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Sample records for aberto ao ar

  1. Do Universo Privado ao Espaço Aberto, do Espaço Aberto ao Universo Privado - Recepção e Gênese de L´Étranger de Albert Camus

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    Samara Geske

    2009-10-01

    Full Text Available Este artigo pretende traçar linhas gerais sobre a recepção e a gênese de L’Étranger , passando pelo universo privado dos primeiros leitores do manuscrito até chegar ao espaço aberto de seus primeiros críticos, para do espaço aberto da obra publicada retornar o universo privado do processo de criação do romance.

  2. Permeabilidade ao ar em Latossolo Vermelho sob diferentes sistemas de manejo

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    Sueli Rodrigues

    2011-02-01

    Full Text Available A permeabilidade ao ar pode ser utilizada para avaliar alterações que ocorrem na estrutura do solo em virtude da adoção de diferentes sistemas de manejo. Este estudo testou a hipótese de que o menor revolvimento do solo sob sistema plantio direto resulta na formação de poros mais contínuos e melhor condição de aeração no solo. O objetivo deste trabalho foi avaliar, por meio da permeabilidade ao ar (Ka, da porosidade de aeração (εa e dos índices de continuidade de poros (K1 e N, a aeração em um Latossolo Vermelho distrófico sob preparo convencional (PC e sistema plantio direto (SPD. Oitenta amostras de solo (2 tratamentos x 2 profundidades x 20 repetições com estrutura indeformada foram coletadas de cada sistema de manejo do solo nas profundidades de 0-0,10 e 0,10-0,20 m em área experimental do Instituto Agronômico do Paraná, no município de Ponta Grossa, Paraná. Depois de saturadas e equilibradas em seis potenciais mátricos (-2, -6, -10, -30, -70 e -100 kPa, determinou-se a permeabilidade ao ar e a porosidade de aeração em cada potencial. Também foram determinados a densidade do solo, a densidade de partícula, o carbono orgânico e a porosidade. A densidade do solo não consistiu em fator limitante, ficando abaixo do limite crítico para solos argilosos nos dois sistemas. No SPD, o maior volume de microporos resultou em maior retenção de água no intervalo de umidade avaliado (-2 a -100 kPa e em maior volume de poros bloqueados para o fluxo de ar (εb, ou seja, redução de Ka. Na profundidade avaliada (00,20 m, os índices de continuidade de poros (K1 e N revelaram que o PC apresentou poros mais contínuos do que o SPD, contradizendo a hipótese testada.

  3. Psychodramatic psychotherapy combined with pharmacotherapy in major depressive disorder: an open and naturalistic study Psicoterapia psicodramática combinada ao tratamento medicamentoso no transtorno depressivo maior: um estudo aberto e naturalístico

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    Elisabeth Maria Sene Costa

    2006-03-01

    psicodramática no tratamento do transtorno depressivo maior. O objetivo deste estudo foi o de avaliar o impacto da psicoterapia psicodramática em uma amostra de pacientes com transtorno depressivo maior. MÉTODO: Este estudo constituiu-se de um ensaio clínico controlado, naturalístico, não-randomizado e aberto. Vinte pacientes com transtorno depressivo maior (de acordo com os critérios do DSM-IV, em tratamento farmacológico para depressão, com escores na Escala de Depressão de Hamilton entre 7 e 20 (depressão leve a moderada, foram divididos em dois grupos. Os pacientes do grupo psicoterápico participaram de quatro sessões individuais de psicoterapia psicodramática e 24 sessões de psicoterapia psicodramática em grupo. Os pacientes do grupo controle não participaram de sessões de psicoterapia psicodramática. Ambos os grupos foram avaliados pela Escala de Depressão de Hamilton e pela Escala de Auto-avaliação de Adequação Social. RESULTADOS: Os pacientes que participaram de sessões de psicoterapia psicodramática apresentaram uma melhora significativa nos escores da Escala de Depressão de Hamilton e da Escala de Auto-avaliação de Adequação Social, comparados aos pacientes do grupo controle. CONCLUSÕES: Os resultados sugerem que a psicoterapia psicodramática individual ou em grupo, associada ao tratamento farmacológico, proporciona bons resultados no tratamento do transtorno depressivo maior.

  4. MICOBIOTA ASSOCIADA À MADEIRA SERRADA DE Eucalyptus grandis HILL EX MAIDEN DURANTE A SECAGEM AO AR LIVRE

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    Paulo Fernando Trugilho

    2006-02-01

    Full Text Available O objetivo principal deste trabalho foi o de acompanhar a secagem ao ar livre da madeira serrada de Eucalyptus grandis conduzida na região de Lavras, MG e identificar a micobiota associada à madeira em diversas fases da secagem. As tábuas foram cortadas de oito toras de 3,0 m de comprimento, oriundas de três árvores, com 27 anos de idade, plantadas em área experimental da UFLA. Dos resultados, pôde-se concluir que a secagem da madeira de Eucalyptus grandis ao ar livre, iniciada em janeiro, consumiu 158 dias até atingir umidade próxima a 12,5%. A curva de secagem foi representada por uma equação logarítmica com coeficiente de determinação (R2 igual a 98,3%. Os fungos causadores de bolores superficiais e de manchas tiveram maior ocorrência no início da secagem. As mais altas freqüências de fungos, verificadas no início da secagem, foram observadas para Penicillium spp. e Pestalotiopsis sp. O fungo Lentinus lepideus ocorreu com maior freqüência no final da secagem.

  5. Biomassa microbiana em amostras de solos secadas ao ar e reumedecidas Microbial biomass in air dried and rewetted soil samples

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    Antônio Samarão Gonçalves

    2002-05-01

    Full Text Available O objetivo do trabalho foi avaliar a viabilidade do condicionamento de amostras como terra fina secada ao ar (TFSA por curto período, para a determinação do carbono da biomassa microbiana (BMS-C, pelo método da fumigaçãoextração, e verificar a respiração microbiana basal (RB do solo. O condicionamento como TFSA, procedendo-se à fumigação para a análise da BMS-C imediatamente ou 24 horas após o reumedecimento, proporcionou valores de BMS-C para os solos Podzólicos, Latossolo Vermelho-Amarelo álico e Orgânico, semelhantes aos valores dos seus controles. Os solos Glei Pouco Húmico e Vertissolo apresentaram valores de BMS-C similares aos do controle a partir de 24 horas de incubação; o solo Planossolo arenoso apresentou valores similares aos do controle com 72 horas, e a Rendizina, com 168 horas de incubação. Na maioria dos solos, a RB determinada na TFSA apresentou valores maiores do que os do tratamento-controle, quando avaliada imediatamente ou 24 horas após o reumedecimento a 60% da capacidade máxima de retenção de água, seguida de queda e manutenção em níveis semelhantes ao do controle nos períodos subseqüentes. O précondicionamento, de curta duração, como TFSA, é promissor para a determinação da BMS-C, quando níveis e períodos adequados de reumedecimento são adotados.The objective of this work was to evaluate the utilization of short term air dried soil samples in a determination of soil microbial biomass (SMB-C, by a fumigationextraction method, and soil microbial basal respiration (BR. Zero time or 24 hours rewetting incubation period before fumigation procedure gave values of SMB-C similar to those of the control for the Podzolic soils, Allic RedYellow Latosol and Organic soil. Low Humic Gley and Vertisol soils gave values of SMB-C similar to those of the control for periods of incubation equal or higher than 24 hours. Planosol (sandy soil and Rendzina soils gave values of SMB-C similar to the

  6. Sistema de aquisição de dados para equipamento de medida da permeabilidade intrínseca do solo ao ar

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    Luciano Roberto da Silveira

    2011-04-01

    Full Text Available A permeabilidade intrínseca - ou simplesmente permeabilidade do solo ao ar - é uma propriedade importante para a identificação de alterações no espaço poroso do solo causadas pelas práticas de manejo, na estimativa de propriedades do solo mais difíceis e onerosas e na composição de modelos de fluxo de fluidos em solos agrícolas e em solos contaminados. O objetivo do presente estudo foi construir um sistema de aquisição de dados (módulo eletrônico e programa computacional para a medida da permeabilidade do solo ao ar em laboratório, utilizando-se materiais disponíveis no local e ferramentas computacionais de acesso livre. O sistema de aquisição de dados mostrou-se bastante preciso na determinação da permeabilidade do solo ao ar, com intervalo de confiança de 9,42 ± 0,085 μm² (95 %, para uma amostra-padrão constituída de partículas com diâmetro de 0,106 a 0,250 mm da fração areia de um Latossolo Vermelho-Amarelo textura média. A estimativa da permeabilidade do solo ao ar, considerando a viscosidade dinâmica do ar em função da temperatura, foi significativamente maior que a estimativa com valor fixo de viscosidade dinâmica em aproximadamente 20 ºC. A medição realizada em uma amostra de solo com estrutura indeformada de um Latossolo Vermelho foi tão precisa quanto à da amostra-padrão, e a estimativa da massa de água removida da amostra foi de 3,27 mg.

  7. Teste de provocação oral aberto na confirmação de alergia ao leite de vaca mediada por IgE: qual seu valor na prática clínica? Open oral food challenge in the confirmation of cow's milk allergy mediated by IgE: what is its value in the clinical practice?

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    Raquel Bicudo Mendonça

    2011-09-01

    Full Text Available OBJETIVO: Revisar os principais protocolos de padronização para o teste de provocação oral aberto aplicado a crianças com suspeita de alergia ao leite de vaca mediada por imunoglobulina E. FONTES DE DADOS: Foram selecionados artigos publicados, nos últimos dez anos, nas bases de dados Medline, Lilacs e SciELO, utilizando-se os descritores de assunto: "hipersensibilidade alimentar", "leite de vaca", "alergia ao leite de vaca", "teste de provocação oral", "crianças" e "diagnóstico". SÍNTESE DOS DADOS: O teste de provocação oral é o método mais fidedigno para estabelecer ou excluir o diagnóstico de alergia alimentar e sua forma aberta pode ser a primeira opção, quando apenas reações objetivas são esperadas. O local para realizar o teste deve possuir todos os recursos para tratamento de emergência. Como preparo, o paciente deve seguir dieta de exclusão do alimento suspeito e descontinuar o uso de medicamentos que possam interferir no resultado do teste. Habitualmente, utilizam-se 8 a 10g de leite em pó ou 100mL de leite fluido, oferecidos em volumes progressivos, a intervalos de dez a 60 minutos. Apesar da rigidez do método, ainda existem situações em que há dificuldade de interpretação dos resultados; por isso, médicos bem treinados devem aplicar o teste, sendo cautelosos ao julgarem as reações. CONCLUSÕES: Mesmo considerando as limitações que dificultam a aplicação do teste de provocação oral na prática clínica, a implementação do teste nos serviços de saúde poderia reduzir diagnósticos falsos-positivos de alergias.OBJECTIVE: To review the main standardization protocols of the open oral food challenge applied to children with suspicion of cow's milk allergy mediated by immunoglobulin E. DATA SOURCE: Medline, Lilacs and SciELO databases were searched for articles published in the last ten years using the following descriptors: "food hypersensitivity", "cow's milk", "cow's milk allergy", "oral food

  8. Ensaio clínico, aberto, controlado sobre a adição de brometo de ipratrópio ao fenoterol no tratamento da crise de asma em adultos Open, controlled clinical assay of the addition of ipratropium bromide to fenoterol in the treatment of acute asthma crisis in adults

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    Solange Diccini

    1999-12-01

    Full Text Available No tratamento da crise de asma, empregam-se doses repetidas de drogas b2-agonistas por via inalatória. O efeito da adição do brometo de ipratrópio (BI ao b2-agonistas é controverso em adultos. OBJETIVO: Avaliar se adição de BI ao fenoterol, em tratamentos inalatórios repetidos, induz a maior broncodilatação, com reversibilidade da crise e alta da emergência em pacientes em crise grave de asma. LOCAL DO ESTUDO: Serviço de Pronto-Atendimento de Pneumologia, Disciplina de Pneumologia da Unifesp-Hospital São Paulo, no período de julho de 1995 a fevereiro de 1997. TIPO DE ESTUDO: Aberto, randomizado, paralelo. Alta da emergência determinada pelo VEF1 e PFE > 60% do previsto. CASUÍSTICA E MÉTODOS: Cento e vinte pacientes em crise de asma foram divididos em dois grupos (N = 60: fenoterol (F e brometo de ipratrópio + fenoterol (BIF com VEF1 e PFE Repeated dosis of inhaled b2-agonists have been used in the treatment of acute asthma. The effect of added ipratropium bromide (IB to b2-agonist is controversial in adults. OBJECTIVE: To evaluate if addition of IB to fenoterol, in repeated doses, induces a greater bronchodilation, a greater reversion of the attack, and discharge from emergency unit in adults with acute severe asthma. SETTING: Pneumology Emergency Department, Unifesp-Hospital São Paulo, in the period from July 1995 to February 1997. TYPE OF STUDY: Open, randomized and parallel study. Discharge from the hospital: FEV1 and PEF > 60% of the predicted value. METHODS: 120 patients with FEV1 and PEF < 50% of the predicted value were divided into two groups (N = 60: fenoterol (F and ipratropium bromide + fenoterol (IBF. Each group received inhalation treatment through a metered-dose inhaler (MDI attached to a holding chamber, administered at 30-minute interval, for a total of three treatments. In the group F four puffs of fenoterol (400 mg were administered, and in the IBF group, 160 mg of BI and 400 mg of fenoterol (four puffs

  9. Uma análise de aspectos relacionados ao desenvolvimento e adoção de Enterprise Resources Planning livre de código aberto An analysis of aspects related to the development and adoption of free open source Enterprise Resources Planning

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    Rogério Atem de Carvalho

    2009-12-01

    Full Text Available Sistemas Integrados de Gestão ou Enterprise Resources Planning - ERP possibilitam o processamento das informações necessárias em uma empresa usando um único banco de dados. Muito tem se escrito sobre este tipo de software, abordando questões como o alto custo da aquisição de licenças, e a dependência de consultoria para a sua adaptação e implantação nas empresas. Atualmente vem crescendo o desenvolvimento e uso de ERP Livre de Código Aberto (FOS-ERP. Porém verifica-se que este tipo de sistema ainda não é suficientemente explorado, mesmo no meio acadêmico. Este artigo relata alguns trabalhos publicados sobre o assunto e levanta questões que devem ser tratadas por pesquisadores e demais interessados para adequar e viabilizar o uso desses sistemas conforme a realidade nacional. Assim, após uma introdução ao tema, são apresentadas algumas diferenças entre o FOS-ERP e seus equivalentes proprietários (Proprietary ERP ou P-ERP em termos de modelos de negócios, seleção, customização e evolução. Em seguida são elencados alguns desafios e oportunidades que o FOS-ERP pode oferecer a usuários, fornecedores, pesquisadores e colaboradores individuais. Concluindo, este artigo busca ampliar a discussão sobre FOS-ERP, destacando fatores tais como seu potencial de inovação tecnológica e estratégias de negócios.Enterprise Resources Planning (ERP enables the processing of information required in an enterprise, using a single database. Much has been written about this type of software, addressing issues such as the high cost of licenses acquisitions, and the dependence on consultants for its adaptation and implementation in companies. Currently the development and use of ERP Free Open Source (FOS-ERP has increased. However, this type of system is still not sufficiently explored, even in academia. This article analyses some papers on the subject, and raises questions that must be addressed by researchers and other stakeholders

  10. A eficácia do milnaciprano em pacientes ambulatoriais com transtorno depressivo maior não respondedores ao tratamento com ISRSs: um estudo aberto de 12 semanas Efficacy of milnacipran in outpatients experiencing major depression non respondent to SSRIs: a 12-week open study

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    Marcelo P. Fleck

    2010-01-01

    Full Text Available CONTEXTO: O objetivo deste estudo é avaliar a eficácia do milnaciprano em pacientes ambulatoriais com depressão maior grave que não respondem em tempo e em dosagem adequados à terapia com ISRSs. MÉTODOS: Um estudo aberto multicêntrico com a duração de 12 semanas foi elaborado para avaliar a eficácia do milnaciprano após falha em um experimento com ISRS. Remissão completa (HAMD-17 50%, CGI e avaliação da qualidade de vida (WHOQOL-Bref. RESULTADOS: O escore HAMD-17 médio da amostra foi de 27 (7,2. As taxas de remissão com o milnaciprano foram de 17,5%, e as de resposta, 61,3%. Na linha de base, 70,9% dos pacientes foram classificados como gravemente sintomáticos. Ao final do tratamento, 48,1% dos pacientes foram classificados como normais assintomáticos ou sintomáticos limítrofes e 20,2% eram moderadamente sintomáticos. Além disso, os quatro domínios do WHOQOL-Bref, um instrumento genérico de mensuração de qualidade de vida, apresentou diferenças clínicas e estatísticas: CONCLUSÃO: Nossos resultados sugerem que o milnaciprano é uma possível opção para pacientes que não respondem a ISRSs. Uma vez que não há evidências na literatura de um antidepressivo que seja a melhor opção quando um ISRS falha, o uso do milnaciprano deveria ser considerado em casos de pacientes com depressão severa.BACKGROUND: The objective of this study is to evaluate the efficacy of milnacipran in outpatients experiencing severe MDD non-respondent to adequate time and dosing of SSRI therapy. METHODS: A 12 week multi-centric study open study was designed to evaluate the efficacy of milnacipran after a SRRI trial failure. Complete remission (HAMD-17 50%, CGI and quality of life measure (WHOQOL-Bref. RESULTS: The mean HAMD-17 score of the sample was 27 (7.2. The remission rates for minalcipran were 17.5% and response 61.3%. At baseline, 70.9% of the patients were markedly or severely ill. At treatment end, 48.1% of the patients were normal

  11. Espectroscopia de candidatos a remanescentes de aglomerados abertos

    Science.gov (United States)

    Pavani, D. B.; Bica, E.; Ahumada, A. V.; Clariá, J. J.

    2003-08-01

    A pesquisa sobre remanescentes de aglomerados abertos tem despertado grande interesse. Seguindo esta tendência encontramos estudos teóricos e observacionais. Os primeiros baseiam-se em simulações numéricas buscando determinar fração de binárias e distâncias galatocêntricas, tempo de vida e conteúdo estelar. Estes estão relacionados à função inicial de massa e densidade de estrelas, ou seja, se ricos ou pobremente povoados, compactos ou esparsos. No caso observacional procuram-se identificar os remanescentes considerando-se que trazem estas assinaturas de seus percursores. No presente estudo empregamos espectroscopia para analisar oito concentrações pobremente povoadas, previamente classificadas como aglomerados abertos, sendo sete compactas e uma esparsa. As observações foram obtidas através do telescópio de 2,15 m do CASLEO em San Juan, Argentina, em turnos entre 2001 e 2003. Utilizamos uma câmara CCD contendo um chip Tektronics de 1024X1024 pixeis aliado a um espectrógrafo REOSC. O domínio espectral vai de 3700 a 7000 Å. As reduções foram realizadas no Observatório Astronômico de Córdoba (Argentina) usando pacotes IRAF padrões. Determinamos idades, avermelhamentos e tipos espectrais através de comparações com biblioteca de estrelas e de aglomerados. Em alguns casos nossos espectros estavam dominados por estrelas individuais às quais determinamos seus tipos espectrais. Aos oito objetos adicionamos mais cinco da literatura recente analisados via espectro ou diagrama cor-magnitude. O histograma resultante contém idades típicas entre 0.5 e 3 Ganos. Considerando que predominantemente estes objetos encontram-se na vizinhança solar e, portanto, não cruzaram muitas vezes o plano Galático esperamos que a diferença no tempo necessário para dissolução destes prováveis remanescentes seja em função de diferentes massas iniciais.

  12. EFEITOS DO CAPITAL INTELECTUAL SOBRE O DESEMPENHO FINANCEIRO EM COMPANHIAS DE CAPITAL ABERTO

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    Maria Margarete Baccin Brizolla

    2015-06-01

    Full Text Available O objetivo deste estudo foi identificar a influência do Capital Intelectual, medido pelo Valor agregado do Capital Intelectual (VACI sobre o desempenho financeiro em companhias de capital aberto. A classificação do estudo no que se refere aos objetivos é uma pesquisa descritiva, em relação aos procedimentos classifica-se como documental e a abordagem refere-se à análise quantitativa. A investigação que permeia este estudo envolve as características relacionadas ao capital intelectual, em 166 companhias listadas na BM&FBovespa, compondo a amostra no período de 2013. Os dados foram coletados na base de dados Economática®. Quanto à técnica estatística foi utilizada a Correlação Canônica. Os resultados da pesquisa demonstram que o capital intelectual influência significativamente o desempenho financeiro, em companhias de capital aberto.

  13. Carta ao Leitor

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    Equipe Editorial RMCEAD

    2015-06-01

    Full Text Available Aos Leitores Caríssimos leitores, Com grande entusiasmo, apresentamos a mais nova edição da Revista Multitexto do CEAD/Unimontes. Esta edição conta com 12 novos trabalhos que, sob um prisma transdisciplinar de reflexões, tecem suas leituras e arranjos metodológicos incidindo sobre as ciências e a realidade, seu teor e proposta. Trata-se de artigos originais e de revisão que promovem um diálogo aberto com o mundo contemporâneo. O estado da arte de diversas linhas temáticas foram selecionados para que a comunidade científica possa celebrar o conhecimento dispensado nas páginas materiais e virtuais desse periódico em crescimento. Em seu terceiro ano de experiências em coligir e abrigar estudos de recorte interdisciplinar, com enfoque especial ao rol de temáticas da Educação a Distância, a Revista Multitexto adquire mais entusiasmo. Entusiasmo para se debruçar sobre textos que se expandem sobre o cotidiano e integram os caminhos acadêmicos aos caminhos da vida. Você será capaz de imergir em pesquisas e perspectivas que celebram o conhecimento como ferramenta de transformação da realidade. E, como costumeiro deste periódico, equipe editorial e instituição, trata-se da celebração de uma paixão inveterada pelo conhecimento. A jornada deste periódico caminha para a maturação de seus autos e de motivações originárias. É cada vez mais seguro o ensejo pela pesquisa nesta instituição de salvaguarda e é cada vez mais expressivo o esforço conjunto para que o conhecimento através de múltiplos textos – como propõe a denominação deste periódico – transpasse a realidade com frutos e benefícios amplos. Aprecie as colaborações da presente edição e junte-se neste tráfego do conhecimento, no qual o mundo hoje se move. Com grande estima, Equipe Editorial

  14. Jovem aprisionado em regime semi-aberto: um estudo transdisciplinar

    OpenAIRE

    Lazzaron, Leandra Regina

    2008-01-01

    A presente dissertação, vinculada à linha de pesquisa “Criminologia e Controle Social”, do Programa de Pós-Graduação em Ciências Criminais, da Faculdade de Direito da Pontifícia Universidade Católica do Rio Grande do Sul, identifica o perfil do jovem apenado, aprisionado em regime semi-aberto, no Instituto Penal de Viamão, com base na escala PCL-R. O estudo de campo foi realizado na instituição prisional e avaliou 40 jovens, com idade de 18 a 23 anos, que cumprem pena em regime semi-aberto. O...

  15. Relação entre baixo peso ao nascer e a poluição do ar no Município de São Paulo

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    Andréa Medeiros

    2005-12-01

    Full Text Available OBJETIVO: A poluição do ar tem sido investigada como possível determinante do baixo peso ao nascer. O objetivo do estudo foi verificar o efeito da poluição do ar sobre o peso ao nascer. MÉTODOS: Foram analisados todos os partos de mães residentes no Município de São Paulo, nos anos de 1998 a 2000. Estimaram-se as prevalências de baixo peso ao nascer conforme características do recém-nascido, da mãe e do parto. Apenas os distritos mais centrais de São Paulo foram incluídos, totalizando uma amostra de 311.735 nascimentos. Para avaliação do efeito da poluição do ar foram excluídos os prematuros, gemelares e analisados somente os nascimentos das áreas mais centrais da cidade. Os elementos poluentes analisados foram ozônio (O3, dióxido de enxofre (SO2, dióxido de nitrogênio (NO2, partículas em suspensão (PM10 e monóxido de carbono (CO. O efeito da exposição materna à poluição do ar no peso ao nascer foi avaliado por meio de regressão linear e logística. RESULTADOS: Do total analisado, 4,6% dos recém-nascidos apresentaram menos de 2.500 g ao nascer. A exposição materna ao CO, PM10 e NO2 durante o primeiro trimestre de gestação mostrou associação estatisticamente significante com a diminuição no peso do recém-nascido. CONCLUSÕES: Os resultados reforçam que a exposição materna à poluição do ar no primeiro trimestre de gestação pode contribuir para o menor ganho de peso do feto.

  16. Análise econômica do Sistema Intensivo de Suínos Criados ao Ar Livre Economic analysis of an Outdoor Pig Production System

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    Denyse Maria Galvão Leite

    2001-04-01

    Full Text Available Foi instalado um Sistema Intensivo de Suínos Criados ao Ar Livre (SISCAL, na Estação Experimental de Pato Branco do Instituto Agronômico do Paraná, com o objetivo de determinar os custos de implantação e produção deste sistema, na região Sudoeste do Paraná. A área do SISCAL foi dimensionada para um plantel de 14 matrizes e um reprodutor, a qual foi dividida em piquetes para separar os animais por estágios fisiológicos (reprodução, gestação e creche. O custo de implantação foi baseado nos custos de mão-de-obra e dos materiais utilizados para instalação do sistema e confecção de alguns equipamentos, como também os custos da construção da fábrica e depósito de ração e dos equipamentos para confecção das rações.O custo total de implantação do SISCAL, excluindo o valor da terra, foi de US$ 6862,80, ou seja, US$ 490,20 por matriz instalada, em julho de 1997. A construção e os equipamentos da fábrica de ração foram os itens mais caros do custo de implantação. O custo total de produção por kg de leitão desmamado produzido foi US$ 0,617, em junho de 1999. Neste período, foi possível obter 18,81% de lucro líquido por kg de leitão produzido.An Outdoor Pig Production System (SISCAL, at the Experimental Station Agronomic Institute of Paraná State was used with the objective to determine the establishment and production costs of this system in the Southwestern region of Paraná. The SISCAL area was dimensioned to a 14 sows and one boar herd, which was divided in paddocks to separate the animals per physiological stage (reproduction, gestation and nursery. The establishment cost was based on the labor, material used for the system installation and the manufacturing of some equipment, as well as the feed plant and storage construction costs and equipments for the ration production. The total establishment observed cost of the SISCAL, excluding capital value of land, was of US$ 6862.80 or US$ 490.20 per housed

  17. Determinação analítica da performance da irrigação por sulcos abertos e em declive

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    Aristides Fraga Lima Filho

    2015-06-01

    Full Text Available Uma solução analítica foi desenvolvida, para avaliar sulcos abertos e em declive, com base na teoria de Balanço de Volume de Walker e Skogerboe (1987. Essa metodologia é capaz de obter, matematicamente, a performance de um sistema, dispensando a construção de gráficos que definem os parâmetros de avaliação. A solução matemática é baseada no ajuste de equações ao modelo potencial, no cálculo das áreas sob as curvas definidas no ajuste e na intercessão de curvas, obtendo-se, assim, a performance de sistemas de irrigação por sulcos abertos e em declive. Para validação da metodologia, foi realizado um experimento de campo, na Fazenda Experimental da Universidade Federal do Ceará, situada no município de Pentecoste, pertencente ao Centro de Ciências Agrárias. Os dados de campo foram submetidos à análise pelas duas metodologias. Os resultados mostraram que a metodologia analítica pode ser usada para avaliar a irrigação por sulcos abertos e em declive.

  18. Parâmetros hematológicos e bioquímicos da tilápia-do-Nilo (Oreochromis niloticus L. sob estresse por exposição ao ar

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    Roberta Dias da Silva

    2012-12-01

    Full Text Available No presente trabalho avaliaram-se os parâmetros hematológicos e bioquímicos de exemplares adultos de tilápias (Oreochromis niloticus sob a influência do fator estresse fisiológico em animais submetidos à exposição ao ar durante a engorda em sistema raceway. Foram analisados o eritrograma, teor de hemoglobina, volume globular, o volume corpuscular médio (VCM, a hemoglobina corpuscular média (HCM, a concentração de hemoglobina corpuscular média (CHCM, o leucograma, contagem diferencial de leucócitos, o plaquetograma, a glicose, a proteína total, o colesterol, o triglicerídeo e os eletrólitos (cálcio, cloretos, sódio e potássio. Os resultados revelaram que houve uma homogeneidade de distribuição para hemácias, volume globular, hemoglobina, índices hemantimétricos, proteína total, glicose, colesterol, e íons séricos, indicados pelos valores relativamente baixos do coeficiente de variação. Houve correlação positiva somente para leucócitos totais, células de defesa orgânica (neutrófilos e linfócitos, glicose, colesterol, sódio e cálcio. Quanto ao leucograma, à medida que os animais foram expostos ao ar, o número de leucócitos diminuiu gradativamente (leucopenia, ocorrendo simultaneamente neutrofilia e linfopenia. O índice glicêmico constituiu um bom indicador de estresse fisiológico, devido à hiperglicemia (82,0±20,88mg/dL demonstrada nos tratamentos. A exposição ao ar constituiu um fator de desequilíbrio na homeostase iônica, e na síntese de colesterol endógeno. Entretanto, o tempo de recuperação não ocasionou a completa reabilitação fisiológica frente ao desafio imposto.

  19. Alterações bromatológicas nas silagens de milho submetidas a crescentes tempos de exposição ao ar após "desensilagem"

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    Velho João Pedro

    2006-01-01

    Full Text Available O experimento foi conduzido em delineamento completamente casualizado, com o objetivo de avaliar os efeitos da exposição de uma silagem ao ar por zero, 12, 24 e 36 horas após a "desensilagem". A ensilagem de um cultivo de milho "safrinha" foi realizada no dia 18/05/2004 em mini-silos com capacidade de 30 litros, com quatro repetições por tratamento, quando os grãos de milho se encontravam no estádio fraction one-half leitoso fraction one-half farináceo. Os diferentes tempos de exposição ao ar após a "desensilagem" afetaram significativamente (P<0,05 o teor de fibra em detergente neutro, corrigido para cinzas e proteínas, e o teor de lignina em ácido sulfúrico. Não houve efeito nos carboidratos não estruturais e nas frações nitrogenadas. Conclui-se que um período de 12 horas de aerobiose, após a "desensilagem", afeta o valor nutritivo das silagens de milho.

  20. Do modernismo ao alívio pós-moderno

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    Simone Regina Dias

    2003-06-01

    Full Text Available Ao traçar um mapeamento dos elementos fundantes da grande crise mundial que se instaurou desde 1789, no livro Crítica e crise, Reinhart Koselleck sustenta: Pertence à natureza da crise que uma decisão esteja pendente mas ainda não tenha sido tomada. Também reside em sua natureza que a decisão a ser tomada permaneça em aberto. Portanto, a insegurança geral de uma situação crítica é atravessada pela certeza de que, sem que se saiba ao certo quando ou como, o fim do estado crítico se aproxima. A solução possível permanece incerta, mas o próprio fim, a transformação das circunstâncias vigentes — ameaçadora, temida ou desejada —, é certo. A crise invoca a pergunta ao futuro histórico. As constatações de Koselleck apontam para o reconhecimento de um estado de crise permanente do mundo. Isto é, um olhar focado em determinado momento da história poderia extrair, em tempos diversos, um quadro em que se detecta a crise, um estado de incertezas.

  1. Estresse em pacientes com glaucoma primário de ângulo aberto

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    Maira Santos Marinho Moura

    Full Text Available Glaucoma Primário de Ângulo Aberto (GPAA é uma importante causa de cegueira no mundo. O presente trabalho teve como objetivo investigar: (1 presença e tipo de estresse; (2 relação do número de colírios e estresse; (3 percepção do glaucoma e tratamento. Um estudo transversal e quantitativo foi realizado com 102 pacientes do Ambulatório de Oftalmologia do HC-FMUSP, com roteiro temático e Inventário de Sintomas de Estresse de Lipp. A maioria dos pacientes apresentou estresse (65,7% e não houve correlação entre estresse e número de colírios. "Tempo de tratamento", "dificuldades na vida diária" e "dificuldades em pingar o colírio" foram variáveis independentemente associadas ao estresse. Conclui-se que o estresse pode interferir negativamente no enfrentamento da doença em pacientes com GPAA.

  2. Resposta do cafeeiro arábica ao magnésio em solos fertilizados com altas doses de potássio

    OpenAIRE

    Pedro Paulo de Carvalho Teixeira

    2016-01-01

    O aumento das doses de potássio (K) para atender a demanda nutricional desse nutriente em cafezais produtivos induz a deficiência de Mg. Esta pesquisa foi realizada com o objetivo de compreender como a classe de solo interfere na interação entre esses nutrientes (K e Mg), de maneira que a aplicação de alta dose de K não afete a nutrição da planta em relação ao Mg. Dois experimentos foram conduzidos em duas classes de solo: Latossolo, com textura muito argilosa, em Machado-MG, e Argissolo, com...

  3. Caracterização bioclimática de sistemas ao ar livre e confinado para a criação de matrizes suínas gestantes Bioclimatic characterization of outdoor and confined systems for pregnant sows

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    Aérica C. Nazareno

    2012-01-01

    Full Text Available O confinamento de matrizes suínas foi criado com o intuito de maximizar a produtividade; entretanto, existem problemas relacionados ao bem-estar animal. Objetivou-se avaliar a criação de matrizes suínas gestantes no sistema de confinamento e ao ar livre, com relação ao ambiente térmico e às respostas fisiológicas. O experimento foi realizado em Monte Mor/SP. A avaliação fisiológica foi realizada por meio do registro das variáveis: frequência respiratória e temperatura de pele. Foram registradas as variáveis meteorológicas: temperatura de bulbo seco, temperatura de bulbo úmido e temperatura de globo negro, caracterizando o ambiente por meio da entalpia e índice de temperatura de globo e umidade. Foram utilizados seis animais por tratamento. O delineamento experimental foi inteiramente casualizado em parcelas subdivididas, e as médias comparadas pelo teste de Tukey. As variáveis fisiológicas e meteorológicas apresentaram valores superiores no confinamento. O sistema de criação ao ar livre potencializou as trocas térmicas entre os animais e o ambiente, o que refletiu em menor estresse por calor observado nos animais.Pregnant sows confinement systems were created in order to maximize the productivity, however there are problems concerning the animal welfare. The aim of this research was to evaluate pregnant sows in outdoors and in confinement systems in relation to the thermal environment and physiological animal responses. The experiment was conducted in a commercial farm in Monte Mor city, São Paulo, Brazil. The physiological evaluation was performed by recording physiological variables, such as respiratory frequency and skin temperature. Furthermore, variables like dry bulb temperature, wet bulb temperature, and black globe temperature were also evaluated to characterize the ambient by means of enthalpy and black globe humidity index. In each treatment six animals were evaluated. The experimental design was completely

  4. Preferência manual de crianças ao alcançar objetos de tamanho e rigidez diferentes Infants' and toddlers' hand preference in reaching objects of different size and rigidity

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    Suellen A. Bottesini

    2010-09-01

    Full Text Available O estudo teve por objetivo analisar a preferência manual de crianças ao alcançar objetos de diferentes tamanhos nas idades de 4, 6, 8 e 36 meses. Para tanto, nove crianças saudáveis foram posicionadas em uma cadeira reclinada para trás a 50º com a horizontal e a elas foram apresentados quatro objetos de rigidez e tamanhos distintos. Foram coletados longitudinalmente 524 alcances aos 4, 6, 8 e 36 meses, sendo analisadas as variáveis mão preferida no alcance e índice de contribuição para os alcances bimanuais. Constatou-se que a mão preferida no alcance no decorrer dos meses foi a direita e que somente aos 6 meses o tamanho dos objetos influenciou a preferência manual: as crianças fizeram preferencialmente alcances com a mão direita para objetos pequenos, e mão esquerda para os grandes. Nos alcances bimanuais, constatou-se que, em geral, a mão que primeiro toca o objeto é a mão mais ativa durante todo o movimento de alcançar. Provavelmente porque a rigidez seja menos visualmente percebida do que o tamanho, só este influencia o alcance aos 6 meses, idade em que o lactente refina o movimento de alcance. O tamanho o influencia aos 6 meses, idade em que o movimento de alcançar se encontra em fase de refinamento: objetos pequenos que exigem maior precisão foram alcançados com a mão direita (mão preferida; e objetos grandes, que não exigem precisão para serem apreendidos, foram alcançados com a mão esquerda.The purpose of this study was to analyse infants' and toddlers' manual preference in reaching objects of different sizes and rigidity at the ages of 4, 6, 8, and 36 months. Four objects of different size and stiffness were presented to nine healthy infants leaning on a chair at 50º. A total of 524 reaching movements were analysed longitudinally to verify manual preference and the index of contribution of each hand for bimanual reaching. Results showed preference of the right hand for reaching objects; only at the age

  5. Biomassa microbiana em amostras umedecidas após secagem ao ar de solos de toposeqüência de pastagens Microbial biomass in air dried and moisturized soil samples from toposequences of pasture

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    Antonio Samarão Gonçalves

    2007-07-01

    Full Text Available Neste experimento avaliou-se o carbono da biomassa microbiana do solo (C-BMS em diferentes solos sob topossequência de pastagem e a viabilidade de utilizar amostras condicionadas na forma de terra fina seca ao ar (TFSA. Observou-se para C-BMS, separação dos conteúdos entre os diferentes tipos de solo. A época de inverno favoreceu a C-BMS, elevando-se em 60% em relação ao verão. Na comparação realizada entre os solos preparados na forma de TFSA e com a metodologia de fumigação-extração não se detectou diferença significativa, encontrando-se correlações significativas para os dois métodos de preparo das amostras, o que estabelece um panorama promissor no uso desta metodologia, embora seja necessário maior aprofundamento neste aspecto.In this experiment we evaluated microbial biomass carbon (C-SMB from different soils under toposequences of pasture and the viability of the use of air dried soil samples (ADSS. C-SMB showed separation of values between different soil types. Winter season favored C-SMB being 60% higher in relation to summer. In comparison between the two soil sample preparation methods, ADSS and the classical one, there was no statistical. Significant correlations were observed between the two methods. This gives a positive perspective to the use of this new approach, even thought more study is necessary.

  6. Ars disyecta Ars disyecta

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    Alejandra Castillo

    2012-07-01

    Full Text Available Bajo la nominación Ars Disyecta se busca exponer el vínculo entre artes visuales, feminismo y metamorfosis. Las prácticas artísticas feministas aquí presentadas se proponen perturbar el espacio metafórico heredado de la diferencia sexual (pensemos, por ejemplo, en las palabras engendramiento, matriz, vida, compenetración o invaginamiento. En este sentido, la nominación Ars disyecta pone en escena un conjunto de prácticas e intervenciones que intentan interrumpir la matriz de la diferencia, desestabilizando lo femenino desde aquellas figuras que se resisten a la lógica de la totalidad y de un tiempo propio. Buscando seguir la huella de un arte disyecto es que interrogaré en este ensayo aquellas autorías feministas que en el arte contemporáneo trafican con las huellas del contagio, la mutación y la alteridad.This article aims to present the relation between visual arts, feminism I and metamorphosis. The feminist artistic practices portrayed in this article attempt to question categories inherited from the metaphor of sexual difference such as engendering, matrix and life. From this perspective, Ars disyecta will establish a set of artistic practices and interventions that intend to interrupt the proper idea of «feminine difference». Following this line of argument, I will discuss in this article a few contemporary feminist works of art that could be defined by words such as contagious, mutation and otherness.

  7. Julgamento de colinearidade e percepção de distância exocêntrica em campo aberto

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    Javier Enrique Santillán

    2011-01-01

    Full Text Available O propósito foi investigar experimentalmente o desempenho dos observadores numa original tarefa de julgamento de colinearidade em campo aberto (dimensões 20 x 30 m. Participaram do experimento 30 observadores. Os estímulos foram estacas verticais de alturas variáveis, quatro fixos e quatro móveis. A tarefa consistiu em ajustar os dois estímulos móveis (mediante controle à distância para que ficassem colineares aos dos estímulos fixos nos extremos de cada diagonal. Foi realizada uma análise de variância (ANOVA fatorial sobre os erros de colinearidade, revelando somente efeito significativo para o fator ‘Estímulo Móvel’ (F(3,473=69,86 p<0,001 notando-se uma sistemática na distribuição dos erros. As pequenas variações na distância exocêntrica percebida (com erros constantes dez vezes menores que os encontrados ao avaliar as distâncias egocêntricas e a relação dos erros cometidos com as distâncias egocêntricas indicariam que o marco de referência eliciado por esta tarefa de colinearidade, embora possa estar baseado nos indícios exocêntricos, é escalado por um fator egocêntrico.

  8. Otimização econômica de explotações a céu aberto

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    Frederico Augusto Rosa do Carmo

    2006-09-01

    Full Text Available A determinação dos limites da cava final de qualquer projeto de mineração é um dos maiores desafios de um projeto de mineração. Tais limites precisam ser definidos já no início dos trabalhos de planejamento de lavra e devem ser reconsiderados, novamente e rotineiramente, durante toda a vida útil da mina. Um dos propósitos do plano de exaustão de minas a céu aberto é determinar a cava final ótima, baseando-se em um modelo econômico sujeito a restrições técnicas e visando à maximização do valor atual líquido do projeto. O primeiro algoritmo específico relacionado ao tema foi publicado por Lerchs e Grossmann (1965. O algoritmo de Lerchs e Grossmann tem sido aceito como padrão de teste em comparação com outros algoritmos equivalentes, que têm sido propostos, porque ele resolve o problema correspondente, segundo a teoria dos grafos, ao corte mínimo e fluxo máximo. Outros algoritmos de otimização de cavas finais de minas a céu aberto também são apresentados nesse trabalho. Além disto, um programa acadêmico para a otimização de cavas foi desenvolvido pelos autores sendo que os fundamentos deste são apresentados no presente artigo.The determination of the final pit limits of any mining project is one of the most important challenges in a mining project. Such limits need to be defined at the beginning of the mine planning and should be reconsidered, again and routinely, during all the useful life of a mine. One of the purposes of the open pit mine exhaustion plan is the determination of the optimal final pit, based on an economic model subject to technical restrictions and aimed to maximize the net present value. LERCHS e GROSSMANN (1965 published the first specific algorithm related to the theme. This algorithm has been accepted as standard in comparison to other equivalent algorithms which have been proposed, because it solves the corresponding problem, according to the graph theory, of the minimum cut and

  9. Análise eletromiográfica de músculos do membro inferior em exercícios proprioceptivos realizados com olhos abertos e fechados

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    Daniela Cristina Silveira de Oliveira

    2012-08-01

    Full Text Available INTRODUÇÃO: A propriocepção é um termo utilizado para descrever todas as informações neurais originadas nos proprioceptores das articulações, músculos, tendões, cápsulas e ligamentos, que são enviadas por meio das vias aferentes ao sistema nervoso central. A eletromiografia (EMG é o estudo da função muscular por meio da averiguação do sinal elétrico que emana do músculo, sendo também, o estudo da atividade da unidade motora. OBJETIVO: Realizar uma análise eletromiográfica dos músculos reto femoral (RF e tibial anterior (TA, em diferentes exercícios proprioceptivos (disco de Freeman-DIS e balancim-BAL com os olhos abertos (OA e fechados (OF. MÉTODOS: A análise foi realizada com 10 indivíduos do gênero masculino, fisicamente ativos, em um tempo de coleta de 10 segundos em cada aparelho tanto com olhos abertos como fechados. RESULTADOS: De acordo com nossos achados, observamos uma diferença significativa quando os exercícios proprioceptivos são realizados com olhos abertos e olhos fechados, obtendo uma ativação muscular maior, de acordo com a análise eletromiográfica, nos exercícios com olhos fechados, ressaltando a importância do sistema visual e como ele interfere na posição do corpo quando este é submetido a variações de equilíbrio causadas pelos aparelhos pesquisados. CONCLUSÃO: Concluímos que o músculo reto femoral não apresentou diferenças significativas evidentes entre os aparelhos balancim e disco de Freeman, assim como quando o exercício era realizado com os olhos abertos ou fechados. A diferença significativa ocorrida foi entre o balancim OA e OF e entre balancim OA e disco de Freeman OF. Já o músculo tibial anterior, apresentou diferenças significativas maiores, principalmente com os olhos fechados, independente do aparelho, os quais não apresentaram diferenças significativas entre eles.

  10. EPIDEMIOLOGICAL ASPECTS OF A FOCUS OF Tunga penetrans INFESTATION IN OUTDOOR PIG PRODUCTION ASPECTOS EPIDEMIOLÓGICOS DE UM FOCO DE TUNGÍASE (Tunga penetrans, SIPHONAPTERA EM UM SISTEMA INTENSIVO DE SUÍNOS CRIADOS AO AR LIVRE

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    Doralice Pedroso de Paiva

    2007-09-01

    Full Text Available

    The outdoors intensive-type pig production is characterized by maintaining swine during reproductive, pregnancy and nursing periods on pasture limited by wiring and/or electric fences. The aim of the present report was to describe the epidemiological aspects of an outbreak of Tunga penetrans in an outdoor pig production system. A total of six mature boars, 9 lactating sows, 13 pregnant sows, 9 mating sows, 20 suckling pigs and 34 weaned pigs were clinically examined. None of the boars were infested, while 50% of all sows examined had the parasite lesions, most frequently observed in the breast area, thus resulting in agalactia in lactating sows due to obstruction of the galactophorus channel, with subsequent involution of the mammary gland. In 90% of suckling piglets walking difficulty was observed, caused by the presence of the parasite in the hoofs, with 25% of these animals also showing hock lesions (farm number 1, n = 48. Similar lesions were observed in 100% of 40-47 days old weaned pigs (farm number 2, n = 24 and in 80% of 70 days old weaned pigs (farm number 3, n = 10, all of which had been transferred to finishing units in a confinement system. Therefore we conclude that Tunga penetrans can infest pigs reared or kept outdoors, causing agalactia in lactating sows, and walking disorders in suckling and weaned pigs.

    KEY-WORDS: Chiggers, agalactia in sows; outdoors pig production.

    O sistema intensivo de produção de suínos criados ao ar livre (SISCAL é caracterizado por manter os suínos em piquetes com cobertura vegetal, nas fases de reprodução, maternidade e creche, cercados com tela e/ou fios de arame eletrificado. Este trabalho teve por objetivo relatar

  11. Exposição ao mercúrio e ao arsênio em Estados da Amazônia: síntese dos estudos do Instituto Evandro Chagas/FUNASA Exposure to mercury and arsenic in Amazon States: a summary of studies by the Evandro Chagas Institute/FUNASA

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    Elisabeth C. de Oliveira Santos

    2003-06-01

    Full Text Available Este artigo é uma revisão das pesquisas da Seção de Meio Ambiente do Instituto Evandro Chagas/FUNASA sobre exposição ao mercúrio (Hg no vale do rio Tapajós e Estado do Acre, e exposição ao arsênio (As através de resíduos da exploração de manganês (Mn realizada pela ICOMI deixados no Porto de Santana-AP. Em relação ao mercúrio, têm sido pesquisadas populações sob risco através da via respiratória ou alimentar. No primeiro caso, os trabalhadores de casas de compra e venda de ouro têm apresentado teores mais elevados de Hg em urina do que os garimpeiros estudados. No segundo caso, as populações ribeirinhas têm mostrado níveis diferenciados de exposição (Hg em cabelo. Comunidades ribeirinhas situadas em áreas não afetadas pelo mercúrio da garimpagem e com hábitos alimentares semelhantes às de área de risco têm sido avaliadas, visando a construção de parâmetros de normalidade regional. São também pesquisados os teores de Hg em materiais ambientais e na biota aquática. Os estudos de saúde humana e ambiente na cidade de Santana-AP objetivaram avaliar as fontes e possíveis vias de exposição da população da comunidade do Elesbão ao arsênio. Verificou-se a existência de fonte de risco através dos rejeitos de Mn, porém os níveis de As na água consumida pela população mostraram-se dentro dos parâmetros de normalidade. As médias encontradas em sangue e cabelo coincidem com médias de normalidade referidas na literatura, em populações não expostas, e as associações entre variáveis epidemiológicas, avaliação clínico-laboratorial e os teores de arsênio não mostraram significância estatística.This article is a review of the studies carried out by Environmental Section of the Evandro Chagas Institute/FUNASA on mercury (Hg exposure in the Tapajós river basin, and arsenic exposure (As due to residues of the manganese (Mn exploration, performed by ICOMI and left at the port of Santana

  12. Grau de exposição a praguicidas organoclorados em moradores de aterro a céu aberto

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    Eladio Santos Filho

    2003-08-01

    Full Text Available OBJETIVO: Estimar o grau de exposição interna aos praguicidas organoclorados (POP dos moradores de um atêrro a céu aberto. MÉTODOS: Estudo observacional, de aferição simultânea e controlado, cujo fator de estudo foi residir em área contaminada por POP e o efeito foi a concentração sanguínea dessas substâncias. A população de estudo foi de 238 pessoas residentes em um aterro a céu aberto (Pilões, no município de Cubatão, SP; e a população de controle ficou dimensionada em 258 pessoas, também residentes no mesmo município (Cota 200. Foram analisados os praguicidas HCB, p-p'DDT, p-p'DDE, p-p'DDD, o-p'DDT, a HCH; b HCH; g HCH; Aldrin; Dieldrin; Endrin; Heptaclor; Heptaclor-epoxi e Mirex. RESULTADOS: Os teores médios sangüíneos de HCB em Pilões foram de 4,66 µg/L, 155 vezes maior que a média na Cota 200 (0,03 µg/L. Em Pilões, os teores médios de DDT total foram de 3,71 µg/L, duas vezes maior do que na Cota 200 (1,85 µg/L e o HCH total apresentou concentrações sangüíneas seis vezes maiores em Pilões, 0,84 µg/L, contra 0,13 µg/L. CONCLUSÕES: Evidenciou-se associação positiva entre residir em Pilões e apresentar teores sangüíneos de POP, com risco muitas vezes maior quando comparado a localidades sem a presença desses contaminantes.

  13. Grau de exposição a praguicidas organoclorados em moradores de aterro a céu aberto

    Directory of Open Access Journals (Sweden)

    Santos Filho Eladio

    2003-01-01

    Full Text Available OBJETIVO: Estimar o grau de exposição interna aos praguicidas organoclorados (POP dos moradores de um atêrro a céu aberto. MÉTODOS: Estudo observacional, de aferição simultânea e controlado, cujo fator de estudo foi residir em área contaminada por POP e o efeito foi a concentração sanguínea dessas substâncias. A população de estudo foi de 238 pessoas residentes em um aterro a céu aberto (Pilões, no município de Cubatão, SP; e a população de controle ficou dimensionada em 258 pessoas, também residentes no mesmo município (Cota 200. Foram analisados os praguicidas HCB, p-p'DDT, p-p'DDE, p-p'DDD, o-p'DDT, a HCH; b HCH; g HCH; Aldrin; Dieldrin; Endrin; Heptaclor; Heptaclor-epoxi e Mirex. RESULTADOS: Os teores médios sangüíneos de HCB em Pilões foram de 4,66 µg/L, 155 vezes maior que a média na Cota 200 (0,03 µg/L. Em Pilões, os teores médios de DDT total foram de 3,71 µg/L, duas vezes maior do que na Cota 200 (1,85 µg/L e o HCH total apresentou concentrações sangüíneas seis vezes maiores em Pilões, 0,84 µg/L, contra 0,13 µg/L. CONCLUSÕES: Evidenciou-se associação positiva entre residir em Pilões e apresentar teores sangüíneos de POP, com risco muitas vezes maior quando comparado a localidades sem a presença desses contaminantes.

  14. Alterações bromatológicas nas frações dos carboidratos de silagens de milho "safrinha" sob diferentes tempos de exposição ao ar antes da ensilagem Bromatologic changes in the carbohydrate fractions of corn silage from corn crop planted late in the season, under different air exposure time prior to ensiling

    Directory of Open Access Journals (Sweden)

    João Pedro Velho

    2006-08-01

    Full Text Available Objetivou-se avaliar o efeito da maturidade dos grãos de milho e do tempo de exposição ao ar antes da ensilagem sobre os teores de carboidratos de silagens de milho "safrinha". O experimento foi conduzido em delineamento completamente casualizado com arranjo fatorial 2 x 4, no qual foram testados dois estádios de maturidade ao corte (grão completamente leitoso (GL ou grão ½ leitoso e ½ farináceo (GF e quatro tempos de exposição ao ar, sem compactação (0, 12, 24 ou 36 horas antes da ensilagem em minissilos. Os cortes das plantas ocorreram nos dias 26/04 e 18/05/2004. Houve efeito significativo dos estádios de maturidade (M e dos tempos de exposição ao ar (TE, além de interação entre os efeitos, para a maioria das variáveis estudadas. O teor de MS diferiu entre os estádios de maturidade e os tempos de exposição ao ar. As silagens GL e GF, respectivamente, diferiram quanto ao teor de açúcares solúveis (1,51 a 1,31% da MS e de amido (4,23 a 13,21% da MS. Quanto aos tempos de exposição ao ar, os açúcares solúveis diminuíram entre os tempos zero (1,64% da MS e 36 horas (1,05% da MS. O maior impacto dos TE foi verificado nos teores de fibra em detergente neutro corrigidos para cinzas e proteína (FDNcp. O tempo de exposição ao ar do material verde picado, de 12 horas antes da ensilagem, afetou de modo negativo o valor nutritivo de silagens de milho.The objective of this experiment was to evaluate the effect of corn grain maturity and air exposure time prior to ensiling on the carbohydrate concentration of corn silage from corn crop planted late in the season. A complete randomized design was used with a 2 x 4 factorial arrangement, testing two stages of maturity at harvest (MK - milky kernel and MDK - ½ milky and ½ dough kernel of maize crops and four air exposure time prior to ensiling: 0, 12, 24 and 36 hours. Harvests occurred in 2004 on April 26th and May 18th. Stage of maturity (M and periods of air exposure (TE

  15. GOVERNANÇA CORPORATIVA E CUSTO DE CAPITAL DE TERCEIROS: EVIDÊNCIAS ENTRE EMPRESAS BRASILEIRAS DE CAPITAL ABERTO

    Directory of Open Access Journals (Sweden)

    Camila Veneo Campos Fonseca

    Full Text Available RESUMO O reduzido acesso ao capital de terceiros, especialmente os de mais longo prazo, é um dos principais problemas do ambiente corporativo brasileiro. Conflitos de agência e existência de informação assimétrica nas transações efetivadas no mercado financeiro resultam no racionamento do crédito e no encarecimento do custo de capital. A adoção de melhores práticas de governança corporativa pelas empresas, ao implicar redução do custo de capital, amplia a captação de recursos para o investimento, mitigando o problema do financiamento empresarial. O objetivo deste estudo é avaliar a relação entre a adoção de melhores práticas de governança corporativa e o custo do capital de terceiros das empresas brasileiras não financeiras de capital aberto no período 2010-2014. De forma a atingir tal objetivo, foi utilizado um modelo de dados de painel com 230 companhias, sendo a estimação realizada pelo Método dos Momentos Generalizado Sistêmico (GMM-Sis. Os resultados apontaram que a adoção de melhores níveis de governança corporativa reduziu o custo do capital de terceiros das companhias presentes na amostra. Além disso, verificou-se que as variáveis custo de capital de terceiros do ano anterior, lucratividade e nível de emissão de ações preferenciais exerceram uma influência estatisticamente significativa sobre o custo contemporâneo da dívida.

  16. Estratégia da Estrutura de Capital sob os Efeitos das Fusões: Estudo de Caso das Instituições de Ensino Superior Brasileiras de Capital Aberto

    Directory of Open Access Journals (Sweden)

    Raul Carlos de Mello

    2010-11-01

    Full Text Available O objetivo deste artigo foi identificar os reflexos produzidos por uma estratégia de crescimento, que se utiliza das fusões, aquisições ou incorporações, sobre a estrutura de capital das instituições de ensino superior brasileiras de capital aberto. A pesquisa utilizada foi de caráter descritivo e o método empregado foi o dedutivo, tendo como meio de investigação o estudo de caso múltiplo. Desse modo, ao elaborar um mapeamento, para o período de 2004 a 2008, de todas as aquisições desenvolvidas pelas instituições de ensino superior brasileiras de capital aberto e dos indicadores relacionados às estruturas de capital, identificou-se uma influência da estratégia de aquisições sobre a estrutura de capital em duas fases: na própria definição da estratégia, ao identificar e usufruir das fontes necessárias para a implantação, e na sua implantação, ao decidir pela agregação das dívidas da empresa adquirida.

  17. A indústria de publicação contra o acesso aberto

    Directory of Open Access Journals (Sweden)

    Kenneth Rochel de Camargo Jr

    2012-12-01

    Full Text Available A publicação em revistas de acesso aberto cresceu expressivamente nos últimos anos. As publicações de acesso fechado, por sua vez, têm custo de acesso cada vez mais elevado, por se beneficiarem de um modelo econômico peculiar: o trabalho relevante e os insumos essenciais são entregues gratuitamente a fornecedores que contam com um mercado cativo, praticamente sem concorrência. O mercado editorial é altamente oligopolizado, característico de indústrias que trabalham com o regime de copyright. Isso contribui para a elevação dos preços de seus produtos. Políticas mandatórias de acesso aberto, como a determinada pela agência National Institutes of Health, constituem-se em ameaça a esse modelo de negócios e são enfrentadas pela indústria em várias frentes, incluindo a passagem de legislação para sabotar tais iniciativas. O objetivo deste comentário foi apresentar alguns aspectos principais desse enfrentamento e sugerir possíveis estratégias de incremento da publicação de acesso aberto em nosso meio.

