada): procainamida - 20 µg.mL-1 (G...

  7. Hipotensão arterial em cirurgia de revascularização do miocárdio: influência dos inibidores da enzima conversora de angiotensina Hipotensión arterial en cirugía de revascularización del miocardio: influencia de los inhibidores de la enzima conversora de angiotensina Arterial hypotension in myocardial revascularization surgery: influence of angiotensin-converting enzyme inhibitors

    Directory of Open Access Journals (Sweden)

    Míriam Gomes Jordão

    2002-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Os inibidores da enzima conversora da angiotensina (IECA são drogas muito utilizadas em estados hipertensivos e insuficiência cardíaca. Seu uso prolongado pode acarretar instabilidade hemodinâmica com episódios hipotensivos durante a indução anestésica. O objetivo deste estudo é comparar a incidência de hipotensão arterial em pacientes cronicamente tratados com IECA com pacientes não tratados com IECA, quando submetidos à anestesia para cirurgia de revascularização do miocárdio. MÉTODO: Participaram do estudo 50 pacientes, estado físico ASA II, III e IV, divididos em dois grupos: Grupo 1 - pacientes tratados com IECA por mais de dois meses e Grupo 2 - pacientes que não fazem uso de IECA. Os parâmetros avaliados foram pressão arterial média (PAM, freqüência cardíaca (FC, sendo anotados os menores valores da PAM e FC verificados em diferentes períodos da anestesia, e análise do segmento ST em D II e V5. Durante a CEC, foi determinada a resistência vascular sistêmica. RESULTADOS: A incidência de hipotensão arterial em pacientes anestesiados em uso de IECA foi maior do que no grupo controle em vários períodos da anestesia, mas principalmente na indução anestésica. Neste grupo foi necessário o uso de dopamina por tempo mais prolongado. Dos 26 pacientes tratados previamente com IECA, 23% necessitaram de drogas para correção da hipotensão desde a indução até a CEC e 19,1% em outros períodos da anestesia, perfazendo um total de 42,3%. No grupo controle nenhum paciente necessitou infusão contínua de drogas para aumentar a pressão arterial sistêmica, da indução até a CEC. Porém, 21% dos pacientes deste grupo necessitaram dopamina ou araminol em um ou mais períodos da anestesia. CONCLUSÕES: Neste estudo, os pacientes tratados com IECA, por tempo prolongado, apresentam maior incidência de hipotensão arterial na indução anestésica, necessitando, com maior freqüência, de

  8. Influência da clonidina por via venosa no custo de anestesia com sevoflurano em cirurgias de ouvido médio em regime ambulatorial Influencia de la clonidina por vía venosa en el costeo de anestesia con sevoflurano en cirugías de oído medio en régimen ambulatorial Influence of intravenous clonidine in the cost of sevoflurane anesthesia for outpatient middle ear procedures

    OpenAIRE

    Renato Mestriner Stocche; Luís Vicente Garcia; Jyrson Guilherme Klamt; Marlene Paulino dos Reis; Daniela Rocha Gil; Karin Luiza Magno Mesquita

    2004-01-01

    JUSTIFICATIVA E OBJETIVOS: A clonidina é um agente a2-agonista que diminui o consumo de anestésicos venosos e inalatórios. Este estudo visou avaliar a relação custo-benefício da medicação pré-anestésica com clonidina por via venosa em anestesia geral com sevoflurano em regime ambulatorial. MÉTODO: Trata-se de estudo encoberto, aleatório, controlado com placebo, realizado com pacientes com idade entre 15 e 52 anos. Os pacientes foram divididos em 3 grupos de 15: Grupo S (placebo), Grupo C3 (cl...

  9. Influência do uso crônico dos inibidores da enzima conversora da angiotensina na hipotensão arterial após indução anestésica: é necessário suspender esse fármaco no pré-operatório? Influencia del uso crónico de los inhibidores de la enzima conversora de la angiotensina en la hipotensión arterial después de la inducción anestésica: ¿es necesario suspender ese fármaco en el preoperatorio? Influence of angiotensin-converting enzyme inhibitors on hypotension after anesthetic induction: is the preoperative discontinuation of this drug necessary?

    Directory of Open Access Journals (Sweden)

    Verônica Vieira da Costa

    2009-12-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Tem sido sugerida a suspensão de medicamentos como os inibidores da enzima conversora de angiotensina (IECA com base em relatos de hipotensão arterial durante a anestesia. Isso pode implicar em maior risco de picos hipertensivos no intraoperatório, com efeitos deletérios para o paciente. O objetivo deste estudo foi avaliar a influência dos IECA utilizados no pré-operatório na ocorrência de hipotensão arterial durante anestesia. MÉTODO: Delineamento tipo caso controle, onde casos foram pacientes que apresentaram hipotensão arterial após indução da anestesia. Como controles foram selecionados pacientes da mesma faixa etária e sexo, submetidos à intervenção cirúrgica no mesmo período dos casos e que não apresentaram hipotensão arterial. As variáveis de interesse: idade, sexo, porte cirúrgico, diagnóstico prévio de hipertensão arterial sistêmica (HAS, uso de IECA, estado físico (ASA, sangramento no intraoperatório, técnica anestésica e tempo cirúrgico. RESULTADOS: 40 pacientes apresentaram hipotensão arterial, num total de 2.179 operações. Desses, 20 usaram IECA no dia da operação. O grupo controle foi composto por 171 pacientes, dos quais 11 usaram IECA. Na análise univariada foi encontrada associação entre hipotensão arterial e idade avançada (p JUSTIFICATIVA Y OBJETIVOS: En base a relatos de hipotensión arterial durante la anestesia, se ha sugerido la suspensión de medicamentos como los inhibidores de la enzima conversora de angiotensina (IECA. Eso puede redundar en un riesgo más elevado de picos hipertensivos en el intraoperatorio y con efectos perjudiciales para el paciente. El objetivo de este estudio, fue evaluar la influencia de los IECA utilizados en el preoperatorio si surge la hipotensión arterial durante la anestesia. MÉTODO: Delineamiento de tipo caso control, donde los casos fueron pacientes que presentaron hipotensión arterial después de la inducción de la

  10. Actitudes hacia la influencia de la sociedad en la ciencia y la tecnología

    Directory of Open Access Journals (Sweden)

    Manassero Mas, M.ª Antonia

    1999-01-01

    Full Text Available Not available.La filosofía tradicional de la ciencia presenta ésta como un conocimiento objetivo, aislado de influencias externas, mientras que la moderna sociología y epistemología de la ciencia sostienen la influencia de los factores contextuales. Este estudio analiza las actitudes de estudiantes y profesorado sobre la influencia de la sociedad en la ciencia y tecnología mediante una serie de cuestiones referidas a distintos factores sociales, como el gobierno, las empresas e industrias, el ejército, la cultura, los grupos de especial interés o la educación científica y tecnológica del público. Las actitudes obtenidas muestran diferente intensidad y se fundan en distintas razones justificativas, aunque se observa una tendencia a admitir mayoritariamente esta influencia sobre la ciencia cuando se refiere a un factor general, mientras que cuando la influencia de la sociedad se concreta en factores más concretos, las actitudes no concitan tanta unanimidad. Las diferencias entre estudiantes según el grado de exposición a la ciencia no son tan importantes como cabría esperar, y las diferencias de género, cuando se controla la variable anterior son escasas. El análisis comparativo entre profesorado y alumnado muestra más coincidencias que diferencias, y cuando se comparan los estudiantes canadienses con los españoles existen tantas diferencias como coincidencias. Finalmente, se discuten algunas implicaciones para la enseñanza de las ciencias desde una perspectiva de ciencia-tecnología-sociedad (CTS.

  11. Influencias de las impurezas en los combustibles residuales

    OpenAIRE

    Carlos Losada; Neyda Om Tapanes; Lucrecio Pérez

    2002-01-01

    A partir de considerar como campo experimental una planta generadora de electricidad que utiliza motores marinos MAN B&W L+V-28/32H, se demuestra que las impurezas formadas durante el proceso de fabricación, transportación, almacenamiento y consumo del combustible afectan la calidad de combustión y con ello los daños causados a los elementos del sistema.

  12. Influencias de las impurezas en los combustibles residuales

    Directory of Open Access Journals (Sweden)

    Carlos Losada

    2002-01-01

    Full Text Available A partir de considerar como campo experimental una planta generadora de electricidad que utiliza motores marinos MAN B&W L+V-28/32H, se demuestra que las impurezas formadas durante el proceso de fabricación, transportación, almacenamiento y consumo del combustible afectan la calidad de combustión y con ello los daños causados a los elementos del sistema.

  13. Patient Safety in Drug Therapy and the Influence of the Prescription in Dose Errors Seguridad del paciente en la terapéutica medicamentosa y la influencia de la prescripción médica en los errores de dosis Segurança do paciente na terapêutica medicamentosa e a influência da prescrição médica nos erros de dose

    Directory of Open Access Journals (Sweden)

    Fernanda Raphael Escobar Gimenes

    2010-12-01

    ineficiencia del tratamiento, comprometiendo así, la calidad de la asistencia prestada a los pacientes hospitalizados.Os objetivos foram analisar a redação da prescrição médica nos erros de doses, ocorridos em unidades de clínica médica de cinco hospitais brasileiros, e identificar as classes farmacológicas envolvidas nesses erros. Este é estudo descritivo que utilizou dados secundários, obtidos de pesquisa multicêntrica, realizada em 2005. A população foi composta por 1425 erros de medicação e a amostra por 215 erros de doses. Desses, 44,2% ocorreram no hospital E. Verificou-se presença de siglas e/ou abreviaturas em 96,3% das prescrições, ausência do registro do paciente em 54,4%, falta de posologia em 18,1% e omissão da data em 0,9%. Com relação ao tipo de medicamento, 16,8% eram broncodilatadores, 16,3% eram analgésicos, 12,1%, anti-hipertensivos e 8,4% eram antimicrobianos. A ausência da posologia nas prescrições pode favorecer a administração de doses erradas, resultando em ineficiência do tratamento, comprometendo a qualidade da assistência prestada aos pacientes hospitalizados.

  14. Influência de fatores anátomo-fisiológicos na medida indireta da pressão arterial: identificação do conhecimento dos enfermeiros Influencia de los rasgos anátomo-fisiológicos en la mensuración inversa de la presión arterial: identificación del conocimiento de los enfermeros Influence of the anatomical and physiological factors in the indirect measurement of blood pressure: identification of nursing knowledge

    Directory of Open Access Journals (Sweden)

    Thelma Leite de Araujo

    1998-10-01

    Full Text Available O estudo foi realizado com enfermeiros de hospitais de cardiologia e teve como objetivo caracterizar o conhecimento sobre os aspectos conceituais e fatores anátomo-fisiológicos que influenciam a medida indireta da pressão arterial.El estudo fué realizado con enfermeros de hospitales de cardiología y el objetivo fue caracterizar el conocimiento respecto a los rasgos conceptuales y anatomo-fisiológicos que influyen en la mensuración de la presión arterial.The study was developed by clinical nurses specialized in cardiology and had the purpose to characterize the kwowledge about the conceptual aspects and the anatomical and physiological factors that interfere in the marks of blood pressure.

  15. Influência da aterosclerose subclínica na função diastólica em indivíduos sem doença cardiovascular Influencia de la aterosclerosis subclínica en la función diastólica en individuos sin enfermedad cardiovascular Influence of subclinical atherosclerosis on diastolic function in individuals free of cardiovascular disease

    Directory of Open Access Journals (Sweden)

    Maristela Magnavita Oliveira Garcia

    2010-10-01

    Full Text Available FUNDAMENTO: É plausível que a aterosclerose subclínica altere a reserva coronariana e comprometa a função diastólica do ventrículo esquerdo. Entretanto, a associação entre os estágios subclínicos da aterosclerose e a função diastólica não foi estabelecida em indivíduos livres de doença cardiovascular. OBJETIVO: Testar a hipótese de que a aterosclerose subclínica tenha uma associação negativa com a função diastólica. MÉTODOS: Indivíduos > 35 anos de idade, sem doença cardiovascular, com pressão arterial normal e teste de esforço na esteira negativo, foram selecionados para avaliação da espessura da camada íntima-média (EIM carotídea através de ultrassonografia e dos parâmetros de função diastólica através de ecocardiografia, primariamente a razão E'/A' através do Doppler tecidual. RESULTADOS: Quarenta e oito indivíduos, com idade de 56 ± 10 anos, 67% do sexo feminino foram estudados. A EIM carotídea apresentou uma correlação negativa significante com a razão E'/A' no Doppler tecidual (r = - 0,437, p = 0,002. Indivíduos no quarto quartil da EIM apresentavam uma razão E'/A' significantemente mais baixa no Doppler tecidual (0,76 ± 0,25, quando comparados a indivíduos no primeiro (1,2 ± 0,29, segundo (1,2 ± 0,36 e terceiro quartis (1,1 ± 0,25 - p = 0,002. A EIM carotídea no quarto quartil (> 0,8 mm foi preditor independente da razão E'/A' (p = 0,02, após ajustes para variáveis potencialmente confundidoras, tais como idade, sexo feminino, circunferência da cintura, pressão arterial diastólica, HDL-colesterol e Risco de Framingham. CONCLUSÃO: O estágio inicial da doença arterial aterosclerótica está negativamente associado com os parâmetros de função diastólica em indivíduos saudáveis, independente da idade e características clínicas.FUNDAMENTO: Es plausible que la aterosclerosis subclínica altere la reserva coronaria y comprometa la función diastólica del ventr

  16. Influencia de los parámetros de corte con electrodo en las características de la zona de influencia térmica (ZIT). // Influence of cutting electrode parameters in the termic zone characteristics.

    OpenAIRE

    R. Batista Sánchez; R. Collazo Carceller; Fraga, E.; C. Figueroa Hernández

    2001-01-01

    El presente trabajo trata sobre las características microestructurales de la zona de influencia térmica con el uso del electrodoBISECOR, así como el régimen óptimo de trabajo.Palabras claves: Características microestructurales, zona de influencia térmica, electrodos , régimen detrabajo.__________________________________________________________________________________AbstractThe present paper deals with microestructural characteristics in the termic influence zone by means of the BISECORelectr...

  17. Deshidratación osmótica de la papaya chilena (Vasconcellea pubescens e influencia de la temperatura y concentración de la solución sobre la cinética de transferencia de materia Desidratação osmótica do mamão chileno (Vasconcellea pubescens e influência da temperatura e concentração da solução sobre a cinética de transferência de matéria

    Directory of Open Access Journals (Sweden)

    Antonio Vega-Gálvez

    2007-09-01

    Full Text Available El objetivo de este trabajo fue estudiar la cinética de deshidratación osmótica de la papaya chilena (Vasconcellea pubescens, utilizando dos variables experimentales: la temperatura (30, 40, 50 °C y concentración (40, 50 y 60% de la solución osmótica. Se determinó la variación de masa total, masa de agua y masa de sólidos solubles y se modeló con las ecuaciones difusionales, además en esta investigación se consideró y utilizó una modificación de la ecuación propuesta por Biswal-Bozorgmehr. Estos modelos fueron evaluados por medio del coeficiente de regresión lineal, suma de errores cuadrados, raíz media de los errores cuadrados y Chi-cuadrado. Al comparar los valores experimentales con los calculados, se demostró que el modelo Biswal-Bozorgmehr modificado obtuvo mejor ajuste sobre la variación de masa de agua y sólidos solubles. Mediante la ecuación de Arrhenius se analizó el efecto de la temperatura sobre los parámetros cinéticos (Kw y Kss y difusividad efectiva de agua (Dwe y sólidos solubles (Dsse. De acuerdo al diseño factorial, se observó que la temperatura no influyó sobre la difusividad efectiva de agua y de sólidos, pero sí la concentración de la solución osmótica. La mejor condición de salida de agua y ganancia de sólidos solubles durante la deshidratación osmótica de la papaya chilena fue a 30 °C con una concentración del 60%.O objetivo deste trabalho foi estudar a cinética de desidratação osmótica do mamão chileno (Vasconcellea pubescens utilizando duas variáveis experimentais: temperatura (30, 40 e 50 °C e concentração (40, 50 e 60% da solução osmótica. Para este estudo, determinou-se a variação de massa total, de massa de água, de massa de sólidos solúveis, modeladas com as equações difusionais. Nesta investigação, também se considera e se usa uma modificação da equação proposta por Biswal-Bozorgmehr. Estes modelos foram avaliados através do coeficiente de regress

  18. Influence of frequency variation in the load behaviour in electric power systems; Influencia da variacao da frequencia no comportamento da carga dos sistemas eletricos de potencia

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira Sobrinho, Mauro de

    1994-11-01

    This work presents several models for the representation of load-frequency control systems and describes the main characteristics of the load. The composition of the load is described in details, divided by sectors. Finally, simulations of the load-frequency control system is performed. Conclusions are presented.

  19. Tolerancia al daño inducido bajo solicitaciones de contacto cíclicas en carburos cementados WC-Co//Tolerance induced damage under cyclic contact loading of WC-Co cemented carbides

    OpenAIRE

    David Coureaux‐Mustelier; Anna Ingebrand; Alexey Goéz‐Úsuga; Luís Miguel Llanes‐Pitarch

    2014-01-01

    El comportamiento mecánico de los carburos cementados WC-Co ha sido estudiado en detalle teniendo en cuenta los defectos preexistentes del material (daño intrínseco). Sin embargo, la información sobre los efectos del daño inducido en servicio (daño extrínseco) en la integridad estructural de estos materiales esescasa. En este contexto, en este trabajo se evalúa la influencia del daño extrínseco en la resistencia mecánica residual de dos calidades con microestructuras diferentes. Para ello, se...

  20. Contribuição da vegetação rasteira na evapotranspiração total em diferentes ecossistemas do bioma cerrado, Distrito Federal.

    OpenAIRE

    Otacílio Antunes Santana; Geraldine Cuniat; José Imaña-Encinas

    2010-01-01

    Os objetivos deste trabalho foram: (a) quantificar sazonalmente a evapotranspiração da vegetação rasteira (ET rasteira), (b) quantificar a influencia da ET rasteira para a evapotranspiração total (ET total), e (c) relacionar a ET rasteira com o índice de área foliar da vegetação rasteira (IAF rasteira), abertura de dossel e potencial hídrico do solo; em quatro diferentes paisagens: Cerrado stricu sensu, Mata de Galeria, pastagem e reflorestamento, situados na APA Gama-Cabeça de Veado, Distrit...

  1. Influencia de las inteligencias m??ltiples en el rendimiento deportivo en futbol

    OpenAIRE

    Pino Medina, Jos?? Mar??a del

    2012-01-01

    En la presente investigaci??n analizamos la relaci??n entre inteligencia y determinadas capacidades cognitivas, con las variables asociadas al rendimiento deportivo en f??tbol, planteando esta investigaci??n bajo los pilares que ofrece La Teor??a de las Inteligencias M??ltiples de Howard Gardner. Como objetivos fundamentales se pretende clarificar la relaci??n entre inteligencia y rendimiento deportivo, as?? como analizar la influencia de determinadas variables cognitivas en futbolistas, a tr...

  2. Influencia de la fotografía en la literatura española y latinoamericana

    OpenAIRE

    Ansón, Antonio

    2010-01-01

    Research on the influence of photography in Spanish literature from the late nineteenth century onwards. The study focuses on works of fiction by Spanish and Latin American writers.

    Investigación sobre la influencia de la fotografía en la literatura en español desde finales del siglo XIX hasta nuestros días. El estudio se centra en obras de narrativa de autores españoles y latinoamericanos.

  3. Influencia de los tiempos de respuesta prehospitalarios en la supervivencia de los pacientes politraumatizados en Navarra

    OpenAIRE

    B. Ali Ali; M. Fortún Moral; T. Belzunegui Otano; R. Teijeira Álvarez; D. Reyero Díez; A. Cabodevilla Górriz

    2015-01-01

    La relación entre los tiempos de respuesta y la mortalidad de los pacientes politraumatizados en la denominada "hora de oro" sigue siendo tema de debate. El objetivo del presente estudio es determinar las variables relacionadas con la mortalidad en dichos pacientes y la influencia de los tiempos de respuesta de los Servicios Médicos de Emergencia en dicha mortalidad. Para ello se analizaron los datos del Registro "Major Trauma de Navarra" (cohorte retrospectiva de pacientes politraumatizados ...

  4. Características reproductivas de la cerda. Influencia de algunos factores ambientales y nutricionales

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    Dr Mv Maritza Fuentes Cintra

    2006-01-01

    Full Text Available El desarrollo alcanzado en las ciencias biológicas y el nivel del progreso tecnológico, determinan en buena medida la eficiencia con que el país puede producir alimentos de origen animal para satisfacer las necesidades de proteína de la población. Es necesario destacar la situación que existe en decenas de países y en general en el mundo donde la crisis nutricional es extremadamente grave, el déficit de proteína de origen animal se pasea por el mundo subdesarrollado unido al crecimiento demográfico. La FAO estima que 150 millones de seres humanos se agregarán en los próximos diez años a los que padecen de hambre y desnutrición. Las necesidades de carne se incrementan en función de la alimentación del hombre. Cada minuto en el llamado tercer mundo nacen 100 niños de los cuales no menos de 20 morirán antes de cumplir el año de vida, de los otros 80 la mitad será víctima de la desnutrición y el hambre. Estas condiciones resultan básicas para la intensificación de la producción de carne de cerdo. Según Figueroa y Ly (1990 el cerdo está llamado a desempeñar el papel protagónico en la producción de carne en el trópico al igual que en el mundo de clima templado. Una cerda puede producir en un año entre 1,5 y 2,0 toneladas de carne en pie, mientras una vaca en el mismo plazo de tiempo solamente produce un ternero de 30-36 Kg de peso vivo. La carne porcina es la de mayor producción mundial alcanzando el 40 % del total de las carnes rojas. Presentando el cerdo ventajas indiscutibles que permiten estimular su producción como son: consumo de gran cantidad de alimentos tanto líquidos como voluminosos, se adapta a cualquier sistema de explotación e instalaciones, es un animal altamente prolífero, da respuesta rápida a la producción de carne y una gran cantidad de derivados (Figueroa, 1990, por lo que nuestro país tiene ambiciosos planes con vistas al desarrollo del porcino, como fuente de proteína de origen animal y

  5. Empresas integradoras de México: Influencias europeas

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    Carlos Rodríguez Monroy

    2008-01-01

    Full Text Available La apertura comercial de México que se da en los 90's, hizo que el país abandonara un sistema comercial endógeno fuertemente controlado y protegido, tomando como ejemplo la experiencia de otros países. El gobierno promovió nuevas formas de asociación productiva, entre ellas, la 'Empresa Integradora'. El trabajo plantea un análisis de la figura 'Empresas Integradoras', a través del derecho comparado, examinando figuras asociativas europeas similares. La investigación fundamenta su análisis en la revisión y estudio de la literatura referida al tema, obteniendo una visión más amplia del marco jurídico en el que se desarrolla la figura asociativa de la Empresa Integradora, en México. Los resultados indican que la Empresa Integradora mexicana es una figura inspirada en el asociacionismo europeo, pero desafortunadamente carece de un programa fiscal propio a diferencia de sus homólogas europeas, además de presentar inconsistencias en sus conceptos, generando confusión en su comprensión. Visto lo anterior, es así como podemos conocer otras realidades similares a la mexicana, estableciendo ciertos paralelismos jurídicos que ayuden a entender y mejorar la producción propia.

  6. TRANSFERENCIA DEL OBJETO LITIGIOSO: INFLUENCIA EN EL PROCESO

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    Luis Enrique Arias Londoño

    2011-01-01

    Full Text Available Uno de los grandes institutos al cual se acude tanto de manera extrajudicial como procesal por quienes son titulares de un derecho real o personal es la llamada CESIÓN del OBJETO LITIGIOSO, sobre el cual afloran gran variedad de ideas preliminares, que toman como fuente el Derecho sustancial civil desde el ámbito propio del libro de bienes como el de las obligaciones en general, retomando para ello las nociones del derecho subjetivo y pasar a entroncarse en el mundo del proceso, cuando en este escenario se da tal transferencia lo que exige distinguir entre la cesión de la cosa o el derecho controvertido. Ciertamente que el asunto merece reparo entre los efectos procesales que devienen de la presentación de toda demanda para asegurar el prístino sentido de la expresión “EL ADQUIRENTE A CUALQUIER TÍTULO DE LA COSA O DEL DERECHO LITIGIOSO…”, dentro del cual aquél puede intervenir como litisconsorte del “anterior titular” comoideas acabadas en el artículo 60 del Código de Procedimiento Civil.

  7. PERCEPÇÃO DA INFLUÊNCIA DA GESTÃO ESTRATÉGICA DE PESSOAS NO COMPROMETIMENTO ORGANIZACIONAL

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    Vera Lúcia da Silva Ventura

    2014-12-01

    Full Text Available Este artigo apresenta os resultados de uma pesquisa realizada em uma Instituição de Ensino Superior. O objetivo foi investigar as percepções de docentes do ensino superior acerca da influência da gestão estratégica de pessoas no comprometimento organizacional. O estudo foi delineado pela pesquisa qualitativa e pelo método fenomenológico, com utilização da estratégia de pesquisa de estudo de caso único. Como estratégias de coleta de dados realizaram-se entrevistas, observação participante e pesquisa documental por meio de roteiros semi-estruturados. Esses dados foram tratados pelos procedimentos de análise de conteúdo e análise documental.  Os resultados indicaram que, pela percepção dos entrevistados, a gestão estratégica de pessoas influencia o comprometimento dos docentes com a instituição e com a sua missão profissional como professores. Verificou-se que os docentes da graduação percebem essa influência com ênfase no comprometimento afetivo, enquanto que os docentes da pós-graduação demonstram a percepção dessa influência, com maior relevância, no comprometimento normativo.

  8. Influência da clonidina por via venosa no custo de anestesia com sevoflurano em cirurgias de ouvido médio em regime ambulatorial Influencia de la clonidina por vía venosa en el costeo de anestesia con sevoflurano en cirugías de oído medio en régimen ambulatorial Influence of intravenous clonidine in the cost of sevoflurane anesthesia for outpatient middle ear procedures

    Directory of Open Access Journals (Sweden)

    Renato Mestriner Stocche

    2004-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A clonidina é um agente a2-agonista que diminui o consumo de anestésicos venosos e inalatórios. Este estudo visou avaliar a relação custo-benefício da medicação pré-anestésica com clonidina por via venosa em anestesia geral com sevoflurano em regime ambulatorial. MÉTODO: Trata-se de estudo encoberto, aleatório, controlado com placebo, realizado com pacientes com idade entre 15 e 52 anos. Os pacientes foram divididos em 3 grupos de 15: Grupo S (placebo, Grupo C3 (clonidina 3 µg.kg-1 e Grupo C5 (5 µg.kg-1. A indução anestésica foi feita com sevoflurano, alfentanil (30 µg.kg-1 e pancurônio (0,08 mg.kg-1. Foram anotados a freqüência de complicações, consumo de halogenados, tempo de anestesia, tempo de recuperação fase I e II. A análise de custos considerou gastos diretos e indiretos. RESULTADOS: Não houve diferenças entre os grupos em relação aos dados demográficos, freqüência de complicações e tempo para recuperação anestésica fase I. A recuperação anestésica fase II foi prolongada no grupo C5 (p JUSTIFICATIVA Y OBJETIVOS: La clonidina es un agente a2-agonista que diminuye el consumo de anestésicos venosos e inhalatorios. Este estudio visó evaluar la relación costeo-beneficio de la medicación pre-anestésica con clonidina por vía venosa en anestesia general con sevoflurano en régimen ambulatorial. MÉTODO: Se trata de estudio encubierto, aleatorio, controlado con placebo, realizado con pacientes con edad entre 15 y 52 años. Los pacientes fueron divididos en 3 grupos de 15: Grupo S (placebo, C3 (clonidina 3 µg.kg-1 y C5 (5 µg.kg-1. La inducción anestésica fue hecha con sevoflurano, alfentanil (30 µg.kg-1 y pancuronio (0,08 mg.kg-1. Fueron anotados la frecuencia de complicaciones, consumo de halogenados, tiempo de anestesia, tiempo de recuperación parte I y II. El análisis de gastos consideró gastos directos e indirectos. RESULTADOS: No hubo diferencias entre los

  9. Period, subculture number and culture color influence on the isolated Magnaporthe oryzae sporulation at the Tocantins State Influencia de la edad, número de repicagens y coloración de lo micelio en la esporulación del aislados de Magnaporthe oryzae, causante de lo añublo del arroz en el estado de Tocantins Influência da idade, número de repicagens e coloração dos micélios na esporulação de isolados de Magnaporthe oryzae, causador da brusone em arroz no estado do Tocantins

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    Ildon Rodrigues Nascimento

    2011-09-01

    Full Text Available

    O fungo Magnaporthe oryzae, causador da brusone do arroz, apresenta uma série de limitações de cultivo em condições controladas. Algumas características podem ser variáveis até para um mesmo isolado e exigem adaptações ou inovações dos pesquisadores para possibilitar o desenvolvimento de ensaios. Este trabalho teve o objetivo verificar, de isolados monospóricos de M. oryzae da raça IA-1 coletados no Projeto Rio Formoso, município de Formoso do Araguaia, a durabilidade das culturas armazenadas em laboratório, a quantidade máxima de repicagens para manter a produção satisfatória de conídios pelas colônias e a relação de diferentes colorações das culturas em meio BDA com a produção de conídios. Para tanto, realizou-se três ensaios em delineamento inteiramente casualizado. No Ensaio I, utilizaram-se culturas com 10, 14, 18, 22, 26 e 30 dias após a repicagem. No Ensaio II, utilizaram-se culturas com 0, 1, 2, 3 e 4 repicagens a partir da cultura original. No Ensaio III, classificaram-se as culturas como Negra, Centro cinza com largas bordas brancas, Cinza, Centro cinza com estreitas bordas brancas e Branca. Maiores esporulações de M. oryzae foram obtidas em culturas com 14 dias após a repicagem, na segunda repicagem e de coloração negra.

    The fungus Magnaporthe oryzae, that caused the blast rice disease, present several restrictions for cultivation under laboratory conditions. Any characters can be variable even for the same isolate and need adaptations or innovations of the researchers for experimental development. This work aimed to verify the M. oryzae monosporic isolates of the IA-1 race collected at Projeto Rio Formoso, Formoso do Araguaia Municipality, the period of the cultures stored under laboratory conditions, the maximum quantity of the subcultures to keep the production of the conidia for the colonies satisfactory and

  10. Estudio de la influencia de los parámetros de mecanizado del corte por chorro de agua en la profundidad de corte obtenida en piedra

    OpenAIRE

    Ramos Moreno, Diego

    2016-01-01

    Estudio de la influencia de los parámetros del proceso de corte por chorro de agua en la profundidad de corte que se obtiene, además del estudio de la influencia de la sumersión del chorro en el resultado obtenido.

  11. Efectividad de los patrones de influencia análisis de la relación superior-subordinado en el ámbito organizacional

    OpenAIRE

    Martínez Corts, Inés (Coordinador)

    2003-01-01

    Yukl, Falbe y Youn (1993), Falbe y Yukl (1992) y Kipnis y Schmidt (1988) muestran que, en un proceso de influencia, los individuos se orientan hacia el empleo de más de una táctica de influencia. De hecho, algunos estudios sugieren combinaciones de hasta

  12. La polémica influencia de Adolfo Posada en el pensamiento de los catedráticos de derecho de la generación del 900

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    Raquel García Bouzas

    2014-10-01

    Full Text Available Contenido: Las razones de la influencia de Posada entre los juristas rioplatenses. Un particular enfoque del krausismo. Receptividad y difusión de su pensamiento. Concepción organicista del estado. El sufragio como un deber.Valoración de su influencia en nuestra historia intelectual

  13. Influência de anestésicos locais sobre o bloqueio neuromuscular produzido pelo rocurônio: ação da lidocaína e da mistura enantiomérica em excesso de 50% de bupivacaína na junção neuromuscular Influencia de anestésicos locales sobre el bloqueo neuromuscular producido por el rocuronio: acción de la lidocaína y de la mezcla enantiomérica en exceso de 50% de bupivacaína en la junción neuromuscular Influence of local anesthetics on the neuromuscular blockade produced by rocuronium: effects of lidocaine and 50% enantiomeric excess bupivacaine on the neuromuscular junction

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    Angélica de Fátima de Assunção Braga

    2009-12-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Os efeitos dos anestésicos locais (AL na transmissão neuromuscular e sua influência no bloqueio neuromuscular produzido por bloqueadores neuromusculares competitivos são ainda alvo de pouca investigação. O objetivo do estudo foi avaliar in vitro os efeitos da lidocaína e da mistura enantiomérica em excesso de 50% de bupivacaína (S75-R25 no bloqueio neuromuscular produzido pelo rocurônio. MÉTODOS: Ratos foram distribuídos em cinco grupos (n = 5 de acordo com o fármaco estudado: lidocaína, bupivacaína (S75-R25, rocurônio, isoladamente (grupos I, II e III; rocurônio em preparações previamente expostas aos AL (grupos IV e V. As concentrações utilizadas foram: 20 µg.mL-1, 5 µg.mL-1 e 4 µg.mL¹ para lidocaína, bupivacaína (S75-R25 e rocurônio, respectivamente. Avaliaram-se: 1 a força de contração muscular do diafragma à estimulação elétrica indireta, antes e 60 minutos após a adição dos AL e do rocurônio isoladamente, e a associação AL-rocurônio; 2 os efeitos dos AL sobre o potencial de membrana (PM e potenciais de placa terminal em miniatura (PPTM. Em preparação biventer cérvicis de pintainho, foi avaliado o efeito do AL na resposta contraturante à acetilcolina. RESULTADOS: A lidocaína e a bupivacaína (S75-R25 isoladamente não alteraram as respostas musculares e os valores do PM. Nas preparações expostas aos AL, o bloqueio pelo rocurônio foi significativamente maior em relação ao produzido pelo rocurônio isoladamente. Em preparação biventer cervicis de pintainho, a lidocaína e a bupivacaína (S75-R25 diminuíram a resposta de contração à acetilcolina. A lidocaína aumentou a frequência dos PPTM, seguido de bloqueio; a bupivacaína (S75-R25 produziu diminuição seguida de bloqueio. CONCLUSÕES: Os anestésicos locais potencializaram o bloqueio neuromuscular causado pelo rocurônio. Os resultados mostraram ação pré-sináptica e póssináptica.JUSTIFICATIVA Y

  14. Influencia del tamaño del cristal de cinc de láminas de acero galvanizadas en ambientes que contienen cloruros y sulfatos

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    Julieth Andrea Ramírez-Jerez

    2015-05-01

    Full Text Available El trabajo evaluó la influencia del tamaño del cristal de cinc en el comportamiento electroquímico de láminas de acero galvanizadas por inmersión en caliente. Los ensayos se realizaron en una celda electroquímica plana en soluciones con diferentes concentraciones de NaCl y NaSO4. La velocidad y el mecanismo de corrosión, así como las características resistivas y difusivas de las láminas se evaluaron mediante técnicas electroquímicas, como espectroscopia de impedancia electroquímica (EIS, resistencia a la polarización (Rp y curvas potenciodinámicas. La composición y distribución de los productos de corrosión (FeO y algunos compuestos de cinc y el daño superficial causado por estos se determinaron por medio de DRX y SEM-EDS. Los resultados mostraron que la degradación de la capa de óxidos formada se ve afectada por la presencia de cloruros que penetran, llegan a la superficie del metal base y generan corrosión localizada.

  15. Influencia del Pseudo Dionisio en Nicolás de Cusa

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    Andrés Hubert R

    2007-01-01

    Full Text Available Nicolás de Cusa (1401-1464 reconoce la influencia del Pseudo Dionisio en su propio pensamiento, especialmente en su teología negativa. Este trabajo busca mostrar esta influencia en el libro referencia del Cusano: el De Docta Ignorantia (la Docta Ignorancia. Esta obra consta de 3 partes. Solo en la primera parte, Nicolás sigue de cerca las ideas del Pseudo Dionisio y solo en ella lo cita. En las demás, aunque se nota la influencia, nuestro autor se siente más libre: las fundaciones están firmes, el constructor puede construir libremente. Para probar esta tesis, se toman dos ejemplos: el tema de las tinieblas y la coincidencia de los opuestos. Este ejercicio permite conocer cómo y por qué se recibió al Pseudo Dionisio en la historia de la teología. Permite también profundizar el sentido de la teología de Nicolás de CusaThe reflections of Nicolas of Cusa (1401-1464 recognise the influence of Pseudo Dyonisius, particularly in his negative theology. The present study shows this influence on Nicolas' most important book: the De Docta Ignorantia (the Learned Ignorance. The book is divided into three parts and it is in the first part that Nicolas directly pursues the ideas of Pseudo Dyonisius and it is only here that he quotes them. In the other parts of the book although the influence is noted, the foundations have been set and are solid and the author or builder can construct with freedom. To prove this thesis, 2 examples are presented: the theme of darkness and the coincidence of opposites. This exercise shows how and why Pseudo Dyonisius has been accepted into the history of the theology. It also deepens the meaning of the Nicolas of Cusa's theology

  16. La influencia de Gregorio Magno en Alberto Magno: Super Dionysii Mysticam Theologiam et Epistulas

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    Anneliese Meis

    2010-01-01

    Full Text Available Si bien la influencia de Gregorio Magno fue decisiva para la historia del pensamiento teológico práctico en la Edad Media, siendo Gregorio el autor más citado en la STh de Tomás de Aquino después de Agustín, su influencia sobre Alberto Magno no ha sido estudiada recientemente. En efecto, Alberto Magno orienta su Comentario al Corpus Dionisiacum de la misma manera que Gregorio por la revelación de este misterio, que busca entender racionalmente. El estudio se detiene en las citas tomadas por el Doctor Universalis de los Moralia en SMT II, la Ep I, la Ep V y la Ep IX, para descubrir cuál es, concretamente, la influencia de Gregorio Magno sobre Alberto Magno en la intelección del problema razón y revelación.Although the influence of Gregory Magnus was crucial for the history of practical theological thought in the Middle Ages -being the most cited author in Thomas Aquinas' STh after Augustine- his influence over Albertus Magnus has not been studied recently. In effect, Albertus Magnus's Commentary on Corpus Di-onysiacum is guided, in the same way as Gregory, by the revelation of this mystery, which he seeks to understand rationally. This study focuses on the citations from the Moralia that Doctor Universalis uses in SMT II (Super Mysticam Theologiam Dionysii, the Ep. I, the Ep.V and the Ep. IX, in an effort to concretely discover what Gregory Magnus' influence was over Albertus Magnus in his understanding of the problem of reason and revelation.

  17. Influencia del clima en las parasitosis de la ganadería del nordeste argentino

    OpenAIRE

    Lombardero, Oscar J.

    1989-01-01

    Para poder interpretar en toda su complejidad el parasitismo animal, deben tenerse presente, a lo largo de la presente exposición de ideas tres conceptos fundamentales. El primer concepto es que los parásitos evolucionaron a partir de formas de vida libre. El segundo que las formas de vida libre están expuestas a la influencia del medio externo, como agentes climáticos, el frío y el calor, la desecación, los vientos, heladas, etc. El tercero es que los parásitos encuentran en los hué...

  18. La influencia de las primeras psicólogas norteamericanas en la historia de la psicologia

    OpenAIRE

    Sos Peña, Rosa

    2015-01-01

    En este trabajo analizamos el impacto de las primeras psicólogas norteamericanas con el objetivo de estudiar su influencia en la psicología del siglo XX y recuperar su obra. Para ello, del libro American Men of Science, de Cattell, de 1906, hemos seleccionado ocho pioneras mujeres psicólogas. Y valiéndonos de una metodología bibliométrica hemos examinado la información del Social Sciences Citation Index, (SSCI), desde 1900 hasta 1999. Los resultados indican que ellas han recibi...

  19. Influencia del razonamiento matemático en la estructuras multiplicativas

    OpenAIRE

    López Betancourt, Rosembert

    2015-01-01

    Se abordó la comprensión del razonamiento matemático y su influencia en el aprendizaje de las matemáticas en los estudiantes de grado cuarto de la Institución Educativa Semilla de la Esperanza, sede Vasco Núñez de Balboa del municipio de Palmira, en el marco de las estructuras multiplicativas. Se identificó los desempeños propios del razonamiento, favoreciendo el desarrollo de este pensamiento como una competencia en matemáticas. Se inició aplicando una prueba diagnóstica que fue evaluada en ...

  20. INFLUENCIA DEL PROCESADO EN EL VALOR NUTRITIVO Y FUNCIONAL DE LA UVA BLANCA

    OpenAIRE

    CARRANZA CONCHA, JOSÉ

    2010-01-01

    La estrecha asociación entre el consumo de frutas y la salud deriva de la presencia en éstas de una serie de sustancias nutritivas y otras no nutritivas pero con un papel clave en la prevención de determinadas enfermedades. Sin embargo, su procesado y almacenamiento afecta a estos compuestos, por lo que resulta interesante considerar este efecto a la hora de seleccionar tratamientos. El objetivo planteado en esta Tesis ha sido el estudio de la influencia de las condiciones de procesado y alma...

  1. Culpabilidad sexual en jóvenes: influencia de las actitudes y la experiencia sexual

    OpenAIRE

    Juan Carlos Sierra; Felipe Perla; Pablo Santos-Iglesias

    2011-01-01

    La culpabilidad sexual es un factor determinante de la conducta sexual. El objetivo del presente estudio fue analizar la culpabilidad sexual en una muestra de 594 jóvenes salvadoreños con edades comprendidas entre 14 y 18 años, seleccionados mediante un procedimiento no aleatorio, con el propósito de determinar la influencia que sobre la misma tienen una serie de variables sociodemográficas y de actitudes hacia la sexualidad. Los participantes contestaron el Inventario de Culpabilidad Sexual ...

  2. De la influencia al poder: elementos para una mirada foucaultiana al Liderazgo

    OpenAIRE

    Juan Javier Saavedra Mayorga; Mauricio Sanabria; Ali Smida

    2013-01-01

    El artículo tiene como objetivo contribuir a la construcción de una mirada crítica al liderazgo. Examina la posibilidad de estudiar el problema central del liderazgo, el de la influencia, desde un punto de vista más amplio, el de las relaciones de poder entre los individuos, y en particular desde la teoría del poder de Michel Foucault. El artículo hace una revisión de la obra de Michel Foucault y de su utilización por parte de los estudios organizacionales, y propone la tesis según la cua...

  3. Influencia de pesticidas en las poblaciones de Colémbolos

    OpenAIRE

    Durán Vicente, Alberto M.

    2013-01-01

    El efecto de los insecticidas en las poblaciones de Colémbolos fue investigado en una finca de frutales en la localidad de Nitra (Eslovaquia). El estudio se hizo en dos parcelas, una en la que se aplicaron insecticidas de manera esporádica y controlada, y la otra, en la cual no se habian utilizado pesticidas desde hacía años. Los tratamientos fueron establecidos para investigar la influencia de los insectos presentes sobre y bajo la capa superficial del suelo, en la sucesión vegetal. Lo...

  4. Influencia de la práctica del método pilates sobre la sarcopenia

    OpenAIRE

    Fernández Roldán, K.; Benítez Jiménez, A.

    2013-01-01

    Algunos beneficios del método pilates, como la mejora de parámetros relacionados con la marcha o el equilibrio (Newell et al., 2012) han sido demostrados. Por otro lado, la literatura existente (Waters et al., 2010; Vogel et al., 2009; Sundell, 2011; Mayer et al., 2011) ha mostrado que la práctica de ejercicio reduce los efectos de la sarcopenia. Por ello, este estudio pretende valorar la influencia de la práctica de pilates sobre la sarcopenia en personas mayores. La muestra estuvo formada p...

  5. La centralidad en las comunicaciones y la influencia percibida en los pequeños grupos

    OpenAIRE

    Nancy Noemi Terroni

    2003-01-01

    Este trabajo reporta los resultados de medidas del análisis de redes en la comunicación de pequeños grupos que resuelven una tarea de recuperación de memoria y su asociación con la influencia percibida. El reactivo empleado es una historia y los 65 participantes, alumnos de la Universidad Nacional de Mar del Plata, debieron reconstruir la misma primero en forma individual, luego grupal colaborativa y nuevamente en forma individual. Se registraron las interacciones grupales con comunicación ca...

  6. Las organizaciones contemporáneas tipo mp3 y su influencia cultural

    Directory of Open Access Journals (Sweden)

    Hugo Macías Cardona

    2011-06-01

    Full Text Available En este artículo se hace una reflexión sobre la influencia cultural de organizaciones contemporáneas con estructuras des-jerarquizadas y procesos internos no secuenciales, que el profesor Richard Sennet ha llamado organizaciones MP3. A partir de las estructuras organizacionales descritas por Álvaro Zapata, la distinción entre trabajo y labor de Hannah Arendt, los mecanismos de vigilancia foucaultianos y una contextualización en Colombia, se analiza la baja lealtad institucional, la disminución de la confianza informal entre quienes laboran y el debilitamiento del conocimiento institucional.

  7. Influencia del liderazgo, estrategia y entorno en la competitividad empresarial de la pyme ecuatoriana

    OpenAIRE

    Uzcátegui, Carolina; Solano, Javier

    2015-01-01

    La determinación e identificación de los factores que posibilitan a las empresas un nivel competitivo, suscita gran interés entre los gestores de empresas necesariamente ligado a la necesidad de supervivencia en la pyme, que en la mayoría de ocasiones se ve frenado por la limitación de recursos del que dispone para llevar a cabo un análisis competitivo profundo. El presente estudio tiene como fin, dar luz sobre este tema; para lo cual se identifica la influencia de determinados factores, como...

  8. Influencia del consumo de sustancias psicoactivas en los patrones de comportamiento violento

    OpenAIRE

    Juárez Acosta, Fernando; Universidad de San Buenaventura; Galindo Sandoval, Bertha Cecilia; Universidad Pedagógica y Tecnológica de Colombia-Tunja; Santos Gamboa, Yaneth; Universidad Pedagógica y Tecnológica de Colombia-Tunja

    2013-01-01

    Se analizó la influencia del consumo de sustancias psicoactivas en los patrones de comportamiento violento en 373 participantes, para lo cual se utilizaron diversos cuestionarios, hallándose que la droga de inicio más frecuente y de mayor impacto fue el alcohol, a la que siguieron el tabaco y la marihuana, obteniéndose cuatro grupos según la severidad del consumo. Se obtuvieron tres patrones de comportamiento violento, ordenados por frecuencia, rachas y estabilidad de la conducta agresiva. La...

  9. INFLUENCIA DE LOS ESTILOS EDUCATIVOS PARENTALES EN UN CENTRO DE EDUCACIÓN INFANTIL

    OpenAIRE

    Ruiz-Suánez, Esteban

    2013-01-01

    Mediante el presente trabajo se pretende realizar una propuesta de intervención en un centro de educación infantil de primer ciclo en Valencia, durante el curso escolar 2012-2013. Desarrollar una escuela de padres bajo el tema de los estilos educativos parentales y su influencia en el desarrollo afectivo de los hijos. Tras realizar una revisión teórica de los conceptos que se consideran más influyentes en el desarrollo social y afectivo de los niños en la primera infancia, se analizan los ...

  10. Espacios y ambientes comerciales. La influencia del contexto en la eficacia comunicativa

    OpenAIRE

    Martínez Sánchez, Mª Eugenia

    2015-01-01

    El ambiente que rodea a un consumidor cuando se encuentra en un establecimiento comercial puede provocar efectos sobre él que deriven en una conducta y comportamiento favorable o desfavorable ante los procesos comunicativos que se producen en él. La investigación surgió de la necesidad de averiguar la capacidad de influencia que poseen los componentes del contexto espacial (color de la pared, iluminación, música, etc.) que rodean al sujeto; es decir, conocer cómo intervienen éstos en el ámbit...

  11. Influencia de la Ley del Mínimo Esfuerzo en el consumo de productos sanitarios

    OpenAIRE

    Torres Quintana, Antonio

    2015-01-01

    INTRODUCCIÓN: La Ley del Mínimo Esfuerzo (LME), puede explicar la influencia de la accesibilidad y la distancia en el consumo de productos sanitarios, dichos conceptos han sido esenciales en este trabajo. El objetivo del estudio es determinar si la distancia que deben recorrer las Enfermeras para acceder a tres productos sanitarios (gasas, apósitos y sueros fisiológicos de 10cc) y la lateralidad en su colocación influyen en la cantidad consumida en el Gabinete de Hemodiálisis de Fundació P...

  12. Influencia del material P.O.P. en el comprador de la tienda de barrio

    OpenAIRE

    López Hernández, Juan Camilo; González Jaramillo, Luis Felipe

    2015-01-01

    La relevancia de las tiendas de barrio como el canal más antiguo y de mayores ventas de la economía colombiana (Nielsen Colombia, 2014) ha llevado en gran medida a que los fabricantes de consumo masivo deseen ocupar un papel cada vez más importante y protagónico en dichos puntos de venta -- El presente estudio busca analizar la influencia del material pop en la decisión de compra de los compradores de las tiendas de barrio de la ciudad de Medellín con énfasis en la categoría de bebidas de té ...

  13. La influencia del Aspecto en la eficiencia del mensaje gráfico publicitario

    OpenAIRE

    Martínez Bouza, José Manuel

    2010-01-01

    La investigación se centra en cómo mejorar la eficiencia del mensaje gráfico publicitario desde la perspectiva formal del diseño y concreta la variación de la preferencia del receptor ante los cambios en los estímulos visuales provocados por los cambios de Aspecto del mensaje gráfico publicitario, así como la importancia del aspecto en el rendimiento comunicativo. El trabajo se orienta hacia el estudio de la influencia del Aspecto en la eficiencia del diseño gráfico aplicado a un sector en al...

  14. INFLUENCIA DEL TEMPO DE LA MÚSICA EN LAS EMOCIONES

    OpenAIRE

    Jonathan Azael Caballero-Meneses; Marina Menez

    2010-01-01

    Se sabe que la música puede influir en dos componentes de las emociones: el arousal y la valencia. En particular, se ha reportado que el tempo o rapidez de la música está directamente relacionado con el arousal, aunque su relación con la valencia o medida de afecto no es aún clara. En este trabajo se analizó la influencia del tempo en ambos componentes mediante la exposición de 24 estudiantes de licenciatura a treinta extractos musicales de distinto tempo. Además se evaluó la posible modulac...

