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Sample records for avaliacao da influencia

  1. Avaliacao de projeto de promocao da saude para adolescentes

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    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 interacoes medicamentosas potenciais em prescricoes da atencao primaria de Vitoria da Conquista (BA), Brasil

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    Danyllo Fabio Lessa Leao; Cristiano Soares de Moura; Danielle Souto de Medeiros

    2014-01-01

    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 Medsc...

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

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    Neuma Chaveiro

    2013-06-01

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

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

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    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.

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

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    Duran Efe

    2014-01-01

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

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

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    Quenia dos Santos

    2013-10-01

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

  7. Influencia da espessura das laminas e da cola na madeira laminada colada

    OpenAIRE

    Bohn, Adolar Ricardo

    1995-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnologico Estuda a influência que a espessura das lâminas tem no desempenho mecânico de vigas de madeira laminada colada, usando como parâmetros o módulo de elasticidade e resistência de ruptura na flexão. Faz um estudo sobre a possibilidade de diluição da cola e determina um percentual de diluição adequado para o Pinus Taeda e Pinus Elliottii.

  8. Evaluation of testosterone serum levels in testicular interstitial fluid under thyroxine influence; Avaliacao da testosterona no fluido intersticial testicular sob influencia da tiroxina

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    Silva, Isvania Maria S. da; Pereira, Simey de L.S.; Souza, Grace Mary L.; Carvalho, Elaine F.M.B.; Catanho, Maria Teresa J. de A. [Pernambuco Univ., Recife, PE (Brazil). Dept. de Biofisica e Radiobiologia; Silveira, Maria de Fatima G. da [Pernambuco Univ., Recife, PE (Brazil). Dept. de Anatomia; Lima Filho, Guilherme L. [Universidade de Pernambuco (UPE), Nazare da Mata, PE (Brazil). Faculdade de Formacao de Professores

    2000-07-01

    The thyroid hormones possibly exert a reciprocal action between testicular steroids and Sertoli's cells during the premature period. This work aims to evaluate thyroxine effect on testosterone serum levels and in the testicular interstitial fluid (TIF) in rats. Wistar males rats, 22 days old, 80g of body weight, were induced to hyperthyroidism with thyroxine (20{mu}g/kg) in periods of 5, 10, 15 and 20 consecutive days. After the treatment the animals were weighed and sacrificed for blood and testis collection. From the blood serum and from the TIF drained from the testis were performed testes in order to obtain testosterone attached to {sup 125} I with a specific activity of 36,86 MBq/ig. The results have shown a testosterone significant lineal increase in both - serum and TIF - in the group treated with thyroxine as a time function. In the control group, testosterone levels remained low in both serum and TIF dosages. As a result, we were able to verify that the testosterone levels could be modified by thyroxine in serum and TIF. And so, it could affect luteinizing hormone (LH) and follicle-stimulating hormone (FSH) levels in hypophysis. (author)

  9. Diagnostico ambiental integrado da area de influencia do descarte do material dragado do estuario de Santos

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    Luis Renato Bastos Lia

    2008-01-01

    Resumo: A Costa da Mata Atlântica é uma região do Estado de São Paulo com uma grande importância econômica, principalmente devido ao porto de Santos, o maior da América Latina e ao complexo industrial de Cubatão. O estuário da região foi impactado ao longo de anos pelas atividades antrópicas das indústrias, porto e da população residente nas vizinhanças do estuário. O objetivo deste trabalho consistiu no desenvolvimento e aplicação de uma metodologia integrada para um diagnóstico ambiental...

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

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    Gianna Mastroianni Kirsztajn

    2014-03-01

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

  11. Analise da influencia das fontes de carbono na patogenicidade do Moniliophthora perniciosa pathogenicity em Theobroma cacao

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    Fatima Cerqueira Alvim

    2009-01-01

    Resumo: O fungo basidiomiceto hemibiotrófico Moniliophthora perniciosa, agente causal da doença vassoura-de-bruxa (VB) em Theobroma cacao, é o principal patógeno da lavoura cacaueira nas Américas e no Caribe. O presente trabalho apresentou como objetivo primordial identificar proteínas relacionadas com a patogenicidade deste fungo. No primeiro capítulo desta tese foi demonstrado o efeito de diferentes fontes de carbono sobre a morfologia e fisiologia do M, perniciosa. O fungo foi crescido em ...

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

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    Andrea Gaspar Marcos

    2014-03-01

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

  13. AIDS related thoracic lymphoma: evaluation by computed tomography; Linfoma toracico na sindrome da imunodeficiencia adquirida: avaliacao por tomografia computadorizada

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    Siciliano, Antonio Alexandre de Oliveira [Hospital Universitario Clementino Fraga Filho, Rio de Janeiro, RJ (Brazil). Servico de Radiodiagnostico; Marchiori, Edson [Universidade Federal, Rio de Janeiro, RJ (Brazil). Curso de Pos-graduacao em Radiologia

    2000-02-01

    The authors reviewed five cases of patients with acquired immunodeficiency syndrome (AIDS) related lymphoma to describe the thoracic findings on computed tomography. The patients were followed at Hospital Universitario Clementino Fraga Filho, Hospital Universitario Antonio Pedro and Hospital da Lagoa, from November, 1989 to March 1998. Epidemiological, clinical and pathological data from these patients were quiet variable and pulmonary nodules and masses, hilar and mediastinal lymphadenopathy, and thoracic wall masses were observed. AIDS related lymphomas involving the chest are pleomorphic and most commonly extranodal. (author)

  14. Evaluation of influence of fertilizers in radium concentration from tomato culture; Avaliacao da influencia dos fertilizantes nos teores de radio encontrados na cultura do tomate

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    Lauria, Dejanira C. [Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, RJ (Brazil). Dept. de Protecao Radiologica Ambiental; Ribeiro, Fernando C.A.; Alleluia, Irene B. [Instituto Nacional de Tecnologia (INT), Rio de Janeiro, RJ (Brazil). Div. de Meio Ambiente; Perez, Daniel V. [Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA), Rio de Janeiro, RJ (Brazil). Lab. de Analises de Solos e Plantas

    2001-07-01

    The fertilizer contribution to radio uptake by tomato plants was assessed. Tomato and soil samples from four different plantations were analyzed: two using organic fertilizer and two using phosphate fertilizer. The Ra concentrations in eight of the most used tomato fertilizers were determined. The concentration values ranged from 14 to 221 Bq/kg of Ra-226 and from 25 to 176 Bq/kg of Ra-228. Owing to the low Ra concentration and to the used fertilizer quantities, the fertilizers would not increase significantly the Ra soil concentration. However, the highest soil to plant concentration ratios were found in the plantations using phosphate fertilizers. This outcome pointed out the higher Ra availability in the phosphate fertilizer plantations than in the organic fertilizer plantations, showing a possible positive influence of phosphate fertilizers for the tomato Ra uptake. Due to the phosphate fertilizer used, the dose could increase from 0,05 Sv/year to 0,24 Sv/year. However this increase is not significant face the ingestion average worldwide effective dose. (author)

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

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    Aquino, Reginaldo Ribeiro de

    2010-07-01

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

  16. Influencia da aplicação de biofertilizantes na qualidade da produção da bananeira nanica (1º ciclo

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    Pedro B. Torres

    2014-04-01

    Full Text Available A agricultura orgânica é baseada em um sistema holístico, compatibilizando a produção de alimentos sem a utilização de insumos químicos na lavoura, aliado ao baixo custo de produção. Objetivou-se estudar os efeitos de tipos e doses de biofertilizantes na qualidade da produção da bananeira nanica (1º ciclo. Utilizou-se 5 tipos de biofertilizante e 10 doses de biofertilizantes (0; 0,3; 0,6; 0,9; 1,2; 1,5; 1,8; 2,1; 2,4 e 2,7 L planta-1 aplicação-1. A pesquisa foi conduzida, em condições de campo, no período de 20 de março de 2010 à maio de 2011, no CCHA da Universidade Estadual daParaíba, Campus Catolé do Rocha-PB. O delineamento experimental adotado foi o de blocos casualizados, com 50 tratamentos, no esquema fatorial 5 x 10, com quatro repetições, totalizando 200 plantas experimentais. Os maiores valores de diâmetro do fruto médio e diâmetro da polpa do fruto médio foram obtidos com a dose máxima de 2,7 L planta-1/aplicação-1 biofertilizante B1; O valor máximo do ºBrix da polpa do fruto médio foi obtido com a dose ótima do biofertilizante B4 (1,52 L planta-1/aplicação-1.

  17. A Influencia dos roedores e aves na regeneraçao da Araucaria angustifolia (Bert.)O. Ktze

    OpenAIRE

    Müller, Jorge Alberto

    2013-01-01

    Este trabalho foi desenvolvido na Reserva Experimental do Setor de Ciências Agrárias, da Universidade Federal do Paraná, em São João do Triunfo a 130 quilômetros de Curitiba durante os anos de 19 81 e 19 82 em uma área de mata nativa, cujas árvores predominantes são araucárias. Os experimentos foram complementados por testes realizados no laboratório e no viveiro florestal do Curso de Engenharia Florestal. Visando incrementar a regeneração da araucária através da proteção de suas sementes- pi...

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

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

    2011-07-01

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

  19. Evaluation of the effects resulting from the application of magnetic fields on the properties of crude oils and paraffins; Avaliacao da influencia da aplicacao de campos magneticos sobre as propriedades de petroleo e parafinas

    Energy Technology Data Exchange (ETDEWEB)

    Vieira, Lenise Couto; Rocha, Nelson de Oliveira; Dittz, Carlos Henrique da Silva [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES). Setor de Tecnologia de Processamento e Transporte

    2000-03-01

    In petroleum industry the phenomenon of build-up of organic deposits, basically of paraffinic nature, into surface equipment, flow lines and columns has been one of the greatest problems concerning the production and transfer of crude oils, leading to significant and increasing losses in production. The approach through the application of magnetic field is a novel technique, neither explained nor exploited altogether, not one that turns out to be a simple preventive solution for the problem requiring low investment and showing expressive benefits, provided its effectiveness is confirmed. The main results of laboratory test where the effects of application of magnetic fields on the properties of two crude oil types, one mixture of paraffins and two reference solution were evaluated are presented herein, and this paper also approaches the influence of process variables (Magnetization temperature, exposure time and magnetic field density) on the efficiency of this process of treatment. (author)

  20. Evaluation gamma radiation in composite sisal fiber- polyurethane derived of castor oil by bending test; Avaliacao da influencia da radiacao gama em compositos de fibra de sisal - poliuretano derivado de oleo de mamona atraves de ensaios de flexao

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    Souza, Felipe H. de; Geraldo, Ricardo R.; Vasco, Marina C.; Azevedo, Elaine, E-mail: helunica@yahoo.com.br [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil); Claro Neto, Salvador [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Instituto de Quimica

    2015-07-01

    Materials used for making furniture and accessories or positioning in X -ray examination rooms should not exhale volatile organic compounds and are resistant to ionizing radiation. One solution is the use of vegetable fiber and polyurethane composites of vegetable origin, since they are biodegradable, derived from renewable raw materials and have no volatile organic compounds. The main difficulty in developing this material is fiber adhesion with the polymer. The objective of this study is to evaluate the mechanical properties of composite sisal fiber composite, without further treatment, and polyurethane derived from castor oil, with a dose of 25 kGy gamma radiation, subjected to 3 points bending tests. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-10-26

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

  3. Influencia da largura do corpo-de-prova na medida da tenacidade do concreto reforçado com fibras de aço

    OpenAIRE

    Ana Maria Oliveira Villares

    2001-01-01

    Resumo: A quantificação da tenacidade dos concretos reforçados com fibras de aço (CRFA) pode ser afetada por diversos fatores, dependendo do método adotado e do procedimento para realizar o ensaio de flexão sob deformação controlada. Esses fatores incluem entre outros: configuração do ensaio, configuração do carregamento, taxa e controle do carregamento, tipo de equipamento para medida do deslocamento vertical, tipo de máquina; temperatura ambiente, tamanho e geometria do corpo-de-prova. A an...

  4. Evaluation of the repeatability of dosimetric parameters of a linear accelerator beam; Avaliacao da repetibilidade de parametros dosimetricos do feixe de um acelerador linear

    Energy Technology Data Exchange (ETDEWEB)

    Morelli, Humberto A.S.; Oliveira, Harley F. de; Silva, Maelson do N.; Pavoni, Juliana F., E-mail: h.morelli@hotmail.com [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Medicina. Servico de Radioterapia

    2016-07-01

    This study aims to evaluate the repeatability of symmetry and flatness of the photon beam of 6 MV linear accelerator Oncor Impression, Siemens, from the Radiotherapy Department of the Hospital das Clinicas da Faculdade de Medicina de Ribeirao Preto - USP. In total they were collected 102 measures, weekly, through two-dimensional detector of ionization chambers, Matrixx Evolution, IBA Dosimetry, connected to a computer with software OmniProI'mrt. The isocenter of the linear accelerator was placed in the center of the sensitive volume of the detector with solid water plates above and below these. Data were collected with 100 UM, with field size 10 x 10 cm². The flatness and symmetry values were calculated by the software used. The first measurement of this work was used as reference, the others were compared with it, taking into account the values of permissible variation for these parameters. The minimum, maximum and average value were analyzed. The literature indicates that the flatness and symmetry values should not vary by more than 2 and 3%, respectively. The results of this work show that the values of these parameters for the linear accelerator study are within the permissible variations in protocols and are therefore able to appropriate clinical use. (author)

  5. Assessment of influence of OSL dosimeters in the skin dose in radiotherapy: study for Monte Carlo simulation; Avaliacao da influencia de dosimetros OSL na dose na pele em radioterapia: estudo por simulacao Monte Carlo

    Energy Technology Data Exchange (ETDEWEB)

    Schuch, Franciely F.; Nicolucci, Patricia, E-mail: franschuch@yahoo.com.br [Universidade de Sao Paulo (USP), Ribeiraoo Preto, SP (Brazil)

    2017-11-01

    The interest in optically stimulated luminescence (OSL) dosimetry materials is growing due to its potential use in quality control in Radiotherapy. The use of these dosimeters for in vivo dosimetry, however, may influence the dose to the skin and deeper tissues in the patient. The goal of this study is to evaluate the influence of the OSL Al{sub 2}O{sub 3} material in dose deposited in the skin and deep in Radiotherapy. Monte Carlo simulation is used to evaluate this purpose when OSL dosimeters of Al{sub 2}O{sub 3} are positioned on the skin surface of the patient. Percentage depth dose curves for clinical beams of 6 and 10 MV were simulated with and without the presence of the dosimeter on the surface of a water phantom. The results showed a decrease of doses in regions close to the surface of the skin. In the build-up region, the maximum decreases of dose produced by the presence of the dosimeters were 52,5% and 47,5% for the 6 and 10 MV beams, respectively. After the build-up region, there are not significant changes in the doses for any of the used beams. The differences of doses found are due to the influence of the dosimetric material on the relative fluence of electrons near the end surface of the dosimeter. Thus, the results showed that the presence of the dosimetric material on the surface interferes on the skin dose. However, these dosimeters do not cause dose variations in depths of clinical interest, allowing its application in routine in vivo dosimetry in Radiotherapy. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2004-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-03-01

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

  8. System precision assessment ExacTrac 6D® BrainLab of the Hospital das Clinicas da Faculdade de Medicina da USP; Avaliacao da precisao do sistema Exactrac 6D® BrainLab do Hospital das Clinicas da Faculdade de Medicina da USP

    Energy Technology Data Exchange (ETDEWEB)

    Maistro, Carlos E.B., E-mail: carloseduardo.bravinmaistro@gmail.com [Programa de Residencia Multiprofissional em Fisica Medica, Faculdade de Medicina de Sao Paulo, SP (Brazil); Nakandakari, Marcos V.N.; Ribeiro, Victor A.B.; Sales, Camila P. de; Rodrigues, Laura N. [Universidade de Sao Paulo (USP), SP (Brazil). Instituto de Radiologia. Servico de Radioterapia. Hospital das Clinicas

    2015-08-15

    The goal of this study was to evaluate the precision of ExacTrac 6D® Brainlab system, installed at Hospital das Clinicas da Faculdade de Medicina da USP, in frameless radiosurgery treatments. Four sets of tests were performed for different purposes in order to assess the following parameters: the accuracy of location through infrared system; evaluation of the reproducibility of fusion algorithm; evaluation of the X-ray system; and the end-to-end test with the goal of assess the overall accuracy of the system. It was found that the infrared system showed a maximum deviation of 0.5 mm in terms of positioning and the X-ray system showed a precision of 0.15 mm and 0.6°. The reproducibility of fusion algorithms provided a maximum deviation in position which was less than 0.5 mm and 0.5° and the quantitative analysis of the results for end-to-end test showed an overall accuracy of the system better than 0.8 mm. (author)

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

    Directory of Open Access Journals (Sweden)

    Diogo Gallo Oliveira

    2013-04-01

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

  10. A influencia da politica de recursos humanos na satisfação docente : o caso da Fundação Universidade Estadual do Oeste do Parana - FUNIOESTE

    OpenAIRE

    Nogueira, Paulo Roberto Chavarria

    1993-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina. Centro Socio-Economico O presente estudo analisou a política de recursos humanos da Fundação Universidade Estadual do Oeste do Paraná - FUNIOESTE e sua relação com a satisfação no trabalho, envolvendo os docentes lotados nos quatros campi da instituição, a saber: FACISA, FACIMAR, FACITOL e FECIVEL. Esta pesquisa objetivou identificar os componentes que integram a política de recursos humanos da FUNIOESTE, apurar o índice de s...

  11. Influência dos Direcionadores do Uso da TI na Governança de TIThe Influence of Use Drivers in it GovernanceInfluencia de los Gestores del Uso de la TI en la Gobernanza de TI

    Directory of Open Access Journals (Sweden)

    SILVA, Brivaldo André Marinho da

    2011-03-01

    Full Text Available RESUMOO presente trabalho propõe-se a analisar como as dimensões que tipificam o ambiente organizacional, aqui entendidas como direcionadores do uso de Tecnologia de Informação (TI, influenciam na estruturação de sua governança. Para tanto, o quadro teórico apoiou-se nas relações das dimensões do uso da TI por meio de direcionadores de mercado, organizacional, do indivíduo e de TI, bem como na visão de sua governança, baseada em estágios dos processos de decisão de TI, mapeando-os nas principais decisões críticas, que envolvem seus princípios, arquitetura, infraestrutura, investimentos e priorização, bem como aplicações de negócio. O estudo propõe um modelo teórico resultante da revisão da literatura específica que, por meio da estratégia de estudo de caso, foi aplicado em entrevistas com os principais tomadores de decisão da estrutura de governança de uma instituição de educação profissional, atuante em nível nacional, somado às informações baseadas em registros internos e observação não participativa. Obteve-se que as características de investimentos em TI influenciam positivamente as principais decisões sobre sua governança, por meio dos direcionadores de uso que envolvem a instituição e que estão presentes nos fatores externos que impactam as principais decisões críticas da área, influenciando-as, exceto às relacionadas aos princípios de TI. Verificou-se também que o contexto interno não influencia diretamente todos os aspectos das decisões sobre a governança. Por fim, percebeu-se que a TI não é vista como elemento capaz de estruturar os arquétipos de governança pelo seu uso, ficando definidos pela hierarquia organizacional da instituição.ABSTRACTThis study aims to examine how the dimensions that typify the organizational environment, here understood as drivers of the use of Information Technology (IT, influence in structuring their governance. So, the theoretical framework has

  12. A influência da iniciativa hospital amigo da criança na amamentação La influencia de la Iniciativa Hospital Amigo del Niño en el amamantamiento The influence of the 'Friend of Children Hospital' campaign on breast-feeding

    Directory of Open Access Journals (Sweden)

    Valéria Lerch Lunardi

    2004-12-01

    Full Text Available O trabalho investiga a percepção de mulheres que foram parturientes num Hospital Amigo da Criança (HAC sobre a influência dessa proposta na sua decisão de aleitar. Realizamos entrevistas semi-estruturadas enfocando o processo de aleitamento materno (AM, expectativas, vivências e importância da equipe de saúde. A análise de conteúdo dos dados realizou-se a partir dos "Dez Passos para o Sucesso do Aleitamento Materno". Constatamos que em situações reconhecidas pelas mulheres como problemáticas e não encontrando respostas que atenuassem diferentes desconfortos e o sofrimento vivenciados, frente ao seu desejo de amamentar, interromperam o AM. Consideramos que com a manutenção do apoio à mulher, pelo HAC, para o enfrentamento dessas dificuldades, sua influência pode ser decisiva para a continuidade do AM.El trabajo investiga la percepción de las mujeres que eran parturientas en un Hospital Amigo del Niño (HAN sobre la influencia de esta propuesta en su decisión de amamantar. Realizamos entrevistas semiestructuradas enfocando el proceso de amamantar (AM; las expectativas; las vivencias; la importancia del equipo de salud, entre otros. El análisis de contenido de los datos se realizó a partir de los «Diez Pasos para el Éxito de Amamantamiento Materno». Constatamos que en situaciones reconocidas por las mujeres como problemáticas y no encontrando respuestas que atenuaran diferentes incomodidades y el sufrimiento vivenciado, frente a su deseo de amamantar, interrumpieron el AM. Consideramos que con el mantenimiento del apoyo a la mujer, por el HAC para el enfrentamiento de esas dificultades, su influencia puede ser decisiva para la continuidad del AM.The paper investigates the awareness of women who gave birth in a 'Friend of Children' Hospital (FCH of the influence of this campaign on their decision to breast-feed. We conducted semi-structured interviews, focusing the maternal breast-feeding process, expectations, experiences

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2002-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Rosilda Maria Gomes de

    2012-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Poliane Angelo de Lucena

    2013-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1994-12-31

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Wendell Lima de

    2003-07-01

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

  18. 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)

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

    Directory of Open Access Journals (Sweden)

    Carla Cristina Viana Santos

    2005-08-01

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

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

    Directory of Open Access Journals (Sweden)

    Alberto Ofenhejm Gotfryd

    2012-01-01

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

  1. 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)

  2. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Jucilene Maria

    2003-08-15

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

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

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    Fátima Maria da Silva Abrão

    2010-06-01

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

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

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    LUIZ FERNANDO MANGEA DA SILVA

    2014-09-01

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

  7. Influencia de la responsabilidad social en la lealtad: aplicación en el mercado de servicios

    OpenAIRE

    García de los Salmones Sánchez, María del Mar; Rodríguez del Bosque Rodríguez, Ignacio Alfredo

    2011-01-01

    El presente trabajo analiza la influencia de la responsabilidad social corporativa en el comportamiento del consumidor mediante su inclusión en los modelos tradicionales de lealtad. Para ello, se parte de una revisión de la literatura sobre el concepto que da pie al planteamiento de varias hipótesis de investigación relativas a la influencia del comportamiento socialmente responsable en la valoración de un servicio y en la imagen corporativa, antecedentes directos, junto con...

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

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    Renata da Silva Hanzelmann

    2010-09-01

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

  9. INFLUENCIA DE LA VEGETACIÓN EN LOS NIVELES DE RUIDO URBANO INFLUÊNCIA DA VEGETAÇÃO NOS NÍVEIS DE RUÍDO URBANO INFLUENCE OF VEGETATION IN URBAN NOISE LEVELS

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    Martha Isabel Posada

    2009-12-01

    Full Text Available El objetivo del estudio fue evaluar la capacidad de la vegetación para mitigar el ruido en el valle de Aburrá. La metodología comprendió dos fases: la primera consistió en la revisión de información secundaria relacionada con dicha función de la vegetación, lo que permitió obtener las bases conceptuales para el posterior desarrollo experimental. En la segunda fase se realizó la medición de los niveles de ruido a 10 m de la fuente sonora (vía de alto tráfico vehicular en zonas verdes públicas urbanas con diferentes coberturas vegetales (arbórea, arbustiva y arbórea-arbustiva y sin vegetación. Los resultados no arrojaron diferencias significativas entres los sitios con vegetación y sin ella, lo que permite inferir que en las condiciones del estudio, caracterizadas por contar con unos pocos individuos arbóreos o arbustivos dispersos y poco densos, la vegetación no cumple un papel significativo en la disminución del ruido. Por lo tanto, para su control en zonas urbanas deben tomarse medidas diferentes a la plantación de árboles, o establecer barreras vivas más anchas, largas, altas y densas.O objetivo do estudo foi avaliar a capacidade da vegetação para mitigar o ruído no vale de Aburrá. A metodologia compreendeu duas fases: a primeira consistiu na revisão de informação secundária relacionada com dita função da vegetação, o que permitiu obter as bases conceptuais para o posterior desenvolvimento experimental. Na segunda fase se realizou a medição dos níveis de ruído a 10 m da fonte sonora (via de alto tráfico veicular em zonas verdes públicas urbanas com diferentes coberturas vegetais (arbórea, arbustiva e arbórea-arbustiva e sem vegetação. Os resultados não arrojaram diferenças significativas entre os lugares com vegetação e sem ela, o que permite inferir que sob as condições do estudo, caracterizadas por contar com uns poucos indivíduos arbóreos ou arbustivos dispersos e pouco densos, a vegeta

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

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    Gustavo Puggina Rogatto

    2004-08-01

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

  11. Los mecanismos de influencia en el liderazgo

    OpenAIRE

    Arango Cardona, Patricia

    2016-01-01

    Este trabajo tiene como objetivo fundamental identificar las tácticas de influencia que utiliza el señor Carlos Pérez, gerente y socio principal de G. & M., en su trato cotidiano con sus colaboradores, así como la reacción de estos últimos ante dichas tácticas.

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

    Directory of Open Access Journals (Sweden)

    Mª Carmen Carmona-Navarro

    2012-12-01

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

  13. Influência da redação da prescrição médica na administração de medicamentos em horários diferentes do prescrito Influencia de la redación de la prescripción médica en la administración de medicamentos en horarios diferentes al prescripto Influence of the writing of the medical orders on the administration of medications at the wrong schedule time

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    Fernanda Raphael Escobar Gimenes

    2009-01-01

    Full Text Available OBJETIVO: Analisar a influência da redação da prescrição médica na administração de medicamentos em horários diferentes do prescrito ocorridas em unidades de clínica médica de cinco hospitais brasileiros. MÉTODOS: Trata-se de estudo descritivo que utilizou dados secundários obtidos de uma pesquisa multicêntrica realizada em 2005. A amostra foi composta por 1084 doses de medicamentos administradas em horários diferentes do prescrito. RESULTADOS: Do total analisado, 96,2% apresentavam siglas e/ou abreviaturas; 7,8% apresentavam o registro do horário de administração incompleto e 4,8% destes registros estavam rasurados. Ainda, faltou o horário e/ou a freqüência de administração em 1,9% das prescrições. CONCLUSÃO: Com a implantação do sistema computadorizado de prescrições, associada à prática da educação permanente será possível minimizar a administração de medicamentos em horários diferentes do prescrito.OBJETIVO: Analizar la influencia de la redacción de la prescripción médica en la administración de medicamentos en horarios diferentes al prescripto ocurridas en unidades de clínica médica de cinco hospitales brasileños. MÉTODOS: Se trata de un estudio descriptivo que utilizó datos secundarios obtenidos de una investigación multicéntrica realizada en el 2005. La muestra estuvo compuesta por 1084 dosis de medicamentos administradas en horarios diferentes al prescripto. RESULTADOS: Del total analizado, el 96,2% presentaba siglas y/o abreviaturas; el 7,8% presentaba el registro del horario de administración incompleto y el 4,8% de estos registros estaban borrados. Aun más, faltó el horario y/o la frecuencia de administración en el 1,9% de las prescripciones. CONCLUSIÓN: Con la implantación del sistema computarizado de prescripciones, asociada a la práctica de la educación permanente será posible minimizar la administración de medicamentos en horarios diferentes al prescripto.OBJECTIVE: To

  14. Conselho de Administração: uma análise da influência nos níveis de endividamentoBoard of Directors: an analysis of the impact in debt levelsConsejo de Administración: un análisis de la influencia en los niveles de endeudamiento

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    ALMEIDA, Moisés Araújo

    2011-12-01

    Full Text Available RESUMOOs escândalos financeiros das últimas duas décadas realçaram os debates sobre as práticas de governança corporativa das empresas. Nesse mesmo período, órgãos governamentais e não governamentais contribuíram para a evolução da governança, permitindo uma maior segurança aos possíveis investidores. Neste contexto, o conselho de administração apresenta-se como um mecanismo de Governança Corporativa, cuja missão é proteger e valorizar o patrimônio e maximizar o retorno dos investimentos corporativos. Este artigo tem como objetivo verificar a influência do conselho de administração sobre o endividamento das empresas listadas nos níveis diferenciados de governança corporativa da BM&F Bovespa, no ano de 2008. O presente trabalho pode ser classificado como uma pesquisa descritiva e empírica. Para analisar a influência do conselho no endividamento das empresas foi utilizado o método de Mínimos Quadrados Ordinários, numa amostra de 129 empresas. Os resultados mostraram que a proxy do conselho, apresentou uma relação negativa com o endividamento total e de longo prazo. Para as dívidas de curto prazo a relação foi positiva. Estes resultados podem ser interpretados como uma sinalização de que as empresas com melhores práticas de governança, ou seja, com maiores pontuações no índice utilizado, tendem a usar mais dívidas de curto prazo e menos dívidas de longo prazo. Desta maneira, entende-se que, devido à concentração de propriedade das empresas brasileiras, essas evidências refletem a aversão ao endividamento por parte dos controladores. Outra interpretação seria que a dívida, em particular a dívida de curto prazo, apresenta um potencial para disciplinar os gestores.ABSTRACTThe financial scandals of the last two decades have highlighted the debate on corporate governance practices of companies. In the same period non-governmental bodies have contributed to the evolution of governance, enabling

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

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    Sibel Ergün

    2012-01-01

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

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

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    Marilene Loewen Wall

    2009-06-01

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

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

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    Inigo Virto

    2013-07-01

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

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

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    Rivanda Meira Teixeira

    2011-03-01

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

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

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    Renata Maria Souza Oliveira

    2009-02-01

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

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

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    Paulo José Bastos Barbosa

    2010-01-01

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

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

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    Eliana Janet Sanjinez-Argandoña

    2010-05-01

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

  2. Influencia de la Medicina Francesa en Colombia

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    Ernesto Andrade Valderrama

    1991-12-01

    Full Text Available

    Me da autoridad para hablar ante ustedes, quienes por segunda vez en nuestra Historia y ahora en una seria Asociación reviven los lazos de la Medicina Colombiana con la gran Escuela Francesa, el haber pertenecido a una de las últimas generaciones, formadas en la Universidad Nacional, que estudiaron toda la carrera en los textos provenientes de ese país y recibieron de maestros, casi todos formados bajo esa notable influencia, todos los principios y normas del ejercicio profesional. Disminuída casi al mínimo, tras la ruptura de comunicación y situación originada por la Segunda Guerra Mundial y tras los cambios, que en el orden social y tecnológico han ocurrido en estos últimos cincuenta años, hoy buscan todas las entidades que tienen a su cargo la Educación Médica, revivir la imagen de un médico general, familiar o comunitario, que pueda restituir la perdida relación Médico-Paciente, base de la antigua Escuela Francesa y que correctamente orientado y utilizando la esplendorosa tecnología de este final de siglo, pueda ser la salvación para el cuidado integral del paciente del próximo milenio que se avecina.

    A través de la Historia, se ha visto cómo el cetro de la Medicina ha rotado por diversas culturas y países. España, por razones políticas, alejada de Francia, recibió, en el campo médico el influjo de Alemania e Inglaterra. A sus colonias de América, fué muy poco lo que de ellas llegó. Sólo hasta finales del siglo XVIII, vino un hombre genial, naturalista y médico, quien pasara a la Historia Universal con la célebre Expedición Botánica y que fué el padre de la medicina colombiana: José Celestino Mutis. El puso en marcha la primera Escuela de Medicina, en 1802 y allí estudiaron los primeros médicos que pasada la Guerra de la Independencia, encabezados por José Félix Merizalde, habrían de recibir la primera Misión Francesa, en 1823.

    Médicos franceses conocidos antes en el país fueron

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

    Energy Technology Data Exchange (ETDEWEB)

    Lessa, Patricia Silva

    2001-10-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Lourenco, Cecilia de Oliveira

    2000-07-01

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

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

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    Jefferson Rosa Cardoso

    2005-10-01

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

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

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    Marcos Emanuel Wortmann Gomes

    2003-12-01

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

  7. Influencia del advergaming en los jóvenes universitarios de Lima

    Directory of Open Access Journals (Sweden)

    Alice Garrido Gallardo

    2014-11-01

    Full Text Available En tiempos donde el consumidor es capaz de encontrar lo que desea sin ser interrumpido por la publicidad, los anunciantes ven necesaria la tarea de expandir sus mensajes por medio de nuevas alternativas que acerquen al público con la marca de manera atractiva. El advergame forma parte de estas nuevas herramientas ya que busca fidelizar al consumidor mediante juegos interactivos que representen los valores, características y beneficios de la marca. Para conocer cuál es la influencia de esta herramienta publicitaria en los jóvenes de la ciudad de Lima, este artículo realiza un análisis sobre la actitud que ellos generan hacia la marca dependiendo del tratamiento que se le da en el juego, el tiempo de exposición y otras variables.

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

    Directory of Open Access Journals (Sweden)

    Thalita Duque Martins

    2007-02-01

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

  9. SPECT for smokers brain perfusion evaluation; SPECT para avaliacao da perfusao cerebral em fumantes

    Energy Technology Data Exchange (ETDEWEB)

    Maliska, C.M.; Martins, E.F.; Barros, D.S.; Lopes, M.M.S.; Lourenco, C.; Goncalves, S.; Goncalves, M.B.; Miranda, M.M.B.G.; Neto, L.M.; Penque, E.; Antonucci, J.B. [Instituto Nacional do Cancer, Rio de Janeiro, RJ (Brazil)

    2002-07-01

    Cigarette smoking increases brain stroke risk, however,five to fifteen years after ceasing this habit, brain perfusion recovers normal pattern. We propose to compare brain perfusion patterns performing brain SPECT scans of smokers and non-smokers. Thirteen volunteers age range 20-30 years old) composed of six non-smokers and seven smokers were studied by brain scans (SPECT).We used ECD- {sup 99m} Tc radiolabelled as recommended by the manufacturer. All patients received 740 MBq of the radiopharmaceutical through intravenous injection, with their eyes opened and their ears unplugged, in a quiet room. We used a one head SPECT camera ( General Electric/ StarCam 4000 and Siemens/ E.Cam) with low-energy ultrahigh resolution collimator. Imaging begin 40 minutes after tracer injection. For reconstruction we used a Butterworth filter.The preliminary results showed brain perfusion deficit areas on five of the smokers while all non- smokers had normal brain perfusion scans. We believe that smoking increases the possibility of brain perfusion deficits. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2005-07-01

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

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

    Directory of Open Access Journals (Sweden)

    Gomes de Moraes, Adriana

    2008-10-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

  13. Radiological evaluation of the cranio vertebral junction; Avaliacao radiologica da transicao cranio-vertebral

    Energy Technology Data Exchange (ETDEWEB)

    Mello, Silvia Marcal Benicio de; Haetinger, Rainer Guilherme [Med Imagem - Beneficiencia Portuguesa de Sao Paulo, SP (Brazil). Setor de Cabeca e Pescoco]. E-mail: sbm@uol.com.br; Schettini, Marianna Cunha; Lima, Sergio Santos [Med Imagem - Beneficiencia Portuguesa de Sao Paulo, SP (Brazil); Mourao, Maria Lucia; Mendonca, Renato Adam [Med Imagem - Beneficiencia Portuguesa de Sao Paulo, SP (Brazil). Setor de Neuroradiologia

    2005-04-15

    The cranio vertebral junction (CVJ) comprises the occiput, atlas, their joints and ligaments. Besides conventional x-rays other imaging methods are need for the assessment of CVJ including high resolution computerized tomography (CT) and magnetic resonance imaging (MRI) which provide specific parameters such as field of view, slice thickness and incremental movement of the patient. A dynamic study is also important to assess the stability of the cranio vertebral junction and the effect upon the bulbomedullary junction. The aim of this study is to review the techniques used in the evaluation of the CVJ, the semiological parameters, and the most frequent disorders affecting this region. We review the literature and present conventional x-ray, CT and MRI images from the didactic file of the Radiology service 'Med Imagem - Beneficiencia Portuguesa de Sao Paulo, SP, Brazil, of cases with normal anatomy and the main congenital and acquired disorders of the CVJ. In daily practice, CVJ disorders are diagnoses using CT and MRI scans of the head and cervical spine. It is essential to be familiar with these conditions in order to preform specific tests which will allow a detailed study of the CVJ, thus providing the basis for the treatment, whenever indicated. (author)

  14. Crystallinity evaluation of polyhydroxybutyrate and polycaprolactone blends; Avaliacao da cristalinidade de blendas de polihidroxibutirato e policaprolactona

    Energy Technology Data Exchange (ETDEWEB)

    Cavalcante, Maxwell P.; Rodrigues, Elton Jorge R.; Tavares, Maria Ines B., E-mail: maxdpc@gmail.com [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Instituto de Macromoleculas

    2015-07-01

    Polyhydroxybutyrate, PHB, is a polymer obtained through bacterial or synthetic pathways. It has been used in the biomedical field as a matrix for drug delivery, medical implants and as scaffold material for tissue engineering. PHB has high structural organization, which makes it highly crystalline and brittle, making biodegradation difficult, reducing its employability. In order to enhance the mechanical and biological properties of PHB, blends with other polymers, biocompatible or not, are researched and produced. In this regard, blends of PHB and polycaprolactone, PCL, another biopolymer widely used in the biomedical industry, were obtained via solution casting and were characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and low field nuclear magnetic resonance (LF-NMR). Results have shown a dependence between PHB's crystallinity index and PCL quantity employed to obtain the blends.(author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2005-10-15

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

  17. Magnetomotive colon elastography: preliminary assessment; Elastografia magnetomotriz da regiao do colon: avaliacao preliminar em phantoms

    Energy Technology Data Exchange (ETDEWEB)

    Bruno, A. Colello, E-mail: alexandrecolellobruno@usp.br [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Medicina; Grillo, F.W.; Sampaio, D.R.T.; Carneiro, A.A.O. [Universidade de Sao Paulo (USP), Ribeirao Preto, SP (Brazil). Faculdade de Filosofia Ciencias e Letras

    2015-08-15

    Colorectal cancer (CRC) is the third most common malignant neoplasm worldwide and early diagnosis reduces morbidity. The standard preventive exams methods are uncomfortable for the patient, invasive, and /or are ionizing. Here, we evaluate the potential of magneto-motive ultrasound (MMUS) as a new, minimally invasive CRC screening technique. We developed a hybrid transducer (comprised of an ultrasound probe and a magnetic coil system) to construct relative elastography maps in a paraffin phantom with isoechoic inclusions. The electromagnetic component of our system manipulated ferromagnetic fluid located inside of our synthetic colon, and the captured ultrasound images were used to produce relative elastography maps. The MMUS images reveal by otherwise invisible structures based on differences in stiffness. Ultrasound elastography (relative) images by MMUs technique complements usual preventive CRC exams, is minimally invasive, has relative low cost when compared with others image methods. Also is fast diagnose and more comfortable for patient which prevents withdrawal of the screening. (author)

  18. INFLUENCE OF THE STORY STIFFNESS OF REINFORCED CONCRETE FRAME WITH PROPORTIONAL HYSTERETIC DAMPERS ON THE SEISMIC RESPONSE INFLUENCIA DE LA RIGIDEZ DE PISO DE PÓRTICOS DE CONCRETO REFORZADO CON DISIPADORES HISTERÉTICOS PROPORCIONALES SOBRE LA RESPUESTA SÍSMICA INFLUÊNCIA DA RIGIDEZ DE ANDAR DE PÓRTICOS DE CONCRETO REFORÇADO COM DISIPADORES HISTERÉTICOS PROPORCIONAIS SOBRE A RESPOSTA SÍSMICA

    Directory of Open Access Journals (Sweden)

    Juan Andrés Oviedo

    2012-06-01

    Full Text Available This paper investigates the influence of the story stiffness of reinforced concrete (R/C frame on the seismic response of R/C buildings with proportional hysteretic dampers. For this purpose, non-linear time-history analyses were conducted on a series of multi-degree-of-freedom system models that include a wide range of structural parameters and vertical distributions of story stiffnesses and strengths of R/C main frame and dampers. Although the basic purpose of damper installation is to reduce deformation demands, the results of analyses indicate that the story-drift demand on an entire system could be larger than that of the structure without dampers, depending highly on the stiffness and response period of R/C main frame. Moreover, dampers are shown to be more efficient in reducing the story-drift demand when installed into a flexible R/C main frame.Este artículo investiga la influencia de la rigidez de piso del pórtico de concreto reforzado sobre la respuesta sísmica de edificaciones de concreto equipadas con disipadores histeréticos proporcionales. Para esto, fueron llevados a cabo análisis cronológicos no lineales sobre una serie de modelos de sistemas de múltiples grados de libertad. Los modelos incluyen un amplio rango de parámetros estructurales y diferentes distribuciones en altura de rigideces y resistencias de piso del pórtico principal de concreto y de los disipadores. Aunque el objetivo básico de instalar disipadores sea reducir la demanda de deformación en la estructura, los resultados de los análisis indican que la demanda de deriva de piso del sistema completo puede ser incluso más grande que la de la edificación sin disipadores, dependiendo en gran medida de la rigidez y del período de respuesta del pórtico principal de concreto. Por otra parte, se muestra que los disipadores son más eficientes para reducir la demanda de deriva de piso cuando se instalan en pórticos flexibles de concreto.Este artigo pesquisa a

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

    Directory of Open Access Journals (Sweden)

    Liu Chiao Yi

    2014-01-01

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

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

    Directory of Open Access Journals (Sweden)

    Fernando Filardi

    2011-06-01

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

  1. Influencia local em modelos de series temporais

    OpenAIRE

    Bruno Reis dos Santos

    2008-01-01

    Resumo: Nesta dissertação é discutido o uso da metodologia de diagnóstico de Influência Local em modelos de séries temporais. Especificamente, serão estudados os modelos autoregressivos de ordem um, os modelos de regressão com erros autoregressivos de ordem um e modelos de longa-memória. As medidas de influência local consideradas são: Inclinação de Billor e Loynes e Curvatura de Cook. As principais contribuições nesta dissertação são duas. Primeiro, a utilização da metodologia de limiares (b...