  18. Influência do DNA mitocondrial no glaucoma primário de ângulo aberto sob a visão da cienciometria

    Directory of Open Access Journals (Sweden)

    Leonardo Mariano Reis

    2013-10-01

    Full Text Available OBJETIVO: O glaucoma primário de ângulo aberto é uma doença degenerativa do nervo óptico que se encontra entre as principais causas de cegueira no mundo. Aspectos familiares já foram implicados como fatores importantes e comprovados em inúmeros estudos. Nesse artigo, apresentamos uma revisão sistemática dos trabalhos sobre glaucoma primário de ângulo aberto e DNA mitocondrial e fazemos uma análise estatística à luz dos conceitos da cienciometria. MÉTODOS: A pesquisa bibliográfica de trabalhos envolvendo DNA mitocondrial e glaucoma primário de ângulo aberto foi realizada por meio da base de dados do sítio Scopus. Foi feito o levantamento a partir das palavras-chaves "Mitochondrial DNA" e "Glaucoma" em todos os campos para publicações no período compreendido de 1992 até agosto de 2012. Finalmente, foi realizada a estatística e cienciometria com os principais dados: autores que publicaram sobre o assunto DNA mitocondrial e glaucoma; revistas e outras publicações que tiveram trabalhos relacionados com o tema; Centros de Pesquisa e Universidades que mais publicaram e países onde foram realizados os estudos sobre DNA mitocondrial e glaucoma. RESULTADOS: Identificamos que esses estudos têm aumentado sobremaneira ao longo dos últimos anos, mas ainda se encontram confinados, na maior parte, a alguns centros de pesquisa e concentrados em seletos grupos de autores na área da oftalmologia em países desenvolvidos. No Brasil, ainda não temos pesquisas publicadas sobre o assunto até o momento. CONCLUSÃO: Esses estudos são de fundamental importância para a elucidação das causas genéticas do glaucoma e para o desenvolvimento de novas terapias que não visem tão somente a diminuição da pressão intraocular.

  19. Ars Electronica

    DEFF Research Database (Denmark)

    Kristensen, Thomas Bjørnsten

    2009-01-01

    Anmeldelse af Ars Electronica festivalen 3. - 8. september, 2009 i Linz, Østrig, der fejrede 30 års jubilæum under temaet "Human Nature". Festivalen fokuserer på interaktion mellem menneske, teknologi, kunst og samfund med særlig vægt på udviklingen af computeren og det digitale. Udgivelsesdato: 15.12...

  20. Frações nitrogenadas de silagens de milho "safrinha" sob diferentes tempos de exposição ao ar antes da ensilagem Nitrogenous fractions of silages from a maize crop planted late in season, under different periods of air exposure previous to ensiling

    Directory of Open Access Journals (Sweden)

    João Pedro Velho

    2008-02-01

    Full Text Available Objetivou-se avaliar o efeito da maturidade dos grãos de milho e do tempo de exposição ao ar antes da ensilagem sobre o pH e os componentes nitrogenados de silagens de milho "safrinha". O experimento foi conduzido em delineamento completamente casualizado com arranjo fatorial 2 x 4, no qual foram testados dois estádios de maturidade (MA ao corte (grão completamente leitoso (GL ou grão ½ leitoso ½ farináceo (GF e quatro tempos de exposição ao ar (EX, sem compactação (0, 12, 24 e 36 horas antes da ensilagem em minissilos. Houve efeito significativo (PThis experiment was aimed at evaluating the effect of corn grain maturity and air exposure time prior to ensiling on the pH and nitrogenous fractions of corn silage from corn crop planted late in the season. A completely randomized 2 x 4 factorial arrangement was used to test the effect of two maturity stages at harvest (GL, milky kernel and GF, ½ milky ½ dough kernel of maize crops and the effects of four periods of air exposure of chopped materials (zero, 12, 24 and 36 hours previous to packing in mini-silos, on pH and N fractions of silages. There was a significant effect (P<0.05 related to stage of maturity and period of air exposure concerning the contents of crude protein and neutral detergent insoluble nitrogen, as well as an interaction between the main effects for ammonia nitrogen and acid detergent insoluble nitrogen. Due to the interaction, the maize silage harvested at the milky kernel stage resulted in higher pH value and ammonia nitrogen contents. A delayed packing procedure increases the insoluble nitrogen fractions and may affect negatively protein digestibility.

  1. Schirmer test performed with open and closed eyes: variations in normal individuals Comparação entre os testes de Schirmer em olhos abertos e fechados em indivíduos normais

    Directory of Open Access Journals (Sweden)

    Leão Gabbay Serruya

    2009-02-01

    Full Text Available PURPOSE: To analyze the difference between measurements of Schirmer test I (ST I and basal Schirmer test (STB with open and closed eyes. METHODS: Sixty eyes of 30 normal volunteers, 12 males and 18 females aged 28 ± 9 years were recruited for the study. All ST were carried out in a closed environment with the absence of airflow (humidity 60 ± 2.34% and temperature 20.72 ± 1.52ºC. ST I and ST B were performed with the individuals' both eyes open and closed with an interval of 6 hours. All ST were conducted in 5 minutes. For statistical analysis, the ST strip's wetting velocity (ST V (in millimeters per minute was calculated, dividing the ST values by its wetting time. If ST values were 35mm before 5 minutes, wetting time was recorded to obtain ST V. RESULTS: ST V measurements of ST I performed with closed eyes (10.30 ± 11.55 were statistically different from those performed with open eyes (18.85 ± 17.88 and ST V measurements of STB performed with closed eyes (3.74 ± 3.14 were statistically different from those performed with open eyes (6.19 ± 5.86. CONCLUSION: ST performed with open or closed eyes can have an important influence in the results of ST I and STB in normal individuals.OBJETIVO: Analisar a diferença das medidas dos testes de Schirmer I e Schirmer basal realizados com os olhos abertos e olhos fechados. MÉTODOS: Foram analisados 60 olhos de 30 indivíduos normais com idade média de 28 ± 9 anos. A umidade média do ar foi de 60 ± 2,34% e a temperatura média de 20,72 ± 1,52ºC. No primeiro dia, foi feito o teste de Schirmer I com os olhos abertos. Após um intervalo de 6 horas, foi realizado o teste de Schirmer I com os olhos fechados. No segundo dia, foi realizado o mesmo procedimento com o teste de Schirmer basal. Para fins de comparação, as medidas das tiras de papel foram divididas pelo tempo de umedecimento das tiras (velocidade para análise estatística. RESULTADOS:No teste de Schirmer I realizado com os olhos

  2. Avaliação do desempenho de bomba multifásica na geração de microbolhas de ar para o processo de flotação por ar dissolvido aplicado ao pré-tratamento de efluente de indústria têxtil

    OpenAIRE

    André Pioltine

    2009-01-01

    A flotação por ar dissolvido (FAD) é um método de separação de fases bastante utilizado em sistemas de tratamento de efluentes industriais. Nos últimos 20 anos, numerosos avanços têm contribuído para uma maior eficiência deste processo. Entre estes, podem-se citar os avanços nos métodos para a saturação de ar na água. Atualmente tem-se realizado estudos com a utilização de bombas multifásicas em substituição às unidades de saturação tradicionais, com vistas a se buscar maior simplicidade e fa...

  3. Parâmetros hematológicos e bioquímicos da tilápia-do-Nilo (Oreochromis niloticus L. sob estresse por exposição ao ar Hematological parameters of Nile Tilapia (Oreochromis niloticus L. under air exposure stress

    Directory of Open Access Journals (Sweden)

    Roberta Dias da Silva

    2012-12-01

    Full Text Available No presente trabalho avaliaram-se os parâmetros hematológicos e bioquímicos de exemplares adultos de tilápias (Oreochromis niloticus sob a influência do fator estresse fisiológico em animais submetidos à exposição ao ar durante a engorda em sistema raceway. Foram analisados o eritrograma, teor de hemoglobina, volume globular, o volume corpuscular médio (VCM, a hemoglobina corpuscular média (HCM, a concentração de hemoglobina corpuscular média (CHCM, o leucograma, contagem diferencial de leucócitos, o plaquetograma, a glicose, a proteína total, o colesterol, o triglicerídeo e os eletrólitos (cálcio, cloretos, sódio e potássio. Os resultados revelaram que houve uma homogeneidade de distribuição para hemácias, volume globular, hemoglobina, índices hemantimétricos, proteína total, glicose, colesterol, e íons séricos, indicados pelos valores relativamente baixos do coeficiente de variação. Houve correlação positiva somente para leucócitos totais, células de defesa orgânica (neutrófilos e linfócitos, glicose, colesterol, sódio e cálcio. Quanto ao leucograma, à medida que os animais foram expostos ao ar, o número de leucócitos diminuiu gradativamente (leucopenia, ocorrendo simultaneamente neutrofilia e linfopenia. O índice glicêmico constituiu um bom indicador de estresse fisiológico, devido à hiperglicemia (82,0±20,88mg/dL demonstrada nos tratamentos. A exposição ao ar constituiu um fator de desequilíbrio na homeostase iônica, e na síntese de colesterol endógeno. Entretanto, o tempo de recuperação não ocasionou a completa reabilitação fisiológica frente ao desafio imposto.The present study evaluated the hematological and biochemical parameters of adult tilapia (Oreochromis niloticus under the influence of the physiological stress factor in animals submitted to air exposure during fattening in raceway system. Blood cell count, hemoglobin, hematocrit, mean corpuscular volume (MCV, mean

  4. Mercado aberto e política monetária

    OpenAIRE

    Shashoua, Esther Baker

    1992-01-01

    Esta tese tem como objetivo realizar uma síntese sobre o Mercado Aberto no Brasil, desde a sua implementação em janeiro de 1970, assim como mostrar a sua participação na política monetária. Buscou-se,também, através de instrumentos estatísticos, mostrar evidências sobre o procedimento operacional utilizado pelas Autoridades Monetárias na realização da política monetária e as possíveis mudanças na sua condução, nestes últimos 20 anos.

  5. Tecnologias de dados abertos para interligar bibliotecas, arquivos e museus: um caso machadiano

    Directory of Open Access Journals (Sweden)

    Antonio Laurindo dos Santos Neto

    Full Text Available O artigo propõe um caso fictício para ilustrar o uso das tecnologias de Dados Abertos Interligados como mecanismos para tornar interoperáveis informações em acervos de bibliotecas, arquivos e museus, utilizando como exemplo as informações sobre o escritor Machado de Assis e sua obra. Utilizou-se como método o estudo de um caso restrito e ilustrativo, não exaustivo. Aplicaram-se diferentes vocabulários para interligação dos dados e para sua representação, utilizando os princípios do Linked Data; sugere-se que os profissionais da informação usufruam dessa potencialidade e busquem novas aplicações para ampliar a interoperabilidade dos dados disponíveis na Web.

  6. O espaço político aberto pela leitura literária

    Directory of Open Access Journals (Sweden)

    Leonardo Pinto de Almeida

    2013-01-01

    Full Text Available O presente artigo se propõe questionar sobre o espaço político aberto pela leitura literária. Especificando a literatura como uma tentativa de compreensão de problemas relacionados à existência, sublinhamos como a leitura literária coloca em questão nossas convicções e verdades defendidas cotidianamente. Para tanto, compreendemos as relações tecidas entre a linguagem, o poder e a resistência no seio da experiência literária. Concluímos que a leitura literária é atravessada por formas de resistência às palavras de ordem que circulam de forma hegemônica em nossa sociedade, disponibilizando assim uma transformação em nossa rede afetiva e cognitiva.

  7. Arsenic exposure assessment of children living in a lead mining area in Southeastern Brazil Avaliação da exposição de crianças ao arsênio em área de mineração de chumbo na Região Sudeste do Brasil

    Directory of Open Access Journals (Sweden)

    Alice Momoyo Sakuma

    2010-02-01

    Full Text Available Environmental contamination by arsenic compounds in the Ribeira River Valley, São Paulo, Brazil has already been observed. Lead mining and refining activities had been carried on since late colonial times and finished recently, at the end of 1995. The source of As in the region is known to be mainly from arsenopirite geological presence in the lead ore. Chronic exposure to arsenic compounds may cause peripheral vascular disorders, hyperpigmentation, hiperkeratosis and cancer of the skin, bladder, lung, liver and other internal organs. The purpose of this study was to assess children exposure to arsenic from environmental sources in the region. Urine samples from children between 7 to 14 years old were collected at the following localities: Cerro Azul (Paraná; urban areas of Ribeira (São Paulo and Adrianópolis (Paraná; Vila Mota neighborhood (rural area of Adrianópolis and Serra neighborhood (Iporanga, São Paulo, identified as groups 1, 2, 3 and 4, respectively. Group 1 was considered as non-exposed control group. Toxicologically relevant forms of As were determined by atomic absorption spectrometry with hydride generation system. The median values of urine arsenic levels obtained in groups 1, 2, 3 and 4 were respectively: 3.60, 6.30, 6.41 e 8.94μg/L.Contaminação ambiental por compostos de arsênio no Vale do Ribeira, São Paulo, Brasil, tem sido já observada. As atividades de mineração e refinamento do chumbo têm ocorrido desde a época colonial e foram encerradas recentemente, no final de 1995. A principal fonte de arsênio na região é arsenopirita que ocorre geologicamente no minério de chumbo. Exposição crônica aos compostos de arsênio podem causar desordens vasculares periféricas, hiperpigmentação, hiperqueratose, além de câncer de pele, bexiga, pulmão, fígado e outros órgãos. O objetivo do presente estudo foi avaliar a exposição de crianças ao arsênio proveniente de fontes ambientais na região. Amostras de

  8. Papéis, conflitos e gratificações do enfermeiro de serviços abertos de assistência psiquiátrica

    Directory of Open Access Journals (Sweden)

    Raphael Valentino Marques de Lima

    2010-06-01

    Full Text Available Frente ao processo de transformação da assistência psiquiátrica, o papel de agente terapêutico é preconizado como um dos principais papéis do enfermeiro desta área específica, e, este estudo, objetivou identificar os papéis, conflitos e gratificações do enfermeiro de serviços abertos de assistência psiquiátrica. Trata-se de um estudo descritivo exploratório, onde foi utilizado um questionário, aplicado a onze enfermeiros dos serviços em questão, na cidade de Ribeirão Preto – São Paulo - Brasil. Os resultados mostraram que a maioria está na faixa etária entre 31 e 40 anos e possuem curso de especialização. Três cursaram mestrado e um cursou doutorado. Como papéis, destacaram os específicos do enfermeiro e os administrativos. Como conflitos, apontaram as condições de trabalho, a baixa remuneração, o não reconhecimento da sua liderança e a falta de recursos. O reconhecimento profissional e a reabilitação do portador de transtorno mental constituíram-se nas gratificações relatadas, permitindo concluir que esses enfermeiros identificam com propriedade o seu papel, apontam dificuldade para desempenhar parte deles, principalmente, frente às situações que enfrentam, identificam os seus conflitos e mostraram-se gratificados pelo reconhecimento da contribuição do seu trabalho na reabilitação do portador de transtorno mental, preservando, assim, certo idealismo relativo ao exercício de sua profissão.

  9. Ar-Ar_Redux: rigorous error propagation of 40Ar/39Ar data, including covariances

    Science.gov (United States)

    Vermeesch, P.

    2015-12-01

    Rigorous data reduction and error propagation algorithms are needed to realise Earthtime's objective to improve the interlaboratory accuracy of 40Ar/39Ar dating to better than 1% and thereby facilitate the comparison and combination of the K-Ar and U-Pb chronometers. Ar-Ar_Redux is a new data reduction protocol and software program for 40Ar/39Ar geochronology which takes into account two previously underappreciated aspects of the method: 1. 40Ar/39Ar measurements are compositional dataIn its simplest form, the 40Ar/39Ar age equation can be written as: t = log(1+J [40Ar/39Ar-298.5636Ar/39Ar])/λ = log(1 + JR)/λ Where λ is the 40K decay constant and J is the irradiation parameter. The age t does not depend on the absolute abundances of the three argon isotopes but only on their relative ratios. Thus, the 36Ar, 39Ar and 40Ar abundances can be normalised to unity and plotted on a ternary diagram or 'simplex'. Argon isotopic data are therefore subject to the peculiar mathematics of 'compositional data', sensu Aitchison (1986, The Statistical Analysis of Compositional Data, Chapman & Hall). 2. Correlated errors are pervasive throughout the 40Ar/39Ar methodCurrent data reduction protocols for 40Ar/39Ar geochronology propagate the age uncertainty as follows: σ2(t) = [J2 σ2(R) + R2 σ2(J)] / [λ2 (1 + R J)], which implies zero covariance between R and J. In reality, however, significant error correlations are found in every step of the 40Ar/39Ar data acquisition and processing, in both single and multi collector instruments, during blank, interference and decay corrections, age calculation etc. Ar-Ar_Redux revisits every aspect of the 40Ar/39Ar method by casting the raw mass spectrometer data into a contingency table of logratios, which automatically keeps track of all covariances in a compositional context. Application of the method to real data reveals strong correlations (r2 of up to 0.9) between age measurements within a single irradiation batch. Propertly taking

  10. Open Access Serials: the High Dilution Research case. Publicaciones de acceso abierto: el caso de la investigación en altas diluciones Publicações de acesso aberto: o caso da pesquisa em altas diluições

    Directory of Open Access Journals (Sweden)

    Carlos Renato Zacharias

    2008-09-01

    ático, revisado por pares e de fácil acesso, capaz de alcançar parâmetros de alto impacto sem perder seu foco, onde os marcos de referência e conceitos teóricos possam ser apresentados e intensamente discutidos, abarcando do experimental ao teórico, pesquisa básica e aplicada, pesquisas clínicas, históricas e sociológicas. As características do sistema aberto se correspondem adequadamente com os requerimentos de um periódico para a comunidade ligada às altas diluições. Igualmente, o meio eletrônico permite divulgar textos e gráficos de maior tamanho, filmes, entrevistas, áudio e outros tipos de formatos multimedia. Por esse motivo, um periódico científico de acesso aberto dedicado às altas diluições seria muito bem recebido pela comunidade internacional. Palavras-chave: Acesso aberto, altas diluições, periódicos online.   Publicaciones de acceso abierto: el caso de la investigación en altas diluciones Resumen La publicación de acceso abierto parece ser el nuevo paradigma en publicación científica, representando una tendencia creciente en todos los segmentos de la sociedad. En particular, nos interesa la aplicación de este modelo en la investigación de altas diluciones. Tal área multidisciplinar está abierta a especialistas de todas las áreas del saber, necesitando aún ensayos y modelos experimentales, así como abordajes teóricos. Sin embargo, estos investigadores deben ser reunidos en torno de un periódico temático, revisado por pares y de fácil acceso, capaz de alcanzar parámetros de alto impacto sin perder su foco, adonde los marcos de referencia y conceptos teóricos puedan ser presentados e intensamente discutidos, abarcando desde lo experimental a lo te

  11. Análise fluido-dinâmica do escoamento em ensaio de permeabilidade ao ar de argamassas preparadas com cimento Portland de alto-forno Fluid-dynamic analysis of the flow in air permeability measurement of mortars prepared with blast-slag furnace Portland cement

    Directory of Open Access Journals (Sweden)

    V. M. Pereira

    2008-06-01

    Full Text Available O estudo dos fenômenos fluido-dinâmicos de escoamento em meios porosos tem sido de grande interesse por diversas áreas das ciências, de forma a se avaliar não só a permeabilidade do material, mas também analisar o comportamento do fluido permeante quando no interior destes materiais. Tratando-se de compósitos à base de cimento, a mensuração da permeabilidade torna-se fundamental para que sua durabilidade possa ser estimada, pois é a permeabilidade que controla a taxa de ingresso e movimentação de agentes deletérios no interior destes materiais. Dessa forma, diversas metodologias e equacionamentos matemáticos têm sido utilizados para prever a permeabilidade de materiais à base de cimento. No entanto, várias discrepâncias e disparidades nos resultados têm sido encontradas. Dentre as metodologias empregadas para mensurar a permeabilidade de meios porosos, encontra-se a desenvolvida por Thenoz, a qual tem demonstrado bons resultados em materiais à base de cimento. Dessa forma, este trabalho visa, por meio de ensaio de permeabilidade ao ar, realizado de acordo com a metodologia de Thenoz, avaliar o comportamento fluido-dinâmico do ar durante o ensaio de permeabilidade em argamassas. Para isto, foram utilizadas argamassas preparadas com dois tipos de cimento Portland (CP II E - 32 e CP III - 32, duas relações água/cimento (0,5 e 0,6 e ensaiadas em idades de 14 e 28 dias. Por meio dos resultados obtidos foi possível observar que durante o escoamento a compressibilidade do ar pode ser ignorada e o regime de escoamento pode ser considerado como laminar, demonstrando que a metodologia proposta por Thenoz e o equacionamento matemático empregado pode resultar em coeficientes de permeabilidade ao ar confiáveis, pois fenômenos e considerações que poderiam influenciar neste tipo de escoamento podem ser negligenciados.Fluid-dynamic phenomena study in porous media flow has been of great interest for diverse areas of sciences

  12. Sustentabilidade empresarial e o impacto no custo de capital próprio das empresas de capital aberto Sustainable development and consequences for equity costs in public companies

    Directory of Open Access Journals (Sweden)

    Lílian Simone Aguiar da Silva

    2006-12-01

    Full Text Available Este trabalho apresenta o impacto no custo de capital próprio para as empresas brasileiras de capital aberto face à adoção dos princípios de sustentabilidade. O conceito de desenvolvimento sustentável tem se aprimorado num processo contínuo de reavaliação da relação existente entre: crescimento econômico, a sociedade civil e o meio ambiente. O triple-bottom-line das dimensões econômica, ambiental e social da sustentabilidade tem emergido como um modelo de interpretação pelas empresas, embora cada uma dessas dimensões represente um grande desafio. O segmento corporativo vem atendendo às demandas cada vez maiores da sociedade frente a essas questões, ficando a dúvida quanto à legitimidade dessas ações e o questionamento relativo ao papel das empresas na economia e na sociedade. Para avaliar o impacto no custo de capital próprio, foi implementado um modelo de decomposição do beta em medidas contábeis de risco, incluindo uma variável referente à sustentabilidade. O resultado confirma a expectativa de que ao aderir aos padrões de sustentabilidade a empresa reduz o risco corporativo medido pelo risco sistemático, determinando a redução do custo de capital e aumento do valor econômico.This article provides an analysis of equity costs in Brazilian public companies regarding the adoption of sustainability principles. The concept of sustainable development has evolved considering the relation among economic growth, the society and the environment. The triple-bottom-line of economic, environmental, and social dimensions has emerged as an interpretation model by companies, although each of these dimensions may present a challenge. The corporate sector has faced an increasing demand from society regarding these sustainability concepts, though the actions and the role to be played by companies within this context are still being questioned. Equity costs were analyzed by a multivariate regression of beta on accounting measures

  13. ArArCALC—software for 40Ar/ 39Ar age calculations

    Science.gov (United States)

    Koppers, Anthony A. P.

    2002-06-01

    ArArCALC is a Microsoft Excel ® 97-2000-XP application for performing calculations in 40Ar/ 39Ar geochronology. It is coded in Visual Basic for Applications and can be used under the Windows ® 95/98/NT/2000/ME/XP operating systems. ArArCALC provides an easy-to-use graphical interface for the calculation of age plateaus, total fusion ages and isochrons following the regression of 40Ar/ 39Ar mass spectrometry data. Results are stored in single Excel workbooks including nine different data tables and four different diagrams. Analytical, internal and external errors are calculated based on error propagation of all input parameters, analytical data and applied corrections. Finally, the age calculation results can be recalibrated with reference to the primary K-Ar standards (e.g. GA-1550, MMhb-1) in order to obtain more consistent absolute40Ar/ 39Ar age determinations. ArArCALC is distributed as freeware.

  14. Aspiração endotraqueal por sistema aberto: práticas de profissionais de enfermagem em terapia intensiva

    OpenAIRE

    Frota, Oleci Pereira; Loureiro, Marisa Dias Rolan; Ferreira,Adriano Menis

    2014-01-01

    O objetivo deste estudo foi investigar as práticas dos profissionais de enfermagem de terapia intensiva quanto à aspiração endotraqueal (AET) por sistema aberto. Métodos: Trata-se de uma pesquisa com enfoque quantitativo desenvolvida em um hospital universitário de Mato Grosso do Sul, Brasil, com 25 sujeitos. Os dados, coletados de abril a setembro de 2011 por meio de instrumento de observação do tipo checklist contendo 23 itens da técnica, foram analisados por estatística descritiva. ...

  15. A visibilidade e a qualidade em revistas de Ciências da Comunicação em acesso aberto no contexto ibero-americano, Portugal e Espanha

    OpenAIRE

    Freitas, M. Cristina V. de; Borges, Maria Manuel; Simões, Maria da Graça; Cardoso, Manuela

    2014-01-01

    As revistas são imprescindíveis na divulgação e no acesso à ciência. O acesso aberto potencia esta divulgação e colateral impacto, onde a visibilidade é uma alavanca e a sua qualidade, ou a ausência desta, é uma oportunidade ou um entrave. Este artigo investiga revistas de Ciências da Comunicação em acesso aberto no espaço ibero-americano, Portugal e Espanha, sob o binómio visibilidade/qualidade. Trata-se de um estudo de caso descritivo e interpretativo. Primeiramente recolhe-se uma amostra n...

  16. REGULARIDADE NO PAGAMENTO DE DIVIDENDOS E GOVERNANÇA CORPORATIVA: ESTUDO EM COMPANHIAS DE CAPITAL ABERTO LISTADAS NA BM&FBOVESPA

    Directory of Open Access Journals (Sweden)

    Ramon Kael Benassi Bachmann

    2012-08-01

    Full Text Available O objetivo deste estudo é verificar qual a relação entre nível de governança corporativa e regularidade do pagamento de dividendos das companhias de capital aberto listadas na BM&FBOVESPA, entre 2001 e 2010. Empresas listadas na bolsa compuseram três amostras, segregadas conforme (i pagamento de dividendos a acionistas ordinários, (ii preferenciais ou (iii dividendos totais pagos pela companhia. Para representar regularidade admitiu-se como métrica os coeficientes de variação (CV das séries de pagamento de dividendos das companhias, no período analisado. Para os níveis de governança corporativa foram atribuídas duas métricas: uma simples (NG, atribuindo 1 ponto por ano de enquadramento em algum dos níveis, o que considera-os em termos de tempo de enquadramento; e outra ponderada (NGP, atribuindo 1 ponto por ano de enquadramento no Nível 1 (N1, 2 pontos por ano no Nível 2 (N2 e 3 pontos por ano no Novo Mercado (NM, considerando tempo de enquadramento no nível de governança e tipo de nível. Na análise dos dados utilizou-se correlações de Pearson para verificar qual o tipo de relação entre CV e NG e entre CV e NGP, ambos para as 3 amostras. Os resultados indicam que o tempo de enquadramento em qualquer nível de governança, exceto o tradicional, tem relação inversa com regularidade de pagamento de dividendos, reafirmando possíveis gerenciamentos de resultados (income smoothing em companhias não enquadradas ou com pouco tempo de enquadramento. Constatou-se também que o tipo de nível de governança corporativa guarda relação apenas com a regularidade de pagamento de dividendos aos acionistas preferenciais.

  17. O papel da visão na aversão aos espaços abertos no labirinto em cruz elevado

    Directory of Open Access Journals (Sweden)

    Silvio Morato

    2006-01-01

    Full Text Available O labirinto em cruz elevado é um dos modelos mais usados no estudo da ansiedade, medo e fármacos que alteram esses estados. Apesar da simplicidade aparente do modelo, diversos são os fatores que afetam o comportamento de ratos submetidos a esse modelo. Além disso, não se conhece exatamente quais os estímulos ambientais são os desencadeadores da aversão nesse modelo. O presente trabalho sugere que, em estudos onde os estímulos auditivos e olfativos são controlados, a aversão em ratos é desencadeada pela visão. A hipótese de trabalho é que os mecanismos mediadores da aversão (e estados emocionais concomitantes são deflagrados pela entrada de luz e pela formação de imagens na retina dos animais. Para fundamentar essas hipóteses complementares, vários experimentos são analisados, cujos resultados favorecem uma, outra ou ambas as hipóteses. Finalmente, resultados obtidos com marcação da proteína c-Fos fornecem evidência neurofuncional que apóia as duas hipóteses sugeridas.

  18. Ars Himera / Irina Lobanova

    Index Scriptorium Estoniae

    Lobanova, Irina

    2003-01-01

    Iseloomustatakse praegust aega ja moodsat kunsti: valitseb vastutustundetus ja ebainimlikkus. Näited - professor von Hageni "Korpwelten" ja uusim kunstinähtus Ars Chimaera - eksponeerimise eesmärgil surrogaatsete elusolendite saamise kunst

  19. Produção e tolerância ao pendoamento de alface-romana em diferentes ambientes

    Directory of Open Access Journals (Sweden)

    Cárita Rodrigues de Aquino

    2014-08-01

    Full Text Available O experimento foi conduzido na área experimental da Universidade do Estado de Mato Grosso, localizada no município de Cáceres-MT, no período de maio a agosto de 2011, com o objetivo de avaliar a influência de diferentes ambientes e espaçamentos na produção e tolerância ao pendoamento de alface-romana cultivar Sophia. O delineamento experimental foi em blocos casualizados, arranjados em esquema fatorial 2 x 5, composto por dois espaçamentos (30 x 30 cm e 25 x 25 cm e cinco ambientes de cultivo (tela de sombreamento 30 e 50% , tela termorrefletora de 30 e 50% e ambiente aberto, perfazendo 10 tratamentos com quatro repetições cada. As parcelas experimentais foram constituídas por quatro linhas, com cinco plantas cada, totalizando 20 plantas por parcela. Consideraram-se como área útil para avaliação da produção as seis plantas centrais. As parcelas em que foi utilizado o espaçamento 30 x 30 cm apresentavam 1,8 m² cada, e as com o espaçamento 25 x 25 cm, 1,5 m² cada. As mudas foram transplantadas com 26 dias e a colheita realizada aos 46 dias após o transplantio. Observou-se que o espaçamento de 25 x 25 cm entre plantas e o ambiente aberto proporcionaram maior produtividade da alface-romana. Porém, o tempo para pendoamento das plantas no ambiente aberto foi menor que nos ambientes com as telas de sombreamento ou termorrefletora.

  20. Exigências nutricionais da grápia ao fósforo e enxofre em Argissolo Vermelho distrófico arênico: efeito da adubação no crescimento Nutritional demand of grápia to phophorus and sulfur in paleaudalf soil: fertilization effects on growth

    Directory of Open Access Journals (Sweden)

    Evandro Luiz Missio

    2004-08-01

    Full Text Available A grápia (Apuleia leiocarpa Vog. Macbride é uma espécie de grande interesse madeireiro, encontrando-se, atualmente, bastante dizimada devido à exploração extrativista, sem haver reposição através de reflorestamento. O objetivo deste trabalho foi determinar os níveis ótimos de adubação de fósforo e enxofre no crescimento de plantas jovens de grápia. As plantas foram cultivadas em vasos contendo 3,5kg de solo Argissolo Vermelho distrófico arênico, sob condições de casa de vegetação não climatizada. O delineamento experimental foi o inteiramente casualizado com seis repetições. Foram avaliados 16 tratamentos em esquema bifatorial completo (4x4, representados pela combinação de quatro doses de P (0, 60, 120 e 180mg kg-1 e quatro de enxofre (0, 10, 20 e 30mg kg-1. A análise do crescimento das plantas foi realizada mensalmente através da altura da planta, diâmetro do caule e número de folhas remanescentes. Aos 130 dias após a emergência das plantas, avaliaram-se ainda o número de folhas caídas, matéria seca das folhas, caule, raízes e total da planta e a relação entre a matéria seca das raízes e da parte aérea. A produção de matéria seca total das plantas jovens de grápia respondeu positivamente à adubação conjunta de P e S, com dose de máxima eficiência técnica estimada de, respectivamente, 204 e 16mg kg-1 de solo. A adubação fosfatada na dose igual ou acima de 120mg kg-1 de solo induziu o aparecimento de clorose foliar típica da deficiência de Fe. A alta disponibilidade de P no solo favoreceu o crescimento da parte aérea em detrimento das raízes.Grápia (Apuleia leiocarpa Vog. Macbride is an important native forest species that has been in extinction process. The aim of this study was to determine the optimum levels of phosphorus and sulfur fertilization on the initial growth of grápia. Grápia plants were cultivated in pots containing 3.5kg of a Paleudalf soil, under unclimatized glasshouse

  1. AO operations at Gemini South

    Science.gov (United States)

    Marin, Eduardo; Cardwell, Andrew; Pessev, Peter

    2014-08-01

    The 8m Gemini South telescope is entering an exciting new era of AO operations, which put it at the forefront of astronomical AO in terms of both wide field AO, and extreme-AO systems. Major milestones achieved were the successful commissioning of GeMS, in 2012, and GPI, in late 2013 and early 2014. Currently we are operating two of the worlds most advanced astronomical AO systems. Gemini, running primarily in queue, must balance the promise of AO with the demands of the community to use non-AO instruments. We discuss the current state of the two AO systems, and their operational models. The preparations that go into planning each AO run, the difficulties in scheduling around non-AO instruments, and the differences between scheduling LGS AO and non-LGS AO are discussed.

  2. O espaço aberto da educação infantil: lugar para brincar e desenvolver-se

    Directory of Open Access Journals (Sweden)

    Luana dos Santos Raymundo

    2010-08-01

    Full Text Available Este estudo teve como objetivo principal identificar as características existentes nas configurações dos espaços abertos de instituições de educação infantil, relacionando os aspectos físicos com as brincadeiras desenvolvidas pelos seus usuários, recorrendo à aplicação da técnica do mapeamento comportamental. O estudo foi conduzido em dois contextos educativos do município de Florianópolis-SC, nos quais os participantes, crianças entre 3 e 5 anos, foram observados no período de recreação. A análise dos dados evidenciou a preferência de determinados equipamentos por seus usuários. Em ambos os contextos, as meninas preferiram os equipamentos de balanço e caixa de areia, enquanto os meninos preferiram os equipamentos múltiplos (bombeiros e casa do Tarzan. Os equipamentos que obtiveram significativa ocupação foram aqueles que possibilitaram uma maior diversidade de brincadeiras (faz de conta. Concluímos que as características físicas dos espaços deram previsibilidade para algumas brincadeiras e continuidade a certos mecanismos biológicos, sociais e culturais experienciados pelos seus usuários

  3. Cranioplastia primária nos afundamentos do crânio com ferimento aberto do couro cabeludo

    Directory of Open Access Journals (Sweden)

    Darcy de Freitas Vellutini

    1972-06-01

    Full Text Available Os autores referem 13 casos de afundamentos crânio-encefálicos pós-traumáticos com ferimento aberto do couro cabeludo nos quais foi usado o metilmetacrilato em uma única intervenção cirúrgica. A sede do afundamento era frontal em 9 casos, parietal em dois, parieto-temporal em um e parieto-occipital em um. Os afundamentos interessavam apenas a tábua óssea em 5 casos, estavam associados a lesão de dura-mater em três e também do tecido cerebral em 5. Foi realizada cranioplastia simples em 5 casos e, em 8, ela foi precedida de plástica de dura-mater. O seguimento pós-operatório variou de dois meses a dois anos; até o momento não foi assinalada ocorrência de infecção ou de fenômeno de rejeição da prótese que obrigasse a sua retirada.

  4. Impacto do sistema de aspiração traqueal aberto e fechado na incidência de pneumonia associada à ventilação mecânica: revisão de literatura Impact of the open and closed tracheal suctioning system on the incidence of mechanical ventilation associated pneumonia: literature review

    Directory of Open Access Journals (Sweden)

    Fernanda Maia Lopes

    2009-03-01

    Full Text Available A pneumonia é a infecção nosocomial mais comum em unidades de terapia intensiva, sendo a ventilação mecânica um fator fortemente associado ao seu desenvolvimento. O objetivo deste estudo foi descrever o impacto do sistema de aspiração traqueal aberto e fechado na incidência de pneumonia associada à ventilação mecânica. Realizou-se uma pesquisa na base de dados Pubmed para identificar tentativas controladas aleatórias, publicadas no período de 1990 a novembro de 2008. Nove estudos foram incluídos. Dos estudos revisados, sete não observaram redução significante da incidência de pneumonia associada à ventilação mecânica com o uso do sistema fechado comparado ao aberto, sendo que dois destes verificaram que o uso do sistema fechado resulta em incremento nas taxas de colonização sem incrementar sua incidência e um observou que o uso do sistema fechado não incrementa a colonização do trato respiratório e reduz a expansão de infecção resultando em redução nas taxas de sepse. Apenas dois estudos verificaram redução na incidência de pneumonia associada à ventilação mecânica com o uso do sistema fechado, e um destes revelou um risco 3.5 vezes maior de desenvolvimento desta infecção com o sistema aberto. Os resultados sugerem que o impacto do sistema de aspiração traqueal aberto e fechado é semelhante para o desenvolvimento da pneumonia associada à ventilação mecânica, assim a escolha do tipo de sistema de aspiração traqueal deve ser baseada em outros parâmetros. Entretanto, o sistema fechado aumenta o risco de colonização do trato respiratório, mas apresenta como vantagens a manutenção da ventilação mecânica e o menor prejuízo hemodinâmico.Pneumonia is the most common nosocominal infection in intensive care units and mechanical ventilation is a significant factor associated to its development. The objective of this study was to describe the impact of the open and closed tracheal suction

  5. Ramon Llull's Ars Magna

    DEFF Research Database (Denmark)

    Jensen, Thessa

    of the Christian faith. He soon discovered that the main challenge was to explain the divine Trinity to non Christians. Furthermore, he realised that culture and language barriers must be taken into account when he tried to explain the Christian faith. In-stead of focussing on the differences, Llull sought out...... might be a viable and valuable approach to understand some of the challenges and possibilities found in computer science and ethics. Vita Llull was born in 1232 in Palma de Mallorca, a melting pot for different cul-tures and religions at the time. Being educated at the king’s court, Llull learned......Ramon Llull’s Ars Magna Thessa Jensen Institute for Communication and Psychology, Aalborg University Aalborg, Denmark thessa@hum.aau.dk The Great Art of Ramon Llull — the Ars Magna — must be seen as one of the basic philosophical approaches to formalisation of thought, language, and knowledge...

  6. Combined K-Ar and 40Ar/39Ar dating of the upper Jaramillo reversal

    Science.gov (United States)

    Guillou, Herve; Carracedo, Juan Carlos; Kissel, Catherine; Laj, Carlo; Nomade, Sebastien; Perez Torrado, Francisco Jose; Rodriguez Gonzalez, Alejandro; Wandres, Camille

    2013-04-01

    The Jaramillo subchron was first evidenced in 1966 (Doell and Dalrymple) through the Rhyolotic domes of the Valles Caldera, New Mexico (USA). 40Ar/39Ar studies achieved by Spell et McDougall (1992), Spell et Harrison (1993), Izett and Obradovich (1994) and Singer et al. (1994) defined the base of this subchron at 1053±6 ka, and the ceiling at 986±5 ka. Channell et al. (2009) delimited the age of the Jaramillo subchron by astronomic calibration (base 1071 ka, top 990 ka). To provide additional absolute ages on this geomagnetic period, which is critical to improve our knowledge of the earth magnetic field behaviour, we have carried out a study combining paleomagnetism and isotopic dating of a lava sequence from Tenerife island. This sequence of basaltic lava flows is some 500 m thick. The first 400 m present, based on field magnetometer measurements, normal polarity lavas, with dykes of normal and reverse polarity, passing at the top to reverse polarity lavas. Preliminary K-Ar ages bracketed this sequence between 1018 ± 18 ka and 978 ± 17 ka. Therefore, the upper Jaramillo reversal at least appeared to be potentially recorded in this sequence. A more detailed paleomagnetic study was then carried out to more precisely delimit the reversal itself (see Laj et al., session EMRP3.4). We have undertaken 40Ar/39Ar incremental heating and unspiked K-Ar experiments on groundmass from four transitionally magnetized flows. The first transitional flow is K-Ar dated at 993 ± 18 ka and 40Ar/39Ar dated at 991 ± 13 ka, the second at 981 ± 17 ka (K-Ar) and 1000 ± 13 ka (40Ar/39Ar), the third at 950 ± 17 ka (K-Ar) and 1000 ± 8 ka (40Ar/39Ar) and the fourth at 984 ± 17 ka (K-Ar) and 977 ± 12 (40Ar/39Ar). 40Ar/39Ar ages and K-Ar ages (relative to FCT 28.02 Ma) are indistinguishable at 2σ. The age of the upper boundary of the Jaramillo event calculated combining 40Ar/39Ar ages and K-Ar ages is 992 ± 6 ka, in agreement with previous estimates.

  7. Photoionization of Ar VIII

    Science.gov (United States)

    Liang, Liang; Jiang, Wen-xian; Zhou, Chao

    2017-01-01

    The photoionization cross section, energy levels and widths of 22 Rydberg series (in the autoionization region) for Na-like Ar VIII were investigated by using of R-matrix method. The relativistic distorted-wave method is used to calculate the radial functions, and QB method of Quigly-Berrington [Quigley et al. 1998] is employed to calculate the resonance levels and widths. We have identified the formant in the figure of the photoionization cross section.

  8. Ars Electronica tulekul / Rael Artel

    Index Scriptorium Estoniae

    Artel, Rael, 1980-

    2003-01-01

    6.-11. IX toimub Austrias Linzis "Ars Electronica" festival, mille teema on "Code - The Language of Our Time". Festivali kavast, osalejatest, ava-performance'ist "Europe - A Symphonic Vision", näitusest "Cyberarts 2003. Prix Ars Electronica"

  9. ARABIC LIGHT STEMMER (ARS

    Directory of Open Access Journals (Sweden)

    ASMA AL-OMARI

    2014-12-01

    Full Text Available Stemming is a main step used to process textual data. It is usually used in several types of applications such as: text mining, information retrieval (IR, and natural language processing (NLP. A major task in stemming is to standardize words; which can be achieved by reducing each word to its base (root or stem. Arabic stemming is not an easy task. Unlike other languages, Arabic language is a highly inflected language, since it uses many inflectional forms. Researchers are divided on the benefit of using stemming in fields of IR, NLP...etc., since in Arabic the morphological variants of a certain word are not always semantically related. The aim of this paper is to design and implement a new Arabic light stemmer (ARS which is not based on Arabic root patterns. Instead, it depends on well defined mathematical rules and several relations between letters. A series of tests were conducted on ARS stemmer to compare its effectiveness with the effectiveness of two other Arabic stemmers. Test shows clearly the effectiveness superiority of ARS compared to effectiveness of these two Arabic stemmers.

  10. AO Psc time keeping

    Science.gov (United States)

    Bonnardeau, Michel

    2015-07-01

    Eleven seasons, from 2004 to 2014, of photometric monitoring of the intermediate polar AO Psc are presented and are compared with previous observations. The spin up of the white dwarf is found to be slowing down. The amplitudes of the modulated and non-modulated components of the brightness are found to have undergone a major change in 2007.

  11. Custo-utilidade do tratamento do glaucoma primário de ângulo aberto no Brasil

    Directory of Open Access Journals (Sweden)

    Ricardo Augusto Paletta Guedes

    2016-02-01

    Full Text Available RESUMO Objetivo: Determinar a estratégia mais custo-efetiva para o tratamento do glaucoma primário de ângulo aberto em fase inicial, comparando-se as seguintes alternativas: observação, tratamento clínico ou tratamento com laser. Métodos: Por meio de um modelo de Markov, sob a perspectiva do Sistema Único de Saúde (SUS e um horizonte da expectativa de vida média da população brasileira. Comparou-se a razão de custo-utilidade incremental (ICUR entre 3 alternativas de tratamento, assim como seus custos e o ganho em qualidade de vida, medido em QALY (Quality-adjusted life years. Resultados: A ICUR do tratamento inicial com laser e do tratamento inicial com colírios, em relação a não tratar foi de R$ 2.811,39/QALY e R$ 3.450,47/QALY, respectivamente. Ambas as estratégias foram custo-efetivas, com uma discreta vantagem para o tratamento a laser. Esta diferença diminui ainda mais quando se aumenta a idade de entrada no modelo. As duas alternativas propiciaram ganhos significativos de qualidade de vida (em torno de 2,5 QALYs para o tratamento com laser e de 5,0 QALYs para o tratamento com colírios. Conclusão: Tanto o tratamento primário com trabeculoplastia a laser quanto com medicações foram custo-efetivos e proporcionaram ganhos reais de qualidade de vida quando comparados com o não tratamento do GPAA.

  12. Influência da temperatura e velocidade do ar na secagem de manjericão (Ocimum basilicum L. com relação aos teores de óleos essenciais e de linalol Influence of drying temperature and air velocity related to essential oil and linalol contents of the basil (Ocimum basilicum L.

    Directory of Open Access Journals (Sweden)

    Rilvaynia Dantas Soares

    2007-08-01

    Full Text Available Neste trabalho, objetivou-se estudar a influência de quatro temperaturas de ar de secagem (40, 50, 60 e 70 ºC, em camada fina, e duas velocidades do ar (0,9 e 1,9 m/s sobre o teor de linalol do manjericão (Ocimum basilicum L. Utilizou-se um secador de bandejas especialmente desenvolvido, no laboratório de Secagem da UESB, Campus de Itapetinga-BA. Foram feitas quatro repetições, com 100 g de folhas frescas em cada uma das cinco bandejas da câmara de secagem. Na extração do óleo essencial, utilizou-se um sistema de destilação por arraste a vapor e a análise do óleo essencial foi realizada em um cromatógrafo conectado a um e espectrômetro de massa (CG-MS. Os maiores rendimentos de óleos essenciais de manjericão foram obtidos no processo de secagem com temperatura do ar igual a 40 ºC e 1,9 m/s de velocidade do ar. Os maiores rendimentos de linalol foram obtidos com temperatura do ar de secagem na faixa de 50 a 60 ºC e 1,9 m/s de velocidade do ar (2,23 e 2,47 ppm, respectivamente. Por análise de regressão, estimou-se que a temperatura de 54,4 ºC e a velocidade de 1,9 m/s forneceriam o maior rendimento de linalol. Concluiu-se que a composição química do óleo essencial do manjericão é afetada tanto pela temperatura como pela velocidade do ar de secagem.This work aimed to study the influence of four thin layer drying temperatures (40, 50, 60 and 70 ºC and two air velocities (0.9 and 1.9 m/s in the content of linalol of the Basil (Ocimum basilicum L.. It was used a tray dryer specially built for this experiment in the drying laboratory of the UESB at the "Campus de Itapetinga-Ba". There were made four repetitions with 100 g of fresh leaves in each one of the five trays in the dry chamber In the extraction of the essential oil, a vapor hauling system was used and the oil analysis was made in a gas chromatographer that was connected to a mass spectrometer (CG-MS. The greatest extracted profits of basil's essential oil were

  13. Das políticas ao cotidiano: entraves e possibilidades para a educação do campo alcançar as escolas no rural De las políticas a la vida cotidiana: obstáculos y oportunidades para que la educación del campo alcance las escuelas rurales From policies to everyday life: barriers and opportunities for country education to access the rural schools

    Directory of Open Access Journals (Sweden)

    Ludmila Oliveira Holanda Cavalcante

    2010-09-01

    Full Text Available O presente artigo visa a trazer para o debate os questionamentos em torno da viabilidade das políticas de educação do campo nos territórios do rural brasileiro. Entre a política de direitos e a cultura de direitos, vale a reflexão de como a "educação do campo", ao alcançar o universo retórico e legalista das políticas educacionais brasileiras já no século XXI, pode de fato ser apropriada pelos (significativos pedaços do rural que não se encontram em "movimento" (este rural ainda sob a lógica da produção capitalista, muitas vezes inerte ao mundo de lutas e labutas dos movimentos sociais em diferentes cantos do Brasil nos últimos vinte anos. O texto aponta para a necessidade de aguçar o debate sobre questões importantes que circundam a educação do rural que se transforma em "campo" e que, ironicamente, pode estar ainda longe de ser implementada entre a noção de um campo ou outro.Este artículo pretende aportar al debate de los planteos relacionados con la viabilidad de las políticas de educación del campo en las zonas rurales de Brasil. Entre la política de derechos y la cultura de derechos vale la reflexión de cómo la "Educación del campo", al alcanzar el universo retórico y legalista de la política educativa brasileña ya en el siglo XXI, puede, de hecho, ser apropiada por partes (significativas de la población rural que no están en "movimiento" (este mundo rural, todavía bajo la lógica de la producción capitalista, muchas veces, ajeno al mundo de los afanes y las luchas de los movimientos sociales en los distintos rincones de Brasil en los últimos veinte años . El texto señala la necesidad de estimular el debate sobre cuestiones importantes de la educación de la zona rural que se convierte en "campo" y que, irónicamente, aún puede estar lejos de ser implementada entre la noción de un campo u otro.This present article aims to discuss the viability of country education policies at the rural territories

  14. A Estrutura de Propriedade, Os Benefícios Privados de Controle e o Valor das Empresas de Capital Aberto no Brasil

    OpenAIRE

    Fernando Correia de Araújo Filho, Luiz

    2003-01-01

    A governança corporativa das empresas tem sido tema de vários trabalhos, nacionais e internacionais, e, considerado por instituições, como o Banco Mundial, questão fundamental para a viabilidade do crescimento econômico de países emergentes. Nesse sentido, essa dissertação investiga a estrutura de propriedade característica da empresa de capital aberto no Brasil, o potencial de apropriação de benefícios privados de controle e os custos de agência decorrentes das características observadas de ...

  15. Grau de exposição a praguicidas organoclorados em moradores de aterro a céu aberto Levels of exposure to organochlorine pesticides in open-air dump dwellers

    Directory of Open Access Journals (Sweden)

    Eladio Santos Filho

    2003-08-01

    Full Text Available OBJETIVO: Estimar o grau de exposição interna aos praguicidas organoclorados (POP dos moradores de um atêrro a céu aberto. MÉTODOS: Estudo observacional, de aferição simultânea e controlado, cujo fator de estudo foi residir em área contaminada por POP e o efeito foi a concentração sanguínea dessas substâncias. A população de estudo foi de 238 pessoas residentes em um aterro a céu aberto (Pilões, no município de Cubatão, SP; e a população de controle ficou dimensionada em 258 pessoas, também residentes no mesmo município (Cota 200. Foram analisados os praguicidas HCB, p-p'DDT, p-p'DDE, p-p'DDD, o-p'DDT, a HCH; b HCH; g HCH; Aldrin; Dieldrin; Endrin; Heptaclor; Heptaclor-epoxi e Mirex. RESULTADOS: Os teores médios sangüíneos de HCB em Pilões foram de 4,66 µg/L, 155 vezes maior que a média na Cota 200 (0,03 µg/L. Em Pilões, os teores médios de DDT total foram de 3,71 µg/L, duas vezes maior do que na Cota 200 (1,85 µg/L e o HCH total apresentou concentrações sangüíneas seis vezes maiores em Pilões, 0,84 µg/L, contra 0,13 µg/L. CONCLUSÕES: Evidenciou-se associação positiva entre residir em Pilões e apresentar teores sangüíneos de POP, com risco muitas vezes maior quando comparado a localidades sem a presença desses contaminantes.OBJECTIVE: To estimate the degree of internal exposure to organochlorine pesticides (persistent organic pollutants, POP among inhabitants of an open-air dump. METHODS: This was an observational study with simultaneous measurement and control, in which the criterion for subjects was that they dwelled in an area contaminated by POP and the effect of such contamination was the concentration of such substances into the blood. The study population consisted of 238 people living on an open-air dump in Pilões, in the municipality of Cubatão, SP, Brazil, and the control population was formed by 258 people, also resident in that municipality, in the Cota 200 district. The following

  16. Seasonal dynamics of a drosophilid (Diptera assemblage and its potencial as bioindicator in open environments Dinâmica sazonal de uma assembléia de drosofilídeos (Diptera e seu potencial como bioindicadora em ambientes abertos

    Directory of Open Access Journals (Sweden)

    Luís Bizzo

    2010-09-01

    ção temporal na maioria dos grupos de espécies de Drosophila. O grupo D. willistoni foi mais abundante nos outonos, enquanto os grupos D. cardini e D. tripunctata foram, respectivamente, expressivos nos invernos e primaveras, e o grupo D. repleta em ambas as estações. As espécies exóticas D. simulans Sturtevant, 1919 (do grupo D. melanogaster e Zaprionus indianus Gupta, 1970 foram mais abundantes nos verões. Em geral, a estrutura desta assembléia não mostrou as mesmas características de ambientes florestais ou urbanos, mas mostrou-se similar às florestas nos invernos e aos urbanizados nos verões. Isto demonstra que esta localidade já pode estar sofrendo impacto da urbanização. Também, este pode ser interpretado como um local facilmente invadido por espécies exóticas, o que pode levar à homogeneização biótica e, portanto, pode por em cheque o uso de assembléias de drosofilídeos como bioindicadores em ambientes abertos.

  17. DA PSICODINÂMICA DO TRABALHO AO DIREITO FUNDAMENTAL AO CONTEÚDO DO PRÓPRIO TRABALHO E AO MEIO AMBIENTE ORGANIZACIONAL SAUDÁVEL

    Directory of Open Access Journals (Sweden)

    Leonardo Vieira Wandelli

    2015-10-01

    Full Text Available O presente artigo procura traçar alguns elementos que pretendem articular como, a partir do discurso jurídico, podem ser significados os aportes sobre saúde e trabalho, especialmente aqueles trazidos pela abordagem da Psicodinâmica do Trabalho. Um caminho, assim, que vai dos estudos sobre sujeito, trabalho e saúde até o Direito Constitucional, que afirma como seu fundamento a dignidade humana, indissociável da centralidade antropológica do trabalho; um vínculo expressado pelo direito fundamental ao trabalho que, aqui, se propõe reconstruir a partir do desvelamento de um direito fundamental ao conteúdo do próprio trabalho, articulado ao conceito de meio ambiente organizacional do trabalho. 

  18. AO Group Annual Report

    Energy Technology Data Exchange (ETDEWEB)

    Olivier, S

    2005-10-04

    The Adaptive Optics (AO) Group in I Division develops and tests a broad range of advanced wavefront control technologies. Current applications focus on: Remote sensing, High power lasers, Astronomy, and Human vision. In the area of remote sensing, the AO Group leads a collaborative effort with LLNL's Nonproliferation, Arms Control & International Security (NAI) Directorate on Enhanced Surveillance Imaging. The ability to detect and identify individual people or vehicles from long-range is an important requirement for proliferation detection and homeland security. High-resolution imaging along horizontal paths through the atmosphere is limited by turbulence, which blurs and distorts the image. For ranges over {approx}one km, visible image resolution can be reduced by over an order of magnitude. We have developed an approach based on speckle imaging that can correct the turbulence-induced blurring and provide high resolution imagery. The system records a series of short exposure images which freeze the atmospheric effects. We can then estimate the image magnitude and phase using a bispectral estimation algorithm which cancels the atmospheric effects while maintaining object information at the diffraction limit of the imaging system.

  19. 40Ar/39Ar age calibration against counted annuallayers

    DEFF Research Database (Denmark)

    Storey, Michael; Stecher, Ole

    2008-01-01

    worth exploring for an improved absolute age basis for the 40Ar/39Ar system is through cross-calibration with counted annual layers (e.g. tree rings, varves and ice cores). North Atlantic Ash Zone (NAAZ) II is found within the dated part of the annual Greenland ice core record. NAAZ II has been...

  20. Uma educação pela natureza: vida ao ar livre e métodos terapêuticos nas colônias de férias infantis do Estado de São Paulo (1940 Education through nature: open-air life and therapeutic methods at summer camps in the state of São Paulo (1940

    Directory of Open Access Journals (Sweden)

    André Dalben

    2011-04-01

    Full Text Available A montanha e o litoral afirmam-se no imaginário urbano paulista da década de 1940 como propícios locais para a instalação de colônias de férias infantis. O clima, a altitude, a água e o sol, são elementos naturais próprios dessas localidades, considerados cientificamente como instrumentos capazes de revigorar as fragilidades orgânicas das crianças que tiveram a sua saúde deteriorada pelos agitados ritmos e artifícios oriundos da vida urbana. Organizam-se, assim, nessas instituições extraescolares, procedimentos médico-educativos para as férias infantis, transformando-as em tempo destinado à educação e ao fortalecimento do corpo. O artigo tem por objetivo estudar essa educação do corpo realizada nas colônias de férias infantis que, ao privilegiar a natureza e seus elementos, afirma e desenha comportamentos e formas de uma vida higiênica para a cidade e seus moradores.The mountains and the coast are present in the urban imaginary of São Paulo State in the 1940's as appropriate spots for summer camps. The climate, the altitude, the water and the sun are natural elements at these places, scientifically considered as instruments able to restore organic frailties of children who have their health spoiled by the disturbing pace and stratagems of their urban lifestyle. Therefore, educational and medical procedures are organized at these school holiday institutions, turning them into time dedicated to educate and strengthen the body. This article aims to study this education of the body performed in summer camps that, by privileging nature and its elements, reinforces and draws behaviors and manners of a hygienic lifestyle for the city and its dwellers.

