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Sample records for sistematica para avaliacao

  1. Factores predisponentes para la inflamacion gingival asociada con coronas de acero en dientes temporales en la poblacion pediatrica. Revision sistematica de la literatura

    National Research Council Canada - National Science Library

    Madrigal Lopez, Daniela; Viteri Buendia, Esther Maria; Romero Sanchez, Mario Rafael; Colmenares Millan, Maria Marcela; Suarez, Angela

    2014-01-01

    Introduccion: el objetivo de esta revision sistematica fue determinar los factores predisponentes para la inflamacion gingival producidos por las coronas de acero, en comparacion con dientes temporales...

  2. Sindrome da fragilidade biologica em idosos: revisao sistematica

    National Research Council Canada - National Science Library

    Tribess, Sheilla; Jaco de Oliveira, Ricardo

    2011-01-01

    Conclusao As disparidades na prevalencia de indices de fragilidade e pre-fragilidade devem ser minimizadas, com estimulo a padronizacao metodologica para a avaliacao da fragilidade humana. Palabras Clave...

  3. Conceptualizacion y evaluacion de la impulsividad en adolescentes: una revision sistematica

    National Research Council Canada - National Science Library

    Riano-Hernandez, Diana; Guillen Riquelme, Alejandro; Buela-Casal, Gualberto

    2015-01-01

    .... Se realizo la revision sistematica sobre impulsividad en adolescentes, con el objetivo de identificar las diferentes definiciones, analizar las medidas que son usadas para evaluarla y puntualizar...

  4. Hiperinsuflacao manual para desobstrucao das vias aereas em pediatria: revisao sistematica

    Directory of Open Access Journals (Sweden)

    Vanessa Cristina Waetge Pires de Godoy

    2013-09-01

    Full Text Available OBJETIVO: Avaliar, na literatura, a aplicação da hiperinsuflação manual como técnica de fisioterapia respiratória em pediatria, considerando a desobstrução das vias aéreas como desfecho principal. MÉTODOS: Revisão realizada nas bases eletrônicas Lilacs, Biblioteca Cochrane, Medline (via Biblioteca Virtual em Saúde e Pubmed, SciELO e PEDro (período de 2002 a 2013, utilizando os descritores: "physiotherapy (techniques" "respiratory therapy" "intensive care" e "airway clearance". Os estudos foram selecionados e classificados por nível de evidência e recomendação (método Oxford Centre for Evidence-Based Medicine por dois avaliadores, e um terceiro avaliador refez a pesquisa e conferiu a classificação dos artigos. RESULTADOS: Foram inclusos 3 estudos, que somaram 250 crianças (de zero a 16 anos. Os principais diagnósticos encontrados foram: insuficiência respiratória aguda, pós-operatório de cardiopatias congênitas e abdominais alta, transplante de medula óssea, asma, reconstrução traqueal, lesão cerebral, lesão de vias aéreas e doenças pulmonares heterogêneas. Os estudos foram classificados em nível de evidência 2C e grau de recomendação C. CONCLUSÕES: A hiperinsuflação manual parece ser útil para a desobstrução das vias aéreas nessa população, embora as evidências da literatura sejam ainda insuficientes. Assim, são necessários estudos controlados e randomizados para determinar a segurança e a eficácia da hiperinsuflação manual em pediatria. A mesma deve ser realizada somente por fisioterapeutas treinados.

  5. Marxismo como referencial teorico-metodologico em saude coletiva: implicacoes para a revisao sistematica e sintese de evidencias

    Directory of Open Access Journals (Sweden)

    Cassia Baldini Soares

    2013-12-01

    Full Text Available O objeto deste estudo é a incorporação em revisões sistemáticas de resultados de pesquisas desenvolvidas na vertente marxista de produção do conhecimento, como evidências em saúde. Os objetivos são: rever os pressupostos do materialismo histórico e dialético (MHD e discutir as implicações da dialética para a revisão da literatura e síntese de evidências. O MHD constitui um referencial potente para geração de conhecimento e transformação das políticas e práticas em saúde, a partir da explicação de que as contradições sociais estão na base do processo saúde-doença, construção teórica fundamental no campo da saúde coletiva. Atualmente observa-se considerável influência do paradigma crítico, de origem marxista, na construção do conhecimento em saúde. Pesquisas no paradigma crítico apresentam métodos complexos de apreensão do objeto, inerentes às diretrizes da dialética, oferecendo resultados que constituem evidências em saúde. Revisões sistemáticas devem enfrentar a dificuldade metodológica de integrar esses resultados plenamente ao cuidado em saúde.

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

    Energy Technology Data Exchange (ETDEWEB)

    Senne Junior, Murillo

    2003-07-15

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

  7. Avaliacao das condicoes fisico-funcionais de restaurantes comerciais para implementacao das boas praticas

    National Research Council Canada - National Science Library

    Pereira da Fonseca, Michelle; de Andrade Manfridini, Livia; de Sao Jose, Jackline Freitas Brilhante; Batista Tomazini, Ana Paula; Duarte Martini, Hercia Stampini; de Cassia Lanes Ribeiro, Rita; Pinheiro Sant'Ana, Helena Maria

    2010-01-01

    ... e utensilios de restaurantes comerciais de um municipio da Zona da Mata Mineira e verificar se estes estabelecimentos oferecem condicoes adequadas para implementacao das boas praticas. Foram avaliados 30% (13...

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

    Directory of Open Access Journals (Sweden)

    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.

  9. La salud bucal y la atencion odontologica de las mujeres embarazadas: estudio bibliometrico, revision sistematica y analisis de contenido

    National Research Council Canada - National Science Library

    Concha Sanchez, Sonia Constanza; Villarreal Neira, Camila; Morales Borrero, Carolina; Acevedo Arguello, Cesar; Almario Barrera, Andrea Johanna

    2017-01-01

    .... Los objetivos de este trabajo fueron: realizar un analisis bibliometrico, una revision sistematica y analisis de contenido de los articulos encontrados asociados a estas tematicas. Metodologia...

  10. APORTES FITOQUIMICOS A LA SISTEMATICA DE LA FAMILIA DIPSACACEAE

    Directory of Open Access Journals (Sweden)

    Diego Rodríguez-Hernández

    2014-01-01

    Full Text Available Este trabajo enmarca una revisión fitoquímica de la familia Dipsacaceae y los aportes a su sistemática. La química es diversificada para las 89 especies consideradas, triterpenos glicosidados, flavonoides, iridoides y fenil propanoides fueron seleccionados como indicadores taxonómicos, debidos no solo al número de ocurrencia, sino también a la diversidad estructural. El análisis de las correlaciones entr e los parámetros químicos sobre la base de los metabolitos secundarios seleccionados, consigo mismo y con los parámetros morfológicos, permiten en parte la reorganización de la sistemática planteada hasta hoy. Conjuntamente los derivados del fenil propano l sirvieron como marcadores para el reconocimiento de Morinaceae, así como la ausencia de flavonoides permitió el reconocimiento de Triplostegiacea. Quimiotaxonomicante, las familias Dipsacaceae, Morinaceae y Triplostegiaceae, presentan diferencias marcada s en la producción de sus respectivos metabolitos secundarios, confirmado el reconocimiento de ambas familias segregadas de las Dipsacaceae y en parte su sistemática desde un punto de vista fitoquímico .

  11. Politica de humanizacao na atencao basica: revisao sistematica

    Directory of Open Access Journals (Sweden)

    Carlise Rigon Dalla Nora

    2013-12-01

    Full Text Available OBJETIVO : Analisar as práticas de humanização na atenção básica na rede pública do sistema de saúde brasileiro com base nos princípios da política nacional de humanização do Brasil. MÉTODOS : Procedeu-se à revisão sistemática da literatura seguida de metassíntese, usando as bases de dados: BDENF (Base de dados da enfermagem, BDTD (Biblioteca digital brasileira de teses e dissertações, CINAHL ( Cumulative Index to nursing and allied health literature , LILACS (Literatura Latino-americana e do Caribe em ciências da saúde, MedLine (Literatura Internacional em ciência da Saúde, PAHO (Biblioteca da Organização Pan-Americana da Saúde e SciELO ( Scientific Electronic Library Online . Foram selecionados os seguintes descritores de assunto: Humanização; Humanização da Assistência; Acolhimento; Cuidado humanizado; Humanização em saúde; Vínculo; Programa de Saúde da Família; Atenção Básica; Saúde Coletiva e Sistema Único de Saúde. Para análise, foram incluídos artigos de pesquisa, estudos de caso, relatos de experiências, dissertações, teses e capítulos de livros, escritos em língua portuguesa, inglesa ou espanhola, publicados de 2003 a 2011. RESULTADOS : Das 4.127 publicações recuperadas sobre o tema, foram avaliadas e incluídas 40, chegando a três categorias centrais. A primeira, infraestrutura e organização dos serviços básicos de saúde, evidenciou insatisfação com a estrutura física e material e com os fluxos de atendimento que podem facilitar ou dificultar o acesso. A segunda refere-se ao processo de trabalho, que apresentou questões relacionadas ao número insuficiente de profissionais, fragmentação dos processos de trabalho, perfil e responsabilização profissional. A terceira consistiu das tecnologias das relações e apontou o acolhimento, vínculo, escuta, respeito e diálogo com os usuários. CONCLUSÕES : Embora muitas práticas sejam citadas como humanizadoras, não conseguem

  12. Evaluation of a wood chipping system for eucalyptus tops for energy; Avaliacao de um sistema de cavaqueamento de ponteiras de eucalipto para aproveitamento energetico

    Energy Technology Data Exchange (ETDEWEB)

    Canto, Juliana Lorensi do [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil); Machado, Carlos Cardoso; Souza, Amaury Paulo de; Sant' Anna, Cleverson de Mello [Departamento de Engenharia Florestal da Universidade Federal de Vicosa, UFV, MG (Brazil)], E-mails: machado@ufv.br, amaury@ufv.br, cleverson@ufv.br; Seixas, Fernando [Universidade de Sao Paulo (USP), Sao Paulo, SP (Brazil). Escola Superior de Agricultura Luiz de Queiroz, ESALQ], E-mail: fseixas@esalq.usp.br

    2011-11-15

    The objective of this study was to evaluate the performance and to estimate costs of a wood chipping system for tree tops, which are considered residuals from wood harvesting, to be used for energy. The study was developed in a forest industry in the Para State, located in the north region of Brazil. The system was comprised by one wood chipper, two forwarders and one front loader. Data collection was based on time study, fuel consumption and chips load weighting. System average productivity was 17.51 tonnes per effective hour. Machine utilization rate was 51.9% due to many delays, mainly for repair and maintenance of the chipper. Chips transportation was considered to be the critical point of the system, due to some lack of trucks available for blowing chips. The system can produce between 94 and 162 times more energy than the energy consumed. System cost per effective hour was R$ 376.56, which means R$ 21.51/tonne of chips or R$ 2.70/G J. (author)

  13. Hiperinsuflacao manual para desobstrucao das vias aereas em pediatria: revisao sistematica

    OpenAIRE

    Vanessa Cristina Waetge Pires de Godoy; Nathalia Mendonca Zanetti; Cintia Johnston

    2013-01-01

    OBJECTIVE:To perform an assessment of the available literature on manual hyperinflation as a respiratory physical therapy technique used in pediatric patients, with the main outcome of achieving airway clearance.METHODS:We reviewed articles included in the Lilacs (Latin American and Caribbean Literature on Health Sciences/Literatura Latino Americana e do Caribe em Ciências da Saúde), Cochrane Library, Medline (via Virtual Health Library and PubMed), SciELO (Scientific Electronic Library), and...

  14. Efecto del consumo de linaza en el perfil lipidico, el control del cancer y como terapia de reemplazo hormonal en la menopausia: una revision sistematica de ensayos clinicos aleatorizados

    National Research Council Canada - National Science Library

    Molina Castano, Carlos Federico; Ruiz Pineda, Adriana Marcela; Lopez Marin, Beatriz Estella; Arango Alzate, Catalina Maria; Gaviria Gomez, Berta Lucia

    2011-01-01

    ... andropausia. Materiales y metodos: se realizo una revision sistematica de ensayos clinicos aleatorizados que examinaron los efectos del consumo de linaza sobre el peso corporal, la concentracion de lipidos sanguineos, el control...

  15. Note sulla sistematica del genere Asparagus L. (Asparagaceae): l'anatomia dei cladodi come carattere diagnostico

    OpenAIRE

    Urbani, Malvina; Ledda, Marco G.; Becca, Giovanna

    2005-01-01

    Nell' ambito di una serie di ricerche su sistematica e corologia del genere Asparagus L. in Sardegna (URBANI et al., in stampa), sono state compiute delle osservazioni sull' anatomia dei cladodi che si sono rivelate utili nella circoscrizione dei tre taxa presenti sull'isola: Asparagus acutifolius L., A. albus L. e A. horridus L. La necessità di effettuare delle osservazioni sull'anatomia dei cladodi, è sorta, tra l'altro, per risolvere alcuni problemi di carattere sis...

  16. The program {sup L}ight for everyone{sup :} assessment in a rural community; O programa {sup L}uz para todos{sup :} avaliacao em um assentamento rural

    Energy Technology Data Exchange (ETDEWEB)

    Borges Neto, Manuel Rangel [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil). Programa de Pos Graduacao em Engenharia Eletrica]. E-mail: UFC.rangelb@ig.com.br; Carvalho, Paulo Cesar Marques de; Lopes, Luiz Carlos Nascimento; Lima, Aureo Cezar de; Ribeiro, Joao Tercio Fontele [Centro Federal de Educacao Tecnologica (CEFET), Petrolina, CE (Brazil)

    2006-07-01

    This paper brings an evaluation of the results obtained by the program 'Luz Para Todos' in a rural community at Petrolina-PE County. At first an energetic consumption profile were done when they were not grid connected and after the grid connection a new profile were done. Besides satisfactory results, were detected some actions that should be improved. (author)

  17. Eficacia da limpeza ou desinfecao do meato urinario antes da cateterizacao urinaria: revisao sistematica

    Directory of Open Access Journals (Sweden)

    Madalena Cunha

    2013-12-01

    Full Text Available As infeções do trato urinário associadas à cateterização são muito frequentes no contexto comunitário e hospitalar. Existem atualmente várias recomendações para sua prevenção, contudo, quando abordado o soluto a utilizar no meato urinário previamente à algaliação continuam a persistir dúvidas. Assim, este estudo procurou determinar a eficácia da limpeza do meato urinário com água ou soro fisiológico comparativamente à sua assepsia por meio de uma revisão sistemática com metanálise. Para isso foram seguidos os princípios propostos pelo Cochrane Handbook , a análise crítica realizada por dois investigadores e a análise estatística com recurso ao programa STATA 11.1. Podemos concluir que a limpeza ou desinfeção do meato urinário previamente à cateterização vesical não é estatisticamente significativa (OR=1,07, IC 95%=0,68-1,68, p=0,779, existindo alguma evidência de que a utilização de água/soro fisiológico reduz as taxas de ITU.

  18. Consumo alimentar e fatores dieteticos envolvidos no processo saude e doenca de Nikkeis: revisao sistematica

    Directory of Open Access Journals (Sweden)

    Fabiana Hitomi Tanabe

    2013-06-01

    Full Text Available OBJETIVO: Analisar consumo alimentar e fatores dietéticos envolvidos no processo saúde e doença da população de nikkeis. MÉTODOS: Foi realizada revisão sistemática da literatura, com buscas nas bases de dados do Lilacs, SciELO e PubMed/Medline, referente ao período de 1997 a 2012, de estudos observacionais sobre o consumo alimentar de nikkeis. Inicialmente, foram analisados 137 títulos e resumos, sendo excluídos estudos de intervenção, aqueles que apresentavam somente níveis séricos de vitaminas e metabólitos e estudos que não contemplassem o objetivo da revisão. Desses, foram selecionados 38 estudos avaliados com base no método de Downs & Black (1998, adaptado para estudos observacionais, permanecendo 33 para análise. RESULTADOS: Foram encontrados poucos estudos sobre consumo alimentar de nikkeis fora do Havaí, dos Estados Unidos e do estado de São Paulo (principalmente em Bauru, no Brasil. Houve elevada contribuição dos lipídios no valor calórico total dos nipo-brasileiros, em detrimento dos carboidratos e das proteínas. Nos Estados Unidos, a prevalência de consumo de alimentos de alta densidade energética foi elevada em nipo-americanos. Os nisseis (filhos de imigrantes apresentaram, em média, maior consumo de produtos da dieta japonesa, enquanto os sanseis (netos de imigrantes apresentaram um perfil alimentar mais ocidentalizado. CONCLUSÕES: O consumo alimentar de nikkeis, embora ainda conservando alguns hábitos alimentares de japoneses nativos, revela alta prevalência de consumo de alimentos típicos do padrão ocidental (alimentos processados, ricos em gorduras e sódio e pobres em fibras, que pode estar contribuindo para o aumento de doenças crônicas nessa população.

  19. Evaluation of {sup 222}Rn concentration of the internal and external environments of residences at Monte Alegre municipality, Para, Brazil; Avaliacao da concentracao do {sup 222}Rn nos ambientes internos e externos de residencias do municipio de Monte Alegre, PA

    Energy Technology Data Exchange (ETDEWEB)

    Melo, Vicente de Paula

    1999-07-01

    The human being is constantly exposed to the natural radioactivity in the environment where he lives. This radioactivity comes mainly from materials present in the terrestrial crust that possess in their constitution chemical elements belonging to the radioactive families of uranium and thorium. The use of such materials for the construction of houses constitutes an important exposure form to the natural radiation, above all to the radioactive gas {sup 222}Rn, that it is exhaled from them. The Brazilian soil is composed, among other, of minerals that contain appreciable concentrations of these elements. The inhabitants of Monte Alegre town in Para, located at 2 deg 00' 24,9 'S ; 54 deg 04 ' 13,5 {sup W}, used in the construction of their houses stones obtained from an area 20 km distant of Monte Alegre, denominated Ingles de Souza, located at 01 deg 56' 4 0,1 S; 54 deg 12 149,7 W, where a small residential village, denominated National Agricultural Colony of Para (CANP), is located. The objective of this work was to evaluate the indoor concentration of {sup 222}Rn in the residences of Monte Alegre and CANP. Determinations of the {sup 238}U and {sup 226}Ra concentrations, measurements of the radon flux in samples of stones and soils of the two regions, as well as measurements to the gamma dose close of the soil and inside the residences, were also carried out. The average results of the radon concentration in the air of the investigated residences did not exceed the limits of 200 Bq. m{sup 3} (action level) and 600 Bq. m{sup 3} (intervention level) recommended by the International Commission on Radiological Protection (ICRP). The concentrations of natural radionuclides and the radon flux determined at the village showed values 17 times higher than those found at the urban area of Monte Alegre, while the average indoor gamma dose rate in the village residences was 0.86 mSv/a. (author)

  20. Heuristicas para avaliacao de interfaces de portais universitarios

    NARCIS (Netherlands)

    Pelogi, A.P.S.; van Amstel, Frederick; Barsottini, C.G.N.

    2012-01-01

    The Heuristic Evaluation method seems to be efficient to diagnose interface usability problems. The propose at this study is to determine whether specific heuristics for university portals are appropriate and contribute to a more specific evaluation of interface usability of the portal of the

  1. Avaliacao de projeto de promocao da saude para adolescentes

    Directory of Open Access Journals (Sweden)

    Jovino Oliveira Ferreira

    2013-06-01

    Full Text Available OBJETIVO: Avaliar programa de promoção de atividade física e de escolhas alimentares entre adolescentes. MÉTODOS: Estudo transversal realizado com 911 adolescentes de 13 a 18 anos de idade, de escolas públicas de Goiânia, GO, em 2010. Os participantes foram divididos em dois grupos: intervenção (escolas participantes do Projeto Viver Saudável e controle. Foram considerados como atividade física: deslocamento, aulas de educação física na escola, atividade física fora da escola e no lazer. Foram definidos como ativos aqueles que acumularam 300 ou mais minutos por semana. Quanto às escolhas alimentares, foi classificado como adequado o consumo de alimentos protetores em cinco ou mais dias da semana. Foram realizadas análises estatísticas com teste de Qui-quadrado de Pearson. RESULTADOS: A maioria dos adolescentes foi identificada como inativos ou insuficientemente ativos, com 65,7% no grupo intervenção e 65,2% no grupo controle, sem diferenças significativas entre os grupos e com prevalência maior entre o sexo feminino. Pouco mais da metade dos adolescentes consumiam alimentos protetores da saúde em cinco ou mais dias da semana, sendo 56,6% e 50,4%, respectivamente, nos grupos intervenção e controle (p = 0,373. CONCLUSÕES: A ausência de diferenças quanto a escolhas alimentares e prática de atividade física entre os grupos intervenção e controle indica que o projeto Viver Saudável precisa ser reavaliado visando melhorar a efetividade no cumprimento dos seus objetivos.

  2. Avaliacao de risco dos organismos geneticamente modificados

    National Research Council Canada - National Science Library

    Maramaldo Costa, Thadeu Estevam Moreira; Muzy Dias, Aline Pecanha; Damasio Scheidegger, Erica Miranda; Marin, Victor Augustus

    2011-01-01

    .... Nas duas ultimas decadas, organizacoes governamentais e intergovernamentais tem planejado estrategias e protocolos para o estudo da seguranca de alimentos derivados de cultivos geneticamente modificados...

  3. Nutritional management of eating disorders in obesity/Manejo nutricional dos transtornos alimentares na obesidade: uma revisao sistematica

    National Research Council Canada - National Science Library

    Miranda, Renata Peter

    2013-01-01

    ..., humilhacao que podem desencadear um transtorno alimentar (Stunkard e Wadden, 1992). A obesidade e os transtornos alimentares sao considerados problemas com causas diferentes. Entretanto, varios estudos identificam comportamentos nao saudaveis para controle do peso induzidos por uma experiencia corporal negativa como antecedente comum tanto da obesidade c...

  4. Avaliacao neuropsicologica de idosos praticantes de capoeira

    Directory of Open Access Journals (Sweden)

    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

  5. Systematic for assessment of occupational exposure to ultraviolet radiation; Sistematica para la valoracion de la exposicion laboral frente a radiaciones ultravioletas

    Energy Technology Data Exchange (ETDEWEB)

    Anies Escartin, J.; Perramon Llado, A.

    2011-07-01

    The approval of Royal Decree 486/2010 of 23 April on the protection of health and safety of workers from risks related to exposure to artificial optical radiation, moves to state law a framework of protection against the radiation. This should involve a significant intensification of control at work is conducted in this radiation. Despite the complexity of the issue and limit values ??difficult to apply (for incoherent ultraviolet radiation enters the bounding box up to 5 different values ??may apply), requires a systematic analysis of the problem well done. In this paper we consider the ultraviolet radiation generated by artificial sources.

  6. Contribution evaluation of the universalization program of access to electric power 'Light for All': energy and life quality; Avaliacao da contribuicao do programa de universalizacao do acesso a energia eletrica'Luz para Todos': energia e qualidade de vida

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Marcio Giannini; Freitas, Marcos Aurelio Vasconcelos [Universidade Federal do Rio de Janeiro (PPE/COPPE/UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-Graduacao de Engenharia. Programa de Planejamento Energetico], Emails: giannini@cepel.com.br, mfreitas@ppe.ufrj.br; Silva, Neilton Fidelis [Instituto Federal de Educacao, Ciencia e Tecnologia do Rio Grande do Norte (CEFET-RN), Natal, RN (Brazil)], E-mail: neilton@ivig.coppe.ufrj.br

    2010-07-01

    The evaluation of effectively of public politics in the frame of the program 'Light for all (Luz para Todos)', allows that those actions be measured and rethink in a way to reinforced the sustainable character of the planning, and in the own inclusive characteristics which the energy can assume front of other aspects involved in the improvement of life quality.

  7. Avaliacao do Programa 5 "s" em uma instituicao de ensino

    National Research Council Canada - National Science Library

    Torquato, Sebastiao, Jr; Duarte de Araujo, Maria Arlete

    2008-01-01

    O artigo objetiva avaliar as contribuicoes do Programa 5 "s" (cinco sensos) para o desenvolvimento de habitos e atitudes adequados pelos alunos do ensino medio do Centro Federal de Educacao Tecnologica do Rio Grande do Norte (CEFET-RN...

  8. Evaluation of protection measurements for urban environments; Avaliacao de medidas de protecao para ambientes urbanos

    Energy Technology Data Exchange (ETDEWEB)

    Rochedo, Elaine R.R., E-mail: erochedo@cnen.gov.b [Comissao Nacional de Energia Nuclear (CODIN/CNEN), Rio de Janeiro, RJ (Brazil). Coord. de Instalacoes Nucleares; Silva, Diogo N.G.; Nascimento, Udilma; Conti, Luiz F., E-mail: dneves@ird.gov.b, E-mail: lfcconti@ird.gov.b, E-mail: udilma@ird.gov.b [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Wasserman, Maria Angelica V., E-mail: maria.wasserman@pq.cnpq.b [Instituto de Engenharia Nuclear (IEN/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2011-10-26

    Radioactive accidents has shown the necessity of a previous evaluation planning of exposure and directives for implementation of protection measurements. The description or measurements in the literature usually is associated to reduction of concentrations in the medium where they are applied. For verification the efficiency in dose reduction, it is necessary to proceed simulations. Through the development of data base on protection measurements, it was established basic sceneries, typically tropical as far the building type is concerned and the construction material. The program SIEM was used for simulation of contamination with {sup 137}Cs. The results indicates that generic solutions persuade not to and the decision make processes should be effectuated according to the real conditions of contamination and the use of affected area. For affected areas, two classification criteria were defined: (1) efficiency in reducing the dose in the first year; and (2) efficiency in dose reducing at long term

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

    Energy Technology Data Exchange (ETDEWEB)

    Piovesan, Luis Sergio

    1997-07-01

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

  10. Evaluation of protection measurements for rural environments; Avaliacao de medidas de protecao para ambientes rurais

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Diogo N.G.; Silva, Fernanda L.; Conti, Luiz F., E-mail: dneves@ird.gov.b, E-mail: lfcconti@ird.gov.b, E-mail: fleite@ird.gov.b [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Wasserman, Maria Angelica V., E-mail: maria.wasserman@pq.cnpq.b [Instituto de Engenharia Nuclear (IEN/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Rochedo, Elaine R.R., E-mail: erochedo@cnen.gov.b [Comissao Nacional de Energia Nuclear (CODIN/CNEN), Rio de Janeiro, RJ (Brazil). Coord. de Instalacoes Nucleares

    2011-10-26

    Among the planning activities of actuation in nuclear/radiological emergences, it is included the efficiency evaluation of protection and remediation measurements. From the development of a data base on such measurements for the agricultural areas, the program SIEM was used for effectuation the simulations involving the {sup 137}Cs, {sup 131}I and {sup 90}Sr radionuclides, in scenery previously established for simulation those areas of a 50 km surrounding the Admiral Alvaro Alberto nuclear power plant. The obtained results indicate that the scenery is determinant of efficiency measurements involving various specific factors of each place, such as: agricultural and cattle breeding products, consumption habits of population and the grade of subsistence by the diet items, making not practical the elaboration of predefined generic sceneries. The great dependence on seasoning related to the moment of accident makes inadequate any previous evaluation what soever for evaluation of efficiency of protection and remediation measurements. Therefore, previous decisions are not recommended about the relevance of protection measurements for rural areas. Two classification criteria were defined: (i) the efficiency in reduction the doses in the firs year; and, (i i) efficiency in reduction the dose at long term

  11. Evaluation for turbine implementation for a micro hydroelectric power plant; Avaliacao para implantacao de uma turbina para uma microcentral hidreletrica

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Gilberto Manoel; Halmeman, Maria Cristina Rodrigues; Oliveira, Franciene Gois [Universidade Estadual Paulista (UNESP), Botucatu, SP (Brazil). Programa de Pos-graduacao em Energia na Agricultura; Seraphim, Odivaldo Jose [Universidade Estadual Paulista (UNESP), Botucatu, SP (Brazil). Dep. de Engenharia Rural

    2008-07-01

    In this work it was analyzed the viability technical and economical of turbines to micro hydroelectric headquarters as an alternative to consumers not served by electric energy in isolated areas. It was used a experimental methods to create an estimative and a evaluation of the hydroelectric potential, through hydrological criteria in the area and, thus, be able to note if there is viability for its use. Some kinds of turbines made by the national industry were verified, analyzing the technical and economical characteristics and in function of the hydro energetic-conditions of the area. The results shoed that a micro-headquarters serves the necessities and expectations of the owner at the electric energy supply. It was noted that the expenses are smaller comparing to the other expenses know in the literature, from national factories. Even though the limiting factor is the distance from the production to the consumer, the potency of 18.4 kw was enough to satisfy the local necessities. The installation of de micro headquarters will bring enhances and facilities by the fact that it represents a big social importance for the area. (author)

  12. Estudio histopatologico retrospectivo de nueve casos de Granulomatosis Micotica en el tracto digestivo de caninos

    National Research Council Canada - National Science Library

    Emiro Vale-Echeto, Oswaldo; Oviedo de Vale, Maria Guadalupe; Simoes, David

    2013-01-01

    .... Estos procesos infecciosos han sido bien conocidos y controlados mediante vacunacion sistematica y terapias racionales, para evitar su diseminacion a seres humanos y garantizar la salud publica...

  13. An assessment of ninth round; Nona: uma avaliacao da rodada

    Energy Technology Data Exchange (ETDEWEB)

    Assumpcao, Eduardo; Andrade, Leila; Fontana, Raphaela [Agencia Nacional do Petroleo, Gas Natural e Biocombustiveis (ANP), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Accomplished on November, 27{sup th}, 2007, 271 exploratory blocks were offered in Round 9, distributed within 14 sectors, totalling an area of 73 thousand km{sup 2}. The following basins were included: Campos, Espirito Santo, Para- Maranhao, Parnaiba, Pernambuco-Paraiba, Potiguar, Santos, Reconcavo and Rio do Peixe. From the original lot of 67 companies qualified (31 Brazilian and 36 of foreign origin), 42 offered bids individually or in partnerships. 117 blocks were allocated to 24 winning operator companies. Other 12 enterprises won acreage as non-operator participants of joint bids. A record of R$ 2,1 billion were offered as signature bonuses along with 169.436 units of the so called minimum exploratory programs. These units may be converted to an estimated R$ 1,4 billion. The objective of this paper is to evaluate the results obtained in Round 9, analyzing collected data through three different perspectives of aggregate results: bidding companies, offered areas and exploratory models. (author)

  14. Systematic review and gamma radiosensitivity of medicinal plants: development of protocol for quality control; Revisao sistematica e radiossensitividade gama de plantas medicinais: desenvolvimento de protocolo para controle de qualidade

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Ralph Santos

    2006-07-01

    The present study discusses the contribution of the adoption of more rigorous and objective criteria to the selection and analysis of information sources, leading to more scientific rigour when registering phytotherapic drugs. To this end, it is herein proposed the adoption of a previously tested and acknowledged methodology, namely the Systematic Revision, as a standard for phytotherapic drug analyses. In order to show differences brought about by the Systematic Revision during the registration procedures of phytotherapic drugs, the case of the Maytenus ilicifolia (known popularly in Brazil as 'espinheira-santa') is presented. As it is well known, the use of ionizing radiation is expanding, especially in medicine and pharmacy. Therefore, gamma radiation was applied to the microbiological quality control of phytotherapic matrices. Results indicated a positive contribution of Systematic Revision to the registration procedures of phytotherapic drugs, as well as the advantages of using gamma radiation to the microbiological quality control of phytotherapic matrices. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-07-01

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

  16. Evaluation of new polymers for enhanced oil recovery; Avaliacao de novos polimeros para recuperacao aumentada de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Maia, Ana M.S.; Chagas, Emanuel F.; Costa, Marta; Garcia, Rosangela B. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2004-07-01

    The main polymers used nowadays for enhanced oil recovery, partially hydrolysed polyacrylamides and xanthan gum, show some limitations, such as low tolerance to salt presence and biological degradation. Therefore, it is necessary the improvement of the polymeric properties. With this goal, a new class of polymers, named 'water-soluble polymers hydrophobically modified' or simply 'amphiphilic polymers', has been developed. In this work, it was obtained a water-soluble acrylamide polymer hydrophobically modified with N,N-dihexyl acrylamide, using the micellar copolymerization technique. After the structural and rheological characterization of the copolymer, its performance in porous medium was evaluated through core flood tests in Botucatu sandstone. In the presence of sodium chloride, the amphiphilic copolymer presented a great increase of viscosity, besides values of resistance factor and of residual resistance factor higher than for the commercial polyacrylamide. This behavior can favor the oil recovery, mainly in high salinity and permeability reservoirs, by improving the water flooding sweep efficiency. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2005-07-01

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

  20. Methodology to evaluation of the density in radiographic image; Metodologia para avaliacao de densidade em imagem radiografica

    Energy Technology Data Exchange (ETDEWEB)

    Louzada, M.J.Q. [UNESP, Aracatuba, SP (Brazil). Curso de Medicina Veterinaria; Pela, C.A. [Sao Paulo Univ., Ribeirao Preto, SP (Brazil). Faculdade de Filosofia, Ciencias e Letras; Belangero, W.D. [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Ciencias Medicas; Santos-Pinto, R. [UNESP, Aracatuba, SP (Brazil). Faculdade de Odontologia

    1998-12-01

    This study was designed in order to optimize the optical densitometry technique in radiographic images by the setorization of the characteristic curves of the radiographic films. We used 24 radiographs of a stepped aluminium wedge that were taken without rigorous control development and manually revealed. The densitometric values of the steps images and its thickness, for each radiographic, was utilized to generate its particular mathematics expressions that represent its characteristic densitometric curves and then it were used for setorization. The densitometric values were obtained by a Macbeth TD528 densitometer. The study showed an optimization in the representation of the relationship between the optical density of the steps images of the wedge and its correspondent thickness, provided by the setorization, with mean square error around 10{sup -5}. This optimization will allow the use of this methodology in quantitative evaluations of bone mass, by radiographic images. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Valente, Andre Luiz de Carvalho

    1997-07-01

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

  2. 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)

  3. Evaluation of effective dose in consequence of Para chestnut ingestion; Avaliacao da dose efetiva em consequencia da ingestao de castanha do Para

    Energy Technology Data Exchange (ETDEWEB)

    Bellintani, Sandra A.; Oliveira, Joselens de; Carvalho, Jurandyr S. de; Hiromoto, Goro [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)

    1995-12-31

    Commercial samples of Brazil nut tree seed (Bertholletia excelsa) were analysed for the presence or uranium and thorium series of natural radionuclides. The samples were analysed for the content of {sup 238} U, {sup 226} Ra, {sup 210} Pb, {sup 232} Th, {sup 228} Th. Mean values 1.4 {+-} 0.4 Bq/kg for {sup 238} U, 26.3{+-}4.1 Bq/kG for {sup 226} Ra, 4.7{sup {+-}}1.8 Bq/kg for {sup 210} Pb, 16.5{+-}4.3 Bq/kg for {sup 232} Th, 31.3{+-}6.4 Bq/Kg for {sup 228} Ra and 12.3{+-}5.1 Bq/kg for {sup 228} Th. The effective dose due to the ingestion of natural radionuclides contained in the Brazil nuts, is 2.6 x 10{sup -2} mSv/kg ingested per year. (author). 9 refs., 1 tab.

  4. Archivos y empresas: un consenso ineludible

    National Research Council Canada - National Science Library

    Vivas Moreno, Agustin

    2011-01-01

    ... la planificacion de un sistema archivistico en cualquier organizacion empresarial (fase de analisis, elaboracion y diseno, implantacion del sistema y control). Para esto ultimo, realizamos una comparacion sistematica de lo que dicen al respecto algunos autores.

  5. Capo Mannu Project 2012 - Ricognizione sistematica del territorio

    Directory of Open Access Journals (Sweden)

    Giandaniele Castangia

    2013-12-01

    Full Text Available In this paper the author presents the results of the second systematic survey campaign of the Capo Mannu Project - September/October 2012. During this second season the team's work - a total of 137 hectares were investigated - focused in particular on the surroundings of the nuraghi Su Cunventu, Spinarba and S'Omu in the Eastern part of the study area, where some new Bronze/Iron Age settlements have been identified. Furthermore, new prehistoric tombs have been discovered in the area of Sa Rocca Tunda, where only two of them were formerly known due to illegal excavations carried out in the last decades.

  6. Capo Mannu Project 2012 - Ricognizione sistematica del territorio

    National Research Council Canada - National Science Library

    Giandaniele Castangia

    2013-01-01

    .... During this second season the team's work - a total of 137 hectares were investigated - focused in particular on the surroundings of the nuraghi Su Cunventu, Spinarba and S'Omu in the Eastern part...

  7. Capo Mannu Project 2012 - Ricognizione sistematica del territorio

    OpenAIRE

    Giandaniele Castangia

    2013-01-01

    In this paper the author presents the results of the second systematic survey campaign of the Capo Mannu Project - September/October 2012. During this second season the team's work - a total of 137 hectares were investigated - focused in particular on the surroundings of the nuraghi Su Cunventu, Spinarba and S'Omu in the Eastern part of the study area, where some new Bronze/Iron Age settlements have been identified. Furthermore, new prehistoric tombs have been discovered in the area of Sa Roc...

  8. Avaliacao de interacoes medicamentosas potenciais em prescricoes da atencao primaria de Vitoria da Conquista (BA, Brasil

    Directory of Open Access Journals (Sweden)

    Danyllo Fabio Lessa Leao

    2014-01-01

    Full Text Available As interações medicamentosas são fatores de risco para a ocorrência de reações adversas a medicamentos. Este estudo teve o objetivo de avaliar as interações medicamentosas potenciais em prescrições da atenção primária de Vitória da Conquista (BA, visando preencher a lacuna de conhecimento sobre essa temática no Brasil. Foram coletadas informações sobre diversas variáveis de prescrições oriundas da atenção primária e as interações medicamentosas avaliadas a partir dos bancos de dados do Medscape e Micromedex(r. Verificou-se ainda a frequência de polifarmácia e associação desta com a ocorrência de interações medicamentosas. Os resultados mostraram frequência de 48,9% de interações medicamentosas, 74,9% delas de gravidade moderada ou maior, e 8,6% de prescrições em polifarmácia que, em teste qui-quadrado, mostrou associação positiva com ocorrência de interações medicamentosas potenciais (p < 0,001. As prescrições oriundas da atenção primária de Vitória da Conquista (BA apresentaram uma alta frequência de interações medicamentosas, porém faz-se necessária a análise de outros fatores de risco para ocorrência destas nesse nível de atenção à saúde.

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

    Directory of Open Access Journals (Sweden)

    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.

  10. Conteudos e Metodologias de Ensino de Avaliacao Psicologica: um Estudo com Professores

    Directory of Open Access Journals (Sweden)

    Ana Paula Porto Noronha

    2013-04-01

    Full Text Available O presente estudo teve como objetivo verificar os conteúdos ministrados e as metodologias de ensino utilizadas por professores de graduação em Psicologia, especificamente nas disciplinas relacionadas à avaliação psicológica. O instrumento utilizado foi um questionário com duas seções, a primeira com o objetivo de caracterizar os participantes, e a segunda abordando as disciplinas ministradas. Participaram do estudo 22 professores. Dos respondentes, 72,7% eram do sexo feminino, 77,3% eram docentes de avaliação psicológica e 45,5% se formaram em universidades públicas. Para a questão aberta, sobre as disciplinas ministradas, foram estabelecidas categorias de análise e análise de juízes. Pôde-se constatar que, quanto ao conteúdo ministrado, as técnicas são ensinadas pela maior parte dos respondentes, ao lado dos fundamentos teóricos dos testes. Em contrapartida, o histórico da avaliação e os princípios da elaboração de documentos psicológicos foram os menos contemplados.

  11. 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)

  12. Evaluation of safety requirements of erbium laser equipment used in dentistry; Avaliacao de requisitos de seguranca de um equipamento a laser de erbio para fins odontologicos

    Energy Technology Data Exchange (ETDEWEB)

    Braga, Flavio Hamilton

    2002-07-01

    The erbium laser (Er:YAG) has been used in several therapeutic processes. Erbium lasers, however, operate with energies capable to produce lesions in biological tissues. Aiming the safe use, the commercialization of therapeutic laser equipment is controlled in Brazil, where the equipment should comply with quality and safety requirement prescribed in technical regulations. The objective of this work is to evaluate the quality and safety requirements of a commercial therapeutic erbium laser according to Brazilian regulations, and to discuss a risk control program intended to minimize the accidental exposition at dangerous laser radiation levels. It was verified that the analyzed laser can produce lesions in the skin and eyes, when exposed to laser radiation at distances smaller than 80 cm by 10 s or more. In these conditions, the use of protection glasses is recommended to the personnel that have access to the laser operation ambient. It was verified that the user's training and the presence of a target indicator are fundamental to avoid damages in the skin and buccal cavity. It was also verified that the knowledge and the correct use of the equipment safety devices, and the application of technical and administrative measures is efficient to minimize the risk of dangerous expositions to the laser radiation. (author)

  13. Method for evaluating natural gas demand scenarios (Demangas Project); Metodologia para avaliacao de cenarios de demanda pelo gas natural (Projeto Demangas)

    Energy Technology Data Exchange (ETDEWEB)

    Lindau, Luis Antonio [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Lab. de Sistemas de Transportes; Santos, Gilberto T. dos; Silva, Silvio C. da; Ribeiro, Jose Luis D.; Fogliatto, Flavio S. [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Lab. de Otimizacao de Produtos e Processos

    2004-07-01

    This paper presents the methodology developed for the evaluation of the existing and potential market for natural gas in the industrial, automotive, residential and commercial sectors of Rio Grande do Sul. The methodology is based upon a marketing research framework and consists of the definition of the problem; application of qualitative, quantitative and stated-preference enquiries; review of the state-of-the-art and state-of-the-practice; and, also, interviews with specialists. The methodology is consolidated in four software that enable the simulation of different demand scenarios of natural gas up to the year 2010. The development of this methodology comprised the participation of more than 1,000 potential users of natural gas and allowed the state company in charge of distributing natural gas to: structure the problem of forecasting the consumption of natural gas within a new context of competition in the energy industry; help the formulation of the strategic plan of the company with regard to investment strategies and incrementing the number of clients; and propose marketing efforts to promote the adoption of natural gas as an alternative energy source. (author)

  14. 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)

  15. Development of a methodology for automated assessment of the quality of digitized images in mammography; Desenvolvimento de metodologia para avaliacao automatizada da qualidade de imagens digitalizadas em mamografia

    Energy Technology Data Exchange (ETDEWEB)

    Santana, Priscila do Carmo

    2010-07-01

    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. The purpose of this study is to develop a computational methodology to automate the process of assessing the quality of mammography images through techniques of digital imaging processing (PDI), using an existing image processing environment (ImageJ). With the application of PDI techniques was possible to extract geometric and radiometric characteristics of the images evaluated. The evaluated parameters include spatial resolution, high-contrast detail, low contrast threshold, linear detail of low contrast, tumor masses, contrast ratio and background optical density. The results obtained by this method were compared with the results presented in the visual evaluations performed by the Health Surveillance of Minas Gerais. Through this comparison was possible to demonstrate that the automated methodology is presented as a promising alternative for the reduction or elimination of existing subjectivity in the visual assessment methodology currently in use. (author)

  16. Dose evaluation for periapical radiographs in the city of Limeira, Sao Paulo, Brazil;Avaliacao de dose para radiografias periapicais na cidade de Limeira

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Melquisedec O. da [Vigilancia Sanitaria de Limeira, SP (Brazil); Leite, Marina S.; Costa, Alessandro M. [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Filosofia, Ciencias e Letras. Dept. de Fisica e Matematica; Ghillardi Netto, Thomaz [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Medicina. Hospital das Clinicas

    2009-07-01

    In this work a study of the entrance surface air kerma for periapical radiographs in the city of Limeira, Sao Paulo state, was carried out. Measurements were performed in ten X-ray equipment for periapical radiographs. The values obtained were compared with the diagnostic reference level recommended in national regulation and has suggested a local diagnostic reference level of 2.70 mGy. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

  18. Evaluation of pulp and mortar to pack bitumen radioactive waste; Avaliacao de pastas e argamassas para o embalado de rejeitos radioativos betuminizados

    Energy Technology Data Exchange (ETDEWEB)

    Gregorio, Marina da S.; Vieira, Vanessa M.; Tello, Cledola C.O., E-mail: msg@cdtn.br, E-mail: vanessamotavieira@gmail.com, E-mail: tellocc@cdtn.br [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2013-07-01

    According to international experience, for the deposition of cement in surface repository, is necessary the use of cement mortar pastes to immobilize the product. Determining the most efficient folder or for the packed mortar, as well as its ideal formulation, is the goal of this study. To do various experiments with samples of cement paste and mortar, with presence of fluxing and / or clay were performed. Viscosity, density, setting time and compressive strength were evaluated. This study will be presented only the results found in testing of compressive strength to be an essential parameter in the transport, storage and disposal of the product. From the results found will be selected the best formulations for use in packed bitumen tailings from the National Radioactive Waste Repository.

  19. Evaluation of performance of electronic dosimeters for individual monitoring: tests in laboratory; Avaliacao do desempenho de dosimetros eletronicos para monitoracao individual: testes em laboratorio

    Energy Technology Data Exchange (ETDEWEB)

    Garzon, W.J.; Khoury, H.J.; Barros, V.S.M. de, E-mail: wjaramig@gmail.com [Universidade Federal de Pernambuco (UFPE), Recife (Brazil). Departamento de Energia Nuclear. Laboratorio de Metrologia das Radiacoes Ionizantes; Medeiros, R.B. [Universidade Federal de Sao Paulo (EPM/UNIFESP), Sao Paulo, SP (Brazil). Departamento de Diagnostico por Imagem

    2015-07-01

    Electronic dosimeters based on direct ion storage technology are being widely used in many countries for individual monitoring in many applications of ionizing radiation. However, their use as routine dosimeter has been established in a few countries due to lack of accreditation or intercomparison programs. The objective of this study is to evaluate the performance of two direct íon storage dosimeters model available in the international market: the Miriom-Instadose-1 and RADOS DIS-1 to be eventually accepted for individual monitoring in Brazil. (author)

  20. Evaluation of Trichogramma spp. for the control of Trichoplusia ni;Avaliacao de Trichogramma spp. para o controle de Trichoplusia ni

    Energy Technology Data Exchange (ETDEWEB)

    Milanez, Andre Malacarne, E-mail: andremalak@hotmail.co [Universidade Federal Rural de Pernambuco (UFRPE), Recife, PE (Brazil). Dept. de Agronomia e Entomologia; Pratissoli, Dirceu; Polanczyk, Ricardo Antonio; Tufik, Camila Borges Antonio, E-mail: pratissoli@cca.ufes.b, E-mail: ricardo@cca.ufes.b, E-mail: camila_btufik@hotmail.co [Universidade Federal do Espirito Santo (UFES), Alegre, ES (Brazil). Dept. de Producao Vegetal; Bueno, Adeney de Freitas, E-mail: adeney@pq.cnpq.b [EMBRAPA Soja, Londrina, PR (Brazil)

    2009-10-15

    The objective of this study was to evaluate the biological characteristics of the parasitoids Trichogramma acacioi, T. atopovirilia, T. marandobai, T. demoraesi, T. exiguum (two lines), and T. pretiosum (six lines), reared on eggs of Trichoplusia ni. The experiment was carried out in a completely randomized design, with 15 replicates. The biological characteristics evaluated were: parasitism, viability, sexual ratio and number of individuals per egg. The parasitism percentage varied between 7.66 and 53%, with highest value observed for Trichogramma pretiosum Tspd line, and the lowest for the T. pretiosum Trecife line. There was no significant difference for the viability, which remained higher than 85%. The sex ratio varied from 0.75 to 1, and Tspd line showed the lowest value. The number of individuals per egg varied between 2.39 for T. marandobai (Tm1 line) and 1.34 for T. exiguum (Te1 line). T. pretiosum (Tspd line) was the species with the best performance in laboratory with the highest values observed in parasitism and in viability. (author)

  1. Falling hammer use evaluation for hot deformation hardness testing; Avaliacao do uso de um martelo de queda, para a determinacao da resistencia a deformacao a quente

    Energy Technology Data Exchange (ETDEWEB)

    Beck, J.C.P.C.; Cauduro, Carlos R.; Schaeffer, Lirio [Rio Grande do Sul Univ., Porto Alegre, RS (Brazil)

    1990-12-31

    This work performs a evaluation of the characteristics hot leaking of a 8620 stainless steel, deformed at 870 deg C. The tools associated with the measurements was described and a comparison between the theoretical values and the values experimentally obtained from the performed tests. 5 figs., 3 refs.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2004-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2016-07-01

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

  4. Evaluation of nanofiltration membranes for treatment of liquid radioactive waste; Avaliacao de membranas de nanofiltracao para o tratamento de rejeito radioativo liquido

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Elizabeth Eugenio de Mello

    2013-07-01

    The physicochemical behavior of two nanofiltration membranes for treatment of a low-level radioactive liquid waste (carbonated water) was investigated through static, dynamic and concentration tests. This waste was produced during conversion of uranium hexafluoride (UF{sub 6}) to uranium dioxide (UO{sub 2}) in the cycle of nuclear fuel. This waste contains about 7.0 mg L{sup -1} of uranium and cannot be discarded to the environment without an adequate treatment. In static tests membrane samples were immersed in the waste for 24 to 5000 h. Their transport properties (hydraulic permeability, permeate flux, sulfate and chloride ions rejection) were evaluated before and after immersion in the waste using a permeation flux front system under 0.5 MPa. The selective layer (polyamide) was characterized by zeta potential, contact angle, scanning electron microscopy for field emission, atomic force microscopy, infrared spectroscopy, x-ray fluorescence and thermogravimetric analysis before and after static tests. In dynamic tests the waste was permeated under 0.5 MPa, and the membranes showed rejection to uranium above 85% were obtained. The short-term static tests (24-72 h) showed that the selective layer and surface charge of the membranes were not chemical changed, according infrared spectra data. After 5000 h a coating layer was released from the membranes, poly(vinyl alcohol), PVA. After this loss the rejection for uranium decreased. Permeation and concentration of the waste were carried out in permeation flux tangential system under 1.5 MPa. The rejection of uranium was around 90% for permeation tests. In concentration tests the permeated was collected continuously until about 80% reduction of the feed volume. The rejection of uranium was of the 97%. The nanofiltration membranes tested were efficient to concentrate the uranium from the waste. (author)

  5. Evaluation of plate type fuel options for small power reactors; Avaliacao de alternativas de combustivel tipo placa para reatores de pequeno porte

    Energy Technology Data Exchange (ETDEWEB)

    Andrzejewski, Claudio de Sa

    2005-07-01

    Plate type fuels are generally used in research reactor. The utilization of this kind of configuration improves significantly the overall performance fuel. The conception of new fuels for small power reactors based in plate-type configuration needs a complete review of the safety criteria originally used to conduce power and research reactor projects. In this work, a group of safety criteria is established for the utilization of plate-type fuels in small power reactors taking into consideration the characteristics of power and research reactors. The performance characteristics of fuel elements are strongly supported by its materials properties and the adopted configuration for its fissile particles. The present work makes an orientated bibliographic investigation searching the best material properties (structural materials and fuel compounds) related to the performance fuel. Looking for good parafermionic characteristics and manufacturing exequibility associated to existing facilities in national research centres, this work proposes several alternatives of plate type fuels, considering its utilization in small power reactors: dispersions of UO{sub 2} in stainless steel, of UO{sub 2} in zircaloy, and of U-Mo alloy in zircaloy, and monolithic plates of U-Mo cladded with zircaloy. Given the strong dependency of radiation damage with temperature increase, the safety criteria related to heat transfer were verified for all the alternatives, namely the DNBR; coolant temperature lower than saturation temperature; peak meat temperature to avoid swelling; peak fuel temperature to avoid meat-matrix reaction. It was found that all alternatives meet the safety criteria including the 0.5 mm monolithic U-Mo plate cladded with zircaloy. (author)

  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. Dimensioning and evaluation of a biogas carburetor for a stationary engine; Dimensionamento e avaliacao de um carburador de biogas para motor estacionario

    Energy Technology Data Exchange (ETDEWEB)

    Silva, F.M.; Lucas Junior, J.; Rezende, L.C.; Silva, S.S.S.

    2000-07-01

    Using the fundaments of carburization, this work intends the adaptation of a gasoline engine for biogas use. Two carburetor options has been evaluated: the first one consisting of the single adaptation of the original gasoline engine, and the second one proceeding the dimensioning of venturi type carburetor adapted for engine biogas running. The engine operating presents a power calculated as function of the flow and thrust pressure of 441,4 W e 478,2 W with adapted original carburetor and venturi type carburetor, showing the best result for the venturi type carburetor. The results demonstrate the improved performance of the projected venturi type carburetor.

  8. Evaluation of technological alternative for low emission gasoline in PETROBRAS; Avaliacao de alternativas tecnologicas para gasolina de baixa emissao na PETROPBRAS

    Energy Technology Data Exchange (ETDEWEB)

    Gilbert, William Richard [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES). Gerencia de Tecnologia de Catalisadores de FCC - TFCC

    2004-07-01

    More than 30% of the total NO and CO emitted to the atmosphere and up to 20% of the CO{sub 2} are produced by automobiles. New smart fuel injection systems and the three-way catalytic converter in the automobile tail pipes have dramatically reduced NO and CO emissions, but have also required a profound change in gasoline specifications, particularly in the case of sulfur content. In Brazil, the refining of Campos basin heavy crude oils with a high concentration of nitrogen and the gasoline production strongly dependent of the FCC process, have introduced additional challenges. In this work, classic solutions such as FCC feed hydrotreatment, cracked naphta post-treatment, and the use of FCC gasoline sulfur reduction catalyst additives applied to the PETROBRAS scenario will be discussed. Changes to the FCC process to produce future fuels with lower aromaticity and lower emissions in new HCCI motors, which have hybrid characteristics between Diesel and Otto power-trains will also be discussed. (author)

  9. Evaluation of parametric and nonparametric models to predict water flow; Avaliacao entre modelos parametricos e nao parametricos para previsao de vazoes afluentes

    Energy Technology Data Exchange (ETDEWEB)

    Marques, T.C.; Cruz Junior, G.; Vinhal, C. [Universidade Federal de Goias (UFG), Goiania, GO (Brazil). Escola de Engenharia Eletrica e de Computacao], Emails: thyago@eeec.ufg.br, gcruz@eeec.ufg.br, vinhal@eeec.ufg.br

    2009-07-01

    The goal of this paper is to present a methodology to carry out the seasonal stream flow forecasting using database of average monthly inflows of one Brazilian hydroelectric plant located at Grande, Tocantins, Paranaiba, Sao Francisco and Iguacu river's. The model is based on the Adaptive Network Based Fuzzy Inference System (ANFIS), the non-parametric model. The performance of this model was compared with a periodic autoregressive model, the parametric model. The results show that the forecasting errors of the non-parametric model considered are significantly lower than the parametric model. (author)

  10. Proposal for a technical-economic and environmental evaluation projects for distributed generation; Proposta de avaliacao tecnica-economica-ambiental para projetos de geracao distribuida

    Energy Technology Data Exchange (ETDEWEB)

    Fortes, Marcio Zamboti [Universidade Severino Sombra, Vassouras, RJ (Brazil); Gouvea, Marcos Roberto [Universidade de Sao Paulo (USP), SP (Brazil)

    2008-07-01

    The multi discipline effects in engineering projects, mainly in those of infrastructure, have extended the borders of research to not only evaluate them of the conventional point of view, economic and technical, but also environmental and social. On the other hand, the investor who traditionally searched alternatives only considering the economic and financial performance currently is taken to analyze also the social and environmental aspects. The model described in this paper is a solution proposal to evaluate the merit of an enterprise of distributed generation of thermal origin, considering the economic, social and environmental aspects, using merit indexes that quantify, directly, economic aspects as capital return tax and operating income eliminates, as well as social factors like the impact in the education, health, income and employment rates and still, it verifies the attendance of the environmental restrictions. The solution presented brings a simple and clear form to attribute a merit degree of aggregate to the alternatives to embed distributed generation, considering the intensity of the subjective social responsibility of the investor. The presented model is an important contribution to stimulate a form to evaluate and to prioritize the multi discipline implementation to a distributed generation enterprise, also being able, to be used as financial index or other incentives of the sort. (author)

  11. 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)

  12. 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)

  13. Computational tool for postoperative evaluation of cochlear implant patients; Ferramenta computacional para avaliacao pos-operatoria de pacientes com implante coclear

    Energy Technology Data Exchange (ETDEWEB)

    Giacomini, Guilherme; Pavan, Ana Luiza M.; Pina, Diana R. de [Universidade Estadual Paulista Julio de Mesquita Filho (IBB/UNESP), Botucatu, SP (Brazil). Instituto de Biociencias; Altemani, Joao M.C.; Castilho, Arthur M. [Universidade Estadual de Campinas (HC/UNICAMP), Campinas, SP (Brazil). Hospital de Clinicas

    2016-07-01

    The aim of this study was to develop a tool to calculate the insertion depth angle of cochlear implants, from computed tomography exams. The tool uses different image processing techniques, such as thresholding and active contour. Then, we compared the average insertion depth angle of three different implant manufacturers. The developed tool can be used, in the future, to compare the insertion depth angle of the cochlear implant with postoperative response of patient's hearing. (author)

  14. Evaluation of glycerol derivative as emulsifier for oil based drilling fluids; Avaliacao de derivados de glicerina como emulsificante para fluidos de perfuracao de base oleo

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Susan A. [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Escola de Quimica; Cavalcanti, Milena Y.; Rodrigues Junior, Jorge; Lachter, Elizabeth R.; Nascimento, Regina Sandra V. [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Inst. de Quimica

    2008-07-01

    In view of the growing search for new applications for the surplus glycerine of biodiesel production, the use of a glycerine derivative as emulsifier in oil based muds is proposed in this work. Glycerine monooleate was synthesized through esterification reaction, and characterized by NMR{sup 13}C. Its applicability as emulsifier was verified through electric stability tests performed on inverted phase drilling fluids. The obtained results were compared with two formulations containing different emulsifiers (sorbitol monooleate and trimethylolpropane monooleate). It was also evaluated the rheological properties of the formulated fluids through standard tests. It was verified that the fluid that contained the glycerine derivative showed considerably better electric stability results than the other systems. It also presented rheological properties similar to the ones shown by the system that contained the commercial emulsifier (sorbitol monooleate). Thus, it was found that glycerine monooleate is a potential substitute to the currently emulsifiers (author)

  15. Evaluation of mathematical methods and linear programming for optimization of the planning in radiotherapy; Avaliacao de metodos matematicos e programacao linear para otimizacao do planejamento em radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Fernandes, Marco A.R., E-mail: mfernandes@fmb.unesp.b [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Fac. de Medicina. Dept. de Dermatologia e Radioterapia; Fernandes, David M.; Florentino, Helenice O. [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Inst. de Biociencias

    2010-07-01

    The work detaches the importance of the use of mathematical tools and computer systems for optimization of the planning in radiotherapy, seeking to the distribution of dose of appropriate radiation in the white volume that provides an ideal therapeutic rate between the tumor cells and the adjacent healthy tissues, extolled in the radiotherapy protocols. Examples of target volumes mathematically modeled are analyzed with the technique of linear programming, comparing the obtained results using the Simplex algorithm with those using the algorithm of Interior Points. The System Genesis II was used for obtaining of the isodose curves for the outline and geometry of fields idealized in the computer simulations, considering the parameters of a 10 MV photons beams. Both programming methods (Simplex and Interior Points) they resulted in a distribution of integral dose in the tumor volume and allow the adaptation of the dose in the critical organs inside of the restriction limits extolled. The choice of an or other method should take into account the facility and the need of limiting the programming time. The isodose curves, obtained with the Genesis II System, illustrate that the adjacent healthy tissues to the tumor receives larger doses than those reached in the computer simulations. More coincident values can be obtained altering the weights and some factors of minimization of the objective function. The prohibitive costs of the computer planning systems, at present available for radiotherapy, it motivates the researches to look for the implementation of simpler and so effective methods for optimization of the treatment plan. (author)

  16. Evaluation of the aging of polymeric drilling fluids to oil wells; Avaliacao do envelhecimento de fluidos de perfuracao polimericos para pocos de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Farias, K.V.; Amorim, L.V. [Universidade Federal de Campina Grande, PB (Brazil). Unidade Academica de Engenharia Mecanica, UAEM/CCT - UFCG], e-mail: kassie@dem.ufcg.edu.br; Leite, R.S. [Universidade Federal de Campina Grande, PB (Brazil). Graduacao Engenharia de Materiais; Lira, H.L. [Universidade Federal de Campina Grande, PB (Brazil). Unidade Academica de Engenharia de Materiais, UAEMa/ CCT - UFCG

    2010-07-01

    The aim of this work is to evaluate the aging of polymeric drilling fluids to oil wells, from the rheological, filtration and lubricity properties in the temperatures 100 degree F ({approx} 38 degree C) and 150 degree F ({approx} 66 degree C). The results had been compared with a standard fluid used for the oil industry and had evidenced that the polymeric fluids had presented good thermal stability, presenting a small reduction in the rheological properties and better values of lubricity coefficient that a reference fluid. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

  18. Vehicular natural gas market: evaluation of the difficulties for its expansion; O mercado de gas natural veicular: avaliacao dos entraves para sua expansao

    Energy Technology Data Exchange (ETDEWEB)

    Maculan, Berenice Delaunay; Duarte, Aprigio Monteiro; Costa, Heloise Helena Lopes Maia da [Agencia Nacional de Petroleo (ANP), Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The Brazilian natural gas market has been little expanding in last three years. The increase is due, mainly, the consumption of energy for automotive with 63% growth per year. This is expressed in expansion of participation of the automotive segment in the matrix of consumption of natural gas, passing from 5.8% in 2000 to 9.9% in 2002 and estimates of participation in 2003 to 12%. In this context, vehicular natural gas has been on the natural gas market as the 'girl of eyes' of the sector, given the prospects for continued expansion. Thus, the object of this paper is to present the current stage of the market for VNG in Brazilian natural gas industry, from the technical, economic and regulatory analysis. Finally, will be identify the main challenges that should be pursued in the coming years, aiming to expand the use of natural gas for automotive purposes in the country, and that will allow energy integration in the Southern Cone.