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-05-15

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

  3. Evaluation of the numerical solution of polymer flooding; Avaliacao da solucao numerica da injecao de polimeros em reservatorios de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, Vinicius Ligiero; Pires, Adolfo Puime; Bedrikovetsky, Pavel G. [Universidade Estadual do Norte Fluminense (UENF), Macae, RJ (Brazil). Lab. de Engenharia e Exploracao do Petroleo (LENEP)

    2004-07-01

    Enhanced Oil Recovery (EOR) methods include injection of different fluids into reservoirs to improve oil displacement. The EOR methods may be classified into the following kinds: injection of chemical solutions, injection of solvents and thermal methods. The chemical fluids most commonly injected are polymers, surfactants, micellar solutions, etc. Displacement of oil by any of these fluids involves complex physico-chemical processes of interphase mass transfer, phase transitions and transport properties changes. These processes can be divided into two main categories: thermodynamical and hydrodynamical ones. They occur simultaneously during the displacement, and are coupled in the modern mathematical models of EOR. The model for one-dimensional displacement of oil by polymer solutions is analyzed in this paper. The Courant number is fixed, and we compare the results of different runs of a numerical simulator with the analytical solution of this problem. Each run corresponds to a different spatial discretization. (author)

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

    Directory of Open Access Journals (Sweden)

    Keika Inouye

    2010-12-01

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

  5. A Mitologia na Representação cultural e no consumo :Efeito e recepção do signo da cachaça

    OpenAIRE

    SILVA, Daniella Ramos da

    2009-01-01

    Este trabalho relata o estudo da mitologia na representação cultural e no consumo da cachaça. A origem pobre da cachaça determinou a inerência de mitos de desqualificação em sua representação cultural, tornando-a estigmatizada. Tendo em vista que o consumo não é mais tido como uma simples compra de produtos (bens ou serviços), mas de significados, a representação influencia o consumo, assim como o consumo influencia a representação. Com base neste pressuposto, procurou-se enten...

  6. Influencia de la práctica deportiva en la integración sensorial en niños: Evaluación estabilométrica

    OpenAIRE

    Gómez Sánchez, Stella Maris

    2016-01-01

    Tesis Doctoral leída en la Universidad Rey Juan Carlos de Madrid en 2013. Directores de la Tesis: Rafael Linares García-Valdecasas y D. Antonio Gil Crujera Objetivo: Evaluar la influencia de la actividad física en las oscilaciones posturales en niños y niñas sanos, así como los factores que pueden influir en el mantenimiento de la estabilidad postural. Métodos: Se incluyeron 39 niños y niñas que no realizaban deporte de manera regular y 44 niños y niñas que realizaban deporte al menos d...

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

    Directory of Open Access Journals (Sweden)

    Ana Carolina Ortiz

    2008-10-01

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

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

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    Éderson Luiz Piato

    2008-12-01

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

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

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    Bruna Figueiredo Manzo

    2013-02-01

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

  10. Estrutura organizacional do serviço de enfermagem: reflexões sobre a influência do poder e da cultura organizacional Estructura organizacional del servicio de enfermería: reflexiones sobre la influencia del poder y de la cultura organizacional Organizational structure of nursing services: reflections on the influence of the organizational power and culture

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    Marli de Carvalho Jericó

    2008-09-01

    Full Text Available Este estudo discute a cultura e o poder influenciando a estrutura organizacional do serviço de enfermagem em um hospital de ensino. A partir da necessidade de padronizar os procedimentos de enfermagem por parte da administração geral do hospital, foi desenhada a estrutura organizacional (organograma do Serviço de Enfermagem. Por causa desta situação, veio à tona o interesse dos enfermeiros gestores em ampliar o espaço de poder, fortalecendo a Enfermagem no ambiente intra-institucional.Este artículo analiza cómo la cultura y el poder influyen en la estructura organizacional del servicio de enfermería en un hospital-escuela. Basados en la necesidad de protocolizar los procedimientos de enfermería, por parte de la administración general del hospital, se diseñó la estructura organizacional (organigrama del Servicio de Enfermería. De esta forma fue evidenciado el interés de los enfermeros-jefes por ampliar el poder, fortaleciendo el sector de enfermería dentro del ámbito institucional.This study addresses the culture and power influencing the organizational structure of the nursing services at a teaching hospital. The Nursing Service organizational structure (organization chart was outlined due to the need of the general management of the hospital to standardize the nursing procedures. Due to this situation, the nursing managers' interest has arisen to widen the power setting, strengthening nursing in an intra-institutional environment.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-10-26

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

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

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    MSc. Rolando Medina Peña

    2016-04-01

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

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

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    María de la Villa Moral Jiménez

    2013-08-01

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

  14. Influencia del polvo del horno de cemento sobre plantas y animales

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    Pajenkamp, H.

    1963-06-01

    Full Text Available Not availableEl pretendido «polvo de cemento» de los alrededores de las fábricas no es de cemento, sino que se compone, en su mayor parte, de caliza molida muy fina. Es, por tanto, un producto intermedio de la fabricación del cemento. Sería mucho más correcto llamarle «polvo del horno de cemento». Continuamente alegan los agricultores que este «polvo del horno de cemento» es dañino para plantas y animales, y en los últimos años, para probar la validez de tales asertos, se han llevado a cabo numerosas investigaciones científicas para estudiar los efectos de este polvo. Estamos hoy día en posesión de una serie· de trabajos muy completos que dan una idea clara sobre el efecto del polvo del horno de cemento. Los animales domésticos útiles (por ejemplo: corderos, vacas de leche no sufren ningún perjuicio clínico, ninguna deficiencia de su estado general, a pesar de serie administradas grandes dosis de polvo. Los ensayos agrícolas con plantas útiles (avena, trébol, remolacha azucarera, pastos que han sido efectuados durante varios años, han demostrado que ni siquiera cantidades elevadas de polvo provocan perjuicios ni influencias nefastas sobre el crecimiento y sobre la recolección.

  15. Una retórica de la influencia

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    Cecilia González

    2008-07-01

    Full Text Available Entre las últimas décadas del siglo XIX y las primeras del XX se publica en el Río de la Plata un número considerable de relatos anclados en los debates que recorren la cultura europea del momento y que giran en torno a fenómenos de influencia. Este denominador común se declina, según los textos, en una serie de temas privilegiados : hipnosis, sugestión, herencia, mimetismo, vampirismo, parasitismo, emanación de todo tipo de rayos, ondas y fluidos capaces de modificar el comportamiento de un ...

  16. Influencia lunar en cultivos, animales y ser humano

    OpenAIRE

    Mera Andrade, Rafael; Artieda Rojas, Jorge; Muñoz Espinoza, Manolo; Romero Viamonte, Katherine

    2017-01-01

    Los saberes ancestrales son la base para solucionar problemas de manera sencilla. La luna, desde tiempos pasados se ha mostrado como un indicador de afectaciones tanto en el suelo, los animales de distintas regiones y el hombre. La influencia lunar tiene un gran efecto en la pecuaria, debido a que los animales dependen de la luminosidad para alimentarse o salvaguardar su vida, las fases lunares tienen un efecto positivo en la ganadería y en los animales marinos ya que benefician algunos aspec...

  17. Influência do processo de familiarização para avaliação da força muscular em testes de 1-RM Influencia del proceso de familiarizacion para evaluación de la fuerza muscular en tests de 1-RM Influence of familiarization process on muscular strength assessment in 1-RM tests

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    Raphael Mendes Ritti Dias

    2005-02-01

    Full Text Available Embora testes de uma repetição máxima (1-RM sejam freqüentemente utilizados para a avaliação da força muscular, acredita-se que os resultados obtidos possam ser afetados pela falta de familiarização prévia, até mesmo em sujeitos com experiência em exercícios com pesos. Assim, o objetivo deste estudo foi investigar o impacto do processo de familiarização para avaliação da força muscular em testes de 1-RM. Para tanto, 21 homens (24,5 ± 3,8 anos, aparentemente saudáveis, com experiência prévia de pelo menos seis meses em treinamento com pesos, foram submetidos a testes repetitivos de 1-RM nos exercícios supino em banco horizontal, agachamento e rosca direta de bíceps. Os testes foram executados em quatro sessões, intervaladas a cada 48-72 horas. Um número máximo de três tentativas, com intervalo de três a cinco minutos para recuperação, foi utilizado em cada exercício, nas quatro sessões de testagem. ANOVA para medidas repetidas, seguida pelo teste post hoc de Tukey, quando p 0,05, bem como entre a terceira e a quarta sessão no supino em banco horizontal e no agachamento (p > 0,05. Os resultados indicam que a falta de familiarização prévia com testes de 1-RM pode comprometer a avaliação da força muscular. Portanto, sugere-se, para avaliação mais acurada da força muscular mediante testes de 1-RM, a execução de duas a três sessões de familiarização em homens adultos com experiência em exercícios com pesos.Embora la utilización de tests de una repetición máxima (1-RM es frecuente para la evaluación de la fuerza muscular, se acredita que los resultados obtenidos puedan ser afectados por la falta de familiarización previa, hasta mismo en sujetos con experiencia en ejercicios con pesos. Asi, el objetivo de este estudio fué investigar el impacto del proceso de familiarización para evaluación de la fuerza muscular en tests de 1-RM. Por lo tanto, 21 hombres (24,5 ± 3,8 años, aparentemente

  18. INFLUENCIA DE LA ADICIÓN DE UNA FUENTE DE NITRÓGENO EN LA PRODUCCIÓN DE LIGNINASAS INFLUENÇA DA ADIÇÃO DE UMA FONTE DE NITRÔGENIO NA PRODUÇÃO DE LIGNINASE INFLUENCE THE ADDITION OF NITROGEN SOURCE ON PRODUCTION OF LIGNINASES

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    LINA MARCELA GIL

    2012-06-01

    Full Text Available Durante el proceso de extracción de aceite de palma se producen grandes cantidades de residuos ricos en lignina y hemicelulosa denominados 'raquis', los cuales fueron un buen sustrato para el crecimiento del hongo Pleurotus ostreatus en fase solida durante 10 días de fermentación y a una temperatura de 28°C. Este trabajo se enfoco en evaluar la actividad enzimática de la lacasa, manganeso peroxidasa y lignina peroxidasa a partir del cultivo de Pleurotus ostreatus sobre residuos de palma modificando las condiciones de tamaño de partícula del sustrato (2, 3 y 4 cm y la fuente de nitrógeno (NH4Cl y KNO3. La actividad de la lignina peroxidasa fue casi nula en el sustrato sin suplemento. Por otro lado, las mejores condiciones encontradas para la producción de lacasa (7,42 U/L fue en cultivo sin suplemento con tamaño de partícula de 3cm, y para manganeso peroxidasa (20,29 U/L fue en el cultivo suplementado con nitrato de amonio (NH4Cl en una relación de carbono/nitrógeno de 20 y un tamaño de partícula de 3cm.Durante o processo de extração de óleo de palma são produzidas grandes quantidades de resíduos que são ricos em lignina e hemicelulose, os quais foram um bom substrato para o crescimento do fungo Pleurotus ostreatus na fermentação durante 10 dias a uma temperatura de 28 ° C na fase sólida. Este trabalho concentrou-se em avaliar a atividade enzimática da lacase, manganese peroxidase e lignina peroxidase de Pleurotus ostreatus em resíduos de palma de óleo mudando as condições do tamanho das partículas do substrato (2, 3 e 4 cm e fonte de nitrogênio (NH4Cl e KNO3. Os resultados mostraram que a atividade da peroxidase lignina foi quase zero no substrato sem adição de suplemento. Para a produção de lacase (7,42 U/L a melhor condição foi encontrada para um tamanho de partícula de três centímetros sem adição de suplemento, e para manganese peroxidasa (20,29 U/L a melhor condição é para uma cultura com nitrato

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

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    Neide Aparecida Titonelli Alvim

    2006-06-01

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

  20. Mecanismos de Governança e Processos de Sucessão: um estudo sobre a influência dos elementos da governança corporativa na orientação do processo sucessório em uma empresa familiarGovernance Mechanisms and Processes of Succession: a study on the influence of the elements of corporate governance in the direction of the succession process in a family businessMecanismos de Gobernanza y Procesos de Sucesión: un estudio sobre la influencia de los elementos de la gobernanza corporativa en la orientación del proceso sucesorio en una empresa familiar

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    PEREIRA, Rafael Diogo

    2009-06-01

    Full Text Available RESUMOO presente estudo tem por objetivo analisar a forma pela qual o desenvolvimento de estruturas e mecanismos de governança corporativa influenciam a orientação da sucessão e a mediação de conflitos entre a família, a propriedade e a gestão em uma empresa familiar. Partiu-se da construção de um panorama teórico focado na análise dos estudos sobre empresas familiares, governança e sucessão empresarial. Foram considerados fatores tangíveis, como alterações na estrutura de propriedade, e intangíveis, como alterações na dinâmica de relações de poder e da esfera de influência da família. As evidências empíricas foram levantadas a partir do método de estudo de caso, por meio de entrevistas semi-estruturadas com membros da família proprietária, representantes do Conselho de Administração de uma empresa do setor têxtil, localizada no estado de Minas Gerais. Para o tratamento dos dados, recorreu-se à técnica de análise temática do conteúdo das entrevistas e os resultados indicam que a empresa estudada apresenta um considerável avanço no sentido de implementar mecanismos de governança que contemplem as dimensões da família, da propriedade e da gestão, auxiliando a empresa a estruturar os futuros processos de sucessão, bem como a mediar os conflitos de interesses naturalmente existentes entre os diversos stakeholders envolvidos.ABSTRACTThe objective of this study was to analyze the way in which the development of structures and mechanisms of corporate governance influence the direction of the succession and the mediation of conflicts between the family, the property and the management in a family-owned enterprise. A revision was carried out initially about studies on family-owned enterprises, corporate governance and succession. Tangible factors were considered as alterations in the property structure, and intangible, like alterations in the dynamics of the power relationships and the sphere of influence of

  1. Evaluation of the crude oil viscosity variation in function of the demulsifiers addition; Avaliacao da variacao da viscosidade de oleo cru em funcao da adicao de desemulsificante

    Energy Technology Data Exchange (ETDEWEB)

    Lopes, Jansen M.; Lucas, Elisabete F. [Universidade Federal, Rio de Janeiro, RJ (Brazil). Inst. de Macromoleculas]. E-mail: elucas@ima.ufrj.br; Neves, Guilherme B.M. [COMAB Especialidades Quimicas Ltda., Rio de Janeiro, RJ (Brazil)]. E-mail: tecnico@comabrio.com

    2003-07-01

    One way of improving well production is the addition of demulsifier already in the gas lift. This is due to the apparent viscosity of water-in-oil emulsions being higher than apparent viscosity of crude oil, which in turn is higher than the apparent viscosity of an water-in-oil dual phase admixture and is also higher than the apparent viscosity of an oil-in-water emulsion. However, there are some situations where, in order to obtain separate flows of oil and water phases, demulsifier should be added in specific amounts in order to promote the desired phase separation. In heavy oils water and oil phase separation may be hard to obtain, however, the right demulsifier amount may imply in a considerable decrease in petroleum viscosity even without the appearance of two phases, making the flow easier. This work has evaluated the viscosity of a heavy crude having API degree 14 and BSW 52%, as a function of the addition of different amounts of DEMTROL BR 67, manufactured by Dow Quimica/Comab, Brazil, as demulsifier. (author)

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

    Directory of Open Access Journals (Sweden)

    Zenewton André da Silva Gama

    2007-02-01

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

  3. Influencia de la reserva cognitiva en la calidad de vida en sujetos con enfermedad de Alzheimer

    Directory of Open Access Journals (Sweden)

    Juan L. Sánchez-Rodríguez

    2013-10-01

    Full Text Available La calidad de vida (CV se define como la percepción personal que un individuo tiene de su situación vital. Dentro de los factores que pueden influir en la CV, se encuentra la Reserva Cognitiva (RC, que podría entenderse como la capacidad del cerebro para hacer frente al daño cerebral generado por la patología, mediante procesos cognitivos preexistentes o compensatorios. El objetivo principal de este estudio, consiste en analizar, como influye la RC en la auto-percepción subjetiva de la CV en sujetos diagnosticados de Enfermedad de Alzheimer (EA y comprobar si existen perfiles diferenciales en función de la sintomatología depresiva y el estado cognitivo de los mismos. La muestra utilizada estaba formada por 112 sujetos que se distribuyeron en dos grupos: uno de 74 sujetos diagnosticados de EA, y otro de 38 sujetos sanos. Se ha utilizado el cuestionario SF-36 para evaluar la CV. En relación a la variable RC, destacar que los sujetos con mayor RC, puntuaron más alto en cada una de las dimensiones del SF-36. La RC podría ser una fuente de influencia en la percepción de la CV de las personas con EA, en la medida en que sus diversos componentes conducirían a la consecución de una capacidad funcional más óptima y una aceptación del estado cognitivo.

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

    Energy Technology Data Exchange (ETDEWEB)

    Szarota, Rosa Maria

    2006-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Szarota, Rosa Maria

    2006-07-01

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

  6. Temperature influence in crystallinity of polymer microspheres; Influencia da temperatura na cristalinidade de microesferas polimericas

    Energy Technology Data Exchange (ETDEWEB)

    Rezende, Cristiane de P.; Novack, Katia M., E-mail: knovack@iceb.ufop.br [Universidade Federal de Ouro Preto - UFOP, ICEB, DEQUI, Ouro Preto, MG (Brazil)

    2011-07-01

    Drug delivery technology is evolving through the creation of new techniques of drug delivery effectively. The new methods used in drugs administration are based in microencapsulation process. Microsphere encapsulation modifies drug delivery bringing benefits and efficiency. In this work has been evaluated the influence of temperature in microspheres preparation. Microspheres were obtained by PMMA-co-PEG (COP) copolymer with indomethacin inserted in polymer matrix. Samples were characterized by SEM, DSC and XRD. SEM micrographs confirmed the formation of different sizes of microspheres and it was verified that higher temperatures make more crystalline microspheres. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2008-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-10-26

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-10-26

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2013-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

  12. Evaluation of kerma rate in radioactive waste disposal; Avaliacao da taxa de kerma em deposito de rejeitos radioativos

    Energy Technology Data Exchange (ETDEWEB)

    Rosa, Rodolfo O.; Silva, Joao C.P.; Santos, Joao R. dos, E-mail: oliveira@ien.gov.br, E-mail: jcarlos@ien.gov.br, E-mail: regis@ien.gov.br [Instituto de Engenharia Nuclear (IEN/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2014-07-01

    This study aims to assess the progression of kerma rate levels in the air due to the increase of collection, storing and storage of radioactive waste in the new building (after expansion) of the radioactive waste disposal (RWD) of the Instituto de Engenharia Nuclear (IEN/CNEN-RJ), Brazil. This review is carried out every six months at IEN with thermoluminescent dosimeter lithium fluoride LiF: Mg, Cu, P (TLD-100H). Here are the average values of kerma rate for the period 2008- 2012. In this context, the methodology used for selection and choices of detectors used in dosimeters is presented. The detectors were chosen through homogeneity criteria of the pack, standardization factor and coefficient of variation (CV%). The monitoring points and the exposure time of the detectors are chosen considering various factors, including the rate of occupation and indoor and outdoor positions to RWD. These evaluations showed that the contribution of the new waste disposal in increasing kerma rate of IEN, has proved to be insignificant, that is, the presence of RWD does not contribute to increased environmental kerma rate in the region around this installation.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-15

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

  15. Cementing quality evaluation with ultrasonic logs in fiberglass casings; Avaliacao da qualidade do cimento em revestimentos de fibra de vidro

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Wellington; Lazaro, Andre F. [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The sonic and ultrasonic profiles are used as the main tools in assessing the cementing quality between formation and casing in oil wells. This assessment is important, because, if there is a failure in the primary cementing, both the structural integrity and zone isolation will be compromised. The sonic profiles are based on the acoustic energy attenuation in casing, cement and formation, while the ultrasonic profiles are based on the resonance of the wave pulse within the media where they travel (casings, cement and formation). The attenuation and resonance are due to the difference in the way the wave travel within these media. The acoustic impedance is the quantification of this difference, determining the refraction and reflection between the environments, and wave attenuation as well. In steel casings, this difference is meaningful, allowing the captured signals (reflected pulses) to be interpreted as good adhesion between cement and casing, or a lack of adhesion at some interval. In fiber glass casings, the impedance contrast between glass and cement is small and not detectable with the CBL/VDL sensors. The CBL/VDL tools provide an inefficient assessment of the quality of the cementing. The ultrasonic profile does not have this problem, theoretically. The goal of this work is to demonstrate and recommend the ultrasonic tool as the main instrument to assess the cementation quality in fiber glass casings. (author)

  16. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-10-26

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

  18. Evaluation of integrity of radiation sources of nuclear gauges; Avaliacao da integridade de fontes radioativas de medidores nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Torohate, Wiclif Francisco

    2016-11-01

    Nuclear equipment meters are mainly used in the industry in quality control and process control. The principle of operation consists in a shielded radioactive source together with a radiation detector such that the radiation interacts with the material to be analyzed before reaching the detector, providing real time data. Can be as their fixed and mobile mobility, the unique properties of ionizing radiation are used in three basic modes, transmission, backscatter or dispersion or induced (reactive). With the advancement and technological modernization in the world, the demand for nuclear gauges becomes increasingly larger. Currently in Brazil there are about 465 process control plants and 21 portable systems and Mozambique about 45 facilities using nuclear gauges. This font registration is done through a process called source inventory that allows also to know the category of the source, the danger or risk to human health that the source offers. The handling of this equipment requires personnel, certified, skilled and well trained in radiation protection area in accordance with the requirements of the various CNEN Rules. Due to the presence of radioactive source and because these devices are used by workers risk because there external radiation. In this context, we made the smear test in two fixed meters from the IRD industry laboratory, which determines the integrity of the source package, mandatory item in periodic integrity testing of the radiation source of this type of device. A set of procedures is made for its implementation as an evaluation of the radiological risk by radiological survey. It was intended to contribute to the learning handling and safe use of these meters. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Villaverde, Freddy Lazo

    2008-07-01

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

  20. Influencia de la microestructura en el comportamiento en fatiga de aceros perlíticos

    Directory of Open Access Journals (Sweden)

    Toledano, M.

    2004-04-01

    Full Text Available This article accounts the relationship between the microstructure of pearlitic steels (influenced by the cold-drawn manufacturing process and the growing rate of sub critical cracks, produced by a cyclic-constant amplitude load. The microstructural study is performed in two levels: the pearlitic colony (first level and the pearlitic lamellar microstructure (second microstructural level. The analysis of the fatigue behaviour was focused on the region II of the fatigue crack propagation regime, in which the crack growing rate per cicle, da/dN, is controlled by the amplitude of the stress intensity range, as described by Paris law. The enhancement of the fatigue behaviour, in the stable growing zone, is related with the progressive orientation of the pearlitic colonies in the cold drawing direction, showing a linear relation between the intersect parameter of the Paris law (mechanical property and the alignment angle of the microstructure.

    Este artículo pretende poner de manifiesto la influencia que los cambios microestructurales inducidos en un acero hipoeutectoide mediante un proceso de trefilado, tienen sobre la velocidad de crecimiento de fisuras sub-críticas, desarrolladas por solicitación cíclica con amplitud de carga constante. El análisis microestructural ha sido realizado a dos niveles: la colonia perlítica (primer nivel y la microestructura laminar de la perlita (segundo nivel microestructural. El análisis del comportamiento en fatiga se ha centrado en la región II del régimen de propagación de fisuras por fatiga, en donde la velocidad de crecimiento de fisuras, da/dN, está controlada por la amplitud del factor de intensidad de tensiones, K, según queda descrito por la ley de Paris. Los resultados obtenidos muestran que la mejora en el comportamiento en fatiga de los aceros, en la zona de crecimiento estable de la fisura, se relaciona con el alineamiento de las colonias perlíticas en la dirección del trefilado

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

    Directory of Open Access Journals (Sweden)

    Jorge Ricardo Vivas

    2001-01-01

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

  2. Influence of communication on public opinion about nuclear energy; Influencia da comunicacao na aceitacao publica da energia nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Everton de Almeida [ELETROBRAS Termonuclear S.A., (ELETRONUCLEAR), Rio de Janeiro, RJ (Brazil)

    1997-12-31

    Public opinion on risks and benefits associated to nuclear energy is depending on psychological and social factors and mainly on the communication strategy used to transfer knowledge and facts about nuclear technology to the public. In this work, the individual and collective communication process and the influences on the public opinion on nuclear energy will be analyzed. (author) 3 refs., 1 fig.

  3. Regulación de las metalotioneínas durante el estrés y la inflamación, y su influencia durante la respuesta inflamatoria

    OpenAIRE

    Carrasco Trancoso, Javier

    2000-01-01

    Regulación de las metalotioneínas durante el estrés y la inflamación, y su influencia durante la respuesta inflamatoria. Las metalotioneínas (MTs) son unas proteínas de bajo peso molecular (6-7 kDa) con capacidad para ligar metales pesados como el Zn y el Cu. En los roedores existen cuatro isoformas diferentes denominadas MT-I, -II, -III y IV. Las MT-I y MT-II se expresan prácticamente en todos los tejidos del organismo y son inducibles por metales pesados, agentes oxidantes, hormonas, la inf...

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

    OpenAIRE

    Marcos Emanuel Wortmann Gomes; Paulo Ernani Evangelista; Florentino Fernandes Mendes

    2003-01-01

    JUSTIFICATIVA E OBJETIVOS: Sabe-se que a dor aguda pós-operatória apresenta grande influência na evolução dos pacientes cirúrgicos. Mobilização precoce, menor tempo de hospitalização, diminuição de custos e maior satisfação são resultados do adequado manuseio da dor. Observa-se uma tendência mundial ao surgimento de serviços especializados no tratamento da dor pós-operatória. O presente estudo visa descrever a influência da criação de um serviço de tratamento da dor aguda pós-operatória nos c...

  5. Influencia de la densidad y del confinamiento con geotextil en columnas de grava

    OpenAIRE

    Miranda Manzanares, Marina

    2014-01-01

    RESUMEN: El tratamiento con columnas de grava es uno de los métodos de mejora del terreno empleados habitualmente para la cimentación de terraplenes o estructuras sobre suelos blandos. El estudio realizado en esta Tesis Doctoral se centra en analizar: - La influencia de la densidad de la grava de la columna - El empleo de columnas ensacadas con geotextil. El análisis de la influencia de la densidad de la grava se ha realizado mediante ensayos realizados en laboratorio en modelo reducido con d...

  6. Influencia de la densidad y del confinamiento con geotextil en columnas de grava

    OpenAIRE

    Miranda Manzanares, Marina

    2014-01-01

    El tratamiento con columnas de grava es uno de los métodos de mejora del terreno empleados habitualmente para la cimentación de terraplenes o estructuras sobre suelos blandos. El estudio realizado en esta Tesis Doctoral se centra en analizar: - La influencia de la densidad de la grava de la columna - El empleo de columnas ensacadas con geotextil. El análisis de la influencia de la densidad de la grava se ha realizado mediante ensayos realizados en laboratorio en modelo reducido con dos densid...

  7. Música y cerebro: influencia del arte musical en la biología humana

    OpenAIRE

    Siesto Sánchez, Violeta

    2017-01-01

    Trabajo de fin de grado. Grado en Biología. Curso académico 2016-2017 El trabajo analiza la posible influencia de la música en el desarrollo de las habilidades humanas. Se analiza la anatomía humana relacionada en el proceso, desde el sistema auditivo hasta la corteza cerebral. La segunda parte del estudio lo pone en relación con el proceso de percepción y se refiere a la relaciónd el hombre con la música a lo largo de la historia, con particular atención a la influencia que pueda haber t...

  8. Influencia del tratamiento UV-C sobre carambola (Averrhoa carambola L. mínimamente procesada

    Directory of Open Access Journals (Sweden)

    María José Andrade

    2010-12-01

    Full Text Available Español:La carambola (Averroha carambola L. es una fruta tropical exótica, perteneciente a la familia de las oxalidáceas, muy cotizada en los mercados internacionales, conocida como “fruta-estrella” o “star-fruit”. Su cultivo fue introducido hace aproximadamente unos treinta años en el Ecuador. Los frutos se cosechan verdes, son altamente perecederos, se recomienda su conservación a temperaturas no menores a 5°C. Tiene una forma ovalada, alargada, con cinco aristas que al corte forman una estrella de cinco puntas por lo que se utiliza en la decoración de la cocina gourmet. El objetivo del presente estudio fue evaluar la influencia del tratamiento UV-C sobre la calidad de carambola mínimamente procesada almacenada a 5°C. Frutos recién cosechados, lavados y seleccionados, se cortaron en rodajas de 5 mm de ancho, se dividieron en dos grupos: frutos tratados (13 kJ/m2 y no tratados (controles y se almacenaron en bandejas plásticas cubiertas con film PVC durante 21 días. A los 7, 14 y 21 días se determinó la pérdida de peso, acidez, pH, sólidos solubles y se observó visualmente el avance de pardeamiento, decaimiento y firmeza al tacto. Los frutos tratados y controles presentaron un incremento en la pérdida de peso durante el almacenamiento, sin embargo, ésta fue menor en los frutos tratados. No se observaron diferencias significativas en los parámetros físico-químicos analizados a lo largo del almacenamiento. A los 14 días, los frutos control mostraron mayor pardeamiento y pérdida de firmeza que los tratados. Además, a este tiempo, los frutos control dejaron de ser consumibles dado que mostraban desarrollo de microorganismos. Los frutos tratados recién mostraron desarrollo fúngico a los 21 días de almacenamiento a 5ºC. Los resultados sugieren que el tratamiento UV-C retardó los síntomas de daño permitiendo la conservación de carambola mínimamente procesada con una buena calidad comercial por más tiempo.

  9. Índices bióticos para avaliação da qualidade ambiental em trechos do rio Correntoso, Pantanal do Negro, Estado do Mato Grosso do Sul, Brasil = Biotic indexes for the evaluation of environmental quality in stretches of the Correntoso river, Pantanal do Negro, Mato Grosso do Sul State, Brazil

    Directory of Open Access Journals (Sweden)

    Fábio Henrique da Silva

    2011-07-01

    Full Text Available Este trabalho teve como objetivo pesquisar a estrutura da comunidade de insetos aquaticos, utilizando esta comunidade como indicadora da qualidade ambiental de um trecho do rio Correntoso, Pantanal do Negro, Mato Grosso do Sul, Brasil. Foram realizadas seis campanhas de coleta em diferentes periodos sazonais: vazante, seca e cheia. Os organismos foram coletados utilizando rede D com malha de 300 ƒÝm eesforco amostral de cinco lances de rede nas raizes dos bancos de macrofitas. Foram comparados tres ambientes (aberto, intermediario e fechado, por juncao dos dados obtidos de seis sitios de coleta. Foi analisada a riqueza, abundancia absoluta e relativa das familias de insetos amostrados e a avaliacao da qualidade da agua usando o indiceBMWP, indice BMWP-ASPT, indice IBF e indice de diversidade de Shannon-Wienner, com log2. Foram registradas 60 familias pertencentes a 12 ordens da Classe Insecta, totalizando 19.773 individuos coletados. Entre os indices aplicados, o indice BMWP foi o que melhor representou as condicoes do ambiente estudado.This work aimed to research the aquatic insect community structure using this community as a bioindicator of the environmental quality in a stretch of the Correntoso river, in Pantanal do Negro, Mato Grosso do Sul, Brazil. Six collections were taken in different seasonal periods; ebb, dry and wet. The organisms were collected using a 300 ƒÝm mesh D net sweeping five times through the roots of macrophyte banks at each sample. Three environments were compared (open, intermediary, closed by adding the information from six collection sites. Family richness, absolute and relative abundance ofinsect samples and an evaluation of water quality were analyzed by using the BMWP index, BMWP-ASPT index, IBF index and Shannon diversity index, with log2. A total of 60 families from 12 orders of Insecta Class were recorded, totaling 19,773 individuals. Among the indexes applied, the BMWP index was the one that best

  10. Benefícios da aplicação de azoto, potássio e boro na fisiologia da oliveira em condições de sequeiro

    OpenAIRE

    Bacelar, E.A.; Correia, C.M.; Moutinho-Pereira, J.M.; Gonçalves, Berta; Arrobas, Margarida; Pavão, Francisco; Lopes, João; Cabanas, J.E.; Rodrigues, M.A.

    2007-01-01

    O azoto, o potássio e o boro são nutrientes que frequentemente condicionam a fisiologia da oliveira (Olea europaea L.). O azoto apresenta um papel primordial por ser constituinte de vários compostos orgânicos, em especial proteínas, ácidos nucleicos, hormonas e clorofila. O boro influencia directamente a produção por proporcionar maior desenvolvimento radicular, maximizando o aproveitamento da água e dos fertilizantes, bem como por estar directamente envolvido na formação da parede celular, c...

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-12-31

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Cotrim, Marycel Elena Barboza

    2006-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1996-08-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2004-07-01

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

  15. Study and evaluation of radiometry in photo therapeutic treatment of the neonatal hyperbilirubinaemia; Estudo e avaliacao da radiometria no tratamento fototerapico da hiperbilirrubinemia neonatal

    Energy Technology Data Exchange (ETDEWEB)

    Caly, Jose Pucci

    2009-07-01

    Phototherapy is a procedure established more than 50 years ago in the treatment of the newborn jaundice. However there is no a standard method to quantify the photo therapeutic dose in published clinical studies, hindering the comparison of previous studies on photo therapeutic effectiveness, as well as the establishment of safe and predictable doses. The photo therapeutic dose depends, among other factors, on the effective mean irradiance produced by the photo therapeutic unit. There are no standard procedures, however, neither to quantify the effective irradiance, nor to estimate the mean effective irradiance. As a consequence, large measurement variations in a same photo therapeutic unit are observed using different commercially available radiometers, as a consequence of the vast diversity of spectral responsivities of the instruments. An objective of this work was to adapt and to apply the bases of the wideband ultraviolet radiometry to quantify the available irradiance from photo therapeutic units, establishing procedures that allow us to compare measured irradiances from different sources, using radiometers presenting different spectral responsivities. Another objective was to characterize samples of photo therapeutic units commonly used, focusing the problem of the estimation of the effective mean irradiance from photo therapeutic units, proposing a method to estimate of the effective irradiance from focused sources. The experimental results allow us to conclude that it is not only necessary to standardize the photo therapeutic radiometry, but also the method of estimation of the effective mean irradiance. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Gulin, Mauricio

    2003-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1994-01-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Wellington Gomes de

    2012-07-01

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

  20. Synthesis and evaluation of phytotoxic activity of {alpha}-Santonin derivatives; Sintese e avaliacao da atividade fitotoxica de derivados da {alpha}-Santonina

    Energy Technology Data Exchange (ETDEWEB)

    Alvarenga, Elson S.; Barbosa, Luiz C.A.; Saliba, William A.; Arantes, Francisco F.P.; Demuner, Antonio J. [Universidade Federal de Vicosa (UFV), MG (Brazil). Dept. de Quimica]. E-mail: elson@ufv.br; Silva, Antonio A. [Universidade Federal de Vicosa (UFV), MG (Brazil). Dept. de Fitotecnia

    2009-07-01

    Mixtures of {alpha}-Santonin and various solvents were irradiated by either high or low pressure mercury lamps. The photochemical reactions afforded lumisantonin (11) (76% in acetonitrile), (3 S,3a S,9{beta}S)-3,6,6-trimethyl-3,3a,4,5-tetrahydronafto[1,2-b]furan-2,7({eta}6,9{beta}{eta}) dione (12) (100% in acetonitrile), 10{alpha}-acetoxy-3-oxo-1,7{alpha}H{eta},6,11{alpha}a{eta}-guaia-4-en-6,12-oli= de (8) (26% in acetic acid), 10{alpha}-hydroxy-3-oxo-1,7{alpha}a{eta},6,11{alpha}{eta}-guaia-4-en-6,12-olid= e (10) (32%) and (E)-3-((3 S,3a S,7{alpha}S)-3-methyl-2-oxo-6-(propan-2-ylidene)hexahydrobenzofuran- 7 - (7{alpha}{eta})-ylidene)propanoic acid (9) (44%) (in water/ acetic acid 1:1, v/v). Lactone 12 was also prepared by irradiation of lumisantonin in diethyl ether. Lactones 8 and 10 were converted, respectively, into the 10 {alpha}-acetoxy-3{alpha}-hydroxy-1,7{alpha}H,6,11{alpha}H-guaia-4-en-6,12-olid= e (13) (87%) and 3a,10a-dihydroxy-1,7{alpha}H,6,11{alpha}H-guaia-4-en-6,12-olide (14) (75%) by sodium borohydride reduction. The effects of the compounds on the development of radicle of Sorghum bicolor and Cucumis sativus were evaluated. (author)

  1. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2013-11-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Gulin, Mauricio

    2003-07-01

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

  4. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2008-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Wellington Gomes de

    2012-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Cotrim, Marycel Elena Barboza

    2006-07-01

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

  8. Teoria da mente e compreensão das emoções: um estudo comparativo com alunos do ensino fundamental

    OpenAIRE

    Ribas, Deyse Aparecida

    2011-01-01

    A teoria da mente, entendimento que as crianças elaboram acerca da mente, incluindo-se emoções, intenções, desejos e crenças, permite predizer o comportamento e formular o entendimento do mundo social. A compreensão das emoções, um dos aspectos constituintes da teoria da mente, também influencia o conhecimento sociocognitivo e parece estar intimamente ligada à trajetória de desenvolvimento social e ao ajustamento escolar. Tal constatação leva a indagar sobre como se daria a compreensão das em...

  9. IMPORTÂNCIA E INTERACÇÕES DA INTENSIDADE DA DISTRIBUIÇÃO COM A PERFORMANCE: ESTUDO EXPLORATÓRIO DE ÁGUA ENGARRAFADA

    Directory of Open Access Journals (Sweden)

    Joana Cabeçadas

    2006-04-01

    Full Text Available Este estudo pretende abordar a importância da variável intensidade da distribuição como estratégia de marketing, bem como as interações com outras variáveis relevantes para as empresas. Tal análise revela-se extremamente importante, já que, para produtos para os quais não faz sentido adotar estratégias de diferenciação, as empresas devem compreender bem as implicações e determinantes da intensidade da distribuição. Procura-se avaliar a importância da competitividade da força de vendas, enquanto força interna. O estudo demonstra e justifica a relação positiva que existe entre a competitividade da força de vendas e as variáveis intensidade da distribuição e performance da força de vendas. Como o mercado em estudo é extremamente competitivo, evidencia-se a relevância da intensidade da competição. Verifica-se que um aumento dessa variável tem um impacto positivo na intensidade da distribuição e na performance da força de vendas. Na maioria dos casos confirma-se que a quota de mercado, enquanto medida de performance do ano anterior, influencia positivamente a nossa variável estratégica. Por sua vez, o aumento da intensidade da distribuição melhora a performance da força de vendas e, conseqüentemente, o desempenho da empresa.

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

    Directory of Open Access Journals (Sweden)

    Verônica Vieira da Costa

    2009-12-01

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

  11. Influencias de las impurezas en los combustibles residuales

    Directory of Open Access Journals (Sweden)

    Carlos Losada

    2002-01-01

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

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

    Directory of Open Access Journals (Sweden)

    Míriam Gomes Jordão

    2002-04-01

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

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

    Directory of Open Access Journals (Sweden)

    Fernanda Raphael Escobar Gimenes

    2010-12-01

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

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

    Directory of Open Access Journals (Sweden)

    Thelma Leite de Araujo

    1998-10-01

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

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

    Directory of Open Access Journals (Sweden)

    Antonio Vega-Gálvez

    2007-09-01

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

  16. Influência da naloxona e metisergida sobre o efeito analgésico do laser em baixa intensidade em modelo experimental de dor Influencia de la naloxona y la metisergida sobre el efecto analgésico del láser en baja intensidad en modelo experimental de dolor Influence of naloxone and methysergide on the analgesic effects of low-level laser in an experimental pain model

    Directory of Open Access Journals (Sweden)

    André Peres e Serra

    2010-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A fototerapia com laser (LPT é um método analgésico promissor, embora seu mecanismo de ação não seja totalmente conhecido. O objetivo deste estudo foi avaliar se a ação da LPT é dependente da ativação de receptores opioides ou serotoninérgicos periféricos. MÉTODO: Foram utilizados ratos Wistar machos. A dor produzida foi de caráter inflamatório, através da injeção de carragenina na pata posterior esquerda dos ratos. O laser utilizado foi o Photon Lase III em meio ativo InGaAIP (660 nm, fluência de 2,5 J.cm-2. Analisou-se a hiperalgesia mecânica utilizando filamentos de von Frey. Os animais foram separados em cinco grupos: Carragenina; Laser (LPT; Luz não coerente; LPT + Naloxona e LPT + Metisergida. RESULTADOS: A fototerapia com laser em baixa intensidade mostrou-se um método analgésico eficaz, enquanto o emprego de fonte de luz não coerente não mostrou ter efeito analgésico. O uso de naloxona bloqueou o efeito analgésico do LPT; já o uso de metisergida não afetou a analgesia do LPT. CONCLUSÕES: A LPT nos parâmetros utilizados apresentou efeito analgésico. A analgesia da LPT é mediada por receptores opioides periféricos. A LPT parece não interagir com receptores serotoninérgicos periféricos.JUSTIFICATIVA Y OBJETIVOS: La fototerapia con láser (LPT es un método analgésico promisorio, aunque su mecanismo de acción no se conozca en su totalidad. El objetivo de este estudio fue evaluar si la acción de la LPT es dependiente de la activación de receptores opioides o serotoninérgicos periféricos. MÉTODO: Se usaron ratones Wistar machos. El dolor generado fue de carácter inflamatorio, a través de la inyección de carragenina en la pata posterior izquierda de los ratones. El láser utilizado fue el GaIAsAl (660 nm, fluencia de 2,5 J.cm-2. Se analizó la hiperalgesia mecánica utilizando filamentos de von Frey. Los animales se dividieron en cinco grupos: Carragenina; Láser (LPT

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

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira Sobrinho, Mauro de

    1994-11-01

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

  18. The influence of the day of the week of hospital admission on the prognosis of stroke patients Influencia del día de la semana de admisión hospitalaria en el pronóstico de pacientes con accidente vascular cerebral O dia da semana de admissão hospitalar influenciando o prognóstico de pacientes com acidente vascular cerebral

    Directory of Open Access Journals (Sweden)

    Paulo A. Lotufo

    2013-04-01

    fines de semana por hemorragia intraparenquimatosa presentaron menor supervivencia (50%, comparados con los admitidos de Lunes hasta Viernes (22%, p log-rank = 0.03. Se encontró una razón de riesgo multivariada de un 2,49 (IC95%: 1,10-5,81; p tendencia = 0,03 de morir los fines de semana en comparación con los lunes y viernes para la hemorragia intracerebral. No hubo diferencia en la supervivencia para la muestra total de AVC ni para el AVC isquémico.O estudo avaliou a distribuição de casos incidentes de acidente vascular cerebral (AVC que procuraram hospital de 2ª a 6ª feira ou nos finais de semana no Estudo de Mortalidade e Morbidade do AVC (EMMA. O EMMA é uma coorte de pacientes com AVC em hospital comunitário da cidade de São Paulo, Brasil. Casos consecutivos de primeiro episódio de AVC internados entre abril de 2006 e dezembro de 2008 foram seguidos prospectivamente por um ano. Não houve diferença na frequência das internações por AVC isquêmico ou hemorrágico pelos dias da semana. Entretanto, a letalidade em dez dias e após um ano estava aumentada no AVC hemorrágico. Na análise da sobrevida de um ano, pacientes admitidos nos finais de semana por hemorragia intraparenquimatosa apresentaram menor sobrevida (50% quando comparados aos admitidos de 2ª a 6ª (22% (p log-rank = 0.03. Encontrou-se uma razão de risco multivariada de 2,49 (IC95%: 1,10-5,81, p tendência = 0,03 de morrer nos fins de semana em comparação ao período de 2ª a 6ª feira para hemorragia intracerebral. Não houve diferença na sobrevida para amostra total de AVC nem para AVC isquêmico.