  1. Performance of cultivars of arugula under shade screens and open field /Desempenho de cultivares de rúcula sob telas de sombreamento e campo aberto

    Directory of Open Access Journals (Sweden)

    Sérgio Batista Silva de Souza

    Full Text Available Considering the increasing economic importance and due to the lack of technical information for growing arugula in tropical regions, it was evaluated the performance of arugula cultivated under different shade screens and at open field. Eight treatments were evaluated in a 2x4 factorial design, with two cultivars (Cultivada and Folha Larga x four crop environments (open field, greenhouse shading with 30%, 40% and 50%, with four replications in randomized blocks. The evaluated were plant height, leaf number, fresh and dry matter of the above ground part. Cultivars Folha Larga and Cultivada, showed satisfactory yield: that production in the open field showed acceptable values, showing viable cultivation in the winter in Cáceres-MT, even in warm temperatures, especially for early harvest at around 37 days after sowing. However, cultivation of arugula is favored using 50% shade screen, which can increase the production about 43%.Pelo crescente aumento da importância econômica e perante a escassez de informações técnicas para o cultivo da rúcula em regiões tropicais, avaliou-se o desempenho de rúcula cultivada sob diferentes telados de sombreamento e a campo aberto. Foram avaliados oito tratamentos em esquema fatorial 2x4, sendo duas cultivares (Cultivada e Folha Larga x quatro ambientes de cultivo (campo aberto, telado com sombrite 30%, 40% e 50% com quatro repetições, em blocos casualizados. As características avaliadas foram altura da planta, número de folhas e massas de matéria fresca e de matéria seca parte aérea. Foi observado que as cultivares Folha Larga e Cultivada apresentaram produção satisfatória: a produção em campo aberto apresentou valores aceitáveis, mostrando-se viável o cultivo no período de inverno em Cáceres-MT, mesmo sob temperaturas cálidas, principalmente para colheitas antecipadas por volta dos 37 dias após a semeadura. Porém, o cultivo de rúcula é favorecido sob tela preta 50%, que pode

  2. Criação intensiva de suínos em confinamento ou ao ar livre: estudo meta-analítico do desempenho zootécnico nas fases de crescimento e terminação e avaliação de carcaça e carne no Longissimus dorsi Intensive pig production in confinement or outdoor systems: a meta-analytical study of the production performance in the growing and finishing phases and carcass and meat evaluation from the Longissimus dorsi

    Directory of Open Access Journals (Sweden)

    Alice Bogoni Demori

    2012-07-01

    Full Text Available Uma meta-análise foi realizada para avaliar o desempenho e a qualidade de carcaça e carne de suínos em função do sistema de alojamento nas fases de crescimento/terminação. Foram selecionadas publicações indexadas com resultados de experimentos comparando variáveis de desempenho e de pós-abate de suínos alojados em sistemas intensivos convencionais ou ao ar livre. A base de dados contemplou 27 artigos publicados entre 1997 e 2009. Ao total, foram considerados 2.985 animais e 701 médias na análise de dados. A meta-análise foi realizada através de duas análises sequenciais: gráfica e de variância-covariância. O sistema de criação de suínos ao ar livre aumentou em 9% (P0,05 pelo sistema de alojamento dos suínos. Concluiu-se que o sistema de criação influencia no desempenho dos suínos, mas não interfere nas características de carcaça e carne estudadas.A meta-analysis was carried out to study performance and characteristics of carcass and meat in pigs in function of housing system during the growing/finishing period. Indexed publications with results of experiments comparing performance and post-slaughter variables of pigs housed in outdoor or conventional intensive systems were selected. In total, 2.985 animals and 701 averages were considered in the data analysis. Meta-analysis followed two sequential analyses: graphic and variance. The outdoor productive system increased in 9% (P0.05 by the housing system. It is concluded that the housing system influences the pig performance, but does not interfere in characteristics of carcass and meat.

  3. Teste de desencadeamento aberto no diagnóstico de alergia à proteína do leite de vaca Open challenge for the diagnosis of cow's milk protein allergy

    Directory of Open Access Journals (Sweden)

    Fernanda Ferreira Correa

    2010-04-01

    Full Text Available OBJETIVO: Relatar os resultados de testes de desencadeamento aplicados em crianças alimentadas com dieta de exclusão das proteínas do leite de vaca. DESCRIÇÃO: Estudo transversal que avaliou testes de desencadeamento oral aberto, com leite de vaca, realizados sob supervisão em ambiente hospitalar por 2,5 horas e ambulatoriamente por 30 dias quando não ocorreu reação imediata. Foram incluídos 121 pacientes, com idades entre 4 e 95 meses. O teste de desencadeamento com leite de vaca foi positivo em 28 (23,1% pacientes. Manifestação clínica de alergia ao leite de vaca diferente da apresentada por ocasião da suspeita diagnóstica ocorreu em 12 (42,9% pacientes com desencadeamento positivo. O desencadeamento positivo foi mais frequente (p = 0,042 nos pacientes alimentados com fórmulas extensamente hidrolisadas ou de aminoácidos (30,3% quando comparados com os alimentados com outras dietas de exclusão (14,5%. CONCLUSÃO: O teste de desencadeamento permitiu que fosse suspensa a dieta de exclusão de grande parte dos pacientes.OBJECTIVES: To report the results of open challenge tests performed in children fed with cow's milk-free diet. DESCRIPTIONS: Cross-sectional study evaluating cow's milk open challenge performed under supervision in a hospital setting during 2.5 hours and ambulatory follow-up for 30 days when no immediate reaction occurred. One hundred and twenty-one patients were included, with ages between 4 and 95 months. Cow's milk open challenge tests were positive in 28 patients (23.1%. A clinical manifestation of cow's milk allergy different from the one presented at diagnosis occurred in 12 (24.9% patients with positive challenge. Positive challenge was more frequent (p = 0.042 in patients fed with extensively hydrolyzed formulae or amino acid-based formulae (30.3% when compared to those fed with other exclusion diets (14.5%. CONCLUSION: Open challenge allowed the interruption of exclusion diet in a significant proportion

  4. Sistema aberto ou fechado de nutrição enteral para adultos críticos: há diferença? Open versus closed enteral nutrition systems for critically ill adults: is there a difference?

    Directory of Open Access Journals (Sweden)

    Stella Marys Rigatti Silva

    2012-04-01

    Full Text Available OBJETIVO: Comparar o volume, calorias totais e proteínas recebidos pelos pacientes críticos quando utilizada nutrição enteral (NE por sistema aberto (SA e sistema fechado (SF; identificar os principais motivos para interrupção da NE. MÉTODOS: Estudo de coorte em que foram acompanhados adultos internados no Centro de Terapia Intensiva (CTI em dois períodos: em novembro de 2009, quando se adotava SA de NE para a totalidade dos pacientes (n = 85; e entre outubro de 2010 e abril de 2011, quando foi utilizado SF de NE (n = 170. Foram utilizados testes paramétricos e não paramétricos para comparação das variáveis respeitando-se sua distribuição. RESULTADOS: Os grupos assemelharam-se quanto às características clínicas e demográficas. Diferenças de mínima magnitude matemática e de nenhuma relevância clínica foram observadas entre os grupos: mais calorias/quilo foram prescritas ao grupo SA (p OBJECTIVE: To compare the volume, total calories, and protein received by critically ill patients between open and closed enteral nutrition (EN systems and identify the main reasons for EN discontinuation. METHODS: A cohort study in which adult patients admitted to the intensive care unit (ICU were followed-up in two periods: throughout November 2009 with all patients (n = 85 receiving EN using the open system (OS group; and from October 2010 to April 2011 with patients (n = 170 receiving EN using the closed system (CS group. Parametric and nonparametric tests were used to compare the variables, taking into account their distribution. RESULTS: Demographic and clinical characteristics were similar in both groups. There were minor differences with no statistical significance between groups: more calories/kg were prescribed to the OS group (p < 0.001, and a higher volume (mL/kg, p = 0.002 and protein (g/kg, p = 0.001 were prescribed to the CS group. Fasting, enteral feeding or gastrointestinal problems, and performance of procedures and ICU

  5. O combate ao escorpionismo

    Directory of Open Access Journals (Sweden)

    Octavio de Magalhães

    1946-09-01

    Full Text Available O outor estuda os processos de combate aos acidentes pelas picadas dos escorpiões, visando: a Profilaxia e b Terapêutica. Refere-se à luta nos campos e nas cidades e aqui, dentro e fora dos domicílios. Assinala os diferentes métodos para o combate a êsses artrópodos peçonhentos. Fala na luta direta, indireta, na vacinação pelo anaveneno, na propaganda pela educação racional da população contra o perigo dos acidentes. Refere-se à "cata" dos escorpiões, à luta química, ao emprêgo de animais escorpiófagos, á feitura de casas e jardins anti-escorpiões. Na primeira parte do presente trabalho o autor trata da luta química pelo d. D. T. contra os tityus bahiensis e serrulatus, concluindo que êste corpo químico é um poderoso elemento de luta contra êstes escorpiões. Na segunda parte do trabalho, o autor trata da terapêutica dos acidentes. Mostra a necessidade do emprêgo convenientemente da única terapêutica racional e eficaz contra a intoxicação escorpiônica: a soroterapia específica. Assinala a necessidade da injeção de doses maciças de um sôro de alta valência, preparado em bovídeos, para evitar o mais possível o choque anafilático, no menor tempo possível após as picadas. Aconselha o empêgo de anaveneno escorpiônico, para vacinação principalmente de crianças de baixa idade, nos lugares fortemente infestados pelos escorpiões (principalmente Tityus serrulatus, maximé quando no local não houver sôro anti-escorpiônico específico, como meio preventivo contra a gravidade das intoxicações. Cita finalmente os trabalhos recentes de Grasset, Shaasfsma e Hodgson, na África do Sul, que confirmam muitas idéias do autor e mostram a unidade universal do síndromo escorpiônico descrito no Brasil.

  6. Modelos de negócios para periódicos científicos eletrônicos de acesso aberto.

    OpenAIRE

    Katiúcia Araujo Gumeiro

    2011-01-01

    Trata-se de uma pesquisa que estuda o uso de modelos de negócios no contexto da publicação de periódicos científicos eletrônicos de acesso aberto, em que as diferenças disciplinares são consideradas, especificamente quanto às seguintes questões: velocidades de publicação exigidas, financiamentos e particularidades que envolvem a edição de um periódico científico. Tem como objetivo elaborar um modelo que permita identificar os elementos necessários para configurar um modelo de negócios adequad...

  7. O EFEITO DE DIFERENTES RELAÇÕES TRY/LANAA DA DIETA SOBRE A ATIVIDADE EXPLORATÓRIA DE RATOS EM CAMPO ABERTO

    OpenAIRE

    Cruz, Rubens [UNESP; Godinho,Pedro Henrique; Sandra Regina GIMENEZ; José Carlos BARNABÉ

    2009-01-01

    RESUMO: O teor de 5-HT cerebral depende da disponibilidade do Try para o cérebro, expressa pela relação TRY/LANAA da dieta. Como a 5-HT está envolvida em vários comportamentos emocionais, procurou-se verificar o efeito de rações com diferentes valores daquela relação na atividade exploratória de ratos em campo aberto. Vários grupos de 6 ratos machos, adultos, alimentados com rações formuladas com Isolado Protéico de milho (IPM) – baixa relação TRY/LNAA - , farinha des...

  8. Neutron-hole states in 45Ar from p(46Ar,d)45Ar reactions

    CERN Document Server

    Lu, F; Tsang, M B; Bazin, D; Coupland, D; Henzl, V; Henzlova, D; Kilburn, M; Lynch, W G; Rogers, A M; Sanetullaev, A; Sun, Z Y; Youngs, M; Charity, R J; Sobotka, L G; Famiano, M; Hudan, S; Horoi, M; Ye, Y L

    2013-01-01

    To improve the effective interactions in the pf shell, it is important to measure the single particle- and hole- states near the N=28 shell gap. In this paper, the neutron spectroscopic factors of hole-states from the unstable neutron-rich 45Ar (Z=18, N=27) nucleus have been studied using 1H(46Ar, 2H)45Ar transfer reaction in inverse kinematics. Comparison of our results with the particle-states of 45Ar produced in 2H(44Ar, H)45Ar reaction shows that the two reactions populate states with different angular momentum. Using the angular distributions, we are able to confirm the spin assignments of four low-lying states of 45Ar. These are the ground state (f7/2), the first-excited (p3/2), the s1/2 and the d3/2 states. While large basis shell model predictions describe spectroscopic properties of the ground and p3/2 states very well, they fail to describe the s1/2 and d3/2 hole-states.

  9. Ars Poetica : [luuletused] / Mats Traat

    Index Scriptorium Estoniae

    Traat, Mats, 1936-

    2008-01-01

    Sisu: Ars poetica ; Veepeegel ; Kontrollõed ; Mandariiniriik ; Nikolai Siamashvili (1888-1911) ; Kolmekümne kolmas aasta ; Kiri linast 1966 ; Italmaz Nuriyev ; Rudolf Rimmelile mõeldes ; Gennadi Aigi

  10. Pulsed discharge production Ar* metastables

    Science.gov (United States)

    Han, Jiande; Heaven, Michael C.; Emmons, Daniel; Perram, Glen P.; Weeks, David E.; Bailey, William F.

    2016-03-01

    The production of relatively high densities of Ar* metastables (>1012 cm-3) in Ar/He mixtures, at total pressures close to 1 atm, is essential for the efficient operation of an optically pumped Ar* laser. We have used emission spectroscopy and diode laser absorption spectroscopy measurements to observe the production and decay of Ar* in a parallel plate pulsed discharge. With discharge pulses of 1 μs duration we find that metastable production is dominated by processes occurring within the first 100 ns of the gas break-down. Application of multiple, closely spaced discharge pulses yields insights concerning conditions that favor metastable production. This information has been combined with time-resolved measurements of voltage and current. The experimental results and preliminary modeling of the discharge kinetics are presented.

  11. O impacto da lei do bem sobre o desempenho econômico de empresas de capital aberto

    OpenAIRE

    Chaves, Sigrid Kersting

    2016-01-01

    A atividade de Pesquisa, Desenvolvimento e Inovação tem se mostrado indissociável da promoção ao desenvolvimento econômico das nações e da competitividade das empresas sobre suas concorrentes. É neste contexto que se inserem políticas públicas de inovação, dentre elas, os incentivos fiscais concedidos pelo poder público, cujo interesse se justifica pela influência da inovação no crescimento da economia. No ano em que a Lei 11.196 de 2005 (Lei do Bem) completa uma década de benefícios fiscais ...

  12. Analysis list: Ar [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Ar Gonad,Kidney,Prostate + mm9 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/targe...t/Ar.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Ar.5.tsv http://dbarchive.biosciencedbc.jp/...kyushu-u/mm9/target/Ar.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Ar.Gonad.tsv,http://dbarchive.bioscience...dbc.jp/kyushu-u/mm9/colo/Ar.Kidney.tsv,http://dbarchive.bioscienced...bc.jp/kyushu-u/mm9/colo/Ar.Prostate.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Gonad.gml,http://dbarchive.bioscience

  13. 40Ar/39Ar dating of Daqingshan thrust

    Institute of Scientific and Technical Information of China (English)

    LIU Zhenghong; XU Zhongyuan; YANG Zhensheng

    2003-01-01

    The Daqingshan thrust system, to the south of the Shiguai Mesozoic basin, is a complex system of top-to- the-north thrusting tectonic sheets. The thrust system has a complicated evolution due to multi-stage thrusting. In order to date the thrusting events, syntectonic muscovite and biotite grains are respectively analyzed with normal 40Ar/39Ar dating and laser 40Ar/39Ar dating, which yield 2 isochron ages, i.e. 193.74 ± 3.88 Ma and 121.6 ± 1.6 Ma. These ages suggest that faults within the Daqingshan thrust system formed during 2 stages of thrusting, one the early Indosinian and the other the late Yanshanian. The isotopic dating is consistent with field geological relations. Indosinan deformation is evidenced by top-to-the-north thrusting, with the occurrence of a series of large-scale east-west trending thrust faults and folds, while the Yanshanian thrusting is characterized by top-to-the-NNW thrusting. It is superposed on and modifies early Indosinian thrust faults.

  14. O EFEITO DE DIFERENTES RELAÇÕES TRY/LANAA DA DIETA SOBRE A ATIVIDADE EXPLORATÓRIA DE RATOS EM CAMPO ABERTO

    Directory of Open Access Journals (Sweden)

    RUBENS CRUZ

    2009-07-01

    Full Text Available

    RESUMO: O teor de 5-HT cerebral depende da disponibilidade do Try para o cérebro, expressa pela relação TRY/LANAA da dieta. Como a 5-HT está envolvida em vários comportamentos emocionais, procurou-se verificar o efeito de rações com diferentes valores daquela relação na atividade exploratória de ratos em campo aberto. Vários grupos de 6 ratos machos, adultos, alimentados com rações formuladas com Isolado Protéico de milho (IPM – baixa relação TRY/LNAA - , farinha desengordurada de soja – alta relação TRY/LNAA – e IPM suplementado com Try foram observados em campo aberto entre 8º/13º e 25º/30º dias de vigência das respectivas dietas. O grupo mantido com o IPM apresentou médias de locomoção e de exploração vertical (“levantar-se” significativamente maiores (α = 0.05 que os demais no primeiro período de observações. Tais diferenças não foram verificadas na segunda fase de observações, quando os grupos mantidos com o IPM e IPM + Try encontravam-se sob forte depleção protéica. Os resultados sugerem que a menor relação TRY/LNAA da dieta e, provavelmente da 5-HT cerebral, aumenta a atividade exploratória, o que pode significar menor nível de emocionalidade. PALAVRAS – CHAVE: Triptofano; serotonina; atividade exploratória.

  15. Comparação entre os tratamentos aberto e endovascular dos aneurismas da aorta abdominal em pacientes de alto risco cirúrgico Comparison between open and endovascular treatment of abdominal aortic aneurysms in high surgical risk patients

    Directory of Open Access Journals (Sweden)

    Célio Teixeira Mendonça

    2005-09-01

    Full Text Available OBJETIVO: Comparar os resultados dos tratamentos aberto e endovascular de aneurismas da aorta abdominal em pacientes de alto risco cirúrgico. MÉTODOS: O tratamento aberto foi realizado em 31 pacientes, e o endovascular, em 18. Sucesso no tratamento endovascular foi definido como perviedade da endoprótese sem endoleaks ou conversão para tratamento aberto. RESULTADOS: Não houve diferença na mortalidade perioperatória entre o tratamento aberto (dois óbitos [6,45%] em 31 e o endovascular (um óbito [5,55%] em 18 (P = 0,899; também não houve diferença entre a mortalidade tardia no tratamento aberto (dois óbitos [6,9%] em 29 e no endovascular (dois óbitos [11,7%] em 17 (P = 0,572. A taxa de sucesso imediato foi de 100% (31/31 no tratamento aberto e de 66,7% (12/18 no endovascular (P = 0,0006; a taxa de sucesso tardio foi de 100% (27/27 no tratamento aberto e de 73,3% (11/15 no endovascular (P = 0,0047. Os valores médios do tempo de internação na UTI, tempo de internação hospitalar e da perda de sangue para os grupos dos tratamentos aberto e endovascular foram: 65,6 versus 34,1 horas*, 9 versus 5,6 dias* e 932 versus 225 ml*, respectivamente (*P OBJECTIVE: To compare the results of open repair and endoluminal repair of abdominal aortic aneurysms in high surgical risk patients. METHODS: Open repair was performed in 31 patients, and endoluminal repair was performed in 18. Success in the endoluminal repair group was defined as continuing graft function without endoleak or conversion to open repair. RESULTS: No significant difference was found between the perioperative mortality rate for open repair (two deaths [6.45%] in 31 patients and endoluminal repair (one death [5.55%] in 18 patients (P = 0.899; similarly, no significant difference was seen in late mortality between open repair (two deaths [6.9%] in 29 patients and endoluminal repair (two deaths [11.7%] in 17 patients (P = 0.572; The rate of immediate success was 100% (31/31 for

  16. AR DOC: Augmented reality documentaries

    DEFF Research Database (Denmark)

    Vistisen, Peter

    2014-01-01

    Augmented Reality Documentaries (AR DOC) er et ’lille’ Shareplay projekt (ansøgte midler augmented reality cross media løsninger, til at skabe engagerende publikumsformidling...... indenfor oplevelsesindustrien. Projektet har genereret ny viden omkring, hvordan fysisk og digital formidling kan understøttes via Augmented Reality som formidlingsformat....

  17. "Ars Electronica 2009" / Raivo Kelomees

    Index Scriptorium Estoniae

    Kelomees, Raivo, 1960-

    2009-01-01

    30. "Ars Electronica" festival "Human Nature" ("Inimese loomus") Linzis. Osaka ülikooli professori Hiroshi Ishiguro mehaanilis-digitaalsest nukust. Hübriidkunsti kategoorias peapreemia saanud Eduardo Kaci inimtaimest. Konverentsidest. Näitusest "See this Sound", mis oli pühendatud helile kujutavas kunstis

  18. Uma leitura da Carta ao pai de Kafka

    Directory of Open Access Journals (Sweden)

    Filipe Pereirinha

    2015-02-01

    Full Text Available ResumoPode uma carta chegar ao seu destino mesmo quando não é enviada? A Carta ao pai, de Kakfa, serve-nos aqui de balão de ensaio para esboçar uma possível resposta a esta questão. Não se trata, porém, de ler esta carta como se ela traduzisse finalmente, ao pé da letra, o conflito edipiano entre Kafka e o seu pai, mas antes de ver neste suposto conflito – e seus impasses – o limiar de outra coisa bem mais real. Palavras-chave: Kafka; Lacan; letra; sintoma; realFilipe Pereirinha é membro da Antena do Campo Freudiano (ACF - Portugal, associação psicanalítica ligada à New Lacanian School (NLS e à Associação Mundial de Psicanálise (AMP. O seu encontro com a psicanálise de orientação lacaniana aconteceu durante a licenciatura em Filosofia, na Universidade Nova de Lisboa (UNL, e foi determinante no rumo posterior dos seus estudos, tanto ao nível do mestrado em Filosofia, com uma tese sobre o desejo em Deleuze e Lacan, como ao nível do doutoramento em Filosofia Moderna e Contemporânea, com uma tese sobre a questão do sujeito em Lacan. Foi Professor e Investigador na Universidade Lusófona (ULHT, onde esteve ligado, em particular, desde a sua criação, ao Centro de Estudos de Psicanálise (CEP. Tem vários artigos publicados em livros e revistas, nomeadamente em Portugal, França e Brasil. Destacam-se os livros Psicanálise & Arredores e Uma Pedra no Caminho (no prelo. Está em preparação uma coletânea com os artigos mais recentes.

  19. Armenian Astronomical Society (ArAS) activities

    Science.gov (United States)

    Mickaelian, A. M.

    2016-09-01

    A review on the activities and achievements of Armenian Astronomical Society (ArAS) and Armenian astronomy in general during the last years is given. ArAS membership, ArAS electronic newsletters (ArASNews), ArAS webpage, Annual Meetings, Annual Prize for Young Astronomers (Yervant Terzian Prize) and other awards, international relations, presence in international organizations, local and international summer schools, science camps, astronomical Olympiads and other events, matters related to astronomical education, astronomical heritage, amateur astronomy, astronomy outreach and ArAS further projects are described and discussed.

  20. Estudo terapêutico aberto com sulfato de aminosidine na leishmaniose mucosa causada for Leishmania (viannia braziliensis

    Directory of Open Access Journals (Sweden)

    Gustavo A.S. Romero

    1996-12-01

    Full Text Available No período de setembro a novembro de 1994 foram tratados 21 pacientes com leishmaniose mucosa ativa, predominantemente adultos lavradores do sexo masculino, com sulfato de aminosidine intramuscular, I6mg/kg/dia por 20 dias. Treze pacientes eram virgens de tratamento e 8 haviam sido tratados sem sucesso com Glucantime®". O diagnóstico baseou-se inicialmente em crítêrios epidemiolôgicos, clínicos e nos resultados da intrademoireação de Montenegro e a imunofluorescência indireta para anticoipos séricos antileishmânia e durante o acompanhamento nos resultados dos estudos parasitológicos. Sessenta e sete por cento dos pacientes tiveram diagnóstico parasitológico confirmado sendo a inoculação do material de biópsia das lesões em hamsters o método mais sensível. O tempo médio de acompanhamento foi de 12,6 meses. A adesão ao tratamento foi de 100%. Os efeitos colaterais foram dor no local da injeção (86%, proteinúria leve (24%, elevação do nível sérico de creatinina (5% e perda auditiva subclínica em um dos dois pacientes que realizaram audiometria. Obsevou-se cura clínica em 48% dos pacientes e a percentagem acumulada de recidiva foi de 29% (4/14pacientes durante o acompanhamento.

  1. ar

    Directory of Open Access Journals (Sweden)

    P. Fanlo

    Full Text Available A pesar de que el pulmón es el órgano diana por excelencia de la tuberculosis, cualquier otro órgano y sistema puede verse afectado. En este trabajo se revisan las formas de tuberculosis extrapulmonar a excepción de la pleural que requieren del facultativo, en ocasiones, su más valiosa pericia diagnóstica. Desde la temida meningitis tuberculosa, pasando por la afectación insidiosa de la espondilodiscitis, la llamativa afectación ganglionar, la afectación genitourinaria, la pericarditis, para terminar las formas menos frecuentes como la ocular o la cutánea. En cada apartado indicaremos lo más característico con la finalidad de que pueda servir de orientación diagnóstica y terapéutica.

  2. Ars Industrialis, arsindustrialis.org

    Directory of Open Access Journals (Sweden)

    Frédérique Mingant

    2012-03-01

    Full Text Available The arsindustrialis.org website was created in 2005, when the association Ars Industrialis came into being. The association was founded by a group of philosophers and jurists, on the initiative of philosopher Bernard Stiegler, the former director of the IRCAM (Institut de Recherche et Coordination Acoustique/Musique–Institute of Research and Coordination on Acoustic/Music and the current director of the Department of cultural development at the Centre Georges Pompidou (French National Arts C...

  3. Ars Industrialis, arsindustrialis.org

    OpenAIRE

    Frédérique Mingant

    2012-01-01

    The arsindustrialis.org website was created in 2005, when the association Ars Industrialis came into being. The association was founded by a group of philosophers and jurists, on the initiative of philosopher Bernard Stiegler, the former director of the IRCAM (Institut de Recherche et Coordination Acoustique/Musique–Institute of Research and Coordination on Acoustic/Music) and the current director of the Department of cultural development at the Centre Georges Pompidou (French National Arts C...

  4. ARS - Helsinki - 2006 / Galina Balashova

    Index Scriptorium Estoniae

    Balashova, Galina

    2006-01-01

    Steven Holli projekteeritud Kiasma muuseumihoonest Helsingis. Kontseptuaalkunsti näitusest ARS 06 "Reaalsustunne" Kiasmas. Eestlastest esineb Mark Raidpere. Vene kunstnikegrupi AEC+F ja vene kunstnike Juri Vassiljevi ning Aleksandr Ponomarjovi töödest näitusel. Ka Gerda Steineri & Jörg Lenzlingeri (Šveits), Martin & Munoz'i (USA, Hispaania), arvutigraafik Charles Sandisoni (SB), videokunstnik Bill Viola (USA) jt. töödest

  5. Restrição materna de polifenóis e dinâmica ductal fetal na gestação normal: um ensaio clínico aberto

    Directory of Open Access Journals (Sweden)

    Paulo Zielinsky

    2013-09-01

    Full Text Available FUNDAMENTOS: Recentemente demonstramos reversão da constrição ductal fetal após redução da ingesta materna de alimentos ricos em polifenóis (ARP, por sua ação inibidora da síntese das prostaglandinas. OBJETIVOS: Testar a hipótese de que fetos normais no 3º trimestre também melhoram a dinâmica ductal após restrição materna de polifenóis. MÉTODOS: Ensaio clínico aberto com 46 fetos com idade gestacional (IG > 28 semanas submetidos a dois estudos Dopplerecocardiográficos com intervalo de duas semanas, sendo os examinadores cegados para os hábitos alimentares maternos. Um questionário de frequência alimentar validado para esse objetivo foi aplicado e uma dieta com alimentos pobres em polifenóis (< 30 mg/100 mg foi orientada. Um grupo controle de 26 fetos no 3º trimestre foi submetido ao mesmo protocolo. Utilizou-se o teste-t para amostras independentes. RESULTADOS: A IG média foi 33 ± 2 semanas. A média do consumo materno diário de polifenóis (CMDP foi 1277 mg, caindo para 126 mg após orientação (p = 0,0001. Ocorreu diminuição significativa nas Velocidades Ductais Sistólica (VSD e Diastólica (VDD e na relação dos diâmetros ventriculares (VD/VE, assim como aumento do índice de pulsatilidade (IP [VSD = 1,2 ± 0,4 m/s (0,7-1,6 para 0,9 ± 0,3 m/s (0,6-1,3 (p = 0,018;VDD = 0,21 ± 0,09 m/s (0,15-0,32 para 0,18 ± 0,06 m/s (0,11-0,25 (p = 0,016; relação VD/VE = 1,3 ± 0,2 (0,9-1,4 para 1,1 ± 0,2 (0,8 - 1,3 (p = 0,004; IP do ducto = 2,2 ± 0,03 (2,0-2,7 para 2,4 ± 0,4 (2,2-2,9 (p = 0,04]. A IG média dos controles foi de 32 ± 4 semanas, não ocorrendo diferenças significativas no CMDP, nas velocidades ductais, no IP do ducto e na relação VD/VE. CONCLUSÃO: A restrição da ingesta de alimentos ricos em polifenóis no 3º trimestre por duas semanas melhora a dinâmica do fluxo no ducto arterioso fetal e as dimensões do VD.

  6. MEMS AO for Planet Finding

    Science.gov (United States)

    Rao, Shanti; Wallace, J. Kent; Shao, Mike; Schmidtlin, Edouard; Levine, B. Martin; Samuele, Rocco; Lane, Benjamin; Chakrabarti, Supriya; Cook, Timothy; Hicks, Brian; Jung, Paul

    2008-01-01

    This slide presentation reviews a method for planet finding using microelectromechanical systems (MEMS) Adaptive Optics (AO). The use of a deformable mirror (DM) is described as a part of the instrument that was designed with a nulling interferometer. The strategy that is used is described in detail.

  7. Psychodramatic psychotherapy combined with pharmacotherapy in major depressive disorder: an open and naturalistic study Psicoterapia psicodramática combinada ao tratamento medicamentoso no transtorno depressivo maior: um estudo aberto e naturalístico

    OpenAIRE

    Elisabeth Maria Sene Costa; Rosilda Antonio; Márcia Britto de Macedo Soares; Ricardo Alberto Moreno

    2006-01-01

    OBJETIVE: Recent literature has highlighted the role of psychotherapy in the treatment of major depressive disorder. Combined therapies comprising both psychotherapy and pharmacotherapy have presented the best results. Although several kinds of psychotherapies have been studied in the treatment of depressive disorders, there remains a lack of data on psychodramatic psychotherapy in the treatment of major depressive disorder. The objective of this study was to evaluate the impact of psychodram...

  8. Occurrences of Excess 40Ar in Hydrothermal Tourmaline:Interpretations from 40Ar-39Ar Dating Results by Stepwise Heating

    Institute of Scientific and Technical Information of China (English)

    QIU Huaning; PU Zhiping; DAI Tongmo

    2007-01-01

    The occurrences of excess 40Ar within a hydrothermal tourmaline is discussed in term of the analysis data of syngenetic muscovite and tourmaline from the Lushui hydrothermal tin-tungsten deposit in western Yunnan, China, using the 40Ar-39Ar stepwise heating technique. About 80% excess 40Ar was released in the last step when the tourmaline was fused, corresponding to a release of only ~3% 39Ar (K), which indicates that most excess 40Ar was held in the mineral lattice rather than in the channels parallel to the Z-axis. This suggests that the excess 40Ar was incorporated during crystallization and not diffused into the tourmaline during the post-crystallization history.

  9. Ars Memorativa, Ars Oblivionis in Middle English Religious Plays

    Directory of Open Access Journals (Sweden)

    Ciobanu Estella Antoaneta

    2015-12-01

    Full Text Available This paper investigates the multi-layered violence of religious representation in the late medieval York biblical plays, with a focus on the Supper at Emmaus. I read Emmaus (Y40, a play which commemorates the Crucifixion and openly encourages strong anti-Judaism, alongside scenes in an early predecessor pageant, The Crucifixion (Y35, within their contemporary devotional and mnemonic practices, i.e. the confessional Book of Margery Kempe and Thomas Bradwardine’s tract on ars memorativa. Emmaus in particular demonstrates how a fundamentally violent ars memorativa, the legacy of ancient rhetoric to the Middle Ages, also underpins the instruction of the laity in the basics of Christian faith, here with the aid of highly musical prosody and repetition, and thereby hones a biased, intolerant and violence-inured Christian collective memory. To study the York play’s position relative to late medieval mnemonic practices, I frame my analysis within memory studies, enriched with the more specific insights offered by social-psychological, neurobiological and cognitivist studies of memory.

  10. Profilaxia da migrânea: estudo aberto com a venlafaxina em 42 pacientes Prophylaxis of migraine: open study with venlafaxine in 42 patients

    Directory of Open Access Journals (Sweden)

    ESTÊVÃO DEMÉTRIO NASCIMENTO

    1998-12-01

    Full Text Available O presente estudo aberto teve por objetivo avaliar a eficácia da venlafaxina (inibidor da recaptação da serotonina e da noradrenalina na prevenção das crises de migrânea com ou sem aura em 42 pacientes com idade média de 32,5 anos e variação de 13 a 48 anos. O sexo feminino predominou sobre o masculino. A avaliação ocorreu de maio a setembro de 1997. O tempo de avaliação foi de 4 meses. A média de crises por mês era 3,8. Os efeitos colaterais mais consistentes foram a perda de peso, náuseas e vômitos. A venlafaxina mostrou-se eficaz em 37 dos 42 pacientes selecionados (88,07 % com doses variando de 18,75 - 37,5 mg/dia.The present open study intended to show the prophylactic value of venlafaxine (serotonin and noradrenalin reuptake inhibitor in 42 patients with migraine with or without aura during four months, from May to September 1997. The average age was 32.5 years and average crisis was 3.8 per month. Consistent side-effects included loss of weight, nausea and vomit. The efficacy of drug occurred in 37 patients (88.07% with dosis of 18.75 to 37.5 mg/day. We conclude that venlafaxine is an effective drug in prophylaxis of migraine patients.

  11. Cranioplastia primária nos afundamentos do crânio com ferimento aberto do couro cabeludo Primary cranioplasty in open depressed fractures of the skull

    Directory of Open Access Journals (Sweden)

    Darcy de Freitas Vellutini

    1972-06-01

    Full Text Available Os autores referem 13 casos de afundamentos crânio-encefálicos pós-traumáticos com ferimento aberto do couro cabeludo nos quais foi usado o metilmetacrilato em uma única intervenção cirúrgica. A sede do afundamento era frontal em 9 casos, parietal em dois, parieto-temporal em um e parieto-occipital em um. Os afundamentos interessavam apenas a tábua óssea em 5 casos, estavam associados a lesão de dura-mater em três e também do tecido cerebral em 5. Foi realizada cranioplastia simples em 5 casos e, em 8, ela foi precedida de plástica de dura-mater. O seguimento pós-operatório variou de dois meses a dois anos; até o momento não foi assinalada ocorrência de infecção ou de fenômeno de rejeição da prótese que obrigasse a sua retirada.Thirteen cases of open depressed fractures of the skull in which methyl-methacrylate was primarily used are reported. The site of the depressed fractures was frontal in 9 cases, parietal in two, parieto-temporal in one and parieto-occipital in one. In 5 cases, only the bone was injured; in three cases dura mater was damaged; in 5 cases brain and dura mater were damaged. In 5 cases, only a cranioplasty was performed and in 8 cases a dura mater graft was associated. The follow-up was from two months to two years without any complication as infection or rejection of the methylmethacrylate.

  12. PF-AR upgrading project

    CERN Document Server

    Kasuga, T

    2002-01-01

    The upgrading project of the dedicated pulse X-ray source PF-AR has been completed by the end of the 2001 fiscal year. Machine commissioning exclusively using the injector linac was successfully accomplished in the beginning of January 2002. After fine tuning of the machine and cleaning of the vacuum system with the beams from the middle of January to the middle of March, routine operation for users has begun in April. The historical details, commissioning and results of the project are reported. (author)

  13. Características do comitê de auditoria e o desempenho econômico de companhias brasileiras de capital aberto

    OpenAIRE

    Borges, Wemerson Gomes

    2016-01-01

    O desenvolvimento das boas práticas de Governança Corporativa é intrinsicamente relacionado aos dispositivos de controles das organizações e aos processos operacionais e de gestão. É uma obrigação constante às empresas padronizar e aprimorar suas políticas e controles internos como forma de oferecer mais transparência e confiabilidade aos stakeholders. O comitê de auditoria lida de forma intensa com o cumprimento e otimização de processos e procedimentos corporativos e normas contábeis, busca...

  14. Cometas: Das Lendas aos Fatos

    Science.gov (United States)

    Voelzke, M. R.

    O descobrimento de cometas, devido ao seu aparecimento espetacular, tem registro nas mais antigas culturas humanas. A primeira referência situa-se no ano de 1095 antes de Cristo [a.C.; HO; HO, 1962]. A quantidade de registros de descobrimentos cometários, principalmente provenientes do território chinês em particular e do oriente em geral, aumentou gradualmente a partir do quarto século depois de Cristo (d.C.). É de origem chinesa a primeira referência ao cometa P/Halley no ano de 240 a.C. [VOELZKE, 1993]. Com o desenvolvimento da astronomia relativamente às técnicas observacionais os descobrimentos bem como as observações cometárias aumentaram sensivelmente a partir do século XVII, sendo que a partir do século XIX um novo incremento ocorreu devido ao emprego da fotografia e a resultante melhora de sensibilidade na observação.

  15. What to teach to patients with heart failure and why: the role of nurses in heart failure clinics ¿Qué enseñar a los pacientes con insuficiencia cardiaca y por qué?: el papel de los enfermeros en clínicas de insuficiencia cardíaca O que ensinar aos pacientes com insuficiência cardíaca e por quê: o papel dos enfermeiros em clínicas de insuficiência cardíaca

    Directory of Open Access Journals (Sweden)

    Eneida Rejane Rabelo

    2007-02-01

    ón para el manejo de la enfermedad y el desarrollo de la capacidad de autoayuda. En este artículo revisaremos en detalle aspectos de la educación para pacientes con insuficiencia cardiaca dada por enfermeros.O principal objetivo do tratamento da insuficiência cardíaca (IC consiste em alcançar e manter a estabilidade clínica dos pacientes. Vários estudos demonstram que programas multidisciplinares para educação sistemática sobre a doença são estratégias positivas para estes pacientes. Enfermeiros engajados em clínicas de IC desempenham papel fundamental no processo de educação e acompanhamento dos pacientes. Os objetivos deste processo são ensinar, reforçar, melhorar e avaliar constantemente as habilidades dos pacientes para o autocuidado, que incluem a monitorização do peso, a restrição de sódio e de líquidos, a realização de atividade física, o uso regular das medicações, a monitorização de sinais e de sintomas de piora da doença e o contato precoce com a equipe assistencial. Desta forma, a educação para o entendimento da IC, e o desenvolvimento de habilidades para o autocuidado, são considerados chaves para melhorar a adesão, evitar crises de descompensação e conseqüentemente manter a estabilidade clínica dos pacientes. Neste artigo nos revisamos detalhadamente os aspectos envolvidos no processo de educação dispensados aos pacientes por enfermeiros no contexto das clínicas de IC.

  16. Paleozoic accretionary orogenesis in the eastern Beishan orogen: constraints from zircon U-Pb and 40Ar/39Ar geochronology

    Science.gov (United States)

    Ao, Songjian; Xiao, Wenjiao; Windley, Brian; Mao, Qigui

    2016-04-01

    The continental growth mechanism of the Altaids in Central Asia is still in controversy between models of continuous subduction-accretion versus punctuated accretion by closure of multiple oceanic basins. The Beishan orogenic belt, located in the southern Altaids, is a natural laboratory to address this controversy. Key questions that are heavily debated are: the closure time and subduction polarity of former oceans, the emplacement time of ophiolites, and the styles of accretion and collision. This paper reports new structural data, zircon ages and Ar-Ar dates from the eastern Beishan Orogen that provide information on the accretion process and tectonic affiliation of various terranes. Our geochronological and structural results show that the younging direction of accretion was northwards and the subduction zone dipped southwards under the northern margin of the Shuangyingshan micro-continent. This long-lived and continuous accretion process formed the Hanshan accretionary prism. Our field investigations show that the emplacement of the Xiaohuangshan ophiolite was controlled by oceanic crust subduction beneath the forearc accretionary prism of the Shuangyingshan-Mazongshan composite arc to the south. Moreover, we address the age and terrane affiliation of lithologies in the eastern Beishan orogen through detrital zircon geochronology of meta-sedimentary rocks. We provide new information on the ages, subduction polarities, and affiliation of constituent structural units, as well as a new model of tectonic evolution of the eastern Beishan orogen. The accretionary processes and crustal growth of Central Asia were the result of multiple sequences of accretion and collision of manifold terranes. Reference: Ao, S.J., Xiao, W., Windley, B.F., Mao, Q., Han, C., Zhang, J.e., Yang, L., Geng, J., Paleozoic accretionary orogenesis in the eastern Beishan orogen: Constraints from zircon U-Pb and 40Ar/39Ar geochronology. Gondwana Research, doi: http://dx.doi.org/10.1016/j

  17. Interpretation of discordant 40Ar/39Ar age-spectra of mesozoic tholeiites from antarctica

    Science.gov (United States)

    Fleck, R.J.; Sutter, J.F.; Elliot, D.H.

    1977-01-01

    Conventional K-Ar ages of tholeiitic basalts of the Ferrar Group in the central Transantarctic Mountains indicate significant loss of radiogenic 40Ar from this unit over much of its outcrop area. Argon loss varies inversely with amount of devitrified matrix in the basalts, which have not been thermally or tectonically disturbed since extrusion. 40Ar/19Ar age-spectra of these tholeiites are generally discordant and indicate significant inhomogeneity in the distribution of radiogenic 40Ar with respect to 39Ar, but are distinctly different from release patterns of thermally disturbed samples. Amounts of argon redistribution vary directly with amounts of devitrification and are reflected in progressive modification of the age spectra. A model of redistribution of radiogenic 40Ar by devitrification of originally glassy matrix is suggested that is consistent with disturbance of the conventional K-Ar systematics as well as the 40Ar/39Ar age-spectra. Samples with substantial redistribution but minor loss of radiogenic argon yield age spectra whose apparent ages decrease from low-temperature to high-temperature steps, similar to those reported for some lunar basalts, breccias, and soils. Modification of all the age spectra is attributed to redistribution of radiogenic 40Ar during progressive devitrification, although 39Ar-recoil effects suggested by Turner and Cadogan (1974) may be a factor in some cases. Where devitrification involves most potassium sites within the basalt, 40Ar/39Ar age-plateaux may be formed that have no geologic significance. ?? 1977.

  18. Combate ao niilismo e ao totalitarismo em Camus

    Directory of Open Access Journals (Sweden)

    Emanuel Ricardo Germano

    2013-05-01

    Full Text Available A partir de uma leitura da peça Calígula, elaborada entre 1941 e 1943, procurar-se-á contribuir na restituição das preocupações éticas, políticas e filosóficas em cena no teatro de Albert Camus, analisando o sentido de sua expressão teatral no contexto de dois combates,ao niilismo filosófico e ao totalitarismo político de seu tempo. Observaremos em Calígula um importante registro do amadurecimento das leituras de duas heranças filosóficas relevantes na formação intelectual de Camus, Nietzsche e Heráclito, à luz da experiência do totalitarismo, observando e ressaltando com isso a amplitude de seu intertexto filosófico e a importância do aporte ético e político de Camus como pensador multifacetado, engajado nos enfrentamentos históricos e solicitações críticas de seu tempo.

  19. POTENCIAL DOS RECURSOS EDUCACIONAIS ABERTOS PARA INTEGRAÇÃO DAS TECNOLOGIAS E CONVERGÊNCIA ENTRE AS MODALIDADES NA UFSM. POTENTIAL OF OPEN EDUCATIONAL RESOURCES FOR TECHNOLOGY INTEGRATION AND CONVERGENCE BETWEEN THE MODALITIES AT UFSM

    Directory of Open Access Journals (Sweden)

    Elena Maria Mallmann

    2013-11-01

    Full Text Available O foco de análise é a implementação e o fomento de práticas escolares, para potencializar a integração das tecnologias e a convergência entre as modalidades na Universidade Federal de Santa Maria (UFSM, Brasil, por meio de Recursos Educacionais Abertos. Objetivamos sistematizar princípios conceituais e práticas que balizam a utilização de recursos educacionais abertos, com vistas a maximizar diálogo e produção curricular mediados por tecnologias. Os procedimentos metodológicos de pesquisa-ação (planejamento participativo, observação e questionários survey geraram dados para análise referente à programação e à problematização de Recursos Educacionais Abertos, em cursos de graduação e pós-graduação mediados pelo Moodle institucional. Os resultados de acoplamento da pesquisa à ação didático-metodológica inovadora na UFSM evidenciam crescimento exponencial na programação semanal de recursos e atividades de estudo no Moodle. A afirmação conclusiva destaca que a disponibilização e o suporte técnico institucional de tecnologias em rede ampliam condições para integração e convergência entre as modalidades, especialmente no âmbito dos recursos educacionais abertos como hipertextos programados em html. The analysis focus is the implementation and the fomentation of school practices in order to enhance the technology integration and the convergence between the modalities at the Federal University of Santa Maria (UFSM, Brazil, through open educational resources. We aimed to systematize conceptual principles and practices that beacon the use of open educational resources, aspiring to maximize dialogue and curricular production mediated by technologies. The action research methodological procedures (participatory planning, observation and survey questionnaires generated analysis data relative to the programming and problematization of open educational resources, in undergraduate and graduate courses mediated

  20. Adrenoleucodistrofia cerebral ligada ao x

    OpenAIRE

    Ono,Sergio Eiji

    2013-01-01

    Resumo: OBJETIVO: o padrão-ouro em exames de imagem para avaliar a adrenoleucodistrofia ligada ao X é o escore de Loes, baseado na localização, alterações de sinais e grau de atrofia. Os objetivos deste estudo foram avaliar como os parâmetros do tensor de difusão correlacionam com o escore de Loes e avaliar se poderiam indicar alterações estruturais precoces. PACIENTES E MÉTODOS: as medidas do tensor de difusão foram obtidas em 9 locais pré-estabelecidos da substância branca, bilateralmente, ...

  1. Educaçao ambiental

    OpenAIRE

    Carneiro,Danielle

    2013-01-01

    Resumo: A idéia desse trabalho surgiu no momento em que me inseri na comunidade de Pontal do Sul, envolvida em distintas atividades educativas com o mesmo público. Uma delas refere-se ao ensino público fundamental e outra à atividades de pesquisa e Educação Ambiental (EA) dentro de um projeto de extensão universitária. A EA vem sendo realizada de forma diversificada, baseada em diferentes concepções, fundamentadas em princípios e diretrizes construídos num momento de difusão da Ecologia e de ...

  2. Avaliação da eficácia do bimatoprosta 0,03% (Glamigan, Germed, Brasil na redução da pressão intraocular em pacientes com glaucoma primário de ângulo aberto e hipertensão ocular

    Directory of Open Access Journals (Sweden)

    Juliana Almodin

    2012-08-01

    Full Text Available OBJETIVO: Avaliar a eficácia do colírio bimatoprosta 0,03% (Glamigan, Germed, Brasil na redução da pressão intraocular (PIO em pacientes com glaucoma primário de ângulo aberto (GPAA ou hipertensão ocular (HO, bem como avaliar os efeitos colaterais decorrentes do uso da droga no desenho epidemiológico randomizado, controlado. MÉTODOS: Foram avaliados pacientes portadores de GPAA ou HO, acima de 18 anos de idade. Todos os pacientes receberam o colírio Glamigan® como primeira droga a ser introduzida no tratamento, tendo sido utilizada uma gota uma vez ao dia (à noite, e 30 dias após foram submetidos à tonometria de aplanação (Goldmann para mensuração da PIO. RESULTADOS: A amostra do estudo foi composta por 35 (66 olhos pacientes portadores de GPAA e HO, sendo 16 do sexo masculino (45,7% e 19, do feminino (54,3%. A média de idade foi de 66,7 anos, sendo a idade máxima 84 anos. A média de redução da PIO após 30 dias de uso do Glamigan® foi de 6,5mmHg. Em relação aos efeitos colaterais, 17 (26,6% pacientes referiram hiperemia conjuntival, 10 (15,6% a dor, 8 (12,5% o ardor, 5 (7,8% o prurido ocular e 2 (3,1% o embaçamento visual. CONCLUSÃO: A medicação Glamigan® foi eficiente na redução da PIO após 30 dias de uso contínuo, na dose de 1x/dia. Acerca dos efeitos colaterais, os mais observados foram hiperemia ocular (26,6% e dor (15,6%, porém estudos com maior tempo de seguimento dos pacientes se fazem necessários a fim de investigar a importância daqueles na terapia com o Glamigan®.

  3. Ars grammatica de Dionisio Tracio

    Directory of Open Access Journals (Sweden)

    Beltrán Jorge Enrique

    2003-06-01

    Full Text Available

    Ars Grammatica de Dionisio Tracio (170-90 a. C fue la primera gramática griega que se escribió. Su contenido y método fueron modelos que siguieron las gramáticas escolares posteriores. La versión española que se presenta ahora responde a la necesidad que se tenía en nuestro medio de una traducción completa de este texto. Finalmente, se acompaña la traducción de una introducción y de abundantes notas, en un intento por hacerla comprensible para el hablante del español, no necesariamente conocedor de la lengua griega.

  4. Efeito de níveis de água, coberturas do solo e condições ambientais na temperatura do solo e no cultivo de morangueiro em ambiente protegido e a céu aberto Effect of water levels, soil covers and enviroment in maximum soil temperature in strawberry crop in field and greenhouse

    Directory of Open Access Journals (Sweden)

    Regina C. de M. Pires

    2004-12-01

    Full Text Available A temperatura do solo é um importante parâmetro no cultivo do morangueiro, pois interfere no desenvolvimento vegetativo, na sanidade e na produção. O objetivo do presente trabalho foi avaliar o efeito de diferentes níveis de água, coberturas de canteiro em campo aberto e em ambiente protegido, na temperatura máxima do solo no cultivo do morangueiro. Foram realizados dois experimentos: um em cultivo protegido e outro a campo aberto, em Atibaia - SP, em esquema fatorial 2 x 3 (coberturas do solo e níveis de irrigação, em blocos ao acaso, com cinco repetições. As coberturas de solo utilizadas foram filmes de polietileno preto e transparente. A irrigação localizada foi aplicada por gotejo sempre que o potencial de água no solo atingisse -0,010 (N1, -0,035 (N2 e -0,070 (N3 MPa, em tensiômetros instalados a 10 cm de profundidade. A temperatura do solo foi avaliada por termógrafos, sendo os sensores instalados a 5 cm de profundidade. Houve influência do ambiente de cultivo, da cobertura do solo e dos níveis de irrigação na temperatura máxima do solo. A temperatura do solo sob diferentes coberturas dependeu não somente das características físicas do plástico, como também da forma de instalação no canteiro. A temperatura máxima do solo aumentou com a diminuição do potencial da água no solo, no momento da irrigação.The soil temperature is an important parameter in strawberry crop, because, it interferes in vegetative development, plant health conditions and yield. The aim of this work was to evaluate the effect of different water levels, soil covers in field conditions and greenhouse in maximum soil temperature in strawberry crop. Two experiments were accomplished, one in greenhouse and other in field conditions, at Atibaia - SP, Brazil. The experimental design was a factorial 2 x 3 (soil covers and water levels, with 5 repetitions. The soil covers were clear and black plastics. The trickle irrigation was applied

  5. 40Ar/39Ar Interlaboratory Calibration into the Holocene.

    Science.gov (United States)

    Heizler, M. T.; Jicha, B.; Koppers, A. A. P.; Miggins, D. P.

    2015-12-01

    Advances in 40Ar/39Ar analytical precision for very young rocks requires collaborative efforts amongst argon geochronology labs to demonstrate age reproducibility commensurate with high precision. NM Tech (NMT), the University of Wisconsin (UW) and Oregon State University (OSU) have each dated Quaternary flux monitor standard AC-2 sanidine (~1.185 Ma), a blind sanidine described as being 50-100 ka (BS) and sanidine from the Qixiangshan (QIX) flow (~10 ka), Changbaishan volcano, China. The samples were irradiated in a single package with FC-2 sanidine (28.201 Ma) as the flux monitor and the irradiated material was distributed amongst the labs. Heizler was present during analysis at both OSU and UW and Jicha attended OSU during analysis. Physical presence was key towards gaining understanding of individual protocols and prompted valuable discussions. Analyses were carried out on single crystals using total fusion and/or step heating approaches. Age agreement was achieved within 2s uncertainty that ranged between (0.03-0.3%, 0.13-0.37% and 1.8-2.6%) for AC-2, BS and QIX, respectively. Each lab found AC-2 to vary somewhat beyond a normal distribution and to yield an age relative to FC-2 of ~1.185 Ma that is ~1.3% (~5-10 sigma) lower than some published estimates. A key cause of the variation between this study and previous results may be variable gas pressure equilibration times between extraction line and mass spectrometer coupled with variable choices to estimate time zero by other laboratories. The majority of our efforts concentrated on the QIX sanidine where prior data obtained by our labs revealed a factor of two spread in age (~11 and 23 ka) based on experiments carried out by total fusion and bulk incremental heating. By conducting single crystal age spectrum analysis we were able to mitigate effects of melt inclusion hosted excess argon and xenocrystic contamination towards obtaining analytical agreement with apparent ages near 10 ka. However, philosophical

  6. Características de repositório educacional aberto para usuários de língua brasileira de sinais

    Directory of Open Access Journals (Sweden)

    Romario Antunes da Silva

    Full Text Available O objetivo desse artigo é identificar as características que um repositório educacional aberto deve apresentar para atender as necessidade de informação dos alunos surdos e ouvintes do curso Letras Libras na modalidade a distância da Universidade Federal de Santa Catarina. Os objetivos específicos foram: a descrever o perfil dos alunos surdos e ouvintes; b examinar o uso das tecnologias da informação por esses alunos; e c identificar os documentos que um repositório deve apresentar para atender as necessidades de informação desses alunos. A pesquisa é exploratória, descritiva e qualitativo-quantitativa, e a análise foi realizada com estatística descritiva e análise de conteúdo. Conclui-se que os alunos utilizam o e-mail, as listas de discussão, o Messenger, ferramentas para compartilhamento de vídeos e os sites para surdos. Os alunos consideram muito importantes os processadores de texto, Messenger, Movie Maker, Media Player e planilhas para cálculo. Os alunos surdos consideram como documentos mais relevantes as videoaulas, dicionários e apostilas, e os alunos ouvintes, as videoaulas, os livros e as apostilas. O tipo de conteúdo requisitado são notícias sobre surdos, língua brasileira de sinais, tradução, tecnologia, linguística, aprendizagem do português, interpretação médico-jurídica e cultura surda. Os suportes requisitados para acesso à informação são os dicionários, vídeos, livros digitais e artigos. Os alunos preferem acessar as informações no repositório por meio de língua de sinais, legendas e em português.

  7. Concentração de propriedade e desempenho: um estudo nas empresas brasileiras de capital aberto do setor de energia elétrica

    Directory of Open Access Journals (Sweden)

    Naiara Leite dos Santos Sant'Ana

    2016-01-01

    Full Text Available Resumo A concentração de propriedade há muito vem sendo estudada para verificar se impacta no desempenho das empresas. O presente artigo tem por objetivo verificar se a estrutura de propriedade, mais especificamente a concentração de propriedade, tem algum impacto no desempenho das empresas do setor elétrico. Embora sejam numerosos os trabalhos que tratam sobre a relação de Desempenho e Concentração de Propriedade, este se propõe a apresentar uma proposta de abordagem metodológica por meio de uma nova combinação de variáveis. O trabalho busca reacender a discussão da concentração de propriedade no Brasil e a identidade desses acionistas em um cenário peculiar de escândalos de má gestão, controle de resultados e corrupção de empresas no Brasil, sob a óptica da relação entre capital privado e público, com a análise sendo feita no setor de energia elétrica. O estudo foi realizado por meio da análise de dados em painel. A amostra compôs-se de 22 empresas brasileiras de capital aberto do setor de energia elétrica analisadas nos anos de 2010 a 2014. Verificou-se melhor desempenho das empresas privadas em comparação com as públicas, das empresas com ações ordinários nas mãos de apenas um acionista majoritário e relação positiva com o lucro líquido. Por outro lado, as variáveis relativas às ações ordinárias nas mãos de dois maiores acionistas e ativo total apresentaram relação negativa com o desempenho.