  19. Performance evaluation of an automatic positioning system for photovoltaic panels; Avaliacao de desempenho de um sistema de posicionamento automatico para paineis fotovoltaicos

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Alceu Ferreira; Cagnon, Jose Angelo [Universidade Estadual Paulista (FEB/UNESP), Bauru, SP (Brazil). Fac. de Engenharia], Emails: alceu@feb.unesp.br, jacagnon@feb.unesp.br

    2009-07-01

    The need of using electric energy in localities not attended by the utilities has motivated the development of this research, whose main approach was photovoltaic systems and the search for better performance of these systems with the solar panels positioning toward the sun. This work presents the performance evaluation of an automatic positioning system for photovoltaic panels taking in account the increase in generation of electric energy and its costs of implantation. It was designed a simplified electromechanical device, which is able to support and to move a photovoltaic panel along the day and along the year, keeping its surface aimed to the sun rays, without using sensors and with optimization of movements, due the adjustment of panel's inclination take place only once a day. The obtained results indicated that the proposal is viable, showing a compatible cost compared to the increase in the generation of electricity. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Moura, Ricardo Drumond de

    2002-10-01

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

  1. 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)

  2. Development and evaluation of a high performance lubricant for industrial gears; Desenvolvimento e avaliacao de lubrificantes de alto desempenho para engrenagens industriais

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Laura Denise Santiago de; Silva, Ademir Oliveira da [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil); Oliveira, Adelci Menezes de [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES)

    2008-07-01

    Nowadays, new machines are submitted to higher efforts with smaller clearances. For them it is necessary to develop high performance lubricants in order to reduce friction, wear and emissions for internal combustion engines. In this work it was developed two lubricants, prepared with MoS{sub 2} (Molybdenum Disulfide) and LIC (Lubricant Intermetallic Compound), and they were compared to commercial oil, at the same viscosity grade ISO VG 320. The oils were tested in a four ball tribometer, at 1200 rpm, at initial temperature of 40 deg C and at 80 kgf. The friction reduction was of 13 % and 18 % for MoS{sub 2} and LIC oil, respectively. The wear was the same for all tested oils. Besides tests in the four ball machine, all oils were characterized by viscosity, demulsibility and atomic emission spectroscopy. The lubricants formulated with solids particles were considered as high performance. (author)

  3. Voxel model for dosimetric assessment after {sup 131} I administration; Modelo de Voxel para avaliacao dosimetrica apos administracao de {sup 131} I

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, Alexandre Cassio; Campos, Tarcisio P.R. [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Dept. de Engenharia Nuclear

    2002-07-01

    This paper presents a computational model namely DIMV (Internal Dosimetry based on Multi-Voxel) to evaluate the dose distribution in tissues and organs of a patient submitted to radioiodine therapy. The DIMV provides dosimetric evaluations personally for each patient, and should be a powerful tool in the daily routine. The dosimetric evaluation is based on the Monte Carlo code - MCNP. Radiological images (CT, MRI, cintilography) from the patient, coupled to information about chemical composition of the tissues and organs are the input date for DIMV. The system works as a pre-processor preparing data to MCNP code. A case example is provided. (author)

  4. Evaluation of attenuating materials: model for the distribution of scattered radiation; Avaliacao de materiais atenuadores: modelo para a distribuicao da radiacao espalhada

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Paulo R. [Sao Paulo Univ., SP (Brazil). Inst. de Energia e Eletrotecnica; Caldas, Linda V.E. [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)

    1996-12-31

    A mathematical model for the behaviour of the distribution of photon scattered by attenuating media is presented. Shielding barriers or attenuating materials used in tests of quality control in radiology are proposed. Comparative results for Lucite are reported 6 refs., 2 figs.

  5. 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...

  6. Evaluation of mechanical and electrical properties for an aluminium alloy thermo resistant for application in electrical cables and wires; Avaliacao das propriedades mecanicas e eletricas para uma liga de aluminio termorresistente para aplicacao em fios e cabos eletricos

    Energy Technology Data Exchange (ETDEWEB)

    Amaral, M.A.; Reis, W.L.S.; Souza, A.T.M.D.; Quaresma, J.M.V. [Universidade Federal do Para, Belem, PA (Brazil)

    2010-07-01

    With the constant growth of brazilian industry and, consequently, the demand for electric power, realized the need to develop new metal alloys for use in wire and cable transmission and distribution of electricity to support the high temperatures which will be submitted. this study is based on the modification of aluminum by contents of Zr. the alloys were cast into ingot shaped {sup u,} after machined to a diameter of 18 mm, were homogenized and cold-worked (rolled). subsequently underwent a series of heat treatments at temperatures (230 degree c, 310 degree c and 390 degree c) for one hour in order to obtain the recrystallization temperature of alloys and demonstrate its potential for thermo resistant. With the inclusion of increasing contents of Zr, the alloy showed a higher recrystallization temperature and an increase in their limit of tensile strength. (author)

  7. Evaluation of detectors for blood bioanalysis in Lu-177 and I-131 therapies for bone marrow dosimetry; Avaliacao de detectores para bioanalise de sangue em terapias com Lu-177 and I-131 para dosimetria de medula ossea

    Energy Technology Data Exchange (ETDEWEB)

    Degenhardt, Amilie Louize

    2016-10-01

    The measures traceability is mandatory for minimizing uncertainties in internal dosimetry for radiopharmaceuticals clinical studies and ensures the quality of the standard. Equipment should have resolution and efficiency compatible with radionuclides energies and, additionally, be able to quantify variations in human bodies' activities samples since the initial administration near the minimum residual activities. For testing three equipment (ionization chamber Capintec 25R, sodium iodine scintillator LTI Genesys Gamma-1 and high hyperpure germanium detector Canberra), they were prepared Lu-177 and I-131 radiation sources simulating patient's blood samples activities by adopting the following hypothesis: (1) initial activities according the Brazilian protocols; (2) blood volume in the whole body (5.3 L for adult men and 1.4 L for 5 years-old children); (3) effective half-lives (1.61 h and 42.9 h for Lu-177 bi-exponential adjustment and 15.7 h for I-131 mono-exponential adjustment); (4) sampling between 30 min and 168 h; (v) blood density adjustments. The standard sources were measured in the secondary standard ionization chamber Centronics IG11 at the Laboratorio Nacional de Metrologia das Radiacoes Ionizantes. The Capintec ionization chamber efficiencies ranged, respectively for I-131 and Lu-177, between (111.58±0.02)% and (102.27±0.01)% and HPGe semiconductor detector efficiencies ranged, respectively, between (89.40±0.03)% and (87.80±0.04)%. For the NaI detector, when the Lu-177 sources were positioned inside the detector the efficiencies ranged between (12.66±0.01)% and (11.54± 0.07)% and when the sources were positioned at 5 cm and 10 cm from the detector the efficiencies decreased to less than 5%. For I-131 sources positioned inside the detector, the efficiencies ranged between (29.76±0.21)% and (30.20±0.04)% and they decreased to less than 5% when they were positioned at 5 cm and 10 cm from the detector (deviation greater than 95%). Comparing the reference values from the secondary standard ionization chamber for the I-131 standard sources, Capintec ionization chamber showed 111.58% (11,58% deviation), NaI detector 29.83% and HPGe detector 87.80% from the absolute values. For Lu-177 standard sources, the ionization chamber showed 102% (2% deviation), NaI detector 12.67% and HPGe detector 89.40% from the reference values. The variations observed for the equipment's efficiencies may be attributable to the radionuclides energies, since the experimental conditions were maintained (distance source-detector, detector type, temperature, background radiation). Presuming that the time of sampling and activities simulation were adequate, the equipment better performances were: the ionization chamber for the first day collecting samples and the HPGe detector for the second and subsequent days sampling. (author)

  8. Mapping of isoexposure curves for evaluation of equivalent environmental doses for radiodiagnostic mobile equipment; Mapeamento de curvas de isoexposicao para avaliacao de equivalente de dose ambiente para equipamentos moveis de radiodiagnostico

    Energy Technology Data Exchange (ETDEWEB)

    Bacelar, Alexandre, E-mail: abacelar@hcpa.ufrgs.b [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Hospital de Clinicas. Setor de Fisica Medica e Radioprotecao; Andrade, Jose Rodrigo Mendes, E-mail: jose.andrade@santacasa.tche.b [Irmandade da Santa Casa de Misericordia de Porto Alegre, RS (Brazil). Servico de Atencao a Saude e Qualidade de Vida; Fischer, Andreia Caroline Fischer da Silveira; Accurso, Andre; Hoff, Gabriela, E-mail: andreia.silveira.001@acad.pucrs.b, E-mail: andre.accurso@acad.pucrs.b [Pontificia Univ. Catolica do Rio Grande do Sul (PUC/RS), Porto Alegre, RS (Brazil). Grupo de Experimentacao e Simulacao Computacional em Fisica Medica

    2011-10-26

    This paper generates iso exposure curves in areas where the mobile radiodiagnostic equipment are used for evaluation of iso kerma map and the environment equivalent dose (H{sup *}(d)). It was used a Shimadzu mobile equipment and two Siemens, with non anthropomorphic scatter. The exposure was measured in a mesh of 4.20 x 4.20 square meter in steps of 30 cm, at half height from the scatterer. The calculation of H{sup *}(d) were estimated for a worker present in all the procedures in a period of 11 months, being considered 3.55 m As/examination and 44.5 procedures/month (adult UTI) and 3.16 m As/examination and 20.1 procedure/month (pediatric UTI), and 3.16 m As/examination and 20.1 procedure/month (pediatric UTI). It was observed that there exist points where the H{sup *}(d) was over the limit established for the free area inside the radius of 30 cm from the central beam of radiation in the case of pediatric UTI and 60 cm for adult UTI. The points localized 2.1 m from the center presented values lower than 25% of those limit

  9. Strategic environmental evaluation of natural gas - SEA/NG: a management tool for development of a environmental conservation policy; Avaliacao ambiental estrategica para o gas natural - AAE/GN: instrumento de gestao do desenvolvimento para uma politica de conservacao ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Comar, Vito; Turdera, Mirko Valenzuela; Silva, Paulo Souza; Benedetti Filho, Edemar; Santiago, Etenaldo Felipe; Costa, Fabio Edir dos Santos [Universidade Estadual do Mato Grosso do Sul (UEMS), Campo Grande, MS (Brazil). Centro de Analise e Monitoramento Ambiental do Gas Natural (GASLAB); Moretti, Edvaldo; Oliveira, Jorge Eremites de; Sciamarelli, Alan; Freitas Filho, Jose Daniel de; Vieira, Maria Helena Pereira [Universidade Estadual do Mato Grosso do Sul (UEMS), Campo Grande, MS (Brazil); Soares, Afranio Jose Soriano [UNESP, Rio Claro, SP (Brazil); Oliveira, Henrique de; Comunello, Eder [EMBRAPA, Dourados, MS (Brazil). Centro de Pesquisas Agropecuaria do Oeste (CPAO); Freire, Luiz G.M. [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The methodology for a Strategic Environmental Evaluation of Natural Gas - SEA/NG incorporates within the analysis of the project the socio-cultural, economic, energetic and environmental implications of the transformations, due to the adoption of natural gas, in the area of influence of gas pipelines and gas-powered thermo-electric plants. It was based on the case study of a gas pipeline planned to reach the city of Dourados from Campo Grande, capital of the Brazilian State of Mato Grosso do Sul, which implied the construction of a thermoelectric plant in Dourados. The SEA/NG: 1. Defines the best alternative track for gas pipelines; 2. Proposes location alternatives for gas-powered thermo-electric plants; 3. Evaluates the cumulative and synergic effects of human activities in the socio-environmental aspects; 4. Studies the dynamics of regional development; 4. Supports urban planning decisions in cities housing gas-powered thermo-electric plants; 5. Proposes a System of Analysis and Environmental Monitoring for Natural Gas. Qualitative-quantitative matrixes were used to evaluate the cumulative and synergic effects of the adoption of natural gas within the regional energy matrix, determine the best alternative track for the gas pipeline proposed from Campo Grande to Dourados, and to identify the best location for a gas-powered thermo-electric plant. The matrixes integrated the areas of geology, hydrology, ecology and socio-economics issues both in the phases of construction and operation of the pipeline. Diagrams and interactive conceptual models were also used to synthesize the principal components involved in the choice of the best gas pipeline alternative track. This project received financial grants from PETROBRAS, MSGAS, TBG and FINEP. (author)

  10. 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)

  11. 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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2004-07-01

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

  13. Avaliação do estado de hidratação de corredores amadores antes e após uma prova de meia-maratona

    OpenAIRE

    Emerson Rodrigues Pereira

    2011-01-01

    O estado de hidratacao tem influencia direta no desempenho em atividades prolongadas em ambiente quente, no entanto, os metodos para sua avaliacao se mostram contraditorios. O objetivo desse estudo foi verificar o estado de hidratacao de corredores de rua em decorrencia de uma prova oficial de meia maratona e se as variaveis urinarias e as alteracoes de massa corporal (MC) sao capazes de avaliar o estado agudo de hidratacao quando comparados com a osmolalidade lasmatica (Posm). Foram avaliado...

  14. Herramienta para hacer cuestionarios para Moodle

    OpenAIRE

    Muñoz Garcia, jesus

    2010-01-01

    Herramienta de creación de cuestionarios remotos de cuestiones SQL para Moodle. Permite también, el Aprendizaje colaborativo, para que los estudiantes puedan hacer cuestionarios de forma conjunta y desarrollar habilidades de trabajo en equipo. / Tool for Moodle to create remote quiz with SQL question. It also allows collaborative learning, so students can do together remote quiz and develop teamwork and social skills.

  15. Use of chondroitin sulphate and glucosamine sulphate in degenerative changes in TMJ: a systematic review Utilização de sulfato de condroitina e sulfato de glicosamina nas alterações degenerativas da ATM: uma revisão sistematica

    Directory of Open Access Journals (Sweden)

    Eduardo Machado

    2012-08-01

    Full Text Available INTRODUCTION: Degenerative changes in Temporomandibular Joint (TMJ have increased in prevalence and severity over the years. Within this context, it's necessary to obtain safe and effective therapies for control and management of the patient in cases of osteoarthritis and osteoarthrosis of the TMJ. Therapeutic options range from intra-articular infiltration protocols, occlusal splints, pharmacological therapies and physiotherapy and educational measures. The alternative treatment with structure-modifying agents, like as chondroitin and glucosamine sulphates, showed promising results, and especially safety. Thus, through a systematic literature review, this study aimed to analyze and discuss effectiveness and safety of chondroitin and glucosamine in degenerative changes of the TMJ. METHODS: Survey in research bases MEDLINE, Cochrane, EMBASE, Pubmed, Lilacs and BBO, between the years of 1966 and January 2009, with focus in randomized clinical trial (RCTs and quasi-randomized clinical trials, systematic reviews and meta-analysis. RESULTS: After application of the inclusion criteria 2 articles were selected, both randomized controlled double-blind clinical trials, which evaluated the effectiveness of chondroitin and glucosamine in degenerative changes of the TMJ. CONCLUSIONS: There is the necessity of further RCT, with representative samples and long follow-up time, to obtainment more precise cause-effect relationships and to achieve an effective and objective protocol involving chondroitin and glucosamine in cases of degenerative changes of the TMJ.INTRODUÇÃO: as alterações degenerativas da Articulação Temporomandibular (ATM têm aumentado em prevalência e em severidade ao longo dos anos. Dentro desse contexto, surge a necessidade de se obter terapêuticas efetivas e seguras para o controle e o manejo do paciente em situações de osteoartrite e osteoartrose da ATM. As opções terapêuticas variam desde protocolos de infiltra

  16. Equipamiento para exhibiciones itinerantes

    OpenAIRE

    Montemurro, Florencia

    2012-01-01

    El trabajo consiste en el diseño de un equipamiento para muestras itinerantes para el Museo de Ciencias Naturales de la ciudad de La Plata. Para su desarrollo se tomó como concepto la desestructuración de la imagen del Museo. El objetivo era generar una imagen más actual y renovada de este establecimiento como estrategia para atraer diferentes tipos de visitantes. (Párrafo extraído del texto a modo de resumen) Facultad de Bellas Artes

  17. Repito para recordar : Recuerdo para religar

    OpenAIRE

    Juárez, Horacio Eduardo

    2015-01-01

    Tanto la repitencia y el abandono escolar continúan generando importantes desafíos para el sistema educativo, a pesar de los grandes esfuerzos realizados en los últimos años en la Argentina para mejorar la inclusión y la calidad educativa. El presente proyecto de investigación de tipo cualitativo, se propone explorar a través de conceptos psicológicos como la transferencia, la influencia del profesor de educación física en el rendimiento académico del alumno de escuela secundaria. El vínculo ...

  18. Proposal of an integrated methodology for environmental assessment of risks and impacts to be used in strategic environmental assessment studies for the oil and natural gas sector in offshore areas; Proposta de metodologia de avaliacao integrada de riscos e impactos ambientais para estudos de avaliacao ambiental estrategica do setor de petroleo e gas natural em areas offshore

    Energy Technology Data Exchange (ETDEWEB)

    Mariano, Jacqueline Barboza

    2007-03-15

    This thesis aims to purpose an integrated methodology of environmental risk and impact assessment of the exploration and production oil and natural gas activities, to be used in strategic environmental assessment studies. It also analyzes the environmental issues associated with the upstream segment of the Brazilian oil and natural gas industry after the market opening, occurred in 1997. In this context, and under the international experience of countries that also have an open market, the strategic environmental assessment demonstrates to be the more suitable tool of public environmental management to consider the environment already during the planning phase of the oil and natural gas sector. (author)

  19. Integrated system for numerical simulation of atmosphere and weather forecasting evaluation for the Rio Paraiba do Sul basin. Part 2: evaluation of micro physics and convection parametrization; Sistema integrado de simulacao numerica da atmosfera e de avaliacao de prognosticos de tempo para bacia do Rio Paraiba do Sul. Parte 2: avaliacao da parametrizacoes de microfisica e de conveccao

    Energy Technology Data Exchange (ETDEWEB)

    Santos, I.A.; Silva, M.G.A. Justi da; Coelho, D.G.; Menezes, W.F.; Silva, A.S.; Tozzi, L.R.L.; Oliveira, I.C. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Dept. de Meteorologia]. E-mail: isimar@acd.ufrj.br

    2004-07-01

    This document evaluates the performance of the MM5 mesoscale model as function of five different parametrizations of the deep convection, as follows: the Grell, the Fritsch-Chapell, the versions 1 and 2 of the Kain-Fritsch, and the Betts-Miller, all combined to the parametrization of the Schultz microphysics. The document analyses the event of pre-frontal squall line that advanced over the Rio de Janeiro - Brazil state on September 7, 2007 with significant winds and gusts.

  20. Estrategias para negociaciones exitosas.

    Directory of Open Access Journals (Sweden)

    José B. Parra V

    2010-01-01

    Full Text Available Las estrategias de negociación son herramientas para disminuir conflictos o para intercambiar bienes y servicios. Una negociación exitosa crea relaciones de solidaridad y propicia reciprocidad, cooperación y confianza para quienes tendrán relaciones permanentes de negociación con beneficios para ambas partes. Una estrategia de negociación exitosa requiere manejar el desarrollo del ambiente social del grupo de personas, con la finalidad de tener presente las fronteras que no pueden irrumpirse. Otro aspecto importante, es el lenguaje corporal utilizado por las personas y las tácticas que se practican. El manejo de esta información permite diseñar diferentes modelos de negociaciones para cada caso específico. Este documento propone la utilización de la herramienta MONACO, diseñada por los autores, que es un software útil para encontrar los mejores tácticas posibles dentro de una negociación; basándose en el lenguaje corporal que muestra el negociante oponente durante cada oferta monetaria. El uso de este software da al negociador la oportunidad de manejar las negociaciones con mayor control, el negociador que usa el software puede elegir una estrategia de acuerdo a las relaciones que espera mantener con el negociador oponente.

  1. Tiempo para un cambio

    Science.gov (United States)

    Woltjer, L.

    1987-06-01

    En la reunion celebrada en diciembre dei ano pasado informe al Consejo de mi deseo de terminar mi contrato como Director General de la ESO una vez que fuera aprobado el proyecto dei VLT, que se espera sucedera hacia fines de este aAo. Cuando fue renovada mi designacion hace tres aAos, el Consejo conocia mi intencion de no completar los cinco aAos dei contrato debido a mi deseo de disponer de mas tiempo para otras actividades. Ahora, una vez terminada la fase preparatoria para el VLT, Y habiendose presentado el proyecto formalmente al Consejo el dia 31 de marzo, y esperando su muy probable aprobacion antes dei termino de este ano, me parece que el 10 de enero de 1988 presenta una excelente fecha para que se produzca un cambio en la administracion de la ESO.

  2. Instrucciones para autores

    OpenAIRE

    Juan Carreño Cardozo

    2015-01-01

    Instrucciones para autoresNota preliminar: ¡Es de suma importancia que antesde enviar cualquier documento a la Revista GeologíaColombiana, lea y cumpla cuidadosamente cada uno delos subíndices de las Normas para autores!A partir del Volumen 35 (2010) recibimos artículosprincipalmente a través del sistema digital enhttp://www.revistas.unal.edu.co/index.php/geocol/index.Si quiere enviar un artículo, por favor regístrese comoAutor en el menú INGRESAR (aquí pueden registrarsetambién evaluadores u...

  3. Control interno para MIPYMES

    OpenAIRE

    Becerra Pineda, Cindy Johana; Salgado Vera, Ginna Paola

    2014-01-01

    El objetivo general del presente trabajo es proponer un modelo que ayude a detectar y mitigar los riesgos a los que están expuestas las micro, pequeñas y medianas empresas y así contribuir a asegurar un adecuado desarrollo operacional en las MIPYMES, para lo cual se planteó la elaboración de un modelo para estructurar el control interno en estas empresas. El trabajo se desarrolló en cuatro capítulos: el primero introduce al control interno, indicando la importancia dentro de un negocio; el se...

  4. Master Plan para UNIMAK

    OpenAIRE

    Llorente Moreno, Francisco; Navarrete Mancebo, Gonzalo; Cruz Pinilla, Javier de la; García Méndez, María; Lacastagneratte de Figueiredo, Laura

    2012-01-01

    El Master Plan de UNIMAK se presenta como una apuesta a futuro, no solo para la Universidad de Makeni, sino también para la propia ciudad de Makeni. Se pretende potencias la Universidad como una referencia a nivel regional y como desencadenante de la estructura de trazado de la ciudad. El proyecto plantea potencial la dualidad que existe entre la infraestructura viaria y la red verde , existente en la ciudad, introduciéndola en el nuevo desarrollo del campus universitario y dotándola de la i...

  5. Combinatoria para la escuela

    OpenAIRE

    Sarmiento, Benjamín; Fernández, Felipe

    2014-01-01

    Con este cursillo se pretende mostrar a los asistentes que el análisis combinatorio no es una temática exclusiva para los que se inician en el estudio de las probabilidades y que no se requiere llegar a ese nivel, para empezar a conocer los principios combinatorios y las reglas básicas de esta rama. Por eso se ha seleccionado un conjunto de problemas y situaciones que se puedan llevar a la escuela. A lo largo del cursillo se propondrán situaciones clásicas relacionadas con los principios y re...

  6. Evaluation of radiotherapy methods for adaptative head and neck treatment with RapidArc®; Avaliacao de uma metodologia de radioterapia adaptativa para tratamentos de cabeca e pescoco com RapidArc®

    Energy Technology Data Exchange (ETDEWEB)

    Mazaro, Sarah J.; Vasconcellos, Herminiane L.; Silva, Laura E. da; Bastos, Fernanda M.; Silva, Leonardo P. da; Alvaro S; Migoviski, Igor, E-mail: sarahmazaro@yahoo.com.br [Instituto Nacional de Cancer Jose de Alencar Gomes da Silva (INCA), Rio de Janeiro,RJ (Brazil)

    2015-08-15

    Head and neck cancer is considered a public health problem worldwide. The intensity-modulated techniques have shown benefit in the treatment of these sites, particularly with respect to reduction of deterministic effects of risk, such as parotid. Anatomical variations in cases of head and neck are very frequent and may lead, for example, to an overdose in the parotid. This can be mitigated if making use of adaptive radiation therapy. The work aims to analyze a methodology to redo the planning of treatments, through 02 acquisitions of TC. The results showed that, due to a reduction in the volumes of the parotid, the doses delivered to these organs are underestimated, which is relevant to readapt the treatment, with the addition of only a second scan without the need of the third. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Marumo, Julio Takehiro

    2006-07-01

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

  8. Mechanical and electrical evaluation of a dilute aluminium alloy heat treated for application in electrical cables and wires; Avaliacao mecanica e eletrica de uma liga diluida de aluminio tratada termicamente para aplicacao em fios e cabos eletricos

    Energy Technology Data Exchange (ETDEWEB)

    Freitas, E.S. [Faculdade de Engenharia Mecanica - Unicamp - Campinas, SP (Brazil)], e-mail: manu@fem.unicamp.br; Kamizono, K.A.; Nogueira, P.; Nogueira, A.T.; Quaresma, Jose Maria do Vale [Universidade Federal do Para - UFPA, PA (Brazil)

    2010-07-01

    With the need to investigate new materials developed and presented to the market of non-ferrous materials and in particular those developed for the transmission and distribution of electricity, we conducted a study on a dilute alloy Al-EC-0, 7% Si, where from his previous characterization and thus knowing their good mechanical and electrical properties, we developed a new aluminum alloy in an attempt to know the properties of the alloy Al-EC-0, 7% Si in the presence of alloying elements, titanium. Being the new alloy under different thermal treatment temperature in order to observe their behavior under such mechanical and electrical conditions. (author)

  9. Assessment of environmental impact models in natural occurring radionuclides solid wastes disposal from the mineral industry; Avaliacao de modelos de impacto ambiental para deposicao de residuos solidos com radionuclideos naturais em instalacoes minero-industriais

    Energy Technology Data Exchange (ETDEWEB)

    Pontedeiro, Elizabeth May Braga Dulley

    2006-07-15

    This work evaluates the behavior of wastes with naturally occurring radionuclides as generated by the mineral industry and their final disposal in landfills. An integrated methodology is used to predict the performance of an industrial landfill for disposal of wastes containing NORM/TENORM, and to define acceptable amounts that can be disposed at the landfill using long-term environmental assessment. The governing equations for radionuclide transport are solved analytically using the generalized integral transform technique. Results obtained for each compartment of the biogeosphere are validated with experimental results or compared to other classes of solutions. An impact analysis is performed in order to define the potential consequences of a landfill to the environment, considering not only the engineering characteristics of the waste deposit but also the exposure pathways and plausible scenarios in which the contaminants could migrate and reach the environment and the human population. The present work permits the development of a safety approach that can be used to derive quantitative waste acceptance criteria for the disposal of NORM/TENORM waste in landfills. (author)

  10. Niobium (V) doped bioceramics: evaluation of the hydrothermal route modified with citric acid and urea to obtain modified hydroxyapatite; Bioceramicas aditivadas com niobio (V): avaliacao da rota hidrotermica modificada com acido citrico e ureia para obtencao de hidroxiapatitas modificadas

    Energy Technology Data Exchange (ETDEWEB)

    Simomukay, E.; Souza, E.C.F. de; Antunes, S.R.M.; Borges, C.P.F.; Michel, M.D.; Antunes, A.C. [Universidade Estadual de Ponta Grossa (UEPG), Ponta Grossa, PR (Brazil)

    2016-01-15

    Synthetic hydroxyapatite (Ca{sub 10}(PO{sub 4}){sub 6}(OH){sub 2}; HA) has become a widely used ceramic material for bone reconstruction due to its biocompatibility with the bone tissue. This biocompatibility as well as other physical and chemical properties of the hydroxyapatite can be modified by the addition of different ions to its structure. Niobium (V) ion has not been commonly used in the hydroxyapatite synthesis. The objective of this study was to evaluate the use of hydrothermal route in the niobium (V) doped hydroxyapatite synthesis. The route used the niobium ammonium oxalate (NH{sub 4}H{sub 2}[NbO(C{sub 2}O{sub 4}){sub 3}].3H{sub 2}O) complex as a niobium (V) ion precursor. The addition of citric acid and urea in the hydrothermal route is used for the control of synthesis pH and precipitation rate. Pure sample and sample added with 5.3 ppm of niobium (V) ion were prepared. The coexistence of other phases besides the hydroxyapatite was not observed in any of the samples through the use of X-ray diffraction and infrared spectroscopy (FTIR) techniques. The FTIR technique revealed the presence of hydroxyapatite characteristic functional groups. The scanning electron microscopy analysis showed the formation of agglomerates composed of round particles, confirmed by the transmission electron microscopy technique. The X-ray fluorescence spectroscopic analysis detected the presence of niobium in the doped sample. The results showed that niobium (V) doped hydroxyapatite can be synthesized by means of hydrothermal route, which may be considered as huge potential for future application in bioceramics. (author)

  11. 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

  12. Evaluation of area monitor response for neutrons in radiation field generated by a 15 MV clinic accelerator; Avaliacao da resposta dos monitores de area para neutrons em campo de radiacao gerado por um acelerador clinico de 15 MV

    Energy Technology Data Exchange (ETDEWEB)

    Salgado, Ana Paula

    2011-07-01

    The clinical importance and usage of linear accelerators in cancer treatment increased significantly in the last years. Coupled with this growth came the concern about the use of accelerators with energies over to 10 MeV which produce therapeutic beam contaminated with neutrons generated when high-energy photons interact with high-atomic-number materials such as tungsten and lead present in the accelerator itself. At these facilities, measurements of the ambient dose equivalent for neutrons present difficulties owing to the existence of a mixed radiation field and possible electromagnetic interference near the accelerator. The Neutron Laboratory of the IRD - Brazilian Institute for Radioprotection and Dosimetry, aiming to evaluate the survey meters performance at these facilities, initiated studies of instrumentation response in the presence of different neutron spectra. Neutrons sources with average energies ranging from 0.55 to 4.2 MeV, four different survey meters and one ionization chamber to obtain the ratio between the dose due to neutrons and gamma radiation were used in this work. The evaluation of these measurements, performed in a 15 MV linear accelerator room is presented. This work presents results that demonstrate the complexity and care needed to make neutrons measurements in radiotherapy treatment rooms containing high energy clinical accelerators. (author)

  13. Potential assessment of Sergipe and Alagoas clays in aggregates production for use in concrete; Avaliacao do potencial de argilas de Sergipe e Alagoas na producao de agregados para uso em concreto

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, H.A.; Santos, C.P.; Oliveira, R.M.P.B.; Jesus, E. de; Macedo, Z.S., E-mail: herbetalves148@gmail.com, E-mail: cochiran@hotmail.com, E-mail: rosaneboliveira@gmail.com, E-mail: edilsonjs@ufs.br, E-mail: zelia.macedo@gmail.com [Universidade Federal de Sergipe (UFS), Sao Cristovao, SE (Brazil)

    2017-07-15

    This study aims to characterize technologically three clays employed by ceramic industries in Sergipe state, Brazil. Its potential use for the production of calcined synthetic aggregate to substitute gravel in concrete production was evaluated. The characterization of the clays included particle size and plasticity analysis, X-ray diffraction, differential and thermogravimetric analyses, dilatometry, X-ray fluorescence, organic matter content, cation exchange capacity, specific area, and scanning electron microscopy. Ceramic bodies were uniaxially pressed under 30 MPa, into rectangular and cylindrical shapes. Ceramic bodies of individual clays and also ceramic formulations were fired and subsequently characterized to determine their water absorption, apparent density, compressive strength, and grain morphology. It was observed that, after firing at 1120 deg C, two formulations presented strength, water absorption and specific mass comparable to those of gravel used in concrete. (author)

  14. Methodology to evaluate the energy associated to the industrial solid wastes: application in a metropolitan region of Campinas, Sao Paulo state, Brazil; Metodologia para avaliacao da energia associada ao residuo solido industrial: aplicacao a regiao metropolitada de Campinas

    Energy Technology Data Exchange (ETDEWEB)

    Batista, Tereza Rosana Orrico [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Curso de Pos-graduacao em Planejamento de Sistemas Energeticos; Teixeira, Egle Novaes [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Fac. de Engenharia Civil, Arquitetura e Urbanismo; Silva, Ennio Peres da [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico. Lab. de Hidrogenio

    2004-07-01

    The aim of this work is to the application of a methodology to evaluate the energy associated to the industrial solid wastes in the metropolitan region of Campinas. The methodological route proposed is: the characterization of the research area and the production/management of the industrial solid wastes; the energetic classification and the qualitative/quantitative research of the energy associated to the industrial solid wastes; and, the valuation of the applicability of the energetic utilization mechanisms proposed to the region. This methodology when applied at the Campinas metropolitan region proved to be valid and it resulted in a synthetically presentation of the social and environmental reality of the industrial sector and the destination of the wastes, as well as it indicated the potentialities related to the energetic utilization of the industrial solid waste in the region. With the obtained results it was shown the importance of the the production and the destination of the industrial solid wastes in the Campinas metropolitan region , and the meaning, in terms of electric potency, of the values of the energy associated to the wastes with a known factor of energetic conversion shown in the researched sample. (author)

  15. Ecotoxicological assessment of the pharmaceutical compound Triclosan to freshwater invertebrates with emphasis to spiked sediment tests; Avaliacao ecotoxicologica do farmaco Triclosan para invertebrados de agua doce com enfase em ensaios com sedimento marcado ('spiked sediment')

    Energy Technology Data Exchange (ETDEWEB)

    Pusceddu, Fabio Hermes

    2009-07-01

    The increasing of Pharmaceutical and Personal Care Products (PPCPs) occurrence in the aquatic environment cause adverse effects on the human health and aquatic communities. The environmental risk of the PPCPs associated with the possibility of synergic effects between PCPPs and the increase of the use of synthetic organic compounds, unchained a great concern on the toxic potential to biota aquatic. Triclosan (5-chloro-2-(2,4-dichlorophenoxy)-phenol) is a pharmaceutical compound widely used due your antibacterial mechanism effect, found in at least 932 products such as shampoos, toilet soaps, deodorants, lotions, toothpaste, detergents, socks and underwear, among others. Currently, studies about the Triclosan toxicity in the water and, mainly in the sediment, are poorly. We have the knowledge that the photodegradation of this product results into dichlorodibenzo-p-dioxin, and now it has great discussion on environmental agencies, like EPA, about the release or restriction of this product. The aim of this work is to assess the effects of Triclosan on mortality of insect larvae Chironomus xanthus and mortality and reproduction inhibition of microcrustacea Ceriodaphnia dubia exposed to Triclosan spiked sediments based on standard methods EPA and OECD. The EC50;96H obtained on acute toxicity tests with C. xanthus was 45,26 mg.Kg{sup -1}. The chronic toxicity tests with C. dubia using spiked sediments were performed following the procedure in Burton and MacPherson (1995). A no-observed-effect concentrations and lowest-observed-effect concentration were 5,78 e 6,94 mg.Kg{sup -1}, respectively. (author)

  16. Cost effective method for valuation of impacts caused by greenhouse gases emissions for oil and gas companies; Metodo de custo-efetividade para avaliacao de impactos causados pelas emissoes de gases de efeito estufa em empresas de oleo e gas

    Energy Technology Data Exchange (ETDEWEB)

    Carneiro, Elisa Vieira [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil); Barros, Sergio Ricardo da Silveira [Universidade Federal Fluminense (LATEC/UFF), Niteroi, RJ (Brazil). Mestrado em Sistemas de Gestao

    2012-07-01

    The objective of this work is to apply the method of cost-effectiveness in economic evaluation of new investment projects, based on information about reducing greenhouse gases emissions. In the context of the commitment of companies with the Climate Change and Sustainability, this work is important and contributes to the oil and gas industry, because it integrates information on reducing emissions of greenhouse gases in negative Net Present Value (NPV) projects, helping the portfolio manager on decision making between alternative projects. In this article, examples are given of two investment projects, in which the cost effectiveness methodology is applied, considering the reduction of emission of greenhouse gases such as additional environmental benefit, or cost avoidance, in an adjusted model of the economic viability analysis of meritorious projects. (author)

  17. Adaptation of the dynamic model for radiological assessment of nuclear accident in rural area under conditions of tropical climate; Adaptacao do modelo dinamico para avaliacao radiologica de acidente nuclear em area rural nas condicoes de clima tropical

    Energy Technology Data Exchange (ETDEWEB)

    Vinhas, Denise Martins

    2004-07-01

    Following an accidental release of radionuclides to the atmosphere that leads to the contamination of large areas, a detailed and fast methodology to assess the prognosis of public exposure is needed, in order to estimate radiological consequences and propose and optimize decisions related to the protection of the public. The model ECOSYS has been chosen to integrate the SIEM, the Integrated Emergency System developed by IRD/CNEN, to assess the doses at the short, medium and long term to the public after an accidental contamination of rural areas. The objective of this work is to perform the adaptation of the model ECOSYS to be used in Brazil to assess public exposure and support decision processes regarding the implementation of protective measures but also to guide the need for studies and research aiming to improve the adequacy of estimates to the actual Brazilian situation. The area select for reference to this work consists on the 50 km radius area surrounding the Brazilian nuclear power plants, located at Angra dos Reis County, in the state of Rio de Janeiro. The methodology included the definition of criteria to select agricultural cultures and animals to be simulated, taking into account both the availability of the production at the selected area and the relevance of the food to the population regional diet. Radionuclides included in this study were {sup 137}Cs, {sup 90} Sr and {sup 131} I. A large survey has been performed to gather data related to both agricultural practices and behavior of radionuclides in the selected agricultural-systems. The results of simulation indicated the relevance of the knowledge of local aspects on the estimated doses. Important factors included the kind of products produced, seasonality, agricultural practices, animals feed practices, kind of soil, and ingestion habits of the population. (author)

  18. 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)

  19. Evaluation of computational model for supervision and control of greenhouses in order to reduce the consumption of electrical energy; Avaliacao de modelo computacional para supervisao e controle de casas de vegetacao visando a reducao do consumo de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Laranjeira, Evandro Gomes; Rossi, Luis Antonio [Universidade Estadual de Campinas (FEAGRI/UNICAMP), SP (Brazil). Fac. de Engenharia Agricola

    2006-07-01

    Since a long time protected culture is a well-known technology and the increasing of biological knowledge and the new technologies development resulted in a great emphasis on climatic control. Nowadays there are several equipment in the market able to control the temperature, relative humidity, ventilation, solar radiation and artificial illumination as well. Difficulties are related to the manipulation of all these elements in an adequate way to reach the optimum climate conditions with a minimum resource and input expenses. In this project it was realized an climatic manager algorithm software evaluation using Fuzzy logic and climate models based on 'thermal loading calculation', psychrometry, managing the most common equipment available in the market with a minimum human intervention in the process. This Project has been made in two distinct structures and sorted technological levels. (author)

  20. Evaluation of anti-peptidoglycan aptamers labeled with Technetium-99m for in vivo bacterial infection identification; Avaliacao de aptameros anti-peptidoglicano marcados com Tecnecio-99m para identificacao in vivo de infecoes bacterianas

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Ieda Mendes

    2017-07-01

    Aptamers are oligonucleotides that display high affinity and specificity for their molecular targets and are emerging as promising molecules for radiopharmaceuticals development. In a previous work, we selected two aptamers for peptidoglycan (the main constituent of bacterial cell walls) termed Antibac1 and Antibac2. In the present study, the characterization of these aptamers was completed, and the dissociation coefficients (K{sub d}) were determined. The aptamers were further labeled with {sup 99m}Tc and evaluated for bacterial infection diagnosis by scintigraphy. The K{sub d} obtained for Antibac1 was of 0.415 ± 0.047 μM and for Antibac2 of 1.261 ± 0.280 μM. The direct labeling method with {sup 99m}Tc allowed radiolabel yields higher than 90% and the radiolabel stability in saline, plasma and cysteine excess indicated that the process was suitable for labeling of both aptamers. The {sup 99m}Tc-aptamers are prone to bind to plasma proteins: 39.5% ± 2.9% (1 h) and 43.6% ± 1.2% (3 h) for {sup 99m}Tc-Antibac1; 37.6% ± 2.0% (1 h) and 40.9% ± 0% (3 h) for {sup 99m}Tc-Antibac2. The blood clearance half-life for {sup 99m}Tc-Antibac1 was of 41.26 min and for the {sup 99m}Tc-Antibac2 of 31.58 min. The {sup 99m}Tc-Antibac1 in the group infected with S. aureus presented a target/non-target ratio of 2.81 ± 0.67, significantly higher than verified for the {sup 99m}Tc-library (control): 1.52 ± 0.07. In the model with C. albicans infection the target/non-target ratio for {sup 99m}Tc-Antibac1 was 1.46 ± 0.11, similar that obtained for the {sup 99m}Tc-library in the same model: 1.52 ± 0.05. The {sup 99m}Tc-Antibac2 in the group infected with S. aureus showed a target/non-target ratio of 2.61 ± 0.66, statistically higher than achieved for the {sup 99m}Tc-library in the same infection model: 1.52 ± 0.07. In the group infected with C. albicans this ratio for {sup 99m}Tc-Antibac2 was 1.75 ± 0.19, it was significantly higher than verified for the {sup 99m}Tc-library: 1.52 ± 0.05. The scintigraphic images for all groups showed a high uptake in the kidneys and bladder indicating the urinary tract as the main elimination route and the images corroborated the biodistribution results. In mice infected with S. aureus that received the {sup 99m}Tc-Antibac1 the target/non-target ratios determined by ROI analysis were 4.7 ± 0.9 at 1 h and 30 min and 4.6 ± 1.1 at 3 h, demonstrating the high uptake of {sup 99m}Tc-Antibac1 at the site of infection. Statistically lower values were found for animals infected with S. aureus that received the {sup 99m}Tc-library: 1.55 ± 0.36 at 1 h and 30 min and of 1.67 ± 0.43 at 3 h. In the group infected with C. albicans the target/non-target ratios for {sup 99m}Tc-Antibac1 were 2.0 ± 0.3 at 1 h and 30 min and 2.0 ± 0.6 at 3 h, and for the {sup 99m}Tc-library of 2.14 ± 0.29 at 1 h and 30 min and 1.88 ± 0.62 at 3 h, without statistical difference. In the group of animals infected with S. aureus that received the {sup 99m}Tc-Antibac2 the target/non-target ratios determined by ROI were of 3.5 ± 0.7 at 1 and 30 min and of 3.7 ± 1.5 at 3 h, which are statistically higher than those of {sup 99m}Tc-library. In the group infected with C. albicans, these ratios for {sup 99m}Tc-Antibac2 were of 2.5 ± 0.2 at 1 h and 30 min and of 1.9 ± 0.5 at 3 h, without statistical difference compared to the {sup 99m}Tc-library. The results demonstrated that both aptamers were effective to identify bacterial infection foci but only the {sup 99m}Tc-Antibac1 was able to distinguish a bacterial infection focus from a fungal one. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2006-07-01

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

  2. Evaluating uncertainties in the cross-calibration of parallel ion chambers used in electron beam radiotherapy; Avaliacao das incertezas no processo de calibracao cruzada de camaras de placas paralelas utilizadas em feixes de eletrons para radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Anderson, Ernani; Travassos, Paulo; Ferreira, Max da Silva; Carvalho, Samira Marques de; Silva, Michele Maria da; Peixoto, Jose Guilherme Pereira, E-mail: ernanianderson@hotmail.com [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Salmon Junior, Helio Augusto [Grupo COI - Clinicas Oncologicas, Rio de Janeiro, RJ (Brazil)

    2015-07-01

    This study aims to estimative the combined standard uncertainty for a detector parallel plate used for dosimetry of electron beams in linear accelerators for radiotherapy, which has been calibrated by the cross-calibration method. Keeping the combined standard uncertainty next of the uncertainty informed in the calibration certificate of the reference chamber, become possible establish the calibration factor of the detector. The combined standard uncertainty obtained in this study was 2.5 %. (author)

  3. Development of a methodology for doss assessment viewing the use of NORM on building materials; Desenvolvimento de uma metodologia para avaliacao de doses visando o uso de NORM em materiais de construcao

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Antonio Fernando Costa de

    2009-07-01

    The objective of this study was to develop a methodology for estimating the radiological impact on man of the residues of naturally occurring radioactive materials (NORMs) that potentially can be used for the construction of homes and roads. Residues of this type, which are being produced in great quantities by the Brazilian mining industry, are typically deposited in non-appropriated conditions such that they may have a long-time adverse impact on the environment, and hence on man. A mathematical model was developed to calculate the doses resulting from the use of NORM residues, thus allowing a preliminary analysis of the possibility to recycle the residues. The model was used to evaluate the external dose due gamma radiation, the dose to skin caused by beta radiation, and the internal dose due to inhalation of radon and its decay products. The model was verified by comparisons with results of other studies about doses due to gamma and beta radiation from finite and infinite radioactive sources, with relatively good agreement. In order to validate the proposed methodology, a comparison was made against experimental results for a house constructed in accordance with CNEN regulations using building materials containing NORM residues. Comparisons were made of the dose due to gamma radiation and the radon concentration in the internal environment. Finally, the methodology was used also to estimate the dose caused by gamma radiation from a road constructed in the state of Rondonia, Brazil, which made use of another NORM residue. (author)

  4. Synthesis of dimeric aryl{beta}-D-galactopyranosides for the evaluation of their interaction with the Erythrina cristagalli lectin; Sintese de {beta}-D-galactopiranosideos de arila dimericos para avaliacao de sua interacao com a lectina de Erythrina cristagalli

    Energy Technology Data Exchange (ETDEWEB)

    Figueiredo, Rute Cunha; Meyer, Nadia Burkowski; Prado, Maria Auxiliadora Fontes; Alves, Ricardo Jose [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Faculdade de Farmacia. Dept. de Produtos Farmaceuticos], e-mail: ricardodylan@farmacia.ufmg.br; Rojo, Javier [Consejo Superior de Investigaciones Cientificas (CSIC), Sevilla (Spain). Inst. de Investigaciones Quimicas. Grupo de Carbohidratos

    2009-07-01

    The synthesis of two new D-galactose-based dimers having a 1,4-butanediamine spacer is reported aiming at the evaluation of their interaction with the Erythrina cristagalli lectin. The title compounds were prepared in four and five steps from 2,3,4,6-tetra-O-acetyl-{beta}-D-galactopyranoside bromide, in 20 % and 15 % overall yield, respectively, using the Doebner modification of the Koenavenagel reaction as the key sep. The lectin-carbohydrate interaction could be evaluated for only one dimer, due to solubility problems. A twofold enhancement of affinity was observed, compared to the corresponding monovalent ligand. (author)

  5. Preparation, characterization and evaluation of electrocatalysts supported on functionalized carbon black for polymer exchange membrane fuel cell applications; Preparacao, caracterizacao e avaliacao de eletrocatalisadores suportados em carbono funcionalizado para aplicacao em celulas a combustivel tipo PEM

    Energy Technology Data Exchange (ETDEWEB)

    Carmo, Marcelo do

    2008-12-18

    The fuel cell technology associated with the growing exigency of low environmental impact energy became prosperous in the world energy scenery. The fuel cell is basically a device that converts directly the chemical energy of a fuel into electrical and thermal energy with a continuous operation by the constant feed of a fuel. Especially, the carbon black Vulcan XC72 is usually employed as an electro catalyst support, and some factors as an accessible and high surface area in order to get maximum particles dispersion, pore size, adequate pore distribution and the presence of functional groups in the carbon black surface are considered fundamental characteristics for an innovative materials development. However, the Vulcan XC72 still reveals insufficient conditions for these purposes. This study consists in the preparation and in the physical chemical characterization of functionalized carbon black by hydrogen peroxide and by polymeric chains with proton conduction properties, and its posterior utilization as electro catalyst support for PEMFC and DMFC application. After the carbon functionalization, an improvement in the carbon black dispersion in water media was observed, a beneficial effect for electro catalyst preparation. It was also observed, that the functional groups and the polymeric chains worked as stabilizers in the particle growing, producing much more homogeneous electrocatalysts, exhibiting smaller average particle size. Especially, in the case of polymeric chains functionalization, a decrease in the ohmic drop was observed for this system, attributed to an improvement in the proton transference. (author)

  6. Environmental assessment on karstic formations for implantation of a terrestrial pipeline: case study of the Cacimbas-Catu gas pipeline; Avaliacao ambiental para implantacao de dutos terretres em terrenos carsticos: estudo de caso Gasoduto Cacimbas-Catu

    Energy Technology Data Exchange (ETDEWEB)

    Hurtado, Shanty Navarro; Oliveira, Wilson Jose de; Braun, Oscar [PETROBRAS, Rio de Janeiro, RJ (Brazil)] (and others)

    2008-07-01

    This work concerns in the development of a study on mapping and detection of structures and geological and geotechnical features associated with karstic relief and its implications in terms of ground stability to support the pipeline as well as from the point of view of cavities / caves conservation, potentially impacted by this activity. The limited mobility of track, carried by the existing restrictions, make the route of the Cacimbas-Catu pipeline pass through the cities of Itapebi (BA), Belomonte (BA), Mascote (BA) e Camaca (BA), where the local geology is characterized by rocks of Rio Pardo Group, dating from the Superior proterozoic (lower sequence predominantly carbonatic and upper sequence predominantly terrigenous). The study included a survey of secondary data, a field survey confirming karstic features, a 2D and subsequently 3D tomography survey, and a drilling survey to direct research at points of geo-electrical anomalies. The work did not identify underground cavities on the Cacimbas-Catu pipeline route. Even taking the studies presented geo-electric anomalies the direct investigation did not confirm the presence of voids in sub-surface, which enables the implementation of pipelines in this place, however the presence of electric anomalies with high resistivity indicate geotechnical areas where special care should be taken in relation to the stability of the ground. (author)

  7. Development of methodologies for internal exposure assessment due to the radiopharmaceutical {sup 18}FDG; Desenvolvimento de metodologias para avaliacao da exposicao ocupational interna devido ao radiofarmaco {sup 18}FDG

    Energy Technology Data Exchange (ETDEWEB)

    Lacerda, Isabelle Viviane Batista de

    2013-07-01

    The production of {sup 18}F has increased in the last decade. It is produced basically for the synthesis of {sup 18}F- fluorodeoxyglucose ({sup 18}FDG), the main radiopharmaceutical used in PET (Positron Emission Tomography) scans. The growth in the frequency of these tests resulted in rise of the number of occupationally exposed individuals (OEI) to the radionuclide {sup 18}F as {sup 18}FDG, increasing thereby the probability of its accidental incorporation. This study aimed to implement optimized techniques for assessing internal exposures of individuals occupationally exposed through both in vivo and in vitro bioassay methods during production and handling of {sup 18}FDG at the Divisao de Producao de Radiofarmacos (DIPRA), Centro Regional de Ciencias Nucleares do Nordeste (CRCN-NE/CNEN). The in vivo monitoring was conducted at the Laboratorio de Dosimetria Interna, Divisao de Laboratorios Tecnico-Cientificos (DILAB). For this bioassay method, measurements were done with a 3x3' NaI(Tl) scintillation detector coupled to Genie 2000 software. The calibration of the system was performed with a brain phantom containing a standard liquid source of {sup 22}Na to simulate a contaminated individual. The calibration of the HPGe coaxial detector for in vitro monitoring was performed at the Laboratorio de Medidas de Atividade de Radionuclideos (DIPRA/CRCN-NE/CNEN) with a standard source of {sup 22}Na. Base on the calibration factors, it was possible to determine the minimum detectable activities (MDA) for the systems by using direct measurements and simulation of uncontaminated urine. Then, through the biokinetic models published by ICRP 106 and edited by the AIDE software (version 6.0), it was possible to estimate the minimum detectable effective dose (MDED), which evaluates the detection sensitivity of the techniques developed. The MDED was estimated for in vivo and in vitro measurements performed 2.4 hours after the occurrence of incorporation by ingestion, since this is the period of higher retention fraction of activity in the brain compartment and accumulated urine for {sup 18}FDG. The values obtained were compared to the recording level of 1 mSv, recommended by the IAEA. After validation of in vivo monitoring technique, measurements of the IOE from DIPRA began shortly after the end of production and quality control procedures. The in vitro internal monitoring was not performed since there was not voluntary participation to obtain the biological sample (urine). The techniques developed showed sufficient sensitivity for application to occupational internal monitoring. (author)

  8. Construction of indicators for evaluation of the results of projects under energetic and socio-environmental approach; Construcao de indice para a avaliacao de resultados de projetos sob enfoque energetico e socio-ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Berni, Mauro Donizeti; Leite, Alvaro A.F. [Universidade Estadual de Campinas (NIPE/UNICAMP), SP (Brazil). Nucleo Interdisciplinar de Planejamento Energetico], e-mail: mauro_berni@yahoo.com.br; Bacellar, Andre Melo; Soares, Luciana R. [Agencia Nacional de Energia Eletrica (ANEEL), Brasilia, DF (Brazil); Pego, Bolivar [Instituto de Pesquisa Economica Aplicada (IPEA), Sao Paulo, SP (Brazil)

    2008-07-01

    The establishment and the effective use of sustainability index incorporating variables such as energy, social and environmental, as subsidy to the socket of decision, it has globally been growing. This tool had increased his use, starting from the Conference of the United Nations on Environment and Development (Rio 92) decisions emphasizing the sustainable development. This work, proposes and it demonstrates the validation of a new methodology for evaluation of the results of projects of Research and Development (R and D), for the energy sector and environmental impacts of the implementation of the referred projects. The methodology contemplates the establishment of the Index IRA and the criteria for evaluation of the results of the projects of R and D, under the energy and social and environmental aspects. (author)

  9. Firewood and wood-shaving use energy assessment for energy generation in sericulture agroindustry; Avaliacao energetica do uso da lenha e cavaco de madeira para producao de energia em agroindustria seropedica

    Energy Technology Data Exchange (ETDEWEB)

    Nascimento, Mario Donizeti do [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Pos-Graduacao em Agronomia], E-mail: mariovmr@fca.unesp.br; Biaggioni, Marco Antonio Martin [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Dept. de Engenharia Rural], E-mail: biaggioni@fca.unesp.br

    2010-07-01

    The aim of this paper was to perform an energy assessment of firewood and wood-shaving use for energy generation in sericulture agroindustry boilers. In this research, we used a boiler from a silk spinning factory located in the city of Duartina, Sao Paulo, Brazil, that currently uses eucalyptus firewood as fuel to generate water vapour used in silk fiber production. In the studied fuels utilization system energy consumption structure development, we considered energy input in Megajoule (MJ) by type, source and form involved in several firewood use technical itinerary operations, as well as in wood-shaving use technical itinerary operations. From these fuels utilization built structure, we performed a firewood- and wood-shaving-generated energy input comparative analysis, in Megajoule/hour (MJ.h{sup -1}), to produce 2.968,80 kg.h{sup -1} of vapour, which is the boiler average production, during the following years: 2004, 2005, and 2006. The energy analysis results revealed that to replace eucalyptus firewood with wood-shaving is something possible in the boiler, reducing total energy consumption approximately by 21%. (author)

  10. Development of a control system for evaluation of renewable power plants in the water pumping; Desenvolvimento de um sistema de controle para avaliacao de fontes de energias renovaveis no bombeamento de agua

    Energy Technology Data Exchange (ETDEWEB)

    Presenco, Jose Fernando [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Pos-graduacao em Agronomia; Seraphim, Odivaldo Jose [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas. Dept. de Engenharia Rural