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

    Directory of Open Access Journals (Sweden)

    Derli da Conceição Munhóz

    2004-02-01

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

  20. Hoteles y sanatorios: influencia de la tuberculosis en la arquitectura del turismo de masas

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    Eduardo Jiménez Morales

    Full Text Available Resumen Este artículo pretende constatar la influencia que ha ejercido la tuberculosis en la formalización de la arquitectura del turismo de masas. Para ello se repasa la evolución tipológica del hotel a partir de la eclosión del sanatorio antituberculoso en el contexto de la estación turística alpina de mediados del siglo XIX. Un recorrido que se realiza tendiendo puentes entre los progresos en arquitectura y los avances en terapias médicas. El objetivo es hacer evidente el proceso de hibridación que se produce entre ambas tipologías arquitectónicas. Una imbricación que se extiende hasta la Segunda Guerra Mundial pero cuya influencia aún persiste en la arquitectura del turismo masivo de sol y playa.

  1. Influencia de la adición del filler calizo sobre el fraguado del cemento

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    Menéndez, Ignacio

    1993-09-01

    Full Text Available The present paper deals about the infuence that addition of calcareous "filler" has on the set of portland cement which rates are from 0 up to 50% of filler.

    En el presente artículo se estudia la influencia que la adición de "filler" calizo ejerce sobre el fraguado del cemento portland, al que se le añaden porcentajes desde O al 50% en filler.

  2. Influencia del modelo elástico en la dinámica de estructuras articuladas

    OpenAIRE

    Muñoz, M.; López-Hernández, E.

    1997-01-01

    Se estudia la influencia en la dinámica de una estructura articulada de barras de madera, de la aproximación a las propiedades tensión-deformación del material. Se ha adoptado un método de cálculo por diferencias finitas en el dominio del tiempo, con un modelo de masas concentradas en los nodos.

  3. La danza y su influencia en la percepción de plenitud y bienestar psicoemocional.

    OpenAIRE

    Rengifo Rodríguez, Lorelcris; Carrero Planes, Virginia

    2016-01-01

    Introducción: Desde los resultados obtenidos en diversas investigaciones que han identificado la influencia del trabajo corporal sobre la inteligencia emocional y otras variables psicológicas, se derivó el interés por descubrir los efectos o beneficios de la danza sobre las habilidades emocionales u otros procesos psicosociales asociados al bienestar y plenitud. El trabajo que se presenta tiene como objetivo explorar la vivencia de personas que practican danza, de manera profes...

  4. Influência da nifedipina no bloqueio neuromuscular produzido pelo atracúrio e pelo cisatracúrio: estudo em preparações nervo frênico-diafragma de rato Influencia de la nifedipina en el bloqueo neuromuscular producido por atracurio y cisatracurio: estudio en preparación nervio frénico diafragma de ratón Influence of nifedipine on the neuromuscular block produced by atracurium and cistracurium: study in rat phrenic-diaphragmatic nerve preparation

    Directory of Open Access Journals (Sweden)

    Silmara Rodrigues de Sousa

    2006-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Os bloqueadores de canais de cálcio podem interagir com bloqueadores neuromusculares potencializando seus efeitos. Os estudos sobre essa interação mostram resultados controversos. Em alguns estudos essas drogas produziram bloqueio neuromuscular, ou contratura, ou nenhum efeito sobre as respostas musculares esqueléticas foi evidenciado. O estudo avaliou, em diafragma de rato, os efeitos da nifedipina sobre a resposta muscular e sua possível interação com os bloqueadores neuromusculares. MÉTODO: Foram utilizados 25 ratos, com peso entre 250 e 300 g sacrificados sob anestesia com pentobarbital (40 mg.kg -1 por via intraperitonial. A preparação foi montada de acordo com a técnica descrita por Bulbring. O diafragma foi mantido sob tensão, ligado a um transdutor isométrico e submetido à estimulação indireta de 0,1 Hz de freqüência. As contrações do diafragma foram registradas em fisiógrafo. Para avaliação dos efeitos das drogas na transmissão neuromuscular, estas foram adicionadas isoladamente ou associadas à preparação, nas seguintes concentrações: nifedipina (4 µg.mL-1; atracúrio (20 µg.mL-1; cisatracúrio (3 µg.mL-1. Nas preparações nervo frênico-diafragma avaliaram-se: 1 a amplitude das respostas do músculo diafragma à estimulação indireta, antes e 45 minutos após a adição da nifedipina e dos bloqueadores neuromusculares isoladamente e após a associação das drogas; 2 os efeitos da nifedipina nos potenciais de membrana (PM e potenciais de placa terminal em miniatura (PPTM. RESULTADOS: A nifedipina empregada isoladamente não alterou a amplitude das respostas musculares, mas aumentou significativamente a atividade bloqueadora neuromuscular do atracúrio e do cisatracúrio. Não alterou o potencial de membrana e ocasionou aumento inicial na freqüência dos PPTM, seguido de bloqueio. CONCLUSÕES: A nifedipina na concentração empregada potencializou o bloqueio neuromuscular

  5. Reflexões e perspectivas sobre a inclusão e exclusão da disciplina de Filosofia no currículo escolar

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    Sandra Aparecida Batista

    2017-08-01

    Full Text Available este artigo por meio de pesquisa bibliográfica de abordagem qualitativa tece algumas reflexões acerca da problemática da inclusão e exclusão da disciplina de Filosofia no currículo escolar. O ensino da filosofia no Brasil tem suas origens no período colonial, perpassando pela ditadura militar, quando a mesma foi extinta das grades curriculares, pelo período da redemocratização, onde se deu a re-inclusão da disciplina como optativa e posteriormente como obrigatória, bem como da reforma do ensino médio, via Medida Provisória (MP nº. 746/2016, que trata da exclusão da disciplina no currículo escolar.  Neste sentido, há um entendimento de que este processo se dá por influencia das relações de poder embutidas no currículo, visto que o mesmo não é um elemento, simples programa ou quadro de conteúdos, mas, sobretudo um instrumento permeado por lutas e disputas hegemônicas que reflete o interesse da ideologia dominante, bem como da importância da disciplina na formação do pensamento reflexivo, autônomo, crítico e emancipatório. Como resultado evidenciou-se que a inclusão e exclusão da disciplina ocorrem por influencia das relações de poder embutidas no currículo escolar, de modo a atender interesses ideológicos e hegemônicos, independente das contribuições sociais e humanas da disciplina.

  6. Influência da técnica anestésica nas alterações hemodinâmicas no transplante renal: estudo retrospectivo Influencia de la técnica anestésica en las alteraciones hemodinámicas en el transplante renal: estudio retrospectivo Influence of the anesthetic technique on the hemodynamic changes in renal transplantation: a retrospective study

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    Eunice Sizue Hirata

    2009-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Sucesso no transplante renal (Tx depende do tipo de doador, da duração da isquemia fria e de parâmetros hemodinâmicos na reperfusão. O objetivo desta pesquisa foi analisar a técnica anestésica, a incidência de alterações cardiovasculares e a ocorrência de diurese no período perioperatório dos Tx realizados na UNICAMP. MÉTODO: Avaliou-se retrospectivamente Tx de adultos realizados entre janeiro de 2005 e abril de 2006. Consideraram-se dados demográficos, exames laboratoriais pré-operatórios, técnicas e agentes anestésicos, hidratação, parâmetros hemodinâmicos, emprego de aminas vasoativas, presença de diurese e complicações intra-operatórias, com análise comparativa entre os subgrupos formados conforme a técnica anestésica empregada. Foram usados na análise estatística o teste t de Student (paramétricos, Mann-Whitney (não paramétricos, teste do Qui-quadrado e Exato de Fisher para comparação de proporções e análise multivariada. RESULTADOS: Estudaram-se 92 pacientes, 59 com anestesia geral (AG e 33 anestesia geral associada à peridural (AG + Peri, 42 receberam rim de doadores vivos e 50 de falecidos. Não houve diferença (p > 0,05 na maioria dos parâmetros pré-operatórios estudados, exceção feita à origem do enxerto (82% AG + Peri receberam rins de doador falecido. A alteração cardiovascular mais frequente foi hipotensão arterial (30% AG e 48% AG + Peri, p JUSTIFICATIVA Y OBJETIVOS: El éxito en el transplante renal (Tx depende del tipo de donador, de la duración de la isquemia fría y de los parámetros hemodinámicos en la reperfusión. El objetivo de esta investigación fue analizar la técnica anestésica, la incidencia de alteraciones cardiovasculares y el aparecimiento de diuresis en el período perioperatorio de los Tx realizados en la UNICAMP. MÉTODO: Se evaluó retrospectivamente Tx de adultos realizados entre enero de 2005 y abril de 2006. Se tuvieron en

  7. Deposição da calda na cultura da soja em função de diferentes pressões de trabalho e pontas de pulverização

    OpenAIRE

    Cunha, João Paulo Arantes Rodrigues da; Marques, Rodrigo Santos; Alves, Guilherme Sousa

    2016-01-01

    RESUMO A pressão de trabalho influencia as características da pulverização hidráulica de produtos fitossanitários e pode alterar a penetração da calda no dossel da cultura da soja. Este trabalho teve como objetivo avaliar o efeito da pressão na deposição de calda em plantas de soja, promovida por diferentes modelos de pontas de pulverização. O experimento foi conduzido em delineamento de blocos ao acaso, em esquema fatorial 2 x 4 + 1, sendo duas pontas de pulverização (jato cônico vazio - ATR...

  8. LUCRO, VALOR CONTABIL E DIVIDENDOS NA AVALIAcAO DO PATRIMÔNIO LIQUIDO

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    James A. Ohlson

    2009-09-01

    Full Text Available A contabilidade atribui uma importante função integrativa a demonstração das mutações do patrimônio liquido. A demonstração inclui os itens mais importantes do balanço o e da demonstração de resultado do exercício - o valor do patrimônio liquido e o lucro - e sua forma de apresentação exige que a alteração no valor do patrimônio liquido seja igual ao lucro menos os dividendos (líquidos das contribuições para aumento de capital. Referimo-nos a essa relação corno sendo a “relação de lucro limpo", pois, da forma como foi articulada, todas as alterações nos ativos e passivos que não estejam relacionadas com os dividendos devem passar pela demonstração de resultado do exercício. A teoria da contabilidade adota geralmente esse esquema sem relacioná-lo a perspectiva do usuário dos dados contábeis. Contudo, a idéia fundamental de que estoques (líquidos de valor são compatíveis com a criação c distribuição de valor levanta uma questão básica no contexto de avalia4ao do patrimônio liquido: e possível delinear urna teoria coesiva do valor de uma firma sustentada pela relação de lucro limpo, no intuito de se identificar um papel claro para cada uma das três variáveis, quais sejam: o lucro, o valor contábil do patrimônio liquido e os dividendos?

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

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    Vera Lúcia da Silva Ventura

    2014-12-01

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

  10. O capital humano e a segurança dos alimentos: um olhar humanista na prática da alimentação coletiva

    OpenAIRE

    Rafael Almeida Ferreira de Abreu

    2015-01-01

    O presente estudo teve por objetivos: 1) caracterizar o Perfil Socioeconômico dos colaboradores; 2) caracterizar o Clima Organizacional; 3) caracterizar Comprometimento Organizacional; e 4) caracterizar e mapear o comportamento organizacional e verificar suas influencias no cumprimento da Boas Práticas de Higiene e Manipulação dos Alimentos. Refere-se a um estudo de caso com enfoque participativo utilizando-se de entrevistas, por se tratar de uma pesquisa essencialmente qualitativa. Concluira...

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

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    Raquel García Bouzas

    2014-10-01

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

  12. Estudo da variação da resistência ao cisalhamento do resíduo solido urbano devido a presença de plástico mole

    OpenAIRE

    Gawlik, Francismara Martins

    2014-01-01

    A influencia do plástico mole na resistência ao cisalhamento do resíduo solido urbano (RSU) vem sendo alvo constante de estudo em virtude da sua enorme relevância nesta questão. No entanto trata-se de um tema complexo, visto que, são muitas as variáveis relacionadas ao problema, tais como, a quantidade de plástico, influencia do chorume em contanto com o plástico, inclinação do plástico em relação aos esforços normais e cisalhantes, resistência à tração do plástico, questões relacionadas à mo...

  13. Influencia del Pseudo Dionisio en Nicolás de Cusa

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    Andrés Hubert R

    2007-01-01

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

  14. El terremoto de Lisboa de 1755: su influencia en la extracción ganadera aPortugal desde la antigua provincia de Tuy (Galicia

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    María Pilar AMARÉ TAFALLA

    2009-11-01

    Full Text Available RESUMEN: Debido a los daños causados por el terremoto de Lisboa, el rey de España autorizó mediante una real orden la supresión de los derechos aduaneros con Portugal de diversos productos, entre ellos el ganado vacuno. Esta medida ocasionó en la antigua provincia de Tuy escasez de carne y de reses por lo que las autoridades provinciales se quejaron al rey solicitando que se derogara, lo que consiguieron como consecuencia de la presión ejercida por una densa trama de influencias, volviéndose a la situación anterior al terremoto.ABSTRACT: Because of the damage caused by the Lisbon earthquake of November 1st, 1755, the King of Spain approved a Royal Order to abolish the customs duties with Portugal on certain products, including cattle. This measure produced a shortage of beef in ancient Tuy province, on the southern Galician border with Portugal, causing local authorities to make a formal complaint to the monarch in order to restore the customs duties to their former situation before earthquake. They achieved this when the King repealed his Royal Order.

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

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    Julieth Andrea Ramírez-Jerez

    2015-05-01

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

  16. Influencia del tempo de la música en las emociones

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    Jonathan Azael Caballero-Meneses

    2010-01-01

    exposición de 24 estudiantes de licenciatura a treinta extractos musicales de distinto tempo. Además se evaluó la posible modulación de la relación tempo-valencia por el rasgo de personalidad extroversión/introversión. Los resultados confirmaron la influencia del tempo sobre el arousal, pero no sobre la valencia, así como una posible mediación de la dimensión de personalidad introversión-extroversión sobre la valencia.

  17. Influencia de la betarraga (Beta vulgaris var. cruenta) en el aumento de leucocitos, en ratones

    OpenAIRE

    Jony Amaro

    2014-01-01

    Introducción: La betarraga es una planta oriunda del Mediterráneo utilizada para fines alimenticios y medicinales. Contiene flavonoides. Objetivos: Determinar la influencia del consumo del extracto de Beta vulgaris var. cruenta en el incremento de leucocitos, en el ratón albino. Diseño: Estudio experimental. Lugar: Bioterio de la Institución Educativa 1182. Material biológico: Veinte ratones albinos de la cepa balb/c, machos, de peso promedio 24 g. Intervenciones: Se formó dos grupos, experim...

  18. Influencia de la humedad en el ensayo de resistencia de los ladrillos de suelo-cemento

    OpenAIRE

    Lima, José I.; Escobar Martín, Dunia

    1994-01-01

    A través de un diseño experimental adecuado se pretende mostrar la influencia de la humedad en el ensayo a compresión de los ladrillos de suelo-cemento, obteniendo las ecuaciones que muestran esta relación. Su generalización posterior permitió elaborar una matriz de correlación de las resistencias con las diferentes humedades de ensayo, de forma tal que se pueda ensayar con una humedad dada y estimar la resistencia que tendrá esa muestra para diferentes valores de humedad, con un buen nive...

  19. Influencia de la salud bucal durante el embarazo en la salud del futuro bebé

    OpenAIRE

    Díaz Valdés, Liuba; Valle Lizama, Raúl Luis

    2015-01-01

    Fundamento: El embarazo se relaciona con una mayor incidencia de caries y gingivitis. Objetivo: Profundizar en el conocimiento sobre la influencia de estas afecciones bucales en la salud del futuro bebé. Conclusiones: El embarazo genera adaptaciones en la fisiología femenina las cuales pueden repercutir en la salud bucal de la gestante. Las afecciones bucales más frecuentes son la caries dental y la gingivitis, estas si no son tratadas a tiempo pueden afectar la salud del futuro bebé. Back...

  20. Uso e influencia de la televisión en la infancia

    OpenAIRE

    Arroyo Jiménez, Isabel

    2012-01-01

    Esta investigación está contextualizada en torno al uso e influencia que ejerce la televisión en la infancia. En concreto hemos escogido un grupo de niños del tercer ciclo de Educación Primaria (10-12 años). Primeramente, tratamos de comprobar el uso que hacen de la televisión los alumnos que hemos tomado como muestra así como el tipo de programas que ven. Posteriormente, analizaremos una pequeña muestra de esos programas más seguidos por nuestros alumnos encuestados. Para ello, partire...

  1. INFLUENCIA DEL TEMPO DE LA MÚSICA EN LAS EMOCIONES

    OpenAIRE

    Jonathan Azael Caballero-Meneses; Marina Menez

    2010-01-01

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

  2. Las organizaciones contemporáneas tipo mp3 y su influencia cultural

    Directory of Open Access Journals (Sweden)

    Hugo Macías Cardona

    2011-06-01

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

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

    OpenAIRE

    Martínez Sánchez, Mª Eugenia; Universitat Autònoma de Barcelona. Departament de Comunicació Audiovisual i Publicitat

    2015-01-01

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

  4. La influencia de las guerras civiles sobre la represión estatal en posguerras

    OpenAIRE

    Herreros, Francisco

    2014-01-01

    En este artículo se analizan los determinantes de la represión estatal en posguerras. Su argumento principal es que ciertas dinámicas de las guerras civiles explican la variación en represión estatal en la posguerra. Para comprobar la influencia de las guerras civiles en la represión estatal, se emplea una base de datos que incluye a todos los países que han experimentado una guerra civil en el período 1976-2009. Los resultados muestran que una victoria rebelde en la guerra o un compromiso en...

  5. En búsqueda del ADN y las influencias en algunos sistemas presidenciales y parlamentarios

    OpenAIRE

    Jorge Carpizo

    2009-01-01

    El trabajo examina las recíprocas influencias entre las Constituciones de seis países: tres con sistema presidencial, dos con sistema parlamentario y uno con sistema semipresidencial. Los tres últimos pertenecen a Europa. Los sistemas presidenciales de América Latina se inspiraron en la Constitución Americana, tanto como en alguna europea, especialmente la española de 1812. Los enormes poderes presidenciales en América Latina llevaron a introducir en el sistema presidencial controles propios ...

  6. En búsqueda del ADN y las influencias en algunos sistemas presidenciales y parlamentarios

    Directory of Open Access Journals (Sweden)

    Jorge Carpizo

    2009-05-01

    Full Text Available El trabajo examina las recíprocas influencias entre las Constituciones de seis países: tres con sistema presidencial, dos con sistema parlamentario y uno con sistema semipresidencial. Los tres últimos pertenecen a Europa. Los sistemas presidenciales de América Latina se inspiraron en la Constitución Americana, tanto como en alguna europea, especialmente la española de 1812. Los enormes poderes presidenciales en América Latina llevaron a introducir en el sistema presidencial controles propios del sistema parlamentario

  7. En búsqueda del ADN y las influencias en algunos sistemas presidenciales y parlamentarios

    OpenAIRE

    Carpizo, Jorge

    2009-01-01

    El trabajo examina las recíprocas influencias entre las Constituciones de seis países: tres con sistema presidencial, dos con sistema parlamentario y uno con sistema semipresidencial. Los tres últimos pertenecen a Europa. Los sistemas presidenciales de América Latina se inspiraron en la Constitución Americana, tanto como en alguna europea, especialmente la española de 1812. Los enormes poderes presidenciales en América Latina llevaron a introducir en el sistema preside...

  8. INFLUENCIA DEL LIDERAZGO DOCENTE EN LA EFECTIVIDAD DE LA ESCUELA DE POSGRADO DE LA UNE

    OpenAIRE

    Huerta Camones, Luis Eustaquio; Universidad Nacional Agraria La Molina (Perú).

    2016-01-01

    Esta investigación tuvo como propósito determinar la influencia del liderazgo que los docentes ejercen en las aulas sobre la efectividad de la escuela de posgrado de la UNE. Se basó en la teoría de liderazgo transformacional. Se usaron una muestra de 126 estudiantes, instrumentos adaptados y la regresión lineal múltiple. Los resultados más importantes encontrados fueron que el liderazgo docente influye positiva y significativamente en la efectividad de la escuela de posgrado de la UNE y que e...

  9. La motivación laboral y su influencia en la empresa

    OpenAIRE

    Jiménez Cacho, Raquel

    2017-01-01

    Este proyecto se centra en un tema de gran interés como es la motivación laboral y su influencia en la empresa. Como sabemos este tema no es nuevo y se ha analizado y estudiado desde hace mucho tiempo, debido a la incidencia que tiene en el mundo laboral, económico y social. La motivación laboral lleva una trayectoria positiva en cuanto a su estudio e importancia, gracias a su estrecha relación con los problemas, soluciones, costes, beneficios y ventajas competitivas de las empresas. Para ...

  10. La influencia de la musicoterapia en ni??os con disfemia

    OpenAIRE

    P??rez Bazoco, M??nica

    2015-01-01

    En este trabajo se pretende realizar una peque??a investigaci??n sobre la influencia que tiene la musicoterapia en los ni??os que presentan disfemia. La musicoterapia es un medio de rehabilitaci??n que incide tanto desde el punto de vista fisiol??gico (como puede ser la ejercitaci??n de la voz), como desde la perspectiva emocional e intelectual, proporcionando un desarrollo afectivo y cognoscitivo. Por tanto, la din??mica planteada de modelos mel??dicos y r??tmicos parece repercutir en el des...

  11. La influencia externa en las políticas educativas de Argentina, Brasil y Chile (1990-2006)

    OpenAIRE

    Rambla, Francesc Xavier,

    2009-01-01

    El objetivo del artículo es analizar el papel que juega la influencia internacional en el diseño y aplicación de políticas educativas en el Cono Sur. Específicamente pretende explorar el proceso a través del cual las ideas, recomendaciones y metas globales modelan las políticas educativas latinoamericanas. Para ello, el artículo se centra en el programa de Educación para Todos en el Acuerdo General de Comercio de Servicios, analizando los mecanismos de influencia externa que intervienen en ca...

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

    OpenAIRE

    Pachas, José Antonio

    2004-01-01

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

  13. Estudio de la influencia del lavado y del ensimaje sobre la estabilidad de hilatura y las propiedades de los hilados.

    OpenAIRE

    Coll Tortosa, Liberto; Palet Alsina, Daniel; Cegarra Sánchez, José; Gacén Guillén, Joaquín; Naik, Arun

    1995-01-01

    En el presente trabajo se estudia la influencia de un lavado deficiente de la lana sobre la estabilidad de hilatura y las propiedades de los hilados. El motivo de este estudio es solucionar el problema de la acumulación de residuos no hilables en los órganos de la máquina de hilar, que repercuten negativamente en la hilatura y en las propiedades de los hilados. Este problema fue abordado en un trabajo anterior (julio 91) en el que se analizó la influencia de la intensidad del aclarado, sin en...

  14. Sobre los determinantes y efectos de la influencia de politica (On the Determinants and Effects of Political Influence)

    OpenAIRE

    Alberto Chong; Mark Gradstein

    2007-01-01

    En este trabajo se emplea una encuesta de gran alcance entre empresas de varios países para evaluar su influencia en las políticas oficiales. Se halló que la influencia guarda una relación con empresas más grandes propiedad del Estado que tienen un alto grado de concentración de la propiedad. Por el contrario, la tenencia foránea tiene escasa importancia. También se descubrió que la medida en que se considera que las políticas gubernamentales y la legislación entorpecen el crecimiento de las ...

  15. BRASIL BAJO INFLUENCIA NAPOLEÓNICA Y FRANCESA: LOS MENSAJEROS DE LA INDEPENDENCIA: MILITARES, LIBREROS Y PERIODISTAS

    OpenAIRE

    PUIGMAL, PATRICK

    2013-01-01

    La historiografía clásica presenta la independencia de Brasil como un evento particular, generalmente aislado del acontecer continental y sin hacer referencia a la influencia militar y política napoleónica. Este artículo tiene como propósito principal entender la emancipación brasileña en un contexto mucho más amplio y demostrar la amplia presencia e influencia napoleónica en el marco de la lucha militar y de la construcción del Estado nuevo, permitiendo así integrar a Brasil en un movimiento...

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

    Directory of Open Access Journals (Sweden)

    Juan Cabrera Cabrera

    2010-12-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2004-07-01

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

  18. Influence of additives on the stability of the phases of alumina; Influencia de aditivos na estabilidade das fases da alumina

    Energy Technology Data Exchange (ETDEWEB)

    Rosario, D.C.C.; Gouvea, D., E-mail: deisedorosario@usp.br [Universidade de Sao Paulo (USP), SP (Brazil). Departamento de Engenharia Metalurgica e de Materiais. Laboratorio de Processos Ceramicos

    2011-07-01

    Problems with the stability of gamma alumina in catalytic reactions have been solved with the inclusion of additives during the synthesis of alumina. These additives stabilize the temperature of phase transition allowing the use of metastable alumina at high temperatures, but the mechanisms of action of additives are not well defined. It is known that each family of additive or additives behaves in different ways for this stabilization. This work aimed to study the performance of MgO and ZrO{sub 2}, respectively at different concentrations in alumina synthesized via Pechini. The samples were analyzed by DSC, X-ray diffraction, measurement of specific surface area by BET analysis, and infrared analysis. The results showed an increase in transition temperature for both additives, and a different changes for specific surface area, showing that MgO and ZrO{sub 2} work on improving the stability but with distinct mechanisms. (author)

  19. Influencia de la consulta monográfica de insuficiencia cardiaca crónica y comorbilidad asociada dirigida por internistas sobre la calidad asistencial y hospitalizaciones relacionadas

    Directory of Open Access Journals (Sweden)

    José Manuel Cerqueiro González

    2012-09-01

    Full Text Available OBJETIVO: Determinar la repercusión de una consulta monográfica para pacientes con insuficiencia cardíaca crónica (ICC y comorbilidad asocia-da, dirigida por internistas y enfermería cualificada, sobre la calidad asis-tencial y los reingresos y la influencia en los ingresos de estos pacientes. Así como la influencia en los ingresos globales del hospital por IC.MATERIAL Y MÉTODOS: Estudio de cohortes retro y prospectivo de 169 pacientes con ICC, incluidos en dos consultas monográficas similares, pertenecientes a dos hospitales de diferente ámbito asistencial (comarcal y provincial. Se evalúan porcentaje de pacientes que recibe fármacos de 1º línea, la adherencia al seguimiento y se compara los ingresos por ICC realizados el año previo y posterior al seguimiento. Para conocer el impacto de estas consultas, en base a los datos de los centros, se analiza la evolución en el nº de ingresos totales y estancias medias por ICC (GRDs 127, 544 durante los años 2001-2009. Coincide el ecuador de este pe-riodo con la puesta en marcha de estas consultas.RESULTADOS: Los pacientes sometidos al seguimiento recibieron fárma-cos de 1º línea en un porcentaje elevado (97.8% para IECAS/ARA-II,y 88% para BB, con una adherencia al seguimiento muy alta (90% y con una reducción de los reingresos de hasta un 69%, con respecto al año previo. Desde los datos facilitados por ambos hospitales, se observa una disminución de la estancia hospitalaria global del servicio de Medicina interna por ICC de 3.5 días, un aumento de pacientes atendidos en Medi-cina interna y una disminución de los ingreso por ICC. CONCLUSIONES: El seguimiento por internistas y enfermería de los pacien-tes con ICC y comorbilidad, basado en una atención continuada e integral, en la información y en la disponibilidad, es un buen método no solo para disminuir reingresos hospitalarios , sino que además puede influir en la me-jora de las cifras globales de la hospitalización por

  20. INFLUENCIA DEL TEMPO DE LA MÚSICA EN LAS EMOCIONES

    Directory of Open Access Journals (Sweden)

    Jonathan Azael Caballero-Meneses

    2010-01-01

    Full Text Available Se sabe que la música puede influir en dos componentes de lasemociones: el arousal y la valencia. En particular, se ha reportadoque el tempo o rapidez de la música está directamenterelacionado con el arousal, aunque su relación con la valenciao medida de afecto no es aún clara. En este trabajo se analizóla influencia del tempo en ambos componentes mediante laexposición de 24 estudiantes de licenciatura a treinta extractosmusicales de distinto tempo. Además se evaluó la posiblemodulación de la relación tempo-valencia por el rasgo de personalidadextroversión/introversión. Los resultados confirmaronla influencia del tempo sobre el arousal, pero no sobrela valencia, así como una posible mediación de la dimensiónde personalidad introversión-extroversión sobre la valencia.

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

    Directory of Open Access Journals (Sweden)

    Reyna Isabel Hernández Pedroza

    2015-12-01

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

  2. La influencia social de los medios de comunicación en Twitter

    Directory of Open Access Journals (Sweden)

    Karines Rodríguez Díaz

    2017-06-01

    Full Text Available En este artículo se expone cómo se desarrolla la influencia social de los medios de comunicación sobre los usuarios en Twitter, durante la celebración de la VII Cumbre de la Asociación de Estados del Caribe (AEC. La investigación parte del análisis de un corpus de 1500 tuits con las etiquetas temáticas #CubaCaribe, #VIICumbreAEC, #CumbreAEC. Utilizando el análisis del discurso mediado por computador, los resultados muestran la habilidad de influencia de los medios de comunicación a través de patrones de repetición-reacción y en la construcción del consenso sobre la valoración del acontecimiento. El reporte de caso explica cómo los parlamentos mediáticos repercuten en la comunidad de usuarios en el contexto microblogging.

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

    Directory of Open Access Journals (Sweden)

    Nancy Noemi Terroni

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

  4. Evolución de la inmunología e influencia en los trasplantes de órganos

    OpenAIRE

    Carretero Vegas, Luz María

    2012-01-01

    Se profundiza en el conocimiento sobre los mecanismos del sistema inmunológico y la evolución histórica de los mismos para conocer la influencia de la inmunología en los trasplantes y las medidas preventivas más adecuadas para evitar las complicaciones

  5. Influencia de la poda en el desarrollo de masas de Pinus radiata D. Don y Pinus pinaster Aiton en Asturias

    OpenAIRE

    Hevia Cabal, Andrea

    2013-01-01

    Esta tesis evaluó la influencia de diferentes intensidades de poda sobre el crecimiento, desarrollo y persistencia de masas regulares jóvenes de Pinus radiata D. Don y Pinus pinaster Aiton en Asturias, dentro de una selvicultura sostenible enfocada a la producción de madera de calidad.

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

    Energy Technology Data Exchange (ETDEWEB)

    Monteiro, Iara Arraes

    1999-02-15

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

  7. Evaluation of the contribution of contamination of radiotherapy room surfaces in the measure of exposure rate of radioiodine therapy patients; Avaliacao da contribuicao da contaminacao de superficies do quarto terapeutico na medida da taxa de exposicao de pacientes de radioiodoterapia

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Rafael Ferreira

    2015-07-01

    The contamination of radiotherapy room surfaces is significant and the measures of patient exposure rate are held on the fourth dependencies, relevant questions are raised: the background radiation of the room stay high due to surface contamination, may interfere with the rate of patient exposure at the time of its release? The monitoring site is important to determine whether the patient will be released? The value of the deal activity and the clinical condition of the patient may increase the contamination, influencing the monitoring results? This paper aims to conduct a quantitative analysis of surface contamination of the contribution of therapeutic room at the time is monitored exposure rate from inpatient. Measurements were made regarding the hospitalization of 32 patients with different doses administered activity, age and of both genders. The measurements were performed in the therapeutic rooms at the hospital Brotherhood Santa Casa de Misericordia de Sao Paulo. Exposure rate measurements were performed at the center of the room at 1 meter of the patient on the day of its release. After his release and prior to decontamination, measurements were performed at predetermined landmarks within the therapeutic room. The results revealed that on average background radiation, high due to surface contamination contributes only 2% of the patient dose rate. It can be considered that even with influence of contamination of surfaces, this is insignificant to determine if the patient may or may not be released. This study suggests that the site in which monitoring occurs exposure rate of the patient should not be decisive for liberation thereof. (author)

  8. As raízes da arquitectura japonesa na obra de Tadao Ando : Museu de Arte Moderna de Fort Worth e Templo da Água

    OpenAIRE

    Martins, Pedro Miguel Sobral, 1986-

    2017-01-01

    Dissertação de mestrado integrado em Arquitectura, Universidade Lusíada de Lisboa, 2013 Exame público realizado em 26 de Fevereiro de 2014 Esta dissertação tem por base a análise dos conceitos da estética e arquitectura tradicionais do Japão, à luz da sua influência e contemporaneidade no momento presente. Foi analisada, a integração e contributo das correntes religiosas que maior influencia tiveram na definição dos conceitos de belo, bem como, o diálogo destes princípios estéticos c...

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2012-07-01

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

  10. Evaluation of pollution effects in transmission lines located in industrial areas; Avaliacao dos efeitos da poluicao em linhas de transmissao situadas em regiao industrial

    Energy Technology Data Exchange (ETDEWEB)

    Kanashiro, Arnaldo G.; Burani, Geraldo F. [Sao Paulo Univ., SP (Brazil). Inst. de Eletrotecnica e Energia; Nascimento, Iara R. [Eletricidade de Sao Paulo SA, SP (Brazil)

    1995-12-31

    This work aims to determinate a correlation between the pollution levels and electric power transmission lines maintenance procedures in order to establish the necessary procedures for specific pollution levels. The methodology is presented. The results obtained in field tests and bench scale tests are presented and discussed. The so called pollution equivalent is determined for each site of the transmission line studied and maintenance procedures are established 6 refs., 5 figs., 4 tabs.

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

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Cherley Borba Vieira de

    2010-07-01

    The cancer covers a heterogeneous group of more than 100 diseases with different etiology and prognosis. Radiotherapy is one of the most commonly used treatment modalities, aiming at the destruction of cancer cells, using ionizing radiation. One of the limiting factors of radiotherapy is that radiation promotes the death of tumor cells in addition to injure healthy tissue neighboring the tumor, and may cause their death. Irradiation of the skin, accidental or for therapeutic purposes can trigger many injuries culminating in fibrosis, which implies functional alteration of the body. The evaluation of morphological effects associated with skin irradiation becomes essential to develop more effective radiation strategies and decreased morbidity; and in case of accidents, proper handling of the victim.Evaluate radio-induced dermal changes using a Wistar rats model irradiated with 10, 40 and 60Gy. Male Wistar rats, aged approximately three months, were pre-anesthetized with midazolam and xylazine and anesthetized with sodium pentobarbital, shaved in the back, immobilized on polystyrene support in the prone position and irradiated with doses of 10, 40 and 60 Gy, with 4MeV nominal energy electron beams. The skin was irradiated in a 3cm{sup 2} field, and used 0.5cm of tissue equivalent material, to obtain a homogeneous dose distribution. After irradiation, the animals remained on constant evaluation, and the lesions were recorded photographically. The animals were divided into groups and were killed on the irradiation day, 5, 10, 15, 25 and 100 days after irradiation. The skin was fixed in 10% formaldehyde; the samples were embedded in paraffin and cut. The sections were stained with hematoxylin-eosin, picrosirius red and immuno stained with antibody anti-TGF beta1. Another part of the tissue was fixed in 2.5% glutaraldehyde and processed for scanning electron microscopy. It was observed macroscopically the appearance of skin lesions similar to burns on the entire irradiated area. The optical microscope verified the early development of lesions in the 5 days group. After 10 days of irradiation it was already possible to see evidences of epidermal healing under the crust formed by the lesion. At 15 days after irradiation the tissue beneath the lesion had reconstructed epidermis. It was also observed the characteristics of tissue healing. It was also seen a significant polymorphonuclear cells infiltration. After 25 days at the higher doses the lesions remained, which did not occur at the lower dose, where the irradiated area of the animals were already completely healed. After 100 days of irradiation at 40Gy dose the wound was healed with the emergence of a well defined healed tissue. At the 60Gy dose, the lesion persisted in some animals, and in those that healing occurred the epidermis was a hypertrophied (acanthosis). It was visualized a tissue with their morphological aspect completely mis characterized, where it's possible to view a necrotic tissue. The results of the scanning electron microscopy analysis corroborate with the in optical microscopy findings, where it's possible to visualize the distortion of collagen fibers at the higher dosages. The results indicate that the used doses induced an important skin inflammatory process, activating the immune system. This fact leads to an increase in the expression of TGF beta1, one of the responsible for the increased production of extracellular matrix (ECM) by various cell types, mainly fibroblasts in injured tissues. Besides the increased expression of ECM, the TGF beta1 also promotes the inhibition of the degradation processes of the same. The intense expression of cytokines in irradiated skin can trigger the fibrosis process; consequently, affect the homeostasis of this organ due to the accumulation of ECM. (author)

  12. Evaluation of dosimetric effects caused by the table top of therapy; Avaliacao dos efeitos dosimetricos causados pelo tampo da mesa de tratamento

    Energy Technology Data Exchange (ETDEWEB)

    Camargo, Andre Vinicius de; Alvares, Bruno; Fioravante, Gustavo Donisete; Silva, Diego da Cunha Silveira Alves da; Giglioli, Milena; Batista, Felipe Placido; Silva, Lais Bueno da; Radicchi, Lucas Augusto [Hospital de Cancer de Barretos, SP (Brazil)

    2016-07-01

    The attenuation and bolus effect for two tables top from different manufacturers were investigated for 6MV photons. The bolus effect of couch was compared with 0,5cm bolus (water equivalent). Maximum attenuation found in Exact Couch table was 6,9% and the minimum was 0,63%. The rail of Exact Couch, for beam in 180 deg, was observed attenuation of 13,61%. The same way that for attenuation, the surface dose was different for each region of couch Exact Couch and for different components of iBeam evo. The percentage of the dose in the depth of 1,8 mm was greater for table top of Exact Couch (66,2%). The extender of table iBeam evo offered increase dose of 38,3% and it table top of 51,9% in the same depth. The bolus increased surface dose in 61,1%. The results of this study showed that table tops when in contact with surface of the patient may significantly increase surface dose and beam attenuation. (author)

  13. Evaluation of quality of tomographs of Rio de Janeiro state, Brazil; Avaliacao da qualidade dos tomografos do estado do Rio de Janeiro

    Energy Technology Data Exchange (ETDEWEB)

    Travassos, P.C.B.; Belem, V.R.; Magalhaes, L.A.; Almeida, C.E.A. de, E-mail: luisalexandregm@hotmail.com [Instituto de Radioprotecao e Dosimetria, (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil). Lab. de Ciencias Radiologicas

    2014-07-01

    Computerized tomographs used in 56 institutions in the state of Rio de Janeiro were evaluated. Criteria of image quality and dosimetry were submitted. The results showed that some not performed optimize their protocols examinations or perform wrongly, which results in an increase in the dose received by patients, and an image in compromised quality. (author)

  14. Assessment of effect of chemical treatment to carnauba's fibers straw; Avaliacao do efeito de tratamento quimico as fibras da palha de carnauba

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, T.M.P. de; Carvalho, L.F.M.; Oliveira, R.R. de; Sousa, F.M.S. de; Sousa, R.C. de; Marques, J.R., E-mail: thaismarjore.pc@gmail.com [Instituto Federal de Educacao, Ciencia e Tecnologia do Piaui (IFPI), Teresina, PI (Brazil)

    2016-07-01

    The use of natural fibers in composite materials has been highlighted in the scientific field. However, its application in polymer matrices usually requires surface modifications. The objective of this work was to treat carnauba's straw fibers with NaOH 1 % and NaOH 5% solutions and measure the water absorption. We used the X-ray diffraction (XRD configuration “Bragg- Brentano) for verification of the crystalline phases and Fourier Transform Infrared Spectroscopy (FTIR) to identify functional groups. The alkali treatment allowed the solubilization of the hemicellulose and lignin without causing changes to cellulose, as indicated by FTIR spectrophotometry and by the increase in crystallinity content. The samples showed the typical peaks of constituents of the fiber. The natural fiber showed an average water absorption of 256 %; fiber treated with NaOH 1%, 315 %; and treated with NaOH 5%, 405 %. Therefore, it is evident improvement in hydrophilicity, fundamental aspect in the interaction fiber / matrix. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Sakiyama, Mauro Yoshimitsu

    1996-12-31

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

  16. Magnetic resonance imaging pre- and postoperative evaluation of tetralogy of Fallot; Avaliacao pre e pos-operatoria da tetralogia de Fallot por ressonancia magnetica

    Energy Technology Data Exchange (ETDEWEB)

    Bernardes, Renata Junqueira Moll; Simoes, Luiz Carlos [Instituto Nacional de Cardiologia (INC), Rio de Janeiro, RJ (Brazil). Servico de Cardiologia da Crianca e do Adolescente; Marchiori, Edson [Universidade Federal Fluminense, Niteroi, RJ (Brazil). Faculdade de Medicina. Dept. de Radiologia]. E-mail: edmarchiori@bol.com.br; Bernardes, Paulo Manuel de Barros; Gonzaga, Maria Beatriz Albano Monzo [Rede Labs/D' Or, Rio de Janeiro, RJ (Brazil)