  15. INFLUENCIA DE LA INGENIERÍA EN EL DESARROLLO COMERCIAL DE LA HUMANIDAD: EDAD MODERNA

    Directory of Open Access Journals (Sweden)

    ANA MARÍA SARAVIA

    2011-12-01

    Full Text Available Básicamente, el comercio es el intercambio de mercancías, de servicios o de ambos. Pero de la misma manera, para poder desarrollar el comercio, se necesita de la ayuda y el desarrollo de áreas específicas como las que brinda la ingeniería. En este trabajo se hace una descripción de la influencia de la ingeniería en el desarrollo del comercio mundial en la Edad Moderna.

  16. ´Rilke en Rosales: una influencia crucial entre 1940 y 1951

    OpenAIRE

    Montetes Mairal, Noemí

    2009-01-01

    En este artículo se demuestra hasta qué punto la influencia de Rainer Maria Rilke (Praga, 1875 - Valmont, Suiza, 1926) resulta crucial en la obra poética de Luis Rosales (Granada, 1910 - Madrid, 1992), especialmente en el periodo de gestación de sus obras mayores: La casa encendida, Rimas y El contenido del corazón (1940-1951) e incluso después, ya que hay una serie de temas y motivos obsesivamente recurrentes en ambos: la imagen de la madre como consuelo y protectora; la mitificación d...

  17. Influencia del acolchado biodegradable en la producción de pimiento

    OpenAIRE

    Lahoz, I.; Macua, J.I.; Cirujeda Ranzenberger, Alicia; Aibar Lete, Joaquín; Marí León, Ana Isabel; Pardo Sanclemente, Gabriel; Suso, M.; Pardo, A.; Moreno, M.M.; Moreno, C.; Mancebo, I.; Meco, R.

    2014-01-01

    El objetivo de este trabajo es analizar el comportamiento de diferentes materiales para acolchado en comparación con el polietileno, determinando su influencia en el rendimiento de un cultivo de pimiento al aire libre. Los ensayos se realizaron durante la campaña 2012 en Montañana (Zaragoza), Agoncillo (La Rioja), Cadreita (Navarra) y Ciudad Real. Se han estudiado seis materiales biodegradables, cuatro de ellos biopolímeros (Mater-Bi®, Sphere 4, Sphere 6 y Sphere 7) y dos pa...

  18. Influencia de Gregorio de Nisa sobre Juan Escoto Eriúgena: Aproximación a partir del Periphyseon

    OpenAIRE

    José Antonio Pachas

    2004-01-01

    A partir de los cinco libros del Periphyseon el autor intenta un acercamiento entre el pensamiento de Juan Escoto Eriúgena y Gregorio de Nisa, buscando sobre todo las principales influencias del segundo sobre el primero. Encuentra una plataforma de amplia base común entre ambos pensadores, marcada principalmente por un tipo de pensamiento circular según el esquema: procesión y retorno. Sin embargo, es notoria la influencia del Niseno sobre el Carolingio, principalmente cuando se trata de plan...

  19. Influencia de factores socioculturales en mujeres jóvenes y sus padres en los trastornos del comportamiento alimentario

    OpenAIRE

    Ruiz Martínez, Ana Oliva; Universidad Nacional Autónoma de México; Vázquez Arévalo, Rosalía; Universidad Nacional Autónoma de México; Mancilla Díaz, Juan Manuel; Universidad Nacional Autónoma de México; Trujillo Chi Vacuán, Eva María; Comenzar de Nuevo, A.C.

    2013-01-01

    El propósito del presente estudio fue evaluar la relación entre las influencias socioculturales sobre la delgadez percibida por 103 mujeres jóvenes y por sus padres, y revisar si dicha influencia repercute en el riesgo de sufrir trastornos de la conducta alimentaria o sintomatología relacionada. De acuerdo al diagnóstico de las primeras, se conformaron tres grupos: con trastornos de la conducta alimentaria, con sintomatología y control. Los instrumentos aplicados fueron el EAT, BULIT, CIMEC y...

  20. Influencia de las revistas de impacto en el periodismo científico y en la ciencia actual

    OpenAIRE

    Elías Pérez, Carlos

    2002-01-01

    En este estudio se ha intentado detectar la influencia de las revistas de impacto en el periodismo científico y en la ciencia actual. Se analiza el caso español, pero las conclusiones pueden extenderse a otros países. Se pone de manifiesto la absoluta preponderancia de revistas como Nature y Science (revistas de las que procede el 45% de la información sobre ciencia que publican los diarios generalistas) y se analizan las influencias de las estrategias de comunicación mediática de los gabinet...

  1. Factores determinantes de las influencias familiares en el comportamiento de compra: Un enfoque desde la perspectiva del joven adulto

    OpenAIRE

    Bravo Gil, R.; Fraj Andrés, E.; Martínez Salinas, Eva

    2006-01-01

    En este trabajo se analiza el efecto de la comunicación familiar, el tipo de consumo público o privado, y el grado de experiencia del individuo sobre la naturaleza y los efectos de las influencias familiares. Para ello, y mediante una metodología de regresiones multivariantes, se plantean relaciones de causalidad entre dichos factores y las influencias familiares. Los resultados muestran, entre otros aspectos, que la participación del hijo en las compras en el hogar favorece la existencia de ...

  2. Riqueza e abundância de aves em três estágios sucessionais da floresta ombrófila densa submontana, Antonina, Paraná.

    OpenAIRE

    Boçon, Roberto

    2012-01-01

    Resumo: A exploração excessiva dos recursos naturais, em especial dos recursos florestais, resulta em perda e descarcaterização de hábitas e influencia negativamente populações animais. Seus efeitos sobre as populações de aves da região tropical, em especial da Floresta Atlântica, ainda são pouco conhecidos. Sendo assim, o presente trabalho teve como objetivo obter informações qualitativas e quantitativas de aves da Floresta Ombrófila Densa Submontana e avaliar o tempo de permanência nos pont...

  3. Influencia de la pérdida foliar sobre la cosecha en el cv. Gruesa, Musa acuminata Colla (AAA, cultivado bajo invernadero en las Islas Canarias

    Directory of Open Access Journals (Sweden)

    Juan Cabrera Cabrera

    2010-12-01

    Full Text Available El cultivo de la variedad de platanera Gruesa, selección local de Dwarf Cavendish, ha experimentado un importante aumento en los últimos años en las Islas Canarias, tanto al aire libre como bajo invernadero. La eliminación de hojas, tras la floración, es una práctica habitual en los cultivos bajo invernadero. Asimismo es frecuente la pérdida de hojas por el efecto de los vientos en los cultivos al aire libre. El objetivo de este trabajo es evaluar, mediante simulación de pérdida foliar por daños mecánicos, la influencia que tiene la disminución de superficie foliar sobre el llenado y cosecha de la fruta en dicho cultivar. Para ello, cuatro meses antes de la cosecha se efectuaron cinco niveles de defoliación: 0%, 25%, 50%, 75% y 100%. Se valoran dos métodos diferentes de defoliación, eliminación de limbo foliar y tronchado de hojas con posterior corte de éstas. Se analizan y presentan datos morfológicos, fenológicos y productivos, así como valoración de la metodología empleada en este trabajo para la simulación de daños. A partir de un 25% de defoliado, equivalente a 7.5 hojas funcionales por planta, se detectaron diferencias significativas con las plantas testigos.

  4. The influence of operational constraints in the production strategy definition; Influencia de restricoes operacionais na definicao da estrategia de producao

    Energy Technology Data Exchange (ETDEWEB)

    Magalhaes, Tasso C.B. de; Schiozer, Denis J. [Universidade Estadual de Campinas, SP (Brazil)

    2004-07-01

    Production strategies definition, applied to petroleum fields, must consider physical, operational and economic constraints. It is common to consider only the reservoir conditions on the optimization processes, simplifying, many times, the process by not taking into account the operational constraints due to production facilities. There are two main reasons: considering the operational constraints makes the process much complex and it is assumed that this simplification can affect the economic indicators but dos not affect significantly the optimization process (number e location of wells, for example). The capacity of a production unit can be limited by many constrains such as: maximum liquid rate, capacity of water and gas treatment, gas compression, water or gas injection, number of wells, etc. In this work, we show that these limitations have a direct influence in the oil production and consequently in the economic indicators and they can cause significant impact at production strategy definition, influencing the number of production and injection wells, their locations and their operational conditions. We presented an example of an offshore field with a limitation on the liquid rate. Production strategies were selected with and without constraints in order to observe the differences in the technical and economic indicators, such as NPV (Net Present Value), production and injection of fluids and the number and location of the production and injection wells. It was possible to observe yet that the amount and location of the wells were significantly affected by the restriction. (author)

  5. Toxicity assays applied for evaluation of ionizing radiation and zeolites adsorption as treatment technologies for coloured effluent; Aplicacao de ensaios de toxicidade na avaliacao da eficiencia da radiacao ionizante e da adsorcao em zeolitas para o tratamento de efluentes coloridos

    Energy Technology Data Exchange (ETDEWEB)

    Higa, Marcela Cantelli

    2008-07-01

    Textile industry is one raising commercial activity in Brazil. This activity has been generating important environmental interferences such as colour and bad biological effects into aquatic environment. Liquid textile effluents are toxic to lived organisms and may present low biological degradability. Although foreseen at federal regulation, the effluent quality is not controlled by toxicity assays in the country. These assays are carried out to determine the potential effects of chemical substances and effluents to cause negative effects to the exposed organisms. The present work aimed whole toxicity evaluation as well as the applicability of two different treatment techniques: ionizing radiation and zeolite adsorption. The efficacy of them were evaluated using eco toxicity bases and real effluents. Two different industries from Sao Paulo State contributed to this project supplying their real effluents. The samples were collected at a Textile Industry and at a Chemical Industry (dying producer) and after the measurement of whole toxicity the samples were submitted to treatments. Toxicity assays were carried out for Daphnia similis and for Vibrio fischeri. Sample irradiations were performed at an Electron Beam Accelerator at CTR/IPEN. Zeolites treatment is an P and D activity from CQMA/IPEN which contributed to this Project. Zeolites v/ere prepared from fly ash previously being used as an adsorber material. Both treatments (electron irradiation and zeolite adsorption) resulted on important toxicity and colour reduction. Concerning irradiation the effluents from chemical industry required higher radiation doses than that from textile activity. The radiation dose to be suggested is 40 kGy (toxicity reduction > 60%) for the chemical effluents and 0.5 kGy for the textile effluents (toxicity reduction > 90%). When zeolite adsorption was evaluated the Z1M6 resulted in 85%o v/hole toxicity reduction and ZC6 resulted in very low efficiency for the effluents of chemical industry. (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 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)

  8. Bacteriological evaluation of fresh chicken sausage submitted to gamma radiation; Avaliacao bacteriologica da linguica de frango Frescal submetida a radiacao gama

    Energy Technology Data Exchange (ETDEWEB)

    Borges, Alexandre

    2002-07-01

    Many developed countries have established a goal of self-sufficiency in food production, while many other obtain their principal foreign exchange through food exports. For these reasons, it is essential to eliminate losses in food products. It is no less important to prevent or combat food-transmitted diseases, principally across poultry and poultry derivatives, which play a major role in certain infections and is the focus of national public health goals in order to increase the international commerce. In tropical countries, perishable products represent the largest markets. The population lives in a constant battle against the deterioration of these foods. Such loss is enormous where the climate favors the proliferation of agents of decomposition and acceleration of putrification. Increasing the useful life of these perishable products will provide producers the option of commercializing them in low harvest season, thus achieving higher prices, and providing sensible growth to the agro-industrial market. Treatment of perishables with gamma radiation presently constitutes one of the most modern, safe, and efficient methods for increasing food preservation. The irradiation of foods can offer various special advantages such as: kill or sterilize pathogenic organisms in food, improving their quality and duration, reducing the level of toxics, slow or stop the aging of roots and tubers, disinfect products of animal and vegetable origin thus slowing their decomposition, increasing their shelf-life, and prolonging their conservation refrigeration. The practice of irradiating foods for the treatment of microorganisms has begun to gain momentum in Brazil, where roughly 25% of all food produced annually is lost to disease and insects activity, increased by lack of adequate storage treatments. Various countries have already adopted the method that, when practiced properly by qualified professionals, does not cause side effects other than the extension of useful life. In light of the lack of present data on the irradiation of fresh chicken sausage, the objective of this study is to evaluate determine the efficiency of this method as a process for reducing the microbial load via measurement of the bacteriology of the product before and after gamma radiation. 45 sample of chicken sausage(acquired directly from the poultry industry) were prepared divided in 3 treatments: the first is a control, the second and third using application of 1,5 and 3,0 kGy, respectively. The chicken sausages irradiated with a dose of 1,5 kGy did not have, statistically significant results apparent in the bacteriological measures. Samples irradiated with 3,0 kGy did experience statistically significant reductions. It is concluded that the irradiating the product with a dose of 3,0 kGy is more effective for the reduction of bacterial population, with the data in these trials indicating a 95,3% reduction in total coliforms, 100% removal of fecal coliforms, and 84,0% reduction of mesophiles, relative to the control samples. (author)

  9. Aspects of the Iea-R1 research reactor seismic evaluation; Aspectos da avaliacao sismica do reator de pesquisa IEA-R1

    Energy Technology Data Exchange (ETDEWEB)

    Mattar Neto, Miguel [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)

    1996-07-01

    Codes and standards for the seismic evaluation of the research reactor IEA-R1 are presented. An approach to define the design basis earthquake based on the local seismic map and on simplified analysis methods is proposed. The site seismic evaluation indicates that the design earthquake intensity is IV MM. Therefore, according to the used codes and standards, no buildings, systems, and components seismic analysis are required. (author)

  10. Assessment of activity of nitrate-reducing bacterial souring control; Avaliacao da atividade de bacterias redutoras de nitrato no controle de acidificacao de reservatorios de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Sousa, Kally A. de; Cammarota, Magali C.; Servulo, Eliana F.C. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Escola de Quimica

    2008-07-01

    The effect of nitrate addition in relation to NRB concentration was evaluated on biogenic H{sub 2}S generation in anaerobic microcosms with produced water. A 2{sup k} factorial experimental design was performed by using as response variables nitrate (NO{sub 3}{sup -}) and sulfate (SO{sub 4}{sup =}) consumption and nitrite (NO{sub 2}{sup -}) and sulfide (H{sub 2}S) production and as independent variables the SRB and NRB (10{sup 1} - 10{sup 7} MPN/mL) and NO{sub 3}{sup -} (127.5 - 727.5 mg/L) initial concentrations. Each condition was carried out under incubation at 30 deg C during 7, 14 and 28 days. The lowest sulfide production (0.4 - 0.8 mg/L) was achieved for 10{sup 4} MPN/mL of SRB and NRB and 427.5 mg/L nitrate. Also, a reduction of sulfide generation was obtained by nitrate addition when low SRB and NRB concentrations were established. In such condition, the produced sulfide is rather dependent of nitrate concentration. The increase of the NRB concentration has not resulted in the reduction of sulfide production, even when higher nitrate concentrations were used. (author)

  11. Evaluation of radiation effects on dental enamel hardness and dental restorative materials; Avaliacao do efeito da irradiacao na dureza do esmalte dental e de materiais odontologicos

    Energy Technology Data Exchange (ETDEWEB)

    Adachi, Lena Katekawa; Saiki, Mitiko [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil). Supervisao de Radioquimica; Campos, Tomie Nakakuki [Sao Paulo Univ., SP (Brazil). Faculdade de Odontologia. Dept. de Protese

    2000-07-01

    This research presents the results of the microhardness of human dental enamel and of the following dental restorative materials: three dental porcelains - Ceramco II, Finesse and Noritake, and two resin restorative materials - Artglass and Targis, for materials submitted to different times of irradiation at the IEA-R1m nuclear reactor under a thermal neutron flux of 10{sup 12}n cm{sup -2}.s{sup -1} . The results obtained indicated that there is a decrease of the surface microhardness when the enamel is irradiated for 1 h and when dental materials are irradiated for 3 h. However, enamels irradiated for 30 min. did not show significant change of their surface hardness. Therefore, the selection of irradiation time is an important factor to be considered when irradiated teeth or dental materials are used in the investigations of their properties. (author)

  12. Environmental evaluation in the electric sector expansion planing: an strategic approach; Avaliacao ambiental no planejamento da expansao do setor eletrico: uma abordagem estrategica

    Energy Technology Data Exchange (ETDEWEB)

    Pires, Silvia Helena [Centro de Pesquisas de Energia Eletrica, Rio de Janeiro, RJ (Brazil)]. E-mail: silviah@cepel.br; Medeiros, Alexandre [Fundacao Padre Leonel Franca, Rio de Janeiro, RJ (Brazil); Lacorte, Ana; Aquino, Luiz C.S.; Farah, Pedro; Menezes, Paulo C. [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia

    2002-07-01

    This paper presents a resume of the methodology developed for the Socio Environmental Studies Committee - CTSA - of the CCPE, aiming the incorporation of the environment dimension in the expansion indicative planning of the electric sector. The first results of the partial application to the 2001-2010 planning cycle are also presented.

  13. Assessment of the supramolecular structures presents into biological samples by SAXS technique;Avaliacao das estrutras supramoleculares presentes em amostras biologicas atraves da tecnica de SAXS

    Energy Technology Data Exchange (ETDEWEB)

    Conceicao, A.L.C.; Antoniassi, M.; Poletti, M., E-mail: andre_conceicao@yahoo.com.b [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Dept. de Fisica e Matematica

    2009-07-01

    In this work was made an assessment of the supramolecular structures presents into human breast tissue normal and pathological samples, as well as into two types of animals samples (tendon chicken and pork fat) using the small angle x-ray scattering (SAXS) technique. The scattering profiles of the samples were determined at the momentum transfer range O.150nm{sup -1}<=5:q(=4pi.sin({theta}/2)/{lambda})<=8.500nm{sup -1}. In this range, it was possible identify structures corresponding to collagen fibrils (glandular tissue) and to triacylglycerides (adipose tissue) from the correlation between the information extracted from the human breast tissues scattering profiles and those extracted from animals samples. (author)

  14. Evaluation of the normal thoracic and abdominal aorta diameters by computerized tomography; Avaliacao dos diametros normais da aorta toracica e abdominal pela tomografia computadorizada

    Energy Technology Data Exchange (ETDEWEB)

    Lucarelli, Claudio Luiz

    1995-07-01

    The study was undertaken to evaluate, through computerized tomography, the diameters of the normal thoracic and abdominal aorta, as well as they are connected to gender, age and body surface area; and the ratio between measurements obtained at the ascending and descending limbs of the thoracic aorta, and between the abdominal aortic diameters. For that reason, we measured the widest anteroposterior diameters of the thoracic aortas at the levels of the arch, the root, the pulmonary artery, and the thoracic-abdominal transition, as well as the level of the emergence of the superior mesenteric artery, of the renal hila and just cephalad to the bifurcation of the abdominal aortas of 350 patients without cardiovascular diseases who had undergone computerized tomography of the thorax and/or abdomen for any other reasons. Observation and statistic analyses led us to conclude that: 1) both the thoracic and abdominal aortic diameters are reduced from their proximal to their distal portions; 2) the body surface influences the size of the aorta, although only extreme variations alter the vessel's caliber; 3) vessel diameter was observed to gradually increase with age; 4) men were found to have larger diameters than age matched women; 5) the ratio between the ascending and descending aortic diameters varies according to gender and age; 6) the relations between abdominal aortic diameters measured at the level of renal hila and cephalad to the bifurcation are independent from gender and age. But the relation between those measured at the level of the superior mesenteric artery and cephalad to the bifurcation are linked to gender, but not to age. (author)

  15. Evaluation of impact strength of polyamide 6/bentonite clay nanocomposites; Avaliacao da resistencia mecanica sob impacto de nanocompositos de poliamida 6/argila bentonitica

    Energy Technology Data Exchange (ETDEWEB)

    Paz, Rene A.; Leite, Amanda M.D.; Medeirosa, Vanessa da N., E-mail: rene@cct.ufcg.edu.b [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Curso de Pos-Graduacao em Ciencia e Engenharia de Materiais; Araujo, Edcleide M.; Melo, Tomas J.A. [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Dept. de Engenharia de Materiais; Pessan, Luiz A. [Universidade Federal de Sao Carlos (DEMa/UFSCAR), SP (Brazil). Dept. de Engenharia de Materiais

    2010-07-01

    Nanocomposites of polymer/clay have had much attention in recent years, particularly those developed with layered silicates due to the need of engineering materials more efficient than pure polymers for certain applications. The level of exfoliation of layered silicates in crystalline structure of polymer matrices has been studied and has been observed that they affect the crystalline behavior and the physical and mechanical properties. In this study, nanocomposites of polyamide 6 were obtained by the melt intercalation method, using a regional bentonite modified with a quaternary ammonium salt in an amount of 3% by weight. XRD results showed that incorporation of salt among the layers of clay, making it organophilic and obtaining exfoliated and/or partially exfoliated structures. The impact properties of the nanocomposites showed inferior in relation to pure polyamide, in other words, lost of toughness. (author)

  16. Quality of life evaluation of workers for diagnostic radiology services; Avaliacao da qualidade de vida dos trabalhadores de servicos de radiodiagnostico

    Energy Technology Data Exchange (ETDEWEB)

    Fernandes, Ivani Martins

    2011-07-01

    The main objective of this study was to evaluate the quality of life (QOL) of diagnostic radiology services workers at a hospital of Sao Paulo city. It aimed also to draw the profile of these workers identifying the variables, as its influence on their quality of life. A descriptive exploratory study with qualitative and quantitative approaches was carried out. The data were collected using the questionnaires: the abbreviated instrument for the assessment of the QOL, World Health Organization Quality of Life Instrument bref (WHOQOL-bref) and a questionnaire including the social demographic variables, work conditions and the variables that express the lifestyle of individuals, both questionnaires self-applied. The sample was formed by 118 workers, among them: physicians, technologists/technicians in radiology, nurses, technicians and assistants in nursing, and others health professionals. The data analysis included descriptive statistics, nonparametric tests and the use of a linear regression model. The reliability of the instrument for the studied sample was verified by Cronbach's Alpha Coefficient ({alpha}). The WHOQOL-bref proved to be an adequate instrument, with a good level of internal consistency ({alpha}=0.884), being easily and quickly administrated for the evaluation of the QOL. The study provided an overview of the perception of quality of life of the studied group. (author)

  17. Phytochemical study and evaluation of the molluscicidal activity of Calophyllum brasiliense Camb (Clusiaceae); Estudo fitoquimico e avaliacao da atividade moluscicida do Calophyllum brasiliense Camb (Clusiaceae)

    Energy Technology Data Exchange (ETDEWEB)

    Gasparotto Junior, Arquimedes; Brenzan, Mislaine Adriana; Piloto, Izabel Cristina; Cortez, Diogenes Aparicio Garcia [Universidade Estadual de Maringa, PR (Brazil). Dept. de Farmacia e Farmacologia]. E-mail: dagcortez@uem.br; Nakamura, Celso Vataru; Dias Filho, Benedito Prado [Universidade Estadual de Maringa, PR (Brazil). Dept. de Analises Clinicas; Rodrigues Filho, Edson; Ferreira, Antonio Gilberto [Sao Carlos Univ., SP (Brazil). Dept. de Quimica

    2005-07-15

    The bioassay-guided fractionation against Biomphalaria glabrata of hydroalcoholic extracts of Calophyllum brasiliense aerial parts led to the isolation of the coumarin, named (-) mammea A/BB. The compound had its structure determined by both spectroscopic techniques (NMR {sup 1}H, NMR {sup 13}C, gHSQC, gHMBC and MS) and some literature comparison data. The probit analysis of (-) mammea A/BB showed LD{sub 50} = 0.67 ppm and LD{sub 90} = 1.47 ppm. In addition, the dichloromethane extract obtained from C. brasiliense leaves with significant molluscicidal activity against Biomphalaria glabrata was analyzed by HPLC-UV. (author)

  18. Evaluation of average glandular dose in digital and conventional systems of the mammography; Avaliacao da dose glandular media em sistemas digitais e convencionais de mamografia

    Energy Technology Data Exchange (ETDEWEB)

    Xavier, Aline C.S.; Barros, Vinicius S.M.; Khoury, Hellen J., E-mail: alinecx90@gmail.com, E-mail: vsmdbarros@gmail.com, E-mail: hjkhoury@gmail.com [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Energia Nuclear; Mello, Francisca A. de, E-mail: francissamello@yahoo.com.br [Hospital das Clinicas do Recife (HCR/UFPE), PE (Brazil)

    2014-07-01

    Mammography is currently the most effective method of diagnosis and detection of breast pathologies. The main interest in this kid of exam comes from the high incidence rate of breast cancer and necessity of high quality images for accurate diagnosis. Digital mammography systems have several advantages compared to conventional systems, however the use of digital imaging systems is not always integrated to an image acquisition protocol. Therefore, it is questionable if digital systems truly reduce the dose received by the patient, because many times is introduced in the clinics without optimization of the image acquisition protocols. The aim of this study is to estimate the value of incident air Kerma and average glandular dose (AGD) in patients undergoing conventional and digital mammography systems in Recife. This study was conducted with 650 patients in three hospitals. The value of incident air Kerma was estimated from the measurement of the yield of equipment and irradiation parameters used for each patient. From these results and using the methodology proposed by Dance et al. the value of the average glandular dose was calculated. The results obtained show that the lowest value of AGD was found with conventional screen-film system, indicating that the parameters for image acquisition with digital systems are not optimized. It was also observed that the institutions with digital systems use lower breast compression values than the conventional. (author)

  19. 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)

  20. Biodegradation evaluation of recycled polyethylene doped with Moringa oleifera oil; Avaliacao da biodegradacao de filmes de polietileno reciclado dopados com oleo de Moringa oleifera

    Energy Technology Data Exchange (ETDEWEB)

    Bicalho, Luciana A.; Novack, Katia M.; Melo, Tania M.S., E-mail: knovack@iceb.ufop.br [Dept. de Quimica (DEQUI) - Universidade Federal de Ouro Preto (UFOP), Ouro Preto, MG (Brazil)

    2011-07-01

    Chemical modifications and use of additives are some of the mainly ways to obtain polymer materials with especial properties. Vegetable oils incorporated to polymers preserve their structure while make possible a reduction of degradation rate. This work proposed the use of polyethylene, one of the most common polymer commodities, because of its low cost and wide application. In this project it was verified the possibility of making polymer materials with properties of a natural product through the incorporation of Moringa oleifera oil to recycled low density polyethylene (LDPEr) in different proportions. The films were buried for different times and their degradation was evaluated.) Samples were characterized by DSC, TGA and XRD. It was observed that samples doped with Moringa oil showed lower degradation time. (author)

  1. Evaluation of knee meniscus lesions using MRI - a comparative study of pulse sequences; Avaliacao da lesao meniscal por meio de ressonancia magnetica do joelho - estudo comparativo das sequencias

    Energy Technology Data Exchange (ETDEWEB)

    Fernandes, Artur da Rocha C.; Vilela, Sonia de Aguiar; Turrini, Elisabeth; Lederman, Henrique M. [Universidade Federal de Sao Paulo (UNIFESP), SP (Brazil). Escola Paulista de Medicina. Dept. de Diagnostico por Imagem

    1997-05-01

    The frequency of knee disability after injuries has become higher, in this context meniscal lesions keep an important role. This study evaluated 34 MR exams using 1.5-T system (Signa; GE). In this group 26 had 4 sequences (5 acquisitions); 2 coronal (T1, MPGR), 3 sagittal (T1, T2, proton density). The aim of this study was to evaluate the MR pulse sequence`s reproducibility and observer variability. Two readers (A and B) reviewed the exams using the same criteria. The reader A reviewed all sequences for each patient; the reader B reviewed the individual sequences at random on two separate occasions, 6 months apart. The signal expression of meniscal lesion is more evident with T1 (short TR/short TE) sagittal; however, in this sequence the results were less consistent. The sagittal proton density (long TR/short TE) was very close to be the idea sequence: had good concordance among the readings of readers A and B. Kappa concordance test showed best result for sagittal proton density images (Kw = 0.84). (author) 47 refs., 17 figs., 2 tabs.

  2. Technological evaluation of fuel cells using natural gas for distributed power generation; Avaliacao tecnologica da utilizacao de gas natural em celulas a combustivel para geracao distribuida de energia

    Energy Technology Data Exchange (ETDEWEB)

    Brandao, Mauricio O. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-Graduacao de Engenharia (COPPE). Programa de Engenharia Mecanica; Giannini, Marcio P.; Arouca, Mauricio C. [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 search for sustainable and more rational means of power generation motivates the scientific crew to search for more efficient and cleaner systems. Oil dependence becomes from the kind of development that the humanity had and cannot be dismissed. The question is how to use this source in a more intelligent way. Fuel Cells are electrochemical devices that convert into electric energy the chemical energy from oxi-reduction reactions between a fuel and an oxidant. The current fuel used in a Fuel Cell is hydrogen and oxygen is the oxidant. The great advantage of this device is its efficiency, higher than the one achieved with internal combustion engines. Also Fuel Cells are not limited by Carnot's efficiency. This paper is about the implementation of a distributed generation system using Fuel Cells. Technical aspects are approached together with economical and environmental needs. The already existence of Gas pipelines and the grown production of Natural Gas presented by Brazil turns it into a good market for the implementation of this energy source. The evaluation of this paper shows that is technically possible to use NG in Fuel Cells, mostly in South and Southeast regions, applying the distributed generation of energy concept. The most interesting in a strategic manner is that Brazil already have an indication that it's capable of developing this technology, opening a new market tuning with world's new technological developments. Many research centers develop this technology, not only from the cell composition itself, but also manufacturing techniques. (author)

  3. Evaluation of occupational dose from the special procedures guided by fluoroscopy: cardiac catheterism; Avaliacao da dose ocupacional oriunda dos procedimentos especiais guiados por fluoroscopia: cateterismo cardiaco

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Amanda Juliene da

    2011-07-01

    The purpose of this study was to evaluate the dose received by health professionals in the hemodynamic sector of a university hospital in Sao Paulo city. A self-applied questionnaire was used to delineate the profile of health professionals, taking into account sociodemographic variables and variables related to the work with ionizing radiation. The assessment of occupational doses was performed by consulting of the individual dose records of the institution database from 2000 to 2009. A total of 240 records was evaluated, corresponding to 38 active professionals (2009), divided in different professional category: physician, nurses, radiologic technologists and nursing assistants. The annual doses were compared with the limits established by national regulatory authorities. Based on the effective doses received and recorded during the studied period, experimental measures were performed with TL dosimeters in five physicians to evaluate the equivalent dose, in the left hand, during hemodynamic procedures. In addition, the radioprotection measures adopted by health professionals were verified. This study allowed delineating the profile of medical staff that integrates the hemodynamic service as well as knowing the distribution of their doses in relation to limits over the years. (author)

  4. Evaluation of radiosensitivity hemocytes of Biomphalaria glabrata exposed to gamma radiation; Avaliacao da radiossensibilidade de hemocitos de Biomphalaria glabrata expostos a radiacao gama

    Energy Technology Data Exchange (ETDEWEB)

    Silva, L.R.S.; Amaral, A.J., E-mail: luannaribeiro_lua@hotmail.com [Universidade Federal de Pernambuco (UFPE), Recife-PE (Brazil). Dept. de Energia Nuclear; Silva, E.B. [Universidade Federal de Pernambuco (UFPE), Vitoria de Santo Antao, PE (Brazil). Centro Academico de Vitoria; Amancio, F.F.; Melo, A.M.M.A. [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Biofisica e Radiobiologia

    2013-06-15

    The mollusc Biomphalaria glabrata have characteristics that allow them to be identified as an animal model ideal for monitoring areas exposed to chemical agents and physical. This study evaluated the effect of ionizing radiation from Cobalt-60 in haemocytes present in the hemolymph of Biomphalaria glabrata, with the goal of using these cells as indicators of the presence of radiation in aquatic environments. The mollusks were divided into five groups: one control and four subjected doses of 25, 35, 45 and 55 Gy of gamma radiation. After 48 hours of irradiation, the clam hemolymph was collected and slides were prepared and stained with Giemsa for analyses under a light microscope. Statistical analysis was performed using ANOVA and Tukey's test, p <0.05. The results showed that the total number of cells after irradiation reduced compared to control except at a dose of 55 Gy. During data analysis, morphological changes were observed in haemocytes of mollusks subjected to doses of 35, 45 and 55 Gy. These modifications consisted of nucleus bilobulated and nucleo plasmatic bridges. Another change was exclusively observed in the cellular exposure of 55 Gy, where hemocytes showed misshapen nuclei and cytoplasm vacuolisation, suggestive of apoptosis. It is concluded that hemocytes are sensitive to radiation and can be used as indicators of the presence of high doses of ionizing radiation in aquatic environments. (author)

  5. Dose evaluation in medical staff during diagnostics procedures in interventional radiology; Avaliacao da dose na equipe medica durante procedimentos diagnoticos de radiologia intervencionista

    Energy Technology Data Exchange (ETDEWEB)

    Bacchim Neto, Fernando A.; Alves, Allan F.F.; Rosa, Maria E.D.; Miranda, Jose R.A. [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Instituto de Biociencias. Departamento de Fisica e Biofisica; Moura, Regina [Faculdade de Medicina de Botucatu, SP (Brazil). Departamento de Cirurgia e Ortopedia; Pina, Diana R., E-mail: bacchim@ibb.unesp.br [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Faculdade de Medicina. Departamento de Doencas Tropicais e Diagnostico por Imagem

    2014-08-15

    Studies show that personal dosimeters may underestimate the dose values in interventional physicians, especially in extremities and crystalline. The objective of this work was to study the radiation exposure levels of medical staff in diagnostic interventional radiology procedures. For this purpose LiF:Mg,Ti (TLD-100) dosimeters were placed in different regions of the physician body. When comparing with reference dose levels, the maximum numbers of annual procedures were found. This information is essential to ensure the radiological protection of those professionals. (author)

  6. Weldability evaluation of special stainless steels for utilization in petroleum industry; Avaliacao da soldabilidade de acos inoxidaveis especiais a ser utilizados na industria do petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Cortes Paredes, Ramon S. [Parana Univ., Curitiba, PR (Brazil)]. E-mail: ramon@demec.ufpr.br; Borsato, Karin Soldatelli [Pontificia Univ. Catolica do Parana, Curitiba, PR (Brazil); Bernardini, Pedro Amadeo Nanneti [Santa Catarina Univ., Florianopolis, SC (Brazil); Villanueva Aguila, Jaime [Universidade de Tarapaca (UTA), Arica (Chile)

    2003-07-01

    A weldability study of super austenitic stainless steel AISI 904L type 25 Ni. 20 Cr, with Mo, Cu and duplex stainless steel UNS S31803 additions is made. The higher mechanical properties and corrosion resistance of duplex stainless steels, when compared to other kinds of stainless steels, have increased the attention of different industrial areas. According to literature, AISI 904L stainless steel is sensitive to solidification and liquation cracking during welding. The main microstructural features, as well as mechanical properties of duplex stainless steels, can be modify when submitted to multiple thermal cycles , such as happen during welding process. Samples have been prepared and welded by two welding processes: coated electrodes and semi-automatic MIG. The objective was to evaluate the cracking sensitiveness of super austenitic steels . For duplex steels the aim was to research the welding process influence for tubular wire in the microstructure and mechanical properties of a 25 mm plate, which are considered of great thickness. In AISI 904L it has not been observed any solidification cracking in the structure in the two welding processes that were studied. However, cracking of liquation in the affected thermal zone has been observed. In duplex steels the use of different thermal cycles showed variation of delta ferrite in the structure of solidification and variation of ferrite grain size in the ZTA. The formation of nitrate and secondary austenitic was also observed, which results in a proportional hardness increase . The mechanical and microstructure characterization data of those two stainless steels are presented. (author)

  7. Contribution of ultrasonography and scintillography to the evaluation of parothyroid glands; Contribuicao da ultra-sonografia na avaliacao das glandulas paratireoideas

    Energy Technology Data Exchange (ETDEWEB)

    Craide, Rosany Helena [Sao Paulo Univ., SP (Brazil). Hospital das Clinicas. Servico de Ultra-som; Cerri, Giovanni Guido [Instituto do Coracao, Sao Paulo, SP (Brazil). Dept. de Diagnostico por Imagem; Custodio, Melani Ribeiro; Jorgetti, Vanda [Sao Paulo Univ., SP (Brazil). Hospital das Clinicas. Servico de Nefrologia; Oliveira, Ilka Regina S. [Sao Paulo Univ., SP (Brazil). Hospital das Clinicas. Inst. de Radiologia; Vermelho, Marli B.F. [Sao Paulo Univ., SP (Brazil). Hospital das Clinicas. Servico de Ultra-sonografia

    1999-02-01

    Sonography and scintilography are good methods for imaging the parathyroid adenomas and hyperplasias. The diagnostic methods were correlated in order to determine the sensitivity of sonographic evaluation with that of scintigraphy in the preoperative examinations for hyperparathyroidism suspected on clinical groups. Scintigraphic examinations were obtained using technetium-9 9 m and technetium-99m-sestamibi as radionuclide agents. A group of 36 patients was evaluated with sonography 19 being correlated with sestamibi. Our results suggest that sonography yields a sensitivity of 77 and 78.5%in comparison with scintigraphy with technetium-99m and with technetium-99m-sestamibi, respectively. The sonographic limitations are ectopic glands, enlarged thyroid goiter and posteriorly displaced adenomas. (author)

  8. Impact of an evaluation quality program of mammography service of Distrito Federal - Brasil; Impacto de um programa de avaliacao da qualidade dos servicos de mamografia do Distrito Federal

    Energy Technology Data Exchange (ETDEWEB)

    Correa, Rosangela da Silveira

    2002-07-01

    Cancer is the second cause of death for Brazilian women and breast cancer is the most common neoplasm amongst women. Mammography is an essential tool for diagnosis and early detection of this disease. In order to be effective, the mammography must be of good quality. This study sought to evaluate the quality of these services in the Federal District and the impact of an intervention involving inspection and education. The universe of 41 mammography services in the Federal District was studied between June and August 2001. Two instruments were used 1) a proposed evaluation protocol of the National Agency for Health Surveillance (ANVISA) and 2) a protocol for evaluation of image quality and care. The intervention included the initial inspection, a training activity, and a formal notification by the health authorities of the Federal District. Image quality was compared before and after the intervention. The existing infrastructure in the DF is of good quality, but the services have low productivity, they do not treat patients sent by the public health system, they have an inadequate geographic distribution with most in the central neighborhood, and the low income female population has restricted access to early detection of cancer. Of the 36 services who completed the study, none was above 90% conformity in image quality before the interventions, whereas 10 were above 90% afterwards. The greatest improvements were in chassis maintenance (services without chassis with defects went from 10 to 25), breast compression (services in conformity went from 7 to 20) and visualization of micro calcifications (32 services in conformity before and 35 afterwards). The results of the ANVISA protocol bore no relation to final image quality, a central issue for early cancer detection. In spite of the existence of many services, most were not of quality and population access was restricted. The intervention under study was shown to be effective for improving quality, nevertheless ongoing action is needed to resolve the remaining problems and to increase the impact. The proposed method for public monitoring should be modified to evaluate primarily the quality of the final exam provided to the consumer. (author)

  9. Residual stress evaluation and curvature behavior of aluminium 7050 peen forming processed; Avaliacao da tensao residual em aluminio 7050 conformado pelo processo peen forming

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, R.R. de; Lima, N.B., E-mail: rolivier@ipen.b, E-mail: nblima@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil); Braga, A.P.V.; Goncalves, M., E-mail: anapaola@ipt.b, E-mail: mgoncalves@ipt.b [Instituto de Pesquisas Tecnologicas (IPT), Sao Paulo, SP (Brazil)

    2010-07-01

    Shot peening is a superficial cold work process used to increase the fatigue life evaluated by residual stress measurements. The peen forming process is a variant of the shot peening process, where a curvature in the plate is obtained by the compression of the grains near to the surface. In this paper, the influence of the parameters such as: pressure of shot, ball shot size and thickness of aluminum 7050 samples with respect to residual stress profile and resulting arc height was studied. The evaluation of the residual stress profile was obtained by sin{sup 2} {Psi} method. (author)

  10. Chemical constituents and evaluation of antibacterial activity of Macroptilium lathyroides (L.) Urb. (Fabaceae); Constituintes quimicos e avaliacao da atividade antibacteriana de Macroptilium lathyroides (L.) Urb. (Fabaceae)

    Energy Technology Data Exchange (ETDEWEB)

    Sousa, Leoncio M. de; Gois, Roberto W. da S.; Lemos, Telma L. G.; Arriaga, Angela M. C.; Andrade-Neto, Manoel [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil). Departamento de Quimica Organica; Santiago, Gilvandete M.P., E-mail: gil@ufc.br [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil). Departamento de Farmacia; Braz-Filho, Raimundo [Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ (Brazil). Centro de Ciencias e Tecnologias; Costa, Jose G.M. da; Rodrigues, Fabiola F.G. [Universidade Regional do Cariri, Crato, CE (Brazil). Departamento de Quimica Biologica

    2013-11-01

    The chemical investigation of the stems and branches of Macroptilium lathyroides led to the isolation of a mixture of {beta}-sitosterol and stigmasterol. The extracts from the roots allowed the isolation of lasiodiplodin, a mixture of stigmast-4-en-6{beta}-ol-3-one and stigmast-4,22-dien-6{beta}-ol-3-one, de-O-methyllasiodiplodin, genistein and lupinalbin A. The structures of the isolated compounds were assigned on the basis of their NMR data, including comparison of their spectral data with values described in the literature. The antibacterial activity of crude extracts from stems, branches and roots was evaluated. This is the first report involving the chemical investigation of this species. (author)

  11. 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

    The cancer covers a heterogeneous group of more than 100 diseases with different etiology and prognosis. Radiotherapy is one of the most commonly used treatment modalities, aiming at the destruction of cancer cells, using ionizing radiation. One of the limiting factors of radiotherapy is that radiation promotes the death of tumor cells in addition to injure healthy tissue neighboring the tumor, and may cause their death. Irradiation of the skin, accidental or for therapeutic purposes can trigger many injuries culminating in fibrosis, which implies functional alteration of the body. The evaluation of morphological effects associated with skin irradiation becomes essential to develop more effective radiation strategies and decreased morbidity; and in case of accidents, proper handling of the victim.Evaluate radio-induced dermal changes using a Wistar rats model irradiated with 10, 40 and 60Gy. Male Wistar rats, aged approximately three months, were pre-anesthetized with midazolam and xylazine and anesthetized with sodium pentobarbital, shaved in the back, immobilized on polystyrene support in the prone position and irradiated with doses of 10, 40 and 60 Gy, with 4MeV nominal energy electron beams. The skin was irradiated in a 3cm{sup 2} field, and used 0.5cm of tissue equivalent material, to obtain a homogeneous dose distribution. After irradiation, the animals remained on constant evaluation, and the lesions were recorded photographically. The animals were divided into groups and were killed on the irradiation day, 5, 10, 15, 25 and 100 days after irradiation. The skin was fixed in 10% formaldehyde; the samples were embedded in paraffin and cut. The sections were stained with hematoxylin-eosin, picrosirius red and immuno stained with antibody anti-TGF beta1. Another part of the tissue was fixed in 2.5% glutaraldehyde and processed for scanning electron microscopy. It was observed macroscopically the appearance of skin lesions similar to burns on the entire 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)

  12. Renewability emergy index calculation in the evaluation of the sustainability of a national economy; Calculo do indice de renovabillidade emergetica na avaliacao da sustentabilidade de uma economia nacional

    Energy Technology Data Exchange (ETDEWEB)

    Siche Jara, Raul Benito [Universidad Nacional de Trujillo, La Libertad (Peru). Fac. de Ciencias Agropecuarias. Escuela de Ingenieria Agroindustrial], e-mail: Siche.J.R@gmail.com; Ortega Rodriguez, Enrique [Universidade Estadual de Campinas (DEA/FEA/UNICAMP), SP (Brazil). Lab. de Engenharia Ecologica e Informatica Aplicada], e-mail: ortega@fea.unicamp.br

    2006-07-01

    In this study, the emergy methodology was used to analyze the sustainability of the Peruvian economic system. The resources (natural and not natural) and importations had been accounting in units of solar emergy using data of the Peruvian economy for the year 2004. Emergy is an energy measure based in the contribution of the resources and its influence, defined as the energy of a type required producing a flow or storage of another type. The focus of this study is the calculation of the emergy index call 'renewability' (REN), considered as a general measure of the ecological sustainability. In a long period, only systems or processes with high REN are sustainable. This index is calculated by the accounting of the resources renewed used in the economy in emergy units (2.17E+23 seJ) and divided by emergy total that enters to the economic system (6.93E+23 seJ), resulting a REN of 0.31. The renewable resources that use Peru almost represent 20% of the total of renewable resources available in the system. The great amount of renewable resources that Peru can potentially use was calculated in 11.44E+23 seJ, meaning that the system can be more sustainable if the economy is based on increasing the use of renewable resources and to diminish the use of non-renewable resources and imported resources. These data show that Peru has a relatively sustainable economy that can improve or get worse, depending of its politics in the use of resources. (author)

  13. 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)

  14. Phytochemical study and evaluation of anti-inflammatory activity of Aeschynomene fluminensis Vell. (Fabaceae); Estudo fitoquimico e avaliacao da atividade anti-inflamatoria de Aeschynomene fluminensis Vell. (Fabaceae)

    Energy Technology Data Exchange (ETDEWEB)

    Ignoato, Marlene Capelin; Fabrao, Rodrigo Monteiro; Schuquel, Ivania Teresinha Albrecht; Botelho, Marcos Felipe Pinatto; Santin, Silvana Maria de Oliveira [Universidade Estadual de Maringa (UEM) PR (Brazil). Dept. de Quimica; Arruda, Laura Licia Milani de; Bersani-Amado, Ciomar Aparecida [Universidade Estadual de Maringa (UEM) PR (Brazil). Dept. de Farmacologia e Terapeutica; Souza, Maria Conceicao de, E-mail: smoliveira@uem.br [Universidade Estadual de Maringa (UEM) PR (Brazil). Dept. de Biologia

    2012-07-01

    Phytochemical investigation of Aeschynomene fluminensis leaves and branches led to isolation of the flavonoid glycosides kaempferol 3,7-di-O-{alpha}-L-rhamnopyranoside, kaempferol 7-O-{alpha}-L-rhamnopyranoside, kaempferol 3-O-apiofuranosil-7-O- rhamnopyranoside, quercetin 3-O-{alpha}-L-rhamnopyranoside, quercetin 3-O-arabinofuranoside, 8-{beta}-D-glucopyranosyl 4',5,7-trihydroxyflavanone, the isoflavonoid 4',7-di-hydroxy-isoflavone, the dimer epicatechin-(2{beta} ->7, 4{beta} ->8)- epicatechin, the polyol 3-O-methyl-chiro-inositol and two steroids in sitosterol and stigmasterol mixture. These compounds were identified by NMR {sup 1}H and {sup 13}C and compared with literature data. Anti-inflammatory activity of the crude methanolic extract and its fractions was evaluated (author)

  15. Avaliacao do contributo da expressao genética na tolerância à desidratacao em Rosa x hybrida coltivada em humidade relativa elevada

    NARCIS (Netherlands)

    Carvalho, D.R.A.; Vasconcelos, M.W.; Koning-Boucoiran, C.F.S.; Krens, F.A.; Heuvelink, E.; Carvalho, S.M.P.

    2014-01-01

    Cultivation of cut flowers with high postharvest longevity is of extreme importance for consumer’s satisfaction. A negative water balance is indicated as the most important factor reducing longevity. This problem is more severe in plants grown at high relative air humidity (i.e. RH > 85%) mainly

  16. Importance of evaluation of uncertainties on the measurement of natural gas and petroleum volumes; Importancia da avaliacao das incertezas na medicao dos volumes de petroleo e gas natural

    Energy Technology Data Exchange (ETDEWEB)

    Silva Filho, Jose Alberto Pinheiro da; Oliveira, Thiago Barra Vidal de; Mata, Josaphat Dias da [PETROBRAS, Rio de Janeiro, RJ (Brazil)], Emails: jose.pinheiro@petrobras.com.br, thiagovidal@petrobras.com.br, josaphat@petrobras.com.br; Val, Luiz Gustavo do [Instituto de Qualidade e Metrologia (IQM), Rio de Janeiro, RJ (Brazil)], E-mail: gdoval.iqm@petrobras.com.br

    2009-07-01

    The measurement is considered as the 'cash register' of the enterprises, increasing the accuracy and the exigence at each step when come close to the delivery points, where the 0.1 % of differences are discussed. The work presents the approach used in the evaluation of measurement uncertainties in the volumes obtained of petroleum and natural gas at the processes of production in Brazil, and in the international level as well.