  8. Conteúdos abertos e compartilhados: novas perspectivas para a educação Open and shared contents: new perspectives for education

    Directory of Open Access Journals (Sweden)

    Osmar Mantovani

    2006-04-01

    Full Text Available Mudanças em curso no cenário de produção e divulgação de conhecimentos bem como algumas questões importantes indutoras de tais mudanças são apontadas. A principal é o desbalanceamento, cada vez maior, entre os interesses da indústria cultural e os da sociedade, em favor da primeira, provocado, em anos recentes, por mudanças sucessivas no direito de propriedade intelectual por pressão da mesma indústria cultural que tem, hoje, o seu modelo de negócio ameaçado por práticas apoiadas por novas tecnologias de informação e comunicação e, especificamente, pela Internet. Tal desbalanceamento cerceia, em particular, a escola na escolha dos recursos mais apropriados para a educação de seus alunos. Um contramovimento promove "conteúdos abertos". Um ambiente que foi desenhado para apoiar a comunidade escolar na publicação e no compartilhamento de conteúdos para, dessa forma, ajudá-la a promover uma educação com parâmetros mais democráticos e adequados às transformações em curso é apresentado.Ongoing changes in the scenario of knowledge production and dissemination as well as some of the important issues that induced them are pointed out. The main one is an increasing shift of balance from the interests of society to those of the culture industry promoted, these last years, by successive amendments to the intellectual property rights. These were passed under the pressures of that industry whose business model is nowadays threatened by the practices supported by the new information and communication technologies and the Internet in particular. Such shift of balance specifically limits schools in their choices of the most appropriate resources to educate their students. A counter-movement is promoting "open contents" through an environment, presented here, designed to support the school community in publishing and sharing tasks. It is aimed at helping that community promote an education with more democratic and better

  9. Lévi-Strauss nos 90 voltas ao passado

    Directory of Open Access Journals (Sweden)

    Lévi-Strauss Claude

    1998-01-01

    Full Text Available Este artigo responde às críticas formuladas por Christian Delacampagne e Bernard Traimond em "A Polêmica Sartre/Lévi-Strauss Revisitada. Nas Raízes das Ciências Sociais de Hoje", publicado em Les Temps Modernes 596 (novembro-dezembro de 1997. Para fazê-lo, recorda inicialmente o caráter relativo da oposição entre "sociedades frias" e "sociedades quentes". Em seguida, refuta a tese de que Maurice Merleau-Ponty, sob a capa de um elogio, teria dirigido críticas veladas ao autor. Finalmente, reconhecendo o afastamento da antropologia de hoje em face das posições do autor, admite, sem se pronunciar sobre o valor desse movimento, que temas de ar sartriano ressurgem nos antropólogos contemporâneos.

  10. Re-Evaluation of Ar-39 - Ar-40 Ages for Apollo Lunar Rocks 15415 and 60015

    Science.gov (United States)

    Park, J.; Nyquist, L. E.; Bogard, D. D.; Garrison, D. H.; Shih, C.-Y.

    2010-01-01

    We re-analyzed 39Ar-40Ar ages of Apollo lunar highland samples 15415 and 60015, two ferroan anorthosites analyzed previously in the 1970 s, with a more detailed approach and with revised decay constants. From these samples we carefully prepared 100-200 mesh mineral separates for analysis at the Noble Gas Laboratory at NASA-Johnson Space Center. The Ar-39-Ar-40 age spectra for 15415 yielded an age of 3851 +/- 38 Ma with 33-99% of Ar39 release, roughly in agreement with previously reported Ar-Ar ages. For 60015, we obtained an age of 3584 +/- 152 Ma in 23-98% of Ar39 release, also in agreement with previously reported Ar-Ar ages of approximately 3.5 Ga. Highland anorthosites like these are believed by many to be the original crust of the moon, formed by plagioclase floatation atop a magma ocean, however the Ar-Ar ages of 15415 and 60015 are considerably younger than lunar crust formation. By contrast, recently recovered lunar anorthosites such as Dhofar 489, Dhofar 908, and Yamato 86032 yield older Ar-Ar ages, up to 4.35 Ga, much closer to time of formation of the lunar crust. It follows that the Ar-Ar ages of the Apollo samples must have been reset by secondary heating, and that this heating affected highland anorthosites at both the Apollo 15 and Apollo 16 landing sites but did not affect lunar highland meteorites. One obvious consideration is that while the Apollo samples were collected from the near side of the moon, these lunar meteorites are thought to have originated from the lunar far side

  11. Como responder ao momento presente?

    Directory of Open Access Journals (Sweden)

    Maria Filomena Molder

    2013-06-01

    Full Text Available Foi com esta pergunta — já um efeito de um primeiro encontro entre Irene Pimentel e eu própria — que decidimos desafiar colegas, estudantes e funci­onários da nossa Faculdade, FCSH (Faculdade de Ciências Sociais e Huma­nas, de outras Faculdades da Universidade Nova de Lisboa, de outras Uni­versidades e todos os interessados em con­siderar e discutir em comum aquilo que se passava em Portugal e que no anúncio da Jornada de 6 de De­zembro de 2012 se descrevia como um “processo de desmantela­mento social, económico e cultural sem precedentes — pese embora tantas compara­ções, baseadas na premissa da ‘eterna repetição’ — e cujas consequências não param de exceder as previsões dos responsáveis por esse desmantelamento”. Acedendo com todo o empenho e gratidão ao convite que me foi dirigido por Humberto Brito para fazer uma resenha da Jornada a publicar no primeiro número de Forma de Vida (saúdo a revista e o título, decidi-me, no entanto, a pôr de lado a resenha, que sob a forma de “Editorial” será em breve publi­cada no blogue Responder ao Momento Presente, entre­tanto criado, conjuntamente com os textos escritos pelos nossos convidados, com as parti­cipações de pessoas que corresponderam ao nosso apelo e ainda com contri­bui­ções que se alargaram para lá da Jornada; a que se juntará uma gravação em video, também disponível no Youtube. Texto publicado originalmente em Forma de Vida, Lisboa, n.1, fev. 2013. Agrade­cemos à autora por permitir a republicação neste número do Boletim. [N.E.

  12. Aspectos clinicopatológicos da intoxicação por arsênio orgânico em bovinos

    OpenAIRE

    Maiara Aline Gonçalves

    2015-01-01

    O arsênio é um metaloide encontrado nas formas orgânica e inorgânica em estado de oxidação trivalente ou pentavalente. Na medicina veterinária a intoxicação por arsênio foi associada, no passado, ao contato acidental com pesticidas e ao uso indevido de medicamentos à base de arsênio inorgânico. Atualmente a intoxicação em bovinos tem sido relatada devido à exposição prolongada a ambientes contaminados. No Brasil, devido à proibição do uso de arsênio inorgânico na formulação de pesticidas, her...

  13. Study of the symbiotic star AR Pavonis

    Directory of Open Access Journals (Sweden)

    C. Quiroga

    2001-01-01

    Full Text Available We present a study of the optical spectra and linear polarization of the eclipsing binary AR Pavonis. The optical spectra were obtained between 1990 and 1998, and polarimetric data between 1995 and 1998. From spectroscopic variations along the orbital motion we analized the nature of the system. Polarimetric studies indicate that AR Pav has intrinsic polarization.

  14. Aerosol Observing System (AOS) Handbook

    Energy Technology Data Exchange (ETDEWEB)

    Jefferson, A

    2011-01-17

    The Aerosol Observing System (AOS) is a suite of in situ surface measurements of aerosol optical and cloud-forming properties. The instruments measure aerosol properties that influence the earth’s radiative balance. The primary optical measurements are those of the aerosol scattering and absorption coefficients as a function of particle size and radiation wavelength and cloud condensation nuclei (CCN) measurements as a function of percent supersaturation. Additional measurements include those of the particle number concentration and scattering hygroscopic growth. Aerosol optical measurements are useful for calculating parameters used in radiative forcing calculations such as the aerosol single-scattering albedo, asymmetry parameter, mass scattering efficiency, and hygroscopic growth. CCN measurements are important in cloud microphysical models to predict droplet formation.

  15. The Coronae of AR Lac

    CERN Document Server

    Huenemoerder, D P; Drake, J J; Sanz-Forcada, J; Canizares, Claude R.; Drake, Jeremy J.; Huenemoerder, David P.; Sanz-Forcada, Jorge

    2003-01-01

    We observed the coronally active eclipsing binary, AR Lac, with the High Energy Transmission Grating on Chandra for a total of 97 ks, spaced over five orbits, at quadratures and conjunctions. Contemporaneous and simultaneous EUV spectra and photometry were also obtained with the Extreme Ultraviolet Explorer. Significant variability in both X-ray and EUV fluxes were observed, dominated by at least one X-ray flare and one EUV flare. We saw no evidence of primary or secondary eclipses. X-ray flux modulation was largest at high temperature, indicative of flare heating of coronal plasma. Line widths interpreted in terms of Doppler broadening suggest that both binary stellar components are active. From line fluxes obtained from total integrated spectra, we have modeled the emission measure and abundance distributions. A strong maximum was found in the differential emission measure, characterized by peaks at log T = 6.9 and 7.4, together with a weak but significant cooler maximum near log T=6.2, and a moderately str...

  16. Cartografar é traçar um plano comum

    Directory of Open Access Journals (Sweden)

    Virgínia Kastrup

    2013-08-01

    Full Text Available A pesquisa de campo sobre produção da subjetividade enfrenta o problema de construir conhecimento envolvendo pesquisadores e pesquisados, com territórios e semióticas singulares. Surgem questões relativas ao protagonismo dos participantes e a como traçar com eles um plano comum, garantindo o caráter participativo da pesquisa. No contexto do método da cartografia, o artigo tem como objetivo tratar do tema do comum num duplo aspecto. Num primeiro, discute o acesso ao plano comum. Com base em Gilles Deleuze e Felix Guattari, tal plano não é dito homogêneo nem reúne atores que manteriam entre si relações de identidade, mas opera comunicação entre singularidades, sendo pré-individual e coletivo. Num segundo aspecto, aponta que, enquanto pesquisa-intervenção, a cartografia se compromete com a criação de um mundo comum e heterogêneo. O artigo mostra que o traçado do comum tem como diretriz metodológica a tranversalidade e examina os procedimentos de participação, inclusão e tradução.

  17. Revised error propagation of 40Ar/39Ar data, including covariances

    Science.gov (United States)

    Vermeesch, Pieter

    2015-12-01

    The main advantage of the 40Ar/39Ar method over conventional K-Ar dating is that it does not depend on any absolute abundance or concentration measurements, but only uses the relative ratios between five isotopes of the same element -argon- which can be measured with great precision on a noble gas mass spectrometer. The relative abundances of the argon isotopes are subject to a constant sum constraint, which imposes a covariant structure on the data: the relative amount of any of the five isotopes can always be obtained from that of the other four. Thus, the 40Ar/39Ar method is a classic example of a 'compositional data problem'. In addition to the constant sum constraint, covariances are introduced by a host of other processes, including data acquisition, blank correction, detector calibration, mass fractionation, decay correction, interference correction, atmospheric argon correction, interpolation of the irradiation parameter, and age calculation. The myriad of correlated errors arising during the data reduction are best handled by casting the 40Ar/39Ar data reduction protocol in a matrix form. The completely revised workflow presented in this paper is implemented in a new software platform, Ar-Ar_Redux, which takes raw mass spectrometer data as input and generates accurate 40Ar/39Ar ages and their (co-)variances as output. Ar-Ar_Redux accounts for all sources of analytical uncertainty, including those associated with decay constants and the air ratio. Knowing the covariance matrix of the ages removes the need to consider 'internal' and 'external' uncertainties separately when calculating (weighted) mean ages. Ar-Ar_Redux is built on the same principles as its sibling program in the U-Pb community (U-Pb_Redux), thus improving the intercomparability of the two methods with tangible benefits to the accuracy of the geologic time scale. The program can be downloaded free of charge from

  18. 40Ar/39Ar ages of lunar impact glasses: Relationships among Ar diffusivity, chemical composition, shape, and size

    CERN Document Server

    Zellner, N E B

    2015-01-01

    Lunar impact glasses, quenched melts produced during cratering events on the Moon, have the potential to provide not only compositional information about both the local and regional geology of the Moon but also information about the impact flux over time. We present in this paper the results of 73 new 40Ar/39Ar analyses of well-characterized, inclusion-free lunar impact glasses and demonstrate that size, shape, chemical composition, fraction of radiogenic 40Ar retained, and cosmic ray exposure (CRE) ages are important for 40Ar/39Ar investigations of these samples. Specifically, analyses of lunar impact glasses from the Apollo 14, 16, and 17 landing sites indicate that retention of radiogenic 40Ar is a strong function of post-formation thermal history in the lunar regolith, size, and chemical composition. Based on the relationships presented in this paper, lunar impact glasses with compositions and sizes sufficient to have retained 90% of their radiogenic Ar during 750 Ma of cosmic ray exposure at time-integra...

  19. Spatial evaluation of Ar-systematics in rocks from the British Channel Islands: a UV laserprobe Ar/Ar study of excess 40Ar

    Science.gov (United States)

    Schwenzer, S. P.; Sherlock, S.; Kelley, S. P.

    2010-12-01

    The Ar-Ar method is a powerful tool for constraining thermal histories of metamorphic and plutonic rocks, most commonly undertaken on potassium rich mineral separates rather than whole rocks. While this approach usually yields reasonable thermal histories, it is rarely as precise as dating volcanics, and such rocks are also frequently contaminated by excess argon, artificially elevating the Ar-Ar ages. Understanding the evolution of excess argon represents a challenge; whilst it is possible to discern the ‘sink’ as the host mineral now contaminated by excess argon, examining the ‘source’ and ‘transport’ mechanism is more challenging. The approach we have taken here is to combine measurements of potassium rich and potassium poor minerals to understand the argon reservoirs and argon transfer between minerals, grain boundaries and fluids. Considering the system as a whole provides a method for understanding the complete history of the rock and thus assessing any interactions which may impact on the interpretation of ages and thermal history [Kelley, 2002, Chem. Geol. 188]. Here we have studied a series of plutonic and metamorphic basement samples from the British Channel Islands with different ages and post-emplacement histories, namely Icart Gneiss, Perelle Quartz Diorite, L’Ancresse Granodiorite, and Bordeaux Diorite. The formation age of Icart Gneiss is ~2000 Ma [D’Lemos et al., 1990, Geol. Soc. Spec. Pub. 51]. Ar-Ar ages of hornblendes and biotites from quartz diorites on Guernsey and Sark range between 606 and 596 Ma [Dallmeyer et al. 1991, J. Geol. Soc. London 148], whilst U-Pb zircon ages are in the range 710 to 613 Ma [Dallmeyer et al. 1991; Samson & D’Lemos 1998, J. Geol. Soc. London 155; Miller et al. 1999, Tectonophysics 132]. Detailed petrograpic (microscope, electron microprobe) investigations established the crystallization and deformation history of the samples, and revealed that post-magmatic alteration is unevenly distributed. This

  20. 40Ar/39Ar Ages of Carbonaceous Xenoliths in 2 HED Meteorites

    Science.gov (United States)

    Turrin, B.; Lindsay, F. N.; Park, J.; Herzog, G. F.; Delaney, J. S.; Swisher, C. C., III; Johnson, J.; Zolensky, M.

    2016-01-01

    The generally young K/Ar and 40Ar/39Ar ages of CM chondrites made us wonder whether carbonaceous xenoliths (CMX) entombed in Howardite–Eucrite–Diogenite (HED) meteorites might retain more radiogenic 40Ar than do ‘free-range’ CM-chondrites. To find out, we selected two HED breccias with carbonaceous inclusions in order to compare the 40Ar/39Ar release patterns and ages of the inclusions with those of nearby HED material. Carbonaceous inclusions (CMXs) in two HED meteorites lost a greater fraction of radiogenic 40Ar than did surrounding host material, but a smaller fraction of it than did free-range CM-chondrites such as Murchison or more heavily altered ones. Importantly, however, the siting of the CMXs in HED matrix did not prevent the 40Ar loss of about 40 percent of the radiogenic 40Ar, even from phases that degas at high laboratory temperatures. We infer that carbonaceous asteroids with perihelia of 1 astronomical unit probably experience losses of at least this size. The usefulness of 40Ar/39Ar dating for samples returned from C-type asteroids may hinge, therefore, on identifying and analyzing separately small quantities of the most retentive phases of carbonaceous chondrites.

  1. SRAO: the first southern robotic AO system

    Science.gov (United States)

    Law, Nicholas M.; Ziegler, Carl; Tokovinin, Andrei

    2016-08-01

    We present plans for SRAO, the first Southern Robotic AO system. SRAO will use AO-assisted speckle imaging and Robo-AO-heritage high efficiency observing to confirm and characterize thousands of planet candidates produced by major new transit surveys like TESS, and is the first AO system to be capable of building a comprehensive several-thousand-target multiplicity survey at sub-AU scales across the main sequence. We will also describe results from Robo-AO, the first robotic LGS-AO system. Robo-AO has observed tens of thousands of Northern targets, often using a similar speckle or Lucky-Imaging assisted mode. SRAO will be a moderate-order natural-guide-star adaptive optics system which uses an innovative photoncounting wavefront sensor and EMCCD speckle-imaging camera to guide on faint stars with the 4.1m SOAR telescope. The system will produce diffraction-limited imaging in the NIR on targets as faint as mν = 16. In AO-assisted speckle imaging mode the system will attain the 30-mas visible diffraction limit on targets at least as faint as mν = 17. The system will be the first Southern hemisphere robotic adaptive optics system, with overheads an order of magnitude smaller than comparable systems. Using Robo-AO's proven robotic AO software, SRAO will be capable of observing overheads on sub-minute scales, allowing the observation of at least 200 targets per night. SRAO will attain three times the angular resolution of the Palomar Robo-AO system in the visible.

  2. Ars Baltica-verkoston puheenjohtajuus Suomeen Risto Ruohoselle

    Index Scriptorium Estoniae

    1999-01-01

    1990. a. loodud võrgustiku Ars Baltica sekretariaat (Ars Baltica Contact Point & Communication Center) tuleb Kielist Tallinnasse Eesti kultuuriministeeriumi kuni aastani 2002 (Suur-Karja 23). Ars Baltica (ühendus)

  3. Construção de um catálogo de aglomerados abertos para estudo da dinâmica da estrutura espiral da Galáxia

    Science.gov (United States)

    Carlos, I. M.; Lépine, J. R. D.

    2003-08-01

    Os aglomerados abertos são objetos de grande valor para o estudo da dinâmica da Galáxia devido esses objetos terem uma faixa de idade relativamente ampla. O trabalho visa estudar a dinâmica da estrutura espiral da Galáxia principalmente através do uso desses aglomerados, uma vez que o estudo da cinemática desses objetos é fundamental para esse objetivo. Nosso grupo trabalha no sentido de construir uma base de dados de aglomerados abertos contendo coordenadas, distância, idade, movimentos próprios e velocidades radiais e já disponibiliza uma nova versão do catálogo de aglomerados abertos o qual é uma compilação de edições anteriores, principalmente Lynga (1987), Mermilliod (1995) e ESO-B (Lauberts 1982). Nossa amostra possui cerca de 1630 aglomerados, mas nem todos os parâmetros acima citados foram determinados em sua totalidade. Para determinarmos esses parâmetros, derivamos as cores intrínsecas das estrelas membro de cada aglomerado a partir de seus tipos espectrais (busca feita no SIMBAD) obtendo assim o excesso de cor individual. A distribuição dos excessos de cor foi então utilizada para derivarmos o avermelhamento médio para cada aglomerado. De maneira similar, os tipos espectrais foram usados para estimar as magnitudes absolutas, e com as magnitudes absolutas e aparentes determinamos a respectiva distribuição do módulo de distância e finalmente a distância. Para determinar as idades foram confeccionados os diagramas cor-magnitude das estrelas de cada aglomerado onde foram superpostas a Seqüência Principal de Idade Zero (ZAMS). Superpomos a ZAMS de Schmidt-Kaler e isócronas de composição solar. Essas isócronas foram usadas para determinação das idades dos aglomerados. Uma vez que não temos ainda resultados finais, apresentamos então alguns diagramas cor-magnitude os quais foram usados para determinação, principalmente, da distância e idade dos aglomerados.

  4. ARS 01 Helsingi Kiasmas / Tarmo Virki

    Index Scriptorium Estoniae

    Virki, Tarmo

    2001-01-01

    Helsingis Kiasmas avatud rahvusvahelisest kunstinäitusest ARS 01 alapealkirjaga "Avanevaid perspektiive", kus esines oma töödega ka Marko Mäetamm. Näituse raames toimuvast Santiago Sierra kunstiprojektist kodututega

  5. "Ars Ornata" Mediterrania / Kadri Mälk

    Index Scriptorium Estoniae

    Mälk, Kadri, 1958-

    1999-01-01

    VI rahvusvaheline ehtekunstinäitus "Ars Ornata" juuni lõpus Barcelonas. Konverentsist, peanäitusest (osalejad Eestist), ehtekunstiõpetust andvast kõrgkoolist Escola Massana'st Barcelonas, õppejõude. Eesti ehtekunsti tulevikust.

  6. Differential AR algorithm for packet delay prediction

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Different delay prediction algorithms have been applied in multimedia communication, among which linear prediction is attractive because of its low complexity. AR (auto regressive) algorithm is a traditional one with low computation cost, while NLMS (normalize least mean square) algorithm is more precise. In this paper, referring to ARIMA (auto regression integrated with moving averages) model, a differential AR algorithm (DIAR) is proposed based on the analyses of both AR and NLMS algorithms. The prediction precision of the new algorithm is about 5-10 db higher than that of the AR algorithm without increasing the computation complexity.Compared with NLMS algorithm, its precision slightly improves by 0.1 db on average, but the algorithm complexity reduces more than 90%. Our simulation and tests also demonstrate that this method improves the performance of the average end-to-end delay and packet loss ratio significantly.

  7. Ars ornata / Kadri Mälk

    Index Scriptorium Estoniae

    Mälk, Kadri, 1958-

    1998-01-01

    V rahvusvaheline ehtekunsti konverents 'Ars ornata Europeana' juuni lõpus Stockholmis. New Yorgis elava kuraatori Charon Kranseni ja prantsuse ehtekunstniku Christophe Burger' juhitud vestlusringidest. 1997. a. Pariisis loodud International Craft Design Association'ist (ICDA).

  8. MagAO: status and science

    Science.gov (United States)

    Morzinski, Katie M.; Close, Laird M.; Males, Jared R.; Hinz, Phil M.; Esposito, Simone; Riccardi, Armando; Briguglio, Runa; Follette, Katherine B.; Pinna, Enrico; Puglisi, Alfio; Vezilj, Jennifer; Xompero, Marco; Wu, Ya-Lin

    2016-07-01

    "MagAO" is the adaptive optics instrument at the Magellan Clay telescope at Las Campanas Observatory, Chile. MagAO has a 585-actuator adaptive secondary mirror and 1000-Hz pyramid wavefront sensor, operating on natural guide stars from R-magnitudes of -1 to 15. MagAO has been in on-sky operation for 166 nights since installation in 2012. MagAO's unique capabilities are simultaneous imaging in the visible and infrared with VisAO and Clio, excellent performance at an excellent site, and a lean operations model. Science results from MagAO include the first ground-based CCD image of an exoplanet, demonstration of the first accreting protoplanets, discovery of a new wide-orbit exoplanet, and the first empirical bolometric luminosity of an exoplanet. We describe the status, report the AO performance, and summarize the science results. New developments reported here include color corrections on red guide stars for the wavefront sensor; a new field stop stage to facilitate VisAO imaging of extended sources; and eyepiece observing at the visible-light diffraction limit of a 6.5-m telescope. We also discuss a recent hose failure that led to a glycol coolant leak, and the recovery of the adaptive secondary mirror (ASM) after this recent (Feb. 2016) incident.

  9. MagAO: Status and Science

    CERN Document Server

    Morzinski, Katie M; Males, Jared R; Hinz, Phil M; Esposito, Simone; Riccardi, Armando; Briguglio, Runa; Follette, Katherine B; Pinna, Enrico; Puglisi, Alfio; Vezilj, Jennifer; Xompero, Marco; Wu, Ya-Lin

    2016-01-01

    "MagAO" is the adaptive optics instrument at the Magellan Clay telescope at Las Campanas Observatory, Chile. MagAO has a 585-actuator adaptive secondary mirror and 1000-Hz pyramid wavefront sensor, operating on natural guide stars from $R$-magnitudes of -1 to 15. MagAO has been in on-sky operation for 166 nights since installation in 2012. MagAO's unique capabilities are simultaneous imaging in the visible and infrared with VisAO and Clio, excellent performance at an excellent site, and a lean operations model. Science results from MagAO include the first ground-based CCD image of an exoplanet, demonstration of the first accreting protoplanets, discovery of a new wide-orbit exoplanet, and the first empirical bolometric luminosity of an exoplanet. We describe the status, report the AO performance, and summarize the science results. New developments reported here include color corrections on red guide stars for the wavefront sensor, a new field stop stage to facilitate VisAO imaging of extended sources; and eye...

  10. Medindo associação implícita com o freeIAT em Português: um exemplo com atitudes implícitas frente ao poliamor

    Directory of Open Access Journals (Sweden)

    Valdiney V. Gouveia

    2014-12-01

    Full Text Available O Teste de Associação Implícita (TAI tem se mostrado relevante na medição de diversos construtos psicológicos. Entretanto, são escassos os estudos que o consideram no Brasil. Este artigo objetivou introduzir um programa gratuito (FreeIAT para sua realização, exemplificando com uma medida de atitudes frente ao poliamor. Participaram da pesquisa 50 estudantes universitários com idade média de 22 anos (62% mulheres, que responderam a uma escala de atitudes explícitas frente ao poliamor e ao TAI Monogamia-Poliamor. Os resultados mostraram correlação negativa entre a medida implícita (bloco de latência incongruente e a explícita de atitudes frente ao poliamor, indicando que quanto maior a aceitação do poliamor, menor o tempo de associação entre os estímulos (palavras positivas e poliamor. Não se observou correlação entre o Escore D e as atitudes explícitas frente ao poliamor, sugerindo que pessoas favoráveis ao poliamor não necessariamente são contrárias à monogamia. Concluiu-se que o FreeIAT possui uma interface simplificada, atendendo às variações do TAI clássico e permitindo aplicação coletiva. Além disso, o fato de ser um programa com código aberto e gratuito tem o potencial de incentivar pesquisas com medidas implícitas em culturas lusófonas.

  11. A EDUCAÇÃO DE ADULTOS E O PROGRAMA DE COMBATE AO ANALFABETISMO EM PRESIDENTE PRUDENTE

    OpenAIRE

    2009-01-01

    Neste artigo, após traçar breve quadro do histórico e da situação atual da Educação de Adultos no País, descrevemos o programa "Combate ao Analfabetismo" desenvolvido pela Prefeitura Municipal de Presidente Prudente, cuja direção pedagógica esta a cargo da FCT/UNESP - Campus de Presidente Prudente. Apontamos os principais problemas didático-pedagógicos e administrativos colocados ao programa e as soluções que foram encontradas.

  12. A EDUCAÇÃO DE ADULTOS E O PROGRAMA DE COMBATE AO ANALFABETISMO EM PRESIDENTE PRUDENTE

    Directory of Open Access Journals (Sweden)

    Cristiano A. G. Di Giorgi

    2009-12-01

    Full Text Available Neste artigo, após traçar breve quadro do histórico e da situação atual da Educação de Adultos no País, descrevemos o programa "Combate ao Analfabetismo" desenvolvido pela Prefeitura Municipal de Presidente Prudente, cuja direção pedagógica esta a cargo da FCT/UNESP - Campus de Presidente Prudente. Apontamos os principais problemas didático-pedagógicos e administrativos colocados ao programa e as soluções que foram encontradas.

  13. Necessidades de qualificação da equipe de enfermagem para a assistência aos clientes portadores do HIV e da Aids Qualification needs of the nursing team for the assistance of Clients with HIV and Aids

    Directory of Open Access Journals (Sweden)

    Anna Luiza de Fátima Pinho Lins Gryschek

    2000-09-01

    Full Text Available Discorre-se sobre as necessidades de qualificação específica das equipes de enfermagem dos Centros de Referência de Doenças Sexualmente Transmissíveis e Aids da Secretaria Municipal da Saúde de São Paulo, para a assistência aos clientes portadores do HIV e da Aids. Foram enviados questionários abertos, para todos os profissionais da equipe de enfermagem de todas as unidades do Programa Municipal de DST/Aids. Do total de 671 profissionais de enfermagem, 453 responderam ao questionário. Como necessidades de qualificação foram apontadas: biossegurança, preparo e administração de medicamentos específicos e assistência de enfermagem aos clientes com HIV e Aids.This study discourses about the especific training needs of the nursing teams of the Centers of Reference of Sexual Transmissible Diseases (STD and Aids from the STD/Aids Program of the Health Secretary of the Township of São Paulo for the assistance of clients with HIV and Aids. From a total of 671 nursing workers, 453 answered the questionnaire. They identified the following training needs: contents related to standard precautions, preparation and administration of specific drugs and other general nursing care to HIV + clients.

  14. O museu aberto e comunicativo : fundamentação e proposta para estudos de públicos à luz de um enfoque info-comunicacional

    OpenAIRE

    Beites, Alexandre Manuel Rodrigues

    2011-01-01

    Os estudos de públicos aplicados ao universo museológico sofreram uma evolução que transitou sem grande efectividade ate um momento - o actual, em que lhes são exigidos resultados uteis. Vive-se uma "encruzilhada" metodológica para a qual esta dissertação pretende contribuir com uma proposta. Apostar no registo e tratamento dos dados info-comunicacionais do visitante como matéria-prima será o ponto de partida para uma estratégia, que se quer qualitativa, integradora de varias disciplinas e co...

  15. Direito e Risco: do Consumo ao Ambiente

    OpenAIRE

    Marques, Carlos Alexandre Michaello

    2014-01-01

    A presente Dissertação tem como tema de investigação “Direito e Risco: do Consumo ao Ambiente”. Para tanto, essa temática foi delimitada através da investigação sobre a capacidade do Direito a partir de uma leitura Sociológica e Antropológica de compreender e promover aprendizagem nas questões que envolvem o Risco como elemento decorrente do Consumo e que externa suas consequências ao Ambiente. Neste sentido, se direcionou a responder ao problema de saber: em que medida é possível e necessári...

  16. ArsP: a methylarsenite efflux permease.

    Science.gov (United States)

    Chen, Jian; Madegowda, Mahendra; Bhattacharjee, Hiranmoy; Rosen, Barry P

    2015-11-01

    Trivalent organoarsenic compounds are far more toxic than either pentavalent organoarsenicals or inorganic arsenite. Many microbes methylate inorganic arsenite (As(III)) to more toxic and carcinogenic methylarsenite (MAs(III)). Additionally, monosodium methylarsenate (MSMA or MAs(V)) has been used widely as an herbicide and is reduced by microbial communities to MAs(III). Roxarsone (3-nitro-4-hydroxybenzenearsonic acid) is a pentavalent aromatic arsenical that is used as antimicrobial growth promoter for poultry and swine, and its active form is the trivalent species Rox(III). A bacterial permease, ArsP, from Campylobacter jejuni, was recently shown to confer resistance to roxarsone. In this study, C. jejuni arsP was expressed in Escherichia coli and shown to confer resistance to MAs(III) and Rox(III) but not to inorganic As(III) or pentavalent organoarsenicals. Cells of E. coli expressing arsP did not accumulate trivalent organoarsenicals. Everted membrane vesicles from those cells accumulated MAs(III) > Rox(III) with energy supplied by NADH oxidation, reflecting efflux from cells. The vesicles did not transport As(III), MAs(V) or pentavalent roxarsone. Mutation or modification of the two conserved cysteine residues resulted in loss of transport activity, suggesting that they play a role in ArsP function. Thus, ArsP is the first identified efflux system specific for trivalent organoarsenicals.

  17. ArDroneXT - Ar.Drone 2 eXTension for swarming and service hosting

    OpenAIRE

    Autefage, Vincent; Chaumette, Serge

    2013-01-01

    This is an Operating System Setup Guide.; This report explains how to upgrade an Ar.Drone 2 for swarming and services hosting. In other words, it gives the technical information required to easily create a swarm of Ar.Drone 2 sharing a Wi-Fi network. Moreover, it describes the process to install new services and applications on the drone.

  18. A Refined Astronomically Calibrated 40Ar/39Ar Age for Fish Canyon Sanidine

    DEFF Research Database (Denmark)

    Rivera, Tiffany; Storey, Michael; Zeeden, Christian

    2011-01-01

    Intercalibration between the astronomical and radio-isotopic dating methods provides a means to improving accuracy and reducing uncertainty of an integrated, multi-chronometer geologic timescale. Here we report a high-precision 40Ar/39Ar age for the Fish Canyon sanidine (FCs) neutron fluence...

  19. A refined astronomically calibrated 40Ar/39Ar age for Fish Canyon sanidine

    NARCIS (Netherlands)

    Rivera, T.A.; Storey, M.; Zeeden, C.; Hilgen, F.J.; Kuiper, K.

    2011-01-01

    Intercalibration between the astronomical and radio-isotopic dating methods provides a means to improving accuracy and reducing uncertainty of an integrated, multi-chronometer geologic timescale. Here we report a high-precision 40Ar/39Ar age for the FishCanyon sanidine (FCs) neutron fluence monitor,

  20. Produção e resistência ao pendoamento de alfaces tipo lisa cultivadas sob diferentes ambientes Production and resistance to bolting of loose-leaf lettuce grown in different environments

    Directory of Open Access Journals (Sweden)

    Marla Silvia Diamante

    2013-03-01

    Full Text Available Com o objetivo de indicar qual ambiente, telado ou campo aberto, fornece melhores condições para a produção e maior resistência ao pendoamento de diferentes cultivares de alface lisa, para as condições climáticas de Cáceres-MT, desenvolveu-se esse trabalho no período de fevereiro a abril de 2011. Foram avaliados vinte tratamentos, empregando o delineamento experimental em blocos casualizados em esquema fatorial 5 x 4, sendo cinco ambientes de cultivo (telas de sombreamento 30 e 50%, telas termo-refletoras 30 e 50% e campo aberto e quatro cultivares de alface tipo lisa (Elisa, Elizabeth, Regiane e Regina, com quatro repetições. A colheita foi realizada aos 30 dias após o transplante. As cultivares de alface lisa mais produtivas foram Regiane, que obteve maior número de folhas e Regina com menor comprimento de caule. Os ambientes de cultivo que aumentaram a resistência ao pendoamento da alface foram as tela de sombreamento e termorefletora 50%. As cultivares não apresentaram diferenças significativas entre si quanto à resistência ao pendoamento.This work was developed during the period of February to April, 2011, with the objective of indicating which environment, greenhouse or open field, provides better conditions for production, and greater resistance to bolting of different cultivars of loose-leaf lettuce, for the climatic conditions of Cáceres, Mato Grosso, Brazil, Twenty treatments were evaluated, using a randomized block experimental design in a 5 x 4 factorial of five environmental conditions (shading screens of 30 and 50%, heat-reflective screens of 30 and 50%, and open field and four cultivars of loose-leaf lettuce (Elisa, Elizabeth, Regiane and Regina, with four replications. Harvesting was carried out 30 days after transplanting. The most productive lettuce cultivars were Regiane, which obtained the greatest number of leaves, and Regina with the smallest stem length. The environmental conditions that increased

  1. Modeling Augmented Reality User Interfaces with SSIML/AR

    Directory of Open Access Journals (Sweden)

    Arnd Vitzthum

    2006-06-01

    Full Text Available Augmented Reality (AR technologies open up new possibilities especially for task-focused domains such as assembly and maintenance. However, it can be noticed that there is still a lack of concepts and tools for a structured AR development process and an application specification above the code level. To address this problem we introduce SSIML/AR, a visual modeling language for the abstract specification of AR applications in general and AR user interfaces in particular. With SSIML/AR, three different aspects of AR user interfaces can be described: The user interface structure, the presentation of relevant information depending on the user’s current task and the integration of the user interface with other system components. Code skeletons can be generated automatically from SSIML/AR models. This enables the seamless transition from the design level to the implementation level. In addition, we sketch how SSIML/AR models can be integrated in an overall AR development process.

  2. Transdutores eletromecânicos de eletretos poliméricos com bolha de ar termoformada

    OpenAIRE

    Claudio Vara de Aquino

    2007-01-01

    A sensibilidade eletromecânica dos transdutores de eletretos poliméricos resulta em muitas aplicações na engenharia, que motivaram a produção industrial de um filme não homogêneo e eletricamente carregado, denominado filme eletromecânico ou EMFi (ElectroMechanical Film). Um dispositivo alternativo a este EMFi, produzido em nosso laboratório, foi o resultado de uma bolha de ar homogênea termoformada, unida por dois filmes de teflon FEP. Este dispositivo possui uma estrutura similar ao EMFi, ma...

  3. AR-扩增实境

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    1、什么是AR-扩增实境?AR-扩增实境(Augmented Reality,简称AR),简单地说,就是把虚拟的物体和现实的场景进行嫁接。这是一种实时地计算摄影机影像的位置及角度并加上相应图像的技术,这种技术的目标是在屏幕上把虚拟世界套在现实世界并进行互动。

  4. 40Ar/39Ar and K/Ar dating of low grade metamorphism: examples on metabasites from Central Chile

    Science.gov (United States)

    Aguirre, L.; Feraud, G.; Fuentes, F.; Delbar, M.; Morata, D.

    2003-04-01

    Dating low to very low-grade burial metamorphic assemblages is often difficult because of (1) few mineral phases compositionally suitable to apply the 40Ar/39Ar and K-Ar methods, and (2) small amount in which these phases are commonly found. K-feldspar adularia, sericitic mica, and celadonite are the best known K-bearing secondary minerals. We present some successful attempts to analyse two distinct secondary phases from a same volcanic formation that allow to test the validity of the measured ages. These ages have been also compared with the crystallisation age of the volcanic rocks in which the secondary phases were lately developed. Adularia and sericite were selected from basic lava flows from a 3 to 13 km thick Cretaceous sequence from the Coastal Range of central Chile, at two different locations: the Bustamante Hill (west from Santiago), and the Cordón de Chacana, c. 80 km further north. Adularia came from a low-variance assemblage with pumpellyite, chlorite and low-albite contained in amygdules whereas sericite was present in milky-white strongly sericitized plagioclase crystals. While small clusters of rare fresh plagioclase grains from lava flows from Bustamante and Chacana displayed concordant plateau ages 119.4 ± 2.4 (2 sigma) and 118.7 ± 0.6 Ma, respectively, the adularia from the same formations gave sensibly younger ages around 94 Ma (high temperature steps), and 96.8 ± 0.2 Ma (plateau age) in Bustamante and Chacana, respectively. Sericite ages were measured in situ into single crystals of strongly transformed plagioclases. The relative proportion of sericite and plagioclase corresponding to each degasing step was monitored by measuring the Ca/K ratio (deduced from 37ArCa/39Ar_K). While intermediate ages were measured on some sericite of both sites (corresponding to a variable but permanent contribution of plagioclase on each step), a plateau age of 97.0 ± 1.6 Ma (concordant with adularia) could be obtained on a strongly sericitized plagioclase

  5. Craving decrease with topiramate in outpatient treatment for cocaine dependence: an open label trial Diminuição da fissura com topiramato no tratamento ambulatorial para dependência de cocaína: um ensaio clínico aberto

    Directory of Open Access Journals (Sweden)

    Alessandra Diehl Reis

    2008-06-01

    Full Text Available OBJECTIVE: To evaluate anticraving action and tolerability of topiramate in cocaine user treatment. METHOD: Male users of inhaled cocaine which met criteria for cocaine dependence (Diagnostic and Statistical Manual of Mental Disorders, fourth edition were selected for outpatient 12-week, open label trial with topiramate; individual dosage ranged between 25-300 mg/day. Main clinical variables were abstinence rate, craving intensity, frequency and duration, adherence, dropouts, side effects and impulsivity measure through Barratt Impulsivity Scale. Patients received assertive strategic counseling for abstinence assistance and medication monitoring evaluation every two weeks. Comparative analysis was made with intention to treat, missing values were replaced (last observation carried forward, and significance level was 5%. RESULTS: Adherence to treatment was 57% (at least three evaluations, 32% dropped out (one evaluation. There were no severe side effects. Negative test average was 25.4% (31.2. Significant reduction in craving intensity and duration was observed in 25% of the sample. No statistical significant reduction in craving frequency was observed in 7.1%. Increase in frequency was observed in 10.7% and 82.1% did not present any variation. No significant statistical variations in Barratt Impulsivity Scale or in the total score were found in the final evaluation when compared to baseline. CONCLUSION: More randomized placebo-controlled trials with topiramate for cocaine dependants should be performed to evaluate preliminary evidence.OBJETIVO: Avaliar a ação anticraving e tolerabilidade do topiramato em usuários de cocaína. MÉTODO: Homens usuários de cocaína inalada que preenchiam critérios para dependência de cocaína (Manual Diagnóstico e Estatístico de Desordens Mentais, quarta edição foram selecionados para 12 semanas de tratamento ambulatorial, em ensaio clínico aberto com topiramato; dosagens escalonadas entre 25-300 mg

  6. Modification of stearic acid in Ar and Ar-O{sub 2} pulsed DC discharges

    Energy Technology Data Exchange (ETDEWEB)

    Bernardelli, E.A.; Souza, T.; Maliska, A.M.; Kleinjohann, K.J.; Bendo, T. [Federal University of Santa Catarina (UFSC), Florianopolis, SC (Brazil); Mafra, M. [Nancy-Universite (France). Institut Jean Lamour; CNRS, Nancy (France); Belmonte, T. [Federal University of Technology from Parana (UTFPR), Curitiba, PR (Brazil)

    2010-07-01

    Stearic acid (C{sub 1}8H{sub 36}O{sub 2}) was treated into Ar and Ar-O{sub 2}(10%) pulsed DC discharge created by a cathode-anode confined system. The samples were placed at the floating potential. The results show that the mass variation of the stearic acid samples after Ar-O{sub 2} plasma exposure is more important than the pure Ar plasma treatments. This comportment demonstrate that the oxygen actives species (O and O{sub 2} in all states) strongly enhance the etching process with regards to A{sup *} species, regardless of their concentration. After treatment by Ar and Ar-O{sub 2} plasma, analyses by X-ray diffraction show a significant structural modification of the samples surface, utilizing Ar-O{sub 2} plasma the modification was more pronounced. The chemical composition evolution shows that the acid function is etched preferentially in the beginning of the treatment (about 5 min) and that after 10 min the carbonic chains seems to be functionalized by oxygen. (author)

  7. Moving Beyond the Androgen Receptor (AR): Targeting AR-Interacting Proteins to Treat Prostate Cancer.

    Science.gov (United States)

    Foley, Christopher; Mitsiades, Nicholas

    2016-04-01

    Medical or surgical castration serves as the backbone of systemic therapy for advanced and metastatic prostate cancer, taking advantage of the importance of androgen signaling in this disease. Unfortunately, resistance to castration emerges almost universally. Despite the development and approval of new and more potent androgen synthesis inhibitors and androgen receptor (AR) antagonists, prostate cancers continue to develop resistance to these therapeutics, while often maintaining their dependence on the AR signaling axis. This highlights the need for innovative therapeutic approaches that aim to continue disrupting AR downstream signaling but are orthogonal to directly targeting the AR itself. In this review, we discuss the preclinical research that has been done, as well as clinical trials for prostate cancer, on inhibiting several important families of AR-interacting proteins, including chaperones (such as heat shock protein 90 (HSP90) and FKBP52), pioneer factors (including forkhead box protein A1 (FOXA1) and GATA-2), and AR transcriptional coregulators such as the p160 steroid receptor coactivators (SRCs) SRC-1, SRC-2, SRC-3, as well as lysine deacetylases (KDACs) and lysine acetyltransferases (KATs). Researching the effect of-and developing new therapeutic agents that target-the AR signaling axis is critical to advancing our understanding of prostate cancer biology, to continue to improve treatments for prostate cancer and for overcoming castration resistance.

  8. Ar-Ar Impact Heating Ages of Eucrites and Timing of the LHB

    Science.gov (United States)

    Bogard, Donald; Garrison, Daniel

    2009-01-01

    Eucrites and howardites, more than most meteorite types, show extensive impact resetting of their Ar-39-Ar-40 (K-Ar) ages approximately equal to 3.4-4.1 Ga ago, and many specimens show some disturbance of other radiometry chronometers as well. Bogard (1995) argued that this age resetting occurred on Vesta and was produced by the same general population of objects that produced many of the lunar impact basins. The exact nature of the lunar late heavy bombardment (LHB or 'cataclysm') remains controversial, but the timing is similar to the reset ages of eucrites. Neither the beginning nor ending time of the lunar LHB is well constrained. Comparison of Ar-Ar ages of brecciated eucrites with data for the lunar LHB can resolve both the origin of these impactors and the time period over which they were delivered to the inner solar system. This abstract reports some new Ar-Ar age data for eucrites, obtained since the authors' 1995 and 2003 papers.

  9. Ar-40/Ar-39 Ages of Maskelynite Grains from ALHA 77005

    Science.gov (United States)

    Turrin, B.; Park, J.; Herzog, G. F.; Lindsay, F. N.; Delaney, J. S.; Nyquist, L. E.; Swisher, C., III

    2013-01-01

    We present Ar-40/Ar-39 measurements for twelve small (20-60 micro-g) maskelynite samples from the heavily shocked martian meteorite ALHA 77005. The reported modal composition for ALHA 77005 is 50-60% olivine (Fa28), 30-40% pyroxene (Wo5Fs23En72), approx.8% maskelynite (An53), and approx.2% opaques by volume [1]). The meteorite is usually classified as a lherzolite. Previous Studies - Ar-40/Ar-39 results from previous work display disturbed release spectra [2,3]. In study [2], Ar-40/Ar-39 measurements on a 52-mg whole-rock sample produced an extremely disturbed release spec-trum, with all calculated apparent ages > 1 Ga, (Fig. 1). In a subsequent study [3], a light and a dark phase were analyzed. A 2.3-mg sample of the light, relatively low-K phase produced a disturbed release spectrum. For the first 20% of the Ar-39(sub K), most of the apparent ages exceeded >1 Ga; the remaining 80% yielded ages between 0.3-0.5 Ga. The integrated age for this phase is 0.9 Ga.

  10. Avaliação da sensibilidade da goiabeira 'Pedro Sato' ao ozônio

    Directory of Open Access Journals (Sweden)

    Regina Maria de Moraes

    2011-09-01

    Full Text Available O objetivo deste trabalho foi avaliar a sensibilidade da goiabeira 'Pedro Sato' ao ozônio (O3, em comparação à cultivar Paluma, descrita como sensível. Oito plantas de cada cultivar foram submetidas separadamente a ar filtrado e a ar filtrado + O3, cinco horas por dia, durante quatro dias. Foram avaliadas fotossíntese (Asat, injúrias foliares visíveis e concentração de antocianinas e taninos. Plantas das duas cultivares também foram expostas, durante três meses, a condições ambientais em local contaminado por O3, tendo-se avaliado fotossíntese, injúrias foliares e crescimento. Plantas fumigadas com O3 apresentaram redução de Asat e da atividade fotoquímica, além de manifestação de injúrias foliares. 'Paluma' apresentou maior redução de Asat, injúrias foliares mais severas e redução de taninos. Quando exposta ao ambiente contaminado, 'Paluma' apresentou trocas gasosas mais altas, mas apresentou redução de Asat 30 dias antes que 'Pedro Sato'. O crescimento não foi afetado em 'Pedro Sato', cujas injúrias foliares tiveram menor incidência, severidade e precocidade do que em 'Paluma'. A menor taxa de crescimento de 'Paluma' indica maior sensibilidade ao O3. Apesar de responder com menor intensidade ao estresse induzido pelo O3, a cultivar Pedro Sato não pode ser considerada tolerante, pois apresenta danos fotoquímicos, injúrias foliares e alterações nos conteúdos de metabólitos secundários quando exposta a esse poluente.

  11. Alergia ao látex

    Directory of Open Access Journals (Sweden)

    Allarcon Jorge Barrios

    2003-01-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: O látex, (cis 1,4 polyisoprene está muito presente no dia-a-dia do anestesiologista. Os primeiros relatos de alergia ao látex datam de 1933. A sensibilidade ao látex na população de anestesiologistas é de 12,5% a 15,8%. A incidência de sensibilidade ao látex aumenta muito em grupos específicos, podendo produzir reações graves e até mesmo fatais. O objetivo desse estudo foi realizar uma revisão bibliográfica sobre o assunto, abordando este tema de interesse para o anestesiologista, considerando diagnóstico, prevenção e tratamento da alergia ao látex. CONTEÚDO: Os estudos sobre a prevalência das reações alérgicas ao látex variam muito conforme a população estudada e os métodos utilizados para estabelecer a sensibilidade ao antígeno. Mesmo com estas variações, existem alguns grupos em que o risco é elevado, particularmente em pacientes com distúrbio na formação do tubo neural. As manifestações clínicas variam desde dermatite de contato até anafilaxia e óbito. O diagnóstico precoce com pesquisa de IgE pode prevenir as reações de hipersensibilidade. CONCLUSÕES: É de extrema importância o diagnóstico precoce da alergia ao látex. A abordagem desses pacientes em ambientes livres de látex evitam a sensibilização e evolução muitas vezes para quadros dramáticos.

  12. Potassium Isotopic Compositions of NIST Potassium Standards and 40Ar/39Ar Mineral Standards

    Science.gov (United States)

    Morgan, Leah; Tappa, Mike; Ellam, Rob; Mark, Darren; Higgins, John; Simon, Justin I.

    2013-01-01

    Knowledge of the isotopic ratios of standards, spikes, and reference materials is fundamental to the accuracy of many geochronological methods. For example, the 238U/235U ratio relevant to U-Pb geochronology was recently re-determined [1] and shown to differ significantly from the previously accepted value employed during age determinations. These underlying values are fundamental to accurate age calculations in many isotopic systems, and uncertainty in these values can represent a significant (and often unrecognized) portion of the uncertainty budget for determined ages. The potassium isotopic composition of mineral standards, or neutron flux monitors, is a critical, but often overlooked component in the calculation of K-Ar and 40Ar/39Ar ages. It is currently assumed that all terrestrial materials have abundances indistinguishable from that of NIST SRM 985 [2]; this is apparently a reasonable assumption at the 0.25per mille level (1s) [3]. The 40Ar/39Ar method further relies on the assumption that standards and samples (including primary and secondary standards) have indistinguishable 40K/39K values. We will present data establishing the potassium isotopic compositions of NIST isotopic K SRM 985, elemental K SRM 999b, and 40Ar/39Ar biotite mineral standard GA1550 (sample MD-2). Stable isotopic compositions (41K/39K) were measured by the peak shoulder method with high resolution MC-ICP-MS (Thermo Scientific NEPTUNE Plus), using the accepted value of NIST isotopic SRM 985 [2] for fractionation [4] corrections [5]. 40K abundances were measured by TIMS (Thermo Scientific TRITON), using 41K/39K values from ICP-MS measurements (or, for SRM 985, values from [2]) for internal fractionation corrections. Collectively these data represent an important step towards a metrologically traceable calibration of 40K concentrations in primary 40Ar/39Ar mineral standards and improve uncertainties by ca. an order of magnitude in the potassium isotopic compositions of standards.

  13. "ARS 01", perspektiivide avamine / Helen Kivisoo

    Index Scriptorium Estoniae

    Kivisoo, Helen

    2001-01-01

    30. IX 2001-20. I 2002 Kiasmas kuuendat korda toimuvast rahvusvahelisest näitusest "ARS", kus Eestist osaleb Marko Mäetamm. Kuraatorid Tuula Arkio, Maaretta Jaukkuri, Patrik Nyberg, Jari-Pekka Vanhala. Teemaks "kolmas ruum". Näituse kajastamisest.

  14. User Interface Design for Military AR Applications

    Science.gov (United States)

    2010-12-12

    SI: AUGMENTED REALITY User interface design for military AR applications Mark A. Livingston • Zhuming Ai • Kevin Karsch • Gregory O. Gibson Received...several visual representations fundamental to SA. The UI M. A. Livingston (&) Z. Ai K. Karsch G. O. Gibson Naval Research Laboratory, Washington

  15. "Ars Dictaminis" and Modern Rhetorical Practice.

    Science.gov (United States)

    Sewell, Ernestine P.

    Although not all the problems of writing are solved by practice in letter writing, a review of the classical texts on "ars dictaminis"--letter writing--creates a strong argument for its increased use as an exercise in college composition classrooms. By incorporating the lessons of dictamen as a device for achieving rhetorical modes--narration,…

  16. 78 FR 9448 - Arkansas Disaster #AR-00061

    Science.gov (United States)

    2013-02-08

    ... ADMINISTRATION Arkansas Disaster AR-00061 AGENCY: U.S. Small Business Administration. ACTION: Notice SUMMARY: This is a Notice of the Presidential declaration of a major disaster for Public Assistance Only for the... Disaster Assistance, U.S. Small Business Administration, 409 3rd Street SW., Suite 6050, Washington,...

  17. Ionization of the group 3 metals La, Y and Sc in H2---O2---Ar flames

    Science.gov (United States)

    Patterson, Patricia M.; Goodings, John M.

    1995-09-01

    Four pairs of premixed, fuel-rich/fuel-lean (FR/FL; equivalence ratio [Phi] = 1.5/0.75). H2---O2---Ar flames at four temperatures in the range 1900-2425 K, all at atmospheric pressure, were doped with about 10-6 mole fraction of the group 3 metals La, Y and Sc using atomizer techniques. The metals produce solid particles in the flames and gaseous metallic species. The latter include free metallic atoms, A, near the flame reaction zone, but only the monoxide AO and the oxide-hydroxide OAOH further downstream at equilibrium; the [OAOH]/[AO] ratio varies in FR/FL flames. Metallic ions (produce AO+; further downstream, the ionization level is sustained by the thermal (collisional) ionization of AO to produce AO+ and/or the chemi-ionization of OAOH with H to produce A(OH)2+. The ions AO+, A(OH)2+ and higher hydrates are all rapidly equilibrated by three-body association reactions with water. Ions are lost by dissociative electron-ion recombination of A(OH)2+ and possibly higher hydrates. The chemical ionization of the metallic species by H3O+ was investigated by adding a small quantity of CH4 to the flames. The ion chemistry is discussed in detail. An estimate of the bond dissociation energy D0°(OLa---OH) = 408 ± 40 kJ mol-1 (4.23 ± 0.41 eV) was obtained.

  18. Theoretical prediction on vibrational spectra of [Ar…Ar-H]+

    Institute of Scientific and Technical Information of China (English)

    LI; Wei(李巍); ZHAO; Xinsheng(赵新生)

    2003-01-01

    Centrosymmetric linear [Ar-H-Ar]+ and asymmetric linear [Ar…Ar-H]+ are two stable configurations of [Ar2H]+. Based on the global potential energy surface of [Ar2H]+ provided by our group recently, we calculated the vibrational spectra of [Ar…Ar-H]+ with total angular momentum J = 0 by time-dependent quantum mechanical method, and the influence of quantum tunneling effect on vibrational spectra was found. With the help of the observation on the eigenstate functions and the modified potential energy surface, assignments were made to the spectra. The strong coupling between the excited bending mode of [Ar-H-Ar]+ and the vibrational states of [Ar…Ar-H]+ was discussed.

  19. Uma abordagem ao sentimento moral na filosofia kantiana

    Directory of Open Access Journals (Sweden)

    Cláudia Maria Fidalgo da Silva

    2014-11-01

    Full Text Available O principal objectivo do presente artigo é apresentar uma abordagem ao sentimento moral na filosofia kantiana.1 Embora Kant entenda que o ser humano não deva agir considerando o afecto Affekt e a paixão , tal não significa, como por vezes é considerado, que o autor defenda que a acção virtuosa não deva ser acompanhada por qualquer sentimento. Nesta linha, o artigo possui três etapas principais: 1 realçar o que Kant entende por afecto; 2 evidenciar a posição kantiana sobre a paixão; 3 investigar os sentimentos morais apresentados pelo autor, que surgem na “Introdução à doutrina da virtude”: 3.1 sentimento moral; 3.2 consciência moral ; 3.3 filantropia ; 3.4 respeito . Pretender-se-á apontar para o facto deles, em última análise, se resumirem a um único sentimento, o sentimento de respeito à lei.

  20. Metalloregulatory properties of the ArsD repressor.

    Science.gov (United States)

    Chen, Y; Rosen, B P

    1997-05-30

    The plasmid-encoded arsenical resistance (ars) operon of plasmid R773 produces resistance to trivalent and pentavalent salts of the metalloids arsenic and antimony in cells of Escherichia coli. The first two genes in the operon, arsR and arsD, were previously shown to encode trans-acting repressor proteins. ArsR controls the basal level of expression of the operon, while ArsD controls maximal expression. Thus, action of the two repressors form a homeostatic regulatory circuit that maintains the level of ars expression within a narrow range. In this study, we demonstrate that ArsD binds to the same site on the ars promoter element as ArsR but with 2 orders of magnitude lower affinity. The results of gel shift assays demonstrate that ArsD is released from the ars DNA promoter by phenylarsine oxide, sodium arsenite, and potassium antimonyl tartrate (in order of effectiveness), the same inducers to which ArsR responds. Using the quenching of intrinsic tryptophan fluorescence to measure the affinity of the repressor for inducers, apparent Kd values for Sb(III) and As(III) of 2 and 60 microM, respectively, were obtained. These results demonstrate that the arsR-arsD pair provide a sensitive mechanism for sensing a wide range of environmental heavy metals.

  1. Construction of a chimeric ArsA-ArsB protein for overexpression of the oxyanion-translocating ATPase.

    Science.gov (United States)

    Dou, D; Owolabi, J B; Dey, S; Rosen, B P

    1992-12-25

    Resistance to toxic oxyanions of arsenic and antimony in Escherichia coli is conferred by the conjugative R-factor R773, which encodes an ATP-driven anion extrusion pump. The ars operon is composed of three structural genes, arsA, arsB, and arsC. Although transcribed as a single unit, the three genes are differentially expressed as a result of translational differences, such that the ArsA and ArsC proteins are produced in high amounts relative to the amount of ArsB protein made. Consequently, biochemical characterization of the ArsB protein, which is an integral membrane protein containing the anion-conducting pathway, has been limited, precluding studies of the mechanism of this oxyanion pump. To overexpress the arsB gene, a series of changes were made. First, the second codon, an infrequently used leucine codon, was changed to a more frequently utilized codon. Second, a GC-rich stem-loop (delta G = -17 kcal/mol) between the third and twelfth codons was destabilized by changing several of the bases of the base-paired region. Third, the re-engineered arsB gene was fused 3' in frame to the first 1458 base pairs of the arsA gene to encode a 914-residue chimeric protein (486 residues of the ArsA protein plus 428 residues of the mutated ArsB protein) containing the entire re-engineered ArsB sequence except for the initiating methionine. The ArsA-ArsB chimera has been overexpressed at approximately 15-20% of the total membrane proteins. Cells producing the chimeric ArsA-ArsB protein with an arsA gene in trans excluded 73AsO2- from cells, demonstrating that the chimera can function as a component of the oxyanion-translocating ATPase.