    2004-08-01

    The purpose of this study was to assess the usefulness of magnetic resonance imaging (MRI) in the pre- and postoperative evaluation of patients with tetralogy of Fallot. Twenty patients aged 1 to 29 years were prospectively evaluated with black-blood and contrast-enhanced angiographic techniques, 11 with the classic form of tetralogy of Fallot and 9 with tetralogy of Fallot and pulmonary atresia. MRI studies provided adequate visualization of the aorta that was classified as dilated or not dilated, and definition of its position in all cases. The use of contrast-enhanced MR angiographic techniques provided excellent imaging of the main right and left pulmonary arteries. The results suggest that MRI, including contrast-enhanced angiography techniques, is a useful tool in the evaluation of patients with tetralogy of Fallot before and after cardiac surgery since it provides important anatomical information that is not always obtained with echocardiography. MRI can be considered an alternative to cardiac catheterization, particularly in the evaluation of the pulmonary vascular anatomy. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Sakiyama, Mauro Yoshimitsu

    1995-12-31

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

  20. Dynamic system for the evaluation of CIM monitoring and control techniques; Sistema dinamico para avaliacao de tecnicas de monitoracao e controle da CIM

    Energy Technology Data Exchange (ETDEWEB)

    Penna, Monica de Oliveira [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES). Biotecnologia e Ecossistemas]. E-mail: mpena@cenpes.petrobras.com.br; Baptista, Walmar; Brito, Rosane Fernandes de [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES). Tecnologia de Materiais, Equipamentos e Corrosao]. E-mails: walmar@cenpes.petrobras.com.br; rosanef@cenpes.petrobras.com.br; Silva, Edilson Domingos da; Nascimento, Juliana Rangel do [Fundacao Gorceix, Ouro Preto, MG (Brazil)]. E-mails: edilson@cenpes.petrobras.com.br; julianarn@cenpes.petrobras.com.br; Coutinho, Claudia M.L.M. [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Inst. de Biologia. Dept. de Biologia Celular e Molecular

    2002-03-01

    In general, the two main problems associated to the water injection system for secondary petroleum recovery are the corrosion control and the decrease in solid injection in the reservoir. Corrosion problems in injection water systems may have abiotic as well as biotic causes, and the occurrence of reservoir plugs can result from the injection of particles (suspended solids as well as corrosion products), bacteria and fouling formation. Due to the need to implement a methodology for the evaluation of abiotic and biotic corrosive processes, monitoring techniques and MIC control in a dynamic system, an apparatus was built that simulates the characteristics of a water injection system. The apparatus allows monitoring and control of the parameters that, when varied, may influence the performance of the quality of the injected water. The dynamic system was designed to simulate as precisely as possible the conditions that allow the SRB and heterotrophic bacteria to create fouling in a water injection system. This article discusses the dynamic system, analytical methods and some preliminary results. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-07-01

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

  2. Assessment pozzolanicity waste red ceramics produced in Valley Assu / RN; Avaliacao da atividade pozolanica dos residuos de ceramica vermelha produzidos no Vale do Assu / RN

    Energy Technology Data Exchange (ETDEWEB)

    Palhares, Rodolfo de Azevedo; Pereira, Arthur Ruan da Silva; Cabral, Kleber Cavalcanti; Nobrega, Andreza Kelly Costa, E-mail: rodolfo.palhares@hotmail.com, E-mail: arthurruan_rn@hotmail.com, E-mail: kleber.cabral@ufersa.edu.br, E-mail: akcn123@hotmail.com [Universidade Federal Rural do Semi-Arido (UFERSA), Mossoro, RN (Brazil). Departamento de Ciencias Exatas

    2016-07-01

    It is known that both the cement industry as a ceramist contribute much to the generation of environmental impacts. Be the Co2 in the atmosphere, as well as the generation of excessive waste, reaching 20%. The objective of this study is to analyze the potential pozollanic of waste from the red ceramic industries Valley Assu / RN, in order that this material can be incorporated as alternative raw material in the manufacture of ecological and similar brick, replacing partially in its composition Portland cement. Thus contributing to reducing the environmental impact produced by both the ceramics industry, such as cement. To evaluate the efficiency of pozollanic material, it was made sample preparation and then the physico-chemical characterization. After performing tests, it was noticed that the material has the minimum requirements established in standard to be considered as pozollanic material. (author)

  3. 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.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1999-08-01

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

  5. Evaluation of occupational exposure during the exploration and physical processing of monazite; Avaliacao das exposicoes ocupacionais durante as etapas de exploracao e beneficiamento fisico da monazita

    Energy Technology Data Exchange (ETDEWEB)

    Farias, Joao Torres de

    2006-07-01

    In Brazil the most important concentrations of monazite sands occur in the beaches and sandbanks that extend throughout the coast, from the State of Rio Grande do Norte down to the State of Rio Grande do Sul, Brazil. Nowadays, the most important Brazilian monazite concentrations - considered as being the fourth worldwide reservoir of rare-earth elements - are located at the north seacoast of the State of Rio de Janeiro, near Buena town. At this location the Brazilian Nuclear Industries - INB - manages an industrial complex for prospecting, mining and physical separation and concentration of monazite sands. Among the elements present at the monazite sands there are the radioelements thorium and uranium, which make the monazite sand a radioactive mineral. Monazite is constituted basically of 62% in TR{sub 2}0{sub 3} (rare-earth oxides), 5,5% of thorium in Th0{sub 2} (thorium oxide) and 0,25% of uranium in U{sub 3}0{sub 8} (uranium oxide). The general objective of the present work was to estimate the occupational doses at the industrial complex for prospecting, mining and physical separation and concentration of monazite sands located at Buena, at the north of the State of Rio de Janeiro. The occupational exposures occur mainly through the inhalation of airbone dust particles of mineraIs containing thorium and uranium, during the prospection and physical separation and concentration of monazite. To evaluate the impact of the occupational exposures during the physical separation and concentration of monazite, it was necessary to evaluate the effective equivalent doses due to thorium contamination of the air and the exposures due to the daughter radionuclides from the natural series of uranium and thorium. The results obtained at the present work showed that, although occupational doses are within the annual dose limits established by the Brazilian regulatory authority - CNEN - in some of the working places within the industrial complex the concentrations of radionuclides in air are above the maximum recommended levels. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2012-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2008-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2012-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2017-07-15

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2017-02-15

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Correa, Valeria Rita

    2010-07-01

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

  13. Assessment of natural radioactivity in wall paints of commercial use in Brazil; Avaliacao da radioatividade natural em tintas de uso comercial no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Fonseca, Leandro Milhomens da

    2016-11-01

    Natural radioactivity in soils, rocks and construction materials, due to {sup 40}K and the natural series of {sup 232}Th and {sup 2}'3{sup 8}U, is the main contribution to external exposure in mankind. In this work, activity concentrations of {sup 226}Ra ({sup 238}U series), {sup 232}Th and {sup 4}'0K were determined for 50 white latex wall paints samples, commercialized in Brazil, namely 15 Economic quality samples, 15 Standard quality samples and 20 Premium quality samples and for a single titanium dioxide sample. The samples were tightly sealed and stored for a minimum period of 30 days, to reach the radioactive secular equilibrium from {sup 238}U and {sup 232}Th series, then measured by high resolution gamma ray spectrometry. The activity concentration was determined using the weighted average concentrations of {sup 214}Pb and {sup 214}Bi for {sup 226}Ra and {sup 228}Ac, {sup 212}Pb and {sup 212}Bi for {sup 232}Th. The {sup 4}'0K activity concentration was determined by its single transition of 1460.8 keV. Self attenuation correction factors of the samples whose densities are higher than 1.0 g.cm{sup -3}, were determined and used to make the necessary corrections. The radiological indices radium equivalent activity (Ra{sub eq}), activity concentration index (I{sub γ}), internal exposure risk index (H{sub in}) and external exposure risk index (H{sub ex}) and also the absorbed dose rate (D) and annual effective dose (D{sub ef}) were calculated from the activity concentrations of {sup 226}Ra, {sup 232}Th and {sup 40}K. The activity concentration values for {sup 226}Ra ranged from under the minimum detectable activity to 38.7 Bq.kg{sup -1}, for {sup 232}Th from under the minimum detectable activity to 101.2 Bq.kg{sup -1} and for {sup 40}K from under the minimum detectable activity to 256 Bq.kg{sup -1}. Ra{sub eq} ranged from 1.41 Bq.kg{sup -1} to 203 Bq.kg{sup -1}, I{sub γ} ranged from 0.0047 to 0.720, H{sub in} from 0.0076 to 0.653 and H{sub ex} from 0.0038 to 0.549. The absorbed dose rate ranged from 0.170 nGy.h{sup -1} and 21.3 nGy.h{sup -1} and the annual effective dose ranged from 0.83 μSv and 104.2 μSv. The results show that the activity concentrations of the wall paints studied in this work are below the recommended limits by Hassan et al. for Ra{sub eq} (370 Bq.kg{sup -1}), by European Commission for I{sub γ} (limit of 2 for superficial materials) and by the Organisation for Economic Co-operation and Development for H{sub in} and H{sub ex} (both with limit of 1), for all the 50 samples, assuring the safety of these wall paints with respect to radiological protection. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2006-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Maio, Mireia Florencio

    2009-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-07-01

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

  17. Sintering evaluation of spinel MA nanostructured obtained via synthesis of combustion in solution; Avaliacao da sinterizacao de espinelio MA nanoestruturado obtido via combustao em solucao

    Energy Technology Data Exchange (ETDEWEB)

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

    2016-07-01

    Specimens were shaped from powders of spinel MA (MgAl2O4) obtained via synthesis combustion in solution (SCS) from the trio chemical precursor aluminum nitrate, magnesium nitrate and sucrose in water, and then sintered at different temperatures between 1350 and 1650 ° C. Were evaluated the physical properties (density, porosity, water absorption and linear shrinkage), mechanical (flexural 4 points), and the microstructures (SEM) as a function of sintering temperature. The densification increased with growing the value of the sintering temperature, wherein the temperature to 1650 ° C had the highest flexural strength and higher elastic modulus: 51.33 (± 6.83) and 26.16 MPa (± 5.06) GPa respectively. The study confirmed the microstructure of the densification of the particles, confirming the purity and nature of nanometric powders obtained via the SCS. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1985-12-31

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

  19. Evaluation of the efficiency of injection of polyacrylamide in different reservoir-rock samples; Avaliacao da eficiencia de injecao de poliacrilamida em diferentes amostras de rocha-reservatorio

    Energy Technology Data Exchange (ETDEWEB)

    Marcelino, Cleuton P.; Valentim, Adriano C.M.; Medeiros, Ana Catarina R. de; Girao, Joaquim H.S.; Barcia, Rosangela B. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2004-07-01

    Water soluble polymers have been used extensively in the petroleum recovery, due to their ability in increasing the viscosity of the injection water and to reduce water/oil mobility ratio and the water relative permeability in the reservoir. This reduction acts favorably as a secondary effect, and it reestablishes part of the pressure in the reservoir after the flow of the polymer, causing a correction of the injection profile in the wells through the restructuring of the resident fluids in the porous media. Nevertheless, some parameters influence the improve of this mechanism, such as petrophysics properties, chemical composition of the rock, adsorption, resistance factor and the residual resistance factor. Many paper in the area of polymers applied to the enhanced petroleum recovery indicate a high efficiency in the injection of different partially hydrolysed polyacrylamides, in different concentrations, or even in different injection conditions, as: temperature, flow, among others. In this work it was evaluated the behavior and efficiency of partially hydrolysed polyacrylamide flooding on outcrop cores from Botucatu, Rio Bonito, Clashach and Assu, using core flow tests and computer simulations. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

  1. Evaluation of bioactivity in vitro of endodontic calcium aluminate cement; Avaliacao da bioatividade in vitro de cimento endodontico a base de aluminato de calcio

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-07-01

    Bioactivity is referred to as the capacity of a material to develop a stable bond with living tissue via the deposition of hydroxyapatite. Materials which exhibit this property can be used to repair diseased or damaged bone tissue and can be designed to remain in situ indefinitely. An indication of bioactivity can be obtained by the formation of a hydroxyapatite layer on the surface of a substrate in simulated body fluids (SBF) in vitro. Therefore, set samples of calcium aluminate endodontic cement were maintained in contact with SBF solutions (Kokubo and Rigo) and their surfaces were later evaluated by means of SEM, EDX and DRX. Measurements of pH and ionic conductivity were also carried out for SBF solutions in contact with set samples of endodontic cement. The ideal conditions of precipitation were obtained in SBF Rigo been observed a surface layer with spherical morphology characteristic of stoichiometric hydroxyapatite.(author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Sapienza, Marcelo Tatit

    1996-07-01

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

  3. Evaluation of maximum absorbed dose for accompanying patients in nuclear medicine establishments; Avaliacao da dose maxima absorvida por acompanhantes de pacientes em servicos de medicina nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Cabral, Geovanna; Amaral, Ademir; Hazin, Clivis A. [Pernambuco Univ., Recife, PE (Brazil). Dept. de Energia Nuclear; Lima, Ricardo A.; Nogueira, Maria S. [Centro Regional de Ciencias Nucleares (CRCN), Recife, PE (Brazil); Lopes, Ferdinand [Centro de Medicina Nuclear de Pernambuco (CEMUPE), Recife, PE (Brazil); Guimaraes, Maria Ines C.C. [Sao Paulo Univ., SP (Brazil). Centro de Medicina Nuclear

    2001-07-01

    In nuclear medicine, radioisotopes are bound to various pharmaceuticals for use in diagnostic and therapeutic applications. These unsealed sources are administered in various forms to patients, who remain radioactive for hours or days, and represent a source of potential radiation exposure for others. Thus, in nuclear medicine departments, radiation protection of workers and members of the public (especially persons accompanying patients) must consider this exposure. In this study, thermoluminescent dosimeters were given to various persons who were accompanying patients in two nuclear medicine departments in Recife, Pernambuco State, Brazil. Exposure results are given, and issues regarding exposure conditions and times for members of the public in these departments are discussed. (author)

  4. Powder addition assessment of manganese residue ceramic matrix coating; Avaliacao da adicao do po de residuo de manganes em matriz ceramica para revestimento

    Energy Technology Data Exchange (ETDEWEB)

    Conceicao, A.C.R. da; Santos, O.C.; Leao, M.A., E-mail: arangel-ma@hotmail.com [Instituto Federal de Educacao, Ciencia e Tecnologia da Bahia (IFBA), BA (Brazil)

    2016-07-01

    The use of recycled materials in the composition of new products follows the production's worldwide trending, meeting new technological requirements and environmental concerns. This work aims to utilize the residue of manganese dust on ceramic mass for the production of ceramic coating. The raw materials were characterized by both x-ray fluorescence and diffraction. The powder residue added to clay in the percentage of 0%, 5%, 10% and 15% (measured in weight) was compressed by a uniaxial pressing of 30MPa and the sintering temperatures were 900°, 1000° and 1100°. The samples were analysed in relation to flexural strength, bulk density, water absorption and linear shrinkage. The microstructural variation was also analysed by x-ray diffraction and electron microscopy. The results showed that there is a viability for the production of porcelain ceramic coating (A3 and A4 formulations) and stoneware (A2 formulation) according to the specification of technical standards. author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2004-08-01

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

  6. Evaluation of poly(vinylpyrrolidone) and collagen by Low Field Nuclear Magnetic Resonance Spectroscopy; Avaliacao da polivinilpirrolidona e do colageno por ressonancia magnetica nuclear de baixo campo

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Paula de M.; Tavares, Maria I.B. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Macromoleculas Professora Eloisa Mano]. E-mail: pmcosta@ima.ufrj.br

    2005-07-01

    Blends of natural and synthetic polymers represent a new class of materials with better mechanical properties and biocompatibility than those of the single components. Collagen and poly(vinylpyrrolidone) are well known for their important biological properties. The blending of collagen with poly(vinylpyrrolidone) makes it possible to obtain new materials in which strong interactions between the synthetic and biological components occur. Do to the excellent biocompatibility of these polymers, this blend has been much studied intending biomedical applications. And a one technique that can provide important information on molecular mobility, compatibility and even evaluate the interactions that can occur with these polymers is the Low Field Nuclear Magnetic Resonance Spectroscopy. Thus, the purpose of this work is to evaluate collagen and poly(vinylpyrrolidone) by Low Field Nuclear Magnetic Resonance Spectroscopy. From the values of relaxation times obtained, we can conclude that these materials have different interactions, and different mobility domains, confirming the heterogeneity and complexity of these materials. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Goncalves, Cinthia Graciele

    2008-07-01

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

  8. Evaluation of absorbed radiation dose in mammography using Monte Carlo simulation; Avaliacao da dose absorvida em mamografia usando simulacao Monte Carlo

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, Bruno L.; Tomal, Alessandra [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Instituto de Fisica Gleb Wataghin

    2016-07-01

    Mammography is the main tool for breast cancer diagnosis, and it is based on the use of X-rays to obtain images. However, the glandular tissue present within the breast is highly sensitive to ionizing radiation, and therefore requires strict quality control in order to minimize the absorbed dose. The quantification of the absorbed dose in the breast tissue can be done by using Monte Carlo simulation, which allows a detailed study of the deposition of energy in different regions of the breast. Besides, the results obtained from the simulation can be associated with experimental data and provide values of dose interest, such as the dose deposited in glandular tissue. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2008-07-01

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

  10. Evaluation of homogeneity and dose conformity in IMRT planning in prostate radiotherapy; Avaliacao da homogeneidade e conformidade de dose em planejamentos de IMRT de prostata em radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Lopes, Juliane S.; Leidens, Matheus; Estacio, Daniela R., E-mail: juliane.lopes@pucrs.br [Hospital Sao Lucas (PUC-RS), Porto Alegre, RS (Brazil). Servico de Radioterapia; Razera, Ricardo A.Z.; Streck, Elaine E.; Silva, Ana M.M. da [Pontificia Universidade Catolica do Rio Grande do Sul (PUC-RS), Porto Alegre, RS (Brazil). Faculdade de Fisica

    2015-12-15

    The goal of this study was to evaluate the dose distribution homogeneity and conformity of radiation therapy plans of prostate cancer using IMRT. Data from 34 treatment plans of Hospital Sao Lucas of PUCRS, where those plans were executed, were retrospectively analyzed. All of them were done with 6MV X-rays from a linear accelerator CLINAC IX, and the prescription doses varied between 60 and 74 Gy. Analyses showing the homogeneity and conformity indices for the dose distribution of those plans were made. During these analyses, some comparisons with the traditional radiation therapy planning technic, the 3D-CRT, were discussed. The results showed that there is no correlation between the prescribed dose and the homogeneity and conformity indices, indicating that IMRT works very well even for higher doses. Furthermore, a comparison between the results obtained and the recommendations of ICRU 83 was carried out. It has also been observed that the indices were really close to the ideal values. 82.4% of the cases showed a difference below 5% of the ideal value for the index of conformity, and 88.2% showed a difference below 10% for the homogeneity index. Concluding, it is possible to confirm the quality of the analyzed radiation therapy plans of prostate cancer using IMRT. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

  13. 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)

  14. Evaluation of the optical quality of compound parabolic concentrator solar collectors; Avaliacao da qualidade otica de coletores solares concentradores parabolicos compostos

    Energy Technology Data Exchange (ETDEWEB)

    Beyer, P.O.; Krenzinger, A. [Rio Grande do Sul Univ., Porto Alegre, RS (Brazil). Programa de Pos-graduacao em Engenharia Mecanica

    1990-12-31

    This work presents a simulation of solar compound parabolic concentrators using the ray tracing technique. The program can be used as a computer aided design and quality control applications for parabolic mirrors. (author). 4 refs., 8 figs.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2005-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-08-15

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

  17. 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)

  18. Methodology for probability of failure assessment of offshore pipelines; Metodologia qualitativa de avaliacao da probabilidade de falha de dutos rigidos submarinos estaticos

    Energy Technology Data Exchange (ETDEWEB)

    Pezzi Filho, Mario [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2005-07-01

    In this study it is presented a methodology for assessing the likelihood of failure for every failure mechanism defined for carbon steel static offshore pipelines. This methodology is aimed to comply with the Integrity Management policy established by the Company. Decision trees are used for the development of the methodology and the evaluation of the extent and the significance of these failure mechanisms. Decision trees enable also the visualization of the logical structure of algorithms which eventually will be used in risk assessment software. The benefits of the proposed methodology are presented and it is recommended that it be tested on static offshore pipelines installed in different assets for validation. (author)

  19. Evaluation of absorbed radiation dose rate in a didactic X-ray equipment; Avaliacao da taxa de dose absorvida em um equipamento de raios-X didatico

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Phelipe Amaral Ferreira; Perini, Ana Paula; Neves, Lucio Pereira, E-mail: lucio.neves@ufu.br [Universidade Federal de Uberlandia (UFU), MG (Brazil). Instituto de Fisica

    2016-07-01

    This work was performed in order to create a new didactic experiment in the X-ray apparatus of PHYWE, where the saturation current was obtained through a free air ionization chamber. The values of saturation currents were obtained in two ways. Initially, the anodic DDP was kept constant and the anodic current was varied. In the second way, the anodic current was kept constant while the anodic DDP was varied. Therefore, we were able to evaluate the dependence of the absolved dose rate in relation to the DDP and the tube current. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

  2. Method for evaluating the applicability and application rate wastes in soil; Metodo para avaliacao da aplicabilidade e taxa de aplicacao de residuos em solo

    Energy Technology Data Exchange (ETDEWEB)

    Linhares, Monica Moreira [Partime (Brazil); Seabra, Paulo Negrais [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas

    1991-01-01

    Land treatment of refinery solid wastes has been practiced in the last few years by some PETROBRAS refineries. The biodegradation process is dynamic and complex, and incorrect monitoring may destroy the potential of the soil. Due to great differences both in terms of soils and of residues, each case must be monitored individually. We therefore developed a monitoring method for land farming systems based on the impact of the waste on indigenous soil microbial populations. The method is extremely simple, requiring only a gas chromatograph to evaluate the CO{sub 2} evolution, and can detect possible causes for low efficiency biodegradation processes. Conditions should then be altered, to ensure adequate functioning of the system.The method also allows for determination of the applicability of candidate wastes and of acceptable waste application rates in soil. (author) 2 refs., 7 figs.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2013-11-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2000-07-01

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

  7. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

  9. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2008-07-01

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

  11. Evaluation of biodegradation of bionanocomposites of PHB/PP-g-MA/vermiculite; Avaliacao da biodegradacao de bionanocompositos de PHB/PP-g-MA/vermiculita

    Energy Technology Data Exchange (ETDEWEB)

    Mesquita, P.J.P. de; Alves, T.S.; Barbosa, R., E-mail: tsaeng3@yahoo.com.br [Universidade Federal do Piaui (UFPI), Teresina, PI (Brazil). Programa de Pos-Graduacao em Ciencia dos Materiais; Andrade, D. de L.A.C.S. [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Programa de Pos- Graduacao em Ciencia e Engenharia de Materiais

    2014-07-01

    In this work, we evaluated the process of biodegradation of PHB bionanocomposites/PP-g-MA/clay. Films were prepared with compositions of 5% PP-g-MA and 3% clay (BIO5); and 2.5% PP-g-MA and 3% clay (BIO2.5). The biodegradation test was conducted according to ASTM G 160-03 for a period of 86 days. The evaluation of biodegradation was performed by optical microscopy (MO), loss of mass, FTIR and XRD. The bionanocomposites presented change of coloration and appearance of fissures. As for loss in mass in the system presented loss of BIO2,5 22.5% and 25.9% BIO5, for 86 days of simulated soil exposure. We also observed by FTIR sharp reduction in intensity of the band corresponding to the C = O groups, indicating that the microbial attack promoted cleavage of the ester group links. By XRD, reduction in the intensity of the peaks and enlargements of the same with increasing exposure time, proving the biodegradation behavior of bionanocomposites. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Lucarelli, Claudio Luiz

    1995-07-01

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

  13. Synthesis and antimicrobial activities of new 4-thiazolidones derived from formipyridine thiosemicarbazones; Sintese e avaliacao da atividade antimicrobiana de novas 4-tiazolidinonas obtidas a partir de formilpiridina tiossemicarbazonas

    Energy Technology Data Exchange (ETDEWEB)

    Vercoza, George Leonardo; Feitoza, Danniel Delmondes; Alves, Antonio Jose; Aquino, Thiago Mendonca de; Lima, Jose Gildo de [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Ciencias Farmaceuticas], e-mail: jgildolima@gmail.com; Araujo, Janete Magali; Cunha, Ivana Glaucia B.; Goes, Alexandre Jose da Silva [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Antibioticos

    2009-07-01

    Twelve novel 4-thiazolidinone derivatives (2a-l) have been synthesized by reacting formylpyridine thiosemicarbazones (1a-l) and anhydride maleic in toluene. Their chemical structures were confirmed by IR, {sup 1}H and {sup 13}C NMR. The new compounds were submitted to in vitro evaluation against pathogenic Gram-positive, Gram-negative bacteria and yeasts. The findings obtained showed that the compounds 2a, 2d, 2e and 2g were effective against some of the bacterial strains used, whereas the compounds 2d, 2e and 2i exhibited a moderate antifungal activity against the yeast strains evaluated. An initial structure activity relationship (SAR) was established. (author)

  14. Critical evaluation of the external occupational exposure in nuclear medicine services in Brazil; Avaliacao critica da exposicao ocupacional externa nos servicos de medicina nuclear no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Kubo, Ana Luiza Silva Lima

    2016-07-01

    Currently in Brazil (2016), there are 421 Nuclear Medicine Services (NMS). In nuclear medicine, the possibility of occupational internal contamination and external exposure is unavoidable. The chest individual monitoring, to estimate the effective dose, is mandatory, but the extremity monitoring is not always made. The aim of this study was to conduct a survey of data for external exposure of NMS professionals in Brazil from 1987 to 2010, analysing them in terms of trends and comparing them with measurements carried out in this work and in other countries. Although most of the NMS is still located in large urban centres (54% in the Southeast region), there is no state without any NMS. The increasing number of NMS has generated the need for more professionals. In the year 1987, they were 755 workers and, in 2010, 4134, with the following distribution of specialties: 29% of Nuclear Medicine Technicians (NMT), 23% of Nursing professionals, 29% of Physicians and 3% of Physicists. The average annual effective dose reached more than 3.0 mSv in some regions of the country, from 1987 to 2010, but tends to 1.0 mSv in 2010. The highest doses, as expected, are received by NMT and Nursing. The professionals who handle radiopharmaceuticals have their hands much more exposed than the chest. During 2010, only 31% of NMT and 16% of Nursing used extremity dosimeters as compared to chest dosimeters. The data from the measurements indicate that not all individual dosimeters are used properly. Generally, both in the measurements as in national registries, the hand doses were higher for professionals who prepared the radiopharmaceutical (NMT) than those who injected (Nursing). The value measured by chest dosimeters can be used to estimate the equivalent dose to the eye lenses, except for NMT at preparation practices at conventional NMS, where the equivalent dose of the lens is about 2 times higher than the dose at the chest. The most exposed areas of the hands are the tips of the index and middle fingers of the non-dominant hand for professionals who carry out preparation of the radiopharmaceutical and the index finger of the dominant hand for those who perform injection in conventional NMS and making fractionation and injection in the case of Positron Emission Tomography (PET). Thus, measurements with dosimetric rings estimate better the extremity equivalent dose than bracelets, which can underestimate the hand equivalent dose by a factor between 10 and 20. Unlike the effective dose, the possibility that an occupational equivalent dose value exceeds the annual limit is real. The ability of the operator and the use of shielding seem to be more important to the magnitude of the dose than the used fractionation technique, which is highly relevant for the dose distribution in the hands. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Lucarelli, Claudio Luiz

    1995-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Borges, Alexandre

    2002-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Correa, Rosangela da Silveira

    2002-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Rene Ramos de

    2011-07-01

    Shot peening is a superficial cold work process used to increase the fatigue life evaluated by residual stress measurements. The peen forming process is a variant of the shot peening process, where a curvature in the plate is obtained by the compression of the grains near to the surface. In this paper, the influence of the parameters such as: pressure of shot, ball shot size and thickness of aluminum 7050 samples with respect to residual stress profile and resulting arc height was studied. The evaluation of the residual stress profile was obtained by sin{sup 2} {psi} method. The results show that the formation of the curvature arc height is proportional to the shot peening pressure, of spheres size and inversely proportional to the thickness of the sample, and that stress concentration factor is larger for samples shot peened with small balls. On final of this paper presents an additional study on micro strain and average crystallite size, which can evaluate the profile of the samples after blasting. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

  2. Influencia de las tecnologías celulares en el rendimiento académico

    OpenAIRE

    y Hellen Navarro Jiménez, Giselle León León, Deyber Alvarado Fernández, Luis Bent Solano

    2014-01-01

    El presente artículo surge a partir de una investigación sobre la influencia de tecnologías celulares en el rendimiento académico, la cual se realizó bajo el enfoque mixto en la clasificación de mixto dominante, en cuanto a los instrumentos para recopilar la información, se aplicó un cuestionario a dieciséis estudiantes de sétimo año, se realizaron observaciones al desarrollo de las lecciones y se entrevistó al docente de enseñanza de las ciencias de un Liceo del Área Metropolitana costarrice...

  3. Cambios en la gestión contable: influencia de las nuevas tecnologías

    OpenAIRE

    Falcón Pérez, Esther; Fuentes Perdomo, Juana; Serrano Moracho, Francisco

    2015-01-01

    [ES]En el trabajo que presentamos se revisan los nuevos enfoques de dirección de empresas basados en gestión de procesos y gestión de riesgos, y su influencia en el futuro de la información económica-financiera, lo que dará lugar a cambios acelerados por las más avanzadas aplicaciones informáticas de la contabilidad y las prácticas de auditoría, puesto que en la práctica diaria de las empresas, tanto la auditoría como la información contable y los sistemas de información, contemplan ya dicho ...

  4. Influencia de curso pre cálculo en ecuaciones diferenciales y desarrollo de pensamiento variacional

    Directory of Open Access Journals (Sweden)

    Mawency Vergel Ortega

    2018-01-01

    Full Text Available La investigación sigue un enfoque cuantitativo con apoyo del enfoque cualitativo, descriptivo, diseño cuasi experimental. En esta investigación se plantearon los objetivos: estudiar si mejoran las competencias en pensamiento variacional y didácticas de los estudiantes con la utilización de curso precálculo utilizando plataforma virtual respecto a enseñanza tradicional; examinar la influencia en desarrollo del pensamiento matemático y su enseñanza; así como analizar qué tipología de alumnos obtiene mejores resultados en relación a su nivel de competencia digital. Se han obtenido los siguientes avances: el grupo experimental ha obtenido una mejora estadísticamente significativa de sus competencias interpretativas y de pensamiento matemático respecto al grupo control.

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

    Directory of Open Access Journals (Sweden)

    Aydee Rivera de Parada

    2015-01-01

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

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

    Directory of Open Access Journals (Sweden)

    Susana Pérez López

    2012-09-01

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

  7. Influencia del modelo elástico en la dinámica de estructuras articuladas

    Directory of Open Access Journals (Sweden)

    Muñoz, M.

    1997-06-01

    Full Text Available Influence in the dynamics of an articulated structure of sweep wooden, of the approximation to the material tension-deformation properties. A time-domain calculation method by finite differences has been used with a model of lumped masses in the nodes.

    Se estudia la influencia en la dinámica de una estructura articulada de barras de madera, de la aproximación a las propiedades tensión-deformación del material. Se ha adoptado un método de cálculo por diferencias finitas en el dominio del tiempo, con un modelo de masas concentradas en los nodos.

  8. Influencia de variables psicológicas en el rendimiento de jugadores amateurs de golf

    Directory of Open Access Journals (Sweden)

    Susana Irazusta

    2006-01-01

    Full Text Available El propósito de la presente investigación es analizar las variaciones del estado de ánimo intracompetición en los jugadores amateurs de golf, así como analizar la influencia que tiene el grado de confianza y otras variables motivacionales en el resultado de la competición. Se realizó la investigación con un total de 296 jugadores y se pasaron los cuestionarios a cada jugador en tres momentos, antes, durante y después de la competición.Una vez analizados los datos se constató que existen grandes fluctuaciones en el estado de ánimo de los jugadores y que el resultado esperado sufre modificaciones a lo largo de la competición.

  9. La influencia socioeconómica en el comportamiento de juego de preescolares

    OpenAIRE

    Pfeifer, Luzia Iara; Rombe, Patrícia Gonçalves; Santos, Jair Licio Ferreira

    2009-01-01

    Considerando que o contexto econômico influencia o brincar de crianças, este trabalho teve por objetivo analisar as diferenças entre os brinquedos utilizados por crianças de duas diferentes classes socioeconômicas. Os dados foram coletados junto a 50 mães de crianças com idade entre três e seis anos, metade pertencentes à classe econômica A2 (Grupo 2), e a outra metade pertencente à classe econômica D (Grupo 1), segundo o Critério Brasil. Os resultados apontam para a existência de diferenças ...

  10. Influencia del yeso sobre la velocidad de hidratación del cemento portland

    Directory of Open Access Journals (Sweden)

    Yamaguchi, G.

    1961-12-01

    Full Text Available Not availablePara esclarecer la Influencia del yeso sobre el fraguado y endurecimiento del cemento, los autores estudiaron el grado de hidratación de los cuatro principales minerales del clínker de cemento Portland y el efecto del yeso sobre ellas. Haciendo uso del análisis cuantitativo de rayos X, se determinó la porción no hidratada. Simultáneamente, se determinaron los tiempos de fraguado y las resistencias. Los ensayos se llevaron a cabo sobre tres clínkeres sintéticos de diferentes composiciones y sobre dos clínkeres de cemento Portland comerciales.

  11. Influence of calcination temperature in pozolanicity of gray sugar cane bagasse; Influencia da temperatura de calcinacao na pozolanicidade da cinza de bagaco de cana-de-acucar (CBCA))

    Energy Technology Data Exchange (ETDEWEB)

    Santos, T.A.; Argolo, R.A.; Andrade, H.M.C.; Ribeiro, D.V., E-mail: tiagoassuncao@hotmail.com [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil)

    2016-07-01

    BCA (Sugar Cane Bagasse) is burned in boilers in the process of electricity cogeneration causing the generation of CBCA (Gray Sugar Cane Bagasse), which is the final residue of sucroalcooeira industry. Currently, several studies seek alternative materials that can replace Portland cement, promoting discussions on the use of pozzolanic materials in cementitious matrices. Thus, this research seeks to analyze the pozzolanicity the CBCA, obtained by calcining the residue at different temperatures, to be determined by TG / DTG and DTA tests. For analysis of pozzolanicity these ashes were used electrical conductivity techniques, chemical titration NP EN 196-5, chapelle modified NBR 15895/2010 and the IAP method (Activity Index pozzolanic NBR:5752). The results obtained during the study demostraramm no difference between the ash calcined at temperatures of 500 ° C, 600 ° C and 700 ° C. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2010-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2004-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2009-07-01

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

  15. Effects of variable loads on equipment and cogeneration cycles performance; Influencia da variacao da carga no rendimento de equipamentos e ciclos de co-geracao

    Energy Technology Data Exchange (ETDEWEB)

    Ernst, Mario A.B.; Balestieri, Jose A.P. [UNESP, Guaratingueta, SP (Brazil). Escola de Engenharia. Dept. de Engenharia Mecanica]. E-mails: basulto1@uol.com.br; basulto@feg.unesp.br; perella@feg.unesp.br

    2000-07-01

    This article presents some aspects relative to the effects of changing loads on steam.generators and turbines. When the equipment solicitation varies due to industrial process demand changes, the equipment work in off-design point, altering its efficiency and the specific fuel rate. This work do not look for a detailed and exhaustive determination of the performance variation with the load but shows that in the selection of equipment this variation can have effects over the consume and the costs. In the present article it is assumed that the load variations are known, and the effects on the equipment efficiency were took from the correlated literature. An example of a Rankine cycle and other of a Brayton cycle are discussed, altering the operational conditions estimating the operating cost for each case. (author)

  16. Effect of economic indicators and uncertainties on the selection of a production strategy; Analise da influencia de indicadores economicos e incertezas na escolha da estrategia de producao

    Energy Technology Data Exchange (ETDEWEB)

    Neves, Fabio Rodrigues; Schiozer, Denis J. [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Mecanica. Dept. de Engenharia de Petroleo; Suslick, Saul B. [Universidade Estadual de Campinas, SP (Brazil). Inst. de Geociencias

    2004-07-01

    The decision of a firm to make investments on petroleum fields depends on the expected economic performance and on the firm economics context and on country economic and regulatory constraints. Traditionally, the Net Present Value (NPV) has being used for decision criterion as a measure of profitability of investments. The other indicators are used to help investment decision, because, according to the priorities established by the firm, only one indicator may not be sufficient. On this paper we will show production strategies considering a set of economic indicators: NPV, actualized Np, Return on investment (ROI), Equivalent Present Value (EPV), Cost Benefit, and NPV/Np ratio. The use of different economic indicators permits capture different aspects from in a decision process, i.e., each indicator or a set of economic measures may result in a different perspective, that will influence the decision manager. It is important to emphasize the use of more than one indicators may been advantageous, mainly on oil reservoirs that present high level of uncertainties. The presented application is related to the choice of the production strategy of a petroleum field. The indicators are used to evaluate the performance of the field and of the production and injection wells. A sensitivity analysis was performed in order to show the use of indicators on uncertain scenarios (oil prices, taxes, etc). The results show that the use of various indicators proportionate a decision taking with a lesser risk, as well as makes possible to capture other project characteristics which not always can be represented by the traditional use of NPV. (author)

  17. Influencia de la rodilla en la amortiguación de vibraciones sobre plataforma oscilante

    Directory of Open Access Journals (Sweden)

    Alejandro Bruñó-Soler

    2014-01-01

    Full Text Available La utilización de plataformas vibratorias se ha extendido en los ámbitos deportivo y clínico. Sin embargo, son escasos los trabajos sobre su correcta utilización y seguridad. En este estudio transversal se registró, en 22 sujetos sanos (23,7 ± 3,7 años, talla 1,75 ± 0,08 m, masa 71,63 ± 14,5 kg con un nivel de actividad física bajo/medio, la aceleración en el eje vertical en la cabeza durante la posición de bipedestación sobre una plataforma vibratoria, en tres angulaciones distintas (180º, 150º y 120º, a tres frecuencias de vibración (5, 16 y 27 Hz y a una amplitud constante (3 mm. El objetivo del estudio fue valorar la influencia de la posición de la rodilla sobre la transmisión de vibraciones desde la plataforma hasta la cabeza. Los resultados indican que la amortiguación de la vibración aumentó con cada incremento en el grado de flexión de la rodilla, siendo la influencia de la posición articular tanto más relevante cuanto mayor fue la frecuencia de vibración de la plataforma (p <0.001. Estos resultados sugieren que para la realización segura de ejercicios en bipedestación sobre plataforma vibratoria a intensidades altas debe evitarse la extensión completa de rodilla.

  18. Influencia del medio familiar en niños con conductas agresivas

    Directory of Open Access Journals (Sweden)

    Nilo Valentín Noroño Morales

    2002-06-01

    Full Text Available Se realizó un estudio descriptivo, sobre la influencia del medio familiar en niños de 9 a 11 años, con conductas agresivas, evaluados y diagnosticados en el Departamento de Psicología del Policlínico " Dr. Tomás Romay"; la muestra estuvo conformada además, por los padres de estos niños. A todos ellos se les aplicó una serie de técnicas con el objetivo principal de describir las características del medio familiar y su influencia en las conductas agresivas de los infantes. Se concluyó en que como características del medio familiar predominaron las familias disfuncionales incompletas, con manifestaciones de agresividad, alcoholismo, mala integración social y familiar, rechazo hacia los hijos e irresponsabilidad en su cuidado y atención.A descriptive study of the influence of the family environment on children aged 9-11 years old, evaluated and diagnosed at the Psychology Department of "Dr Tomás Romay" polyclinics, was carried out. The children´s parents were also part of the sample. All of them were applied a series of techniques to find out the characteristics of the family environment and its influence on children´s aggressive behaviors. It was concluded that the predominant characteristics were uncompleted dysfunctional families with manifestations of aggressiveness, alcoholism, poor social and family integration, rejection to children and lack of responsibility in relation to their care and attention.

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

    Directory of Open Access Journals (Sweden)

    Jessica Ortega Barón

    2016-01-01

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

  20. Institutional and Strategic Influences on IT Architecture Decisions: comparative case studies in Brazilian companiesInfluências Institucionais e Estratégicas em Decisões de Arquitetura de TI: estudo de casos comparados em empresas brasileiras Influencias Institucionales y Estratégicas en la toma de Decisiones de la Arquitectura de TI: estudio de casos en empresas brasileñas

    Directory of Open Access Journals (Sweden)

    SOUZA, Cesar Alexandre

    2013-09-01

    Full Text Available ABSTRACTThe aim of this paper is to examine the influences on IT architecture decisions by viewing it through the lens of Institutional Theory and of Strategic Choice Theory, using the comparative case studies. Institutional influence can be the result of an external action or of something internal within the organizational, whereas strategic influence is related to the voluntary behavior of managers. The case of a large-scale company, where there is extensive internal policy formalization, was compared to a midsize company with a less mature architecture level. In spite of their differences as to the use of IT architecture, similar findings appeared in both organizations concerning these two influences. Both types of influence act together: the strategic type was most mentioned during interviews, whereas the institutional type appeared in decisions related to innovation and risks.RESUMOEsta pesquisa tem como objetivo examinar as influências sobre as decisões de arquitetura de TI sob as lentes da Teoria Institucional e da Teoria da Escolha Estratégica por meio de estudos de casos comparados. A influência institucional pode ser proveniente de uma ação externa ou de algo interno à organização, ao passo que a influência estratégica está relacionada com a ação voluntária dos gestores. O caso de uma empresa de grande porte, que possui maior formalização de suas políticas, foi comparado com o de outra de médio porte, que está em um estágio de maturidade de arquitetura menos avançado. As duas organizações, apesar de haver diferenças em relação ao uso da arquitetura de TI, apresentaram resultados semelhantes relacionados à atuação dessas duas influências. Ambas as influências agem em conjunto: a estratégica foi a mais mencionada pelos entrevistados e a institucional apareceu pontualmente em decisões que envolviam inovação e riscos.RESUMENA partir de la Teoría Institucional y de la Teoría de la Elección Estrat

  1. Aplicação do método Fuzzy na classificação da zona de convergência do Atlântico Sul no sul da Amazônia

    Directory of Open Access Journals (Sweden)

    Samuel Oliveira Vieira

    2014-12-01

    Full Text Available A Zona de Convergência do Atlântico Sul (ZCAS influencia a variabilidade da precipitação no sul da bacia Amazônica. Nesse sentido, foi aplicado o Método da Lógica Fuzzy de modo a ter um mecanismo de alerta para as chuvas acima da média climatológica devido à ZCAS (classificada como oceânica, costeira ou Amazônica sobre o Sul da Amazônia, nos meses de novembro a março no período 1999 a 2010. Um algoritmo objetivo na identificação da ocorrência de ZCAS foi esquematizado e a classificação em termos linguísticos permitiu categorizar em diferentes tipos. Durante os períodos de ZCAS, a possibilidade de ocorrer chuvas fortes diárias (> 20mm é mais de duas vezes maior do que a climatologia. ZCAS Amazônicas e costeiras produzem aproximadamente 71,4% da precipitação, referentes aos meses de janeiro a março representando 64% dos episódios atuantes no Sul da Amazônia.