  17. Importance of critical evaluation in quality control of scintillation cameras;Importancia da avaliacao criteriosa no controle de qualidade de camaras de cintilacao

    Energy Technology Data Exchange (ETDEWEB)

    Menezes, V.O.; Machado, M.A.D.; Sampaio, L.J.L.; Silva, D.C. [Hospital Sao Rafael, Salvador, BR (Brazil)

    2009-07-01

    The evaluation of quality control results in nuclear medicine must be performed with a critical view over the conditions the tests are executed. This paper is a result of observations in the routine quality control where we set up didactic 'findings' to show the importance of evaluating critical situations while executing the procedures. (author)

  18. 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)

  19. Situational quality evaluation of mammography services at state of Minas Gerais, Brazil; Avaliacao situacional da qualidade dos servicos de mamografia do estado de Minas Gerais, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Joana, Georgia S.; Oliveira, Mauricio de; Andrade, Mauricio C. de; Cesar, Adriana C.Z., E-mail: georgia.santos@saude.mg.gov.b, E-mail: mauricio.cavalcanti@saude.mg.gov.b, E-mail: adrianac@saude.mg.gov.b, E-mail: mauricio.oliveira@saude.mg.gov.b [Secretaria de Estado da Saude de Minas Gerais (SVS/SES-MG), Belo Horizonte, MG (Brazil). Superintendencia de Vigilancia Sanitaria; Oliveira, Marcio A.; Nogueira, Maria do S., E-mail: marcio.alves@saude.mg.gov.b, E-mail: mnogue@cdtn.b [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil); Peixoto, Joao E. [Instituto Nacional de Cancer (INCA), Rio de Janeiro, RJ (Brazil)

    2011-07-01

    Breast cancer is the leading cause of cancer deaths in women. Currently, the most effective method for early detection of this cancer is the mammography, and to achieve the standard definition and contrast, the whole system of imaging must operate under optimal conditions. This paper presents the results of the assessment of mammography centers in the state of Minas Gerais, which was held with the aim of supporting the actions of the State Program of Quality Control in Mammography. These results indicated that less than half of mammography achieved the minimum standard of image quality, endorsing the need of a monitoring more efficient and effective, which led to the establishment, in Minas Gerais, of the monthly monitoring of image quality in mammography. (author)

  20. 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)

  1. 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)

  2. Kerma rate evaluation in the air in a room interventional cardiology; Avaliacao da taxa de Kerma no ar em uma sala de cardiologia intervencionista

    Energy Technology Data Exchange (ETDEWEB)

    Real, Jessica V.; Luz, Renata M. da, E-mail: jessica.real@pucrs.br, E-mail: renata.luz@pucrs.br [Hospital Sao Lucas (HSL/PUCRS), Porto Alegre, RS (Brazil); Fröhlich, Bruna D.; Silva, Ana Maria Marques da, E-mail: bruna.frohlich@acad.pucrs.br, E-mail: ana.marques@pucrs.br [Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS), Porto Alegre, RS (Brazil)

    2014-07-01

    In recent years, the number of interventional cardiology procedures is increasing. However, due to the long time of fluoroscopy in these procedures, care teams can receive high doses of radiation. The radiation scattered by the patient is not uniform, and their assessment is of utmost importance. This study aimed to estimate and map the kerma rate in the air at the time of the gonads, in an interventional cardiology room, seeking to optimize the dose absorbed by individuals occupationally exposed to ionizing radiation. For data collection, the room was divided into quadrants of 1m{sup 2}, totaling 40 collection points. The simulator was positioned so that its entry surface was located in the interventional reference point. Were chosen the conditions that simulate angiography and angioplasty procedures performed in the service. The data were obtained for height of 1 meter, gonad region. The results obtained for kerma rates in air, in quadrants, show that higher measured values was in the vicinity of the X-ray tube. Has been found that the medical staff are more exposed, because of its location during the procedure, around the table. The law of the inverse square distance of the farthest points of the X-ray tube were verified.

  3. Value of ultrasound in the evaluation of blunt abdominal trauma;O valor da ultra-sonografia na avaliacao do traumatismo abdominal fechado

    Energy Technology Data Exchange (ETDEWEB)

    Jayanthi, Shri Krishna

    2008-07-01

    Trauma is a major cause of morbidity and mortality in an age group including from teenagers to young adults, in a male dominant proportion, resulting in great economic and social impact. Within the complex of trauma, blunt abdominal trauma (BAT) is frequent event and presents difficulty in the evaluation and management since the clinical examination shows low sensitivity and specificity. The detection of hemo peritoneum is one of the methods of evaluation of possible indirect intra-abdominal injuries, initially using direct diagnostic abdominal paracentesis and posteriorly the diagnostic peritoneal lavage, that despite the effectiveness, have drawbacks such as invasiveness and the inability of hemo peritoneum quantification and the lesion staging, resulting in non-therapeutic laparotomies. Imaging methods provide useful information in the investigation of abdominal injuries, such as conventional and contrast radiology, ultrasound (US) and computed tomography (CT), which is the best effective method, but has its own drawbacks, such as cost, accessibility, use of ionizing radiation and contrast media and the displacement of the patient to the machine. US presents itself as an alternative in the initial evaluation of these patients as noninvasive method, with lack of harmfulness, low cost, fast answer and portability. Nevertheless, this method also has its limitations, as in cases of abdominal injuries without free fluid. This study was conducted in order to establish the performance of the US in this setting, allowing to rationalise the use of CT. For this purpose we studied 163 patients treated in the ER of HC/FMUSP, with the completion of consecutive US and CT. The population fits the usual profile of trauma victims, with 83% male, 56% in the age group between 20 and 39 years and in 73% of cases victims of traffic accidents. They were brought to the service in an average time of 51 minutes, mainly stable and with satisfactory level of consciousness. US took on average 5 minutes to be performed and the average interval until CT completion was 155 minutes. 31 (19%) of 163 patients showed positive US and 132 (81%) had negative US. 33 (20.2%) of the same 163 patients had positive CT and 130 (79.8%) had negative CT, resulting in a sensitivity of 73%, specificity of 95%, accuracy of 90% in 20% prevalence, with 77% of positive predictive value and 93% of negative predictive value. Correcting the detection of free fluid, results in 64% of sensitivity 98% of specificity 89% of accuracy in 28% of prevalence, with 93% of positive predictive value and 88% of negative predictive value of 88%. Considering the evolution of the patients, US performance was similar to that of CT. Considering need for surgery the US presented accuracy of 87%, positive predictive value of 58% and negative predictive value of 94%, near CT, with accuracy of 91%, predictive value of 67% and negative predictive value of 97%. 24% of patients with abdominal injuries did not have free fluid, as recorded by CT. The hepatorenal space and pelvis were the most frequent sites fluid finding, 74% and 67% at US and 51% and 62% at CT, respectively. Among the factors that showed a tendency for surgery requirement were the presence of fluid in hepatorenal space (14 of 20 patients) and the sum of liquid pockets over 3.0 cm. Detection of parenchymal lesions was low: 4 cases in 33, while only 2 of them confirmed. Among the factors that limit the US study are parenchymal lesions not associated with free fluid and retroperitoneal hematomas. Examiner experience did not influence the number of negative or positive cases, but there was a tendency to false positive with most experienced examiners and false negative with less experienced. Thus, US is an useful tool in the initial evaluation of blunt abdominal trauma, providing information for clinical evaluation, which associated with other data, tailors the management. (author)

  4. Evaluation of the inflammatory activity in chronic osteomyelitis. Contribution of the scintigraphy with polyclonal antibodies; Avaliacao de atividade inflamatoria em osteomielite cronica. Contribuicao da cintilografia com anticorpos policlonais

    Energy Technology Data Exchange (ETDEWEB)

    Sapienza, Marcelo Tatit

    1996-07-01

    Active chronic osteomyelitis or complicating osteomyelitis (superimposed on diseases that changes the normal bone structure fractures, post-surgery, prosthesis) can be difficult to diagnose by anatomic radiological imaging modalities, like plain radiograph and CT. These diseases frequently cause also increased bone remodeling, leading to nonspecific uptake of Tc-99m-bone scan agents and gallium-67. New radiopharmaceuticals with greater inflammation/infection avidity and specificity are being developed, including the nonspecific polyclonal immunoglobulin (IgG) labeled with technetium-99. Tc-99m-IgG may be available as a ready to use kit, with no reported side effects, low patient absorbed radiation dose and low cost. The mechanism of IgG uptake at the inflammation site has not been fully elucidated yet. Specific (receptor linking, physico-chemical immunoglobulin properties) and nonspecific mechanisms (enhanced vascular permeability and macromolecular exudate) has been suggested. IgG scintigraphy results are affected by the isotope, labeling procedure adopted and characteristics of the inflammatory focus. Nineteen patients with suspected osteomyelitis (active chronic osteomyelitis or violated bone osteomyelitis) were studied by Tc-99m-IgG scintigraphy (directly labeled polyclonal immunoglobulin, Sandoglobuilina - Sandoz). All patients also underwent standard three-phase bone scintigraphy using methylene diphosphonate (Tc-99m-MDP), gallium-67 scintigraphy and plain radiographs. Infection was found in 8 sites. Sensitivity and specificity for Tc-99m-MDP, gallium-67 and Tc 99m-IgG scintigraphy were, respectively, 88 and 36%, 75 and 73%,88 and 82%. All patients with false positive IgG scintigraphies had previous surgery. Other current scintigraphic procedures used in the diagnosis of osteomyelitis are also reviewed. (author)

  5. Assessment and epidemiology of Chagas' disease in patients treated in Araguaina - Tocantins; Avaliacao e epidemiologia da cardiopatia chagasica em pacientes atendidos em Araguaina - Tocantins

    Energy Technology Data Exchange (ETDEWEB)

    Correa, Valeria Rita

    2010-07-01

    Chagas disease (AD) was described by Carlos Chagas in 1909. It is caused by a parasite T. cruzi, transmitted by bugs, by blood transfusion, vertical and orally. The DC has two phases: acute and chronic. The evolution to the cardiac form occurs in about 30% of chronic cases and is the largest cause of mortality in chronic Chagas disease. The aim of this study was to Chagas' disease in patients of Tocantins, compared with other heart patients and asymptomatic from the standpoint of non-invasive exams using radiant energies such as echocardiography and ECG and RX. The descriptive study included 80 patients, 20 chronic form of Chagas disease, 20 indeterminate, 20 with other heart diseases, and 20 controls. There was a prevalence of 9.5% of chagasic patients treated in outpatient cardiology at Araguaina Tocantins, and 7.3% in chronic and 2.21% in the indeterminate. Of the chronic patients in the study 50% had mega esophagus and megacolon 4 (20%). Most patients had no family history of AD, nor was a smoker or drinker. Major electrocardiographic abnormalities found refer to driving. The evaluation of ICT, the chronic chagasic showed that increased by 40% of patients, 40% had esophageal changes and 20% of patients had megacolon s. The echocardiogram was abnormal in 42%). 27% of patients had EF below 55% changed. Changes in segmental contractility and Asynchrony septum were found in 80% of chronic Chagas disease. In 80% of the patients was observed diastolic dysfunction. The valvular changes occurred in 75%. Electrocardiographic abnormalities occurred in 80% of patients with CCC, while the other heart had ECG changes. Arterial hypertension had an incidence of 45% in patients with CCC and 40% in FCI. The systolic and diastolic ventricular dysfunction was more prevalent in groups that had an abnormal ECG and arrhythmia. Observed that the group of chagasic decreased ejection fraction is correlated to a higher incidence of arrhythmias besides diastolic dysfunction and related increased atrio-left, ICT correlates with LV size and EF and LA. The abnormal ECG also are related to the dysfunction. (author)

  6. A regulatory model for conformity evaluation in natural gas building installations; Um modelo regulatorio para avaliacao da conformidade das instalacoes prediais de gas natural

    Energy Technology Data Exchange (ETDEWEB)

    Fossa, Alberto Jose; Santos, Edmilson Moutinho dos [Universidade de Sao Paulo (USP), SP (Brazil). Inst. de Eletrotecnica e Energia

    2008-07-01

    The challenge of the Brazilian growth needs to consider necessarily the energy arrangements, and natural gas has relevant participation in this matter. The possibility of its end use that make possible an effective adequacy of our energy matrix must be supported by modern concepts of quality and conformity. In this particular, the program of 'Tecnologia Industrial Basica' (TIB), including concepts and application of conformity evaluation processes, is considered basic for the construction of a consistent gas market. This paper present the Brazilian reality related to TIB aspects and elements, from which it constructs a technician and regulatory building gas installations model proposal for a conformity evaluation program in the country. (author)

  7. Isolation and cytotoxicity evaluation of some oxoaporphine alkaloids from Annonaceae; Isolamento e avaliacao da atividade citotoxica de alguns alcaloides oxaporfinicos obtidos de annonaceae

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Denise Brentan da; Matos, Maria de Fatima Cepa; Nakashita, Simone T.; Misu, Carina K.; Yoshida, Nidia Cristiane; Carollo, Carlos Alexandre; Fabri, Joao Roberto; Miglio, Hercules da Silva; Siqueira, Joao Maximo de [Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande, MS (Brazil). Centro de Ciencias Biologicas e da Saude. Dept. de Farmacia]. E-mail: jmaximo@nin.ufms.br

    2007-07-01

    A different methodology was used to isolate and purify oxoaporphine alkaloids, as they are difficult to separate by the usual workup when in mixture. Alkaloid extracts from Annonaceae species were obtained by base/acid extraction. The extracts were concentrated and submitted to partition in solutions of acids of different pKa values, followed by separation by preparative TLC using 1 mm thick silica gel impregnated with oxalic acid (11.2% w/w). Liriodenine, lisycamine, lanuginosine, and O-methylmoschatoline were obtained and tested against tumoral cells (line Hep{sub 2}, ATCC-CCL 23, larynx carcinoma). Only O-methylmoschatoline (IC{sub 50} 12.4 muM) was more active than cisplatin (18.0 muM). (author)

  8. Assessment in dogs tympanic bulla, through virtual tomographic endoscopy; Avaliacao de bulas timpanicas em caes, por meio da endoscopia tomografica virtual

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Luciana Carandina da; Sabino, Emanuelle Guidugli, E-mail: lucianacarandina@uol.com.br [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Faculdade de Medicina Veterinaria. Dept. de Reproducao Animal e Radiologia Veterinaria; Vulcano, Luiz Carlos; Machado, Vania Maria de Vasconcelos [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Faculdade de Medicina Veterinaria

    2012-07-01

    Dogs usually have problems related to the auditory canal. For the diagnosis of these pathologies, it is necessary a physical examination and, in some cases radiographic examination and computed tomography. The tympanic bulla is not easily visualized radiographically, since there is many structures of the brain overlaying the image obtained. The computed tomography has been the technique of choice to assess this structure faithfully. A new alternative assessment of the tympanic bulla is tomographic virtual endoscopy, which allows an improvement of the image obtained through the virtual tomographic technique. This paper provides information on the use of computed tomography, and a new technique, tomographic virtual endoscopy, in order to make the improvement of these techniques, and prove the reliability of these changes in the diagnosis of ear canals of dogs. Therefore, we performed the computed tomography of the tympanic bulla on healthy animals, and later performed image reconstruction in three-dimensional (3D) mode for virtual endoscopy. (author)

  9. Quantitative computed tomography as a test of endurance for evaluation of bony plates; Utilizacao da tomografia computadorizada quantitativa como teste de resistencia para avaliacao de placas osseas

    Energy Technology Data Exchange (ETDEWEB)

    Melo Filho, E.V.; Costa, L.A.V.S.; Oliveira, D.C. [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil); Freitas, P.M.C. [Escola de Veterinaria - Universidade Federal de Minas Gerais - Belo Horizonte, MG (Brazil); Teixeira, M.W.; Costa, F.S. [Universidade Federal Rural de Pernambuco - Recife, PE (Brazil)

    2012-06-15

    Quantitative computed tomography was used to determine the radiodensity of bony plates. The CT scans provided information regarding radiodensity of bony plates and allowed to verify the uniformity of bone mineral density in their scope. The proposed methodology should be considered as another tool for determining the resistance of these biomaterials. (author)

  10. Evaluation of operational management in the oil terminals using human factor indicator; Avaliacao da gestao operacional em terminais com o uso do indicador de fator humano

    Energy Technology Data Exchange (ETDEWEB)

    Mendes, George L.D. [PETROBRAS, Rio de Janeiro, RJ (Brazil); Lima, Gilson Brito Alves [Universidade Federal Fluminense, Niteroi, RJ (Brazil). LATEC. Mestrado Profissional em Sistemas de Gestao

    2005-07-01

    This research has as objective to analyze the continuous improvement in a management system at TRANSPETRO in Madre de Deus Terminal (BA), environment and occupational health, particularly in the reduction of the accident levels. We consider relevant in this research the effective implementation of the human factor that includes the boarding of the work system relating them it three points: individual activities, organizational processes of work and activities, emphasizing the management of these resources and the communication between them. The case study it was make in a company of logistic of fuels. The methodology was lead through bibliographical research and applied closed questionnaire (adaptation's baseline API 770 - Manager's Guide to Reducing Human Errors Improving - Improving in the Process Industries) in 2003 and 2005 with the manager, coordinators, supervisors, operators and others technician. Were analyzed results of the company in management security and occupational health, such as: pointers of the tax of frequency of accidents with and without removal, volume of leaked product and results of internal and external audits. We conclude that the importance of the human factor in the Safety Management that propitiated significant progress in the organization during the development of the research. (author)

  11. Magnetic resonance imaging of sella turcica: evaluation of patients with galactorrhea, amenorrhea and hyperprolactinemia; Ressonancia magnetica da sela turca: avaliacao de pacientes com galactorreia, amenorreia e hiperprolactinemia

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Alair Augusto Sarmet M.D. dos [Hospital Universitario Antonio Pedro, Niteroi, RJ (Brazil). Dept. de Radiologia; Moreira, Denise Madeira [Universidade Federal, Rio de Janeiro, RJ (Brazil). Faculdade de Medicina. Dept. de Radiologia; Andreiuolo, Pedro Angelo [Beneficencia Portuguesa de Niteroi, RJ (Brazil). Servico de Radiologia Santa Cruz Scan

    1999-08-01

    We have selected 135 cases of patients who have done magnetic resonance imaging of sella region, carried out from September, 1991 to August, 1996, who had galactorrhea (G), amenorrhea(A), and hyperprolactinemia (H), isolated or in association. The patients were divided in seven groups, according to the presence of these symptoms and signs. All examinations were made in a private clinic in the city of Rio de Janeiro, Brazil. Correlating these patients with the results of the magnetic resonance images, we found 57 micro adenomas, 31 normal examinations, 22 macro adenomas, 11 pituitary hyperplasias, 7 empty sella and 7 cases included in other aspects. The micro adenoma predominated in groups 1 (GAH), 2 (GH), 3 (HA) and 5 (H), that is, in all groups whose patients had hyperprolactinemia. In macro adenomas, a bright signal on T 1-weighted images indicates pituitary apoplexy with intratumoral hemorrhage. All in all, the magnetic resonance imaging is excellent method to be used in the evaluation of patients with changes in the hypothalamic-pituitary axis. (author)

  12. 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)

  13. Dynamic evaluation of the nominal capacity for connection of wind parks; Avaliacao dinamica da capacidade nominal para conexao de parques eolicos

    Energy Technology Data Exchange (ETDEWEB)

    Yip, Tony; Lloyd, Graeme; An, Chang [Areva T and D, Sao Paulo, SP (Brazil); Aten, Martin; Ferris, Bob [E.ON Central Networks (United Kingdom)

    2010-06-15

    The capacity dynamic determination was applied to 132 kV line, for protection and load management purposes, increasing the possibility of wind generation connection. The capacity was calculated based on climatic measurements, coordinate the automatic dispatch. To guarantee that the capacity was not surmounted, a backup system was used composed by relay. (author)

  14. Evaluation of effects of ionizing radiation on materials used in dental restorations;Avaliacao dos efeitos da radiacao ionizante em materiais utilizados em restauracoes dentarias

    Energy Technology Data Exchange (ETDEWEB)

    Maio, Mireia Florencio

    2009-07-01

    This work consisted of quantitative studies of the effects caused by ionizing radiation on materials used in dental restorations (Titanium, Amalgam, Resin Composite and Glass Ionomer) aiming the deleterious effects of radiotherapy when patients with tumors in head and neck, arising when the teeth are restored within in the field of radiation. Samples were submitted to X-ray beams of 6 MV from a linear accelerator, VARIAN 2100C model. The samples were analyzed by X-ray fluorescence techniques to compare the chemical composition before and after the irradiation. The sample were submitted to Geiger-Mueller detectors and the ionization chambers in order to verify any residual radiation in the samples. The samples were also analyzed by gamma spectrometry by a Germanium detector. These tests were performed to determine small changes in the composition in the samples due to the radiation interaction. The results of this study may encourage the development of new research for alternative materials in dental restorations that can contribute to improve the quality of life of those patients with tumors of the mouth. (author)

  15. Evaluation of thermal stability of paraffin wax by differential scanning calorimetry; Avaliacao da estabilidade termica de parafina por calorimetria diferencial de varredura

    Energy Technology Data Exchange (ETDEWEB)

    Godinho, K.O.; Silva, A.G.P.; Holanda, J.N.F. [Universidade Estadual do Norte Fluminense (LAMAV/UENF), Campos dos Goytacazes, RJ (Brazil). Grupo de Materiais Ceramicos], Email: holanda@uenf.br

    2010-07-01

    Phase change materials for heat storage are used as passive solar energy storage materials, which can be impregnated into construction materials. In this work the thermal stability (heating/cooling cycle) of the paraffin wax was investigated using differential scanning calorimetry. The latent heat and fusion temperature were determined for the following thermal cycles: 0, 30, 180 and 360. The thermal stability for paraffin wax infiltrated in support of gypsum was also determined. The experimental results showed that the paraffin wax showed good thermal stability in the states pure and infiltrated for up to 360 thermal cycles. (author)

  16. Performance evaluation on projects of energy efficiency of AES ELETROPAULO - indicators proposition; Avaliacao de desempenho de projetos do programa de eficiencia energetica da AES Eletropaulo - proposicao de indicadores

    Energy Technology Data Exchange (ETDEWEB)

    Saidel, Marco Antonio; Gimenes, Andre Luiz Veiga; Braga, Lillian Kariny Queiroz Serra; Rangel, Paulo Jose da Silva Mourao; Sigoli, Jose Marcelo [Universidade de Sao Paulo (USP), SP (Brazil). Dept. de Engenharia de Energia e Automacao Eletricas. Grupo de Energia; AES ELETROPAULO, SP (Brazil)]. E-mail: saidel@pea.usp.br; gimenes@gmail.com; lillian.braga@poli.usp.br; rangel@pea.usp.br; marcelo.sigoli@aes.com

    2006-07-01

    This work proposes a series of quality and performance indicators for quantitatively and qualitatively evaluation of Energy Efficiency of the Law 9991/2000, through a punctuation criterion, and to evaluate the performance of the Energy Service Companies (ESC), from the results of the projects presented and executed considering their final results related to presented proposals.

  17. Synthesis and preliminary evaluation of N-acylhydrazone compounds as antibacterial and antifungal agents; Sintese e avaliacao preliminar da atividade antibacteriana e antifungica de derivados N-acilidrazonicos

    Energy Technology Data Exchange (ETDEWEB)

    Cachiba, Thomas Haruo; Carvalho, Bruno Demartini; Carvalho, Diogo Teixeira [Universidade Federal de Alfenas, MG (Brazil). Fac. de Ciencias Farmaceuticas. Dept. de Alimentos e Medicamentos; Cusinato, Marina; Prado, Clara Gaviao; Dias, Amanda Latercia Tranches, E-mail: diogo.carvalho@unifal-mg.edu.br [Universidade Federal de Alfenas, MG (Brazil). Inst. de Ciencias Biomedicas

    2012-07-01

    We describe the synthesis and evaluation of N-acylhydrazone compounds bearing different electron-donating groups in one of its aromatic rings, obtained using a four-step synthetic route. IC{sub 50} values against pathogenic fungi and bacteria were determined by serial microdilution. Compounds showed low activity against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. By contrast, a derivative with a meta-oriented electron-donating group showed significant activity (IC50) against Candida albicans (17 {mu}M), C. krusei (34 {mu}M) and C. tropicalis (17 {mu}M). Results suggest this is a promising lead-compound for synthesis of potent antifungal agents. (author)

  18. Glass forming ability of the Al-Ce-Ni system; Avaliacao da capacidade de formacao vitrea do sistema Al-Ce-Ni

    Energy Technology Data Exchange (ETDEWEB)

    Triveno Rios, C. [Engenharia Mecanica, Universidade Federal de Mato Grosso, Rondonopolis, MT (Brazil)], e-mail: triveno@ufmt.br; Surinach, S.; Baro, M.D. [Departamento de Engenharia de Materiais - Universidade Federal de Sao Carlos, SP (Brazil); Bolfarini, C.; Botta, W.J.; Kiminami, C.S. [Departamento de Fisica da Universidade Autonoma de Barcelona, Bellaterra (Spain)

    2010-07-01

    In the present work, the glass forming ability (GFA) and its compositional dependence on Al-Ni-Ce system alloys were investigated in function of several thermal parameters. Rapidly quenched Al{sub 85}Ni{sub 15}-{sub X}Ce{sub X} (X=4,5,6,7,10), Al{sub 90}Ni{sub 5}Ce{sub 5}, Al{sub 89}Ni{sub 2}.{sub 4}Ce{sub 8}.{sub 6}, Al{sub 80}Ni{sub 15.6}Ce{sub 4}.{sub 4} and Al{sub 78}Ni{sub 18.5}Ce{sub 3.5} amorphous ribbons were produced by melt-spinning and the structural transformation during heating was studied using a combination of X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results showed that the GFA and the thermal stability in the Al-rich corner of Al- Ni-Ce system alloys were enhanced by increasing the solute content and specifically the Ce content (author)

  19. 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)

  20. Evaluation of the capacity of heavy metal adsorption in exfoliated vermiculite; Avaliacao da capacidade de adsorcao de metal pesado em vermiculitas esfoliadas

    Energy Technology Data Exchange (ETDEWEB)

    Lima, J.F.; Silva, P.S.; Hanken, R.B.L. [Universidade Federal de Campina Grande (UAEMa/UFCG), PB (Brazil). Unidade Academica de Engenharia de Materiais; Raposo, C.M.O., E-mail: raposo@dmg.ufcg.edu.b [Universidade Federal de Campina Grande (UAMG/UFCG), Bodocongo, PB (Brazil). Unidade Academica de Mineracao e Geologia

    2009-07-01

    Many groups from modern society have seen with attention the issues of pollutants, generally present in nature, those same that have caused irreversible damages to the environment. The Vermiculite, a phyllosilicate, with t-o-t structure, have high interlamelar charge, has been studied as cationic exchanger, whose application when exfoliated, are increased. This work has the objective of evaluate the absorption capacity of chromium (III), in different concentrations, in high, slim and medium concentrations of exfoliated vermiculites. The results obtained from the characterization by spectroscopy in infrared and by diffraction of x-ray from prepared solids showed important variations in the quantity of adsorbed metal in order the size of the concentrated particles. (author)

  1. Evaluation of secondary crystallization effect in poly hydroxybutyrate and silanized coir dust composites; Avaliacao do efeito da cristalizacao secundaria em compositos de polihidroxibutirato e po de coco silanizado

    Energy Technology Data Exchange (ETDEWEB)

    Mello, Carolina C. de; Costa, Marysilvia F. da; Thire, Rossana M.S.M., E-mail: ccmello@metalmat.ufrj.br [Programa de Engenharia Metalurgica e de Materiais/Universidade Federal do Rio de Janeiro - UFRJ - Centro de Tecnologia, Rio de Janeiro, RJ (Brazil)

    2011-07-01

    Polyhydroxybutyrate is a natural and biodegradable polyester, susceptible to secondary crystallization when it is stored at environment temperature. Coir dust is an agroindustrial waste which has good prospects for use as filler in composites. In this context, PHB-coir dust composites were produced. The compatibilization was made by coir dust silanization. The secondary crystallization evolution on materials was evaluated by x-ray diffraction. Its effect was verified by tension tests which presented that elastic modulus increases when crystallinity increases. (author)

  2. Evaluation of the life cycle of integrated production of ethanol and biodiesel; Avaliacao do ciclo de vida da producao integrada de etanol e biodiesel

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Simone Pereira de [Universidade Estadual de Campinas (UNICAMP), SP (Brazil)], email: sp.souza@yahoo.com.br; Pacca; Sergio Almeida [Universidade de Sao Paulo (USP), SP (Brazil). Escola de Artes, Ciencias e Humanidades], email: spacca@usp.br

    2010-07-01

    Sugarcane and palm are amongst the crops with the highest yields, which can reach 6 to 7.5 thousand liters of ethanol per hectare year and 4 to 6 metric tons of oil per hectare year, respectively. A joint production of biofuels from these crops is an interesting alternative for life cycle assessment improvement through fossil fuel and greenhouse gas emissions reduction, besides energy efficiency gains. The objective of this work is comparing the Brazilian production system sugarcane ethanol with an integrated system proposal where the ethanol and palm biodiesel are produced together. This comparative study is based on a life cycle approach using the ISO 14.044/2006 and appropriate indicators. Production systems in Cerrado, Cerradao and grassland ecosystem were considered. The energy balance, carbon balance and land use change were evaluated. The integrated system includes a 100% substitution of biodiesel by diesel, which is used in life cycle agriculture stages. Distinct fractions of sugarcane used for sugar production were assessed. When all sugarcane is sent to sugar production, ethanol is produced by molasses. The data were collected by direct observation method by questionnaire and secondary sources. Three sugarcane mills situated in Sao Paulo state and a palm mill located in Para state were surveyed. Results showed a 164% increase in energy balance for the joint production system in comparison to the traditional system. Besides this, the joint production system demonstrated a 24% GHG emission reduction. For ethanol production by molasses, the energy balance was up to 59% and 162% higher in scenarios 1 and 2, respectively, which differ each other through of the boiler that was utilized. For GHG emission, the reduction can reach 91%. The land use change identify an average ecosystem carbon payback time for Cerrado, Cerradao and Degraded Grassland of 5, 10, and -5 years, respectively. In conclusion, the joint production system of sugarcane ethanol and palm biodiesel presents an improvement in energy balance, GHG emissions and land use change impacts in comparison to the traditional ethanol system. (author)

  3. Chemical and microbiological assessments of the multi mixture treated by gamma radiation; Avaliacao quimica e microbiologica da multimistura tratada por irradiacao gama

    Energy Technology Data Exchange (ETDEWEB)

    Goncalves, Cinthia Graciele

    2008-07-01

    In Brazil, the multi mixture have being used since the eighties as an alternative against severe infantile malnutrition of the poorest population. However, its use is still reason of controversies mainly due to: the presence of anti nutritional factors, the microbiological quality and the nutritional value. Considering the routine use of multi mixture in the region, this work aimed to evaluate samples of multi mixture were collected in the metropolitan area of the City of Belo Horizonte/MG for determining the anti nutritional factors (phytic and oxalic acids), the microbiological quality, the centesimal and mineral composition, and still the induced effect in these factors of the gamma radiation. For the analyses, the samples passed by the process of gamma irradiation at doses of: 2, 4, 6, 8 and 10 kGy and then were evaluated anti nutritional factors (phytic acid and oxalic), the microbiological quality (yeasts and molds, Salmonella, Coagulase positive Staphylococcus, Bacillus cereus, coliform to 45 deg C) to full percentage (moisture, ash, proteins, carbohydrates and lipids) and the efficiency of the method of Paramagnetic Electronic Resonance (EPR) in the detection of irradiated samples. The mineral composition of the samples was carried out by the irradiation by Neutronic Activation. The methods used were searched in literature. The obtained results suggest that the concentration of the phytic and oxalic acids can not be appropriated for the children with severe nutritional deficit and that it would be necessary additional control in their daily ingestion due to the absorption of essential minerals. In general the samples had presented acceptable microbiological quality for consumption, except by one of it. The data of the centesimal and mineral composition, in the usually recommended portions, showed lower concentration than recommended for children. Any significant alteration in phytic and oxalic acids as well as in the centesimal composition were detected after gamma irradiation. The electronic paramagnetic resonance can be detected irradiated samples. (author)

  4. Morpho-functional study of ionizing radiation effects on the rabbits` femoral vein; Avaliacao morfofuncional do efeito da radiacao ionizante sobre a veia femoral. Estudo experimental em coelhos

    Energy Technology Data Exchange (ETDEWEB)

    Sakiyama, Mauro Yoshimitsu

    1995-12-31

    In this study we evaluate the effects of the ionizing radiation on the rabbits femoral vein. The samples of femoral vein were obtained from 56 New Zealand rabbits, male with ageing from 90 to 120 days, that were divided into 4 groups of 14 animals: one control group non-irradiated and three animal groups sacrificed 2 days, 14 days and 90 days after irradiation. In the three irradiated rabbits groups, each animal received the total dose 4000 cGy (rads) divided in 10 sessions of 400 cGy, a dose equivalent that utilized on clinical therapeutic. A morpho functional study of vein samples was carried out with: light microscopy: stained by hematoxin - eosin, Masson`s tricromic, and Verhoeff. Immunohistochemical: reactions of immunoperoxidase with monoclonal mouse anti-human endothelial cell factor CD-31 and anti-human Von Willebrand factor (factor VIII), to study the vein endothelium. Histomorphometry of elastic fiber system stained by Weigert`s resorcin-fuchsin with and without prior oxidation with oxone; for the study of mature, elaunin or pre-mature and oxytalan or young elastic fibers. Electronic microscopy: transmission and scanning. With the methodology utilized we observe changes in the femoral vein of the animals submitted to irradiation in relation to the control group, thus described: there is formation of vacuoles between the endothelium and the basal membrane, called sub endothelial vacuoles, in focal areas. The factor VIII and CD-31 endothelial antigens are preserved with no changes in their functions. Focal alterations are present in the endothelial surface with disorder in the setting and orientation of the endothelial cells. there is degeneration of the elastic fibers with significant decrease in their quantity in the stage, 2 days and 14 days after irradiation. There is increase in the quantity of elastic fibers in the late stage, 90 days after irradiation, tending to normality. In this present study, the changes described are not accompanied by venous thrombosis. (author) 101 refs., 22 figs., 2 tabs.

  5. Influencias platónicas en el pensamiento de clemente de alejandría

    Directory of Open Access Journals (Sweden)

    José Antonio Llamas Martínez

    2001-01-01

    Full Text Available Las obras de Clemente de Alejandría son el reflejo más exacto de la filosofía platónica. La influencia de Platón fue bastante evidente durante el periodo helenístico. Clemente de Alejandría es un intelectual formado a la luz de diversas escuelas helenísticas. Sin embargo, esta razón no es suficiente para confirmar tal influencia. Es cierto que Clemente elige a Platón y no a Aristóteles como inspiración de su pensamiento cristiano. Hubo otros intelectuales que, no sólo no hicieron referencia a ningún filósofo, sino que losrechazaron abiertamente. Clemente admira tanto a Platón que identifica su filosofía como un auténtico testamento, con un valor realmente propedéutico, como hubiera sido el testamento para la nueva filosofía cristiana

  6. La centralidad en las comunicaciones y la influencia percibida en los pequeños grupos

    Directory of Open Access Journals (Sweden)

    Nancy Noemi Terroni

    2003-06-01

    Full Text Available Este trabajo reporta los resultados de medidas del análisis de redes en la comunicación de pequeños grupos que resuelven una tarea de recuperación de memoria y su asociación con la influencia percibida. El reactivo empleado es una historia y los 65 participantes, alumnos de la Universidad Nacional de Mar del Plata, debieron reconstruir la misma primero en forma individual, luego grupal colaborativa y nuevamente en forma individual. Se registraron las interacciones grupales con comunicación cara a cara y mediada por computadora; se analizaron las medidas de prominencia, la centralidad y el prestigio de la comunicación y el tipo de alocución, orientado a la gestión grupal o hacia la tarea. Se observaron asociaciones significativas entre las medidas reticulares y la influencia percibida para ambos medios de comunicación y se hallaron diferencias en la comunicación de gestión grupal. Se discuten estos resultados con relación a las restricciones que imponen los canales de comunicación mediados.

  7. Factores determinantes de la actividad en el mercado laboral gallego. Influencia del género

    Directory of Open Access Journals (Sweden)

    Mª Carmen Sánchez Sellero

    2013-04-01

    Full Text Available En este trabajo se estudian las características personales que determinan la actividad (ocupación o paro en la población gallega. Para ello se construye el modelo de actividad, en el cual se estima la probabilidad de que una persona en edad de trabajar forme parte de la población activa.Una vez estimados los parámetros del modelo mediante regresión logística binaria, se calculan las probabilidades de actividad condicionadas a distintas características personales, para evaluar la influencia real de las mismas en la forma en que un individuo se integra en el mercado de trabajo. Del análisis empírico se obtiene que la característica más destacada es el sexo, y que la influencia de las demás variables sobre las distintas probabilidades varía en función del sexo de la persona analizada.

  8. Influencia de la estrategia "toma de decisiones" en el autoconcepto de adolescentes consumidores de alcohol

    Directory of Open Access Journals (Sweden)

    Reyna Isabel Hernández Pedroza

    2015-12-01

    Full Text Available El objetivo de esta investigación fue determinar la influencia de la estrategia "toma de decisiones" en el autoconcepto de adolescentes consumidores de alcohol. Se aplicó un estudio longitudinal, pre-experimental. Se incluyeron 30 adolescentes, previo consentimiento informado de estudiantes y padres. La recolección de datos se realizo con AUDIT, test de conflicto decisional y The Tennessee Self-Concep Scale (TSCS. Se encontró que la edad promedio fue 16.56 ± 0.85 años, 60% hombres, el 100% de los adolescentes presentaron conflicto decisional. El 100% habían consumido alcohol alguna vez en su vida. No se encontró diferencia estadísticamente significativa entre el autoconcepto pre y post intervención (p = 0.27, excepto en la dimensión Yo moral (p = 0.01. Se concluye de acuerdo a los resultados obtenidos en la pre y post intervención que la estrategia de intervención tuvo una influencia en la dimensión del autoconcepto Yo Moral del adolescente consumidor de alcohol. Es posible que esto influyera en la percepción de sí mismo al encontrarse con la realidad de que por primera vez consideraba su capacidad o incapacidad para tomar decisiones.

  9. Crescimento de mudas de moringa em função da salinidade da água e da posição das sementes nos frutos

    Directory of Open Access Journals (Sweden)

    Francisco de Assis de Oliveira

    2013-02-01

    Full Text Available A escolha das sementes é de fundamental importância para a obtenção de mudas de qualidade, principalmente quando são produzidas sob condições ambientais adversas. Este trabalho foi desenvolvido com o objetivo de avaliar a influencia da salinidade sobre o desenvolvimento de mudas de moringa provenientes de sementes localizadas em diferentes posições no fruto. O delineamento utilizado foi o inteiramente casualizado, com os tratamentos arranjados em esquema fatorial 3 x 4 e quatro repetições. Os tratamentos resultaram da combinação de três posições de sementes no fruto (basal, mediana e apical com quatro níveis de salinidade da água de irrigação (0,5; 2,0; 3,5; e 5,0 dS m-1. Foram avaliadas as seguintes características de crescimento: altura (ALT, diâmetro do caule (DC, diâmetro da raiz principal (DRP, número de folhas (NF, área foliar (AF, massa seca da parte aérea (MSPA, massa seca do sistema radicular (MSR e massa seca total (MST. Os dados foram submetidos à análise de variância pelo teste F e as médias, comparadas pelo teste de Tukey a 5% de probabilidade, para o efeito da posição da semente no fruto; e por análise de regressão, para os dados provenientes da salinidade. Houve interação significativa na maioria das características avaliadas. A salinidade da água de irrigação diminuiu em todas as variáveis. As mudas provenientes de sementes localizadas na porção basal dos frutos foram mais afetadas pela salinidade da água de irrigação.

  10. Ineficácia da autorregulamentaç��o das propagandas de bebidas alcoólicas: uma revisão sistemática da literatura internacional Inefficacy of self-regulation of alcohol advertisements: a systematic review of the literature

    OpenAIRE

    Alan Vendrame; Ilana Pinsky

    2011-01-01

    OBJETIVO: A literatura científica mais recente aponta que a publicidade de bebidas alcoólicas influencia o comportamento, particularmente o consumo precoce e em grandes quantidades por crianças e adolescentes. Da perspectiva da saúde pública, a publicidade de bebidas alcoólicas deve ser restringida. Em muitos países, assim como no Brasil, os limites são estabelecidos pela autorregulamentação (ou seja, controlados pela própria comunidade publicitária). Analisou-se na presente revisão o conjunt...

  11. ESTRATÉGIA PARA A GESTÃO DA INFORMAÇÃO NO PROGRAMA SAÚDE DA FAMÍLIA DO GOVERNO BRASILEIRO

    Directory of Open Access Journals (Sweden)

    Guilherme Dantas Nogueira

    2008-12-01

    Full Text Available O presente artigo discute a estratégia para a gestão da informação do Programa Saúde da Família, o principal programa de atenção básica à saúde, do governo brasileiro, e porta de entrada para os serviços de atenção à saúde no país. Trata-se de uma pesquisa exploratória, norteada pelos conceitos de Cultura Organizacional, Informação, Comportamento Informacional e Gestão da Informação e do Conhecimento. Buscou-se explorar como é feita a gestão da informação do Programa Saúde da Família, mapeando seus fluxos desde a determinação de necessidades por informações até seu uso, bem como o processo praticado de gestão da informação. Verificou-se, também, como a cultura organizacional, contextualizada em relação à gestão pública brasileira e ao próprio Programa Saúde da Família, influencia os fluxos de informação e processo de sua gestão. Com base nos resultados da pesquisa, um novo e mais assertivo processo de gestão da informação foi proposto, visto o contexto do programa.

  12. Estratégia para a gestão da informação no programa saúde da família do governo brasileiro

    Directory of Open Access Journals (Sweden)

    Guilherme Dantas Nogueira

    2010-08-01

    Full Text Available O presente artigo discute a estratégia para a gestão da informação do Programa Saúde da Família, que é o principal programa de atenção básica à saúde do Governo brasileiro, sendo também a porta de entrada para os serviços de atenção à saúde no país. Trata-se de uma pesquisa exploratória, norteada pelos conceitos de Cultura Organizacional, Informação, Comportamento Informacional e Gestão da Informação. Buscou-se explorar as estratégias de gestão da informação do Programa Saúde da Família, mapeando seus fluxos desde a determinação das necessidades por informações até o uso das mesmas. Verificou-se, também, como a cultura organizacional, contextualizada à gestão pública brasileira e ao próprio Programa Saúde da Família, influencia os fluxos de informação e processo de sua gestão. Com base nos resultados da pesquisa, um novo processo de gestão da informação mais assertivo foi proposto.

  13. Influencia del zen en la génesis del judo.

    OpenAIRE

    Villamón Herrera, Miguel; Molina Alventosa, Joan Pere

    2000-01-01

    A partir de la descripción de las variadas influencias filosóficas y culturales que recogió el maestro Jigoro Kano para fundar el judo, presentamos una aproximación a una de sus más importantes raíces orientales: el zen. En el siglo III convivían en China tres doctrinas: el confucionismo, el taoísmo y el budismo. A partir de ellas se generó, hacia el s. IV, el budismo ch'an. El ch'an penetró en Japón a partir del s. XII. Este budismo ch'an se conocerá en Japón con el nombre de zen. Las destre...

  14. Entretenimiento, espiritualidad, familia y la influencia de pares universitarios en el consumo de drogas

    Directory of Open Access Journals (Sweden)

    Aydee Rivera de Parada

    2015-01-01

    Full Text Available El objetivo del estudio fue examinar la relación de los factores socio-culturales de familia, entretenimiento y espiritualidad y la influencia de pares y el consumo de drogas entre los estudiantes universitarios. Estudio es multicéntrico, con un diseño transversal, participaron 250 estudiantes de una universidad en San Salvador, El Salvador. Se realizaron análisis porcentuales, pruebas de asociación y correlación. Se encontró que los factores socioculturales de familia y espiritualidad podrían estar protegiendo ya que la mayoría 80% valoran positivamente estos dos valores. La mayoría de estudiantes consumen muy poco drogas ilícitas, marihuana 2%, cocaína 1% y anfetaminas 1.2%; pero consume más las drogas lícitas alcohol 42%, tabaco 21%.

  15. INFLUENCIA DE LA GUARDERÍA EN EL PRIMER AÑO DE ED. INFANTIL

    OpenAIRE

    Fernández-Galán, Rebeca

    2012-01-01

    En este trabajo se aborda el tema referente a la influencia que tiene la guardería en la incorporación y la evolución del niño en el primer curso de educación infantil. Se pretende analizar en este proyecto cómo influye la guardería en el primer año escolar del niño y las diferencias que existen en el aprendizaje de distintos conceptos entre los niños que han asistido a la guardería y los que no. Para ello se han empleado fichas y cuestionarios, en una muestra realizada en un centro esc...

  16. La influencia del liderazgo sobre el aprendizaje. El papel mediador del contexto organizativo

    Directory of Open Access Journals (Sweden)

    Susana Pérez López

    2012-09-01

    Full Text Available En este trabajo se analiza la relación existente entre liderazgo y aprendizaje organizativo. Con apoyo en investigaciones previas, se plantea un modelo cuya premisa básica es que la relación entre ambos conceptos es directa e indirecta, en la medida en que el liderazgo influye sobre el contexto organizativo en que se desarrolla el aprendizaje. El presente modelo teórico ha sido contrastado empíricamente a partir de una muestra de 162 empresas españolas, confirmándose la influencia del liderazgo sobre la cultura organizativa y el desarrollo de las políticas de recursos humanos, factores que, a su vez, influyen sobre el aprendizaje. Sin embargo, la relación directa entre liderazgo y aprendizaje organizativo no se confirma. Las implicaciones del estudio, limitaciones y futuras líneas de investigación son discutidas en el trabajo.

  17. Study of the influence in crystallization period in MCM-22 zeolite synthesis; Estudo da influencia no periodo de cristalizacao na sintese da zeolita MCM-22

    Energy Technology Data Exchange (ETDEWEB)

    Barbosa, A.S.; Santos, E.R.F.; Rodrigues, M.G.F., E-mail: antoniellybarbosa@yahoo.com.br [Universidade Federal de Campina Grande (UFCG), Campina Grande, PB (Brazil). Unidade Academica de Engenharia Quimica

    2011-07-01

    The synthesis of MCM-22 is accomplished by hydrothermal treatment and long periods needed for crystallization, with the gradual growth of crystals of 10-14 days. MCM-22 catalyst is studied intensively as promising, with high thermal stability. As part of a line of research focused on the development of zeolite with lowest cost, this study aimed to examine the effect in decreasing the period of crystallization in the synthesis of zeolite MCM-22. The materials were characterized by X-ray diffraction (XRD) spectroscopy, X-ray Energy Dispersive (EDX) and Fourier transform infrared spectroscopy and Fourier transform (FT-IR). By XRD it was observed that the hydrothermal treatment used in the synthesis was effective during periods of crystallization and EDX was observed that the samples have a high percentage of silica and low alumina content, which gives them a high ratio SiO{sub 2}/Al{sub 2}O{sub 3} characteristic of the MWW structure. (author)

  18. Electric arc furnace dust utilization in iron ore sintering: influence of particle size; Utilizacao da poeira de aciaria eletrica na sinterizacao de minerio de ferro: influencia da granulometria

    Energy Technology Data Exchange (ETDEWEB)

    Telles, V.B.; Junca, E.; Rodrigues, G.F.; Espinosa, D.C.R.; Tenorio, J.A.S., E-mail: victor_bridit@hotmail.co [Universidade de Sao Paulo (USP), SP (Brazil). Dept. de Engenharia Metalurgica e de Materiais

    2010-07-01

    The aim of this work was to study the utilization of electric arc furnace dust (EAFD) generated in steelmaking by electric arc furnace (EAF) as raw material in iron ore sintering. The waste was characterized by size, chemical composition and X-ray diffraction. The physical characterization showed that 90% of the particles have a size less then 1,78 {mu}m and the material have the tendency to agglomerate. The waste were submitted to a pre-agglomeration prior to its incorporation in the sinter. The influence on the addition of the waste with different granulometry in the iron or sinter production were analyzed by sinter characterization and sintering parameters. (author)

  19. Fishing activity characterization in areas under influence of seismic activity; Caracterizacao da atividade pesqueira em areas sob influencia da atividade sismica

    Energy Technology Data Exchange (ETDEWEB)

    Fuse, Izabel Yukimi; Zanella, Joao Francisco Illa Font; Eliseire Junior, Dirceu; Pereira, Edisio [Hidrosfera Oceanografia e Meio Ambiente, Rio de Janeiro, RJ (Brazil); Souza, Sergio Augusto Coelho de; Ferraz, Alexandre; Costa, Leandro Soares da; Vidal, Leonardo; Duppre, Mauricio [Okeanos Consultoria e Meio Ambiente Ltda. (Brazil); Uller, George [CGG do Brasil, Rio de Janeiro, RJ (Brazil)

    2004-07-01

    Seismic surveys are an important method in prospecting for oil and gas reservoirs in the marine environment. The ELPN/IBAMA has required that companies develop an adequate social programme in parallel with the seismic surveys to establish a better interaction with the communities influenced by these operations and reduce possible negative effects. Between January and October 2003, CGG Brazil studied coastal communities in the following areas. BM-CE-1 e BM -CE-2, Ceara; Fragata, BM-ES-5 e BM-ES-6, Espirito Santo; BM BAR-1 e BM BAR-3, Maranhao and BM-C-25 and BM-C-16 off Campos basin. Communities and groups that could potentially be influenced by the surveys were visited to mitigate direct and indirect impacts. Preliminary results show that fisheries were the main group to be monitored. A standard questionnaire was used to characterize the local fisheries and interviews were held with fishermen, boat owners and members of the fishery industries (n=422). In Ceara the fishery is typically handmade and occurs in water depths up to 200 meters. The main boat propulsion is sail and the 'Cacoeira' is the most popular gear used. Off Espirito Santo, small and medium motored boats are usually used and line is the main gear among the fishermen. At Barreirinhas (Maranhao), boats are usually up to 14 meters long, and operate in water depths of up to 120 metres. Again the 'cacoeira' is the proffered gear. We concluded that Programs carried out by CGG reached their purpose. This is confirmed by low incident rate between seismic ships and the fisheries fleet. (author)

  20. Soil texture and depth influence on the neutron probe calibration; Influencia da textura e profundidade do solo na calibracao da sonda de neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Reginaldo Ferreira [UNESP, Botucatu, SP (Brazil). Dept. de Engenharia Rural; Carlesso, Reimar [Santa Maria Univ., RS (Brazil). Dept. de Engenharia

    1998-07-01

    The neutron probe is an equipment used on determination of the soil water content, based on the fast neutron attenuation. Therefore, there is a calibration need in the field and, consequently, to verify the soil texture and depth influence for to determining the calibration curves in relation to the water content. The study was developed at Santa Maria's Federal University in a lisimeter group, protected from the rains with transparent plastic. There different soil textures, three depths (10, 30 and 50 cm from the soil surface) and four replicates were used. Linear regression equations between neutron counts and soil water contents were made. The results showed that there was interference of the texture and depth of the soil, analyzed jointly, on the calibration curves, and the observed and estimated values varied form o,02 to 0,06 cm3/cm3 of the soil water content and the correlation coefficients were 0,86 0,95 and 0,89 for clayray, franc-silt-clayey and franc-sandy, respectively. For soil texture and depth, analyzed separately, the differences among the values observed in the field and the estimated ones, varied from 0,0 to 0,02 cm3/cm3 soil water content and presented correlation coefficients between 0,97 and 1,0. (author)

  1. Influence of chemical composition of civil construction waste in the cement paste; Influencia da composicao quimica dos residuos da construcao civil a pasta de cimento

    Energy Technology Data Exchange (ETDEWEB)

    Cunha, G.A.; Andrade, A.C.D.; Souza, J.M.M.; Evangelista, A.C.J.; Almeida, V.C., E-mail: valeria@eq.ufrj.b [Universidade Federal do Rio de Janeiro (EQ/UFRJ), RJ (Brazil). Escola de Quimica

    2009-07-01

    The construction and demolition waste when disposed inappropriately might cause serious public health problems. Its reutilization focusing on the development of new products using simple production techniques, assuring a new product life cycle and not damaging the environment is inserted in sustainable concept. The aim of this work was identifying the characteristics of types of waste generated in a residential reform (glassy ceramic and fill dirt leftovers) verifying separately its influence on cement pastes mechanical behavior. Cement pastes + wastes were prepared in 25% and 50% proportions with an approximately 0,35 water/cement relation and, glue time determination, water absorption, resistance to compression and X-ray fluorescence assays were taken. The results indicate that the chemical composition of the waste causes changes in the behavior of cement pastes, reflecting on their resistance to compression. (author)

  2. Análise da mobilidade lombar e influência da terapia manual e cinesioterapia na lombalgia

    Directory of Open Access Journals (Sweden)

    Josyane Ulian Briganó

    2005-12-01

    Full Text Available Este trabalho objetiva comparar os efeitos da terapia manual e cinesioterapia em pacientes com lombalgia, bem como a mobilidade lombar de indivíduos com e sem dor nesta região. Para evidenciar os efeitos da terapia manual e cinesioterapia, utilizou-se uma amostra de conveniência composta por 25 indivíduos com idade entre 18 - 65 anos, diagnóstico clínico de lombalgia crônica; foram excluídos os pacientes com cirurgias lombares, doenças reumáticas, fraturas e submetidos a outro tratamento clínico. Estes submeteram-se a avaliação da dor pela Escala Visual Analógica (EVA, da mobilidade lombar pelo teste de Shöber e ao tratamento composto por 30 sessões de fisioterapia (terapia manual e cinesioterapia, posteriormente foram reavaliados somente pela escala de dor. Para a análise da mobilidade lombar pelo teste de Schöber, estabeleceu-se um grupo controle, de mesma idade e gênero, com 25 indivíduos assintomáticos. Analisou-se estatisticamente o resultado da EVA dos indivíduos com lombalgia, antes e após o tratamento, pelo teste de Wilcoxon Signed Ranks Test. Para evidenciar a diferença de mobilidade lombar entre indivíduos com lombalgia e assintomáticos, aplicou-se o teste “t” de Student para amostras não pareadas. A significância estatística estipulada foi em 5% (0,05. Como resultado, foi encontrada diferença estatisticamente significante na comparação da EVA antes e após o tratamento fisioterápico (p< 0,05 e também para a mobilidade da coluna lombar em indivíduos sintomáticos e assintomáticos (p<0,05. Concluiu-se que a cinesioterapia e a terapia manual têm influencia significativa na melhora da lombalgia e que a mobilidade lombar é diminuída quando comparada a indivíduos assintomáticos.