    2010-07-01

    The use of alternative energy systems in the current days is an urgent necessity due to the problems that the planet is facing as the heating and loss of ozone layer. The scarcity of conventional energy is another problem that must be solved for the future of humanity. It must be considered that the people are inhabiting places moved away not always with available energy. The application of technologies as automation and control can help us to solve this problem. Therefore, this work aimed at apply an equipment of industrial usage, the Programmable Logical Controller, PLC, in alternative energies systems, as eolic generation and photovoltaic generation used for water pumping, aiming the automatic control and the efficiency in the places where it has simultaneous availability of these sources, based in criterion of priority that previously established itself between them. It was made a hydraulic and energetic evaluation of the energy system, eolic and photovoltaic, used in the automatic control system of pumping, in the place of accomplishment of the experiment, according to previously established physical conditions. The results have shown that the control system using the PLC is practicable and has trustworthiness. The program developed can be adapted for the use with several power plants in a specific application place. The photovoltaic system of pumping, using a polycrystalline of 70 Watts connected to a pump Shurflo 8000, showed to be efficient with significant flows in almost all the months. The eolic system of pumping, using an eolic generator of 400 Watts assembled in place of experiment, did not demonstrate energetic capacity for use in this specific type of application. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1987-12-31

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

  12. 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)

  13. Development of methodology for evaluation of {sup 99m}Tc and {sup 131}I incorporated activities during lactation; Desenvolvimento de metodologia para avaliacao da atividade de {sup 99m}Tc e {sup 131}I em lactantes

    Energy Technology Data Exchange (ETDEWEB)

    Santos, L. [Universidade Federal do Rio de Janeiro (IF/UFRJ), RJ (Brazil). Inst. de Fisica; Dantas, A.L.A.; Mesquita, S.A. [Universidade Federal do Rio de Janeiro (IF/UFRJ), RJ (Brazil). Inst. de Fisica; Oliveira, S.M.V., E-mail: adantas@ird.gov.br, E-mail: silvia@ird.gov.br [Universidade Federal do Rio de Janeiro (IF/UFRJ), RJ (Brazil). Inst. de Fisica; Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil). Div. de Dosimetria

    2012-07-01

    Internal contamination of babies may occur for milk ingestion or inhalation of mothers occupationally exposed to ionizing radiation with possible incorporation or mothers submitted to medical exposures during lactation. Radionuclide concentrations in the mother's milk may cause organ absorbed doses in the babies proportionally to the breast volumes. Milk analysis allow to determine activities ingested by the babies by determining the peak of mother's milk considering the decrease of the activity rate and the milk activities drunk at different time intervals. The work had the aim to develop simulators and methodology to evaluate {sup 99m}Tc and {sup 131}I in lactation, in the following steps: to prepare standard solution of contaminated milk separately with {sup 99m}Tc and {sup 131}I; to build four breast simulators (600 g and 800 g) and respective calibration for two geometries (breast and whole-body) in the Whole-Body Counter Unit in Instituto de Radioprotecao e Dosimetria. The results demonstrated the system efficiency to determine {sup 99m}Tc and {sup 131}I activities in breasts during the lactation period. The methodology for positioning in the 'breast geometry' seemed to be more efficient than the 'whole-body geometry' for different breast volumes. The experiment allows achieving better evaluation of internal dosimetry of mothers and their young children. (author)

  14. Proficiency tests for evaluation of the {sup 99}Tc{sup m} measurements in the nuclear medicine; Aplicacao de teste de proficiencia para avaliacao da medicao de {sup 99}Tc{sup m} na medicina nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Iwahara, Akira; Tauhata, Luiz; Oliveira, Antonio Eduardo de, E-mail: iwahara@ird.gov.b, E-mail: tauhata@ird.gov.b, E-mail: aedu@ird.gov.b [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Nicoli, Ieda Gomes, E-mail: ieda@ird.gov.b [Comissao Nacional de Energia Nuclear (CNEN/DF), Brasilia, DF (Brazil). Escritorio de Brasilia; Alabarse, Frederico Gil; Xavier, Ana Maria, E-mail: falabarse@ird.gov.b, E-mail: axavier@ird.gov.b [Comissao Nacional de Energia Nuclear (ESPOA/CNEN-RS), Porto Alegre, RS (Brazil). Escritorio de Porto Alegre

    2009-07-01

    This work performs the performance evaluation of 55 Brazilian nuclear medicine services in activity measurement of radiopharmaceutical containing {sup 99}Tc{sup m}. Proficiency tests based on the acceptance criteria of the Regulation ISO/IEC Guide 43-1 and on the accuracy of the brazilian Regulation CNEN-NN-3.05 were applied in 63 results of activity measurements in radionuclide calibrators used by those services. The performance services has shown that the criteria of the ISO/IEC 43-1, nevertheless to be more restrictive, presents results very consistent with the accuracy criteria requested by the Brazilian regulation

  15. 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)

  16. Assessment of ionizing radiation as a risk factor for breast cancer incidence in Goiania; Avaliacao da radiacao ionizante como fator de risco para a incidencia de cancer de mama em Goiania

    Energy Technology Data Exchange (ETDEWEB)

    Lage, Leonardo Bastos

    2016-11-01

    This research aims to evaluate whether exposure to ionizing radiation to which women are subjected can be associated with the incidence of breast cancer in Goiania. The defined study area is the central region of Goiania, or the Sanitary Districts of Campinas-Centro and Sul, in which are the seven major accident sources of contamination with Cesium 137, and also, as shown by previous study, the majority of new cases of breast cancer (60,43 %). We used the geographical division of the city in census tracts and health districts. The data collection was divided in two stages: the first, for the survey of radiometric measurements, and the second, for identifying the addresses of women diagnosed with breast cancer. The radiometric survey occurred between 2010 and 2014, in which was used an environmental gamma radiation mobile measuring system. This system was composed by a high-sensitivity detector coupled to a Global Positioning System (GPS) and a microcomputer. The assembly was installed on a motor vehicle so that the height of the detector is found at one meter from the ground, and programmed to obtain a measurement of the doses absorbed in the air rate each second. The data collected were: doses absorbed in the air rate, geographical coordinates, altitude, date and time of acquisition. From Mobisys software, files were generated and from ArcGIS 10.0 platform, geospatial assessment survey through the elaboration of thematic maps and geospatial analysis statistics. The annual averages of effective doses and collective effective doses were estimated from the rate of doses absorbed in air collected by the system and the resident population in the census tracts. The second stage begun from the data collection at the Registry of Goiania's Population Based Cancer (RCBPGO), in which were identified addresses of women diagnosed with breast cancer between 2001 and 2010. Part of the data was geographically referenced and using census data were estimated and compared the annual averages of crude rates of incidence. The spatial correlation of groups (clusters) of new cases has been verified, through the Moran index, and from geographically referenced radiometric measurements obtained in the previous step, the correlation between the incidence of breast cancer and ionizing radiation levels was assessed by unconditional linear regression. The results were presented in two papers. In the first, radiometric surveys were conducted in 1.405 of the 1.636 (85,9%) census tracts sectors that make up the seven Sanitary Districts in the city of Goiania. In total 197.811 geographically referenced measures of the absorbed dose rate in the air were made, with a average of 29,85 ± 7,47 and amplitude from 9,17 to 629,88 nGy/h. From these values were estimated the average of annual effective dose and collective effective dose for outdoor environments, with values of 0,036 ± 0,003 mSv/year and 28,51 ± 11,68 man.mSv/year, respectively. The levels of exposure to external gamma radiation, found in the city of Goiania 28 years after the radiological accident with Cesium-137, are compatible with the values estimated by UNSCEAR (United Nations Scientific Committee on the Effects of Atomic Radiation). And the value of the annual average of effective dose in Goiania, is lower than in other places in Brazil, which have only 'background' of natural radiation outdoors. The results obtained in this study indicate that the dosimetric situation in Goiania does not present undue risk to people and the environment. In the second article, were identified 4.105 new cases of breast cancer, 2.233 in the study area and 1.286 (57,59%) of these geographically referenced. The annual average values of crude rates of incidence, considering the total numbers of cases and geographically referenced presented in the study area are, respectively, 102,91 and 71,86 new cases per 100.000 women. The crude rate of incidence in Goiania was 66,59 cases per 100.000, while in the study area was 102,91 cases per 100.000 and, outside the area, 46,86 ca ses per 100.000. These value s are within the range of average values presented by other Brazilian capitals, which is 130,99 cases per 100.000 in Porto Alegre-RS, and 20,04 cases in Macapa/AP, and the national average in the capital of 79,37 cases per 100.000 women. The cluster analysis showed a slight spatial correlation of crude rates of breast cancer incidence in three small sets of census tracts, far from the accident sources of contamination with Cesium-137. The scatter plot points and the R{sup 2} value did not indicate any association between the crude rates of incidence and radiometric measurements. This study supports the hypothesis that ionizing radiation levels to which women living in Goiania are exposed, are not associated with the emergence of new cases of breast cancer. (author)

  17. Calculation of the uncertainty of H{sub P} (10) evaluation for a thermoluminescent dosimetry system; Calculo da incerteza da avaliacao do H{sub P} (10) para um sistema de dosimetria termoluminescente

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, M.S.; Silva, E.R.; Mauricio, C.L.P., E-mail: max.das.ferreira@gmail.com [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2016-07-01

    Full interpretation of dose assessment only can be performed when the uncertainty of the measurement is known. The aim of this study is to calculate the uncertainty of the TL dosimetry system of the LDF/IRD for evaluation of H{sub P} (10) for photons. It has been done by experimental measurements, extraction of information from documents and calculation of uncertainties based on ISO GUM. Energy and angular dependence is the most important source to the combined u{sub c}(y) and expanded (U) uncertainty. For 10 mSv, it was obtained u{sub c}(y) = 1,99 mSv and U = 3,98 mSv for 95% of coverage interval. (author)

  18. 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)

  19. Evaluation of Diesel cycle motor operating with palm oil for electric energy supplying in rural communities; Avaliacao de um motor do ciclo diesel operando com oleo de dende para suprimento energetico em comunidades rurais

    Energy Technology Data Exchange (ETDEWEB)

    Torres, Ednildo Andrade [Bahia Univ., Salvador, BA (Brazil). Escola Politecnica. Lab. de Energia]. E-mail: ednildo@ufba.br

    2000-07-01

    This article analyses the implantation of the culture of the palm, Elaeis Guineensis, in Brazil, with particularity for the State of the Bahia, showing the current period of training of the technology of beneficially, the diverse types of existing industries, and an evaluation technique of an engine of internal combustion, from diesel's cycle, operating with oil of palm in the form in nature as fuel. It also analyzes the behavior of the developed power and the specific consumption for the engine operating with 50, 75 and 100% of the ate load in function of the rotation. (author)

  20. Magnetic resonance imaging in the evaluation of standard radiotherapy field borders in patients with uterine cervix cancer;Ressonancia magnetica para avaliacao dos limites dos campos classicos de radioterapia em pacientes portadoras de neoplasia maligna de colo uterino

    Energy Technology Data Exchange (ETDEWEB)

    Freire, Geison Moreira; Dias, Rodrigo Souza; Giordani, Adelmo Jose; Segreto, Helena Regina Comodo; Segreto, Roberto Araujo, E-mail: segreto.dmed@epm.b [Universidade Federal de Sao Paulo (UNIFESP-EPM), SP (Brazil). Unit of Radioterapy; Ribalta, Julisa Chamorro Lascasas [Universidade Federal de Sao Paulo (UNIFESP-EPM), SP (Brazil). Dept. de Gynecology

    2010-05-15

    Objective: to evaluate, by means of magnetic resonance imaging, the standardized field borders in radiotherapy for malignant neoplasm of uterine cervix, and to determine the role of this method in the reduction of possible planning errors related to the conventional technique. Materials and methods: magnetic resonance imaging studies for planning of treatment of 51 patients with uterine cervix cancer were retrospectively analyzed. The parameters assessed were the anterior and posterior field borders on sagittal section. Results: The anterior field border was inappropriate in 20 (39.2%) patients and geographic miss was observed in 37.3% of cases in the posterior border. The inappropriateness of both field borders did not correlate with clinical parameters such as patients' age, tumor staging, histological type and degree. Conclusion: the evaluation of standardized field borders with the use of magnetic resonance imaging has demonstrated high indices of inappropriateness of the lateral field borders, as well as the relevant role of magnetic resonance imaging in the radiotherapy planning for patients with uterine cervix cancer with a view to reduce the occurrence of geographic miss of the target volume. (author)

  1. Evaluation of a new pencil-type ionization chamber for dosimetry in computerized tomography beams; Avaliacao de uma nova camara de ionizacao tipo lapis para dosimetria em feixes de tomografia computadorizada

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-07-01

    For performing dosimetry in computed tomography beams (CT), use is made of a pencil-type ionization chamber, since this has a uniform response to this type of beam. The common commercial chambers in Brazil have a sensitive volume length of 10 cm. Several studies of prototypes of this type of ionization chamber have been conducted, using different materials and geometric configurations, in the Calibration Laboratory Instruments of the Institute of Nuclear and Energy Research (LCI) and these showed results within internationally acceptable limits. These ion chambers of 10 cm are widely used nowadays, however studies have revealed that they have underestimated the dose values. In order to solve this problem, we developed a chamber with sensitive volume length of 30 cm. As these are not yet very common and no study has yet been performed on LCI conditions on their behavior, is important that the characteristics of these dosemeters are known, and the influence of its various components. For your review, we will use the Monte Carlo code Penelope, freely distributed by the IAEA. This method has revealed results consistent with other codes. The results for this new prototype can be used in dosimetry of the CT of the hospitals and calibration laboratories as the LCI.

  2. Evaluation of aptamers labelled with {sup 99m}Tc for identification of Staphylococcus aureus bacteria; Avaliacao de aptameros marcados com {sup 99m}Tc para identificacao de focos infecciosos de Staphylococcus aureus

    Energy Technology Data Exchange (ETDEWEB)

    dos Santos, Sara Roberta

    2014-06-01

    Staphylococcus aureus is specie of great medical importance because it is often associated with many infections in humans. This bacterium can cause diseases ranging from simple infections to life-threatening infections such as endocarditis, pneumonia, meningitis, toxic shock syndrome, septicemia, osteomyelitis, among others. S. aureus is the most commonly agent found in infections of the skin and soft tissues, bone infections and bone prostheses. The difficulty in early detection of specific foci caused by bacteria has raised the need to search for new techniques for this purpose. Diagnosis by scintigraphy has advantages over other methods because it is able to identify damage tissues without the need of invasive procedures and is able to perform an early diagnosis even before anatomic changes. Thus, nuclear medicine could contribute to an accurate diagnosis of bacterial infections, since specific radiopharmaceuticals were developed. Aptamers are oligonucleotides that have high affinity and specificity for their molecular targets and are emerging as a new class of molecules for radiopharmaceuticals development. Radiolabeled aptamers specific to the infectious agents, could give a significant contribution to the infection diagnosis by scintigraphy. In this study, aptamers selected to S. aureus were labeled with {sup 99m}Tc and used for the bacteria identification in vitro and in vivo. The aptamers labeled with {sup 32}P and incubated in vitro with S. aureus cells showed high affinity for the bacterial cells when compared with the library of oligonucleotides with random sequences used as control. The aptamers labeled with {sup 99m}Tc also showed affinity for S. aureus cells when compared with the library, but unspecific binding was also verified. The {sup 99m}Tc labelled aptamers were stable in 0.9% saline, plasma of Swiss mice and in excess of cysteine. The in vivo biodistribution studies using Swiss mice with intramuscular infection in the right thigh showed that the aptamers labeled with {sup 99m}Tc were able to identify the infection foci caused by S. aureus displaying a target/non-target ratio of 4,035 ± 0.46 after 4 h. Mice infected with C. albicans presented a target/non-target ratio of 2.02 ± 0.42 while mice with aseptic inflammation induced by zymosan showed a target/non-target ratio of 1,146 ± 0,226. Scintigraphic images revealed a high uptake of the radiopharmaceutical by the kidneys and fast elimination by the bladder. The images also showed higher uptake in the right thigh (infected) in relation to the left (control) for the S. aureus infected mice. In the control groups (C. albicans e zymosan) was not possible to visualize any difference. The results indicate the radiolabeled aptamers as a promising alternative for the development of radiopharmaceuticals for infection. (author)

  3. Development of a methodology for evaluation of the conservation status of irradiators used in industrial scintigraphy; Desenvolvimento de uma metodologia para a avaliacao do estado de conservacao de irradiadores utilizados em gamagrafia industrial

    Energy Technology Data Exchange (ETDEWEB)

    Candeias, Janaina P.; Estrada, Julio J.S. [Instituto Militar de Engenharia (IME), Rio de Janeiro, RJ (Brazil); Ramalho, Adriana T.; Pinho, A. Soares de [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2005-07-01

    In this work a specific methodology for the evaluation of the conservation status of the internal channel of {sup 192}Ir radiators used in industrial scintigraphy in the country, using an industrial videoscope was developed. Wear and damage to the material of the inner channel of the radiators, such as corrosion, erosion or other, can cause obstruction in the channel. Such blockages can result in the source releasing of the remote control, creating accidental overexposure for the team. Therefore, early detection of obstructions in the inner channel of the radiators can prevent occupational accidents. The videoscope is a device that allows the visualization of the conservation status of the inner channel of the radiators. After videoscopic analyses, it was observed that some {sup 192}Ir radiators presented wear on the inner channel. Also, we analyzed the equipment of {sup 75}Se, because they are more modern and new. Internal channels of selenium radiators are in good condition.

  4. Evaluation of performance of AISI 444 steel for application in distillation towers; Avaliacao do desempenho do aco AISI 444 para aplicacao como 'lining' em torres de destilacao

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, R.F.; Miranda, H.C. de; Farias, J.P. [Universidade Federal do Ceara (DEMM/UFC), Fortaleza, CE (Brazil). Dept. de Engenharia Metalurgica e de Materiais. Lab. de Caracterizacao de Materiais], e-mail: rf.guimaraes@yahoo.com.br

    2008-07-01

    In this work, the behavior of the AISI 444 ferritic stainless steel submitted to thermal fatigue test and their corrosion resistance in heavy crude oil was evaluated. The AWS E309MoL-16 and E316L-17 weld metal was employed as filler metal. Plates of the AISI 444 were welded on ASTM A-516 Gr. 60 plates and submitted to fatigue thermal cycle. Samples were extracted from plates welded and heat treated immersed in heavy crude oil at 300 deg C. Optical microscopy (OM), scanning electron microscopy (SEM) and energy dispersive of X-ray analysis (EDX) were used to characterize the microstructure and the corroded surface. The results show that the AISI 444 stainless steels did not present cracks after the thermal fatigue cycle and the heat treated immerse in heavy crude oil. The electrode AWS E309MoL-16 show better corrosion resistance than the AWS E316L-17. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2006-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1999-11-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1997-10-01

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

  8. Evaluation of irradiated essential oils to control of Sitophilus zeamais Mots. (Coleoptera: Curculionidae) and Blatella germanica (L.) (Dictyopera: Blattellidae); Avaliacao de produtos naturais irradiados para o controle de Sitophilus zeamais Mots. (Coleoptera: Curculionidae) e Blatella germanica (L.) (Dictyopera: Blattellidae)

    Energy Technology Data Exchange (ETDEWEB)

    Potenza, Marcos Roberto

    2004-07-01

    This work aimed to evaluate the effect of irradiated essential oils of Eucalyptus citriodora, Eucalyptus globulus, Pinus sp., Azadirachta indica, Cymbopogon nardus, Cupressus sempervirens, Cymbopogons citratus and Juniperus communis and aqueous, hexanic and ethanolic irradiated extracts of Solanum paniculatum, Dahlia pinnata, Lycopersicon esculentum, Nephrolepis pectinata, Ruta graveolens, Ficus elastica, Lavandula angustifolia, Rhododendron simsii, Agave angustifolia, Ocimum basilicum, Allamanda cathartica, Dieffenbachia brasiliensis, Pennisetum purpureum, Annona squamosa, Coffea arabica and Hibiscus rosa-sinensis, in order to identify new substances to integrated pest management (IPM) and to observe possible effects of gamma radiation about extracts and essential oils efficiency such as increase, reduction, activation and inactivation of the same to the pest control. It evaluated the effect of contact on Sitophilus zeamais and by ingestion in Blattella germanica. To irradiation was used an experimental irradiator of Cobalt-60, type Gammacell 220. The essential oils were submitted increasing doses of gamma radiation: 2.5; 5.0; 7.5 and 10.0 kGy. The bioassay with B. germanica demonstrated efficiency between 22.0 e 30.0% and between 30.0 and 42.0%, respectively, to irradiated essential oils of E. citriodora and E. globulus and they demonstrated too repellency to the nymphs. The gamma radiation used promoted changes in essential oils of E. citriodora e E. globulus that they began to show efficiency on B. germanica nymphs besides a significant reduction of repellency. Essential oils of Pinus sp., A. indica, C. sempervirens and J. communis did not display efficiency. The essential oils of C. nardus, and C. citratus had low efficiency. The gamma radiation increased the efficiency of ethanolic extract of D. Pinnata with dose of 7.5 kGy, showing 48.0% of efficiency on B. germanica nymphs. The gamma radiation showed adverse effect on the aqueous extract of R. Graveolens, decreasing its efficiency of 20.0% to 2.0% in doses of 2.5; 7.5 and 10.0 kGy and 4,0% In dose of 5.0 kGy. The bioassay with S. zeamais demonstrated that irradiated essential oils of E. citriodora, E. globulus e Pinus sp. with dose of 5.0 kGy presented 100.0; 92.0 and 100.0% of efficiency, respectively. The essential oil of A. indica in different doses of gamma radiation didn't display efficiency on S. zeamais adults. It was not found out gamma radiation effects on efficiency from essential oils of C. nardus, C. sempervirens, C. citratus and J. communis, besides the oil of C. nardus in doses of gamma radiation applied was highly efficient over than 90.0%. The gamma radiation increased the efficiency of ethanolic extract of L. esculentum getting 70.0% of efficiency with dose of 5.0 kGy on S. zeamais adults. The gamma radiation showed adverse effect on the aqueous extract of R. Graveolens, decreasing its efficiency of 20.0% to 12.0; 6.0 and 2.0% in doses of 5.0; 7.5 and 10.0 kGy, respectively. According to results we verified that the gamma radiation interfered on behavior of some essential oils to pest control and it can obtain increase, reduction, activation and inactivation from the same. (author)

  9. Evaluation of sensitivity evaluation of a contamination monitor for use in monitoring of internal exposure of workers in nuclear medicine; Avaliacao da sensibilidade de um monitor de contaminacao para aplicacao em monitoracao da exposicao interna de trabalhadores em medicina nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Dantas, Bernando Maranhao; Assis, Janima Cruz de; Oliveira, Salomao Marques de; Dantas, Ana Leticia Almeida, E-mail: bmdantas@ird.gov.br [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil). Lab. de Monitoracao In Vivo. Div. de Dosimetria

    2014-07-01

    In practice of nuclear medicine, expert personnel routinely handle radiopharmaceuticals for diagnosis and radiotherapy. The control of intakes of radionuclides by workers can be performed through internal dosimetry techniques, as an integral part of the radiation protection program of the installation. The use of radiopharmaceuticals for diagnostic and therapeutic purposes in vivo and in vitro in Brazil is regulated by CNEN-NE Standards and 3:05 CNEN-NN 3.01. The International Atomic Energy Agency (IAEA) recommends the establishment of an internal monitoring program on workers, especially those subject to possible exposure to annual effective doses greater than 1 mSv. Note that, currently, in Brazil, are not available qualified laboratories to provide internal monitoring services in all regions in the country, if it were applied by CNEN, the requirement for internal monitoring of workers. This paper presents the development of a simple and low-cost methodology for in vivo monitoring of {sup 131}I in the thyroid. The proposed methodology is the use of portable monitor of surface contamination, equipment available and routinely used in all nuclear medicine services in Brazil. The monitor is calibrated with neck-thyroid simulator developed at the Laboratory of In Vivo Monitoring of IRD/CNEN-RJ. The equipment tested is suitable for application in in vivo occupational monitoring thyroid. This conclusion is based on the fact that the detection system has sufficient sensitivity for monitoring up to seven days after the incorporation of the radionuclide and guarantees {sup 131}I detection in values that result in effective doses below 1 mSv for the exposure scenarios adopted.

  10. Evaluation of the attenuation of the lead aprons with different lead equivalences for use in radiology services; Avaliacao da atenuacao de aventais plumbiferos com diferentes equivalencias de chumbo para uso em servicos de radiologia

    Energy Technology Data Exchange (ETDEWEB)

    Pimentel, Juliana, E-mail: juliana.pimentel@pucrs.br [Hospital Sao Lucas (HSL/PUCRS), Porto Alegre, RS (Brazil); Borgonhi, William Mello, E-mail: borgonhi@gmail.com [Instituto Pro Universidade Canoense (IPUC), Canoas, RS (Brazil); Vanni, Stefania, E-mail: stevannni87@gmail.com [Assessoria em Fisica Medica (AFIM), Porto Alegre, RS (Brazil)

    2014-07-01

    This work has the aim to evaluate the attenuation of personal protective gear of lead rubber with equivalence of 0.25 and 0.50 mmPb, the scattered radiation. It was used as a radiation emitter, a x-ray equipment brand GE® Model XR6000 with maximum voltage of 150 kVp, the maximum electric current of 630 mA. How spreader object was used a cylindrical acrylic simulator with measures 32 cm by 15 cm. To collect the measurements was used the ionizing chambers Fluke Biomedical® Victoreen® model 451B-DE-SI. The individual protective clothing evaluated were two rubber aprons with equivalence of 0.25 and 0.50 mmPb. To perform the experiment the simulator equipment was placed on the table aligned with the primary beam with focus-film distance of one meter. Were used as exposure parameters 85 kVp, 80 mA and 2.5 sec. Recordings were carried out at distances from 50 to 250 cm, ranging from 25 to 25 cm. For each distance were made four measures in the air and four measures with each VPI in front of the meter, checking the equivalent dose rate and tabling the values obtained. For aprons with equivalence 0,25mmPb average attenuation obtained was 94.05%, with standard deviation of 1.36. As for the aprons with 0,50mmPb the affected attenuation was 97.6%, with deviation of 0.75. From the results of this assessment, it is evident the importance of radiological protective clothing in the routines of individuals occupationally exposed to X-ray.

  11. 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)

  12. Environmental evaluation of route alternative system - technological approach of environmental viability project study; Sistema de avaliacao ambiental de alternativas de percursos - uma abordagem tecnologica para estudos de viabilidade ambiental de projetos

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Wilson Jose de; Porciano, Patricia Pereira [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil); Alvarez, Beatriz Silva Villa; Casanova, Marco Antonio; Carvalho, Marcelo Tilio Monteiro de; Montenegro, Anselmo Antunes; Carvalho, Paulo Cezar Pinto [Pontificia Univ. Catolica do Rio de Janeiro, RJ (Brazil). Dept. de Informatica. Grupo de Tecnologia em Computacao Grafica (TECGRAF)

    2003-07-01

    SAAAP - Routing Alternatives Environmental Evaluation System - was designed to select the best alternative pipeline route. The system takes into account economic, environmental and engineering factors, according to an optimality criterion that combines several variables, such as vegetation coverage, soil type and declivity. The system is operational and has been tested in several realistic projects. (author)

  13. Assessing the safety aspects for use of multilayer pipes in gas distribution of domestic installation; Avaliacao dos aspectos de seguranca para utilizacao de tubos multicamada em instalacoes de distribuicao de gas em residencias

    Energy Technology Data Exchange (ETDEWEB)

    Bratfisch, Carlos do Amaral Coutinho [Bratfisch - Engenharia em Gas, Sao Paulo, SP (Brazil); Emmeti, Sao Paulo, SP (Brazil); Collela, Ricardo [FGS Brasil Industria e Comercio Ltda., Cotia, SP (Brazil)

    2012-07-01

    The gas distribution networks average flow at the Brazilian market is low and the operating pressure is less than 2.0 kgf/cm{sup 2}. These values are lower if compared to other countries and due this, gas distribution companies, major builders and developers have started a movement to find alternatives to reduce their installation costs, and they have identified in other countries the multilayer system. Because of the great interest of the consumer market for this alternative, and since there is no standards in Brazil that could regulate it, a technical committee was established under the ABNT in order to prepare a standard draft meeting the local market particularities as well this technology requirements. Then it was initiated a quest looking for the knowledge of the 'state of the art' of this technology in various locations around the world, especially Europe, Asia and Oceania, which shows that, with few exceptions, the knowledge of this alternative is still on the beginning, and even in countries where this system is a pioneer some doubts exist with respect to their usage limit. The multilayer system materials were already used at hot and cold water networks for more than twelve years, but only after that it was made an adaptation for building installations of gas distribution networks. Due the need to search and establish safety criteria both with respect to the product as its installation shape, did the necessary motivation to perform a more detailed study of this new technology, meeting the needs of this market. The intention is to present to the consumer market a series of comparative data definitions and techniques to identify this as a modern, updated, economic, efficient and safe alternative option for gas distribution networks. (author)

  14. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-07-01

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

  16. Development methodologies for the assessment of impacts of small scale hydroelectric power plant projects on migratory fish; Desenvolvimento metodologico para avaliacao de impactos de empreendimentos hidreletricos de pequeno porte sobre peixes migradores

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Lucas Goncalves da; Barradas, Jose Ricardo de Souza [Pontificia Universidade Catolica do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Dept. de Biodiversidade e Ecologia], E-mail: lucas.silva@pucrs.br

    2009-10-15

    Dams influence directly the process of fish migration. Assessing the impact of these infrastructure and direct research for that purpose minimize environmental impacts resulting from projects on biodiversity. Through computer models and probability logistic regressions of occurrence that take into account geomorphologic parameters (elevation and basin area) was obtained a standard distribution model of migratory fishes species in the upper Uruguay river basin (RS/SC) with high calibration (84.39% of adherence). The computational modelling significantly increases the knowledge about methodologies for evaluate environmental impacts caused by small and large dams and applicability in other basins. (author)

  17. 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)

  18. Disinfection of effluent of wastewater treated using solar energy (SODIS): evaluation of a solar concentrator device; Desinfeccao de efluentes com tratamento terciario utilizando energia solar (SODIS): avaliacao do uso do dispositivo para concentracao dos raios solares

    Energy Technology Data Exchange (ETDEWEB)

    Paterniani, Jose Euclides Stipp; Silva, Marcelo Jacomini Moreira da [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Mecanica. Saneamento e Ambiente]. E-mail: pater@agr.unicamp.br

    2005-01-15

    Besides being an available natural resource, the solar energy is very applicable in places with few recourses and low money resources, because there aren't either the need of chemical products neither a huge cost (commercial materials can be reused). To make this job we re-used PET bottles half painted black with the variables: 1, 2, 4 and 6 hours of heat exposition and we also used a concentrator of rays of sunshine. The affluent control parameters were turbidity, apparent color, temperature, total coliforms and E. coli. These last three were evaluated before and after the disinfection process (effluent parameters). To assess the bacteria reactivation we kept the water in bottles for 24 hours, pretending a very common situation in Brazilian rural houses. We conclude that the use of the concentrator of rays of sunshine can reduce the heat exposition from 6 to 4 hours, without harm the SODIS efficiency. Using the concentrator of rays of sunshine for 6 hours we can obtain, besides SODIS, the process of solar pasteurization (SOPAS), which stops the re-growth of bacteria with a 70 deg C water temperature. We also observed that when the sky is cloudy the incidence of solar radiation and, therefore, the SODIS efficiency decrease, even if the water temperature is higher during the disinfection. Although, this factor doesn't mean a significant influence statistically. (author)

  19. Radioisotope and mathematical modeling in the assessment of supplementation of Phytase in diets for growing pigs; Radioisotopo e modelagem matematica na avaliacao da suplementacao de fitase em dietas para suinos em crescimento

    Energy Technology Data Exchange (ETDEWEB)

    Mota, L.C.; Moreira, J.A.; Oliveira, R.L.R., E-mail: japmoreira@bol.com.br [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil); Vitti, D.M.S.S. [Centro de Energia Nuclear na Agricultura (CENA/USP), Piracicaba, SP (Brazil); Patino, R.M. [Universidade de Sucre, Bogota (Colombia)

    2014-02-15

    The purpose of this study was to evaluate the effects of including increasing levels of phytase enzyme in pig diets for growing pigs, using the mathematical model. Data from 20 crossbred male piglets, castrated and weighing 26.80 kg on average was used. The animals were housed in individual metabolic cages to collect feces and urine in a 17 day period. A randomized block experimental design containing five treatments and four repetitions was used. The experimental diet provided to piglets contained corn and soybean and was supplemented with five increasing levels of phytase enzyme (0, 250, 500, 750 and 1000 UF/kg), corresponding to 0.00 %, 0.01 %, 0.02 %, 0.03 % and 0.04 % respectively. The variables evaluated were: intake, excretion, output flow of P in the digestive tract, bloodstream, bones and soft tissues. The phytase enzyme did not affect the P intake (P>0.05 (F{sub 10}), the P excreted in urine (F{sub 02}) and the output flow of P in the bones (F{sub 32} e F{sub 23}) and soft tissue (F{sub 42} e F{sub 24}), however, there was a reduction in P excreted in feces (F{sub 01}) of 8.92 %, 26.76 %, 22.53 % and 28.64 % to the levels 0, 250, 500, 750 e 1000UF/kg, respectively and showed a positive linear effect (P<0.08) for the endogenous P (F{sub 12}). Corn and soybean meal based diets can be used with 50% of P by dicalcium phosphate, adding 250UF/kg diet for growing pigs, and may cause a reduction of 27 % of P excretion in feces. (author)

  20. A proposal of cost evaluation of own capital for the Brazilian electric sector; Uma proposta de avaliacao do custo do capital proprio para o setor de energia eletrica brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Serrano, Ricardo Oliveira L.

    2003-12-01

    This work studies the own capital cost of the Brazilian electric sector, by using three methodologies: Comparable Accounting Results (CAR), using historical values for measurement, Discounted Cash Flow (DCF) and the CAPM, elaborated from expected values.The obtained results by using the CAR method indicated that the Brazilian electric power sector is not receiving remuneration according to the real maintenance and expansion necessities. Based on this observation, it was considered appropriated to discard the CAR method in the proposed methodology, therefore using the simply average of the CAPM e DCF models. By using the simply average of the models presents the advantage of capturing specific characteristics of each model, and to dilute effects of eventual extreme values.

  1. A proposal for evaluation of the owner capital cost for the Brazilian electric power sector; Uma proposta de avaliacao do custo do capital proprio para o setor de energia eletrica brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Serrano, Ricardo Oliveira L.

    2003-12-01

    This work studies the owner capital cost of the brazilian electric sector, according to three methods: Comparable Accounting Earnings, that uses historical values in its measuring and Discounted Cash Flow (DCF) and the Capital Asset Pricing Model (CAPM), elaborated from the expected values. The obtained results by using the CAE method showed that the Brazilian electric sector has not been rewarded in its real necessity of maintenance and expansion. From this observation, it was considered appropriated not to take this method in the methodology presently proposed, which will be using only the single average of the CAPM and DCF models. The use of the results single average of this model presents the advantage of selecting specific characteristics of each one, and diluting the effects of occasional peak values. The owner capital cost obtained from this work was the average value of 19.73% for the studied period - 1995/2003 (17.12% for 2003), proximate to the obtained result by ANEEL - brazilian agency of electric power - for investments in energy distribution in Brazil, 17.47%, while Minardi and Sanvicente (2003) obtained 36.06% for the owner capital cost of CEMIG in 2002, specifically.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

  3. Verification of the patient positioning for evaluation of PTV margins in radiotherapy of prostate cancer; Verificacao do posicionamento do paciente para a avaliacao das margens de PTV em radioterapia do cancer de prostata

    Energy Technology Data Exchange (ETDEWEB)

    Frohlich, B.F.; Peron, T.M.; Scheid, A.M.; Cardoso, F.; Alves, F.; Alves, M.S.; Dias, T.M. [Hospital de Clinicas de Porto Alegre, RS (Brazil)

    2016-07-01

    The work aimed to verify the relative displacements between the patient and the isocenters of the device based on the reproducibility of positioning, and estimates a PTV margins of radiotherapy treatments for prostate cancer. The results of displacements were obtained from a sample of 30 patient and showed values in vertical, longitudinal and lateral directions -0.03 ± 0.48 cm, 0.12 ± 0.47 cm and 0.02 ± 0.53 cm, respectively. PTV margins were calculated resulting in 0.97 cm for vertical direction, 0.85 cm for longitudinal, and 0.98 cm for lateral. (author)

  4. Automatic alignment device for focal spot measurements in the center of the field for mammography; Sistema automatico de alinhamento para avaliacao do ponto focal no centro do campo de equipamentos mamograficos

    Energy Technology Data Exchange (ETDEWEB)

    Vieira, Marcelo A.C.; Watanabe, Alex O.; Oliveira Junior, Paulo D.; Schiabel, Homero [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Escola de Engenharia. Dept. de Engenharia Eletrica], e-mail: mvieira@sc.usp.br

    2010-03-15

    Some quality control procedures used for mammography, such as focal spot evaluation, requires previous alignment of the measurement equipment with the X-ray central beam. However, alignment procedures are, in general, the most difficult task and the one that needs more time to be performed. Moreover, the operator sometimes is exposed to radiation during this procedure. This work presents an automatic alignment system for mammographic equipment that allows locating the central ray of the radiation beam and, immediately, aligns with it by dislocating itself automatically along the field. The system consists on a bidirectional moving device, connected to a CCD sensor for digital radiographic image acquisition. A computational analysis of a radiographic image, acquired at any position on the field, is performed in order to determine its positioning under the X-ray beam. Finally, a mechanical system for two moving directions, electronically controlled by a microcontroller under USB communication, makes the system to align automatically with the radiation beam central ray. The alignment process is fully automatic, fast and accurate, with no operator exposure to radiation, which allows a considerable time saving for quality control procedures achievement for mammography. (author)

  5. Evaluation of wind power for electric power generation at Nossa Senhora da Gloria - Sergipe - Brazil; Avaliacao do potencial eolico para geracao de energia em Nossa Senhora da Gloria-SE, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Sobral, F.S.B.; Faccioli, G.G. [Nucleo de Estudos do Semi-Arido - NESA, Universidade Federal de Sergipe (UFS), Sao Cristovao SE (Brazil)

    2009-06-15

    The production of alternative energy can provide economic development and employment opportunities, especially in Rural areas. The work seeks as main objective the evaluation of the wind potential for generation of energy in Nossa Senhora da Gloria-SE. The values of the meteorological variables were obtained in stations automatic meteorological located in the municipal district. The statistical treatment for determination of the behavior of the winds in the researched municipal district was beacon in the calculation of averages, variances, distribution of frequencies and of the function of distribution of probability Rayleigh, case peculiar of the distribution Weibull, thoroughly diffused in studies of potential aeolian. These analyses allowed to extract all the information starting from the obtained gross data of the station and they were simulate in the software Statistica 7.0. The period of the day in that were registered to largest medium speeds it is the period of the afternoon understood between 12h00min and 18h00min for the municipal district of Nossa Senhora da Gloria-SE, being this period chosen for the simulations in software. (author)

  6. 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)

  7. Preparation and evaluation of 'verde-lodo' organo clays for using in the removal of petroleum derivatives; Preparo e avaliacao de argilas verde-lodo organofilicas para uso na remocao de derivados de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Bertagnolli, C.; Kleinuebing, S.J. [Laboratorio de Engenharia Ambiental, Faculdade de Engenharia Quimica, Universidade Estadual de Campinas, SP (Brazil)], e-mail: meuris@feq.unicamp.br; Silva, M.G.C. [Faculdade de Engenharia Quimica, Universidade Estadual de Campinas, SP (Brazil)

    2009-07-15

    Clays organically modified with quaternary ammonium salt, whose features enable the interaction with organic compounds, have great potential use for environmental remediation. Organophilic clay 'Verde-Lodo' smectite from the State of Paraiba (Brazil) were organofilized by intercalation of two different quaternary ammonium salts. The surfactant used were cetyl-pyridinium chloride and benzalkonium chloride. The obtained material had been characterized by use of X-ray diffraction, infrared spectroscopy and scanning electron microscopy. The clay likeness for petroleum derived: gasoline, kerosene oil and diesel oil were defined by adsorption and swelling tests. The results confirm the effectiveness of the synthesis of organo clays through the increase of the basal spacing and the presence of absorption bands due to the groups CH{sub 2} and CH{sub 3} for modified clays. The potential for removal of petroleum derived of wastewaters was verified by adsorption of these compounds. (author)

  8. 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)

  9. 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)

  10. Evaluation of polymers of different degrees viscosities as additives for drilling fluids for oil well; Avaliacao de polimeros de diferentes graus de viscosidades como aditivos para fluidos de perfuracao de pocos de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Farias, K.V.; Amorim, L.V.; Silva, A.V. [Universidade Federal de Campina Grande (DEMa/UFCG), PB (Brazil); Lira, H.L. [Universidade Federal de Campina Grande (CCT/UFCG), PB (Brazil). Centro de Ciencias e Tecnologia. Unidade Academica de Engenharia de Materiais], e-mail: kassiefarias@gmail.com

    2008-07-01

    The objective of this work is to study the polymers influence of different degrees of viscosity, used as viscositying and filtered reducer additives, in the rheological, filtration and lubricity properties of drilling fluids for oil wells. Were determined the rheological behavior, the apparent and plastic viscosities, the yield limit and gel force, the filtered volume and the lubricity coefficient in accordance with API standard. The fluids showed pseudoplastic behavior with properties close to the standard fluid; the increase of viscositying and filtered reducer concentrations lead to the increase of rheological properties and the filtered reducer values, from the concentration of 3,5g/350mL of water it acted as viscositying, increasing the values of apparent and plastic viscosities, yield limit and gel force, being 3,0g/350mL of water the adequate concentration of this additive, promoting better results of rheological and filtration properties. (author)

  11. Assessment of recycled PET properties for application on oil wells as sand control agents; Avaliacao de propriedades de PET reciclado para aplicacao em pocos de petroleo como agente de contencao de areia

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Alexandre Zacarias Ignacio [PETROBRAS, Rio de Janeiro, RJ (Brazil); Delpech, Marcia Cerqueira [Universidade do Estado do Rio de Janeiro (IQ/UERJ), RJ (Brazil). Inst. de Quimica], e-mail: mcd@uerj.br

    2008-07-01

    The Sand Control is fundamental for oil production in unconsolidated sandstone formations. It consists of the installation of a filter made of stainless steel screens and grained materials (sand control agents) which are, normally, high density inorganic substances (sand, ceramic, bauxite). Shallow formations, near to the sea bed, are more sensitive and need different kinds of sand control agents with low density. The objective of this work was the evaluation of recycled poly(ethylene terephthalate), PET, as sand control agent for oil wells. Pack permeability and thermal stability tests results, after up to six months of exposure to sea water and crude oil, have indicated that the recycled PET kept the necessary characteristics for the proposed application. Also, it was observed that the PET grain pack did not presented significant property modifications in the exposure conditions, when compared to the non-exposed samples. (author)

  12. Evaluation of demand for water and electricity for papaya micro sprinkler irrigation system in Paraiba state, Brazil; Avaliacao das demandas de agua e energia eletrica para mamao irrigado por microaspersao no estado da Paraiba

    Energy Technology Data Exchange (ETDEWEB)

    Lopes, Riuzuani Michelle Bezerra Pedrosa; Dantas Neto, Jose; Farias, Soahd Arruda Rached Farias; Azevedo, Carlos Alberto Vieira de [Universidade Federal de Campina Grande (UAEAG/UFCG), PB (Brazil). Centro de Tecnologia e Recursos Naturais. Unidade Academica de Engenharia Agricola], Emails: riuzuani@yahoo.com.br, zedantas@deag.ufcg.edu.br, soahd_rached@hotmail.com, cazevedo@deag.ufcg.edu.br

    2010-07-01

    This study aimed to conduct an assessment on the demands for water and electricity for fruit irrigated by micro sprinkler irrigation in agricultural planning. We obtained the demands of gross water and electricity for papaya in 15 municipalities spread over the Rio Paraiba-PB, which was used by micro irrigation system with 90% application efficiency. The city of Joao Pessoa is the place to lower water consumption, requiring 32.9% of the amount required for papaya in Exile, which had the highest annual and daily evapotranspiration, combined with the lowest annual rainfall likely at a 75 % probability. The municipalities were chosen because they had a greater variance in terms of climate, in order to examine various irrigation demands. In Exile is a necessary volume of water-to 8.006,9 m{sup 3}.ha{sup -1}.year{sup -1} to produce one hectare of papaya while in Joao Pessoa need to 2.712,89 m{sup 3}.ha-1.year{sup -1}. The consumption of electricity in the city of Desterro is higher among the cities studied, necessitating 2.009,0 kW.ha{sup -1}.ano{sup -1} to produce one hectare of papaya, while in Joao Pessoa we only need 876,54 kW.ha {sup -1}.ano{sup -1} (author)

  13. Evaluation of the environmental licensing process for small hydroelectric power plants in Minas Gerais state, Brazil; Avaliacao do processo de licenciamento ambiental para pequenas centrais hidreletricas no estado de Minas Gerais

    Energy Technology Data Exchange (ETDEWEB)

    Pedreira, Adriana Coli

    2004-07-01

    The present situation of the environmental licensing process have been slow and complicated, in relation to the current conception of the sustainable environmental development in the country. The enterprises and impacting activities are being discussed and analysed through a great number of environmental laws and specific laws to each enterprise. These laws along with the inexperience of the enterprises and of the many institutions involved in the process are an obstacle to the development. This document presents the legal and institutional aspects of the environmental licensing for the implementation of small hydroelectric power plants. Laws and doctrine related to the topic were researched and concluded for Minas Gerais State with the help of a survey with the enterprises and institutions involved in the process to find out the difficulties that influence the delay of the analysis of the SHPP. The results show that the main barriers are the non-application of the CONAMA resolution 279/2001 to the SHPP, undetermined inspection criteria, excess of environmental programs, technical incapacity, lack of financial resources, non-integration of the institutional organs, the building of SHPP in permanent preservation area, project interfering in the fish fauna, studies an environmental impact with then reports and public audiences. Finally, concludes that the difficulties are based on the non-integration of the institutions and also, being recent, on the inexperience of the actors involved. Therefore, the study suggests on increase of the technical body in the institutions and training of their analysts; hiring of specialized consultancy, implantation of an environmental integrated system, social communication program in the planning phase, fulfillment of the CONAMA resolution 279/2001; integration of public ministry representatives in the licensing organs; application of planning and zoning, deadlines and legal imposition of these deadlines in order to supply the energetic demand and guarantee the sustainable development. (author)

  14. Development of a model for strategic evaluation of the global performance of the Brazilian Nuclear Energy Commission; Desenvolvimento de um modelo para avaliacao estrategica do desempenho global da Comissao Nacional de Energia Nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Staude, Fabio

    2003-07-01

    A conscious, effective course of action, now essential to several areas and organizations, has become a must in the public administration. In this sense, modem managerial practices may contribute significantly for governmental organism to take up an attitude shifted to results in the society, without losing its eminently public function. In order to measure the social impact of the activities of the State as a whole, institutions must use mechanisms that allow self-evaluations of their performance, so as to verify the return obtained as a result of their efforts. However, most institutions do not have structured tools for such evaluation. The present study proposes to the Comissao Nacional de Energia Nuclear a model to measure its global performance, offering a proposed architecture for the measurement system in accordance with the results of the planning process of the Institution. The methodology presented also comprises the definition of cause-and-effect critical models between the strategic objectives of the organization and its respective factors critic ai for success, as well as related performance indicators. This work also includes the breakdown of the measurement system for the macro processes of the organization, optimizing resource sharing and the flow of information, avoiding redundant efforts and bringing forth further advantages aiming at creating a organizational 'unit'. Within this context, the developed model may offer substantial help for the improvement of the maturity of the organization in goal-oriented management, considering that the proposed global performance measurement follows a planned structure, with a systemic approach of the organization, allowing that the process be carried out in a way that is transparent and objective. (author)

  15. Delphi technique applied to risk identification and assessment on pipe supports fabrication and erection contracts; Aplicacao da tecnica Delphi para identificacao e avaliacao de riscos na contratacao e montagem de suportes de tubulacao

    Energy Technology Data Exchange (ETDEWEB)

    Cruz, Rodrigo Luiz Neves; Balbi, Diego Junca de Gonzaga [Promon Engenharia, Sao Paulo, SP (Brazil)

    2012-07-01

    Through the years, Risk Management became an accepted subject in Brazilian Organizations, with its own language, techniques and tools; and its processes are being more and more often introduced in its management models. However, risk identification, assessment and management is a difficult task, and can be even more difficult for construction industry-related projects, for these ventures tend to be more dynamic and complex. In this sense, the objective of this paper is to present the application of Delphi technique for risk identification in the erection of piping support. To achieve the desired objective, a literature review of theory references was conducted to understand concepts involved. To apply the technique itself, experts in plant erection were involving. (author)

  16. '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)

  17. Dosimetric evaluation of the Fricke gel dosimeter using the spectrophotometric technique for application in electron and neutron dosimetry; Avaliacao dosimetrica da solucao Fricke gel usando a tecnica de espectrofotometria para aplicacao na dosimentria de eletrons e neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Mangueira, Thyago Fressatti

    2009-07-01

    In this work the main dosimetric characteristics of the Fricke Xylenol Gel (FXG) solution were established for further application in the measurement of dose distribution of clinical electron fields. The dose-response curves of the FXG in a neutron field were also evaluated for the research in Boron Neutron Capture Therapy (BNCT) and industrial electron fields. The standard reading technique was the spectrophotometric. For the clinical field, the intra and inter-batch reproducibility are better than 1.4% and 5.1 %, respectively, the response presents a linear behavior for doses ranging from 0.2 to 40 Gy independently of the energy and the dose rate in the studied ranges. Due to the effects of the FXG natural oxidation, the optimum elapsed time between FXG preparation and irradiation was established as 24h period and the behavior of the dose-response curve of the FXG using the variation in the absorbance relative to the non-irradiated dosimeter as a basis during the whole studied period were not altered. The dose-response to the industrial electron beam presented an exponential decreasing behavior and the neutron beam for research in BNCT presented a linear behavior for the complete studied dose range. According to the obtained results for the different types of radiation studied for the FXG, there was no change in the position of the characteristic bands of the absorption spectrum due to the interaction of these radiation types. Additional tests were performed to determine the digital photographic imaging of FXG analyses viability and the application of FXG dosimetry on intracavitary brachytherapy. The good performance of the FXG dosimeter in the tests that were carried out indicates that this dosimeter may be applied to the tri-dimensional dose evaluation in radiotherapic treatments using electrons and neutron beams. (author)

  18. Dosimetric evaluation of the Fricke gel dosimeter using the spectrophotometric technique for application in electron and neutron dosimetry; Avaliacao dosimetrica da solucao Fricke gel usando a tecnica de espectrofotometria para aplicacao na dosimetria de eletrons e neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Mangueira, Thyago Fressatti [Instituto de Pesquisas Energeticas e Nucleares (GMR/IPEN/CNEN-SP), Sao Paulo, SP (Brazil). Centro de Metrologia das Radiacoes

    2011-07-01

    The main dosimetric characteristics of the Fricke Xylenol Gel (FXG) solution were established for further application in the measurement of dose distribution of clinical electron fields. The dose-response curves of the FXG in a thermal neutron field were also evaluated for application in Boron Neutron Capture Therapy (BNCT) and industrial electron fields. The standard reading technique was the spectrophotometry. For clinical fields the intra and inter-batch reproducibility of FXG solution are better than 1.4% and 5.1%, respectively. The optical response presents a linear behavior for doses ranging from 0.2 to 40 Gy independently of the electron energy and the dose rate in the studied ranges. Due to the effects of the FXG natural oxidation, the optimum elapsed time between FXG preparation and irradiation was established as 24h. The behavior of the dose-response curve does not change the obtained absorbance values relative to the non-irradiated dosimeter response during the studied period. The dose-response curve to industrial electron beam presented an exponential decreasing behavior. The optical response to thermal neutrons beam presented a linear behavior for the studied dose range. According to the obtained results to the different radiation fields studied it was not observed changes in the wavelength of the typical bands of the absorption spectrum radiation induced. Additional tests were performed with FXG solution to verify the viability and application of FXG dosimetry on intracavitary brachytherapy using digital photographic imaging. The excellent performance of the FXG dosimeter indicates that this dosimeter may be applied to tri-dimensional dose evaluation in radiotherapy treatments using electrons and neutron beams. (author)

  19. Evaluation of polymeric materials packed in fixed bed column for oil water remediation; Avaliacao de materiais polimericos empacotados em colunas de leito fixo para a remediacao de aguas oleosas

    Energy Technology Data Exchange (ETDEWEB)

    Queiros, Yure G.C.; Barros, Cintia Chagas; Oliveira, Roberta S.; Marques, Luiz R.S.; Cunha, Luciana; Lucas, Elizabete F. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Macromoleculas Eloisa Mano], e-mail: yuregomes@ima.ufrj.br, e-mail: elucas@ima.ufrj.br

    2007-07-01

    Polymeric resins are being tried as an alternative material for treating oily waters from the petroleum industry, which have already been treated by conventional methods. The objective of this work has been to evaluate the purification degree of synthetic oily waters when treated in fixed bed columns packed with polymeric resins made up of hydrophilic and lipophilic moieties. The analysis used for characterizing the total grease and oil content (TOG) was fluorimetry. Starting oily waters of average TOG 50 ppm were prepared. Data obtained from eluted waters did not outweigh 10% of the TOG values of starting solutions in some blends of resins with a pretty good mechanical stability under the increase of pressure. Organoclay material showed a good retention performance, but has presented a mechanical instability too, compromising its use for larger amounts of wastewater. (author)

  20. Evaluation of IMRT plans for prostate treatment using energies of 6 MV and 15 MV; Avaliacao de planejamentos de IMRT para tratamento de prostata utilizando energias de 6 MV e 15 MV

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, Lucas Francisco C.; Silva, Murilo C. da; Silveira, Paula J.; Flosi, Adriana A.; Boccaletti, Karina W., E-mail: mcollete@gmail.com [A. C. Camargo Cancer Center, Sao Paulo, SP (Brazil). Servico de Radioterapia

    2013-08-15

    This study aims to evaluate and compare radiotherapy plans with intensity-modulated radiation therapy (IMRT) for prostate cancer treatments optimized for photon energies of 6 MV and 15 MV. We retrospectively evaluated 29 patients with prostate cancer, planned with IMRT technique with prescribed dose of 78 Gy. The initial plan was done for the two photon energies, keeping the same optimization parameters and comparing maximum, minimum and modal PTV doses, conformity and homogeneity indexes, dose gradients, isodoses volumes of 30, 40, 50, 60, and 70 Gy, and the total number of monitor units. It was found that the plans are equivalent regarding higher isodose volumes, conformity and homogeneity indexes, maximum, minimum and modal PTV doses. However, for 6 MV plans there was a considerable increase in both number of monitor units and volume lower isodose volumes, especially the 30 Gy. (author)

  1. Methodology for evaluation of the stability of electric systems of offshore oil platforms in interconnected operations; Metodologia para a avaliacao dos sistemas eletricos das plataformas de petroleo offshore em operacao interligada

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Dalmo Junior; Mendes, Pedro Paulo de Carvalho [Universidade Federal de Itajuba (UNIFEI), MG (Brazil)

    2004-07-01

    The electric system of the platforms usually operates in an isolated way, requesting therefore a redundancy in the generating units so that a can have a reliable and uninterrupted system of their loads. A way to improve the quality in operation in terms of safety, reliability and economy can be the connection of the platforms of petroleum that are close, since it is viable. The objective of this work is to show the methodology for the stability study of the electric system in interlinked operation in way to detail the data of the equipment that are necessary, as: One line Diagram; Transmission lines; Transformers; Power system compensator; Generating; Speed regulators; Voltage regulators; Turbines and other. Another focus of the work is to show some control models and regulation of the electric system to maintain it stable and to show models for the interconnection of two or more platforms. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

  3. Evaluation of the Analytical Anisotropic Algorithm (AAA) in dose calculation for fields with non-uniform fluences considering heterogeneity correction; Avaliacao do Algoritmo Analitico Anisotropico (AAA) no calculo de dose para campos com fluencia nao uniforme considerando correcao de heterogeneidade

    Energy Technology Data Exchange (ETDEWEB)

    Bornatto, P.; Funchal, M.; Bruning, F.; Toledo, H.; Lyra, J.; Fernandes, T.; Toledo, F.; Marciao, C., E-mail: pricila_bornatto@yahoo.com.br [Hospital Erasto Gaertner (LPCC), Curitiba, PR (Brazil). Departamento de Radioterapia

    2014-08-15

    The purpose of this study is to evaluate the calculation of dose distribution AAA (Varian Medical Systems) for fields with non-uniform fluences considering heterogeneity correction. Five different phantoms were used with different density materials. These phantoms were scanned in the CT BrightSpeed (©GE Healthcare) upon the array of detectors MAPCHECK2 TM (Sun Nuclear Corporation) and irradiated in a linear accelerator 600 CD (Varian Medical Systems) 6MV and rate dose 400MU/min with isocentric setup. The fluences used were exported from IMRT plans, calculated by ECLIPSE™ planning system (Varian Medical Systems), and a 10x10 cm{sup 2} field to assess the heterogeneity correction for uniform fluence. The measured dose distribution was compared to the calculated by Gamma analysis with approval criteria of 3% / 3 mm and 10% threshold. The evaluation was performed using the software SNCPatient (Sun Nuclear Corporation) and considering absolute dose normalized at maximum. The phantoms best performers were those with low density materials, with an average of 99.2% approval. Already phantoms with plates of higher density material presented various fluences below 95% of the points approved. The average value reached 94.3%. It was observed a dependency between fluency and approved percentage points, whereas for the same fluency, 100% of the points have been approved in all phantoms. The approval criteria for IMRT plans recommended in most centers is 3% / 3mm with at least 95% of points approved, it can be concluded that, under these conditions, the IMRT plans with heterogeneity correction can be performed , however the quality control must be careful because the difficulty of the system to accurately predict the dose distribution in certain situations. (author)

  4. Fisioterapia respiratoria na pressao intracraniana de pacientes graves internados em unidade de terapia intensiva: revisao sistematica

    Directory of Open Access Journals (Sweden)

    Lucas Lima Ferreira

    2013-12-01

    Full Text Available Objetivo: Analisar os desfechos aumento/diminuição da pressão intracraniana e/ou queda da pressão de perfusão cerebral, proporcionados pela fisioterapia respiratória em pacientes graves assistidos em unidade de terapia intensiva. Métodos: Por meio de uma revisão sistemática da literatura, foram selecionados ensaios clínicos publicados entre 2002 e 2012. A busca envolveu as bases de dados LILACS, SciELO, MedLine e PEDro, usando os descritores "physical therapy", "physiotherapy", "respiratory therapy" e "randomized controlled trials" em cruzamento com o descritor "intracranial pressure". Resultados: Foram incluídos 5 estudos, que somaram 164 pacientes, com média de idade entre 25 e 65 anos, e que indicaram que as manobras de fisioterapia respiratória aumentaram significativamente a pressão intracraniana, sem alterar a pressão de perfusão cerebral. Os artigos abordaram as técnicas de vibração, vibrocompressão, tapotagem, drenagem postural, além da manobra de aspiração intratraqueal. Todos os pacientes estavam sob ventilação mecânica invasiva. Conclusão: A fisioterapia respiratória promove aumento da pressão intracraniana. Os estudos sugerem que não há repercussões hemodinâmicas e respiratórias a curto prazo ou alteração da pressão de perfusão cerebral. Entretanto, não há estudos que avaliem desfechos clínicos e que assegurem a segurança das manobras.