  2. Influencia de la actividad física y la alimentación equilibrada en la mejora de la calidad de vida /

    OpenAIRE

    Vidaurrazaga Dobaran, Andoni

    2013-01-01

    Se estudia la influencia que la actividad física tiene en la calidad de vida de las personas. Es de sobra conocido que vivir de forma saludable es beneficioso para la salud pero se trata de esclarecer qué entendemos por “vivir de forma saludable” y cuál puede ser su influencia en el mantenimiento y mejora de la calidad de vida de las personas

  3. Corpo e religião: marcas da educação evangélica no corpo feminino

    Directory of Open Access Journals (Sweden)

    Ana Carolina Capellini Rigoni

    2013-03-01

    Full Text Available Este estudo teve como objetivo compreender a forma como a Igreja Evangélica Assembleia de Deus influencia na educação do corpo das meninas que a frequentam. O estudo teve como base o referencial teórico da Sociologia e da Antropologia, constituindo-se como uma etnografia, realizada em um templo da Assembleia de Deus na cidade de Campinas/SP, entre março de 2006 a dezembro de 2007. A partir deste estudo percebemos o modo como a educação religiosa recebida pelas meninas gera implicações na educação do corpo das mesmas, que estabelecem uma espécie de negociação entre os costumes postulados pela Igreja e outras formas de educação.

  4. Relação entre necessidade de adornos com satisfação com imagem corporal e autoconceito profissional da equipe de enfermagem

    Directory of Open Access Journals (Sweden)

    Ana Cláudia Puggina

    2015-12-01

    Full Text Available Resumo Objetivo: Relacionar a sensação de falta de adornos com a satisfação da imagem corporal e o autoconceito profissional dos membros da equipe de enfermagem. Métodos: Estudo analítico quantitativo. Profissionais da equipe de enfermagem (n = 46 responderam a Escala de Autoconceito Profissional, a Escala de Avaliação da Satisfação da Imagem Corporal e um questionário de caracterização. Resultados: O escore médio total da Escala de Autoconceito Profissional foi de 111,6 (± 13,3 e da Escala Avaliação da Satisfação com a Imagem Corporal foi de 81,6 (± 14,1. Houve diferenças estatisticamente significativas na comparação da sensação de falta de adornos nas dimensões Realização (valor de p = 0,0074, Autoconfiança (valor de p = 0,0386 e Saúde (valor de p = 0,0109 da Escala Autoconceito Profissional. Conclusão: Indivíduos mais realizados, mais autoconfiantes, que mais percebem a influencia do trabalho na própria saúde e mais satisfeitos com a aparência não sentiram falta de adornos no ambiente hospitalar.

  5. EL MERCADO INMOBILIARIO EN EL ÁREA METROPOLITANA DE COCHABAMBA-BOLIVIA: CARACTERÍSTICAS E INFLUENCIAS EN LA CONFIGURACIÓN URBANA

    Directory of Open Access Journals (Sweden)

    Juan E. Cabrera

    2017-06-01

    Full Text Available El artículo expone resultados parciales de un trabajo de monitoreo del mercado inmobiliario del Área Metropolitana de Cochabamba desarrollado entre el año 2013 y 2017 coordinado por la Dirección del Centro de Investigaciones en Arquitectura y Urbanismo. A través de la sistematización de un conjunto amplio de datos alfanuméricos y geográficos, se expone la situación del mercado inmobiliario metropolitano de Cochabamba desde la dimensión de la oferta especializada. En ese marco, el artículo da luces sobre un posible estancamiento y/o desaceleración de la dinámica inmobiliaria regional, lo que sugiere la conclusión del proceso expansivo del sector de la construcción en la última década. En su dimensión geográfica el artículo presenta un análisis que expone algunas particularidades del comportamiento espacial de la oferta de inmuebles en el área de estudio, seguido de una evaluación de características e influencias en la configuración urbana y la segregación socio espacial. Se parte de la hipótesis de que la dinámica del mercado inmobiliario influye más que la planificación en la configuración urbana de la región.

  6. Recuperación de listeria monocytogenes dañada subletalmente por efecto de la congelación

    OpenAIRE

    Blanco Gutiérrez, María del Mar

    1995-01-01

    Se han estudiado distintos aspectos relacionados con la influencia que ejerce la congelación sobre la viabilidad y el daño celular sobre las listerias en general y l. Monocytogenes, asi como distintas cuestiones con relación a la detección de listerias a partir de muestras que han sufrido un proceso de congelación. Respecto a la primera parte, hemos observado que la resistencia de l. Monocytogenes a los efectos letales y subletales de la congelación (-20 c) se ve influenciada por la concentra...

  7. Melhoria da produtividade do processo de usinagem de uniões em ferro fundido maleável preto

    OpenAIRE

    Pereira, Sidnei

    2007-01-01

    Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica A produtividade é um dos fatores de maior impacto no desempenho de uma empresa, pois influencia diretamente nos custos dos produtos e no dimensionamento adequado da fábrica relacionado à produção, pessoas e tempos de máquinas paradas. Na usinagem especificamente, há muitas variáveis de processo que dificultam o trabalho de melhora no índice de produtividade...

  8. Niilismo, Ressentimento e Patologia: A Filosofia de Schopenhauer como Sintoma da Decadência Cultural Europeia Segunda a Crítica de Friedrich Nietzsche

    Directory of Open Access Journals (Sweden)

    Eli Vagner Rodrigues

    2017-02-01

    Full Text Available Pretende-se neste artigo abordar o problema da relação entre o ressentimento e a formação dos juízos morais presentes na obra de Schopenhauer a partir de uma perspectiva crítica proposta por Nietzsche que tem suas bases na constatação de que existe na ética ocidental um enfraquecimento das posturas afirmativas da vida como resultado de uma decadência fisiopatológica que influencia a ordem dos juízos morais sobre a existência humana. A ética niilista de Schopenhauer seria um exemplo de uma desagregação dos instintos afirmativos vitais configurando-se por isso como uma moral da fraqueza e, consequentemente um sintoma da decadência cultural europeia.

  9. Influencia de la autoestima y del apoyo social percibido sobre el bienestar psicológico de estudiantes universitarios chilenos

    Directory of Open Access Journals (Sweden)

    Enrique Barra Almagia

    2012-01-01

    Full Text Available El presente estudio, de tipo correlacional transeccional, examinó la influencia de la autoestima y del apoyo social percibido sobre el bienestar psicológico, en una muestra de 450 estudiantes de ambos sexos de la Universidad de Concepción, Chile, quienes respondieron las Escalas de Autoestima de Rosenberg, de Bienestar Psicológico de Ryff y el Cuestionario de Apoyo Social Percibido. Se encontró que la autoestima tenía una influencia mayor sobre el bienestar psicológico que el apoyo social percibido. Aunque no hubo diferencias de sexo en el bienestar psicológico global, se observaron diferencias a favor de los hombres en las dimensiones de autoaceptación y autonomía, y a favor de las mujeres, en crecimiento personal, así como diferencias a favor de los hombres en autoestima y a favor de las mujeres en apoyo socialpercibido.

  10. INFLUENCIA DE LOS INVERSIONISTAS INSTITUCIONALES EN LAS DECISIONES DE ESTRUCTURA DE CAPITAL DE LA EMPRESA. Evidencia para un mercado emergente

    Directory of Open Access Journals (Sweden)

    Felipe Araya Sepúlveda

    2015-01-01

    Full Text Available Este artículo analiza empíricamente la influencia de las Administradoras de Fondos de Pensión (AFP como principales accionistas institucionales, sobre las decisiones de estructura de capital de la empresa chilena. Estos inversionistas pueden influir en la estructura de capital mediante distintos papeles como los de monitoreo a la gestión y de recopilación y transferencia de información al mercado. El análisis es desarrollado durante el periodo 2009-2011 para una muestra de 109 empresas chilenas que cotizan en la bolsa. Las AFP no sólo participan en el mercado accionario sino que también compiten por la deuda pública, por lo que nuestros resultados son relevantes al indicar la positiva influencia de este tipo de inversionistas en la contratación y emisión de deuda, particularmente la pública.

  11. INFLUENCIA DE LA PRESIÓN ATMOSFÉRICA EN LAS TRANSMISIONES A FRECUENCIA 2.4 GHz

    OpenAIRE

    González Romero, Pedro Vicente; Espina Ávila, Luis Gerardo

    2012-01-01

    La presente investigación se planteó como propósito fundamental determinar la influencia de la presión atmosférica sobre una señal transmitida en una frecuencia de 2.4 GHz. La investigación es de tipo explicativa, con diseño metodológico experimental. Mediante ella se obtiene la atenuación de una señal de 2.4GHz a diferentes presiones atmosféricas y se determinan las gráficas que muestran el comportamiento observado. Como resultado de esta investigación se observó que sí existe una influencia...

  12. Los niños, la influencia de la televisión y el rendimiento escolar

    OpenAIRE

    Pauta Guevara, Ricardo Arturo

    2015-01-01

    La presente investigación titulada “Los niños, la influencia de la televisión y el rendimiento escolar”, tiene como objetivo general mostrar la influencia que ejerce la Televisión en el comportamiento y en el rendimiento escolar de los niños de 6 a 9 años de edad, de clase media de Lima. Los medios de comunicación hoy en día, son parte de nuestra vida. Nos acompañan y entretienen, ponen a nuestro alcance lo ajeno y lejano, alientan nuestra imaginación con personajes e historias, nos mantienen...

  13. Cambios espaciales y su influencia en la configuración territorial de Aguazul y Tauramena 1974–2005

    Directory of Open Access Journals (Sweden)

    Claudia Yolima Devia Acosta

    2011-09-01

    una periodización basada en el cambio en las actividades económicas y en los cambios político-administrativos en la configuración territorial de estos municipios. El artículo centra el análisis en la influencia de la actividad petrolera en la región, y en su capacidad directa e indirecta de transformar el territorio.

  14. Celos y violencia en alumnos de enseñanza secundaria. Influencia de los estilos educativos familiares

    OpenAIRE

    Aymerich Navarro, Mª del Milagro

    2016-01-01

    El objetivo de la tesis consiste en establecer la relación entre los celos en la adolescencia y la influencia de los estilos educativos familiares a la hora de explicar la violencia entre iguales, las reacciones emocionales y las conductas desajustadas de los adolescentes. Las reacciones emocionales se miden con las variables: celos, ansiedad y hostilidad. En cuanto a las reacciones conductuales se maneja como variable el bullying o victimización entre iguales. Con respecto a la variable e...

  15. INFLUENCIA DE LAS FASES LUNARES SOBRE EL RENDIMIENTO DEL MAÍZ (Zea mays variedad NB6

    Directory of Open Access Journals (Sweden)

    Larry Flores Martínez

    2012-10-01

    Full Text Available La observación de las fases lunares para realizar actividades agrícolas, es una costumbre de muchas culturas alrededor del mundo. Sin embargo, existen pocos estudios científicos relacionados con este tema. El objeto  de esta investigación fue determinar la influencia de las fases lunares sobre el rendimiento del maíz. Para ello se consultó a 45 productores de 19 comunidades de la Región Autónoma Atlántico Sur (RAAS, sobre el uso de las fases lunares para la siembra. Además, se estableció un experimento utilizando un diseño de bloques completamente al azar con cuatro repeticiones por cada fase lunar (16 parcelas en total. Se midió el porcentaje de germinación, el crecimiento y rendimiento del cultivo.  Los datos fueron analizados utilizando el programa InfoStat versión 2010. Los resultados reflejan que la germinación de las semillas presentó diferencias estadísticas significativas, siendo mayores en parcelas sembradas en las fases de cuarto creciente y luna nueva. La variable altura, largo y peso de mazorca, no presentaron diferencias significativas según fase lunar. En la variable diámetro del tallo se encontró diferencia significativa; las plantas sembradas en luna nueva presentaron el mayor diámetro. El daño causado por enfermedades y herbívoros presentó un resultado variable para las cuatro fases lunares. El peso promedio del maíz sembrado en la fase de luna nueva fue mayor que en las otras fases, contrario a la creencia popular de los productores de la región.SUMMARYObservation of the moon phases for agricultural activities is a custom in many cultures around the world. However, there are few scientific studies related to this topic. The purpose of this research was to determine the influence of moon phases on corn yields. In order to achieve this goal, 45 producers were consulted from 19 communities in the South Atlantic Autonomous Region (RAAS, regarding the use of the moon phases for sowing. Besides, an

  16. A dor e o protagonismo da mulher na parturição

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    Raquel da Rocha Pereira

    2011-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVO: Compreender pela teoria das representações sociais, as dimensões socioculturais da dor e seu impacto no protagonismo da mulher na parturição. MÉTODO: Para a investigação, utilizou-se a metodologia qualitativa, com o referencial teórico da fenomenologia e da teoria da representação social. Foram realizadas 45 entrevistas semiestruturadas com gestantes dos serviços público e privado de saúde de Joinville, SC, com no mínimo quatro consultas de pré-natal e que estavam no terceiro trimestre de gestação. RESULTADOS: Da análise de conteúdo das falas, emergiram três categorias empíricas: medos e preocupações, vivências e influência sociocultural, as quais possibilitaram construir três categorias interpretativas: modelo biomédico, desinformação e papel da mulher na decisão pela via de parto. Os achados relatados neste artigo evidenciam a dor como um dos elementos construtores das representações sociais feminina sobre a parturição. Observou-se que a dor influencia o comportamento da gestante a partir do medo e se torna a gênese de outros sentimentos aversivos e preocupações que envolvem o evento da parturição. CONCLUSÃO: Nesse contexto, a dor revela-se como um dos principais construtores das atuais representações sociais femininas sobre a parturição e contribui para a curva ascendente nos índices de cesárea no Brasil.

  17. Filosofia da análise da estabilidade da liquidez

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    Rodrigo Antônio Chaves da Silva

    2005-07-01

    Full Text Available A informação foi considerada finalidade de nosso conhecimento, até o período em os pensadores e pesquisadores da contabilidade passaram a raciocinar sobre o conteúdo e o significado dos informes. Nesta busca da razão sobre os estados patrimoniais, surgiu a análise contábil que procura por meio de relações e identidades, o significado da dinâmica expressa da estaticamente na informação. O primeiro aspecto que surgiu no objeto de análise foi o estudo da liquidez, que é um dos principais exercícios do patrimônio. A estabilidade também é outro exercício básico e imprescindível, pois este é que promove o equilíbrio do organismo administrativo. A ciência contábil após a sua dignidade científica passou a trilhar caminhos esplendorosos, amparados em doutrina que permite alcançar os píncaros filosóficos. Os estudos concernentes aos aspectos de interação da estabilidade na liquidez são, complexos e somente com os recursos filosóficos da contabilidade se pode estudá-los com o panorama holístico e sublime. A filosofia da contabilidade não é alheia às suas práticas tecnológicas, podendo buscar pontos sublimes de panoramas abrangentes, para o estudo analítico da liquidez e estabilidade, observando todas as dimensionalidades e essencialidades de acontecimentos, na comprovação e orientação dos estados de ineficácia e eficácia patrimonial.

  18. Influencia española en la enfermería colombiana Spanish influence Colombian nursing

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    Ana Luisa Velandia M

    1993-07-01

    Full Text Available La autora establece cuatro herencias recibidas por la enfermería colombiana: la tradición de tipo religioso, la condición femenina o de género, la herencia militar y la herencia antropológica o étnica. En esta última se tiene en cuenta tanto la herencia indígena como la influencia de la enfermería española, con todos sus influjos mediterráneos. La influencia religiosa se inicia con el sacerdote Jesuita Pedro Claver hacia 1610 -1617; continúa con los Hermanos Hospitalarios de San Juan de Dios hacia 1768 y posteriormente en 1873 con la llegada de las Hermanas de la Caridad de la Presentación. Compara la organización de la enfermería en el Hospital de la Santa Cruz de Barcelona, donde parece ser se empezó a organizar la enfermería como tal, analizando las funciones del Administrador de la sala de enfermos, el Servidor, las mujeres encargadas de las salas de enfermas o de niños, la Ecónoma, la Jefe de Sala, y el Enfermero Mayor, en relación con los cargos y funciones actuales en los Hospitales colombianos.Four statements inferenced from: religious traditions, gender or woman status, military heritage and ethnic inheritance, and their influence in nursing, are presented in this article. The ethnic inheritance analyses the issue based upon the cultural influences of the native-indigenous groups and the Spanish and Mediterranean attributes in nursing development.The religious tradition began with Pedro Claver's J.C. presence between 1610 and 1617. His presence is followed by the "Hermanos Hospilalarios de San Juan de Dios" in 1768, and further with the presence of the sisters of Charity in 1873. Lastly, the article compares the Barcelona's Santa Cruz hospital organization, where at that time, seems to appear a new type of nursing arrangement; which present functions and charges, currently utilized in Colombian hospitals ( administrator of patient rooms, "Servidor", women in charge of female patients and sick children, "economa

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2000-07-01

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

  20. Influencia de los sistemas de información en las organizaciones

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    Diana Suárez López

    2011-01-01

    Full Text Available Resumen:El siguiente artículo tiene como objetivo resaltar el papel fundamental que tienen los sistemas de información en nuestras organizaciones, los impactos e influencia en cada área en las que implementamos estos sistemas para hacer más eficiente y eficaces los procesos administrativos, involucrando a todos los que conforman la organización. Por otra parte cómo puede una organización adquirir ventajas competitivas de las otras a través de los sistemas de información.Palabras Claves:Sistemas de Información, Tecnología, Organización, Internet, Competitividad.Abstract:The following article aims to highlight the fundamental role of information systems in our organizations, the impact and influence in each of the areas in which we implement these systems to create more efficient and effective administrative processes, involving all making up the organization. Moreover, this article also highlights how an organization can acquire competitive advantages from other organizations through information systems.Keywords:Information Systems, Technology, Organization, Internet, Competitiveness.

  1. La influencia del conocimiento político en las decisiones de voto

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    Marta FRAILE

    2007-01-01

    Full Text Available Este trabajo discute y compara dos lógicas explicativas del comportamiento electoral: el voto por resultados y el voto ideológico. En concreto, el trabajo pone a prueba uno de los principales supuestos de ambas teorías: que las reglas que guían las decisiones de voto de los ciudadanos son las mismas independientemente de su nivel de interés, conocimiento e información sobre los temas políticos. Para ello se analiza material empírico proveniente de encuestas postelectorales en cuatro democracias: España, Portugal, Hungría y Polonia. Los datos pertenecen al segundo módulo del programa de Estudio Comparado de Sistemas Electorales (CSES, 2005, que contiene información sobre el comportamiento electoral y el conocimiento político de los ciudadanos. Los resultados apuntan a que mientras la influencia del conocimiento político en la lógica del voto por resultados es clara y contundente, resulta mucho menos concluyente en el caso del voto ideológico. Todo ello sugiere que el control democrático de los gobiernos a través de la sanción de su rendimiento requiere unos niveles mínimos de conocimiento e información sobre la política por parte de la ciudadanía.

  2. Influencia del consumo de cannabis en la enfermedad periodontal: una Scoping Review

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    Matias Mederos

    Full Text Available Resumen: Recientes publicaciones plantean la posible asociación del cannabis (Cannabis sativa con el desarrollo de la periodontitis. Objetivo: Analizar la influencia del consumo de cannabis en la enfermedad periodontal, relevando la evidencia disponible e identificando las variables asociadas en los estudios . Material y método: se realizó una Scoping Review a partir de una búsqueda estructurada en PubMed/ MEDLINE, Science Direct, LILACS, SciELO hasta mayo de 2017 . Resultados: Estudios “In vivo” mostraron una mayor pérdida ósea en animales expuestos a Cannabis. Los casos clínicos muestran que el uso crónico de cannabis puede resultar en agrandamientos gingivales y periodontitis crónica severa localizada. Los estudios epidemiológicos demuestran una asociación estadística entre Cannabis y periodontitis. Conclusiones: El consumo del Cannabis parece estar asociado con una mayor presencia de periodontitis. Sin embargo, se desconoce el mecanismo específico por el cual actúa en los tejidos gingivales.

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

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    Shklyar, V.

    1998-12-01

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

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

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

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    Jeniffer Granados Ruíz

    2014-01-01

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

  5. El fantasma del abstencionismo y la influencia mediática

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    Lic. Edith Barajas

    2001-01-01

    Full Text Available Nadie duda, en el inicio de un nuevo milenio, de la influencia y el impacto de los medios masivos de comunicación. La prensa, la radio, la televisión y, contemporáneamente Internet, juegan un papel clave en la nueva era de la humanidad, donde la paradoja es tener información a mansalva para un ser actual dominado por fenómenos como el cortoplacismo, los antimodelos, las guerras, el esoterismo, la hambruna, la religión y la violencia, todo englobado, a su vez, en una economía mundializada que rompe y descarna las fronteras de las naciones, y en donde los futurólogos citan las dos grandes vías: la era digital y la era biológica.En el llamado "control de masas", el medio masivo, especialmente el electrónico, desarrolla un actor importante dentro del mundo global, pues mantiene a la mayoría de la población concentrada en temas que no son precisamente los del orden de mayor interés (en nuestro país, podemos considerar el escándalo Trevi-Andrade como un elemento distractor, sobre los problemas que aquejan al país; es decir, la opinión pública se concentra en ese enfoque, antes de irse a lo medular

  6. Influencia de los Roles de Equipo en las Actividades del Desarrollador de Software

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    Elsa Estrada Guzmán

    2013-05-01

    Full Text Available Uno de los roles básicos en el proceso del software es precisamente el de desarrollador, también denominado ingeniero de software, cuyas actividades principales son: el análisis, diseño, programación y pruebas del producto a desarrollar. Estas actividades, dependiendo generalmente del tamaño del proyecto y de la metodología, pueden estar a cargo de diferentes personas o bien de un grupo de desarrolladores que en conjunto las llevan todas a cabo; en este último caso, estaríamos hablando de trabajo en equipo entre iguales o pares. Por otro lado, de acuerdo con la teoría de roles de equipo, las personas tienden a comportarse de manera regular en forma distintiva cuando colaboran, estas formas particulares de colaborar es probable que influyan en el desempeño del equipo de desarrolladores de software. En este documento se presenta un caso de estudio con la finalidad de entender la influencia de los roles de equipo en ciertas actividades involucradas en el proceso de desarrollo de software.

  7. INFLUENCIA DE LA DENSIDAD DE SIEMBRA Y LA PODA EN EL CULTIVO DEL PEPINO (Cucumis sativus

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    Paublo Javier Bravo Bravo

    2011-12-01

    Full Text Available El objetivo de la investigación fue determinar la influencia de la densidad de siembra y el número de poda de ejes en el cultivo de pepino (Cucumis sativus. Se estudiaron tres distancias de siembra 1.0x0.2, 1.0x0.4 y 1.0x 0.6 m y la poda de ejes productivos dejando 1, 2 y 3 ejes por planta. La poda se realizó a los 30 días después del trasplante. Se evaluaron las características del fruto de diámetro (cm, longitud (cm, peso (g, fruto por planta y rendimiento por hectárea. Los tratamientos se distribuyeron en un diseño de bloques al azar y los datos se analizaron mediante análisis de varianza. Se obtuvo diferencias para la variable rendimiento/hectárea con respecto al resto de las variables evaluadas.

  8. La guerra de Argelia y la Argentina. Influencia e inmigración francesa desde 1945

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    Ranaletti, Mario

    2005-12-01

    Full Text Available This paper approaches the question of the French presence and influence in the Argentine society between 1955 and 1976, specially, in the military and catholic spheres. Two questions are treated in this article. First, it analyzes two moments of the French migration process in Argentina in the long run: the fugitives’ arrival --with charges for intelligence with the German occupant--, and the émigrés and fugitives’ arrival as result of the Algeria’s independence. Secondly, these facts are related to the construction of the State terrorism implemented in Argentina since 1974.

    Este trabajo aborda la cuestión de la presencia e influencia francesa en la sociedad argentina entre 1955 y 1976, en especial en el ámbito militar y católico. Dos cuestiones son tratadas en este artículo. En primer término, se analizan dos momentos de una presencia inmigrante de más larga data como la francesa: la llegada de fugitivos con cargos por inteligencia con el ocupante alemán, y el arribo de emigrados y fugitivos como resultado de la independencia de Argelia. En segundo lugar, se relacionan estos hechos con la construcción del terrorismo de Estado implementado en Argentina a partir de 1974.

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

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    Antonia Mercedes García Cabrera

    2008-01-01

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

  10. Las influencias de Bakunin y Kropotkin sobre el movimiento libertario español

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    Frank Mintz

    2010-04-01

    Full Text Available El autor hace hincapié en el peso de la visión bakuninista en el inicio del movimiento sindical español y de paso trata de trazar líneas de separación entre el sindicalismo libertario y el movimiento anarquista. Insiste también en la profunda influencia de Kropotkin entre la militancia de la CNT.El autor considera que el movimiento libertario español (con su honda tradición sindical es inseparable de Bakunin y Kropotkin.Palabras claves:  CNT, Movimiento libertario, Bakunin, Kropotkin____________________ABSTRACT:The author emphasizes the weight of Bakunin's vision in starting the Spanish trade union movement and by the way he tries to draw lines of separation between libertarian syndicalism and anarchist movement. He underlines also the profound influence of Kropotkin among CNT activists. The author believes that the Spanish libertarian movement (with its deep tradition of unionism is inseparable from Bakunin and Kropotkin. Keywords: CNT, libertarian movement, Bakunin, Kropotkin

  11. Influencia de las diferentes etapas de procesamiento sobre la microestructura de dispositivos multicapa basados en PZT

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    Solera, E.

    2002-02-01

    Full Text Available A comparative study of the influence of both rheological and processing parameters on the microstructure and reliability of multilayer ceramic chips based on PZT has been conducted. The multilayer chips were obtained by tape casting. Viscosity measurements of different slurries with various solids content have been correlated with both the thickness and the green density of the casted layers. The critical points of the thermal treatments, organics burn-out and sintering, have been identified. The green microstructure of the layers and the final microstructure of the sintered chips have been studied by SEM.

    Se ha realizado un estudio comparativo de la influencia de los parámetros reológicos y de procesamiento sobre la microestructura y consistencia de chips multicapa de PZT obtenidos mediante un proceso de colado en cinta. Para ello se han realizado medidas de viscosidad de distintas barbotinas con diferente contenido en sólidos y su relación con el espesor y densidad en verde de las cintas obtenidas, se han identificado los puntos críticos del ciclo de quemado-sinterización y, mediante MEB se ha estudiado la microestructura en verde de las láminas coladas y la microestructura final de los chips multicapa fabricados.

  12. Influencia del cine en la Generación del 27

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    Flora Lobato

    2011-08-01

    Full Text Available Recibido: 19 de marzo, 2008 • Aprobado: 22 de abril, 2008 Este artículo se centra en la influencia que el cine ejerció en la literatura. La aparición del cinematógrafo supuso una revolución en lo cultural; y el mundo de la imagen vino a sumarse a otras artes milenarias, como la pintura y la literatura, las cuales habían servido al hombre para expresar ideas y sentimientos. El cine se considera una rama más de las vanguardias, y, así, el genio creativo de nuestros poetas de la Generación del 27 se vio fructificado, accediendo a territorios antes no explorados por ellos, con lo que sus imágenes y metáforas sobrepasaron los límites conocidos y se adentraron en un universo nuevo, marcado por lógicas de carácter más aperturista.

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

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    Paterson da Rocha Severo

    2016-12-01

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

  14. A Influência do Valor Percebido e da Satisfação do Cliente sobre o Comportamento de Boca a Boca: uma análise em academias de ginásticaThe Influence of Perceived Value and Customer Satisfaction on the Word of Mouth Behavior: an analysis in academies of gymnasticsLa Influencia del Valor Percibido y de la Satisfacción del Cliente en la Conducta Boca a Boca: un análisis en los gimnasios

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    COSTA, Francisco José da

    2008-09-01

    Full Text Available RESUMOO propósito central deste artigo foi analisar a relação entre os construtos valor percebido (e seus antecedentes de qualidade e sacrifício, satisfação dos clientes de serviços, e comportamento de boca a boca (nas dimensões de intensidade e favorabilidade. A partir da revisão da literatura sobre os temas, foram enunciadas treze hipóteses de pesquisa, que foram aplicadas, tomando como contexto empírico o setor de academias de ginástica da cidade de Fortaleza (Ceará. Foi pesquisada uma amostra de 108 respondentes, com coleta de dados feita por meio de questionário estruturado, aplicado em quatro diferentes academias. Os construtos foram avaliados em separado, por meio de estatísticas descritivas e a análise das hipóteses foi feita com o apoio da técnica estatística Análise de Regressão Múltipla, realizada em cinco modelos distintos. Os resultados encontrados mostraram a consistência de nove das treze hipóteses, indicando, especialmente, que a satisfação e o valor percebido são antecedentes consistentes da favorabilidade e da intensidade das ações de boca a boca dos clientes. Os resultados apontaram elementos para uma melhor compreensão das relações definidas, e, também dá indicações para futuras pesquisas envolvendo os temas tratados.ABSTRACTThe main purpose of this article was to analyze the relationship between the constructs perceived value (and its antecedents of quality and sacrifice, satisfaction of services customers, and word of mouth behavior (in its dimensions of activity and praise. From the literature review, 13 hypotheses were announced, and these hypotheses were submitted to test taking as empirical context the sector of fitness gyms from the city of Fortaleza (Ceará. A sample of 108 respondents was searched, with data collection done with a structured questionnaire, administered in four different fitness gyms. The constructs were evaluated separately, by using descriptive statistics, and the

  15. QUALIDADE FÍSICO-QUÍMICA DA UVA E PERFIL SENSORIAL VÍNICO PARA DIFERENTES CULTIVARES DE VIDEIRA SUBMETIDAS À PODA MECANIZADA

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    ANTONIO ODAIR SANTOS

    2015-06-01

    Full Text Available Estudos ao longo do Globo têm mostrado que a mecanização da poda, dentre outros processos de manejo da videira, é adequada para a obtenção de vinhedos com “stands” bem formados e com qualidade de produção equivalente ou superior àqueles conduzidos sob manejo manual, sobretudo com economia de capital humano e financeiro. Informações sobre o padrão de poda que influencia diretamente a ecofisiologia do dossel, a composição do rendimento e a qualidade de derivados da uva são existentes para condições de manejo tradicional manual, mas incipientes para a uma condição mecanizada, no Brasil. Um experimento foi realizado com Vitis sp. e Vitis vinifera, visando a estudar os impactos da adoção inicial da poda mecanizada, sobre a composição do rendimento, qualidade da uva e perfil sensorial dos vinhos produzidos no experimento. Os resultados mostraram que a aplicação da poda mecanizada em vinhedos tradicionais causou pequenas flutuações na qualidade da uva, em duas safras analisadas.

  16. Efeito da cadência de pedalada sobre a arquitetura do músculo vasto lateral e o comprimento da unidade músculo-tendínea

    OpenAIRE

    Júlio Cezar Lima da Silva

    2016-01-01

    A cadência de pedalada é um importante componente na produção de potência, sendo responsável pelas mudanças na velocidade de encurtamento muscular, a qual influencia diretamente o desempenho no ciclismo. Ainda não está claro se a redução na ativação muscular e o menor torque no pedivela estão associados com a redução na contribuição dos tecidos ativos e/ou passivos em diferentes velocidades de pedalada. O objetivo da presente dissertação foi investigar o efeito de diferentes cadências de peda...

  17. A Sintaxe da Janela

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    Luís Antônio Jorge

    1993-12-01

    Full Text Available A preocupação fundamenta! do trabalho é de caráter ontológico: esboçar o problema das significações apriorísticas e autônomas dos elementos que compõem a sintaxe arquitetônica. O trabalho elege um desses elementos: a janela. Este artigo parte da aproximação histórica entre a janela e a secção da pirâmide visual, construção imaginária da teoria da perspectiva renascentista. A consideração da janela na linguagem arquitetônica implica reconhecer uma ambigüidade essencial: a janela deve inserir-se ordenadamente no plano da parede - raciocínio típico da modenatura - mas também relacionar-se com a imagem vista através dela, que extrapola o plano, ressaltando a tridimensionalidade - herança da perspectiva renascentista, fundamentada no espaço euclidiano. Ver janela ou ver através da janela são alternativas que se colocam tanto ao observador interno ao edifício, quanto ao externo. Texto de duplaface, a sintaxe da janela versa sobre o relacionamento desses dois lados

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

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    Oscar Daniel Duarte

    2014-05-01

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

  19. La influencia de la televisión en los niños

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    Laura PERLADO EKMAN

    2009-11-01

    Full Text Available RESUMEN: En este artículo se exponen los resultados más relevantes de una investigación que pretendía analizar la influencia que ejerce el medio televisivo en los niños con edades comprendidas entre los 6, 7 y 8 años. Un cuestionario conformado por 55 preguntas, agrupadas en diferentes dimensiones y de opciones múltiples fue aplicado a una muestra de 432 niños con edades de 6, 7 y 8 años procedentes de 8 centros educativos de Zaragoza (España, acerca de la influencia que la televisión genera en ellos. Para el análisis de los resultados se utilizaron las pruebas pertinentes. Como conclusiones más relevantes de esta investigación se puede constatar que: los niños muestran interés por todos los programas infantiles que incluyen escenas de acción y violencia, relegando a segundo término los educativos; la publicidad moldea decisivamente la mente de estos niños, los niños pasan la mayoría de su tiempo libre sentados frente al televisor, la publicidad de los juguetes es percibida por ellos como engañosa. Les cuesta distinguir entre ficción y realidad. Resulta injustificable que no exista una mayor regulación y un control seguro sobre publicidad y programas infantiles.ABSTRACT: In this article I report the results of an investigation which tried to detect the effects of television in eight Primary Schools. The study was performed in eight Primary Schools from Zaragoza (Spain with 432 children. Theirs ages are 6, 7 and 8 years old. The children answered to 55 questions about the programs of television. Data was analyse using the stadistic program SPSS. The analysis of the investigation results showing that the children are specially interested in violent programs and the children don't like didactic programs very much. The children are very often sitting in front of television.RÉSUMÉ: Dans cet article je donne une information sur une recherche qui prétendait détecter l'influence.de la télévision dans huits Écoles Primaires

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

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    Belinda de Frutos Torres

    2012-04-01

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

  1. Educación para la salud. Influencia en ancianos hipertensos

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    Regla Ledia González Sánchez

    1999-01-01

    Full Text Available Se realizó estudio descriptivo longitudinal, sobre la influencia de la Educación para Salud en la adquisición de conocimientos y cambios de actitud y control de la enfermedad en ancianos hipertensos de 2 consultorios del Policlínico California, en el año 1977. El universo lo constituyeron 126 ancianos, a los que se les aplicó MINI-MENTAL-TEST, resultando aptos para la investigación 92 gerontes, a éstos se le realizó encuesta y resultó que el mayor porcentaje tenía conocimientos sobre su enfermedad evaluados de regular, al igual que la actitud ante la misma. Estos aspectos mejoraron después de la técnica educativa, incrementándose también el número de pacientes controlados de su enfermedad. Se formularon recomendaciones.A descriptive and longitudinal study about the influence of health education on the acquisition of knowledge and changes of attitude and control of hypertension was conducted among the elderly from 2 family physician offices of the "California" Polyclinic, in 1997. The MINI-MENTAL-TEST was applied to the 126 aged people who took part in this study. According to the results, 92 of them proved to be apt. After surveying them, it was observed that most of them knew about their disease and were evaluated as fair. They received the same evaluation for their attitude towards the disease. These aspects improved when the aducative technique was used. The number of patients under control increased, too. Recommendations were made.

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

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    García-Ledesma, R.

    2005-02-01

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

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

  3. Conocimientos sobre sexualidad y su influencia en el embarazo en adolescentes

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    Carmina Alexandra García Macías

    2017-06-01

    Full Text Available Introducción: El embarazo en la adolescencia es en la actualidad un problema de salud que genera serias consecuencias personales, sociales y económicas, con repercusión en la salud individual, familiar y colectiva. Objetivo: Identificar los conocimientos sobre la sexualidad y su influencia en el embarazo en la adolescencia. Métodos: Se realizó un estudio observacional analítico, transversal, en un universo de 80 adolescentes de 15 a 19 años del Equipo Urbano de Salud 23 Latacunga, a quienes se les aplicó una encuesta sobre sexualidad y métodos anticonceptivos; los datos fueron procesados en el programa SPSS, el análisis se realizó mediante el test de Chi Cuadrado con un nivel de significación de p<0.05. Resultados: La mayoría de los adolescentes presentó conocimientos insuficientes sobre sexualidad (n=50 62.5%. El inicio de las relaciones sexuales predominó a los 15 años (n=11 13.7%; el uso de métodos anticonceptivos en la primera relación sexual fue bajo (n=30 37.5%; el método anticonceptivo más utilizado fue el condón con un (n=22 27.5%, a continuación, se ubicaron los anticonceptivos naturales.  Conclusiones: Predominó el desconocimiento sobre sexualidad y métodos anticonceptivos, a la vez fue temprano el inicio de la vida sexual con un poco utilización de métodos de anticoncepción.

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

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    Bustillo, Mª A.

    1995-04-01

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

  5. Influencia de la betarraga (Beta vulgaris var. cruenta en el aumento de leucocitos, en ratones

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    Jony Amaro

    2014-01-01

    Full Text Available Introducción: La betarraga es una planta oriunda del Mediterráneo utilizada para fines alimenticios y medicinales. Contiene flavonoides. Objetivos: Determinar la influencia del consumo del extracto de Beta vulgaris var. cruenta en el incremento de leucocitos, en el ratón albino. Diseño: Estudio experimental. Lugar: Bioterio de la Institución Educativa 1182. Material biológico: Veinte ratones albinos de la cepa balb/c, machos, de peso promedio 24 g. Intervenciones: Se formó dos grupos, experimental y control, cada uno de diez ratones. Al grupo experimental se le administró vía oral extracto de Beta vulgaris var. cruenta en dosis de 250 mg/kg, volumen de 2 mL, cada cinco horas durante una semana, alternando con nutrientes, y al grupo control solo se le administró nutrientes. Principales medidas de resultados: Recuento de leucocitos. Resultados: Dentro del periodo de acondicionamiento, se observó un ligero incremento en la media de leucocitos del grupo control (3 681 ± 431,1 frente al grupo experimental (3 579 ± 473,5, cuya diferencia no fue significativa. Luego de administrar al grupo experimental el extracto de Beta vulgaris var. cruenta, alternando con sus nutrientes respectivos, se observó diferencia significativa de la media (7 961 ± 275,4 frente al grupo control (3 693 ± 414,7 (t student p<0,05. Conclusiones: En condiciones experimentales, el consumo del extracto de Beta vulgaris var. cruenta incrementó significativamente el número de leucocitos.

  6. Influencia de la humedad en el ensayo de resistencia de los ladrillos de suelo-cemento

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    Lima, José I.

    1994-02-01

    Full Text Available The article seeks to show the influence of humidity on the compression test of the soil-cement bricks through an adapted experimental design. The equations showing this relation are obtained. The subsequent generalization provides the possibility of making a pattern of correlation of strengths with different test humidities. Thus, the tests could be performed with a given humidity and the strength of the particular specimen for different humidity values could be estimated with a high degree of certainty. This makes possible the comparison of strength between tested elements in different humidity conditions, verification of fulfillment of recommended strength values and their expressing in terms of a basic humidity value, which is what the currently valid Technical Instructions lack.

    A través de un diseño experimental adecuado se pretende mostrar la influencia de la humedad en el ensayo a compresión de los ladrillos de suelo-cemento, obteniendo las ecuaciones que muestran esta relación. Su generalización posterior permitió elaborar una matriz de correlación de las resistencias con las diferentes humedades de ensayo, de forma tal que se pueda ensayar con una humedad dada y estimar la resistencia que tendrá esa muestra para diferentes valores de humedad, con un buen nivel de confianza. Esto posibilita que se puedan realizar comparaciones de resistencia entre elementos ensayados en condiciones desiguales de humedad, verificar el cumplimiento de los valores recomendados de resistencia y referirlos a un valor de humedad base, defecto actual de las Instrucciones Técnicas vigentes.

  7. Asistencia respiratoria mecánica: Influencia de la edad en la evolución

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    Felipe J. Chertcoff

    2011-02-01

    Full Text Available No existe un concepto definido sobre la influencia de la edad en la mortalidad de la asistencia respiratoria mecánica. Realizamos un trabajo prospectivo-observacional para determinar si la edad es un factor independiente de mortalidad de la asistencia respiratoria mecánica. Se incluyeron 200 pacientes internados en la Unidad de Cuidados Intensivos del Hospital Británico de Buenos Aires. Se registraron características y comorbilidades al ingreso, al inicio de la asistencia respiratoria mecánica, complicaciones y evolución en el Hospital y a los 6 meses. Los 200 pacientes incluidos fueron divididos en dos grupos: Grupo 1 (n = 164 menores de 80 años y Grupo 2 (n = 36 de 80 años o más. No hubo diferencias en la mortalidad en la Unidad de Cuidados Intensivos y en el Hospital entre los pacientes menores de 80 años y los de 80 años o más. (55.56% vs. 41.46% y 58.33% vs. 42.68%. La supervivencia a los 6 meses de los = 80 años fue significativamente menor (22.22% vs. 48.17%, p = 0.0051. En el análisis multivariado solamente un APACHE II > 20 (p = 0.0007 o la ausencia de vida autónoma (p = 0.0028 conservaron poder predictivo independiente. Los pacientes añosos que reciben asistencia respiratoria mecánica no presentan una mayor mortalidad por el sólo hecho de ser ancianos. La restricción de los cuidados terapéuticos invasivos no parece justificada por la edad avanzada.