  3. Influencia del clima escolar y familiar en adolescentes, víctimas de ciberacoso

    Directory of Open Access Journals (Sweden)

    Jessica Ortega Barón

    2016-01-01

    Full Text Available El ciberacoso es un fenómeno de creciente preocupación social que afecta cada vez más a niños y adolescentes de todos los países desarrollados. A diferencia de la considerable literatura que hay sobre las relaciones entre el acoso escolar y el contexto familiar y escolar, todavía hay pocos trabajos sobre la influencia de estos entornos sociales en el problema del ciberacoso. Mediante una metodología cuantitativa, el objetivo principal del presente estudio fue analizar la influencia del contexto escolar y familiar en víctimas de ciberacoso. La muestra estuvo formada por 1.062 adolescentes (51,5% chicos y 48,5% chicas, de edades comprendidas entre los 12 y los 18 años (M=14,5; DT=1,62. Se establecieron tres grupos de contraste: cibervíctimas severas, cibervíctimas moderadas y no víctimas de ciberacoso. Los resultados del análisis de varianza indicaron que las cibervíctimas severas en comparación con las no víctimas puntúan significativamente más alto en conflicto familiar y obtienen puntuaciones más bajas en el resto de variables familiares (autoestima familiar, cohesión y expresividad, y variables escolares (implicación, afiliación y ayuda al profesor, consideradas en el estudio. Los análisis de regresión revelaron que la autoestima académica y familiar y algunas dimensiones del clima familiar y escolar predicen la cibervictimización en la adolescencia. Estos novedosos resultados muestran la importancia de incluir a la familia y a la escuela en los programas de prevención del ciberacoso.

  4. Influencia de la microestructura en la fractura de aceros microaleados de forja

    Directory of Open Access Journals (Sweden)

    Romero, J. L.

    1996-06-01

    Full Text Available The influence of thermomechanical treatments, first carried out at laboratory and afterwards on an industrial scale on the mechanical properties of microalloyed forging steels is analysed. The influence of hot working conditions and the cooling rate after hot working on both the strength and the toughness is analysed. Optimization of the thermomechanical treatments parameters has been carried out at laboratory and the optimized schedules have been carried out industrially. The actual experimental results of mechanical properties have been rationalized in terms of the microstructure developed during the different thermomechanical treatments. After slow cooling of steel bars hot rolled at low temperature (below 850 °C, the ferrite-pearlite is much refined and the toughness improved. Alternatively, accelerated cooling after hot working at high temperature produces a microstructure of acicular ferrite with improved toughness.

    Se analiza la influencia de los tratamientos termomecánicos, en primer lugar, llevados a cabo en laboratorio y, posteriormente, en un proceso industrial, sobre las propiedades mecánicas de aceros microaleados de forja. Se han variado las temperaturas de forja y las velocidades de enfriamiento tras la misma y se ha estudiado su influencia sobre la resistencia y la tenacidad. La optimización de los tratamientos termomecánicos se ha realizado a nivel de laboratorio, probándose posteriormente las secuencias optimizadas a escala industrial. Las propiedades mecánicas se pueden explicar en términos de las microestructuras obtenidas en los diversos tratamientos termomecánicos. Así, microestructuras gruesas, obtenidas por enfriamientos lentos tras la deformación a elevadas temperaturas, muestran un comportamiento frágil. Se pueden obtener buenos valores de tenacidad, manteniendo la resistencia por afino de la microestructura, bien deformando el material a menores temperaturas de forja (ferrita+perlita finas o

  5. Influência da suplementação aguda e crônica de creatina sobre as concentrações sanguíneas de glicose e lactato de ratos Wistar Influencia de la suplementación aguda y crónica de creatina sobre las concentraciones sanguíneas de glicosis y lactato en ratones Wistar Influence of the short and long term supplementation of creatine on the plasmatic concentrations of glucose and lactate in Wistar rats

    OpenAIRE

    Renato Aparecido Souza; Roberto Mussoline dos Santos; Rodrigo Aléxis Lazo Osório; José Carlos Cogo; Antônio Carlos Guimarães Prianti Júnior; Rodrigo Álvaro Brandão Lopes Martins; Wellington Ribeiro

    2006-01-01

    Estudos recentes sugerem que a suplementação de creatina pode interferir com a captação de glicose e a produção de lactato durante a atividade física. O objetivo deste estudo foi investigar os efeitos da suplementação aguda (5g.kg¹ durante uma semana) e crônica (1g.kg¹ durante oito semanas) de creatina sobre as concentrações sanguíneas de glicose e lactato de ratos sedentários e exercitados (natação a 80% da carga máxima tolerada). Setenta e dois ratos Wistar machos (240 ± 10g) foram utilizad...

  6. Influencia de la electroerosión sobre las características tribológicas de materiales compuestos WC-Co

    Directory of Open Access Journals (Sweden)

    Casas, B.

    2001-04-01

    Full Text Available The influence of electrical discharge machining (EDM on the abrasive wear resistance of two WC-10wt Co cemented carbides with different carbide grain size has been studied. Different surface finish conditions were evaluated corresponding to sequential EDM as well as grinding and polishing with diamond. The abrasive wear resistance was determined through microscratch measurements using a nanoindentation system. Contrary to the results obtained from hardness measurements, this technique allows to discern tribological differences among the distinct surface finish conditions studied. Finally, the abrasive wear resistance degradation associated with sequential EDM is discussed as a function of microstructure in terms of a damage parameter.

    En este trabajo se estudia la influencia de la electroerosión sobre la resistencia a la abrasión mediante rayado, en términos de volumen de material removido, de dos carburos cementados WC-10 % en peso de Co con diferente tamaño de carburo medio. Se evaluaron diferentes condiciones de acabado superficial correspondientes a distintos procesos de mecanizado: electroerosión y desbaste y pulido con diamante. La resistencia a la abrasión mediante rayado fue determinada utilizando un sistema de nanoindentación. A diferencia de los resultados obtenidos para mediciones de dureza, esta técnica permite discernir diferencias tribológicas significativas entre los distintos acabados evaluados. Finalmente, la degradación de la resistencia a la abrasión por efecto de la electroerosión es discutida en función de la microestructura, en términos de un parámetro de daño.

  7. Influencia de Las Cargas Térmicas Sobre Flujos de Aire Generados en Una Habitacíon

    DEFF Research Database (Denmark)

    Olmedo, Inés; Ruiz de Adana Santiago, Manuel; Nielsen, Peter V.

    2011-01-01

    El flujo de aire en el interior de un local generado con un sistema de ventilación y difusión de aire puede verse afectado por las cargas térmicas internas del local. En este trabajo, se estudia la influencia de las cargas térmicas internas debidas a personas en el flujo de aire interior de un lo...

  8. Influencia del carbono y el cromo en el comportamiento tribológico de aleaciones férreas

    Directory of Open Access Journals (Sweden)

    García, A.

    2005-12-01

    Full Text Available This study compares the abrasive wear resistance of a carbon steel, used in the linings of coal mills, and ferrous alloys with different chromium and carbon content. It also analyses the influence of chromium and carbon content on mechanical properties, such as hardness, and microstructure. The abrasive wear resistance of the different materials was determined by means of ASTM G 105, "Standard Test Method for Conducting Wet Sand/Rubber Wheel Abrasion Test". A blasting test was used to study erosive wear resistance.

    En este estudio se analiza la influencia, en las propiedades tribológicas, del contenido en carbono para distintas aleaciones férreas con similares contenidos en cromo, así como la influencia del cromo cuando el contenido en carbono es semejante. También, se analizó la influencia de estos elementos en propiedades como la dureza y en la microestructura de las aleaciones. Para el estudio tribológico se llevaron a cabo dos ensayos, el ensayo descrito en la norma ASTM G105: Standard Test Method for Conducting Wet Sand/Rubber Wheel Abrasion Test y ensayos de chorreo.

  9. State-of-art of the vegetation influence on the built environment: from the urban to the building scale; Estado da arte acerca da influencia da vegetacao no ambiente construido: da escala urbana a do edificio

    Energy Technology Data Exchange (ETDEWEB)

    Pietrobon, Claudio E. [Universidade Estadual de Maringa, PR (Brazil). Dept. de Engenharia Civil]. E-mail: carmen@cybertelecom.com.br; Lamberts, Roberto [Santa Catarina Univ., Florianopolis, SC (Brazil). Dept. de Engenharia Civil]. E-mail: lamberts@ecv.ufsc.br; Pereira, Fernando O.R. [Santa Catarina Univ., Florianopolis, SC (Brazil). Dept. de Arquitetura e Urbanismo]. E-mail: feco@arq.ufsc.br

    2000-07-01

    This review paper presents the research made in USA, including studies made by the Lawrence Berkeley Laboratory - University of California and the review papers made by MEIER(1991) and GIVONI(1991). Also, it presents brazilian studies and research about landscaping strategies to climatic mitigation, visual comfort and electric energy conservation on the built environment. (author)

  10. 何谓DaF,DaZ,DaM?

    Institute of Scientific and Technical Information of China (English)

    金秀芳

    2004-01-01

    DaF(Deutsch als Fremdsprache)“对外德语” 这是一个在德语界耳熟能详的术语,人们首先想到的也许是德语培训班。实际上,DaF发展到今天,已成了一个广义的概念(Oberbegriff)。它由两大部分组成:除了人们已熟悉的为母语非德语人士开设的德语语言培训,即语言教学实践(DaF-Lehrgebiet)部分外,还包括学科专业(DaF-Studiengang)部分。

  11. UMA DISCUSSÃO SOBRE A NATUREZA CONTINGENTE E O CRITÉRIO DE RECONHECIMENTO DA DÍVIDA ATIVA DA UNIÃO

    Directory of Open Access Journals (Sweden)

    Paterson da Rocha Severo

    2016-12-01

    Full Text Available A dívida ativa é um crédito decorrente de receitas públicas não recebidas no prazo estabelecido, registrado nas contas públicas após a apuração de sua liquidez e certeza por autoridade administrativa competente. Considerando que dado seu elevado montante o reconhecimento da Dívida Ativa da União (DAU influencia a análise do Balanço Geral da União (BGU, e que o processo de convergência no Setor Público requer a adoção de padrões contábeis fundamentados na Teoria Contábil, o presente estudo tem como objetivo apresentar uma discussão sobre a natureza contingente e o critério de reconhecimento da DAU. Assim, foram levantados dados do período de 2008 a 2013 no Sistema Integrado de Administração Financeira do Governo Federal (SIAFI e no Sistema Integrado da Dívida Ativa da Procuradoria-Geral da Fazenda Nacional (DW Sida, para análise do perfil dos créditos inscritos. Os resultados do estudo mostram que em sua maior parte os valores registrados em DAU apresenta incertezas quanto à sua validade e real possibilidade de recebimento, caracterizando-se, portanto, como ativo contingente. Assim, a DAU deve ser reconhecida no BGU apenas quando benefícios econômicos ou potenciais futuros forem considerados praticamente certos pelos órgãos responsáveis por sua gestão.

  12. Influência de anestésicos locais sobre o bloqueio neuromuscular produzido pelo rocurônio: ação da lidocaína e da mistura enantiomérica em excesso de 50% de bupivacaína na junção neuromuscular Influencia de anestésicos locales sobre el bloqueo neuromuscular producido por el rocuronio: acción de la lidocaína y de la mezcla enantiomérica en exceso de 50% de bupivacaína en la junción neuromuscular Influence of local anesthetics on the neuromuscular blockade produced by rocuronium: effects of lidocaine and 50% enantiomeric excess bupivacaine on the neuromuscular junction

    OpenAIRE

    Angélica de Fátima de Assunção Braga; Vanessa Henriques Carvalho; Franklin Sarmento da Silva Braga; Léa Rodrigues-Simioni; Yolanda Christina S Loyola; Glória Braga Potério

    2009-01-01

    JUSTIFICATIVA E OBJETIVOS: Os efeitos dos anestésicos locais (AL) na transmissão neuromuscular e sua influência no bloqueio neuromuscular produzido por bloqueadores neuromusculares competitivos são ainda alvo de pouca investigação. O objetivo do estudo foi avaliar in vitro os efeitos da lidocaína e da mistura enantiomérica em excesso de 50% de bupivacaína (S75-R25) no bloqueio neuromuscular produzido pelo rocurônio. MÉTODOS: Ratos foram distribuídos em cinco grupos (n = 5) de acordo com o fár...

  13. Nomes de marca estrangeiros: examinando a relacao entre a linguagem e a avaliacao de uma marca internacional

    OpenAIRE

    Olavarrieta Soto, Sergio; Manzur Mobarec, Enrique; Friedmann, Roberto

    2012-01-01

    A eleiçao de nomes de marca em idiomas estrangeiros ("foreign brand names") nos mercados latino-americanos e bastante popular em variadas categorías de produtos, Nos investigamos este fenomeno entendendo os trabalhos originais de Le Clerc et. al. (1989-1994) no contexto de um pais latino americano em desenvolvimento, como o Chile. Para isso realizaram-se esperimentos ulilizando duas linguas estrangeiras: Frances e Ingles, alem da linguagem do pais foco -Espanhol-, o que amplia o estudo origin...

  14. DETECCIÓN DE FACTORES NOD EN. B. elkanii ICA 8001. INFLUENCIA DEL MEDIO DE CULTIVO

    Directory of Open Access Journals (Sweden)

    María C. Nápoles García

    2014-01-01

    Full Text Available Los factores de nodulación, sintetizados por diferentes especies de la familia Rizobiaceae, han sido descritos como señales esenciales en la interacción con plantas leguminosas. Ellos constituyen morfógenos que inducen el desarrollo de nódulos en la planta, permitiendo la entrada de las bacterias a las raíces y han demostrado tener una influencia positiva en el posterior desarrollo de los bacteroides y la eficiencia de la fijación del nitrógeno. Este trabajo está relacionado con la detección, mediante dos técnicas cromatográficas, de la producción de factores Nod por la cepa Bradyrhizobium elkanii ICA 8001, cultivada en diferentes medios; así como el efecto biológico de los inóculos obtenidos en interacción con la planta. Ambos métodos cromatográficos demostraron que la composición del medio de cultivo induce, en mayor o menor cantidad, el número de estructuras de factores Nod producidos por esta bacteria. Además, que inoculantes obtenidos a partir de diferentes composiciones de medio, inducen una nodulación diferenciada sobre plantas de soya.

  15. Influencia del estrógeno en la enfermedad periodontal: revisión de literatura

    Directory of Open Access Journals (Sweden)

    V.F.C. Pazmino

    2015-08-01

    Full Text Available La etiología de la enfermedad periodontal está bien definida, dentro de los agentes etiológicos que la causan podemos citar algunos microorganismos subgingivales como: Porphyromonas gingivalis, Prevotella intermedia, Bacteroides forsythus, Actinobacillus actinomycetemcomitans y espiroquetas. La susceptibilidad del huésped a estos agentes bacterianos también tiene un papel importante dentro del progreso y prevalencia de la enfermedad periodontal. Dentro de los factores de riesgo asociados con la enfermedad periodontal tenemos: el aumento de edad, presencia de biofilm dental o placa bacteriana patogénica, alteración del estado inmunológico, deficiencia nutricional, el uso de medicamentos como corticoides, género, estrés, tabaco, factores genéticos y condiciones sistémicas, dentro de estas se incluyen alteraciones de neutrófilos, diabetes, embarazo, osteoporosis y hormonales. La enfermedad periodontal puede ser exacerbada por determinados factores sistémicos como la deficiencia o aumento de hormonas como estrógeno y progesterona. La presente revisión de literatura tiene por objeto dilucidar la influencia del estrógeno en la enfermedad periodontal.

  16. Mejora de la calidad del acero obtenido por colada continua mediante influencias electrofísicas

    Directory of Open Access Journals (Sweden)

    Shklyar, V.

    1998-12-01

    Full Text Available Laboratory tests with tin smelted in a crucible and industrial tests with crude steel poured in moulds had been carried out. These metals were subjected to electrophysical influences. As a result of the applied electric field, it is observed in tin that during the solidification, the crystalization temperature and the solidification time are changed. Crystal growth in the electric field direction and an increase of the fracture limit in the steel ingot are observed.

    Se han realizado ensayos de laboratorio con estaño fundido en crisol y a escala industrial con acero líquido vertidos en moldes, sometiendo estos metales a influencias electrofísicas. Como resultado del campo aplicado, en el estaño se observa que durante la solidificación varía la temperatura de cristalización y el tiempo de solidificación. En el lingote de acero se observa un crecimiento de los cristales en dirección del campo eléctrico y un aumento del límite de rotura.

  17. La influencia de los rasgos psicológicos en las actitudes hacia el empleo

    Directory of Open Access Journals (Sweden)

    Antonia Mercedes García Cabrera

    2008-01-01

    Full Text Available Esta investigación explica la influencia que el rasgo psicológico locus de control, conjuntamente con las variables que definen el capital humano de un país -género, edad y educación-, ejercen sobre las actitudes hacia el empleo en la República de Cabo Verde. De entre estos rasgos demográficos del individuo, el género es analizado más profundamente debido al interés actual por reducir las desigualdades en razón de género en el mercado laboral. Los 448 cuestionarios recabados muestran que, en este país, los atributos demográficos edad y nivel de estudios, así como el rasgo de personalidad locus de control, son importantes determinantes de las actitudes hacia el empleo de la población activa. Los resultados ofrecen las bases sobre las que redirigir las políticas de empleo en Cabo Verde para afrontar los puntos débiles que limitan el desarrollo del mercado de trabajo y amenazan la integración social.

  18. Influencia del cine en la Generación del 27

    Directory of Open Access Journals (Sweden)

    Flora Lobato

    2008-08-01

    Full Text Available Recibido: 19 de marzo, 2008 • Aprobado: 22 de abril, 2008 Resumen. Este artículo se centra en la influencia que el cine ejerció en la literatura. La aparición del cinematógrafo supuso una revolución en lo cultural; y el mundo de la imagen vino a sumarse a otras artes milenarias, como la pintura y la literatura, las cuales habían servido al hombre para expresar ideas y sentimientos. El cine se considera una rama más de las vanguardias, y, así, el genio creativo de nuestros poetas de la Generación del 27 se vio fructificado, accediendo a territorios antes no explorados por ellos, con lo que sus imágenes y metáforas sobrepasaron los límites conocidos y se adentraron en un universo nuevo, marcado por lógicas de carácter más aperturista.  Abstract. This article focuses on the influence cinema has had on literature, since as we have seen, the arrival of filmmakers led to a cultural revolution. The world of cinema was joined to other traditional arts, suchs as painting and literature, which man had already used to express his ideas and feelings. Cinema forms part of the new 20th century trends, influencing the poets of creating new imagery and metaphors which so greatly enhanced their work.

  19. Calidad de vida laboral y su influencia sobre los resultados empresariales

    Directory of Open Access Journals (Sweden)

    Patricia C. Huerta Riveros

    2011-01-01

    Full Text Available El presente artículo persigue dos objetivos, en primer lugar, realizar una revisión crítica sobre la calidad de vida laboral, bajo el marco de la responsabilidad social corporativa, y además analizar su relación e influencia sobre los resultados empresariales. En segundo lugar, se pretende contrastar los planteamientos anteriores para aportar evidencia empírica al respecto, a partir de una muestra de panel completo de observaciones. El contraste se realiza sobre las sociedades anónimas abiertas chilenas para lo cual se utilizan dos bases de datos: La base de datos de la Asociación Chilena de Seguridad y la Ficha Estadística Codificada Uniforme de Sociedades Anónimas, para el periodo 2003-2006. Aplicando técnicas de paneles de datos, los resultados del estudio muestran que existe una relación positiva y significativa entre la calidad de vida laboral y los resultados empresariales, y además que la calidad de vida laboral influye positivamente en los resultados empresariales que alcanzan las sociedades.

  20. Competitividad y desarrollo en Colombia: influencia de los organismos supranacionales e interés nacional

    Directory of Open Access Journals (Sweden)

    Jeniffer Granados Ruíz

    2014-01-01

    Full Text Available El presente escrito argumenta que la influencia de los organismos supranacionales en las decisiones en cuanto a estrategias comerciales de orden nacional no es coherente con las necesidades del país y por tanto, no están destinadas a favorecer el desarrollo económico regional que se genera a partir del fortalecimiento del aparato exportador. Dichas estrategias estarían más en función del mercado global.Palabras Clave: Organismos supranacionales; comercio; subvenciones; desarrollo; pobreza;  libertad. Competitiveness and development in Colombia. Influence of the supranational organizations and national interestAbstractThis article argues that the influences that supranational organizations are having on trading decisions made by national governments is not being coherent with those countries’ needs, and thus, are not meant to favor the regional economic development that is expected to be generated by the strengthening of the export sector. These strategies are thought in function of the global market.Key Words: Supranational organizations; trade; subsidies; development; poverty; freedom.

  1. Influencia de la temperatura del clínker sobre su molturabilidad

    Directory of Open Access Journals (Sweden)

    Pospisil, Z.

    1979-09-01

    Full Text Available Not avaible

    El objeto del trabajo experimental que Z. Pospisil describe es demostrar que la disminución del rendimiento en la molienda del clínker no se debe tanto en la influencia de la temperatura, como a la carga electrostática que se engendra durante la pulverización del clínker. La necesidad de estudiar la cuestión se debe a que, generalmente, se muele clínker poco enfriado por ser muy limitadas las posibilidades de enfriarle en los silos. La molturación del clínker de cemento portland requiere un considerable consumo de energía. Para una producción anual, mundial, de 500 millones de toneladas, con un consumo específico de 35 kW/t, el consumo de energía es cercano a 18.000 millones de kW/h que corresponde al 0,5 % de la total producción mundial de electricidad.

  2. Preliminary evaluation of the utilization of biopiles technology to the bioremediation of the soil of Guamare/RN (Brazil); Avaliacao preliminar da aplicacao da tecnologia de biopilhas para a biorremediacao do solo de Guamare/RN (Brasil)

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Edmilson P.; Macedo, Gorete R.; Duarte, Marcia M.L. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Engenharia Quimica; Costa, Alex S.S. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2004-07-01

    The aim of this work was to evaluate the use of biopiles to the bioremediation of the soil of Stabilization Station of Guamare-RN-Brazil. The evaluation was performed by the characterization of the soil, tests of biodegradation in laboratory scale and by the use of a complete 2{sup 3} factorial design with triplicate at the central point. The input variables were: Nitrogen concentration; diesel-oil concentration; and inoculum concentration. The response variable was the percentage gravimetric loss of organic matter. Statistical analyses of the main factors and their interactions on the response variable were performed using contour curves and Pareto obtained from the software STATISTICA for Windows, Release 5.5. The results showed that biopiles technology can be used to remediate eventual contaminated areas in that region. (author)

  3. Model for qualitative evaluation of risk in ducts through the fuzzy logic in conformity with the methodology of IBR; Modelo para avaliacao qualitativa do risco em oleodutos atraves da logica fuzzy segundo a metodologia da IBR

    Energy Technology Data Exchange (ETDEWEB)

    Mishina, Koje Daniel Vasconcelos [Centro Federal de Educacao Tecnologica da Bahia (CEFET-BA), Salvador, BA (Brazil); Silva, Jose Felicio da; Silva, Joao Bosco de Aquino [Universidade Federal da Paraiba (UFPb), Joao Pessoa, PB (Brazil)

    2006-07-01

    This work considers a system for qualitative evaluation of the terrestrial risk in pipelines, based in the methodology of the Inspection Based on Risk and the Fuzzy Logic. For this one developed a matrix of risk associated with the oil transport and its derivatives, that define the type of tracking and the regularity of inspection with Pig Instrumented in function of the level of risk found in the stretch in study. This matrix of risk considers the probabilities and the consequences associates to the damage for corrosion. The evaluation of the considered system was based on the consistency of the found levels of risk, in relation to that it would be found in the practical one. The gotten results had demonstrated that the use of the methodology of the IBR and the Fuzzy Logic can be used jointly as one sufficiently efficient alternative technique in the evaluation of risk in corroded pipe-lines. (author)

  4. 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.

  5. Mining adaptation to the radioprotection regulations: evaluation of the regulation CNEN-NN-4.01; Adaptacao da mineracao as normas de radioprotecao: avaliacao da Norma CNEN-NN-4.01

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Wagner de Souza; Kelecom, Alphonse [Universidade Federal Fluminense (LARARA/UFF), Niteroi, RJ (Brazil). Lab. de Radiobiologia e Radiometria; Silva, Cleber Jabarra da; Campinhos, Gabriela Michalsky [Jabarra Servicos e Comercio de Radioprotecao Ltda., Rio de Janeiro, RJ (Brazil). Consultoria em Radioprotecao

    2011-10-26

    This paper proposes a generic model of monitoring to be used in mining with uranium or thorium associated viewing to estimate the dose of workers for classification the mining in the specific question of worker exposure. Besides the monitoring model, a dosimetric model also is proposed. It is indicated some instruments and techniques used in individual and area monitoring, besides to point out the necessity of radioprotection supervisor specific in this area

  6. Assessment of contamination for inorganic elements and phthalate esters in household dust from the metropolitan region of Sao Paulo; Avaliacao da contaminacao por elementos inorganicos e esteres ftalicos em poeira domestica da regiao metropolitana de Sao Paulo

    Energy Technology Data Exchange (ETDEWEB)

    Scapin, Valdirene de Oliveira

    2009-07-01

    Household dust has been identified as an important vector of exposure by inorganic and organic substances potentially toxic in children and adults. The dust composition has a strong influence of contaminants provided from internal and external environments. During the natural process of wearing or weather incidents of artifacts and materials variety, the chemical substances are released into the environment in the steam form or by leaching from final products. Once released, they can be accumulated and enriched in the dust; and by continuous exposure (inhalation, ingestion and dermal contact mechanisms), these substances are harmful to human health. In this work, a study to determine the inorganic constituents and phthalate esters concentrations in residential indoor environment dust samples, correlating them with the probable anthropogenic sources was proposed. Dust samples were collected from 69 residences in neighborhoods Pirituba, Freguesia do O, Jaragua and Perus of the Sao Paulo metropolitan region, using a domestic vacuum cleaner, between 2006 and 2008. The samples were sieved in the fractions of 850, 850-300, 300-150, 150-75, 75-63 and <63 {mu}m. The analysis by X-ray fluorescence (WDXRF) showed the presence of Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, Cr, Mn, Fe, Ni, Cu, Zn, Br, Rb, Sr, Zr and Pb. The presence of phthalate esters (DEHP, DnBP, DEP, DEHA, DMP and BBP) was detected, by GCMS analyses. From the enrichment factor (EF), the elements P, S, Cr, Ni, Cu, Zn and Pb were classified as being significant and extremely enriched in the dust. The natural and anthropogenic contributions by statistical tools as factor analysis (AF) and cluster were identified. The elements Cr, Ni, Cu, Zn and Pb were present significantly elevated concentrations in relation to the total exposure values (ingestion, inhalation and skin contact) and to risk. (author)

  7. Evaluation of the uncertainty for the efficiency curve determination of {sup 210}Pb by liquid scintillation; Avaliacao da incerteza para a curva de eficiencia da determinacao de {sup 210}Pb por cintilacao liquida

    Energy Technology Data Exchange (ETDEWEB)

    Sampaio, C.S.; Sousa, W.O.; Dantas, B.M., E-mail: camilla@ird.gov.br [Instituto de Radioprotecao e Dosimetria, (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2014-07-01

    Methodologies for the evaluation of uncertainties associated with the determination of the efficiency curve of {sup 210}Pb by liquid scintillation counting (LSC) are presented. No statistical difference were found when compared the uncertainties of the curves that represented the counting net before and after the secular equilibrium between {sup 210}Pb and {sup 210}Bi, nether when compared the curves when counting only {sup 210}Pb and the curve with the total count of {sup 210}Pb and {sup 210}Bi, for the same time interval after precipitation. (author)

  8. Combined discrete nebulization and microextraction process for molybdenum determination by flame atomic absorption spectrometry (FAAS); Avaliacao da combinacao da nebulizacao discreta e processos de microextracao aplicados a determinacao de molibdenio por espectrometria de absorcao atomica com chama (FAAS)

    Energy Technology Data Exchange (ETDEWEB)

    Oviedo, Jenny A.; Jesus, Amanda M.D. de; Fialho, Lucimar L.; Pereira-Filho, Edenir R., E-mail: erpf@ufscar.br [Universidade Federal de Sao Carlos (UFSCar), SP (Brazil). Departamento de Quimica

    2014-04-15

    Simple and sensitive procedures for the extraction/preconcentration of molybdenum based on vortex-assisted solidified floating organic drop microextraction (VA-SFODME) and cloud point combined with flame absorption atomic spectrometry (FAAS) and discrete nebulization were developed. The influence of the discrete nebulization on the sensitivity of the molybdenum preconcentration processes was studied. An injection volume of 200 μ resulted in a lower relative standard deviation with both preconcentration procedures. Enrichment factors of 31 and 67 and limits of detection of 25 and 5 μ L{sup -1} were obtained for cloud point and VA-SFODME, respectively. The developed procedures were applied to the determination of Mo in mineral water and multivitamin samples. (author)

  9. Application of nuclear techniques for the assessment of air pollution in the metropolitan area of Belo Horizonte City, MG; Aplicacao de tecnicas nucleares nos estudos de avaliacao da poluicao do ar da regiao metropolitana de Belo Horizonte, MG

    Energy Technology Data Exchange (ETDEWEB)

    Boucas, Janaina Goncalves

    2009-07-01

    Toxic metals, such as Ni, V, Zn, Cu, Cr, Mn and metalloids as As and Se and their compounds are mainly associated with the smaller diameter particulates present in the atmospheric aerosols. This fact is important, principally, when it concerns public health, because this is considered the breathable fraction of particles that can penetrate deeply into the lungs and cause damage to the alveoli. Once in the atmosphere the concentrations of trace metals, in general, show very low levels, thus the determination of the elementary composition of those particles requires the use of appropriate analytical techniques such as Particle Induced X-Ray Emission (PIXE), Neutron Activation Analysis (NAA) and X-Rays Fluorescence spectrometry (XRF), among others. The main objective of this study was the identification of the generating sources of gross (PM{sub 10}) and fine (PM{sub 2.5}) particles present in the atmospheric aerosols of the metropolitan region of Belo Horizonte. Neutron Activation Analyses by k{sub 0}-method (k0NAA) combined with energy dispersed by X-ray fluorescence was used to measurement of the concentration of trace elements present in each sample. High levels of particulate concentrations, especially PM{sub 2.5}, were measured during the sampling period. In general, the air quality varied from Reasonable to Inadequate. The receptor model used to assist in the identification of the main emission sources was the Principal Components Analysis. The results showed that the main elements presents in particulate inhalable matter (PM{sub 2.5} and PM{sub 10}) were Ag, Al, As, Au, Ba, Br, Ca, Cl, Cr, Cu, Fe, K, Mn, Na, S, Sb, Sc, Si, Ti, W and Zn. The results for multi-variable analyses shown clearly four pollutant sources, these being: vehicular emissions; resuspended soil/asphalt powder; secondary aerosols associated with emission of SO{sub 2} and industrial emissions associated with fossil oil burning. (author)

  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 oil, ethanolic and hexane extracts of Peperomia pellucida were tested for antifungal activity against Aspergillus flavus in vitro on Petri plates. The antifungal activity was based on the inhibition zone and IC{sub 50} values against the pathogen on Petri plates assays. Also, the essential oil chemical composition was determined by GC-MS. (author)

  11. Study of the heterogeneity effects of lung in the evaluation of absorbed dose in radiotherapy; Estudo dos efeitos da heterogeneidade de pulmao na avaliacao da dose absorvida em radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Luciana Tourinho

    2006-02-15

    The main objective of radiotherapy is to deliver the highest possible dose to the tumour, in order to destroy it, reducing as much as possible the doses to healthy tissues adjacent to the target volume. Therefore, it is necessary to do a planning of the treatment. The more complex is the treatment, the more difficult the planning will be, demanding computation sophisticated methods in its execution, in order to consider the heterogeneities present in the human body. Additionally, with the appearing of new radiotherapeutic techniques, that used irradiation fields of small area, for instance, the intensity modulated radiotherapy, the difficulties for the execution of a reliable treatment planning, became still larger. In this work it was studied the influence of the lung heterogeneity in the planning of the curves of percentage depth dose, PDP, obtained with the Eclipse{sup R} planning system for different sizes of irradiation fields, using the correction algorithms for heterogeneities available in the planning system: modified Batho, general Batho and equivalent tissue-air ratio. A thorax phantom, manufactured in acrylic, containing a region made of cork to simulate the lung tissue, was used. The PDP curves generated by the planning system were compared to those obtained by Monte Carlo simulation and with the use of thermoluminescent, TL, dosimetry. It was verified that the algorithms used by the Eclipse{sup R} system for the correction of heterogeneity effects are not able to generate correct results for PDP curves in the case of small fields, occurring differences of up to 100%, when the 1x1 cm{sup 2} treatment field is considered. These differences can cause a considerable subdosage in the lung tissue, reducing the possibility of the patient cure. (author)

  12. Evaluation of the radioprotection state-of-the-art for nursing mothers and the recommendation for multidisciplinary teams; Avaliacao do estado da arte da radioprotecao para lactantes e elaboracao de recomendacoes para equipes multidisciplinares

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Liliane dos; Oliveira, Silvia M. Velasques de, E-mail: lirio@ird.gov.b, E-mail: silvia@ird.gov.b [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2009-07-01

    Related to the ionizing radiation exposure, the breast feed babies can be classified as individuals occupational y exposed and public individuals existing dose limits, and nonexisting limits. breast feeds are always considered as public individuals, independently of the category which women are classified. The contamination can occur by ingestion of mother warm milk on the cases of accidents involving mothers occupational y exposed, intake of radionuclides by inhalation, or ingestion, or when the mother are submitted to diagnostic procedures or therapeutics with radiopharmaceuticals, that can reach high concentrations in the milk which can cause significant absorbed doses for the children organs. Besides the internal dose, the close contact between the mother and the baby results in external doses. In Brazil, round 7 % of the diagnostic procedures use {sup 131}I or {sup 123}I, and 84 % are carry out by women. For {sup 131}I, {sup 67}Ga and {sup 201}Tl, it is necessary the definitive interruption of the breast feeding. This work proposes a study on the risk of children and babies breast feed in the country. A questionnaire was developed to be applied to interviews with doctors and nurses on public and private nuclear medicine services, for the evaluation of the procedures used with young women. After that, will be developed a brochure for multidisciplinary teams, presenting the basic concepts on internal dosimetry of the children and babies, allowing the precise prediction of interruption time of the maternal breast feed and, when applicable, the alternative methods for that period

  13. Study of the contribution of the different components of atmospheric cosmic radiation in dose received by the aircraft crew; Avaliacao da contribuicao dos diferentes componentes da radiacao cosmica atmosferica na dose em tripulacoes de aeronaves

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Marlon A.; Prado, Adriane C.M., E-mail: adriane.acm@hotmail.com, E-mail: marlon@ieav.cta.br [Instituto Tecnologico de Aeronautica (ITA/DCTA), Sao Jose dos Campos, SP (Brazil); Federico, Claudio A.; Goncalez, Odair L., E-mail: claudiofederico@ieav.cta.br, E-mail: odairl@ieav.cta.br [Instituto de Estudos Avancados (IEAv/DCTA), Sao Jose dos Campos, SP (Brazil)

    2014-07-01

    The crews and aircraft passengers are exposed to atmospheric cosmic radiation. The flow of this radiation is modulated by the solar cycle and space weather, varying with the geomagnetic latitude and altitude. This paper presents a study of the contributions of radiation in total ambient dose equivalent of the crews depending on flight altitude up to 20 km, during maximum and minimum solar and in equatorial and polar regions. The results of calculations of the particle flows generated by the EXPACS and QARM codes are used. The particles evaluated that contributing significantly in the ambient dose equivalent are neutrons, protons, electrons, positrons, alphas, photons, muons and charged pions. This review allows us to characterize the origin of the dose received by crews and also support a project of a dosimetric system suitable for this ionizing radiation field in aircraft and on the ground.

  14. Dosimetric evaluation of a combination of brachytherapy applicators for uterine cervix cancer with involvement of the distal vagina; Avaliacao dosimetrica de uma combinacao de aplicadores para braquiterapia de tumores do colo uterino com acometimento da porcao distal da vagina

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, Roger Guilherme Rodrigues [Real e Benemerita Sociedade Portuguesa de Beneficencia, Sao Paulo, SP (Brazil). Servico de Radioterapia Estereotactica; Carvalho, Heloisa de Andrade; Stuart, Silvia Radwanski; Rubo, Rodrigo Augusto [Universidade de Sao Paulo (USP), SP (Brazil). Hospital das Clinicas. Servico de Radioterapia], e-mail: handrade@hcnet.usp.br; Seraide, Rodrigo Migotto [Centro de Oncologia Campinas, SP (Brazil)

    2009-07-15

    Objective: To evaluate an alternative brachytherapy technique for uterine cervix cancer involving the distal vagina, without increasing the risk of toxicity. Materials And Methods: Theoretical study comparing three different high-dose rate intracavitary brachytherapy applicators: intrauterine tandem and vaginal cylinder (TC); tandem/ring applicator combined with vaginal cylinder (TR+C); and a virtual applicator combining both the tandem/ring and vaginal cylinder in a single device (TRC). Prescribed doses were 7 Gy at point A, and 5 Gy on the surface or at a 5 mm depth of the vaginal mucosa. Doses delivered to the rectum, bladder and sigmoid colon were kept below the tolerance limits. Volumes covered by the isodoses, respectively, 50% (V50), 100% (V100), 150% (V150) and 200% (V200) were compared. Results: Both the combined TR+C and TRC presented a better dose distribution as compared with the TC applicator. The TR+C dose distribution was similar to the TRC dose, with V150 and V200 being about 50% higher for TR+C (within the cylinder). Conclusion: Combined TR+C in a two-time single application may represent an alternative therapy technique for patients affected by uterine cervix cancer involving the distal vagina. (author)

  15. 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)

  16. 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)

  17. Evaluation of variation of voltage (kV) absorbed dose in chest CT scans; Avaliacao da variacao da tensao (kV) na dose absorvida em varreduras de TC torax

    Energy Technology Data Exchange (ETDEWEB)

    Mendonca, Bruna G.A.; Mourao, Arnaldo P., E-mail: brunabgam@gmail.com [Centro Federal de Educacao Tecnologica de Minas Gerais (CENEB/CEFET-MG), Belo Horionte, MG, (Brazil)

    2013-07-01

    Computed tomography (CT) is one of the most important diagnostic techniques images today. The increasing utilization of CT implies a significant increase of population exposure to ionizing radiation. Optimization of practice aims to reduce doses to patients because the image quality is directly related to the diagnosis. You can decrease the amount of dose to the patient, and maintain the quality of the image. There are several parameters that can be manipulated in a CT scan and these parameters can be used to reduce the energy deposited in the patient. Based on this, we analyzed the variation of dose deposited in the lungs, breasts and thyroid, by varying the supply voltage of the tube. Scans of the thorax were performed following the protocol of routine chest with constant and variable current for the same applied voltage. Moreover, a female phantom was used and thermoluminescent dosimeters (TLD-100), model bat, were used to record the specific organ doses. Scans were performed on a GE CT scanner, model 64 Discovery channels. Higher doses were recorded for the voltage of 120 kV with 200 mAs in the lungs (22.46 mGy) and thyroid (32.22 mGy). For scans with automatic mAs, variable between 100 and 440, this same tension contributed to the higher doses. The best examination in terms of the dose that was used with automatic 80 kV mAs, whose lungs and thyroid received lower dose. For the best breast exam was 100 kV. Since the increase in the 80 kV to 100 kV no impact so much the dose deposited in the lungs, it can be concluded that lowering the applied voltage to 100 kV resulted in a reduction in the dose absorbed by the patient. These results can contribute to optimizing scans of the chest computed tomography.

  18. Evaluation of toxicity and removal of color in textile effluent treated with electron beam; Avaliacao da toxicidade e remocao da cor de um efluente textil tratado com feixe de eletrons

    Energy Technology Data Exchange (ETDEWEB)

    Morais, Aline Viana de

    2015-07-01

    The textile industry is among the main activities Brazil, being relevant in number of jobs, quantity and diversity of products and mainly by the volume of water used in industrial processes and effluent generation. These effluents are complex mixtures which are characterized by the presence of dyes, surfactants, metal sequestering agents, salts and other potentially toxic chemicals for the aquatic biota. Considering the lack of adequate waste management to these treatments, new technologies are essential in highlighting the advanced oxidation processes such as ionizing radiation electron beam. This study includes the preparation of a standard textile effluent chemical laboratory and its treatment by electron beam from electron accelerator in order to reduce the toxicity and intense staining resulting from Cl. Blue 222 dye. The treatment caused a reduction in toxicity to exposed organisms with 34.55% efficiency for the Daphnia similis micro crustacean and 47.83% for Brachionus plicatilis rotifer at a dose of 2.5 kGy. The Vibrio fischeri bacteria obtained better results after treatment with a dose of 5 kGy showing 57.29% efficiency. Color reduction was greater than 90% at a dose of 2.5 kGy. This experiment has also carried out some preliminary tests on the sensitivity of the D. similis and V. fischeri organisms to exposure of some of the products used in this bleaching and dyeing and two water reuse simulations in new textile processing after the treating the effluent with electron beam. (author)

  19. Evaluation exposure to the ionizing radiation of workers during the operation of first Brazilian uranium mine; Avaliacao da exposicao de trabalhadores a radiacao ionizante durante a operacao da primeira mina de uranio do Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Wagner de S.; Oliveira, Sergio Q. de; Py Junior, Delcy de A.; Dantas, Marcelino V.A.; Silva, Ana Claudia A.; Garcia Filho, Oswaldo, E-mail: wspereira@inb.gov.b, E-mail: sergioquinet@inb.gov.b, E-mail: delcy@inb.gov.b, E-mail: marcelino@inb.gov.b, E-mail: anasilva@inb.gov.b, E-mail: ogarcia@inb.gov.b [Industrias Nucleares do Brasil (UTM/INB), Pocos de Caldas, MG (Brazil). Unidade de Tratamento de Minerios. Servico de Radioprotecao

    2011-10-26

    The production of uranium in Brazil initiated, in industrial scale, in the year of 1982, in the Miner-Industrial Complex at Pocos de Caldas, Minas Gerais, Brazil. This paper analysed the data of 13410 individual historic of dose, registered along the years of work, bay the radioprotection service of installation. Descriptive statistics and frequency histograms based on dose historic, and the annual distribution doses and the accumulated doses were evaluated during the functioning period of the CIPC, and his adequacy to the in force legislation at the time of it operation

  20. 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 stems of broccoli significant difference on the yellowing during storage. It is concluded that the processing of collard greens and broccoli butter by gamma radiation may be a viable alternative to the industry, since there was a reduction of the population of microorganisms, without changes in the sensory qualities and with minimum changes in the characteristics that confer antioxidant power. (author)

  1. Evaluation of parapharyngeal space by computerized tomography and magnetic resonance. Part 1: anatomy; O valor da tomografia computadorizada e da ressonancia magnetica na avaliacao do espaco parafaringeo. Parte 1: anatomia

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Ricardo Pires de; Rapoport, Abrao [Hospital Heliopolis, Sao Paulo, SP (Brazil)

    1994-01-01

    The authors, through a comprehensive review of the literature, intend to establish an anatomical concept of the parapharyngeal space and its surroundings spaces in the supra-hyoid neck, based on its division by the fascial planes. The correlation between the anatomically defined parapharyngeal space and the findings of the sectional imaging procedures (computed tomography and magnetic resonance) is established, evidencing clear anatomic-radiologic correspondence. (author) 44 refs., 2 figs.

  2. Evaluation of eco toxicity, biocide effectiveness and corrosiveness of fluid for pipelines hydro testing; Avaliacao da ecotoxicidade, eficiencia biocida e da corrosividade de fluidos para teste hidroestatico de dutos

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Cynthia A.; Veiga, Leticia F.; Penna, Monica O.; Souza, Leonardo S. [PETROBRAS, Rio de Janeiro, RJ (Brazil); Nascimento, Juliana R.; Oliveira, Fabio F.; Amigo, Alexandre A.; Chaves, Claudia [Fundacao Gorceix, Ouro Preto, MG (Brazil)

    2005-07-01

    Before the installation of subsea pipelines for draining the oil and gas production, the line need to be submitted to hydrostatic tests. In these, the lines are flooded with sea water and chemicals and pressurized to check the leakage occurrence. By the end of the test, the fluid needs to be discharged in-situ. Based on the environmental restrictions, this study began, and the three most important aspects in relation to the environmental risks had been evaluated: the toxicity, the biocide efficiency and the fluids' corrosiveness. By the partial results, it was observed that the fluids which had presented the best results in all studied aspects were the ones that contained the biocide THPS, combined with U.V. and a quaternary salt. In relation to the corrosion, it could be established that the studied fluids do not present impacts in internal corrosion, since during the test, the pipes are totally flooded with the fluid, remaining stamped and all the internal air having been removed. An important aspect is: even with concentrations below of the recommended ones for biocides, in order to guarantee lower environmental risks, by making use of alternative techniques (U.V.) and efficient biocide products, it is also possible to reach success in terms of biocide's efficiency. A regular monitoring procedure of the fulfilling fluid's quality is essential. (author)

  3. 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)

  4. 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 originated from the natural and anthropogenic sources. The principal component analysis (PCA) applied to the results showed six major components, where components 1 and 2 accounted for 52.9 % of the variance of the data. Enrichment factors (EF) calculated for the results of lichens from CUASO and a region considered unpolluted were EF> 1 for most elements, showing that these elements may be from anthropogenic sources. From the results obtained in this study can be concluded that the elements found in lichens from CUASO can be originated from sources such as resuspension of soil particles and anthropogenic emissions. (author)

  5. Stability evaluation of CNBr-Sepharose 4 B for using as solid matrix in immunoradiometric assay antibodies coupling; Avaliacao da estabilidade da CNBr-sepharose 4B para emprego como matriz solida no acoplamento de anticorpos especificos de ensaios imunorradiometricos

    Energy Technology Data Exchange (ETDEWEB)

    Haber, Esther Piltcher; Silva, Sandra Rosa da; Borghi, Vania Caira [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil); Wajchenberg, Bernardo Leo [Sao Paulo Univ., SP (Brazil). Faculdade de Medicina

    1995-12-31

    The present work verifies the stability of a CNBr-Sepharose 4 B product (Pharmacia) stored at our laboratory one year after its expire date in view of its application as solid phase antibodies in the development of an immunoradiometric assay for measurement of serum human proinsulin. From rabbit IgG antiserum previously purified and concentrated by ultrafiltration (Publication IPEN 294, 1990) the antibodies were isolated by affinity chromatography. Sheep antiserum anti-rabbit IgG were coupled to cyanogen bromide activated Sepharose 4 B and the rabbit IgG which were bound to the immunosorbent could be obtained by elution with stepwise pH gradient from pH 7.0 to pH 2.5. The complying efficiency of the sheep antiserum to this solid phase material was 97%. The elution profile obtained shows identify of the sample related to the antiserum anti-rabbit IgG by affinity chromatography. These results suggest that this CNBr-Sepharose 4 B lot can be used satisfactorily to attach antibodies for use in the two-site immunoradiometric assay. (author). 7 refs., 1 fig.