  5. Estimulacion magnetica trascraneal en el desempeno motor en enfermedades del sistema nervioso central: Revision Sistematica

    OpenAIRE

    Torres-Narvaez, Martha-Rocio; Rodriguez Valdes, Diana Paola

    2013-01-01

    Introducción: El uso de la estimulación cerebral no invasiva en procesos de rehabilitación es de gran interés, por cuanto con mediación tecnológica se generan nuevas posibilidades de recuperación motora, a partir de la activación de la corteza cerebral. El objetivo del estudio es establecer la evidencia del uso terapéutico de la EMT, relacionado con el desempeño motor de pacientes con enfermedades del sistema nervioso central. Metodología: Se realizó una revisión sistemática de la literatura....

  6. Gerenciamento agil no processo de desenvolvimento de produtos inovadores: uma analise bibliografica sistematica

    National Research Council Canada - National Science Library

    Michels, Everton; Gomes Ferreira, Marcelo Gitirana

    2013-01-01

    ... flexibilidade e adaptabilidade, entre outros. Diante disso esse estudo objetiva analisar onde os metodos ageis ja consagrados, estao sendo aplicados no Processo de Desenvolvimento de Produtos (PDP...

  7. La valutazione economica del trattamento farmacologico con antipsicotici nella schizofrenia: una revisione sistematica della letteratura

    Directory of Open Access Journals (Sweden)

    R. Ravasio

    2005-03-01

    Full Text Available Schizophrenia is a chronic, severe, and disabling brain disease. Approximately 1 percent of the population develops schizophrenia during their lifetime. Available treatments can relieve many symptoms, but most people with schizophrenia continue to suffer some symptoms throughout their lives; it has been estimated that no more than one in five individuals recovers completely. The introduction of second-generation antipsychotics, also defined as atypicals, has increased the therapeutic options available for individuals with schizophrenia. Potential benefits of these agents include a more favourable profile in terms of positive and negative symptoms, less adverse effects and better cognitive functioning than first-generation antipsychotics. It is uncertain whether atypical antipsychotic agents, as prescribed in ordinary practice, are a cost-effective alternative to conventional agents. This study examined the financial and clinical implications of using atypical antipsychotics in the treatment of schizophrenia, considering both related costs and consequences. To elaborate the paper, we reviewed 8 economical studies regarding the comparison between atypical and typical antipsychotics, published in the years 1998-2004. In 5 studies atypical antipsychotics were cost-saving compared to typical, in 2 studies they were cost-neutral and in one study they resulted cost-effective. Consequently typical antipsychotics were cost-saving just in one study.

  8. Dermatitis Asociada a Incontinencia en adultos: un problema sin definicion, revision sistematica

    National Research Council Canada - National Science Library

    Renata Virginia Gonzalez Consuegra; Lizeth Hasbleidy Mora Carvajal; Jhonatan Sebastián Celis Moreno; Gustavo David Matiz Vera

    2015-01-01

    ... la producción científica disponible que aborde la gestión de los cuidados de las personas adultos mayores que presentan dermatitis asociada a incontinencia urinaria, fecal o mixta. Materiales y métodos. Revisión...

  9. alternativas para promoverla

    Directory of Open Access Journals (Sweden)

    Carlos Muñoz Izquierdo

    2006-01-01

    Finalmente, se analizan las políticas que han sido aplicadas con el fin de combatir ese problema, y se sugieren algunos cursos de acción que se consideran potencialmente más eficaces para lograr ese propósito.

  10. Silo para cereales. Bandholm

    Directory of Open Access Journals (Sweden)

    Editorial, Equipo

    1960-09-01

    Full Text Available El silo de Bandholm, para cereales, construido en la isla de Lolland, tiene una capacidad de 13 a 14.000 toneladas. Esta estructura se ha subdividido en células individuales de unas 400 toneladas de capacidad cada una. La obra ha sido proyectada y construida por Christiani & Nielsen.

  11. Instrucciones para autores y autoras

    OpenAIRE

    Casa de la Mujer, Revista

    2015-01-01

    Le recomendamos leer este documento a profundidad para queconozca las políticas y normas para postular a consideración su escrito.Estas instrucciones se organizan en tres apartados: I. Datos básicos,II. Políticas y III. Lineamientos para presentar el escrito; para la citacióny referenciación con APA se ofrece el documento titulado Guía dereferenciación y citación con APA.

  12. ParaChoice Model.

    Energy Technology Data Exchange (ETDEWEB)

    Heimer, Brandon Walter [Sandia National Lab. (SNL-CA), Livermore, CA (United States); Levinson, Rebecca Sobel [Sandia National Lab. (SNL-CA), Livermore, CA (United States); West, Todd H. [Sandia National Lab. (SNL-CA), Livermore, CA (United States)

    2017-12-01

    Analysis with the ParaChoice model addresses three barriers from the VTO Multi-Year Program Plan: availability of alternative fuels and electric charging station infrastructure, availability of AFVs and electric drive vehicles, and consumer reluctance to purchase new technologies. In this fiscal year, we first examined the relationship between the availability of alternative fuels and station infrastructure. Specifically, we studied how electric vehicle charging infrastructure affects the ability of EVs to compete with vehicles that rely on mature, conventional petroleum-based fuels. Second, we studied how the availability of less costly AFVs promotes their representation in the LDV fleet. Third, we used ParaChoice trade space analyses to help inform which consumers are reluctant to purchase new technologies. Last, we began analysis of impacts of alternative energy technologies on Class 8 trucks to isolate those that may most efficaciously advance HDV efficiency and petroleum use reduction goals.

  13. Resina pet para recipientes

    OpenAIRE

    Montenegro, Ricardo Sá Peixoto; Monteiro Filha, Dulce Corrêa; Pan, Simon Shi Koo

    1996-01-01

    O mercado potencial de resina PET para recipientes é grande, com ampla expectativa de expansão. A nível mundial, esta ocorrendo um ciclo de expansão que deverá levar a uma sobrecapacidade, pressionando os preços para baixo. No Brasil, a escassez de resina PET tem retardado sua maior utilização em recipientes, notadamente de bebidas carbonatadas e em mercados em desenvolvimento, como o de óleo comestível e água mineral. Com a entrada em operação da fábrica da Nitrocarbono e da expansão da Rhod...

  14. INICIATIVAS PARA EL CAMBIO

    National Research Council Canada - National Science Library

    César Alfonso Defrancisco-Larrañaga; Christian Camilo Ortiz-López

    2013-01-01

    ... de América del norte, el uso de sistemas de reutilización y tratamiento de aguas grises y aprovechamiento de las aguas lluvias se ha convertido en una constante y nos están dando las pautas para poder seguir el ejemplo y así de esta manera poder aportar a la causa ambiental y a su vez crear un ahorro en nuestros gastos mensuales de consumo.

  15. Educando para la ignorancia

    Directory of Open Access Journals (Sweden)

    Miguel Durán

    1996-06-01

    Full Text Available Más que describir una situación particular, los autores buscan con este escrito motivar al estudiante para que asuma posiciones críticas; así como dar un campanazo de alerta a los profesores, en relación a los conocimientos que transmiten a sus alumnos y la forma en que lo hacen; todo con el ánimo de generar verdaderos espacios de reflexión en la universidad.

  16. INICIATIVAS PARA EL CAMBIO

    Directory of Open Access Journals (Sweden)

    César Alfonso Defrancisco-Larrañaga

    2013-07-01

    Full Text Available El planeta no atraviesa por su mejor momento en materia de conservación y renovación de sus recursos naturales. Claramente en los últimos tiempos los recursos hídricos han venido haciéndose cada vez menores; el hombre ha notado con preocupación y vivido en carne propia este fenómeno, que de no ser tratado a tiempo, podría atentar contra la existencia misma. Esto lo ha alentado a buscar métodos que sirvan como solución para contrarrestar éste mal y crear conciencia entre sus iguales, para así poder garantizar su permanencia y la de su entorno durante muchas generaciones. En países desarrollados del continente europeo y en algunos lugares de América del norte, el uso de sistemas de reutilización y tratamiento de aguas grises y aprovechamiento de las aguas lluvias se ha convertido en una constante y nos están dando las pautas para poder seguir el ejemplo y así de esta manera poder aportar a la causa ambiental y a su vez crear un ahorro en nuestros gastos mensuales de consumo.

  17. para mejorar el %R

    Directory of Open Access Journals (Sweden)

    Alfredo Díaz Mata

    2001-01-01

    Full Text Available En este trabajo se revisan dos indicadores técnicos bursátiles que están estrechamente relacionados, el oscilador estocástico %K de Lane y el oscilador %R de Williams; asimismo, se evalúa el uso de dos mecanismos asociados con el primero y que no suelen utilizarse con el %R: el proceso de frenado (slowing y el uso de un promedio móvil del propio oscilador estocástico como disparadores de señales de compra y de venta. Realizando simulaciones con 27 acciones y el Índice de Precios y Cotizaciones de la Bolsa Mexicana de Valores se verifica la hipótesis principal y se comprueba que, efectivamente, en muchos casos, el uso del proceso de frenado con el oscilador %R de Williams permite tomar mejores decisiones. Por otro lado, se concluye que de los dos disparadores de señales el que mejor funciona, tanto para %K como para %R es el uso de cotas inferior y superior. Este artículo surgió en el curso de una investigación sobre el análisis técnico bursátil de acciones que se puede realizar en su totalidad por computadora y que, esencialmente, excluye el análisis gráfico. Uno de los propósitos del estudio es determinar si es posible, y bajo qué mecanismos, establecer un sistema de análisis bursátil que le permita al inversionista tomar decisiones de inversión en acciones en la Bolsa Mexicana de Valores sin tener que emplear la considerable cantidad de tiempo que es necesario para el análisis gráfico tradicional. Durante este estudio se realizó un análisis preliminar de unos 120 indicadores técnicos para, por un lado, conocerlos con cierto detalle y, por otra parte, aislar aquellos que prometían ser de utilidad para el objetivo de la investigación. Fue en este proceso cuando se detectó que existen dos indicadores que están relacionados y que permiten un análisis por separado que tiene, cuando menos, dos ventajas. En primer lugar está el placer que da a quien gusta de estos temas encontrarse con indicadores que, de acuerdo

  18. Inmunopotenciadores para la acuicultura

    Directory of Open Access Journals (Sweden)

    Rocmira Pérez

    2014-04-01

    Full Text Available La acuicultura es una de las actividades económicas de mayor crecimiento para la producción de alimentos. Uno de sus principales retos es la obtención de grandes volúmenes de producción con la mayor calidad posible. Esto conlleva a una reducción de la aplicación de antibióticos y productos quimioterapéuticos. Una de las estrategias más prometedoras es la aplicación de inmunopotenciadores, principalmente en los cultivos intensivos. El objetivo de este trabajo fue revisar los principales inmunopotenciadores, así como las tendencias y retos de su uso mundial. Se resumen las particularidades moleculares y funcionales de los mismos y se hace énfasis en los más estudiados: levamisol, ß-glucanos, lipopolisacárido, vitamina C, extractos de plantas y hormonas. Todos estos compuestos de naturaleza heterogénea inciden mayoritariamente en los componentes de la inmunidad innata de los peces, fortaleciendo y potenciando la resistencia a enfermedades; adicionalmente algunos de ellos tienen funciones antiestrés y favorecen su crecimiento. Se concluye que los inmunopotenciadores constituyen una estrategia viable para reducir las pérdidas por problemas sanitarios en el sector de la acuicultura; pero aún quedan por solucionar aspectos como la vía de administración y la etapa de inmunización adecuada para cada especie y tipo de cultivo.

  19. Para pensar o afeto

    Directory of Open Access Journals (Sweden)

    Aluisio Pereira de Menezes

    Full Text Available Apresentação de um conjunto de formulações relativas ao “afeto” anteriores ao surgimento da psicanálise. Dificuldade da psicanálise em construir uma concepção propriamente psicanalítica. Contribuição da fenomenologia de Husserl para o estudo do afeto. Atualidade das concepções do afeto marcadas pelas neurociências. As maneiras principais de ver o problema da conceituação do afeto no pensamento psicanalítico.

  20. Comunicar para la salud

    OpenAIRE

    Lic. Eva Bocco

    1998-01-01

    Con este trabajo quiero plantearles una inquietud en torno al rol que nos cabe a los comunicadores en el área de la salud desde la perspectiva de la comunicación para la salud. ¿Se puede pensar la salud pública desvinculada de la comunicación? ¿La comunicación es posible sin la existencia de salud en la comunidad? ¿Qué puede hacer un comunicador en el ministerio de salud? ¿Puede un estado desarrollar políticas de salud sin la presencia de la comunicación?

  1. Democracia para ciudadanos ciborgs

    Directory of Open Access Journals (Sweden)

    Juan Varela

    2007-07-01

    Full Text Available Enumera los instrumentos imprescindibles de la ciberpolítica para campañas electorales en España, cuando se renovaron los cargos municipales. La política vuelve a ser personal cuando ciudadanos y políticos se hablan cara a cara y cita varios ejemplos, reconociendo la recuperación de la comunicación directa. La ciberdemocracia es muy exigente. Los políticos prefieren la magia de la imagen. La sociedad no sabe como detener la propaganda viral que bombardea a los buscadores de red.

  2. Vivienda temporal para refugiados

    OpenAIRE

    Amonarraiz Gutiérrez, Ana

    2015-01-01

    El proyecto se centra en el diseño y desarrollo de un espacio destinado a vivienda temporal para dar hogar a personas que han perdido su casa. Este tipo de vivienda es fundamental dentro del proceso de recuperación post-desastre ya que la construcción inmediata de viviendas permanentes es utópica. El objetivo principal es la construcción de una vivienda temporal formada por elementos prefabricados, logrando así una mayor rapidez en su montaje. Esto también permitirá que cualquier component...

  3. "Colaborar para Competir"

    Directory of Open Access Journals (Sweden)

    Martha Liliana Hijuelos-Cárdenas

    2016-08-01

    Full Text Available De acuerdo con Michael Porter, los Clusters se definen como “Una agrupación de empresas e instituciones relacionadas entre sí, pertenecientes a un mismo sector o segmento de mercado, que se encuentran próximas geográficamente y que colaboran para ser más competitivas”. Los Clusters son en última instancia una herramienta de competitividad basada en la cooperación de sus miembros, y es una de las estrategias recientes, en el país, para incrementar la productividad y competitividad y las apuestas productivas desde el nivel local. Y es precisamente esta cercanía geográfica de las empresas de un mismo sector, lo que a la vez que genera la competencia entre ellas, también les facilita el acceso a insumos y a conocimientos específicos y en última instancia les permite promover la innovación.

  4. Principios teatrales para docentes

    Directory of Open Access Journals (Sweden)

    R. Irene Arroyo Zúñiga

    2005-01-01

    Full Text Available Este trabajo pretende dar herramientas a los docentes para que puedan utilizarlas como parte de las actividades dentro de un plan de elección, en cualquier disciplina. Además encontrará una exposición de los elementos que componen el arte de la representación escénica, como son: 1. Expresión corporal; es la capacidad de expresar emociones partiendo únicamente de nuestro cuerpo. 2. Impostación; es la habilidad de proyectar la voz sin lastimar las cuerdas vocales. 3. Dicción; es la pronunciación correcta de las palabras. 4. Actuación; es la posibilidad de crear un personaje partiendo de los recursos expresivos y de la forma natural en que el alumno acostumbra a reaccionar. Técnica de improvisación, en éste artículo propongo una serie de seis pasos que pueden ser de gran ayuda a la hora de usar el teatro como recurso didáctico. El teatro a lo largo de la historia ha sido usado para transmitir conocimientos, valores, creencias y todo aspecto inherente a los individuos y su entorno social. Por lo tanto debemos aprovechar al máximo los beneficios que nos ofrece el teatro como educadores

  5. Caseta para la playa

    Directory of Open Access Journals (Sweden)

    Garrick, R. M.

    1958-02-01

    Full Text Available Esta encantadora muestra de caseta de baño fue diseñada por la Compañía Americana de Aluminio, bajo la dirección de la célebre asociación de arquitectos Harrison y Abramovitz. Tiene la propiedad de poder "seguir" al sol en su marcha —como los girasoles—, y está montada, al efecto, sobre una plataforma giratoria que le permite situarse en la forma más conveniente y adecuada para sus moradores. La planta es estrellada de ocho puntas. La cubierta plegada, de colores, y los triángulos acristalados de los tímpanos le dan el aspecto de diafanidad apetecido y la hacen perfectamente accesible desde todos los puntos.

  6. Sustantivos para definir homofobia

    OpenAIRE

    Campo Árias, Adalberto; Herazo, Edwin; Oviedo, Heidi

    2013-01-01

    Introducción. El término ‘homofobia’ es un concepto que se introdujo en el contexto académico hace más de 40 años. Sin embargo, la acepción ha tenido reparos y cambios en el tiempo. Objetivo. Revisar los sustantivos usados en los últimos doce años para definir homofobia. Metodología. Se realizó una búsqueda sistemática en Medline a través de Pubmed de publicaciones tipo editorial, cartas al editor, comentarios y entrevista en español o inglés. Se realizó un análisis cualitativo (teoría fundam...

  7. Requerimientos para aplicaciones web

    OpenAIRE

    Oliveros, Alejandro; Wehbe, Ricardo; Rojo, Silvana del Valle; Rousselot, Julián

    2011-01-01

    El objetivo del presente proyecto es la elaboración de un conjunto de políticas, estándares, procesos, metodologías, técnicas, herramientas y métricas para aplicar en el desarrollo de aplicaciones Web, específicamente en la obtención y representación de los requerimientos que debe satisfacer el sistema o aplicación Web. Estos distintos elementos se desarrollarán en forma gradual y eventualmente se integrarán en un sitio Web que centralice toda la información. Hay varias líneas de investigació...

  8. Bases para proyectiles dirigidos

    Directory of Open Access Journals (Sweden)

    Editorial, Equipo

    1959-03-01

    Full Text Available Aunque actualmente no se ha llegado a una línea general de métodos o sistemas que gobiernen un tipo característico de rampa y servicios auxiliares necesarios para el lanzamiento al espacio de proyectiles dirigidos a grandes alturas y distancias, las experiencias obtenidas en diferentes ensayos, utilizando distintos tipos de proyectiles y trayectorias balísticas, han sentado toda una serie de procedimientos, datos y conclusiones de gran valor balístico que, aun teniendo en cuenta la continua evolución del proyectil, sus formas, combustibles y alcances, se conocen ya, con bastante aproximación, las condiciones mínimas que ha de reunir una base dedicada a este tipo de lanzamientos.

  9. Registrar para avanzar

    Directory of Open Access Journals (Sweden)

    Laia Matarranz Torres

    2017-06-01

    Full Text Available El farmacéutico comunitario es un profesional sanitario con un enorme potencial para mejorar no solo el uso de los medicamentos (detectando, por ejemplo, resultados negativos de la medicación, sino también la prevención de enfermedades y la promoción de la salud pública. Sin duda, el desarrollo y el impulso que están teniendo los servicios profesionales farmacéuticos (SPF desde hace años pueden contribuir decisivamente a que este potencial se consolide de una forma definitiva, obteniendo el reconocimiento del conjunto del sistema sanitario, incluyendo tanto a otros profesionales de la salud (médicos, enfermería, medicina especializada… como a la Administración y, por supuesto, a los propios pacientes beneficiarios de estos servicios. Es cierto que la figura del farmacéutico y su ejercicio sanitario han estado tradicionalmente bien considerados por la población, pero no es menos verdad que la integración de la actividad asistencial de la farmacia comunitaria en el Sistema Nacional de Salud (SNS es, cuanto menos mejorable, y que, incluso, algunas manifestaciones ponen en entredicho de vez en cuando la labor científico-asistencial de las farmacias o generan dudas sobre su capacidad para formar parte de pleno derecho de los equipos de salud que deben trabajar de forma coordinado en la mejora de la atención sanitaria de los pacientes.

  10. Planar Para Algebras, Reflection Positivity

    Science.gov (United States)

    Jaffe, Arthur; Liu, Zhengwei

    2017-05-01

    We define a planar para algebra, which arises naturally from combining planar algebras with the idea of ZN para symmetry in physics. A subfactor planar para algebra is a Hilbert space representation of planar tangles with parafermionic defects that are invariant under para isotopy. For each ZN, we construct a family of subfactor planar para algebras that play the role of Temperley-Lieb-Jones planar algebras. The first example in this family is the parafermion planar para algebra (PAPPA). Based on this example, we introduce parafermion Pauli matrices, quaternion relations, and braided relations for parafermion algebras, which one can use in the study of quantum information. An important ingredient in planar para algebra theory is the string Fourier transform (SFT), which we use on the matrix algebra generated by the Pauli matrices. Two different reflections play an important role in the theory of planar para algebras. One is the adjoint operator; the other is the modular conjugation in Tomita-Takesaki theory. We use the latter one to define the double algebra and to introduce reflection positivity. We give a new and geometric proof of reflection positivity by relating the two reflections through the string Fourier transform.

  11. Leer para Creer

    Directory of Open Access Journals (Sweden)

    Roberto Polanco-Carrasco

    2011-12-01

    Full Text Available Más allá de los prejuicios que se puedan alimentar en las aulas por -en ocasiones- brillantes exponentes de la clínica psicológica, resultaría difícil creer que exista hoy en día un profesional que se atreva a sostener que el ser humano es sólo mente, o argumentar que lo corporal o cerebral es secundario e incluso irrelevante en los pacientes con los que habitualmente se deberá tratar. De hacerlo simplemente sería un acto de ignorancia, sobretodo en un momento en que disponemos de evidencias diarias desde las neurociencias que dan para sostener la unidad mente-cuerpo como nunca antes en la historia del estudio de “lo psicológico”. La convicción de que los estudiantes deberán ser nutridos con las nociones básicas de los modernos estudios del cerebro debería reflejarse en la bibliografía de diversas asignaturas y estar presente en el espíritu central del quehacer académico como una manera de prevenir esta viciosa tendencia a ningunear aquello que se desconoce y que finalmente cegará a la hora de probar nuevas formas de ver “el síntoma”.

  12. para promover la salud

    Directory of Open Access Journals (Sweden)

    Ma. del Consuelo Chapela

    2002-01-01

    Full Text Available Hablar de educación a distancia sustentada en el desarrollo de la cibernética obliga a reflexionar sobre sus definiciones, objetivos y medios, especialmente si pensamos en las necesidades de la fracción de población que no tiene acceso a las posibilidades que ofrece el desarrollo tecnológico. En este trabajo se presenta e ilustra con un ejemplo práctico, una perspectiva sobre las posibilidades de la educación a distancia desde las necesidades de la promoción de la salud entre grupos de población marginada en el mundo virtual. Se propone la creación de bibliotecas itinerantes regionales que pongan a disposición de la población con acceso limitado a la información, la tecnología comunicativa necesaria para apoyar los trabajos de promoción de la salud.

  13. Marcadores para la Realidad Aumentada para fines educativos

    Directory of Open Access Journals (Sweden)

    María Reina Zarate Nava

    2013-12-01

    Full Text Available La Realidad Aumentada (AR es considerada por algunos expertos como la tecnología en crecimiento para el 2014, en diferentes sectores: ingeniería, educación, juegos y negocios, siendo este último el más usado en él 2013. Sin embargo en el sector educativo la AR se presenta en algunos proyectos que se han desarrollado para diferentes áreas de las ciencias, como Química, Física y Matemáticas, lo anterior con el objetivo de facilitar el proceso de Enseñanza-Aprendizaje. En el presente artículo se presenta el modelo de patrones utilizado para un Proyecto AR enfocado en Química, el cual presenta un conjunto de patrones que fueron valorados para facilitar el rastreo de los objetos y a su vez el entendimiento de algunos materiales de los laboratorios de Química I.

  14. Una agenda para educadores

    Directory of Open Access Journals (Sweden)

    Robert O. McClintock

    2007-01-01

    Full Text Available Las instituciones educativas constituyen los principales factores en la construcción social de un nuevo sistema educativo. Las escuelas y los educadores controlan y producen propiedad intelectual de una extraordinaria profundidad y amplitud. Los cambios producidos por las tecnologías digitales están consiguiendo que el acceso y la producción de conocimiento sea más accesible y universal. Lo que es, a la vez, un gran logro de apertura curricular, pero también un grave peligro de perder la perspectiva eminentemente “educativa” de la transmisión del conocimiento en la escuela. Los nuevos recursos permiten a los educadores romper el ciclo de reproducción en los logros educativos, acercarse al medio y a la familia y transformar la escuela. Los educadores y las escuelas deben asumir el reto de constituir comunidades de aprendizaje. Así como de atreverse a producir y difundir ese conocimiento con soporte digital. Lo contrario sería una terrible abdicación. El artículo traza un recorrido histórico sobre esta función de la escuela y su adaptación a los medios y recursos de cada época. Tras lo cual, aboga por asumir el desafío actual de las TICs, para renovar el vínculo progresista con la posteridad y construir un mejor futuro. Los nuevos recursos permiten a los educadores romper el ciclo de reproducción en los logros educativos, acercarse al medio y a la familia y transformar la escuela.

  15. Uma obra para museu

    Directory of Open Access Journals (Sweden)

    Thais Rivitti

    2009-06-01

    Full Text Available Por meio da análise de duas obras de arte: "Inserções em circuitos ideológicos: Projeto Coca-Cola" (1970, de Cildo Meireles e "contemplação suspensa" (2009, de Rubens Mano, o texto busca investigar o papel do museu de arte hoje. Ambos os artistas têm trajetórias marcadas por uma reflexão sobre a expansão do circuito da arte, para além do público e dos locais convencionais, buscando, cada um a seu modo, inserir a arte no fluxo da cidade. Contudo, algumas de suas obras têm como destino final o museu e comentam a situação da instituição, seu papel regulador, o estatuto da obra de arte e as possibilidades de haver uma experiência radical no interior desses ambientes. Trata-se de refletir sobre a situação e o funcionamento dos museus à luz de duas propostas artísticas diferentes.Through the analysis of two works of art: "Insertions into ideological circuits: Coca-Cola Project" (1970, by Cildo Meireles, and "contemplation suspended" (2009, by Rubens Mano, the text attempts to investigate the role played by art museums today. Both artists have histories marked by a debate on the expansion of the art circuit to beyond the conventional public and places, seeking, each in its own way, to insert art into the flow of the city. However, some of their works have the museum as final destination and comment on the situation of the institution, its regulatory role, the statute of the work of art and the possibilities to have a radical experience within those environments. The main objective is to reflect on the situation and functioning of museums in view of two different artistic proposals.

  16. 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

  17. PARA UMA FENOMENOLOGIA DA JUVENTUDE

    Directory of Open Access Journals (Sweden)

    Frei Bernardino Leers

    2013-03-01

    Full Text Available Esta reflexão foi escrita por um homem idoso que para a delicadeza francesa é quase um homem da terceira idade, mas para os jovens é um velho. Por que é que tal homem se interessa pela juventude de hoje e quer pensar sobre esta juventude de que não faz parte e com cujos movimentos teve apenas alguns contatos?(1.

  18. La aplicacion del concepto de autopoiesis en los estudios de genero: el derecho a autocomponerse del sujeto en referencia a su identidad sexual

    National Research Council Canada - National Science Library

    Vivanco Martinez, Angela

    2006-01-01

    .... En cambio, se postula un sistema de autocomposicion del sujeto que recoge las caracteristicas que Maturana y Varela otorgaron a los seres vivos, superando el propio encapsulamiento de la sociedad que significa reconocerla como una unidad cerrada. Para ello, sera necesaria la utilizacion sistematica del conflicto, en orden a posibilitar la "diferencia" y la existencia de estatutos diversos y omnicomprensivos de las realidades humanas. Palabras clave: persona, genero, igualdad, diferencia, autopoiesis, autocompo...

  19. "HÁ UM TEMPO PARA CALAR E UM TEMPO PARA FALAR"

    Directory of Open Access Journals (Sweden)

    Carlo Maria Martini

    2011-01-01

    Full Text Available "Para tudo há momento, e tempo para cada coisa sob o céu: tempo de dar a luz e tempo de morrer, tempo de plantar e tempo de arrancar o que se plantou; tempo de matar e tempo de curar; tempo de destruir e tempo de construir; tempo de chorar e tempo de rir; tempo de lamentar e tempo de dançar; tempo de atirar pedras e tempo de juntar pedras; tempo de abraçar e tempo de evitar o abraço; tempo de procurar e tempo de perder; tempo de guardar e tempo de jogar fora;

  20. Masterplan para UNIMAK y Estrategias para la ciudad de Makeni

    OpenAIRE

    Bacete Cebrian, Laura

    2012-01-01

    El proyecto se desarrolla en tres escalas. Por un lado están las propuestas a nivel ciudad muy relacionadas con la siguiente escala, la de la universidad, y por último hay una escala de detalle, tanto para ciudad como para universidad. Se plantea la creación de unos nodos interconectados por los corredores verdes de la ciudad que den servicios básicos a la ciudad tales gestión de residuos, equipamientos públicos, puntos de agua, saneamiento...)

  1. MODELO PARA ESTABLECER SANCIONES PECUNIARIAS PARA DELITOS AMBIENTALES

    OpenAIRE

    LUIS DIEGO VÉLEZ GÓMEZ

    2012-01-01

    Este artículo pretende exponer el modelo básico que sustenta el desarrollo de multas óptimas; en él se muestra la forma de desincentivar los intereses del violador de la normatividad ambiental, e igualmente el método para alcanzar efectos compensatorios sobre los daños cometidos al medio ambiente. El desarrollo del tema sobre sanciones pecuniarias (multas) y penalidades (encarcelamiento) toma la relación contractual entre el agente (la empresa) y el principal (La entidad reguladora) para, a t...

  2. Habilidades para la Vida. Una Propuesta para Convivir Mejor

    OpenAIRE

    Mantilla Castellanos, Leonardo

    2014-01-01

    Síntesis que contienen los fundamentos conceptuales, metodológicos y operativos como iniciativa mundial para la educación en Habilidades para la Vida, estrategia educativa promovida por la Organización Mundial de la Salud y validada en Colombia por Fe y Alegría, cuyos principales objetivos son contribuir a la promoción del desarrollo personal y social, la protección de los derechos humanos y la prevención de problemas psicosociales y de la salud.

  3. Documentos interactivos EXCEL para simuladores

    OpenAIRE

    Fornells-O'Connor, Andrés

    2014-01-01

    La tecnología conocida como Microsoft Visual Studio Tools for Office (VSTO) ofrece la posibilidad de integrar Office con la plataforma .NET de forma que podamos implementar aplicaciones .NET con la apariencia de documentos de Microsoft Office. La utilización de la tecnología VSTO con hojas de cálculo para la creación de herramientas de simulación es un campo interesante por la familiaridad que las hojas de cálculo ofrecen a cualquier usuario. Cuando se desarrolla un complemento para un sim...

  4. Estrategias Digitales Para Los Negocios

    OpenAIRE

    Sánchez, Nicolás David; Porras, María Paula

    2016-01-01

    Este trabajo es para fines institucionales de la Universidad del Rosario. A lo largo del segundo semestre del año 2016 entendimos la importancia de los medios digitales para las empresas, por lo cual el profesor Juan Manuel Méndez nos dio el caso de las bicicletas de Nairo Quintana con el cual teníamos que desarrollar un plan de estrategias digitales acorde con el contexto actual del sector de las bicicletas, en donde se creara y desarrollara la marca de la agencia digital creada por los estu...

  5. Sistema de puestos para feria

    OpenAIRE

    Rocca, Pedro

    2013-01-01

    Uno de los objetivos de este trabajo fue trabajar sobre la problemática espacial y resolver el diseño de productos en los que los usuarios están en el interior y en el exterior. Se sumaron, a esto, las problemáticas del transporte y de la apertura y el cierre, distintas situaciones funcionales que requiere un puesto de estas características. El diseño se orientó al desarrollo de los puestos de venta ambulante para las ferias de la ciudad de La Plata. Se desarrollaron puestos para los siguient...

  6. Drupal para bibliotecas y archivos

    OpenAIRE

    Tramullas, Jesús

    2010-01-01

    Drupal: fundamentos técnicos 7 Tomás Saorín Drupal: módulos para bibliotecas, archivos y servicios de información y documentación 21 Jesús Tramullas y Piedad Garrido Experiencia de recbib – recursos bibliotecarios con Drupal: del texto plano a la gestión de contenidos 29 Julián Marquina “www.liberadosdelolvido.org” Servicio de información sobre la memoria histórica en Aragón 43 Julián Moyano Desarrollo de un gestor de contenidos para la administración del c...

  7. Marco para la Ciencia Abierta

    OpenAIRE

    F.J. García-Peñalvo

    2017-01-01

    El seminario “Marco para la Ciencia Abierta” se impartió el día 4 de diciembre de 2017 en Campus Monterrey del Tecnológico de Monterrey dentro de la Estancia internacional UNESCO/ICDE del movimiento educativo abierto 2017, del 04 al 15 de diciembre 2017. En dicho evento se han dado cita más de 80 participantes, de 13 países con el objeto de construir colaborativamente proyectos abiertos para la educación, en el contexto de los participantes. En este seminario se va a introducir el c...

  8. The use of stochastic method for the calculation of liquid-vapor multicomponent equilibrium and the contribution of groups theory for the evaluation of fugacity coefficient; Uso de um metodo estocastico para calculo do equilibrio liquido-vapor de sistemas multicomponentes e avaliacao de uma abordagem por contribuicao de grupos para o calculo do coeficiente de fugacidade

    Energy Technology Data Exchange (ETDEWEB)

    Cavalcanti, Rafaelly L.; Oliveira, Jackson A. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Engenharia Quimica; Rojas, Leopoldo O.A. [Centro de Tecnologias do Gas (CTGAS), Natal, RN (Brazil)

    2008-07-01

    This work has the main objective of evaluating the mathematical model developed by Jaubert e Mutelet (2004) in terms of the prediction capacity for the calculation of the vapor-liquid equilibrium (VLE). This model is based on Peng-Robinson equation of state (EOS) and it considers the binary interaction parameters (Kij(T)) estimated by a contribution group method and dependent of the temperature. The model proposed by Jaubert e Mutelet (2004), named PPR78 (Predictive Peng-Robinson), was implemented in this work by using the Fortran language. An optimization approach based on the stochastic algorithm of Particle Swarm Optimization (PSO) was used in order to calculate the vapor-liquid equilibrium. Simulations were accomplished for several binary systems and the results were concordant with some experimental data of the investigated systems. However, for some systems different from those presented by Jaubert and Mutelet (2004), the model presented low prediction capacity. In spite of the great demand of computational performance, the algorithm PSO demonstrated robustness during the calculation of VLE and it assured convergence in most of the cases. (author)

  9. MODELO PARA LA CREACIÓN DEL CONOCIMIENTO PARA PYMES

    Directory of Open Access Journals (Sweden)

    Marino Valencia Rodríguez

    2009-01-01

    Full Text Available La creciente importancia del conocimiento, como nuevo factor de producción, hace que la creación y transferencia se convierta en una de las principales prioridades de las organizaciones. El presente artículo describe tanto los fundamentos de la teoría de los recursos y capacidades de la empresa como el enfoque de la gestión del conocimiento, con sus procesos de generación y transferencia del conocimiento. Estos sirven de guía básica teórica para alcanzar el siguiente objetivo: Diseñar un modelo de generación y transferencia de conocimiento para los procesos de dirección, gestión humana y del conocimiento para PyMES, con el fin de que éstas alcancen mayores niveles de competitividad. El modelo se diseña, a partir del direccionamiento estratégico de la organización. Está conformado por tres etapas, articuladas con elementos y actividades. Las acciones se enfocan en dos factores clave de éxito: la cultura organizacional y la formación. La utilización del modelo permitirá a las PyMES optimizar los recursos y capacidades disponibles, lo cual se refleja en el desempeño del trabajador y en el fortalecimiento de la cultura organizacional.

  10. MODELO PARA ESTABLECER SANCIONES PECUNIARIAS PARA DELITOS AMBIENTALES

    Directory of Open Access Journals (Sweden)

    LUIS DIEGO VÉLEZ GÓMEZ

    2012-01-01

    Full Text Available Este artículo pretende exponer el modelo básico que sustenta el desarrollo de multas óptimas; en él se muestra la forma de desincentivar los intereses del violador de la normatividad ambiental, e igualmente el método para alcanzar efectos compensatorios sobre los daños cometidos al medio ambiente. El desarrollo del tema sobre sanciones pecuniarias (multas y penalidades (encarcelamiento toma la relación contractual entre el agente (la empresa y el principal (La entidad reguladora para, a través de esta relación, entrar en la determinación de un diseño eficaz de sanciones. Se utilizara el modelo de agente-principal para examinar los efectos de las sanciones corporativas e individuales sobre los incentivos de cumplimiento en el contexto ambiental; además se emplearán los conceptos de bienes públicos, bienes comunes y externalidades como categorías de análisis que permiten la identificación y valoración de daños ambientales.

  11. Revision sistematica de la asociacion entre sobrepeso, obesidad y enfermedad mental, con enfasis en el trastorno esquizofrenico

    National Research Council Canada - National Science Library

    Joffre-Velazquez, Victor Manuel; Garcia-Maldonado, Gerardo; Saldivar-Gonzalez, Atenogenes H; Martinez-Perales, Gerardo

    2009-01-01

    ...: Describir algunas generalidades relacionadas con la obesidad y el sobrepeso y revisar la asociacion que puede darse entre estas circunstancias y la enfermedad mental, en general, y la esquizofrenia...

  12. El Ensayo, Para Formar Profesionales Reflexivos

    National Research Council Canada - National Science Library

    Nestor Perico-Granados; Pedro M. Acosta-Castellanos; Néstor Rafael Perico-Martínez

    2015-01-01

    .... Desarrolla un primer proceso para escribir un ensayo, a través de la jerarquización de las ideas. Finalmente, se proponen unas conclusiones que pueden ser útiles para quienes quieran escribir ensayos.

  13. Espacio de trabajo colaborativo para emprendedores, Pinedo

    OpenAIRE

    FERRIZ NAVARRO, ANDRÉS

    2016-01-01

    Espacio de trabajo colaborativo (CoWorking) para emprendedores en Pinedo. Ferriz Navarro, A. (2014). Espacio de trabajo colaborativo para emprendedores, Pinedo. http://hdl.handle.net/10251/67050. Archivo delegado

  14. FRANQUICIAS. Una Alternativa para Emprendedores

    Directory of Open Access Journals (Sweden)

    Jorge Enrique Silva Duarte

    2003-07-01

    Full Text Available Este artículo presenta las ventajas de las franquicias como alternativa de negocios. Para un emprendedor exitoso ya establecido es más rentable permitir el uso de su conocimiento explícito mediante el formato de negocio de su firma y recibir regalías mensuales sobre las ventas brutas, que invertir en la apertura de cada nuevo punto. Igualmente, para quien desee iniciarse como empresario, la modalidad de franquicia es muy interesante: en primer lugar, porque empieza con un negocio ya probado, utiliza la imagen extendida de la franquicia y recibe un apoyo corporativo del franquiciador; adicionalmente, detrás del formato de negocio que contrata, está el capital relacional, en otras palabras, la experticia del franquiciador, el conocimiento del mercado, la base de clientes y de proveedores y el capital humano.

  15. Ética para Amador

    OpenAIRE

    1992-01-01

    El llibre de Fernando Savater Ética para Amador va dirigit a Amador, el seu fill, i amb ell, a tots els joves, i també als grans que necessitem que ens recordin coses que de vegades tenim massa oblidades. De què tracta Ética para Amador? Doncs d'Ètica, precisament. Però entenent-la no com allò que serveix per a concloure cap debat, i sí per a iniciar-los tots. Savater deixa clar que no és un llibre de text. És més aviat un llibre que fa reflexionar els joves, però també els adults, sobre la n...

  16. Diagramas de Bianchi para Susy

    Directory of Open Access Journals (Sweden)

    Sara Cruz y Cruz

    2006-01-01

    Full Text Available Se revisa el origen de los solitones como soluciones de la ecuación de Korteweg-de Vries y su presencia en la formulación supersimétrica de la Mecánica Cuántica. Se introducen los diagramas de Bianchi como una herramienta simbólica para construir socios supersimétricos de un Hamiltoniano dado.

  17. Cuento: para eso es hombre

    Directory of Open Access Journals (Sweden)

    José Chalarca

    1983-06-01

    Full Text Available No recuerdo si usaba zapatos, solo que era una época difícil para la familia. Una racha de mala suerte que culminó con la prisión del padre, lo forzó a dejar la escuela y a emplearse como mandadero en una casa de ricos cuando tenía apenas once años.

  18. Financiamiento para construir la finca.

    Directory of Open Access Journals (Sweden)

    Túpac Barahona.

    1998-08-01

    Full Text Available Las instituciones financieras convencionales y no convencionales tienden a excluir de los servicios de crédito a los sectores más frágiles del campesinado, por considerarlos clientes altamente riesgosos. En este artículo, se discute el sentido económico y social que tendrían que desarrollar esquemas de financiamiento para campesinos con economías débiles, pero con un potencial de desarrollo latente.

  19. Encuestas para llegar al poder

    Directory of Open Access Journals (Sweden)

    Luis Eladio Proaño

    2015-01-01

    Full Text Available Las encuestas son parte fundamental de los procesos políticos. Pero en América Latina apenas se utilizan. Además, la mayoría de la población las considera sospechosas. Un director de campaña moderno, necesita datos precisos para que su candidato tenga posibilidades ciertas de ganar. Con las encuestas sí se puede.

  20. Coccocypselum pulchellum (Rubiaceae, nuevo registro para Argentina

    Directory of Open Access Journals (Sweden)

    Elsa L. Cabral

    2007-01-01

    Full Text Available Se cita Coccocypselum pulchellum por primera vez para Argentina, en Predio Guaraní, Misiones. Esta es la tercera especie de Coccocypselum registrada para la flora de Argentina junto con C. hasslerianum y C. lanceolatum. Se incluyen descripciones, ilustraciones y una clave para reconocer las tres especies argentinas de Coccocypselum.

  1. Nacidos para curar...y vivir.

    OpenAIRE

    Pedro A Marina González

    2009-01-01

    Se presentan argumentos para el debate acerca del impacto para la sociedad y el individuo de las técnicas de reproducción que permiten el “diseño” genético de bebes para el tratamiento de hermanos con enfermedades incurables.

  2. requisito para pensar la paz

    Directory of Open Access Journals (Sweden)

    Jaidivi Núñez Varón

    2006-01-01

    Full Text Available Este documento señala puntos de discusión para reflexionar sobre cómo la justicia basada en la construcción social tiene la posibilidad de convertirse en un requisito para pensar la paz. El análisis inicia desde algunos horizontes planteados por la sociología jurídica, la antropología jurídica, la psicología social y el derecho. El objetivo es permitir que el lector tenga preguntas que contribuyan para pensar la paz en un país que tiene la coyuntura del conflicto armado y que cuestiona la justicia desde el escalamiento de la violencia en el espacio cotidiano. Se señalan algunos puntos de la relación entre la justicia y la paz desde la construcción del Estado, identificando los momentos y características de la conexión de estos dos conceptos en el curso de los acontecimientos históricos. Se presenta la concepción de la justicia a través de la óptica del pensamiento complejo y se plantea una discusión de cómo pensar la paz desde la construcción social.

  3. Estrategia para la sustentabilidad ambiental

    Directory of Open Access Journals (Sweden)

    Cecilia Erbiti

    2006-01-01

    Full Text Available En el contexto de los postulados conceptuales y metodológicos de la planificación estratégica y de sustentabilidad ambiental, el objetivo de esta investigación es describir el proceso de formulación del Plan de Ordenamiento Territorial del Municipio de Tandil (POTM y analizar su potencialidad para avanzar hacia la sustentabilidad ambiental del sistema. Los resultados de la misma muestran que el POTM no sólo prioriza principios, objetivos y estrategias que materializan las diferentes manifestaciones de la sustentabilidad (económica, social, ecológica y política, sino que la totalidad del Plan se fundamenta en el concepto de desarrollo sostenible y, con ello, se establecen prioridades de actuación que posibilitarán la gestión ambiental urbana. Si bien el POTM muestra una gran potencialidad para avanzar hacia la sustentabilidad del territorio, la implementación y cumplimiento del mismo constituye un fuerte desafío para las autoridades de aplicación.

  4. Condiciones para el aprendizaje organizacional

    Directory of Open Access Journals (Sweden)

    Delio Ignacio Castañeda

    2015-01-01

    Full Text Available El propósito de esta investigación es contribuir al entendimiento de algunas condiciones que favorecen el aprendizaje en las organizaciones, específicamente el rol de la cultura del aprendizaje, la formación, la claridad estratégica y el soporte organizacional. Se emplea una metodología cuantitativa con 613 participantes, empleados de una organización pública y 2 compañías privadas, las 3 entidades ubicadas en Bogotá, Colombia. Para la realización del estudio se conformó una muestra por conveniencia, con el apoyo de los jefes de recursos humanos de 3 organizaciones con sede en la ciudad de Bogotá, Colombia. Para la recolección de los datos se utilizó una escala Likert de 5 niveles de respuesta. Los resultados sugieren que las 4 condiciones estudiadas contribuyen al aprendizaje organizacional. Los hallazgos de este trabajo orientan a profesionales sobre dónde focalizar esfuerzos para promover la adquisición y la generación de conocimiento organizacional y aporta al trabajo investigativo ampliando la evidencia empírica sobre este campo de relevancia organizacional.

  5. Condiciones para el aprendizaje organizacional

    Directory of Open Access Journals (Sweden)

    Delio Ignacio Castañeda

    2015-01-01

    Full Text Available El propósito de esta investigación es contribuir al entendimiento de algunas condiciones que favorecen el aprendizaje en las organizaciones, específicamente el rol de la cultura del aprendizaje, la formación, la claridad estratégica y el soporte organizacional. Se emplea una metodología cuantitativa con 613 participantes, empleados de una organización pública y 2 compa˜nías privadas, las 3 entidades ubicadas en Bogotá, Colombia. Para la realización del estudio se conformó una muestra por conveniencia, con el apoyo de los jefes de recursos humanos de 3 organizaciones con sede en la ciudad de Bogotá, Colombia. Para la recolección de los datos se utilizó una escala Likert de 5 niveles de respuesta. Los resultados sugieren que las 4 condiciones estudiadas contribuyen al aprendizaje organizacional. Los hallazgos de este trabajo orientan a profesionales sobre dónde focalizar esfuerzos para promover la adquisición y la generación de conocimiento organizacional y aporta al trabajo investigativo ampliando la evidencia empírica sobre este campo de relevancia organizacional.

  6. para asegurar un hijo sano

    Directory of Open Access Journals (Sweden)

    Carmen Amarilis Guerra de Castillo

    2006-01-01

    Full Text Available Esta investigación etnográfica focalizada exploró las creencias, los valores, los hábitos y los padrones comportamentales de las embarazadas diabéticas atendidas en el Hospital Doctor Enrique Tejera, quienes residen en tres comunidades urbanas pobres de la ciudad de Valencia - Venezuela, con el objetivo de encontrar el significado del cuidado de si para dichas grávidas. Se utilizó como referencial teórico el Modelo del Análisis de la Salud y la Teoría Antropológica de la Salud, siendo fundamentales para revelar aquello que estaba implícito en el comportamiento de las mujeres con relación a su cuidado. Surgieron tres temas: la salud y la enfermedad - valores culturales del cuidado de si; las prácticas del cuidado de la salud y cuidándose en el embarazo garantiza tener un hijo más saludable. Los temas culturales revelaron que las creencias, los valores, los hábitos y los patrones culturales comportamentales, conforme las tres maneras de acción identificadas, pueden ser preservadas, acomodadas y re-estructuradas para proporcionar un cuidado culturalmente congruente.

  7. Nueva Sede para la Academia

    Directory of Open Access Journals (Sweden)

    Mario Camacho Pinto

    1994-06-01

    Full Text Available

    Una nueva sede adecuadamente dotada siempre estuvo en la mente de nuestros expresidentes Académicos César Augusto Pantoja, Hernando Groot, Pablo Gómez Martínez, Jorge Cavelier Gaviria y Efraim Otero-Ruiz, con quienes me tocó en suerte trabajar 12 años consecutivos, cerca de ellos a través de mi cargo de Coordinardor de la Comisión Permanente de Biblioteca y Publicaciones y de la Revista MEDICINA que se ha venido publicando sin interrupciones dentro de un compañerismo ejemplar; además de otras distinciones operativas que me inducen a expresar gratitud.

    Ahora, además, como Secretario de la Coporación por elección unánime de la Asamblea hace dos años, he sido testigo ático de una intensa, inteligente e inagotable actividad que nuestro Presidente Académico Juan Jacobo Muñoz Delgado quien siempre con el visto bueno de la Junta Directiva, mediante un acelerado ritmo de trabajo se impuso la tarea de convertir en realidad inmediata tan anhelada y necesaria idea.

    En efecto, la nueva sede fue inaugurada oficialmente el día 2 de septiembre de 1993.

    Este Editorial es la constancia escrita de tal febril actividad que para proporcionar evidencia a los lectores de “MEDICINA” resumo en breves incisos que muestran el tránsito a un estado con superávit de excepción para esta clase de instituciones:

    1. Terminación de la obra ya iniciada de la remodelación arquitectónica, tanto exterior de seguridad y aspecto como interior con suficientes y modernas instalaciones.

    2. Cerramiento total con altas y elegantes rejas metálicas y doble portería por la calle 69 y la carrera 7a.

    3. Aparcadero lujosamente adoquinado, amplio y seguro para 30 automóviles.

    4. Decoración interior estéticamente consultada, bien lograda en cortinas y clásicas lámparas de cristal obsequiadas por conocidos académicos. Un par de originales urnas precolombianas en el hall de entrada.

    5. Zona social doble, amplia

  8. Vajilla para gastronomía oriental

    OpenAIRE

    Desojo, Marina; Okumatsu, Kathya; Ramírez, Melisa

    2015-01-01

    El equipo de diseño realizó tres sets: un set teishoku (platos calientes), compuesto por cuencos básicos, por un plato principal, por un hashiokis (apoya palillos) y por una jarra para salsa de soja; un set sake, compuesto por un pocillo de 30 ml (uno por persona), por una jarra de 150 ml y por una bandeja; y un set sushi, compuesto por una bandeja para piezas de sushi (para dos personas), por un hashioki (apoya palillos), por una jarra para salsa soja, por un platillo para gari (je...

  9. PLATAFORMA PARA LA VENTA DE VIDEOJUEGOS DIGITALES PARA PC

    OpenAIRE

    Gómez-Eguílar, Javier

    2013-01-01

    A lo largo del trabajo vamos a exponer nuestra propia idea de negocio de una nueva empresa, llamada GAMERINET, que se dedique a la venta de videojuegos de ordenador en descarga digital a través de nuestra web. Para ello vamos a ver una breve introducción a este sector de negocio y su historia, haremos un análisis de las condiciones actuales del sector, a través del análisis del entorno específico (5 Fuerzas de Porter) y del análisis del entorno general (Análisis PEST). Posterio...

  10. TRABALHAR PARA ESTUDAR / ESTUDAR PARA TRABALHAR: REALIDADE E POSSIBILIDADES

    Directory of Open Access Journals (Sweden)

    Janes Siqueira

    2011-07-01

    Full Text Available O trabalho que apresentamos é parte da pesquisa com os estudantes das licenciaturas e da pedagogia da Universidade de Santa Cruz do Sul-UNISC-RS-Brasil. Este está inserido na linha de pesquisa: educação, trabalho e emancipação. Queremos compreender, à luz do materialismo histórico e dialético e das categorias da crítica da economia política, os significados atribuídos pelos estudantes universitários ao fenômeno trabalho e estudo. É uma pesquisa preferentemente qualitativa de natureza dialética. Para Marx, a essência da realidade humana reside no trabalho, mas a fonte de toda a riqueza está na natureza. Logo, trabalho, natureza e sociedade estão em relação dialética. Trabalho, portanto, é a ideia central articuladora, e natureza e sociedade devem ser estudadas em conexão com o trabalho. Marx trata o trabalho, no modo de produção capitalista, como impedimento ao desenvolvimento humano. Propõe o mesmo como um ato de criação e auto-expressão humana que não deve ter um valor. A compreensão dessa premissa é necessária para que os trabalhadores possam significar e ressignificar o trabalho para além da ideologia dominante. Algumas categorias aparecem como relevantes para a análise: condições de trabalho e de estudo, necessidade de formação, predominância do trabalho sobre o estudo, dificuldade de conciliar tempo de estudo e de trabalho. Na relação com o objeto de estudo, ressaltaremos a crise estrutural do capital, a desregulamentação das leis do trabalho e sua flexibilização e as contradições entre trabalho e estudo bem como quais possibilidades emancipatórias são visualizadas ou sonhadas pelos trabalhadores-estudantes. PALAVRAS-CHAVE: contradições entre trabalho e educação, condições e significados, realidade e possibilidades.

  11. Una nueva estrategia para competir

    OpenAIRE

    Cremer, Rodolfo

    2014-01-01

    A la luz de los cambios que están ocurriendo, vemos como las estrategias básicas para competir (1) diferenciación, (2) liderazgo en precios, y (3) alta segmentación, empiezan a quedarse cortas si pretendemos aplicarlas en un horizonte de largo plazo, en donde el corto plazo presenta una alta e impredecible turbulencia en un ambiente hipercompetitivo, y las ventajas competitivas antes “sostenibles en el tiempo” son destruidas en el fiero mundo de la competencia. Las maravillas tecnológicas ...

  12. Medicamentos potencialmente inapropriados para idosos

    OpenAIRE

    Gorzoni,Milton Luiz; Fabbri,Renato Moraes Alves; Pires,Sueli Luciano

    2012-01-01

    OBJETIVO: Comparar PRISCUS com Beers-Fick na detecção de medicamentos potencialmente inapropriados (MPI) para idosos à primeira consulta ambulatorial geriátrica. MÉTODOS: Análise retrospectiva de prontuários por PRISCUS e Beers-Fick adaptados à farmacopeia brasileira, comparando-se o encontro de MPI à primeira consulta ambulatorial geriátrica pelos dois critérios. RESULTADOS: Idade média de 77,4 ± 7,7 anos, 64 mulheres e 36 homens, consumo médio de 3,9 ± 2,5 fármacos. Este estudo encontrou si...

  13. Nuevo nombre para antiguos conceptos

    Directory of Open Access Journals (Sweden)

    Alexandra Ayala Marín

    2015-01-01

    Full Text Available El periodismo cívico, público o comunitario son tres denominaciones para un mismo fenómeno surgido en los E.U. y que va difundiéndose por América Latina, precisamente donde su esencia (el protagonismo y la participación real del perceptor en los procesos comunicacionales surgió y se desarrolló hace décadas. La autora al entrevistar a Carlos Alvares Teijeiro, uno de los estudiosos del tema, ofrece algunos aspectos de esta (nueva? práctica periodística que tiene que ver con la democracia

  14. Turismo accesible, turismo para todos

    OpenAIRE

    Núñez Bello, Miguel

    2012-01-01

    El sector turístico representa el 10,2 por ciento del Producto Interior Bruto (PIB) y el 11,5 por ciento del empleo en España. La actividad turística y sus grandes beneficios han posibilitado que nuestro país sea destino y referencia en este sector. ¿Lo es también en turismo accesible? El turismo para todos no puede ser excluyente bajo ninguna razón o circunstancia. Amparado en el derecho y la Constitución, la sensibilidad que se percibe no puede quedar solo en buenas palabras sino en actuaci...

  15. Ligantes base agua para pulvimetalurgia

    OpenAIRE

    Monterde Gascón, M. Carmen

    2010-01-01

    La problemática de salud laboral y medioambiental que presenta el tricloroetileno (TCE: R40, 45, 52/53) ha condicionado en gran medida los esfuerzos realizados para su sustitución. Uno de los procesos afectados es la mezcla con ligantes, en donde el tricloroetileno se utiliza como disolvente del ligante (ácido esteárico, HSt (CH3 (CH2)16COOH). Una alternativa continuista consiste en cambiar el disolvente manteniendo el mismo ligante, alternativa que se ha hecho realidad e...

  16. Mandevilla (Apocynaceae, Mesechiteae para Brasil

    Directory of Open Access Journals (Sweden)

    J. Francisco Morales

    2005-01-01

    Full Text Available Se describen dos nuevas especies de Mandevilla (Apocynoideae, Mesechiteae subgénero Exothostemon, endémicas de Brasil. Mandevilla abortiva se encuentra relacionada con un grupo de especies conformado por M. huberi, M. obtusifolia y M. pachyphylla, discutiéndose sus afinidades con esos taxones. Mandevilla clandestina ha sido confundida por largo tiempo con M. scabra, diferenciándose por sus flores más pequeñas. Se incluyen descripciones completas, ilustraciones y el listado de especímenes examinados para ambos taxones.

  17. Pequenos para idade gestacional: fator de risco para mortalidade neonatal

    Directory of Open Access Journals (Sweden)

    Almeida Márcia Furquim de

    1998-01-01

    Full Text Available OBJETIVO: Estudar as variáveis contempladas na Declaração de Nascimento (DN como possíveis fatores de risco para nascimentos pequenos para a idade gestacional (PIG e o retardo de crescimento intra-uterino como fator de risco para a mortalidade neonatal. MATERIAL E MÉTODO: As variáveis existentes na DN foram obtidas diretamente de prontuários hospitalares. Os dados referem-se a uma coorte de nascimentos obtida por meio da vinculação das declarações de nascimento e óbito, correspondendo a 2.251 nascimentos vivos hospitalares, de mães residentes, ocorridos no Município de Santo André, Região Metropolitana de São Paulo, no período de l/1 a 30/6/1992, e aos óbitos neonatais verificados nessa coorte. RESULTADOS: Obteve-se a proporção de 4,3% de nascimentos PIG, significativamente maior entre os recém-nascidos de pré-termo e pós-termo, entre os nascimentos cujas mães tinham mais de 35 anos de idade e grau de instrução inferior ao primeiro grau completo. Os recém-nascidos PIG apresentam maior risco de morte neonatal que aqueles que não apresentavam sinais de retardo de crescimento intra-uterino. CONCLUSÕES: Em áreas com menor freqüência de baixo peso ao nascer, é importante investigar a presença de retardo de crescimento intra-uterino entre os nascimentos prematuros e não apenas nos nascimentos de termo. O registro da data da última menstruação (ou da idade gestacional em semanas não agregadas na DN facilitaria a detecção de PIGs na população de recém-nascidos.