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

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    Jully Calderón S

    2006-10-01

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

  9. Influencia del enfoque teórico en el estilo personal del terapeuta

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    Leandro Martín Casari Cobo

    2013-01-01

    Full Text Available Abstract This research paper aims to study the theoretical and technical influences on therapists backgrounds (PST based on his/her own personal style, and also keeping in mind the common and particular features imposed in their tasks, beyond the scope of their work and the specific requirements they completed for their work. For this research, an PST-Q (Fernandez-Alvarez & Garcia, 1998 questionnaire is applied to a sample of 106 psychotherapists from Argentina. Significant differences in their personal style (PST (between psychoanalytic therapists and psychologists with different theoretical orientation are found. The results are analyzed and future aspects of research are created. Resumen El estilo personal del terapeuta se refiere a características habituales que cada uno impone en su tarea como resultado de su peculiar manera de ser, más allá del enfoque de trabajo que utilice y de los requerimientos específicos que le exija la intervención. El objetivo de este artículo de investigación consistió en estudiar la influencia de la orientación téorico-técnica en el desarrollo del Estilo Personal del Terapeuta (EPT. Para ello, se administró el cuestionario EPT-C (Fernández-Álvarez & García, 1998 a una muestra de 106 psicoterapeutas de Argentina, encontrándose diferencias significativas en las funciones del EPT en los terapeutas psicoanalistas en comparación con los psicólogos de otras orientaciones teóricas. Se analizan los resultados y se plantean futuras líneas de investigación.

  10. INFLUENCIA DEL CULTIVO INTERCALADO EN LA PRODUCCIÓN Y CALIDAD DEL FRUTO DE TOMATE CEREZA

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    Fabricio Rossi

    2013-12-01

    Full Text Available El presente trabajo tiene por objetivo determinar la influencia en la cosecha y calidad de los frutos de Solanum lycopersicum L. (1753 cv. cereza [Lycopersicum esculentum Mill. 1768] (tomate en convivencia con cultivos intercalares de cinco Fabaceae, plantas auxiliadoras en la agricultura y dos tratamientos con y sin residuos de cosecha de Zea mayz L. El estudio fue im- plantado en el Polo Centro Sul, Piracicaba-SP. Brasil, en suelo Argisol rojo-amarillo distrófico. El diseño experimental fue en bloque al azar con cinco repeticiones y ocho tratamientos en con- vivencia con plantas de tomate con:1 Sin residuos de ZEAMA-Zea mayz L.;2 Con residuos de ZEAMA- Zea mayz L. cv.cativerde 2; 3 CANEN- Canavalia ensiformis (L. DC.; 4CRO- JU- Crotalaria juncea L.; 5 MUCPR- Mucuna pruriens (L. DC. cv. arbusto (enana o anã; 6 VIGRA- Vigna radiata L. 7 LUPAL- Lupinus albus L.; 8 VIGUN- Vigna unguiculata (L. Walp. Los resultados mostraron que la producción y calidad de los frutos de tomate fue normal, sin ataque de plagas y no se aplicó ningún agrotóxico. El abono verde, así como la presencia o ausencia de residuos de cosecha de maíz, no interfiere en la temporada de cosecha. En cuanto al análisis de sólidos solubles totales (SST y acidez (pH no difirió entre los tratamientos.

  11. Influencia del estudio personal en la adquisición de conocimientos

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    Josep Nebot-Cegarra

    Full Text Available Introducción. La actividad del docente suele ser la primera influencia formativa que recibe el alumno en el proceso de aprendizaje de un determinado tema, pero se consolida mediante el estudio personal. En el presente trabajo se ha determinado el grado de mejora obtenido tras el estudio personal en la puntuación alcanzada en una serie de cuestiones, que fueron previamente evaluadas justo después de ser enseñadas¹. Material y Métodos. Se efectuó una prueba a 66 alumnos inmediatamente después de realizar una actividad teoricopráctica de la asignatura Biología del Desarrollo y Teratogenia, que la repitieron días después. Se valoró la existencia de diferencias significativas en el grado de mejoría en función de las características de las cuestiones planteadas y del tiempo transcurrido entre ambas pruebas. Resultados. Hubo mejora en todos los tipos de cuestiones siendo significativa para las cuestiones en que los alumnos precisaron durante la sesión docente una actitud más activa que aquellas otras en que solamente debían observar. De estas últimas mejoraron más las de percepción auditiva. En las respuestas que requerían nombrar, la mejora significativa fue inversamente proporcional a la complejidad de los términos, pero los mejores resultados se obtuvieron en los términos con dificultad fonética alta. Los días transcurridos entre las pruebas no influyeron significativamente en los incrementos de la nota global. Conclusiones. El estudio personal permite una mejora general en la comprensión de los contenidos, independientemente de su grado de dificultad en el aprendizaje a corto plazo.

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

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    Julio VERA VILA

    2009-11-01

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

  13. Influencia de los bioplaguicidas en los parámetros de calidad de Calendula officinalis L. y Matricaria recutita L.

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    Sánchez Govín, Ester; Rivera Amita, María Magdalena; Carballo Guerra, Caridad

    2010-01-01

    INTRODUCCIÓN: Calendula officinalis L. y Matricaria recutita L. son dos especies medicinales de gran importancia económica y social en Cuba, su cultivo con frecuencia anual se ha visto afectado por la aparición de plagas y enfermedades, con el deterioro del rendimiento de masa vegetal y en su calidad. OBJETIVOS: determinar la influencia de los bioplaguicidas en los parámetros de calidad de Calendula officinalis L. y Matricaria recutita L. MÉTODOS: las drogas vegetales, fueron sometidas a trat...

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

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    Casas Lloret, Jara

    2015-01-01

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

  15. Influencia de los estilos de crianza en el desarrollo de conductas adictivas hacia el consumo de drogas

    OpenAIRE

    Sarabia Cadaya, Eva María

    2015-01-01

    Dado que el consumo de drogas supone un importante problema a nivel social, y la prevalencia del mismo en la adolescencia es significativamente elevada, el propósito fundamental de este proyecto ha sido destacar la influencia que ejerce la familia, en general, y los estilos parentales, en particular, sobre los hijos en el desarrollo de conductas adictivas hacia las drogas. Además de hacer referencia a la investigación de Baumrind (1971,1991), pionera en los estudios sobre estilos parent...

  16. Influencia del estrés académico en el sistema binocular en universitarios de la UVA

    OpenAIRE

    López Gómez, Alejandra

    2017-01-01

    Objetivo: El estrés visual, tras trabajo prolongado en cerca, produce modificaciones en el sistema binocular. Esta hipótesis ha sido poco contrastada experimentalmente. El objetivo principal es medir la influencia del estrés académico en estudiantes universitarios de la UVA mediante la medida de la foria. Métodos: Se ha medido la foria en 22 estudiantes, con su corrección habitual, antes y después de un examen, mediante tres métodos: técnica de la varilla de Maddox, técnica de Von Graefe y...

  17. La influencia del género en los estilos de liderazgo y dirección

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    García Ruiz, Luna

    2013-01-01

    Este Trabajo Fin de Máster (TFM) pretende llevar a cabo un análisis de la influencia del género en los estilos de liderazgo y en los estilos de dirección empleados por los directores/as que ocupan cargos de responsabilidad, a través de la revisión y estudio de diversas publicaciones. En primer lugar, y con el fin de poder llegar a concluir si el género puede ser un factor influyente en los estilos de liderazgo y dirección, hemos tratado de establecer a través de las definiciones aportadas ...

  18. Estudio descriptivo de la influencia del inglés en la prensa mexicana del siglo XIX

    OpenAIRE

    Vázquez Amador, María

    2015-01-01

    L a prensa es reflejo de la realidad vivida en un determinado periodo de tiempo . Este artículo pretende mostrar la influencia de la lengua inglesa en la mexicana a través del análisis de los anglicismos localizados en diversos periódicos publicado s en México durante el siglo XIX . Asimismo se tratará de comprobar la e volución de estas voces a nivel formal y semántico con el fin de determinar si permanecieron y se ada...

  19. Influencia que tienen los programas de televisión infantil en los argumentos del juego simbólico

    OpenAIRE

    Jácome R., María Esther

    2004-01-01

    La influencia negativa de los programas televisivos dirigidos ó no a niños de 4 a 5 años determinan los argumentos del juego infantil, esta situación se evidencia en las repetidas manifestaciones de agresividad en el entorno escolar y familiar; en el uso de términos despectivos que descalifican y ridiculizan a compañeros y amigos; en los argumentos de conversación frente al juego; en el rechazo a las actividades físicas que impliquen movimiento; en la asunción de roles y postur...

  20. El delito de tráfico de influencias en la jurisprudencia de la Corte Suprema de Justicia

    OpenAIRE

    Piedrahita Jaramillo, Renán

    2012-01-01

    El presente ensayo está dirigido al estudio desde la jurisprudencia del delito de tráfico de influencias (arts. 411 y 411 A). La justificación del estudio propuesto está dada por la necesidad de mirar la parte especial del Código Penal, en tanto que la mayoría de la doctrina nacional se ha interesado por el estudio de su parte general, recabando en los institutos que conforman el injusto penal y el tipo subjetivo, entre otros temas, sin mirar la necesidad de sentar las bases de interpretación...

  1. El liberalismo económico de la escuela de Salamanca y su influencia en el desarrollo institucional y organizacional

    OpenAIRE

    Vargas-Hernández, José G.; Castillo Girón, Víctor Manuel

    2017-01-01

    El objetivo de este trabajo es analizar la influencia que tiene el liberalismo económico de la llamada escuela de Salamanca en el desarrollo de las instituciones y organizaciones de su época. Se concluye que toda esta orientación de los teólogos morales de la escuela de Salamanca metidos a economistas, tratando asuntos de la economía, tenían como fi nalidad lograr un desarrollo institucional y organizacional que responde a las demandas de la época. Contrariamente al liberali...

  2. Influencia de algunas variables en la biosorción de plomo con residuos agrícolas

    OpenAIRE

    Hernáinz Bermúdez de Castro, Francisco; Blázquez García, Gabriel; Calero de Hoces, Mónica; Martín-Lara, Mª Ángeles

    2008-01-01

    En este trabajo se ha estudiado la biosorción de plomo presente en medios acuosos utilizando como sólidos sorbentes hueso de aceituna, alpeorujo y ramón del olivo, analizando la influencia sobre el proceso del pH, concentración de biosorbente, tamaño de partícula y tiempo de contacto. Los resultados muestran que en medios muy ácidos no se produce retirada de plomo con ninguno de los sólidos, aumentando el porcentaje de plomoretirado a medida que se eleva el pH del medio hastaalcanzar un valor...

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

    OpenAIRE

    Cira de Pelekais; Angel Nava; Luis Tirado

    2006-01-01

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

  4. Influencia del evento el niño-oscilacion del sur sobre las precipitaciones en cinco ciudades del litoral ecuatoriano

    OpenAIRE

    Espol; Rodriguez Aguilar, Jose Antonio; Luna Rodriguez, Javier Alejandro

    2017-01-01

    La investigación se realizó con el objetivo de evaluar la influencia del fenómeno enos, caracterizado por los índices oni e icen, sobre las precipitaciones ocurridas en el período de 1975-2016 en ciudades del litoral ecuatoriano, con la finalidad de que contribuya al diseño de lineamientos para mejorar la respuesta de la población ante la posible presencia del evento Guayaquil MAGISTER EN CAMBIO CLIMATICO

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

    DEFF Research Database (Denmark)

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

    2011-01-01

    El flujo de aire en el interior de un local generado con un sistema de ventilación y difusión de aire puede verse afectado por las cargas térmicas internas del local. En este trabajo, se estudia la influencia de las cargas térmicas internas debidas a personas en el flujo de aire interior de un lo...... difusor textil de baja velocidad. Los resultados obtenidos pueden resultar de interés para validar las predicciones obtenidas a partir de modelos numéricos de difusores....

  6. Plan de gestión integral del riego en la zona de influencia de la acequia de Tabacundo

    OpenAIRE

    Ochoa Mármol, Alexis Mauricio

    2013-01-01

    El presente producto consistió en la elaboración de plan integral de riego de la acequia Tabacundo el cual consta de un diagnóstico situacional en la zona de influencia, identificación de problemas, análisis del medio interno y externo, identificación de actores, planteamiento de la misión, visión, objetivos y estrategias para mejorar la gestión del agua de riego en la acequia Tabacundo dentro de los ámbitos socio-organizativo, técnico, económico productivo y ambiental. Este producto se ...

  7. INFLUENCIA DE LA MADERA JUVENIL DE PINO RADIATA SOBRE LAS PROPIEDADES MECÁNICAS DE TABLEROS OSB

    OpenAIRE

    PECHO,Robert; ANANIAS,Rubén A; BALLERINI,Aldo; CLOUTIER,Alain

    2004-01-01

    En este trabajo se estudia la influencia de la madera juvenil de pino radiata (Pinus radiata D. Don) sobre las propiedades mecánicas de tableros de hojuelas orientadas OSB. La madera para los ensayos es recogida de 10 árboles en pié de 26 años creciendo en plantaciones manejadas de la Octava región, Chile. La determinación de madera juvenil se realiza observando la variación radial de los anillos de crecimiento de la madera, usando un analizador de anillos en base a rayos X. Los detalles de l...

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

    OpenAIRE

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

    1983-01-01

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

  9. Influencia de la solidez en un aerogenerador VAWT con rotor H-Darrieus y perfiles simétricos

    OpenAIRE

    Alonso Gómez, Álvaro

    2016-01-01

    Mediante el empleo de la Mecánica Computacional de Fluidos, se estudia la influencia que tiene el grado de solidez en el comportamiento de un aerogenerador. Se estudia un aerogenerador de eje vertical con rotor H-Darrieus y tres perfiles simétricos en el que se analizan tres grados de solidez diferentes, generándose por lo tanto tres modelos, para cada uno de los cuales se obtiene la curva de rendimiento correspondiente. Para construir la curva se van realizando simulaciones a diferentes ve...

  10. Influencia del programa preventivo promocional en salud escolar y el desarrollo de capacidades en higiene personal en estudiantes

    OpenAIRE

    Salvador Esquivel, Nilda Elizabeth

    2015-01-01

    Objetivo: Determinar la influencia del programa preventivo promocional en salud escolar en el desarrollo de capacidades en higiene personal en estudiantes del primer grado de educación primaria de la Institución Educativa N°1211 José María Arguedas, Santa Anita, 2013. Material y métodos: Estudio cuantitativo, de tipo cuasi experimental, de corte transversal, prospectivo. La población fue de 56 estudiantes del 1er. grado A (grupo experimental) y B (grupo control). El estudio tuvo una duraci...

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

    OpenAIRE

    González Guerrero, Laura

    2011-01-01

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

  12. Influencia de la composici??n del medio de cultivo sobre la producci??n de pigmento por Streptococcus agalactiae

    OpenAIRE

    Carazo Carazo, Concepci??n

    1995-01-01

    Se ha estudiado la influencia de la composici??n del medio de cultivo sobre la producci??n de pigmento por s. agalactiae partiendo de un medio de cultivo dise??ado para tal finalidad (new granada medium), eliminando uno a uno los componentes incluidos en su formulaci??n original. Almid??n, proteosa peptona (difco), suero, fosfatos y metrotexato influyen de forma importante en la formaci??n y/o visualizaci??n del pigmento producido por este microorganismo. Se ha determinado que la fracci??n de...

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

    OpenAIRE

    LÓPEZ HERREROS, ANDRÉS

    2013-01-01

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

  14. Influencia de costos totales en los presupuestos de ventas en MYPEs confeccionistas textiles en Los Olivos 2016

    OpenAIRE

    Guevara Hermoza, Luis Alberto

    2017-01-01

    Esta investigación tiene el interés de demostrar la influencia de los costos totales en el presupuesto de ventas de productos terminados en las empresas MYPEs textiles de confecciones. Estas empresas son dirigidas por sus dueños quienes no cuentan o tienen escasa formación para los negocios y, en consecuencia, enfrentan problemas sin herramientas adecuadas para resolverlos. Usualmente cuando el director de la MYPE se encuentra con poco efectivo o sus ganancias son muy reduci...

  15. Influencia de la lactancia materna en la prevención de hábitos bucales deformantes

    OpenAIRE

    Fuguet Boullon, Julia R; Betancourt García, Ana Ibis; Ochoa Jiménez, Lourdes; González Pérez, Marlén; Crespo García, Arelis; Viera Rodríguez, Dianeya

    2014-01-01

    Introducción: la lactancia materna constituye uno de los pilares fundamentales de la promoción de salud y la prevención de numerosas enfermedades. Objetivo: identificar la influencia de la lactancia materna exclusiva con la presencia de hábitos bucales deformantes. Métodos: se realizó un estudio observacional descriptivo de corte transversal en niños 3-5 años de ambos sexos, pertenecientes al círculo infantil “20 primaveras”, del municipio de Cienfuegos, en el período comprendido entre septie...

  16. Tiempo y venta: la influencia del tiempo de espera en la satisfacción con el servicio

    OpenAIRE

    Gavilán Bouzas, Diana

    2012-01-01

    Trabajo de investigación sobre la influencia de las esperas que tienen lugar antes, durante y/o al finalizar los proceso de demanda de bienes o servicios. Partiendo de la hipótesis teórica de que el efecto perjudicial de la espera solo se produce cuando la intensidad de la pérdida excede la ganancia de utilidad que puede reportar la espera, se establecen tres efectos posibles de la espera: satisfacción, indiferencia, e insatisfacción; de los cuales, los dos primeros podrían asimilarse a la ca...

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

    OpenAIRE

    García-Séiquer, Mercedes

    2013-01-01

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

  18. Evaluation of the efficiency of a tubular digester in the reduction of organic load of biogas from swine wastes; Avaliacao da eficiencia de um biodigestor tubular na reducao da carga organica de biogas a partir de dejetos de suinos

    Energy Technology Data Exchange (ETDEWEB)

    Angonese, Andre Ricardo [Universidade Estadual do Oeste do Parana (UNIOESTE), PR (Brazil)], Email: aangonese@yahoo.com.br; Campos, Alessandro Torres [Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, MG (Brazil)], Email: atcampos3@yahoo.com.br; Moreno Palacio, Soraya [Universidade Estadual de Maringa (UEM), PR (Brazil); Szymanski, Nayara [Universidade Estadual do Oeste do Parana (UNIOESTE), PR (Brazil). Curso de Quimica

    2006-07-01

    The purpose of this study was to assess the efficiency of the anaerobic biological treatment systems in the reduction and stabilization of biodegradable organic matter of swine waste. The experiment was carried out at Vale dos Ipes Farm, located in the city of Ouro Verde do Oeste, in the Western of Parana State. One finishing phase swine unity containing 600 animals was monitored from January to June 2005. The system is composed by one steel digester with capacity for 50 m{sup 3}. The swine barn cleaning is performed by dry scratching on a daily basis. The generated residues flow by gravitation through ducts towards the digester. The duration of the hydraulic retention period was 12 days. The residues analysis was performed by means of sampling at the entrance and way out of the digester. The following parameters were analyzed: pH, DBO{sub 5}, DQO, total solids, total volatile solids, total fixed solids, total nitrogen e ammonia, potassium, total phosphate, average of biogas production. The results suggested that the anaerobic biological treatment system was efficient for reducing and stabilizing the organic matter resulted from the swine wastes. Expressive reductions of DBO, DQO, ST and SVT of 76, 77, 43 and 59% respectively, were obtained for the effluent originated by the digester. The average daily production of biogas during the analyzed period was 31, 5 m{sup 3}. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Nunes, Thaise Cristine Fernandes

    2009-07-01

    The consumption of collard greens (Brassica oleracea cv. acephala) and broccoli (Brassica oleracea L. var. italica) has been inversely associated with morbidity and mortality caused by degenerative diseases. These species are highly consumed in Brazil, which enables its use as minimally processed (MP). The growing worldwide concern with the storage, nutritional quality and microbiological safety of food has led to many studies aimed at microbiological analysis, vitamin and shelf life. To improve the quality of these products, radiation processing can be effective in maintaining the quality of the product, rather compromising their nutritional values and sensory. The aim of this study was to evaluate the effectiveness of gamma radiation from {sup 60}Co at doses of 0, 1.0 and 1.5 kGy on the reduction of microbiota in these plants, and analyze their nutritional and sensory characteristics. The methodology used in this study was microbiological analysis, colorimetric analysis, analysis of phenolic compounds, antioxidant analysis and sensory analysis. The microbiological analysis showed a decrease in the development of populations of aerobic microorganisms, psychotropic and yeast and mold with increasing doses of radiation. The sensory analysis showed no significant difference between different times of cooking analyzed. The analysis of phenolic compounds, significant differences between the samples, suggesting that with increasing dose of irradiation was an increase in the amount of phenolic compounds found in broccoli and collard greens MP. It can be observed that the sample of control collard greens showed high antioxidant activity and for the samples treated by irradiation was a decrease of percentage. In contrast the samples of broccoli show an increase in the rate of scavenging DPPH with increase of the dose of radiation. The colorimetric analysis revealed that for samples of MP collard greens and broccoli foil of no significant differences, but for samples of stems of broccoli significant difference on the yellowing during storage. It is concluded that the processing of collard greens and broccoli butter by gamma radiation may be a viable alternative to the industry, since there was a reduction of the population of microorganisms, without changes in the sensory qualities and with minimum changes in the characteristics that confer antioxidant power. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Morais, Aline Viana de

    2015-07-01

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

  1. Evaluation of synergistic effect in vacuum pack, refrigeration and irradiated treatments of minimally processed cassava; Avaliacao do efeito sinergistico da embalagem a vacuo, irradiacao e refrigeracao da mandioca minimamente processada

    Energy Technology Data Exchange (ETDEWEB)

    Pedroso, Bianca Maria

    2005-07-01

    Cassava is cultivated almost all over the world and it is considered one of the most important nutritious sources of calories in the human diet. Cassava is a viable food against starvation in several poor areas of the world because it is an extremely resistant culture and may reach satisfactory economical yield. We utilized vacuum packed industrialized cassava irradiated with 0,1 kGy, 3kGy and 5kGy and stored under refrigeration for 1, 21, 30 and 50 days. Our objective was to analyse the synergistic effect of vacuum packing, irradiation and refrigeration on the preservation of minimally processed cassava. The samples were analyzed for pH, acidity, weight, humidity, texture and color. The irradiation did not affect the chemical characteristics of the cassava. Neither the pH nor the acidity, the most relevant variables to verify deterioration in cassava, presented significant alterations during the period of storage. Comparing the irradiated treatments, the dose of 1kGy and 3kGy affected the physic-chemical characteristics of the cassava the least during the period of storage and refrigeration for 50 days; the doses of 1kGy,3kGy and 5kGy scored the highest rates the sensorial analysis during the period of storage for 21 days. (author)

  2. 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)

  3. Evaluation of the potentiality of the use of high-carbon microsilica as a pozzolanic material; Avaliacao da potencialidade da utilizacao de microssilica de alto teor de carbono como material pozolanico

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, R.L.S.; Pederneiras, C.M.; Costa, T.C.S.; Silva, C.H.R.B., E-mail: ruan_landolfo@hotmail.com [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil); Anjos, M.A.S. [Instituto Federal da Paraiba (IFPB), PB (Brazil); Nobrega, A.K. [Universidade Federal Rural do Semi-Arido (UFERSA), Mossoro, RN (Brazil)

    2016-07-01

    Supplementary Cementitious Materials reduce the production of clinker, which minimizes the environmental impact of cement production and the generation of industrial waste, also improve mechanical behavior and durability. Thus, this article aims to evaluate the potential use of microsilica with high content of carbon as pozzolanic material, based on the requirements of ISO 12653 (ABNT, 2015). The techniques of X-ray fluorescence (XRF), X-ray diffraction (XRD) and compressive strength of mortar of lime and cement (at 7 and 28 days, respectively) were used to evaluate the pozzolanic of the microsilica as a mineral addition. The results indicated that the microsilica has a high amorphous silicon dioxide percentage structure. In the DRX could be possible to analyze the formation of CSH, justifying the good results of mechanical strength, especially with cement. Thus, the mineral admixture used in this research can be considered as a pozzolanic material. (author)

  4. 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)

  5. Resistance evaluation expanded perlite the leaching acid: variation of parameters concentration, time and leaching agent; Avaliacao da resistencia da perlita expandida a lixiviacao acida: variacao dos parametros concentracao, tempo e agente lixiviante

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, J.M.F. de; Damasceno Junior, E.; Oliveira, E.S.; Fernandes, N.S., E-mail: janielequimicaufrn@gmail.com [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Instituto de Quimica. Laboratorio de Quimica Analitica e Meio Ambiente

    2016-07-01

    The expanded perlite is an amorphous aluminosilicate which presents in its composition about 75.0% silicon oxide (SiO2), also having other species in the composition as oxides of some metals. Silicas and silicates have been used in the environmental field, in relevant anti-corrosive activity. In this context, materials that exposes too many highly acidic media, require preservation against this type of wear, as this type of damage causes a great financial loss, thereby requiring low-cost, abundant materials, non-toxic and easy to purchase as some silica coating. The study evaluated the perlite expanded resistance against an acid leaching process. With undeniability the use of strong acids and different working conditions were not able to remove the oxides present on the expanded perlite sample, thus demonstrating the high strength of the expanded perlite against acid attacks. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-07-01

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

  7. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

    Paredes, Wilber Edison Bernaola

    2017-11-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2003-07-01

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

  10. 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)

  11. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

    Fukurozaki, Sandra Harumi

    2006-07-01

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

  13. Inorganic composition determination and evaluation of the biological activity of Peperomia pellucida in the Aspergillus flavus growth; Estudo da composicao inorganica e avaliacao da atividade biologica de Peperomia pellucida no crescimento de Aspergillus flavus

    Energy Technology Data Exchange (ETDEWEB)

    Sussa, Fabio Vitorio

    2011-07-01

    In recent decades, there has been a great advancement in research in developing drugs from plants. Nevertheless, little significant care exists in the literature about the stable concentration of elements, as well as the activity concentration of '2{sup 38}U and {sup 232}Th decay products in plants used for this purpose in Brazil. The presence of stable elements and radionuclides in plants constitutes the pathway for their migration to humans, via uptake of tea or remedies made with medicinal herbs. Peperomia pellucida, whose popular name is 'erva de jabuti', is a plant known by its medicinal usages, such as healing and analgesic properties plus antibacterial and antifungal activities against food fungi. In this study, the elemental composition of Peperomia pellucida and surrounding soil samples collected in the Botanical Garden in Rio de Janeiro was determined; the elemental concentration in the alcoholic extract and infusion processes of dry plants was also determined. The elemental concentration of As, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn was determined in the leaves, aerial parts, including leaves, stems and roots of Peperomia pellucida, in their extracts obtained by maceration and infusions and in the surrounding soil by the Instrumental Neutron Activation Analysis (INAA). The analytical methodology used to determine the elements Cd, Hg and Pb was the Atomic Absorption Spectrometry (AAS); the activities of {sup 226}Ra, {sup 228}Ra and {sup 210}Pb were carried out by gross alpha and beta counting, after radiochemical separation. The quality of the obtained results was assured by the analyses of the certified reference materials IAEA-336 Lichen, IAEA-Soil-7, IAEA-326 Radionuclides in soil, NIST 1515 Apple Leaves and NIST 1542 Peach Leaves. The relative standard deviations and the relative errors obtained in these analyses indicated good precision and accuracy of the results. The essential oil, ethanolic and hexane extracts of Peperomia pellucida were tested for antifungal activity against Aspergillus flavus in vitro on Petri plates. The antifungal activity was based on the inhibition zone and IC{sub 50} values against the pathogen on Petri plates assays. Also, the essential oil chemical composition was determined by GC-MS. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

    Rocha, Rosiana Rocho

    2015-07-01

    Air pollution has been a frequent topic of research, due to the effects that it can cause on the health of living organisms, environment and climate. In order to identify pollution sources and their effects, biomonitoring has been studied due to its low cost and possibility of sampling in wide geographic areas. In this study for passive biomonitoring of air pollution levels at the Cidade Universitaria Armando Salles de Oliveira (CUASO), University of Sao Paulo campus, epiphytic lichens of Canoparmelia texana species were used. The lichens collected from tree barks at different sampling sites in the CUASO were cleaned, freeze-dried and ground for analyses. Lichen samples were analyzed by X - ray fluorescence spectrometry (XRFS) and neutron activation analysis (NAA). For XRFS, cylindrical pellets of samples were prepared to determine As, Br, Ca, Cl, Cr, Cu, Fe, K, Mn, Rb, S, Sr and Zn. For NAA, lichen sample aliquots along with synthetic elemental standards were irradiated both for short and long periods at the IEA-R1 nuclear research reactor. The induced activities were measured by a gamma ray spectrometer to determine As, Br, Ca Cd, Cl, Co, Cr, Cs, Cu, Fe, K, La, Mg, Mn, Rb, Sb, Sc, Se, U, V and Zn. The precision and accuracy of the results were evaluated by the analysis of certified reference materials (MRCs). Their results of relative errors and standard deviations were below 15% for most of the elements. The standardized difference or En score values were lower than |1| indicating satisfactory results. Replicate analyses of a lichen sample by XRFS and NAA, indicated good homogeneity of the sample for the elements determined. The lichen results showed that the mean concentrations of As, Br, Ca, Cd, Co, Cr, Cs, Rb, Sb, Se and U were higher in samples from CUASO than those from regions considered unpolluted. For Fe, K, La, S, V and Zn, they were of the same order of magnitude. The correlation study between the elements showed high correlation (r > 0.7) for elements originated from the natural and anthropogenic sources. The principal component analysis (PCA) applied to the results showed six major components, where components 1 and 2 accounted for 52.9 % of the variance of the data. Enrichment factors (EF) calculated for the results of lichens from CUASO and a region considered unpolluted were EF> 1 for most elements, showing that these elements may be from anthropogenic sources. From the results obtained in this study can be concluded that the elements found in lichens from CUASO can be originated from sources such as resuspension of soil particles and anthropogenic emissions. (author)

  15. Evaluation of image quality versus doses in service of mammography of Belo Horizonte, MG, BR; Avaliacao da qualidade da imagem versus doses em servicos de mamografia de Belo Horizonte

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, M.; Nogueira, M.S.; Guedes, E. [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil). Seguranca Nuclear; Andrade, M.C. [Superintendencia Estadual de Vigilancia Sanitaria, Belo Horizonte, MG (Brazil); Peixoto, J.E. [Universidade Federal, Rio de Janeiro, RJ (Brazil). Faculdade de Medicina. Radiologia; Silva, V.L.S.; Borges, J.C. [Vigilancia Sanitaria da Secretaria Municipal de Saude de Belo horizonte (VISA/PBH), MG (Brazil)

    2004-07-01

    Cancer is the second cause of death for Brazilian women and breast cancer is the most common neoplasm amongst women. Mammography is an essential tool for diagnosis and early detection of this disease. In order to be effective, the mammography must be of good quality. This study sought to evaluate the radiation protection and quality of 37 services out a total of 82 mammography facilities existing in the city of Belo Horizonte, Brazil. Two instruments were used: a proposed evaluation protocol of the Health Surveillance -VISA and a protocol for evaluation of image quality. Of the 37 services who completed the study, none was achieved 100% conformity in image quality. The results of radiation protection requirements according to the VISA protocol bore close relation to final image quality, a central issue for early cancer detection (p>0.05)

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

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Fernanda Leite da

    2013-07-01

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-10-26

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

  18. Profit of solar energy for salting and drying of a brazilian fish Colossoma mitrei Berg, 1895; Utilizacao da energia solar para avaliacao da salga e secagem do pacu, Colossoma mitrei Berg, 1895

    Energy Technology Data Exchange (ETDEWEB)

    Sales, Ronaldo de Oliveira [1Ceara Univ., Fortaleza, CE (Brazil). Centro de Ciencias Agrarias; Beirao, Luiz Henrique [Santa Catarina Univ., Florianopolis, SC (Brazil). Dept. de Ciencias e Tecnologia de Alimentos

    1986-12-01

    This paper studied a simple method for processing dried-salted `pacu` fish. The average weight in relation to total weight was 58,6% and the result came very close to the average of weight of other dried salted fishes, when treated in same way. The main purpose of this process was to reduce the long time expanded by the conventional process, allowing to reduce the humidity of the dried-salted product from 56 to 43,5% in 28 hours only. (author) 20 refs., 3 figs., 8 tabs.

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

    Energy Technology Data Exchange (ETDEWEB)

    Caccuri, Lilian Saueia

    2007-07-01

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

  20. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

    Campos, Luciana Tourinho

    2006-02-15

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

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2011-10-26

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

  3. 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)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2014-04-15

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

  5. Evaluation of natural rubber from IAC series clones by solid state {sup 13}C NMR; Avaliacao da borracha natural de clones da serie IAC por {sup 13}C RMN no estado solido

    Energy Technology Data Exchange (ETDEWEB)

    Martins, Maria A.; Moreno, Rogerio M.B.; Goncalves, Paulo S. [Instituto Agronomico de Campinas, SP (Brazil). Centro de Cafe e Plantas Tropicais. Programa Seringueira]. E-mails: paulog@iac.sp.gov.br; mariaalice@cnpdia.embrapa.br; Forato, Lucimara A.; Colnago, Luiz A.; Mattoso, Luiz H.C. [EMBRAPA Instrumentacao Agropecuaria, Sao Carlos, SP (Brazil)]. E-mail: colnago@cnpdia.embrapa.br; forato@cnpdia.embrapa.br; rogerio@cnpdia.embrapa.br; mattoso@cnpdia.embrapa.br; Job, Aldo E. [Universidade Estadual Paulista (UNESP), Presidente Prudente, SP (Brazil). Departamento de Fisica, Quimica e Biologia

    2005-07-01

    Agronomic Institute (IAC) and EMBRAPA Agricultural Instrumentation (EMBRAPA/CNPDIA) have been studied Hevea species in order to increase the production of the natural rubber and to develop new clones more appropriated to Brazil's soil and climate. Structural characterization of natural rubber [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. - Arg.] from new clones of the IAC series (IAC 300, 301, 302, 303, 35, 40, and 56) and from RRIM 600 clone has been studied by high-resolution solid-state {sup 13}C NMR and by single pulse technique. The results have shown that the application of solid-state {sup 13}C NMR using the single pulse technique is a powerful tool to study natural rubber. The spectra obtained through this technique confirmed that natural rubber from all clones studied are cis-1,4-polyisoprene (author) form.(author)

  6. Dosimetric evaluation of spectrophotometric response of alanine gel solution for gamma, photons, electrons and thermal neutrons radiations; Avaliacao dosimetrica da resposta espectrofotometrica da solucao gel de alanina para radiacao gama, de fotons, de eletrons e de neutrons termicos

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Cleber Feijo

    2009-07-01

    Alanine Gel Dosimeter is a new gel material developed at IPEN that presents significant improvement on Alanine system developed by Costa. The DL-Alanine (C{sub 3}H{sub 7}NO{sub 2}) is an amino acid tissue equivalent that improves the production of ferric ions in the solution. This work aims to analyse the main dosimetric characteristics this new gel material for future application to measure dose distribution. The performance of Alanine gel solution was evaluated to gamma, photons, electrons and thermal neutrons radiations using the spectrophotometry technique. According to the obtained results for the different studied radiation types, the reproducibility intra-batches and inter-batches is better than 4% and 5%, respectively. The dose response presents a linear behavior in the studied dose range. The response dependence as a function of dose rate and incident energy is better 2% and 3%, respectively. The lower detectable dose is 0.1 Gy. The obtained results indicate that the Alanine gel dosimeter presents good performance and can be useful as an alternative dosimeter in the radiotherapy area, using MRI technique for tridimensional dose distribution evaluation. (author)

  7. 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)

  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. 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)

  10. Evaluation of the dose absorbed by the thyroid of patients undergoing treatment of Graves disease;Avaliacao da dose absorvida pela tireoide de pacientes submetidos ao tratamento da doenca de Graves

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Tiago L.; Filho, Joao A. [Universidade Catolica de Pernambuco (UNICAP), Recife, PE (Brazil). Dept. de Fisica; Silva, Jose M.F. da [Universidade Federal de Pernambuco (DEN/UFPE), Recife, PE (Brazil). Dept. de Energia Nuclear

    2009-07-01

    The radioiodine is used as complementary treatment of thyroid cancer and as first choice for the treatment of Graves' disease, being efficient, safe and easy administration, but without there is a protocol defined. This work was evaluated the thyroid absorbed dose from its mass and maximum uptake of I-131 obtained in the examination of diagnostic radiology of radiotherapeutic patients undergoing treatment of Graves' disease. Based on the results, it is observed that the thyroid absorbed dose, as much in terms of mass as the maximum uptake of I-131 for different values of administered activity, varies significantly. The analysis of these parameters is an excellent indicator for the pre-define quantity of radionuclide that is administered to the patient in terms of the radiation dose required to achieve an efficient therapeutic treatment. Moreover, it was observed that the thyroid absorbed dose depends on the degree of pathology of the disease, its mass and of the maximum uptake of I-131. (author)

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

    Energy Technology Data Exchange (ETDEWEB)

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

    2005-07-01

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

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

    Directory of Open Access Journals (Sweden)

    Renato Aparecido Souza

    2006-12-01

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

  13. Astigmatismo interno : epidemiología, clasificación e influencia en los resultados de la cirugía refractiva corneal

    OpenAIRE

    Gargallo Martínez, Beatriz

    2015-01-01

    Objetivos: Trabajos previos muestran que la corrección astigmática mediante cirugía láser en sujetos con grandes cantidades de astigmatismo interno (AI) es menos predecible. La influencia exacta del AI en los resultados de la cirugía refractiva, así como la exactitud en su medida o su relación con el resto de estructuras ópticas del ojo se desconoce. Ésta tesis pretende estudiar y analizar la epidemiología del AI y su influencia en los resultados de la cirugía refractiva. Si aumentamos el ...

  14. Influencia de la televisión en los niños Análisis a través del dibujo infantil

    OpenAIRE

    Jiménez Yanez, César; Mancinas Chaves, Rosalba

    2013-01-01

    Este artículo presenta los resultados de un estudio sobre la influencia de la televisión en los niños para el cual se utilizó el dibujo infantil como instrumento de análisis. La televisión, su influencia y el impacto que causa en diversos sectores de la población es un tema bastante estudiado desde distintas disciplinas, en este trabajo el uso del dibujo como herramienta y mecanismo de análisis, es la novedad. El dibujo infantil es un medio de expresión que aporta nuevos elementos para la dis...

  15. La administración educativa y su influencia en el rendimiento académico de los alumnos del nivel secundario en Puno

    OpenAIRE

    Quispe Sairitupa, Míriam Edith

    2011-01-01

    La tesis titulada "La Administración Educativa y su Influencia en el Rendimiento Académico de los Alumnos del Nivel Secundario en Puno" se desarrolló en la ciudad de Puno en el año lectivo 2009, con ocho instituciones educativas del nivel secundario. El objetivo fue determinar la influencia que ejerce la administración educativa en el rendimiento académico de los estudiantes del nivel secundario de la ciudad de Puno, así como establecer el rendimiento académico de los estudiantes cuya direcci...

  16. A Governança Corporativa Influencia a Eficiência das Empresas Brasileiras?

    Directory of Open Access Journals (Sweden)

    Igor Bernardi Sonza

    2014-05-01

    Full Text Available O conflito de interesses entre executivos e proprietários é uma questão amplamente difundida na academia, já documentada em 1932 por Berle e Means, trazendo à tona o clássico conflito de interesses entre agente e principal discutido pela Teoria da Agência. A premissa por trás da governança corporativa é que as pessoas que estão dentro das corporações não necessariamente agem visando o melhor para os provedores de fundos. Partindo deste pressuposto, o trabalho em questão visa verificar a influência dos aspectos de governança corporativa na eficiência das empresas de capital aberto brasileiras. O estudo une técnicas de otimização estática através de Análise Envoltória de Dados (DEA para identificar a eficiência das empresas de capital aberto, com Dados em Painel para identificar a influência da governança corporativa na eficiência das empresas. Os dados foram coletados manualmente dos relatórios 20-F da Security Exchange Commission (SEC das empresas brasileiras que possuem American Depositary Receipts (ADRs, já que a base de dados não está disponível, no Brasil, de uma forma completa. Grande parte das hipóteses foi confirmada, evidenciando as condições particulares das finanças corporativas no Brasil no que tange a Governança Corporativa. A incipiência do mercado de capitais brasileiro é percebida em várias análises, ressaltando que o histórico do sistema corporativo brasileiro é um dos limitantes da eficiência das empresas. As condições que prevalecem são: (i alta sobreposição propriedade-direção; (ii conselhos de administração de baixa efetividade; (iii em grupos familiares, os papéis dos acionistas, dos conselhos e da direção não são bem definidos; (iv existe pouca clareza quanto à relação benefício-custo da boa governança; (v baixa eficácia dos conselhos de administração; e (vi indícios de conflitos de interesses, relativizados por incentivos explícitos e implícitos.

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

    Directory of Open Access Journals (Sweden)

    CARLOS ELÍAS

    2002-01-01

    Full Text Available En este estudio se ha intentado detectar la influencia de las revistas de impacto, en las que mayoritariamente publican los científicos, en el periodismo especializado y en la ciencia actual. He analizado, sobre todo, el caso español, pero considero que sus conclusiones pueden extenderse al resto de los países. Al margen de que se demuestra la absoluta preponderancia de revistas como Nature y Science (el 45% de la información sobre ciencia de científicos extranjeros que publican los diarios generalistas procede de estas revistas, también se analizan las influencias de la estrategia de comunicación mediática de los gabinetes de prensa de estas publicaciones en la ciencia. Se ha estudiado, especialmente, la preponderancia del idioma inglés y la escasa relevancia del español, así como las consecuencias futuras que tendrá el cada vez mayor impacto de unas pocas revistas en la modificación del método científico en las ciencias experimentales.

  18. Influencia del impuesto hotelero en la red de promoción turística en la capital mexicana

    Directory of Open Access Journals (Sweden)

    Tomás Cuevas Contreras

    2015-01-01

    Full Text Available El presente documento examina la aplicación del impuesto hotelero en la pro-moción del turismo en la capital mexicana, considerando su gestión a través del Fondo Mixto de Promoción Turística de la Ciudad de México mediante la exploración relacional de los actores involucrados. La metodología considera trabajo de gabinete, así como la aproximación cualicuantitativa al fenómeno de estudio. Para ello se exploran diversos enfoques de gestión del gravamen, sus beneficios en la promoción y el soporte al branding del destino. El análisis es mediante visualización de las redes que muestran la interrelación de factores de influencia entre los actores e interesados en la dinámica turística, represen-tando la perspectiva de reticularidad con respecto a la tributación extraordi-naria e influencia en el fomento de la imagen.