  2. A indústria de publicação contra o acesso aberto La industria de publicación contra el acceso abierto The publishing industry against open access journals

    Directory of Open Access Journals (Sweden)

    Kenneth Rochel de Camargo Jr

    2012-12-01

    Full Text Available A publicação em revistas de acesso aberto cresceu expressivamente nos últimos anos. As publicações de acesso fechado, por sua vez, têm custo de acesso cada vez mais elevado, por se beneficiarem de um modelo econômico peculiar: o trabalho relevante e os insumos essenciais são entregues gratuitamente a fornecedores que contam com um mercado cativo, praticamente sem concorrência. O mercado editorial é altamente oligopolizado, característico de indústrias que trabalham com o regime de copyright. Isso contribui para a elevação dos preços de seus produtos. Políticas mandatórias de acesso aberto, como a determinada pela agência National Institutes of Health, constituem-se em ameaça a esse modelo de negócios e são enfrentadas pela indústria em várias frentes, incluindo a passagem de legislação para sabotar tais iniciativas. O objetivo deste comentário foi apresentar alguns aspectos principais desse enfrentamento e sugerir possíveis estratégias de incremento da publicação de acesso aberto em nosso meio.La publicación en revistas de acceso abierto creció expresivamente en los últimos años. Las publicaciones de acceso cerrado, por su parte, tienen costo de acceso cada vez más elevado, por beneficiarse de un modelo económico peculiar: el trabajo relevante y los insumos esenciales son entregados gratuitamente a los proveedores que cuentan con un mercado cautivo, prácticamente sin concurrencia. El mercado editorial es altamente monopolizado, característico de industrias que trabajan con el régimen de copyright. Esto contribuye a la elevación de los precios de sus productos. Políticas obligatorias de acceso abierto, como la determinada por el National Institutes of Health, constituyen amenazas a este modelo de negocios y son enfrentadas por la industria en varios ángulos, incluyendo el paso de legislación para sabotear tales iniciativas. El objetivo de este comentario fue presentar algunos aspectos principales de este

  3. Condicionamento de ar em salas de operação e controle de infecção - uma revisão

    Directory of Open Access Journals (Sweden)

    May Socorro Martinez Afonso

    2006-04-01

    Full Text Available Revisão bibliográfica, realizada junto aos bancos de dados MED LINE, LILACS, SCIELO, Ministério da Saúde e outros buscadores, com o objetivo de identificar os fatores que torna o ar condicionado fonte de contaminação ambiental. O ar é contaminado por partículas que transportam microrganismos. As fontes de partículas incluem pacientes e equipe cirúrgica. O controle da temperatura, umidade relativa, pressão, número de trocas de ar realizadas por hora, paramentação, tráfego, número de pessoas nas salas e manutenção e limpeza do sistema de ar condicionado dos centros cirúrgicos, são fatores importantes na redução do número de microrganismos no ambiente de sala de operação.

  4. Recoil ion charge state distributions in low energy Ar{sup q+} {minus} Ar collisions

    Energy Technology Data Exchange (ETDEWEB)

    Vancura, J.; Marchetti, V.; Kostroun, V.O.

    1992-12-31

    We have measured the recoil ion charge state distributions in Ar{sup q+} -- Ar (8{le}q{le}16) collisions at 2.3 qkeV and 0.18qkeV by time of flight (TOF) spectroscopy. For Ar{sup 8-16+}, recoil ion charge states up to 6+ are clearly present, indicating that the 3p subshell in the target atom is being depleted, while for Ar{sup 10-16+}, there is evidence that target 3s electrons are also being removed. Comparison of the recoil ion charge state spectra at 2.3 and 0.18 qkeV shows that for a given projectile charge, there is very little dependence of the observed recoil target charge state distribution on projectile energy.

  5. The effects of retrograde reactions and of diffusion on 39Ar-40Ar ages of micas

    DEFF Research Database (Denmark)

    Allaz, Julien; Engi, Martin; Berger, Alfons

    2011-01-01

    Effects of metamorphic reactions occurring during decompression were explored to understand their influence on 39Ar-40Ar ages of micas. Monometamorphic metasediments from the Lepontine Alps (Switzerland) were studied. Collected samples reached lower amphibolite facies during the Barrovian....../K and Cl/K ratios) did not change and the resulting ages can be interpreted unambiguously. In mineral separates containing two white micas, Ca/K and Cl/K ratios were variable, reflecting non-simultaneous laboratory degassing of the two heterochemical Ar-reservoirs. These ratios were used to identify each...... Ar reservoir and to unravel the age. In a chlorite-margarite-biotite-calcschist equilibrated near 560 °C and 0.65 GPa, biotite, margarite, and muscovite all yield ages around 18 Ma. At slightly higher grade (560-580 °C, 0.8-0.9 GPa), the assemblage muscovite-paragonite-plagioclase is at equilibrium...

  6. Revis\\~ao da Constru\\c{c}\\~ao de Modelos Supersim\\'etricos

    CERN Document Server

    Rodríguez, M C

    2001-01-01

    Foi com base neste estudo que fizemos a constru\\c{c}\\~ao da vers\\~ao supersim\\'etrica dos modelos de simetria $SU(3)_{C} \\otimes SU(3)_{L} \\otimes U(1)_{N}$ \\cite{susy331}, apresentado no final da minha tese de doutorado \\cite{mcr1}. Bem como dos estudos fenomenol\\'ogicos subsequente \\cite{mcr}.

  7. Into the Blue: AO Science with MagAO in the Visible

    CERN Document Server

    Close, Laird M; Follette, Katherine B; Hinz, Phil; Morzinski, Katie M; Wu, Ya-Lin; Kopon, Derek; Riccardi, Armando; Esposito, Simone; Puglisi, Alfio; Pinna, Enrico; Xompero, Marco; Briguglio, Runa; Quiros-Pacheco, Fernando

    2014-01-01

    We review astronomical results in the visible ({\\lambda}<1{\\mu}m) with adaptive optics. Other than a brief period in the early 1990s, there has been little astronomical science done in the visible with AO until recently. The most productive visible AO system to date is our 6.5m Magellan telescope AO system (MagAO). MagAO is an advanced Adaptive Secondary system at the Magellan 6.5m in Chile. This secondary has 585 actuators with < 1 msec response times (0.7 ms typically). We use a pyramid wavefront sensor. The relatively small actuator pitch (~23 cm/subap) allows moderate Strehls to be obtained in the visible (0.63-1.05 microns). We use a CCD AO science camera called "VisAO". On-sky long exposures (60s) achieve <30mas resolutions, 30% Strehls at 0.62 microns (r') with the VisAO camera in 0.5" seeing with bright R < 8 mag stars. These relatively high visible wavelength Strehls are made possible by our powerful combination of a next generation ASM and a Pyramid WFS with 378 controlled modes and 1000...

  8. Twelve thousand laser-AO observations: first results from the Robo-AO large surveys

    Science.gov (United States)

    Law, Nicholas M.; Baranec, Christoph; Riddle, Reed L.

    2014-07-01

    Robo-AO is the first AO system which can feasibly perform surveys of thousands of targets. The system has been operating in a fully robotic mode on the Palomar 1.5m telescope for almost two years. Robo-AO has completed nearly 12,000 high-angular-resolution observations in almost 20 separate science programs including exoplanet characterization, field star binarity, young star binarity and solar system observations. We summarize the Robo-AO surveys and the observations completed to date. We also describe the data-reduction pipeline we developed for Robo-AO—the first fully-automated AO data-reduction, point-spread-function subtraction and companion-search pipeline.

  9. BIOLOGIA NA AULA DE CAMPO: RECONHECENDO A INTERDISCIPLINARIDADE ATRAVÉS DA VISITA AO GEOPARK ARARIPE.

    Directory of Open Access Journals (Sweden)

    Larissa Martins Silva

    2014-12-01

    Full Text Available As aulas de campo se apresentam como uma prática educativa que visa aprimorar os conhecimentos dos discentes e aproximá-los do mundo dos livros através de experiências reais, regionais e cotidianas. Pensando nisso o IFRN-Câmpus Macau realizou uma aula de campo para os alunos do 6° período em Biologia, com destino à cidade do Crato/CE, a fim de visitar o Geopark Araripe. Sendo assim, procuramos entender se aconteceu ou não a integração entre as diversas disciplinas do referido curso ao longo da visita a esse geoparque. Para isso, foi aplicado um questionário aberto com esse alunado para investigar se conseguiram enxergar o caráter interdisciplinar contido no Geopark Araripe e relacionar a importância desta aula com a formação acadêmica dos mesmos. Portanto, consultamos alguns autores como Kochhann, Omelli e Pinto (2007 que abordam em seus estudos a questão da interdisciplinaridade e também Brito e Perinotto (2011 referentes às pesquisas sobre o Geopark Araripe. Os resultados demonstraram que 100% dos participantes da pesquisa acreditam que existe interdisciplinaridade contida em diversos pontos do geoparque sendo as disciplinas de Paleontologia, Botânica e Geologia as mais citadas. No tocante a formação acadêmica, novamente 100% dos participantes enfatizou que apresenta aspectos positivos. Contudo, conclui-se que os estudantes possuem um bom entendimento sobre o enfoque interdisciplinar existente nos diversos espaços visitados na aula de campo. Assim, a interdisciplinaridade presente no Geopark Araripe tem grande relevância científica, educacional e até mesmo didática, sendo estas características essenciais para a formação acadêmica desses futuros profissionais da educação.

  10. 40Ar* loss in experimentally deformed muscovite and biotite with implications for 40Ar/39Ar geochronology of naturally deformed rocks

    Science.gov (United States)

    Cosca, M.; Stunitz, H.; Bourgeix, A.-L.; Lee, J.P.

    2011-01-01

    The effects of deformation on radiogenic argon (40Ar*) retentivity in mica are described from high pressure experiments performed on rock samples of peraluminous granite containing euhedral muscovite and biotite. Cylindrical cores, ???15mm in length and 6.25mm in diameter, were drilled from granite collected from the South Armorican Massif in northwestern France, loaded into gold capsules, and weld-sealed in the presence of excess water. The samples were deformed at a pressure of 10kb and a temperature of 600??C over a period 29 of hours within a solid medium assembly in a Griggs-type triaxial hydraulic deformation apparatus. Overall shortening in the experiments was approximately 10%. Transmitted light and secondary and backscattered electron imaging of the deformed granite samples reveals evidence of induced defects and for significant physical grain size reduction by kinking, cracking, and grain segmentation of the micas.Infrared (IR) laser (CO2) heating of individual 1.5-2.5mm diameter grains of muscovite and biotite separated from the undeformed granite yield well-defined 40Ar/39Ar plateau ages of 311??2Ma (2??). Identical experiments on single grains separated from the experimentally deformed granite yield results indicating 40Ar* loss of 0-35% in muscovite and 2-3% 40Ar* loss in biotite. Intragrain in situ ultraviolet (UV) laser ablation 40Ar/39Ar ages (??4-10%, 1??) of deformed muscovites range from 309??13 to 264??7Ma, consistent with 0-16% 40Ar* loss relative to the undeformed muscovite. The in situ UV laser ablation 40Ar/39Ar ages of deformed biotite vary from 301 to 217Ma, consistent with up to 32% 40Ar* loss. No spatial correlation is observed between in situ 40Ar/39Ar age and position within individual grains. Using available argon diffusion data for muscovite the observed 40Ar* loss in the experimentally treated muscovite can be utilized to predict average 40Ar* diffusion dimensions. Maximum 40Ar/39Ar ages obtained by UV laser ablation overlap those

  11. Estados Unidos: do Iraque ao Brasil

    Directory of Open Access Journals (Sweden)

    Virgílio Caixeta Arraes

    2010-12-01

    Full Text Available O presente artigo busca analisar os recentes temas recorrentes na política externa norte-americana, caracterizada pela “guerra contra o terror”, e seus impactos para a agenda a ser discutida na vindoura visita do presidente dos Estados Unidos, Geoge W. Bush, ao Brasil.

  12. Enseñar un oficio, proponer una forma

    OpenAIRE

    Vitale, Daniele

    2015-01-01

    El oficio de enseñar. Enseñar a través de la técnica, enseñar por vía de la cultura. Una ciudadela de figuras. Imitación y relación personal. Enseñar a partir de un sistema. Partir del inicio. Posponer la realidad Peer Reviewed

  13. On concentration of $^{42}$Ar in the Earth's atmosphere

    CERN Document Server

    Barabash, A S

    2016-01-01

    Data from the DBA liquid argon ionization chamber experiment have been used to obtain an estimate on the concentration of $^{42}$Ar in the Earth's atmosphere, $6.8^{+1.7}_{-3.2}\\cdot10^{-21}$ atoms of $^{42}$Ar per atom of $^{40}$Ar corresponding to the $^{42}$Ar activity of $1.2^{+0.3}_{-0.5}$ $\\mu$Bq per cubic meter of air.

  14. On concentration of 42Ar in the Earth's atmosphere

    Science.gov (United States)

    Barabash, A. S.; Saakyan, R. R.; Umatov, V. I.

    2016-12-01

    Data from the DBA liquid argon ionization chamber experiment have been used to obtain an estimate on the concentration of 42Ar in the Earth's atmosphere, 6 .8-3.2+1.7 ·10-21 atoms of 42Ar per atom of 40Ar corresponding to the 42Ar activity of 1 .2-0.5+0.3 μBq per cubic meter of air.

  15. Growth Rate Estimates of Supergene Manganese Nodule by 40Ar/39Ar Isotopic Dating

    Institute of Scientific and Technical Information of China (English)

    Li Jianwei; Vasconcelos P M

    2004-01-01

    Increasing world-class, high-grade, and metals-enriched supergene manganese ore deposits have been discovered in the last two decades, making them more and more economically important. However, data on the timing and duration of their formation are sparse, mainly due to the difficulties extracting datable minerals suited to traditional radiometric dating methods. Hollandite, cryptomelane, coronadite, todorokite, and manjiroite are common manganese oxide minerals in supergene environments. These minerals host potassium of variable amounts from 0.1 wt% to 5.0 wt% in their structural sites. This geochemical property provides possibility to date supergene manganese ores by using K-Ar and 40Ar/39Ar methods. In this study, we perform 40Ar/39Ar dating on a 7.1-cm-thick botryoidal manganese nodule from an ancient weathering profile at Mount Tabor, central Queensland, Australia. Laser microprobe incremental analyses of distinct growth bands, from the inner core through the intermediate bands to the outermost crusts of the nodule, have yielded high quality 40Ar/39Ar ages at 27.3 Ma, 20.9 Ma, 19.2 Ma, and 16.1 Ma, respectively. The age results permit preliminary estimates on the average growth rates of the nodule varying from 4.7×10-3 mm/ka to 7.6×10-3 mm/ka to 9.0×10-3 mm/ka, from the core to the rim. Results of this study are of significance in our understanding of the mode, mechanism, process, and climatic conditions in the formation of supergene manganese ore deposits.

  16. The Subaru Coronagraphic Extreme AO Project

    Science.gov (United States)

    Martinache, Frantz; Guyon, O.; Lozi, J.; Tamura, M.; Hodapp, K.; Suzuki, R.; Hayano, Y.; McElwain, M. W.

    2009-01-01

    While the existence of large numbers of extrasolar planets around solar type stars has been unambiguously demonstrated by radial velocity, transit and microlensing surveys, attempts at direct imaging with AO-equipped large telescopes remain unsuccessful. Because they supposedly offer more favorable contrast ratios, young systems consitute prime targets for imaging. Such observations will provide key insights on the formation and early evolution of planets and disks. Current surveys are limited by modest AO performance which limits inner working angle to 0.2", and only reach maximum sensitivity outside 1". This translates into orbital distances greater than 10 AU even on most nearby systems, while only 5 % of the known exoplanets have a semimajor axis greater than 10 AU. This calls for a major change of approach in the techniques used for direct imaging of the direct vicinity of stars. A sensible way to do the job is to combine coronagraphy and Extreme AO. Only accurate and fast control of the wavefront will permit the detection of high contrast planetary companions within 10 AU. The SCExAO system, currently under assembly, is an upgrade of the HiCIAO coronagraphic differential imaging camera, mounted behind the 188-actuator curvature AO system on Subaru Telescope. This platform includes a 1000-actuator MEMS deformable mirror for high accuracy wavefront correction and a PIAA coronagraph which delivers high contrast at 0.05" from the star (5 AU at 100 pc). Key technologies have been validated in the laboratory: high performance wavefront sensing schemes, spider vanes and central obstruction removal, and lossless beam apodization. The project is designed to be highly flexible to continuously integrate new technologies with high scientific payoff. Planned upgrades include an integral field unit for spectral characterization of planets/disks and a non-redundant aperture mask to push the performance of the system toward separations less than lambda/D.

  17. Regulation of AR Degradation and Function by Ubiquitylation

    Science.gov (United States)

    2015-10-01

    STATEMENT Approved for Public Release; Distribution Unlimited 13. SUPPLEMENTARY NOTES 14. ABSTRACT The pathways that normally mediate AR...ligase (CHIP) may mediate the polyubiquitylation and proteasome degradation of AR that fails to fold appropriately and bind ligand. However, there are...pathways that normally mediate the ubiquitin dependent or independent degradation of AR, which might be targeted therapeutically, remain to be

  18. Antarlides: A New Type of Androgen Receptor (AR) Antagonist that Overcomes Resistance to AR-Targeted Therapy.

    Science.gov (United States)

    Saito, Shun; Fujimaki, Takahiro; Panbangred, Watanalai; Igarashi, Yasuhiro; Imoto, Masaya

    2016-02-18

    Prostate cancer is treated with androgen receptor (AR) antagonists but most patients experience disease progression after long-term treatment with these compounds. Therefore, new AR antagonists are required for patient follow-up treatment. In the course of screening for a new AR antagonist, we isolated the novel compounds antarlides A-E (1-5) from Streptomyces sp. BB47. Antarlides are mutually isomeric with respect to the double bond and have a 22-membered-ring macrocyclic structure. The full stereostructure of 1 was established by chemical modifications, including methanolysis, the Trost method, acetonide formation, and the PGME method. 1-5 inhibited the binding of androgen to ARs in vitro. In addition, 2 inhibited the transcriptional activity of not only wild-type AR but also mutant ARs, which are seen in patients with acquired resistance to clinically used AR antagonists. Therefore, antarlides are a potent new generation of AR antagonists that overcome resistance.

  19. Tracking fluid action in Little Sark Pluton (Channel Islands, UK): a UV laserprobe Ar/Ar study of excess 40Ar

    Science.gov (United States)

    Schwenzer, S. P.; Schwanethal, J.; Tindle, A. G.; Kelley, S. P.; Sherlock, S. C.

    2011-12-01

    Little Sark pluton (Channel Islands, UK) is a weakly to moderately deformed pluton of quartz diorite composition. Zircon from Little Sark has been dated as 611.4(+2.1/-1.3) Ma [Miller et al. 1991, Tectonophysics, 312], whereas titanite has an age of 606.2±0.6 Ma. Hornblende yields an Ar-Ar age of 606.4±3.4 Ma [Dallmeyer et al., 1991, J. Geol. Soc. London 148]. The rocks show evidence for post-magmatic hydrous alteration including chloritisation of biotite, and sericite formation in feldspar. We investigated the alteration in order to understand its influence on the Ar-Ar system. Detailed petrographic investigations of two samples indicate different deformation levels - S1, (less deformed), and S2 (more deformed). The feldspar is andesine to oligoclase in composition, but contains K-rich areas with patchy and sometimes cleavage guided sericitization. Mafic minerals include hornblende and biotite (the latter partially chloritized). Ar-Ar investigations were carried out using high spatial resolution UV laser ablation gas release in combination with a Nu instruments Noblesse gas mass spectrometer using spots of 80 to 140 μm diameter. Mafic minerals in S1 have highly variable 38Ar/39Ar and 37Ar/39Ar ratios and unusually high atmospheric contents for such old samples, possibly reflecting the presence of fluid inclusions associated with the sericite, particularly in the feldspar. The apparent ages in their entirety range from 429 to 668 Ma. Hornblende yields homogeneous apparent ages, whereas the younger and older ages are measured in both micas and feldspars, whose apparent ages range from 245-670 Ma. The modal age for feldspar is around 400-450 Ma, but this may not have geological meaning. Sample S2 shows many of the same features as S1. Mafic minerals span a slightly smaller age range and feldspars display apparent ages of ~245-645 Ma with a mode around 480 Ma. The alteration of both samples appears to have been accompanied by the introduction of 40Ar-rich fluids

  20. The thermal history of the Lhasa Block, South Tibetan Plateau based on FTD and Ar-Ar dating

    CERN Document Server

    Yang, T F; Lo Chong Huah; Chung, S L; Tien, R L; Xu, R; Deng, W

    1999-01-01

    Twelve basement samples were collected from South Tibet Plateau for FTD and Ar-Ar analysis to demonstrate their uplifting history since Cenozoic era. The preliminary results from different minerals with different closure temperatures, including apatite and zircon for fission-track dating, and K-feldspar, biotite for Ar-Ar dating, show that at least four stages of thermal history can be recognized in the studied area.

  1. Percepção da aplicação tópica ocular de drogas: comparação entre instilação de gotas em olhos abertos e vaporização em olhos fechados

    Directory of Open Access Journals (Sweden)

    Arlindo José Freire Portes

    2014-04-01

    Full Text Available Objetivo: Avaliar por questionário qual o nível de facilidade ou dificuldade para aplicação tópica de medicações oculares: vaporização em olho fechado ou instilação de gotas em olho aberto e constatar por meio da observação de pacientes pelos autores qual o método que foi utilizado com maior adequação técnica para aplicação de drogas tópicas oculares. Métodos: A pesquisa foi um ensaio clínico pareado e randomizado, realizada nos meses de agosto e setembro de 2012 no ambulatório de Oftalmologia da Policlínica Ronaldo Gazolla (Campus Arcos da Lapa, Faculdade de Medicina da Universidade Estácio de Sá, RJ em 50 pacientes conveniados de planos de saúde ou do SUS. Foi utilizado um frasco de colírio e um de vaporizador com solução Optive®. Cada participante aplicou em um dos olhos a solução por vaporização ou instilação de gotas através de um processo randomizado. Foi perguntado aos pacientes questões pré-formuladas sobre a praticidade de ambos os métodos e observada à técnica de aplicação. Resultados: 32% acharam difícil ou muito difícil a vaporização em olho fechado e 34% a instilação de colírio (p=0,9562. A dificuldade mais comum para ambos os métodos foi "acertar o olho" e ocorreu em 53% dos pacientes que tiveram dificuldades para vaporização e por 65%dos que apresentaram dificuldade para aplicação de colírio. 38% dos pacientes necessitaram de mais de uma instilação para aplicação do colírio, enquanto 30% dos pacientes precisaram de mais de uma aplicação para que a droga vaporizada tivesse contato com o olho (p=0,5224. Em 74% dos pacientes houve toque da ponta do colírio com os cílios, já com o vaporizador não houve um toque do orifício do vaporizador com o dedo do paciente (p=0,5433. Conclusão: A maior facilidade ou dificuldade percebida pelos pacientes foi equivalente para instilar o colírio em relação à vaporização em olho fechado. O método da vaporização foi

  2. Avaliação da tolerabilidade e do controle de ciclo de dois contraceptivos orais de baixa dose: estudo comparativo aberto Assessment of the tolerability and cycle control of two low-dose oral contraceptives: an open-label study

    Directory of Open Access Journals (Sweden)

    Edmund C. Baracat

    1998-06-01

    Full Text Available Realizou-se um estudo aberto comparativo em nove centros brasileiros para avaliar a tolerabilidade e o controle de ciclo obtido com o uso de dois contraceptivos orais de baixa dose contendo 20 mg etinilestradiol/75 mg gestodeno e 20 mg etinilestradiol/150 mg desogestrel, durante seis ciclos de tratamento. Foram selecionadas 167 mulheres saudáveis com vida sexual ativa (77 no grupo do gestodeno e 90 no grupo do desogestrel, das quais 138 completaram os seis ciclos de tratamento. Em um subgrupo de novas usuárias realizou-se também perfil lipídico e hemostático. Foram avaliados 867 ciclos no total. Ocorreu sangramento irregular em 4,6% dos ciclos com gestodeno e em 8,1% com desogestrel. A tolerabilidade a ambas preparações foi boa, mas houve significativamente mais náusea no grupo do desogestrel. O controle de ciclo foi bom com os dois contraceptivos, sendo que houve freqüência significativamente menor de sangramento irregular no grupo do gestodeno quando se leva em conta que todos os ciclos foram considerados. Não houve alterações clinicamente significativas no perfil hemostático. O perfil lipídico mostrou tendência a tornar-se mais favorável após seis ciclos de tratamento com as duas preparações. Não ocorreu alteração no peso médio das mulheres no grupo do gestodeno; no grupo do desogestrel houve aumento significativo no peso médio de aproximadamente 1 kg após seis meses de tratamento. A adesão ao tratamento foi boa com as duas preparações. Os resultados deste estudo mostram que preparações contendo baixa dose de gestodeno ou desogestrel associados a 20 mg de etinilestradiol são contraceptivos bem tolerados que permitem bom controle de ciclo, sem efeitos colaterais significantes.An open-label comparative study was conducted in nine centers in Brazil to evaluate the tolerability and cycle control of two low-dose oral contraceptives containing 20 mg ethynylestradiol/75 mg gestodene and 20 mg ethynylestradiol/150 mg

  3. Ar + NO microwave plasmas for Escherichia coli sterilization

    Energy Technology Data Exchange (ETDEWEB)

    Hueso, Jose L; Rico, Victor J; Cotrino, Jose; Gonzalez-Elipe, Agustin R [Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC-Universidad de Sevilla, Centro de Investigaciones Cientificas Isla de la Cartuja, Avda. Americo Vespucio 49, 41092 Sevilla (Spain); Frias, Jose E [Instituto de BioquImica Vegetal y FotosIntesis (IBVF-CSIC). Centro de Investigaciones CientIficas Isla de la Cartuja. Avda Americo Vespucio, 49, 41092 Sevilla (Spain)], E-mail: jhueso@icmse.csic.es

    2008-05-07

    Ar + NO microwave discharges are used for sterilization and the results are compared with additional experiments with Ar, O{sub 2} and N{sub 2}-O{sub 2} plasma mixtures. The NO{sup *} species produced in the Ar-NO mixtures remain up to long distances from the source, thus improving the sterilization efficiency of the process. E. coli individuals exposed to the Ar + NO plasma undergo morphological damage and cell lysis. Combined effects of etching (by O{sup *} and Ar{sup *} species) and UV radiation (from deactivation of NO{sup *} species) are responsible for the higher activity found for this plasma mixture. (fast track communication)

  4. Ar-Ar and Rb-Sr Ages of the Tissint Olivine-phyric Martian Shergottite

    Science.gov (United States)

    Park, J.; Herzog, G. F.; Nyquist, L. E.; Shih, C.-Y.; Turin, B.; Lindsay, F. N.; Delaney, J. S.; Swisher, C. C., III; Agee, C.

    2013-01-01

    The fifth martian meteorite fall, Tissint, is an olivine-phyric shergottite that contains olivine macrocrysts (approximately 1.5 mm) [1]. [2] reported the Sm-Nd age of Tissint as 596 plus or minus 23 Ma along with Rb-Sr data that defined no isochron. [3] reported Lu-Hf and Sm-Nd ages of 583 plus or minus 86 Ma and 616 plus or minus 67 Ma, respectively. The cosmic-ray exposure ages of Tissint are 1.10 plus or minus 0.15 Ma based on 10Be [4], and 1.0-1.1 Ma, based on 3He, 21Ne, and 38Ar [5,6].We report Ar-Ar ages and Rb-Sr data.

  5. Labirintite consequente ao uso de difenilhidantoina

    Directory of Open Access Journals (Sweden)

    Eneida Baptistete Matarazzo

    1978-03-01

    Full Text Available É relatado o caso de paciente epilético que, aos 16 anos de idade, ao fazer uso de difenilhidantoina, apresentou, já nos primeiros dias, sinais de intolerância, com sensação de formigamento das extremidades. Aos 36 anos voltou a fazer uso desse mesmo medicamento e apresentou sintomas de labirintite, tendo crises de tipo rotatório quando inclinava a cabeça para a esquerda ou a movia bruscamente. O tratamento específico para labirintite, orientado por otorrinolaringologista, foi ineficaz e o quadro clínico agravou-se progressivamente. Ao fim de seis meses seu exame psíquico revelava leve torpor, lentificação do raciocínio, incapacidade para o trabalho e depressão reativa, observando-se, do ponto de vista neurológico, discreto desvio da marcha para a esquerda e discreto aumento da base de sustentação. Além disto referia a existência de crises rotatórias e vômitos tão frequentes que nos últimos dois meses precisou ser hospitalizado algumas vezes, para ser hidratado. A suspensão da difenilhidantoina com manutenção exclusiva de fenobarbital (do qual também já vinha fazendo uso, determinou regressão rápida dos sintomas citados. Tal fato permitiu concluir que a labirintite foi provocada pelo uso da difenilhidantoina e deve ser incluida na extensa relação de efeitos colaterais provocados por essa droga.

  6. Enseñar a ser

    OpenAIRE

    García Barreno, Pedro

    2004-01-01

    El «Informe Delors», cuyo texto fue presentado hace ahora diez años, señala que cualquier proyecto educativo para el siglo XXI debe contemplar dos acciones. «Enseñar a conocer, a hacer, a vivir juntos, a ser», y garantizar el acceso de todos a ello. El siglo que concluyó apenas media docena de años, ha estado cargado de inmensas paradojas: entre grandes males, extraordinarios logros y no pocas esperanzas inalcanzadas. Marcado por dos guerras mundiales, po...

  7. Abordagens ao aprendizado político

    Directory of Open Access Journals (Sweden)

    Krischke, Paulo J.

    2002-01-01

    Full Text Available Há um reconhecimento crescente entre os cientistas políticos de que uma fonte principal para a conquista e o aperfeiçoamento da democracia é o aprendizado político por parte dos atores sociais e políticos. Contudo, a bibliografia especializada não considera satisfatoriamente como o aprendizado político reorienta os comportamentos e atitudes em apoio à democracia política e seu aperfeiçoamento. A presente proposta acata esse desafio, numa revisão teórica inicial das abordagens existentes ao aprendizado político no contexto da globalização. Num primeiro momento, considera as limitações da abordagem ao estudo das elites nos processos de democratização. Em segundo lugar salienta as dificuldades da teoria da modernização para enfrentar o tema, nos estudos sobre os públicos massivos. Mais adiante sugere as contribuições que uma abordagem inspirada nos trabalhos de Jürgen Habermas pode proporcionar ao estudo do aprendizado político. E conclui indicando certas interfaces temáticas a serem examinadas na bibliografia no contexto da globalização. À luz de resultados de uma pesquisa atualmente em sua fase final

  8. Unveiling Turrialba (Costa Rica) volcano's latest geological evolution through new 40Ar/39Ar, ages

    Science.gov (United States)

    Ruiz Cubillo, P.; Turrin, B. D.; Soto, G. J.; Del Potro, R.; Gagnevin, D.; Gazel, E.; Mora Fernandez, M.; Carr, M. J.; Swisher, C. C.

    2010-12-01

    Step-heating 40Ar/39Ar dating experiments on whole rock matrix were performed on samples from eight key lava flow units from Turrialba, the easternmost volcano of the Central Volcanic Range of Costa Rica. Our results, together with available corrected 14C ages, recent mapping and new geochemical analyses, are part of a study to reconstruct Turrialba’s evolution. The project is being conducted as part of wider studies because of the increase in volcanic activity during the last three years. The geochemical compositions of the lava flow units span the range from basalts to dacites, and commonly have high K2O concentrations, making them good candidates for 40Ar/39Ar radiometric dating. The ages reported here correspond to the Paleo Turrialba (600-250 ka) and Neo Turrialba (< 250 ka) temporal stages. Sample TUR-38 (251 ± 4 ka) belongs to the latest unit of Paleo Turrialba stage, known as Finca Liebres volcano, while the remaining seven samples belong to Neo Turrialba: TUR-30 (99 ± 3 ka), TUR-19 (90 ± 4 ka), TUR-32 (62 ± 2 ka) TUR-33 (61 ± 2 ka), TUR-12 (25 ± 1.9 ka), TUR-36 (10 ± 3 ka) and TUR-08 (3 ± 3 ka). All the obtained ages in this study are in agreement with the local stratigraphy and prior 14C age determinations, adding robustness to our results. According to ages obtained and the areal distribution of the sampled units, the most important construction period of the massif was during the Neo-Turrialba stage which has passed through two important constructing episodes, around 100-60 ka and 10 ka-present. Although our results include some very young ages, all of them meet the established evaluation criteria used for plateau and isochron ages, commonly used for 40Ar/39Ar dating. Furthermore, we used a protocol that closely monitors the mass spectrometer mass discrimination during the measurements to provide additional control. Three of the eight 40Ar/39Ar ages reported here are remarkably young (25 ka or less). Two of those are the samples with the

  9. Tolerância de progênies de cafeeiros (Coffea arabica L.) ao excesso de manganês em solução nutritiva

    OpenAIRE

    Zabini, André Vinicius; Universidade Federal de Viçosa - UFV; Martinez, Hermínia Emília Prieto; Universidade Federal de Viçosa - UFV; Silva, Camila Andrade; Universidade Federal de Viçosa - UFV

    2007-01-01

    A toxidez de manganês é uma das mais comuns entre os micronutrientes, especialmente em solos tropicais ácidos, afetando o crescimento e a produtividade das culturas. Com o objetivo de avaliar a tolerância ao excesso de manganês em progênies de cafeeiros arábica (Coffea arabica L.), foi instalado um experimento fatorial 14 x 2 (14 progênies e 2 concentrações de manganês) no delineamento inteiramente ao acaso com três repetições. As mudas dos cafeeiros foram cultivadas durante sete meses em cas...

  10. The role of mitochondrial fusion and StAR phosphorylation in the regulation of StAR activity and steroidogenesis.

    Science.gov (United States)

    Castillo, Ana F; Orlando, Ulises; Helfenberger, Katia E; Poderoso, Cecilia; Podesta, Ernesto J

    2015-06-15

    The steroidogenic acute regulatory (StAR) protein regulates the rate-limiting step in steroidogenesis, i.e. the delivery of cholesterol from the outer (OMM) to the inner (IMM) mitochondrial membrane. StAR is a 37-kDa protein with an N-terminal mitochondrial targeting sequence that is cleaved off during mitochondrial import to yield 30-kDa intramitochondrial StAR. StAR acts exclusively on the OMM and its activity is proportional to how long it remains on the OMM. However, the precise fashion and the molecular mechanism in which StAR remains on the OMM have not been elucidated yet. In this work we will discuss the role of mitochondrial fusion and StAR phosphorylation by the extracellular signal-regulated kinases 1/2 (ERK1/2) as part of the mechanism that regulates StAR retention on the OMM and activity.

  11. Behavior of argon gas release from manganese oxide minerals as revealed by 40Ar/39Ar laser incremental heating analysis

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Manganese oxides in association with paleo- weathering may provide significant insights into the multiple factors affecting the formation and evolution of weathering profiles, such as temperature, precipitation, and biodiversity. Laser probe step-heating analysis of supergene hollandite and cryptomelane samples collected from central Queensland, Australia, yield well-defined plateaus andconsistent isochron ages, confirming the feasibility dating very-fined supergene manganese oxides by 40Ar/39Ar technique. Two distinct structural sites hostingAr isotopes can be identified in light of their degassing behaviors obtained byincremental heating analyses. The first site, releasing its gas fraction at thelaser power 0.2-0.4 W, yields primarily 40Aratm, 38Aratm, and 36Aratm (atmospheric Ar isotopes). The second sites yield predominantly 40Ar* (radiogenic 40Ar),39ArK, and 38ArK (nucleogenic components), at ~0.5-1.0 W. There is no significant Ar gas released at the laser power higher than 1.0 W, indicating the breakdown of the tunnel sites hosting the radiogenic and nucleogenic components. The excellent match between the degassing behaviors of 40Ar*, 39ArK, and 38ArK suggests that these isotopes occupy the same crystallographic sites and that 39ArK lossfrom the tunnel site by recoil during neutron irradiation and/or bake-out procedure preceding isotopic analysis does not occur. Present investigation supports that neither the overwhelming atmospheric 40Ar nor the very-fined nature of the supergene manganese oxides poses problems in extracting meaningful weathering geochronological information by analyzing supergene manganese oxides minerals.

  12. Astronomical calibration of 40Ar/39Ar reference minerals using high-precision, multi-collector (ARGUSVI) mass spectrometry

    Science.gov (United States)

    Phillips, D.; Matchan, E. L.; Honda, M.; Kuiper, K. F.

    2017-01-01

    The new generation of multi-collector mass spectrometers (e.g. ARGUSVI) permit ultra-high precision (1%) in 40K decay constants and the ages of natural reference minerals that form the basis of the technique. For example, reported ages for widely used 40Ar/39Ar reference materials, such as the ca. 28 Ma Fish Canyon Tuff sanidine (FCTs) and the ca. 1.2 Ma Alder Creek Rhyolite sanidine (ACRs), vary by >1%. Recent attempts to independently calibrate these reference minerals have focused on K-Ar analyses of the same minerals and inter-comparisons with astronomically tuned tephras in sedimentary sequences and U-Pb zircon ages from volcanic rocks. Most of these studies used older generation (effectively single-collector) mass spectrometers that employed peak-jumping analytical methods to acquire 40Ar/39Ar data. In this study, we reassess the inter-calibration and ages of commonly used 40Ar/39Ar reference minerals Fish Canyon Tuff sanidine (FCTs), Alder Creek Rhyolite sanidine (ACRs) and Mount Dromedary biotite (MD2b; equivalent to GA-1550 biotite), relative to the astronomically tuned age of A1 Tephra sanidine (A1Ts), Faneromeni section, Crete (Rivera et al., 2011), using a multi-collector ARGUSVI mass spectrometer. These analyses confirm the exceptional precision capability (0.1% in the 40Ar/39Ar ages of reference minerals without consideration of recoil artefacts, thus limiting the benefits of high precision multi-collector analyses. Significant improvement to the accuracy of the 40Ar/39Ar method (<0.1%) will require further inter-laboratory 40Ar/39Ar studies utilizing multi-collector mass spectrometry, additional constraints on recoil 39ArK loss from reference minerals, further resolution of discrepancies between astronomically tuned sedimentary successions and refinement of the 238U/206Pb zircon age cross-calibration approach.

  13. New high-precision 40Ar/39Ar ages on Oligocene volcanic rocks of northwestern Kenya

    Science.gov (United States)

    Brown, Francis H.; Jicha, Brian R.

    2016-02-01

    New, high-precision 40Ar/39Ar ages from volcanic rocks in northwestern Kenya are provided for some areas of exposure in this remote area. We report seven 40Ar/39Ar ages generated from single crystal total fusion experiments on alkali feldspar separated from volcanic rocks in the Mogila, Songot, and Lokwanamur Ranges and the Gatome valley. A rhyolite from the lower part of the sequence in the Mogila Range yielded ages of 32.31 ± 0.06 Ma and 32.33 ± 0.07 Ma, and a rhyolite near the top of that sequence yielded 31.67 ± 0.04 Ma. A single sample from the Songot Range yielded an age of 32.49 ± 0.07 Ma, slightly older than the rocks collected from Mogila. In both ranges the early Oligocene rhyolites are underlain by basalts, as is also the case in the Labur Range. Ages of 25.95 ± 0.03 Ma, 25.91 ± 0.04 Ma, and 27.15 ± 0.03 Ma were measured on alkali feldspar from rhyolites from the Lokwanamur Range, and the nearby Gatome valley. All of these rocks are part of an episode of widespread volcanism in northwestern Kenya in the mid-to late Oligocene that is not currently known from the Ethiopian Rift Valley.

  14. Identification of an AR mutation-negative class of androgen insensitivity by determining endogenous AR activity

    NARCIS (Netherlands)

    Hornig, N.C.; Ukat, M.; H.U. Schweikert (H.); O. Hiort (Olaf); Werner, R.; S.L.S. Drop (Stenvert); M.L. Cools (Martine); I.A. Hughes (Ieuan A.); L. Audí (Laura); S.F. Ahmed (S. Faisal); Demiri, J.; Rodens, P.; Worch, L.; Wehner, G.; Kulle, A.E.; Dunstheimer, D.; Müller-Roßberg, E.; T. Reinehr (Thomas); Hadidi, A.T.; Eckstein, A.K.; Van Der Horst, C.; Seif, C.; R. Siebert (Reiner); O. Ammerpohl (Ole); P-M. Holterhus (Paul-Martin)

    2016-01-01

    textabstractContext: Only approximately 85%of patients with a clinical diagnosis complete androgen insensitivity syndrome and less than 30%with partial androgen insensitivity syndrome can be explained by inactivating mutations in the androgen receptor (AR) gene. Objective: The objective of the study

  15. Fluvoxamina no transtorno depressivo maior: um estudo multicêntrico aberto Fluvoxamine in the treatment of major depressive disorder: an open multicentric study

    Directory of Open Access Journals (Sweden)

    José Alberto Del Porto

    2007-01-01

    Full Text Available OBJETIVO: Este trabalho estudou a eficácia e a tolerabilidade da fluvoxamina no tratamento, de forma aberta, sem comparação com placebo ou outros agentes, por 6 semanas, de pacientes com o diagnóstico de transtorno depressivo maior (TDM. Constitui-se em objetivo secundário do estudo avaliar os efeitos da fluvoxamina sobre o sono dos pacientes. MÉTODOS: Foram incluídos 104 pacientes, maiores de 18 anos, com o diagnóstico de TDM, de acordo com os critérios do Manual Diagnóstico e Estatístico de Transtornos Mentais, 4ª edição (DSM-IV, e com escores, na Escala de Hamilton para Depressão, versão de 17 itens (HAM-D 17, de 17 pontos ou mais. Avaliou-se a eficácia da fluvoxamina por meio das Escalas HAM-D 17 e da CGI (Impressão Clínica Global. A análise dos itens 4, 5 e 6 da HAM-D 17 foi utilizada para a avaliação do sono dos pacientes. Avaliaram-se a segurança e a tolerabilidade da fluvoxamina ao longo das 6 semanas, registrando-se quaisquer eventos adversos. A fluvoxamina foi inicialmente ministrada em doses de 50 ou 100 mg/dia, podendo haver aumentos progressivos até 300 mg/dia. RESULTADOS: Dos 104 pacientes incluídos, 81 (78% concluíram o estudo. Obtiveram resposta favorável (diminuição de 50% ou mais na HAM-D 17 69% dos pacientes, e a taxa de remissão (HAM-D 17 OBJECTIVE: This research studied the efficacy and tolerability of fluvoxamine in the treatment of major depressive disorder (MDD, during 6 weeks, in an open trial, without placebo or active comparator. A secondary objective was the evaluation of the effects of fluvoxamine on the sleep of the pacients. METHODS: 104 patients were inicially included, with the diagnosis of MDD in accordance to the criteria of the Diagnostic and Statistical Manual for Mental Disorders, 4th edition (DSM-IV. Patients should have scores > 17 in the Hamilton Depression Scale for Depression 17 itens (HAM-D 17. The efficacy of fluvoxamine was studied through the HAM-D 17 and CGI (Clinical

  16. A method for intercalibration of U-Th-Pb and 40Ar- 39Ar ages in the Phanerozoic

    Science.gov (United States)

    Villeneuve, Mike; Sandeman, Hamish A.; Davis, William J.

    2000-12-01

    The increasing analytical precision of 40Ar- 39Ar geochronological data and its use in studies that combine U-Pb and 40Ar- 39Ar data has necessitated derivation of a means to intercalibrate ages between the two isotopic systems. The primary determinants inhibiting accurate cross calibration are uncertainty in decay constant values and uncertainty in 40Ar∗/ 40K (usually presented as apparent age) for 40Ar- 39Ar standards, notably those derived from the Fish Canyon Tuff. By utilizing a monazite- and biotite bearing Oligocene ash flow tuff (MAC-83) as the primary standard material, precise U-Th-Pb and 40Ar- 39Ar ages can be derived. Because both isotopic systems should reflect closure during the instantaneous eruption event, the 24.21 ± 0.10 Ma 207Pb/ 235U age should match the age resulting from 40Ar- 39Ar biotite analysis. This forced equivalence will partly offset the effects of decay constant uncertainty. Furthermore, by co-irradiating Fish Canyon Tuff sanidine with MAC-83 biotite, the apparent age for Fish Canyon Tuff sanidine is back-calculated to 27.98 ± 0.15 Ma, relative to the MAC-83 207Pb/ 235U age. Hence, intercalibration between the two isotopic systems in a relative sense can be accomplished, allowing for a direct and valid comparison of ages. It is also shown that forcing equivalence of the two isotopic systems minimizes the effect of decay constant uncertainty for samples of Phanerozoic age.

  17. Esta é minha carta ao mundo

    Directory of Open Access Journals (Sweden)

    Fernanda Mourão

    2009-01-01

    Full Text Available A partir da primeira carta de Emily Dickinson (1830-1886 a Thomas Higginson, que então seria seu “preceptor” e interlocutor para sempre, este texto propõe uma leitura da obra da escritora norte-americana a partir do biografema da carta e da ideia de sua obra como “carta ao mundo” – conforme um de seus mais famosos poemas –, com todas as implicações trazidas pelo termo, e à luz das teorias de Roland Barthes, Maurice Blanchot e Silvina Rodrigues Lopes, entre outros.

  18. AO corrected satellite imaging from Mount Stromlo

    Science.gov (United States)

    Bennet, F.; Rigaut, F.; Price, I.; Herrald, N.; Ritchie, I.; Smith, C.

    2016-07-01

    The Research School of Astronomy and Astrophysics have been developing adaptive optics systems for space situational awareness. As part of this program we have developed satellite imaging using compact adaptive optics systems for small (1-2 m) telescopes such as those operated by Electro Optic Systems (EOS) from the Mount Stromlo Observatory. We have focused on making compact, simple, and high performance AO systems using modern high stroke high speed deformable mirrors and EMCCD cameras. We are able to track satellites down to magnitude 10 with a Strehl in excess of 20% in median seeing.

  19. Identification and analysis of ARS function of six plant MARs

    Institute of Scientific and Technical Information of China (English)

    LI Hong; YANG Yutao; ZHANG Kewei; ZHENG Chengchao

    2004-01-01

    Six plant MARs isolated from tobacco and Arabdiposis were investigated for their ARS activity in yeast.The results showed that among the six plant MARs, only TM1 and AM4 had strong ARS activity which was almost the same as that of ARS from yeast chromosome. In order to further identify the core region of the two MARs for the ARS activity, a series of subclones were created by PCR strategy,and the corresponding subclones were designated as TM1-1,TM1-2, TM1-3, AM4-1, AM4-2 and AM4-3, respectively. Our studies revealed that TM1-3 and AM4-3 not only had higher ARS activity, but also displayed higher transformation frequency, plasmid stability and growth rate compared to their intact MARs, TM1 and AM4. These data present an important clue for further elucidating the relationship between MAR and ARS.

  20. Contribuição ao manejo sustentável do complexo ferruginoso nectandra na floresta nacional de Ibirama, SC Contribution to sustainable forest management of the nectandra ferruginous complex in the Ibirama national forest, SC, Brazil

    Directory of Open Access Journals (Sweden)

    Fernando Campanhã Bechara

    2009-02-01

    Full Text Available Diante do mercado aberto para a produção de madeiras tropicais, o complexo ferruginoso Nectandra (CFN, formado pelo grupo de espécies Nectandra lanceolata, N. oppositifolia e N. rigida (canelas-ferrugem, possui aspectos promissores, pois apresenta madeira de alto valor mercadológico e com potencial silvicultural. Esse grupo de espécies é de difícil distinção em campo, justificando-se o manejo do complexo em conjunto. Essas são as primeiras espécies madeireiras a se tornarem abundantes em florestas secundárias na Região Sul do país, favorecidas pela abertura de pequenas clareiras. Realizaram-se estudos demográficos desse grupo, na FLONA de Ibirama, SC, objetivando alicerçar o manejo sustentável de madeira para serraria. Numa Floresta Ombrófila Densa de 38 ha, foram inventariados todos os indivíduos do CFN presentes em 14 parcelas aleatórias de 40 x 40 m. Caracterizou-se a distribuição espacial das árvores, bem como a produção de madeira. A população apresentou distribuição espacial aleatória, sendo 58% de toras de boa qualidade. Ocorreram 43 indivíduos/ha na regeneração, o que caracteriza a formação de banco de plântulas. Foi possível explorar 11 árvores/ha (com DAP > 16 cm, o que representaria 3,5 m³ de madeira/ha. Um ciclo de corte de 20 anos renderia quase 7 m³ de madeira de alta qualidade ao ano. Dez por cento das árvores adultas apresentaram três rebrotas/indivíduo, estabelecendo o potencial de segunda rotação. As árvores classificadas como toras de "baixa qualidade" (32% do total e com DAP > 40 cm podem ser deixadas como porta-sementes. Recomendam-se estudos mais detalhados de demografias espacial e temporal, autoecologia e análise econômica para alicerçar o manejo sustentável.In view of the opening of the tropical wood production market, the Nectandra ferruginous complex (NFC, defined as a group of Nectandra species - N. lanceolata, N. oppositifolia and N. rigida - offers promising

  1. Enseñar a ser

    Directory of Open Access Journals (Sweden)

    García Barreno, Pedro

    2004-09-01

    Full Text Available El «Informe Delors», cuyo texto fue presentado hace ahora diez años, señala que cualquier proyecto educativo para el siglo XXI debe contemplar dos acciones. «Enseñar a conocer, a hacer, a vivir juntos, a ser», y garantizar el acceso de todos a ello. El siglo que concluyó apenas media docena de años, ha estado cargado de inmensas paradojas: entre grandes males, extraordinarios logros y no pocas esperanzas inalcanzadas. Marcado por dos guerras mundiales, por genocidios, por la acelerada degradación de la biosfera o por la miseria de una masa de marginados frente al creciente bienestar de los privilegiados.…

  2. Plasma AR and abiraterone-resistant prostate cancer.

    Science.gov (United States)

    Romanel, Alessandro; Gasi Tandefelt, Delila; Conteduca, Vincenza; Jayaram, Anuradha; Casiraghi, Nicola; Wetterskog, Daniel; Salvi, Samanta; Amadori, Dino; Zafeiriou, Zafeiris; Rescigno, Pasquale; Bianchini, Diletta; Gurioli, Giorgia; Casadio, Valentina; Carreira, Suzanne; Goodall, Jane; Wingate, Anna; Ferraldeschi, Roberta; Tunariu, Nina; Flohr, Penny; De Giorgi, Ugo; de Bono, Johann S; Demichelis, Francesca; Attard, Gerhardt

    2015-11-01

    Androgen receptor (AR) gene aberrations are rare in prostate cancer before primary hormone treatment but emerge with castration resistance. To determine AR gene status using a minimally invasive assay that could have broad clinical utility, we developed a targeted next-generation sequencing approach amenable to plasma DNA, covering all AR coding bases and genomic regions that are highly informative in prostate cancer. We sequenced 274 plasma samples from 97 castration-resistant prostate cancer patients treated with abiraterone at two institutions. We controlled for normal DNA in patients' circulation and detected a sufficiently high tumor DNA fraction to quantify AR copy number state in 217 samples (80 patients). Detection of AR copy number gain and point mutations in plasma were inversely correlated, supported further by the enrichment of nonsynonymous versus synonymous mutations in AR copy number normal as opposed to AR gain samples. Whereas AR copy number was unchanged from before treatment to progression and no mutant AR alleles showed signal for acquired gain, we observed emergence of T878A or L702H AR amino acid changes in 13% of tumors at progression on abiraterone. Patients with AR gain or T878A or L702H before abiraterone (45%) were 4.9 and 7.8 times less likely to have a ≥50 or ≥90% decline in prostate-specific antigen (PSA), respectively, and had a significantly worse overall [hazard ratio (HR), 7.33; 95% confidence interval (CI), 3.51 to 15.34; P = 1.3 × 10(-9)) and progression-free (HR, 3.73; 95% CI, 2.17 to 6.41; P = 5.6 × 10(-7)) survival. Evaluation of plasma AR by next-generation sequencing could identify cancers with primary resistance to abiraterone.

  3. Practical reactor production of {sup 41}Ar from argon clathrate

    Energy Technology Data Exchange (ETDEWEB)

    Mercer, J.R. E-mail: jmercer@pharmacy.ualberta.ca; Duke, M.J.M.; McQuarrie, S.A

    2000-06-01

    The radionuclide {sup 41}Ar has many ideal properties as a gas flow tracer. However, the modest cross-section of {sup 40}Ar for thermal neutron activation makes preparation of suitable activities of {sup 41}Ar technically difficult particularly for low flux reactors. Argon can however be trapped in a molecular complex called a clathrate that can then be irradiated. We prepared argon clathrate and explored its irradiation and stability characteristics. Argon clathrate can be used to provide gigabecquerel quantities of {sup 41}Ar even with low power reactors.

  4. Nefrocalcinose associada ao uso de esteroide anabolizante

    Directory of Open Access Journals (Sweden)

    Weverton Machado Luchi

    2015-03-01

    Full Text Available Os esteroides anabolizantes têm sido usados como arma terapêutica em diversas condições clínicas. Entretanto, o uso abusivo e indiscriminado, associado a outros suplementos nutricionais, tem gerado efeitos adversos graves. Relato do caso: Sexo masculino, 21 anos, admitido com náuseas, astenia, hiporexia, cefaleia e hipertensão arterial. Exames no sangue evidenciaram Cr: 3,9 mg/dl U:100 mg/dl e Cálcio total 14 mg/dl. Ultrassonografia e biópsia renal compatíveis com nefrocalcinose. Houve melhora gradativa da função renal e da calcemia após hidratação vigorosa e furosemida. Entretanto, após 1 ano, persistiram depósitos renais de cálcio e relação córticomedular reduzida ao ultrassom e creatinina estável em 1,4 mg/dl. Casos anteriores evidenciaram necrose tubular aguda e nefrite intersticial com poucos depósitos de cálcio no interstício renal. Nesse caso, encontramos nefrocalcinose acentuada associada à nefroesclerose. O objetivo deste estudo é relatar a ocorrência de injúria renal aguda com nefrocalcinose associada ao uso de esteroide anabolizante e oferecer uma revisão do assunto.

  5. Microbial contamination of central supply systems for medical air Contaminação microbiana dos sistemas centrais de abastecimento de ar medicinal

    Directory of Open Access Journals (Sweden)

    Carolina Machado Andrade

    2003-11-01

    Full Text Available There are many standards and recommendations for breathing air quality associated with respiratory protection equipment, but little has been done regarding the possible microbial contamination of medical air. The present study demonstrates quantitatively and qualitatively that pipelines might be incriminated as source of microbial contamination of compressed and synthetic air for medical use. Air samples were drawn into an especially pressure-resistant device and the bacterial and fungi contents were identified after growth on agar plates. The bacterial flora isolated from peripheral air outlets was virtually the same as that found in the central air-generating installations, consisting of a mixture of pathogens and normal skin bacteria. Several factors contributing to microbial contamination of medical air are mentioned and preventive measures are discussed.Existem vários padrões e recomendações para a qualidade do ar respirável relacionado aos equipamentos de proteção respiratória, mas pouco tem sido feito em relação a uma possível contaminação microbiana do ar medicinal. O presente trabalho demonstra quantitativa e qualitativamente que as linhas de ar estão relacionadas à contaminação microbiológica do ar comprimido e ar sintético para uso medicinal. Amostras de ar foram coletadas por um equipamento especialmente resistente a pressão, e o conteúdo bacteriano e fúngico foi identificado após crescimento em placa. A flora bacteriana isolada tanto dos sistema periféricos de ar foi virtualmente a mesma encontrada nas instalações centralizadas, sendo uma mistura de patógenos e bactérias normais da pele. Vários fatores contribuintes para a contaminação microbiana do ar medicinal e medidas preventivas são discutidas.

  6. Cosmologia e Representa\\c{c}\\~ao

    CERN Document Server

    Ribeiro, Marcelo Byrro

    2013-01-01

    This work presents a brief and non-technical description of the main results and concepts of the modern scientific cosmology, viewing it from an epistemological perspective which allows a dialog with other modes of thinking like e.g. history, philosophy, sociology and religion. This epistemological viewpoint is based on the philosophical theses advanced by Ludwig Boltzmann (1844-1906) which states that scientific theories are nothing more than representations, or images, of nature (arXiv:physics/0701308v1). By being representations one cannot know how nature really is because the intrinsic and indispensable properties that characterize nature are unreachable by science. In other words, the true essences that constitute nature are unknowable. Therefore, all answers proposed by science are partial, simplified and replaceable. Another way of putting forward this viewpoint is to state that all scientific truths are provisional, a result which naturally leads to the conclusion that the same set of phenomena, or sc...

  7. A psicologia positiva aplicada ao contexto escolar

    OpenAIRE

    Ramôa, Maria Manuel Valente Braz Sepúlveda

    2016-01-01

    Relatório de estágio apresentado à Escola Superior de Educação de Paula Frassinetti para a obtenção de grau de mestre em educação pré-escolar e ensino do 1º ciclo do ensino básico A Psicologia positiva é considerada uma nova perspetiva de investigação e intervenção, promovendo o estudo das condições e processos que contribuem para o florescimento ou funcionamento ótimo das pessoas, grupos ou instituições, pretendendo debruçar-se sobre as experiências positivas tais como as emoções positiva...