  18. Para onde vai a Geografia?

    Directory of Open Access Journals (Sweden)

    Angélica Karina Dillenburg Horii

    2015-12-01

    Full Text Available O presente artigo aborda a evolução da Geografia enquanto pensamento científico, analisando seu objeto de estudo e suas categorias de análise durante todo o percurso da criação desse saber. Observa primeiramente a formação da Geografia Clássica, que teve seus princípios já instituídos na Antiguidade com Ptolomeu e Estrabão, desdobrando-se no período Iluminista com Ritter e Humboldt que fornecerão uma nova temporalidade a essa ciência. Atinge seu ápice na Modernidade Industrial com a racionalidade de Kant, onde Ratzel e La Blache utilizarão o determinismo e o possibilismo para constituir um discurso científico para a Geografia. Finaliza apontando a nova compreensão do mundo, conhecida como pós-modernismo por David Harvey (1992 ou por Milton Santos (1996 como Globalização, que junto a outros geógrafos e pesquisadores, indicam caminhos de análise dessa ciência na compreensão do seu objeto de estudo. Um diálogo entre os autores na construção do pensamento geográfico.

  19. Aprender para la vida o para el placer

    Directory of Open Access Journals (Sweden)

    Diobaldo César Heredia Gutiérrez

    2011-07-01

    Full Text Available El proceso enseñanza aprendizaje, se corresponde con un sistema comunicativo por excelenciaque requiere una alta dosis de amor que garantice el disfrute o goce de los participantes, enun interactuar de búsqueda y descubrimiento satisfactorio. Para imprimirle un alto grado de calidad, esdeseable la participación de estudiantes y docentes más emprendedores y críticos y menos académicoso dependientes, por ello el aprendizaje autónomo es clave, el logro u objetivo, entonces, es estudiantesque aprendan como si fueran a enseñar y docentes investigadores, proactivos y expertos en las materiasque enseñan.

  20. Infraestructura para laboratorios de acceso remoto

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    López Luro, Francisco

    2009-01-01

    Full Text Available Las tecnologías de Internet permiten el uso de sistemas de software distribuido para el acceso en forma remota a laboratorios físicos y virtuales, para llevar a cabo actividades de investigación experimental a distancia. A partir de los marcos teóricos que definen los estructurantes de los laboratorios, los implementadores de laboratorios de acceso remoto deben diseñar y desarrollar arquitecturas de servicios que permitan un acceso flexible y controlado. Este trabajo define una infraestructura para la implementación de aplicaciones para el acceso remoto a laboratorios físicos y virtuales y para la gestión de los mismos. Se presentan conceptos que permiten extender la modalidad tradicional de conexión con un dispositivo, para llevar adelante actividades prácticas de laboratorio colaborativas y concurrentes.

  1. Internet como instrumento para la Yihad

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    Alfonso Merlos García

    2006-01-01

    Full Text Available Las extraordinarias ventajas que ofrece Internet lo han convertido en un instrumento clave y dinámico en la estrategia de los yihadistas. Los medios de comunicación, la clase política y las agencias de seguridad e información han tendido a concentrar sus esfuerzos en la neutralización del ciberterrorismo sin prestar suficiente atención a los múltiples usos de Internet que están haciendo los neosalafistas: para la propaganda y para la guerra psicológica, para el reclutamiento y para la financiación, para la documentación y para la planificación de atentados. Las democracias deberían considerar el coste que tendrá la derrota frente al movimiento yihadista globalizado en la batalla por el ciberespacio

  2. Leasing: una alternativa de financiamiento para PYMES

    OpenAIRE

    Bedjan, María Belén

    2008-01-01

    En la actualidad las pequeñas y medianas empresas encuentran dificultades para acceder a las líneas tradicionales de créditos bancarios. Por otro lado las empresas necesitan actualizarse constantemente para poder ser competitivas en el mercado. Es aquí donde el leasing nace como una alternativa de financiación para las PyMEs. Este trabajo pretendió demostrar la conveniencia financiera del leasing con respecto a los préstamos bancarios para la compra de maquinarias agrícolas ...

  3. Paisajes para un desarrollo sustentable y participativo

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    Rafael Mata Olmo

    2014-11-01

    Para terminar, el texto recoge una experiencia de proyecto territorial de paisaje, la del Plan Insular de Menorca (Islas Baleares, España, aprobado en 2003. Se sintetizan sus determinaciones sobre la protección de determinados terrenos por sus altos valores paisajísticos, sus directrices para que las políticas sectoriales (turismo, agricultura, infraestructuras, etc. incorporen criterios paisajísticos, y sus iniciativas para la gestión y mejora del paisaje y para el fomento del acceso público a su contemplación y disfrute.

  4. Adesao ao guia alimentar para populacao brasileira

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    Eliseu Verly Junior

    2013-12-01

    Full Text Available OBJETIVO : Analisar a adesão ao Guia Alimentar para População Brasileira. MÉTODOS : Amostra composta por participantes do Inquérito de Saúde de São Paulo (n = 1.661 que preencheram dois recordatórios de 24 horas. Foi utilizado modelo bivariado de efeito misto para a razão entre o consumo de energia do grupo de alimentos e o consumo calórico total. A razão estimada foi utilizada para calcular o percentual de indivíduos com consumo abaixo ou acima da recomendação. RESULTADOS : Pelo menos 80,0% da população consome abaixo do recomendado para: leite e derivados; frutas e sucos de frutas; e cereais, tubérculos e raízes; aproximadamente 60,0% para legumes e verduras; 30,0% para feijões; e 8,0% para carnes e ovos. Adolescentes apresentaram a maior inadequação para legumes e verduras (90,0%, e o estrato de maior renda foi associado à menor inadequação para óleos, gorduras e sementes oleaginosas (57,0%. CONCLUSÕES : Foi observado consumo inadequado dos grupos de alimentos relacionados com aumento do risco de doenças crônicas.

  5. Acondicionamiento físico para rugby

    OpenAIRE

    Jiménez Bueno, Josué

    2013-01-01

    Cualquier profesional de las Ciencias del Deporte sabe de la importancia del acondicionamiento físico específico para cada deporte. El problema surge cuando se necesita este tipo de información para un deporte minoritario como el rugby. Pese a este hecho y cada vez más, el rugby en España se desarrolla y adquiere más adeptos, por eso considero que debe haber información en nuestro idioma para cualquier profesional que se acerque a este deporte y para cualquiera que necesite información sobre ...

  6. Entre velos: Maya para contrabajo

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    Rosa María Rodríguez Hernández

    2014-01-01

    Full Text Available Maya para contrabajo se materializa a partir de una imagen de Pepe Romero, cuyo texto interpreta a La decadencia de la mentira de Oscar Wilde. La estructura de Maya es binaria, especular y asimétrica; su poética obedece al juego verdad/mentira que subyace en la obra artística y en la vivencia del artista. Maya trae a la memoria las voces de los Upanishad, Schopenhauer, Shakespeare y Beethoven, influencias éstas en la obra de Wagner y, todas ellas, en la de Eliot. Los aspectos gestuales y visuales de Maya entrelazan con la danza de Pina Bausch y con la retórica (hypotiposis.

  7. para su puesta en marcha

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    Sergio Franco Maass

    2004-01-01

    Full Text Available Los sistemas de información geográfica (SIG tienen una gran aplicación en la gestión municipal; permiten cumplir con dos objetivos fundamentales: el registro de información territorial y el análisis de problemas territoriales específicos. Con el fin de determinar la viabilidad de este tipo de tecnologías en el ámbito municipal, se enfrentó el problema de la localización de instalaciones para la disposición final de residuos sólidos urbanos en el municipio de Toluca, Estado de México. Se identifican ciertos aspectos que limitan la práctica de los SIG: la diversidad entre los municipios, los problemas administrativos, las deficiencias de la información y la carencia de recursos humanos, técnicos y financieros.

  8. MERCADEO SOCIAL PARA LA SALUD

    Directory of Open Access Journals (Sweden)

    Renata Seidel

    2015-01-01

    Full Text Available Se ofrece un amplio análisis sobre la industria electoral, recordando que un candidato a presidente es "un producto para la venta". Se Desmenuzan las estrategias utilizadas en el plebiscito chileno,las elecciones norteamericanas con el NO a BUSH. El Mercadeo Social es una nueva metodología utilizada en proyectos de desarrollo a nivel de campo por ello se hace un esclarecimiento y clarifica el vínculo con la comunicación. Se agrega temas como: Los modelos de recepción de mensajes cuyos marcos conceptuales y metodologías aún no se han adaptado al potencial de esta línea de trabajo.Se analiza la agonía de las radios mineras en Bolivia en la que 42 años de historia y heroísmo se desmoronan.

  9. Una minga para el posdesarrollo

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    Arturo Escobar

    2011-01-01

    Full Text Available El artículo sintetiza algunas conclusiones a las que han llegado movimientos sociales y académicos en las últimas dos décadas al reflexionar sobre la globalización y sus implicaciones; el modelo dominante, basado en las nociones de "desarrollo" y "modernidad", ha entrado en crisis. Por lo tanto, se hace necesario avanzar en una transición cultural que se pueda comprender como un cambio de época y no sólo como una época de cambios. Para llevar a cabo esta transformación, se deben resolver las con-tradicciones existentes entre el neodesarrollismo y el postdesarrollo, por supuesto, a favor de éste último.

  10. Profesiones emergentes para los comunicadores

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    Manuel Ortiz Marín

    2015-01-01

    Full Text Available Señala el autor que en México se ha iniciado una lenta pero segura transformación del campo profesional de la comunicación. La carrera de Comunicación ocupa el octavo lugar entre las carreras más demandadas en la Educación Superior de México, que con la fuerte avalancha tecnológica y el surgimiento de la apertura de nuevos espacios sociales y político-económicos han impulsado otras formas de hacer comunicación. Dos son los campos más opcionados: medios de comunicación masiva, y lo organizacional y la publicidad, aunadas al surgimiento del marketing político. Hoy se demanda del profesional nuevas y dinámicas competencias para enfrentar escenarios laborales antes no explorados.

  11. Comunicadores para la informaclon ambiental

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    Luz Marina Cabrera Morillo

    2013-07-01

    Full Text Available La Red Colombiana de Formación Ambiental en convenio con la Corporación Autónoma de los Valles del Sinú y del San Jorge y con el apoyo del Politécnico Grancolombiano, desarrolló un diplomado en Periodismo Ambiental en la ciudad de Montería, Departamento de Córdoba. La experiencia que ha contribuido a fortalecer la construcción de la cultura ambiental en la región; le ha permitido mayor visibilidad a los proyectos de la Corporación y facilitado la participación ciudadana. Este documento presenta el contexto de la formación de los comunicadores para la información ambiental, las características del diplomado y establece algunos de los logros alcanzados.

  12. Tipologia para a contabilidade ambiental

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    Nazlhe Faride Chein Schekaiban

    2007-06-01

    Full Text Available Este artigo revê a visão, as propostas e o desenvolvimento da contabilidade ambiental, refletindo sobre suas implicações, com a finalidade de descobrir e encontrar sua importância e situação. Para se chegar a esse resultado foi preciso realizar uma revisão epistemológica moldada e processo reflexivo de sustentabilidade e da aproximação ao usuário, da percepção da realidade contábil no México e da gerência interna das organizações. As conclusões mostram a contabilidade ambiental no México fora da re-alidade operativa do modelo contábil regional, aumentando a importância de se criar uma cultura capaz de examinar o controle da missão deste tipo de contabilidade.

  13. Ética para gobernar. lecciones básicas para un gobierno justo

    OpenAIRE

    Diego Bautista, Oscar

    2013-01-01

    Ética para gobernar. Lecciones básicas para un gobierno justo. Tiene por propósito fomentar una cultura ética en os servidores públicos que contribuya a un cambio de conducta hacia un buen gobierno y que siente las bases para prevenir y controlar la corrupción

  14. Trabalhar para estudar/estudar para trabalhar: realidade e possibilidades

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    Janes Teresinha fraga Siqueira

    2011-01-01

    Full Text Available O trabalho que apresentamos é parte da pesquisa, ainda não concluída, com os estudantes das licenciaturas e da pedagogia da Universidade de Santa Cruz do Sul- UNISC-RS-Brasil. Este está inserido na linha de pesquisa: educação, trabalho e emancipação do mestrado em educação desta Universidade. Queremos compreender, à luz do materialismo histórico e dialético e das categorias da crítica da economia política, os significados atribuídos pelos estudantes universitários ao fenômeno trabalho e estudo. É uma pesquisa preferentemente qualitativa de natureza dialética. Para Marx, a essência da realidade humana reside no trabalho, mas a fonte de toda a riqueza está na natureza. Logo trabalho, natureza e sociedade estão em relação dialética. Trabalho, portanto, é a ideia central articuladora, e natureza e sociedade devem ser estudadas em conexão com o trabalho. Marx trata o trabalho, no modo de produção capitalista, como um impedimento ao desenvolvimento humano. Propõe omesmo como um ato de criação e auto-expressão humana que não deve ter um valor. A compreensão dessa premissa é necessária para que os trabalhadores possam significar e ressignificar o trabalho para além da ideologia dominante. Algumas categorias aparecem como relevantes para a análise: condições de trabalho e de estudo, necessidade de formação, predominância do trabalho sobre o estudo, dificuldade deconciliar tempo de estudo e de trabalho. Na relação com o objeto de estudo, ressaltaremos a crise estrutural do capital, a desregulamentação das leis do trabalho e sua flexibilização e as contradições entre trabalho e estudo bem como quais possibilidades emancipatórias são visualizadas ou sonhadas pelos trabalhadores estudantes.Resume Ce travail constitue une partie de la recherche entreprise avec les étudiants du cours de pédagogie de l´Universidade de Santa Cruz do Sul – UNISC – RS – Brésil. Il est intégré dans le champ de

  15. Sistema computadorizado para exames de audiometria

    OpenAIRE

    Francisco Hideki Imai

    1993-01-01

    Alguns aspectos relevantes da fisiologia da audição e da audiometria são apresentados neste trabalho, propondo-se um projeto de um sistema computadorizado para audiometria clinica. Neste contexto, e apresentada uma arquitetura eletrônica de um sistema mínimo para a realização de testes audiometricos baseados em computador PC.

  16. Programa de conservacion para aves migratorias neotropicales

    Science.gov (United States)

    Deborah Finch; Marcia Wilson; Roberto Roca

    1992-01-01

    Mas de 250 especies de aves terrestres migran a Norte America durante la epoca reproductiva para aprovechar los sistemas templados. No obstante, las aves migratorias neotropicales pasan la mayor parte de su ciclo de vida en los habitat tropicales y subtropicales de paises latinoamericanos y caribefios donde viven en una asociacion cercana con las aves residentes. Para...

  17. Recursos para un aprendizaje significativo

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    Juan LARA GUERRERO

    2009-11-01

    Full Text Available RESUMEN: Partimos del supuesto de que una de las cuestiones que más preocupa al profesorado en su práctica educativa radica en que el aprendizaje de sus alumnos sea significativo. Somos conscientes de que, para conseguir este tipo de aprendizaje, es necesario introducir una serie de cambios en la dinámica de la clase. Comenzamos diferenciando el aprendizaje maquinal del significativo. Continuamos aclarando una confusión muy extendida entre muchos educadores, que creen que el aprendizaje por recepción es repetitivo y que el efectuado por descubrimiento es forzosamente significativo. Posteriormente, planteamos una serie de interrogantes para aclarar algunas cuestiones que le pueden ser útiles a los educadores en su práctica cotidiana. Terminamos presentando la estrategia de organización, que cuenta con dos instrumentos, a nuestro juicio muy eficaces, para ayudar a los estudiantes, a aprender de manera significativa: los mapas conceptuales y la técnica heurística V.ABSTRACT: We start from the assumption that one of the questions that most worry the teaching staff in its educational practice consists in that its pupils' learning is significant. We are aware that, to obtain this kind of learning, it is necessary to introduce a series of changes in the classroom dynamics. We begin by making a distinction between mechanical and significant learning. We continué making clear a very extended confusión amongst many teachers, who believe that learning by reception is repetitive and that the one done by serendipity is necessarily significant. Afterwards, we créate a series of questions to clarify with some answers that can be useful to teachers in their everyday practice. We finish showing the organization strategy, which has two instruments, that in our opinión are very effective, to help students learning in a significant way: conceptual maps and the V heuristic technique.RÉSUMÉ: Nous partons de la supposition de qu'une des questions que

  18. El Ensayo, Para Formar Profesionales Reflexivos

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    Nestor Perico-Granados

    2015-07-01

    Full Text Available El presente artículo es producto de investigación, como resultado de la reflexión hecha a lo largo de muchos años de experiencia profesional y docente en diferentes universidades estudiando, redactando y evaluando ensayos. Presenta la importancia del ensayo como instrumento y dispositivo de la formación en la educación y especialmente se hace hincapié en la incidencia que tiene cuando se trabaja de manera apropiada, para prestar un servicio en la formación reflexiva. Se dan unas pautas para una aproximación a su definición y precisa los elementos fundamentales y otros complementarios para su elaboración. Desarrolla un primer proceso para escribir un ensayo, a través de la jerarquización de las ideas. Finalmente, se proponen unas conclusiones que pueden ser útiles para quienes quieran escribir ensayos.

  19. Periodistas para la era digital

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    Fernando Villalobos G.

    2014-12-01

    Full Text Available La formación de los periodistas del siglo XXI en la era digital se concibe como un reto y el mayor desafío. Los medios digitales demandan especialización y dominio de las nuevas tecnologías. Las universidades, principales gestores de este cambio, en la sociedad del conocimiento, requieren trabajar en la reformulación de nuevos pensum y en tres terrenos fundamentales: el perfil del egresado, el estilo pedagógico y el nuevo modo de relacionarse con el mundo exterior. Se necesita de una oferta académica referida al ciberperiodismo y a la cibercomunicación. La profesión periodística, y específicamente la formación de los comunicadores registra cambios importantes debido a las nuevas tecnologías, ahora el aula es el mundo globalizado e interconectado por la gran autopista de la información, por ello, la formación del comunicador social, demanda renovadas prácticas educativas. Las universidades deben repensar el papel que están obligadas a desempeñar, reformular los pensum académicos y ofertar la cibercomunicación y el ciberperiodismo para estar al día de las grandes transformaciones.

  20. Residencia para familias - Anglet (Francia

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    Hébrard, J. R.

    1971-11-01

    Full Text Available This residential hotel has 806 beds, which can be increased to 1,100 by adding some double beds. Its size and colour blends well with the picturesque surrounding, known as «Chambre d'Amour». The hotel involves 120 large apartments, and 50 smaller one, as well as 25 rooms for the staff, and flats for the manager and other senior officials. There is a hall, large living room, bar, rooms for playing games, nursery, and an additional hostel with 40 flats and staff rooms. The design is of a linear, continuous style, emphasizing its horizontal extension, though contrast is provided by a higher block, housing the vertical circulation facilities.Con un total de 806 plazas hoteleras, ampliables a 1.100 (si se utilizan literas, este conjunto, por su volumen y color se integra en el pintoresco paisaje del paraje conocido por «Chambre d'Amour». Comprende: 120 apartamentos; 50 más pequeños; 25 habitaciones para empleados; los apartamentos del director, gobernanta y recepcionistas; las zonas de vida en común: hall, salón, bar, sala de juegos y guardería; un albergue con 40 apartamentos; y las dependencias de la administración. Presenta un volumen lineal y continuo, modelando una composición de ritmo horizontal predominante, a la que le imprime gran variedad el cuerpo vertical de hormigón visto que contiene las circulaciones verticales.

  1. Una red para la gente

    Directory of Open Access Journals (Sweden)

    Raúl Trejo Delarbre

    2004-02-01

    Full Text Available La próxima Cumbre Mundial de la Sociedad de la Información ha revitalizado, en numerosos países, el debate acerca de las nuevas tecnologías de la comunicación y los usos que pueden tener. Lamentablemente en México hemos estado casi del todo ajenos a esa intensa, extensa y en otras latitudes fructífera discusión. Ni los especialistas interesados en estos temas, ni la sociedad que es a la postre beneficiaria o damnificada según sea el empleo de tales tecnologías, ni los organismos del Estado a cargo de tales asuntos, han propiciado la reflexión colectiva que nos podría permitir tanto afinar las posiciones de nuestro país rumbo a la cumbre de Ginebra y Túnez como deliberar, en ese contexto, acerca de lo mucho que nos falta para tener un país auténticamente imbricado en la construcción de una auténtica Sociedad de la Información.

  2. Resdencia para ciegos en Unterdambach

    Directory of Open Access Journals (Sweden)

    Staber, Johann

    1978-08-01

    Full Text Available This building is composed in different bodies, each performing a distinct function, situated in a beautiful wooded landscape. The four storeys above ground, plus one basement of the main building, enclose the rooms for the blind residents, the common areas and mechanical installations. The front of this body, directly accesible from the road, contains a large meeting hall that opens to a tiered terrace providing stepped sitting in the outdoors, towards the back of the building. Between the latter and the main body, a small chapel completes the facilities. The construction in reinforced concrete in sober lines is harmonically integrated into the surrounding environment.

    Este edificio está constituido por diversos cuerpos de distintas funciones, enclavados en un hermoso y arbolado paisaje. El volumen principal alberga, en sus cuatro plantas sobre rasante, más un sótano, las habitaciones para los invidentes, los locales comunes y las instalaciones del edificio. En la parte anterior, directamente accesible desde la calle, se ha dispuesto un amplio salón de actos que tiene su complemento en una terraza, con gradas de asientos al aire libre, situada en la zona trasera. Entre esta última y el cuerpo principal, una pequeña capilla completa el número de las instalaciones. La construcción, de hormigón armado, queda armónicamente integrada, por su sobriedad de líneas, en el ambiente que la rodea.

  3. Functional Expression of Drosophila para Sodium Channels

    Science.gov (United States)

    Warmke, Jeffrey W.; Reenan, Robert A.G.; Wang, Peiyi; Qian, Su; Arena, Joseph P.; Wang, Jixin; Wunderler, Denise; Liu, Ken; Kaczorowski, Gregory J.; Ploeg, Lex H.T. Van der; Ganetzky, Barry; Cohen, Charles J.

    1997-01-01

    The Drosophila para sodium channel α subunit was expressed in Xenopus oocytes alone and in combination with tipE, a putative Drosophila sodium channel accessory subunit. Coexpression of tipE with para results in elevated levels of sodium currents and accelerated current decay. Para/TipE sodium channels have biophysical and pharmacological properties similar to those of native channels. However, the pharmacology of these channels differs from that of vertebrate sodium channels: (a) toxin II from Anemonia sulcata, which slows inactivation, binds to Para and some mammalian sodium channels with similar affinity (Kd ≅ 10 nM), but this toxin causes a 100-fold greater decrease in the rate of inactivation of Para/TipE than of mammalian channels; (b) Para sodium channels are >10-fold more sensitive to block by tetrodotoxin; and (c) modification by the pyrethroid insecticide permethrin is >100-fold more potent for Para than for rat brain type IIA sodium channels. Our results suggest that the selective toxicity of pyrethroid insecticides is due at least in part to the greater affinity of pyrethroids for insect sodium channels than for mammalian sodium channels. PMID:9236205

  4. Um lugar para a Filosofia?

    Directory of Open Access Journals (Sweden)

    Samir Dessbesel Ferreira

    2010-01-01

    Full Text Available De que modo pode a Filosofia integrar-se às demais disciplinas da grade curricular dos cursos técnicos do IFSul? E como se insere uma disciplina como essa em instituições de ensino que têm tradicionalmente como foco o ensino tecnológico e profissionalizante, como são os Institutos Federais? Primeiramente, a Filosofia poderia contribuir na formação do profissional egresso, desenvolvendo-lhe competências relacionadas ao filosofar, em especial as relacionadas ao raciocínio abstrato e à comunicação, o que poderia vir a fazer a diferença no mercado de trabalho. Assim, os Institutos Federais ofereceriam um ensino de excelência com o objetivo de formar o técnico mais bem qualificado possível ao mercado de trabalho. Todavia, o aparelhamento técnico de nossos jovens, embora essencial para o desenvolvimento do País, não pode apresentar-se como a preocupação prioritária dos educadores, pois é fundamental considerar-se a formação integral da pessoa humana. Qual educação, afinal, queremos? E qual o papel da escola pública em nossa sociedade? O direcionamento unilateral à qualificação profissional pode levar-nos à formação de uma espécie de “superpeão”. A escola não pode ser serva do mercado. Ela tem o papel maior de agente de questionamento e transformação da sociedade. A concepção de Ensino Médio Técnico-Integrado nos parece orientar-se antes para a formação “integral” do cidadão, da pessoa em sua totalidade. O trabalho não é apenas uma relação econômica, mas também ética, política e estética. Deve ser uma forma de realização, de humanização do mundo, e não de coisificação do homem. É sempre possível pensar nossos espaços de educação formal como um compartilhar humano de sentidos, de afetos, de vivências, de posturas, de identidades. A esses espaços deverá a qualificação técnica sempre agregar-se, jamais sobrepor-se.

  5. Nuevos registros de clorofitas marinas para Cuba

    OpenAIRE

    Moreira, A.; Fujii, M. T.; Suárez, A. M.; Wynne, M. J.

    2013-01-01

    A partir de muestras colectadas en la bahía de Cienfuegos y de Santa Lucía (Pinar del Río), se identificaron dos nuevos registros de macroalgas marinas (clorofitas) para Cuba: Cladophora blomquistii C. Hoek y Udotea fibrosa D. S. Littler & M. M. Littler. C. blomquistii se registra por primera vez para la región del Caribe ya que se había consignado solo para lagunas costeras de la Florida, y la parte noreste del golfo de México. Se ofrecen además comentarios sobre la taxonomía, ...

  6. Guión informativo para radio

    OpenAIRE

    Borja Bonilla, Jhonatan M.

    2006-01-01

    El presente trabajo investigativo bibliográfico y práctico, sobre el tema "GUION INFORMATIVO PARA RADIO" tiene como objetivo principal crear una guía tanto para los alumnos de comunicación social como para los comunicadores en la práctica. Después de varias entrevistas realizadas a diferentes comunicadores de las radios, se ha tomado en cuenta que en la ciudad de Cuenca se desconoce la necesidad de trabajar con guiones. Por tal motivo es importante realizar y profundizar en esta tesis sobr...

  7. Propuesta nutricional para un jugador de baloncesto

    OpenAIRE

    Fierro Suero, Sebastián

    2016-01-01

    El objetivo de este trabajo fue aportar una propuesta real de la planificación nutricional de un joven baloncestista amateur. Para lograr este objetivo, por un lado, se ha profundizado en las características del baloncesto y la competición, para entender mejor las recomendaciones nutricionales que dan los diferentes autores para este deporte. Posteriormente, se ha profundizado en el caso concreto del sujeto de estudio. La organización de su temporada y entrenamientos, sus características antr...

  8. Estereoscopio com tela holografica para ver tomografias

    CERN Document Server

    Lunazzi, J J; Magalhaes, D S F

    2010-01-01

    A estereoscopia eh uma tecnica que permite a observacao de imagens tridimensionais, mas estah sempre associada com o uso de algum equipamento especial para visualizacao, como oculos bicolores ou polarizados. Para o uso em aplicacoes medicas o emprego de tais equipamentos pode inviabilizar sua utilizacao durante procedimentos cirurgicos, por exemplo. Neste trabalho apresentamos um novo tipo de estereoscopio que utiliza uma tela holografica para geracao de imagens tridimensionais sem o uso de qualquer equipamento adicional. Apresentamos a descricao do equipamento utilizado e resultados das imagens visualizadas.

  9. Oxitocina: nuevas perspectivas para una droga antigua

    OpenAIRE

    Steven L. CLARK; Kathleen Rice SIMPSON; G. Eric KNOX; Thomas J. GARITE

    2010-01-01

    La oxitocina es el medicamento más comúnmente asociada con la prevención de complicaciones perinatales y recientemente fue incluida por el Instituto para la Administración Medicamentosa Segura (Institute for Safe Medication Practices - ISMP) en una pequeña lista de medicamentos “con alto grado de riesgos”, lo que puede “necesitar salvaguardas especiales para reducir el riesgo de error”. Las recomendaciones actuales para administrar este medicamento son vagas en relación a la indicación, tiemp...

  10. Conferencia educación para todos

    Directory of Open Access Journals (Sweden)

    Lucía Lemos

    2015-01-01

    Full Text Available América Latina tiene 42 millones de analfabetos. La crisis creada por la deuda externa produce fuertes restricciones presupuestarias en todos los sectores. En Tailandia (1990 se realizó la Conferencia Mundial sobre "Educación para Todos" se presentó la nueva visión de encontrar un camino para lograr una educación por todos y para todos.La autora, trata de sintetizar los documentos que circularon en la reunión.

  11. pipetas usadas para I. A.

    Directory of Open Access Journals (Sweden)

    J. Castañeda

    2004-01-01

    Full Text Available La vagina y cerviz de las cerdas son estimuladas físicamente durante la inseminación. Este contacto puede afectar características reproductivas tales como el transporte espermático y el proceso de ovulación. En el presente trabajo se evaluaron desde el punto de vista económico y reproductivo, tres tipos de pipetas utilizadas para I. A. de cerdas de diferente material y forma. Se utilizaron 120 animales multíparos asignados de acuerdo a su orden de entrada al celo, en forma sucesiva a uno de tres grupos experimentales: 1 I. A. mediante pipeta reusable de hule tipo Melrose ( Medata, 2 I. A. con pipeta desechable de punta plástica en espiral y 3 I. A. con pipeta desechable con punta de poliestireno redonda (Medi chimica. No se encontró diferencia (P>0.05 entre los porcentajes de gestación, parición y promedio de lechones nacidos vivos por parto, en el tiempo de aplicación del semen, ni en el volumen del mismo, arrojado por las cerdas en los 10 min. posteriores a la I. A. Los valores promedio fueron de: 91.7%, 86.7%, 10.4 ± 2.8, 7.8 ± 2.6 min. y 10.4 ± 11.3 ml, respectivamente. El análisis de regresión, no mostró significancia en cuanto a paridad en ninguna de las variables estudiadas (P>0.05. Se concluye que las pipetas evaluadas no difieren en su efecto sobre el desarrollo reproductivo de la piara. Sin embargo, la pipeta reusable tipo Melrose ofrece ventaja económica bajo las condiciones del presente estudio

  12. Tratamiento intraparto para la gastrosquisis

    Directory of Open Access Journals (Sweden)

    Rafael Manuel Trinchet Soler

    Full Text Available El tratamiento intraparto de la gastrosquisis es una técnica quirúrgica llevada a cabo durante el nacimiento, bajo el principio de la preservación de la circulación fetoplacentaria, que permite reducir las vísceras herniadas antes de la primera respiración, evita la deglución del aire durante el llanto y minimiza la demora entre el nacimiento y la resolución quirúrgica de esta compleja afección. Se presenta la utilización de esta técnica, por primera vez, en el Centro Territorial de Cirugía Neonatal de Holguín, en un neonato femenino, procedente de la provincia de Santiago de Cuba, nacido por cesárea a las 36 semanas de gestación, e intervenido por un equipo multidisciplinario en la maternidad provincial de Holguín. La corrección del defecto se realizó en los primeros 15 minutos después del nacimiento, antes de cortar el cordón umbilical. La necesidad de apoyo ventilatorio fue menor de 24 horas, y se inició la vía oral en los primeros 3 días después del procedimiento. Al quinto día se observó el cierre total del defecto sin necesidad de suturas. Con la práctica del procedimiento Simil EXIT (similar al extra utero intrapartum treatment de sus siglas en inglés para gastrosquisis, se logró la corrección inmediata de un defecto complejo de la pared abdominal, que es de alta morbilidad y mortalidad, y permitió la incorporación temprana de la paciente a una vida normal, sin huella quirúrgica y sin complicaciones.

  13. Arquitectura para transmisores HART de alta exactitud

    National Research Council Canada - National Science Library

    Efrain Tellez, Deivid; Barandica Lopez, Asfur; Charry Rodriguez, Edgar; Ramirez Beltran, Jorge

    2014-01-01

    Los transmisores 4-20 mA de alta exactitud generalmente utilizan procesamiento digital de senales para compensar y calibrar su salida, debido a esto, el consumo de corriente esta cerca del limite de los 4 mA...

  14. Elementos para la consultoria en empresas familiares

    National Research Council Canada - National Science Library

    Lozano Posso, Melquicedec

    2009-01-01

    Este articulo se ubica en el campo de la consultoria en empresas familiares. El proposito principal es exponer un marco general de actuacion para el consultor que incursiona en la intervencion profesional con este tipo de empresas...

  15. Regulaciones para el transporte de sustancias infecciosas

    OpenAIRE

    Casquero, José

    2005-01-01

    Para el propósito de transporte, se define como sustancia infecciosa, aquellas que son conocidas o razonablemente esperadas que contengan patógenos (bacterias, virus, rickettsias, parásitos, hongos, y priones)

  16. Metrica para la sociedad del conocimiento

    National Research Council Canada - National Science Library

    Torres Citraro, Leonidas

    2012-01-01

    .... Conocer a esos paises lideres, segun lo senalan las clasificaciones y rankings de organismos multilaterales y del sector privado, es una necesidad para los planificadores y autoridades del mundo...

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2015-07-01

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

  18. Un almuerzo para llevar saludable (Packing Smart)

    Centers for Disease Control (CDC) Podcasts

    2011-08-22

    En este podcast para niños, los chicos de Kidtastics hablan sobre almuerzos creativos para llevarse a la escuela, que ayuden a mantenerse con energía el resto del día.  Created: 8/22/2011 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 1/3/2012.

  19. Curvas de crescimento para codornas de corte

    Directory of Open Access Journals (Sweden)

    Eduardo Silva Cordeiro Drumond

    2013-10-01

    Full Text Available Objetivou-se com este trabalho comparar modelos não lineares para descrever o crescimento de codornas de corte machos e fêmeas do nascimento ao 42° dia de idade. Foram utilizados 24.679 registros de peso corporal de codornas de corte da linha fêmea LF1, pertencente ao Programa de Melhoramento de Codornas da UFVJM, em Diamantina, MG. As codornas de três gerações sucessivas foram pesadas a cada sete dias (nascimento, 7, 14, 21, 35 e 42 dias de idade. Os modelos de Brody, von Bertalanffy, Richards, Logístico e Gompertz foram ajustados ao conjunto de dados observados. Os parâmetros dos modelos foram estimados, para machos e fêmeas separadamente, pelo algoritmo de Gauss Newton, utilizando-se o procedimento NLIN do SAS. Os critérios utilizados para escolha do modelo de melhor ajuste da curva de crescimento foram o coeficiente de determinação (R², o desvio padrão assintótico (DPA, o desvio médio absoluto dos resíduos (DMA e o índice assintótico (IA. Dos cinco modelos utilizados, apenas o modelo de Richards não apresentou convergência, tanto para machos como para fêmeas. O menor valor para o índice assintótico (IA foi observado para o modelo de Gompertz em machos (26,57 e o Logístico para fêmeas (25,02, indicando serem estes os modelos que mais se ajustaram aos dados.

  20. Un nuevo horizonte para el desarrollo africano

    OpenAIRE

    Guimón de Ros, José

    2002-01-01

    La presentación oficial de la Nueva Alianza para el Desarrollo de África (NEPAD), en julio de 2001, ha generado grandes expectativas. Aunque hasta la fecha los resultados hayan sido en cierta medida decepcionantes, y a pesar del largo camino todavía por recorrer, ha mejorado sustancialmente el marco institucional y el rango político de la propuesta africana en el sistema internacional. Recientemente han tenido lugar acontecimientos importantes para el NEPAD como las eleccion...

  1. De tu Casa para el Mundo

    OpenAIRE

    Garcia Torres, Rolando; Treviño Rodriguez, Jose R.; Castillo Perez, Ana K.; Aguilar Guillen, David

    2017-01-01

    Es un video en el cual se busca conscientizar a la población mexicana, con un enfoque hacia los adultos jóvenes, para que comiencen a tener en cuenta su huella de carbono y empiecen a ahorrar energía. Se dan tips para el mejor uso de energía al desconectar electrodomésticos, mantenerlos en buen estado y preferir productos que cuenten con una mayor eficiencia energética.

  2. Páginas web para el aprendizaje

    Directory of Open Access Journals (Sweden)

    Isabel ÁLVAREZ

    2016-04-01

    Full Text Available Este artículo plantea la construcción de paginas web como vehículo para facilitar la integracion de las tecnologias de la informacion y la comunicacion en el aula para futuros maestros. El término Página Web Coherente enfatiza la utilización de páginas cuyo objetivo principal es promover el aprendizaje siguiendo un proceso colaborativo, una estructura integradora y un contenido educativo.

  3. Amendoins silvestres para uso ornamental.

    Directory of Open Access Journals (Sweden)

    Renato Ferraz de Arruda Veiga

    2003-06-01

    Full Text Available Algumas espécies silvestres de amendoim (Arachis spp. gênero Arachis L. (Fabaceae, vêm sendo utilizadas como forração em jardins no Brasil, porém todas com pouca variabilidade já que a distribuição do germoplasma é feita sempre pelos mesmos acessos4. Por outro lado, inúmeras coletas têm sido realizadas, particularmente pela Embrapa Recursos Genéticos e Biotecnologia (Cenargen, disponibilizando acessos até então inacessíveis à pesquisa científica. Em virtude dessa nova disponibilidade e igualmente de híbridos resultantes de pesquisas do Cenargen, organizou-se este trabalho. Foram objeto desta pesquisa cinco espécies: A. glabrata Benth., A. helodes Mart. ex Krapov.& Rigoni, A. pintoi‘Krapov.& W.C.Gregory, A. repens Handro e A. kempff-mercadoi Krapov.,W.C.Gregory & C.E.Simpson, e seis híbridos originados dos paternais: A. appressipila Krapov.&W.C.Gregory, A. paraguariensis Chodat & Hassl., A. pintoi, A. repens e A. vallsi Krapov.& W.C.Gregoryi. O experimento foi desenvolvido no período dos anos agrícolas de 1998 a 2000, na Fazenda Santa Elisa do Instituto Agronômico (IAC, em Campinas (SP, anotando-se o número de flores por planta, a velocidade de desenvolvimento, a capacidade de cobertura do solo, aspectos ornamentais como exuberância das flores e folíolos, coloração e, ainda, sanidade e vigor dos acessos. Os híbridos apresentaram um bom comportamento, porém com ciclo anual, ao passo que os acessos de Arachis kempffmercadoi, A.helodes, A. repens e A. glabrata mostraram-se mais recomendáveis para o uso em jardins por serem perenes. Todos os acessos ficam mais bonitos no verão em razão do período de floração e graças ao verde de sua massa foliar.

  4. Agricultura familiar para el desarrollo rural incluyente

    Directory of Open Access Journals (Sweden)

    Laksmi Reddiar Krishnamurthy

    2017-04-01

    Full Text Available Las comunidades indígenas Mayas de la península de Yucatán han practicado la antigua tradición de agricultura familiar, en particular los huertos caseros, para garantizar su seguridad alimentaria. Con el objetivo de mejorar la práctica tradicional considerando paradigmas de la ciencia moderna, por una parte, se colectaron datos para definir la complejidad estructural y diversidad funcional a partir de 20 huertos familiares en cinco comunidades: X - Maben, X - Pichil, X - Yatil, San José II y Melchor Ocampo; y por otra, se organizaron grupos de discusión para dilucidar la estrategia de gestión practicada por las comunidades nativas. Los resultados mostraron que los huertos son manejados principalmente por las mujeres. También mostraron que el propósito principal del crecimiento y mantenimiento de los huertos familiares es garantizar la producción de alimentos nutritivos durante todo el año. Y, por último que los huertos caseros también sirven para propósitos secundarios tales como la provisión de productos y servicios para la medicina tradicional. El estudio sugiere que se debe de promover e invertir en huertos caseros para mejorar las estrategias de desarrollo incluyente en ambientes socio-culturales y biofísicos similares.

  5. Concepcion didactica para el desarrollo de las habilidades para la ensenanza-aprendizaje de los contenidos geograficos empleando materiales cartograficos

    National Research Council Canada - National Science Library

    Laguna Cruz, Jorge Alejandro

    2005-01-01

    El trabajo tiene la finalidad de presentar una concepcion didactica para el desarrollo de las habilidades para la ensenanza-aprendizaje de los contenidos geograficos empleando materiales cartograficos...

  6. Estrategia para elevar la motivación laboral; factor imprescindible para mejorar nuestra productividad.

    OpenAIRE

    Reina de los Ángeles Carballé Piñón

    2015-01-01

    Este trabajo "Estrategia para elevar la motivación laboral; factor imprescindible para mejorar nuestra productividad" resulta de la investigación realizada para tesis de maestría; se realizó el estudio de 2 entidades, nos permitió conocer las principales posiciones que sobre motivación existen, factores que la influencian, cómo incide en el desempeño laboral y que acciones diseñar para elevarla. Las 2 entidades seleccionadas, claves en el desempeño empresarial son un centro de interfase y un...

  7. Arrendamiento y préstamo para equipo: Guía para el microfinanciamiento

    OpenAIRE

    Westley, Glenn D.

    2003-01-01

    En este trabajo se describe la manera de otorgar financiamiento para equipo --arrendamiento y préstamo-- para los microempresarios objeto del estudio, es decir, los que necesitan aproximadamente entre 50 y 2.500 dólares para adquirir equipo. El trabajo examina los pro y los contra de las dos principales alternativas de financiamiento: préstamos y arrendamientos. También proporciona una serie de recomendaciones en cuanto a las mejores prácticas para que las instituciones microfinancieras (IMF)...

  8. Caracterizacion metalografica de barras para sobredentaduras, elaboradas por sobrecolado de pilares para implantes dentales

    National Research Council Canada - National Science Library

    Castro, Irvin J; Valencia, Carlos H; Echeverri, Diana; Garzon, Herney; Molina, Anthony; Olave, Gilberto; Parra, Maritza

    2013-01-01

    .... El objetivo fue caracterizar metalograficamente un sistema de barras para sobredentadura por sobrecolado de una aleacion de metal base, sobre pilares prefabricados en aleacion de titanio. Metodos...

  9. Dosimetric quality of postal kit used for evaluation in IRD/CNEN of radiation protection parameters in dental radiology in the State of Rio de Janeiro; Qualidade dosimetrica do kit postal utilizado pelo IRD/CNEN para a avaliacao dos parametros de radioprotecao em radiologia odontologica no Estado do Rio de Janeiro

    Energy Technology Data Exchange (ETDEWEB)

    Coutinho, Soray Abbud; Mota, Helvecio C.; Dovales, Ana Cristina M. [Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, RJ (Brazil). Dept. de Fisica Medica]. E-mail: adovales@ird.gov.br

    2001-07-01

    This work shows the results of a comparison between the skin entrance doses determined using an ionization chamber or a postal kit routinely used for the evaluation of radiation protection parameters in dental radiology in the state of Rio de Janeiro. By using the dosimetric kit, entrance skin dose is determined from two thermoluminescent dosimeters (TLDs) - previously calibrated in a {sup 137} Cs source - by using calibration factors determined in TLDs irradiated in air, on a water phantom and on an aluminium filter. The correspondence between the doses obtained with different methods was evaluated for three different X-ray spectra as radiation source. Results indicate that calibration factors used are adequate and that the kit has enough sensibility and reproducibility, measuring properly the skin entrance dose in dental X-rays. (author)

  10. Extraction procedure compared to attenuation model to assess heavy metals mobility in sediments from Sepetiba Bay, Rio de Janeiro; Procedimento de fracionamento comparado a modelo de atenuacao para a avaliacao de mobilidade de metais pesados em sedimentos da Baia de Sepetiba, Rio de Janeiro

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Andreza Portella

    2006-07-01

    Sepetiba bay, located about 60 km west of the metropolitan region of Rio de Janeiro city, has undergone notable development in the last decades, with the establishment of about 400 industrial plants in its basin, basically metallurgical, which release its industrial waste either straight into the bay or through local rivers. The Sepetiba harbor also brought up a lot of industrial investment in that area. This urban and industrial expansion caused several environmental impacts, mainly due to the presence of heavy metals and other potentially toxic substances present in the effluents discharged into the bay. This work aimed to assess heavy metal (Cd, Cu, Ni, Pb e Zn) contamination and mobility in sediments from Sepetiba bay. The acid-volatile sulfides (AVS) and the concentration of simultaneously extracted metals (SIGMA[SEM) were determined in 65 sediment samples from Sepetiba bay, representing the whole area. The results obtained showed that Cd, Cu, Pb and Zn presented higher concentrations in the northeastern area (mainly in the mouth of Guandu and Canal de Sao Francisco rivers), while the highest concentration of Ni were observed in the western region of the bay. The comparison between SEM concentrations with the Canadian Sediment Quality Guidelines (TEL and PEL) indicated that Cd and Zn presented values which may hazard to aquatic organisms (concentration levels above PEL); the elements Cu, Pb and Ni presented concentration levels below PEL, suggesting low probability of toxicological effects to the aquatic organisms. On the other hand, the ratio {sigma}[SEM]/[AVS] was below 1 in the northeastern region, indicating that, in spite of the high concentration of the analyzed metals in this area, they are trapped in the sediment, as sulfides. The total metal concentrations in the sediments were also determined and the same distribution pattern obtained for the SEM were observed, with high concentrations in the northeastern region of the bay, classifying the area as level 2, for Zn, and as level 1, for Cd, Cu, Pb and Ni, according to the CONAMA 344/04 act. A geostatistical approach is presented, the attenuation of concentrations model, which aims to estimate metal mobility in sediments. The proposed model showed the highest attenuation values for Zn, Cd, Cu and Pb in the northeastern region, indicating that the mobility of these metals is low in this region, suggesting low availability, which is in good agreement with the results obtained by the SIGMA[SEM]/[AVS] model. These results indicate good possibilities of applying this model in metal contamination studies in estuarine ecosystems. (author)

  11. Evaluation of the ICRU operational magnitudes implantation for the photon radiation at the Angra I and Angra II nuclear power plants; Avaliacao da implantacao das grandezas operacionais do ICRU para a radiacao de fotons nas usinas nucleares Angra I e II

    Energy Technology Data Exchange (ETDEWEB)

    Viana, Ronaldo do Nascimento

    2006-07-01

    The measurements of photon radiation field intensity are usually performed by a radiation protection technician trained and having skill in using radiation rate meters. Nowadays, these measurements are reported on exposure quantity and used to protect exposed individuals against the radiation risks while executing their activities. The International Commission on Radiation Units and Measurements - ICRU - defined the operational quantity ambient equivalent dose H{sup *}(10). This quantity is accepted by the scientific community as the best estimative of the protection quantity effective dose, which can not be directly measured. The operational quantity H{sup *}(10) was introduced in Brazilian rules by the National Commission of Nuclear Energy - CNEN (2005a), although its adoption was conditioned to studies of convenience and applicability of implementation. The present work may contribute to these studies, as it presents the evaluation of H{sup *}(10)'s implementation at the Nuclear Central Almirante Alvaro Alberto - CNAAA. The evaluation involved radiological tests - the energy dependence and angular dependence - applied to six types of photon radiation rate meters utilized at the CNAAA, with represent around 83% of the total number of rate meters in use by CNAAA. The result of this evaluation is favorable to the quantity H{sup *}(10)'s implementation. Suggestions are presented in order to update de rate meters and the technical and administrative procedures related to the Laboratory of Calibration of Rate Meters - LCMR, belonging to CNAAA. Thus, it could be possible to perform the calibration of the rate meters at the nuclear installation. The results obtained allows to carry out new evaluations of H{sup *}(10)'s implementation on installations that perform measurements with radiation rate meters on the practice of radiation protection, in order to adopt the H{sup *}(10) quantity in our country. (author)

  12. Performance evaluation of the QC-6PLUS quality control system in terms of photons and electrons absorbed doses to water; Avaliacao do desempenho do sistema de controle da qualidade QC-6Plus em termos de dose absorvida na agua para fotons e eletrons

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, Flavia Cristina da Silva

    2004-06-15

    The quality of the treatment in radiotherapy depends on the necessary knowledge of the liberated dose in the tumor and of several other physical parameters and dosimetric that characterize the profile of the radiation field. Worrying about the reliability of some commercial equipment that aim at determining the main parameters of a radiation field in a practical way for daily checks in an institution with radiotherapy service, in this work a study of the performance of the quality assurance system, QC6-Plus manufactured by PTW-Freiburg for daily checks, was developed, in order to assure the use of this equipment with larger reliability level in the routine of quality assurance of the hospitals as well as to make possible its use in the Program of Regulatory Inspections of the Services of Radiotherapy of the Country accomplished by IRD/CNEN. The found results indicate that the system QC6-Plus is perfectly adapted and practical for relative measures of daily and weekly control of the main parameters of clinical beans in agreement with reference values recommended in TECDOC 1151. However for measurements of absolute dose it should not be used because, for beams of electrons the system does not present the necessary characteristics to execute this measure type in agreement with the reference protocol, TRS 398, and for photons of energy 15 MV presented a deviation in relation to the conventional method of absolute dosimetry of 7,7%, that it is a lot above the expected in agreement with TRS 398. (author)

  13. Assessment of environmental impact of ultraviolet radiation or electron beam cured print inks on plastic packaging materials; Avaliacao do impacto ambiental gerado por tintas graficas curadas por radiacao ultravioleta ou feixe de eletrons em materiais para embalagens plasticas convencionais ou biodegradaveis pos-consumo

    Energy Technology Data Exchange (ETDEWEB)

    Bardi, Marcelo Augusto Goncalves

    2014-07-01

    The high level of pollution generated by the inadequate disposal of polymeric materials has motivated the search for environmentally friendly systems and techniques such as the application of biodegradable polymers and the replacement of the solvent-based paint systems by those with high solids content, based water or cured by radiation, practically free of volatile organic compounds. However, the cured polymer coatings are neither soluble nor molten, increasing the complexity of the reprocessing, recycling and degradation. Thus, this work aimed to develop print inks modified with pro-degrading agents, cured by ultraviolet radiation or electron beam, for printing or decoration in plastic packaging products of short lifetime, which are biodegradable or not. Six coatings (varnish and inks in five colors: yellow, blue, white, black and red), three pro-degrading agents (cobalt stearate, cerium stearate and manganese stearate), five polymeric substrates (Ecobras®, low density polyethylene and its respective modifications with pro-degrading agents). The coatings were applied to the substrates and cured by ultraviolet radiation or electron beam, resulting in 180 samples. These materials were then exposed to accelerated aging chamber, type 'QUV', and composting in natural environment. In order to assess the effects of the polymer coatings on the degradation process of the specimens, only the yellow and black samples were exposed to a controlled composting environment via respirometry, reducing to 16 the number of samples. The organic compound generated by the biodegradation process was analyzed by the ecotoxicity tests. It was observed that the coating layer acted as a barrier that inhibits degradation of the plastic when exposed to weathering. The addition of pro-degrading agents promoted acceleration in the degradation process, promoting the migration of the metal ion to the medium without affecting the final quality of the organic compost. (author)

  14. Evaluation of a system of refrigeration with absorption cycle using the direct burning of natural gas for tropical fruits storage; Avaliacao de um sistema de refrigeracao com ciclo de absorcao utilizando a queima direta de gas natural para armazenamento de frutas tropicais

    Energy Technology Data Exchange (ETDEWEB)

    Bartolomeu, Lair S.; Torres, Ednildo A. [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Escola Politecnica. Lab. de Energia e Gas; Silva, Gabriel F. [Universidade Federal de Sergipe (UFS), Aracaju, SE (Brazil); Martins, Ronaldo M. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Materiais. CQDM; Campos, Michel F. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Gerencia de Tecnologia do Gas Natural. Rede GasEnergia

    2004-07-01

    This work has the purpose to analyze an alternative method in the conservation of tropical fruits in chamber cooled through the technology of use of the natural gas as energy source. The study it was carried through in chiller of absorption, Robur model, of 5TR, which meets in the campus of the Federal University of Sergipe (UFS/LEG). The energy analysis had as objective to study the process involving the cycle and its components. Of the analysis of first law was gotten a power of refrigeration of 8,8 kW and a COP=0,32 and the analysis of second law {beta}=0,29. The exergetic analysis had for intention to evaluate the amount and the quality of the energy in the system. The heat generator was the component that presented the biggest irreversibility, whose relation with the total irreversibility was about 70%. In the absorber the lesser exergetic efficiency was verified. Project is supported by the GasEnergia/PETROBRAS. (author)

  15. 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)

  16. Assessment of potential areas to biomass cultivation for energy production and a contribution of remote sensing and geographic information systems; Avaliacao de areas potenciais ao cultivo de biomassa para producao de energia e uma contribuicao de sensoriamento remoto e sistemas de informacoes geograficas

    Energy Technology Data Exchange (ETDEWEB)

    Miura, Adalberto K.; Anjos, Sergio D. dos [EMBRAPA Clima Temperado, Pelotas, RS (Brazil)], E-mail: adalberto.miura@cpact.embrapa.br; Formaggio, Antonio R.; Shimabukuro, Yosio E. [Instituto Nacional de Pesquisas Espaciais (INPE), Sao Jose dos Campos, SP (Brazil); Luiz, Alfredo J.B. [EMBRAPA Meio Ambiente, Jaguariuna, SP (Brazil)

    2011-06-15

    Since early times, the human kind has been using the biomass for energy purposes. However, the current increasing energy demand can endanger the energy security of the nations and, as well, could put in risk the planet's environmental quality and human health. Thus, by the issues concern about the fossil fuels utilization, the importance of renewable energy sources is being rescued. In this scenario, the biomass energy planning becomes very important to tropical countries, like Brazil, because it would allow stimulating the production of biomass for energy where it is required, but in a sustainable way, considering the social and environmental aspects. Thus, this study aims to present important aspects related with regional energy planning as a contribution for proposing better solutions to energy demands and to think about better public policies related to energy production from biomass. Besides, a contribution of Remote Sensing and Geographic Information System in order to assess areas for biomass energy production and a conceptual model are presented as framework which demonstrates how these techniques can constitute support tools to strategic decision making process in bioenergy issues. Some difficult and constraints to territorial and agro-energy planning in Brazil was also presented. (author)

  17. Risk assessment of environmental exposure to mercury in the urban area of Alta Floresta, Mato Grosso State - Amazonian basin - Brazil; Avaliacao do risco potencial para a saude humana da exposicao ao mercurio na area urbana de Alta Floresta, Mato Grosso - Bacia Amazonica - Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Hacon, Sandra de Souza

    1996-07-01

    Mercury contamination in the Amazon basin is a consequence of the intensive and extensive use of metallic Hg in gold mining activities which use the amalgamation process. Mercury vapor is the main form of Hg released in the Amazonian ecosystem. However, some studies have shown that enhanced biotransformation of inorganic mercury into organic Hg is occurring. These two forms of Hg have some properties in common but differ in toxicity and metabolic behavior. Knowledge of the fate and transport of Hg in the Amazon basin is especially important for the assessment of the extent of contamination, as well as the characterization of exposed groups. the present study attempts to evaluate the Hg exposure scenario as well as to assess the quantitative risk (from Hg emission) for workers in gold-dealers' shops and for the general population in the urban area of Alta Floresta. The way that are was populated and the regional and local economy history, particularly in connection with the commercialization of gold in the region, are important factors in the study of the exposure scenario in Alta Floresta. Assessment of exposure pathways has shown that the adult and infant populations of Alta Floresta are exposed to low dose levels of Hg. Fish consumed locally shows high concentrations of Hg, ranging from 0,5 to 3,6 mg/kg. However, due to the low consumption of fish by the general population this exposure pathway has little effect on the health of the general public. Fishermen and their families are those most at risk from Hg intoxication. Workers in gold shops are another critical group, in relation to exposure to Hg vapor. As for the infant population, above 4 years old, inhalation of Hg vapor is the main source of the exposure, one exception being to children of fishermen whose pattern of fish consumption is similar to their parents. These are the two groups at risk from fish ingestion. Infants between 1 and 4 years of age are the group most likely to suffer adverse effects from exposure to Hg vapor. (author)

  18. Assessment of impact of a severe accident at nuclear power plant of Angra dos Reis with release of radionuclides to the atmosphere; Avaliacao do impacto de um acidente severo na usina de Angra dos Reis com liberacao de radionuclideos para a atmosfera

    Energy Technology Data Exchange (ETDEWEB)

    Aguiar, Andre Silva de

    2015-07-01

    This study had as purpose the assess the impact of a severe accident, and also analyze the dispersion of {sup 131}I in the atmosphere, so that, through concentrating and inhaling dose of the plume, were possible to verify if the results are in accordance with the indicated data by the Plan of Emergency of the CNAAA regarding the Impact Zone and Control. This exercise was performed with the aid of an atmospheric model and a dispersion where to atmospheric modeling we used the data coupling WRF / CALMET and of dispersion, CALPUFF. The suggested accident consists of a Station Blackout at Nuclear Power of Angra (Unit 1), where through the total core involvement, will release 100% of the {sup 131}I to the atmosphere. The value of the total activity in the nucleus to this radionuclide is 7.44 x 1017 Bq, that is relative on the sixth day of burning. This activity will be released through the chimney at a rate in Bq/s in the scenario of 12, 24, 48 and 72 hours of release. Applying the model in the proposed scenario, it is verified that the plume has concentrations of the order of 1020 Bq/m³ and dose of about 108 Sv whose value is beyond of the presented by Eletronuclear in your current emergency plan. (author)

  19. Assessment of environmentally available metals in sediment samples from water for public supply of the city of Palmas, Tocantis, Brazil; Avaliacao dos metais ambientalmente disponiveis em amostras de sedimento de pontos de captacao de agua para abastecimento publico de Palmas, TO, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Bruna Rafaela

    2012-07-01

    The sediments are an important compartment used as a tool for assessment of aquatic ecosystems quality, for indicating the presence of contaminants released continuously into the environment as a result of human activities. Among chemical substances discharged to surface water, there are metals that in undesirable amounts, can be toxic to biota. Due to the importance of sediment and of shortage of data of water quality of the Araguaia-Tocantins river system, the present study conducted an assessment of environmentally available metals in sediment samples from water for public supply of the city of Palmas, in Tocantins, Brazil. The concentrations of As, Cd, Pb and Se were analyzed by Graphite Furnace Atomic Absorption Spectrometry (GFAAS), Ag, Al, B, Ba, Be, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Sb, Sc, Si, Ti, V and Zn were analyzed by Inductively Coupled Plasma Optical Emission Spectrometry (ICPOES) and Hg by Cold Vapor Atomic Absorption Spectrometry (CVAAS). Two partial solubilization processes were performed for a comparative study, one with HCl 0,1 M and agitation at room temperature, considered a milder method for metal extraction from anthropogenic origin, and another with HNO{sub 3} 8 M and microwave heating, considered as an alternative to more complex methods of total digestion, since it provides a good evaluation of the total concentration of the elements. The sediment quality evaluation was realized by comparing the concentration values of the elements As, Cd, Cr, Cu, Hg, Ni, Pb and Zn with the quality guidelines (TEL and PEL) adopted by Canadian Council of Minister of the Environment (CCME), to thereby contribute to the environmental quality of the water of the Araguaia-Tocantins river system. (author)

  20. Establishment and prioritization of relevant factors to the safety of fuel cycle facilities non reactor through dynamics archetypes evaluation; Estabelecimento e priorizacao de fatores relevantes para a seguranca de instalacoes do ciclo do combustivel exceto o reator atraves da avaliacao da dinamica de arquetipos

    Energy Technology Data Exchange (ETDEWEB)

    Sousa, Anna Leticia Barbosa de

    2012-07-01

    The present work aims to establish and prioritize factors that are important to the safety of nuclear fuel cycle facilities in order to model, analyze and design safety as a physical system, employing systemic models in an innovative way. This work takes into consideration the fact that models that use adaptations of methodologies for nuclear reactors will not properly work due to the specificities of fuel cycle facilities. Based on the fundamentals of the theory of systems, the four levels of system thinking, and the relationship of eight socio technical factors, a mental model has been developed for safety management in the nuclear fuel cycle context. From this conceptual model, safety archetypes were constructed in order to identify and highlight the processes of change and decision making that allow the system to migrate to a state of loss of safety. After that, stock and flow diagrams were created so that their behavior could be assessed by the system's dynamics. The results from the analysis using the model that simulates the dynamic behavior of the variables (socio technical factors) indicated, as expected, that the system's dynamics proved to be an appropriate and efficient tool for modeling fuel cycle safety as an emergent property. (author)

  1. Implementation of computational model for the evaluation of electromagnetic susceptibility of the cables for communication and control of high voltage substations; Implementacao de modelo computacional para a avaliacao da suscetibilidade eletromagnetica dos cabos de comunicacao e controle de subestacoes de alta tensao

    Energy Technology Data Exchange (ETDEWEB)

    Sartin, Antonio C.P. [Companhia de Transmissao de Energia Eletrica Paulista (CTEEP), Bauru, SP (Brazil); Dotto, Fabio R.L.; Sant' Anna, Cezar J.; Thomazella, Rogerio [Fundacao para o Desenvolvimento de Bauru, SP (Brazil); Ulson, Jose A.C.; Aguiar, Paulo R. de [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Bauru, SP (Brazil)

    2009-07-01

    This work show the implementation of a electromagnetic model for supervision cable, protection, communication and high voltage substations control that was investigated in literature and adapted. The model was implemented by using a computational tool in order to obtain the electromagnetic behavior of various cables used in CTEEP substation, subject to several sources of electromagnetic interference in this inhospitable environment, such as lightning strikes, outbreaks of maneuvers switching and the corona effect. The results obtained in computer simulations were compared with results of laboratory tests carried out on a lot of cables that represent those systems that are present in substations 440 kV. This study characterized the electromagnetic interference, ranked them, identified possible susceptible points in the substation, which contributed to the development of a technical procedure that minimizes unwanted effects caused in communication systems and substation control. This developed procedure also assured the maximum reliability and availability in the operation of the electrical power system to the company.