  19. Influencia sobre el extractable de níquel de los minerales oxidados del yacimiento Punta Gorda

    Directory of Open Access Journals (Sweden)

    Antonio R. Chang-Cardona

    2014-12-01

    Full Text Available El propósito fue validar, a escala industrial, una metodología para períodos largos en una loza de 8 hornos en la empresa productora de níquel Comandante Ernesto Che Guevara, con el fin de crear una base de datos de producción confiable para su procesamiento estadístico y demostrar la influencia del contenido de los principales minerales oxidados sobre el extractable de níquel y la tendencia en el comportamiento del extractable de cobalto. Se demostró, mediante experimentos, durante tres meses de monitoreo, la efectividad del software COMPRAC para obtener la composición racional de 100 kg de varios tipos de mena laterítica que entran a los hornos de reducción. A partir de la base de datos creada se obtuvo, por primera vez, las gráficas que reflejan la influencia del contenido de los principales minerales sobre los extractables de níquel y de cobalto; en el caso del níquel con suficiente sensibilidad y confiabilidad para la toma de decisiones operacionales eficaces en el circuito tecnológico Mina-Preparación de Mineral-Hornos de Reducción

  20. La influencia de la publicidad infantil de alimentos: antecedentes y estado de la cuestión

    Directory of Open Access Journals (Sweden)

    Cristina González Díaz

    2013-11-01

    Full Text Available Actualmente estamos asistiendo a un incesante bombardeo de noticias que nos muestran el tipo de productos que la publicidad de alimentos, dirigida específicamente al target infantil, publicita: productos hipercalóricos, con altos niveles en azúcares y sal, etc; en definitiva, productos poco recomendables en la dieta del niño. Al mismo tiempo, no cesan de publicarse investigaciones académicas sobre el poder persuasivo y la capacidad de influencia que este tipo concreto de publicidad posee sobre el niño. Bajo este contexto, este artículo trata de abordar los estudios académicos más significativos que han investigado la posible relación entre la publicidad de alimentos dirigida a niños y la problemática de la obesidad, o más a grandes rasgos, la influencia que la publicidad específica de este sector puede tener en la ingesta de alimentos poco saludables

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

    Directory of Open Access Journals (Sweden)

    Cira de Pelekais

    2006-05-01

    Full Text Available El propósito fue determinar la influencia de la Inteligencia Emocional sobre Clima Organizacional en los niveles gerenciales medios de las PYMES. La investigación fue caracterizada bajo un enfoque descriptivo explicativo, con un diseño no experimental transeccional. Como unidades de análisis fueron tomadas las PYMES adscritas a la cámara de Industria y Comercio de Cabimas, totalizando 100 empresas activas. Para la recolección de la información se utilizó un cuestionario autoadministrado, con escala tipo Likert. Los resultados arrojaron que los gerentes de nivel medio tienen bien identificadas sus emociones y sentimientos, igualmente tienen una excelente percepción del clima organizacional, sin embargo existen ciertos factores de la Inteligencia Emocional que afectan directamente sobre el Clima Organizacional, tal es el caso de la motivación y las habilidades sociales, los cuales no se encuentran en los niveles óptimos de actuación, afectando directamente los niveles de responsabilidad y manejo de conflictos, permitiendo así referenciar que si existe una muy alta influencia de los factores de la Inteligencia Emocional sobre el Clima Organizacional.

  2. INFLUENCIA DE LA COMPOSICION DE LA LECHE EN POLVO SOBRE LA ACTIVIDAD DE AGUA APLICANDO EL MODELO DE GAB

    Directory of Open Access Journals (Sweden)

    Julio Gil

    2016-01-01

    Full Text Available El presente trabajo, mediante el estudio de las isotermas de sorción a 25ºC, analiza la influencia sobre la actividad de agua (aw, de las diferentes composiciones de leche en polvo entera, descremada y reducida en lactosa. Justamente la incorporación de esta última a trabajos anteriores permite ampliar el comportamiento diferencial de los distintos componentes. E l trabajo permite establecer la relación entre el contenido de humedad de las leches en polvo estudiadas, con su actividad de agua (aw. Los resultados experimentales son evaluados con el modelo referencial de GAB , observando que el trazado de las isotermas y los parámetros del modelo se ajustan satisfactoriamente a los valores obtenidos . Se obser va la clara influencia de la presencia de los monosacáridos (glucosa y galactosa en la leche reducida en lactosa, que disminuyen la actividad a valores mayores a 0 . 4, debido a la mayor solubilidad de estos. El contenido graso en la leche entera, al no ser adsorbente se manifiesta en valores mayores para la actividad de agua.

  3. Influencia personal de los candidatos y competencia espacial en las elecciones presidenciales venezolanas de 2006 a 2013

    Directory of Open Access Journals (Sweden)

    Julen Berasaluce Isa

    2016-10-01

    Full Text Available En la presente investigación se justifica la construcción de un modelo de competencia espacial para las elecciones presidenciales venezolanas con base en el número efectivo de partidos y los índices de polarización ponderada y escalar. El modelo presentado permite construir una clasificación de la influencia personalista de los candidatos, como resto no explicado por una competencia ideológica espacial. Además de clasificar a los candidatos de las tres últimas elecciones presidenciales por su influencia personal, se ofrecen previsiones para futuros comicios tomando como base el cambio de la distribución ideológica. Para la construcción del modelo, se consideran los supuestos de voto ideológico simétrico y una sola dimensión. / This research project presents a spatial competition model for Venezuelan presidential elections based on the effective number of parties and weighted and scalar polarization indices. The model makes it possible to construct a classification of candidates’ influence based on personality as an remainder unexplained by spatial ideological competition. In addition to classifying the candidates in the last three presidential elections by their personal influence, the authors offer predictions for future balloting based on change in ideological distribution. Suppositions of symmetrical ideological votes and a single dimension were used to build the model.

  4. La influencia social de la televisión: fuentes y métodos de estudio

    Directory of Open Access Journals (Sweden)

    MANUEL MARTÍN SERRANO

    1982-01-01

    Full Text Available Se propone una teoría de la influencia de la televisión, basada en valores de objetividad social. Se analizan como defectuosos los estudios previos sobre el papel de la televisión como mediadora de las relaciones entre el productor, el consumidor y el votante, llevados a cabo por empresas de mercadotecnia porque no promueven un mayor uso social de la televisión. La publicidad se basa en la falsificación y ocultamiento de la realidad. La publicidad política compromete a la democracia al apelar a las emociones más que a la discusión racional. El papel de la televisión en los procesos de socialización esta en función de los modelos significativos de ambos, la televisión y su audiencia: donde estos sistemas de valores y referencia coinciden, la influencia de la televisión será fuerte. Se sugiere que el efecto básico de la televisión no puede ser cambiado sin cambios correlativos en la organización social.

  5. Tópicos da teoria da relatividade

    OpenAIRE

    Fragata, Paulo Renato Ferreira

    2013-01-01

    Dissertação de Mestrado, Matemática para Professores, 25 de Outubro 2013, Universidade dos Açores. Qualquer descrição física da natureza tem por base a especificação da posição e do instante em que decorre determinado acontecimento. Para tal, é necessário recorrer a um sistema de coordenadas, escolhido por cada observador, do modo que ele achar mais pertinente. Dada a generalidade na escolha do sistema de coordenadas, é útil conhecer as regras que nos permitem comparar cálculos feitos em d...

  6. O comportamento do consumidor do setor farmacêutico diante da demanda não atendida – implicações para a cadeia de suprimentos

    Directory of Open Access Journals (Sweden)

    Maria Aparecida Gouvêa

    2007-03-01

    Full Text Available Neste artigo é realizado um estudo sobre o comportamento dos clientes de uma drogaria, na situação de não haver encontrado o produto desejado. O objetivo deste estudo é avaliar o comportamento dos clientes, considerando a importância dos consumidores como elo final da cadeia de suprimentos de um setor. O comportamento de compra dos consumidores finais afeta decisivamente o gerenciamento da cadeia de suprimentos, uma vez que influencia a tomada de decisões das várias empresas da cadeia. Conhecer efetivamente o comportamento dos vários elos da cadeia, incluindo o consumidor final, traz inúmeras vantagens, entre elas maior compreensão de interligações especialmente significativas na cadeia, melhor gestão da capacidade produtiva, política de estocagem mais eficiente e facilidade para focalizar uma perspectiva de longo prazo. Um mapeamento das associações das possíveis decisões comportamentais dos clientes a suas características individuais foi obtido por meio da técnica de análise de correspondência múltipla. Essa análise permitiu maior compreensão de aspectos subjacentes ao comportamento dos clientes da drogaria que foi objeto de estudo deste trabalho.

  7. O passado anulado: os reflexos da inadequada justiça transicional para a democracia brasileira

    Directory of Open Access Journals (Sweden)

    Carla Dóro de Oliveira

    2017-08-01

    Full Text Available O trabalho busca analisar o processo transicional brasileiro pelo estudo das medidas adotadas pelo Estado durante a redemocratização. A partir disso, buscou-se reconhecer os aspectos positivos e negativos do processo justransicional, identificando de que forma sua incompletude influencia na democracia e na persistência de um cenário de violência no país. Na metodologia utilizou-se pesquisa bibliográfica numa abordagem qualitativa. Os resultados do trabalho apontam que medidas adotadas pelo Brasil, apesar de relevantes, são insuficientes para a consolidação de uma cultura democrática e de respeito aos direitos humanos no país, impondo-se, assim, a implementação da justiça transicional em todos os seus aspectos.

  8. Portal transmídia mundo do sítio: análise do projeto transmídia do Sítio do Picapau Amarelo e sua relação com as demais extensões da obra de Monteiro Lobato

    OpenAIRE

    Rubens Francisco Torres

    2014-01-01

    Importante autor da literatura infantojuvenil brasileira, Monteiro Lobato criou com seus livros do Sítio do Picapau Amarelo um universo que permanece e influencia o imaginário da população brasileira até hoje. Esse universo não se restringiu apenas à literatura, ele expandiuse também em outras mídias ao longo de quase noventa anos, por meio de seriados televisivos, histórias em quadrinhos, cinema, entre outras mídias. Em 2011, tornou-se disponível o portal online Mundo do Sítio, primeiro prod...

  9. Influencia atmosférica en la rotación terrestre

    Science.gov (United States)

    Fernández, L. I.; Arias, E. F.; Brunini, C. A.

    Las observaciones de los parámetros de la orientación terrestre han alcanzado en estos últimos años una exactitud sin precedentes gracias al uso de modernas técnicas de geodesia espacial. Estudios previos han establecido que las variaciones en la rotación terrestre con períodos iguales o menores que dos años obedecen a cambios en la circulación atmosférica global. Para estos períodos puede comprobarse que existe un gran acuerdo entre las fluctuaciones de la longitud del día (LOD) y los cambios del momento angular atmosférico terrestre (AAM). Sin embargo, no existe un acuerdo general acerca de las causas que provocan las variaciones de largo período de la rotación de la Tierra, también conocidas como ``variaciones decenales''. En nuestro análisis examinamos las correlaciones entre las variaciones de los valores de LOD y las fluctuaciones en la componente polar del momento angular atmosférico terrestre. Con este propósito utilizamos los siguientes juegos de datos: las series de AAM, estimado siguiendo la definición de Barnes et al.(1983) para 2825 días provientes del National Meteorological Center (NMC) y del European Centre for Medium Range Weather Forecast (ECMWF); y las series de LOD que contienen valores alisados espaciados a intervalos de un día elaborados por el International Earth Rotation Service (IERS). Mostraremos que para los cambios anuales e interanuales en la rotación de la Tierra la influencia atmosférica es asombrosa, mientras que, tanto en las escalas temporales más grandes y como en las más pequeñas, ambas series, geodésica y atmosférica, parecen diverger aún cuando poseemos observaciones obtenidas con las técnicas más modernas al presente.

  10. La influencia de la cultura en los estilos parentales en contextos de vulnerabilidad social

    Directory of Open Access Journals (Sweden)

    María C. Richaud

    2013-06-01

    Full Text Available Los objetivos del presente trabajo son: (a analizar si las relaciones entre las dimensiones de la parentalidad y el ajuste de los niños en lo que se refiere a estrategias de afrontamiento, se mantienen constantes en una muestra argentina y otra española en contextos de pobreza; (b comparar las dimensiones de la parentalidad en los dos grupos en estudio, y (c determinar la eficiencia de la parentalidad través del estudio de su influencia en la forma de afrontar la amenaza de los niños. Se administró la escala Graffar-Méndez Castellano (Méndez-Castellano & Méndez, 1994, que permite una caracterización socio económica de la población; la escala argentina de percepción de la relación con los padres para niños de 8 a 12 años (Richaud 2007a y el cuestionario argentino de afrontamiento para niños (Richaud, 2006, a una muestra de 458 niños argentinos y españoles de 10 a 12 años. Seutilizaron correlaciones para analizar las relaciones entre las dimensiones parentales y las estrategias de afrontamiento de los niños, y análisis múltiples de variancia (MANOVA, para estudiar si existían diferentes estilos de relaciones de los padres con los hijos en los dos grupos (Argentina y España, y para analizar si existían diferencias en las estrategias de afrontamiento en los niñosde los dos grupos estudiados. Los resultados indican que la aceptación de ambos padres se relacionó positivamente en ambos grupos con las estrategias más funcionales del afrontamiento, y que las dimensiones parentales negativas, tanto el control patológico paterno como lanegligencia de ambos padres, se relacionaron positivamente, en ambos grupos, con el descontrol emocional de los niños. Por su parte, se observa un tipo de relación parental de mayor autonomía y extrema-negligencia en el grupo argentino, y de mayor control extremo en elgrupo español. Al mismo tiempo, se encontró que los niños del grupo argentino adoptan estrategias de afrontamiento menos

  11. LA INFLUENCIA DE LAS FORMAS INARTICULADAS, INTERJECCIONES Y ONOMATOPEYAS INGLESAS EN LOS TEBEOS ESPAÑOLES

    Directory of Open Access Journals (Sweden)

    Isabel de la Cruz Cabanillas

    2009-10-01

    Full Text Available Los intentos de clasificación de interjecciones, onomatopeyas y formas inarticuladas no han resultado satisfactorios, pues no existe una taxonomía aceptada de forma generalizada. Basándonos en estudios anteriores, el presente trabajo pretende revisar estos fenómenos en tebeos tan netamente españoles como Mortadelo y Filemón, Zipi y Zape, Super López, Bruguelandia y TBO. Para ello se compila un corpus de unidades léxicas que reflejan tanto sonidos inarticulados, como interjecciones y onomatopeyas con el objetivo de estudiar si dichas unidades utilizadas en los tebeos corresponden a la representación de ese sonido articulado, esa interjección o esa onomatopeya en su forma inglesa o en su forma española. Así, se podrán obtener conclusiones sobre la posible influencia de la lengua inglesa en los tebeos españoles a través de la clasificación de las unidades recopiladas en el corpus, aún no tratándose de traducciones sino de producciones nacionales, y posiblemente se podrá determinar hasta qué punto dichas formas podrían entenderse por parte de un hablante hispano sin la ayuda gráfica que supone la viñeta.The attempts at classifying interjections, onomatopoeias and inarticulated forms have not turned out satisfactory, as there is no taxonomy that is widely accepted. Taking as basis previous studies, the present piece of work intends to revise these phenomena in so genuine Spanish comics as Mortadelo y Filemón, Zipi y Zape, Super López, Bruguelandia and TBO. To do so, a corpus of lexical units including inarticulated sounds, interjections and onomatopoeias is compiled in order to examine whether the units used in the comics correspond to the representation of that articulated sound, that interjection or that onomatopoeia in their English form or in their Spanish form. This will allow us to draw conclusions on the possible influence of the English language in the Spanish comics through the classification of the units compiled in

  12. Abordajes teóricos en la comprensión de la influencia de los recursos económicos en la actividad física

    OpenAIRE

    Montenegro Mendivelso, Mónica

    2015-01-01

    Estudio cualitativo que analiza los abordajes teóricos utilizados por diferentes autores en la comprensión de la influencia de los recursos económicos en la actividad física desde los modelos de determinantes y determinación social.

  13. Prensa y transición : Cambio 16 y su influencia en la opinión pública (Nov. 1976 - Dic.1977)

    OpenAIRE

    Santiago Lorenzo, Rosa

    2015-01-01

    Cambio 16 fue uno de los muchos semanarios y diarios que ayudaron a crear una opinión pública democrática. Se analiza la influencia que tuvo la revista en la opinión pública de la población española

  14. 120. Influencia del desajuste paciente-prótesis en la morbimortalidad intrahospitalaria del paciente joven intervenido de recambio valvular aórtico por estenosis grave

    Directory of Open Access Journals (Sweden)

    D. Hernández-Vaquero

    2012-04-01

    Conclusiones: El desajuste paciente-prótesis es un hallaz-go frecuente en el paciente joven intervenido de recambio valvular aórtico por estenosis grave. Además, su influencia a los 30 días de seguimiento parece relevante.

  15. Impacto da Conversão da Cobertura Natural em Pastagem e Área Urbana sobre Variáveis Biofísicas no Sul do Amazonas

    Directory of Open Access Journals (Sweden)

    Vagner Marques Pavão

    Full Text Available Resumo A substituição da cobertura natural por áreas de pastagem afeta o albedo superficial, que por sua vez influencia no saldo de radiação e na temperatura superficial. Assim, o objetivo desse trabalho foi avaliar os impactos do desmatamento sobre variáveis biofísicas no município de Apuí-AM, por imagens Landsat 5 TM (Thematic Mapper. As imagens utilizadas nesse estudo foram fornecidas pelo Serviço Geológico dos Estados Unidos (USGS. A imagem de 20/07/2010 foi processada por etapas intermediárias do SEBAL (Surface Energy Balance Algorithm for Land. O desmatamento no município de Apuí aumentou em 20% nos últimos 20 anos analisados. O NDVI da Floresta foi 20 e 43% maior que da pastagem e da área urbana, respectivamente. O albedo da superfície na pastagem e na área urbana foram 16% maiores que na área de Floresta e a temperatura de brilho da superfície na pastagem e na área urbana foram 16 e 10% maiores que na área de Floresta, respectivamente. O Rn na área de Floresta foi 8% e 6% maior que na área urbana e na pastagem, respectivamente. Portanto, a conversão da Floresta Amazônica modifica o balanço de radiação com maior disponibilidade de calor sensível da superfície nas áreas de pastagem e urbana.

  16. MACIEZ DA CARNE BOVINA

    Directory of Open Access Journals (Sweden)

    Antonio Bento Mancio

    2006-10-01

    Full Text Available Dentre as características de qualidade da carne bovina, a maciez assume posição de destaque, sendo considerada a característica organoléptica de maior influência na aceitação da carne por parte dos consumidores. A dureza da carne pode ser dividida em dureza residual, causada pelo tecido conjuntivo e outras proteínas do estroma, e dureza de actomiosina, causada pelas proteínas miofibrilares. Dentre os fatores que influenciam a maciez da carne, podem ser destacados a genética, a raça, a idade ao abate, o sexo, a alimentação, o uso de agentes hormonais (?-adrenérgicos e os tratamentos post-mortem. A qualidade final da carne é resultante de tudo o que aconteceu com o animal durante toda a cadeia produtiva. Devem-se assegurar procedimentos adequados de transporte, armazenamento, manipulação, exposição e preparo da carne, a fim de se obter um produto de melhor qualidade. PALAVRAS-CHAVE: Calpaínas, calpastatina, qualidade da carne, rigor mortis, tecido muscular.

  17. Influencia del apoyo de la enfermera en el éxito de la lactancia materna

    OpenAIRE

    Martínez Dávila, Desirée

    2013-01-01

    La autora realiza una investigación en un hospital privado de Salamanca para conocer de primera mano qué tipo de información se le da a las madres acerca de la lactancia materna. Previamente la autora realiza un estudio sobre el puerperio, la lactancia materna y el apoyo que deben recibir las madres por parte del personal de enfermería.

  18. GERONTOLOGIA: ESTADO DA ARTE

    Directory of Open Access Journals (Sweden)

    Vera M.A.Tordino Brandão

    2010-02-01

    Full Text Available O Programa de Gerontologia da PUC desenvolve pesquisas focando o ser na perspectiva do envelhecimento. As atividades são interdisciplinares e reúnem docentes, alunos e ex-alunos. Nesta mesa redonda apresentamos um panorama sobre estes estudos. Na área da educação e comunicação o foco está centrado na longevidade e na preparação e representação social da velhice. São ressaltadas como temáticas: a formação continuada de profissionais e pesquisadores; o significado da religiosidade/espiritualidade ao longo da trajetória, e sua repercussão na qualidade de vida do idoso; os programas sócio-educacionais para idosos e concepções sobre educação; o monitoramento da mídia na cobertura da crescente longevidade e seus impactos. Em identidade e modos de morar reflete-se sobre soluções planejadas e sua adequação para a inclusão do envelhecimento populacional como questão fundamental, que implica a elaboração de novas políticas, investigações e, especialmente, apresenta-se como questão a ser analisada, refletida e vivenciada pela sociedade em geral. Quanto à saúde, o Programa desenvolve várias pesquisas numa abordagem interdisciplinar tendo como objetos de estudo: a terapia assistida com animais direcionada a idosos com diagnóstico de Alzheimer; o acompanhamento terapêutico e o atendimento psicoterapêutico em grupo, a aplicação da técnica de Calatonia em idosos moradores de ILPI, além da investigação sobre impasses clínicos no idoso frágil. Palavras-chave: gerontologia, longevidade, envelhecimento

  19. Conjecturas da Epistemológia Jurídica e Aspectos da Teoria da Linguagem

    OpenAIRE

    Oliveira, Rita de Cássia Cartelli de; Cesumar; Motta, Ivan Dias; Cesumar

    2008-01-01

    Apresentar-se-ão reflexões em torno da epistemologia jurídica e alguns aspectos da teoria da linguagem; a necessidade de acompanhamento e aprimoramento da linguagem jurídica, para que o direito não se distancie da realidade, mantendo-se apenas como um sistema do status quo; uma breve análise de algumas teorias da ciência do direito e da linguagem; as especificidades dos termos lingüísticos para a análise da ciência do direito, pautada na contemporaneidade sob a perspectiva humanista, buscando...

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

    OpenAIRE

    Rita de Cássia Malagoli; Fabiana Fagundes A. Santos; Eduardo Araújo Oliveira; Maria Cândida F. Bouzada

    2012-01-01

    OBJETIVO: Verificar a influência do posicionamento do recém-nascido prematuro sobre a força da musculatura respiratória, oxigenação e frequência respiratória. MÉTODOS: Estudo transversal com amostra pareada de recém-nascidos com idade gestacional inferior a 34 semanas, intubados, em processo final de desmame de ventilação mecânica. Foram excluídos aqueles com malformações, síndromes genéticas, doenças neuromusculares, traqueostomizados e em pós-operatório de cirurgias abdominais ou torácicas....

  1. CONDICIONANTES DA COMPETITIVIDADE EMPRESARIAL

    Directory of Open Access Journals (Sweden)

    José Luiz Contador

    2010-03-01

    Full Text Available Este trabalho examina teoricamente os fatores determinantes da competitividade do produto e do negócio, imprescindíveis à elaboração de estratégias competitivas que visam à obtenção e sustentação de vantagens competitivas. Esse tema é objeto tanto da área de marketing estratégico quanto da de estratégia empresarial. Nas duas áreas, há um ponto de consenso que afirma que a empresa deve diferenciar sua oferta para conquistar e manter vantagem competitiva. Mas, os estudos conduzidos por meio do modelo de Campos e Armas da Competição revelaram que a empresa pode diferenciar seu produto e/ou serviço de modo mais amplo, levando em consideração, na formulação da sua estratégia competitiva, também o campo da competição, quer do produto, quer dela própria. Assim, o objetivo deste artigo é evidenciar que, para a empresa ser competitiva, além de diferenciar seu produto e/ou seu serviço no sentido tradicional, ela precisa: 1 diferenciar seu produto incluindo a definição em quais campos vai competir em cada segmento; e 2 escolher as armas da competição que irá utilizar e definir a intensidade de cada arma. Para atingir tal objetivo, foram necessários vários conceitos do modelo de Campos e Armas da Competição: campo da competição, arma da competição, tese do modelo, configuração dos campos da competição, campo coadjuvante, produto coadjuvante e par produto-mercado. Como uma proposta inovadora sempre desperta dúvida, é mostrado o processo de validação do modelo de Campos e Armas da Competição e são discutidas sua universalidade, consistência e completude.

  2. Influencia del acabado superficial en la permeación de hidrógeno del acero API 5L-X52

    Directory of Open Access Journals (Sweden)

    Réquiz, R.

    2004-02-01

    Full Text Available The influence of surface roughness on the corrosion and hydrogen permeation behaviour was evaluated on a type API 5L-X52 steel in deaerated 0.1 M Na2SO4 at pH=2. Potentiodynamic polarization curves were employed to determine the electrochemical behaviour of the steel, while the Devanathan-Stachurski technique was used to estimate the hydrogen permeation rate. Additionally, the surface roughness profiles were obtained in order to correlate the changes in the hydrogen permeation rate with different metal surface finishings. The obtained results clearly demonstrate that when the roughness parameters have larger values, the cathodic current of hydrogen evolution increases while the hydrogen entry rate decreases. This effect can be attributed to the microstructural defects induced at the steel surface, such as dislocations, which increase the catalytic activity of the atomic hydrogen favouring its recombination. Also, these defects could allow the atomic hydrogen to remain adsorbed on the steel surface. Both effects could hinder the hydrogen diffusion into the metal since the possibility for this atom of becoming absorbed has been reduced

    En el presente trabajo de investigación se evalúa la influencia del acabado superficial, tanto en la corrosión generalizada como en la permeación de hidrógeno del acero API 5L-X52 en solución de Na2SO4 0,1M, a pH=2. El comportamiento electroquímico del acero se estudió mediante las curvas de polarización potenciodinámicas, mientras que la susceptibilidad al daño por hidrógeno se evaluó mediante la técnica de permeación de Devanathan- Stachurski. Además, se determinaron los parámetros de rugosidad a las muestras de acero con diferentes acabados superficiales, para luego correlacionarlos con los cambios en las corrientes de permeación de hidrógeno. Los resultados obtenidos demuestran, claramente, que, cuando la rugosidad superficial del acero

  3. Influencias nacionales europeas en la política educativa española del siglo XX

    Directory of Open Access Journals (Sweden)

    Juan Manuel FERNÁNDEZ SORIA

    2010-03-01

    Full Text Available RESUMEN: En este artículo se estudian las influencias de los macromodelos nacionales europeos en la política educativa española. Francia y su especial influjo en aspectos políticos y administrativos proporciona los principios que atraen a muchos protagonistas de la educación española durante el primer tercio del XX; Alemania, junto a la sistematización de su pensamiento ofrece una pedagogía propiciadora de un socialismo humanista y una ética nueva; el modelo de formación de minorías que caracteriza la pedagogía inglesa fascina a liberales y conservadores. La influencia de la Rusia soviética es visible sobre todo durante la República en guerra, un momento éste en el que, y hasta mediados del siglo, la educación del régimen de Franco conoce también el peso de la pedagogía nazi sobre todo en la organización de la juventud y en experiencias de asistencia social, y de la pedagogía del fascismo italiano en la política educativa del primer franquismo. A partir de entonces la influencia en la política educativa española corresponde a los organismos internacionales.ABSTRACT: The influence European macro models have upon Spanish educational policy, is studied in this article. France and its special influence in political and administrative aspects, provides the principles which attract many protagonists of the Spanish education during the first third of the 20th century. Germany, with the systematisation of its thoughts, offers a pedagogy that propitiates a humanist socialism and a new ethic. The model of education of minorities, characteristic of English pedagogy, fascinates both liberals and conservatives. The influence of the Soviet Russia is visible above all during the Republic in times of the Civil War, moment in which, and until about the middle of the 20th century, Franco’s regime education also knows the weight of nazi pedagogy, specially in youth organisations and in social work experiences, and the Italian’s fascism

  4. Influence of application time for 32-P labelled triple superphosphate on the fertilizer use efficiency and productivity of potato. Influencia da epoca de aplicacao de 32-P superfosfato triplo na eficiencia da fertilizacao fosfatada e na produtividade da batata

    Energy Technology Data Exchange (ETDEWEB)

    Bastidas O, O G; Leon A, A [Instituto de Asuntos Nucleares, Bogota (Colombia); Urquiaga C, S [Empresa Brasileira de Pesquisa Agropecuaria, Seropedica, RJ (Brazil)

    1988-09-01

    A study was performed on a soil derived from volcanic ash (Andic Humitropept), in Pasto (Narino), Colombia, to investigate the influence of additions of 100 and 200 Kg P[sub 2] O[sub 5] ha[sup -1], at two application times (plating and 30 days after emergence - DAE), on the fertilizer use efficiency and productivity of potato (Solanum tuberosum L.) cv. Pardo Pastusa. At planting the phosphorus was applied in a continuous row in the furrow, and at 30 DAE at one side of the plant row, and immediately covered with soil from both sides of the furrow. The fertilizer used was 32 P labelled triple superphosphate (143.59 [mu] Ci.g P[sup -1]). It was found that: (a) the phosphorus fertilization significantly increased (P<0.05) the yield (from 19.9 to 37.7 t. ha[sup -1]) and the accumulation of P (from eight to 17.8 Kg P ha[sup -1]) by the tubers, but there was no significant effects of times of the fertilizer application; (b) the accumulation of P by the plant accompanied the accumulation of plant dry matter; (c) at 75 DAE the fraction of fertilizer P in the plant shoot in the treatment fertilizer at 30 DAE (52.1%) was significantly higher than that fertilized at planting (21.8%), and this corresponded to a P fertilizer use efficiency of 2.4 and 0.82%, respectively. (author).

  5. Effect of the available soil water and organic matter on the castor bean foliar area growth; Influencia da agua disponivel e materia organica no crescimento da area foliar da mamoneira

    Energy Technology Data Exchange (ETDEWEB)

    Lacerda, Rogerio D. de; Almeida, Larissa C.; Guerra, Hugo O. Carvalho; Souza, Cristiana M. de; Batista, Faed R. [Universidade Federal de Campina Grande (UFCG), PB (Brazil)], Emails: rogerio_dl@yahoo.com.br, laris_almeida@yahoo.com.br, hugo_carvallo@hotmail.com, crismsouza@hotmail.com, faedrideiro@hotmail.com

    2010-07-01

    The Brazilian potential for bio fuel production through the cultivation of oil seeds is immeasurable. On the Northeast is possible to cultivate the castor bean, peanuts, sesame, babassu and other species. Just for the castor bean there exist 3.0 millions of hectares able for cultivation. The experiment had as objective to study the effect of available soil water for plants and organic matter on the foliar area production. It was conducted on the field during the period of October 2008 to March 2009 using an experimental design 2 x 4 factorial on a randomized-complete block design, constituted of two soil organic matter contents (5.0 g.kg{sup -1} and 25.0 g.kg{sup -1}) and four soil water contents (100, 90, 80 and 70% of the soil available water for the plants) with 3 replicates. On each 100 m{sup 2} parcel 50 plants were cultivated until 180 days after the sowing, DAS. The analyses of variance allowed to observe that the addition of organic matter increased the foliar areas in 20,7% and the available water produced an increment of 51,5% when were elevated from 70 to 100%. (author)

  6. Advanced gastric adenocarcinoma. Influence of preoperative radiation therapy on toxicity and long-term survival rates; Adenocarcinoma gastrico avancado. Analise da toxicidade e da influencia da radioterapia pre-operatoria nos indices de sobrevivencia a longo prazo

    Energy Technology Data Exchange (ETDEWEB)

    Malzoni, Carlos Eduardo

    1996-12-31

    The surgical treatment of gastric cancer has better long-term survival rates when performed in patients with early gastric cancer. Worse results are obtained in treatment of advanced gastric cancer. Most patients in west centers are treated in advanced stages. A great number of them go through a surgical treatment unable by itself to cure them. the frequent local recurrence caused by failure of the surgical treatment has been keeping poor survival rates in patients with advanced gastric cancer for decades. The desire of improving survival is the reason of the use of adjuvant therapies. This paper achieved the retrospective study of the influence of preoperative radiation therapy (2000 cGy) in long-term survival rates (120 months) of patients with advanced gastric cancer on stages IIIa, IIIb and IV. The possible injuries caused in the liver and kidney were observed also as well as first group was treated by surgical and radiation therapies and the second received surgical treatment only. There was no statistical difference between the two groups when sex, age, race, occurrence of other diseases, nutritional assessment, TNM stage, occurrence of obstruction or bleeding caused by tumor, surgical procedure and hepatic and renal function were considered. Survival rates and changes on hepatic and renal function were statistically compared. The results showed a statistic improvement on the long-term survival rates of stage IIIa patients treated by preoperative radiation therapy. No statistic difference was observed on hepatic or renal function between the groups. No adverse influence of radiation therapy method was detected by the used parameters. There was no statistical difference between the two groups when immediate surgical complications were considered. (author) 112 refs., 34 tabs.

  7. Advanced gastric adenocarcinoma. Influence of preoperative radiation therapy on toxicity and long-term survival rates; Adenocarcinoma gastrico avancado. Analise da toxicidade e da influencia da radioterapia pre-operatoria nos indices de sobrevivencia a longo prazo

    Energy Technology Data Exchange (ETDEWEB)

    Malzoni, Carlos Eduardo

    1997-12-31

    The surgical treatment of gastric cancer has better long-term survival rates when performed in patients with early gastric cancer. Worse results are obtained in treatment of advanced gastric cancer. Most patients in west centers are treated in advanced stages. A great number of them go through a surgical treatment unable by itself to cure them. the frequent local recurrence caused by failure of the surgical treatment has been keeping poor survival rates in patients with advanced gastric cancer for decades. The desire of improving survival is the reason of the use of adjuvant therapies. This paper achieved the retrospective study of the influence of preoperative radiation therapy (2000 cGy) in long-term survival rates (120 months) of patients with advanced gastric cancer on stages IIIa, IIIb and IV. The possible injuries caused in the liver and kidney were observed also as well as first group was treated by surgical and radiation therapies and the second received surgical treatment only. There was no statistical difference between the two groups when sex, age, race, occurrence of other diseases, nutritional assessment, TNM stage, occurrence of obstruction or bleeding caused by tumor, surgical procedure and hepatic and renal function were considered. Survival rates and changes on hepatic and renal function were statistically compared. The results showed a statistic improvement on the long-term survival rates of stage IIIa patients treated by preoperative radiation therapy. No statistic difference was observed on hepatic or renal function between the groups. No adverse influence of radiation therapy method was detected by the used parameters. There was no statistical difference between the two groups when immediate surgical complications were considered. (author) 112 refs., 34 tabs.

  8. La influencia del fenómeno El Niño y del índice de oscilación del sur en las precipitaciones de Cochabamba, Bolivia

    Directory of Open Access Journals (Sweden)

    1998-01-01

    Cochabamba, Bolivia, ubicados entre los 17°20’ y 17°45’ de latitud sur y de 66°05’ y 66°20’ de longitud oeste. Se utilizó la información de 20 estaciones meteorológicas, y las series de TSM del IOS. Las series que se estudiaron fueron divididas en anual, mensual y diaria. Se aplicaron los análisis cualitativo y cuantitativo. Con la aplicación de “Series de Tiempo” se determinó el año hidrológico y las anomalías de las precipitaciones, ajustándose a un promedio móvil de 4 años para las estaciones que reciben la influencia remanente de los frentes del sur y de la Zona de Convergencia Intra tropical-ZCIT y de 5 años para el resto de las estaciones. Se concluyó que la influencia del fenómeno El Niño se da más en las precipitaciones registradas en Cochabamba y con menor incidencia en las precipitaciones registradas en Arani. La influencia del IOS se da más en las precipitaciones de Arani y en menor proporción en las precipitaciones en Cochabamba. Lo cual implica que la influencia del fenómeno El Niño y del Índice de Oscilación del Sur se da en la distribución espacio-temporal de las precipitaciones registradas en los valles de Cochabamba. Esta anomalía afecta directamente la agricultura y de forma indirecta el incremento de los problemas socioeconómicos en el departamento de Cochabamba. “EL NIÑO” PHENOMENON AND SOUTHERN OSCILLATION INDEX INFLUENCE ON THE PRECIPITATION IN COCHABAMBA, BOLIVIA. For a long time, the “El Niño” phenomenon and the Southern Oscillation Index (SOI had been attributed as a factor of less importance on the time-space distribution of the registered atmospheric precipitation in the Cochabamba valley, mainly, and in Bolivia, in general. This study had been carried out at the Alto (upper, Central (middle and Bajo (lower valleys in the Cochabamba department, in Bolivia. These valleys are located between 17°20’ and 17°45’ South, and between 66°05‘and 66°20‘West. The information from 20 meteorological stations, the

  9. Efeito da eutonia no tratamento da fibromialgia

    OpenAIRE

    Maeda,Cecília; Martinez,José Eduardo; Neder,Matilde

    2006-01-01

    OBJETIVO: avaliar a eutonia como método terapêutico auxiliar no tratamento da fibromialgia (FM). MÉTODOS: estudou-se um grupo de 20 mulheres, segundo os critérios do American College of Rheumatology (ACR), com duração mínima de seis meses, sem alterações no tratamento medicamentoso ou prescrição de exercícios nesse período. As pacientes foram avaliadas através do questionário de dados sociodemográficos; Escala Visual Analógica (EVA) para dor e questionário genérico de avaliação da qualidade d...

  10. Het Italiaanse voorzetsel da

    NARCIS (Netherlands)

    Boer, M.G. de

    2010-01-01

    SAMENVATTING In een voorzetselstudie in het kader van Jackendoffs semantische theorie wordt het sterk polyseme Italiaanse voorzetsel da geanalyseerd als een verzameling deelbetekenissen waarbij de meeste door een of meer semantische regels afgeleid kunnen worden van de basisbetekenis ruimtelijke

  11. ESPECTROS INFRAVERMELHOS DA CREATINA

    Directory of Open Access Journals (Sweden)

    Kumiko K. Sakane

    2011-08-01

    Full Text Available São apresentados espectros infravermelhos da creatina, na faixa de 4000 a 400 cm−1. Os resultados são comparados com espectros observados e calculados, publicados na literatura.

  12. Significados Ocultos da Enfermagem

    Directory of Open Access Journals (Sweden)

    Wiliam César alves Machado

    2011-04-01

    Full Text Available Sabe-se que as ações de cuidar em enfermagem foram sendo moldadas através da história da humanidade e deram-se, majoritariamente, na esfera do subjetivo que permeia as interações existenciais do ser humano que cuida e daquele que recebe cuidados. Campo fecundo para intercâmbios eletromagnéticos. Suas origens remontam ao cuidado prestado por mães, pais, avós, irmãos e demais familiares incumbidos da responsabilidade de ajudar entes recém-natos, crianças, doentes e idosos em suas necessidades de cuidados para preservação da vida.

  13. Psicodinâmica da violência de grandes grupos e da violência de massas

    Directory of Open Access Journals (Sweden)

    Vamik D. Volkan

    Full Text Available A partir de Freud, as teorias psicanalistas sobre grandes grupos focalizam, principalmente, as percepções e os significados que, psicologicamente, os indivíduos atribuem a eles. Este texto analisa alguns aspectos sobre a psicologia dos grandes grupos e sua psicodinâmica interna e específica. Toma como referência grupos étnicos, nacionais, religiosos e ideológicos cujo pertencimento dos sujeitos iniciou-se na infância. O autor faz uma comparação entre o processo de luto em indivíduos e o processo de luto em grandes grupos para ilustrar por que é necessário investir no conhecimento da psicologia destes últimos como um objeto específico. O autor descreve, ainda, sinais e sintomas de regressão em grandes grupos. Quando há ameaça à identidade coletiva, pode ocorrer um processo de violência de massas que obviamente influencia a saúde pública.

  14. ORIGEM DA ANGTIA MODERNA

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    Edvino Rabuske

    1971-01-01

    Full Text Available O tema que me foi proposto "origem da angtia moderna". Por certo, um tema extremamente complexo. Trata-se de surpreender as modalidades modernas de um fenomeno, antigo como o prrio homem. Visando contribuir numa semana de reflexo sobre a esperan crist em, que esta abordada a partir, de diversos gulos, parece indicado que esta exposio n se atenha a um ico aspeto da angtia.

  15. INFLUENCIA DE LA AUTOEFICACIA EN EL ÁMBITO ACADÉMICO

    Directory of Open Access Journals (Sweden)

    Fernando Ruiz Dodobara

    2005-04-01

    Full Text Available RESUMEN: La autoeficacia o creencia en la propia capacidad en determinadas situaciones puede ser considerada un concepto vital en el ámbito educativo, puesto que es un elemento que predice de mejor manera el desempeño de la habilidad y del conocimiento personales. Este concepto se inserta dentro de la Teoría Social Cognitiva de Bandura, en la cual se considera al ser humano como un individuo autorganizado, autorreflexivo, autorregulado y comprometido con su desarrollo. Un punto clave en esta teoría es que las personas tienen creencias personales (creencias de autoeficacia, que les permiten ejercitar cierto control sobre sus sentimientos, acciones y pensamientos. Esto quiere decir que el comportamiento de los individuos se ve influido por lo que piensan, creen y sienten. Así, pues, la autoeficacia se convierte en un buen elemento de predicción del comportamiento humano. Las creencias de autoeficacia influyen en la conducta en general, mediante procesos cognitivos, motivacionales, afectivos y selectivos. Específicamente, en el ámbito académico, las creencias de autoeficacia actúan sobre la motivación, la persistencia y éxito académico. Cabe mencionar, también, que las creencias de autoeficacia que los profesores tienen acerca de su labor tienen una influencia importante en el desempeño de los alumnos. Finalmente, podemos mencionar que, entre las fuentes de autoeficacia, se encuentran el manejo exitoso de experiencias, la comparación con modelos similares, la persuasión social y los estados corporales. ABSTRACT: Believing in the own capacity or self- effectiveness in certain situations could be considered as a vital concept within the academic field because it can better predict performance than otherwise personal skills and knowledge can do.This concept is inserted within Bandura’s Cognitive Social Theory, which considers the human being as a self-organized, self-reflexive and task-committed individual. A key point in this

  16. Influencia de la retórica musical de Los Beatles en los “jingles” y en la publicidad

    Directory of Open Access Journals (Sweden)

    Anton Alvarez Ruiz

    2013-01-01

    Full Text Available Este artículo explora de qué manera los jingles publicitarios se han visto influidos por la música de The Beatles. Para ello, utiliza una metodología descriptiva, comparativa y diacrónica. Tras estudiar brevemente la historia e importancia de los jingles, analizando algunas características de las canciones de The Beatles y su semejanza con los jingles publicitarios. En las canciones mencionadas se detallan las principales figuras retóricas encontradas, tanto en los textos como en las frases musicales y su influencia en la música publicitaria. También se estudia la única pieza publicitaria conocida realizada por The Beatles en su carrera. Por último, se analiza la posterior utilización de sus canciones y su imagen en varias campañas muy significadas, realizadas por la publicidad comercial en las últimas décadas.