  8. 40Ar-39Ar age of carbonatite-alkaline magmatism in Sung Valley, Maghalaya, India

    Indian Academy of Sciences (India)

    Jyotiranjan S Ray; Kanchan Pande

    2001-09-01

    40Ar-39Ar analyses of one alkali pyroxenite whole rock and two phlogopite separates of calcite carbonatites from the Sung Valley carbonatite-alkaline complex, which is believed to be a part of the Rajmahal-Bengal-Sylhet (RBS) ood basalt province, yielded indistinguishable plateau ages of 108.8 ± 2.0 Ma, 106:4 ± 1.3 Ma and 107.5 ± 1.4 Ma, respectively. The weighted mean of these ages, 107.2 ± 0.8 Ma, is the time of emplacement of this complex. This implies that Sung Valley complex and probably other such complexes in the Assam-Meghalaya Plateau postdate the main ood basalt event (i.e., the eruption of tholeiites) in the RBS province by ∼10 Ma.

  9. 40Ar/39Ar dates from the West Siberian Basin: Siberian flood basalt province doubled.

    Science.gov (United States)

    Reichow, Marc K; Saunders, Andrew D; White, Rosalind V; Pringle, Malcolm S; Al'Mukhamedov, Alexander I; Medvedev, Alexander I; Kirda, Nikolay P

    2002-06-07

    Widespread basaltic volcanism occurred in the region of the West Siberian Basin in central Russia during Permo-Triassic times. New 40Ar/39Ar age determinations on plagioclase grains from deep boreholes in the basin reveal that the basalts were erupted 249.4 +/- 0.5 million years ago. This is synchronous with the bulk of the Siberian Traps, erupted further east on the Siberian Platform. The age and geochemical data confirm that the West Siberian Basin basalts are part of the Siberian Traps and at least double the confirmed area of the volcanic province as a whole. The larger area of volcanism strengthens the link between the volcanism and the end-Permian mass extinction.

  10. Acoustic resonance spectroscopy (ARS): ARS300 operations manual, software version 2.01

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-07-25

    Acoustic Resonance Spectroscopy (ARS) is a nondestructive evaluation technology developed at the Los Alamos National Laboratory. The ARS technique is a fast, safe, and nonintrusive technique that is particularly useful when a large number of objects need to be tested. Any physical object, whether solid, hollow, or fluid filled, has many modes of vibration. These modes of vibration, commonly referred to as the natural resonant modes or resonant frequencies, are determined by the object`s shape, size, and physical properties, such as elastic moduli, speed of sound, and density. If the object is mechanically excited at frequencies corresponding to its characteristic natural vibrational modes, a resonance effect can be observed when small excitation energies produce large amplitude vibrations in the object. At other excitation frequencies, i.e., vibrational response of the object is minimal.

  11. Cooling age of Dabie orogen, China, determined by 40Ar-39Ar and fission track techniques

    Institute of Scientific and Technical Information of China (English)

    陈江峰; 谢智; 刘顺生; 李学明; K.A.Foland

    1995-01-01

    Based on 40Ar-39Ar results of hornblendes and biotites and fission track dating results of apatites separated from the same rock samples, cooling history of rocks from Dabie orogen is discussed. Rocks from both Southern Dabie Terrain (SDT) and Northern Dabie Terrain (NDT) have an early fast cooling followed by a more recent slow cooling. Rocks from SDT cooled to about 540℃ at about 190 Ma B.C., while rocks from NDT cooled to about 540℃ at 125 Ma B C. Until about 110-120 Ma B.C., rocks from both SDT and NDT cooled to about 100℃. This suggests that a relative movement among rocks from SDT, NDT and ul-Ira-high pressure metamorphic rocks exis-ts before 110-120 Ma B.C.

  12. Laser step-heating 40Ar/39Ar dating on young volcanic rocks

    Institute of Scientific and Technical Information of China (English)

    WANG Fei; HE Huaiyu; ZHU Rixiang; YANG Liekun; SANG Haiqing; WANG Yinglan

    2006-01-01

    An attempt was made to use CO2 laser step-heating method to date the late Pleistocene basaltic groundmass (DF-2) from Tengchong volcanic field. Among the fourteen heating steps, ten define a good inverse isochron (MSWD = 1.4) with an age of 32.2 ± 7.1 ka (2 σ).The inverse isochron also shows that the initial argon isotopic ratio is 297.1±2.0 (2σ)which is the same as the atmospheric argon at the 2σ error level. Study indicates that it is a useful means to date young volcanic groundmass with low K content by using CO2 laser step-heating 40Ar/39Ar method.

  13. Spatial autocorrelation method using AR model; Kukan jiko sokanho eno AR model no tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Yamamoto, H.; Obuchi, T.; Saito, T. [Iwate University, Iwate (Japan). Faculty of Engineering

    1996-05-01

    Examination was made about the applicability of the AR model to the spatial autocorrelation (SAC) method, which analyzes the surface wave phase velocity in a microtremor, for the estimation of the underground structure. In this examination, microtremor data recorded in Morioka City, Iwate Prefecture, was used. In the SAC method, a spatial autocorrelation function with the frequency as a variable is determined from microtremor data observed by circular arrays. Then, the Bessel function is adapted to the spatial autocorrelation coefficient with the distance between seismographs as a variable for the determination of the phase velocity. The result of the AR model application in this study and the results of the conventional BPF and FFT method were compared. It was then found that the phase velocities obtained by the BPF and FFT methods were more dispersed than the same obtained by the AR model. The dispersion in the BPF method is attributed to the bandwidth used in the band-pass filter and, in the FFT method, to the impact of the bandwidth on the smoothing of the cross spectrum. 2 refs., 7 figs.

  14. Diferentes Metodologias Aplicadas ao Ensino de Astronomia

    Science.gov (United States)

    Albrecht, E.; Voelzke, M. R.

    2007-08-01

    Espera-se que o educando ao final da educação básica, adquira uma compreensão atualizada das hipóteses, modelos e formas de investigação sobre a origem e evolução do Universo em que vive. O presente trabalho tem como principal objetivo compreender dentre três práticas pedagógicas adotadas no Ensino de Astronomia, na terceira série do Ensino Médio, da Escola Estadual Colônia dos Pescadores, qual melhor cumpre o papel de formação e aprendizagem para vida. A pesquisa preliminar foi através de um questionário onde o intuito foi diagnosticar o conhecimento já existente acerca do tema em questão. O questionário é composto de vinte questões dissertativas e objetivas, onde os educandos das três turmas envolvidas o responderam. Este trabalho utiliza as seguintes metodologias: a tradicional, onde o professor é um repassador de informações, fazendo uso exclusivo de lousa e giz; a segunda também de forma tradicional, porém com auxílio de multimídia para desenvolvimento das aulas e aterceira sob forma de seminários, elaborados e apresentados pelos educandos, no qual o educador faz apenas as intervenções necessárias. Ao final do trabalho os alunos responderão novamente o questionário inicial para diagnosticar dentre as três metodologias utilizadas qual apresentou melhor resultado. Os resultados preliminares obtidos, já podem ser observados e, dos 119 alunos entrevistados, as respostas obtidas são as mais diversas e evidenciam que a grande maioria nunca teve em sua vida escolar o tema Astronomia. Ao serem questionados se já haviam estudado Astronomia as respostas foram: turma A: sim 43%; turma B: sim: 21%; turma C: sim: 24%. Porém quando questionados a respeito do significado de Astronomia observou-se que: turma A: 100% de acertos; turma B: 64% acertos; turma C: 84% de acertos, demonstrando claramente a aprendizagem em diferentes esferas, não dependendo unicamente da escola. Até o presente momento, verificou-se que há interesse em

  15. Regulation of AR Degradation and Function by Ubiquitylation

    Science.gov (United States)

    2014-10-01

    Identify ubiquitylation sites associated with degradation of the unliganded AR. We have used liquid chromatography followed by tandem mass spectrometry (LC...unmodified AR band in another gel slice). Protein in gel slices was then digested with trypsin (which leaves a gly-gly tag on ubiquitin-modified proteins

  16. Aspects of What Makes or Breaks a Museum AR Experience

    DEFF Research Database (Denmark)

    Madsen, Claus B.; Madsen, Jacob Boesen; Morrison, Ann

    2012-01-01

    The paper critically evaluates central aspects of an iPad AR application developed for a museum context. The application is designed for children aged 8 to 12 and mixes AR and mini-game elements to convey dramatized historical events. The game has been deployed for roughly 3 months and the findin...

  17. 75 FR 12163 - Class E Airspace; Mountain View, AR

    Science.gov (United States)

    2010-03-15

    ... Federal Aviation Administration 14 CFR Part 71 Class E Airspace; Mountain View, AR AGENCY: Federal... proposes to amend Class E airspace at Mountain View, AR. Decommissioning of the Wilcox non-directional beacon (NDB) at Mountain View Wilcox Memorial Field Airport has made this action necessary for the...

  18. Conservação de rúcula minimamente processada produzida em campo aberto e cultivo protegido com agrotêxtil Conservation of minimally processed rocket produced under open field conditions and non woven polypropylene

    Directory of Open Access Journals (Sweden)

    Angela F Gonzalez

    2006-09-01

    Full Text Available Folhas de rúcula produzidas em campo aberto e sob cultivo protegido com agrotêxtil foram minimamente processadas, embaladas inteiras ou picadas em bandejas de poliestireno expandido e cobertas com filme de PVC de 14 micras. O delineamento adotado foi o inteiramente casualizado em esquema fatorial 2x2x2 (ambiente de cultivo, forma de preparo e refrigeração a 0(0C e 10(0C, com quatro repetições por tratamento, totalizando 32 bandejas. Os tratamentos foram armazenados a 0ºC e 10ºC por 10 dias, quando foram avaliadas as variáveis perda de massa (%; pH; sólidos solúveis; acidez titulável; cor e aparência. A conservação a 0ºC promoveu uma diminuição da perda de peso da rúcula minimamente processada. A utilização de folhas inteiras ou minimamente processadas foi significativa para sólidos solúveis sendo os maiores valores encontrados para as folhas inteiras. Para folhas picadas observou-se valores de acidez significativamente maiores para as produzidas sob ambiente natural. Independente da forma de preparo, a rúcula produzida em ambiente natural apresentou menor valor de pH. A cor e aparência da rúcula não foram influenciadas pelos tratamentos.Leaves of rocket salad produced under open field and non woven polypropylene were minimally processed and packed entire or pricked in polyestyrene trays covered with PVC film of 14 micras. The treatments were stored at 0(0C and 10(0C per 10 days, when the variables weight loss (%; pH; soluble solids; titratable acidity; colour and appearance were evaluated. The conservation under 0(0C promoted a reduction of weight loss on rocket salad minimally processed. Using entire or minimally processed leaves were significant for soluble solids the biggest values being found for entire leaves. For pricked leaves bigger values of acidity were observed for the produced ones under natural environment. Independent of the preparation form rocket salad produced under natural environment presented minor

  19. AR Sco: A White Dwarf Synchronar

    CERN Document Server

    Katz, J I

    2016-01-01

    The emission of the white dwarf-M dwarf binary AR Sco is driven by the rapid synchronization of its white dwarf, rather than by accretion. This requires a comparatively large magnetic field $\\sim 100$ gauss at the M dwarf and $\\sim 10^8$ gauss on the white dwarf, larger than the fields of most intermediate polars but within the range of fields of known magnetic white dwarfs. The spindown power is dissipated in the atmosphere of the M dwarf by magnetic reconnection, accelerating particles that produce the observed synchrotron radiation. The displacement of the optical maximum from conjunction may be explained either by dissipation in a bow wave as the white dwarf's magnetic field sweeps past the M dwarf or by a misaligned white dwarf's rotation axis and oblique magnetic moment. In the latter case the rotation axis precesses with a period of decades, predicting a drift in the orbital phase of maximum. Binaries whose emission is powered by synchronization may be termed synchronars, in analogy to magnetars.

  20. AR Sco: A Precessing White Dwarf Synchronar?

    Science.gov (United States)

    Katz, J. I.

    2017-02-01

    The emission of the white dwarf–M dwarf binary AR Sco is driven by the rapid synchronization of its white dwarf, rather than by accretion. Synchronization requires a magnetic field ∼100 Gauss at the M dwarf and ∼ {10}8 Gauss at the white dwarf, larger than the fields of most intermediate polars but within the range of fields of known magnetic white dwarfs. The spindown power is dissipated in the atmosphere of the M dwarf, within the near zone of the rotating white dwarf’s field, by magnetic reconnection, accelerating particles that produce the observed synchrotron radiation. The displacement of the optical maximum from conjunction may be explained either by dissipation in a bow wave as the white dwarf’s magnetic field sweeps past the M dwarf or by a misaligned white dwarf rotation axis and oblique magnetic moment. In the latter case the rotation axis precesses with a period of decades, predicting a drift in the orbital phase of the optical maximum. Binaries whose emission is powered by synchronization may be termed synchronars, in analogy to magnetars.

  1. Laser fusion 40Ar/39Ar dating on young volcanic rocks.%(极)年轻火山岩激光熔蚀40Ar/39Ar定年

    Institute of Scientific and Technical Information of China (English)

    周晶; 季建清; Alan DEINO; 龚俊峰; 韩宝福; 涂继耀; 桑海清; 徐剑光

    2013-01-01

    It is extremely difficult to date young volcanic rocks.Accurate 40Ar/39Ar dating research and practice of young volcanic rocks in China put forward several notable and important points during the process of 40Ar/39 Ar dating for young volcanic rocks.Because of the low background level,small sample quantity,and high sensitivity of modem noble gas isotope mass spectrometry device,laser ablation 40Ar/39Ar dating technique has been used in depth application in volcanic rocks dating.With the laser in 40Ar/39Ar dating of young and modern volcanic rocks,the discrepancy of Nier value and initial argon isotope ratio in Quaternary samples may cause a remarkable deviation between K-Ar apparent age and 40 Ar/39 Ar apparent age.The deviation show exponential increase for samples younger than 0.2Ma,but it is not so notable for samples older than 2Ma.There out,the boundary of young and modern volcanic rocks,which is applied to 40 Ar/39 Ar system,is assigned at 0.2Ma:rocks aged 2 ~ 0.2Ma is defined as young volcanic rock,while rocks aged younger than 0.2Ma is defined as modem volcanic rock.The phenocrysts,which are from different argon isotope fractionation system,should be rejected from the sample during 40Ar/39 Ar dating.According to rock texture and grain size of mineral,the matrix should be picked with ideal grain size.In normal cases,about 0.2mm (or 60 ~ 80 mesh) is recommended; Cooling time after irradiation of fast neutron reactor should not be no more than three months,or else it may cause an error on 37 Ar measurement,and consequently on final results.As neutron-flux monitor,standards should be characteristic of high homogeneity during laser 40Ar/39Ar dating.In calibrating the international and domestic standards we have,we find that SB-778-Bi,Bern4M and BT-1 can be ideal standard samples with good homogeneity.We also find that the isochron age calculated from the laser 40Ar/39Ar data of the phenocryst and matrix,which were cooled and crystallized at the same time

  2. Application of the antibiotic disk diffusion method to multivariate profiling of soil bacterial community: comparing the power to discriminate different soils and dimension of the discrimination with that of the Biolog method Aplicação do método de difusão de disco de antibiótico para traçar o perfil da comunidade bacteriana no solo: comparação de seu poder discriminatório e dimensão da discriminação em relação ao método Biolog

    Directory of Open Access Journals (Sweden)

    Ryoichi Doi

    2003-12-01

    Full Text Available The antibiotic disk diffution (ADD method was compared with the Biolog method in terms of power to discriminate soils and dimension of the discrimination. Soils from a forest and a citrus field in Thailand were profiled with these methods. These methods differentiated the soils in the principal component score plots. Then, Wilk's lambda statistic was determined to estimate power of these methods to discriminate the soils. The ADD method scored Wilk's lambda of 0.003 (p = 0.144 and 0.000 (p=0.020, for direct and ratio-transformed calculation, respectively. The Biolog method recorded Wilk's lambda of 0.001 (p=0.067, 0.003 (p=0.144 and 0.035 (p=0.440, at 0.25, 0.50 and 0.75 average well color developments (AWCDs, respectively. The ADD method showed high discrimination power, or at least comparable to that of the Biolog method. Redundancy analysis (RDA resulted in ordination diagrams, which revealed a difference in dimension of the soil discrimination among the methods and the AWCDs. The soil environmental factors significantly related to the bacterial profiles at p=0.05 were: available phosphorus (ADD method and Biolog 0.25 AWCD, and pH (Biolog 0.50 and 0.75 AWCD. These results indicated that the profiling methods and the AWCDs revealed the multidimensionality of the discrimination. The possibility of the application of the ADD method to extraction of such pieces of information for effective land management was suggested.O método de Difusão de Disco de Antibiótico (ADD foi comparado ao método Biolog quanto ao seu poder de discriminar solos e quanto à dimensão da discriminação, analisando-se os solos de uma floresta e de um campo de cítricos na Tailândia. A diferenciação dos solos por esses métodos foi feita de acordo com o score plot do componente principal.Em seguida, determinou-se o valor de lambda de Wilk para estimar o poder discriminatório desses métodos. O método ADD resultou em lambda de Wilk de 0,003 (p=0,144 e 0,035 (p=0

  3. ``Smoking From The Same Pipe": Developement of an 40Ar/39Ar Datting Intercalibration PIpette System (Invited)

    Science.gov (United States)

    Turrin, B. D.; Swisher, C. C.; Deino, A.; Hemming, S. R.; Hodges, K.; Renne, P. R.

    2010-12-01

    The precision and accuracy of Ar isotope ratio measurements is one of the main limiting factors in the uncertainties of an 40Ar/39Ar age. Currently, it is relatively common to measure Ar isotopic ratios to a precision of 1-2‰ or better on an intralaboratory basis. This level of analytical precision equates to a comparable level of precision (1-3‰) in the calculated age, depending on the extent of atmospheric Ar contamination, importance of nucleogenic interference corrections, and other factors. However, it has become clear that improving the precision of mass spectrometry is not the only bottleneck towards improving the accuracy and precision of 40Ar/39Ar dating in general. Rather, the most urgent issue is interlaboratory reproducibility. This became obvious in a recent EARTHTIME initiative undertaken to intercalibrate two commonly used 40Ar/39Ar standards [the Fish Canyon sanidine (FCs) and the Alder Creek sanidine (ACs)]. This effort revealed variations amongst laboratories (at the 1-2% level), an order of magnitude greater than the internal analytical precisions. To address these issues, we have proposed (to NSF) to construct two identical pipette systems loaded to identical starting pressures and with identical isotopic compositions. One pipette system will travel between participating 40Ar/39Ar labs and the second system will not travel and serve as the “Master” system to test for any fractionation or undocumented depletion of the traveling pipette system. In order to ensure delivery of uniform amounts of homogenous gas, the pipette system will be computer-controlled with preprogrammed routines and lockouts to prevent compromising the reservoirs. The pipette systems will deliver three gas samples with different isotopic ratios at two different pressures/concentrations. One pipette bulb will be of atmospheric isotopic composition, and the other two pipette bulbs will have 40Ar*/39ArK ratios corresponding to co-irradiated ACs and FCs fixed by their

  4. Evaluation of the IPCC Models (AR4 and AR5) in the Precipitation Simulation in the Northeast of Brazil

    Science.gov (United States)

    Alves, José; Vasconcelos Junior, Francisco; Chaves, Rosane; Silva, Emerson; Servain, Jacques; Costa, Alexandre; Sombra, Sérgio; Barbosa, Augusto; Dos Santos, Antonio

    2016-04-01

    With the simulations of the models used in the latest reports from the Intergovernmental Panel on Climate Change (IPCC), comparative studies are necessary between observations and the so-called historical run (C20) and future projections of the AR4 (A2) and AR5 (RCP8.5) experiments, in order to assess whether the AR5 models had a better performance in the representation of physical processes. This article compares the sensitivity of IPCC models (AR4 and AR5) in representing the anuall average and seasonal rainfall variation (summer and autumn) in three regions of the Northeast of Brazil between 1979 and 2000, using the CMAP - CPC (Merged Analysis of Precipitation) data as reference. The projections made by these models for the period 2040-2070 were also analyzed.

  5. 40Ar/39Ar geochronology and exhumation of mylonitized metamorphic complex in Changle-Nanao ductile shear zone

    Institute of Scientific and Technical Information of China (English)

    王志洪; 卢华复

    1997-01-01

    New 40Ar/39Ar plateau ages from rocks of Changle-Nanao ductile shear zone are 107.9 Ma(Mus), 108.2 Ma(Bi), 107. 1 Ma(Bi), 109. 2 Ma(Hb) and 117. 9 Ma(Bi) respectively, which are concordant with their isochron ages and record the formation age of the ductile shear zone. The similarity and apparent overlap of the cooling ages with respective closure temperatures of 5 minerals document initial rapid uplift during 107-118 Ma following the collision between the Min-Tai microcontinent and the Min-Zhe Mesozoic volcanic arc. The 40Ar/39Ar plateau ages, K-Ar date of K-feldspar and other geochronologic information suggest that the exhumation rate of the ductile shear zone is about 0.18-1.12 mm/a in the range of 107-70 Ma, which is mainly influenced by tectonic extension.

  6. LGS-AO Imaging of Every Kepler Planet Candidate: the Robo-AO KOI Survey

    Science.gov (United States)

    Baranec, Christoph; Law, Nicholas; Morton, Timothy; Ziegler, Carl; Nofi, Larissa; Atkinson, Dani; Riddle, Reed

    2015-12-01

    The Robo-AO Kepler Planetary Candidate Survey is observing every Kepler planet candidate host star with laser adaptive optics imaging, to search for blended nearby stars which may be physically associated companions and/or responsible for transit false positives. We will present the results from searching for companions around over 3,000 Kepler planet hosts in 2012-2015. We will describe our first data release covering 715 planet candidate hosts, and give a preview of ongoing results including improved statistics on the likelihood of false positive planet detections in the Kepler dataset, many new planets in multiple star systems, and new exotic multiple star systems containing Kepler planets. We will also describe the automated Robo-AO survey data reduction methods, including a method of using the large ensemble of target observations as mutual point-spread-function references, along with a new automated companion-detection algorithm designed for extremely large adaptive optics surveys. Our first data release covered 715 objects, searching for companions from 0.15” to 2.5” separation with contrast up to 6 magnitudes. We measured the overall nearby-star-probability for Kepler planet candidates to be 7.4+/-1.0%, and we will detail the variations in this number with stellar host parameters. We will also discuss plans to extend the survey to other transiting planet missions such as K2 and TESS as Robo-AO is in the process of being re-deployed to the 2.1-m telescope at Kitt Peak for 3 years and a higher-contrast Robo-AO system is being developed for the 2.2-m UH telescope on Maunakea.

  7. Review of AO calibrations, or how to best educate your AO system

    Science.gov (United States)

    Kolb, Johann

    2016-07-01

    If the Real-Time Computer is the heart of an AO system, the Wavefront Sensor (WFS) its eyes, the Deformable Mirror (DM) its hands and the control strategy its nervous system, the sum of all those parts is made into a harmonious entity thanks to calibrations. This paper does not have the ambition to provide an overview of all the currently existing calibration strategies, but rather to focus on a few challenging problems and their recent evolution in the era of adaptive telescopes, mostly based on the experience of ESO's Adaptive Optics Instruments in general and the AO Facility in particular. Single most important calibration in post-focal AO system, the recording of the Interaction Matrix (IM) between WFS and DM has since long evolved to use fast modulation techniques, has shown to be feasible on-sky and is now almost free from measurements thanks to its pseudo-synthetic generation, quasi-mandatory solution in an adaptive telescope. Pseudo- because it requires an unprecedented knowledge of the components' characteristics, especially the WFS, DM and the optical registration between the two. Bigger telescopes and the use of Laser Guide Stars (LGS) also mean that the properties of the system will change in time and thus need to be constantly updated thanks to online diagnosis tools for spot size measurement, atmosphere monitoring, Wavefront Sensing and control optimization. New loops come into play like the one to minimize LGS Jitter and the one taking over the telescope active optics by means of offloading the DM low orders, and they all require calibration. More calibration means more time and one has to carefully balance the calibrations that require precious telescope night time, day time or for the best, no telescope time at all. Their importance sometimes underestimated, calibrations have repeatedly shown to be a vital part in the optimum functioning of present and future AO systems.

  8. Ar-40/Ar-39 age determinations for the Rotoiti eruption, New Zealand

    Science.gov (United States)

    Flude, S.; Storey, M.

    2013-12-01

    The contemporaneous Rotoiti and Earthquake Flat ignimbrites, erupted from the Taupo Volcanic zone, New Zealand, form a distinctive tephrostratigraphic horizon in the Southern Pacific. Radioisotopic dating results for these eruptions remain controversial, with published ages ranging from 35.1 × 2.8 ka [1] to 71 × 6 ka [2], with 61.0 × 1.5 ka [3] often being cited as the most widely accepted age. These eruptions are difficult to date as their age is near the limit for various radiometric dating techniques, which are complicated by a large proportion of inherited material (xenocrysts) and a lack of phases suitable for dating. Glass-bearing plutonic blocks erupted with the Rotoiti and Earthquake Flat ignimbrites have previously been interpreted as deriving from a slowly cooled and incompletely solidified magma body that was sampled by the eruptions. They contain large vugs lined with euhedral quartz, sanidine and biotite crystals, indicating that these crystals grew in a gas or aqueous fluid rich environment and are interpreted to have formed shortly before or during eruption. Here we will present Ar-40/Ar-39 ages for sanidines and biotites extracted from vugs in lithic blocks erupted as part of the Earthquake Flat ignimbrite. We show that, even for vug-lining material, inherited ages remain a problem and are the likely source of the wide variation in published radiometric ages. Nevertheless, many of the Ar-40/Ar-39 ages are much younger than the 61 ka age [3] and are more consistent with the recent stratigraphic, C-14 and U-238/Th-230+(U-Th)/He ages that have been suggested (e.g. [4,5]). 1. Whitehead, N. & Ditchburn, R. New Zealand Journal of Geology and Geophysics 37, 381-383 (1994). 2. Ota, Y., Omura, A. & Iwata, H. New Zealand Journal of Geology and Geophysics 32, 327-331 (1989). 3. Wilson, C. J. N. et al. Quaternary Science Reviews 26, 1861-1870 (2007). 4. Molloy, C., Shane, P. & Augustinus, P. Geological Society of America Bulletin 121, 1666-1677 (2009). 5

  9. Adesão ao tratamento da Hanseníase: dificuldades inerentes aos portadores

    Directory of Open Access Journals (Sweden)

    Izaildo Tavares Luna

    2010-12-01

    Full Text Available Esta pesquisa, realizada em Guaiúba, CE, Brasil, objetivou identificar as dificuldades de adesão ao tratamento pelos portadores de hanseníase, relacionando os fatores associados. Estudo qualitativo, cujos dados foram coletados a partir de uma visita domiciliária com roteiro de entrevista contendo sete questões norteadoras. Participaram pacientes com diagnóstico de hanseníase e histórico de não adesão ao tratamento. Utilizou-se o Modelo de Atividade de Vida de Roper, Logan e Tierney. As falas dos sujeitos foram categorizadas de acordo com as doze atividades de vida. A utilização do modelo possibilitou uma abordagem holística sobre as barreiras vivenciadas pelo hanseniano na adesão ao tratamento medicamentoso, de modo a conhecer as atividades de vida destes pacientes para possível adequação de ações voltadas a essa clientela.

  10. Disciplina partidária e apoio ao governo no bicameralismo brasileiro

    Directory of Open Access Journals (Sweden)

    Pedro Robson Pereira Neiva

    2011-06-01

    Full Text Available O artigo avalia a disciplina dos partidos políticos no poder Legislativo brasileiro e o apoio que proporcionam ao governo, sob uma perspectiva bicameral. Busco dois objetivos principais. O primeiro é o de incluir o Senado na discussão sobre o relacionamento entre o poder Executivo e o poder Legislativo no país, comparando-o com a Câmara dos Deputados. Em segundo lugar, procuro avaliar os partidos individualmente, levando em consideração as suas características peculiares, que não são inerentes ao sistema partidário. A análise foi feita a partir das votações nominais realizadas na Câmara dos Deputados e no Senado Federal no período de 1989 a 2008, comparando o comportamento dos partidos entre si e com eles mesmos, ao longo do tempo. A abordagem cross-section e longitudinal permitiu observar resultados até então não identificados pela literatura que trata do relacionamento entre o poder Executivo e o poder Legislativo no país. Apesar de reforçar a corrente da literatura que afirma serem os partidos coesos, disciplinados e previsíveis, argumento que eles diferem substancialmente entre si, seja em suas estratégias, seja em sua forma de articulação. Dada a elevada fragmentação e as características peculiares de cada um dos partidos, não parece apropriado falar-se em atributos sistêmicos, que se estendam para todos eles; menos ainda quando se leva em consideração as duas casas legislativas.

  11. Directly Imaging Planets with SCExAO: First Results

    Science.gov (United States)

    Currie, Thayne M.; Guyon, Olivier; Jovanovic, Nemanja; Lozi, Julien; Tamura, Motohide; Kudo, Tomoyuki; Uyama, Taichi; Garcia, Eugenio

    2017-01-01

    We present the first science results from the newly commissioned Subaru Coronagraphic Extreme Adaptive Optics project, an experimental system dedicated to image faint jovian planets around nearby stars. SCExAO is now achieving true extreme AO capability. We describe the typical performance of SCExAO, the first images of benchmark exoplanets and planet-forming disks, and SCExAO’s first science results. Finally, we briefly chart the path forward for SCExAO to achieve its full scientific capability, including imaging mature planets in reflected light.

  12. Expression of ER and AR in lung cancer

    Directory of Open Access Journals (Sweden)

    Shuling WANG

    2008-02-01

    Full Text Available Background and objective Epidemiology of lung cancer differs between sexes and it might be partially explained by different sex hormone levels in women and men. There are some epidemiological data indicating that gender is a significant, independent prognostic factor in lung cancer. The aim of this study is to determine expression of ER (estrogen receptor and AR (androgen receptor in lung cancer, and evaluate the relationship between their expression and clinical or pathologic characteristics. Methods Immunohistochemistry assay was used to detect expression of ER and AR. Results Positive expression of ER and AR were 14.3%(15/105 and 20%(21/105. Positive expression of ER had no relationship with age, gender, pathology, histological differentiation, TNM staging, size of tumor and lymph node metastasis. Although age, gender, pathology, histological differentiation and size of tumor had no effect on the expression of AR, positive rate of AR in staging III lung cancer was significantly higher than that in staging I lung cancer. The different AR expression was significant between N0 and N2 lymph node metastasis ( Chisquare= 4.7828,P=0.0287. Conclusion The expression of ER has no relationship with biological behavior. Positive expression of AR may be correlated with the progression and the lymph node metastasis of lung cancer.

  13. Medidas socioeducativas: cartas ao reinado do saber

    Directory of Open Access Journals (Sweden)

    Gislei Domingas Romanzini Lazzarotto

    2014-09-01

    Full Text Available O estudo problematiza a experiência desenvolvida na defensoria interdisciplinar de adolescentes em conflito com a lei num programa de extensão acadêmica da Univewrsidade Federal do Rio Grande do Sul, no contexto de políticas públicas brasileiras. A metodologia do estudo consiste em analisar as narrativas sobre o trabalho da equipe de defensoria interdisciplinar discutindo as experiências ali vivenciadas com um olhar crítico sobre as práticas desenvolvidas no atendimento de adolescentes que cumprem medida socioeducativa por terem cometido ato infracional. A análise conceitual é orientada pelo diálogo com o filósofo Michel Foucault, especial em seu texto " La vie des hommes infâmes”, mapeando as relações de poder e saber que regulam as práticas institucionais e visam ao controle social dos indivíduos. A análise possibilita uma reflexão sobre as ligações que são estabelecidas entre os saberes do direito, da psicologia e da pedagogia, produzindo práticas que tendem a regular e prescrever a vida de adolescentes no contexto de atendimento socioeducativo, numa perspectiva de judicialização da vida contemporânea.

  14. Toxicologia do tolueno: aspectos relacionados ao abuso

    Directory of Open Access Journals (Sweden)

    Letícia M.K. Forster

    1994-04-01

    Full Text Available O tolueno está presente em muitos produtos de uso doméstico e industrial e é o principal solvente envolvido no abuso de substâncias e na exposição ocupacional. O problema mais grave no estudo de patologias relacionadas ao tolueno é que este está geralmente associado, em suas preparações comerciais, a outras substâncias. O potencial tóxico do tolueno foi abordado nos seguintes aspectos: parâmetros farmacológicos; características físico-químicas; exposição; estudos clínicos; diagnóstico; pesquisa experimental; tolerância e dependência; efeitos agudos e crônicos; neurotoxicidade; teratogenicidade; doenças psiquiátricas; carcinogenicidade e tratamento. Conclui-se ser de grande importância e urgência que se realizem estudos clínicos com amostras maiores para definição mais precisa das conseqüências do uso crônico

  15. Toxicologia do tolueno: aspectos relacionados ao abuso

    Directory of Open Access Journals (Sweden)

    Forster Letícia M.K.

    1994-01-01

    Full Text Available O tolueno está presente em muitos produtos de uso doméstico e industrial e é o principal solvente envolvido no abuso de substâncias e na exposição ocupacional. O problema mais grave no estudo de patologias relacionadas ao tolueno é que este está geralmente associado, em suas preparações comerciais, a outras substâncias. O potencial tóxico do tolueno foi abordado nos seguintes aspectos: parâmetros farmacológicos; características físico-químicas; exposição; estudos clínicos; diagnóstico; pesquisa experimental; tolerância e dependência; efeitos agudos e crônicos; neurotoxicidade; teratogenicidade; doenças psiquiátricas; carcinogenicidade e tratamento. Conclui-se ser de grande importância e urgência que se realizem estudos clínicos com amostras maiores para definição mais precisa das conseqüências do uso crônico

  16. Electromagnetic DM technology meets future AO demands

    Science.gov (United States)

    Hamelinck, Roger; Rosielle, Nick; Steinbuch, Maarten; Doelman, Niek

    New deformable mirror technology is developed by the Technische Universiteit Eindhoven, Delft University of Technology and TNO Science and Industry. Several prototype adaptive deformable mirrors are realized mirrors, up to 427 actuators and ∅150mm diameter, with characteristics suitable for future AO systems. The prototypes consist of a 100µm thick, continuous facesheet on which low voltage, electromagnetic, push-pull actuators impose out-of-plane displacements. The variable reluctance actuators with ±10µm stroke and nanometer resolution are located in a standard actuator module. Each module with 61 actuators connects to a single PCB with dedicated, 16 bit, PWM based, drivers. A LVDS multi-drop cable connects up to 32 actuator modules. With the actuator module, accompanying PCB and multi-drop system the deformable mirror technology is made modular in its mechanics and electronics. An Ethernet-LVDS bridge enables any commercial PC to control the mirror using the UDP standard. Latest results of the deformable mirror technology development are presented.

  17. Adesao ao guia alimentar para populacao brasileira

    Directory of Open Access Journals (Sweden)

    Eliseu Verly Junior

    2013-12-01

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

  18. Jurassic cooling ages in Paleozoic to early Mesozoic granitoids of northeastern Patagonia: 40Ar/39Ar, 40K-40Ar mica and U-Pb zircon evidence

    Science.gov (United States)

    Martínez Dopico, Carmen I.; Tohver, Eric; López de Luchi, Mónica G.; Wemmer, Klaus; Rapalini, Augusto E.; Cawood, Peter A.

    2016-12-01

    U-Pb SHRIMP zircon crystallization ages and Ar-Ar and K-Ar mica cooling ages for basement rocks of the Yaminué and Nahuel Niyeu areas in northeastern Patagonia are presented. Granitoids that cover the time span from Ordovician to Early Triassic constitute the main outcrops of the western sector of the Yaminué block. The southern Yaminué Metaigneous Complex comprises highly deformed Ordovician and Permian granitoids crosscut by undeformed leucogranite dikes (U-Pb SHRIMP zircon age of 254 ± 2 Ma). Mica separates from highly deformed granitoids from the southern sector yielded an Ar-Ar muscovite age of 182 ± 3 Ma and a K-Ar biotite age of 186 ± 2 Ma. Moderately to highly deformed Permian to Early Triassic granitoids made up the northern Yaminué Complex. The Late Permian to Early Triassic (U-Pb SHRIMP zircon age of 252 ± 6 Ma) Cabeza de Vaca Granite of the Yaminué block yielded Jurassic mica K-Ar cooling ages (198 ± 2, 191 ± 1, and 190 ± 2 Ma). At the boundary between the Yaminué and Nahuel Niyeu blocks, K-Ar muscovite ages of 188 ± 3 and 193 ± 5 Ma were calculated for the Flores Granite, whereas the Early Permian Navarrete granodiorite, located in the Nahuel Niyeu block, yielded a K-Ar biotite age of 274 ± 4 Ma. The Jurassic thermal history is not regionally uniform. In the supracrustal exposures of the Nahuel Niyeu block, the Early Permian granitoids of its western sector as well as other Permian plutons and Ordovician leucogranites located further east show no evidence of cooling age reset since mica ages suggest cooling in the wake of crystallization of these intrusive rocks. In contrast, deeper crustal levels are inferred for Permian-Early Triassic granitoids in the Yaminué block since cooling ages for these rocks are of Jurassic age (198-182 Ma). Jurassic resetting is contemporaneous with the massive Lower Jurassic Flores Granite, and the Marifil and Chon Aike volcanic provinces. This intraplate deformational pulse that affected northeastern

  19. A Survey on Web-based AR Applications

    CERN Document Server

    Parhizkar, Behrang; Lashkari, Arash Habibi; Bartaripou, Mohammad Mehdi; Babae, Hossein Reza

    2011-01-01

    Due to the increase of interest in Augmented Reality (AR), the potential uses of AR are increasing also. It can benefit the user in various fields such as education, business, medicine, and other. Augmented Reality supports the real environment with synthetic environment to give more details and meaning to the objects in the real word. AR refers to a situation in which the goal is to supplement a user's perception of the real-world through the addition of virtual objects. This paper is an attempt to make a survey of web-based Augmented Reality applications and make a comparison among them.

  20. A Survey on Web-based AR Applications

    Directory of Open Access Journals (Sweden)

    Behrang Parhizkar

    2011-07-01

    Full Text Available Due to the increase of interest in Augmented Reality (AR, the potential uses of AR are increasing also. It can benefit the user in various fields such as education, business, medicine, and other. Augmented Reality supports the real environment with synthetic environment to give more details and meaning to the objects in the real word. AR refers to a situation in which the goal is to supplement a user's perception of the real-world through the addition of virtual objects. This paper is an attempt to make a survey of web-based Augmented Reality applications and make a comparison among them.

  1. (40)Ar/(39)Ar Age of Hornblende-Bearing R Chondrite LAP 04840

    Science.gov (United States)

    Righter, K.; Cosca, M.

    2015-01-01

    Chondrites have a complex chronology due to several variables affecting and operating on chondritic parent bodies such as radiogenic heating, pressure and temperature variation with depth, aqueous alteration, and shock or impact heating. Unbrecciated chondrites can record ages from 4.56 to 4.4 Ga that represent cooling in small parent bodies. Some brecciated chondrites exhibit younger ages (much less than 4 to 4.4 Ga) that may reflect the age of brecciation, disturbance, or shock and impact events (much less than 4 Ga). A unique R chondrite was recently found in the LaPaz Icefield of Antarctica - LAP 04840. This chondrite contains approximately 15% hornblende and trace amounts of biotite, making it the first of its kind. Studies have revealed an equigranular texture, mineral equilibria yielding equilibration near 650-700 C and 250-500 bars, hornblende that is dominantly OH-bearing (very little Cl or F), and high D/H ratios. To help gain a better understanding of the origin of this unique sample, we have measured the (40)Ar/(39)Ar age (LAP 04840 split 39).

  2. Mass Spectrometric and Langmuir Probe Measurements in Inductively Coupled Plasmas in Ar, CHF3/Ar and CHF3/Ar/O2 Mixtures

    Science.gov (United States)

    Kim, J. S.; Rao, M. V. V. S.; Cappelli, M. A.; Sharma, S. P.; Meyyappan, M.; Arnold, Jim (Technical Monitor)

    2000-01-01

    Absolute fluxes and energy distributions of ions in inductively coupled plasmas of Ar, CHF3/Ar, and CHF3/Ar/O2 have been measured. These plasmas were generated in a Gaseous Electronics Conference (GEC) cell modified for inductive coupling at pressures 10-50 mTorr and 100-300 W of 13.56 MHz radio frequency (RF) power in various feedgas mixtures. In pure Ar plasmas, the Ar(+) flux increases linearly with pressure as well as RF-power. Total ion flux in CHF3 mixtures decreases with increase in pressure and also CHF3 concentration. Relative ion fluxes observed in the present studies are analyzed with the help of available cross sections for electron impact ionization and charge-exchange ion-molecule reactions. Measurements of plasma potential, electron and ion number densities, electron energy distribution function, and mean electron energy have also been made in the center of the plasma with a RF compensated Langmuir probe. Plasma potential values are compared with the mean ion energies determined from the measured ion energy distributions and are consistent. Electron temperature, plasma potential, and mean ion energy vary inversely with pressure, but increase with CHF3 content in the mixture.

  3. AVALIAÇÃO DA QUALIDADE DO AR INTERIOR DO HOSPITAL UNIVERSITÁRIO PEDRO ERNESTO

    Directory of Open Access Journals (Sweden)

    Eduardo Delfino Sodré

    2014-12-01

    Full Text Available DOI: 10.12957/sustinere.2014.14126A “Síndrome do Edifício Doente” é um termo utilizado para definir a má qualidade do ar de ambientes interiores e tem sido de preocupação crescente da comunidade científica. A avaliação da qualidade do ar, nos locais amostrados no HUPE, fundamentada na resolução n° 9 de 2003 da Agência Nacional de Vigilância Sanitária, teve como objetivos conhecer e informar para que a Comissão de Controle de Infecção Hospitalar avalie a interação deste fator com as infecções nosocomiais e decida pela necessidade, ou não, de medidas corretivas e contribuir para o conhecimento e desenvolvimento de técnicas e controle da poluição “Indoor”. As amostras foram coletadas com um amostrador de ar tipo impactador linear, de um estágio (MERCK e a interpretação dos resultados utilizou dois critérios contidos na norma vigente: o valor máximo aceitável (VMA de fungos em ambientes internos (750UFC/m3 e o limite aceitável entre a contaminação interna e externa (I/E ≤ 1,5. Entre os sessenta ambientes avaliados nos três primeiros pavimentos do HUPE 20% do total encontravam-se em desacordo com relação ao número de UFC/m3 e 16,6% em relação à relação I/E. Conclui-se que 28% dos setores avaliados do 1° pavimento do HUPE e 26% dos contidos no 2° pavimento não estão tendo a renovação de ar desejada, propiciando o acúmulo de fungos.

  4. O tratamento contábil do capital intelectual em empresas com valor de mercado superior ao valor contábil

    Directory of Open Access Journals (Sweden)

    Joel Marques de Oliveira

    2003-08-01

    Full Text Available Este artigo tem por objetivo sintetizar o resultado da pesquisa sobre o tratamento contábil que é aplicado ao capital intelectual, sob a ótica do processo de gestão, representado pelos conceitos e técnicas que são utilizados e que dão suporte à ação da administração, em empresas com valor de mercado superior ao valor contábil. Para atingir este propósito, o artigo consubstancia-se em uma pesquisa realizada em duas empresas de capital aberto, de Santa Catarina, que apresentam valor de mercado, considerado o valor das ações superior ao seu valor contábil. Observou-se que, embora as empresas pesquisadas possuam todas as características das organizações voltadas ao conhecimento e domínio tecnológico, o tratamento contábil do capital intelectual é algo ainda muito incipiente, e que, os critérios utilizados para mensurar, registrar e evidenciar as informações referentes ao capital humano, capital estrutural e capital de clientes, com vistas ao processo de gestão, é algo que ainda carece de uma sistematização, para que se possa refletir, por meio das demonstrações contábeis, alguma posição nesse sentido. Concluiu-se que as empresas pesquisadas, mesmo não possuindo as informações sistematizadas sobre as iniciativas de mensuração do capital intelectual, têm consciência da sua importância. No entanto, para que os gestores desses empreendimentos possam, efetivamente, utilizá-las como um diferencial competitivo no processo de gestão, as informações sistematizadas sobre o capital intelectual devem fazer parte dos relatórios gerados para a tomada de decisões.The objective of this article si to summarize the result of the research about the accounting treatment which is applied to the intellectual capital, through the management viewpoint, in companies with a market value superior than the accounting value. In order to reach this intention, the article is substantiated on a research carried out in two open

  5. 40Ar/39Ar dating of Pleistocene tuffs: an accurate age for the Matuyama-Brunhes geomagnetic reversal (MBGR)

    Science.gov (United States)

    Mark, D. F.; Renne, P. R.; Morgan, L. E.; Deino, A.; Smith, V. C.; Ellis, B. S.; Pearce, N. J.

    2012-12-01

    Recent recalibrations of the 40Ar/39Ar system [1,2] reveal inconsistencies with some previous ages inferred for the MBGR. An Ar/Ar age [3] for the Bishop Tuff (BT) (which post-dates the MBGR by at least 15.3 ± 2.2 ka [3]) recalculated [2] yields an age of 778.0 ± 3.8 ka (1σ, full systematic uncertainty). The age is c. 10 ka older than the BT zircon ID-TIMS U-Pb age [4] and places the MBGR at c. 793 ka, c. 13 and 20 ka older than astronomical ages for the MBGR of 780 ka [5] and 773 ka [6], respectively. To determine an accurate age for the MBGR, we have made a series of 40Ar/39Ar age determinations for Pleistocene tuffs from both Indonesia and North America that have direct relationships to the MBGR. Blind analyses were conducted at SUERC and BGC. We observed excellent inter-laboratory agreement and no systematic offset in data. Ar/Ar ages are reported relative to [2] (1σ, full systematic uncertainty). Drill cores from ODP Site 758 show the precise location of the MBGR. Below the MBGR are two distal tephra horizons that we have identified as products of two temporally distinct Old Toba Tuff (OTT) eruptions (layer d OTT1 and layer D OTT2). Continuous sedimentation between OTT1 (802.8 ± 0.7 ka, n = 100, MSWD 1.2) and OTT2 (796.2 ± 0.8 ka, n = 62, MSWD 1.3) allows for calculation of an accurate sedimentation rate and for extrapolation of an age from OTT2 to the MBGR. Data define an age for the MBGR of 795.2 ± 0.9 ka. Using tephra above the MBGR boundary, the Middle Toba Tuff (layer C) and Young Toba Tuff (layer A), extrapolation down core supports a MBGR age of c. 795 ka. Recent age data for BT sanidine reported relative to FCs at 28.172 Ma (767.4 ± 1.1 Ma) [7] oddly yielded an Ar/Ar age that was indistinguishable from the BT zircon U-Pb age [4], which is consistent with previous 40Ar/39Ar age measurements made relative to FCs at 28.02 Ma [3]. Thus we made a series of 40Ar/39Ar measurements on the exact same sample as used by Rivera et al. [7] and observed

  6. 40Ar/39Ar and U-Th-Pb dating of separated clasts from the Abee E4 chondrite

    Science.gov (United States)

    Bogard, D.D.; Unruh, D.M.; Tatsumoto, M.

    1983-01-01

    Determinations of 40Ar/39Ar and U-Th-Pb are reported for three clasts from the Abee (E4) enstatite chondrite, which has been the object of extensive consortium investigations. The clasts give 40Ar/39Ar plateau ages and/or maximum ages of 4.5 Gy, whereas two of the clasts give average ages of 4.4 Gy. Within the range of 4.4-4.5 Gy these data do not resolve any possible age differences among the three clasts. 206Pb measured in these clasts is only ???1.5-2.5% radiogenic, which leads to relatively large uncertainties in the Pb isochron age and in the 207Pb/206Pb model ages. The Pb data indicate that the initial 207Pb/206Pb was no more than 0.08??0.07% higher than this ratio in Can??on Diablo troilite. The U-Th-Pb data are consistent with the interpretation that initial formation of these clasts occurred 4.58 Gy ago and that the clasts have since remained closed systems, but are contaminated with terrestrial Pb. The 40Ar/39Ar ages could be gas retention ages after clast formation or impact degassing ages. The thermal history of Abee deduced from Ar data appears consistent with that deduced from magnetic data, and suggests that various Abee components experienced separate histories until brecciation no later than 4.4 Gy ago, and experienced no appreciable subsequent heating. ?? 1983.

  7. The Thermo Scientific HELIX-SFT noble gas mass spectrometer: (preliminary) performance for 40Ar/39Ar geochronology

    Science.gov (United States)

    Barfod, D. N.; Mark, D. F.; Morgan, L. E.; Tomkinson, T.; Stuart, F.; Imlach, J.; Hamilton, D.

    2011-12-01

    The Thermo Scientific HELIX-platform Split Flight Tube (HELIX-SFT) noble gas mass spectrometer is specifically designed for simultaneous collection of helium isotopes. The high mass spur houses a switchable 1011 - 1012 Ω resistor Faraday cup and the low mass spur a digital pulse-counting secondary electron multiplier (SEM). We have acquired the HELIX-SFT with the specific intention to measure argon isotopes for 40Ar/39Ar geochronology. This contribution will discuss preliminary performance (resolution, reproducibility, precision etc.) with respect to measuring argon isotope ratios for 40Ar/39Ar dating of geological materials. We anticipate the greatest impact for 40Ar/39Ar dating will be increased accuracy and precision, especially as we approach the techniques younger limit. Working with Thermo Scientific we have subtly modified the source, alpha and collector slits of the HELIX-SFT mass spectrometer to improve its resolution for resolving isobaric interferences at masses 36 to 40. The enhanced performance will allow for accurate and precise measurement of argon isotopes. Preliminary investigations show that we can obtain a valley resolution of >700 and >1300 (compared to standard HELIX-SFT specifications of >400 and >700) for the high and low mass spurs, respectively. The improvement allows for full resolution of hydrocarbons (C3+) at masses 37 - 40 and almost full resolution at mass 36. The HELIX-SFT will collect data in dual collection mode with 40Ar+ ion beams measured using the switchable 1011 - 1012 Ω resistor Faraday cup and 39Ar through 36Ar measured using the SEM. The HELIX-SFT requires Faraday-SEM inter-calibration but negates the necessity to inter-calibrate multiple electron multipliers. We will further present preliminary data from the dating of mineral standards: Alder Creek sanidine, Fish Canyon sanidine and Mount Dromedary biotite (GA1550).

  8. Single-crystal 40Ar/39Ar incremental heating reveals bimodal sanidine ages in the Bishop Tuff

    Science.gov (United States)

    Andersen, N. L.; Jicha, B. R.; Singer, B. S.

    2015-12-01

    The 650 km3 Bishop Tuff (BT) is among the most studied volcanic deposits because it is an extensive marker bed deposited just after the Matuyama-Brunhes boundary. Reconstructions of the vast BT magma reservoir from which high-silica rhyolite erupted have long influenced thinking about how large silicic magma systems are assembled, crystallized, and mixed. Yet, the longevity of the high silica rhyolitic melt and exact timing of the eruption remain controversial due to recent conflicting 40Ar/39Ar sanidine vs. SIMS and ID-TIMS U-Pb zircon dates. We have undertaken 21 40Ar/39Ar incremental heating ages on 2 mm BT sanidine crystals from pumice in 3 widely separated outcrops of early-erupted fall and flow units. Plateau ages yield a bimodal distribution: a younger group has a mean of 766 ka and an older group gives a range between 772 and 782 ka. The younger population is concordant with the youngest ID-TIMS and SIMS U-Pb zircon ages recently published, as well as the astronomical age of BT in marine sediment. Of 21 crystals, 17 yield older, non-plateau, steps likely affected by excess Ar that would bias traditional 40Ar/39Ar total crystal fusion ages. The small spread in older sanidine ages, together with 25+ kyr of pre-eruptive zircon growth, suggest that the older sanidines are not partially outgassed xenocrysts. A bimodal 40Ar/39Ar age distribution implies that some fraction of rhyolitic melt cooled below the Ar closure temperature at least 10 ky prior to eruption. We propose that rapid "thawing" of a crystalline mush layer released older crystals into rhyolitic melt from which sanidine also nucleated and grew immediately prior to the eruption. High precision 40Ar/39Ar dating can thus provide essential information on thermo-physical processes at the millenial time scale that are critical to interpreting U-Pb zircon age distributions that are complicated by large uncertainties associated with zircon-melt U-Th systematics.

  9. Atividade colinesterásica cerebral e comportamento de ratos após exposição perinatal ao diclorvós Brain cholinesterase activity and the behavior of rats after perinatal exposure to dichlorvos

    Directory of Open Access Journals (Sweden)

    Jaqueline Pérola de Souza

    2006-04-01

    Full Text Available O organofosforado diclorvós impregnado em coleiras plásticas é um recurso utilizado em medicina veterinária que visa ao controle de ectoparasitas de cães e gatos. O objetivo deste trabalho foi avaliar os efeitos do uso de coleiras plásticas impregnadas com diclorvós (8,37% em ratas Wistar durante o período de gestação e lactação, como possível fonte de alterações comportamentais e da atividade colinesterásica cerebral dos filhotes. Na desmama, não houve diferença na atividade colinesterásica cerebral entre as mães tratadas com diclorvós e o grupo controle, bem como entre os respectivos filhotes. O tratamento com diclorvós também não influenciou no comportamento geral dos animais, avaliado no campo aberto, nem no nível de ansiedade testado no labirinto em cruz elevado, ambos aos 35 dias pós-natal.The organophosphate dichlorvos impregnated into plastic collars (8.37% is used in veterinary practice as an alternative for the control of ectoparasites in dogs and cats. The aim of this work was to determine the possible toxic effects of these collars in female Wistar rats during pregnancy and lactation, as a possible cause of alterations in brain cholinesterase activity and behavior of offspring. At weaning, there was no difference in brain cholinesterase activity between control and treated dams, nor between their respective offspring as well. The treatment did not affect the general behavior of the offspring, when evaluated in the open field, nor anxiety in the elevated plus-maze, both evaluated on the 35th postnatal day.

  10. Brachyuran Crabs collected at Curaçao

    NARCIS (Netherlands)

    Rathbun, Mary J.

    1924-01-01

    In 1920 a report ¹) on Dr. BOEKE’S collection of crabs and shrimps from Curaçao and other Dutch West Indian Islands was published. Dr. VAN DER HORST’S collection forms an important addition to the fauna of Curaçao, especially as to the Xanthids and Majids, or spider crabs. Four new species were disc

  11. The Birds of Aruba, Curaçao, and Bonaire

    NARCIS (Netherlands)

    Voous, K.H.

    1957-01-01

    This is the second and concluding part of a report on the birds of the Netherlands Antilles, the first part dealt with the birds of St. Martin, Saba, and St. Eustatius (Studies fauna Curaçao Car. Is. 6, no. 25, 1955, p. 1-82). The present part will give a full account of the birds of Aruba, Curaçao,

  12. RadNet Air Data From Little Rock, AR

    Science.gov (United States)

    This page presents radiation air monitoring and air filter analysis data for Little Rock, AR from EPA's RadNet system. RadNet is a nationwide network of monitoring stations that measure radiation in air, drinking water and precipitation.

  13. H- Beam Stripping Loss at Background Partial Pressure of Ar

    Institute of Scientific and Technical Information of China (English)

    Hu Chundong; Wang Shaohu; Hu Liqun

    2005-01-01

    It has been observed that H- current could be improved by adding Ar to H2 plasma.But due to a slower pumping speed for Ar with the existing pumping scheme, the tank pressure will increase quickly during the length of a beam pulse. Since H- stripping loss depends on the tank pressure and gas species, part of the H- beam can be converted to H0 and then H0 can be converted into H+ with background H2 and Ar gas thickness. Therefore, the H- beam current,measured by a Faraday cup, situated at a distance L from GG (ground grid), will decrease because it will be converted into a H+ current. This gives a ratio of the Faraday cup net current to the H- beam current before stripping at background partial pressure of Ar.

  14. POTENCIALIDADES E ESPAÇOS AO EMPREENDEDORISMO

    Directory of Open Access Journals (Sweden)

    Adriano Lago

    2008-12-01

    Full Text Available A criação de negócios é apontada como uma das causas da prosperidade de um local, região, estado ou de um país. É neste sentido que o empreendedorismo tem recebido destaque nos últimos anos, como promotor de novos negócios. Captar, descrever e analisar o fenômeno do empreendedorismo é, portanto, necessário para o desenho de ações de promoção do desenvolvimento. Assim, o presente estudo aborda o empreendedorismo na piscicultura, tomando como base três casos analisados: uma propriedade com rizipiscicultura, uma com piscicultura de ciclo completo inclusive com frigorífico, e outra onde a piscicultura desenvolve-se através de um pesque-pague, com vistas a proporcionar o turismo rural. Para fins de pesquisa, entrevistaram-se os proprietários de cada estabelecimento na busca dos dados necessários para a construção de uma abordagem consistente da temática proposta, ou seja, identificar a presença do empreendedorismo e suas características particulares em cada propriedade analisada. Verificou-se que determinadas características empreendedoras são comuns aos três casos analisados: habilidade para identificar oportunidades; busca de conhecimento de sua área de atuação; senso de organização; disposição para tomar decisões; capacidade de liderança; talento para empreender; otimismo e tino empresarial; ser estrategista, além do dinamismo. Portanto, foi possível observar que o perfil empreendedor dos proprietários de cada negócio tornou possível a transformação de idéias e problemas em oportunidades reais de negócio.

  15. WIYN active optics: a platform for AO

    Science.gov (United States)

    Code, Arthur D.; Claver, Charles F.; Goble, Larry W.; Jacoby, George H.; Sawyer, David G.