  2. Dose evaluation in function of the thyroid captivation percentage and mass in patients under radiotherapy for toxic goiter treatment;Avaliacao da dose em funcao do percentual de captacao e massa tireoidiana em pacientes submetidos a radioterapia para tratamento de bocio toxico com {sup 131}I

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Aline Nunes [Universidade Catolica de Pernambuco (DF/UNICAP), Recife, PE (Brazil). Dept. de Fisica; Antonio Filho, Joao [Universidade Federal de Pernambuco (DEN/UFPE), Recife, PE (Brazil). Dept. de Energia Nuclear

    2009-07-01

    Rarely the patient's metabolism is pondered when the quantity of radioactive material administrated to the patient is calculated. Nowadays, realizing till 150 mCi/g activities treatments are not indicated to toxic goiter radiotherapy. This paper objectives to establish a group of {sup 13I}-treatment options optimization for owner toxic goiter patients to maximize benefits and minimize radiological detriments. Methodology consisted of effective and absorbed whole-body and the other organs doses evaluations. And to observe the relation between these values and the thyroid mass and captivation percentage. The results, in spite of characteristic variations of each patient, showed such a homogeneity. This phenomenon happens because of explicit dependency on the real activity administrated to the patient. Used protocols for the toxic goiter treatment optimization avoiding waste of radioisotopes. (author)

  3. Wetting evaluation of silver based braze alloys onto zirconia metalized with reactive elements for application in oil well drill bots; Avaliacao do molhamento de ligas de adicao a base de prata sobre zirconia polida e metalizada com elementos ativos para aplicacao em brocas de perfuracao de pocos de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, J.C.; Silva, J.M.; Santos, P.R.F.; Nascimento, R.M.; Martinelli, A.E. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Engenharia de Materiais], Email: jocabuzo@gmail.com; Pimenta, J.S. [Universidade Federal de Santa Catarina (UFSC), Florianopolis, SC (Brazil). Dept. de Engenharia Mecanica

    2010-07-01

    Drill bits with hard ceramic inserts are often used on drilling operations. The cutting and crushing action of rocks will produce failures in the tricone bits, which are related to wear; total or partial rupture of the drill bit body or even the inserts; thermal shock and corrosion. The research of better drill bits with ceramic inserts thermally more stable and mechanically stronger, will lead to an increase of their lifetime, and so reducing costs of substitution and maintenance. In the present work, some silver based braze alloys were melted onto zirconia YSZ substrates metallized or not with active metals. inside a furnace with vacuum of 10{sup -5} mbar to evaluate the wetting behavior. The system with AgCuTi and the non metallized YSZ ceramic, showed low contact angles and stable interfaces, which may be appropriate for brazing metal/ceramic parts. (author)

  4. The fatigue and corrosion fatigue behavior of welded Inconel 625 alloy employed in off-shore platforms; Avaliacao do comportamento a fadiga e a corrosao-fadiga de juntas soldadas da liga Inconel 625 testada para uso em plaaformas off-shore

    Energy Technology Data Exchange (ETDEWEB)

    Pfingstag, M.E.; Schroeder, R.M.; Mueller, I.L. [Universidade Federal do Rio Grande do Sul (LAPEC/UFRGS), Porto Alegre, RS (Brazil). Dept. de Metalurgia. Lab. de Pesquisa em Corrosao], e-mail: maiquel10@walla.com

    2006-07-01

    The fatigue and corrosion fatigue behavior of welded Inconel 625 employed live like risers in off-shore platforms was studied. These risers may be employed integrally of this alloy, or combined with API 52 X60 steel in the form of 'Clads'. One of the most susceptible points in .these structures is the circumferential weld that joint the pipes together. In these regions, stresses and defects are generated by the welding process, and these material remind in contact with aggressive species like, chlorides and Co{sub 2} . Polarization curves, slow strain rate fatigue and corrosion fatigue tests were used to characterize the Inconel alloy behavior. In the welded deposit condition, this alloy shows an excellent resistance corrosion and a good fatigue and corrosion-fatigue behavior.(author)

  5. Preparation and assessment of [{sup 99m}Tc]technetium aquacarbonyl complexes with 1,2-diaminoethane-N-substituted ligands for tumor detection; Preparo e avaliacao de complexos de [{sup 99m}Tc]tecnecio aquacarbonil com ligantes 1,2-diaminoetano-N-substituidos para deteccao de tumores

    Energy Technology Data Exchange (ETDEWEB)

    Radin, Adriano

    2010-07-01

    Over least 15 years the complex [[{sup 99m}Tc](H{sub 2}0){sub 3}(CO){sub 3}]{sup +} has been used as an intermediary to obtain technetium radiopharmaceuticals for applications in cardiology, neurology and oncology. Two important characteristics of this molecule are: the facility for obtaining that compound from aqueous solutions and the easiness of substituting H{sub 2}O molecules by atoms of other ligand molecules. In this project we prepared new complexes [[{sup 99m}Tc](CMN{sup S001-3})(H{sub 2}O)(CO){sub 3}]{sup +}, where (CMNS001) = N-[(4-methoxy) benzyl]-1,2-diaminoethane, (CMNS003) = N,N'-bis-[(4-methoxy)benzyl]-1,2-diaminoethane, and assessed the uptake of these complexes in murine melanoma cancer cell B16F10 and breast cells MCF-7 and MDA-MD-231, and compared with [[{sup 99m}](MIBI){sub 6}]{sup +} uptake. In vitro uptake for both new technetium complex reached values close to 5%, for all cell lines, whereas the [[{sup 99m}Tc](MIBI){sub 6}]{sup +} uptake was close to 1 %. The assessment of subcellular distribution showed high accumulation of the new complex in the membrane fraction, for MDAMB-231, while for B16F10 accumulation occurred both in membrane and cytoplasm; the concentration of [[{sup 99m}Tc](MIBI){sub 6}]{sup +} was mainly in the cytoplasm portion. Biodistribution study in mice allowed to observe the capture of up to 1.6% of the administered dose per gram of tumor tissue for the complex [[{sup 99m}Tc](CMNS001)(H{sub 2}O)(CO){sub 3}]{sup +}, whereas other organs such as heart, lung and muscle, showed uptake of about 5.6%, 6.4% and 2%, respectively. The complexes in this work showed a high rate of uptake in vitro, but was not reproduced in vivo model, which can be related to low concentration of the complexes inside the cells and reduced vascularity of tumor tissue, with lower intake of complex through the blood system. (author)

  6. Application of the linear load normalization technique in specimens SE(T) for the evaluation of structural integrity in conducting ducts of gas and oil; Aplicacao da tecnica de normalizacao linear da carga em especimes SE(T) para a avaliacao de integridade estrutural em dutos condutores de gas e petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Piovatto, R.R.; Carvalho, A.L.M.; Bose Filho, W.W.; Spinelli, D.; Rugieri, C. [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil); Universidade de Sao Paulo (USP), SP (Brazil). Escola Politecnica], e-mail: betaopiovatto@gmail.com

    2006-07-01

    This aim of this work is to evaluate the fracture toughness of pipe lines under high internal pressure, used in the petroliferous industry for transportation of gas and oil. These ducts are produced from high strength low alloy steels, classified as API X60. Therefore, to simulate the stress and strain fields ahead of crack, the SE(T) specimens has been point out as the best specimen geometry. The linear load normalization technique, LLN, has been showed as a promissory technique for obtaining the J-R resistance curves. The J values were obtained following the ASTM 1820 and 1152 standards, with the coefficients modified for this specimen geometry. Side groves were executed to avoid crack tunneling and to maintaining the crack on the plane perpendicular to the loading direction. The J-R curves obtained are compatible for high ductility steels. However, the observed J values seems to high, and the factors affecting this result are discussed in this work. (author)

  7. Evaluation of O{sub 3}UV e H{sub 2}O{sub 2}/UV processes combined with biological activated carbon for reuse refinery waste water; Avaliacao dos processos O{sub 3}UV e H{sub 2}O{sub 2}/UV combinados com carvao ativado granulado com biofilme para reuso de efluentes de refinaria

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Bianca Miguel de; Dezotti, Marcia [Coordenacao dos Programas de Pos-Graduacao de Engenharia (COPPE/UFRJ), RJ (Brazil); Cerqueira, Ana Claudia Figueiras Pereira de [Petroleo Brasileiro S.A. (CENPES/PETROBRAS), Rio de Janeiro, RJ (Brazil). Centro de Pesquisas e Desenvolvimento

    2012-07-01

    The treatment of refinery wastewater by advanced oxidation processes (AOP) coupled with biological activated carbon (BAC) was investigated aiming to generate water for reuse. The Gabriel Passos Refinery wastewater was previously treated in a membrane bioreactor, but still presented a high TOC content (30 mg/L) which may cause biofouling in the subsequent process of reverse osmosis. O3/UV and H2O2/UV processes were employed to oxidize the organic matter and BAC process to remove the residual organic matter from the AOP effluent. AOP promoted oxidation of recalcitrant organic matter as observed by drops on the treated wastewater absorbance and TOC values. BAC filters reached a TOC removal of 65% after 84 days of operation, while GAC filters were saturated after 28 days. Inoculated sand filters were also tested at different flow rates to compare with BAC filters. Low TOC values were achieved by the combined treatment, reaching values around 5 mg/L and allowing water reuse. BAC filters showed to be quite efficient for removal of organic compounds found in biologically treated oil refinery wastewater. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2006-07-01

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

  9. Viability evaluation of the reading system by CCD for application at the Fricke xylenol gel dosimetry developed by IPEN-Sao Paulo, Brazil; Avaliacao de viabilidade do sistema de leitura por CCD para aplicacao na dosimetria Fricke xilenol gel desenvolvido no IPEN-Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Mangueira, Thyago Fressatti; Dias, Daniel Menezes; Campos, Leticia Lucente, E-mail: thyagomangueira@usp.b, E-mail: dmdias@ipen.b, E-mail: lcrodri@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2009-07-01

    The use of chambers with coupled charge devices - CCD, is already used by research centres for the dose evaluation applying the Fricke xylenol gel dosemeter. This work evaluates the application of this optical reading technique for the FXG developed at the IPEN, Sao Paulo, Brazil

  10. Preliminary technical and economic viability for the implantation of fluvial transport of CNG (Compressed Natural Gas) for barges in Amazon Region; Avaliacao preliminar de viabilidade tecnico-economica para implantacao de transporte fluvial de GNC (Gas Natual Comprimido) por barcacas na Regiao Amazonica

    Energy Technology Data Exchange (ETDEWEB)

    Araujo, Marcos C.C. de; Porto, Paulo L. Lemgruber [Interocean Engenharia e Ship Management, Rio de janeiro, RJ (Brazil); Cunha, Rafael H. da [Metro Rio, RJ (Brazil); Garcia, Rafael M. [Pic Brasil (Brazil); Almeida, Marco A.R. de [Universidade Gama Filho (UGF), Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The isolated regions of the Amazon present difficulties for integration with the electrical system which is creating some economic problems due to the consequent costs of electric generation of subsidies as a function of the fossil fuel use as oils diesel and fuel. A viable option is the use of Natural Gas - NG that is Also available in the region. Its modal of transport possible in the Region North they are for gas-lines or barges. The Compressed Natural Gas transport is distinguished that - CNG for barges was still not tested operationally in Brazil. Soon, to develop a Preliminary Study of Viability Technician - Economic - SVTE for the implantation of fluvial transport of CNG between the cities of Coari and Manaus is basic, therefore it is created strategical alternative for the electric generation in this region. The electric sector, the characteristics of the NG and the transport in this region had been analyzed to support to the work. The gas line and the fluvial transport of CNG for barges in this region are not conflicting, and they in a complementary form can act. The SVTE presented a Liquid Present Value and Internal Tax of very attractive Return justifying its implantation. (author)

  11. Methodological proposal for identification and evaluation of environmental aspects and impacts of nuclear facilities of IPEN, Sao Paulo, SP, Brazil: a case study applied to the Nuclear Fuel Center; Proposta metodologica para a identificacao e avaliacao de aspectos e impactos ambientais em instalacoes nucleares do IPEN: estudo de caso aplicado ao Centro do Combustivel Nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Mattos, Luis Antonio Terribile de

    2013-07-01

    This work presents an application of Failure Mode Effect Analysis (FMEA) to the process of identification of environmental aspects and impacts as a part of implementation and maintenance of an Environmental Management System (EMS) in accordance with the NBR ISO 14001 standard. Also, it can contribute, as a complement, to the evaluation and improvement of safety of the installation focused. The study was applied to the Nuclear Fuel Center (CCN) of Nuclear and Energy Research Institute (IPEN), situated at the Campus of University of Sao Paulo, Brazil. The CCN facility has the objective of promoting scientific research and of producing nuclear fuel elements for the IEA-R1 Research Reactor. To identify the environmental aspects of the facility activities, products, and services, a systematic data collection was carried out by means of personal interviews, documents, reports and operation data records consulting. Furthermore, the processes and their interactions, failure modes, besides their causes and effects to the environment, were identified. As a result of a careful evaluation of these causes it was possible to identify and to classify the major potential environmental impacts, in order to set up and put in practice an Environmental Management System for the installation under study. The results have demonstrated the validity of the FMEA application to nuclear facility processes, identifying environmental aspects and impacts, whose controls are critical to achieve compliance with the environmental requirements of the Integrated Management System of IPEN. It was demonstrated that the methodology used in this work is a powerful management tool for resolving issues related to the conformity with applicable regulatory and legal requirements of the Brazilian Nuclear Energy Commission (CNEN) and the Brazilian Institute of Environment (IBAMA). (author)

  12. Evaluation of agreement between transvaginal ultrasonography and magnetic resonance imaging of the pelvis in deep endometriosis with emphasis on intestinal involvement; Avaliacao da concordancia entre a ultrassonografia transvaginal e a ressonancia magnetica da pelve na endometriose profunda, com enfase para o comprometimento intestinal

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    Cardoso, Maene Marcondes; Coutinho Junior, Antonio Carlos; Domingues, Marisa Nassar Aidar [Clinica de Diagnostico por Imagem (CDPI), Rio de Janeiro, RJ (Brazil)], e-mail: maenemc@oi.com.br; Werner Junior, Heron [Clinica de Diagnostico por Imagem (CDPI), Rio de Janeiro, RJ (Brazil). Unit of Gynecologic/Obstetric Radiology; Berardo, Plinio Tostes [Universidade Estacio de Sa, Rio de Janeiro, RJ (Brazil). Faculdade de Medicina; Gasparetto, Emerson Leandro [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Faculdade de Medicina. Dept. de Radiologia; Domingues, Romeu Cortes [Clinicas Multi-Imagem, Rio de Janeiro, RJ (Brazil)

    2009-03-15

    Objective: To compare sonographic and magnetic resonance imaging findings in deep endometriosis with emphasis on intestinal involvement. Materials and methods: Eighteen women aged between 23 and 49 years with clinical suspicion and gynecological signs suggestive of deep endometriosis were submitted to ultrasonography and magnetic resonance imaging for correlation between findings. Results: Ultrasonography detected 40 lesions while magnetic resonance imaging detected 53 lesions in the pelvis. A comparative study has not shown any statistically significant intermethod difference in the detection of lesions (respectively p > 0.19 and p > 0.14). In the rectosigmoid junction, magnetic resonance imaging has detected one (5.6%) lesion, while ultrasonography has detected four lesions (22.2%). In the rectum, ultrasonography has detected eight lesions (44.4%), and magnetic resonance imaging has detected seven lesions (38.9%). Conclusion: The intermethod agreement has not been good for lesions in the rectosigmoid junction, considering that ultrasonography has detected a higher number of lesions in this region, but a lower number of lesions in the pelvis as compared with magnetic resonance imaging. The global comparative analysis has demonstrated no statistically significant intermethod difference in the detection of lesions. Low cost, good tolerability and high availability make ultrasonography a valuable diagnostic tool in cases of deep endometriosis. (author)

  13. Assessment of the synthesis conditions for nano-Bi{sub 4}Ti{sub 3}O{sub 12} production by the combustion route; Avaliacao das condicoes de sintese para producao de nano-Bi{sub 4}Ti{sub 3}O{sub 12} pelo metodo de combustao

    Energy Technology Data Exchange (ETDEWEB)

    Dias, Jeferson A.; Nascimento, Cassia C.; Oliveira, Jessica A.; Morelli, Marcio R., E-mail: jeferson.unifal@gmail.com [Universidade Federal de Sao Carlos (UFSCar), SP (Brazil)

    2016-07-01

    The bismuth titanate has interesting optoelectronic properties. Its production in nanometric scale is important due to the demand of miniaturized electronic devices and greater synthesization facility. This study aims at the evaluation of synthesis parameters for nano-Bi{sub 4}Ti{sub 3}O{sub 12} production by the combustion route. For that, the materials were synthesized and calcined at 600°C, 700°C and 800°C. The materials were posteriorly characterized by X-Ray diffraction, SEM, DSC-TGA, FTIR; DRS and impedance spectroscopy. The results have demonstrated that the combustion method was effective for nanocrystalline powders production, which also showed high levels of purity. Particles size growth was observed for high treatment temperatures. Low level of residual organic matter was determined and the high electrical resistivity was observed. The temperature of 600°C was enough to produce particles with optimal properties. Therefore, the results have confirmed the efficacy of combustion route to produce nanometric Bi{sub 4}Ti{sub 3}O{sub 12}. (author)

  14. Study for evaluation of filter thickness in the determination of k Vp in function of the attenuation relative factors of the radiation;Estudo para avaliacao da espessura de filtros na determinacao da kVp em funcao dos fatores de atenuacao relativos da radiacao

    Energy Technology Data Exchange (ETDEWEB)

    Martin, J.G.; Souza, R.T.F. [UNESP, Botucatu, SP (Brazil). Inst. de Biociencias; Carbi, E.D.O.; Pina, D.R. [UNESP, Botucatu, SP (Brazil). Faculdade de Medicina. Hospital de Clinicas

    2009-07-01

    This work consisted of evaluating 3 pairs of filters (cupper). The aim of it was to verify the best combination between attenuating material thicknesses for determination voltage value applied to X ray tube as function of attenuation relative factors. The employed methodology consisted of measuring the relative expositions, using thicknesses copper plates: (0,3, 0,5 and 0,8) mm. The thicknesses had been combined between itself with the purpose to form pairs of filters look that used ones ink Vp measurers. The great kVp band was used for 3 X ray equipment with generators of single-phase. Three-phase tension of 12 pulses and generator of tension in high frequency. The results had pointed the best combination, the thicknesses of filters (0,5/0,3) mm, because it does not have presented duplicity of values throughout all the band of evaluated tension. The results had still shown that the relative attenuation factors had not suffered significant variations between the different equipment with different voltage wave form. The variations found are related with differences in the effective energy of X ray beam. (author)

  15. Quality control assessment data for planning radiotherapy with VMAT Technique made at the Hospital Sao Lucas, Porto Alegre, RS, Brazil; Avaliacao dos dados de controle de qualidade para planejamentos radioterapicos com a tecnica VMAT realizados no Hospital Sao Lucas, Porto Alegre

    Energy Technology Data Exchange (ETDEWEB)

    Leidens, Matheus; Lopes, Juliane S.; Estacio, Daniela R.; Bonatto, Larisse N.; Sansson, Angela; Sbaraini, Patricia; Duarte, Lucas O.; Silva, Ana M. Marques da, E-mail: juliane.lopes@pucrs.br [Pontificia Universidade Catolica do Rio Grande do Sul (PUC-RS), Porto Alegre, RS (Brazil)

    2016-07-01

    The objective of this study was to evaluate the procedures used for quality control (QC) for each individual patient, planned with the volumetric modulated arc radiotherapy technique (VMAT), used in the routine of the institution's radiotherapy service. The QC of 29 plans, from August 2015 to October 2015, in 15 cases of prostate, and 14 of head and neck. During QC, verification planning were created, performed before starting the treatment. Two evaluations were performed: gamma analysis (γ), which compares the measured and calculated dose distribution, verified through the EPID (Electronic Portal Imaging Device); and the verification of point dose delivered at the isocenter treatment, using a simulator object with an ionization chamber. The method involved the creation of verification plans of treatments and their evaluation and phantom. The results of analysis, for prostate and head and neck were, on average, (96.0 ± 2.2)% and (98.8 ± 1.4)%, respectively. For the prostate, in 93.3% of the cases examined, the differences between the dose measured by the ionization chamber and that generated by the verification plan were lower than 5%, and for CP, 92.9%. The treatment planning in the service, on average, obeyed the acceptance criteria and the dose differences of analysis. Thus, the procedures performed in the treatments using the VMAT of the institution are suitable for clinical application. (author)

  16. Study of the viability of technetium-{sup 99m} labeling of whole antimyosin antibody and its fragment: development of radiopharmaceutical for cardiac survey; Estudo da viabilidade da marcacao com tecnecio-99m do anticorpo antimiosina integro e seu fragmento: desenvolvimento de radiofarmaco para avaliacao cardiaca

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Guilherme Luiz de Castro

    2007-07-01

    In the acute myocardium infarction, the myocytes cell membrane loses its integrity, allowing the influx of extracellular macromolecules such as circulating antibody into the damaged cell. The use of the specific antibodies against cardiac myosin labeled with {sup 99m}Tc allows to determine the localization and extension of myocardial infarction. The purpose of this work was to study the viability of labeling of the antimyosin monoclonal antibody and its fragment F(ab')2 with {sup 99m}Tc. Because of the high cost of antimyosin antibody, others antibodies were used to optimize the methodology and the best condition was used for antimyosin antibody. The intact antibody was cleaved by pepsin to produce F(ab'){sub 2} fragment. The F(ab'){sub 2} and the intact antibody were reduced by treatment with Dithiothreitol (DTT) and 2-Mercaptoethanol (2-ME) and labeled with {sup 99m}Tc by direct method. Different concentrations of reductant, mixing conditions and incubation times were studied. In the standard condition, incubation at molar ratio 1:1000 (antibody:reducing agent) at room temperature for 30 minutes with continuous rotation (850 rpm), 13.28 - SH groups were formed per molecule. It was studied the influence of p H, of the concentration of stannous chloride (Sn{sup 2+}) and incubation time in the labeling condition. The better radiochemical yield (90.06 +- 1.53%) was obtained using 2.5 {mu}g of Sn{sup 2+} in p H 4.5 for 60 minutes. The labeling of the fragment F(ab'){sub 2} did not present satisfactory results because of the low yield of the digestion. After purification by PD-10, the biodistribution study was performed and showed that the intact antimyosin antibody labeled with {sup 99m}Tc presented fast kinetic compatible with the biodistribution of an intact antibody labeled with {sup 99m}Tc. Scintigraphy image of the animal with myocardial infarction was obtained and compared with the image of a normal animal. The studies allow to conclude that the use of fragment F(ab'){sub 2} are not viable, but the use of the labeled antimyosin antibody are promising. (author)

  17. Contribution to the evaluation of vortex-induced vibrations analysis using 'wake oscillators' and 'vortex-tracking' models; Contribuicao a avaliacao dos modelos 'wake oscillator' e 'vortex tracking' para analise de vibracoes induzidas por vortices

    Energy Technology Data Exchange (ETDEWEB)

    Carneiro, Daniel L. [Bureau Veritas do Brasil, Rio de Janeiro, RJ (Brazil); Ellwanger, Gilberto B. [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE); Galgoul, Nelson S. [SUPORTE Consultoria e Projetos, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Fatigue due to vortex-induced vibrations (VIV) is one of the major uncertainties today in the design of slender offshore structures, such as risers, pipelines, umbilicals, tendons and mooring lines, required for oil and gas production in deep waters. The absence of reliable tools for quantitative analyses of this phenomenon is a technological barrier, which is being faced by several research groups, generating tens of thesis and articles every year. This paper presents VIV results achieved by the author, using 'wake oscillator' and 'vortex tracking' models, when researching for his M. Sc. dissertation. Time domain analyses were performed using a commercial software. First results describe the response of the evaluated models for two degrees-of-freedom rigid cylinders, which were compared to values prescribed in recognized recommended practices. Afterwards, VIV analyses results for a steel catenary 10-inch diameter riser in three dimensional current profiles were compared to measured values. The considered riser, installed in 910 m water depth offshore Brazil, is possibly the only monitored SCR with no VIV suppression devices in the world today. The results were considered satisfactory, despite some discrepancies. The authors expect the presented results to contribute in further studies on these models. (author)

  18. Ablation of burned skin with ultra-short pulses laser to promote healing: evaluation by optical coherence tomography, histology, {mu}ATR-FTIR and Nonlinear Microscopy; Ablacao de pele queimada com laser de pulsos ultra-curtos para promocao da cicatrizacao: avaliacao por tomografia por coerencia optica, histologia, {mu}ATR-FTIR e microscopia nao-linear

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Moises Oliveira dos

    2012-07-01

    Burns cause changes in the anatomical structure of the skin associated with trauma. The severity of the burn injury is divided into first, second and third-degree burns. The third-degree burns have been a major focus of research in search of more conservative treatments and faster results in repair for a functional and cosmetically acceptable. The conventional treatment is the use of topical natural or synthetic skin graft. An alternative therapy is the laser ablation process for burned tissue necrosis removal due to the no mechanical contact, fast application and access to difficult areas. The purpose of this study is to evaluate the feasibility of using high intensity femtosecond lasers as an adjunct treatment of burned patients. For this study, 65 Wistar rats were divided into groups of five animals: healthy skin, burned skin, two types of treatment (surgical debridement or femtosecond laser ablation) and four different times in the healing process monitoring. Three regions of the back of the animals were exposed to steam source causing third-degree burn. On the third day after the burn, one of the regions was ablated with high intensity ultrashort laser pulses ({lambda} = 785 nm, 90 fs, 2 kHz and 10 {mu}J/ pulse), the other received surgical debridement, and the last was considered the burn control. The regions were analyzed by optical coherence tomography (OCT), histology, attenuated total reflectance infrared spectroscopy using Fourier transform ({mu}-ATR-FTIR), two-photon excitation fluorescence microscopy (TPEFM) and second harmonic generation technique (SHG) on days 3, 5, 7 and 14 pos-treatments. The results showed that with the laser irradiation conditions used it was possible to remove debris from third degree burn. The techniques used to characterize the tissue allowed to verify that all treatments promoted wound healing. On the fourteenth day, the regeneration curve showed that the attenuation coefficient of laser ablated tissue converges to the values of healthy skin, but collagen fibers have not yet reached the same organization of those in the healthy skin. (author)

  19. Assessment of micro, macro, toxic elements (Cd, Hg, Pb) and fatty acids profile in consumed fish commercially available in Cananeia and Cubatao, Sao Paulo State; Avaliacao de micro e macroelementos, elementos toxicos (Cd, Hg e Pb) e acidos graxos, em peixes disponiveis comercialmente para consumo em Cananeia e Cubatao, Estado de Sao Paulo

    Energy Technology Data Exchange (ETDEWEB)

    Curcho, Michel Rodrigues da Silva Morales

    2009-07-01

    Aside from their nutritional importance, fish are considered one of the most important bio indicators in aquatic systems for the estimation of pollution levels by toxic metals. This is so, since fish can bio accumulate these elements and they occupy different trophic levels and present different sizes and age. The purpose of the present study was to contribute with important data for the knowledge of nutritional and toxic constituents in muscles of the most consumed fish species from two coastal regions, Cananeia and Cubatao. Cananeia fish species analyzed were: Micropogonias furnieri (Corvina), Macrodon ancylodon (Pescada), Centropomus undecimalis (Robalo peba) and Mugil platanus (Tainha). From Cubatao, Micropogonias furnieri (Corvina), Macrodon ancylodon (Pescada), Menticirrhus americanus (Perna de moca), Sardella braziliensis (Sardinha) and Mugil liza (Tainha). For this study, analytical methodologies were developed and validated, regarding precision and accuracy, by means of certified reference materials. Micronutrients (Ca, Fe, K, Na, Se and Zn) and some trace elements (As, Br, Co, Cr, Rb) in fish muscle were determined by means of neutron activation analysis (NAA). Cold Vapor Atomic Absorption Spectrometry (CV AAS) was used for total Hg determination and Electrothermal Atomic Absorption Spectrometry (ET AAS) for Cd and Pb determinations. Proximate composition determinations according to AOAC methodologies and fatty acids profiles by gas chromatography were done in these muscle fish samples. Regarding fatty acids profile from the {omega}-6 family, Tainha species pool presented the highest values (8.9%) and Pescada species pool the lowest ones (4.4%) for Cananeia species. Fatty acids from the {omega}-3 family, Sardinha pool species presented the highest values (31.8%) for all species analyzed. Regarding micronutrients content great concentration variations between individual of the same species and between different species were observed. Discriminate analysis was used for the values for micronutrient content for all fish species analyzed in order to identify samples of similar chemical composition and respective food habits. Concerning populational risk to toxic elements exposure, in this case As and Hg, it was possible to conclude that Corvina and Pescada from Cananeia and Corvina, Sardinha and Tainha from Cubatao presented the highest values for As exceeding the Brazilian legislation limits for this contaminant. For Hg, all the species analyzed did not exceed the Brazilian legislation limits for predatory and non predatory species. Results from this study also suggest that Corvina species can be used as a bioindicator since this species bioaccumulate metals and remains in the estuary until it reaches adulthood. Thus, Corvina can be considered as a good indicator of the conditions of the coastal region where it inhabits. (author)

  20. Evaluation of the biological nitrogen fixation (N{sub 2}) contribution in several forage legumes and the transfer of N to associated grasses; Avaliacao da contribuicao da fixacao biologica de N{sub 2} em varias leguminosas forrageiras e transferencia de N para uma graminea consorciada

    Energy Technology Data Exchange (ETDEWEB)

    Vargas, M.S.V.

    1991-12-01

    The objective of experiment 1 was to compare two different techniques for labelling the soil mineral nitrogen with {sup 15} N, for studies to quantify the contribution of biological nitrogen fixation (BNF) to forage legumes using the {sup 15} N isotope dilution technique. The two techniques for labelling the soil were: incorporation a {sup 15} N labelled organic compost (slow release treatment), and split applications of {sup 15} N labelled ammonium sulphate. The evaluation of the techniques was through the quantification of BNF in the Itaguai Hybrid of Centrosema using two non-Na- fixing control plants (P. maximum K K-16 and Sorghum bicolor). The objective of experiment 2 was to quantify the contribution of BNF to forage legumes and the transfer of fixed nitrogen to associated grasses in mixed swards again using the {sup 15} N isotope dilution technique. This study was conducted on a red podzolic soil (Typic Hapludult), with 7 forage legumes and 3 grasses in monoculture, and 3 mixed swards of Brachiaria brizantha with the Centrosema hybrid, Galactia striata and Desmodium ovalifolium, respectively, with varying ratios of grass to legume (4:1 to 1:4). In order to quantify the BNF contributions to the legumes and the transfer of fixed N to the B. brizantha, the plots were amended 8 times with doses of 0.01 g {sup 15} N m{sup -2} of {sup 15} N labelled ammonium sulphate (12.5 atom % {sup 15} N) each 14 days, giving a total of 0.08 g {sup 15} N m{sup -2} of {sup 15} N during the 97 days of the experiment. In monoculture the different forage legumes obtained the equivalent of between 43 and 100 kg N ha{sup -1} from BNF. Stylosanthes guianensis showed the greatest contributions from BNF at 100 Kg N ha{sup -1}. In mixed swards with Brachiaria brizantha the proportion of N derived from BNF in the three legumes studied (Centrosema hybrid, G. striata and D. ovalifolium) was significantly greater than when they were grown in monoculture. (author). 197 refs, 9 figs, 19 tabs.

  1. Stability evaluation and chemical characterization of different vegetable oils viewing the search for candidates for certified reference materials for bio diesel; Avaliacao da estabilidade e caracterizacao quimica de diferentes oleos vegetais visando a busca de candidatos a materiais de referencia certificado (MRC) para biodiesel

    Energy Technology Data Exchange (ETDEWEB)

    Cruz, Georgiana F. da; Fonseca, Mauricio G.; Goncalves, Lenise V.F.; Silva, Regina Celia F. da; Silva, Fernanda M.R. da; Rodrigues, Janaina M. [Instituto Nacional de Metrologia, Normalizacao e Qualidade Industrial (LABOR/INMETRO), Duque de Caxias, RJ (Brazil). Lab. de Analises Organicas; Leal, Rodrigo V.P. [Instituto Nacional de Metrologia, Normalizacao e Qualidade Industrial (LAMBOC/INMETRO), Duque de Caxias, RJ (Brazil). Lab. de Motores, Combustiveis e Lubrificantes], Email: rvleal@inmetro.gov.br; Cunha, Valnei S. [Instituto Nacional de Metrologia, Normalizacao e Qualidade Industrial (DIMCI/INMETRO), Duque de Caxias, RJ (Brazil). Diretoria de Metrologia Cientifica e Industrial

    2009-07-01

    Viewing the characterization of the various vegetable oils aiming to obtain a data bank that allows the production of certified reference materials for bio diesel of different blends, a study of chemical-physical characterization of different oils and derivative of bio diesel.

  2. Evaluation and characterization of ceramic membranes based on Pdms/SiC containing phosphotungstic acid as electrolytes for PEM-FC; Avaliacao e caracterizacao de membranas ceramicas condutoras a base de PDMS/SiC contendo acido fosfotungstico como eletrolito para PEM-FC

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Marcelo de Oliveira; Guimaraes, Danilo Hansen; Boaventura Filho, Jaime Soares; Jose, Nadia Mamede [Universidade Federal da Bahia (IQ/UFBA), Salvador, BA (Brazil). Inst. de Quimica. Grupo de Energia e Ciencias dos Materiais; Barbosa, Diego Augusto Batista; Paschoal, Carlos William de Araujo [Universidade Federal do Maranhao (DF/UFMA), Sao Luis, MA (Brazil). Dept. de Fisica; Almeida, Rafael Mendonca; Tanaka, Auro Atsushi [Universidade Federal do Maranhao (DQ/UFMA), Sao Luis, MA (Brazil). Dept. de Quimica

    2009-07-01

    This work presents the development of membranes with potential use in Proton Exchange Fuel Cells (PEM-FC), consisting of hybrid materials based on poly(dimethylsiloxane), crosslinked with tetraethyl orthosilicate (TEOS), and reinforced with silicon carbide and phosphotungstic acid. The membrane series PDMS/TEOS/SiC/PWA were prepared by the reaction of PDMS and TEOS, 70/30% proportions in mass, catalyzed by dibutyltin dilaurate. SiC was incorporated in a 25% proportion, and PWA in varied proportions (5, 10, 15 and 20%), by weight. The membranes were characterized by Thermo-Gravimetric Analysis (TGA), X-ray Diffraction, Scanning Electron Microscopy and impedance spectroscopy. SiC and PWA addition to the membrane increased both structure organization and material crystallinity. The insertion of PWA provided an increase in the conductivity. However, maximum conductivity was obtained with concentration levels above 10%. The insertion of SiC associated with the PWA did not influence the conductivity for concentrations between 10 and 20%. (author)

  3. Integrated system for the atmosphere numerical simulation and evaluation of weather prognostics for the Rio Paraiba do Sul watershed. Part 1: description of the project and system implanted in Furnas; Sistema integrado de simulacao numerica da atmosfera e de avaliacao de prognosticos de tempo para bacia do Rio Paraiba do Sul. Parte 1: descricao do projeto e do sistema implantado em Furnas

    Energy Technology Data Exchange (ETDEWEB)

    Silva, M.G.A. Justi da; Santos, I.A.; Coelho, D.G.; Menezes, W.F.; Silva, A.S.; Tozzi, L.R.L.; Oliveira, I.C. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Dept. de Meteorologia. Lab. de Prognosticos em Mesoescala]. E-mails: justi@acd.ufrj.br; isimar@acd.ufrj.br; garrana@acd.ufrj.br; wallace@meteoro.ufrj.br; alfredo@acd.ufrj.br; tozzi@ufrj.br; ico@ufrj.br

    2004-07-01

    This work describes the Integrated System for Atmospheric Numerical Simulation and Weather Prognostic for the Paraiba do Sul river, present used in Furnas Power Station. The document presents the used sources for his conception, the applied methodology, and the techniques used in the implantation. The main advantage of the system includes the low cost of acquisition and implantation, by using the non-conventional techniques and equipment, and apply the objective physical results generation in a scale greater than the prior available, including a series of meteorological phenomena relevant to the hydrological operation.

  4. Integrated system for numerical simulation of atmosphere and weather forecasting evaluation for the Rio Paraiba do Sul basin. Part 3: tests on different parametrizations in a ZCAS case; Sistema integrado de simulacao numerica da atmosfera e de avaliacao de prognosticos de tempo para bacia do Rio Paraiba do Sul. Parte 3: testes de diferentes parametrizacoes em um caso de ZCAS

    Energy Technology Data Exchange (ETDEWEB)

    Coelho, D.G.; Silva, M.G.A. Justi da; Santos, I.A.; Menezes, W.F.; Silva, A.S.; Tozzi, L.R.L.; Oliveira, I.C. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Dept. de Meteorologia]. E-mail: garrana@acd.ufrj.br

    2004-07-01

    This work integrates the mesoscale MMS atmospheric model over the Paraiba do Sul river basin using two grids with 27 km and 9 km horizontal spacing respectively. The paper analysed a ZCAS event occurred during the New Year's eve 1999-2000, and the integration period from December 28, 1999 to January 9, 2000. The parametrization of the Schultz microphysics and the Goddard were combined with the Betts-Miller, the Kain-Fritsch versions 1 and 2, and the Grell convection parametrizations aiming the better performance of the regional model in a ZCAS situation wi ch conducted to intense and continuous precipitations along the Paraiba do Sul basin. Statistical tests were implemented aiming to evaluate the model performance compared to the rains observed during the period at the automatic station of Cachoeira Paulista.

  5. Appraisal of the biocide activity of products for the control of microorganisms associated with corrosive processes in the Bacia de Campos pipelines; Avaliacao da acao biocida de produtos para o controle de microrganismos associados a processos corrosivos em oledutos da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Penna, Monica de Oliveira [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas. Setor de Biotecnologia e Ecossistemas]. E-mail: mpena@cenpes.petrobras.com.br; Andrade, Cynthia de Azevedo [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas. Setor de Tecnologia de Materiais, Equipamentos e Corrosao]. E-mail: cynthiaandrade@cenpes.petrobras.com.br; Nascimento, Juliana Rangel do; Silva, Edilson Domingos da; Souza, Leonardo Suhett de [Fundacao GORCEIX, Ouro Preto, MG (Brazil)]. E-mail: julianarn@cenpes.petrobras.com.br; edilson@cenpes.petrobras.com.br; suhett@cenpes.petrobras.com.br

    2001-12-01

    The possible effect of corrosion inhibitors on bacteria has significant interest for the oil and gas industry since, in addition to presenting lower operational costs than biocides due to the low concentrations used, they allow a simultaneous activity on the inhibition of corrosion and adhesion of sulfate reducing-bacteria. In the case of pipes with low BSW oil fluid low, the benefit of using corrosion inhibitors in microorganism combat is even more significant in view of their dispersing characteristics during the oil phase. Herein presented are the laboratorial analysis results of the biocidal effects of six commercial products, four of which having corrosion inhibition function and two with biocidal quality. During this analysis, an oil sample collected from a Petrobras pipeline and a mixed culture of sulfate-reducing mesophilic bacteria (m-BRS) obtained from this sample were used. The study was divided in two phases: the first phase performed in semi-static conditions and, the second phase performed in dynamic conditions (loop). Compositions were analyzed according to their activities regarding the growth control of sulfate-reducing planktonic bacteria, according to their time reducing performance regarding microbial growth (activity) detection and regarding sessile bacteria (pre-adhered bacteria). Results showed that the two biocidal products had the best performance in the presence of oil and that the tetra kishidroximethyl phosphonium sulfate (THPS) at 75% was the most effective. Of the four corrosion inhibitors tested for efficiency regarding BRS growth in solution, three were slightly stimulating and the fourth was intensely stimulating. (author)

  6. Evaluation of chromosome aberration frequency instable in individual groups residents at the municipality of Monte Alegre, Para, Brazil, exposed to radon; Avaliacao da frequencia de aberracoes cromossomicas instaveis em grupos de individuos residentes no municipio de Monte Alegre - PA expostos diferencialmente ao radonio

    Energy Technology Data Exchange (ETDEWEB)

    Yunes, Samira Nogarol

    2010-07-01

    The municipality of Monte Alegre is a region that presents natural radiation high due to the presence of the radionuclide uranium ({sup 238}U) in its soil, which through its decay gives rise to element Rn, a gas. The radioactivity of the rocks has become a problem for the population of Monte Alegre, from the moment when the radioactive material began to be used in the construction of houses and paving of streets. Among all bio markers related to environmental exposures and its biological effects, the chromosomal aberrations are considered good bio markers as predictors of the risk of cancer. Studies suggest that the frequency of chromosomal aberrations may be related to the genetic instability individual and/or exposure to ionizing radiation. Our work aimed to evaluate the frequency of chromosomal aberrations in individuals in the region of high natural radioactivity in Monte Alegre-PA. As well as to correlate the cytogenetic analysis made in this study with the results of analysis of frequency of polymorphisms of genes of DNA repair carried out in another study that resulted in other dissertation. In accordance with the distribution of the data obtained in characterizing environmental radiological and in the calculation of dose, were chosen residents of homes with more and less exposure to radiation. The samples of peripheral blood of 85 individuals of the resident population of the region of Monte Alegre - PA were collected and examine provided two slides for individual was performed to verify the quality of the sample. Through this evaluation we decide that 33% of the material collected, or is, samples of 28 individuals were in suitable conditions for analysis of the frequency of chromosomal aberrations. After the collections lymphocytes present in the sample were cultivated in accordance with the methodology proposed for obtaining of cells in metaphase. were analyzed 6,177 metaphases of 28 individuals among which were found dicentric chromosomes 4 and 19 fragments. The number of chromosomal aberrations exceeded the interval of the values of reference for the frequency of basal dicentric. Thus the exposure to radiation, produced by decay of uranium, in the residences of Monte Alegre is not sufficient to increase the frequency of chromosomal aberrations-type unstable for the study group. We cannot say that the combination of variations polymorphic found in individuals had influences the emergence of aberrations, given that several factors may be involved to the emergence of spontaneous chromosomal aberrations. (author)

  7. Characterization of Ca So{sub 4}:Dy thermoluminescent dosimeters with graphite for absorbed doses evaluation of X-radiation and gamma radiation; Caracterizacao de dosimetros termoluminescentes de CaSo{sub 4}:Dy com grafite para avaliacao de dose absorvida de radiacao X e gama

    Energy Technology Data Exchange (ETDEWEB)

    Daros, Kellen Adriana Curci; Rodrigues, Leticia Lucente Campos; Medeiros, Regina Bitelli [Universidade Federal de Sao Paulo, SP (Brazil). Escola Paulista de Medicina. Dept. de Diagnostico por Imagem

    1996-12-31

    Dosimeters of Ca So{sub 4}:Dy are investigated in pellets with different thickness (0.2 to 0.8 mm) and with graphite contents between 0 and 20% by weight (0; 0.5; 3; 5; 10 and 20%). It is reported that these dosimeters can be used in dose measurements in mixed beta-photons fields. Previous TL results, for these pellets in beta fields are shown. The best results of sensitivity and energy dependence for photons are presented 3 refs., 2 figs.

  8. Alimentos balanceados para perros en Costa Rica

    Directory of Open Access Journals (Sweden)

    Ruth Vargas

    2001-01-01

    Full Text Available Diagnóstico de la comercialización de alimentos balanceados para perros en Costa Rica. Para ampliar los reportes oficiales de la comercialización de alimentos para perros se creó una base de datos que incluyó cantidad, costo, empaque y formulación durante el período 1998 a agosto del 2000. De 1995 a 1998 y de 1996 a 1999 la producción nacional incrementó un 90,4% y la importación un 42,56% respectivamente, ocupando los alimentos nacionales un 72% del tonelaje y un 70% del valor en dólares americanos. No fue posible determinar cuál es el empaque más comercializado, pero si que los alimentos extrusados son los que ocupan el primer lugar y que los alimentos recomendados para cachorros y adultos son los que más se comercializan. La ausencia de datos en las declaraciones sugiere la necesidad de incrementar el control en las mismas en caso de requerirse un estudio de mercado, ya que contrariamente a esta situación el mayor número de garantías inscritas corresponden separadamente para las fases de cachorros y adultos. Merece también atención que las garantías indican mayores porcentajes de proteína cruda que los recomendados por la AAFCO y que al menos 36 fórmulas son recomendadas para estados sanitarios específicos (p.e. para perros con problemas de alergias, cálculos renales, pérdidas de pelo, etc. sin que oficialmente se encuentre registrada ninguna fórmula medicada

  9. Studies on Bis(Para Anisidine Acetylacetonato) Nickel (II) Complex ...

    African Journals Online (AJOL)

    Studies on Bis(Para Anisidine Acetylacetonato) Nickel (II) Complex. HN Aliyu, UL Bilyamin. Abstract. Schiff base was prepared from the reaction of para anisidine and acetylacetone. Bis(para anisidineacetylacetonato)nickel(II) complex was synthesized by the reaction of the prepared para anisidineacetylacetone ligand and ...

  10. Computed tomography evaluation of loco-regional involvement of squamous cell carcinoma of the vocal cord; Avaliacao por tomografia computadorizada do envolvimento loco-regional do carcinoma espinocelular de corda vocal

    Energy Technology Data Exchange (ETDEWEB)

    Paiva, Roberto Guido Santos; Rapoport, Abrao [Complexo Hospitalar Heliopolis, Sao Paulo, SP (Brazil). Curso de Pos-graduacao em Cirurgia de Cabeca e Pescoco; Souza, Ricardo Pires de [Complexo Hospitalar Heliopolis, Sao Paulo, SP (Brazil). Servico de Diagnostico por Imagem; Soares, Aldemir Humberto [Colegio Brasileiro de Radiologia, Sao Paulo, SP (Brazil)]. E-mail: ricapires@ig.com.br

    2001-08-01

    We reviewed the case notes and computed tomography scans of 22 patients with squamous cell carcinoma of the vocal cord, in the period between 1992 and 1998. Interobserver concordance for all cases and accuracy and concordance between the methods for the operated patients were evaluated using the kappa test. Concordance was classified as follows: excellent for evaluating tumoral involvement of the thyroid and cricoid cartilages, extra laryngeal extension and lymph node staging; very good for tumoral involvement of vocal cords, posterior commissure and para glottic space; good for tumoral involvement of the supraglottic and sub glottic regions and tumoral staging; regular for tumoral involvement of the anterior commissure and arytenoid cartilage. The combination of clinical and computed tomography evaluation for T staging resulted in an accuracy and concordance with the pathological results of 89.47% and 84.9%, respectively, which were superior to isolated clinical or computed tomography analysis. The accuracy and pathological concordance of computed tomography for N staging was 100%, which was superior to clinical evaluation. (author)

  11. Sustainable charcoal use in iron and steel industry in Carajas region, Brazil; Avaliacao do potencial brasileiro de florestas plantadas na reducao da concentracao do carbono atmosferico: o caso do polo guseiro de Grande Carajas

    Energy Technology Data Exchange (ETDEWEB)

    Pinaud, Rodrigo Zambrotti [AJR Engenharia - Seguranca, Meio Ambiente e Saude Ltda. (Brazil)

    2004-07-01

    Concern about greenhouse gas emissions and global climate change has raised awareness that forest-management strategies have a large potential for storing and absorbing carbon from the atmosphere. Other measures under consideration include the use of renewable biomass as a substitute for fossil fuel use. This thesis shows the potential of charcoal from renewable Eucalyptus plantations for reducing CO{sub 2} emissions by replacing charcoal from the harvest of native forest in the iron and steel industry located at Carajas region, state of Para, Brazil. The results show that, if deforestation in the Carajas region were stopped and substituted by renewable forests for charcoal production, within a 21-year time horizon some 470.000 hectares of native Amazon forests could be preserved, avoiding the emission of some 2.67 x 10{sup 6} tC/yr to the atmosphere, which is 3.2% of the current carbon emissions from fossil fuel consumption in Brazil (82,4 x 10{sup 6} tC/yr) at a cost of 2,65-3,84 US$/tC. (author)

  12. Cross-elicitation responses to 2-methoxymethyl-para-phenylenediamine in para-phenylenediamine-allergic individuals

    NARCIS (Netherlands)

    Schuttelaar, M.-L.; Coenraads, P.-J.; Blömeke, B.; Goebel, C.

    2016-01-01

    The introduction of a methoxymethyl side chain into para-phenylenediamine (PPD) resulted in the development of a new hair dye molecule: 2-methoxymethyl-para-phenylenediamine (Me-PPD). Besides having excellent hair colouring properties, this PPD derivate has significantly lower skin-sensitizing

  13. LITERATURA PARA JOVENS LEITORES: UMA PROPOSTA

    Directory of Open Access Journals (Sweden)

    Gizelle Kaminski Corso

    2011-08-01

    Full Text Available Percebendo que o público-alvo das adaptações de textos clássicos não é tão somente a criança e o adolescente – leitores jovens, aos quais supostamente destinam-se as literaturas “infantil” e “infantojuvenil”, proponho neste texto uma nova classificação para as adaptações literárias, vendo-as não mais apenas como “adaptações para a literatura infantojuvenil”, mas como “literatura para jovens leitores”. Como tais textos são também lidos por adultos, por propósitos diversos, reconheço que o conceito proposto abrange um número maior de leitores. Para tanto, faço um breve percurso histórico-crítico acerca do aparecimento das adaptações no cenário literário brasileiro com a finalidade de corroborar e justificar a pertinência da classificação sugerida para as adaptações.

  14. Modelo para el análisis de una aptitud cognitiva para el aprendizaje

    Directory of Open Access Journals (Sweden)

    Clara Cecilia Uribe Hernández

    2009-01-01

    Full Text Available La investigación en el campo de las aptitudes cognitivas para el aprendizaje requiere una forma de abordarlas y definir sus características y componentes. A su vez, esta definición debe conducir al investigador a la creación de pruebas de medición que ayuden al análisis de este tipo de aptitudes y su relación con otras variables del aprendizaje. Para dar respuesta a esas necesidades, el objetivo de este artículo es proponer la creación de un modelo para el análisis de una aptitud cognitiva para el aprendizaje, cuya estructura conste de cuatro elementos principales. Dos de ellos relacionados con los enfoques y consideraciones para emprender su estudio; los otros dos, con la definición de la aptitud, a través de sus características y sus componentes.

  15. Libertad religiosa, camino para la paz

    Directory of Open Access Journals (Sweden)

    Antonio Alonso

    2011-01-01

    Full Text Available La libertad religiosa es el núcleo del Mensaje para la XLIV Jornada Mundial de la Paz que ha dirigido Benedicto XVI. Cuestión, sin duda, extraordinariamente delicada, pues comporta graves implicaciones en materia de seguridad principalmente por dos motivos: primero, porque su violación supone una injusticia difícil de compaginar con el respeto a los Derechos Humanos; segundo, porque dicha libertad no puede ser esgrimida como pretexto para atropellar los derechos de los demás conciudadanos o incluso socavar la propia seguridad del Estado. El Santo Padre denuncia, a su vez, los estragos del relativismo y de los fanatismos, tanto religioso como anti-religioso, y propone el ejercicio del diálogo basado en la razón para superar los obstáculos en la convivencia interpuestos por estas amenazas a la paz y la seguridad.

  16. Rutina AUTOLISP para el despiece de columnas

    Directory of Open Access Journals (Sweden)

    Lorena Cocunubo Carreño

    2014-06-01

    Full Text Available El proyecto de creación de una herramienta Autolisp para el dibujo automático de los despieces de vigas sometidas a flexión y a cortante se desarrolla en un ambiente de programación informática LISP. Se inicia con la programación en el Visual Lisp de AutoCAD del algoritmo que permite tomar información de anchos de luz, sección transversal y momentos resistentes la viga para que automáticamente ejecute los comandos y el resultado final sea un despiece detallado de los hierros por flexión junto con los estribos por cortante separados adecuadamente. Los resultados están sujetos a criterios de diseños de la NSR-10 para así garantizar la seguridad del diseño sísmico.

  17. Nuevo lenguaje para un nuevo medio

    Directory of Open Access Journals (Sweden)

    Inma Martín Herrera

    2014-12-01

    Full Text Available El concepto tradicional de comunicación unidereccional se ha roto para convertirse en comunicación pluridireccional que permitirá la retroalimentación informativa. Las nuevas formas de redactar, contar diseñar y presentar la información en Internet exige nuevos hábitos de lectura por parte de la audiencia. El lector deberá tomar conciencia de que está frente a un medio diferente con el que debe familiarizarse para hacer uso correcto del soporte digital, se informará adecuadamente para disfrutar de las ventajas del innovador medio, conocido como Periodismo de servicios o Nuevo Periodismo.

  18. Estrategias de mercado para el frijol centroamericano

    Directory of Open Access Journals (Sweden)

    Lourdes Mart\\u00EDnez

    2004-01-01

    Full Text Available Estrategias de mercado para el frijol centroamericano. En los últimos años, el sub-sector de frijol en Centro América ha sido testigo de varios cambios dinámicos. Si no se encuentran medidas para incrementar la competitividad regional de este sub-sector, los países centroamericanos experimentarán impactos negativos en las áreas sociales y económicas de considerable magnitud, especialmente ahora que Centro América necesita ajustar su economía a los nuevos requerimientos de mercados mas abiertos, como el Tratado Centroamericano de Libre Comercio con USA (TLC. Vendedores de frijoles a nivel intermediario y de consumo final, así como técnicos de oficinas gubernamentales dedicadas al mercadeo de frijoles en Centro América fueron entrevistados para documentar los cambios experimentados, identificar los obstáculos que frenan la viabilidad del sub-sector e identificar las oportunidades de incremento de mercados en el futuro para los productores y vendedores de frijol. Los resultados muestran que para que continúen siendo competitivos, los países centroamericanos deben incrementar la productividad a través del apoyo a las investigaciones para el mejoramiento de variedades de frijol, especialmente aquellas que los consumidores prefieren por características específicas (e.g. color. También es imprescindible el fortalecimiento de los programas de distribución de variedades mejoradas a los productores; las mejoras en la transmisión de información de mercado a los productores; el fortalecimiento de los contactos entre productores, comercializadores a nivel mayorista y supermercados; y una política más específica de apertura de mercados de exportación, especialmente con los Estados Unidos.

  19. Oxitocina: nuevas perspectivas para una droga antigua

    Directory of Open Access Journals (Sweden)

    Steven L. CLARK

    2010-12-01

    Full Text Available La oxitocina es el medicamento más comúnmente asociada con la prevención de complicaciones perinatales y recientemente fue incluida por el Instituto para la Administración Medicamentosa Segura (Institute for Safe Medication Practices - ISMP en una pequeña lista de medicamentos “con alto grado de riesgos”, lo que puede “necesitar salvaguardas especiales para reducir el riesgo de error”. Las recomendaciones actuales para administrar este medicamento son vagas en relación a la indicación, tiempo de uso, dosis y el monitoreo de los efectos maternos y fetales. Una revisión de los datos clínicos y farmacológicos disponibles sugiere que las orientaciones específicas y basadas en evidencias para administrar oxitocina durante el parto puede derivarse de datos disponibles. Si implementadas, estas prácticas pueden reducir la probabilidad de daños al paciente. Esto sugiere el foco de las orientaciones para la administración electiva limitada de oxitocina, considerar estrategias que disminuyan la necesidad de usar oxitocina, confiar en terapéuticas de bajas dosis de oxitocina, la adhesión a definiciones semicuantitativas específicas sobre parto adecuado e inadecuado, y la aceptación de que, una vez que la actividad uterina adecuada sea alcanzada, es generalmente preferible esperar más tiempo que aumentar la infusión de oxitocina. El uso de protocolos conservadores y específicos para monitorear los efectos de la oxitocina en la madre y en el bebé tiende no sólo a aumentar los resultados, mas también a reducir los conflictos entre miembros del equipo obstétrico. Implementar estas orientaciones parece ser apropiada en una cultura cada vez más focalizada en la seguridad del paciente.