  17. Influencia de los cambios en la profesión sobre la educación odontológica

    OpenAIRE

    Perdomo Sturniolo, Ivana Lorena

    2017-01-01

    El propósito de esta investigación será observar la influencia de los cambios producidos en la profesión y como afectaron en la forma de enseñar la odontología. Desde su creación hasta la actualidad, describiendo los hechos históricos más relevantes que llevaron a que se produzcan, y viendo cómo la enseñanza en las escuelas y Facultad de Odontología de la Universidad Nacional de la Plata han ido adaptándose a dichos cambios, haciendo hincapié en los últimos 50 años. Objetivos: Identificar los...

  18. Influencia de los estilos de liderazgo en el desempeño de las empresas exportadoras colombianas

    Directory of Open Access Journals (Sweden)

    Diana Marcela Escandon-Barbosa

    2016-01-01

    Full Text Available Este artículo parte de la teoría de rasgos de liderazgo para analizar la influencia del tipo de liderazgo de lasempresas colombianas sobre su desempe ̃no exportador. Para cumplir este objetivo se utiliza una base dedatos de 306 empresas exportadoras colombianas y por medio de un análisis de conglomerados bietápicose analizan los diferentes tipos de liderazgo: democrático, autocrático y liberal. Los resultados obtenidosidentifican un conglomerado de empresas con alto desempe ̃no exportador que combinan el liderazgoliberal y el democrático, mientras que el segundo conglomerado está conformado por las empresas conbajo desempe ̃no exportador que asumen un liderazgo liberal. Se concluye que para alcanzar niveles dedesempe ̃no superior los gerentes colombianos ejercen el liderazgo como un equilibrio entre libertad ycontrol.

  19. La otra América. Influencia de la literatura estadounidense en Roberto Bolaño

    OpenAIRE

    Fernández Díaz, José Javier

    2014-01-01

    Los vínculos entre la literatura estadounidense y la obra de Roberto Bolaño han sido objeto de numerosas reseñas y artículos. Sin embargo su estudio hasta la fecha no ha cristalizado en un trabajo monográfico. «La otra América: influencias de la literatura estadounidense en Roberto Bolaño» tiene entre sus objetivos construir un mapa literario que dé cuenta del diálogo entre textos y autores. El corpus de la tesis se ha extraído de las más de cien menciones explícitas a escritores y libros est...

  20. Influencia de la radiación solar en la salud de las personas en la ciudad de Moquegua

    OpenAIRE

    Rodríguez Ordoñez, Freddi Roland

    2015-01-01

    La presente investigación se realizó con el objetivo de comprobar la influencia de la radiación solar en la salud de las personas; para concretar esta investigación se aplicó las técnicas: análisis de contenido, fichaje y una encuesta, teniendo en cuenta instrumentos preparados de acuerdo a los objetivos específicos de la investigación. Se solicitó datos históricos de la radiación solar ultravioleta al Servicio Nacional de Meteorología e Hidrología del Perú (SENAMHI); al Hospital Regional de ...

  1. INFLUENCIA DE LA TEMPERATURA Y EL PORCENTAJE DEL CATALIZADOR EN LA ETANÓLISIS DEL ACEITE DE PALMA

    Directory of Open Access Journals (Sweden)

    Paulo César Narváez

    2008-03-01

    Full Text Available En este artículo se presenta la influencia de la temperatura y el porcentaje de catalizador sobre la etanólisis del aceite de palma, y los resultados se comparan con los obtenidos para la metanólisis del mismo aceite. Se realizaron ensayos a 60, 70 y 75 ºC, empleando como catalizador NaOH. Los porcentajes en peso de catalizadorcon respecto al aceite de palma fueron 0,20; 0,50 y 1,00. Los resultados muestran que incrementos en la temperaturay en el porcentaje de catalizador aumentan el rendimiento de la reacción. En comparación con la metanólisis, en la etanólisisse observó disminución en el rendimiento y en la selectividad.

  2. LOS VIEJOS ANTECEDENTES ANDALUSÍES DE LA INTERTEXTUALIDAD Y SU POSIBLE INFLUENCIA EN EL OCCIDENTE CRISTIANO

    Directory of Open Access Journals (Sweden)

    Kevin Perromat Agustín

    2014-10-01

    Full Text Available La literatura arábiga medieval posee la singularidad de haber elaborado una teoría considerable sobre la intertextualidad y los límites de la apropiación e imitación poéticas. En este contexto, los tratadistas árabes consideraron simultánea y paradojicamente el plagio (sariqa como infracción de las normas literarias y como uno más de los recursos literarios legítimos del poeta. Por el momento se desconoce su posible ascendiente en las poéticas medievales del Occidente cristiano, aunque, a la luz de determinadas evidencias, no es descartable una influencia tangencial o implícita. Por este motivo, el estudio de los autores de al-Ándalus, así como de otros territorios fronterizos, reviste un gran interés en tanto escenarios privilegiados de estos intercambios textuales.

  3. Influencia del grado de molienda en la actividad puzolánica de arcillas que contienen caolinita y halloysita

    Directory of Open Access Journals (Sweden)

    Leonardo Cabrera

    2016-01-01

    Full Text Available El objetivo de este trabajo es analizar la influencia del grado de molienda en la actividad puzolánica de diferentes arcillas que contienen los minerales Caolinita y/o Halloysita. Se utilizaron 4 arcillas, cuantificando la fase amorfa formada durante la calcinación a 700 ºC y realizando distintos procesos de molienda. Se determinó que la actividad puzolánica de las arcillas calcinadas depende de la composición mineralógica y defectos superficiales, cantidad de fase amorfa y finura. La mayor actividad puzolánica fue obtenida para la arcilla con un elevado contenido de Halloysita finamente molida. La utilización de un 25% de reemplazo de cemento Portland (CP por esta muestra permite superar la resistencia a la compresión respecto al mortero-CP a partir de los 7 días.

  4. Análisis cuantitativo en la influencia de la geomorfología en la estabilidad de taludes

    OpenAIRE

    Camacho Orozco, Sebastián; Ramos Cañón, Alfonso Mariano; Escobar Vargas, Jorge Alberto; Garzón González, Andrés Francisco

    2017-01-01

    La ocurrencia de deslizamientos está relacionada con unos factores que condicionan y otros que detonan los procesos de remoción en masa. Este trabajo contribuye a cuantificar la influencia de la geomorfología en la estabilidad de taludes como factor condicionante por medio de un análisis basado en el método de elementos finitos con un modelo constitutivo elastoplástico. Los análisis se realizaron a través de la simulación numérica de 9 modelos de taludes en tres dimensiones. Se obtuvo la vari...

  5. La Influencia de la Temperatura Exterior sobre los Sistemas de Ventilación Natural en Grandes Atrios

    Directory of Open Access Journals (Sweden)

    Espina, P.

    2008-09-01

    Full Text Available Natural venting systems present numerous advantages opposite to the mechanical exhaust for the smoke control – a reduction in both facilities and maintenance costs–. Nevertheless, the influence of numerous factors affects significantly their efficacy: the architectural characteristics of the building, the direction and wind velocity, the proximity of tall buildings, the smoke temperature, the environmental interior and exterior temperatures, the existence of snow or ice on the ceiling, etc. All of them are important, but the influence of the environmental exterior temperature plays a decisive role. The goal of this Investigation Research was to evaluate the influence of the external temperature on the smoke movement and the hot layer descent regarding the efficacy of the natural venting systems installed for the smoke control in large atria. The analysis was developed using the ‘Fire Dynamics Simulator - FDS’ model (1, a computational fluid dynamics (CFD model of fi re-driven fluid flow for the study of fire. The results demonstrated that a design that does not contemplate this factor can turn out to be inadequate, since it has a decisive influence to guarantee human safety. The obtained results showed very significant differences about the different parameters linked to the smoke movement in an atrium.Entre las diferentes estrategias de Control y Evacuación de los Humos del Incendio, los sistemas de ventilación natural presentan numerosas ventajas frente a la ventilación mecánica – fundamentalmente una menor inversión tanto en equipos como en gastos de mantenimiento –. Sin embargo, su eficacia depende de la influencia ejercida por numerosos factores – características arquitectónicas del edificio, dirección y velocidad del viento, proximidad de edificios de gran altura, temperatura de los humos, temperatura ambiental interior, temperatura en el exterior del recinto, existencia de nieve o hielo en

  6. Influencia de la buccalina ® en la concentración de streptococcus mutans en saliva total

    OpenAIRE

    Guardia Mendez, Gustavo

    2015-01-01

    Se realizó un estudio longitudinal en 28 niños de 6 años de edad para determinar la influencia de la BUCCALINA ® en la concentración de Streptococcus mutans en saliva total. Se midió la concentración de Streptococcus mutans en saliva total de todos los niños antes del experimento. 14 niños escogidos al azar recibieron la vacuna y 14 recibieron placebo. A los 37 días se midió la concentración de Streptococcus mutans en saliva total de todos los niños. Se usó la “t” de student para determinar l...

  7. A força do cinema para a massificação ou para a promoção da diversidade cultural

    Directory of Open Access Journals (Sweden)

    Cecília Leão Oderich

    2017-12-01

    Full Text Available A imagem influencia a compreensão, o conhecimento, a formação ideológica de indivíduos e grupos. Este trabalho apresenta um ensaio que analisa a força do cinema como arte que pode tanto legitimar padrões em processos de apropriação, padronização e massificação cultural, quanto pode se constituir como um espaço de inclusão, de crítica, de diversidade cultural e diálogo intercultural. São apresentados exemplos de filmes e os desafios dos cinemas nacionais e do cinema independente quando buscam além da hegemonia do visual. A perspectivação sobre diferentes temas, desde questões étnicas, da obesidade, do colonialismo, da escolarização, da “deformidade”, por exemplo, pode ocorrer a partir do cinema de massa ou do cinema independente. A pesquisa sobre cinema pode ajudar na crítica anticolonizadora, no diálogo intercultural e na ampliação da tomada de consciência sobre a importância da arte e do cinema nas forças que conjuminam em modelos e padrões para uma suposta normalidade ou sucesso, na busca por relações menos estereotipadas.

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

    Directory of Open Access Journals (Sweden)

    Acosta, Savier

    2010-09-01

    Full Text Available El objetivo de esta investigación fue identificar la influencia de los mapas conceptuales en lo afectivo-valorativo del estudiante para aprender Biología. Las teorías que sirvieron de apoyo las fueron Díaz y Hernández (2007, Novak (1998. La investigación se realizó en la Unidad Educativa José Antonio Almarza; fue de tipo experimental con un diseño cuasi-experimental. La población estuvo conformada por 468 estudiantes, de donde se seleccionó una muestra de 68 estudiantes (33 del grupo control y (35 el grupo experimental. La técnica utilizada para recolectar información fue la observación; el instrumento, una hoja de registro validado previamente por expertos en el área. Se aplicó la prueba t de student para establecer los grados de significancia entre el pre y postest, el análisis de los resultados se efectuó mediante la estadística descriptiva y la inferencial a través de frecuencias, porcentajes, media y la desviación estándar. Como resultados los mapas conceptuales aumentan en los estudiantes su responsabilidad para aprender Biología, respeto hacia la forma de pensar de los demás, valoración del trabajo en equipo, importancia para aprender Biología e incorporación de experiencias significativas del contexto. En conclusión que los mapas conceptuales ejercen influencia en el desarrollo de sentimientos y valores en los estudiantes para aprender dicha ciencia.

  9. Influencia de un sólido sobre el secado de mezclas líquidas parcialmente miscibles

    Directory of Open Access Journals (Sweden)

    M. Vargas

    2006-01-01

    Full Text Available Un estudio experimental del secado convectivo de un sólido humedecido con una mezcla líquida que exhibe separación de fases durante el proceso de evaporación ha sido efectuado. Los experimentos fueron realizados en un secador de túnel a escala de laboratorio bajo diferentes condiciones de operación tales como temperatura y velocidad del gas así como diferentes composiciones de las mezclas líquidas. Se humedeció el sólido con mezclas binarias y ternarias, y se efectuó la evaporación a partir de la superficie libre líquida. Se utilizo como humedad el sistema binario agua-hexano y la mezcla ternaria agua-hexano-etanol, ambos involucrados en la extracción de biopesticida a partir de semillas de nim. Esferas de vidrio y semillas de nim trituradas fueron usadas como sólido. La densidad y el índice de distribución másico de las fases tienen gran influencia en el proceso de evaporación. Si la fase menos densa del hexano esta en exceso, la superficie es cubierta solamente por esta fase y no existe evaporación de la otra fase hasta que el índice de distribución másico es tal que la segunda fase es expuesta al gas. La presencia de un sólido poroso interrumpe este patrón y la fase más densa puede ser removida simultáneamente incluso a bajas fracciones de esta última. En este caso, también la forma en que el sólido fue humedecido tiene influencia en el proceso.

  10. A influencia dos agentes sociais nos interesses fisico-esportivos do lazer

    OpenAIRE

    Olivia Ferreira Ribeiro

    1997-01-01

    Resumo: Este estudo buscou relaciona o processo de socialização aprendizagem dos valores culturais de uma sociedade com os hábitos de lazer dentro dos interesses físico-esportivos (Dumazedier, 1980). È reconhecido que os agentes socializadores, ou seja, os elementos ativos que participam do processo de socialização, têm grande influência no comportamento no lazer. Baseando-se no referencial teórico da Psicologia Social do Lazer (Isso-Ahola 1980), esta pesquisa teve como objetivo verificar c...

  11. Influencia de la citoquina Interleuquina 6 (IL-6) adipocitaria y muscular en el control del metabolismo

    OpenAIRE

    Ferrer Villahoz, Beatriz

    2013-01-01

    La interleuquina -6 (IL-6) es una citoquina pleiotrópica cuya función principal se da en el sistema inmune en el control de la inflamación. Realiza importantes funciones en la homeostasis del sistema nervioso central (SNC), en la respuesta al ejercicio físico e incluso en el metabolismo (particularmente en funciones relacionadas con la insulina). Diversos estudios han demostrado que la IL-6 podría tener un papel en el control del peso corporal tanto a nivel de SNC como periférico, aunque no e...

  12. Evaluation of conformal radiotherapy techniques through physics and biologic criteria; Avaliacao de tecnicas radioterapicas conformacionais utilizando criterios fisicos e biologicos

    Energy Technology Data Exchange (ETDEWEB)

    Bloch, Jonatas Carrero

    2012-07-01

    In the fight against cancer, different irradiation techniques have been developed based on technological advances and aiming to optimize the elimination of tumor cells with the lowest damage to healthy tissues. The radiotherapy planning goal is to establish irradiation technical parameters in order to achieve the prescribed dose distribution over the treatment volumes. While dose prescription is based on radiosensitivity of the irradiated tissues, the physical calculations on treatment planning take into account dosimetric parameters related to the radiation beam and the physical characteristics of the irradiated tissues. To incorporate tissue's radiosensitivity into radiotherapy planning calculations can help particularize treatments and establish criteria to compare and elect radiation techniques, contributing to the tumor control and the success of the treatment. Accordingly, biological models of cellular response to radiation have to be well established. This work aimed to study the applicability of using biological models in radiotherapy planning calculations to aid evaluating radiotherapy techniques. Tumor control probability (TCP) was studied for two formulations of the linear-quadratic model, with and without repopulation, as a function of planning parameters, as dose per fraction, and of radiobiological parameters, as the α/β ratio. Besides, the usage of biological criteria to compare radiotherapy techniques was tested using a prostate planning simulated with Monte Carlo code PENELOPE. Afterwards, prostate planning for five patients from the Hospital das Clinicas da Faculdade de Medicina de Ribeirao Preto, USP, using three different techniques were compared using the tumor control probability. In that order, dose matrices from the XiO treatment planning system were converted to TCP distributions and TCP-volume histograms. The studies performed allow the conclusions that radiobiological parameters can significantly influence tumor control

  13. ANÁLISE ESPACIAL DA TEMPERATURA E DA PRECIPITAÇÃO MEDIA ANUAL NO ESTADO DE SÃO PAULO / SPATIAL ANALYSIS OF MEAN ANNUAL TEMPERATURE AND RAINFALL FOR THE SÃO PAULO STATE

    Directory of Open Access Journals (Sweden)

    SIDNEY R. VIEIRA

    2009-11-01

    Full Text Available O objetivo deste trabalho foi analisar a variabilidade espacial da temperatura e da precipitação média anual no Estado de São Paulo. Foram utilizados dados de 416 estações climatológicas, referente ao período de 1936 a 1992 e analisados dois parâmetros climatológicos (temperatura média anual e precipitação pluvial média anual. Os dados foram analisados por meio da estatística descritiva e dageoestatística, para posterior construção de mapas de variabilidade espacial. Os resultados evidenciam que a altitude (m e a temperatura média anual (ºC apresentaram baixos valores de efeito pepita enquanto que a precipitação pluvial média anual (mm apresentou um maior pra esseparâmetro. A temperatura média anual (ºC e a precipitação pluvial média anual (mm apresentaram periodicidade detectada por meio do semivariograma experimental. Os mapas de distribuição espacial evidenciam a influencia da altitude sobre os valores estimados por krigagem para temperatura médiaanual (ºC e precipitação pluvial média anual (mm.

  14. Estudo comparativo sobre representações visuais em interfaces com base em ícones de dispositivos móveis da Apple

    OpenAIRE

    Marshal Becon Lauzer

    2013-01-01

    Esta dissertação teve por objetivo verificar se existe um diferencial estético nas representações visuais nas interfaces gráficas dos dispositivos móveis da Apple e, se existir, se esse diferencial efetivamente influencia o vínculo do usuário com a marca e se o usuário tem consciência dele. Para tanto é apresentada uma breve análise diacrônica sobre as interfaces computacionais, bem como uma descrição de momentos chave na história da referida empresa. A partir disto, são abordadas questões qu...

  15. Auto-relato e relato de informante secundário na avaliação da saúde em idosos

    OpenAIRE

    Jardim, Renata; Barreto, Sandhi Maria; Giatti, Luana

    2010-01-01

    OBJETIVO: Analisar se o modelo explicativo para a avaliação da saúde do idoso com base no auto-relato é comparável com o modelo de relato do informante secundário e se a auto-avaliação de saúde do informante secundário influencia a avaliação da saúde do idoso. MÉTODOS: Estudo transversal com 230 pares idoso-informante secundário realizado em Belo Horizonte, MG, em 2007. Foram investigadas variáveis sociodemográficas e de saúde dos idosos por meio de entrevista estruturada. Utilizou-se regress...

  16. As dobras da imagem

    Directory of Open Access Journals (Sweden)

    Profª. Drª. Fátima Antunes da Silva (Yaska Antunes

    2009-05-01

    Full Text Available O presente trabalho tem por objetivo tentar compreender a produção da imagem visual no teatro. Para isso se vale da apropriação livre do conceito de “dobra? de Gilles Deleuze para se referir à multiplicidade de imagens criadas pelas diversas modalidades artísticas. Como no teatro há o entrelaçamento de imagens verbais – palavras enunciadas pelo texto dramático ou teatral – com imagens visuais – a visualidade advinda da composição cênica concreta que organiza no espaço ator e objeto –, a ênfase só podia recair sobre estas duas formas imagéticas. No caso do teatro, surge ainda a percepção de que para além da materialidade da cena, outras imagens emergem do confronto entre palco e platéia. Nesse sentido, imagem teatral seria então aquilo que surge da interação entre ator e espectador. A contribuição desse trabalho pode estar no fato de atualizar certos conceitos sobre a criação da imagem poética na poesia e no cinema para aplicá-los ao teatro. Ao recuperar o pensa-mento de Otávio Paz, Alfredo Bosi, Sergei Eisenstein, entre outros, bus-ca-se promover uma reflexão mais aprofundada sobre a construção visual no teatro.

  17. A condição sénior no Sul da Europa e na Escandinávia

    Directory of Open Access Journals (Sweden)

    António Calha

    2015-06-01

    Full Text Available O aumento da esperança média de vida associado a uma retração significativa da natalidade tem contribuído para um rápido envelhecimento das sociedades e uma profunda alteração da estrutura demográfica de muitos dos países europeus. Neste artigo, analisamos as especificidades da condição sénior nos países do Sul da Europa e da Escandinávia. Tratando-se de países com uma configuração de modelos de proteção social distintos, procuramos perceber se existem formas diferenciadas de viver a velhice nessas sociedades. Para tal, recorremos à análise dos resultados obtidos no European Social Survey (round 5 - 2010. A análise realizada revela que a existência de diferentes modelos que configuram a condição sénior nas sociedades em análise traduz-se em formas diferenciadas de lidar com o processo de envelhecimento. Concluímos que a condição de idoso não depende exclusivamente dos fatores biológicos relacionados com a limitação física, pois o contexto social em que se enquadra a vivência desse período da vida também influencia a condição sénior e a forma como os idosos a perspetivam.

  18. Morfotectônica da Bacia Hidrográfica do Rio Bonito, Petrópolis, RJ

    Directory of Open Access Journals (Sweden)

    Laura Delgado Mendes

    2007-11-01

    Full Text Available O objetivo deste trabalho é investigar o papel das estruturas subjacentes associadas à evolução tectônica regional e o seu reflexo na geomorfologia, a partir de uma abordagem morfotectônica na bacia do rio Bonito, localizada no extremo norte do município de Petrópolis, Planalto Serrano do Estado do Rio de Janeiro. As estruturas identificadas na área correspondem a falhas e famílias de juntas, que estão relacionadas com as descontinuidades de caráter regional e diretamente associadas ao contexto geológico regional ao qual se inserem, exibindo condições significativamente marcadas pelos processos vinculados à ruptura continental e abertura do Oceano Atlântico, iniciados a partir do Jurássico Superior, especialmente pela reativação de descontinuidades preexistentes. O controle tectônico-estrutural se reflete na compartimentação morfotectônica a partir (ada integração dos dados estruturais, da análise dos lineamentos da rede de drenagem, que definem trends de lineamentos que correspondem a estruturas identificadas e medidas, (b do relevo, que apresenta escalonamentos e o desenvolvimento de vales suspensos, e (c da distribuição espacial da cobertura sedimentar que reproduz a complexidade de feições observadas tanto no contexto local quanto no regional. Dessa maneira, tendo como princípio que a tectônica influencia diretamente a evolução da paisagem, os dados obtidos mostram uma interferência direta das estruturas na compartimentação morfotectônica e na dinâmica e evolução da paisagem da área em estudo.

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

    Directory of Open Access Journals (Sweden)

    Rosangela Formentini Caldas

    2012-06-01

    Full Text Available A aplicabilidade das teorias administrativas explica o processo de mudança e adaptação das unidades informacionais e refletem a influencia que o ambiente exerce sobre as organizações. O foco em estudos que otimizam os recursos institucionais, promovem uma compreensão da área da CI determinando sua essencial função na sociedade do conhecimento. O ambiente organizacional sofre influencias diretas do processo administrativo do trabalho e a solução de conflitos promove o êxito das organizações. No departamento de arquivo, o fator dos grupos informais determinados na teoria das relações humanas, exerce uma forte influência na gestão local. A pesquisa propôs verificar as influências social e científica da teoria das relações humanas para o processo de gestão de arquivos e para tanto se utilizou o estudo de caso de um arquivo pertencente a uma instituição universitária. A ferramenta estratégica de recolha de dados foi o Grupo Focal. A análise dos dados guiou-se por três fases distintas: Elementos motivacionais; influência comportamental no indivíduo e; integração da organização formal com a informal. Como resultados do estudo, a motivação e um bom ambiente de trabalho destacaram-se nos fatores que desenvolvem habilidades e competências dos funcionários, interferindo no comportamento organizacional que faz-se presente através de formas de recompensas, reconhecimento, homem social e grupos informais. Entende-se que pesquisas dessa natureza contribuem para o desenvolvimento da gestão de arquivos e sugere-se que os dados resultantes da análise sejam aplicados em arquivos com uma estrutura organizacional mais complexa, como no caso de arquivos públicos institucionais.

  20. MORTALIDADE FEMININA E ANOS DE VIDA PERDIDOS POR HOMICÍDIO/AGRESSÃO EM CAPITAL BRASILEIRA APÓS PROMULGAÇÃO DA LEI MARIA DA PENHA

    Directory of Open Access Journals (Sweden)

    Nádia de Araújo Amaral

    2013-01-01

    Full Text Available La violencia contra la mujer es un fenómeno que afecta a todas las personas en todas las partes del mundo. En Brasil, en 2006, se promulgó la Ley 11.340/2006, bautizada como Ley Maria da Penha, con la función basilar de cohibir la violencia domestica, familiar y afectiva. La finalidad del estudio fue comparar la mortalidad femenina por agresión/homicidio antes y después de la Ley en Rio Branco, Acre, Brasil. Fue desarrollado un estudio ecológico con víctimas de agresión y homicidios registrados en el Sistema de Información de Mortalidad, del 2002 al 2010. Las mujeres víctimas de homicidio tenían entre 21 e 25 años (28,6%, bajo nivel de escolaridad (39,3% y sin ocupación (64,3%. La incidencia de óbitos mostró disminución seguido por aumento en los últimos dos años, con reflejos en los Años Potenciales de Vida Perdidos en el rango de edad de 16 a 39 años. La Ley Maria da Penha es una realidad en el país y tiene papel relevante en la sociedad por esa razón su efectividad e influencia deben ser analizadas en otras investigaciones.

  1. Trauma da Veia Porta

    Directory of Open Access Journals (Sweden)

    Gustavo Pereira Fraga

    Full Text Available OBJETIVO: O trauma da veia porta é raro e freqüentemente fatal por causa de exsanguinação e alta incidência de lesões de estruturas adjacentes. Devido às pecualiaridades desta lesão e diferentes condutas propostas na literatura, o objetivo dos autores é relatar a experiência neste tipo de lesão. MÉTODO: Estudo retrospectivo, de janeiro de 1994 e dezembro de 2001, de 1370 pacientes submetidos à laparotomia devido trauma abdominal. Entre esses, 15 pacientes apresentavam lesão da veia porta. As lesões foram classificadas conforme a sua extensão e localização. RESULTADOS: O mecanismo de trauma predominante foi o penetrante. O diagnóstico da lesão foi realizado no intraoperatório. Os procedimentos executados foram: sutura, anastomose término-terminal e ligadura da veia porta. A mortalidade foi de 53,3%. CONCLUSÃO: A lesão da veia porta possui alta taxa de mortalidade e o atendimento adequado está diretamente relacionado à sobrevida.

  2. On the influence of environmental factors on radon levels in caves of Ribeira valley state parks, SP and evaluation of radioactive equilibrium and equilibrium factor between radon and its progeny; Sobre a influencia de fatores ambientais nos niveis de radonio em cavernas dos parques estaduais do vale do Ribeira, SP e avaliacao do equilibrio radioativo e fator de equilibrio entre radonio e seus descendentes

    Energy Technology Data Exchange (ETDEWEB)

    Alberigi, Simone

    2011-07-01

    In the present study it was carried out the monitoring of radon in caves distributed among three state parks of Sao Paulo. The radon concentration were determinate in Morro Preto and Santana caves, located at PETAR - Parque Estadual Turistico do Alto Ribeira (High Ribeira River Tourist State Park), Diabo cave, situated in PEJ - Parque Estadual de Jacupiranga (Jacupiranga State Park) and Colorida cave located in PEI - Parque Estadual Intervales (Intervales State Park PEI). The monitoring covered measurements between April 2009 and June 2010. Radon concentrations were carried out by using the technique of passive detection with CR-39 solid state nuclear track detectors and NRPB diffusion chambers. The detectors were exposed in periods ranging from 30 to 150 days. Radon concentrations varied from 132 Bq/m{sup 3} to 9456 Bq/m{sup 3}. The values of radon concentrations were analyzed together with information about rainfall and internal and external temperature values of the Santana cave environment and regional literature values for a possible relationship between radon variations and weather information. Both the determinations of {sup 22}'6Ra in water samples collected in some caves and rivers and radon emanation from a stalactite collected at Santana cave allowed to verify that the radon in the caves comes from the walls rocks. The verification of the radioactive equilibrium between {sup 222}Rn, {sup 218}Po and '2{sup 14}Po in the exposed detectors was prejudiced by the high tracks densities, committing the methodology effectiveness. The annual effective dose was calculated for three values obtained from the literature for the equilibrium factor. Considering the most realistic scenario, with equilibrium factor of 0.5 and 52 working weeks, the annual effective dose was 5.1 mSv/y. Concerning the worst scenario, which simulates an extreme case, adopting an equilibrium factor equal to 1 and 52 weeks of work per year, the annual effective dose is 10.2 mSv/y. Also with information received from a monitoring company in the region about the hours their touristic guides spent monthly inside the caves, it was estimated the received dose that resulted in a total annual effective dose of 8.5 mSv/y, considering an equilibrium factor 0.5 and, for the worst scenario of an equilibrium factor of 1, the result was 17.0 mSv/y. All estimated doses values are below 20 mSv/y, which is the upper limit of annual effective dose for occupational exposure recommended by the International Commission on Radiological Protection.

  3. EL HOMBRE DE LA MULTITUD Y EL PINTOR DE LA VIDA MODERNA: LA INFLUENCIA DE EDGAR ALLAN POE EN LA CONSTRUCCIÓN DEL CONCEPTO DE MODERNIDAD DE BAUDELAIRE

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    Francisco Pizarro Obaid

    2012-04-01

    Full Text Available El siglo XIX dio lugar a nuevas formas de subjetividad metropolitana que tuvieron en el cuento "El hombre de la multitud", de Edgar Allan Poe, un tratamiento excepcional. Es innegable la relevancia de este relato al interior de su obra, así como su aporte al desarrollo del género narrativo. Sin embargo, el cuento de Poe puede ser considerado, a su vez, como una fuente de notable influencia en la redefinición del concepto de modernidad que Baudelaire plasmará en su obra "El pintor de la vida moderna". Al examinar el personaje anónimo de "El hombre de la multitud" y la singularidad del Sr. G, pintor que da fundamento a la crítica de la tradición pictórica de costumbres, quedará en evidencia como los principales argumentos de Baudelaire sobre el arte y las nuevas formas de habitar la ciudad moderna encuentran en el relato de Poe una significativa fuente de inspiración.The 19th century gave rise to new forms of metropolitan subjectivity with an exceptional treatment in EdgarAllan Poe's tale "TheMan of the Crowd". The relevance of this short story into his work is undeniable, as well as its contribution to the development of the narrative genre. However, Poe's story can be considered as a source of considerable influence in the redefinition of the concept of modernity, that Baudelaire will express in his work "The Painter of Modern Life". In examining the anonymous character of "The Man of the Crowd" and the singularity of Mr. G, the painter who gives substance to the criticism of the pictorial tradition of customs, it grows evident how Baudelaire's main arguments on art and the new ways of life in the modern city find in Poe's short story a significant source of inspiration

  4. Influence of calcination temperature on the structure and morphology of HAp bioceramics; Influencia da temperatura de calcinacao na estrutura e morfologia de bioceramica de HAp

    Energy Technology Data Exchange (ETDEWEB)

    Teixeira, C.M.L.; Santos, P.T.A.; Rodrigues, P.A.; Costa, A.C.F.M. [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Unidade Academica de Engenharia de Materiais

    2012-07-01

    This study aimed to evaluate the influence of calcination temperature on the structure and morphology of samples of hydroxyapatite (HAp) synthesized by the wet method. For hydroxyapatite was used as precursor solutions of calcium hydroxide and phosphoric acid 1M solution of calcium hydroxide was stirred and heated to 80 ° C and then dropwise with a solution of phosphoric acid. After the liquid was evaporated without an oven at 110 ° C and sieved. The sample of PA as synthesized was submitted to calcination at 900 °C and 1100 °C / 2 hours. The samples as synthesized and after calcination were characterized by XRD, XRF, FTIR, SEM. The XRD showed the presence of phase hydroxyapatite for samples without calcining and both calcination temperatures studied. FTIR spectra showed bands group and PO{sub 4}{sup 3-}, CO{sub 3}{sup 2-}. Through the SEM micrograph, there is the formation of agglomerates in the form of porous flakes approximately spherical shape. (author)

  5. Temperature influence on biodiesel production by non-catalytic transesterification; Influencia da temperatura na producao de biodiesel por transesterificacao nao catalitica

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Humberto N.M.; Oliveira, Thomas R; Sousa, Elisa M.B.D. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2008-07-01

    The main objective of this paper is to produce biodiesel using supercritical fluids through of the transesterification process without use of catalysts. It become easier the separation of the reaction products when compared with conventional method. In this work the influence of the temperature in the production of biodiesel from mamona oil was studied. Tree temperatures were studied (473.15 K, 523.15 K and 573.15 K) and the pressure (300 bar) and molar ratio (1:40) was keep constant during the process. Excess of Alcohol was used for this synthesis. The influence of temperature on the conversion and the reaction time was evaluated. The castor bean oil and biodiesel obtained were characterized in relation to their properties more significant. For results, higher conversions were found at higher temperatures (573.15 K), however can see a trend to the stability of reaction. The quality of the product was suitable for most properties evaluated. The equipment designed and built for this purpose was feasible but require some modifications to its optimization. The reaction of biodiesel production was confirmed, even without the addition of catalyst. It was the need to use a large excess of alcohol in relation to oil on this route without catalytic converters. In the case of the route of biodiesel production without the addition of catalysts, was felt the need to use excess alcohol in relation to the castor bean oil. (author)

  6. Analysis of the fuel influence in obtaining HAp by combustion reaction; Analise da influencia do combustivel na obtencao de HAp via reacao de combustao

    Energy Technology Data Exchange (ETDEWEB)

    Santos, T.L.; Leite, A.M.D.; Viana, K.M.S., E-mail: kalineviana@ect.ufrn.br [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Escola de Ciencias e Tecnologia

    2016-07-01

    The search for new materials for biomedical applications has led to investigation of the calcium phosphate bioceramics, and in particular hydroxyapatite (HAp), being a material similar to bone tissue, with excellent biocompatibility and high osteoconduction, enabling bone regeneration which allows the use at implants and prostheses. The synthesis of the nanometric HAp by combustion reaction enables obtaining the nanometric HAp with a more similar structure biological apatite as possible. This work aims to synthesize HAp by combustion reaction using two different routes of synthesis, first, using urea as fuel and the second using glycine, after this, evaluate the influence of fuels used in the microstructure of the hydroxyapatite obtained. The HAp obtained was characterized by: XRD, FTIR and SEM. Through analysis of the results, there is the synthesis conditions used that glycine has performed more favorable to obtaining HAp. (author)

  7. Influence of organic matter and clay minerals in migration of derivative compounds of hydrocarbons; Influencia da materia organica e argilominerais na migracao de compostos derivados de hidrocarbonetos

    Energy Technology Data Exchange (ETDEWEB)

    Ramos, Denize Gloria Barcellos; Mendonca Filho, Joao Graciano de; Polivanov, Helena [Universidade Federal, Rio de Janeiro, RJ (Brazil). Inst. de Geociencias. Dept. de Geologia]. E-mail: denize@geologia.ufrj.br; graciano@geologia.ufrj.br; helena@acd.ufrj.br

    2003-07-01

    Soil samples from the Guanabara Bay in Duque de Caxias city (RJ) were submitted to mineralogical and organic geochemistry analyses. This proceeding was used mainly to determine a possible interaction of hydrocarbons contaminants with the organic matter and the clay minerals presents in this mangrove. The sampling was carried out using Direct Push techniques. Thus, the mainly clay minerals characterizes were: gibbsite, illite, caulinite and smectite. The compositional analysis of organic constituents showed a predominance of amorphous material (degraded cuticles), followed of wood material and sporomorphs constituents, suggesting that the biological degradation occurred in situ. (author)

  8. The kinematic viscosity influence on energetic cost of oil pipeline flow; Influencia da viscosidade cinematica sobre o custo energetico no escoamento de petroleo

    Energy Technology Data Exchange (ETDEWEB)

    Lucena, Kennedy F.M. [Centro Federal de Educacao Tecnologica da Paraiba (CEFET-PB), Joao Pessoa, PB (Brazil); Torres, Euriclides G.; Lacerda, Ivonaldo de S.; Machado, Erica C.M.N. [Universidade Federal de Campina Grande, PB (Brazil)

    2005-07-01

    In the petroleum pipelines flow the objective of the maximum production with the minor cost is desired, considering the techniques, operational and administrative restrictions. One of the biggest difficulties in the pipelines flow is related to increase of viscosity that the fluids produced can present and to the variations during the transport. In this study had been analyzed through computational simulations, using Smart Pumping software, the hydraulic behavior of the network and the operational cost with energy consumption, in function of the variation of the viscosity. Two scenes had been simulated, using a initial kinematic viscosity of 3,029x10{sup -5} m{sup 2}/s, that it was reduced gradually until the minimum limit of 10% of initial viscosity, remaining the too much constant the fluid properties. In scene 1 it was verified that the reduction of viscosity implied in the reduction of the energy cost in up to 14,53%, increase of the daily production in up to 3,88% and the reduction in the cost for m3 flowed off in up to 17,73%, without alterations in the operations. Scene 2 presented similar behavior to scene 1, however, had been necessary interventions to get operations that did not violate the restrictions. The results had ratified the interference of viscosity in the operations and the system petroleum flow costs. (author)

  9. Influence of synthesis energy on physical properties of the oxide nanoparticles; Influencia da energia de sintese nas propriedades fisicas de nanoparticulas de oxidos

    Energy Technology Data Exchange (ETDEWEB)

    Medeiros, A.A.S.; Mello, V.S. e; Trajano, M.F.; Alves, S.M., E-mail: alexandre_xb@hotmail.com [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2014-07-01

    Nanoparticles are present in many research areas giving a range of applications, one of them is lubricant technology. Oxide nanoparticles have been used as extreme pressure additives in boundary lubrication with good results. The great challenge of this technology is in control of the nanoparticles dispersion to ensure their actions as anti-wear additive. This study goal was to evaluate the influence of the amount of energy synthesis in the dispersive properties, size and shape of nanoparticles synthesized by microwave, varying the amount of energy transferred during the synthesis process. The morphology of the nanoparticles was evaluated by SEM and XRD spectrum was used to identify the crystallite size and the formation of copper oxides. The results showed that the size and shape of the particle, and consequently the dispersion, are directly related to amount of energy used in the synthesis are directly related. (author)

  10. Influence of chemical composition in crystallographic texture Fe-Cr-Mo alloys; Influencia da composicao quimica na textura cristalografica de ligas Fe-Cr-Mo

    Energy Technology Data Exchange (ETDEWEB)

    Moura, L.B.; Guimaraes, R.F. [Instituto Federal de Educacao, Ciencia e Tecnologia do Ceara, Fortaleza, CE (Brazil). Dept. da Industria; Abreu, H.F.G. [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil)

    2010-07-01

    The use of steels with higher contents of Mo in the oil industry has been an alternative to reduce the effect of naphthenic corrosion in refining units. The addition of Mo in Fe-Cr alloys in the same manner that increases resistance to corrosion naphthenic causes some difficulties such as difficulty of forming, welding and embrittlement. In this work, experimental ingots of Fe-Cr-Mo alloys (Cr - 9, 15 and 17%, Mo - 5, 7 and 9%) were melted in vacuum induction furnace and hot and cold rolled in a laboratory rolling mill. The influence of chemical composition on crystallographic texture of samples subjected to the same thermo-mechanical treatment was analyzed by x-ray diffraction. The results indicate that fiber (111) becomes more intense with increasing Mo and/or Cr contents. (author)

  11. Influence of the stacking sequence of layers on the mechanical behavior of polymeric composite cylinders; Influencia da configuracao de bobinagem no comportamento mecanico de cilindros de composito polimerico

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Osni de

    2006-07-01

    This work evaluated experimentally the influence of the stacking sequence of layers symmetrical and asymmetrical on the mechanical behavior of polymeric composite cylinders. For so much, two open-ended cylinders groups were manufactured by filament winding process, which had different stacking sequence related to the laminate midplane, characterizing symmetrical and asymmetrical laminates. The composite cylinders were made with epoxy matrix and carbon fiber as reinforcement. For evaluation of the mechanical strength, the cylinders were tested hydrostatically, which consisted of internal pressurization in a hydrostatic device through the utilization of a fluid until the cylinders burst. Additionally, were compared the strains and failure modes between the cylinders groups. The utilization of a finite element program allowed to conclude that this tool, very used in design, does not get to identify tensions in the fiber direction in each composite layer, as well as interlaminar shear stress, that appears in the cylinders with asymmetrical stacking sequence. The tests results showed that the stacking sequence had influence in the mechanical behavior of the composite cylinders, favoring the symmetrical construction. (author)

  12. Influence of the inter-layer adhesion on the structural strength of sandwich pipes; Influencia da adesao entre camadas na resistencia estrutural de dutos sanduiche

    Energy Technology Data Exchange (ETDEWEB)

    Castello, Xavier; Estefen, Segen [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia. Programa de Engenharia Oceanica

    2005-07-01

    Sandwich pipes composed of two steel layers separated by a polypropylene annulus can be used for the transport of oil and gas in deep waters, combining high structural resistance with thermal insulation in order to prevent blockage by paraffin and hydrates. In this work, sandwich pipes with typical inner diameters of those employed in the offshore production are analyzed numerically regarding to the influence of the inter-layer adhesion of steel pipes and polymer on the limit strength under external pressure and longitudinal bending as well as the bending and straightening process representative of the reeling installation method. The numerical model incorporates geometric and material non-linearity, which had been based on previous works of the authors. Tests of specimens under tension and segments of sandwich pipes are carried through to evaluate the maximum shear stresses of the interfaces metal-polymer. The adhesion is modeled by contact adopting a maximum shear stress value to allow the relative displacement between the layers. It was observed that the structural resistance of the sandwich pipe is strongly dependent on the shear stress acting at the interface, occurring the collapse of the pipe when the maximum shear stress is reached. The results obtained are analyzed to determine the minimum shear strength at the union which provides adequate structural resistance for the sandwich pipe under representative conditions of the installation and operation loading phases. (author)

  13. Influence of corrosion defects on the pipeline collapse pressure; Analise da influencia de defeitos de corrosao na pressao de colapso de dutos

    Energy Technology Data Exchange (ETDEWEB)

    Netto, Theodoro A.; Ferraz, Urbano S.; Botto, Adriana [Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE/UFRJ), Rio de Janeiro, RJ (Brazil). Programa de Engenharia Oceanica

    2005-07-01

    The loss of metal in a pipeline due to corrosion usually results in localized pits with various depths and irregular shapes on its external and internal surfaces. The effect of external corrosion defects was studied via a series of small scale experiments and through a non-linear numerical model based on the finite element method. After calibr