  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 the current studies on LCA of PEMFC. Several questions raised up on this issues have contributed in the development of a method of recuperating the PEMFC catalysts and, particularly, for its subsequent environmental evaluation. Among significant results are the importance of LCA, out lined as useful tool for perceiving the weight of environmental matters concerning the platinum and its subsidy strategies relating to the development, consolidation and to the innovation of PEMFC. (author)

  7. Assessment of {sup 222}Rn occupational exposure at IPEN nuclear materials storage site, SP, Brazil; Avaliacao da exposicao ocupacional ao {sup 222}Rn no galpao da Salvaguardas do IPEN, SP

    Energy Technology Data Exchange (ETDEWEB)

    Caccuri, Lilian Saueia

    2007-07-01

    In this study it was assessed the occupational exposure to {sup 222}Rn at IPEN, SP, Brazil, nuclear materials storage site through the committed effective dose received by workers exposed to this radionuclide. The radiation dose was calculated through the radon concentrations at nuclear materials storage site. Radon concentrations were determined by passive detection method with solid state nuclear detectors (SSNTD). The SSNTD used in this study was the polycarbonate Makrofol E; each detector is a small square plastic of 1 cm{sup 2}, placed into a diffusion chamber type KFK. It was monitored 14 points at nuclear materials storage site and one external point, over a period of 21 months, changing the detectors every three months, from December 2004 to September 2006. The {sup 222}Rn concentrations varied from 196 {+-} 9 and 2048 {+-} 81 Bq{center_dot}m{sup -3}. The committed effective dose due to radon inhalation at IPEN nuclear materials storage site was obtained from radon activity incorporated and dose conversion factor, according to International Commission on Radiological Protection procedures. The effective committed dose received by workers is below 20 mSv{center_dot}y{sup -1}. This value is suggested as an annual effective dose limit for occupational exposure by ICRP 60. (author)

  8. Social environmental and economic evaluation diagnosis through application of MADSA (Social and Environmental Evaluation Matrix) customization; Diagnostico de desempenho socioambiental e economico por meio da customizacao da MADSA (Matriz para Avaliacao de Desempenho Socioambiental)

    Energy Technology Data Exchange (ETDEWEB)

    Ziliotto, Marco Aurelio B.; Villa, Alessandra T.; Padilha, Simone L. Vieira; Canaverde, Patricia Margue [Instituto ECOPLAN, General Carneiro, PR (Brazil); Sanqueta, Carlos Roberto [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil)

    2004-07-01

    The present paper reports a social, environment and economic diagnosis in an oil and energy organization, in the enlargement of its plant. Attending to some previous requirements made by this company, the diagnosis was accomplished making use of an innovative evaluation tool called MADSA{sup R} (Social and Environmental Evaluation Matrix). Through the customization of this tool, it was possible to evaluate, systematically, the performance of the engaged companies hired by the organization to implement its enterprise, based on proposed actions in QSMS - Quality, Safety, Environment and Health. The performance evaluation was supported by the employees', the organization, its clients' and the local community perception. MADSA{sup R} methodology made it possible to measure the accomplished gain through proposed actions. The development of a performance indicator allowed the comparison between achieved results and accomplished investments. It was concluded that MADSA{sup R} provided subsidies to elaborate an action plan to improve the organization achievements, since it was able to represent the strategy of the organization, to guide and standardize actions, to identify and quantify points to be made better of. (author)

  9. 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)

  10. Evaluation of {sup 137}Cs mobility in soil profiles from the Pantanal region, Brazil; Avaliacao da mobilidade do {sup 137}Cs em perfis de solos da regiao do Pantanal

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Fernanda Leite da

    2013-07-01

    Radioactive pollutants can cause impact on the environmental quality of soils and pose a risk to human health. The release of radioactive materials through nuclear testing or nuclear accidents cause the deposition of radionuclides on the ground,· it may be leached by rain, transported to the sources of natural waters and absorbed by the soil fauna and flora, and thus enter the human food chain. Radioecological studies have shown that soils with low pH, low organic matter content and low fertility are more vulnerable to contamination by {sup 137}Cs, since the transfer to plants is high. In this study, we aimed to assess and map the vulnerability to contamination by {sup 137}Cs surface horizons of the soils from the Pantanal and propose mitigation measures adapted to the regional scenario to optimize radiological protection of agricultural areas. Therefore, selected soil profiles located in the municipality of Jaraguari, state of Mato Grosso do Sul, and applied the conceptual model developed by Picanco Jr (2012), which was used in the reference values of the factor of soil-plant transfer (FT) for {sup 137}Cs in corn, related soil variables (pH, CTC and exchangeable K) and relevance of parameters and variations of amplitudes for each value range of FT. The application of this conceptual model established to detect the vulnerability of soils to radioactive contamination generated maps vulnerability showing that the region is very heterogeneous as this criterion, showing low levels of vulnerability for most of the region and in some areas, extreme vulnerability. This result identified the Pantanal as one of the less vulnerable to the radioactive contamination, but the sparse areas of extreme vulnerability can lead to contamination of subsoil and a significant spread of contamination via groundwater. This conceptual model, which defines vulnerability classification, is a first step for the study and determination of a numerical index of vulnerability to {sup 137}Cs soil and can be used in the task of remediation in case of rural areas by accident and {sup 137}Cs contamination establishing geographic areas where we should prioritize treatment due to a greater vulnerability. (author)

  11. Evaluation of radiological protection and dose of skin entrance in paediatric dentistry examinations; Avaliacao da protecao radiologica e da dose de entrada na pele em exames de odontologia pediatrica

    Energy Technology Data Exchange (ETDEWEB)

    Khoury, Helen Jamil [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Energia Nuclear; Vasconcelos, Flavia Maria Nassar de [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil); Silveira, Marcia Maria Fonseca da [Universidade de Pernambuco (UPE), Recife, PE (Brazil). Fac. de Odontologia; Couto, Geraldo Bosco Lindoso [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Fac. de Odontopediatria; Brasileiro, Izabela Vanderley

    2005-07-01

    In this work the radiological protection conditions and dose at the entrance of pediatric patients undergoing dental intraoral radiographs were evaluated. The study was conducted in two clinics of the dentistry course at the Federal University of Pernambuco, Recife, PB, Brazil, equipped with conventional X-ray apparatus, with 60 and 70 kV. 254 exams of 113 patients between the ages of 3 to 12 years were evaluated. The skin entrance dose was estimated using TLD-100 thermoluminescent dosemeters. During the examination were also recorded information regarding the time of exposure, radiographic technique used, use of thyroid protectors and lead apron, angle and distance of the cone Locator to the patient's skin. The results showed that the input skin doses ranged from 0.3 mGy to 10mGy. The lead apron was used in 71% of exams while the thyroid shield was only used in 58% of the exams. The exposure times ranged from 0,5s to 1,5s. From the results it can be concluded that the radiological procedures are not optimized and that in some cases the patient dose is high.

  12. Evaluation of parapharyngeal space by computerized tomography and magnetic resonance. Part 2: tumours and pseudo tumours; O valor da tomografia computadorizada e da ressonancia magnetica na avaliacao do espaco parafaringeo. Parte 2: tumores e pseudotumores

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Ricardo Pires de; Rapoport, Abrao [Hospital Heliopolis, Sao Paulo, SP (Brazil)

    1994-01-01

    The tumors of the parapharyngeal space are a heterogeneous group of lesions not actually originating in the parapharyngeal space itself, fascially defined, but usually in the adjacent spaces, the mucosal pharyngeal space, masticatory space and carotid space. Centrally localized in the supra-hyoid neck, the parapharyngeal space can be used as a diagnostic key in the compartmental localization of these regional lesions, since one observes the pattern of dislocation of the fat content of the space by the lesions at computerized tomography or magnetic resonance. The authors reported 14 cases of parapharyngeal tumors analysed using this criteria, leading to 86% of correct compartmental localization. (author) 155 refs., 13 figs., 2 tabs.

  13. Evaluation of natural radioactivity in superficial and underground drinking water, from the Caetite region, BA; Avaliacao da radioatividade natural em aguas potaveis, de superficie e subterraneas da regiao de Caetite, BA

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Luciana Sousa

    2011-07-01

    Brazil has the seventh greatest geological uranium reserve in the world with approximately 310 thousand tons. The Lagoa Real Uranium Province, in the region of Caetite and Lagoa Real, situated in South Center Bahia, is considered the most important monomineralic province in Brazil. Urban population who lives in the uranium district in the cities of Caetite, Lagoa Real and Livramento de Nossa Senhora uses drinking water originated from public supply. In the rural area, characterized by frequent draughts, residents receive water from digged and drilled wells and from small dams and reservoirs, as well, which are supplied by the rains. This work determined the levels of total alpha and beta radioactivity and the uranium concentrations in several kinds of water consumed by urban and rural population from the Lagoa Real Uranium Province. Total {alpha} and {beta} activities were determined with a low-level gas flow proportional detector. The uranium concentrations were determined with an inductive coupled plasma-mass spectrometer (ICP-MS). The results obtained were confronted with the latest World Health Organization's recommendations from 2011, the ordinance number 2914 of December 12 2011 from the Health Ministry and CONAMA's resolutions. Natural radiation levels varied from 0,0041 {+-} 0,0004 Bq.L{sup -1} to 0,80 {+-} 0,04 Bq.L{sup -1} for total alpha activity and from 0,045 {+-} 0,003 to 3,00 {+-} 0,2 Bq.L{sup -1} for total beta activity. Having the WHO and the HM as parameter, just two underground water samples, one located in the city of Lagoa Real and the other in the city of Caetite presented total alpha concentration above the value of 0,5 Bq.L{sup -1} described in its recommendations, 0,80 {+-} 0,040 Bq.L{sup -1} and 0,57 {+-} 0,03 Bq.L{sup -1} respectively. For total beta three samples presented radioactivity levels above the 1 Bq.L{sup -1} limit recommended by the WHO and established by the Health Ministry; 3,00 {+-} 0,2 Bq.L{sup -1}; 1,63 {+-} 0,13 Bq.L{sup -1} and 1,19 {+-} 0,07 Bq.L{sup -1}., all of them situated in the Lagoa Real town. Two samples of underground water from Caetite presented uranium concentrations above the value of 15 {mu}g.L{sup -1} determined by CONAMA, 20,3 {+-} 0,3 {mu}g.L{sup -1} and 17,1{+-} 0,3 {mu}g.L{sup -1}. In Lagoa Real one sample presented uranium levels six times over the limit established by the Environment National Council 89,5 {+-} 1,5 {mu}g.L{sup -1}. In 2004 the World Health Organization established in its recommendations the 15 {mu}g.L{sup -1} limit as the maximum uranium concentration in drinking water. In 2011 the WHO increased that limit to 30 {mu}g.L{sup -1}. Taking into account the current WHO recommendations only the concentration of one water sample presented uranium levels above the recommended, 89,5 {+-} 1,5 {mu}g.L{sup -1} in Lagoa Real. (author)

  14. O PARADIGMA DA VERDADE QUE PERPASSA AS METAFÍSICAS CLÁSSICA E MODERNA E DETERMINA AS DECISÕES JUDICIAIS

    Directory of Open Access Journals (Sweden)

    Gabrielle Tesser Gugel

    2014-08-01

    Full Text Available O presente texto tem por objetivo a compreensão acerca de que modo o dualismo sujeito-objeto encontra-se presente nas decisões judiciais dos Tribunais. Demonstra-se que a filosofia da linguagem influencia a forma como as decisões são tomadas no Tribunal. Por isso objetiva-se abordar o pensamento desenvolvido na metafísica clássica e moderna. Na metafísica clássica a noção acerca da verdade encontrava-se nas coisas, ou seja, nos objetos, sendo de forte influência para a Escola da Exegese surgida na França e na Escola da Jurisprudência dos Conceitos elaborada da Alemanha. A ruptura ocorrida na metafísica moderna traz a filosofia da consciência e a noção de sujeito formulada por Descartes. O sujeito passa a ser o assujeitador das coisas, é nele que está a verdade, o conhecimento prévio. Sua influência está claramente presente na Escola da Jurisprudência dos Interesses. A metafísica moderna somente foi superada no campo da filosofia, com o giro linguístico. A metodologia utilizada será o método hermenêutico.

  15. La influencia católica en la configuración del sistema político y educativo nacional argentino a fines del siglo XIX

    Directory of Open Access Journals (Sweden)

    Oscar Daniel Duarte

    2014-05-01

    Full Text Available El presente artículo describe las diferentes corrientes de pensamiento que influenciaron en el proceso de conformación estatal argentino. Sobresalen entre ellas la línea liberal y la línea católica de fuerte influencia en la elite dirigente del país. A partir de allí realizamos un análisis sobre la orientación política tomada por el Estado y la influencia impelida por el catolicismo particularmente en el debate sobre la conformación del aparato educativo nacional. La conclusión a la que arribamos en este estudio explica el por qué del sometimiento político e ideológico al que se vio sujeto el Estado argentino respecto a la influencia del Vaticano.

  16. Influencia del microsite en la imagen de marca a través de experiencias significativas

    Directory of Open Access Journals (Sweden)

    Belinda de Frutos Torres

    2012-04-01

    Full Text Available Las empresas e instituciones, actualmente, son conscientes del potencial que ofrece internet como instrumento para mantener una relación activa con sus públicos de interés. Con este propósito diseñan estrategias de comunicación específicamente destinadas a que el usuario pueda establecer una relación interactiva con la marca. Una de las formas de estar presente en la red es a través del microsite que se perfilan como una solución para estrechar los lazos entre el usuario y la marca.El objetivo del estudio es valorar la influencia del microsite como herramienta de comunicación corporativa y su importancia en la construcción de la imagen de marca. Para ello se ha llevado a cabo un estudio empírico a partir de tres acciones de comunicación reales de tres marcas conocidas representativas de tres estrategias de comunicación. Las tres acciones se llevaron a cabo con microsites y fueron visitados y evaluados por una muestra de 41 personas. Los resultados muestran que la valoración global hacia el microsite puede explicarse en torno a tres dimensiones su grado de entretenimiento, su valor informativo y el agrado asociado. Se comprueba que la experiencia generada por el microsite es diferente dependiendo de la estrategia de comunicación utilizada y contribuye de forma distinta a explicar la actitud hacia la marca. Cada estrategia constituye una experiencia diferenciada para el usuario sin embargo la implicación del usuario con la categoría del producto obtiene un papel determinante en  la relación con la imagen de marca.

  17. Influencia educativa de los medios de comunicación social en la sociedad neoliberal

    Directory of Open Access Journals (Sweden)

    Julio VERA VILA

    2009-11-01

    Full Text Available RESUMEN: Este trabajo es una reflexión acerca de la forma en la que se articulan y operan los medios de comunicación en lo que se ha dado en llamar el neoliberalismo y cuál es, en ese contexto, su influencia educativa. Los medios de comunicación entendidos como conjunto de empresas que tienen por misión informar a las personas de lo que ocurre en el mundo, han jugado y juegan un importante papel social. Desde el punto de vista educativo, el análisis del mundo de la comunicación en el contexto neoliberal actual, invita a demandar mayores dosis de educación ciudadana. Ser ciudadanos autónomos y críticos en unos entornos persuasivos tan poderosos, con tal cantidad de información, exige potenciar los procesos educativos y una distribución más igualitaria de los recursos y dispositivos formativos disponibles.ABSTRACT: This work is a reflection about the form in which the media are articulated and the way they opérate in the neoliberalism and which is, in that context, its educational influence. The media understood as a group of companies that have for mission to inform people of what happens in the world, has played and they play an important social role. From the educational point of view, the analysis of the world of the communication in the neoliberal context, invites to demand more civic education. To be autonomous and critical citizens in such persuasive environments, with so many information, it demands to foster the educational processes and a more equitable distribution of the available formative resources.

  18. Una nueva ultraestructura de ópalo CT en silcretas. Posible indicador de influencia bacteriana

    Directory of Open Access Journals (Sweden)

    Bustillo, Mª A.

    1995-04-01

    Full Text Available Electron microscope observations of opaline silcretes found in the playa of a Miocene shallow lake reveal new opal CT microstructures. These microstructures are made up of fibres, filaments or rods, which are formed, in tum by coalesced microspheres or microhemispheres (0,1-0,2 µ diameter. They are up to 10 µ in length although larger ones could exist. They are straight, bent, wavy or even hairpin shaped. These microstructures comprise part of the opaline mass of the silcretes and are very similar to both neogenic opaline structures which are formed by bacterial intluence and to silicified biofilms. Therefore microbial mediation could exist in the genesis of this opal CT, although a possible inorganic origin by silicification of sepiolite is also considered.Un estudio mediante MEB de silcretas miocenas opalinas formadas por silicificación de playas en un ambiente de «playa-lake» pone de manifiesto la existencia de una nueva microestructura de ópalo CT. Esta microestructura denominada en general fibrosa, se manifiesta por la presencia de multitud de fibras, filamentos o varillas formadas por la alineación de microesferas o microhemisferas que presentan un diámetro entre 0,1 y 0,2 µ. Las fibras, filamentos o varillas tienen formas variables: rectas, curvadas, onduladas y «en horquilla», y presentan longitudes de hasta 10 µ, aunque podrían existir longitudes mayores. La disposición organizada de las microesferas en filamentos o fibras, constituyendo la masa general del ópalo, y su parecido con microestructuras opalinas que han sido formadas por influencia bacteriana, hacen considerar esta hipótesis, aunque no se puede descartar totalmente un origen inorgánico por silicificación de sepiolita.

  19. Influencia de los tiempos de respuesta prehospitalarios en la supervivencia de los pacientes politraumatizados en Navarra

    Directory of Open Access Journals (Sweden)

    B. Ali Ali

    2015-08-01

    Full Text Available La relación entre los tiempos de respuesta y la mortalidad de los pacientes politraumatizados en la denominada "hora de oro" sigue siendo tema de debate. El objetivo del presente estudio es determinar las variables relacionadas con la mortalidad en dichos pacientes y la influencia de los tiempos de respuesta de los Servicios Médicos de Emergencia en dicha mortalidad. Para ello se analizaron los datos del Registro "Major Trauma de Navarra" (cohorte retrospectiva de pacientes politraumatizados atendidos por el sistema sanitario de Navarra durante los cuatro años comprendidos entre 2010 y 2013. De los 217 casos de trauma disponibles para el análisis, fallecieron 42 (19%. En el análisis multivariante no se encontró asociación significativa entre los diferentes tiempos de respuesta y la mortalidad: llegada a la escena (odds ratio (OR 1,0; intervalo de confianza al 95% (IC de 0,99 a 1,01, en el escenario (OR 1,00; IC 95% de 0,98 a 1,02 y tiempo total (OR 1,00; IC 95% de 0,99 a 1,01. Las variables que influyen en la mortalidad son la edad del paciente y la gravedad de las lesiones medidas por el Triage-Revised Trauma Score (T-RTS prehospitalario y el New Injury Severity Score (NISS. La mortalidad de los pacientes politraumatizados atendidos por el sistema de emergencias en nuestra región está influida por la edad, y por la intensidad de la agresión sufrida determinada por el T-RTS prehospitalario y por el NISS. Los tiempos de respuesta prehospitalarios no influyen significativamente.

  20. Influencia del espesor de adhesivo de poliuretano en la resistencia de uniones sometidas a cortadura

    Directory of Open Access Journals (Sweden)

    García-Ledesma, R.

    2005-02-01

    Full Text Available The thickness of adhesive layers in metallic bonded joints has direct influence in the performance and mechanical behaviour of these joints. The aim of this study was to analyse the strength and strain properties of steel overlap joints bonded with polyurethane adhesive layers with different thickness. The results show that the strength is maximum when the thickness of the adhesive layer is very thin, 0.1 mm. When the thickness growth to 1 mm the strength goes down rapidly. For layers from 1 to 1.5 mm the strength goes down slower and from 1.5 to 4 mm the strength is nearly constant. In other hand, the joint strain increase uniformly with adhesive layer thickness growth.

    El espesor de la capa de adhesivo en las uniones por adhesión de materiales metálicos, tiene una influencia notable en el comportamiento y las propiedades mecánicas de dichas uniones. El objeto de este trabajo fue analizar las propiedades de resistencia y desplazamiento, presentadas por uniones a solape de acero, unidas con capas de diferentes espesores de un adhesivo de poliuretano. Los resultados obtenidos muestran que la resistencia mecánica es máxima para capas de adhesivo de espesor muy delgado: 0,1 mm. Cuando el espesor crece de 0,1 hasta 1 mm la resistencia disminuye rápidamente. Para capas desde 1 hasta 1,5 mm la resistencia disminuye más lentamente y, a partir de 1,5 mm, la resistencia permanece prácticamente constante. Por otro lado, los desplazamientos de la unión aumentan uniformemente a medida que crece el espesor de la capa de adhesivo.

  1. Influencia de las relaciones familiares sobre el aborto provocado en adolescentes

    Directory of Open Access Journals (Sweden)

    Jully Calderón S

    2006-10-01

    Full Text Available Objetivos: Determinar la influencia de las relaciones familiares sobre el aborto provocado en adolescentes. Materiales y métodos: Estudio de casos y controles; los casos fueron 58 adolescentes con aborto provocado que acudieron al Hospital Regional Docente de Trujillo, por hemorragia, y el grupo control fueron 58 adolescentes pareadas según edad de la paciente, edad gestacional y nivel socioeconómico, que continuaron con el embarazo y acudieron al control prenatal en el mismo hospital. Resultados: Sólo 20% de los casos comunicó a sus padres sobre el embarazo, a diferencia del 62% de los controles (p<0,001, la falta de confianza hacia los padres estuvo asociada con el aborto provocado (OR: 4,5; IC95: 1,7-12,3, no se encontró asociación con el antecedente familiar de aborto o con la violencia intrafamiliar. Las reacciones negativas (violencia, retirar a la afectada de los estudios o hacerla trabajar de los padres ante la noticia del aborto fueron más frecuentes en el grupo con aborto (OR: 14,1; IC95: 3,9-50,9; así como la presentación de molestias y discusiones entre los miembros de las familias de los casos (OR: 23,9; IC95: 12,4-208,7. Conclusión: La comunicación y el nivel de confianza con los padres, así como reacciones negativas ante la noticia del embarazo están fuertemente relacionados con el aborto provocado, en las adolescentes de Trujillo.

  2. Estudio teórico sobre la influencia del solvente en la estructura y dinámica del ADN

    OpenAIRE

    Rueda Borrego, Manuel

    2006-01-01

    [spa] Esta tesis se centra en el estudio de la influencia del solvente en la estructura y dinámica del ADN mediante técnicas de simulación por ordenador. En la misma se han realizado dos bloques diferenciados, cuyos objetivos concretos serían: 1- El estudio de una secuencia de ADN en solución con diferentes fuerzas iónicas con el objetivo de racionalizar cómo los contraiones modulan las propiedades estructurales y dinámicas de la molécula. 2- El estudio de diversos ácidos nucleicos canónicos ...

  3. Influencia del contexto de alto rendimiento deportivo en los vínculos sociafectivos de jugadoras de baloncesto

    OpenAIRE

    Díez Flórez, Gloria Mª; Requena Hernández, Mª del Carmen

    2012-01-01

    El deporte de equipo de alto rendimiento se caracteriza por una futura limitación temporal, la intensidad de contacto físico y social y la temprana edad de inicio. El objetivo de esta investigación es comprobar la influencia de dichas variables en la construcción socioafectiva de jugadoras profesionales en el contexto familiar y deportivo. La muestra se compone de 64 jugadoras profesionales en activo con edades comprendidas entre los 18 y 35 años. El instrumento recoge carac...

  4. Estudio termográfico de la influencia de la temperatura en los módulos fotovoltaicos

    OpenAIRE

    Pérez Regalado, María José

    2010-01-01

    El principal objetivo de este Proyecto Fin de Carrera se basa en el estudio de la influencia que ejerce la temperatura en los paneles solares fotovoltaicos. La temperatura es un excelente indicador del estado de una instalación, y los cambios en la misma siempre suelen ir precedidos de la variación de este parámetro. Su seguimiento puede ser un factor de éxito en el mantenimiento de una planta solar puesto que puede tener efectos muy negativos sobre la eficiencia de esta. En el presente proye...

  5. Aportaciones a la crippreservación del esperma de gato doméstico: influencia de las soluciones diluyoconservadoras

    OpenAIRE

    Jiménez Vaquero, Emilia M.

    2013-01-01

    Los estudios que se abordan en esta tesis van encaminados a aportar mejoras en el ámbito de la criopreservación del esperma de epidídimo de gato doméstico. Se estudió la influencia del anestésico empleado durante la orquiectomía. Para ello, diversas agentes o sustancias anestésicas como pentobarbital, ketamina e isofluorano fueron comparadas. Los resultados demostraron que el isofluorano es el anestésico de elección ya que mostró los mejores resultados de motilidad a la desc...

  6. Influencia del tensioactivo aniónico (LAS) sobre la actividad de la microbiota de los lodos activos

    OpenAIRE

    Coello Oviedo, Ma. Dolores; Sales Márquez, Diego; Quiroga Alonso, José María

    1998-01-01

    En el presente trabajo se estudia la influencia que ejerce el tensioactivo aniónico lineal alquil benceno sulfonato sódico, L.A.S., sobre la microbiota que existe en una unidad de lodos activos a escala de laboratorio de una Estación Depuradora de Aguas Residuales. Para ello, se han utilizado tanto los procedimientos tradicionales de control de dichas unidades (medida de sólidos volátiles en suspensión y demanda química de oxígeno) como técnicas específicas de medida de la actividad bacterian...

  7. Influencia del discurso hegemónico del desarrollo en los conflictos identitarios de género y nacionalidad

    OpenAIRE

    Saranova de Martín, Inmaculada

    2014-01-01

    En el actual contexto de crisis financiera internacional, el discurso hegemónico del desarrollo (vinculado a las teorías clásicas economicistas) parece estar mutando hacia nuevos horizontes. Sin embargo, el devenir de la actualidad no apunta a una transformación de los preceptos básicos de dicho discurso, sino más bien a una reafirmación del mismo en un nuevo contexto socioeconómico mundial. La presente investigación analiza la influencia del discurso hegemónico del desarrollo en lo relaciona...

  8. Influencia de los procesos de depuración sobre la toxicidad de las aguas residuales textiles.

    OpenAIRE

    Crespi Rosell, Martin; Vilaseca i Vallvé, Ma. Mercè (Maria Mercè)

    1983-01-01

    La toxicidad de algunos productos utilizados en los procesos de tintura y acabado de los artículos textiles es muy elevada. En este trabajo se determina la toxicidad frente a la Dafnia Magna de algunos productos químicos utilizados en la Industria Textil. También se estudia la influencia de los procesos de depuración sobre la toxicidad de las aguas residuales textiles. La toxicité de quelques produits utilisés dans les processus de teinture et d'ennoblissement des articles textiles est ...

  9. Influencia del tempo de la música en las emociones / influence of music tempo on emotion

    OpenAIRE

    Caballero Meneses, Jonathan Azael; Ménez Díaz, Marina

    2010-01-01

    Se sabe que la música puede influir en dos componentes de las emociones: el arousal y la valencia. En particular, se ha reportado que el tempo o rapidez de la música está directamente relacionado con el arousal, aunque su relación con la valencia o medida de afecto no es aún clara. En este trabajo se analizó la influencia del tempo en ambos componentes mediante la exposición de 24 estudiantes de licenciatura a treinta extractos musicales de distinto tempo. Además se evaluó la posible modulaci...

  10. Influencia de las Interacciones Sociales en el Rendimiento Académico. Aproximación Bibliográfica

    OpenAIRE

    García-Séiquer, Mercedes

    2013-01-01

    En el presente trabajo se ha realizado un estudio sobre la influencia de los procesos de socialización y las interacciones sociales sobre el rendimiento académico. Se ofrece una amplia visión de diferentes estudios que muestran cómo la presencia de habilidades sociales exitosas beneficia las relaciones personales, fomentan el bienestar emocional, el autoconcepto, las expectativas de logro, el clima social y el rendimiento en general de la persona. Este trabajo plasma cómo la disposición de un...

  11. Influencia de la autoconfianza y el perfil motivacional en el “flujo” en matemáticas

    OpenAIRE

    Berenguel, E.; Gil, F.; Montoro, A.B.; Moreno, M.F.

    2015-01-01

    Varios autores consideran que la motivación y el afecto son fundamentales en el aprendizaje de matemáticas, por su influencia en el rendimiento académico de los estudiantes y en su elección de actividades matemáticas. El flujo está asociado a la motivación intrínseca, y se produce cuando los sujetos experimentan alta concentración y disfrute con la actividad que están realizando. La variable afectiva autoconfianza es la creencia sobre la propia competencia matemática. El perfil motivacional s...

  12. Evaluación de la influencia en el desarrollo infantil de un proyecto de educación musical

    OpenAIRE

    Casas Lloret, Jara

    2015-01-01

    Esta investigación pretende determinar si hay influencias entre un proyecto de Educación Musical Infantil y el desarrollo integral de los niños/as que participan en el mismo, siguiendo el modelo de inteligencias múltiples de Gardner. Se evalúan niños/as entre 3 y 7 años de 7 colegios de Sevilla. Se hace un recorrido por el desarrollo humano, viendo sus diferentes dimensiones, centrándonos posteriormente en el desarrollo emocional. Se revisa la legislación actual para ver qué base teórica tien...

  13. El cine de Fritz Lang. Influencia de los mitos y arquetipos en su filmografía

    OpenAIRE

    LÓPEZ HERREROS, ANDRÉS

    2013-01-01

    El siguiente proyecto presenta un estudio personalizado de la obra cinematográfica del cineasta austríaco Fritz Lang para analizar sus tendencias y vincular los arquetipos a sus películas, principalmente las ideas planteadas por los psicólogos Segmund Freud y Carl Gustav Jung referente a las ideas primarias y secundarias. Para ello se muestra la influencia de la mitología en su narrativa cinematográfica, la presencia de arquetipos y elementos propios del subconsciente colectivo en su cine así...

  14. Trastornos de la personalidad: influencia sobre la conducta delictiva y repercusiones forenses en la jurisdicción penal

    OpenAIRE

    González Guerrero, Laura

    2011-01-01

    Los trastornos de la personalidad representan exacerbaciones desadaptativas e inflexibles de los rasgos individuales, que tienen su reflejo en la cognición, emoción, motivación, relaciones y conductas de los individuos que los padecen. El principal objetivo del estudio desarrollado ha sido alcanzar un mayor conocimiento sobre cada uno de los trastornos específicos de la personalidad en el contexto jurídico penal, especialmente su influencia diferencial sobre la conducta delictiva. Para ello s...

  15. Efecto de la altura de poda en Leucaena leucocephala y su influencia en el rebrote y rendimiento de Panicum maximum

    OpenAIRE

    H. M. Bacab; F. J. Solorio; S. B. Solorio

    2012-01-01

    Una de las prácticas importantes de manejo en los sistemas de Leucaena leucocephala asociada con pastos tropicales, como Panicum maximum, es la poda; en la actualidad se continúan los estudios para determinar los efectos de esta práctica en el componente arbóreo y herbáceo. Por todo ello, en el presente trabajo se evaluó el efecto de tres alturas de poda en Leucaena leucocephala cv. Cunningham y su influencia en la pastura asociada (Panicum maximum cv. Tanzania). El estudio se realizó en la é...

  16. Inteligencia emocional y su influencia en el clima organizacional en los niveles gerenciales medios de las PYMES

    OpenAIRE

    Cira de Pelekais; Angel Nava; Luis Tirado

    2006-01-01

    El propósito fue determinar la influencia de la Inteligencia Emocional sobre Clima Organizacional en los niveles gerenciales medios de las PYMES. La investigación fue caracterizada bajo un enfoque descriptivo explicativo, con un diseño no experimental transeccional. Como unidades de análisis fueron tomadas las PYMES adscritas a la cámara de Industria y Comercio de Cabimas, totalizando 100 empresas activas. Para la recolección de la información se utilizó un cuestionario autoadministrado, con ...

  17. Influencia de la estructura de los aerosoles de combustión sobre el cambio climático

    OpenAIRE

    Coz Diego, Esther

    2014-01-01

    Influencia de la estructura de los aerosoles de combustión sobre el cambio climático Según las estimaciones sobre el calentamiento global publicadas en el último informe del Panel Intergubernamental de Expertos de Naciones Unidas (IPCC, 2007), la cuantificación del efecto de los aerosoles presenta una de las mayores incertidumbres frente a otros componentes del forzamiento radiativo, por lo que representan en la actualidad el mayor desafío para la comunidad científica centrada en la inves...

  18. Influencia de la fracción fina reciclada en las propiedades del hormigón reciclado

    OpenAIRE

    Blanco Gómez, Alejandro

    2014-01-01

    Mediante este trabajo se pretende estudiar la influencia de la arena reciclada en el hormigón reciclado y así determinar si como se cree, la arena reciclada tiene efectos negativos sobre el hormigón y de ahí que sea un material que se rechace para su uso constructivo. Para ello se ha decidido estudiar un caso concreto. El hormigón reciclado que se ha decidido estudiar es el fabricado por la empresa Cañet i Xirgú, con el que fabrican piezas modulares para muros de gravedad. Por una...

  19. Estudio sobre la influencia de la satisfacción en el trabajo sobre la accidentabilidad laboral

    OpenAIRE

    Talavera Centeno, Marilena

    2015-01-01

    La accidentabilidad laboral es un problema actual en nuestras sociedades industrializadas y desde hace tiempo se busca controlar aquellos factores que originan los riesgos en los lugares de trabajo. Son muchas las teorías que abordan la causalidad de los accidentes labores. Entre ellas están aquellas que identifican el factor humano como corresponsable de dichos accidentes. Sin embargo, existen otras causas exógenas no siempre bien estudiadas, como es el caso de la influencia de aquellas vari...

  20. Los mapas conceptuales y su influencia en lo afectivo-valorativo del estudiante para aprender biología

    OpenAIRE

    Acosta, Savier; Acosta, Ramón

    2010-01-01

    El objetivo de esta investigación fue identificar la influencia de los mapas conceptuales en lo afectivo-valorativo del estudiante para aprender Biología. Las teorías que sirvieron de apoyo las fueron Díaz y Hernández (2007), Novak (1998). La investigación se realizó en la Unidad Educativa José Antonio Almarza; fue de tipo experimental con un diseño cuasi-experimental. La población estuvo conformada por 468 estudiantes, de donde se seleccionó una muestra de 68 estudiantes (33 del grupo contro...

  1. Análisis de la influencia del líbero en diferentes fases del juego en voleibol

    OpenAIRE

    Rentero, L.; João, P. V.; M. P. Moreno

    2015-01-01

    El objetivo del estudio fue analizar la participación y la influencia del jugador líbero en la fase de ataque y en la fase de defensa en voleibol masculino de alto nivel. La muestra de estudio estuvo compuesta por 1101 acciones de juego de recepción y defensa, de los cuatro equipos masculinos mejor clasificados en los JJOO de Pekin 2008. Las variables consideradas en el estudio fueron: clasificación del equipo, jugador receptor/defensa, zona de recepción/defensa, eficacia de recepción/defensa...

  2. Análisis de la influencia de la evaluación del rendimiento en jugadores de un equipo de fútbol

    OpenAIRE

    González Campos, Gloria; Campos Mesa, María del Carmen; Romero Granados, Santiago

    2014-01-01

    El objetivo del presente estudio es analizar la influencia de la evaluación del rendimiento que los jugadores de un equipo de fútbol realizan sobre sí mismos o sobre las evaluaciones realizadas por personas externas a ellos. Se estudia, si existe influencia sobre el rendimiento deportivo, y en este caso, se analiza cómo afecta, quienes son los agentes influyentes y cuáles son las evaluaciones que determinan afectación sobre el rendimiento del deportista. Para ello, se ha utilizado el...

  3. Consideraciones generales acerca de la influencia de la Teoría de la Evolución sobre el psicoanálisis freudiano

    OpenAIRE

    Abal, Mauricio

    2007-01-01

    El Psicoanálisis, tal como fue concebido por Sigmund Freud, no ha sido ajeno a la influencia que Charles Darwin y su Teoría de la Evolución de las Especies han ejercido en los distintos desarrollos de la psicología contemporánea. Influencia de carácter general y dispar pero que en nuestro recorrido particular permite no sólo ubicar a la teoría freudiana en relación a lo que podría considerarse como una de sus fuentes, sino, y sobre todo, restituir los sentidos y las condiciones de algunos de ...

  4. INFLUENCIA DE LA LATERALIDAD Y MOTRICIDAD EN LA ESCRITURA EN NIÑOS DE 2º DE EDUCACIÓN PRIMARIA. PROGRAMA DE INTERVENCIÓN.

    OpenAIRE

    Rosario-Ferández, María Dolores

    2012-01-01

    En el presente trabajo se estudia la influencia que ejerce la lateralidad y motricidad en la escritura en niños de 2º de Educación Primaria. Para el estudio se realizaron pruebas de lateralidad, motricidad gruesa y escritura a una muestra de 37 alumnos de un Colegio Público. El objetivo de esta investigación fue comprobar cómo la lateralidad y motricidad tienen una gran influencia en la escritura y el grado de correlación que existe entre los diferentes patrones motrices y la escritura....

  5. Liderazgo estudiantil en las escuelas secundarias: La influencia del contexto escolar en las percepciones de liderazgo de las mujeres jóvenes

    OpenAIRE

    McNae, Rachel

    2014-01-01

    La influencia del contexto escolar en la práctica del liderazgo se está convirtiendo en un área muy documentada en el campo del liderazgo educativo. Sin embargo, gran parte de la investigación en este creciente cuerpo de literatura se centra la práctica de liderazgo de los adultos. Este artículo examina la influencia del contexto de la escuela secundaria en las creencias y concepciones de liderazgo de las mujeres jóvenes. Se realizó un estudio cualitativo de investigación-acción colaborativa ...

  6. Un capítulo de la influencia francesa en la medicina peruana: Ernesto Odriozola y la Enfermedad de Carrión

    OpenAIRE

    Cueto, Marcos

    2014-01-01

    Durante el cambio del siglo XIX al XX, la medicina clínica francesa y la geografía médica europea tuvieron una fuerte, y poco estudiada, influencia entre los médicos peruanos. Los objetivos de este artículo son analizar un evento importante de esta influencia y resaltar factores locales en la recepción de la misma, como el nacionalismo y la búsqueda de visibilidad académica internacional publicando trabajos en francés. Los médicos peruanos enfatizaron las características únicas del medio ambi...

  7. Creación, crecimiento y expansión internacional de las nuevas empresas: influencia del emprendedor y del equipo de emprendedores

    OpenAIRE

    Vos Saz, Antonio

    2013-01-01

    El objetivo general de la presente investigación consiste en estudiar la creación, el crecimiento y la expansión internacional de las nuevas empresas. Para ello, nuestra investigación profundiza en tres aspectos clave: la contribución de los equipos de emprendedores a la creación de empresas; la influencia de las relaciones familiares en estos equipos de emprendedores sobre las intenciones de crecimiento; y la influencia de las características individuales de los emprendedores en ...

  8. El factor internacional en la transición española: la influencia del contexto internacional y el papel de las potencias centrales

    OpenAIRE

    Juan Carlos PEREIRA CASTAÑARES

    2010-01-01

    RESUMEN: La transición española hacia la democracia ha sido objeto de numerosos estudios; sin embargo, en la mayoría de los casos la transición se ha analizado desde el punto de vista interno o de los protagonistas nacionales. En nuestra investigación analizamos, por el contrario, la influencia del factor internacional en ese proceso de transición. Entendemos el factor internacional desde dos perspectivas: la incidencia de este factor hacia el interior, es decir, la influencia del contexto in...

  9. O resgate da epistemologia

    OpenAIRE

    João Arriscado Nunes

    2012-01-01

    Ao longo das três últimas décadas, o projecto da epistemologia passou por um processo de crítica e de transformação, marcado, sucessivamente, pela transferência da soberania epistémica para o “social”, pela redescoberta da ontologia e pela atenção à normatividade constitutiva e às implicações políticas do conhecimento, chegando mesmo a ser postulado o abandono da epistemologia como projecto filosófico. Em contraponto a esse processo, foi ganhando contornos a proposta de uma outra epistemologi...

  10. Influência da suplementação aguda e crônica de creatina sobre as concentrações sanguíneas de glicose e lactato de ratos Wistar Influencia de la suplementación aguda y crónica de creatina sobre las concentraciones sanguíneas de glicosis y lactato en ratones Wistar Influence of the short and long term supplementation of creatine on the plasmatic concentrations of glucose and lactate in Wistar rats

    Directory of Open Access Journals (Sweden)

    Renato Aparecido Souza

    2006-12-01

    Full Text Available Estudos recentes sugerem que a suplementação de creatina pode interferir com a captação de glicose e a produção de lactato durante a atividade física. O objetivo deste estudo foi investigar os efeitos da suplementação aguda (5g.kg¹ durante uma semana e crônica (1g.kg¹ durante oito semanas de creatina sobre as concentrações sanguíneas de glicose e lactato de ratos sedentários e exercitados (natação a 80% da carga máxima tolerada. Setenta e dois ratos Wistar machos (240 ± 10g foram utilizados e divididos igualmente em quatro grupos experimentais (n = 18: CON - ratos sedentários não suplementados; NAT - ratos exercitados não suplementados; CRE - ratos sedentários e suplementados; CRE + NAT - ratos exercitados e suplementados. As amostras sanguíneas foram obtidas antes e após o teste de determinação da carga máxima realizado semanalmente durante todo o experimento. Antes do teste de carga máxima, com exceção do grupo CRE-NAT (3-5 semanas, que apresentou concentrações plasmáticas de glicose inferiores em relação os demais grupos, todos os outros resultados foram semelhantes entre os grupos experimentais. Após o teste de carga máxima todos os grupos experimentais apresentaram redução das concentrações plasmáticas de glicose e aumento das concentrações plasmáticas de lactato. Contudo, em relação à glicose, esta redução foi significativamente (p Estudios recientes sugieren que la suplementación de creatina puede interferir con la captación de glicosis y la producción de lactato durante la actividad física. El objetivo de este estudio ha sido el de investigar los efectos de la suplementación aguda (5g.kg¹ durante 1 semana y crónica (1g.kg¹ durante 8 semanas de creatina sobre las concentraciones sanguíneas de glicosis y lactato en ratones sedentarios y ejercitados (natación a 80% de carga máxima tolerada. Setenta y dos ratones Wistar machos (240 ± 10g fueron utilizados y divididos igualmente

  11. A comunicação do enfermeiro cirúrgico na orientação do paciente: a influência cultural La comunicación del enfermero quirúrgico en la orientación del paciente: la influencia cultural Communication of nurses in surgical units in the orientation of patients: cultural influence

    Directory of Open Access Journals (Sweden)

    Márcia Maria Fontão Zago

    1997-10-01

    Full Text Available Este estudo teve como objetivo descrever a influência da cultura na interação verbal do enfermeiro cirúrgico, na orientação do paciente. Sob o enfoque metodológico da etnografia, os autores descrevem as características da interação verbal relacionadas com o conhecimento, as crenças, os valores, os padrões e a organização do trabalho, no contexto cultural.Este estudio tubo como objetivo describir la influencia de la cultura en la interacción verbal del enfermero quirúrgico en la orientación del paciente. Utilizando la etnografía como enfoque metodológico, los autores describen las características de la interacción verbal relacionadas con el conocimiento, las creencias, los valores, los patrones y la organización del trabajo, en el contexto cultural.The aim of this study was to describe the influence of culture on the verbal interactions of the surgical nurse in the orientation of patients. On the basis of ethnography, authors describe the characteristics of the verbal interaction related to knowledge, beliefs, values, pattterns and work organization, in the cultural context.

  12. Estudo comparativo de procedimentos experimentais e computacionais para cálculo da lipofilia molecular

    OpenAIRE

    Clemente, Gonçalo

    2011-01-01

    Introdução – A lipofilia é uma das propriedades físico-químicas que mais influencia a capacidade de uma molécula se movimentar através de compartimentos biológicos. O coeficiente de partição octanol/água (log P) permite, assim, obter uma estimativa da absorção dos fármacos no organismo. A existência de métodos indirectos para um cálculo rápido do log P pode revelar-se de grande importância na análise de listas de compostos com potencial acção farmacológica, reduzindo-as àqueles que se prev...

  13. O efeito da música ambiente no comportamento de clientes : o caso dos restaurantes

    OpenAIRE

    Geraldes, Maria Inês Conde Barroso

    2012-01-01

    Mestrado em Marketing No marketing de serviços, a forma como o ambiente de serviço afecta o estado de espírito do cliente, provoca um comportamento de afastamento ou aproximação. Pode dizer-se que esta é uma área ainda com muito por explorar, pois os estudos académicos tanto revelam resultados similares entre si, como resultados que por vezes se opõem. A presente investigação visa explorar de que forma o estímulo música, mais concretamente o tempo da música, influencia o tempo de permanênc...

  14. Influencia de Gregorio de Nisa sobre Juan Escoto Eriúgena: Aproximación a partir del Periphyseon

    Directory of Open Access Journals (Sweden)

    José Antonio Pachas

    2004-01-01

    Full Text Available A partir de los cinco libros del Periphyseon el autor intenta un acercamiento entre el pensamiento de Juan Escoto Eriúgena y Gregorio de Nisa, buscando sobre todo las principales influencias del segundo sobre el primero. Encuentra una plataforma de amplia base común entre ambos pensadores, marcada principalmente por un tipo de pensamiento circular según el esquema: procesión y retorno. Sin embargo, es notoria la influencia del Niseno sobre el Carolingio, principalmente cuando se trata de plantear la visión del hombre con respecto a Dios, donde Juan Escoto muestra conocer y seguir el Op hom de GregorioThis article attempts to identify the common aspects of the thought of John Scotus and Gregory of Nyssa. Starting from the five books of the Periphyseon, the author traces Gregory's main influences over Scotus. He identifies a wide common platform between both scholars, highlighted mainly by a kind of circular thought according to the schema: procession and return. However, the Nyssean influence of over the Carolingian is notorious, especially when it comes to the vision of Man with regards to God, in which John Scotus shows good understanding and adhesion to Gregory's Op hom

  15. Influencia personal de los candidatos y competencia espacial en las elecciones presidenciales venezolanas de 2006 a 2013

    Directory of Open Access Journals (Sweden)

    Julen Berasaluce Isa

    2016-10-01

    Full Text Available En la presente investigación se justifica la construcción de un modelo de competencia espacial para las elecciones presidenciales venezolanas con base en el número efectivo de partidos y los índices de polarización ponderada y escalar. El modelo presentado permite construir una clasificación de la influencia personalista de los candidatos, como resto no explicado por una competencia ideológica espacial. Además de clasificar a los candidatos de las tres últimas elecciones presidenciales por su influencia personal, se ofrecen previsiones para futuros comicios tomando como base el cambio de la distribución ideológica. Para la construcción del modelo, se consideran los supuestos de voto ideológico simétrico y una sola dimensión. / This research project presents a spatial competition model for Venezuelan presidential elections based on the effective number of parties and weighted and scalar polarization indices. The model makes it possible to construct a classification of candidates’ influence based on personality as an remainder unexplained by spatial ideological competition. In addition to classifying the candidates in the last three presidential elections by their personal influence, the authors offer predictions for future balloting based on change in ideological distribution. Suppositions of symmetrical ideological votes and a single dimension were used to build the model.

  16. Influencia del impuesto hotelero en la red de promoción turística en la capital mexicana

    Directory of Open Access Journals (Sweden)

    Tomás Cuevas Contreras

    2015-01-01

    Full Text Available El presente documento examina la aplicación del impuesto hotelero en la pro-moción del turismo en la capital mexicana, considerando su gestión a través del Fondo Mixto de Promoción Turística de la Ciudad de México mediante la exploración relacional de los actores involucrados. La metodología considera trabajo de gabinete, así como la aproximación cualicuantitativa al fenómeno de estudio. Para ello se exploran diversos enfoques de gestión del gravamen, sus beneficios en la promoción y el soporte al branding del destino. El análisis es mediante visualización de las redes que muestran la interrelación de factores de influencia entre los actores e interesados en la dinámica turística, represen-tando la perspectiva de reticularidad con respecto a la tributación extraordi-naria e influencia en el fomento de la imagen.

  17. Eficacia de tácticas de influencia en la intención de conducta proambiental

    Directory of Open Access Journals (Sweden)

    Idaly Barreto

    2014-01-01

    Full Text Available En este trabajo se analiza la eficacia de las tácticas de influencia social basadas en principios psicológicos (compromiso/coherencia y culturales (identitario, conspicuo, estatutario para el favorecimiento de la intención de conducta proambiental. Se realizó un estudio experimental mediante un diseño factorial 2×5 donde las variables fueron el tipo de táctica de influencia discursiva manipulada en cada grupo experimental y el género. La variable dependiente midió la intención de conducta proambiental relacionada con la reducción del desperdicio, gasto desmedido o innecesario de agua, gas y electricidad en el hogar. Se comprobó la eficacia de las tácticas para el favorecimiento de la intención de comportamiento proambiental y se encontraron diferencias significativas entre hombres y mujeres en los mensajes basados en los principios de coherencia y consumo conspicuo.