  20. Star Wars: fuga para o mito

    OpenAIRE

    Sousa, Marco António Couto

    2012-01-01

    Esta tese propõe-se a procurar explicações para a popularidade da saga de filmes levando em linha de conta o contexto cultural e histórico no qual A Guerra das Estrelas encontrou a sua génese. Desde os primeiros anos de vida do mentor da saga, George Lucas, fontes de inspiração para a série de filmes são exploradas, e ligações são estabelecidas com outros objectos culturais previamente existentes ou posteriores à saga. Premissa central a esta tese é a de que A Guerra das Estrelas veicula, ...

  1. competencias jurídicas para Colombia

    Directory of Open Access Journals (Sweden)

    Hernán Alejandro Olano García

    2007-01-01

    Full Text Available El autor desea presentar un propuesta de competencias específicas en derecho dentro del proyecto Tuning América Latina, para lo cual, con las restringidas fuentes de información existentes, desarrolla la historia del proceso y nos presenta además algunas consideraciones sobre la formación por competencias y el proyecto formativo, o programa de derecho constitucional Colombiano, en el que incluye cuatro de las competencias Tuning europeas para el desarrollo de la ruta formativa de su asignatura.

  2. Psicologias sociais responsivas para com animais

    OpenAIRE

    Galindo,Dolores

    2016-01-01

    Neste ensaio, abordamos algumas pistas para pesquisas que se movam na interface entre Psicologia Social e Etologia, discutindo relações responsivas com animais, com base nas contribuições de Vinciane Despret. Argumentamos que a Etologia, ao ficar apartada das correntes críticas da Psicologia Social, na América Latina, após a crise da década de 1970, mostra-se um campo para o diálogo fértil com psicólogos sociais não evolucionistas que se interessam pelo estudo de agenciamentos não restritos a...

  3. Desenvolvimento de sonda gama para cirurgia radioguiada

    OpenAIRE

    José Oliveira da Silva, Iran

    2008-01-01

    O uso de técnicas de cirurgia radioguiada tem crescido e tem se mostrado muito eficiente para as cirurgias de câncer. O procedimento inicia-se antes da cirurgia com a administração ao paciente de um radiotraçador, geralmente emissor gama, que tem grande afinidade pelas células tumorais. Durante a cirurgia, uma sonda detectora de radiação gama é usada para identificar as regiões em que houve maior concentração do material radioativo e, portanto, os locais de células tumorais. ...

  4. Plan de marketing para Gik Live!

    OpenAIRE

    Macua Quintanilla, María

    2016-01-01

    El objetivo de este Trabajo de Fin de Grado (TFG) es elaborar un Plan de Marketing para la empresa Gik Live! S.L. A través de un análisis del sector y de la empresa, hemos detectado cuáles son las oportunidades y las amenazas a las que la empresa se enfrenta así como sus fortalezas y debilidades. Tras dicho análisis, hemos elaborado una serie de objetivos, estrategias y planes de acción que deberán ser llevados a cabo para mejorar la experiencia de compra y satisfacción del cliente. P...

  5. Espacio urbano para el desarrollo sostenible

    Directory of Open Access Journals (Sweden)

    Guillermo Malca Obregoso

    2015-04-01

    Full Text Available Este artículo ilustra una Metodología de Análisis-Propuesta Urbana Sostenible para la enseñanza-aprendizaje del diseño urbano-arquitectónico conciente de su entorno socio-cultural-ambiental. Se presenta como alternativa a los métodos convencionales de intervención urbana. Pretende, a partir de la visión dialéctica, entender los problemas originados por el crecimiento de las ciudades de modo INTEGRAL, sin segmentarlos para su estudio parcializado y parcelado.

  6. Motor de deferred render para XNA

    OpenAIRE

    Cruz Fortún, Gabriel de la

    2013-01-01

    Este proyecto propone una arquitectura alternativa de renderizado para el motor de desarrollo de videojuegos XNA. Esta arquitectura utilizará el modelo de renderizado en diferido (deferred render) en lugar de usar las funciones habituales del motor de XNA. En concreto, se utilizará deferred shading aunque sería sencillo pasar a deferred lighting para utilizar materiales más complejos. El desarrollo de esta arquitectura se realizará en tres pasos principales. En el primer paso será necesar...

  7. Sinopsis de Aristida (Poaceae para Uruguay

    Directory of Open Access Journals (Sweden)

    F Lezama

    2012-06-01

    Full Text Available Se presenta una sinopsis de Aristida para Uruguay, incluyendo una clave a nivel de especie. Se cita por primera vez para Uruguay Aristida flaccida Trin. & Rupr. a partir de material recolectado en pastizales de la zona de sierras del noroeste del departamento de Treinta y Tres.; esta especie es descripta e ilustrada.Synopsis of Aristida (Poaceae for Uruguay. A synopsis of Aristida for Uruguay is presented, including a key to its species. Aristida flaccida Trin. & Rupr. is reported for the first time for the flora of Uruguay from material collected in hilly grasslands in the northwestern of Treinta y Tres department; this species is described and illustrated.

  8. Telecapacitados: teletrabajo para personas con discapacidad

    OpenAIRE

    Riegner, Marina Verónica

    2009-01-01

    Telecapacitados: Teletrabajo para la inclusión laboral de personas con discapacidad es el resultado de más de un año de investigación en 9 países de América Latina y el Caribe: Argentina, Brasil, Chile, Colombia, El Salvador, México, Perú, República Dominicana y Uruguay. Este estudio, que fue posible gracias al financiamiento del Centro Internacional de Investigaciones para el Desarrollo (IDRC) de Canadá y se realizó en la Comisión TIC de USUARIA ha buscado demostrar que el teletrabajo o t...

  9. Abordagens para a sintonia de comandos SQL

    OpenAIRE

    Arlino Henrique MagalhÃes de AraÃjo

    2012-01-01

    Sistemas Gerenciadores de Bancos de Dados (SGBDs) permitem especificar comandos, por meio de linguagens declarativas de alto nÃvel, como SQL Structured Query Language), por exemplo, com a finalidade de executar diferentes operaÃÃes sobre os dados armazenados (consultas, atualizaÃÃes, inserÃÃes e remoÃÃes). O otimizador de consultas à o mÃdulo do SGBD responsÃvel por escolher um plano de execuÃÃo eficiente para cada comando SQL a ser executado. Para este propÃsito, os otimizadores procuram,...

  10. Educar y comunicar para la diferencia

    Directory of Open Access Journals (Sweden)

    Daniel Prieto Castillo

    2015-01-01

    Full Text Available El autor reflexiona en torno al pensamiento de Simón Rodríguez y Paulo Freire, enfatiza en la importancia de la educación para la diferencia, la educación para la transformación de las sociedades, frente a un igualamiento por exclusión y por opresión. Sobre la base de su experiencia educativa, planea la validez de la mediación pedagógica que acompaña el aprendizaje, es decir, a la tarea de construirse y de apropiarse el mundo y de uno mismo, desde el umbral del otro.

  11. Desarrollo de Nuevas Correlaciones para Flujo Anular

    OpenAIRE

    Berna Escriche, César; Escrivá Castells, Facundo Alberto; Muñoz-Cobo González, José Luís; Herranz, L.E.

    2013-01-01

    El presente trabajo explora la extensa literatura existente y propone nuevas correlaciones para el estudio del flujo anular. El interés de este trabajo se centra, por una parte, en la recopilación de la dispersa y abundante información existente y, por otra parte, en el desarrollo de nuevas correlaciones para la determinación de las principales magnitudes que caracterizan al flujo anular a partir de datos experimentales encontrados en la literatura abierta Berna Escriche, C....

  12. CONOCIMIENTO CAMPESINO... ¿CIENCIA PARA QUÉ?

    OpenAIRE

    Santillán, Trinidad Alemán

    2015-01-01

    Con base en la experiencia de varios años de investigación de laagricultura campesina en las montañas del sureste de México (“Los Altos de Chiapas”), se argumenta sobre la existencia de un método para generarconocimientos agrícolas diferente al que sigue la ciencia. Este “métodocampesino para generar conocimiento” está vigente en las comunidadesrurales mexicanas y a lo largo del tiempo ha generado sistemas productivos, tecnologías agrícolas y materiales genéticos que son una alternativa a los...

  13. Propuestas para combatir la contabilidad creativa

    OpenAIRE

    Oriol Amat Salas; Ester Oliveras

    2004-01-01

    Los escándalos contables han reavivado el interés en combatir la contabilidad creativa. Este artículo analiza la naturaleza de esta problemática y los aspectos de la normativa que la afectan. Incluye el ejemplo de una empresa real para visualizar los efectos que los maquillajes contables, amparados en la normativa contable española y en las Normas Internacionales de Contabilidad, pueden provocar en el resultado. Al final, se proponen medidas para mejorar la credibil...

  14. Cirugía Para La Obesidad

    OpenAIRE

    Colquitt, Jill L; Picot,Joanna; Loveman, Emma; Clegg, Andrew J

    2012-01-01

    Antecedentes: Se considera la cirugía bariátrica (para la disminución del peso) como un tratamiento de la obesidad cuando han fracasado otros tratamientos. Los efectos de los procedimientos bariátricos disponibles son inciertos comparados con el tratamiento médico y entre ellos. Ésta es una actualización de la revisión sistemática Cochrane publicada por primera vez en 2003 y actualizada en 2005. Objetivo: Evaluar los efectos de la cirugía bariátrica para la obesidad. Estratégia de búsqu...

  15. Espacio urbano para el desarrollo sostenible

    Directory of Open Access Journals (Sweden)

    Guillermo Malca Obregoso

    2004-01-01

    Full Text Available Este artículo ilustra una Metodología de Análisis-Propuesta Urbana Sostenible para la enseñanza-aprendizaje del diseño urbano-arquitectónico conciente de su entorno socio-cultural-ambiental. Se presenta como alternativa a los métodos convencionales de intervención urbana. Pretende, a partir de la visión dialéctica, entender los problemas originados por el crecimiento de las ciudades de modo INTEGRAL, sin segmentarlos para su estudio parcializado y parcelado.

  16. Gobierno de las TI para universidades

    OpenAIRE

    Fernández Martínez, Antonio; Llorens Largo, Faraón

    2011-01-01

    Entre los objetivos de esta publicación están el establecer la importancia del gobierno de las TI, describir sus fundamentos y presentar las herramientas disponibles para implementarlo en una organización. Se presenta con detalle la norma ISO 38500, COBIT y el modelo GTI4U, que se ha desarrollado para ser utilizado en el ámbito universitario. Cabe destacar que incluye una descripción detallada de cómo implementar el gobierno de las TI en una universidad. La CRUE pretende que estos conten...

  17. USO DE GEOTECNOLOGIAS PARA O ESTABELECIMENTO DE ÁREAS PARA CORREDORES DE BIODIVERSIDADE

    Directory of Open Access Journals (Sweden)

    Ana Paula Garcia Oliveira

    2015-08-01

    Full Text Available RESUMOCorredores de biodiversidade são estruturas ambientais com a finalidade de conservar e recuperar a biodiversidade. Aplicam-se, principalmente, a áreas degradadas pelo desenvolvimento humano desordenado, que favorece a fragmentação florestal e a perda da conectividade entre os diversos hábitats. Utilizando o sensoriamento remoto e sistemas de informações geográficas, buscou-se identificar áreas para atuarem como corredores de biodiversidade, possibilitando, assim, o fluxo gênico entre os fragmentos remanescentes e as áreas de preservação permanente. Para tanto, foi realizada uma análise espacial dos fragmentos remanescentes em São Gabriel do Oeste, Mato Grosso do Sul, através de sua forma, tamanho e localização. Foram identificadas as áreas para os corredores a partir da localização de fragmentos com potencial, ou seja, de tamanho e conservação adequados, além de considerar a carta de classes das terras para mecanização e o mapa de áreas prioritárias para a conservação do Ministério do Meio Ambiente, permitindo a escolha de melhores áreas para corredores de biodiversidade. Verificou-se que as geotecnologias são importantes ferramentas de auxílio na determinação de áreas propícias para a análise integrada da paisagem, bem como de áreas propícias para implantação de corredores, gerando um cenário alternativo para a recuperação ambiental, o zoneamento ecológico e a conservação ambiental.

  18. Procedimiento para el cierre de canteras de materiales para construcción en Cuba

    OpenAIRE

    Julio Montero-Matos; José Otaño-Nogel; Diosdani Guerrero-Almeida

    2016-01-01

    Con el propósito de facilitar a los concesionarios de canteras de materiales para la construcción una herramienta metodológica para efectuar el cierre de estas y garantizar una minería sostenible se propuso un procedimiento en seis etapas a partir del diagnóstico realizado en 22 canteras, ubicadas en tres regiones mineras cubanas. El procedimiento busca disminuir los impactos ambientales provocados por la explotación de las canteras y ofrecer a la industria un estándar para lograr uniformidad...

  19. Oportunidades para la Innovación en Urbanismo para Arquitectura

    OpenAIRE

    Pérez-delHoyo, Raquel; Martí Ciriquián, Pablo; Garcia-Mayor, Clara; Nolasco-Cirugeda, Almudena; Serrano-Estrada, Leticia; Quesada Polo, Jesús; Mínguez Martínez, Enrique

    2016-01-01

    En la presente Memoria se presenta la documentación elaborada para el desarrollo de las guías docentes de las asignaturas de Urbanismo en el Grado en Fundamentos de la Arquitectura de la Universidad de Alicante, para el próximo curso 2015-2016. De acuerdo a las estrategias de la Unión Europea y los criterios de elaboración de las memorias para la verificación de los títulos de grado, se ha tratado de iniciar el proceso de revisión, comenzando a repensar las guías docentes sobre una estructura...

  20. Música en el software educativo para adolescentes

    National Research Council Canada - National Science Library

    Neiret, Sara Noemi

    2012-01-01

    ...: “El uso adecuado de la música como recurso de ambientación de los textos literarios incluidos en el software educativo para adolescentes promueve un marco facilitador de la comprensión de los textos...

  1. ¿Para qué conmemorar?

    Directory of Open Access Journals (Sweden)

    Javier Esteinou Madrid

    2015-01-01

    Full Text Available El autor se cuestiona el para qué conmemorar los 500 años de la conquista española e invita a reflexionar como hombre contemporáneo y no desde el olvido pidiendo que la sociedad se humanice. Descubra su identidad y valorice su cultura.

  2. Ciencia y Espacios para las Mujeres

    OpenAIRE

    Arana Sáenz, Imelda

    2005-01-01

    Hacer uso público de la palabra y reivindicar y reinterpretar con la palabra nuevos espacios para las mujeres fueron atrevimientos que se permitieron algunas mujeres del Medioevo, quienes decidieron enfrentar con la escritura la resistencia de la sociedad de entonces a que el sexo femenino hicieran tal cosa.

  3. Vendaje funcional para la ''mano abierta''

    OpenAIRE

    Rochina, Iván

    2013-01-01

    Se muestra la aplicación de un vendaje funcional para el tratamiento de las molestias ocasionadas por la distensión de los ligamentos propios de los huesos del carpo; Producción: SFPIE(www.uv.es/sfpie)|VLC Campus (www.vlc-campus.com)

  4. FOTOBIORREACTOR: HERRAMIENTA PARA CULTIVO DE CIANOBACTERIAS

    Directory of Open Access Journals (Sweden)

    Luis Guillermo Ramírez Mérida

    2014-05-01

    Full Text Available Las cianobactérias son organismos eficientes en la conversión de energía solar y producen una gran variedad de metabolitos. En la actualidad son el centro de atención para la producción de biocombustible, son usadas como biofertilizantes, control de contaminación ambiental y como fuente de nutrientes en alimentación humana y animal. Con el fin de proporcionar crecimiento y aprovechar el potencial de las cianobacterias, se requieren fotobiorreactores eficientes. Aunque se han propuesto muchos tipos de fotobiorreactores, no existe un reactor ideal, solo unos pocos pueden utilizarse para la producción de biomasa de cianobacterias. De hecho, la elección del fotobiorreactor más adecuado depende de la situación, ya que tanto las especies de algas disponibles y el destino final jugarán un papel importante. Uno de los principales factores que limita su aplicación práctica en cultivos de biomasa es la transferencia de masa. Por esto, entender el coeficiente de transferencia de masa en los fotobiorreactores es necesario para una operación eficiente del cultivo de biomasa en cianobacterias. En esta revisión, se discuten varios tipos de fotobiorreactores muy promisorios para la producción de biomasa de cianobacterias.

  5. Premissas para o Ensino Superior do Design

    Directory of Open Access Journals (Sweden)

    André Luis Marques da Silveira

    2016-12-01

    Full Text Available Este artigo aborda a temática da Educação Superior e objetivo identificar premissas para o Ensino em Design no Brasil. Para tanto, efetua um estudo dos conteúdos das comunicações da área em periódicos e livros quanto ao assunto. O método de investigação utilizado foi a análise de conteúdo e observou as seguintes etapas de investigação: registro de dados, interpretação inferencial e categorização. Num primeiro momento, identifica a frequência do aparecimento de índices lexicais quanto ao relato de problemas no processo de Ensino-aprendizagem do Design e as proposições para o seu enfrentamento. Procede uma interpretação inferencial destes dados e, por fim, propõe como resultado, um conjunto de doze premissas que devem ser observadas quanto ao Ensino Superior em Design, a saber: 1 Incentivar o empreendedorismo; 2 Nivelar a Formação; 3 Desenvolver estrategistas; 4 Pensar a ética na atuação profissional; 5 Educar para o social; 6 Valorizar os ideias humanistas; 7 Repensar as estruturas acadêmicas; 8 Focar na aprendizagem baseada em problemas; 9 Aceitar os novos paradigmas; 10 Fomentar o pensamento crítico reflexivo; 11 Estimular a transdisciplinaridade; 12 Focar nas economias emergentes.

  6. ¿Para que la historia?

    Directory of Open Access Journals (Sweden)

    Jaime Jaramillo Uribe

    1998-08-01

    Full Text Available Para qué sirve la historia?. ¿Puede el conocimiento del pasado darnos pautas para comprender el presente? Sobre este, como sobre tantos problemas teóricos de la historia, se han realizado largos e inacabados debates entre historiadores y filósofos. En este ensayo se acepta como eficaz la hipótesis de que conocer el origen y el desarrollo de un proceso es buen fundamento para explicarse una situación final. En el caso de la historia colombiana, se parte de la base de que al producirse la independencia nacional en 1820, para quienes tenían la responsabilidad de dirigir el nuevo país había cuatro problemas o retos fundamentales: 1. Dar una organización política al nuevo Estado; 2. Reorientar el proceso de la economía nacional; 3. Crear un sistema educativo y darle un nuevo contenido a la enseñanza; 4. Transformar una sociedad de castas heredadas de la época colonial en una sociedad de ciudadanos en sentido moderno. Dentro de una visión sintética de esos cuatro procesos, se trata de ver qué cambios se han verificado en el transcurso de 150 años y qué queda pendiente del intento de responderá esos cuatro retos históricos.

  7. A etnomusicologia serve ainda para alguma coisa?

    OpenAIRE

    Laborde, Denis E.; Castro, Beatriz Magalhães

    2008-01-01

    Cinquenta anos, para uma disciplina científica, é muito pouco. A etnomusicologia é, portanto, uma disciplina jovem. Se comparadas à etnomusicologia, a sociologia e a etnologia – estas disciplinas sob o embaraçoso apadrinhamento das quais a etnomusicologia tem tentado se desenvolver – exercem papel de patriarcas.

  8. Intrapulpal temperature during preparation with the Er:YAG laser: an in vitro study; Avaliacao da temperatura intrapulpar de incisivos bovinos irradiados com o laser de Er:YAG

    Energy Technology Data Exchange (ETDEWEB)

    Geraldo-Martins, Vinicius Rangel

    2003-07-01

    This study evaluated the variation of the pulp chamber temperature when dentine, with 2,0 mm of thickness, adjacent to the pulp, was irradiated by the Er:YAG laser. Seventy two bovine incisors were used, that had the enamel and dentine of the buccal surface weared until to reach the thickness used in this study. The teeth were divided in 3 groups, according with the repetition rate used ( Group I = 2 Hz; Group II = 4 Hz and Group III = 6 Hz), and irradiated, with or without water cooling, using 250, 300 and 350 mJ of energy per pulse. Thermocouples were introduced inside the pulp chamber through the palatine opening of the samples and fixed to the vestibular wall of the pulp chamber using a thermal paste. After the statistical analysis, it was verified that there was a decrease of the intrapulpal temperature for all of the parameters in the group I irradiated with water cooling. In the same group, but without cooling, occurred increases of the intrapulpal temperature, however they were less than 2 deg C. In the group 11, only the para meter 350 mJ/4 Hz/ with water cooling presented decrease of the temperature (-0,08 deg C). The other irradiations presented increase of the intrapulpal temperature, varying from 1,5 to 1,9 deg C for irradiations without cooling and of 0,03 the 0,58 deg C for the samples irradiated under water cooling. In the group III, all of the samples presented increase of the intrapulpal temperature, however, they were smaller than to 2,5 deg C. The conditions of this study allow to conclude that the use of the laser of Er:YAG promoted acceptable temperature increases inside the pulp chamber, not reaching the critical level of 5,5 deg C. However, in spite of the temperature variations inside the pulp chamber have not reached critical levels, this procedure should not be recommended because macroscopic observations of the dentine irradiated without water cooling showed dark lesions, suggesting carbonization of this tissue. (author)

  9. Retos para la agricultura en Costa Rica

    Directory of Open Access Journals (Sweden)

    Oscar Arias M.

    2005-01-01

    Full Text Available Retos para la agricultura en Costa Rica es un análisis crítico del desarrollo agrícola de Costa Rica de los últimos 25 años. La diversificación agrícola que promovió Costa Rica en la década de los ochenta, permitió ampliar la oferta exportable y reducir la vulnerabilidad de la dependencia económica de productos tradicionales, como café y banano. Los retos de la economía global y el establecimiento de tratados comerciales con muchos países, hacen necesario que el país promueva en el sector agrícola la exportación con mayor valor agregado, para lo cual es necesario una modernización y reconversión productiva, ya que el modelo actual está agotado. Debemos mejorar sustancialmente los bienes y servicios que ofrecemos; para este propósito, algunos aspectos como la imagen de marca del país con tradición democrática, respeto a los derechos laborales, así como las buenas prácticas de manejo ambiental, deben publicitarse. Como una herramienta clave para la incorporación de mayor valor agregado a nuestra producción agrícola, debemos promover la inversión en investigación y desarrollo, que históricamente ha sido escasa (0,4% del PIB. En vista de que el Estado Costarricense ha demostrado una incapacidad crónica para impulsar la ciencia y la tecnología como una herramienta para nuestro desarrollo, se propone un estímulo a la inversión privada y el fortalecimiento de una alianza con el Estado y las universidades. Se analiza la conveniencia del fortalecimiento de la autosuficiencia alimentaria y de que las empresas pequeñas y medianas jueguen un papel más activo en la agro-exportación. Respecto a los tratados comerciales que se han venido negociando, se considera la conveniencia para el país, ya que son instrumentos para integrar nuestro quehacer económico a nivel mundial, y nuestro deber es el de luchar para que el sector agropecuario tenga oportunidad de subsistir competitivamente según esas nuevas reglas y

  10. The Unification of Astrometric Catalogues

    Science.gov (United States)

    Stock, J.; Abad, C.

    1988-06-01

    RESUMEN Se desarrolla un metodo de interpolaci6n para detectar diferencias sistematicas entre catalogos de posiciones y movimientos propios y se aplica a los catalogos AGK3 y Santiago 67, usando los cata'logos No. 1 y No. 2 del Cfrculo Meridiano Carlsberg como sistema de referencia. ABSTRACT An interpolation mechanism is developed for the detection of systematic differences between position and proper motion catalogues and is applied to the AGK3 and Santiago 67 catalogues, using the Carlsberg Meridian Circle catalogues No. 1 and No. 2 as reference sources. Key words: ASTROMETRY

  11. PAISAJES PARA UN DESARROLLO SUSTENTABLE Y PARTICIPATIVO

    Directory of Open Access Journals (Sweden)

    RAFAEL MATA OLMO

    2014-01-01

    Full Text Available El texto se ocupa del renovado sentido del paisaje que, a partir de diversas tradiciones disciplinares contemporáneas, ha adoptado el Convenio del Paisaje, un tratado internacional promulgado por el Consejo de Europa en el año 2000. La primera parte trata del concepto adoptado por el citado Convenio, que entiende el paisaje como el carácter de cada territorio, percibido socialmente y resultado de la interacción de hechos y procesos naturales y/o humanos. La segunda aborda las bases metodológicas de la caracterización y valoración del paisaje, destacando los planteamientos del método británico de Landscape Character Assessment y algunos resultados empíricos de esta metodología. La tercera parte trata de las políticas de paisaje, incidiendo en las potencialidades de los instrumentos de planificación territorial y urbanística para incorporar objetivos, directrices y acciones dirigidos a la salvaguarda, gestión, recualificación y acceso público al paisaje. Para terminar, el texto recoge una experiencia de proyecto territorial de paisaje, la del Plan Insular de Menorca (Islas Baleares, España, aprobado en 2003. Se sintetizan sus determinaciones sobre la protección de determinados terrenos por sus altos valores paisajísticos, sus directrices para que las políticas sectoriales (turismo, agricultura, infraestructuras, etc. incorporen criterios paisajísticos, y sus iniciativas para la gestión y mejora del paisaje y para el fomento del acceso público a su contemplación y disfrute.

  12. Consideraciones y criterios para la seleccion de procesos para la mejora: procesos Diana

    National Research Council Canada - National Science Library

    Medina-Leon, Alberto; Nogueira-Rivera, Dianelys; Hernandez-Narino, Arialys; Diaz-Navarro, Yeni

    2012-01-01

    .... La presente investigacion hace enfasis en los criterios mas comunmente utilizados en la valoracion para la seleccion del orden en que se realizara la mejora, lo que resulto en la recomendacion de los criterios...

  13. Consideraciones y criterios para la seleccion de procesos para la mejora: procesos Diana

    National Research Council Canada - National Science Library

    Medina-Leon, Alberto; Nogueira-Rivera, Dianelys; Hernandez-Narino, Arialys; Diaz-Navarro, Yeni

    2012-01-01

    Para implementar un procedimiento de Gestion y Mejora de Procesos, la literatura muestra una amplia revision de procedimientos o metodologias, todas coincidentes con la necesidad de seleccionar los procesos a mejorar...

  14. Caracterizacion metalografica de barras para sobredentaduras, elaboradas por sobrecolado de pilares para implantes dentales

    National Research Council Canada - National Science Library

    Castro, Irvin J; Valencia, Carlos H; Echeverri, Diana; Garzon, Herney; Molina, Anthony; Olave, Gilberto; Parra, Maritza

    2013-01-01

    Introduccion: la dificultad en el manejo de protesis totales convencionales en pacientes totalmente edentulos puede ser mejorada con el uso de sistemas de anclaje sobre implantes dentales para sobredentaduras...

  15. Evaluation of the potential application of 2-acetylpyridine N4- phenyl thiosemicarbazones derivatives for cancer therapy and diagnosis; Avaliacao da potencial aplicacao de derivados de 2-acetilpiridina N-4 fenil tiossemicarbazonas em terapia e diagnostico oncologico

    Energy Technology Data Exchange (ETDEWEB)

    Soares, Marcella Araugio

    2013-08-01

    Despite the wide range of antineoplastic agents available, resistance of some types of cancer and toxicity to normal cells have been identified as the main causes of treatment failure and death. The lack of early and precise diagnosis is also responsible for reducing survival of cancer patients. In this context, the development of substances with low toxicity and therapeutic potential and/or diagnosis purpose, is the major tool in an attempt to increase the survival of patients and assure the safety and efficacy of treatment. Thiosemicarbazones (TSC) are a class of synthetic compounds that have several biological activities, including antitumor. Although several studies have shown the great potential of TSC as therapeutic and / or diagnostic agents, different chemical modifications performed on this class of molecules indicate new possibilities for applications and still require further studies. The objective of this study was to evaluate the potential applicability of 2-acetylpyridine N-4-phenyl thiosemicarbazones derivatives for cancer therapy and diagnosis. The results showed that all 13 TSC tested were cytotoxic to breast and glioblastoma tumor cell lines, presenting higher in vitro antitumor activity than etoposide, an antineoplastic and inhibitor of topoisomerase II frequently used for cancer therapy. The TSC that have halogen or nitro on ortho position showed higher antitumor activity in vitro than their isomers with halogen or nitro on meta or para position of the phenyl group. H2Ac4oFPh and H2Ac4oClPh compounds showed the highest antitumor activity among all tested compounds, with IC{sub 50} in nanomolar order. These TSC induced cell death by apoptosis and oxidative stress was responsible, at least in part, for this type of cell death. The 5 mg.kg{sup -1} H2Ac4oFPh dose, administered s.c., for 4 consecutive days, did not induce important toxicity; however, the same treatment protocol was not effective for tumor growth reduction in an animal model of brain

  16. Significados da gravidez e da maternidade: discursos de primíparas e multíparas

    OpenAIRE

    Silva, Flavia Baroni; Souza, Laura Vilela e; Scorsolini-Comin, Fabio

    2013-01-01

    Resumo: O objetivo foi compreender os sentidos sobre maternidade e as vivências da gravidez em gestantes primíparas e multíparas. Foram entrevistadas seis gestantes, sendo três primíparas e três multíparas. Nas falas, foram trazidos temas como dificuldades físicas, alterações corporais, repercussão da gravidez no relacionamento conjugal, planejamento da gravidez e envolvimento paterno. Observou-se, nas primíparas, que a inexperiência trouxe insegurança, ao passo que, em algumas multíparas, ho...

  17. FINANCIAMIENTO ESTATAL PARA LOS PROCESOS ELECTORALES MUNICIPALES

    Directory of Open Access Journals (Sweden)

    Alejandro Robles Leal

    2012-01-01

    Full Text Available A partir de un breve repaso de las últimas reformas jurídicas al régimen electoral, tanto del Código Municipal como del Código Electoral, el artículo describe el nuevo sistema de financiamiento estatal que se ha dispuesto para apoyar económicamente a los partidos políticos que participan en los procesos electorales municipales y que, antes de la entrada en vigencia del nuevo Código Electoral, no existía. Haciendo énfasis en las características legales de ese nuevo sistema de financiamiento, a partir de las diferencias con el sistema de financiamiento estatal para los partidos políticos que participan en los procesos electorales nacionales, refiere la jurisprudencia del TSE en la materia, destacando que la primera resolución del Tribunal, que ordenó girar recursos del Estado, fue precisamente para un partido político inscrito en el nivel cantonal. Finalmente, partiendo de la tesis de que la ausencia de financiamiento estatal para los procesos electorales municipales constituyó una barrera para la profundización democrática costarricense, por lo que su inclusión representa un avance en el fortalecimiento de los derechos políticos de la ciudadanía, los autores concluyen con algunas recomendaciones de carácter legislativo, con el fin de fortalecer este régimen de financiamiento, principalmente por la vía de su sistematización y equiparación con el financiamiento para procesos electorales nacionales, con la expectativa de robustecer las plataformas partidarias y profundizar, así, nuestra cultura democrática en el nivel local. Se anexa cuadro con la lista de los partidos políticos a los que ya se ordenó girar el financiamiento indicado, que desglosa los montos totales y porcentuales, así como los montos que no pudieron ser liquidados y que regresan al erario.

  18. Preformas para compósitos estruturais

    Directory of Open Access Journals (Sweden)

    Pardini Luiz Claudio

    2000-01-01

    Full Text Available Os compósitos estruturais com reforço uni ou bi-direcional, ao contrário dos materiais homogêneos e isotrópicos, apresentam tanto baixa resistência ao cisalhamento interlaminar (< 60 MPa quanto baixa tenacidade à fratura interlaminar. Como decorrência disso estes compósitos são susceptíveis de falha sob baixo carregamento mecânico, e por esse motivo a utilização destes materiais está confinada a componentes estruturais de responsabilidade secundária. A utilização de matrizes com maior tenacidade à fratura em compósitos produz resultados insatisfatórios para aplicações estruturais, pois o ganho na resistência à fratura interlaminar é insuficiente. A utilização de reforços multi-direcionais (preformas têm gerado resultados significativos nesse particular fazendo com que as pesquisas sejam direcionadas para essa tecnologia. O presente trabalho descreve os métodos que estão sendo utilizados para obtenção de preformas multi-direcionais, tanto para aplicação em compósitos poliméricos quanto para compósitos termo-estruturais. A adição de uma fração volumétrica de fibras equivalente a ~1 - 2% na direção normal ao plano do compósito é suficiente para conferir tanto resistência ao cisalhamento quanto tenacidade à fratura interlaminar, sem prejudicar as propriedades originais em outras direções. A utilização de preformas multi-direcionais permite também maior isotropia de propriedades, maior tenacidade à fratura e resistência às tensões térmicas durante o processamento e em serviço.

  19. Modelo estocástico multivariado para valuar opciones financieras

    OpenAIRE

    Fuentes de Maria C., Marco A.

    1998-01-01

    La presente tesis expone un modelo multivariado estocástico para el proceso de precios de activos financieros, en particular, acciones, con el propósito de utilizarlo para la valuación de opciones.

  20. Analisis y diseno de un monopolo impreso para UWB

    National Research Council Canada - National Science Library

    Blanco Barreto, Ariel; Justo Morales, Juan; Lavandera Hernandez, Ismary

    2014-01-01

    En el presente trabajo se expone un metodo para obtener una antena tipo monopolo rectangular impreso disenado para Ultra Wideband que cumple con los requerimientos preestablecidos luego de su optimizacion...

  1. Aplicaciones de Kinect para neurohabilitación

    OpenAIRE

    De la Fuente Garrido, David

    2012-01-01

    Kinect para Xbox 360, o simplemente Kinect es un dispositivo controlador para videojuegos desarrollado por Microsoft para la videoconsola Xbox 360, y desde junio del 2011 para PC con sistema operativo Windows 7 o Windows 8. Kinect permite a los usuarios controlar e interactuar con la consola sin necesidad de tener contacto físico con un controlador de videojuegos tradicional, mediante una interfaz natural de usuario que reconoce gestos, comandos de voz, y objetos e imágenes. La neurohabili...

  2. para la república Argentina

    Directory of Open Access Journals (Sweden)

    Adriana I. Hladki

    2007-01-01

    Full Text Available Se describen doce especies del género Xylaria que se citan por primera vez para la Argentina: Xylaria adscendens, X. allantoidea, X. coccophora, X. cubensis, X. fissilis, X. gracillima, X. luxurians, X. melanura, X. multiplex, X. myosurus, X. kretschmarioidea y X. pseudoapiculata. El registro de las últimas dos especies es el segundo a nivel mundial. Se describen por primera vez los estromas anamórficos o estériles obtenidos en cultivo de X. kretschmarioidea, X. luxurians y X. melanura, y los cultivos en agar-avena de X. pseudoapiculata. Se sinominiza X. torulosa con X. coccophora, y se citan nuevos sustratos u hospedantes para la mayoría de las especies.

  3. Novos tempos para nossa jovem Tempus

    Directory of Open Access Journals (Sweden)

    Ana Valéria Machado MENDONÇA

    2014-12-01

    Full Text Available A Revista Tempus Actas em Saúde Coletiva chega ao final de 2014 com muitos motivos para comemorar, muitas foram as vitórias, entre elas, o lançamento dos seus dois últimos números do ano. Ao lançarmos os Números 3 e 4, o primeiro nesta semana e o segundo na próxima, trazemos uma nova formatação visual, normativa e editorial, segundo as exigências da base de dados LILACS - Literatura Latino-Americana e do Caribe em Ciências da Saúde, um dos mais expressivosindexadoresda América Latina e Caribe.Isso mesmo, fomos avaliados positivamente e estamos a um passo de mais uma importante indexação para nosso periódico científico.

  4. ¡CAPACITAR! ¿PARA QUÉ?

    Directory of Open Access Journals (Sweden)

    Domingo Tapia Avilés

    2013-12-01

    Full Text Available Según el Diccionario de la Real Academia Española capacitar es “Hacer a alguien apto, habilitarlo para algo”, por tanto, lo que persigue el proyecto Influencia de la capacitación especializada en el rendimiento de los empleados de la Universidad Laica Vicente Rocafuerte de  Guayaquil, es brindar a los miembros del personal que labora en ella, y en otras instituciones y empresas, las aptitudes y habilidades que lo vuelvan competentes en el desempeño de sus funciones. Con este fin, se busca implementar un Centro piloto de capacitación continua que tendrá como objetivo elaborar un Programa de mejoramiento permanente para la optimización administrativa de la ULVR de Guayaquil. La sociedad del conocimiento y la responsabilidad social de la Universidad, así lo imponen.

  5. Criterios para proyecto de sifones en colectores

    Directory of Open Access Journals (Sweden)

    Galán Soraluce, Francisco

    1987-04-01

    Full Text Available Exposition of the criteria and ways to be developed, for the construction of siphons for large and little flow that can assure the cleanness of the horizontal lengths, carried out in Pamplona zone. These results can be reached fitting a reservoir at the entrance of the sewer to make periodical cleanliness and programming the working of the pipes.

    Se describen a continuación los criterios y el modo de desarrollarlos, utilizados en la Comarca de Pamplona para construir sifones para caudales grandes y pequeños, que tengan asegurada la limpieza de los tramos horizontales. Se consigue este resultado disponiendo un depósito junto a la cámara de entrada que asegura limpiezas periódicas, y programando el funcionamiento de las tuberías.

  6. Analisis de Mercado para Servicios de Radiocomunicaciones

    OpenAIRE

    Acurio, Yadira

    2007-01-01

    En el presente trabajo se realiza el análisis de mercado para servicios de radiocomunicaciones. Para ello el contenido de este se ha dividido en cuatro capítulos que se resumen de la siguiente manera: En el Capítulo 1 ¨ Análisis de Mercados ¨ se estudia los conceptos básicos de un análisis de mercado como son: fases en el proceso de Análisis de Mercados y tipos de análisis. En el Capítulo 2 ¨ Segmentación de Mercados ¨ se analiza las estrategias, criterios y bases de segmentación de mer...

  7. Rius para principiantes, recepción

    Directory of Open Access Journals (Sweden)

    Mario Kaplún

    2015-01-01

    Full Text Available ¿En qué se basa la complicidad entre el medio y sus usuarios? Ni la imposición externa, ni la gratificación de los programas explican por qué las audiencias prestan su consenso legitimando en parte la mediocridad. Para el autor la explicación requiere contextualizar la recepción y analizar los "modos de uso" de los medios. Por ese camino no descubrimos el funcionamiento del principio del placer sino un síntoma más de la trágica desarticulación social. Intenta proponer dos pautas teóricas y metodológicas para el estudio de la recepción masiva. Un abordaje de esa naturaleza implica la exploración de los condicionamientos sociales de la recepción que desarrolla a continuación.

  8. El donante vivo emparentado para trasplante renal

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    Alfredo Gómez Sampera

    1995-06-01

    Full Text Available Se presentan los resultados obtenidos de 57 donantes emparentados a los cuales se les realizó nefrectomía unilateral, del estudio preoperatorio a que fueron sometidos, los principales aspectos de la técnica quirúrgica y los resultados de ésta, así como el seguimiento inmediato y a los 6 y 12 meses. Se consideran las ventajas y desventajas de este proceder. Se revisó la literatura médica con experiencias a largo plazo. Dos de los pacientes presentaron hipertensión arterial y en 3 la concentración de creatinina estaba elevada a los 12 meses de operados, cuyas causas y consecuencias posibles se analizan. Se concluye que este proceder es poco riesgoso para el donante y muy beneficioso para el receptor

  9. Material instruccional como recurso para escuelas unidocentes

    Directory of Open Access Journals (Sweden)

    Irma Encinas Ramírez

    1992-11-01

    Full Text Available En el 11 Seminario sobre "Análisis y Perspectivas de la Educación en el Perú" (1985, organizado por el Centro de Investigaciones y Servicios Educativos (CISE-PUC, en la Comisión Educación Rural se analizaron y discutieron los aspectos más relevantes de la amplia problemática de este sector. En tal sentido los problemas referentes a las escuelas unidocentes dieron margen a que un grupo de estudiantes de nuestra Facultad se interesara en ahondar su estudio para ofrecer las respuestas y alternativas más convenientes. Consideramos que este trabajo es significativo y de actualidad, pues hasta el presente, los profesores de centros unidocentes carecen decapacitación específica, de orientaciones, medios y recursos didácticos para hacer frente a su difícil labor.

  10. Diagnóstico molecular para Leishmaniasis

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    Ysabel Montoya

    1997-01-01

    Full Text Available El potencial diagnóstico de epitopes inmunodominantes seleccionados fue ensayado satisfactoriamente a fin de obtener una prueba serodiagnóstica alternativa para la Leishmaniasis Tegumentaria Americana. Dos proteínas recombinantes prometedoras de L. (v. peruviana referidas como T-26-U2/T26-U4 fueron reconocidas por sueros individuales de pacientes con Leishmaniasis Tegumentaria Americana usando Western Blot. La sensibilidad de la prueba fue de 86% con sueros permanentes con Leishmaniasis peruana.

  11. ALGUNAS CARTAS DE CONTROL BIVARIADAS PARA ATRIBUTOS

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    CAROLINA OSPINA HINCAPIE

    2010-01-01

    Full Text Available Muchos procesos industriales son de naturaleza multivariada dado que la calidad de un producto depende de más de una variable. El control multivariado de procesos captura la relación en las variables asociadas al proceso, si se ignora esta correlación y se utilizan gráficos de control univariados para cada variable por separado se puede concluir erróneamente acerca del estado del proceso. En variables continuas correlacionadas se han realizado muchas investigaciones, sin embargo se encuentran pocos trabajos que traten sobre atributos correlacionados. En este trabajo se comparan tres cartas de control para variables aleatorias binomiales bivariadas, correlacionadas entre sí, las cuales miden atributos. Las cartas son: La carta de Hotelling basada en la aproximación de la distribución binomial multivariada a la distribución normal multivariada. La carta MNP la cual es una extensión de las cartas univariadas, y la carta que es una metodología no paramétrica basada en el índice de profundidad de Mahalanobis. La comparación se hace vía simulación utilizando como medida de comparación, la longitud promedio de racha (ARL. Dentro del trabajo se presenta un ejemplo aplicado de las metodologías para construir cartas de control para variables binomiales bivariadas en una empresa de telecomunicaciones. De los resultados se aprecia, en términos generales, que la carta MNP es la mejor tanto en control como fuera de control.

  12. El modelo Biasca para transformar la empresa

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    Rodolfo Eduardo Biasca

    2004-01-01

    Full Text Available Basado en su experiencia en el campo de la consultoría en América Latina, el autor propone un modelo para evaluar la transformación de las empresas, cuyos componentes básicos son: 1 evaluación del cambio que necesita la empresa competitiva, 2 mejoramiento cuantitativo, 3 mejoramiento incremental, 4 revolución o cambio discontinuo y 5 evolución o cambio continuo.

  13. Receptores para el virus de la rabia

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    Jaime E. Castellanos

    2001-12-01

    Full Text Available El virus de la rabia causa una infección en el sistema nervioso que puede provocar la muerte. La patogenia y el neurotropismo de este virus han sido estudiados extensamente con el objeto de explicar el porque la letalidad de la enfermedad y proponer nuevas alternativas terapéuticas. El proceso de adsorción del virus a la célula bianco se considera un evento que define el neurotropismo del virus. Se piensa que debe existir una molécula en la superficie de las neuronas que une con alta afinidad al virus y da comienzo al proceso infeccioso. Durante los últimos años se han propuesto varias proteínas, carbohidratos y lipidos complejos, como receptores para el virus de rabia y se han hecho nuevas proposiciones de terapia antirreceptor. Además de los gangliósidos y fosfolípidos para los que se ha hallado evidencia sobre su participación en la adsorción del virus de la rabia, hay datos experimentales sobre la participación del receptor nicotinico de acetilcolina. la molécula de adhesión celular neural y el receptor de baja afinidad para neurotrofinas en la infección neurona1 En este articulo se hace una revisión de los datos que sustentan a cada una de las moléculas propuestas, se discuten sus implicaciones para la explicación del neurotropismo del virus de rabia y la exploración de nuevas terapias antivirales.

  14. Controlador empotrado para PBX de ocho abonados

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    René Yañes de la Rivera

    2011-11-01

    Full Text Available Normal 0 21 false false false ES X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Como parte del Proyecto Ramal del MIC “Plataforma de Conmutación de Paquetes”, previsto para el desarrollo de productos y tecnologías de origen cubano en el campo de la telefonía, se ha trabajado en el desarrollo de una central telefónica privada (PBX basada en el diseño digital con lógica programable. En el presente artículo se propone el diseño de un controlador de llamada empotrado para la atención de ocho abonados que constituye uno de los bloques fundamentales de dicha PBX. El controlador, desarrollado en VHDL y empotrado en un FPGA Cyclone II de Altera,  permite a través de dos tarjetas de abonado previamente desarrolladas, generar toda la señalización de abonado y establecer hasta cuatro conversaciones simultáneas.

  15. Observadores Distribuidos Garantistas para Sistemas en Red

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    Ramón A. García

    2017-07-01

    Full Text Available Resumen: En este artículo se propone un observador distribuido garantista para sistemas en red, considerando de forma explícita el problema de los retardos variables en las comunicaciones. Se asume que la información intercambiada entre agentes llega siempre a su destino, si bien las comunicaciones están sujetas a retardos variables, cuyo valor máximo se supone conocido. Cada observador trabaja con información parcial, y necesita comunicarse con observadores vecinos para llevar a cabo una estimación del estado completo del sistema. Para representar a los conjuntos garantistas, cuya función es acotar en tiempo real la región en la que se encuentra el estado del sistema, se ha optado por la utilización de zonotopos. Esto permite integrar de forma sencilla la información recibida por cada agente. Finalmente se presentan resultados de simulación para validar el algoritmo propuesto. Abstract: This paper proposes a guaranteed distributed observer for networked systems, taking into account the problem of the variable delays in communications. We assume that the information exchanged among the agents always arrives to its destination, although the communication are subject to variable delays, whose maximum value is known. Each observer works with partial information, and needs to communicate with neighbouring observers to carry out an estimation of the complete state of the system. The guaranteed sets, whose function is to delimit in real time the region in which the state of the system belong to, are represented by zonotopes. This kind of sets allows a simple integration of the information received by each agent. Finally some results obtained with the proposed algorithm are shown in simulations. Palabras clave: Estimación Distribuida, Observadores de Estado, Sistemas con Retardos, Sistemas en red, Zonotopos, Keywords: Distributed Estimation, State Observers, Delays Systems, Networked systems, Zonotopes

  16. Gasohol : un combustible limpio para Colombia

    OpenAIRE

    Ocampo González, Aquiles

    1998-01-01

    Se describe un estudio sobre las posibilidades reales que tiene Colombia de establecer un programa masivo para utilizar mezclas de etanol y gasolina como combustible automotor, teniendo en cuenta que la materia prima más probable deberá ser la caña de azúcar. Se discuten los efectos ambientales, socioeconómicos y técnicos de dicho programa.

  17. Recogimientos para mujeres en Lima hasta 1650

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    Martínez Alcalde, Lidia

    2001-12-01

    Full Text Available Analysis of the different institutions that were established in Peru during the Modem Age for attendance of women, with references to the qualities and evolution of each one of them.

    Análisis de las diferentes instituciones que se crean en el Perú en la Edad Moderna para la asistencia de mujeres, especificando las características y evolución de cada una de ellas.

  18. Sistema de control para pilas de EDR

    OpenAIRE

    Liñán López, Julio

    2011-01-01

    Projecte fet en col.laboració amb l'empresa Ingeniería ETNIA, S.L., El objetivo principal de este proyecto consiste en el diseño de un sistema de medida y registro de potenciales para la evaluación y el control del estado de las pilas de electrodiálisis con identificación por RFID.

  19. Ecuaciones de diferencias mejoradas; para ecuaciones diferenciales

    OpenAIRE

    Lick, W.

    1985-01-01

    Se presenta en este artículo una resena sobre el uso del método integral para derivar ecuaciones de diferencias a partir de ecuaciones diferenciales. El método se aplica a varios tipos de ecuaciones diferenciales ordinarias correspondientes a problemas de valores de contorno y a problemas de valores iniciales, ilustrándose la utilidad del método con varios ejemplos sencillos. Peer Reviewed

  20. Factores claves para iniciar una empresa

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    Irenarco Rueda Reyna

    2015-04-01

    Full Text Available RESUMEN El artículo presenta en forma esquemática los aspectos relevantes para la conformación de una empresa,  desde la planeación acertada, el mercado, los medios de producción,  personal y financiamiento. Resalta asimismo la importancia de las clasificaciones y características que debe tener el indicador  de negocios.

  1. Unha fermosa historia para eloxiar a diferenza

    OpenAIRE

    Silva, Sara Raquel Reis da

    2012-01-01

    Neste artigo, revisita-se uma narrativa "clássica contemporânea" vocacionada para os leitores mais novos, na qual se ficcionalizam, num registo assente na personificação e na simplicidade lexical, por exemplo, temáticas como a igualdade de género ou a condição feminina. CIEC - Centro de Investigação em Estudos da Criança, UM (UI 317 da FCT)

  2. Novedades en Cyrtopodium (Orchidaceae para la Argentina 2

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    Marcela I. Sánchez

    2012-07-01

    Full Text Available Se describe por primera vez para la flora argentina una especie del género Cyrtopodium, C. paniculatum (Ruiz & Pav. Garay. Se incluyen sinónimos, observaciones ecológicas y una clave para diferenciarla de las entidades afines. Además se aclara la identidad de C. pflanzii, previamente citada para la Argentina.

  3. Guía para citar y referenciar. Estilo IEEE

    OpenAIRE

    Ruiz de Luzuriaga Peña, Manuel

    2016-01-01

    Esta guía ha sido redactada para uso de los alumnos de la Universidad Pública de Navarra en la redacción de sus trabajos académicos, siguiendo las pautas de IEEE Edition Style Guide y, para algunos aspectos no contemplados en esa obra, de la Guía para citar y referenciar APA Style.

  4. Experimentos en Antioquia con Fertilizantes para Papa.

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    Yepes Y. Emilio

    1949-03-01

    Full Text Available Con el fin de determinar la adecuada aplicación de cal. y la economía de la adición de Nitrógeno, Fósforo y Potasio, se realizaron varios experimentos de fertilizantes para papa en dos regiones productoras de Antioquia. Los experimentos se realizaron por el sistema de "Parcelas divididas y del análisis estadístico de los resultados pueden sacarse las siguientes conclusiones: 1. Es notable la deficiencia de Fósforo en ambos suelos, y hubo respuesta significativa a una aplicación de 120 kilos por hectárea. 2. Los suelos responden a una aplicación moderada de Nitrógeno y Potasio, pero puede lograrse una economía importante en las cantidades de estos elementos. 3. Parece que la aplicación de dos toneladas de cal por cuadra es suficiente, y no hay razón para aconsejar cantidades mayores. 4. Los resultados obtenidos demuestran que sí es posible la experimentación con fertilizante para papa, y sería de desear que se ampliara la experimentación en las demás regiones productoras.

  5. ficios del ecoturismo para los destinos

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    Francisco Orgaz Agüera

    2014-01-01

    Full Text Available El turismo se configura como una de las principales ramas económicas a nivel mundial. En este sentido, han ido apareciendo nuevas tipologías turísticas que tienen como finalidad mejorar el desa rrollo socioeconómico de la comunidad local y la conservación de los recursos naturales. Así, el ecoturismo es una de estas tipologías turísticas con tales ca racterísticas. El objetivo de esta investigación es analizar los diferentes impactos positivos o beneficios que genera el desarrollo de la actividad ecotur ística para un destino. La metodología ha consistido en una revisión de la lite ratura científica. Los resultados muestran que existen numerosos beneficios para lo s destinos, pero solo, si la actividad ecoturística se desarrolla de forma adecua da, teniendo en cuenta la importancia de los agentes o stakeholders locales para la correcta planificación del ecoturismo en el destino.

  6. Recomendaciones para la vigilancia de Aedes aegypti

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    Roberto Barrera

    2016-09-01

    Full Text Available La enfermedades causadas por arbovirus transmitidos por Aedes aegypti, como el dengue, el chikungunya y el zika, continúan aumentando en incidencia anual y expansión geográfica. Una limitación clave para el control de A. aegypti ha sido la ausencia de herramientas eficaces para vigilar su población y poder determinar las medidas de control que realmente funcionan. La vigilancia de A. aegypti se ha basado principalmente en la obtención de los índices aédicos, los cuales guardan poca relación con el número de hembras del mosquito, que son las responsables de la transmisión de los virus. El reciente desarrollo de técnicas de muestreo de adultos de este vector promete facilitar las labores de vigilancia y control. En esta revisión se presentan las diversas técnicas de vigilancia del mosquito, así como una discusión sobre su utilidad, con recomendaciones para lograr una vigilancia entomológica más efectiva.

  7. VIABILIZADORES PARA A SUPPLY CHAIN MANAGEMENT

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    Annibal José Scavarda

    2004-12-01

    Full Text Available Acadêmicos e industriais refletiram recentemente sobre os paradigmas do desenvolvimento dos sistemas produtivos, revendo as lógicas de produção industrial, comercialização e relacionamento entre empresas. Isso acarretou fortes mudanças na cadeia de suprimentos de diversas indústrias. A gestão da cadeia de suprimentos (Supply Chain Management – SCM tem criado oportunidades e desafios para a competição no mundo dos negócios. O sucesso da implementação dessa nova forma de gestão somente é alcançado através do uso correto de seus diferentes viabilizadores. O objetivo deste artigo é apresentar, descrever e analisar os viabilizadores-chave para a SCM e, com isso, compreender a relevância do seu uso combinado. Os viabilizadores da SCM analisados são os seguintes: nível de relacionamento externo com outros membros pertencentes à mesma cadeia, integração dos processos de negócios entre esses membros, tecnologia de informação e gestão de recursos humanos. Para que estimulem e consolidem iniciativas de SCM, é necessário abordá-los em conjunto e não de forma isolada.

  8. A leitura: um passaporte para a vida

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    Armindo Teixeira Mesquita

    2011-06-01

    Full Text Available Nas sociedades actuais, a capacidade para usar material escrito é indispensável ao acesso a todo tipo de informação, tornando o uso da leitura cada vez mais necessário à participação real do cidadão em actividades produtivas e colectivas, porque ajuda a formar seres pensantes. O contacto com os livros deve ser iniciado o mais cedo possível, não só pelo manuseio, como também pela história contada ou pelos jogos rítmicos. Com efeito, na idade da infância, toda a energia do indivíduo é dirigida para a construção da sua identidade. Logo, as primeiras leituras entram no período da formação e da fundação, isto é, consignamos à leitura uma grande força de desenvolvimento pessoal. Os livros, para além de auxiliares na aprendizagem do mundo, formam o leitor no gosto. Formar o gosto e possibilitar escolhas são realidades fundamentais na vida adulta.

  9. HACER PARA PENSAR: IDEAS, ESPACIOS Y HERRAMIENTAS

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    Claudia Urrea Giraldo

    2012-01-01

    Full Text Available Con el presente ensayo se busca compartir la experiencia de aprendizaje diseñada y desarrollada por un grupo interdisciplinario de profesores y profesoras de la Universidad de Costa Rica. La actividad contó con la participación de docentes de distintas disciplinas académicas. La propuesta se concretó en un taller que utilizó el lenguaje de programación Scratch y las tarjetas Pico, como oportunidad para modelar un ambiente de aprendizaje construccionista. Ideas poderosas, espacios y herramientas se pusieron a disposición de los y las participantes para la construcción de historias digitales, modelos y simulaciones. El objetivo final fue que los y las profesoras pudieran vivenciar, a través de una experiencia práctica, el ambiente de aprendizaje construccionista, las ideas y las herramientas, para que más adelante las pudieran extrapolar en sus propias disciplinas y cursos.

  10. Los consorcios exportadores: Estrategia para vender extralocalmente

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    Margot Cajigas Romero

    2006-01-01

    Full Text Available Bajo el título Los consorcios exportadores: Estrategia para vender extralocalmente,se expone cómo a través de una investigación exploratoria, realizada mediante la interacción de empresarios en una mesa de trabajo, cumplida con reuniones periódicas por más de un año, se consigue diseñar un sistema de unión entre empresas locales, para que vendan sus productos en mercados seleccionados de Colombia y algunas otrasnaciones. El comercio internacional no es unjuego de suma cero, es dable encontrar mercados externos dónde venderlos productos de economías en desarrollo, el primer mercado donde se debe competir es el propio mercado nacional y los empresarios aceptan organizarse para buscar vender en mercados seleccionados de Colombia y el mundo mediante la estrategia Coexco(Comercializadoras Extralocales de Colombia es el mensaje último del artículo.

  11. EXPERIENCIA INTEGRADORA PARA EDUCACIÓN AMBIENTAL

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    Jorge F. Coronel

    2015-01-01

    Full Text Available En este trabajo se relacionó la práctica experimental de laboratorio co n el análisis de problemas ambientales. El objetivo de este trabajo es analizar una propuesta que vinculó el trabajo experimental con la situación del ambiente local para promover el cuidado de la naturaleza y su uso con sostenibilidad . Esta estrategia brindó un enfoque integrador aportando a los alumnos de profesorado una alternativa de aprendizaje con exper iencias sencillas para el estudio cualitativo de l ambiente local y motivar a l análisis de problemas asociad o s. Las experiencias permitieron caracterizar las muestras de suelo, agua y aire del lugar de residencia de los alumnos. La información experimental obtenida potenció la discusión de la situación ambiental actual. E l enfoque de enseñanza basado en problemas socio - científicos posibilit ó la visión interdisciplinar del tema , redimensionando valores y acciones para el cuidado ambiental y el desarrollo sustentable.

  12. Rehacer los caminos para otros mundos posibles

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    Jaime Alberto Rendón Acevedo

    2016-05-01

    Full Text Available Se ha generado un ambiente de fracaso de las propuestas y acciones que desde la izquierda o desde sectores progresistas se hicieron en América Latina y más precisamente en Sur América. Un embate político sobre las alternativas al modelo neoliberal que se lograron instaurar en América Latina en los últimos 15 años. Este artículo contribuye a un debate que apenas comienza; una discusión en torno a los futuros posibles y al papel de los sectores progresistas y de izquierda en un continente que cada día cobra mayor importancia para los intereses de la geopolítica y la geoeconomía mundial. Para esto se empieza por analizar la coyuntura, obviamente con una perspectiva histórica, de tal manera que se posibilite entender el giro a la derecha o si se prefiere el retorno al modelo neoliberal. Luego el análisis tomará perspectivas de futuro, en donde los riesgos necesariamente aumentan para la Región por ser más visible y de mayor peso ante las presiones internacionales que ya ven en Sur América un actor importante. Por último, se presentan algunas reflexiones frente a los procesos económicos y políticos de cara al Buen Vivir en la América Latina.