    1998-09-01

    The WIYN 3.5 meter telescope is situated on the southwest ridge of Kitt Peak yielding excellent atmosphere seeing conditions. As such, the telescope and enclosure design was directed towards exploiting this feature. The primary mirror was spun cast and figured by the Steward Observatory Mirror Laboratory and the secondary mirror by Contraves. In both cases the performance exceeded the design specifications. The borosilicate primary is actively temperature controlled to within 0.2 C of the desired temperature, typically 0.5 degrees C below the ambient air. The telescope structure is also temperature controlled and the enclosure is opened to the outside ion all sides, which all heat sources are vented to ducts carrying air downwind of the facility. The primary mirror is actively controlled for low order aberrations by 66 axial actuators which are adjusted open loop via force matrix look-up tables and closed loop via real-time wavefront curvature sensing measurements. The active optics also included real-time collimation and focus control. The telescope drive and guider are capable of providing tracking to a few hundredths of a second of arc. By employing active telescope control at this level, it is possible to maintain telescope and local wavefront distortion to a level where atmospheric effects dominate the image quality. Since a significant fraction of the power in the atmospheric disturbances is contained in image motion the first step in adaptive optics control will be simple tip tilt. Studies of higher order AO system are being carried out, as well as additional test characterizing the telescope and site. It is intended to continue such studies in an attempt to establish long term variances.

  16. Août/Magnétique

    Directory of Open Access Journals (Sweden)

    Julia Teles

    2015-12-01

    Full Text Available Julia Teles é técnica em áudio pelo IAV e bacharela em Composição Eletroacústica pela UNESP, tendo concluído o curso em 2012. Na universidade, foi aluna de Flo Menezes e Alexandre Lunsqui, além de ter contato com diversos compositores visitantes, como Annette Vande-Gorne, Barry Truax, entre outros. Em 2011 passou a integrar o grupo NME, atuando na área de produção e composição de obras para concertos, tendo estreado as obras Espasmo, Bezimiani, Miração; chá de coca, Transposição: dois pontos e Começo-fim em concertos do grupo em diversos espaços culturais do estado. Em 2009 iniciou seu estudo do theremin, instrumento com o qual realiza trilhas ao vivo, performances, improvisações, entre outras coisas. Em 2014 cursou composição acusmática sobre suporte analógico em um curso intensivo ministrado por Annette Vande-Gorne no Musiques et Recherches, na Bélgica. Atualmente faz parte do coletivo teatral 28 Patas Furiosas, situado em São Paulo, tendo criado a trilha sonora e operado o som do primeiro espetáculo do grupo, lenz, um outro. Há cerca de três anos atua como editora de som autônoma, tendo trabalhado principalmente no cinema (14 longas-metragens, realizando foleys e edição de som como assistente do sound designer Edson Secco. (Foto/Crédito: Beatriz Moura.

  17. Sensibilidade de estirpes de Bradyrhizobium ao glyphosate

    Directory of Open Access Journals (Sweden)

    Rodrigo Josemar Seminoti Jacques

    2010-02-01

    Full Text Available A aplicação do glyphosate sobre a soja resistente a este herbicida pode causar prejuízos à simbiose com o rizóbio. O objetivo deste trabalho foi avaliar a sensibilidade ao herbicida glyphosate de três estirpes de Bradyrhizobium recomendadas para a produção de inoculantes de sementes de soja no Brasil. Avaliou-se o efeito das concentrações de 0,0; 5,4; 10,8; 21,6 e 43,2 µg L-1 do ingrediente ativo do glyphosate [N-(fosfonometil glicina] no meio YM líquido sobre o crescimento de B. japonicum (estirpe SEMIA 5079 e de B. elkanii (estirpe SEMIA 5019 e estirpe SEMIA 587, por meio de leituras das densidades óticas e geração de curvas de crescimento. As reduções de crescimento na presença da menor concentração do glyphosate foram de 18% para SEMIA 5079, 29% para SEMIA 5019 e de 35% para SEMIA 587, sendo, de modo geral, quanto maior a concentração do herbicida no meio de cultura maior a inibição do crescimen­to. As estirpes apresentaram sensibilidade diferencial somente às concentrações mais baixas do glyphosate; nesse caso, foi possível determinar a seguinte ordem de sensibilidade: SEMIA 587 > SEMIA 5019 > SEMIA 5079. Essa sensibilidade diferencial é dependente da concentração do herbicida, pois na presença de 43,2 µg L-1 todas as estirpes tiveram seu crescimento severamente reduzido, não havendo diferença entre elas.

  18. The emission spectra of Ar, Kr and Xe + TEA

    Science.gov (United States)

    Suzuki, Masayo; Strock, Pierre; Sauli, Fabio; Charpak, Georges

    1987-03-01

    The emission spectra of Ar, Kr and Xe + 6% TEA gas mixtures are measured by using a single wire proportional counter as the emission source. Asymmetric emission bands are observed in the range of 270 to 350 nm, which can be attributed to the radiative deexcitation of excited TEA molecules. For the practical application of optical readout of avalanche chambers, the Ar + 2.0% TEA + 20% isobutane gas mixture is also examined, and nearly the same emission band is observed.

  19. Gestão ambiental nas empresas de capital aberto do segmento ‘Novo Mercado’: discutindo a homogeneidade e heterogeneidade de práticas à luz da teoria institucional [doi: 10.5329/RECADM.20121102003

    Directory of Open Access Journals (Sweden)

    Vivianne Pereira Salas Roldan

    2012-11-01

    Full Text Available O objetivo geral deste estudo foi analisar o comportamento das empresas de capital aberto, do segmento ‘Novo Mercado’ da BM&FBovespa, quanto à adoção de práticas de gestão ambiental, à luz da teoria institucional. Em síntese, os objetivos específicos da pesquisa analisam a tendência para a homogeneidade e heterogeneidade de práticas ambientais das empresas, sua relação com a abordagem de gestão ambiental e com as pressões ambientais evidenciadas, dando destaque especial para o setor de Construção. É uma pesquisa descritiva, bibliográfica e documental, de abordagem quantitativa. Os dados foram obtidos a partir dos websites e relatórios anuais das empresas, de 2009 e 2010. Constatou-se que 66,7% das 123 empresas do Novo Mercado adotam práticas ambientais. Quanto à abordagem de gestão ambiental, 58,5% dessas empresas são proativas, 28% reativas, e 13,4% preventivas. Verificou-se que quanto mais proativa a abordagem de gestão ambiental, mais diversificadas são as pressões ambientais, e maior é a possibilidade de existir isomorfismo entre as empresas quanto à adoção de práticas sustentáveis, assim como heterogeneidade. Na análise do setor de construção, constatou-se essas possibilidades destacadas, sendo as práticas homogêneas e heterogêneas desse campo detalhadas e discutidas no estudo.   Palavras-chave Teoria institucional, Pressões ambientais, Gestão Ambiental.     ENVIRONMENTAL MANAGEMENT OF COMPANIES OF THE SEGMENT 'NEW MARKET': DISCUSSING THE HOMOGENEITY AND HETEROGENEITY OF PRACTICES IN LIGHT OF INSTITUTIONAL THEORY   ABSTRACT The aim of this study was to analyze the behavior of companies of the segment 'New Market' BM&FBovespa, on the adoption of environmental management practices in light of institutional theory. In summary, the specific objectives of the research analyzing the trend toward homogeneity and heterogeneity of environmental practices of firms, their relationship with the approach

  20. Robo-AO: Performance and Characterization at Palomar Observatory

    Science.gov (United States)

    Tendulkar, Shriharsh P.; Baranec, C.; Riddle, R. L.; Ramaprakash, A. N.; Law, N. M.; Kulkarni, S. R.; Dekany, R.; Bui, K.; Davis, J.; Burse, M.; Das, H.; Punnadi, S.; Chordia, P.

    2013-01-01

    Hosted at the Palomar 60-inch telescope, Robo-AO is the world's first completely autonomous, laser-beacon supported adaptive optics (AO) system, delivering diffraction-limited images in the visible and IR wavelengths. With simultaneous turbulence monitoring using a MASS-DIMM instrument, we have characterized the performance of Robo-AO as a function of local seeing, turbulence profile, laser return power and the brightness of the tip-tilt star. We shall present the various AO metrics: The full-width at half maxima of the point spread function, the Strehl ratio, the isoplanatic angle and their variations with the atmospheric and operating conditions. Strategies for optimizing robotic AO observations based on varying conditions will be discussed.

  1. Arsénico en el agua de bebida: un problema de salud pública Arsênio na água de beber: um problema de saúde pública

    Directory of Open Access Journals (Sweden)

    Alexandra Galetovic Carabantes

    2003-12-01

    Full Text Available La presencia de arsénico en el ambiente es un problema de salud pública debido a que se trata de un evento de alta frecuencia que ha sido detectado en países como Argentina, Brasil, Chile, China, India, México y Taiwán, entre otros. El arsénico fue clasificado por la International Agency for Research on Cancer (IARC, como un agente carcinogénico para humanos con base en estudios epidemiológicos que relacionan la ingestión de arsénico en el agua de bebida y cáncer en la piel y estudios ocupacionales que relacionan la exposición al arsénico y cáncer de pulmón. La Organización Mundial de la Salud (OMS recomienda um valor orientador para agua de bebida de 10 mg As/L. Por su parte la Environmental Protection Agency (EPA, considerando estimativas de riesgo realizadas utilizando modelos estadísticos basados en observaciones en humanos y extrapolando los datos para concentraciones inferiores a 50 µg/L, reducirá el valor guía para arsénico en el agua de bebida de 50 µg/L para 10 µg/L. La utilización de biomarcadores permite el desarrollo de la epidemiología molecular que promete ser una herramienta que ayudará a detectar efectos tempranos en poblaciones expuestas, permitiendo la prevención de efectos nocivos considerando las características genéticas de las poblaciones.A presença de arsênio no ambiente é um problema de saúde pública por ser um evento de alta freqüência detectado em países como Argentina, Brasil, Chile, China, Índia, México e Taiwan, entre outros. O arsênio foi classificado pela Agência Internacional de Pesquisa sobre Câncer (IARC, como um agente carcinogênico para humanos com base em estudos epidemiológicos que relacionam a ingestão de arsênico na água para consumo humano e câncer na pele e estudos ocupacionais que relacionam a exposição ao arsênico e câncer no pulmão.A Organização Mundial da Saúde (OMS recomenda um valor orientador para água de beber de 10 mg As/L, enquanto que a

  2. Correlação e correspondência topográfica entre espessura da camada de fibras nervosas da retina e campo visual no glaucoma primário de ângulo aberto Correlation and topographic match between nerve fiber layer thickness and visual field in primary open angle glaucoma

    Directory of Open Access Journals (Sweden)

    Paula Boturão de Almeida

    2001-04-01

    Full Text Available Objetivo: Verificar a correlação e a correspondência topográfica entre a espessura da camada de fibras nervosas da retina, medidas pelo polarímetro de varredura a laser GDxTM Scanning Laser System® e o campo visual, medido pelo perímetro automatizado Humphrey® ("white-white" em portadores de glaucoma primário de ângulo aberto. Métodos: Foram investigadas as seguintes correlações: 1- Correlação entre a média da sensibilidade dos quadrantes e do ponto de fixação do campo visual, em decibéis, e a média da espessura da camada de fibras nervosas da retina correspondente, em micra, sem classificação dos olhos dos pacientes quanto ao estadio do comprometimento perimétrico. 2- A mesma correlação anterior, porém, com os olhos dos pacientes distribuídos em classes quanto à alteração perimétrica. 3- Correlação entre os índices globais do campo visual e os índices numéricos do analisador de espessura da camada de fibras nervosas da retina. 4- Correlação entre a média dos valores do gráfico "total deviation" do campo visual e o desvio da normalidade da camada de fibras nervosas da região correspondente. 5- Investigou-se a freqüência de correspondência topográfica entre os defeitos perimétricos e as alterações da camada de fibras nervosas da retina. Utilizou-se o coeficiente de correlação de Spearman, sendo o nível de rejeição para a hipótese de nulidade fixado num valor menor ou igual a 0,05 (5%. Resultados: Observou-se as seguintes correlações estatisticamentes significantes, mas de forma muito pouco intensa: 1- GDX total e Campo visual total; GDX superior e Campo visual nasal inferior; GDX inferior e Campo visual nasal superior; GDX nasal e Campo visual temporal; GDX superior e Campo visual inferior; GDX inferior e Campo visual superior. 2- GDX inferior e Campo visual nasal (medial superior dos pacientes classificados como graves. 3- Nos olhos classificados como normais: PSD e EM; CPSD e SI.Nos olhos

  3. TEMPERATURA DO AR NO INTERIOR DO CANAL DE CULTIVO E CRESCIMENTO DA ALFACE EM FUNÇÃO DO MATERIAL DE COBERTURA DA MESA DE CULTIVO HIDROPÔNICO - NFT

    Directory of Open Access Journals (Sweden)

    MATTOS KAREN MARIA DA COSTA

    2001-01-01

    Full Text Available Estudou-se o efeito de diferentes tipos de material de cobertura de mesas de cultivo hidropônico-NFT na temperatura do interior das canaletas e no crescimento da alface (Lactuca sativa L., cv. Verônica. Em comparação ao tratamento-controle (tubos de polipropileno, utilizaram-se mantas de polietileno dupla face (branco e preto e de Tetra-Pak®. O experimento foi realizado no Núcleo Experimental de Campinas, do Instituto Agronômico (22°54'S, 47°05'W, 674 m de altitude, usando-se mesas de cultivo com 24 m de comprimento, dividida em quatro blocos simétricos com os tratamentos distribuídos ao acaso. Sessenta termopares foram instalados no interior dos tubos para avaliar a temperatura interna do ar; armazenaram-se os sinais em um datalogger. Os valores medidos no interior dos tubos foram sempre superiores aos externos. Entretanto, nos tubos protegidos com Tetra-Pak®, os dados da temperatura interna do ar foram sempre de menor magnitude e, os de massa fresca de plantas de alface, superiores aos demais tratamentos. Essas diferenças foram estatisticamente significativas pelo teste de Tukey ao nível de 5%. No período noturno, nenhuma diferença de comportamento foi obtida entre os três tratamentos usados.

  4. /sup 40/Ar-/sup 39/Ar dating of melt rock from impact craters

    Energy Technology Data Exchange (ETDEWEB)

    Bottomley, R.J.

    1982-01-01

    Meteorite impacts produce large volumes of shocked and brecciated rocks near the impact site. If the impact is large enough, target rocks will be fused to form melt rock which often pools on the crater floor. This melt rock will typically have a fine grained matrix enclosing heated but unmelted clasts of broken country rock. A suite of melt rocks from fifteen craters along with shocked rock from one crater and three tektites were analyzed by 40Ar-39Ar dating to study the argon systematics of melted and shocked rocks and to determine the time of impact which formed the craters. The age spectra from most of the melt rock samples turned out to be more complex than expected. The spectra could be classified into four families: 1) good plateaux; 2) structured plateaux; 3) stepwise rising spectra; and 4) snail shape spectra. In most cases an age based on one or both of these factors could be made of the non-plateau spectra. However the meaning of the resulting age is less certain than in the good plateaux cases. On the basis of their age, either of two Canadian craters, Wanapitei or Mistastin, could be comtemporaneous with the formation of the bediasites, raising the possibility that more than one impact was responsible for North American tektite strewnfield. In addition, there appears to be evidence that there was a higher than average incidence of impacts about 35 m.y. ago. During sample fusion, melt rocks release a greater proportion of their argon below 800/sup 0/C than do most terrestrial whole rocks.

  5. Non-Adiabatic Dynamics of ICN-(Ar)n and BrCN-(Ar)n

    Science.gov (United States)

    Opoku-Agyeman, Bernice; McCoy, Anne B.

    2016-06-01

    We investigate the dynamics of the photodissociation of ICN-(Ar)n and BrCN-(Ar)n following electronic excitation to states that dissociate into X- + CN and X* + CN- (X = I or Br) using classical dynamics approaches. Observations made from previous experiments and calculations of these anions demonstrated that non-adiabatic effects are important in the photodissociation process and are reflected in the branching ratios of the photoproducts. The addition of an argon atom is expected to shift the relative energies of these excited states, thereby altering the product branching. Interestingly, experimental studies show that electronically exciting ICN- solvated with even a single argon atom leads to a small fraction of the products recombine to form ICN-.a In this study, the dynamics are carried out using classical mechanics, treating the non-adiabatic effect with a surface hopping algorithm. We assess the accuracy of this approach by first calculating the branching ratios for the bare anions and comparing the results to those from quantum dynamics calculations.a,b Once the results from both the quantum and classical dynamics are shown to be consistent, the classical dynamics simulations are extended to the argon solvated anions. S. Case, E. M. Miller, J. P. Martin, Y. J. Lu, L. Sheps, A. B. McCoy, and W. C. Lineberger, Angew. Chem., Int. Ed. 51, 2651 (2012). B. Opoku-Agyeman, A. S. Case, J. H. Lehman, W. Carl Lineberger and A. B. McCoy, J. Chem Phys. 141, 084305 (2014). J. C. Tully, J. Chem Phys. 93, 1061 (1990).

  6. Ar-Ar Analysis of Chelyabinsk: Evidence for a Recent Impact

    Science.gov (United States)

    Beard, S. P.; Kring, D. A.; Isachsen, C. E.; Lapen, T. J.; Zolensky, M. E.; Swindle, T. D.

    2014-01-01

    The Chelyabinsk meteorite is an LL5 ordinary chondrite that fell as a spectacular fireball on February 15th, 2013, over the Ural region in Russia. The meteoroid exploded at an altitude of 25-30 km, producing shockwaves that broke windowpanes in Chelyabinsk and surrounding areas, injuring some 1500 people. Analyses of the samples show that the meteorite underwent moderate shock metamorphism (stage S4; 25-35 GPa) [1]. Most of the samples have a fusion crust ranging from 0.1-1mm thick, and roughly a third of the samples were composed of a dark fine-grained impact melt with chondrule fragments which were targeted for chronometry. A Pb-Pb age obtained by [2] of a shock-darkened and potentially melted sample of Chelyabinsk is reported as 4538.3 +/- 2.1 Ma, while a U-Pb study [3] gave an upper concordia intercept of 4454 +/- 67 Ma and a lower intercept of 585 +/- 390. Galimov et al. 2013 [1] suggest the Sm-Nd system records a recent impact event [290 Ma] that may represent separation from the parent body, while the Rb-Sr isotopic system is disturbed and does not give any definitive isochron. In order to better understand its history, we have performed 40Ar-39Ar analysis on multiple splits of two Chelyabinsk samples; clast- rich MB020f,2 and melt-rich MB020f,5. The term "clast-rich" lithology is meant to indicate a mechanical mixture of highly shock-darkened and less shocked components, both with some shock melt veining.

  7. The path to visible extreme adaptive optics with MagAO-2K and MagAO-X

    Science.gov (United States)

    Males, Jared R.; Close, Laird M.; Guyon, Olivier; Morzinski, Katie M.; Hinz, Philip; Esposito, Simone; Pinna, Enrico; Xompero, Marco; Briguglio, Runa; Riccardi, Armando; Puglisi, Alfio; Mazin, Ben; Ireland, Michael J.; Weinberger, Alycia; Conrad, Al; Kenworthy, Matthew; Snik, Frans; Otten, Gilles; Jovanovic, Nemanja; Lozi, Julien

    2016-07-01

    The next generation of extremely large telescopes (ELTs) have the potential to image habitable rocky planets, if suitably optimized. This will require the development of fast high order "extreme" adaptive optics systems for the ELTs. Located near the excellent site of the future GMT, the Magellan AO system (MagAO) is an ideal on-sky testbed for high contrast imaging development. Here we discuss planned upgrades to MagAO. These include improvements in WFS sampling (enabling correction of more modes) and an increase in speed to 2000 Hz, as well as an H2RG detector upgrade for the Clio infrared camera. This NSF funded project, MagAO-2K, is planned to be on-sky in November 2016 and will significantly improve the performance of MagAO at short wavelengths. Finally, we describe MagAO-X, a visible-wavelength extreme-AO "afterburner" system under development. MagAO-X will deliver Strehl ratios of over 80% in the optical and is optimized for visible light coronagraphy.

  8. Combined U-Th/He and 40Ar/ 39Ar geochronology of post-shield lavas from the Mauna Kea and Kohala volcanoes, Hawaii

    Science.gov (United States)

    Aciego, S. M.; Jourdan, F.; DePaolo, D. J.; Kennedy, B. M.; Renne, P. R.; Sims, K. W. W.

    2010-03-01

    Late Quaternary, post-shield lavas from the Mauna Kea and Kohala volcanoes on the Big Island of Hawaii have been dated using the 40Ar/ 39Ar and U-Th/He methods. The objective of the study is to compare the recently demonstrated U-Th/He age method, which uses basaltic olivine phenocrysts, with 40Ar/ 39Ar ages measured on groundmass from the same samples. As a corollary, the age data also increase the precision of the chronology of volcanism on the Big Island. For the U-Th/He ages, U, Th and He concentrations and isotopes were measured to account for U-series disequilibrium and initial He. Single analyses U-Th/He ages for Hamakua lavas from Mauna Kea are 87 ± 40 to 119 ± 23 ka (2 σ uncertainties), which are in general equal to or younger than 40Ar/ 39Ar ages. Basalt from the Polulu sequence on Kohala gives a U-Th/He age of 354 ± 54 ka and a 40Ar/ 39Ar age of 450 ± 40 ka. All of the U-Th/He ages, and all but one spurious 40Ar/ 39Ar ages conform to the previously proposed stratigraphy and published 14C and K-Ar ages. The ages also compare favorably to U-Th whole rock-olivine ages calculated from 238U- 230Th disequilibria. The U-Th/He and 40Ar/ 39Ar results agree best where there is a relatively large amount of radiogenic 40Ar (>10%), and where the 40Ar/ 36Ar intercept calculated from the Ar isochron diagram is close to the atmospheric value. In two cases, it is not clear why U-Th/He and 40Ar/ 39Ar ages do not agree within uncertainty. U-Th/He and 40Ar/ 39Ar results diverge the most on a low-K transitional tholeiitic basalt with abundant olivine. For the most alkalic basalts with negligible olivine phenocrysts, U-Th/He ages were unattainable while 40Ar/ 39Ar results provide good precision even on ages as low as 19 ± 4 ka. Hence, the strengths and weaknesses of the U-Th/He and 40Ar/ 39Ar methods are complimentary for basalts with ages of order 100-500 ka.

  9. Combined U-Th/He and 40Ar/39Ar geochronology of post-shield lavas from the Mauna Kea and Kohala volcanoes, Hawaii

    Energy Technology Data Exchange (ETDEWEB)

    Aciego, S.M.; Jourdan, F.; DePaolo, D.J.; Kennedy, B.M.; Renne, P.R.; Sims, K.W.W.

    2009-10-01

    Late Quaternary, post-shield lavas from the Mauna Kea and Kohala volcanoes on the Big Island of Hawaii have been dated using the {sup 40}Ar/{sup 39}Ar and U-Th/He methods. The objective of the study is to compare the recently demonstrated U-Th/He age method, which uses basaltic olivine phenocrysts, with {sup 40}Ar/{sup 39}Ar ages measured on groundmass from the same samples. As a corollary, the age data also increase the precision of the chronology of volcanism on the Big Island. For the U-Th/He ages, U, Th and He concentrations and isotopes were measured to account for U-series disequilibrium and initial He. Single analyses U-Th/He ages for Hamakua lavas from Mauna Kea are 87 {+-} 40 ka to 119 {+-} 23 ka (2{sigma} uncertainties), which are in general equal to or younger than {sup 40}Ar/{sup 39}Ar ages. Basalt from the Polulu sequence on Kohala gives a U-Th/He age of 354 {+-} 54 ka and a {sup 40}Ar/{sup 39}Ar age of 450 {+-} 40 ka. All of the U-Th/He ages, and all but one spurious {sup 40}Ar/{sup 39}Ar ages conform to the previously proposed stratigraphy and published {sup 14}C and K-Ar ages. The ages also compare favorably to U-Th whole rock-olivine ages calculated from {sup 238}U - {sup 230}Th disequilibria. The U-Th/He and {sup 40}Ar/{sup 39}Ar results agree best where there is a relatively large amount of radiogenic {sup 40}Ar (>10%), and where the {sup 40}Ar/{sup 36}Ar intercept calculated from the Ar isochron diagram is close to the atmospheric value. In two cases, it is not clear why U-Th/He and {sup 40}Ar/{sup 39}Ar ages do not agree within uncertainty. U-Th/He and {sup 40}Ar/{sup 39}Ar results diverge the most on a low-K transitional tholeiitic basalt with abundant olivine. For the most alkalic basalts with negligible olivine phenocrysts, U-Th/He ages were unattainable while {sup 40}Ar/{sup 39}Ar results provide good precision even on ages as low as 19 {+-} 4 ka. Hence, the strengths and weaknesses of the U-Th/He and {sup 40}Ar/{sup 39}Ar methods are

  10. Exhumation history of the NW Indian Himalaya revealed by fission track and 40Ar/39Ar ages

    Science.gov (United States)

    Schlup, M.; Steck, A.; Carter, A.; Cosca, M.; Epard, J.-L.; Hunziker, J.

    2011-01-01

    New fission track and Ar/Ar geochronological data provide time constraints on the exhumation history of the Himalayan nappes in the Mandi (Beas valley) - Tso Morari transect of the NW Indian Himalaya. Results from this and previous studies suggest that the SW-directed North Himalayan nappes were emplaced by detachment from the underthrusted upper Indian crust by 55. Ma and metamorphosed by ca. 48-40. Ma. The nappe stack was subsequently exhumed to shallow upper crustal depths (Elsevier Ltd.

  11. Exhumation history of the NW Indian Himalaya revealed by fission track and 40Ar/39Ar ages

    Science.gov (United States)

    Schlup, Micha; Steck, Albrecht; Carter, Andrew; Cosca, Michael; Epard, Jean-Luc; Hunziker, Johannes

    2011-01-01

    New fission track and Ar/Ar geochronological data provide time constraints on the exhumation history of the Himalayan nappes in the Mandi (Beas valley) — Tso Morari transect of the NW Indian Himalaya. Results from this and previous studies suggest that the SW-directed North Himalayan nappes were emplaced by detachment from the underthrusted upper Indian crust by 55 Ma and metamorphosed by ca. 48–40 Ma. The nappe stack was subsequently exhumed to shallow upper crustal depths (

  12. 40Ar-39Ar age of a lava flow from the Bhimashankar Formation, Giravali Ghat, Deccan Traps

    Indian Academy of Sciences (India)

    Kanchan Pande; S K Pattanayak; K V Subbarao; P Navaneethakrishnan; T R Venkatesan

    2004-12-01

    We report here a 40Ar-39Ar age of 66.0 ± 0.9Ma (2 ) for a reversely magnetised tholeiitic lava flow from the Bhimashankar Formation (Fm.), Giravali Ghat, western Deccan province, India. This age is consistent with the view that the 1.8–2km thick bottom part of the exposed basalt flow sequence in the Western Ghats was extruded very close to 67.4 Ma.

  13. Amando de olhos abertos: Emma Goldman e o dissenso político nos EUA Loving with open eyes: Emma Goldman and the political dissent in the Unites States

    Directory of Open Access Journals (Sweden)

    Cecilia Azevedo

    2007-12-01

    Full Text Available Este artigo apresenta a trajetória de Emma Goldman, grande nome do anarquismo, pacifismo e feminismo nos EUA, procurando apresentá- la como uma representante da chamada tradição de dissenso neste país que, ao longo de toda sua história, tem disputado os sentidos a serem atribuídos aos ideais nacionais. Em meio à atual guerra no Iraque, a memória e o legado de Emma Goldman vêm sendo recuperados no embate político em torno do sentido do americanismo.This article presents the life of Emma Goldman, who played a central role in the history of anarchism, pacifism and feminism in the United States. In the present days, when a new war is taking place in Iraq, the memory and legacy of Emma Goldman are being reassessed amidst the debate over the political meaning of Americanism.

  14. Suscetibilidade do capim-colonião e de cultivares de milho ao flúor

    Directory of Open Access Journals (Sweden)

    Rimena Ramos Domingues

    2011-01-01

    Full Text Available A emissão de fluoretos à atmosfera oriunda da produção de superfosfatos e de cerâmica tem causado preocupação pelo efeito tóxico às plantas, contudo são poucos os estudos desenvolvidos acerca do problema com espécie de interesse econômico agrícola. Desenvolveu-se o estudo para avaliar o efeito do flúor (F atmosférico em plantas de capim-colonião e de cultivares de milho, utilizando como referência espécies bioindicadoras do tipo sensível e tolerante. As plantas foram expostas à contaminação pelo F atmosférico por curtos períodos durante 32 dias em sistema de nebulização com 0,16 mol L-1 de ácido fluorídrico no ambiente interno de uma câmara (~0,20 mmol m-3 de F, havendo um controle não exposto, com quatro repetições. A exposição das plantas ao F causou aumento da concentração do elemento nas folhas até 60 mg kg-1 para o capim-colonião, e entre 100 mg kg-1 nas folhas novas e 170 mg kg-1 nas folhas velhas para quatro cultivares de milho, o que demonstrou o efeito cumulativo do elemento no ambiente. Sintomas visuais da toxicidade foram observados nas plantas e se caracterizaram pela ocorrência de cloroses e necroses na lâmina foliar. O capim-colonião é uma espécie bastante sensível ao poluente no ar. As cultivares de milho DKB 390 e Ômega 8315 também são mais sensíveis ao F quando comparadas às AG7088 e 2B707. Os teores de clorofila a nas plantas foram mais afetados pelo F em relação aos teores de clorofila b.

  15. The mass of sup 3 sup 2 Ar and sup 3 sup 3 Ar for fundamental tests

    CERN Document Server

    Blaum, K; Beck, D; Bollen, G; Herfurth, F; Kellerbauer, A G; Kluge, H J; Sauvan, E; Schwarz, S

    2003-01-01

    Masses of the short-lived radionuclides sup 3 sup 2 Ar (T sub 1 sub / sub 2 = 98 ms) sup 3 sup 3 Ar (T sub 1 sub / sub 2 = 173 ms) have been determined with the Penning trap mass spectrometer ISOLTRAP. Relative uncertainties of 6.0 x 10 sup - sup 8 (delta m = 1.8 keV) and 1.4 x 10 sup - sup 8 (delta m = 0.44 keV), respectively, have been achieved. At present, these new mass data serve as the most stringent test of the quadratic form of the isobaricmultiplet mass equation IMME. Furthermore, the improved accuracy for the mass of sup 3 sup 2 Ar yields a better constraint on scalar contributions to the weak interaction. New mass values have also been measured for sup 4 sup 4 Ar and sup 4 sup 5 Ar, and a 20 sigma deviation for sup 4 sup 4 Ar from the literature value was found and interpreted.

  16. Ar-40/Ar-39 Ages for Maskelynites and K-Rich Melt from Olivine-Rich Lithology in (Kanagawa) Zagami

    Science.gov (United States)

    Park, J.; Herzog, G. F.; Nyquist, L. E.; Lindsay, F.; Turrin, B.; Swisher, C. C., III; Delaney, J. S.; Shih, C.-Y.; Niihara, T.; Misawa, K.

    2013-01-01

    We report Ar/Ar release patterns for small maskelynite grains and samples of a K-rich phase separated from the basaltic shergottite Zagami. The purpose of the work is to investigate the well-known discrepancy between published Ar/Ar ages of Zagami, >200 Ma, and its age of approx. 170 Ma as determined by other methods [1-6]. Niihara et al. [7] divide less abundant darker material present in Zagami into an olivine-rich lithology (ORL), from which most of our samples came, and a pyroxene-rich one (Dark Mottled-Lithology: DML) [8, 9]. ORL consists of vermicular fayalitic olivine, coarse-grained pyroxene, maskelynite, and a glassy phase exceptionally rich in K (up to 8.5 wt%), Al, and Si, but poor in Fe and Mg. The elemental composition suggests a late-stage melt, i.e., residual material that solidified late in a fractional crystallization sequence. Below we refer to it as "K-rich melt." The K-rich melt contains laths of captured olivine, Ca-rich pyroxene, plagioclase, and opaques. It seemed to offer an especially promising target for Ar-40/Ar-39 dating.

  17. Cuidados de enfermagem ao paciente que retornou à circulação espontânea após uma parada cardiorrespiratória : o saber, o fazer e o sentir do enfermeiro

    OpenAIRE

    Lisboa, Nayara da Silva

    2014-01-01

    Nos últimos anos, os cuidados pós-PCR estão sendo enfatizados pelos protocolos internacionais. O enfermeiro tem importante papel nessa assistência, devendo alicerçar seus cuidados em um saber técnico-científico, dentro de um relacionamento terapêutico. Objetiva-se, nesta pesquisa, estudar e compreender o saber, o fazer e o sentir dos enfermeiros nos cuidados ao paciente que sofreu PCR e retornou ao ritmo cardíaco espontâneo. Trata-se de um estudo exploratório-descritivo misto, composto de dua...

  18. Optical Emission Spectroscopic Studies of ICP Ar Plasma

    Institute of Scientific and Technical Information of China (English)

    QI Xuelian; REN Chunsheng; ZHANG Jian; MA Tengcai

    2007-01-01

    The ion line of 434.8 nm and atom line of 419.8 nm of Ar plasma produced by an inductively coupled plasma (ICP) were measured by optical emission spectroscopy and the influences from the working gas pressure, radio-frequency (RF) power and different positions in the discharge chamber on the line intensities were investigated in this study. It was found that the intensity of Ar atom line increased firstly and then saturated with the increase of the pressure. The line intensity of Ar+, on the other hand, reached a maximum value and then decreased along with the pressure. The intensity of the line in an RF discharge also demonstrated a jumping mode and a hysteresis phenomenon with the RF power. When the RF power increased to 400 W, the discharge jumped from the E-mode to the H-mode where the line intensity of Ar atom demonstrated a sudden increase, while the intensity of Ar+ ion only changed slightly. If the RF power decreased from a high value, e.g., 1000 W, the discharge would jump from the H-mode back to the E-mode at a power of 300 W. At this time the intensities of Ar and Ar+ lines would also decrease sharply. It was also noticed in this paper that the intensity of the ion line depended on the detective location in the chamber, namely at the bottom of the chamber the line was more intense than that in the middle of the chamber, but less intense than at the top, which is considered to be related to the capacitance coupling ability of the ICP plasma in different discharge areas.

  19. Acoustic Resonance Spectroscopy (ARS) Munition Classification System enhancements. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Vela, O.A.; Huggard, J.C.

    1997-09-18

    Acoustic Resonance Spectroscopy (ARS) is a non-destructive evaluation technology developed at the Los Alamos National Laboratory (LANL). This technology has resulted in three generations of instrumentation, funded by the Defense Special Weapons Agency (DSWA), specifically designed for field identification of chemical weapon (CW) munitions. Each generation of ARS instrumentation was developed with a specific user in mind. The ARS1OO was built for use by the U.N. Inspection Teams going into Iraq immediately after the Persian Gulf War. The ARS200 was built for use in the US-Russia Bilateral Chemical Weapons Treaty (the primary users for this system are the US Onsite Inspection Agency (OSIA) and their Russian counterparts). The ARS300 was built with the requirements of the Organization for the Prohibition of Chemical Weapons (OPCW) in mind. Each successive system is an improved version of the previous system based on learning the weaknesses of each and, coincidentally, on the fact that more time was available to do a requirements analysis and the necessary engineering development. The ARS300 is at a level of development that warrants transferring the technology to a commercial vendor. Since LANL will supply the computer software to the selected vendor, it is possible for LANL to continue to improve the decision algorithms, add features where necessary, and adjust the user interface before the final transfer occurs. This paper describes the current system, ARS system enhancements, and software enhancements. Appendices contain the Operations Manual (software Version 3.01), and two earlier reports on enhancements.

  20. Pneumonite de hipersensibilidade ao tabaco Hypersensitivity pneumonitis to tobacco

    Directory of Open Access Journals (Sweden)

    SÍLVIA E.C. MACEDO

    2001-01-01

    Full Text Available Pneumonite de hipersensibilidade (PH é decorrente da inalação de antígenos orgânicos e/ou inorgânicos por indivíduos suscetíveis. Relata-se o caso de uma mulher de 18 anos, plantadora de tabaco em Pelotas, no Sul do Brasil, com dispnéia progressiva, tosse seca e emagrecimento havia 35 dias. Apresentava crepitações finas no tórax e a radiografia evidenciou infiltrado intersticial difuso. O diagnóstico de PH foi estabelecido pela história de exposição, achados tomográficos e exame anatomopatológico de pulmão obtido por biópsia a céu aberto. Estabeleceram-se como causa antígenos provenientes do cultivo de tabaco. Com prednisona e o afastamento do plantio do tabaco houve boa resposta clínica e funcional.Hypersensitivity pneumonitis (HP derives from the inhalation of organic and/or inorganic antigens by susceptible individuals. The authors report the case of an eighteen-year-old female, who worked as a tobacco planter in Pelotas, southern Brazil. She had been presenting progressive dyspnea, dry cough, and weight loss for 35 days. She had fine thoracic crepitations and X-ray examination revealed diffuse interstitial infiltration. The diagnosis of HP was determined by her history of exposure to tobacco, tomographic findings and anatomopathologic examination of the lung, obtained by open biopsy. Tobacco antigens were found to be the cause. As patient was treated with prednisone and tobacco exposure was discontinued, a good clinic and functional response was observed.

  1. The Robo-AO automated intelligent queue system

    Science.gov (United States)

    Riddle, Reed L.; Hogstrom, Kristina; Papadopoulos, Athanasios; Baranec, Christoph; Law, Nicholas M.

    2014-07-01

    Robo-AO is the first automated laser adaptive optics instrument. In just its second year of scientific operations, it has completed the largest adaptive optics surveys to date, each comprising thousands of targets. Robo-AO uses a fully automated queue scheduling system that selects targets based on criteria entered on a per observing program or per target basis, and includes the ability to coordinate with US Strategic Command automatically to avoid lasing space assets. This enables Robo-AO to select among thousands of targets at a time, and achieve an average observation rate of approximately 20 targets per hour.

  2. The Robo-AO automated intelligent queue system

    CERN Document Server

    Riddle, Reed L; Papadopoulos, Athanasios; Baranec, Christoph; Law, Nicholas M

    2014-01-01

    Robo-AO is the first automated laser adaptive optics instrument. In just its second year of scientific operations, it has completed the largest adaptive optics surveys to date, each comprising thousands of targets. Robo-AO uses a fully automated queue scheduling system that selects targets based on criteria entered on a per observing program or per target basis, and includes the ability to coordinate with US Strategic Command automatically to avoid lasing space assets. This enables Robo-AO to select among thousands of targets at a time, and achieve an average observation rate of approximately 20 targets per hour.

  3. Secagem de folhas Mentha piperita em leito fixo utilizando diferentes temperaturas e velocidades de ar

    Directory of Open Access Journals (Sweden)

    Priscila Pigatto Gasparin

    Full Text Available RESUMO A espécie Mentha piperita, conhecida popularmente como hortelã pimenta além de ser uma planta medicinal, é utilizada nas indústrias farmacêutica, alimentícia e cosmética. Desta forma, o processo de secagem se faz necessário para aumentar o tempo de conservação e vida útil do produto facilitando seu transporte, manuseio e armazenamento. Para que os derivados do hortelã tenham qualidade, é necessário estudos sobre a pré e a pós-colheita. Objetivou-se neste estudo a avaliação de secagem, e para a obtenção das curvas foram utilizadas as temperaturas no intervalo de 30 a 70 ºC com variação da velocidade do ar de secagem 0,3 e 0,5 m.s-1. Para a realização da secagem das folhas, foi utilizado um secador de leito fixo em escala de laboratório, que possui um ventilador para a movimentação do ar e sistema de aquecimento. Os resultados evidenciaram que o modelo de Midili é o que melhor se ajusta aos dados experimentais. A relação do coeficiente de difusão com a temperatura de secagem pode ser descrita pela equação de Arrhenius, apresentando uma energia de ativação para velocidade 0,3 m.s-1 68,42 KJ mol-1 e para velocidade 0,5 m.s-1 78,27 KJ mol-1.

  4. 40Ar/39Ar dating of the Honghuaqiao Formation in SE China

    Science.gov (United States)

    Chang, S.; Zhang, H.; Hemming, S. R.; Mesko, G. T.; Fang, Y.

    2010-12-01

    The Jehol Biota, defined as the characteristic Eosestheria-Ephemeropsis-Lycoptera assemblage (Grabau, 1923, Bulletin of the Geological Survey of China), is widely distributed in eastern and central Asia (Li et al., 1982, Acta Geologica Sinica; Chen, 1988, Acta Palaeontologica Sinica). Abundant and varied fossils of the terrestrial Jehol Biota, including plants, insects, dinosaurs, birds, mammals, and freshwater invertebrates, have been discovered from the Dabeigou, the Yixian and the Jiufotang Formations (or their correlative strata) in northeast China from the Liaoning and Hebei Provinces and Inner Mongolia (Chen and Jin, 1999, Acta Palaeontologica Sinica). In addition, strata that may be correlative with the classic Jehol fossil-bearing formations have been identified extensively in central and eastern China, the Korean Peninsula, Mongolia, and Siberia. In the past three decades mollusk, conchostracan, ostracod, insect, fish, and plant fossils from localities in southeastern China, interpreted as related to the Jehol biota of the northeast, have been found (Mateer and Chen, 1986, Cretaceous Research; Li, 2003, Chinese Science Bulletin; Chen, Li and Batten, 2007, Geological Journal). However, a detailed correlation between the classic Jehol outcrops and the more recently found localities to the South and West has yet to emerge. Volcanic rocks from the Honghuaqiao fossil-bearing Formation in Tuzhou City of eastern Anhui Province, southeastern China provide an excellent opportunity to rectify this situation. Preliminary results of a pilot study suggest that the Honghuaqiao Formation is equivalent to the Longwanshan Formation of Anhui Province, southeastern China and the Yixian Formation, northeastern China (Chang et al., 2009, AGU abstract). Initial 40Ar/39Ar results indicate that conchostracans from the upper Honghuaqiao Formation are approximately 130 Ma. Our ongoing work aims to establish a high-resolution chronostratigraphy for Tuzhou City in Anhui Province

  5. Acesso ao tratamento da diabetes na Bahia: por que se recorre ao judiciário?.

    OpenAIRE

    Lisboa, Erick Soares

    2015-01-01

    A judicialização da saúde é um fenômeno importante, que tem motivado a realização de inúmeros estudos no país. A Constituição do país estabelece o direito de todos e o dever do Estado em prover acesso universal as ações e serviços de saúde. Ao longo dos 25 anos do SUS houve uma ampliação do acesso a medicamentos, e a cada ano, novos fármacos vem sendo lançados no Brasil pelas indústrias farmacêuticas. A judicialização do acesso a medicamentos tem causado impactos na estruturação, no financiam...

  6. Métodos clássicos de protecção de sistemas elevatórios contra o golpe de aríete

    OpenAIRE

    2011-01-01

    Dissertação para obtenção do Grau de Mestre em Engenharia do Ambiente, perfil Engenharia Sanitária A ocorrência de regimes transitórios, em particular do golpe de aríete e subsequente propagação de ondas de pressão, em sistemas elevatórios de água e águas residuais, é um acontecimento normal e frequente, que acompanha qualquer alteração nas suas condições normais de funcionamento. As circunstâncias mais violentas, associadas ao golpe de aríete, normalmente, resultam do corte de energia ...

  7. An efficient algorithm for generating AoA networks

    Directory of Open Access Journals (Sweden)

    Nasser Eddine Mouhoub

    2012-01-01

    Full Text Available The activities, in project scheduling, can be represented graphically in two different ways, by either assigning the activities to the nodes 'AoN directed acyclic graph (dag or to the arcs 'AoA dag. In this paper, a new algorithm is proposed for generating, for a given project scheduling problem, an Activity-on-Arc dag starting from the Activity-on-Node dag using the concepts of line graphs of graphs.

  8. {sup 40}Ar-{sup 39}Ar dating of terrestrial and exterrestrial materials. Basalts from the Japan Sea floor, Deccan Plateau and meteorites from Antarctica

    Energy Technology Data Exchange (ETDEWEB)

    Kaneoka, Ichiro [Tokyo Univ. (Japan). Earthquake Research Inst.; Takigami, Yutaka

    1994-09-01

    Through a series of {sup 40}Ar-{sup 39}Ar dating for terrestrial and exterrestrial samples, the results for basalts from the Japan Sea floor, Deccan Plateau and for meteorites from Antarctica give significant information concerning their formation histories. {sup 40}Ar-{sup 39}Ar ages of basalts from the Japan Sea floor give a constraint that the Japan Sea floor was formed at least 20 Ma. {sup 40}Ar-{sup 39}Ar ages for dyke samples from the Deccan Plateau indicate a possibility for the occurrence of a little younger ages than that of the main plateau formations by a few million years. Meteorites collected from Antarctica show some variable {sup 40}Ar-{sup 39}Ar ages reflecting their different thermal histories. (author).

  9. Analysis of Intensity Fluctuations of SASE using the AR Model

    CERN Document Server

    Kato, Ryukou; Isoyama, Goro; Kashiwagi, Shigeru; Okamoto, C; Suemine, Shoji; Yamamoto, Tamotsu

    2004-01-01

    We are conducting experimental study on Self-Amplified Spontaneous Emission (SASE) in the far-infrared region using the L-band linac at the Institute of Scientific and Industrial Research (ISIR), Osaka University. The intensity of SASE fluctuates intrinsically because the number of coherent optical pulses generated in an electron bunch is limited. In the actual system, however, another factor producing intensity fluctuations also shows up, which is instability of the linac. Generally speaking, it is difficult to distinguish contributions of these two factors in measured intensity fluctuations. We have applied the autoregressive (AR) model, which is one of the techniques of statistical analysis, to exclude contributions of linac instability from measured data. In the AR model, the present data can be expressed with a linear combination of the past data plus white noise. In the analysis, contributions of the linac instability are identified with the AR model and can be subtracted from the measured data of SASE,...

  10. Effects of AR Antagonist on Myocardial α1-AR Density and VERP-D after Myocardial Infarction

    Institute of Scientific and Technical Information of China (English)

    Zhang Jingmin; Wu Wei; Fang Chang; Zhang Yan; Wang Jingfeng

    2004-01-01

    Objectives To investigate the effects of adrenergic receptor antagonist ( metoprolol or prazosin) on myocardial α1-AR density and the changes of ventricular effective refractory period dispersion (VERP-D) in rabbits after myocardial infarction.Methods twenty-four adult male New Zealand rabbits were divided into four groups at random: control group ( n = 6 ); MI with placebo group ( n = 6 ); MI with metoprolol group (n = 6 ) ; MI with prazosin group (n = 6 ). The rabbits received corresponding drugs for seven days, beginning at the first day after MI and myocardial α1-AR density were measured and meanwhile, myocardial β-AR was also measured.Results In the placebo group, the density of ventricular α1-AR was increased in comparison with control group ( α1 -AR in normal region 36.9 ± 0.2 vs 27.3 ±0.9 fmol mg-1 Pro-1 ,p <0.01; α1-AR in ischemic region 33.0±0.9 vs 26.6 ±0.4 fmol mg-1 pro-1 P <0.01). In the metoprolol group, it was also increased in comparison with control group( α1-AR in normal region 44.7 ±1.5 vs 27.3 ±0.9 fmol mg-1 pro-1 ,P <0.01; α1-AR in ischemic region 33.6 ± 0.5 vs 26.6 ± 0.4 fmol mg-1pro-1 , P < 0.01 ). Meanwhile the density of ventricular α1-AR in normal region in the metoprolol group was increased in comparison with placebo group (44.7 ±1.5 vs 36.9 ±0.2 fmol mg-1 pro-1,P<0.01). While it decreased in the prazosin group in comparison with control group ( α1-AR in normal region 22.5 ± 0.6 vs27.3 ±0.9 fmol mg-1pro-1 ,P <0.01; α1-AR in ischemic region 20.9 ±0.4 vs 26.6 ±0.4 fmol mg-1 pro-1,P <0.01 ). VERP-D was increased after MI(P <0.01 ).After treatment with metoprolol or prazosin, VERP-D was decreased ( P < 0.01 ). Conclusions After acute MI, α1-AR of ventricular myocardium was upregulated, which may be accompanied by its activitation.The density of myocardial α1-AR became upregulated more dramatically treated with metoprolol and downregulated with prazosin. When treated with metoprolol or prazosin

  11. A desigualdade espacial do Baixo Peso ao Nascer no Brasil

    Directory of Open Access Journals (Sweden)

    Marina Clarissa Barros de Melo Lima

    2013-08-01

    Full Text Available O baixo peso ao nascer (BPN é fator de risco para a morbidade, mortalidade neonatal e infantil. No Brasil os maiores percentuais de baixo peso ao nascer ocorrem em regiões de melhor situação socioeconômica. O objetivo deste artigo é conhecer a distribuição espacial de taxas de baixo peso ao nascer e a correlação com indicadores sociais e de serviço. Desenho: ecológico, tendo os estados brasileiros como unidades de análise. Utilizou-se técnica de análise espacial, dados de 2009 do SINASC, IPEA e IBGE. Taxas maiores de baixo peso ao nascer estão nos estados da região sul/sudeste, Moran Global: 0,267, p = 0,02. Aglomerados do tipo alto-alto na região Sudeste e baixo-baixo em estados da região da Amazônia Legal. A desigualdade espacial do baixo peso ao nascer reflete as condições socioeconômicas dos estados. Regiões mais desenvolvidas detêm maiores taxas de baixo peso ao nascer, portanto, a presença do serviço e sua utilização fazem diminuir a mortalidade infantil e aumentar o BPN.

  12. Visible AO Observations at Halpha for Accreting Young Planets

    Science.gov (United States)

    Close, L. M.; Follette, K.; Males, J. R.; Morzinski, K.; Rodigas, T. J.; Hinz, P.; Wu, Y.-L.; Apai, D.; Najita, J.; Puglisi, A.; Esposito, S.; Riccardi, A.; Bailey, V.; Xompero, M.; Briguglio, R.; Weinberger, A.

    2014-01-01

    We utilized the new high-order (250-378 mode) Magellan Adaptive Optics system (MagAO) to obtain very high-resolution science in the visible with MagAO's VisAO CCD camera. In the good-median seeing conditions of Magellan (0.5-0.7'') we find MagAO delivers individual short exposure images as good as 19 mas optical resolution. Due to telescope vibrations, long exposure (60s) r' (0.63μm) images are slightly coarser at FWHM = 23-29 mas (Strehl ~ 28%) with bright (R Orion Trapezium θ1 Ori A, B, and C cluster members were obtained with VisAO. In particular, the 32 mas binary θ1 Ori C 1 C 2 was easily resolved in non-interferometric images for the first time. Relative positions of the bright trapezium binary stars were measured with ~ 0.6-5 mas accuracy. In the second commissioning run we were able to correct 378 modes and achieved good contrasts (Strehl>20% on young transition disks at Hα). We discuss the contrasts achieved at Hα and the possibility of detecting low mass (~ 1-5 Mjup) planets (past 5AU) with our new SAPPHIRES survey with MagAO at Hα.

  13. A model for meteoritic and lunar 40Ar/39Ar age spectra: Addressing the conundrum of multi-activation energies

    Science.gov (United States)

    Boehnke, P.; Harrison, T. Mark; Heizler, M. T.; Warren, P. H.

    2016-11-01

    Results of whole-rock 40Ar/39Ar step-heating analyses of extra-terrestrial materials have been used to constrain the timing of impacts in the inner solar system, solidification of the lunar magma ocean, and development of planetary magnetic fields. Despite the importance of understanding these events, the samples we have in hand are non-ideal due to mixed provenance, isotopic disturbances from potentially multiple heating episodes, and laboratory artifacts such as nuclear recoil. Although models to quantitatively assess multi-domain, diffusive 40Ar* loss have long been applied to terrestrial samples, their use on extra-terrestrial materials has been limited. Here we introduce a multi-activation energy, multi-diffusion domain model and apply it to 40Ar/39Ar temperature-cycling, step-heating data for meteoritic and lunar samples. We show that age spectra of extra-terrestrial materials, the Jilin chondrite (K-4) and Apollo 16 lunar breccia (67514 , 43), yielding seemingly non-ideal behavior commonly interpreted as either laboratory artifacts or localized shock heating of pyroxene, are meaningful and can be understood in context of the presence of multi-diffusion domains containing multiple activation energies. Internally consistent results from both the meteoritic and lunar samples reveal high-temperature/short duration thermal episodes we interpret as due to moderate shock heating.

  14. Axenfeld-Rieger syndrome (ARS): A review and case report.

    LENUS (Irish Health Repository)

    Waldron, Jennie M

    2011-08-29

    Axenfeld-Rieger syndrome (ARS) is a rare, autosomal dominant condition characterized by ocular, craniofacial, dental, and periumbilical abnormalities. Relatively little information exists on this syndrome within the dental literature despite the fact that midface hypoplasia and maxillary hypodontia are classical presenting features of this syndrome. This is a case report of a 7-year-old Caucasian female with ARS who presented with significant ocular and dental anomalies. She was also found to have osteopenia. Her dental condition is described, her immediate treatment is shown, and her long-term treatment needs are discussed.

  15. Interatomic scattering in energy dependent photoelectron spectra of Ar clusters

    Energy Technology Data Exchange (ETDEWEB)

    Patanen, M.; Benkoula, S.; Nicolas, C.; Goel, A. [Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex (France); Antonsson, E. [Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex (France); Physikalische und Theoretische Chemie Institut für Chemie und Biochemie, Fachbereich Biologie, Chemie, Pharmazie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin (Germany); Neville, J. J. [Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex (France); Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick E3B 6E2 (Canada); Miron, C., E-mail: Catalin.Miron@synchrotron-soleil.fr [Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex (France); Extreme Light Infrastructure - Nuclear Physics (ELI-NP), ‘Horia Hulubei’ National Institute for Physics and Nuclear Engineering, 30 Reactorului Street, RO-077125 Măgurele, Jud. Ilfov (Romania)

    2015-09-28

    Soft X-ray photoelectron spectra of Ar 2p levels of atomic argon and argon clusters are recorded over an extended range of photon energies. The Ar 2p intensity ratios between atomic argon and clusters’ surface and bulk components reveal oscillations similar to photoelectron extended X-ray absorption fine structure signal (PEXAFS). We demonstrate here that this technique allows us to analyze separately the PEXAFS signals from surface and bulk sites of free-standing, neutral clusters, revealing a bond contraction at the surface.

  16. β-delayed Multi-particle Emission From 31Ar

    Institute of Scientific and Technical Information of China (English)

    A. A. Ciemny; J. Du´enas-Daz; V. Dunin; J. M. Espino; A. Estrade; F. Farinon; A. Fomichev; H. Geisse; A. Gorshkov; G. Kami´nski; O. Kiselev; C. Mazzocchi; R. Kn¨obe; S. Krupko; M. Kuich; Yu. A. Litvinov; G. Marquinez-Dur´an; I. Martel; I. Mukha; C. Nociforo; A. K. Ord´uz; S. Pietri; W. Dominik; A. Prochazka; A. M. S´anchez-Ben´ıtez; H. Simon; B. Sitar; R. Slepnev; M. Stanoiu; P. Strmen; I. Szarka; M. Takechi; Y. Tanaka; Z. Janas; H. Weick; J. S. Winfield; M. Pf¨utzner; M. Pomorski; L. Acosta; S. Baraeva; E. Casarejos

    2016-01-01

    The β+ decay of 31Ar was investigated in an experiment at the GSI-FRS spectrometer. The ions of interest have been produced in the fragmentation of a 36Ar beam at 880 MeV/nucleon and implanted in a time projection chamber with optical readout. In addition to β-delayed one and two proton emission, for the first time the emission ofβ-delayed 3 protons has been observed. The branching ratio for this decay mode is found to be (0.07 ± 0.02)%.

  17. Adsorption of Ar on a nonuniform MgO surface

    Science.gov (United States)

    Hinman, D. C.; Halsey, G. D.

    1976-01-01

    Data are presented for the adsorption of Ar and N2 on a strongly heterogeneous MgO surface at 84 K and for Ar at a range of temperatures between 130 and 250 K. The high-temperature data are analyzed according to a model which separates the contributions to the potential into bulk and surface terms, providing a method for the determination of the surface area from parameters characteristic of the bulk material. A solid-gas energy parameter and parameters indicating the strength of the impurity sites are also evaluated.

  18. Development of a low-level Ar-37 calibration standard

    CERN Document Server

    Williams, R M; Bowyer, T W; Day, A R; Fuller, E S; Haas, D A; Hayes, J C; Hoppe, E W; Humble, P H; Keillor, M E; LaFerriere, B D; Mace, E K; McIntyre, J I; Miley, H S; Myers, A W; Orrell, J L; Overman, C T; Panisko, M E; Seifert, A

    2016-01-01

    Argon-37 is an environmental signature of an underground nuclear explosion. Producing and quantifying low-level Ar-37 standards is an important step in the development of sensitive field measurement instruments. This paper describes progress at Pacific Northwest National Laboratory in developing a process to generate and quantify low-level Ar-37 standards, which can be used to calibrate sensitive field systems at activities consistent with soil background levels. This paper presents a discussion of the measurement analysis, along with assumptions and uncertainty estimates.

  19. A Knock-in Reporter for a Novel AR-Targeted Therapy

    Science.gov (United States)

    2016-05-01

    MK, Gursoy-Yuzugullu O, Xu C, Xu Y, Price BD. DNA double-strand breaks promote methylation of histone H3 on lysine 9 and transient formation of...carrying FLuc in the AR gene locus and thereby bicistronically co-expressing the reporter gene with AR under the control of the endogenous AR promoter and...AR gene under the control of the endogenous AR promoter and enhancer. Such a knock-in reporter can faithfully reproduce chemical responses of the

  20. Thermal plasma properties for Ar-Al, Ar-Fe and Ar-Cu mixtures used in welding plasmas processes: I. Net emission coefficients at atmospheric pressure

    Science.gov (United States)

    Cressault, Y.; Gleizes, A.