  18. Inteligencia emocional y su influencia en el clima organizacional en los niveles gerenciales medios de las PYMES

    Directory of Open Access Journals (Sweden)

    Cira de Pelekais

    2006-05-01

    Full Text Available El propósito fue determinar la influencia de la Inteligencia Emocional sobre Clima Organizacional en los niveles gerenciales medios de las PYMES. La investigación fue caracterizada bajo un enfoque descriptivo explicativo, con un diseño no experimental transeccional. Como unidades de análisis fueron tomadas las PYMES adscritas a la cámara de Industria y Comercio de Cabimas, totalizando 100 empresas activas. Para la recolección de la información se utilizó un cuestionario autoadministrado, con escala tipo Likert. Los resultados arrojaron que los gerentes de nivel medio tienen bien identificadas sus emociones y sentimientos, igualmente tienen una excelente percepción del clima organizacional, sin embargo existen ciertos factores de la Inteligencia Emocional que afectan directamente sobre el Clima Organizacional, tal es el caso de la motivación y las habilidades sociales, los cuales no se encuentran en los niveles óptimos de actuación, afectando directamente los niveles de responsabilidad y manejo de conflictos, permitiendo así referenciar que si existe una muy alta influencia de los factores de la Inteligencia Emocional sobre el Clima Organizacional.

  19. A Governança Corporativa Influencia a Eficiência das Empresas Brasileiras?

    Directory of Open Access Journals (Sweden)

    Igor Bernardi Sonza

    2014-05-01

    Full Text Available O conflito de interesses entre executivos e proprietários é uma questão amplamente difundida na academia, já documentada em 1932 por Berle e Means, trazendo à tona o clássico conflito de interesses entre agente e principal discutido pela Teoria da Agência. A premissa por trás da governança corporativa é que as pessoas que estão dentro das corporações não necessariamente agem visando o melhor para os provedores de fundos. Partindo deste pressuposto, o trabalho em questão visa verificar a influência dos aspectos de governança corporativa na eficiência das empresas de capital aberto brasileiras. O estudo une técnicas de otimização estática através de Análise Envoltória de Dados (DEA para identificar a eficiência das empresas de capital aberto, com Dados em Painel para identificar a influência da governança corporativa na eficiência das empresas. Os dados foram coletados manualmente dos relatórios 20-F da Security Exchange Commission (SEC das empresas brasileiras que possuem American Depositary Receipts (ADRs, já que a base de dados não está disponível, no Brasil, de uma forma completa. Grande parte das hipóteses foi confirmada, evidenciando as condições particulares das finanças corporativas no Brasil no que tange a Governança Corporativa. A incipiência do mercado de capitais brasileiro é percebida em várias análises, ressaltando que o histórico do sistema corporativo brasileiro é um dos limitantes da eficiência das empresas. As condições que prevalecem são: (i alta sobreposição propriedade-direção; (ii conselhos de administração de baixa efetividade; (iii em grupos familiares, os papéis dos acionistas, dos conselhos e da direção não são bem definidos; (iv existe pouca clareza quanto à relação benefício-custo da boa governança; (v baixa eficácia dos conselhos de administração; e (vi indícios de conflitos de interesses, relativizados por incentivos explícitos e implícitos.

  20. Influencia atmosférica en la rotación terrestre

    Science.gov (United States)

    Fernández, L. I.; Arias, E. F.; Brunini, C. A.

    Las observaciones de los parámetros de la orientación terrestre han alcanzado en estos últimos años una exactitud sin precedentes gracias al uso de modernas técnicas de geodesia espacial. Estudios previos han establecido que las variaciones en la rotación terrestre con períodos iguales o menores que dos años obedecen a cambios en la circulación atmosférica global. Para estos períodos puede comprobarse que existe un gran acuerdo entre las fluctuaciones de la longitud del día (LOD) y los cambios del momento angular atmosférico terrestre (AAM). Sin embargo, no existe un acuerdo general acerca de las causas que provocan las variaciones de largo período de la rotación de la Tierra, también conocidas como ``variaciones decenales''. En nuestro análisis examinamos las correlaciones entre las variaciones de los valores de LOD y las fluctuaciones en la componente polar del momento angular atmosférico terrestre. Con este propósito utilizamos los siguientes juegos de datos: las series de AAM, estimado siguiendo la definición de Barnes et al.(1983) para 2825 días provientes del National Meteorological Center (NMC) y del European Centre for Medium Range Weather Forecast (ECMWF); y las series de LOD que contienen valores alisados espaciados a intervalos de un día elaborados por el International Earth Rotation Service (IERS). Mostraremos que para los cambios anuales e interanuales en la rotación de la Tierra la influencia atmosférica es asombrosa, mientras que, tanto en las escalas temporales más grandes y como en las más pequeñas, ambas series, geodésica y atmosférica, parecen diverger aún cuando poseemos observaciones obtenidas con las técnicas más modernas al presente.

  1. LA INFLUENCIA DE LAS FORMAS INARTICULADAS, INTERJECCIONES Y ONOMATOPEYAS INGLESAS EN LOS TEBEOS ESPAÑOLES

    Directory of Open Access Journals (Sweden)

    Isabel de la Cruz Cabanillas

    2009-10-01

    Full Text Available Los intentos de clasificación de interjecciones, onomatopeyas y formas inarticuladas no han resultado satisfactorios, pues no existe una taxonomía aceptada de forma generalizada. Basándonos en estudios anteriores, el presente trabajo pretende revisar estos fenómenos en tebeos tan netamente españoles como Mortadelo y Filemón, Zipi y Zape, Super López, Bruguelandia y TBO. Para ello se compila un corpus de unidades léxicas que reflejan tanto sonidos inarticulados, como interjecciones y onomatopeyas con el objetivo de estudiar si dichas unidades utilizadas en los tebeos corresponden a la representación de ese sonido articulado, esa interjección o esa onomatopeya en su forma inglesa o en su forma española. Así, se podrán obtener conclusiones sobre la posible influencia de la lengua inglesa en los tebeos españoles a través de la clasificación de las unidades recopiladas en el corpus, aún no tratándose de traducciones sino de producciones nacionales, y posiblemente se podrá determinar hasta qué punto dichas formas podrían entenderse por parte de un hablante hispano sin la ayuda gráfica que supone la viñeta.The attempts at classifying interjections, onomatopoeias and inarticulated forms have not turned out satisfactory, as there is no taxonomy that is widely accepted. Taking as basis previous studies, the present piece of work intends to revise these phenomena in so genuine Spanish comics as Mortadelo y Filemón, Zipi y Zape, Super López, Bruguelandia and TBO. To do so, a corpus of lexical units including inarticulated sounds, interjections and onomatopoeias is compiled in order to examine whether the units used in the comics correspond to the representation of that articulated sound, that interjection or that onomatopoeia in their English form or in their Spanish form. This will allow us to draw conclusions on the possible influence of the English language in the Spanish comics through the classification of the units compiled in

  2. Influencia del profesorado en la integración escolar del alumnado minoritario

    Directory of Open Access Journals (Sweden)

    José Antonio JORDÁN

    2009-11-01

    Full Text Available RESUMEN: En este estudio se realiza un análisis de la gran influencia que los profesores ejercen sobre la integración escolar de los alumnos culturalmente minoritarios, a través de su forma de «ser» y de «actuar» en la dinámica cotidiana propia de la enseñanza diaria. La investigación y la teoría analizada en este artículo muestra cómo los profesores pueden —y deben— contribuir poderosamente a lograr una afectiva y social integración escolar de esta categoría de alumnado a través de las mil interacciones positivas diarias mantenidas con estos alumnos. También se pone claramente de manifiesto que los datos analizados deben contribuir, sobre todo, a despertar la conciencia profesional de los profesores a fin de capacitarlos para ser reflexivos, sensibles y comprometidos con la suerte escolar de este tipo de alumnado minoritario. En definitiva, la tesis central encerrada en este artículo es que los profesores resultan ser «los instrumentos por excelencia de los instrumentos pedagógicos», también para conseguir una genuina integración escolar de este tipo de alumnos diferentes.ABSTRACT: This study carnes out an analysis of the great influence that teachers have on the school integration concerning culturally minoritary students, both through the way they «are» and the way they «act» in the daily dynamics characteristic of ordinary teaching. The research and theory analized in this work show how the teachers can —and must— contribute strongly to the affective and social school integration of this kind of students in the thousand and one daily positive interactions with these students. Also it's strongly suggested that the data analysed should contribute to awaken the professional conscience of teachers in order to form a moral and professional responsibility in them that qualifies them to be reflective, sensitive and committed with this kind of minoritary students. In short, the central thesis which lies behind this

  3. Influencia del entorno sobre el riesgo asociado a la Banca Universal Venezolana

    Directory of Open Access Journals (Sweden)

    Alberto G Castellano Montiel

    2001-01-01

    Full Text Available En los últimos años, la situación económica y política del país ha influido enormemente en la situación financiera de muchas empresas, ésto se observa en el gran número de empresas que han cerrado sus puertas desde 1999. A dicha situación no ha escapado el sector financiero el cual ha experimentado el fuerte impacto que estos cambios coyunturales han tenido en la economía del país. Por ello este trabajo pretende identificar la influencia del entorno político económico en el país sobre la situación financiera de la banca universal venezolana. En este sentido se realiza un estudio descriptivo sobre la base de coeficientes de determinación, elaborando para ello un modelo de regresión lineal, utilizando técnicas de evaluación como el análisis discriminante y la metodología de la superintendencia de bancos y otras instituciones financieras, para examinar el riesgo que presenta el sector y cómo ha influido el entorno en esta situación.Para su análisis se asumirá una relación causal entre las variables entorno y situación financiera, realizando un trabajo empírico basado en datos de la banca comercial y universal e información financiera. Todo ello lleva a elaborar conclusiones sobre aspectos tantos internos como externos que afectan al sector bancario específicamente la banca universal venezolana, teniendo como resultado la existencia de un proceso de elásticidad de la situación financiera del sector con respecto al entorno político económico, ocasionando un incremento del riesgo sistemático del sector con respecto a su entorno. Además de la relación existente entre los resultados del análisis discriminante con los resultados de la metodología de la superintendencia de bancos y otras instituciones financieras.

  4. La influencia de la cultura en los estilos parentales en contextos de vulnerabilidad social

    Directory of Open Access Journals (Sweden)

    María C. Richaud

    2013-06-01

    Full Text Available Los objetivos del presente trabajo son: (a analizar si las relaciones entre las dimensiones de la parentalidad y el ajuste de los niños en lo que se refiere a estrategias de afrontamiento, se mantienen constantes en una muestra argentina y otra española en contextos de pobreza; (b comparar las dimensiones de la parentalidad en los dos grupos en estudio, y (c determinar la eficiencia de la parentalidad través del estudio de su influencia en la forma de afrontar la amenaza de los niños. Se administró la escala Graffar-Méndez Castellano (Méndez-Castellano & Méndez, 1994, que permite una caracterización socio económica de la población; la escala argentina de percepción de la relación con los padres para niños de 8 a 12 años (Richaud 2007a y el cuestionario argentino de afrontamiento para niños (Richaud, 2006, a una muestra de 458 niños argentinos y españoles de 10 a 12 años. Seutilizaron correlaciones para analizar las relaciones entre las dimensiones parentales y las estrategias de afrontamiento de los niños, y análisis múltiples de variancia (MANOVA, para estudiar si existían diferentes estilos de relaciones de los padres con los hijos en los dos grupos (Argentina y España, y para analizar si existían diferencias en las estrategias de afrontamiento en los niñosde los dos grupos estudiados. Los resultados indican que la aceptación de ambos padres se relacionó positivamente en ambos grupos con las estrategias más funcionales del afrontamiento, y que las dimensiones parentales negativas, tanto el control patológico paterno como lanegligencia de ambos padres, se relacionaron positivamente, en ambos grupos, con el descontrol emocional de los niños. Por su parte, se observa un tipo de relación parental de mayor autonomía y extrema-negligencia en el grupo argentino, y de mayor control extremo en elgrupo español. Al mismo tiempo, se encontró que los niños del grupo argentino adoptan estrategias de afrontamiento menos

  5. La (escasa influencia de la antropología en la toma de decisiones relativas a las migraciones en el ámbito internacional

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    David Martín-Castro

    2007-09-01

    Full Text Available Este texto analiza la escasa influencia que tienen los antropólogos tanto en la definición de las agendas como en el contenido de las políticas y normas internacionales en el ámbito de las migraciones. Para ello, utiliza algunos ejemplos de eventos recientes.

  6. Sobre la influencia del ángulo de corte y del azimut en procesamiento GPS de alta precisión

    OpenAIRE

    Zurutuza, J.; Hilla, Steve; Soler, Tomás; Sevilla, Miguel J.

    2007-01-01

    ZURUTUZA, J. [et al.]. "Sobre la influencia del ángulo de corte y del azimut en procesamiento GPS de alta precisión". En: 5ª Asamblea Hispano Portuguesa de Geodesia y Geofísica, (Sevilla, 30 de enero - 3 de febrero de 2006)

  7. Asociación de la exposición ocupacional a plaguicidas organofosforados con el daño oxidativo y actividad de acetilcolinesterasa

    Directory of Open Access Journals (Sweden)

    E.G. Ortega Freyre

    2016-01-01

    Full Text Available Los plaguicidas organofosforados (POF poseen una acción anticolinesterásica utilizada como indicador de intoxicación crónica del trabajador agrícola por POF. En esta población, los POF pueden actuar como pro-oxidantes, afectando la actividad de las enzimas antioxidantes y probablemente generar daños crónicos. Objetivo. Determinar la influencia de la exposición ocupacional a POF sobre el daño oxidativo y actividad de acetilcolinesterasa en trabajadores agrícolas. Metodología. Se realizó un estudio observacional, analítico, retrospectivo y comparativo en 45 trabajadores del Comité de Sanidad Vegetal de Durango A.C. (CESAVEDAC. Se evaluó la actividad de acetilcolinesterasa lipoperoxidación y capacidad antioxidante total en plasma, además de evaluar las concentraciones de colesterol, triglicéridos, glucosa. Resultados. El daño oxidativo se asocia a la exposición a POF (p=0.003 siendo 3.21 veces mayor el riesgo de desarrollar daño oxidativo en el grupo expuesto a POF, además existe una asociación entre la inhibición de acetilcolinesterasa y la exposición a POF (p=0.01 siendo 2.92 veces mayor el riesgo de presentar dicha inhibición con respecto al grupo no expuesto. Conclusiones. Existe una influencia negativa de la exposición ocupacional a POF sobre el daño oxidativo y la actividad de acetilcolinesterasa en la población de trabajadores agrícolas estudiada.

  8. Evaluation of conformal radiotherapy techniques through physics and biologic criteria; Avaliacao de tecnicas radioterapicas conformacionais utilizando criterios fisicos e biologicos

    Energy Technology Data Exchange (ETDEWEB)

    Bloch, Jonatas Carrero

    2012-07-01

    In the fight against cancer, different irradiation techniques have been developed based on technological advances and aiming to optimize the elimination of tumor cells with the lowest damage to healthy tissues. The radiotherapy planning goal is to establish irradiation technical parameters in order to achieve the prescribed dose distribution over the treatment volumes. While dose prescription is based on radiosensitivity of the irradiated tissues, the physical calculations on treatment planning take into account dosimetric parameters related to the radiation beam and the physical characteristics of the irradiated tissues. To incorporate tissue's radiosensitivity into radiotherapy planning calculations can help particularize treatments and establish criteria to compare and elect radiation techniques, contributing to the tumor control and the success of the treatment. Accordingly, biological models of cellular response to radiation have to be well established. This work aimed to study the applicability of using biological models in radiotherapy planning calculations to aid evaluating radiotherapy techniques. Tumor control probability (TCP) was studied for two formulations of the linear-quadratic model, with and without repopulation, as a function of planning parameters, as dose per fraction, and of radiobiological parameters, as the α/β ratio. Besides, the usage of biological criteria to compare radiotherapy techniques was tested using a prostate planning simulated with Monte Carlo code PENELOPE. Afterwards, prostate planning for five patients from the Hospital das Clinicas da Faculdade de Medicina de Ribeirao Preto, USP, using three different techniques were compared using the tumor control probability. In that order, dose matrices from the XiO treatment planning system were converted to TCP distributions and TCP-volume histograms. The studies performed allow the conclusions that radiobiological parameters can significantly influence tumor control

  9. GERONTOLOGIA: ESTADO DA ARTE

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    Vera M.A.Tordino Brandão

    2010-02-01

    Full Text Available O Programa de Gerontologia da PUC desenvolve pesquisas focando o ser na perspectiva do envelhecimento. As atividades são interdisciplinares e reúnem docentes, alunos e ex-alunos. Nesta mesa redonda apresentamos um panorama sobre estes estudos. Na área da educação e comunicação o foco está centrado na longevidade e na preparação e representação social da velhice. São ressaltadas como temáticas: a formação continuada de profissionais e pesquisadores; o significado da religiosidade/espiritualidade ao longo da trajetória, e sua repercussão na qualidade de vida do idoso; os programas sócio-educacionais para idosos e concepções sobre educação; o monitoramento da mídia na cobertura da crescente longevidade e seus impactos. Em identidade e modos de morar reflete-se sobre soluções planejadas e sua adequação para a inclusão do envelhecimento populacional como questão fundamental, que implica a elaboração de novas políticas, investigações e, especialmente, apresenta-se como questão a ser analisada, refletida e vivenciada pela sociedade em geral. Quanto à saúde, o Programa desenvolve várias pesquisas numa abordagem interdisciplinar tendo como objetos de estudo: a terapia assistida com animais direcionada a idosos com diagnóstico de Alzheimer; o acompanhamento terapêutico e o atendimento psicoterapêutico em grupo, a aplicação da técnica de Calatonia em idosos moradores de ILPI, além da investigação sobre impasses clínicos no idoso frágil. Palavras-chave: gerontologia, longevidade, envelhecimento

  10. Influência da posição prona na oxigenação, frequência respiratória e na força muscular nos recém-nascidos pré-termo em desmame da ventilação mecânica Influencia de la posición prona en la oxigenación, frecuencia respiratoria y en la fuerza muscular en los recién nacidos pre-término en destete de la ventilación mecánica Influence of prone position on oxigenation, respiratory rate and muscle strength in preterm infants being weaned from mechanical ventilation

    OpenAIRE

    Rita de Cássia Malagoli; Fabiana Fagundes A. Santos; Eduardo Araújo Oliveira; Maria Cândida F. Bouzada

    2012-01-01

    OBJETIVO: Verificar a influência do posicionamento do recém-nascido prematuro sobre a força da musculatura respiratória, oxigenação e frequência respiratória. MÉTODOS: Estudo transversal com amostra pareada de recém-nascidos com idade gestacional inferior a 34 semanas, intubados, em processo final de desmame de ventilação mecânica. Foram excluídos aqueles com malformações, síndromes genéticas, doenças neuromusculares, traqueostomizados e em pós-operatório de cirurgias abdominais ou torácicas....

  11. Influencia do tabagismo isolado e associado a aspectos multifatoriais nos parametros acusticos vocais

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    Aline Gomes Lustosa Pinto

    2014-01-01

    Full Text Available Introdução: O fumo pode interferir negativamente na qualidade vocal e outros fatores associados, como o uso profissional da voz, hábitos, etilismo e refluxo gástrico-esofágico, podem potencializar essa interferência. O objetivo do estudo foi analisar a associação do tabagismo e dos demais fatores aos parâmetros acústicos vocais. Forma de estudo: Estudo de coorte contemporâneo com corte transversal. Materiais e métodos: Participaram do estudo 80 adultos, entre 35 e 60 anos, classificados nos grupos fumante (GF e controle (GC. Foi realizada aplicação de questionário e gravação das vozes. A avaliação acústica foi realizada com o software Praat. Foram utilizados os testes Mann-Whitney, qui-quadrado e regressão linear simples. Resultados: O GF apresentou maior prevalência de etilismo, tosse, hábito de pigarrear e uso profissional da voz, assim como apresentou valores aumentados para relação ruído-harmônico (NHR, jitter e shimmer. Foi estabelecida correlação entre o gênero feminino e todos os parâmetros acústicos, assim como entre o RGE, o aumento do jitter e o hábito de fumar, o agravamento da frequência fundamental, o aumento do jitter, o shimmer e a NHR. Conclusão: O fumo interfere nos parâmetros acústicos de modo isolado e/ou associado ao etilismo, tosse, hábito de pigarrear, RGE e uso profissional da voz.

  12. Psicodinâmica da violência de grandes grupos e da violência de massas

    Directory of Open Access Journals (Sweden)

    Vamik D. Volkan

    2006-01-01

    Full Text Available A partir de Freud, as teorias psicanalistas sobre grandes grupos focalizam, principalmente, as percepções e os significados que, psicologicamente, os indivíduos atribuem a eles. Este texto analisa alguns aspectos sobre a psicologia dos grandes grupos e sua psicodinâmica interna e específica. Toma como referência grupos étnicos, nacionais, religiosos e ideológicos cujo pertencimento dos sujeitos iniciou-se na infância. O autor faz uma comparação entre o processo de luto em indivíduos e o processo de luto em grandes grupos para ilustrar por que é necessário investir no conhecimento da psicologia destes últimos como um objeto específico. O autor descreve, ainda, sinais e sintomas de regressão em grandes grupos. Quando há ameaça à identidade coletiva, pode ocorrer um processo de violência de massas que obviamente influencia a saúde pública.

  13. Influencias nacionales europeas en la política educativa española del siglo XX

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    Juan Manuel FERNÁNDEZ SORIA

    2010-03-01

    Full Text Available RESUMEN: En este artículo se estudian las influencias de los macromodelos nacionales europeos en la política educativa española. Francia y su especial influjo en aspectos políticos y administrativos proporciona los principios que atraen a muchos protagonistas de la educación española durante el primer tercio del XX; Alemania, junto a la sistematización de su pensamiento ofrece una pedagogía propiciadora de un socialismo humanista y una ética nueva; el modelo de formación de minorías que caracteriza la pedagogía inglesa fascina a liberales y conservadores. La influencia de la Rusia soviética es visible sobre todo durante la República en guerra, un momento éste en el que, y hasta mediados del siglo, la educación del régimen de Franco conoce también el peso de la pedagogía nazi sobre todo en la organización de la juventud y en experiencias de asistencia social, y de la pedagogía del fascismo italiano en la política educativa del primer franquismo. A partir de entonces la influencia en la política educativa española corresponde a los organismos internacionales.ABSTRACT: The influence European macro models have upon Spanish educational policy, is studied in this article. France and its special influence in political and administrative aspects, provides the principles which attract many protagonists of the Spanish education during the first third of the 20th century. Germany, with the systematisation of its thoughts, offers a pedagogy that propitiates a humanist socialism and a new ethic. The model of education of minorities, characteristic of English pedagogy, fascinates both liberals and conservatives. The influence of the Soviet Russia is visible above all during the Republic in times of the Civil War, moment in which, and until about the middle of the 20th century, Franco’s regime education also knows the weight of nazi pedagogy, specially in youth organisations and in social work experiences, and the Italian’s fascism

  14. Effect of the available soil water and organic matter on the castor bean foliar area growth; Influencia da agua disponivel e materia organica no crescimento da area foliar da mamoneira

    Energy Technology Data Exchange (ETDEWEB)

    Lacerda, Rogerio D. de; Almeida, Larissa C.; Guerra, Hugo O. Carvalho; Souza, Cristiana M. de; Batista, Faed R. [Universidade Federal de Campina Grande (UFCG), PB (Brazil)], Emails: rogerio_dl@yahoo.com.br, laris_almeida@yahoo.com.br, hugo_carvallo@hotmail.com, crismsouza@hotmail.com, faedrideiro@hotmail.com

    2010-07-01

    The Brazilian potential for bio fuel production through the cultivation of oil seeds is immeasurable. On the Northeast is possible to cultivate the castor bean, peanuts, sesame, babassu and other species. Just for the castor bean there exist 3.0 millions of hectares able for cultivation. The experiment had as objective to study the effect of available soil water for plants and organic matter on the foliar area production. It was conducted on the field during the period of October 2008 to March 2009 using an experimental design 2 x 4 factorial on a randomized-complete block design, constituted of two soil organic matter contents (5.0 g.kg{sup -1} and 25.0 g.kg{sup -1}) and four soil water contents (100, 90, 80 and 70% of the soil available water for the plants) with 3 replicates. On each 100 m{sup 2} parcel 50 plants were cultivated until 180 days after the sowing, DAS. The analyses of variance allowed to observe that the addition of organic matter increased the foliar areas in 20,7% and the available water produced an increment of 51,5% when were elevated from 70 to 100%. (author)

  15. Advanced gastric adenocarcinoma. Influence of preoperative radiation therapy on toxicity and long-term survival rates; Adenocarcinoma gastrico avancado. Analise da toxicidade e da influencia da radioterapia pre-operatoria nos indices de sobrevivencia a longo prazo

    Energy Technology Data Exchange (ETDEWEB)

    Malzoni, Carlos Eduardo

    1996-12-31

    The surgical treatment of gastric cancer has better long-term survival rates when performed in patients with early gastric cancer. Worse results are obtained in treatment of advanced gastric cancer. Most patients in west centers are treated in advanced stages. A great number of them go through a surgical treatment unable by itself to cure them. the frequent local recurrence caused by failure of the surgical treatment has been keeping poor survival rates in patients with advanced gastric cancer for decades. The desire of improving survival is the reason of the use of adjuvant therapies. This paper achieved the retrospective study of the influence of preoperative radiation therapy (2000 cGy) in long-term survival rates (120 months) of patients with advanced gastric cancer on stages IIIa, IIIb and IV. The possible injuries caused in the liver and kidney were observed also as well as first group was treated by surgical and radiation therapies and the second received surgical treatment only. There was no statistical difference between the two groups when sex, age, race, occurrence of other diseases, nutritional assessment, TNM stage, occurrence of obstruction or bleeding caused by tumor, surgical procedure and hepatic and renal function were considered. Survival rates and changes on hepatic and renal function were statistically compared. The results showed a statistic improvement on the long-term survival rates of stage IIIa patients treated by preoperative radiation therapy. No statistic difference was observed on hepatic or renal function between the groups. No adverse influence of radiation therapy method was detected by the used parameters. There was no statistical difference between the two groups when immediate surgical complications were considered. (author) 112 refs., 34 tabs.

  16. Influencias de Pestalozzi en Pablo Montesino: repercusiones en la educación Influencias de Pestalozzi en Pablo Montesino: repercusiones en la educación española decimonónica

    Directory of Open Access Journals (Sweden)

    Carmen SANCHIDRIAN BLANCO

    2010-03-01

    Full Text Available RESUMEN: Quizá ningún pedagogo europeo haya ejercido tanta influencia en la enseñanza primaria y de párvulos, en España en el siglo xix, como Pestalozzi a través de Pablo Montesino. El exilio que éste se vio obligado a padecer durante la década «ominosa» fue uno de los períodos que más repercusión tendría en su vida posterior ya que «el directo problema de tener que educar a sus propios hijos durante el exilio, y la casualidad de estar en Inglaterra cuando Owen y sus partidarios tejían las primeras redes de la enseñanza de párvulos, es quizá la justificación primaria de su solemne entrada en el campo educativo».

  17. Alguns aspectos da avifauna da Ilha Terceira.

    OpenAIRE

    Medeiros, Fátima; Daniel, Ana; Pereira, Ana C.; Pimentel, Dinarte; J. Oliveira

    1996-01-01

    IX Expedição Científica do Departamento de Biologia - Terceira 1994. 0s objectivos da presente expedição foram os seguintes: 1. Captura e biometria de espécimes pertencentes a diferentes espécies de aves com vista ulterior realização de estudos morfológicos; 2. Estudo da distribuição de Columba palumbus na ilha Terceira; 3. Detecção de habitats propícios para a nidificação de Gallinula chloropus correiana; 4. Observação e identificação de diferentes espécies de aves residentes e migrató...

  18. Het Italiaanse voorzetsel da

    NARCIS (Netherlands)

    Boer, M.G. de

    2010-01-01

    SAMENVATTING In een voorzetselstudie in het kader van Jackendoffs semantische theorie wordt het sterk polyseme Italiaanse voorzetsel da geanalyseerd als een verzameling deelbetekenissen waarbij de meeste door een of meer semantische regels afgeleid kunnen worden van de basisbetekenis ruimtelijke He

  19. El testamento y otros documentos sobre Daniele da Volterra

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    Redín, Gonzalo

    2010-09-01

    Full Text Available Daniele da Volterra is better known in Spain for painting the drapery that covers some of the nudes in Michelangelo’s The Last Judgment than for his own work, which defined him as his master’s most loyal successor. Nonetheless, Daniele’s influence on Spanish art through Gaspar Becerra, a disciple of his in Rome, determined to a large extent the development of sculpture in this country in the second half of the 16th century. This article makes known and discusses Daniele’s previously unpublished last will and testament, located in the Archivio di Stato di Roma among the volumes by the notary Thomassino, who attended to the inventory of his possessions. It also provides new details on Daniele’s estate and on his direct disciples Michele Alberti, Feliciano de San Vito, and Biagio Betti along with his indirect ones such as Jacopo Rocchetti.

    Daniele da Volterra es más conocido en España por pintar los paños que cubren algunos de los desnudos del Juicio final de Miguel Ángel, que por su obra, que le define como el más fiel heredero de su maestro. Sin embargo, su influencia en el arte español a través de Gaspar Becerra, discípulo suyo en Roma, condicionó el desarrollo de la escultura en buena parte de nuestro país en la segunda mitad del siglo XVI. Publicamos y comentamos aquí su testamento inédito, localizado en el Archivio di Stato di Roma entre los volúmenes del notario Thomassino, que se encargó del inventario de sus bienes, y aportamos noticias relativas a su herencia y a sus discípulos directos, Michele Alberti, Feliciano de San Vito y Biagio Betti, e indirectos, como Jacopo Rocchetti.

  20. INFLUENCIA DE LA AUTOEFICACIA EN EL ÁMBITO ACADÉMICO

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    Fernando Ruiz Dodobara

    2005-04-01

    Full Text Available RESUMEN: La autoeficacia o creencia en la propia capacidad en determinadas situaciones puede ser considerada un concepto vital en el ámbito educativo, puesto que es un elemento que predice de mejor manera el desempeño de la habilidad y del conocimiento personales. Este concepto se inserta dentro de la Teoría Social Cognitiva de Bandura, en la cual se considera al ser humano como un individuo autorganizado, autorreflexivo, autorregulado y comprometido con su desarrollo. Un punto clave en esta teoría es que las personas tienen creencias personales (creencias de autoeficacia, que les permiten ejercitar cierto control sobre sus sentimientos, acciones y pensamientos. Esto quiere decir que el comportamiento de los individuos se ve influido por lo que piensan, creen y sienten. Así, pues, la autoeficacia se convierte en un buen elemento de predicción del comportamiento humano. Las creencias de autoeficacia influyen en la conducta en general, mediante procesos cognitivos, motivacionales, afectivos y selectivos. Específicamente, en el ámbito académico, las creencias de autoeficacia actúan sobre la motivación, la persistencia y éxito académico. Cabe mencionar, también, que las creencias de autoeficacia que los profesores tienen acerca de su labor tienen una influencia importante en el desempeño de los alumnos. Finalmente, podemos mencionar que, entre las fuentes de autoeficacia, se encuentran el manejo exitoso de experiencias, la comparación con modelos similares, la persuasión social y los estados corporales. ABSTRACT: Believing in the own capacity or self- effectiveness in certain situations could be considered as a vital concept within the academic field because it can better predict performance than otherwise personal skills and knowledge can do.This concept is inserted within Bandura’s Cognitive Social Theory, which considers the human being as a self-organized, self-reflexive and task-committed individual. A key point in this

  1. INFLUENCIA DE LA TEMPERATURA Y EL PORCENTAJE DEL CATALIZADOR EN LA ETANÓLISIS DEL ACEITE DE PALMA

    Directory of Open Access Journals (Sweden)

    Paulo César Narváez

    2008-03-01

    Full Text Available En este artículo se presenta la influencia de la temperatura y el porcentaje de catalizador sobre la etanólisis del aceite de palma, y los resultados se comparan con los obtenidos para la metanólisis del mismo aceite. Se realizaron ensayos a 60, 70 y 75 ºC, empleando como catalizador NaOH. Los porcentajes en peso de catalizadorcon respecto al aceite de palma fueron 0,20; 0,50 y 1,00. Los resultados muestran que incrementos en la temperaturay en el porcentaje de catalizador aumentan el rendimiento de la reacción. En comparación con la metanólisis, en la etanólisisse observó disminución en el rendimiento y en la selectividad.

  2. La Influencia de la Temperatura Exterior sobre los Sistemas de Ventilación Natural en Grandes Atrios

    Directory of Open Access Journals (Sweden)

    Espina, P.

    2008-09-01

    Full Text Available Natural venting systems present numerous advantages opposite to the mechanical exhaust for the smoke control – a reduction in both facilities and maintenance costs–. Nevertheless, the influence of numerous factors affects significantly their efficacy: the architectural characteristics of the building, the direction and wind velocity, the proximity of tall buildings, the smoke temperature, the environmental interior and exterior temperatures, the existence of snow or ice on the ceiling, etc. All of them are important, but the influence of the environmental exterior temperature plays a decisive role. The goal of this Investigation Research was to evaluate the influence of the external temperature on the smoke movement and the hot layer descent regarding the efficacy of the natural venting systems installed for the smoke control in large atria. The analysis was developed using the ‘Fire Dynamics Simulator - FDS’ model (1, a computational fluid dynamics (CFD model of fi re-driven fluid flow for the study of fire. The results demonstrated that a design that does not contemplate this factor can turn out to be inadequate, since it has a decisive influence to guarantee human safety. The obtained results showed very significant differences about the different parameters linked to the smoke movement in an atrium.Entre las diferentes estrategias de Control y Evacuación de los Humos del Incendio, los sistemas de ventilación natural presentan numerosas ventajas frente a la ventilación mecánica – fundamentalmente una menor inversión tanto en equipos como en gastos de mantenimiento –. Sin embargo, su eficacia depende de la influencia ejercida por numerosos factores – características arquitectónicas del edificio, dirección y velocidad del viento, proximidad de edificios de gran altura, temperatura de los humos, temperatura ambiental interior, temperatura en el exterior del recinto, existencia de nieve o hielo en

  3. Prisión permanente revisable : influencia de los medios de comunicación en la reforma penal

    OpenAIRE

    Moragues García, Marta

    2016-01-01

    El presente trabajo se divide en dos partes. En la primera, se realiza una revisión de la literatura existente en torno al efecto de los medios de comunicación sobre la conformación de la agenda política y pública. Las teorías del agenda setting y agenda building afirman este proceso de influencia de la agenda mediática sobre la pública y política. Por lo tanto, esto hace suponer que la forma en que los medios de comunicación traten un evento social, podría determinar la conformación de las p...

  4. INFLUENCIA PLUVIOMÉTRICA SOBRE ENLACES ÓPTICOS NO GUIADOS RESPECTO A LA TASA DE TRANSMISIÓN

    OpenAIRE

    Luís G. Molero Suárez

    2005-01-01

    El propósito fundamental de esta investigación fue el estudio de la influencia pluviométrica sobre enlaces ópticos no guiados respecto a la tasa de transmisión, para lograr obtener como resultados, los índices en relación a la pérdida de datos producto de la exposición de este tipo de enlaces al fenómeno de lluvia con diferentes niveles de tasa de transmisión. La investigación según su tipo es de experimental y explicativa. La información fue recabada con la búsqueda de textos tales como Ferr...

  5. Influencia de los estilos parentales en la formación del autoconocimiento en Educación Infantil

    OpenAIRE

    Rosell, Cristina

    2012-01-01

    En este trabajo se analiza la influencia de los distintos estilos parentales en la formación de factores claves en el desarrollo de los niños, como la autoestima y el autoconocimiento. Para ello se ha realizado un pequeño estudio con 23 niños, de entre 3 y 4 años, y con sus respectivas familias, a través de la aplicación del Cuestionario de Crianza Parental (PCRI-M) de Roa y del Barrio (2001), y de diversas actividades que miden los factores antes señalados. Así mismo se ha realizado una revi...

  6. Influencia de los estilos de liderazgo en el desempeño de las empresas exportadoras colombianas

    Directory of Open Access Journals (Sweden)

    Diana Marcela Escandon-Barbosa

    2016-01-01

    Full Text Available Este artículo parte de la teoría de rasgos de liderazgo para analizar la influencia del tipo de liderazgo de lasempresas colombianas sobre su desempe ̃no exportador. Para cumplir este objetivo se utiliza una base dedatos de 306 empresas exportadoras colombianas y por medio de un análisis de conglomerados bietápicose analizan los diferentes tipos de liderazgo: democrático, autocrático y liberal. Los resultados obtenidosidentifican un conglomerado de empresas con alto desempe ̃no exportador que combinan el liderazgoliberal y el democrático, mientras que el segundo conglomerado está conformado por las empresas conbajo desempe ̃no exportador que asumen un liderazgo liberal. Se concluye que para alcanzar niveles dedesempe ̃no superior los gerentes colombianos ejercen el liderazgo como un equilibrio entre libertad ycontrol.

  7. Influencia de la retórica musical de Los Beatles en los “jingles” y en la publicidad

    Directory of Open Access Journals (Sweden)

    Anton Alvarez Ruiz

    2013-01-01

    Full Text Available Este artículo explora de qué manera los jingles publicitarios se han visto influidos por la música de The Beatles. Para ello, utiliza una metodología descriptiva, comparativa y diacrónica. Tras estudiar brevemente la historia e importancia de los jingles, analizando algunas características de las canciones de The Beatles y su semejanza con los jingles publicitarios. En las canciones mencionadas se detallan las principales figuras retóricas encontradas, tanto en los textos como en las frases musicales y su influencia en la música publicitaria. También se estudia la única pieza publicitaria conocida realizada por The Beatles en su carrera. Por último, se analiza la posterior utilización de sus canciones y su imagen en varias campañas muy significadas, realizadas por la publicidad comercial en las últimas décadas.

  8. Influencia de un sólido sobre el secado de mezclas líquidas parcialmente miscibles

    Directory of Open Access Journals (Sweden)

    M. Vargas

    2006-01-01

    Full Text Available Un estudio experimental del secado convectivo de un sólido humedecido con una mezcla líquida que exhibe separación de fases durante el proceso de evaporación ha sido efectuado. Los experimentos fueron realizados en un secador de túnel a escala de laboratorio bajo diferentes condiciones de operación tales como temperatura y velocidad del gas así como diferentes composiciones de las mezclas líquidas. Se humedeció el sólido con mezclas binarias y ternarias, y se efectuó la evaporación a partir de la superficie libre líquida. Se utilizo como humedad el sistema binario agua-hexano y la mezcla ternaria agua-hexano-etanol, ambos involucrados en la extracción de biopesticida a partir de semillas de nim. Esferas de vidrio y semillas de nim trituradas fueron usadas como sólido. La densidad y el índice de distribución másico de las fases tienen gran influencia en el proceso de evaporación. Si la fase menos densa del hexano esta en exceso, la superficie es cubierta solamente por esta fase y no existe evaporación de la otra fase hasta que el índice de distribución másico es tal que la segunda fase es expuesta al gas. La presencia de un sólido poroso interrumpe este patrón y la fase más densa puede ser removida simultáneamente incluso a bajas fracciones de esta última. En este caso, también la forma en que el sólido fue humedecido tiene influencia en el proceso.

  9. Los mapas conceptuales y su influencia en lo afectivo-valorativo del estudiante para aprender biología

    Directory of Open Access Journals (Sweden)

    Acosta, Savier

    2010-09-01

    Full Text Available El objetivo de esta investigación fue identificar la influencia de los mapas conceptuales en lo afectivo-valorativo del estudiante para aprender Biología. Las teorías que sirvieron de apoyo las fueron Díaz y Hernández (2007, Novak (1998. La investigación se realizó en la Unidad Educativa José Antonio Almarza; fue de tipo experimental con un diseño cuasi-experimental. La población estuvo conformada por 468 estudiantes, de donde se seleccionó una muestra de 68 estudiantes (33 del grupo control y (35 el grupo experimental. La técnica utilizada para recolectar información fue la observación; el instrumento, una hoja de registro validado previamente por expertos en el área. Se aplicó la prueba t de student para establecer los grados de significancia entre el pre y postest, el análisis de los resultados se efectuó mediante la estadística descriptiva y la inferencial a través de frecuencias, porcentajes, media y la desviación estándar. Como resultados los mapas conceptuales aumentan en los estudiantes su responsabilidad para aprender Biología, respeto hacia la forma de pensar de los demás, valoración del trabajo en equipo, importancia para aprender Biología e incorporación de experiencias significativas del contexto. En conclusión que los mapas conceptuales ejercen influencia en el desarrollo de sentimientos y valores en los estudiantes para aprender dicha ciencia.

  10. On the influence of environmental factors on radon levels in caves of Ribeira valley state parks, SP and evaluation of radioactive equilibrium and equilibrium factor between radon and its progeny; Sobre a influencia de fatores ambientais nos niveis de radonio em cavernas dos parques estaduais do vale do Ribeira, SP e avaliacao do equilibrio radioativo e fator de equilibrio entre radonio e seus descendentes

    Energy Technology Data Exchange (ETDEWEB)

    Alberigi, Simone

    2011-07-01

    In the present study it was carried out the monitoring of radon in caves distributed among three state parks of Sao Paulo. The radon concentration were determinate in Morro Preto and Santana caves, located at PETAR - Parque Estadual Turistico do Alto Ribeira (High Ribeira River Tourist State Park), Diabo cave, situated in PEJ - Parque Estadual de Jacupiranga (Jacupiranga State Park) and Colorida cave located in PEI - Parque Estadual Intervales (Intervales State Park PEI). The monitoring covered measurements between April 2009 and June 2010. Radon concentrations were carried out by using the technique of passive detection with CR-39 solid state nuclear track detectors and NRPB diffusion chambers. The detectors were exposed in periods ranging from 30 to 150 days. Radon concentrations varied from 132 Bq/m{sup 3} to 9456 Bq/m{sup 3}. The values of radon concentrations were analyzed together with information about rainfall and internal and external temperature values of the Santana cave environment and regional literature values for a possible relationship between radon variations and weather information. Both the determinations of {sup 22}'6Ra in water samples collected in some caves and rivers and radon emanation from a stalactite collected at Santana cave allowed to verify that the radon in the caves comes from the walls rocks. The verification of the radioactive equilibrium between {sup 222}Rn, {sup 218}Po and '2{sup 14}Po in the exposed detectors was prejudiced by the high tracks densities, committing the methodology effectiveness. The annual effective dose was calculated for three values obtained from the literature for the equilibrium factor. Considering the most realistic scenario, with equilibrium factor of 0.5 and 52 working weeks, the annual effective dose was 5.1 mSv/y. Concerning the worst scenario, which simulates an extreme case, adopting an equilibrium factor equal to 1 and 52 weeks of work per year, the annual effective dose is 10.2 mSv/y. Also with information received from a monitoring company in the region about the hours their touristic guides spent monthly inside the caves, it was estimated the received dose that resulted in a total annual effective dose of 8.5 mSv/y, considering an equilibrium factor 0.5 and, for the worst scenario of an equilibrium factor of 1, the result was 17.0 mSv/y. All estimated doses values are below 20 mSv/y, which is the upper limit of annual effective dose for occupational exposure recommended by the International Commission on Radiological Protection.

  11. A FORMAÇÃO REFERENCIAL DO COMPORTAMENTO ORGANIZACIONAL NO ENFOQUE DA GESTÃO ARQUIVÍSTICA

    Directory of Open Access Journals (Sweden)

    Carolina Izidoro Roncato

    2012-10-01

    Full Text Available A aplicabilidade das teorias administrativas explica o processo de mudança e adaptação das unidades informacionais e refletem a influencia que o ambiente exerce sobre as organizações. O foco em estudos que otimizam os recursos institucionais, promovem uma compreensão da área da CI determinando sua essencial função na sociedade do conhecimento. O ambiente organizacional sofre influencias diretas do processo administrativo do trabalho e a solução de conflitos promove o êxito das organizações. No departamento de arquivo, o fator dos grupos informais determinados na teoria das relações humanas, exerce uma forte influência na gestão local. A pesquisa propôs verificar as influências social e científica da teoria das relações humanas para o processo de gestão de arquivos e para tanto se utilizou o estudo de caso de um arquivo pertencente a uma instituição universitária. A ferramenta estratégica de recolha de dados foi o Grupo Focal. A análise dos dados guiou-se por três fases distintas: Elementos motivacionais; influência comportamental no indivíduo e; integração da organização formal com a informal. Como resultados do estudo, a motivação e um bom ambiente de trabalho destacaram-se nos fatores que desenvolvem habilidades e competências dos funcionários, interferindo no comportamento organizacional que faz-se presente através de formas de recompensas, reconhecimento, homem social e grupos informais. Entende-se que pesquisas dessa natureza contribuem para o desenvolvimento da gestão de arquivos e sugere-se que os dados resultantes da análise sejam aplicados em arquivos com uma estrutura organizacional mais complexa, como no caso de arquivos públicos institucionais.

  12. Morfotectônica da Bacia Hidrográfica do Rio Bonito, Petrópolis, RJ

    Directory of Open Access Journals (Sweden)

    Laura Delgado Mendes

    2010-08-01

    Full Text Available O objetivo deste trabalho é investigar o papel das estruturas subjacentes associadas à evolução tectônica regional e o seu reflexo na geomorfologia, a partir de uma abordagem morfotectônica na bacia do rio Bonito, localizada no extremo norte do município de Petrópolis, Planalto Serrano do Estado do Rio de Janeiro. As estruturas identificadas na área correspondem a falhas e famílias de juntas, que estão relacionadas com as descontinuidades de caráter regional e diretamente associadas ao contexto geológico regional ao qual se inserem, exibindo condições significativamente marcadas pelos processos vinculados à ruptura continental e abertura do Oceano Atlântico, iniciados a partir do Jurássico Superior, especialmente pela reativação de descontinuidades preexistentes. O controle tectônico-estrutural se reflete na compartimentação morfotectônica a partir (ada integração dos dados estruturais, da análise dos lineamentos da rede de drenagem, que definem trends de lineamentos que correspondem a estruturas identificadas e medidas, (b do relevo, que apresenta escalonamentos e o desenvolvimento de vales suspensos, e (c da distribuição espacial da cobertura sedimentar que reproduz a complexidade de feições observadas tanto no contexto local quanto no regional. Dessa maneira, tendo como princípio que a tectônica influencia diretamente a evolução da paisagem, os dados obtidos mostram uma interferência direta das estruturas na compartimentação morfotectônica e na dinâmica e evolução da paisagem da área em estudo.

  13. MORTALIDADE FEMININA E ANOS DE VIDA PERDIDOS POR HOMICÍDIO/AGRESSÃO EM CAPITAL BRASILEIRA APÓS PROMULGAÇÃO DA LEI MARIA DA PENHA

    Directory of Open Access Journals (Sweden)

    Nádia de Araújo Amaral

    2013-01-01

    Full Text Available La violencia contra la mujer es un fenómeno que afecta a todas las personas en todas las partes del mundo. En Brasil, en 2006, se promulgó la Ley 11.340/2006, bautizada como Ley Maria da Penha, con la función basilar de cohibir la violencia domestica, familiar y afectiva. La finalidad del estudio fue comparar la mortalidad femenina por agresión/homicidio antes y después de la Ley en Rio Branco, Acre, Brasil. Fue desarrollado un estudio ecológico con víctimas de agresión y homicidios registrados en el Sistema de Información de Mortalidad, del 2002 al 2010. Las mujeres víctimas de homicidio tenían entre 21 e 25 años (28,6%, bajo nivel de escolaridad (39,3% y sin ocupación (64,3%. La incidencia de óbitos mostró disminución seguido por aumento en los últimos dos años, con reflejos en los Años Potenciales de Vida Perdidos en el rango de edad de 16 a 39 años. La Ley Maria da Penha es una realidad en el país y tiene papel relevante en la sociedad por esa razón su efectividad e influencia deben ser analizadas en otras investigaciones.

  14. Influencia de la citoquina Interleuquina 6 (IL-6) adipocitaria y muscular en el control del metabolismo

    OpenAIRE

    Ferrer Villahoz, Beatriz

    2013-01-01

    La interleuquina -6 (IL-6) es una citoquina pleiotrópica cuya función principal se da en el sistema inmune en el control de la inflamación. Realiza importantes funciones en la homeostasis del sistema nervioso central (SNC), en la respuesta al ejercicio físico e incluso en el metabolismo (particularmente en funciones relacionadas con la insulina). Diversos estudios han demostrado que la IL-6 podría tener un papel en el control del peso corporal tanto a nivel de SNC como periférico, aunque no e...

  15. Análise Icnológica da Formação Ponta Grossa (Devoniano em Afloramentos da Borda Leste da Bacia do Paraná.

    Directory of Open Access Journals (Sweden)

    Marina Abelha

    2007-07-01

    proximal. A icnofácies Cruziana Empobrecidaé caracterizada por uma menor abundância e diversidadede icnogêneros em relação à icnofáciesCruziana Arquetípica, típica de ambientes deltaicosdistais; isto se dá pela variação de salinidade daágua, o que torna o meio estressante e propício paraa proliferação de uma icnofauna oportunística especializada,o que gera uma associação de icnofósseistípica, dada pelos icnofósseis Schaubcylindrichnusisp., Asterosoma isp., Planolites isp., Teichichnusisp., Zoophycos isp. e estruturas-de-escape. Esta associaçãoé características de um paleoambiente demar raso de costa afora sujeito a ações de tempestadecom influencia deltaica. A identificação da icnofáciesGlossifungites caracterizada pelo icnogêneroThalassinoides isp. sobre a icnofácies Cruziana permitiuainda a identificação de um provável eventode regressão forçada dentro do contexto trangressivogeral da Formação Ponta Grossa.