  13. Cuestionarios Interactivos para Autoevaluación

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    Sánchez García, Juan Francisco

    2007-01-01

    Full Text Available La autoevaluación es un instrumento valioso para que el propio alumno pueda medir el grado de conocimientos adquiridos de la materia en cuestión, al tiempo sirve para adiestrarlo en el tipo de prueba que se utilizará posteriormente en el examen. Por otro lado, dado que en la adaptación al Espacio Europeo de Educación Superior (E3S tiene particular importancia la labor realizada por el propio alumno, los pruebas de autoevalución adquieren, si cabe, una mayor relevancia. Por todo ello, hemos elaborado unos test interactivos con hoja de calculo, para cubrir el doble propósito de evaluar los conocimientos alcanzados por nuestros alumnos, relativos tanto a la materia, como al manejo en sí de la propia herramienta informática de la hoja de cálculo. Se muestran ejemplos concretos relacionados con las matemáticas y la hoja de cálculo Excel.

  14. DAI SEBAGAI ULAMA PEWARIS PARA NABI

    Directory of Open Access Journals (Sweden)

    Hatta Abdul Malik

    2017-01-01

    Full Text Available Allah guides people through the presence of the messengers who served as a witness, to give glad tidings and warnings, the Caller of Allah, to teach the Qur’an and the wisdom and to be good role models for human beings. However, as the messenger was gone, the task of the apostles passed on to the scholars or preachers whose task is to invite people to the path of Allah. Therefore, the scholars and preachers, as the spearhead of the spread of Islam, need to know the tasks of the Prophet and also follow the example of the Prophet in carrying out the mandate Allah assigned to him.   Allah memberikan petunjuk kepada manusia melalui kehadiran para rasul yang bertugas untuk menjadi saksi, memberikan kabar gembira dan peringatan, penyeru agama Allah, mengajarkan al-Qur’an dan hikmah serta menjadi suri tauladan yang baik bagi manusia. Namun, ketika rasul sudah tiada, maka tugas rasul tersebut diwariskan kepada para ulama atau dai yang bertugas untuk mengajak manusia kepada jalan Allah. Oleh karena itu, dai sebagai ujung tombak penyebaran Islam perlu mengetahui tugas-tugas para Nabi dan juga mencontoh Nabi dalam mengemban amanat Allah yang dibebankan kepadanya.

  15. Turbina eolica para agricultura familiar do semiarido com inovac?es tecnologicas para baixas velocidades de vento

    National Research Council Canada - National Science Library

    Daniel Albiero; Sérgio Daher; Leonardo de Almeida Monteiro; Francisco José Firmino Canafístula

    2014-01-01

    ... eólico para pequenas propriedades do Estado do Ceará com inovações tecnológicas. Todos os sistemas foram concebidos e dimensionados em uma turbina inovadora e apropriada para as pequenas propriedades...

  16. Fundamentos e aspectos computacionais para posicionamento computacionais para posicionamento por ponto GPS

    Directory of Open Access Journals (Sweden)

    Bruno César Vani

    2013-11-01

    Full Text Available Este artigo descreve alguns aspectos teóricos e computacionais envolvidos na implementação de um aplicativo para Posicionamento por Ponto Simples (PPS com dados GPS. São utilizadas efemérides transmitidas, Modelo de Klobuchar para atenuação dos efeitos da ionosfera, Modelo de Hopfield para atenuação dos efeitos da troposfera e ajustamento pelo método dos mínimos quadrados. O objetivo é proporcionar ao leitor o embasamento teórico e os aspectos práticos acerca dos procedimentos para obtenção de coordenadas terrestres a partir das observações de pseudodistância advindas dos satélites de navegação GPS. Um exemplo similar consta em Monico (2008. No presente artigo, uma abordagem semelhante é apresentada, mas recorrendo-se aos citados modelos para atenuação dos efeitos da ionosfera e da troposfera. São utilizados dados recentes de uma estação da Rede Brasileira de Monitoramento Contínuo (RBMC para demonstração de um exemplo prático. Vários detalhes acerca dos procedimentos envolvidos são apresentados. Desta forma, o leitor interessado poderá repeti-los, inclusive recorrendo-se a efemérides precisas e demais modelos para a realização de Posicionamento por Ponto Preciso (PPP.

  17. Labbtex: Toolbox para generación de informes en LATEX para Matlab

    Directory of Open Access Journals (Sweden)

    José Luis Almazán Gárate

    2012-10-01

    Full Text Available En este artículo se presenta el software desarrollado por el Equipo H3lite dentro del Departamento de Ingeneniería Civil. Transportes de la Escuela de Ingenieros de Caminos, Canales y Puertos de la Universidad Politécnica de Madrid para la generación de informes enLATEX mediante el software Matlab® y la integración en sus rutinas, Labbtex.La librería Labbtex proporciona un marco flexible para mezclar texto y código Matlab® para la generación automática de documentos. Un rchivo fuente simple contiene el texto de documentación y el código Matlab, al correr la aplicación se genera un documento final LATEX que contiene el texto, gráficos y tablas indicados con el formato de un documento LATEX. El código Matlab genera un documento LATEX usando la sintaxis. Así, LATEX (para composición de texto de alta calidad y Matlab® (para cálculo matemático pueden usarse simultáneamente. Esto permite la generación de informes en tiempo real con un uso de recursos mínimo.

  18. Docencia para el logro y educación para emprender

    Directory of Open Access Journals (Sweden)

    Luis Gerardo Rodríguez Gómez

    1994-05-01

    Full Text Available RESUMEN En el primer artículo, el autor plasmó los elementos relevantes para una propuesta de educación para emprender. En este describe el desarrollo docente como expresión de una intensión, saber y un quehacer, encaminados a la formación del hombre emprendedor. El artículo se divide en tres partes. En la primera, se reseña los factores que orientan la intensión docente para emprender, a partir de un discurso y formas metodológicas establecidas con esa intención. En segundo lugar, se asume el espacio y tiempo la clase como unidad de análisis, para lograr objetivos de tipo institucional, programático y temático y en la parte final, se examina la evaluación docente y se hacen consideraciones generales para una propuesta de evaluación,  que surge al investigar la actuación del maestro.

  19. Competencia para desarrollar la alfabetización digital

    OpenAIRE

    González Rodríguez, José Santiago; Navarrete Aguirre, Mariana; Molina Zacate, Ma. Gabriela

    2011-01-01

    Introducción, Objetivos Generales, Temario: (1) ¿Qué significa la competencia para desarrollar la alfabetización digital? (2) ¿Por qué es relevante que adquiera la competencia para desarrollar la alfabetización digital en mi formación? (3) ¿Cómo aprendo la competencia para desarrollar la alfabetización digital? (4) ¿Cómo aplico la competencia para desarrollar la alfabetización digital? (5) ¿Cómo puedo autoevaluar mi competencia para desarrollar la alfabetización digital (...

  20. Efectos terapéuticos del yoga en la fibromialgia: revisión sistematica. Therapeutic effects of yoga in fibromyalgia: systematic review

    OpenAIRE

    Nager Obon, Vanesa; Oviedo Caro, Miguel Ángel; Bueno Antequera, Javier; Munguía Izquierdo, Diego

    2014-01-01

    Introducción: la fibromialgia es una enfermedad crónica caracterizada por dolor, sueño no reparador y fatiga, entre otros, afectando negativamente en la función física y emocional, reduciéndose la calidad de vida. Objetivo: analizar la evidencia científica sobre la efectividaddel Yoga en el abordaje de pacientes con fibromialgia. Metodología: se realizó una revisión sistemática de la literatura científica sobre la utilización del yoga como terapia alternativa en pacientes con fibromialgia. Re...

  1. Tecnicas, etiquetas y dispositivos de mareaje de protesis dentales empleados en odontologia forense como medio de identificacion. Revision sistematica de la literatura.(ODONTOLOGIA LEGAL Y FORENSE)

    National Research Council Canada - National Science Library

    Vallejo, Diego; Moreno Gomez, Freddy; Medina, Sebastian

    2014-01-01

    Antecedentes: producto de las multiples formas y manifestaciones del ejercicio de la violencia, la identificacion odontologica forense se puede dificultar por el estado del cuerpo o los restos humanos, tras...

  2. Factores determinantes en la gestion de recursos humanos en empresas de servicios que incorporan de manera sistematica nuevas tecnologias: un estudio de caso en la comunidad valenciana

    National Research Council Canada - National Science Library

    Dominguez Santiago, Mildred

    2008-01-01

    La incorporacion de nuevas tecnologias presupone la reduccion de los ciclos de vida de tecnologias ya existentes, y trae consigo transformaciones en los estilos de vida de las personas, las practicas...

  3. Surface electromyography of the masseter muscle during chewing: a systematic review/Eletromiografia de superficie do musculo masseter durante a mastigacao: uma revisao sistematica

    National Research Council Canada - National Science Library

    Nascimento, Gerlane Karla Bezerra Oliveira; da Cunha, Daniele Andrade; de Lima, Leilane Maria; de Moraes, Klyvia Juliana Rocha; Pernambuco, Leandro de Araujo; Regis, Renata Milena Freire Lima; da Silva, Hilton Justino

    2012-01-01

    .... In order to systematically review the literature, on the methods and foods used in EMGS masseter muscle during mastication, we carried out a search in the databases SciELO, Brazil, Lilacs and Medline...

  4. Procedimiento para el cierre de canteras de materiales para construcción en Cuba

    Directory of Open Access Journals (Sweden)

    Julio Montero-Matos

    2016-03-01

    Full Text Available Con el propósito de facilitar a los concesionarios de canteras de materiales para la construcción una herramienta metodológica para efectuar el cierre de estas y garantizar una minería sostenible se propuso un procedimiento en seis etapas a partir del diagnóstico realizado en 22 canteras, ubicadas en tres regiones mineras cubanas. El procedimiento busca disminuir los impactos ambientales provocados por la explotación de las canteras y ofrecer a la industria un estándar para lograr uniformidad en la planificación y ejecución del cierre con un costo mínimo.

  5. Construir-se para educar. Caminhos para a edocomunicação

    Directory of Open Access Journals (Sweden)

    Daniel Prieto Castillo

    2017-09-01

    Full Text Available Neste ensaio nos deteremos no significado de ‘construir-se’ no sentido comunicacional para educar a partir de minha experiência nos últimos 30 anos em propostas de capacitação docente para colegas universitários. Desde uma recorrente ideia de ‘formar’, recuperamos a memória de Simón Rodríguez para pensar o ‘construir-se’. Neste intento, vamos nos ocupar de dois conceitos desenvolvidos ao longo de meu trabalho das últimas décadas: a mediação pedagógica e o método do texto paralelo.

  6. ELEMENTOS PARA LA CONSTRUCION DE UN PERFIL PARA EL GERENTE SOCIAL EN UN ENTORNO GLOBALIZADO

    Directory of Open Access Journals (Sweden)

    Antonio Bastidas Unigarro

    2009-07-01

    Full Text Available El perfil del gerente social adecuado para enfrentar los retos del mundo globalizado se ha estructurado a partir de cuatro requerimientos fundamentales: los conocimientos, la experiencia, las habilidades y las actitudes, los cuales se analizan como competencias indispensables para administrar la problemática compleja, llena de incertidumbres y desafíos del nuevo milenio. La propuesta para la construcción de un perfil de este gerente parte de considerar tres tipos de competencias: las funcionales, las comportamentales y los requisitos de estudio y experiencia. Su construcción parte del análisis de la Gerencia Social en el estado neoliberal, escenario, que reclama la formación de gerentes sociales comprometidos en la construcción de una sociedad mas justa, incluyente, participativa, democrática y solidaria.

  7. La estrategia educativa 2020 o las limitaciones del Banco Mundial para promover el "aprendizaje para todos"

    Directory of Open Access Journals (Sweden)

    Antoni Verger

    2011-12-01

    Full Text Available LA NUEVA Estrategia Educativa 2020 del Banco Mundial establece las prioridades de reforma educativa en países en vías de desarrollo para la década siguiente. El título explícito de la estrategia, Aprendizaje para Todos, es un claro reconocimiento de que, más allá de políticas centradas en el acceso, se debe hacer algo más para asegurar que la educación derive en experiencias positivas de aprendizaje. Sin embargo, como este artículo sostiene, las opciones de políticas explícitas y latentes en la Estrategia 2020 no son las más adecuadas para lograr el Aprendizaje para Todos. El artículo desarrolla tres tipos de argumentos al respecto. El primero se refiere al fuerte apego del Banco a un conocimiento disciplinario y un enfoque metodológico que es insuficiente para entender lo que aprenden los niños en la escuela y por qué. El segundo argumento se refiere al sesgo pro-mercado de la Estrategia por lo que respecta a la reforma del sector público y a nuevas formas de oferta educativa. En tercer lugar, el artículo señala las principales ausencias de la Estrategia, con especial atención a las omisiones relacionadas con la compleja relación entre educación y pobreza.

  8. FACEBOOK+: otra interfaz para el acceso a facebook para personas con capacidades diferentes

    OpenAIRE

    Pacífico, Sofía; Briceño, Andrea; Arlettaz, Gustavo; Martínez, Alejandro; Tormo, Fernando; Franco, Noelia; Sartorio, Alejandro R.; Vaquero, Marcelo; Tedini, Daniel

    2014-01-01

    En este trabajo se presenta los avances del proyecto FACEBOOK+, una aplicación especializada en el uso de los servicios de Facebook para personas con capacidades diferentes. Se presenta un análisis sobre el impacto de este tipo de servicios a nivel social. Partiendo de la caracterización de los requerimientos se propone un diseño de interfaz para implementar. Luego se describen los aspectos tecnológicos y metodológicos utilizados, con referencias a la arquitectura, diseño y recursos de implem...

  9. Lineamientos para una propuesta de plan de manejo para la Bahía de Talara

    OpenAIRE

    A. Vallejo; Guerrero, R

    2016-01-01

    El trabajo forma parte de las memorias del III Encuentro de Investigadores Ambientales, desarrollado del 13 al 15 de agosto del 2014 en la ciudad de Piura - Perú. En el estudio se definen los lineamientos para una propuesta de Plan de Manejo Ambiental (PMA) para la bahía de Talara, desarrollado en base a la información recopilada a partir del año 2010, referido al tipo y características de cada una de las actividades productivas que se desarrollan en la bahía, así como de las incidencias d...

  10. Los riesgos de Internet : consejos para su uso seguro. Habilidades necesarias para utilizar Internet

    OpenAIRE

    Marquès Graells, Pere

    2005-01-01

    Internet ofrece infinitas posibilidades, pero también conlleva riesgos para ciertos perfiles de personas. Estos riesgos están relacionados con la información, la comunicación interpersonal, las actividades económicas, el funcionamiento de Internet y las adiciones. Ante estos peligros potenciales, es conveniente adoptar medidas preventivas (decálogo de los derechos de la infancia en Internet, programas de sensibilización para promover el uso seguro y responsable de Internet, etc.) y además, pa...

  11. Sistema de autenticidad para aplicaciones de análisis de eventos para seguridad.

    OpenAIRE

    ESCAMILLA PARDO, TONI

    2017-01-01

    [ES] En este proyecto se afronta la creación de un sistema distribuido capaz de garantizar, en aplicaciones empleadas para el análisis de eventos de seguridad, la autenticidad de los datos transmitidos entre el host cliente y servidor con el fin de asegurar la integridad de los mismos en la transmisión entre ambas partes, así como evitar la posible alteración en el destino. Para ello, se utilizará la tecnología blockchain a modo de base de datos en la que se almacenen los hashe...

  12. Procesos para el desarrollo de videos educativos para complementar enseñanza en la ESPOL

    OpenAIRE

    Obando Henk, Jacqueline Lorena; Hernandez Sanchez, Henauld Joshep; Marmol Neira, Pedro

    2009-01-01

    Hoy en día la forma de enseñanza se enfrenta a la enorme tarea de mejorar para satisfacer las demandas y desafíos de un mundo globalizado. Este entorno cada día adquiere más importancia, porque para ser activo en el nuevo espacio social se requieren nuevos conocimientos y destrezas que habrán de ser aprendidos en los procesos educativos. Las nuevas tecnologías de la información y de las comunicaciones están transformando la sociedad, y en particular los procesos educativos. El teléf...

  13. Estructura autoportante para ascensores de personas con movilidad reducida para la empresa Coservicios S.A.

    OpenAIRE

    Ocampo Vélez, Juan Camilo

    2010-01-01

    El presente trabajo ilustra el proceso de diseño de una estructura autoportante que hará las veces de pozo de ascensores hidráulicos principalmente para personas con movilidad reducida, los cuales tendrán una capacidad máxima de 350 kg. y una velocidad entre 0.1 y 0.2 m/s -- Para llegar a la solución final se hace una investigación sobre los diferentes tipos de estructuras existentes en el mercado colombiano y mundial, luego de analizar las diferentes formas y geometrías se presentará una ide...

  14. Metodología para el desarrollo de Hidrolizados Proteicos para Medios de Cultivo en Cuba.

    OpenAIRE

    Raisa Zhurbenko; Claudio Rodríguez Martínez

    2005-01-01

    Se desarrolló una nueva metodología para la obtención, desde escala de laboratorio, hasta la producción industrial en serie, de hidrolizados y extractos de proteínas para su empleo en calidad de bases nutritivas en los medios de cultivo microbiológicos. La metodología incluyó elementos científico-técnicos, de Buenas Prácticas de Laboratorio y de Manufactura y las normas ISO 9000 del 2000, entre otros. Se desarrollaron 12 bases nutritivas por nuevos métodos, que cumplen con los requisitos d...

  15. Buscador de 'Gadgets' ROP para la construcción de 'payloads' para ARM.

    OpenAIRE

    VAÑÓ GARCÍA, FERNANDO

    2015-01-01

    [VAL] A partir de la aparici´on de la t´ecnica de protecci´on NX (Non eXecutable), la inyecci´on de c´odigo como m´etodo de ejecuci´on de payloads se vio seriamente limitada. Como consecuencia, los atacantes desarrollaron nuevas estrategias para explotar las vulnerabilidades de los procesos remotos. Una de las t´ecnicas m´as importantes es ROP (Return Oriented Programming), la cual permite “reorganizar” el c´odigo del propio proceso que est´a en ejecuci´on para ejecutar lo que ...

  16. Capacidad de peso para edad y longitud para edad para predecir desmedro a los tres años de vida

    Directory of Open Access Journals (Sweden)

    RIVERA JUAN

    1998-01-01

    Full Text Available Objetivo. Comparar la capacidad de dos valores de demarcación de peso para la edad y de longitud para la edad (-1 y -2 desviaciones estándar a diferentes edades, en un intervalo que va del nacimiento a los 30 meses, para predecir desmedro a los tres años de edad. Material y métodos. Utilizando datos de un estudio longitudinal en Guatemala, se evaluó la hipótesis de que la capacidad de distintos valores de demarcación de peso para edad y longitud para edad para predecir desmedro a los tres años de vida varía en función de la edad. Resultados. La longitud para edad a -1 desviación estándar (DE del patrón de referencia OMS/NCHS es un indicador pronóstico satisfactorio durante el primer semestre de vida, mientras que el mismo índice a -2 DE es satisfactorio despúes de los nueve meses. En cambio, peso para edad a -1 DE es un buen indicador exclusivamente a los nueve meses, mientras que entre los 15 y los 24 meses, este valor se comporta adecuadamente. Conclusión. La capacidad para predecir desmedro a los tres años de edad de distintos valores de demarcación de peso para edad y longitud para edad varía en función de la edad.

  17. Software educativo para enfermería

    Directory of Open Access Journals (Sweden)

    Mac Gaul de Jorge, Marcia Ivonne

    2009-01-01

    Full Text Available El presente trabajo relata la experiencia de investigación del proyecto investigación del proyecto Nº 1531 del CIUNSa, "Software Educativo para Enfermería del Adulto". El equipo integra a enfermeras, quienes en el año 2003 elaboraron un material que responde a la realidad epidemiológica de nuestro país, marcadamente diferente a textos clásicos provenientes de otras regiones del mundo. Convencidos que las universidades deben dar respuestas a los problemas regionales, se están desarrollando materiales educativos que, aprovechan las ventajas que la Informática brinda (altamente interactivos y que pueden actualizarse permanentemente. Esta investigación está finalizando su etapa diagnóstica, la cual posee dos objetivos específicos para el desarrollo del producto software: uno tendiente a indagar las competencias de los alumnos de Ciencias de la Salud con relación al uso de materiales educativos informatizados; el otro, modelar el sistema informático del cual serán usuarios los alumnos y docentes, para lo cual se están realizando actividades de Ingeniería de Requerimientos que permitan establecer el contexto en el que se utilizará el software desarrollado. Creemos que el estudio diagnóstico culminado sitúa a nuestros alumnos en la misma sintonía de los desarrolladores. Sus expectativas por un recurso efectivamente didáctico coinciden con nuestras directrices de diseño.

  18. La Escucha Efectiva. Recomendaciones para lograrla.

    Directory of Open Access Journals (Sweden)

    Mariano Álvarez Farfán

    2009-10-01

    Full Text Available La comunicación es y seguirá siendo una condición de la existencia humana. Aún avanzando por las sendas del siglo XXI es imposible vivir sin dedicarle atención priorizada a este proceso. Dentro de él un lugar primordial lo ocupa la habilidad de escuchar. Saber escuchar es una de las habilidades más importantes que debe tener un profesional e incluso cualquier persona común de la sociedad. En los últimos años los especialistas han venido dedicando una atención especial a esta habilidad, dándole un tratamiento relativamente independiente dentro de los estudios sobre el proceso de comunicación. En investigaciones realizadas sobre las habilidades que debe tener todo buen comunicador se ha determinado que la más necesaria y difícil de lograr es la de saber escuchar. Realmente pasamos más tiempo escuchando que hablando, pero no son muchos los que se pueden calificar como buenos oyentes. Los estudiosos del tema a nivel mundial coinciden también que desarrollar esta habilidad requiere, de una gran voluntad y disposición hacia el cambio de enfoques, conductas y formas de ver las cosas, porque solo hay una manera de lograrlo y es luchando desde “dentro” del individuo. En el trabajo se ofrecen diferentes opiniones y enfoques que pueden contribuir a desarrollar esta habilidad tan importante, para el trabajo profesional y para las relaciones interpersonales. Se enfatiza en los beneficios que reporta una buena escucha, qué entender por una buena escucha o escucha efectiva y las recomendaciones para lograr esa escucha efectiva.

  19. de pejibaye para palmito en Costa Rica

    Directory of Open Access Journals (Sweden)

    Jimmy Boniche

    2008-01-01

    Full Text Available Con el objetivo de determinar la variación estacional de nutrimentos en las hojas de pejibaye para palmito, se efectúo un experimento en una plantación de 8 años, que estuvo sujeta a un manejo comercial normal, incluyendo la fertilización cada 2 meses y cosechas cada mes. Se encontró que a través del año la concentración de N, P, K, S, Fe, Cu, Zn, Mn y B varió en forma importante, no así la de Ca y Mg. Entre las hojas 3, 4 y 5, la concentración de los nutrimentos no varió mucho, salvo para N, Ca y Mg. En general, la concentración de los nutrimentos estuvo en un rango óptimo, según la literatura, excepto para el K ligeramente bajo y el S que resultó alto. En la concentración de N, P, S, Cu, Zn, Mn y B se encontró un período bajo, durante la época más lluviosa y otro alto, en los meses del año en que la precipitación es menor; así, se recomienda hacer el muestreo foliar en marzo, y utilizar la hoja 3. El clima, la época de mayor crecimiento de los tallos, la deposición de residuos de cosecha, características del suelo como el carácter alofánico, y prácticas de manejo realizadas al cultivo como el raleo, contribuyeron a las variaciones de los elementos en el tiempo.

  20. Actividades para ilustrar el pensamiento lateral

    OpenAIRE

    Torres, German

    2006-01-01

    La actividad matemática tiene por objeto ayudar a mejorar la forma de pensar, de pensar matemáticamente. El pensamiento tradicional permite refinar los modelos y comprobar su validez, pero para conseguir un uso óptimo de la nueva información hemos de crear nuevos modelos, escapando a la influencia monopolizadora de los ya existentes. La función del pensamiento lateral, complementario del pensamiento lógico (vertical), es la reestructuración de esos modelos y la creación de otros nuevos. La pr...

  1. Retroníquia: Reconhecer para Tratar

    OpenAIRE

    Cabete, J.; Lencastre, A

    2013-01-01

    Introdução: Retroníquia é o termo proposto por alguns autores para definir o processo caracterizado por onicocriptose proximal e consequente inflamação crónica da prega ungueal proximal (PUP), provavelmente de etiologia traumática. Os autores descrevem dois casos desta entidade clínica recentemente descrita. Casos clínicos: Caso 1: Jovem de 18 anos é observada por sinais inflamatórios do hálux esquerdo com 5 meses de evolução, em relação com trauma pelo calçado. ...

  2. Para no olvidar el comentario de texto.

    Directory of Open Access Journals (Sweden)

    Rúben López.

    2004-03-01

    Full Text Available ¿Qué es comentar?El Diccionario de la Real Academia Española enuncia que la noción de “comentario” tiene tres sentidos: 1 Escrito que sirve de explicación de una obra, para que se entienda más fácilmente. 2 Juicio, parecer, mención o consideración que se hace, oralmente o por escrito, acerca de una persona o cosa. 3 Título que se da a algunas historias escritas en estilo conciso.

  3. Notas para los Colaboradores del Index Botanicorum

    Directory of Open Access Journals (Sweden)

    Verdoorn Frans

    1946-12-01

    Full Text Available EL INDEX BOTANICORUM: -Al discutir la necesidad de un diccionario biográfico de los botánicos del mundo y de todos los tiempos. JAMES BRITTEN (J. Bot. 39: 394. 1901 afirma: “Este formaría un compendio manual y útil no solamente de biografías botánicas sino de investigación botánica y sería de valor incalculable para el historiador y el estudiante” En el siguiente artículo se habla de las pautas que deben seguir los colaboradores del Index Botanicarum al escribir en dicho diccionario.

  4. Entornos adaptados para personas con discapacidad mental

    OpenAIRE

    Guasch Murillo, Daniel; Bonasa Jiménez, Mª del Pilar; López Novella, Judit; Mayor Sánchez, Carolina; Guasch Murillo, Yolanda

    2013-01-01

    Las universidades tienen ante sí un reto importante en conseguir entornos accesibles para el alumnado con discapacidad mental donde puedan desarrollar con éxito sus estudios universitarios y, de esta forma, mejorar sus perspectivas laborales. Sólo el 5,4% de las personas con discapacidad de 25 o más años tienen estudios universitarios o equivalentes, siendo este porcentaje del 18,7% en el caso de las personas sin discapacidad (Observatorio Estatal de la Discapacidad, 2010). Si se observa el p...

  5. Para um perfil do idoso-andarilho

    Directory of Open Access Journals (Sweden)

    Claudia Lysia de Oliveira Araújo

    2012-01-01

    Full Text Available O termo envelhecimento é frequentemente empregado para descrever as mudanças morfofuncionais que ocorrem ao longo da vida humana, após a maturação sexual e que, progressivamente, comprometem a capacidade de resposta dos indivíduos ao estresse ambiental e à manutenção da homeostasia. Na condição de pessoas em envelhecimento avançado e de vida fragilizada, são encontrados muitos idosos-andarilhos por estradas e ruas das cidades brasileiras. Definimos aqui andarilho como a pessoa que vive fora do lar, em um cotidiano muito simples, miserável até, afastado de relações familiares e sociais mais próximas, distanciados do sentido de uma vida dita normal. A falta deste sentido de vida, a que se alia o preconceito da sociedade, têm sido fatores que levam à estigmatização desses idosos abandonados, fazendo-os a acreditar que a rua é o único lugar que lhes resta para viver. O objetivo deste estudo foi conhecer os motivos que conduzem um idoso a se tornar andarilho, tendo sido realizado nos albergues das cidades do Vale do Paraíba, no Estado de São Paulo. O universo desta experiência foram alguns idosos sem moradia, independentemente de gênero. Identificamos, neste estudo, os idosos encontrados não por seus nomes reais, mas por meio da denominação dada a pedras preciosas. Eles relataram ter profissão, embora vivam sós, perambulando pelas ruas das citadas regiões urbanas. Quanto aos problemas de saúde, os idosos aqui entrevistados referiram alguma patologia, ainda que nenhum deles fizesse tratamento ou visitasse médico regularmente, por não disporem de documentos. Os relatos desses idosos-andarilhos apontam para uma condição de sobrevivência fragilizada, comprometida por se tornarem muito vulneráveis, susceptíveis a agressões externas, o que agudiza cada vez mais sua exclusão familiar e social. Por fim, verifica-se que eles ainda sonham em voltar ao lar e recomeçar a vida ao lado da própria família.

  6. Manual de protocolo para empresas hoteleras

    OpenAIRE

    Román-del-Monte, Annabelle Valentina

    2011-01-01

    Este proyecto propone la implementación de un manual de protocolo para empresas hoteleras, especialmente aquellas que reciben clientes pertenecientes al turismo de negocios. Frente a la mayor competencia existente,y en el actual contexto de crisis, las empresas buscan hoy día diferenciarse de las demás a través de la calidad. Una herramienta útil es el “protocolo aplicado a la empresa”. El protocolo anteriormente se entendía como una regla estricta, estrechamente unida al ámbito diplomá...

  7. Robot Saltador y Procedimiento para su Control

    OpenAIRE

    Akinfiev, Teodor; Armada, Manuel; Fernández, Roemi; Montes, Héctor

    2005-01-01

    Robot saltador para el movimiento en terrenos con obstáculos, que contiene al menos un resorte (4) con uno de sus extremos unido al cuerpo (1) del robot, y una cadena cinemática entre el motor (5) y el resorte (4) que comprende un cilindro (7) conectado con el eje del motor (5) y una cuerda (8), con uno de sus extremos conectado al cilindro (7) y con el segundo extremo conectado al pie (3). El procedimiento de control se caracteriza porque en el momento en el que el pie (3) pierde el contacto...

  8. Apontamentos para as aulas de Hidrologia

    OpenAIRE

    Rodrigues, Carlos Miranda; Guimarães, Rita Cabral; Moreira, Madalena

    2011-01-01

    Esta publicação constitui um manual de apoio aos alunos para a disciplina de Hidrologia, Hidrologia Agrícola e Interpretação da Paisagem. Nela são abordados os temas gerais da Hidrologia: Ciclo hidrológico; Bacia Hidrográfica; Precipitação; Intercepção; Evaporação e Evapotranspiração; Água no Solo, Escoamento Superficial; Balanço Hidrológico; Estudo das Cheias.

  9. Directrices para el tratamiento de úlcera venosa

    OpenAIRE

    Guimarães Barbosa, J.A.; Nogueira Campos, L.M.

    2010-01-01

    Se trata de la revisión de publicaciones sobre úlceras de etiología venosa. Considerando la alta incidencia y lo mucho que prevalecen las úlceras venosas, así como las interferencias que las mismas causan en la vida de los pacientes, y la variedad de conductas utilizadas para el tratamiento de las mismas, este estudio se propone actualizar las directrices sobre el tratamiento de las úlceras venosas. Los trabajos analizados demuestran que a pesar de los avances de las investigaciones, todavía ...

  10. FINANCIAMIENTO ESTATAL PARA LOS PROCESOS ELECTORALES MUNICIPALES

    OpenAIRE

    Alejandro Robles Leal

    2012-01-01

    A partir de un breve repaso de las últimas reformas jurídicas al régimen electoral, tanto del Código Municipal como del Código Electoral, el artículo describe el nuevo sistema de financiamiento estatal que se ha dispuesto para apoyar económicamente a los partidos políticos que participan en los procesos electorales municipales y que, antes de la entrada en vigencia del nuevo Código Electoral, no existía. Haciendo énfasis en las características legales de ese nuevo sistema de finan...

  11. 11 Verduras para Diversificar la Dieta Peruana

    OpenAIRE

    Ugas, Roberto; Loayza, Sara; Chang, Agusto

    2013-01-01

    Los peruanos debemos comer más verduras. Estos alimentos son fuentes esenciales de vitaminas, minerales, antioxidantes y fibra alimentaria y la ciencia muestra día a día su contribución a la prevención de enfermedades. Para tener un estilo de vida saludable es necesario comer diariamente cinco porciones de frutas y verduras y hacer ejercicio físico regularmente. Aquí presentamos una lista corta de once hortalizas de hoja, algunas son yuyos de uso tradicional en el campo peruano, otras son ver...

  12. Plan de Inbound Marketing para Yves Rocher

    OpenAIRE

    Tortajada Trullenque, Sandra

    2017-01-01

    Desenvolupament d'una campanya de Inbound Màrqueting per a la marca de cosmètics naturals Yves Rocher basada en dos pilars: màrqueting de continguts y social media marketing. Per a realitzar aquest projecte s'ha analitzat el context actual dels cosmètics naturals, la competència, la marca Yves Rocher i, finalment, s'ha creat un pla de màrqueting digital per aconseguir l'augment de la visibilitat online de la marca. Desarrollo de una campaña de Inbound Marketing para la marca de cosméticos ...

  13. Modelos para estimar custos de software

    OpenAIRE

    Meller, Maristela Corrêa

    2002-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciênicia da Computação. Este trabalho faz uma análise comparativa entre as principais técnicas (Julgamento Especialista, Analogia e Modelos Algorítmicos) e os principais modelos (Linhas de Código, Modelo de Estimativa de Putnam, COCOMO, Pontos de Função, Pontos de Particularidade, Ciência do Software de Halstead e Número Ciclomático de McCabe) usados para estimativa de custo de...

  14. PARA EVITAR LA CONTAMINACIÓN AMBIENTAL

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    F Pachón

    2005-01-01

    Full Text Available El presente artículo se enmarca dentro de la caracterización del sistema de producción bovina del municipio de Utica (Cundinamarca y dentro de los problemas más importantes que lo afectan. Como resultado, el estudio identificó la escasez de alimento de buena calidad en épocas secas como la principal limitante del productor bovino del municipio. Aprovechando una ventaja presente en la zona, como es la elaboración de panela (proceso a través del cual resultan algunos subproductos, como bagazo y melote, que pueden ser utilizados como alternativa alimenticia para los bovinos en cualquier época del año, se planteó un experimento en el que se elaboraron bloques multinutricionales con base en dichos subproductos. El experimento se adelantó en una finca de un productor y se utilizaron 57 novillos cebús con edades entre los 11 y los 24 meses y pesos entre los 124 y los 463 kilogramos. Los animales se dividieron dos grupos que se mantuvieron en pasturas no manejadas. Al grupo experimental se le ofrecieron adicionalmente bloques multinutricionales. Los animales fueron examinados para comprobar su estado fisiológico, con el fin de determinar posibles inconvenientes sanitarios que pudieran afectar el ensayo. Se realizaron pesajes para medir las ganancias de peso en los dos grupos. Los resultados mostraron promedios de ganancias diarias de peso similares a Pr < 5%, donde fueron ligeramente superiores las del grupo alimentado con los bloques multinutricionales (0,848 vs. 0,769 kg animal/día. Los aportes más importantes del experimento fueron, primero, brindar una opción para que el productor pueda alimentar a sus animales en épocas de escasez y evitar que tenga que venderlos a bajos precios. El segundo aporte fue abrir la posibilidad de usar los productos de la elaboración de la panela, que en muchas ocasiones se convierten en desechos que no son usados y que contaminan las fuentes de agua, de una forma económicamente viable.

  15. Razonamiento algebraico elemental: propuestas para el aula

    Directory of Open Access Journals (Sweden)

    Walter F. Castro G

    2014-09-01

    Full Text Available En este artículo se aborda el problema de la enseñanza de álgebra en la escuela primaria. Se discute lo que se entiende como “early álgebra” y se presentan varios enfoques sobre la introducción del álgebra en la escuela elemental. En correspondencia con los enfoques, se discuten tanto algunas tareas de razonamiento algebraico elemental que pueden ser implantadas en el aula, como algunas de las características algebraicas atribuidas. Finalmente, se presenta una propuesta para asignar niveles o grados de algebrización a algunas tareas.

  16. Los ritmos como terapia para la impulsividad

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    Mónica Triviño

    2012-10-01

    Full Text Available Investigaciones recientes muestran que el uso de patrones rítmicos facilita la respuesta óptima en el tiempo, por lo que el entrenamiento mediante ritmos podría proponerse como terapia novedosa ante problemas como la impulsividad. Esto podría beneficiar a pacientes con daño prefrontal o personas con trastorno por déficit de atención e hiperactividad (TDAH, que suelen mostrar conductas impulsivas, así como dificultad para estimar el paso del tiempo.

  17. Fontes para o estudo da arte medieval

    OpenAIRE

    Fraga Sampedro, Mª Dolores

    2013-01-01

    A materia Fontes documentais e literarias para a Historia da Arte, posúe o carácter de obrigatoria e ten que ser cursada no segundo ano (2º curso), en concreto no segundo cuadrimestre. Está integrada no módulo Coñecementos sistemáticos e integrados do feito artístico. Esta materia está estreitamente relacionada con Literatura e Arte no mundo antigo e medieval de primeiro curso, Fundamentos teóricos da historia da Arte de primeiro curso, Métodos de Análise e Interpretación do Fenómen...

  18. Salud: buen negocio para los medios

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    Jennie Vásquez Solís

    2015-01-01

    Full Text Available Hablar o escribir de salud es un buen negocio para los medios. Sin embargo los periodistas solo han puesto énfasis en informar de muertos, enfermos y temas que escandalizan y usando lenguaje de salubristas y no generando interés en los lectores; por eso, la pregunta es: ¿Cómo convertir estas noticias en útiles? simplemente poniéndolas al alcance del público, enseñando como prevenir las enfermedades, promoviendo comportamientos adecuados, en suma partiendo de las enfermedades pero direccionando la información hacia la salud.

  19. ESTRATEGIA INTEGRAL PARA PyMES INNOVADORAS

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    Jairo Sanchez Quintero

    2003-07-01

    Full Text Available La administración y la planeación prospectivas, La planeación estratégica y la logística englobanlas necesidades de direccionamiento estratégico de las empresas a nivel mundial. Estos tres elementos  actúan como un trípode. Es decir, si falta uno de ellos no podrá haber estabilidad. La prospectiva aporta el análisis y construcción de escenarios futuros además del análisis de actores. La planeación estratégica (unida a la prospectiva permite el análisis de las variables internas y externas para formular los propósitos (misión, visión, objetivos y metas, las estrategias, los planes de acción y los indicadores de desempeño y logro, tanto para la empresa en su totalidad como para cada área de la misma en particular. Finalmente, la logística permite agregar valor e integrar los procesos transversales de la empresa, ya que se ocupa del mejoramiento de actividades desde la compra de materias primas o insumos hasta la distribución y el servicio al cliente en actividades de postventa. En este artículo, se presentan los hallazgos centrales de la investigación exploratoria sobre planeación prospectiva, estratégica y logística. Dicho estudio se concentra en una muestra de 29 empresas del sector de alimentos de Bogotá (19 empresas de lácteos y 10 de conservas y aplican una metodología de estudio de caso e Investigación y acción a cuatro empresas. El análisis de esta muestra empresarial y la revisión Bibliográfica realizada sentaron las bases para el diseño de la guía y la herramienta de mejora continua en estrategia, que forma parte de la caja de herramientas, fruto del trabajo del grupo PyMES, EAN durante el último año.

  20. Redes sociales para educomunicadores : recursos y experiencias

    OpenAIRE

    Universitat Autònoma de Barcelona. Máster en Comunicación y Educación (online)

    2013-01-01

    Las redes sociales han sido universalmente acogidas entre los usuarios de internet como una manera comprometerse en eventos, grupos sociales y temas de interés. Estos usuarios han encontrado en las redes un espacio para compartir información, socializar y, en muchos casos, construir verdaderas redes de cooperación y colaboración, un uso que puede ampliarse aún más en la medida en que madure la alfabetización mediática de sus participantes. Este informe muestra las principales redes sociales, ...

  1. Plan de ventas para FDF en Colombia

    OpenAIRE

    Pinedo Molina, Jainer Mauricio

    2014-01-01

    Para muchas compañías el éxito en sus resultados comerciales está dado en gran medida por la elaboración y ejecución de un Plan de Ventas -- Es igualmente importante estar monitoreando la aplicación de las acciones planteadas, el avance en el logro de los objetivos y los ajustes que se deben realizar ante los cambios sucedidos en el entorno y la situación de la empresa; además de atender las nuevas necesidades del mercado -- Entender las variables del entorno, controlables y no controlables, ...

  2. FRONTERAS DE EFICIENCIA PARA OPERADORES DE DECISIONES

    OpenAIRE

    Raffo Lecca, Eduardo; Universidad Nacional Mayor de San Marcos, Facultad de Ingeniería de Sistemas e Informática, Departamento Académico de Ingeniería de Sistemas e Informática. Lima, Perú; Ruiz Lizama, Edgar; Universidad Nacional Mayor de San Marcos

    2014-01-01

    El artículo destaca la metodología del análisis envolvente de datos DEA (Del ingles DATA Envelopment Analysis) como una herramienta del “Benchmarking” para cuantificar o medir la eficiencia de las organizaciones. Se exponen desde conceptos generales, hasta las funciones de frontera de eficiencia mostrando su sustento matemático y también los alcances y bondades del DEA. This work highlights the Data Envelopment Analysis (DEA) Methodology as a benchmarking tool suitable to quantify or measu...

  3. Equipo de pruebas para planta externa (EPPE)

    OpenAIRE

    Utreras Clavijo, Carlos Miro; Sánchez Almeida, Tarquino

    1997-01-01

    Las pruebas eléctricas y de transmisión, que se realizan para el control de calidad en la construcción de planta externa, permiten entregar el servicio telefónico en términos de calidad, las pruebas se realizan en red primaria, secundaria y red de abonados. El equipo realiza las siguientes medidas: Resistencia de bucle; Continuidad de pantalla; Desequilibrio resistivo; Voltaje inducido; y Diafonía. El EPPE, permite la automatización de la realización de las pruebas y presenta algunas ...

  4. Algoritmos exactos para el problema del Antibandwidth

    OpenAIRE

    Jaramillo Cáceres, Cristian

    2010-01-01

    Proyecto Fin de Carrera leído en la Universidad Rey Juan Carlos en el curso académico 2009/2010. Tutores del Proyecto: Abraham Duarte Muñoz y Eduardo García Pardo Los problemas de optimización se caracterizan por la búsqueda de un valor óptimo dentro del espacio de soluciones factibles, es decir, el valor de la mejor solución de entre todas las posibles. Para resolver este tipo de problemas existen programas genéricos (solvers) que, mediante una formulación matemática, son capaces...

  5. Heidegger para a Bioética

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    Julio Cabrera

    2014-01-01

    Full Text Available Dentro del actual panorama de crisis global, se intenta poner en discusión la propuesta del filósofo Martin Heidegger, que puede modificar la formulación de una buena parte de las cuestiones bioéticas. El filósofo presenta una nueva noción de lo humano, no solo como “persona” o “agente racional”. Según el concepto del Dasein, la modernidad fue construida en torno a tres ideas: el sujeto como centro y fundamento, la ciencia como criterio único de verdad en el progreso y su consecuente tecnificación del mundo; habría que liberar un espacio para otro tipo de creación que no excluya la técnica, pero que tampoco la exalte hasta el punto de que lo demás desaparezca. Heidegger puede ser extremadamente instigante en cuanto a la distinción salud-enfermedad y problemas como la medicalización, en el intento de obtener una noción existencial de estos conceptos, superando su visión metafísica tradicional. La salud entonces deja de ser un acontecimiento objetivo para transformarse en un proyecto existencial.

  6. Yúmari / Tutuburi: danzar para no morir

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    Ángel Acuña Delgado

    2010-01-01

    Full Text Available Los rarámuri, habitantes de la sierra Tarahumara, al norte de México, tienen en su diversidad dancística una de sus más genuinas formas de expresión y comunicación, danza orientada tanto hacia el culto divino como hacia las relaciones humanas. Apoyado en los datos obtenidos durante los once meses de trabajo de campo entre 2001 y 2005 en varias comunidades rarámuris de la Alta y Baja Tarahumara, centraremos aquí la atención en el yúmari / tutuburi, ritual festivo a la vez que modalidad de danza desarrollada en su transcurso. Tras las referencias históricas iniciales, se describe a continuación el proceso festivo en general y la danza en particular identificada como yúmari / tutuburi; para situarnos finalmente en torno al sentido, tanto en un plano funcional como estructural. Con todo ello destacaremos la importancia que esta manifestación cultural posee para seguir siendo rarámuri dentro del contexto actual.

  7. La casa del paraíso

    Directory of Open Access Journals (Sweden)

    de Prada Poole, José Miguel

    1992-02-01

    Full Text Available The article is the report that was submitted for the Contest. This is a house in which "the man" is a friend of the nature, he controls it and incorporates it in his most immediate surroundings. People, animals and plants live together forming an interdependent system. The house gives lodging to the man as a group (any kind of group with certain recognized rules of cohabitation. The individual intimacy is protected through "compact building elements" in which the user can retreat and get completely isolated. The glass of the partition le electro-optical and its properties vary as desired. All the necessary installations, controls and networks are situated under the pavement.

    La memoria que se utilizó para el Concurso, al que se presentó esta propuesta, es la que sirve para su exposición. Es ésta, una casa en la que el Hombre es amigo de la naturaleza, la controla, y la incorpora a su entorno más inmediato. Hombres, animales y plantas conviven formando un sistema interdependiente. La vivienda, da cobijo al hombre como grupo (cualquier clase de grupo con ciertas reglas de convivencia reconocidas. Se protege la intimidad individual mediante "elementos compactos de edificación", en los que el usuario puede aislarse por completo. El vidrio del cerramiento es electroóptico y sus propiedades varían a voluntad. Todas las instalaciones, controles y redes necesarios se encuentran bajo el pavimento.

  8. FUNDAMENTOS COGNITIVOS PARA O ENSINO DA LEITURA

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    Lucilene Bender de Sousa

    2010-01-01

    Full Text Available Neste artigo, revisamos alguns fundamentos teóricos para o ensino da leitura baseados em recentes estudos das neurociências e ciências cognitivas. A leitura, enquanto processo cognitivo, deve ser compreendida em todos os seus níveis de processamento para que o ensino possa identificar e atender às necessidades do aluno. Primeiramente, abordamos o processamento da leitura do nível mais básico, a decodificação, ao nível mais avançado, a compreensão. Em seguida, exploramos funções cognitivas que não são exclusivas da leitura, a memória, a emoção e a aprendizagem. Por fim, propomos uma visão integrada desses processos, considerando a intrínseca relação entre língua, cognição e cultura, a qual permeia todas as nossas atividades, destacando o papel da cultura e da educação no desenvolvimento cognitivo.

  9. importancia para la enseñanza

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    Concepción González Rodríguez

    2014-01-01

    Full Text Available En este trabajo se realiza una revisión histórica, de aquellos estudios/experiencias relacionados con los procesos de fotosíntesis y respiración que contribuyeron a la desestimación de la “teoría del humus” como modelo de nutrición vegetal. También se incluyen aquellos problemas que preocupaban a los investigadores en ese marco histórico. Se pondrá especial énfasis en la evolución de la formulación de “la fotosíntesis”, ya que en dicho conocimiento se localizó “la clave” que otorgó a los vegetales una importancia vital para la supervivencia de la vida en nuestro planeta. La evolución del conocimiento en ese campo, permitió pasar de un modelo de nutrición vegetal centrado únicamente en el nivel organismo, a la elaboración y aceptación del modelo actual que contempla la nutrición en tres niveles: organismo, celular y ecosistema. Finalmente se muestra la importancia que esta revisión histórica tiene para la enseñanza de este tema.

  10. para el mejoramiento de sus propiedades

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    Kelly Gallego

    2006-01-01

    Full Text Available El polipropileno (PP presenta baja resistencia al impacto a bajas temperaturas y es muy sensible a la degradación térmica. De otro lado, el polietilentereftalato (PET es un polímero muy higroscópico. Uno de los caminos para superar estos inconvenientes consiste en mezclar ambos polímeros logrando su compatibilidad mediante la inserción de grupos funcionales polares en el PP. En la presente investigación se estudió el efecto de la inserción de anhídrido maleico en el PP reciclado para la obtención de una mezcla con PET reciclado. El grado de inserción se cuanti- ficó mediante el índice de carbonilo utilizando espectrofotometría infrarroja con transformadas de Fourier, FTIR. Las mezclas de PP injertado y no injertado con PET reciclado fueron preparadas por reometría de torque y su compatibilidad se analizó por microscopía electrónica, SEM y calorimetría diferencial de barrido, DSC. Se midieron también algunas propiedades de las mezclas como dureza y absorción de agua. Se concluyó que la mejor compatibilidad se presentó en las mezclas preparadas con PP injertado.

  11. Reflexiones para proyectar viviendas del siglo XXI

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    Josep María Montaner

    2010-07-01

    Full Text Available El artículo plantea formular una revisión de los criterios de diseño de la vivienda colectiva para el siglo XXI reflejado, fundamentalmente, en que hoy en día existe la conciencia de un cambio social. El texto valora una serie de cuestiones clave: ¿responde la vivienda a la diversidad de la sociedad? ¿Contribuye a mejorar la calidad de la ciudad y el territorio? ¿Se hace un uso razonable de las tecnologías disponibles? ¿Responde a unos objetivos de sostenibilidad? Los parámetros para el diseño de la vivienda en la propuesta planteada parten de la definición de unos criterios básicos que se complementan con una serie de diagramas sobre las relaciones idóneas entre ámbitos de la vivienda y espacios del edificio. Se genera un sistema de valoración integral, formado por 14 + 1 variables imprescindibles, que permite proyectar y evaluar proyectos. En conclusión, la calidad de la vivienda se resuelve tanto en la correcta resolución de su interior, como en su contacto con el espacio público del barrio, mediante una diversidad de gradientes que pasen de lo urbano a lo privado.

  12. UMA NOVA PRIMAVERA PARA A IGREJA

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    Marcelo Barros

    2003-01-01

    Full Text Available Nos últimos anos, as Igrejas cristãs vivem um tempo especial de abertura espiritual e humana. Tudo começou por um profundo diálogo com a humanidade. No caso das Igrejas evangélicas e ortodoxas, reunidas no Conselho Mundial de Igrejas, a sua assembléia geral teve como tema “Faço novas todas as coisas” (Ap 21,5. No caso da Igreja Católica, como mandou o Concílio Vaticano II, ela tem procurado renovar “até costumes veneráveis e ancestrais” para adequar-se à humanidade de hoje. Todos, tanto as pessoas favoráveis a este processo, como as que não concordam, percebem a vitalidade espiritual e o empenho com que toda a Igreja, fieís e pastores, confronta sua vida com o Evangelho de Jesus Cristo e se empenha na missão de testemunhar não a si mesma, mas o Reino de Deus. Nos meios de comunicação, entre as pessoas que são para a humanidade referência de autoridade ética e promotores de solidariedade e da paz estão muitos bispos e pastores dos países pobres do mundo.

  13. Un modelo SETAR para el PIB colombiano

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    Vivas Lorena

    2010-08-01

    Full Text Available En este artículo se estudia el comportamiento de la tasa de crecimiento del PIB colombiano entre 1982-2008 a partir de un modelo SETAR (Self-Exciting Threshold Autoregressive, empleando la metodología propuesta por Tsay (1989 y Tong (1990 para la detección de no linealidades relacionadas con la existencia de regímenes cambiantes. Adicionalmente, se comparan los pronósticos generados con los obtenidos en un modelo autorregresivo lineal para diferentes horizontes de predicción, empleando funciones de pérdida simétricas. Los resultados muestran evidencia empírica de que existe no linealidad de umbral en la serie asociada a las altas o bajas tasas de crecimiento registradas por su rezago anual (permaneciendo más tiempo en el régimen de tasas de crecimiento más elevadas y que el desempeño de los pronósticos del modelo SETAR parece no mejorar con respecto al modelo base.

  14. para cemento pórtland I

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    OLGA ISABEL RESTREPO BAENA

    2007-01-01

    Full Text Available En esta investigación se usaron minerales de origen colombiano tal y como son producidos en sus respectivas minas. Se experimentó con la fluorita (Santander, el feldespato (Antioquia y el manganeso (Antioquia en cantidades del 0,0%, 0,2%, 0,5%, 1,0%, 1,5% y 2,0%. Se aplicaron varias técnicas como difracción de rayos X, fluorescencia de rayos x, microscopía electrónica de barrido y microscopía óptica para caracterizar los materiales utilizados y análisis térmico diferencial para determinar la temperatura de clinkerización y se evaluó mineralógicamente el clínker obtenido. Se encontró que el mejor resultado se logró con la adición de 0,5% de la fluorita al permitir la mayor formación de alita y la disminución en el contenido de cal libre. El feldespato y el manganeso (braunita utilizados no tuvieron un comportamiento apropiado.

  15. Una matriz de contabilidad social para Asturias

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    Margarita Argüelles

    2003-01-01

    Full Text Available Una Matriz de Contabilidad Social es un sistema integrado de cuentas que presenta en un cuadro de doble entrada todas las transacciones que tienen lugar en una economía entre sectores productivos, factores de producción, sectores institucionales y resto del mundo. En comparación con una Tabla Input-Output, ofrece una mayor cantidad de información y presenta de forma plena el proceso circular de la renta, captando con mayor precisión los efectos de cambios exógenos. Una de las principales utilidades de una Matriz de Contabilidad Social es servir como base de datos para el desarrollo y aplicación de un modelo de equilibrio general computable. Este es, precisamente, el objetivo último que se persigue con la elaboración de la Matriz de Contabilidad Social de la economía asturiana que aquí se presenta. Esta Matriz ha sido construida con datos procedentes de las Cuentas Regionales de Asturias correspondientes al año 1995 y su estructura se ha adaptado a su futura utilización como base de datos para el modelo que se pretende aplicar en esta economía regional.

  16. O preparo para o trabalho de risco

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    Yone Caldas Silva

    Full Text Available A autora focaliza a importância da preparação psicológica e profissional dos trabalhadores, para enfrentarem os riscos do trabalho, no cenário atual de mudanças nas organizações. Considerando a literatura científica internacional, apresenta dados de sua experiência pessoal. A partir do diagnóstico organizacional, sob a coordenação da Assessoria em Segurança, Saúde e Meio Ambiente, da Refinaria Duque de Caxias, (RJ , da qual era consultora, foi aplicada uma metodologia baseada na autonomia de ação de grupos de empregados, incluindo decisões na aplicação de recursos. Como resultados, são evidenciados a dinamização da estrutura organizacional, mudanças nas condições de trabalho, diminuição significativa nos índices e na gravidade dos acidentes, maior capacitação psicológica e profissional para o trabalho de equipe e o desenvolvimento de aptidão gerencial. Conclui, focalizando o importante papel das instituições vinculadas à segurança, saúde e meio-ambiente, indicando a necessidade de serem implementadas pesquisas de novas metodologias concernentes aos aspectos psicológicos do trabalho.

  17. Biossurfactantes: Uma alternativa para o mercado industrial

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    Ana Paula Pereira dos Santos

    2016-06-01

    Full Text Available Os biossurfactantes são moléculas com características tensoativas, isto é, tem o potencial de baixar a tensão superficial de líquidos, sendo indicados em diversas áreas de aplicação industrial e recuperação de derramamento de óleos em áreas afetadas. Através de atividades metabólicas, as bactérias e fungos sintetizam estes compostos anfipáticos na fase exponencial de crescimento microbiano, liberando moléculas com propriedades especificas de acordo com o tipo de substrato. Assim, busca-se alternativas e processos biotecnológicos que alcancem bons rendimentos e baixo custo na obtenção dos biossurfactantes. Com essa finalidade são utilizados óleos vegetais, óleos residuais de frituras e resíduos agroindustriais que apresentam características peculiares importantes para produção destas moléculas. Atualmente mais de 80% dos produtos de limpeza são fabricados com surfactantes sintéticos derivados do petróleo. O objetivo deste artigo foi destacar os aspectos relacionados na produção dos surfactantes de origem biológica e a importância destes para serem empregados no mercado industrial.

  18. EDUCACIÓN PARA EL CONSUMO

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    J. L. Castillejo

    2011-01-01

    Full Text Available El consumo es un fenómeno de gran peso en la vida actual de los países desarrollados y también de los que están en vías de desarrollo, sinónimo de felicidad y de estatus personal. Por todo ello el consumo merece ser objeto de la educación. En la educación para el consumo resulta clave la implicación familia- escuela, puesto que los padres marcan las primeras pautas en este terreno, junto al contexto social y los medios de comunicación. La educación para el consumo implica información, capacidad de análisis crítica de las situaciones y sensibilidad respecto a las consecuencias del consumo desmedido, que pone en peligro la supervivencia misma del planeta. El consumo se enfrenta así con la escala de valores que la educación debe defender.

  19. Cinco paradigmas para abordar lo real

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    Eva Pasek de Pinto

    2006-01-01

    Full Text Available Considerando la crisis de la investigación social, el propósito del estudio fue configurar un fundamento paradigmático para la investigación en ciencias sociales. Partiendo de dos cuerpos teóricos: Mardones, (1991; y Padrón, (1994, 1998, por medio de la deducción y del análisis se obtuvieron cuatro paradigmas de investigación que, integrados, permitieron obtener un quinto paradigma. Así, como resultado del estudio se presentan cinco paradigmas posibles para abordar la realidad: el empírico- inductivo; el racionalista deductivo; el fenomenológico vivencial, el reflexivo crítico y el holístico o de la complejidad. A lo largo del estudio, cada uno de ellos se analiza en cuatro aspectos paradigmáticos: el Ontológico, el Epistemológico, el Axiológico y el Metodológico.

  20. para la intervención

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    Lina María Parada Muñoz

    2006-01-01

    Full Text Available Los problemas de fertilidad y concepción han sido tratados habitualmente en sus dimensiones biomédicas. Sin embargo, estos problemas reclaman cada día mayor intervención de equipos interdisciplinarios que permitan una atención integral, pues la imposibilidad de concepción no sólo está asociada a limitaciones biofísicas. Este artículo se desarrolla en torno a tres cuestiones: la primera, sobre la infertilidad, su dimensión biomédica y las aproximaciones que ha propuesto la Psicología para comprender las implicaciones de este fenómeno; la segunda, sobre la pareja, resaltando las posturas orientadas a discernir su naturaleza, sus formas de funcionamiento y las condiciones que las mueven al cambio; la tercera, relacionada con la narrativa como posibilidad para comprender e interpretar los fenómenos clínicos, entre ellos, las experiencias de las parejas en procesos de fertilidad asistida.