  16. Aspectos internacionais da Revolta da Chibata

    Directory of Open Access Journals (Sweden)

    Joseph L. Love

    2011-09-01

    Full Text Available This paper treats four international dimensions of the Revolta da Chibata: 1 the trip of the Dreadnought Sao Paulo to Lisbon (with Presidente Hermes aboard, during which the Portuguese monarchy was overthrown, providing a model for Brazilian sailors; 2 the reception and interpretation of the revolt by the French, British, and American presses, which quickly saw that the central issue was torture; 3 ideological aspects of the revolt, which focus on the rights of citizens under the constitution of 1891; and 4 foreign observers’ favorable impression of the working conditions of Batalhao Naval before the second rebellion in December, and their discovery of a massacre after the second revolt.

  17. EL HOMBRE DE LA MULTITUD Y EL PINTOR DE LA VIDA MODERNA: LA INFLUENCIA DE EDGAR ALLAN POE EN LA CONSTRUCCIÓN DEL CONCEPTO DE MODERNIDAD DE BAUDELAIRE

    Directory of Open Access Journals (Sweden)

    Francisco Pizarro Obaid

    2012-04-01

    Full Text Available El siglo XIX dio lugar a nuevas formas de subjetividad metropolitana que tuvieron en el cuento "El hombre de la multitud", de Edgar Allan Poe, un tratamiento excepcional. Es innegable la relevancia de este relato al interior de su obra, así como su aporte al desarrollo del género narrativo. Sin embargo, el cuento de Poe puede ser considerado, a su vez, como una fuente de notable influencia en la redefinición del concepto de modernidad que Baudelaire plasmará en su obra "El pintor de la vida moderna". Al examinar el personaje anónimo de "El hombre de la multitud" y la singularidad del Sr. G, pintor que da fundamento a la crítica de la tradición pictórica de costumbres, quedará en evidencia como los principales argumentos de Baudelaire sobre el arte y las nuevas formas de habitar la ciudad moderna encuentran en el relato de Poe una significativa fuente de inspiración.The 19th century gave rise to new forms of metropolitan subjectivity with an exceptional treatment in EdgarAllan Poe's tale "TheMan of the Crowd". The relevance of this short story into his work is undeniable, as well as its contribution to the development of the narrative genre. However, Poe's story can be considered as a source of considerable influence in the redefinition of the concept of modernity, that Baudelaire will express in his work "The Painter of Modern Life". In examining the anonymous character of "The Man of the Crowd" and the singularity of Mr. G, the painter who gives substance to the criticism of the pictorial tradition of customs, it grows evident how Baudelaire's main arguments on art and the new ways of life in the modern city find in Poe's short story a significant source of inspiration

  18. DA LITERATURA AO PENSAMENTO

    Directory of Open Access Journals (Sweden)

    Gustavo Bernardo

    2012-07-01

    Full Text Available Apresento uma concepção pessoal do ensino de literatura, condensando a discussão das principais questões que o afetam: a singularidade da disciplina entre as demais disciplinas escolares; a crítica do realismo como valor dominante; a importância do exemplo; os efeitos da desvalorização salarial e moral do professor; a praga das adaptações literárias para jovens. A partir dessas questões, apresento cinco modos de leitura e ensino do texto literário, a saber: ler como resposta; ler como pergunta; a leitura ingênua; a leitura crítica; a leitura teórica. Concluo pela necessidade de proteção radical à dúvida, fundadora da literatura e do próprio pensamento.

  19. Da Vinci Linjen

    DEFF Research Database (Denmark)

    Nissen, Poul

    Afsluttende evalueringsrapport fra følgeforskningen gennem tre år i forbindelse med dety pædagogiske arbejde på Blåbjerggårdskolens Da Vinci Linje for skolemotiverede og underpræsterende elever på 7. til 9. klassetrin.......Afsluttende evalueringsrapport fra følgeforskningen gennem tre år i forbindelse med dety pædagogiske arbejde på Blåbjerggårdskolens Da Vinci Linje for skolemotiverede og underpræsterende elever på 7. til 9. klassetrin....

  20. O consumo de álcool durante o tratamento da tuberculose: percepção dos pacientes

    Directory of Open Access Journals (Sweden)

    Cleidiani Baptista da Silva

    2011-01-01

    Full Text Available El alcoholismo influencia en la prognosis de la tuberculosis-TB, y detectar su uso en la Atención Primaria de Salud evita complicaciones. Se objetivó describir y analizar la percepción sobre el consumo de alcohol en el tratamiento de la TB, discutir las intervenciones del equipo de salud y de enfermería. Se trata de un estudio descriptivo, cualitativo, realizado en Rio de Janeiro con 19 pacientes en tratamiento de TB. Se concluyó en que los sujetos perciben negativamente el consumo de alcohol y los profesionales no siempre los orientan de forma continua; demostrando que la enfermería debe insertarse más activamente en acciones educativas de forma comprensiva. Se recomienda la intervención breve para la promoción de la salud y prevención de daños a la población.

  1. Influencia de los padres y los profesores de Educación Física en la actividad física de los adolescentes

    OpenAIRE

    Olivares, Pedro R; Marco Antonio Cossio-Bolaños; Rossana Gomez-Campos; Alejandro Almonacid-Fierro; Javier Garcia-Rubio

    2015-01-01

    El objetivo del estudio fue analizar la influencia de los padres y los profesores de Educación Física en la Actividad Física extracurricular de los adolescentes. Los datos fueron obtenidos del Sistema Chileno de Medición de la Calidad de Educación en una muestra representativa de 23.180 estudiantes (11.927 niñas y 11.253 niños, con una edad media de 13,7 y 13,8 años). Las variables analizadas fueron la actividad física extracurricular de los adolescentes, la influencia que ejercían lo...

  2. Influencia del nivel técnico en deporte de orientación en el éxito en raids de aventura

    Directory of Open Access Journals (Sweden)

    Antonio Baena-Extremera

    2013-01-01

    Full Text Available El objetivo del presente artículo es conocer la influen-cia del conocimiento técnico en orientación en pruebas de raids de aventura. La muestra fue de 272 competi- dores de élite dentro de la Liga Española de Raids de Aventura, utilizando como instrumento un cuestionario autoadministrado validado previamente. Destacamos que los raiders son aficionados en el 50.4% de los casos. Los competidores federados practican orientación con el 93.1%, obteniendo que la variable practica deporte de orientación tiene una alta influencia en el tipo de raider. Hay que destacar que los campeones internacio-nales practican orientación con el 100.0% y los campeo-nes nacionales con el 91.7%.

  3. Personaje y empatía en la animación actual: influencias de Chaplin y Keaton en Wall-E

    OpenAIRE

    Sanz González, Carlos

    2015-01-01

    En la presente investigación pretendemos analizar las influencias del cine cómico mudo de los primeros años de Hollywood en algunas películas de animación actuales en cuanto a la creación de los personajes. La película de 2008 dirigida por Andrew Stanton, Wall·E, será el elemento principal de nuestro análisis y a ella será a la que apliquemos nuestras hipótesis puesto que creemos que es un ejemplo muy válido para corroborarlo. La idea principal es comprobar cómo se produce esa influencia en l...

  4. The influence of the remedy with diesel oil in impacted environment; A influencia da remediacao em ambiente impactado com oleo diesel

    Energy Technology Data Exchange (ETDEWEB)

    Bento, Douglas M.; Baisch, Paulo; Machado, Maria I.; Costa, Jorge A.V.; Martins, Vilasia [Fundacao Universidade Federal do Rio Grande (FURG), RS (Brazil)

    2004-07-01

    The conventional techniques of cleaning can be complemented with the remediation, for the use of chemical surfactant or of bio surfactant. The bioremediation minimizes the impact of recalcitrant substances in the atmosphere. The chemical surfactant can promote the fastest biodegradation of the oil, but its application should always be evaluated by professionals specialized in environment, since she can be seen as a deliberated introduction of a pollutant. The present work evaluated the influence of the use of a chemical surfactant and of a of bio surfactant (produced by the fungus Aspergillus fumigatus), in controlled spill of oil diesel, happened in at spring/2003 in the Island of the Horses located in the estuary of the Patos Lagoon. The atmosphere was monitored for 6 months, being selected a place with oil diesel, another with oil diesel and chemical surfactant and another with oil diesel and of bio surfactant. The following chemical parameters were analyzed: organic carbon, nitrogen and total match of the sediment. The statistical treatment consisted of the variance analysis (ANOVA) and in the test of Tukey (p <0,01), for the analyzed nutrients. The coming hydrocarbons of the degradation of the oil diesel will be later on certain for GC-MS. The results showed that the best environmental conditions were verified where the remediation was used. (author)

  5. Influence of morphology of ceramic fibers in catalytic combustion of methane; Influencia da morfologia de fibras ceramicas na combustao catalitica do metano

    Energy Technology Data Exchange (ETDEWEB)

    Tabarelli, A.C.; Alves, A.K.; Bergmann, C.P., E-mail: andretabarelli@gmail.com [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Departamento de Materiais

    2012-07-01

    Methane, considered as the main constituent of natural gas has been widely used as an energy source. During its combustion are produced pollutants that cause concern and necessity to eliminate or reduce the emission of these agents in the atmosphere. One of the main means of controlling emissions is the use of catalysts. In order to contribute to the development of new catalysts, this study analyzed the morphology of ceramic fibers of cerium oxide (ceria) doped with copper fabricated by electrospinning, in order to verify their effects on catalytic activity. Parameters were varied in distance from the electrodes, the diameter of the capillary and applied voltage between electrodes. The characterizations were performed: scanning electron microscopy, thermogravimetric analysis, BET and Xray diffraction (DXR). The results indicate that after the thermal treatment there was a reduction of approximately 40% fiber diameter and specific surface area ranging between 28.929 and 34.501 m{sup 2}/g. (author)

  6. Frequency-dependent friction and its significance for liquid pipeline simulation; Influencia do fator de atrito com dependencia da frequencia na simulacao de transientes em oleodutos

    Energy Technology Data Exchange (ETDEWEB)

    Tepedino, Alexandre F. [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil); Rachid, Felipe B. Freitas [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Programa de Pos-Graduacao em Engenharia Mecanica. Lab. de Transporte de Liquidos e Gases

    2008-07-01

    Unsteady liquid flow in pipelines is usually described by using one-dimensional models and, in a procedure referred to as quasi-steady approximation, friction losses are estimated by formulae derived for steady state flow conditions. The assumption is that the friction loss during transient flow conditions can be approximated by the friction loss obtained for a steady flow with the same average velocity. However, during unsteady flow conditions the velocity profile can be considerably different from the steady flow. The shear stress at the pipe wall and the mean velocity are not in phase. Therefore, friction losses computed according to the quasi-steady approximation are inaccurate. To overcome this, the concept of frequency-dependent friction was proposed, including the time history of the mean flow velocity and acceleration, resulting in better correlation to experimental data. This work presents an investigation of situations in which the use of a frequency-dependent friction model could bring additional improvement for the petroleum and products pipeline simulation. To do so, through computer simulations, the predictions of both quasi-steady and unsteady friction models, for short and long lines, operating under a range of Reynolds numbers, are compared and the significance of the friction model is evaluated. (author)

  7. Influence of chemical composition in crystallographic texture Fe-Cr-Mo alloys; Influencia da composicao quimica na textura cristalografica de ligas Fe-Cr-Mo

    Energy Technology Data Exchange (ETDEWEB)

    Moura, L.B.; Guimaraes, R.F. [Instituto Federal de Educacao, Ciencia e Tecnologia do Ceara, Fortaleza, CE (Brazil). Dept. da Industria; Abreu, H.F.G. [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil)

    2010-07-01

    The use of steels with higher contents of Mo in the oil industry has been an alternative to reduce the effect of naphthenic corrosion in refining units. The addition of Mo in Fe-Cr alloys in the same manner that increases resistance to corrosion naphthenic causes some difficulties such as difficulty of forming, welding and embrittlement. In this work, experimental ingots of Fe-Cr-Mo alloys (Cr - 9, 15 and 17%, Mo - 5, 7 and 9%) were melted in vacuum induction furnace and hot and cold rolled in a laboratory rolling mill. The influence of chemical composition on crystallographic texture of samples subjected to the same thermo-mechanical treatment was analyzed by x-ray diffraction. The results indicate that fiber (111) becomes more intense with increasing Mo and/or Cr contents. (author)

  8. Influence of the inter-layer adhesion on the structural strength of sandwich pipes; Influencia da adesao entre camadas na resistencia estrutural de dutos sanduiche

    Energy Technology Data Exchange (ETDEWEB)

    Castello, Xavier; Estefen, Segen [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia. Programa de Engenharia Oceanica

    2005-07-01

    Sandwich pipes composed of two steel layers separated by a polypropylene annulus can be used for the transport of oil and gas in deep waters, combining high structural resistance with thermal insulation in order to prevent blockage by paraffin and hydrates. In this work, sandwich pipes with typical inner diameters of those employed in the offshore production are analyzed numerically regarding to the influence of the inter-layer adhesion of steel pipes and polymer on the limit strength under external pressure and longitudinal bending as well as the bending and straightening process representative of the reeling installation method. The numerical model incorporates geometric and material non-linearity, which had been based on previous works of the authors. Tests of specimens under tension and segments of sandwich pipes are carried through to evaluate the maximum shear stresses of the interfaces metal-polymer. The adhesion is modeled by contact adopting a maximum shear stress value to allow the relative displacement between the layers. It was observed that the structural resistance of the sandwich pipe is strongly dependent on the shear stress acting at the interface, occurring the collapse of the pipe when the maximum shear stress is reached. The results obtained are analyzed to determine the minimum shear strength at the union which provides adequate structural resistance for the sandwich pipe under representative conditions of the installation and operation loading phases. (author)

  9. Solvents addition influence on the automotive gasoline gum formation; Influencia da adicao de solventes na formacao de goma em gasolinas automotivas

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Diocleciano P. dos; Teixeira, Leonardo Sena Gomes; Almeida, Selmo Queiroz; Pontes, Luiz Antonio Magalhaes; Vitor Sobrinho, Eledir; Guimaraes, Paulo Roberto Britto; Vianna, Regina Ferreira [Universidade Salvador - UNIFACS, Salvador, BA (Brazil). Dept. de Engenharia e Arquitetura]. E-mail: leonardoteixeira@unifacs.br

    2003-07-01

    The unlawful addition of hydrocarbons such as kerosene, thinner, turpentine and diesel oil to gasoline has been often observed in Brazil lately. This not only results in undeserved market advantage, but may also cause serious damage to the consumer and to the environment, since it may change several physicochemical properties of the fuel, reduce engine performance and increase fuel consumption. Among the former, some of the most important are the distillation curve, octane number and the tendency for gum formation. This contribution is concerned with the analysis of the influence of a number of commercially available hydrocarbons on the tendency for gum formation of gasoline. The analytical method used was ASTM D381, and results indicate that for some of the hydrocarbons tested there is a marked increase in gum formation, and in some cases may be higher than the limit specified by law. (author)

  10. Influence of sintering temperature in red ceramic with addition of mill scale; Influencia da temperatura de sinterizacao em ceramica vermelha com adicao de carepa/residuo de laminacao

    Energy Technology Data Exchange (ETDEWEB)

    Arnt, A.B.C.; Rocha, M.R.; Bernardin, A.M.; Meller, J.G., E-mail: anb@unesc.ne [Universidade do Extremo Sul Catarinense (UNESC), Criciuma, SC (Brazil). Engenharia de Materiais. Lab. de Fenomenos de Superficies e Tratamentos Termicos

    2010-07-01

    This study aimed to evaluate the influence of sintering temperature in a red ceramic body with the addition of mill scale. This residue consists of oxides of iron had to replace the function of pigments used in ceramic materials. After chemical characterization, by X-ray diffraction, X-ray fluorescence and scanning electron microscopy, this residue was added at a rate of 5% in commercial ceramic past. The formulations were subjected to different burn temperatures of around 950 deg C, 1000 deg C and 1200 deg C. The formulations were evaluated for physical loss to fire, linear firing shrinkage, water absorption and flexural strength by 3 and intensity of tone. The results indicate that the different firing temperatures influence the strength and stability of tone in the formulations tested. (author)

  11. Influence of the stacking sequence of layers on the mechanical behavior of polymeric composite cylinders; Influencia da configuracao de bobinagem no comportamento mecanico de cilindros de composito polimerico

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Osni de

    2006-07-01

    This work evaluated experimentally the influence of the stacking sequence of layers symmetrical and asymmetrical on the mechanical behavior of polymeric composite cylinders. For so much, two open-ended cylinders groups were manufactured by filament winding process, which had different stacking sequence related to the laminate midplane, characterizing symmetrical and asymmetrical laminates. The composite cylinders were made with epoxy matrix and carbon fiber as reinforcement. For evaluation of the mechanical strength, the cylinders were tested hydrostatically, which consisted of internal pressurization in a hydrostatic device through the utilization of a fluid until the cylinders burst. Additionally, were compared the strains and failure modes between the cylinders groups. The utilization of a finite element program allowed to conclude that this tool, very used in design, does not get to identify tensions in the fiber direction in each composite layer, as well as interlaminar shear stress, that appears in the cylinders with asymmetrical stacking sequence. The tests results showed that the stacking sequence had influence in the mechanical behavior of the composite cylinders, favoring the symmetrical construction. (author)

  12. Temperature influence on biodiesel production by non-catalytic transesterification; Influencia da temperatura na producao de biodiesel por transesterificacao nao catalitica

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Humberto N.M.; Oliveira, Thomas R.; Sousa, Elisa M.B.D. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2008-07-01

    The main objective of this paper is to produce biodiesel using supercritical fluids through of the transesterification process without use of catalysts. It become easier the separation of the reaction products when compared with conventional method. In this work the influence of the temperature in the production of biodiesel from mamona oil was studied. Tree temperatures were studied (473.15 K, 523.15 K and 573.15 K) and the pressure (300 bar) and molar ratio (1:40) was keep constant during the process. Excess of Alcohol was used for this synthesis. The influence of temperature on the conversion and the reaction time was evaluated. The castor bean oil and biodiesel obtained were characterized in relation to their properties more significant. For results, higher conversions were found at higher temperatures (573.15 K), however can see a trend to the stability of reaction. The quality of the product was suitable for most properties evaluated. The equipment designed and built for this purpose was feasible but require some modifications to its optimization. The reaction of biodiesel production was confirmed, even without the addition of catalyst. It was the need to use a large excess of alcohol in relation to oil on this route without catalytic converters. In the case of the route of biodiesel production without the addition of catalysts, was felt the need to use excess alcohol in relation to the castor bean oil. (author)

  13. The kinematic viscosity influence on energetic cost of oil pipeline flow; Influencia da viscosidade cinematica sobre o custo energetico no escoamento de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Lucena, Kennedy F.M. [Centro Federal de Educacao Tecnologica da Paraiba (CEFET-PB), Joao Pessoa, PB (Brazil); Torres, Euriclides G.; Lacerda, Ivonaldo de S.; Machado, Erica C.M.N. [Universidade Federal de Campina Grande, PB (Brazil)

    2005-07-01

    In the petroleum pipelines flow the objective of the maximum production with the minor cost is desired, considering the techniques, operational and administrative restrictions. One of the biggest difficulties in the pipelines flow is related to increase of viscosity that the fluids produced can present and to the variations during the transport. In this study had been analyzed through computational simulations, using Smart Pumping software, the hydraulic behavior of the network and the operational cost with energy consumption, in function of the variation of the viscosity. Two scenes had been simulated, using a initial kinematic viscosity of 3,029x10{sup -5} m{sup 2}/s, that it was reduced gradually until the minimum limit of 10% of initial viscosity, remaining the too much constant the fluid properties. In scene 1 it was verified that the reduction of viscosity implied in the reduction of the energy cost in up to 14,53%, increase of the daily production in up to 3,88% and the reduction in the cost for m3 flowed off in up to 17,73%, without alterations in the operations. Scene 2 presented similar behavior to scene 1, however, had been necessary interventions to get operations that did not violate the restrictions. The results had ratified the interference of viscosity in the operations and the system petroleum flow costs. (author)

  14. Influence of calcination temperature on the structure and morphology of HAp bioceramics; Influencia da temperatura de calcinacao na estrutura e morfologia de bioceramica de HAp

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, C.M.L.; Santos, P.T.A.; Rodrigues, P.A.; Costa, A.C.F.M. [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Unidade Academica de Engenharia de Materiais

    2012-07-01

    This study aimed to evaluate the influence of calcination temperature on the structure and morphology of samples of hydroxyapatite (HAp) synthesized by the wet method. For hydroxyapatite was used as precursor solutions of calcium hydroxide and phosphoric acid 1M solution of calcium hydroxide was stirred and heated to 80 ° C and then dropwise with a solution of phosphoric acid. After the liquid was evaporated without an oven at 110 ° C and sieved. The sample of PA as synthesized was submitted to calcination at 900 °C and 1100 °C / 2 hours. The samples as synthesized and after calcination were characterized by XRD, XRF, FTIR, SEM. The XRD showed the presence of phase hydroxyapatite for samples without calcining and both calcination temperatures studied. FTIR spectra showed bands group and PO{sub 4}{sup 3-}, CO{sub 3}{sup 2-}. Through the SEM micrograph, there is the formation of agglomerates in the form of porous flakes approximately spherical shape. (author)

  15. Influence of the use of organoclays on the morphology of PP/EPDM blends; Influencia da utilizacao de argilas organofilicas na morfologia de misturas PP/EPDM

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, K.R.M.; Andrade, D.L.A.C.S.; Raposo, C.M.O.; Silva, S.M.L., E-mail: suedina@dema.ufcg.edu.br [Universidade Federal de Campina Grande (UFCG/UAEMa), PB (Brazil). Unidade Academica de Engenharia de Materiais

    2012-07-01

    This study evaluated the influence of different organoclays on morphology of PP/EPDM blends. Two organobentonite (MPH and MPTH), provided by Laboratory of physical chemistry of the Academic Unit of Mining and Geology/UFCG/Campina Grande/PB and a montmorillonite (Cloisite 20A - C20A), provided by Southern Clay Products (Texas/USA) were added to the PP/EPDM polymer blend in order to obtain nanocomposites containing 1 phr of organoclay. The blends of PP/EPDM/organoclay were prepared by melt intercalation process, in an internal mixer coupled to the Haake Torque Rheometer, operating at 180 ° C and 50 rpm for 15min. The samples were characterized by X-ray diffraction and scanning electron microscopy. The results show that the type of organoclay modified the morphology of PP/EPDM blends. (author)

  16. Influence of processing temperature on the rheological behavior of PCL/MMT nanocomposites;Influencia da temperatura de processamento no comportamento reologico de nanocompositos de PCL/MMT

    Energy Technology Data Exchange (ETDEWEB)

    Marini, Juliano; Beatrice, Cesar A.G.; Favaro, Marcia M.; Bretas, Rosario E.S., E-mail: bretas@power.ufscar.b [Universidade Federal de Sao Carlos (PPG-CEMUFSCar), SP (Brazil). Programa de Pos-Graduacao em Ciencia e Engenharia de Materiais; Branciforti, Marcia C. [Universidade Federal de Sao Carlos (DEMa/UFSCar), SP (Brazil). Dept. de Engenharia de Materiais

    2009-07-01

    Polycaprolactone (PCL) is a biodegradable polymer; however, this polymer had low mechanical strength, limiting its applications. The addition of a lamellar silicate (MMT) can alter this behavior, especially when the filler is well dispersed and distributed thru the polymeric matrix. In this work the influence of the processing temperature in the structure of PCL/MMT nanocomposites was studied. The nanocomposites were obtained by melt intercalation in a Haake rheometer at two temperatures: 80 and 120 deg C. Wide angle X-ray analysis showed that the intercalation of the polymer chains into the clay's galleries was not influenced by the processing temperature. However, the steady state and dynamic rheological properties showed that the higher the processing temperature the better the dispersion and distribution of the clay thru the matrix, without having polymer degradation. (author)

  17. Até que ponto o bullying influencia o aumento da demanda por educação de jovens e adultos?

    Directory of Open Access Journals (Sweden)

    Márcio Jacometti

    2014-08-01

    Full Text Available This article aims to describe the process of bullying occurring in schools as a possible cause of school dropout and increasing demand for youth and adult education (YAE observed in the current Brazilian educational context, in order to seek an answer to the question mooted. This is a theoretical and empirical descriptive essay that uses secondary sources and the life experience of the researchers on bullying to make the analysis. It was shown that public schools are far from being a democratic space always being a hostile environment that discourages the retention of students in regular education. Moreover, many educators are anxious to consolidate the school as a place of wellness, that fighting violence and form new citizens, visualizing the YAE as a way to reverse the process of evasion and bullying. Other researches suggest that the influence of bullying on school dropout is discrete. From these findings, the paper explores ossible causes of truancy and the demand by YAE and recommends further research to clarify these issues and the consequences of the bullying process.

  18. Até que ponto o bullying influencia o aumento da demanda por educação de jovens e adultos?

    OpenAIRE

    Márcio Jacometti; Luciano Blasius; Márcio José Polido; Murilo Martins de Andrade

    2014-01-01

    This article aims to describe the process of bullying occurring in schools as a possible cause of school dropout and increasing demand for youth and adult education (YAE) observed in the current Brazilian educational context, in order to seek an answer to the question mooted. This is a theoretical and empirical descriptive essay that uses secondary sources and the life experience of the researchers on bullying to make the analysis. It was shown that public schools are far from being a dem...

  19. Influência recíproca entre atividade profissional e vida familiar: percepção de pais/mães Influencia recíproca entre actividad profesional y vida familiar: percepción de padres/madres Reciprocal influence between professional activity and family life: perceptions of fathers/mothers

    Directory of Open Access Journals (Sweden)

    Laurelize Pereira Rocha

    2011-01-01

    Full Text Available OBJETIVO: Mensurar a influência, tanto da vida familiar na atividade profissional como da atividade profissional na vida familiar. MÉTODOS: Estudo exploratório descritivo de abordagem quantitativa, que utilizou um questionário com duas versões - feminina e masculina - aplicado em amostra de 92 casais com filhos de idade até seis anos, residentes na cidade do Rio Grande - RS. RESULTADOS: Constatou-se que o cansaço físico e mental relacionado ao trabalho, influenciou nas tarefas familiares, causando desânimo e irritabilidade. Os homens apresentaram maior preocupação com o pouco tempo disponível em família em razão da profissão. Visualizou-se como muito influente o apoio familiar, tornando o diálogo contribuinte na resolução dos problemas profissionais e na criação de um ambiente propício ao enfrentamento dos desafios impostos pelo trabalho. Os pais consideraram que a vida familiar não prejudica sua atividade profissional, mas referiram influência do pensamento familiar no trabalho. CONCLUSÃO: Poucas influências foram identificadas que prejudicam a conciliação entre vida familiar e atividade profissional, o que, no geral, contrariou demais estudos encontrados na literatura.OBJETIVO: Medir la influencia, tanto de la vida familiar en la actividad profesional como de la actividad profesional en la vida familiar. MÉTODOS: Estudio exploratorio descriptivo de abordaje cuantitativo, que utilizó un cuestionario con dos versiones - femenina y masculina - aplicado en una muestra de 92 parejas con hijos de edad hasta seis años, residentes en ciudad de Rio Grande - RS. RESULTADOS: Se constató que el cansancio físico y mental relacionado al trabajo, influyó en las tareas familiares, causando desánimo e irritabilidad. Los hombres presentaron mayor preocupación con el poco tiempo disponible para la familia en razón de la profesión. El apoyo familiar se visualizó como muy influyente, volviéndose el diálogo como contribuyente

  20. Las abejas de Porce familia colletidae (hymenoptera: apoidea notas y claves para los géneros presentes en la zona de influencia del embalse Porce ii.

    Directory of Open Access Journals (Sweden)

    Smith Pardo Allan H.

    1999-12-01

    Full Text Available Se presentan claves taxonómicas a nivel de género para la identificación de las abejas colletidas de la zona de Influencia del Embalse Porce II (Porce, Antioquía, Colombia S.A. Adicionalmente se presentan algunas notas para los géneros de colletidos capturados durante el inventario de las abejas silvestres de la zona.

  1. Influencia del grado de obesidad sobre la respuesta lipémica postprandial a diferentes tipos de grasa e jóvenes sanos

    OpenAIRE

    Lozano Rodríguez-Mancheño, Aquiles

    2016-01-01

    Introducción: Las lipoproteínas ricas en triglicéridos (LRT) postprandiales son predictivas del desarrollo de enfermedad cardiovascular. La obesidad está asociada a un aumento de la magnitud de la lipemia postprandial. Las citoquinas producidas en el tejido adiposo, adipocinas, juegan un importante papel en el desarrollo de resistencia a la insulina, diabetes y enfermedad cardiovascular. Objetivo: Evaluar la influencia que tiene el índice de masa corporal (IMC) en el e...

  2. Estudio de la influencia de la refrigeración con aire de forma natural e inducida en el comportamiento de instalaciones fotovoltaicas

    OpenAIRE

    Mazón Hernández, Rocío

    2014-01-01

    [ESP] Este estudio se centra en analizar la influencia negativa de la temperatura en la producción eléctrica de paneles fotovoltaicos al estar emplazados sobre cubierta de acero, como sucede en naves industriales y sobre un invernadero. Se estudian diferentes configuraciones que permitan refrigerar los paneles, reduciendo su temperatura y mejorar su rendimiento. Para abordar este problema, se han construido dos instalaciones experimentales, fieles a plantas solares en funcionamiento. Una inst...

  3. La Influencia de la Transición Española en el Modelo Centroamericano de Transición Política

    OpenAIRE

    Fernandez-Garcia, Jesus

    2005-01-01

    El objetivo de la presente ponencia es hacer un esfuerzo de análisis comparativo entre los procesos de España y Centroamérica, fundamentalmente los de Nicaragua, El Salvador y Guatemala, señalando sus coincidencias y divergencias y sobre todo identificando la influencia del modelo español en los procesos llevados a cabo en el istmo.

  4. Geología de la zona de influencia de la falla otú en el distrito minero segovia-remedios

    Directory of Open Access Journals (Sweden)

    MILTON ÁLVAREZ GALINDEZ

    2007-01-01

    Full Text Available Se presenta la caracterización geológica y estructural de la zona de influencia de la falla Otú en jurisdicción del distrito minero Segovia-Remedios. Además, se proponen controles mecánicos para las mineralizaciones auríferas, que si bien son compatibles, en parte, con un modelo de depósitos de oro orogénico, dejan abiertas otras posibles interpretaciones

  5. Influencia del M??todo Pilates sobre la condici??n f??sica-salud en sujetos j??venes sanos

    OpenAIRE

    Tinoco Fern??ndez, Mar??a

    2012-01-01

    Valoraci??n de la influencia del m??todo pilates sobre la condici??n f??sica-salud y calidad de vida en universitarios jovenes y sanos, durante un programa de intervenci??n de diez semanas, tres d??as a la semana con una hora de duraci??n diaria, a trav??s del entrenamiento del m??todo pilates en su modalidad de suelo.

  6. Papel da titina na modulação da função cardíaca e suas implicações fisiopatológicas

    Directory of Open Access Journals (Sweden)

    Ricardo Castro-Ferreira

    2011-04-01

    Full Text Available A titina é uma proteína sarcomérica gigante que se estende desde a linha Z até a linha M. Em razão de sua localização, representa um importante sensor biomecânico com um papel fundamental na manutenção da integridade estrutural do sarcômero. A titina funciona como uma "mola bidirecional" que regula o comprimento sarcomérico e realiza ajustes adequados da tensão passiva sempre que o comprimento varia. Dessa forma, não só determina a rigidez ventricular e a função diastólica, como também influencia a função cardíaca sistólica, modulando o mecanismo de Frank-Starling. O miocárdio expressa duas isoformas dessa macromolécula: a N2B, mais rígida, e a isoforma N2BA, mais complacente. As alterações na expressão relativa das duas isoformas da titina ou alterações do seu estado de fosforilação têm sido implicadas na fisiopatologia de várias doenças como a insuficiência cardíaca diastólica, a cardiomiopatia dilatada, a cardiomiopatia isquêmica e a estenose aórtica. Neste artigo pretende-se descrever sumariamente a estrutura e localização da titina, a sua relação com diferentes cardiomiopatias, e compreender de que forma as alterações dessa macromolécula influenciam a fisiopatologia da insuficiência cardíaca diastólica, salientando o potencial terapêutico da manipulação dessa macromolécula.

  7. O esvaziamento da cultura

    Directory of Open Access Journals (Sweden)

    Andressa Paula de Andrade

    2015-01-01

    Full Text Available Trata-se da resenha da obra "A civilização do espetáculo: uma radiografia do nosso tempo e da nossa cultura" de autoria de Mario Vargas Llosa, ganhador do Nobel de Literatura em 2010. O trabalho busca compreender este tempo em que a diversão assume maior relevância em detrimento da cultura profunda e reflexiva. Destarte, a todo momento se olha para o passado com vistas a examinar este fenômeno que se tornou um verdadeiro "esvaziamento cultural". Outrossim, busca-se elucidar que embora ocorra um progresso científico, acesso a educação e a tecnologia de forma vertiginosa, isso não significa que a as artes avançaram na mesma velocidade, pelo contrário, acabou estagnando e já não visa mais a modificação de estruturas, mas apenas entreter.

  8. Dj Da Hai

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Miko Da Hai is DJ at a Xi’an disco bar. At work, in his cool attire, the pulsing disco beat punctuated by his distinctive vocal commentary, he makes a striking impression. The job having come his way by chance, Miko is now a skilled and experienced DJ of eight years’ standing. This may be

  9. AS IMPLICAÇÕES DA CULTURA ORGANIZACIONAL NO PROCESSO DE INOVAÇÃO NAS ESCOLAS DE SAMBA DA CIDADE DE SÃO PAULO: O CASO DA ESCOLA DE SAMBA VAI VAI

    Directory of Open Access Journals (Sweden)

    Márcio Cardoso Santos

    2011-12-01

    Full Text Available Já se tornou notória a mobilização de milhares de pessoas para prestigiar o carnaval paulistano. Como o evento é atrativo turístico da cidade, é considerado motivo para investimentos do governo em obras públicas. Diante da relevância do evento carnavalesco, da estrutura complexa das agremiações e o alto nível de competitividade nos desfiles, este trabalho tem como propósito explorar o carnaval como fonte de inovação e organização. Acredita-se que o evento carnavalesco deve ser analisado não só como espetáculo, mas como fonte de teorias para a área dos estudos organizacionais. Como a investigação compreende um objeto pouco comum, as Escolas de Samba, o procedimento metodológico que melhor se enquadrou foi uma pesquisa exploratória de cunho empírico, por meio de estudo de caso e levantamento bibliográfico. A liderança é responsável por um ambiente de incentivo a interação e o aprendizado contínuo, enfatizando as competências e habilidades dos integrantes, como meio de promover ações inovadoras. Compreende-se que a inovação exige um processo metodológico para ser adotada e desenvolvida nas organizações, mas já foi possível notar que a Escola de Samba Vai Vai, dispõe de ambiente e histórico propício para ações de inovação, o que provavelmente influencia o seu bom desempenho nos desfiles.

  10. Atores e ações na construção da governança corporativa brasileira

    Directory of Open Access Journals (Sweden)

    Grün Roberto

    2003-01-01

    Full Text Available Este ensaio procura analisar a evolução da cena econômica e institucional brasileira que vem produzindo uma nova relação entre as grandes empresas, seus acionistas e os intermediários financeiros e espraiando suas conseqüências sobre os sindicatos e a previdência. O autor aborda as vicissitudes das tentativas de instalação no Brasil do modelo de governança corporativa, usando as câmaras setoriais como um contraponto cognitivo. Apresenta também algumas particularidades da tramitação recente das leis que regulam a governança corporativa, enfocando as dificuldades enfrentadas pelos agentes que tentam trazer esse conceito, oriundo do mundo financeiro anglo-saxão, para a cena brasileira. A discussão pretende mostrar que, de um lado, as dificuldades são expressão da resistência do modelo de capitalismo brasileiro, que passa, atualmente, por um processo de deslegitimação causado pela prevalência dos partidários da globalização, considerados os intelectuais orgânicos das elites dominantes do momento; de outro, que os atores "globalizantes" recebem uma ajuda decisiva e aparentemente inesperada das cúpulas do movimento sindical, o que influencia bastante a disputa econômica e política travada em torno da implantação ou não da governança corporativa e seus contornos.

  11. Influência do consumo alimentar na gestação sobre a retenção de peso pós-parto Influencia del consumo alimentario en la gestación sobre la retención de peso post-parto Influence of dietary intake during gestation on postpartum weight retention

    Directory of Open Access Journals (Sweden)

    Ana Paula Bortoletto Martins

    2011-10-01

    Full Text Available OBJETIVO: Avaliar a influência da alimentação durante a gestação sobre a retenção de peso pós-parto. MÉTODOS: Foram acompanhadas 82 gestantes adultas e saudáveis que iniciaram o pré-natal em serviço público de saúde no Município de São Paulo, SP, entre abril e junho de 2005. As medidas de peso e estatura foram aferidas na primeira entrevista (até 16 semanas de gestação e a medida de peso foi repetida em visita domiciliar 15 dias após o parto. O Recordatório de 24 horas foi usado para avaliar o consumo alimentar e foi aplicado nos três trimestres da gestação. Foi calculado o consumo médio de gordura saturada, fibras, açúcar adicionado, refrigerantes, alimentos processados, frutas, verduras e legumes, e a densidade energética da dieta. A retenção de peso foi obtida pela diferença entre a medida de peso pós-parto e a primeira medida realizada. A influência da alimentação sobre a retenção de peso pós-parto foi avaliada por meio de análise de regressão linear múltipla e foi realizado o teste para tendência linear. As variáveis utilizadas para ajuste do modelo foram: índice de massa corporal no início da gestação, estatura, renda familiar per capita, tabagismo, idade e escolaridade. RESULTADOS: O índice de massa corporal inicial médio foi de 24 kg/m² e a retenção média de peso foi de 1,9 kg. O aumento do consumo de gordura saturada (p = 0,005 e alimentos processados (p = 0,014 elevou de forma significativa a retenção de peso pós-parto, após ajuste pelas variáveis de controle. As demais variáveis de consumo alimentar não apresentaram relação significativa com a variável desfecho. CONCLUSÕES: O maior consumo de alimentos não saudáveis, como alimentos processados, e de gordura saturada influencia a elevação da retenção de peso pós-parto.OBJETIVO: Evaluar la influencia de la alimentación durante la gestación sobre la retención de peso post-parto. MÉTODOS: Fueron acompañadas 82

  12. Uma Análise Multidimensional da Pobreza dos Municípios Paranaenses em 2010

    Directory of Open Access Journals (Sweden)

    Ana Eloísa Giovanetti

    2015-06-01

    Full Text Available O presente trabalho traz uma análise multidimensional da pobreza para os municípios do estado do Paraná, no ano de 2010. Para isso, construiu-se um indicador de pobreza multidimensional (usando o método fuzzy, analisando a proximidade dos municípios quanto aos resultados (estatística I de Moran, estimando, na sequencia, os fatores determinantes dessa pobreza, via econometria espacial. Como resultado observou-se uma concentração dos melhores resultados nas regiões oeste e norte do Paraná. Como determinantes da condição de pobreza, identificaram-se os seguintes fatores, cuja influencia é positiva (ou seja, que tende a elevar a condição de pobreza: razão de dependência, população rural e índice de Gini. E os que exercem efeito negativo (retraindo o índice são: escolaridade, PIB e emprego per capita. Além disso, a defasagem espacial se mostrou relevante, indicando que a pobreza em um determinado município é explicada positivamente pela incidência de pobreza nos municípios vizinhos.

  13. Transitoriedade ou o desterro da certeza

    Directory of Open Access Journals (Sweden)

    Paulo José Carvalho da Silva

    2012-12-01

    Full Text Available O tema da transitoriedade era lugar-comum da medicina da alma da primeira modernidade. Este artigo analisa algumas dessas fontes para mostrar como a dor do tempo e os males da alma atinentes eram relacionados a um modo de encarar a fugacidade do tempo e a fragilidade da vida. Dá-se destaque, sobretudo, às construções em torno da condição humana enquanto desterro da certeza.

  14. Influencia de los factores microestructurales en la resistencia al desgaste por deslizamiento de las fundiciones nodulares austemperadas

    Directory of Open Access Journals (Sweden)

    C. J. Diez Cicero

    2008-09-01

    Full Text Available Entre los materiales metálicos de mayor demanda, el hierro dúctil con grafito esferoidal o nodular ocupa en la actualidad uno de los lugares más importantes entre los hierros fundidos de alta resistencia. Desde hace unos veinticinco años la introducción del hierro nodular austemperado significó de hecho una revolución en el campo de las aleaciones ferrosas. En el presente trabajo se realiza un estudio de la influencia del conteo de nódulos de grafito del hierro nodular en el proceso de austemperado, a partir de las características de las estructuras obtenidas, por la variación de la cantidad de nódulos de grafito y de las variables de tratamiento térmico. Dichas estructuras son sometidas a la acción del desgaste, en este caso a un desgaste por deslizamiento mediante un ensayo típico disco-zapata. Con los resultados obtenidos, se realiza un análisis estadístico de la influencia del conteo de nódulos en dichas propiedades y de las causas de este comportamiento, tomando en consideración la interrelación del conteo de nódulos con las variables de tratamiento térmico utilizadas en las muestras ensayadas y su incidencia en el mecanismo de desgaste.A study about the influence of the graphite nodules quantity and some heat treatment parameters in the characteristic of cast ductile iron is presented. Experimental investigation of wear resistance by sliding is applied to specimens tested of austempered ductile irons using a test machine based in the disc- plate system. Statistical analysis about the influence of the graphite nodule quantity in the wear resistance properties, so as well as, the causes of this behaviour taking into account the graphite nodule count and some heat treatment variables is don.

  15. Influencia del tratamiento de la queratoconjuntivitis seca en la capacidad funcional y afectiva de los adultos mayores con artritis reumatoidea

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    Sandra Saray Quignón Santana

    2012-06-01

    Full Text Available Fundamento: en Cuba se han realizado algunos estudios sobre la afectación ocular en los pacientes con artritis reumatoidea, sin embargo no se han encontrado referencias al comportamiento de la queratoconjuntivitis seca en el adulto mayor aquejado de esta enfermedad, ni su influencia en la capacidad funcional y afectiva del individuo. Objetivo: determinar la influencia del tratamiento de la queratoconjuntivitis seca en la capacidad funcional y afectiva de adultos mayores con diagnóstico de artritis reumatoidea. Métodos: estudio de serie de casos realizado durante el año 2009, en el Departamento de Córnea del Hospital General Universitario Dr. Gustavo Aldereguía Lima de Cienfuegos, que incluyó 75 adultos mayores con diagnóstico de artritis reumatoidea que padecían de  queratoconjuntivitis seca. Se aplicó el instrumento de valoración cognitiva Mini-mental y la escala de evaluación social, así como la escala de depresión geriátrica de Yesavage y el índice de Katz. Se indicó tratamiento y se llevó a cabo seguimiento de los pacientes con una valoración de las pruebas diagnósticas y de la evaluación geriátrica al tercer mes. Resultados: el punteado epitelial disminuyó en las distintas localizaciones; el tiempo de ruptura de la película lagrimal aumentó; no se observaron variaciones en la evaluación funcional en las actividades básicas de la vida diaria, independientemente del tratamiento ocular y seguimiento periódico de los pacientes, pero sí en la evaluación del estado depresivo, que mejoró. Conclusiones: el tratamiento de la queratoconjuntivitis seca puede facilitar la disminución de los trastornos afectivos como la depresión menor en los adultos mayores con artritis reumatoidea.

  16. Estudio de la influencia de la automatización en el proyecto arquitectónico

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    Millán-Anglés, S.

    2014-06-01

    Full Text Available Integrated automation may have a fundamental role in the architecture of the future. However, until today the home automation is not a factor taken into account from the architectural design and this impedes this discipline to be generalised in order to reshape the future of these new buildings. Therefore, there is a need for a thorough study of the influence on constructive and projective aspects that exist in domotics and home automation. To develop this research there have been isolated the constructive and projective conditions detected in home automation, conditions that should be taken into account from the design stage to promote the implementation of new technologies in buildings in order to ensure the viability of these new facilities. This article analyzes, therefore, the main constructive and projective considerations being detected in the study of the influence of home automation on how to design an architectural project.La domótica integrada puede terminar jugando un papel fundamental en la arquitectura del futuro. Sin embargo, hasta hoy la automatización doméstica no es un factor tenido en cuenta desde el proyecto arquitectónico y este hecho hace que esta disciplina no se generalice para replantear el futuro de estas nuevas construcciones. Por ello, se plantea la necesidad de un estudio profundo de la influencia sobre los aspectos constructivos y proyectuales que existen en la domotización y automatización de viviendas. Para desarrollar esta investigación se han aislado los posibles condicionantes de la automatización, condicionantes que deberían tenerse en cuenta desde la fase proyecto para fomentar la implantación de las nuevas tecnologías en los edificios y así garantizar la viabilidad de estas nuevas instalaciones. El presente artículo analiza, por tanto, las principales consideraciones de carácter constructivo y proyectual que se están detectando en el estudio de la influencia de la domótica sobre la forma de

  17. Influencia de la diabetes mellitus en el resultado de la terapia antituberculosa

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    José Maya

    2001-04-01

    Full Text Available

    Los pacientes diabéticos son más propensos a las infecciones
    bacterianas, entre ellas la tuberculosis. Se ha informado que esta entidad es 3-4 veces más frecuente en pacientes diabéticos que en los que no lo son y la severidad de esta enfermedad parece correlacionarse con el grado de actividad tuberculosa. Además, la tuberculosis por sí misma puede agravar la diabetes.
    Es frecuente en estos pacientes hallar que están afectados los
    lóbulos inferiores del pulmón y que existe enfermedad cavitaria; finalmente, la proporción de baciloscopias positivas es mayor en estos pacientes. En el diabético se presentan alteraciones de orden inmune reflejadas en la disfunción de los neutrófilos polimorfonucleares, en niveles bajos de IFNγ e IL-12, al igual que de IL-10. Lo anterior conlleva una pobre respuesta clínica al tratamiento anti-TB, por lo cual se recomienda prolongar la segunda fase del mismo hasta completar 9 meses. Durante el tratamiento es muy importante el control estricto de los niveles de glucosa plasmática para la prevención de una recaída de la infección tuberculosa.

     

  18. Influencia del clima familiar en el proceso de adaptación social del adolescente

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    Julio César Verdugo Lucero

    2014-01-01

    Full Text Available El propósito de la investigación es conocer la relación del clima fa - miliar con el proceso de adaptación social de adolescentes (hombres y mujeres, estudiantes de bachillerato con edades entre los 15 y 19 años (media = 17 y de =1. La muestra fue de 146 participantes; 82 mujeres (56% y 64 hombres (44%, el 100% de los cuales pertenece a familias nucleares. Para recabar los datos se utilizaron el cuestionario “Como es tu familia / su familia” y la escala de adaptación social ( sass . Los resultados indican que a mayor cohesión en el funcionamiento familiar, el adolescente mostrará mayor capacidad de adaptación social. De acuerdo al género del adolescente se observa que en el caso de los hombres, el factor cohesión familiar mantiene una relación más fuerte con la variable adaptación social (r = .71, r 2 = .51 en comparación con la correlación que presentan las mujeres (r = .56, r 2 = .31. Lo anterior se explica desde el rol fundamental que la familia ocupa en nuestra cultura como pilar en la formación integral de los hijos y la educación de género que se les da según el sexo.

  19. O exame da OAB

    OpenAIRE

    Silva, Júlio Cezar Bittencourt

    2013-01-01

    Versa o trabalho sobre a exigência de aprovação em Exame de Ordem para a inscrição do advogado nos quadros da Ordem dos Advogados do Brasil. Tal requisito gera inúmeros disparates e injustiças, não apenas com os bacharéis, que têm cerceada sua garantia constitucional de exercício da profissão à qual estão qualificados, mas também à sociedade, que resta prejudicada pelos altos custos dos serviços de advocacia, bem como, pelo incremento das dificuldades de acesso à justiça. Procede-se então a u...

  20. Fisiopatologia da asma grave

    OpenAIRE

    Todo-Bom, Ana; Mota-Pinto, Anabela

    2006-01-01

    Não tem resumo. Transcreve-se o primeiro parágrafo: A história natural da asma e os condicionalismos de uma evolução para formas moderadas ou graves não está completamente estabelecida. Contudo, quer os factores genéticos quer os factores ambientais, serão determinantes na fisiopatologia e no prognóstico da doença. A asma é, por definição, uma doença inflamatória crónica das vias aéreas caracterizada por uma obstrução brônquica generalizada mas variável que é, pelo menos parcialmente, reve...

  1. El inductismo aritmético y su influencia en la enseñanza del número

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    Alfonso ORTIZ COMAS

    2009-11-01

    Full Text Available RESUMEN: En este artículo presentamos las características de una corriente epistemológica y matemática que hemos denominado inductivismo aritmético. Exponemos dos hechos fundamentales para la Educación Matemática, como son la confirmación de la influencia del inductivismo en los manuales de aritmética publicados en España desde el siglo XVI y su repercusión en la enseñanza de la aritmética del número natural. Además, exponemos algunas consideraciones inductivistas sobre las series y sucesiones de números naturales.ABSTRACT: Arithmetic Inductivism is an epistemological approach to Arithmetic with specific characteristics which are analysed in the present paper. Additionally, the two following fundamental facts for Mathematics Education are also explained: Firstly, the influence of inductivism trend on arithmetical concepts as it can be appreciated by examinning the books published in Spain since the XVIth century to now; secondly, its influence on teaching and learning natural numbers and school arithmetic. Finally, some remarks about inductive reasoning related to natural numbers series are included.

  2. Influencia de los factores modeladores sobre el efecto de borde, en un relicto de bosque altoandino en Colombia

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    Galeano Gloria

    2004-12-01

    Full Text Available La formación de paisajes fragmentados por las actividades humanas, genera ambientes contrastantes (matriz antrópica y bosque, que interactúan entre si a través de un límite o borde. Los ambientes en cercanía a los bordes son en general zonas transicionales donde el microclima, la vegetación y la fauna pueden verse afectados. El grado y tipo de afectación son determinados principalmente por características del paisaje (e.g. historia de uso, tipo de matriz, tipo de bosque y orientación, así como también por las características propias de las especies involucradas. De esta manera, para plantear programas de manejo y conservación en una determinada región, se hace necesario entender el efecto de borde sobre el ambiente y las comunidades biológicas. En la parte alta del municipio de Roncesvalles, Tolima, se realizó un estudio para evaluar el efecto de borde sobre variables microambientales y características de la vegetación, teniendo en cuenta
    la influencia de algunas de las características del paisaje (fisionomía, ubicación topográfica y orientación. Se eligió un fragmento de bosque altoandino donde se escogieron seis bordes con características de fisionomía, orientación y ubicación topográficas particulares. En cada segmento de borde se tomaron puntos de muestreo cada 10 m, desde 20 ó 30 m en el exterior hasta 60 m en el interior del bosque. En cada punto de muestreo se tomaron variables abióticas (temperatura del aire máxima, mínima y al medio día, temperatura máxima y mínima sobre el
    suelo y humedad relativa máxima y mínima y se realizaron parcelas de diferentes tamaños (1 x 1, 2 x 2, 5 x 5 y 25 x 5 para medir las variables bióticas (estructura y composición de la vegetación. En general para todos los bordes la temperatura del aire al medio día y la temperatura máxima sobre el suelo, presentaron una profundidad de influencia del borde (PIB hasta los 20 m dentro del bosque. Por otro lado, la

  3. INFLUENCIA DE LA LECTURA CRÍTICA EN LA REDACCIÓN DE TEXTOS CIENTÍFICOS CREATIVOS

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    Juana Guerrero García

    2015-07-01

    Full Text Available El artículo se centra en la lectura crítica como vía esencial para la redacción de textos científicos creativos, por ser un proceso mediante el cual se desarrolla el pensamiento crítico, reflexivo y autónomo, que resulta indispensable en la redacción científica de textos originales. Se argumenta la potencialidad de este tipo de lectura en la formación inicial de los docentes de la Educación Primaria, quienes tienen que estar preparados para poder incidir en sus alumnos y contribuir a que se redacten textos escolares creativos desde el nivel primario. Se realiza un análisis de la influencia que tiene la lectura crítica en el desarrollo de la creatividad de los educandos, desde la perspectiva de la concepción personológica; y se abordan las habilidades que hay que desarrollar en ellos para que sean capaces de juzgar lo que leen, de manera que sepan evaluarlo y con sus criterios y valoraciones redactar un texto científico creativo. El trabajo es resultado del proyecto de investigación La creatividad, la inteligencia y el talento como vías dirigidas a perfeccionar la didáctica del habla desde las disciplinas lingüístico-literarias en las universidades de ciencias pedagógicas.

  4. Interaccion de promastigotes de Leishmania donovani con celulas de exudado peritonial de ratones mediante la influencia de la quimotripsina

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    Lucila Arcay

    1986-06-01

    Full Text Available Se hace un estudio de la interacción de promastigotes de Leishmania donovani con células de exudado peritoneal de ratón (c e p mediante la influencia de la quimotripsina. La adhesión de los promastigotes a las c e p fue terminal y marginal, y en observaciones hechas a partir de los 10 minutos de enfrentamiento, esta adhesión fue nula hasta los 30 minutos en el grupo tratado, y sólo a las das horas hubo un pequeño incremento (2.4% con respecto al control. Se observa marcada disminución en todos los parámetro medidos, tales como enlace, penetración, multiplicación intracelular, división de formas flageladas, en el grupo tratado. La quimotripsina favorece la formación de formas intermedias flageladas, heciendose el parásito piriforme y esférico, apareciendo una forma aberrante de extremo anterior cilindrico que semeja a una forma coanoflagelada. Se sospecha que la enzima reduce efectivamente fragmentos proteicos o péptidos, los cuales pueden haber sido tan pequeños como para esconder a otros ligandos relacionados con la adhesión macrófago-parásito.

  5. El corte de rocas ornamentales con discos diamantados: influencia de los factores propios del sistema de corte

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    Suárez del Río, L. M.

    1998-06-01

    Full Text Available A review of some relevant papers about the cutting of ornamental stones with diamond tools is presented here with the aim of being useful to the Natural Stone industries. Due to the length of this paper, it has been divided in two parts: in the first one, the influence of the factors of the cutting equipments (machinery, disks, cutting characteristics, etc is reviewed, and in the second one, in the next number of this journal, attention will be paid to the intrinsic rock characteristics that influences its cuttability and, thus, the efficiency of the diamond tools.

    En este trabajo se hace una revisión de algunas publicaciones relevantes relacionadas con el corte de rocas ornamentales con discos diamantados, con el propósito de que pueda ser de utilidad a los industriales del Sector de la Piedra Natural Debido a la extensión del trabajo, se ha dividido en dos partes: en esta primera se analiza la influencia de los factores propios del sistema de corte (maquinaria, discos, características del corte, etc., y en la segunda parte, en un próximo número de esta revista, se hará hincapié en las características propias de la roca que influyen en su cortabilidad y, por tanto, en el rendimiento de los útiles diamantados.

  6. La influencia de la nueva derecha inglesa en la política educativa española (1996- 2004

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    Manuel de PUELLES BENÍTEZ

    2010-03-01

    Full Text Available RESUMEN: Este trabajo se centra en el estudio de la Nueva Derecha en Inglaterra durante los últimos años del siglo XX, teniendo como marco la política de la educación y las políticas educativas. Este estudio analiza las fuentes de la Nueva Derecha en lo que respecta a la educación —génesis, evolución, ideología, relaciones— y muestra la influencia que la política inglesa ejerció sobre la política educativa española de los años 1996-2004. ABSTRACT: The aim of this paper is to study the New Right in England during the last years of the XXth century within the framework of politics of education and educational policies. This work contains the analysis of the sources of the New Right in education —genesis, evolution, ideology, relationships— and shows the influence of the English educational policy on Spanish politics of education between 1996 and 2004.

  7. Liderazgo informal en las organizaciones: Análisis sobre su impacto e influencia en la productividad y competitividad

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    Javier de Jesús Viloria-Escobar

    2016-01-01

    Full Text Available La presente investigación tuvo como objetivo analizar, a partir de diversos aportes teóricos y dialógicos, las influencias e impactos del liderazgo informal en la productividad y competitividad de las organizaciones. Para lo cual, se utilizó un enfoque hermenéutico reflexivo de la investigación bibliográfica, que permitió la comprensión e interpretación de investigaciones consultadas en bibliotecas y bases de datos electrónicas de reconocimiento mundial. Además, se consultó la opinión de expertos académicos del campo administrativo  en Colombia para recopilar las voces y percepciones sobre el tema. Los principales resultados evidencian que el liderazgo informal, como una dinámica propia de los grupos informales, al vincularla al factor humano de la organización, puede influir de manera positiva o negativa en la productividad y competitividad. Se concluye que la gestión administrativa de este fenómeno organizacional se convierte en una herramienta para lograr ventajas competitivas en las organizaciones a través del mejoramiento de las variables funcionales de la empresa y el establecimiento de relaciones sociales más eficientes.

  8. Sobre a morte da cobaya consecutiva á dupla Vagotomia

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    Miguel Ozorio de Almeida

    1920-01-01

    vagos na cobaya produz congestões e edemas pulmonares que levam o animal á morte; 2 a secção sem irritação não dá logar a esses phenomenos. Dahi a conclusão principal destas pesquizas: se porventura existem excitações normalmente transmittidas pelos vagos aos centros nervosos respiratorios, não é a falta dessas excitações a causa primeira dos phenomenos produzidos pela vagotomia bilateral. Esses phenomenos são devidos a irritações do pneumogastrico. A dyspnéa encontrada nos animaes vagotomisados parece ser tambem um effeito directo ou indirecto dessas irritações. Conquanto pouco inclinados a admittir que seja essa dyspnéa a causa directa das lesões pulmonares, reconhecemos que essa questão não pode ser ainda inteiramente resolvida. As irritações dos vagos podem ter influencia sobre muitas e variadas funcções, cujas perturbações assim produzidas, têm um papel preponderante no mechanismo da morte consecutiva á dupla vagotomia. Temos o prazer de agradecer ao Snr. Dr. Paulo de Proença o seu valioso auxilio prestado em todo o curso das pesquizas que foram expostas neste trabalho.

  9. Hepatotoxicidade da cianotoxina microcistina

    Directory of Open Access Journals (Sweden)

    Andréa de Castro Leal

    2004-01-01

    Full Text Available Constitui interesse emergente em saúde pública avaliar a possibilidade de intoxicação humana por biotoxinas de algas cianofíceas, principalmente as hepatotoxinas do grupo das microcistinas. A microcistina, um heptapeptídeo monocíclico, é produzida principalmente pela cianobactéria Microcistis aeruginosa. São caracterizadas por alguns aminoácidos variáveis, dois deles com uma estrutura não usual que possuem importante papel na hepatotoxidade da microcistina. Apesar do acometimento humano atribuído as microcistinas incluírem gastroenterite, reações alérgicas ou irritativas, neurotoxicidade, o principal alvo da toxina é o fígado. Nos hepatócitos as microcistinas são carreadas pelo sistema transportador do ácido biliar, inibindo a atividade da proteína fosfatase no citoplasma. A inibição leva a mudanças morfológicas na membrana plasmática pela hiperfosforilação de citoqueratinas, e à atividade de promoção tumoral pelas proteínas hiperfosforiladas. Os métodos de detecção e quantificação de microcistinas no ambiente incluem a cromatografia líquida, o bioensaio em camundongos e os testes imunoenzimáticos. O último vem ganhando destaque pela praticidade e alta sensibilidade.

  10. 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)

  11. 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)

  12. Evaluation of occupational radiation dose in nuclear medicine: radiopharmaceutical administration to scintiscanning exams of myocardial perfusion; Avaliacao da dose de radiacao ocupacional em medicina nuclear: administracao de radiofarmacos em exames de cintilografria de perfusao miocardica

    Energy Technology Data Exchange (ETDEWEB)

    Komatsu, Cassio V., E-mail: cassiok@yahoo.com [Medicina Nuclear do Triangulo (MNT), Uberlandia, MG (Brazil); Michelin, Charlie A.; Jakubiak, Rosangela R., E-mail: charlie@utfpr.edu.br, E-mail: requi@utfpr.edu.br [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil); Lemes, Alyne O.; Silva, Juliana L.M., E-mail: alyne275@gmail.com, E-mail: jujumontesdocinho@gmail.com [Faculdade do Trabalho (FATRA), Uberlandia, MG (Brazil)

    2013-11-01

    In nuclear medicine, workers directly involved in exams are constantly exposed to ionizing radiation. The procedure for administration of the radiopharmaceutical to the patient is one of the most critical times of exposure. In tests of myocardial perfusion scintigraphy (MPS) administration of radiopharmaceutical repeats the steps of rest and cardiac stress. In this study, we used a Geiger -Mueller detector for measuring occupational radiation doses for during the administration of technetium- {sup 99m}- sestamibi in MPS tests. In the evaluation, discriminated the stages of examination and related professional experience time to doses measures at home. It were followed 110 procedures at home (55 conducted by professionals with over 5 years experience and 55 conducted by professionals with less than 1 year of experience) and 55 effort procedures. The results showed that the rest of the procedure time and dose are related to the experience of the worker. More experienced workers were faster (mean: 43 {+-} 16 vs 67 {+-} 25 seconds / procedure), and therefore received lower doses (mean 0.57 {+-} 0.16 versus 0.80 {+-} 0.24 {mu}Sv / procedure), both with statistical significance (p <0.001). In step effort, there were procedures lasting longer (mean: 19 {+-} 2 minutes / procedure), which resulted in higher doses (mean 3.0 {+-} 0.6 {mu}Sv / procedure)

  13. 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)

  14. Evaluation of the environmental equivalent dose rate using area monitors for neutrons in clinical linear accelerators; Avaliacao da taxa de equivalente de dose ambiente utilizando monitores de area para neutrons em aceleradores lineares clinicos

    Energy Technology Data Exchange (ETDEWEB)

    Salgado, Ana Paula; Pereira, Walsan Wagner; Patrao, Karla C. de Souza; Fonseca, Evaldo S. da, E-mail: asalgado@ird.gov.b [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Batista, Delano V.S. [Instituto Nacional do Cancer (INCa), Rio de Janeiro, RJ (Brazil)

    2009-07-01

    The Neutron Laboratory of the Radioprotection and Dosimetry Institute - IRD/CNEN, Rio de Janeiro, Brazil, initiated studies on the process of calibration of neutron area monitors and the results of the measurements performed at radiotherapy treatment rooms, containing clinical accelerators

  15. Evaluation of radiochemistry purity and p H of radiopharmaceuticals in nuclear medicine services at Pernambuco, Brazil; Avaliacao da pureza radioquimica e pH de radiofarmacos em servicos de medicina nuclear de Pernambuco, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Wellington; Lima, Fabiana Farias de, E-mail: falima@cnen.gov.b [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil); Santos, Poliane A.L.; Lima, Fernando Roberto de Andrade; Lima, Fabiana Farias de, E-mail: fflima@cnen.gov.b [Centro Regional de Ciencias Nucleares (CRCN-NE/CNEN-PE), Recife, PE (Brazil)

    2011-07-01

    Radiopharmaceuticals are cellular or molecular structures that have a radionuclide in its composition and they are used for diagnosing or treating diseases. The evaluation of the radiochemical purity of radiopharmaceuticals is essential to produce images with artifacts free, as well as avoid unnecessary absorbed dose to the patient. Since they are administered in humans is important and necessary that they undergo rigorous quality control. Due to this fact, the norm in ANVISA RDC 38/2008 declaring the mandatory completion of a minimum of tests in routine nuclear medicine services before human administration. (author)

  16. 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)

  17. Effects of the low-intensity red laser radiation on the fluoride uptake in enamel. A clinical trial; Avaliacao dos efeitos da radiacao laser de emissao vermelha em baixa intensidade na incorporacao de fluor no esmalte. Estudo clinico

    Energy Technology Data Exchange (ETDEWEB)

    Nakasone, Regina Keiko

    2004-07-01

    Fluoride has been the most important preventive method on development of the caries. This in vivo study evaluated the effects of low-intensity red laser radiation on the fluoride uptake in enamel. Ten healthy participants were recruited for this study. The two maxillary central incisors of each volunteer to be biopsied were used and divided into 4 groups: group G{sub C} (control, which was untreated; group G{sub F} (fluoride), which received topical acidulated phosphate fluoride (APF) 1,23% treatment for 4 minutes; group G{sub LF} (laser + fluoride), which was irradiated with a low-intensity diode laser ({lambda}= 660 nm and dose= 6 J/cm{sup 2}) with APF application after irradiation and group G{sub FL} (fluoride + laser), which received APF before irradiation using the same parameters as G{sub LF}. The determination of fluoride was performed using a fluoride ion electrode after an acid-etch enamel biopsy. The results show a significant increase of the fluoride uptake in enamel for groups G{sub F}, G{sub LF} and G{sub FL} when compared to control group. Although a percentage increase of 57% was observed for G{sub LF} with respect to G{sub F}, there were no statistical differences among treated groups. These findings suggest that low-intensity laser radiation used before APF could be employed in the clinical practice to prevent dental caries. (author)

  18. Parametric curve evaluation of a phototransistor used as detector in stereotactic radiosurgery X-ray beam; Avaliacao da curva parametrica de um fototransistor ao ser submetido a feixes de raios-X utilizados em radiocirurgia estereotaxica

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Daniela Pontes A.; Santos, Luiz Antonio P. [Centro Regional de Ciencias Nucleares (CRCN), Recife, PE (Brazil)]. E-mail: lasantos@cnen.gov.br; Santos, Walter M. [Hospital Governador Joao Alves Filho, Aracaju, SE (Brazil). Setor de Fisica Medica]. E-mail: walradio@mail.com; Silva Junior, Eronides F. da [Pernambuco Univ., Recife, PE (Brazil). Dept. de Fisica]. E-mail: eron@ufpe.br

    2005-07-01

    Phototransistors have been widely used as detectors for low energy X-rays. However, when they are used in high energy X-rays fields like those generated from linear accelerators (linac), there is a certain loss of sensibility to the ionizing radiation. This damage is cumulative and irreversible. Thus, a correction factor must be applied to its response, which is proportional to the integrated dose. However, it is possible to estimate the correction factor by using the V x I parametric curve of the device. The aim of this work was to develop studies to evaluate and correlate the parametric response curve of a phototransistor with its loss of sensibility after irradiation. An Agilent 4155C semiconductor parameter analyzer was used to trace the parametric curve. X-rays were generated by a 14 MV Primus-Siemens linear accelerator. The results demonstrated that there is a correlation between the integrated dose applied to the phototransistor and the parametric response of the device. Studies are under way to determine how such behavior can provide information for the dosimetric planning in stereotactic radiosurgery. (author)

  19. Assessment of the occupational exposure of the workers involved in the {sup 123}I production at the IEN/CNEN-RJ; Avaliacao da exposicao ocupacional dos trabalhadores envolvidos na producao de {sup 123}I no IEN

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Francisco de

    2005-07-01

    {sup 123}I is a gamma emitter used for diagnosis in Nuclear Medicine. Since 1998 it is produced in the Institute of Nuclear Energy (IEN) and supplied to the Clinics and Hospitals located in the city of Rio de Janeiro. The annual production is in the approximately of 0,74 TBq (20 Ci), which represents a risk of external and internal exposure to the workers involved in this activity. A survey of external doses in the period of 1994 to 2004 was carried out based on the individual registries available in the CONEXO Data Base operated by the Institute of Radiation Protection and Dosimetry (IRD). It was verified an increase of the external exposure associated to the production curve. However, the individual doses are all bellow the annual limits established by the regulatory board. On the other hand, the variation of doses among individuals involved in the same tasks suggests the possibility of optimization of procedures. Regarding internal exposure it was calculated a decision factor above 1mSv for the practice, which justifies the need for internal monitoring. An evaluation of the process based on the results of in vivo thyroid monitoring in the period of 2000 to 2004 was carried out to identify the steps which represent higher risk of internal exposure. The available data indicate that the laboratory of quality control is the critical step in terms of internal contamination. This conclusion can be justified by the high volatility of iodine which is manipulated in the form of a liquid open source during this step. With the aim of optimizing monitoring procedures for the control of occupationally exposed workers in the production of {sup 123}I, in vivo and in vitro bioassay methods were developed to identify and quantify internal contamination by such radionuclide, using the detection systems available at the Bioassay Laboratory and at the In Vivo Measurements Laboratory. The techniques developed present sensitivity compatible with the derived registry level associated to the committed effective dose equivalent of 1mSv. It was also established a methodology for the interpretation of bioassay data using the software AIDE. The methods developed in this work can be used to implement improvements in the radiation protection program of the IEN. It is suggested to increase the frequency of in vivo measurements and to include in vitro bioassay in the monitoring program, which will permit a better evaluation of the internal doses of the workers(author)

  20. Assessment of the bacteria reduction in the infected root canal irradiated with diode laser; Avaliacao da reducao bacteriana em conduto radicular infectado e irradiado com laser de diodo. Estudo in vitro

    Energy Technology Data Exchange (ETDEWEB)

    Radaelli, Claudia Amaral Rabello de Mello

    2002-07-01

    High success rates are achieved in conventional endodontic treatment of vital pulp teeth. However, in cases of non-vital pulp, a decrease in the rate of success occurs due to difficulties in achieving a complete disinfection of the root canals system. Some bacteria, such as Enterococcus faecalis, are frequently found in cases of endodontic treatment failure due to their high resistance to the conventional endodontic treatment. The aim of this study was to evaluate the efficiency of a high power diode laser irradiation in bacterial reduction of contaminated canals associated with dressing compose by calcium hydroxide paste propylene glycol and camphorated paramonochlorophenol. Eighty-two root canals were infected in vitro with Enterococcus faecalis in a concentration of 1x10{sup 8} CFU/ml. Specimens were high intensity irradiated with a diode laser model Opus 10, at a wavelength of 830 nm. Two different parameters were employed in continuous mode: 3 W and 2,5 W with a 360 {mu}m optical fiber at an angle of approximately 5 degrees respect to the dentine surface during 5 seconds, in 4 applications, with 20 seconds intervals among them. After these proceedings specimens were vortexed in peptone water and dilutions performed. Aliquots of the dilution were plated on m-Enterococcus agar, incubated, and the Colonies Forming Units (CFU) of ali groups was counted. The results showed a significant reduction of bacteria on ali groups after laser irradiation. A high reduction rate was achieved: 98.5% immediately after the laser irradiation; 48 hours after, the reduction was of 96,73% and, finally, a 100% reduction was achieved through the combination of laser irradiation and a long lasting dressing of calcium hydroxide paste, propylene glycol and camphorated paramonochlorophenol. High rates of bacteria reduction were achieved using the parameter of 3 W in continuous mode with the power of 2,9473 KW/cm{sup 2}. The temperature was monitored with a K-pipe thermocouple placed at the periapical point which width measured 1 mm, approximately. The maximum temperature variation was 7.45 deg C. Under electron microscope scanning, the control groups showed areas with smear layer covering the dentinal walls. The laser irradiated groups showed a smooth, uniform, clean appearance, with small areas of closed dentinal tubules without cracking alternately with areas of exposed open dentinal tubules. Some parts showed fusion of the dentinal mass (groups irradiated with 3 W). In groups where calcium hydroxide was associated with laser irradiation remains were found over the irradiated surface and, in many parts, the dentinal tubules could not be observed. The use of high intensity diode laser at 830 nm proved to be efficient and able to promote reduction in the Enterococcus faecalis population in the infected root canals. (author)

  1. Evaluation of toxicity to the biological treatment and removal of recalcitrant organic compounds from oil refineries wastewaters; Avaliacao da toxicidade ao tratamento biologico e remocao de compostos organicos recalcitrantes existentes em efluentes de refinarias de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Barros Junior, Laerte M.; Macedo, Gorete R.; Bezerra, Marcio S.; Pereira, Franklin M.S. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Engenharia Quimica; Schmidell, Willibaldo [Universidade Federal de Santa Catarina (UFSC), Florianopolis, SC (Brazil)

    2004-07-01

    Oil industry waste water usually contains recalcitrant chemical compounds, like phenol, benzene, toluene, xylene, naphthalene and acenaphthene. The respirometry, determination of respiration rate of an active biomass, is an adequate methodology for quantification of aerobic activity biological. This study aims evaluate the inhibition effect of phenol in the oxidation capacity of an industrial sludge. This work also intends to study the phenol removal through biological and photochemical-biological processes. The respirometry was carried out with synthetic solution, using sludge from an oil processing industry. The phenol degradation experiments were carried out in an activated sludge unit and in a photochemical reactor. This work suggests the potential of photochemical-biological treatment use, in relation to the biological process with a no-acclimated sludge, in the removal of refractory organic compounds from oil industry wastewaters. The characterization of biomass using the respirometry methodology showed which is a useful tool in evaluation of phenol toxicity to biological treatment. (author)

  2. 'High throughput': new technique to evaluation of biocides for biofouling control in oil fields; 'High throughput': nova tecnologia para avaliacao da eficacia de biocidas no controle de biofilme na industria do petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Yin, Bei [DOW, IL(United States); Yang, Jeff [DOW, Shangai (China); Bertheas, Ute [DOW, Horgen (Switzerland); Takahashi, Debora F. [DOW, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The wide metabolism diversifications and versatile surviving mechanisms lead to the broad existence of microorganisms in oil fields. Water flooding in secondary production can encourage microbial growth and biofilm build-up. Microbial contamination in oil field can cause many problems including microbiologically induced corrosion, oil and gas souring, deposition of iron sulfide, degradation of polymer additives, and plugging oil and gas pipelines and water purification systems. In general, biocides are needed both topside and down hole to control problematic microorganisms. In this study, a high throughput test method was developed that enables a more realistic determination of biocides efficacy against anaerobic microorganisms commonly found in oil field environments. Using this method, a thorough comparison of several commonly used biocides products in oil field for their efficacy against oil field anaerobic sulfate-reducing bacteria isolates was executed. This study showed that for each individual application, it is important to screen biocides and their combinations against microorganisms cultured from the field. Since biocides vary in their mode of action, this study also demonstrated the critical importance of utilizing the high throughput method for determining the best and most customized solution for each application. (author)

  3. Feasibility evaluation of using spent FCC catalyst for metals treatment from industrial waste; Avaliacao do potencial de recuperacao de niquel de catalisadores equilibrados (E-CAT) atraves da tecnica de remediacao eletrocinetica

    Energy Technology Data Exchange (ETDEWEB)

    Baptista, Adalberto; Ponte, Haroldo de Araujo [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil)

    2004-07-01

    The purpose of this work is to describe the feasibility evaluation using FCC catalyst for treatment from industrial wastes increasing the life time of the spent catalysts and reducing the environmental impact. Evaluated the reutilization of catalyst in process recovery of nickel adsorbed. The technique used was the Electrokinetic Remediation. This technique is based in application of a direct current of low intensity or low potential between the electrodes located in soil. The pollutants are mobilized how loaded species or particles. It used a electrokinetic reactor with approximated volume of 1200 cm{sup 3}, where the residue is placed. In your extremity are adapted two cameras of acrylic, being one anodic, with steel inox 304 electrode, and other cathodic, with lead electrode. In anodic camera, it was injected, with aid a bomb, a solution of sulfuric acid, which work as electrolyte, to a flow rate of 20 ml/h. Was evaluated the desorption of Nickel in the equilibrium catalyst submitting a variation of the conditions of the concentration and potential. (author)

  4. 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)

  5. Influence of cyclophosphamide on the radiopharmaceutical biodistribution: experimental evaluation in BALB/cJ mice; Efeito da ciclofosfamida na biodistribuicao de radiofarmacos: avaliacao experimental em camundongos BALB/cJ

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Ismar Pinto

    1996-11-01

    We study the influence of cyclophosphamide, a chemotherapeutic drug used in neoplastic treatments, on the biodistribution, in mouse, of some {sup 99m}Tc-labelled compounds used to get scintigraphic images. The cyclophosphamide was administered intravenously in female BALB/cJ mouse, in two distinct doses with an interval of 48 hours. Then, the radiopharmaceutical (150 k Hq) was administered by the same via one hour later. These animals were sacrificed, their organs were isolated and the activity was counted in a well counter. The percentage of activity in the organs was calculated by four methods: dividing the activity in each organ by the sum of activities in all organs, dividing the activity in each organ by the total activity injected in animal, dividing the result obtained in method by the mass of the specific organ. The results were compared with a set of animals not treated with the chemo therapeutical (control). (author). 87 refs., 5 figs., 39 tabs.

  6. Quantification of micronuclei in blood lymphocytes of patients exposed to gamma radiation for dose absorbed assessment; Quantificacao de micronucleos em linfocitos de pacientes expostas a radiacao gama para a avaliacao da dose absorvida

    Energy Technology Data Exchange (ETDEWEB)

    Barbosa, Isvania Maria Serafim da Silva

    2003-02-15

    Dose assessment in an important step to evaluate biological effects as a result of individual exposure to ionizing radiation. The use of cytogenetic dosimetry based on the quantification of micronuclei in lymphocytes is very important to complement physical dosimetry, since the measurement of absorbed dose cannot be always performed. In this research, the quantification of micronuclei was carried out in order to evaluate absorbed dose as a result of radiotherapy with {sup 60}Co, using peripheral blood samples from 5 patients with cervical uterine cancer. For this purpose, an aliquot of whole blood from the individual patients was added in culture medium RPMI 1640 supplemented with fetal calf serum and phytohaemagglutinin. The culture was incubated for 44 hours. Henceforth, cytochalasin B was added to block the dividing lymphocytes in cytokinesis. The culture was returned to the incubator for further of 28 hours. Thus, cells were harvested, processed and analyzed. Values obtained considering micronuclei frequency after pelvis irradiation with absorption of 0,08 Gy and 1,8 Gy were, respectively, 0,0021 and 0,052. These results are in agreement with some recent researches that provided some standard values related to micronuclei frequency induced by gamma radiation exposure in different exposed areas for the human body. The results presented in this report emphasizes biological dosimetry as an important tool for dose assessment of either total or partial-body exposure to ionizing radiation, mainly in retrospective dose investigation. (author)

  7. 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)

  8. Evaluation of the shield calculation adequacy of radiotherapy rooms through Monte Carlo Method and experimental measures; Avaliacao da adequacao do calculo de blindagens de salas de radioterapia atraves do metodo de Monte Carlos e medidas experimentais

    Energy Technology Data Exchange (ETDEWEB)

    Meireles, Ramiro Conceicao

    2016-07-01

    The shielding calculation methodology for radiotherapy services adopted in Brazil and in several countries is that described in publication 151 of the National Council on Radiation Protection and Measurements (NCRP 151). This methodology however, markedly employs several approaches that can impact both in the construction cost and in the radiological safety of the facility. Although this methodology is currently well established by the high level of use, some parameters employed in the calculation methodology did not undergo to a detailed assessment to evaluate the impact of the various approaches considered. In this work the MCNP5 Monte Carlo code was used with the purpose of evaluating the above mentioned approaches. TVLs values were obtained for photons in conventional concrete (2.35g / cm{sup 3}), considering the energies of 6, 10 and 25 MeV, respectively, first considering an isotropic radiation source impinging perpendicular to the barriers, and subsequently a lead head shielding emitting a shaped beam, in the format of a pyramid trunk. Primary barriers safety margins, taking in account the head shielding emitting photon beam pyramid-shaped in the energies of 6, 10, 15 and 18 MeV were assessed. A study was conducted considering the attenuation provided by the patient's body in the energies of 6,10, 15 and 18 MeV, leading to new attenuation factors. Experimental measurements were performed in a real radiotherapy room, in order to map the leakage radiation emitted by the accelerator head shielding and the results obtained were employed in the Monte Carlo simulation, as well as to validate the entire study. The study results indicate that the TVLs values provided by (NCRP, 2005) show discrepancies in comparison with the values obtained by simulation and that there may be some barriers that are calculated with insufficient thickness. Furthermore, the simulation results show that the additional safety margins considered when calculating the width of the primary barrier of radiotherapy rooms are conservative. They also show that the attenuation provided by the patient's body decreases with increased energy, with the highest attenuation being 0.54, for the energy of 6 MeV. (author)

  9. Methodology applied to evaluate the idea of selling electric energy from independent producers using wind power generation plants; Metodologia para avaliacao da ideia de venda de energia eletrica de origem eolica por produtores independentes

    Energy Technology Data Exchange (ETDEWEB)

    Tavares, G.M. [Universidade Federal Fluminense, Niteroi, RJ (Brazil); Fernandes, E. [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia

    1995-12-31

    Electricity production using wind energy as its source is a developing technology in more than 40 countries. There are about 27000 aerogenerators installed, in a total of circa 4.000 mw in nominal power. The objective of this paper is to demonstrate that De Bono`s methodology for ideas` evaluation can be applied to evaluate the idea of a Brazilian private independent energy producer selling to the Brazilian electric sector energy produced from the wind. (author). 37 refs

  10. Radiation effects evaluation for electrons sheaf in packages resistance in a Lasioderma serricorne, Plodia interpunctella and Sitophilus zeamais; Avaliacao dos efeitos da radiacao por feixe de eletrons na resistencia de embalagens a Lasioderma serricorne, Plodia interpunctella e Sitophilus zeamais

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Juliana Nazare

    2011-07-01

    The plagues of stored products consist of a man problem, depreciating products and causing economical damages. Among these curses we have Lasioderma serricorne (F. 1792), Sitophilus zeamais (M. 1855) and Plodia interpunctella (H. 1813) known by infesting stored products as: grains, brans, flours, coffee, tobacco, dried fruits and spices. These curses perforate and penetrate the packages, ovipositing over the substratum. In this context the package plays a fundamental part, preventing the contact and curses' proliferation in the packed product. So, to protect the packed product and to prolong its shelf life, the package should have good mechanical resistance to tension and perforation, good sealing, good barrier properties and should not transfer odors nor strange flavors to the packed product. The ionizing radiation can cause structural changes in polymer packages, these changes are caused by the scission processes and reticulation of the polymers chains. These are concurrent processes and the predominance of one over the other depends on the chemical structure of the polymer, the irradiation conditions and specific factors of the material that will absorb the energy. This work had the objective to evaluate the changes in mechanical properties of package structures used to store granola, cereal bar and pasta, as well as its resistance to perforation by L. serricorne, P. interpunctella and S. zeamais, when submitted to electrons sheaf radiation. In this methodology were used five structures of commercially utilized packages to store granola, cereal bar and pasta composed by (Polypropylene bi-oriented metallic/Polypropylene bi-oriented coextruded - BOPPmet/BOPP 50 {mu}m), (Polypropylene bi-oriented/Polypropylene - BOPP/PP 50 {mu}m), Poli (ethylene terephthalate) metallic/Polypropylene bi-oriented coextruded - PETmet/BOPP 32 {mu}m), Poli (ethylene terephthalate) /Polypropylene - PET/PP1 72 {mu}m), Poli (ethylene terephthalate)/Polypropylene - PET/PP2 32 {mu}m). The structures of packaging were submitted to radiation doses between 0, 10, 20 and 60 kGy, in one electron accelerator of 1,5 M and V, 25 mA and 37,5 kW, dose tax of 11,22 kGy / s, room temperature and air presence . Eight days, Two and Six months after irradiations, mechanical resistance experiment were accomplished to tension and elongating in rupture, sealing resistance and perforation resistance, all based in respective ASTM norms. The perforation experiment by insects were realized in an acclimatized room, where irradiated samples in doses of 0, 10, 20 and 60 kGy were sealed containing 40 g of granola, 40 g of pasta and cereal bar in number of nine by experiment, and equally divided in three plastic screened boxes by studied dose. In each box 20 adults of each insect were added in for 60 days, when the packages were evaluated to verify possible perforations. The differences between the sample results were statistically evaluated by ANOVA (p<0.05). The results showed that concerning the perforation resistance by L. serricorne, P. interpunctella and S. zeamais the polymeric structures evaluated showed low resistance by insects perforation before and after the treatment. BOPPmet/BOPP (50 {mu}m), PETmet/BOPP (32 {mu}m), PET/PP1 (72 {mu}m) and PET/PP2 (32 {mu}m) structures showed significant losses in mechanical properties studied. The BOPP/PP (50 {mu}m) showed the best set of answers in mechanical properties to the radiation treatment with electrons sheaf up to 10 kGy doses. Among the mechanical properties evaluated, sealing was the most affected by ionizing radiation, has shown, in general, increasing losses with radiation dose. (author)

  11. Assessment of occupational radiation protection conditions during power enhancement of the Angra-2 nuclear power plant; Avaliacao das condicoes de radioprotecao ocupacional durante a elevacao de potencia na Unidade 2 da Central Nuclear Almirante Alvaro Alberto - Angra-2

    Energy Technology Data Exchange (ETDEWEB)

    Azevedo, Eduardo M.; Rocha, Antonio Carlos S.; Ferreira, Paulo R.R.; Mouco, Charles Dickens C.L.; Godoy, Jose M.O.; Matta, Luiz E.S.C. [Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, RJ (Brazil)

    2001-07-01

    This paper intend to analyse the occupational radioprotection conditions of the Angra-2 nuclear power plant, from the startup up to reach 100% of the nominal power. To perform this work a group of dose rates measures was made including beta/gamma and neutron radiation, particulates and iodine monitoring, and surface contamination, during the whole process. These measures were made inside of the three main buildings: the reactor buildings (UJA - reactor core and UJB) and the Reactor Auxiliary Building (UKA). (author)

  12. HDPE/LLDPE blend-based nanocomposites - Part I: evaluation of thermo-mechanical properties and weathering resistance; Nanocompositos de blendas HDPE/LLDPE e OMMT - parte I: avaliacao das propriedades termo-mecanicas e da resistencia ao intemperismo

    Energy Technology Data Exchange (ETDEWEB)

    Passador, Fabio R.; Backes, Eduardo H.; Travain, Daniel R.; Ruvolo Filho, Adhemar; Pessan, Luiz A., E-mail: fabiopassador@gmail.com [Universidade Federal de Sao Carlos (UFSCar), SP (Brazil). Departamento de Engenharia de Materiais

    2013-07-01

    Nano composites from high density polyethylene/ linear low density polyethylene (HDPE/LLDPE) blends were prepared at the melt state in an extruder, using HDPE-g-MA as compatibilizer agent. The structural characterization was performed through wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM). The results showed that adding the compatibilizer induced formation of a predominant intercalated microstructure. Dynamic-mechanical studies showed that the addition of the compatibilizer increases the interactions between the nano clay surface and the polyolefin matrix. The weathering conditions affected the mechanical behavior of HDPE/LLDPE blend-based nano composites. Both treatments performed in hot water and in a forced convection air oven provided the relief of residual stresses in the polymer matrix, while the treatment in an accelerated aging chamber provided the formation of carbonyl groups that lead to a decreased degree of crystallinity and elastic modulus of the nanocomposites. (author)

  13. Evaluation of the ionizing radiation effects in microbiology, physical and chemical and sensory aspects of ice cream; Avaliacao dos efeitos da radiacao ionizante nos aspectos microbiologicos, fisico-quimicos e sensoriais de sorvetes

    Energy Technology Data Exchange (ETDEWEB)

    Rogovschi, Vladimir Dias

    2015-06-01

    The ice cream is defined as an emulsion of fats and proteins or a mixture of water and sugar, other ingredients may be added provided since they do not affect the product. It is considered a food of high nutritional value, providing lipids, carbohydrates, protein, calcium, phosphorus, and other minerals and vitamins (A, B1, B2, B6, C, D, E and K), and it is considered one of the most important products and higher interest to the dairy industry due to great demand by the consumers. The diseases related to food consumption are considered one of the most significant problems. Several outbreaks related to microbiological contamination of ice cream have been reported in recent decades in Asia, Europe and America. It is believed that the ice cream, as a frozen food, presents no risk to the population health. However, it is considered an excellent environment for the growth of microorganisms due to its composition, pH close to neutrality and long storage period. The aim of this study was to evaluate the microbiological, sensory and physicochemical aspects of ice cream. The ice cream samples were irradiated with gamma rays (60Co) with the doses of LOkGy, 2.0kGy, 3.0kGy and 4.0kGy. The samples intended for the inoculation of Staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 11229) and Salmonella abaetetuba (ATCC 35640) have been irradiated with doses of 1.0, 2.0 and 3.0kGy. It can be concluded that the dose of 3.0kGy was adequate to reduce most of the studied microorganisms to undetected levels. The use of gamma radiation affected the texture and the parameters of the colorimetric analyses of the ice cream. The results of the sensorial analyses showed that the better accepted dose was 3.0kGy. (author)

  14. Radiation exposure evaluation of the professional working interventionist procedures in a hemodynamics service; Avaliacao da exposicao a radiacao dos profissionais que executam procedimentos intervencionistas em um servico de hemodinamica

    Energy Technology Data Exchange (ETDEWEB)

    Da Silva, Leonardo Peres

    2004-07-01

    An evaluation of the dose distribution received by all the workers involved on coronary angioplasty, arteriography, coronary angiography and mitral valvuloplasty procedures has been made in this work. For the measurements, LiF:Mg, Ti TLD(TLD 100) was used, located in seven different points on the worker's body: hands, knees, neck, forehead and thorax, inside and outside lead apron.) The measurements have been done for each hemo dynamical procedure, and the TLD calibrated in personal dose equivalent (H{sub p}(d)) operational quantity for 0,07 mm, 3 mm and 10 mm depth. Nurses and auxiliary doctors did not receive expressive dose values, indicating that the adopted radioprotection procedures seem to be appropriate and sufficient for them. However, the same is not true for the doctors direct in charge of the procedure. The results show the importance of the use of thyroid protections in these cases. This work discusses the main factors that cause occupational dose increase. From all interventionist hemo dynamical procedures analyzed, the dose values received by the doctors on coronary angioplasty procedures and coronary angiography were higher than the ones found on arteriography and mitral valvuloplasty. The higher dose values has been found for coronary angiography procedures in X-ray tools, that work with fluoroscopy on continuous mode and have been executed with brachial way, even in the eyes, hands, knees and thyroid, with or without shield. Multiplying these high dose values, measured in one procedure by the mean number of annual procedures made at the studied hospital by each doctor, the individual dose annual limits can be surpassed. Based on these estimations, some optimizations suggestions have been made and one discussion about the need of additional monitoring points is presented. Different algorithms have been used in order to estimate the effective dose, including a new proposal. The obtained results using the actual Radiodiagnostic Brazilian regulation underestimate the dose, in the major part of the measured cases. The proposed algorithm seem sto offer a better estimation for the occupational effective dose for Interventional Radiology. (author)

  15. In vivo evaluation of Fe in the human skin and swins mice skin through the X-rays fluorescence technique; Avaliacao in vivo de Fe na pele humana e de camundongos swins atraves da tecnica de fluorescencia de raios X

    Energy Technology Data Exchange (ETDEWEB)

    Estevam, Marcelo

    2005-07-01

    Recent technological improvements allow the method of in vivo XRF to supply useful sensibility for diagnostics or monitoring in biomedical applications. In cases of hereditary sanguine disorders as the {beta}-Thalassaemia or a genetic disorder like Haemochromatosis, there is a high concentration of elements as Fe, Zn and Cu in the skin and internal organs, due to the treatment of those abnormalities or due to the own dysfunction caused by the disease. The levels of Fe related to the patient bearers of the {beta}-Thalassaemia are determined, at the moment, measuring a protein in the sanguine current, called ferritin. The monitoring of the protein is ineffective in several situations, such as when the patient suffers any disturbance of health. Nowadays, the main forms of measuring the levels of those metals through hepatic storage are the biopsy of the liver, that is invasive and potentially dangerous, presenting a rate of mortality of 0,1%, and through magnetic susceptibilities that employs a quantum superconductor, which is highly expensive and there are only three main world medical centers with this equipment. This work investigates the use of a Si PIN-diode detector and a 238Pu source (13 and 17 keV; 13%; 95.2 mCi; 86y) for the measurement of Fe skin levels compatible with those associated to the disease {beta}-Thalassaemia. XRF spectra were analyzed using a set of AXIL-WinQXAS programs elaborated and disseminated by the IAEA. The determination coefficient of the calibration model (sensitivity curve) was 0.97. Measurements on skin phantoms containing concentrations of Fe in the range from 15 to 150 parts per million (ppm), indicate that we are able to detect Fe at levels of the order of 13 ppm, using monitoring periods of 50 seconds and skin entrance dose less than 10 mSv. The literature reports skin Fe levels from 15.0 to 60.0 ppm in normal persons and from 70 to 150 ppm in thalassaemic patients. So, the employed methodology allows the in vivo measurement of the skin Fe concentration in wanted levels. (author)

  16. Synthesis and characterization of polyurethanes derived from cyclodextrins and poli (ethyleneglycol); Sintese, caracterizacao e avaliacao da capacidade de inclusao de poliuretanos derivados de cicodextrina e poli(etileno)glicol

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Marcia V.G. de; Vieira, Joao V.F.; Zawadzki, Sonia F., E-mail: zawadzki@ufpr.br [Universidade Federal do Parana - UFPR, Dept. de Quimica, Lab. de Polimeros Sinteticos (LABPOL), Curitiba, PR (Brazil)

    2011-07-01

    Cyclodextrins are natural cyclic oligosaccharides that have the ability to form inclusion complexes with various chemical species. In this work, the polymers with beta-cyclodextrin (BCD) or hydroxypropyl-beta-cyclodextrin (HPBCD) were synthesized from the reaction with poly (ethylene) glycol (PEG400, PEG1500, PEG4000) and diisocyanate, toluene 2,4 and 3,6 (TDI) in a solution of dimethylformamide (DMF). The polymers were characterized by infrared Fourier transform spectroscopy (FTIR), thermogravimetric analysis (TGA) and X-ray diffraction (XRD). The encapsulation capacity was evaluated by calorimetric method of discoloration of the alkaline solution of phenolphthalein. FTIR analysis revealed that assignments confirmed the formation of urethane linkages. TGA was evidenced by the mass loss in three stages and the evaluation results by XRD showed a crosslinking process. The evaluation of the encapsulation capacity of the units of the cyclodextrin crosslinked polymer showed that encapsulation increased proportionally to the mass of polymer used. (author)

  17. Synthesis and evaluation of the plant growth regulator property of indolic compounds derived from safrole; Sintese e avaliacao da propriedade reguladora de crescimento vegetal de compostos indolicos derivados do safrol

    Energy Technology Data Exchange (ETDEWEB)

    Marchi, Irineu [Escola Agrotecnica Federal de Rio do Sul, Rio do Sul, SC (Brazil)]. E-mail: marchi@softhouse.com.br; Rebelo, Ricardo Andrade; Rosa, Flavia A. Fernandes da; Maiochi, Riceli A. [Universidade Regional de Blumenau, SC (Brazil). Dept. de Quimica

    2007-07-15

    The present work describes the use of piperonal, a derivative of the secondary metabolite safrole, for the synthesis of new 5,6-methylenedioxy substituted indole carboxylic acids structurally related to the indol-3-yl-acetic acid (AIA, I). The route comprises six steps beginning with piperonal with an overall yield of 19%. Compound IX was tested towards its plant growth regulator properties in bioassays specific for auxine activity. The in vitro assays were performed in a germination chamber and were of two types: root growth in germinated seeds of Lactuca sativa, Cucumbis sativus and Raphanus sativus and peciole biotest using Phaseolus vulgaris. (author)

  18. Synthesis and characterization of ZSM-5 and calcined kaolin evaluation using the content of structure-directing; Sintese e caracterizacao da zeolita ZSM-5 utilizando caulim calcinado e avaliacao do teor de direcionador de estrutura

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, J.J.; Silva, V.J. da; Rodrigues, M.G.F., E-mail: jocielys@yahoo.com.br [Universidade Federal de Campina Grande (LABNOV/UAEQ/UFCG), PB (Brazil). Unidade Academica de Engenharia Quimica. Lab. de Desenvolvimento de Novos Materiais

    2012-07-01

    This study aims to evaluate the effect of the structure-directing content, tetrapropylammonium bromide, on the structural and morphological characteristics of ZSM-5 zeolite obtained using calcined kaolin as silicon and aluminum. The samples were characterized by XRD, EDX, SEM and Physics Adsorption N{sub 2}. Trough X ray diffraction patterns was possible to observed the formation of the structure of ZSM-5 with intense peaks and well-defined characteristic of crystalline. The micrographs showed that the samples consist of agglomerates and/or aggregates of particles characteristic of the MFI structure typical of ZSM-5 zeolite. And through the adsorption-desorption isotherms physical N2 was possible to observe that the samples show hysteresis type I typical of microporous materials with specific surface areas of 218 and 222 m{sup 2}/g. Therefore, the use of calcined kaolin to obtain ZSM-5 zeolite was effective. (author)

  19. Evaluation of the calibration uncertainty of gamma radiation monitors using a {sup 137}Cs source; Avaliacao da incerteza de calibracao de monitores de radiacao gama com uma fonte de {sup 137}Cs

    Energy Technology Data Exchange (ETDEWEB)

    Fernandes, Elisabeth; Leite, Sandro Passos; David, Mariano Gazineu; Estrada, Carlos Frederico Alves; Almeida, Carlos Eduardo de, E-mail: beth.fernandes56@gmail.com [Universidade do Estado do Rio de Janeiro (UERJ/LCR), Rio de Janeiro (Brazil). Lab. de Ciencias Radiologicas

    2014-07-01

    This study shows all the relevant components to the calculation of the calibration uncertainty of gamma radiation area monitors performed by the Lab. Ciencias Radiologicas of UERJ . The uncertainty components will be related with their respective estimated values, details about the uncertainty components calculations of positioning and field homogeneity will be shown. There were obtained the values of 3,8 % and 5,8 % to the expanded uncertainty (k=2) for the dosimetry and for the area monitors calibration, respectively. (author)

  20. Are the imaging findings used to assess the portal triad reliable to perform living-donor liver transplant?; Os achados de imagem para avaliacao da triade portal sao confiaveis para realizacao do transplante hepatico com doador vivo?

    Energy Technology Data Exchange (ETDEWEB)

    Dazzi, Francisco Leoncio; Ribeiro Junior, Marcelo Augusto Fontenelle; Mancero, Jorge Marcelo Padilla; Gonzalez, Adriano Miziara; D' Albuquerque, Luiz Augusto Carneiro, E-mail: franciscodazzi@hotmail.com [Hospital Beneficencia Portuguesa, Sao Paulo, SP (Brazil). Departamento de Cirurgia Geral e Transplante; Leao-Filho, Hilton Muniz [Hospital Beneficencia Portuguesa, Sao Paulo, SP (Brazil). Departamento de Radiologia e Diagnostico por Imagem; Silva, Adavio de Oliveira e [Hospital Beneficencia Portuguesa, Sao Paulo, SP (Brazil). Departamento de Gastroenterologia e Hepatologia

    2013-07-01

    Background: a crucial aspect of living-donor liver transplant is the risk imposed to the donor due to a procedure performed in a healthy individual that can lead to a high postoperative morbidity rate Aim: To correlate the pre- and intraoperative hepatic imaging findings of living adult donors. Methods: From 2003 to 2008 the medical charts of 66 donors were revised; in that, 42 were males (64%) and 24 females (36%), mean age of 30±8 years. The preoperative anatomy was analyzed by magnetic resonance cholangiography to study the bile ducts and by computed tomography angiography to evaluate the hepatic artery and portal vein. Normalcy criteria were established according to previously published studies. Results: Anatomic variations of the bile ducts were found in 59.1% of donors, of the artery hepatic in 31.8% and of the portal vein in 30.3% of the cases during the preoperative period. The magnetic resonance cholangiography findings were in agreement in 44 (66.6%) of donors and in disagreement in 22 (33.3%). With regards to hepatic artery, in all donors the findings of the imaging examination were in agreement with those of the intraoperative period. As to the portal vein, the computed tomography findings were in agreement in 59 (89.4%) donors and in disagreement in seven (10.6%). Conclusions: the bile duct anatomic variations are frequent, and the magnetic resonance cholangiography showed moderate accuracy (70%) in reproducing the surgical findings; the computed tomography reproduced the intraoperative findings of the hepatic artery in 100% of donors, and of the portal vein in 89.4% of the cases, thus demonstrating high accuracy (89%). (author)