    2013-10-01

    This article is devoted to the calculation of the net emission coefficient (NEC) of Ar-Al, Ar-Fe and Ar-Cu mixtures at atmospheric pressure for arc welding processes. The results are given in data tables for temperatures between 3 kK and 30 kK, for five plasma thicknesses (0, 0.5, 1, 2, 5 mm) and ten concentrations of metallic vapours (pure gas, 0.01%, 0.1%, 1%, 5%, 10%, 25%, 50%, 75% and pure metal vapours in mass proportions). The results are in good agreement with most of the works published on the subject for such mixtures. They highlight the influence of three parameters on the radiation of the plasma: the NEC is directly related to temperature and inversely related to plasma radius and is highly sensitive to the presence of metal vapours. Finally, numerical data are supplied in tables in order to develop accurate computational modelling of welding arc and to estimate both qualitatively and quantitatively the influence of each metallic vapour on the size and on the shape of the weld pool.

  1. Transcriptional and posttranscriptional regulation of Bacillus sp. CDB3 arsenic-resistance operon ars1

    Directory of Open Access Journals (Sweden)

    Xuefei Yu

    2015-09-01

    Full Text Available Bacillus sp. CDB3 possesses a novel eight-gene ars cluster (ars1, arsRYCDATorf7orf8 with some unusual features in regard to expression regulation. This study demonstrated that the cluster is a single operon but can also produce a short three-gene arsRYC transcript. A hairpin structure formed by internal inverted repeats between arsC and arsD was shown to diminish the expression of the full operon, thereby probably acting as a transcription attenuator. A degradation product of the arsRYC transcript was also identified. Electrophoretic mobility shift analysis demonstrated that ArsR interacts with the ars1 promoter forming a protein-DNA complex that could be impaired by arsenite. However, no interaction was detected between ArsD and the ars1 promoter, suggesting that the CDB3 ArsD protein may not play a regulatory role. Compared to other ars gene clusters, regulation of the Bacillus sp. CDB3 ars1 operon is more complex. It represents another example of specific mRNA degradation in the transporter gene region and possibly the first case of attenuator-mediated regulation of ars operons.

  2. Additional 40Ar- 39Ar dating of the basement and the alkaline volcanism of Gorringe Bank (Atlantic Ocean)

    Science.gov (United States)

    Féraud, Gilbert; York, Derek; Mével, Catherine; Cornen, Guy; Hall, Chris M.; Auzende, Jean-Marie

    1986-09-01

    40Ar/ 39Ar step heating analyses are reported for a variety of samples from Gorringe Bank (Atlantic Ocean). Flat age spectra for two primary, igneous hornblendes of Gorringe (corresponding to an age of 143 Ma) show that the K-Ar ages obtained on these samples by Prichard and Mitchell [4] are evidently crystallization and not hybrid ages. This sustains the concept of an initiation age of 140 Ma [4] for Gorringe Bank. No support is found for Carpena's suggestion [7] that the formation of Gorringe Bank began 200 Ma ago. Secondary hornblendes from Ormonde seamount rocks appear to have formed shortly after the initiation of the Bank. Precise plateau ages on samples of two alkaline volcanics from Ormonde correspond to the older limit of the alkaline volcanism suggested by Féraud et al. [3,5].

  3. Characterization of the ars Gene Cluster from Extremely Arsenic-Resistant Microbacterium sp. Strain A33▿ †

    Science.gov (United States)

    Achour-Rokbani, Asma; Cordi, Audrey; Poupin, Pascal; Bauda, Pascale; Billard, Patrick

    2010-01-01

    The arsenic resistance gene cluster of Microbacterium sp. A33 contains a novel pair of genes (arsTX) encoding a thioredoxin system that are cotranscribed with an unusual arsRC2 fusion gene, ACR3, and arsC1 in an operon divergent from arsC3. The whole ars gene cluster is required to complement an Escherichia coli ars mutant. ArsRC2 negatively regulates the expression of the pentacistronic operon. ArsC1 and ArsC3 are related to thioredoxin-dependent arsenate reductases; however, ArsC3 lacks the two distal catalytic cysteine residues of this class of enzymes. PMID:19966021

  4. Thermal History of the Felsite Unit, Geysers Geothermal Field, From Thermal Modeling of 40Ar/39Ar Incremental Heating Data

    Energy Technology Data Exchange (ETDEWEB)

    T. M. Harrison (U of California); G. B. Dalrymple (Oregon State U); J. B. Hulen (U of Utah); M. A. Lanphere; M. Grove; O. M. Lovera

    1999-08-19

    An Ar-40/Ar-39 and U-Pb study was performed of the Geysers plutonic complex of the Geysers Geothermal Field in California. Sixty-nine ion microprobe spot analyses of zircons from four granite samples from the plutonic complex that underlies the Geysers geothermal field yielded Pb-207/Pb-206 vs. U-238/Pb-206 concordia ages ranging from 1.13 {+-} 0.04 Ma to 1.25 {+-} 0.04 Ma. The U-Pb ages coincide closely with Ar-40/Ar-39 age spectrum plateau and ''terminal'' ages from coexisting K-feldspars and with the eruption ages of overlying volcanic rocks. The data indicate that the granite crystallized at 1.18 Ma and had cooled below 350 C by {approximately}0.9-1.0 Ma. Interpretation of the feldspar Ar-40/Ar-39 age data using multi-diffusion domain theory indicates that post-emplacement rapid cooling was succeeded either by slower cooling from 350-300 C between 1.0 and 0.4 Ma or transitory reheating to 300-350 C at about 0.4-0.6 Ma. Heat flow calculations constrained with K-feldspar thermal histories and the pre sent elevated regional heal flow anomaly demonstrate that appreciable heat input from sources external to the known Geysers plutonic complex is required to maintain the geothermal system. This requirement is satisfied by either a large, underlying, convecting magma chamber (now solidified) emplaced at 1.2 Ma or episodic intrusion of smaller bodies from 1.2-0.6 Ma.

  5. Late Paleozoic deformation and exhumation in the Sierras Pampeanas (Argentina): 40Ar/39Ar-feldspar dating constraints

    Science.gov (United States)

    Löbens, Stefan; Oriolo, Sebastián; Benowitz, Jeff; Wemmer, Klaus; Layer, Paul; Siegesmund, Siegfried

    2016-09-01

    Systematic 40Ar/39Ar feldspar data obtained from the Sierras Pampeanas are presented, filling the gap between available high- (>~300 °C) and low-temperature (Pie de Palo regions, whereas the Sierras de San Luis and the Sierra de Comechingones regions record exhumation during the Carboniferous. Comparison between new and available data points to a Carboniferous tectonic event in the Sierras Pampeanas, which represents a key period to constrain the early evolution of the proto-Andean margin of Gondwana. This event was probably transtensional and played a major role during the evolution of the Paganzo Basin as well as during the emplacement of alkaline magmatism in the retroarc.

  6. Acesso ao cuidado à saúde da criança em serviços de atenção primária

    Directory of Open Access Journals (Sweden)

    Rosane Meire Munhak da Silva

    2014-10-01

    Full Text Available Realizou-se uma pesquisa de abordagem qualitativa com base no referencial metodológico da hermenêutica dialética, com o objetivo de identificar o atributo acesso da atenção primária para a resolução dos problemas de saúde de crianças menores de um ano a partir dos relatos de pais e cuidadores. Envolveram-se 16 cuidadores de crianças atendidas em unidades de pronto atendimento de Cascavel-PR, em 2010. Foram reconhecidas quatro categorias temáticas: Aconselhamento familiar ao buscar atenção à saúde da criança; Ausência de acolhimento ao primeiro contato; Presença de classificação de risco para atenção à saúde da criança; Barreiras que impedem o acesso à atenção à saúde. Concluiu-se que as famílias exibiram dificuldades para alcançar resolutividade aos problemas de saúde dos filhos, mediante a falta de acesso aos serviços de atenção primária.

  7. Electron Scattering by Ar Atoms in a Laser Field

    Institute of Scientific and Technical Information of China (English)

    ZHANG Sheng-Hai; QIAN Xing-Zhong; JIANG Yu-Hai; SUN Jin-Feng

    2000-01-01

    The differentialcross sections of electron-Ar atom scattering for free-free transition with one and two photons absorption in the presence of CO2 laser field is obtained by the second Born approximation, the direction of laser polarization being perpendicular to the change of electron momentum. Compared with the more recent available experimental data, the present results are very good.

  8. Mälestusi "Ars Fennica'st" / Eha Komissarov

    Index Scriptorium Estoniae

    Komissarov, Eha, 1947-

    2009-01-01

    Ars Fennica 2008. aasta nominentide Tea Mäkipää, Seppo Renvalli, Maria Dunckeri, Katrīna Neiburga (Läti) ja Mark Raidpere näitus Kumu Kunstimuuseumis 26. aprillini. Preemiaga pärjati Mark Raidpere ekspositsioon

  9. Ars Fennica - isikliku ja poliitilise vahel / Janar Ala

    Index Scriptorium Estoniae

    Ala, Janar, 1979-

    2009-01-01

    2008. aasta Ars Fennica kunstiauhinna kandidaatide tööde näitus Kumu Kunstimuuseumis kuni 26. aprillini. Läti kunstniku Katrina Neiburga, soomlaste Seppo Renvalli, Maria Dunckeri ja Tea Mäkipää ning Mark Raidpere näitusel eksponeeritud töödest

  10. Big data computing: Building a vision for ARS information management

    Science.gov (United States)

    Improvements are needed within the ARS to increase scientific capacity and keep pace with new developments in computer technologies that support data acquisition and analysis. Enhancements in computing power and IT infrastructure are needed to provide scientists better access to high performance com...

  11. Atom trap trace analysis of {sup 39}Ar

    Energy Technology Data Exchange (ETDEWEB)

    Welte, Joachim

    2011-12-14

    Detection of {sup 39}Ar in natural water samples can be employed for radiometric dating on a timescale of 50 to 1000 years before present. This experimental work comprises the setup of an atomic beam and trap apparatus that captures and detects {sup 39}Ar atoms by the laser-cooling technique ''Atom Trap Trace Analysis''. With this approach, the limitations of low-level counting, regarding sample size and measurement time, could be overcome. In the course of this work, the hyperfine structure spectrum of the cooling transition 1s{sub 5}-2p{sub 9} has been experimentally determined. A high intensity, optically collimated beam of slow metastable argon atoms has been set up and fluorescence detection of individual {sup 39}Ar atoms in a magneto-optical trap is realized. {sup 39}Ar count rates of 1 atom in about 4 hours have been achieved for atmospheric argon. Recent improvements further suggest that even higher count rates of 1 atom/hour are within reach.

  12. The ARS Culture Collection and Developments in Biotechnology

    Science.gov (United States)

    The ARS Culture Collection (NRRL) has played a prominent role in the development of biotechnology since its founding in 1940 when the Northern Regional Research Laboratory opened. Early discoveries included selection of production strains for penicillin, dextran blood extender, xanthan gum and the v...

  13. Near-contact Binaries IZ Monocerotis and AR Draconis

    Science.gov (United States)

    Yang, Yuan-Gui; Dai, Hai-Feng; Zhou, Zheng; Li, Qun

    2016-05-01

    We present multi-color photometric observations for two neglected near-contact binaries, IZ Mon (P=0\\_\\_AMP\\_\\_fd;77980) and AR Dra (P=0\\_\\_AMP\\_\\_fd;67584). By the aid of the updated W-D analysis code, the photometric solutions were deduced from the multi-color light curves (LCs). IZ Mon is a semi-detached binary with a mass ratio of q=0.388(+/- 0.002), while AR Dra is a detached star with a mass ratio of q=0.652(+/- 0.002). The asymmetric LCs of IZ Mon were modeled by a hot spot on the secondary’s surface, which may be attributed to mass transfer from the primary. Based on all collected eclipse times for two systems, we constructed their timing residual curves. The orbital period for IZ Mon may be continuously decreasing at a rate of {dP}/{dt}=-2.06(+/- 0.04) {days} {{yr}}-1, which may result from mass and angular momentum loss from the central system. For AR Dra, there exists a cyclic variation with a period of {P}3=104.9(+/- 2.9) {yr} due to light-time orbit effect via the presence of the third body, whose mass is more than 0.28(+/- 0.02) {M}⊙ . Finally, two near-contact binaries, IZ Mon and AR Dra, will evolve into contact binaries.

  14. Multi-particle emission in the decay of $^{31}$Ar

    CERN Document Server

    Koldste, G T; Borge, M.J.G.; Briz, J.A.; Carmona-Gallardo, M.; Fraile, L.M.; Fynbo, H.O.U.; Giovinazzo, J.; Grann, B.D.; Johansen, J.G.; Jokinen, A.; Jonson, B.; Kurturkian-Nieto, T.; Kusk, J.H.; Nilsson, T.; Perea, A.; Pesudo, V.; Picado, E.; Riisager, K.; Saastamoinen, A.; Tengblad, O.; Thomas, J.C.; Van de Walle, J.

    2014-01-01

    A multi-hit capacity setup was used to study the decay of the dripline nucleus 31Ar, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the beta-delayed three-proton decay of 31Ar is presented for the first time together with a quantitative analysis of the beta-delayed two-proton-gamma-decay. A new method for determination of the spin of low-lying levels in the beta-proton-daughter 30S using proton-proton angular correlations is presented and used for the level at 5.2 MeV, which is found to be either a 3+ or 4+ level, with the data pointing towards the 3+. The half-life of 31Ar is found to be 15.1(3) ms. An improved analysis of the Fermi beta-strength gives a total measured branching for the beta-3p-decay of 3.60(44) %, which is lower than the theoretical value found to be 4.24(43) %. Finally the strongest gamma-transitions in the decay of 33Ar are shown including a line at 4734(3) keV associated to the decay of the IAS, which has not previously been identified.

  15. He-, Ne-, and Ar-phosgene intermolecular potential energy surfaces

    DEFF Research Database (Denmark)

    Munteanu, Cristian R.; Henriksen, Christian; Felker, Peter M.;

    2013-01-01

    Using the CCSD(T) model, we evaluated the intermolecular potential energy surfaces of the He-, Ne-, and Ar-phosgene complexes. We considered a representative number of intermolecular geometries for which we calculated the corresponding interaction energies with the augmented (He complex) and double...

  16. Vector Magnetic Field Measurement of NOAA AR 10197

    Institute of Scientific and Technical Information of China (English)

    Hong-Fei Liang; Hai-Juan Zhao; Fu-Yuan Xiang

    2006-01-01

    A set of two-dimensional Stokes spectral data of NOAA AR 10197 obtained by the Solar Stokes Spectral Telescope (S3T) at the Yunnan Observatory are qualitatively analyzed.The three components of the vector magnetic field, the strength H, inclination γ and azimuth x, are derived. Based on the three components, we contour the distributions of the longitudinal magnetic field and transverse magnetic field. The active region (AR) has two different magnetic polarities apparent in the longitudinal magnetic map due to projection effect. There is a basic agreement on the longitudinal magnetic fields between the S3T and SOHO/MDI magnetograms, with a correlation coefficient ρBl = 0.911. The transverse magnetic field of the AR has a radial distribution from a center located in the southwest of the AR. It is also found that the transverse magnetic fields obtained by Huairou Solar Observing Station (HRSOS) have a similar radial distribution. The distributions of transverse magnetic field obtained by S3T and HRSOS have correlation coefficients, ρAzimu = 0.86 and ρBt = 0.883,in regard to the azimuthal angle and intensity.

  17. Interacting with Visual Poems through AR-Based Digital Artwork

    Science.gov (United States)

    Lin, Hao-Chiang Koong; Hsieh, Min-Chai; Liu, Eric Zhi-Feng; Chuang, Tsung-Yen

    2012-01-01

    In this study, an AR-based digital artwork called "Mind Log" was designed and evaluated. The augmented reality technique was employed to create digital artwork that would present interactive poems. A digital poem was generated via the interplay between a video film and a text-based poem. This artwork was created following a rigorous design flow,…

  18. Global properties of the white dwarf pulsar AR Scorpii

    CERN Document Server

    Franzon, B

    2016-01-01

    In view of the new recent observation and measurement of the fast-rotating and highly-magnetized white dwarf AR Sco \\cite{Marsh:2016uhc}, we determine bounds for its radius, magnetic fields, moment of inertia and gravitational wave (GW) emission by using observations of the luminosity, as well the rotation frequency $\

  19. Pulsed electric field (PEF)research at USDA, ARS, ERRC

    Science.gov (United States)

    This article summarizes the effects of pulsed electric fields on the microbiological safety and quality aspects of various liquid food matrices, obtained at USDA, ARS, Eastern Regional Research Center under CRIS Project No. 1935-41420-013-00D, Processing Intervention Technologies for Enhancing the S...

  20. Analizando las intenciones profundas del "Ars poetica" de Horacio

    Directory of Open Access Journals (Sweden)

    Óscar Velásquez

    1998-09-01

    Full Text Available El "Arte Poética" de Horacio ha sido interpretada muy diversamente, pero es conveniente tener en cuenta su estilo epistolar, que la distancia a la vez del tratado de tipo filosófico y de la libertad de la sátira. Se propone en este estudio que de todos modos el AP es una obra que se articula en base a una idea fundamental, a saber, la de "forma", de la que surgen los conceptos de 'materia temática' y 'acción', especialmente la épica y el drama. El amplio espacio, por otra parte, concedido al arte, como sería natural en una poética,se debería explicar por el hecho de que el "ars" es de un cierto modo la "forma" que da realidad al verdadero poeta. (Horace's "Ars Poetica" has been interpreted in many ways, but it is important to consider its epistolary style, which sets it apart from the philosophical essay and from the free-style satyre. This study proposes that "Ars Poetica" is articulated upon a fundamental notion, that of "form", from which the concepts of 'thematic matter' and 'action' emerge, especially epic and drama. The relevance given to art, on the other hand, is explained by the fact that "ars" is somehow the "form" that shapes the real poet.

  1. CANONICAL COMPUTATIONAL FORMS FOR AR 2-D SYSTEMS

    NARCIS (Netherlands)

    ROCHA, P; WILLEMS, JC

    1990-01-01

    A canonical form for AR 2-D systems representations is introduced. This yields a method for computing the system trajectories by means of a line-by-line recursion, and displays some relevant information about the system structure such as the choice of inputs and initial conditions.

  2. Behaviour of AR glass fibre for building structural applications

    Directory of Open Access Journals (Sweden)

    Miravete, A.

    2005-12-01

    Full Text Available The AR glass reinforcement fibres were designed to resist the alkalis from the concrete. This is the main reason for its utilisation as a short-fibre-reinforcement of mortar and concrete for the last decades. Originally, the AR glass fibre sizing was not compatible with synthetic resins, so that this type of reinforcement was applied exclusively to mortar and concrete matrices. Recently, due to the developments of sizing, which are compatible with synthetic resins, the AR- glass fibres may be used as reinforcement of organic matrix composite materials, broadening the range of structural applications. The mechanical properties of AR glass fibre and organic matrix composite materials will be studied in this paper. First, the behaviour of this material under stress corrosion will be analysed. Their mass loss will be compared to E, C, and boron free glass fibres. Second, an experimental study dealing with 3P test bending and short beam ofAR glass fibre/polyester will de described with the goal of obtaining their Young modulus and tensile and interlaminar shear strengths. Finally, these experimental results will be compared to E glass fibre/polyester and several conclusions about their structural applications will be drawn.

    El vidrio AR y su presentación en forma de fibras de refuerzo, fue diseñado para ser inerte a los álcalis de los cementos. Por este motivo se viene utilizando desde hace varias décadas como refuerzo de morteros y hormigones en forma de fibra corta. El ensimaje que estas fibras de vidrio de refuerzo A R presentaba en su origen no era compatible con resinas de tipo sintéticas, por lo que el refuerzo era exclusivo para cementos y hormigones fuera cual fuera la aplicación, formato o proceso productivo. Recientemente, gracias al desarrollo específico de ensimajes especiales acordes a las fibras de vidrio AR ha aparecido la misma tipología de vidrio AR como refuerzo en forma de fibra continua compatible con resinas sint

  3. Characterizing and mitigating vibrations for SCExAO

    Science.gov (United States)

    Lozi, Julien; Guyon, Olivier; Jovanovic, Nemanja; Singh, Garima; Goebel, Sean; Norris, Barnaby; Okita, Hirofumi

    2016-07-01

    The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument, under development for the Subaru Telescope, has currently the fastest on-sky wavefront control loop, with a pyramid wavefront sensor running at 3.5 kHz. But even at that speed, we are still limited by low-frequency vibrations. The current main limitation was found to be vibrations attributed mainly to the rotation of the telescope. Using the fast wavefront sensors, cameras and accelerometers, we managed to identify the origin of most of the vibrations degrading our performance. Low-frequency vibrations are coming from the telescope drive in azimuth and elevation, as well as the elevation encoders when the target is at transit. Other vibrations were found at higher frequency coming from the image rotator inside Subaru's adaptive optics facility AO188. Different approaches are being implemented to take care of these issues. The PID control of the image rotator has been tuned to reduce their high-frequency contribution. We are working with the telescope team to tune the motor drives and reduce the impact of the elevation encoder. A Linear Quadratic Gaussian controller (LQG, or Kalman filter) is also being implemented inside SCExAO to control these vibrations. These solutions will not only improve significantly SCExAOs performance, but will also help all the other instruments on the Subaru Telescope, especially the ones behind AO188. Ultimately, this study will also help the development of the TMT, as these two telescopes share very similar drives.

  4. Ar40/Ar39计时及西藏南部喜马拉雅期几个黑云母年龄的测定

    Institute of Scientific and Technical Information of China (English)

    戴橙谟; 洪阿实

    1982-01-01

    Five biotites of Himalayan Period from southern Xizang platean have been irradiated and determined using reactor No. 901 in Qinghua University as fast neutron source(neutron flux 1.17× 1013n/cm2·s, fast neutron - 25%, duration of irradiation 18 hours) and MMhb-1 hornblende from USA as standard. Most of the samples were also determined by Ar36 isotope dilation method, and good agreement has been obtained for the results between the two approaches. This shows that Ar40/Ar39 dating is capable to distinguish clearly the order of intrusion among the multiphase intrnsions with respect to the young granites of Himalayan Period. Powder sample of CaF2 and K2SO4 were irradiated and ratios of (Ar36/Ar37)Ca. and(Ar39/Ar37)Ca and (Ar40/Ar39)x have been measured, which are of the same magnitutc of order as reported from other reac-tors in the world. For the ZBH-2506 biotite standard of China, Ar40/Ar39 age (130.9--131.9my)agrees with the age of 131±2.6 my as determined by dilution method. Plateau age obtained by step-wise heating (131±0.8my) is similar with the data obtained from total fusion and dilution methods.

  5. Precision angle-resolved autoionization resonances in Ar and Ne

    Energy Technology Data Exchange (ETDEWEB)

    Berrah, N.; Langer, B.; Gorczyca, T.W. [Western Michigan Univ., Kalamazoo, MI (United States)] [and others

    1997-04-01

    Theoretical work has shown that the electron angular distribution and the shape of the autoionization resonances are crucial to the understanding of certain types of electron-electron correlation. Autoionization resonances in Ne (Ar) result from the decay of the excited discrete state Ne{sup *} 2s2p{sup 6} np (Ar{sup *} 3s3p{sup 6} np) into the continuum state Ne{sup +} 2s{sup 2}2p{sup 5} + e{sup {minus}} (ks,kd) (Ar{sup +} 3s{sup 2}3p{sup 5} + e{sup {minus}} (ks,kd)). Since the continuum can also be reached by direct photoionization, both paths add coherently, giving rise to interferences that produce the characteristic Beutler-Fano line shape. In this work, the authors report on quantitative angle-resolved electron spectrometry studies of (a) the Ne 2s{sup 2}2p{sup 6} {r_arrow} 2s2p{sup 6} np (n=3-5) autoionizing resonances and the 2s{sup 2}2p{sup 6} {r_arrow} 2p{sup 4}3s3p doubly excited resonance, (b) the Ar 3s{sup 2}3p{sup 6} {r_arrow} 3s3p{sup 6} np (n=4-9) autoionization resonances and extended R-matrix calculations of the angular-distribution parameters for both Ne and Ar measurements. Their results are compared with previous theoretical work by Taylor.

  6. 40Ar/39Ar ages (600-570 Ma of the Serra do Azeite transtensional shear zone: evidence for syncontractional extension in the Cajati area, southern Ribeira belt

    Directory of Open Access Journals (Sweden)

    Rômulo Machado

    2007-12-01

    Full Text Available This paper presents 40Ar/39Ar ages of the rocks from the Serra do Azeite transtensional shear zone in the southern part of the Ribeira belt, between the States of São Paulo and Paraná, and also discusses the regional correlations and the tectonic implications for other parts of the belt. The geochronological data suggest that transtensional deformation was active between 600 and 580 Ma (hornblende and muscovite apparent ages, respectively. This time span is considerably older than previous proposals for the period of activity of these structures (520-480 Ma in the northern segment of this belt and in the Araçuaí belt. Kinematic analysis of the dated mylonites shows extensional structures with top-down movement to ESE compatible with structures found in other tectonic segments in the eastern portion of the Quadrilátero Ferrífero and in the Rio Doce Valley region. Our ages are situated in the same time interval defined for the alkaline magmatism of the Serra do Mar suite. We suggest that the regional tectonic framework was developed during continental-scale extension. This process has been coeval with convergent strain in the adjacent Neoproterozoic shear zones of the Apiaí/Ribeira and Araçuaí belts, which make up significant segments of these belts. The available data show that these structures may not be simply related to post-orogenic gravitational collapse, but must involve a more complex process probably related to dynamic balance between crustal thickening and thinning during tectonic convergence, basin formation and exhumation processes.Este trabalho apresenta idades 40Ar/39Ar de rochas da Zona de Cisalhamento Transtrativa Sinistral da Serra do Azeite, situada na parte sul do cinturão Ribeira, entre os Estados de São Paulo e Paraná, bem como discute a correlação regional e as implicações tectônicas com outras partes do cinturão. Os dados geocronológicos sugerem que a deformação extensional foi ativa entre 600 e 580 Ma

  7. Inorganic arsenic and human prostate cancer Arsênico inorgânico e câncer de próstata humano

    Directory of Open Access Journals (Sweden)

    Lamia Benbrahim-Tallaa

    2009-02-01

    Full Text Available We critically evaluated the etiologic role of inorganic arsenic in human prostate cancer. We assessed data from relevant epidemiologic studies concerning environmental inorganic arsenic exposure. Whole animal studies were evaluated as were in vitro model systems of inorganic arsenic carcinogenesis in the prostate. Multiple studies in humans reveal an association between environmental inorganic arsenic exposure and prostate cancer mortality or incidence. Many of these human studies provide clear evidence of a dose-response relationship. Relevant whole animal models showing a relationship between inorganic arsenic and prostate cancer are not available. However, cellular model systems indicate arsenic can induce malignant transformation of human prostate epithelial cells in vitro. Arsenic also appears to impact prostate cancer cell progression by precipitating events leading to androgen independence in vitro. Available evidence in human populations and human cells in vitro indicates that the prostate is a target for inorganic arsenic carcinogenesis. A role for this common environmental contaminant in human prostate cancer initiation and/or progression would be very important.Realizamos uma avaliação crítica do papel etiológico do arsênico inorgânico no câncer de próstata humano. Avaliamos dados de estudos epidemiológicos relevantes referentes à exposição ao arsênico inorgânico ambiental. Foram avaliados estudos com animais completos, bem como sistemas de modelo in vitro de carcinogênese decorrente de arsênico inorgânico na próstata. Estudos múltiplos em seres humanos revelaram uma associação entre exposição ao arsênico inorgânico ambiental e mortalidade por ou incidência de câncer de próstata. Muitos desses estudos em seres humanos oferecem indícios claros de uma relação dose-resposta. Não se encontram disponíveis modelos animais completos relevantes que mostrem uma relação entre arsênico inorgânico e câncer de

  8. Langmuir Probe Measurements of Inductively Coupled CHF3/Ar and Ar/CHF3/O2 Plasmas

    Science.gov (United States)

    Sharma, S. P.; Rao, M. V. V. S.; Meyyappan, M.

    2000-01-01

    Plasma parameters, such as, electron number density (ne), electron temperature (Te), y electron energy distribution function (EEDF), mean electron energy (Ee), ion number density (ni), and plasma potential (Vp), have been measured by using Langmuir probe in low-pressure (10-50 mTorr) inductively coupled CHF3/Ar and CHF3/Ar/O2 plasmas generated in the GEC cell. The measurements were made at the center of the plasma, keeping the lower electrode grounded, for various CHF3/Ar and Ar/CHF3/O2 mixtures operating at 10-50 mTorr pressures and two input RF power levels, 200 and 300 W. EEDF data show a strong Druyvesteyn distribution with relatively lower number of low energy electrons as compared to a Maxwell distribution and a large electron population with energies higher than the plasma potential. The results further show that at low CHF3 concentrations (less than 50%) the electron number density remains nearly constant with increase in pressure. At higher CHF3 concentrations, however, it decreases with increase in pressure. Plasma potential and electron temperature increase with decrease in pressure and with increase in CHF3 concentration. An analysis of the above observations and mechanisms will be presented.

  9. Geochemistry and 40Ar/39Ar age of Early Carboniferous dolerite sills in the southern Baltic Sea

    Directory of Open Access Journals (Sweden)

    Gediminas Motuza

    2015-08-01

    Full Text Available The Early Carboniferous magmatic event in the southern Baltic Sea is manifested by dolerite intrusions. The presumable area in which the dolerite intrusions occur ranges from 30 to 60 km in east–west direction, and is about 100 km in north–south direction. The dolerites were sampled in well D1-1 and investigated by applying chemical analysis and 40Ar/39Ar step-heating dating. Dolerites are classified as alkali and sodic, characterized by high TiO2 (3.92, 3.99 wt% and P2O5 (1.67, 1.77 wt% and low MgO (4.89, 4.91 wt% concentrations, enriched in light rare earth elements, originated from an enriched mantle magma source and emplaced in a continental rift tectonic setting. The 351 ± 11 Ma 40Ar/39Ar plateau age for groundmass plagioclase indicates a considerable age gap with the 310–250 Ma magmatism in southern Scandinavia and northern Germany. The magmatic rocks in the Baltic Sedimentary Basin are coeval with alkaline intrusions of NE Poland. Both magmatic provinces lie in the northwestward prolongation of the Pripyat–Dnieper–Donetsk Rift (370–359 Ma and may constitute a later phase of magmatic activity of this propagating rift system.

  10. 40Ar/ 39Ar ages for the alkaline volcanism and the basement of Gorringe Bank, North Atlantic ocean

    Science.gov (United States)

    Féraud, Gilbert; Gastaud, Janine; Auzende, Jean-Marie; Olivet, Jean-Louis; Cornen, Guy

    1982-01-01

    Gorringe Bank is situated on the Europe-Africa plate boundary at the eastern end of the Azores-Gibraltar fracture zone. It has two summits, Gettysburg Bank to the Southwest and Ormonde Bank to the northeast. We applied the 40Ar/ 39Ar stepwise heating method to date six samples of the alkaline volcanic rocks, two gabbros from the Ormonde Bank and a dolerite from the Gettysburg Bank. The results that the alkaline volcanism lasted probably for less than 6 Ma(66-60 Ma). Although the nature of this volcanism precludes any subduction feature during its setting, the alkaline volcanism of Ormonde is probably linked to Upper Cretaceous/Eocene compressive tectonic events. The basement rocks of Gorringe Bank reveal distrubed 40Ar/ 39Ar age spectra. One plagioclase and one biotite from a gabbro give evidence for a thermic event whose age is tentatively estimated at about 75 Ma, and related to a variation in the direction of the relative movement between Europe and Africa. The more probable age given by a plagioclase of another gabbro and by a dolerite (110 Ma) corresponds to tilting northeastward of the Gorringe massif.

  11. 40Ar/39Ar geochronological constraints on syn-orogenic strike-slip movement of Tan-Lu fault zone

    Institute of Scientific and Technical Information of China (English)

    ZHU Guang; LIU Guosheng; W. J. Dunlap; C. Teyssier; WANG Yongsheng; NIU Manlan

    2004-01-01

    Two phases of sinistral strike-slip ductile shear belts occur on the eastern margin of the Dabie orogenic belt.A muscovite 40Ar/39Ar plateau age of 128 Ma was obtained from mylonite in the later ductile shear zone. Three muscovite samples separated from mylonites of 3 localities in the earlier ductile shear belts yield 40Ar/39Ar plateau ages of 192.5±0.7 Ma, 189.7±0.6 Ma and 188.7±0.7 Ma, respectively. They are interpreted as cooling ages of the earlier sinistrai strike-slip deformation. It is suggested that left-lateral displacement of the Tan-Lu fault zone started in a late stage of the collision orogeny in the Dabie-Sulu orogenic belt between the North and South China plates. Therefore, the earlier Tan-Lu fault zone was syn-orogenic strike-slip tectonics.The fault zone was used again for sinistral displacement during tectonic activities of peri-Pacific regime in Early Cretaceous. It is proposed that the fault zone occurred as a transform fault during the orogenic process.

  12. Ar-Ar geochronology of Late Mesozoic volcanic rocks from the Yanji area,NE China and tectonic implications

    Institute of Scientific and Technical Information of China (English)

    LI ChaoWen; GUO Feng; FAN WeiMing; GAO XiaoFeng

    2007-01-01

    Ar-Ar dating results of late Mesozoic-Cenozoic volcanic rocks from the Yanji area, NE China provide a new volcano-sedimentary stratigraphic framework. The previously defined "Triassic-Jurassic" volcanic rocks(including those from Sanxianling, Tuntianying, Tianqiaoling and Jingouling Fms.)were erupted during 118-106Ma,corresponding to Early Cretaceous. The new eruption age span is slightly younger than the main stage(130-120 Ma)of the extensive magmatism in the eastern Central Asian Orogenic Belt and its adjacent regions. Subduction-related adakites occurring in the previously defined Quanshuicun Fm. Were extruded at ca.55 Ma. Based on these new Ar-Ar ages, the late Mesozoic to Palaeocene volcano-sedimentary sequences is rebuilt as:Tuopangou Fm., Sanxianling/Tuntianying Fm.(118-115 Ma),Malugou/Tianqiaoling Fm.(K1),Huoshanyan/Jingouling Fm.(108-106 Ma),Changcai Fm.(K2),Quanshuicun Fm.(~55 Ma)and Dalazi Fm. Our results suggest that subduction of the Palaeo-Pacific Ocean beneath the East Asian continental margin occurred during 106to 55 Ma. Consistent with the paleomagnetic observations and magmatic records which indicated that the Izanagi-Farallon ridge subduction beneath the southwestern Japan took place during 95-65 Ma.

  13. Ar-Ar geochronology of Late Mesozoic volcanic rocks from the Yanji area, NE China and tectonic implications

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Ar-Ar dating results of late Mesozoic-Cenozoic volcanic rocks from the Yanji area, NE China provide a new volcano-sedimentary stratigraphic framework. The previously defined “Triassic-Jurassic” volcanic rocks (including those from Sanxianling, Tuntianying, Tianqiaoling and Jingouling Fms.) were erupted during 118―106 Ma, corresponding to Early Cretaceous. The new eruption age span is slightly younger than the main stage (130―120 Ma) of the extensive magmatism in the eastern Central Asian Orogenic Belt and its adjacent regions. Subduction-related adakites occurring in the previously defined Quanshuicun Fm. were extruded at ca. 55 Ma. Based on these new Ar-Ar ages, the late Mesozoic to Palaeocene volcano-sedimentary sequences is rebuilt as: Tuopangou Fm., Sanxianling/Tuntianying Fm. (118―115 Ma), Malugou/Tianqiaoling Fm. (K1), Huoshanyan/Jingouling Fm. (108―106 Ma), Changcai Fm. (K2), Quanshuicun Fm. (~55 Ma) and Dalazi Fm. Our results suggest that subduction of the Pa- laeo-Pacific Ocean beneath the East Asian continental margin occurred during 106 to 55 Ma, consistent with the paleomagnetic observations and magmatic records which indicated that the Izanagi-Farallon ridge subduction beneath the southwestern Japan took place during 95―65 Ma.

  14. ISEA reversed event in the Cretaceous Normal Superchron (CNS):40Ar/39Ar dating and paleomagnetic results

    Institute of Scientific and Technical Information of China (English)

    SHI Ruiping; HE Huaiyu; ZHU Rixiang; PAN Yongxin

    2004-01-01

    In order to provide the age for the ISEA (one reversed event in the CNS) a combined rock magnetic, paleomagnetic and geochronologic study has been conducted on two Cretaceous andesitic basalt lava flows from Sanbaoying, Liaoning Province of northeastern China. Rock magnetic investigations show that pseudo-single domain (PSD) titanomagnetite with poor-Ti content is the dominant magnetic mineral in Sanbaoying lava flows. Detailed systematic thermal demagnetization allowed us to isolate two remanence components after removing a low temperature component at 100℃/150℃; an intermediate temperature component with normal polarity at 150℃/200℃-380℃/400℃ and the characteristic remanence component (ChRM) with reversed polarity above 400℃/450℃. 40Ar/39Ar dating results show that Sanbaoying rocks were erupted at 116.0±0.3 Ma. Combination of paleomagnetic results and 40Ar/39Ar dating indicates that the reversed event recorded in Sanbaoying lavas corresponds to the ISEA event in the CNS. Our age determination for ISEA reversed event provides chronological evidence to study the relevance between global geological events that occurred in the CNS and geodynamo processes.

  15. Avaliação clínica e evolutiva de crianças em programa de atendimento ao uso de fórmulas para alergia à proteína do leite de vaca

    Directory of Open Access Journals (Sweden)

    Ana Laissa O. Aguiar

    2013-06-01

    Full Text Available OBJETIVO: Determinar características clínicas e evolutivas de crianças acompanhadas em programa de referência para fornecimento de fórmulas especiais para alergia ao leite de vaca. MÉTODOS: Estudo descritivo, realizado em amostra de conveniência, com 214 crianças até três anos, com diagnóstico clínico e/ou teste padronizado de provocação oral aberto, referenciadas ao Programa de Fórmulas para Alergia ao Leite de Vaca, em Hospital Universitário Pediátrico de Natal, Rio Grande do Norte (2007/2009. Avaliaram-se dados clínico-epidemiológicos e indicação de fórmulas (soja, hidrolisado ou aminoácido à consulta inicial, além de resposta clínica e evolução nutricional (Anthro-OMS 2006 após três meses. Aplicaram-se os testes do qui-quadrado e t pareado nas análises, considerando-se significante p<0,05. RESULTADOS: Ao primeiro atendimento, a média de idade foi de 9,0±6,9 meses. Manifestações digestórias foram observadas em 81,8%; cutâneas, em 36,9%; e respiratórias, em 23,8%. Escore Z do IMC <-2,0 desvios padrão (DP foi encontrado em 17,9% das crianças com sintomas digestórios isolados, em 41,7% em uso de leite de vaca e em 8,7% com outras fórmulas (p<0,01. Fórmula de proteína isolada de soja foi usada em 61,2%; hidrolisados, em 35,4%; e aminoácidos, em 3,3%. As médias de escore Z do IMC ao atendimento inicial e após três meses foram, respectivamente, -0,24±1,47DP e 0,00±1,26DP (p=0,251, quando em uso de soja, e -0,70±1,51DP e -0,14±1,36DP (p=0,322, em uso de hidrolisado. CONCLUSÕES: Manifestações digestórias da alergia ao leite de vaca foram preponderantes e determinaram maior comprometimento nutricional. As fórmulas de substituição ao leite de vaca mais utilizadas foram de proteína isolada de soja e hidrolisados proteicos. O uso de ambas foi importante para a manutenção do estado nutricional.

  16. Second generation Robo-AO instruments and systems

    Science.gov (United States)

    Baranec, Christoph; Riddle, Reed; Law, Nicholas M.; Chun, Mark R.; Lu, Jessica R.; Connelley, Michael S.; Hall, Donald; Atkinson, Dani; Jacobson, Shane

    2014-07-01

    The prototype Robo-AO system at the Palomar Observatory 1.5-m telescope is the world's first fully automated laser adaptive optics instrument. Scientific operations commenced in June 2012 and more than 12,000 observations have since been performed at the ~0.12" visible-light diffraction limit. Two new infrared cameras providing high-speed tip-tilt sensing and a 2' field-of-view will be integrated in 2014. In addition to a Robo-AO clone for the 2-m IGO and the natural guide star variant KAPAO at the 1-m Table Mountain telescope, a second generation of facility-class Robo-AO systems are in development for the 2.2-m University of Hawai'i and 3-m IRTF telescopes which will provide higher Strehl ratios, sharper imaging, ~0.07", and correction to λ = 400 nm.

  17. Second generation Robo-AO instruments and systems

    CERN Document Server

    Baranec, Christoph; Law, Nicholas M; Chun, Mark R; Lu, Jessica R; Connelley, Michael S; Hall, Donald; Atkinson, Dani; Jacobson, Shane

    2014-01-01

    The prototype Robo-AO system at the Palomar Observatory 1.5-m telescope is the world's first fully automated laser adaptive optics instrument. Scientific operations commenced in June 2012 and more than 12,000 observations have since been performed at the ~0.12" visible-light diffraction limit. Two new infrared cameras providing high-speed tip-tilt sensing and a 2' field-of-view will be integrated in 2014. In addition to a Robo-AO clone for the 2-m IGO and the natural guide star variant KAPAO at the 1-m Table Mountain telescope, a second generation of facility-class Robo-AO systems are in development for the 2.2-m University of Hawai'i and 3-m IRTF telescopes which will provide higher Strehl ratios, sharper imaging, ~0.07", and correction to {\\lambda} = 400 nm.

  18. A esquizofrenia ao longo da infância

    Directory of Open Access Journals (Sweden)

    Claude Bursztejn

    Full Text Available As pesquisas sobre os grupos “de alto risco” (filhos de pais esquizofrênicos, assim como os estudos prospectivos na população geral, mostram que os futuros esquizofrênicos apresentam, comparativamente aos sujeitos-controle, atrasos do desenvolvimento psicomotor, déficits cognitivos e algumas particularidades comportamentais. Tais dados parecem confirmar a idéia segundo a qual a esquizofrenia corresponderia a um distúrbio neurodesenvolvimental cuja expressão varia ao longo da vida. As especificidades clínicas e evolutivas dos raros casos de esquizofrenia iniciando-se na infância levam alguns autores a pensar que se trataria de uma entidade específica e cujo pertencimento ao “espectro autista” necessita ainda ser estudado.

  19. Beyond the Blur: Construction and Characterization of the First Autonomous AO System, and, An AO Survey of Magnetar Proper Motions

    Science.gov (United States)

    Tendulkar, Shriharsh Prakash

    Adaptive optics (AO) corrects distortions created by atmospheric turbulence and delivers diffraction-limited images on ground-based telescopes. The vastly improved spatial resolution and sensitivity has been utilized for studying everything from the magnetic fields of sunspots upto the internal dynamics of high-redshift galaxies. This thesis about AO science from small and large telescopes is divided into two parts: Robo-AO and magnetar kinematics. In the first part, I discuss the construction and performance of the world's first fully autonomous visible light AO system, Robo-AO, at the Palomar 60-inch telescope. Robo-AO operates extremely efficiently with an overhead Robo-AO is used to constrain the evolutionary models of low-mass pre-main-sequence stars by measuring resolved spectral energy distributions of stellar multiples in the visible band, more than doubling the current sample. I conclude this part with a discussion of possible future improvements to the Robo-AO system. In the second part, I describe a study of magnetar kinematics using high-resolution near-infrared (NIR) AO imaging from the 10-meter Keck II telescope. Measuring the proper motions of five magnetars with a precision of upto 0.7 milli-arcsecond/yr -1, we have more than tripled the previously known sample of magnetar proper motions and proved that magnetar kinematics are equivalent to those of radio pulsars. We conclusively showed that SGR 1900+14 and SGR 1806-20 were ejected from the stellar clusters with which they were traditionally associated. The inferred kinematic ages of these two magnetars are 6 +/- 1.8 kyr and 650 +/-3 00 yr respectively. These ages are a factor of three to four times greater than their respective characteristic ages. The calculated braking index is close to unity as compared to three for the vacuum dipole model and 2.5--2.8 as measured for young pulsars. I conclude this section by describing a search for NIR counterparts of new magnetars and a future promise of

  20. Huntingtin-associated protein 1 (HAP1) interacts with androgen receptor (AR) and suppresses SBMA-mutant-AR-induced apoptosis.

    Science.gov (United States)

    Takeshita, Yukio; Fujinaga, Ryutaro; Zhao, Changjiu; Yanai, Akie; Shinoda, Koh

    2006-08-01

    Huntingtin-associated protein 1 (HAP1), an interactor of huntingtin, has been known as an essential component of the stigmoid body (STB) and recently reported to play a protective role against neurodegeneration in Huntington's disease (HD). In the present study, subcellular association between HAP1 and androgen receptor (AR) with a long polyglutamine tract (polyQ) derived from spinal-and-bulbar-muscular-atrophy (SBMA) was examined using HEp-2 cells cotransfected with HAP1 and/or normal ARQ25, SBMA-mutant ARQ65 or deletion-mutant AR cDNAs. The results provided the first clear evidence that HAP1 interacts with AR through its ligand-binding domain in a polyQ-length-dependent manner and forms prominent inclusions sequestering polyQ-AR, and that addition of dihydrotestosterone reduces the association strength of HAP1 with ARQ25 more dramatically than that with ARQ65. Furthermore, SBMA-mutant-ARQ65-induced apoptosis was suppressed by cotransfection with HAP1. Our findings strongly suggest that HAP1/STB is relevant to polyQ-length-dependent modification on subcellular AR functions and critically involved in pathogenesis of not only HD but also SBMA as an important intrinsic neuroprotectant determining the threshold for cellular vulnerability to apoptosis. Taking together with previous reports that HAP1/STB is selectively expressed in the brain regions spared from degenerative targets in HD and SBMA, the current study might explain the region-specific occurrence of neurodegeneration in both diseases, shedding light on common aspects of their molecular pathological mechanism and yet-to-be-uncovered diagnostic or therapeutic applications for HD and SBMA patients.

  1. 40Ar/39Ar geochronology, paleomagnetism, and evolution of the Boring volcanic field, Oregon and Washington, USA

    Science.gov (United States)

    Fleck, Robert J.; Hagstrum, Jonathan T.; Calvert, Andrew T.; Evarts, Russell C.; Conrey, Richard M.

    2014-01-01

    The 40Ar/39Ar investigations of a large suite of fine-grained basaltic rocks of the Boring volcanic field (BVF), Oregon and Washington (USA), yielded two primary results. (1) Using age control from paleomagnetic polarity, stratigraphy, and available plateau ages, 40Ar/39Ar recoil model ages are defined that provide reliable age results in the absence of an age plateau, even in cases of significant Ar redistribution. (2) Grouping of eruptive ages either by period of activity or by composition defines a broadly northward progression of BVF volcanism during latest Pliocene and Pleistocene time that reflects rates consistent with regional plate movements. Based on the frequency distribution of measured ages, periods of greatest volcanic activity within the BVF occurred 2.7–2.2 Ma, 1.7–0.5 Ma, and 350–50 ka. Grouped by eruptive episode, geographic distributions of samples define a series of northeast-southwest–trending strips whose centers migrate from south-southeast to north-northwest at an average rate of 9.3 ± 1.6 mm/yr. Volcanic activity in the western part of the BVF migrated more rapidly than that to the east, causing trends of eruptive episodes to progress in an irregular, clockwise sense. The K2O and CaO values of dated samples exhibit well-defined temporal trends, decreasing and increasing, respectively, with age of eruption. Divided into two groups by K2O, the centers of these two distributions define a northward migration rate similar to that determined from eruptive age groups. This age and compositional migration rate of Boring volcanism is similar to the clockwise rotation rate of the Oregon Coast Range with respect to North America, and might reflect localized extension on the trailing edge of that rotating crustal block.

  2. Reconhecimento de aprendizagens ao longo da vida e empowerment

    OpenAIRE

    Miguel, Marta Cristina Trindade

    2015-01-01

    A narrativa atual de aprendizagem ao longo da vida apela à necessidade constante de aquisição de conhecimentos e competências para fazer face às constantes mudanças da sociedade moderna, reconhecendo que essas aprendizagens vão além da educação e formação formal, incluindo a aprendizagem decorrente da experiência de vida em diferentes contextos. O reconhecimento de aprendizagens prévias é um processo de avaliação dos conhecimentos e competências adquiridos ao longo da vida, permitindo que sej...

  3. Initial Performance of the Keck AO Wavefront Controller System

    Energy Technology Data Exchange (ETDEWEB)

    Johansson, E M; Acton, D S; An, J R; Avicola, K; Beeman, B V; Brase, J M; Carrano, C J; Gathright, J; Gavel, D T; Hurd, R L; Lai, O; Lupton, W; Macintosh, B A; Max, C E; Olivier, S S; Shelton, J C; Stomski, P J; Tsubota, K; Waltjen, K E; Watson, J A; Wizinowich, P L

    2001-03-01

    The wavefront controller for the Keck Observatory AO system consists of two separate real-time control loops: a tip-tilt control loop to remove tilt from the incoming wavefront, and a deformable mirror control loop to remove higher-order aberrations. In this paper, we describe these control loops and analyze their performance using diagnostic data acquired during the integration and testing of the AO system on the telescope. Disturbance rejection curves for the controllers are calculated from the experimental data and compared to theory. The residual wavefront errors due to control loop bandwidth are also calculated from the data, and possible improvements to the controller performance are discussed.

  4. High-Performance CCSDS AOS Protocol Implementation in FPGA

    Science.gov (United States)

    Clare, Loren P.; Torgerson, Jordan L.; Pang, Jackson

    2010-01-01

    The Consultative Committee for Space Data Systems (CCSDS) Advanced Orbiting Systems (AOS) space data link protocol provides a framing layer between channel coding such as LDPC (low-density parity-check) and higher-layer link multiplexing protocols such as CCSDS Encapsulation Service, which is described in the following article. Recent advancement in RF modem technology has allowed multi-megabit transmission over space links. With this increase in data rate, the CCSDS AOS protocol implementation needs to be optimized to both reduce energy consumption and operate at a high rate.

  5. LGS AO Science Impact: Present and Future Perspectives

    OpenAIRE

    Liu, Michael C.

    2008-01-01

    The recent advent of laser guide star adaptive optics (LGS AO) on the largest ground-based telescopes has enabled a wide range of high angular resolution science, previously infeasible from ground-based and/or space-based observatories. As a result, scientific productivity with LGS has seen enormous growth in the last few years, with a factor of ~10 leap in publication rate compared to the first decade of operation. Of the 54 refereed science papers to date from LGS AO, half have been publish...

  6. Development of a Low-Level Ar-37 Calibration Standard

    Energy Technology Data Exchange (ETDEWEB)

    Williams, Richard M.; Aalseth, Craig E.; Bowyer, Ted W.; Day, Anthony R.; Fuller, Erin S.; Haas, Derek A.; Hayes, James C.; Hoppe, Eric W.; Humble, Paul H.; Keillor, Martin E.; LaFerriere, Brian D.; Mace, Emily K.; McIntyre, Justin I.; Miley, Harry S.; Myers, Allan W.; Orrell, John L.; Overman, Cory T.; Panisko, Mark E.; Seifert, Allen

    2016-03-07

    Argon-37 is an important environmental signature of an underground nuclear explosion. Producing and quantifying low-level 37Ar standards is an important step in the development of sensitive field measurement instruments for use during an On-Site Inspection, a key provision of the Comprehensive Nuclear-Test-Ban Treaty. This paper describes progress at Pacific Northwest National Laboratory (PNNL) in the development of a process to generate and quantify low-level 37Ar standard material, which can then be used to calibrate sensitive field systems at activities consistent with soil background levels. The 37Ar used for our work was generated using a laboratory-scale, high-energy neutron source to irradiate powdered samples of calcium carbonate. Small aliquots of 37Ar were then extracted from the head space of the irradiated samples. The specific activity of the head space samples, mixed with P10 (90% stable argon:10% methane by mole fraction) count gas, is then derived using the accepted Length-Compensated Internal-Source Proportional Counting method. Due to the low activity of the samples, a set of three Ultra-Low Background Proportional-Counters designed and fabricated at PNNL from radio-pure electroformed copper was used to make the measurements in PNNL’s shallow underground counting laboratory. Very low background levels (<10 counts/day) have been observed in the spectral region near the 37Ar emission feature at 2.8 keV. Two separate samples from the same irradiation were measured. The first sample was counted for 12 days beginning 28 days after irradiation, the second sample was counted for 24 days beginning 70 days after irradiation (the half-life of 37Ar is 35.0 days). Both sets of measurements were analyzed and yielded very similar results for the starting activity (~0.1 Bq) and activity concentration (0.15 mBq/ccSTP argon) after P10 count gas was added. A detailed uncertainty model was developed based on the ISO Guide to the Expression of Uncertainty in

  7. A Prediction of the Damping Properties of Hindered Phenol AO-60/polyacrylate Rubber (AO-60/ACM) Composites through Molecular Dynamics Simulation

    Science.gov (United States)

    Yang, Da-Wei; Zhao, Xiu-Ying; Zhang, Geng; Li, Qiang-Guo; Wu, Si-Zhu

    2016-05-01

    Molecule dynamics (MD) simulation, a molecular-level method, was applied to predict the damping properties of AO-60/polyacrylate rubber (AO-60/ACM) composites before experimental measures were performed. MD simulation results revealed that two types of hydrogen bond, namely, type A (AO-60) -OH•••O=C- (ACM), type B (AO-60) - OH•••O=C- (AO-60) were formed. Then, the AO-60/ACM composites were fabricated and tested to verify the accuracy of the MD simulation through dynamic mechanical thermal analysis (DMTA). DMTA results showed that the introduction of AO-60 could remarkably improve the damping properties of the composites, including the increase of glass transition temperature (Tg) alongside with the loss factor (tan δ), also indicating the AO-60/ACM(98/100) had the best damping performance amongst the composites which verified by the experimental.

  8. Influência das características do ar na cinética de secagem de pimenta variedade bico

    Directory of Open Access Journals (Sweden)

    Douglas Rodrigues dos Reis

    2015-06-01

    Full Text Available ResumoA pimenta bico, pertencente à espécie Capsicum chinense, é muito utilizada na culinária brasileira no preparo de diversos pratos e também em conservas. Por se tratar de um alimento altamente perecível, faz-se necessária a utilização de métodos para a sua conservação, destacando-se o processo de secagem. O presente trabalho teve como objetivo determinar e analisar a cinética de secagem da pimenta bico em diferentes condições de temperatura e velocidade do ar de secagem. A pimenta foi submetida ao processo de secagem por meio de um secador de bandejas em camada delgada, com velocidade do ar de secagem controlada a 1,0; 1,5 e 2,0 m/s e temperatura de 40, 50 e 60 °C. As pimentas foram colocadas no interior do equipamento em bandejas removíveis de aço inoxidável e as amostras, pesadas periodicamente até o equilíbrio ser atingindo. Os modelos matemáticos de Page, Henderson e Pabis, Midilli e Kucuk, Thompson e Aproximação da difusão foram ajustados aos dados experimentais. O melhor ajuste foi determinado em função dos maiores valores do coeficiente de determinação (R2, menores valores de desvio médio relativo (P e do erro médio estimado (SE. Os resultados obtidos mostraram que a secagem da pimenta é influenciada pela velocidade e temperatura do ar de secagem, visto que quanto maior a temperatura do ar de secagem, mais rapidamente obtém-se o equilíbrio de umidade das amostras. O modelo de Midilli e Kucuk foi o que se ajustou melhor aos dados experimentais. Os valores de difusividade efetiva encontrados variam de 1,65 × 10–10 a 5,01 × 10–10 m2/s e a energia de ativação varia de 98,42 a 108,13 kJ/mol.

  9. Tolerância de porta-enxertos de videira ao alumínio do solo

    Directory of Open Access Journals (Sweden)

    José Carlos Fráguas

    1999-07-01

    Full Text Available Onze porta-enxertos e duas cultivares americanas de videira (Vitis spp foram avaliadas mediante níveis de saturação por Al no solo (Cambissolo Húmico álico, objetivando alcançar a tolerância diferenciada ao Al. O trabalho foi conduzido em casa de vegetação, com seis tratamentos completamente casualizados e quatro repetições, na Embrapa-Centro Nacional de Pesquisa de Uva e Vinho, em Bento Gonçalves, RS, no período de 1987 a 1990. As características avaliadas foram: altura das plantas, comprimento das raízes, peso da matéria seca da parte aérea e das raízes e teores de P, K, Ca e Mg em folhas e raízes. Diante dos acréscimos ou aumentos verificados em cada característica (variação % e por cultivar, foi possível estabelecer a tolerância diferenciada das cultivares. O teor de K na parte aérea não foi afetado pelos níveis de saturação por Al, enquanto os teores de Ca e Mg foram os mais afetados. O teor de P teve um comportamento estável entre os níveis de saturação por Al. As cultivares Isabel e Cunningham apresentaram diferença na tolerância ao Al do solo; a Cunningham teve melhor comportamento. Os porta-enxertos R99, Rupestris du Lot e Kober 5BB, juntamente com Isabel, foram os mais sensíveis ao Al, e P1103, 101-14 e 196-17Cl foram os mais tolerantes.

  10. Simulation of Carbon Nanotube Welding through Ar bombardment

    CERN Document Server

    Kucukkal, Mustafa U

    2014-01-01

    Single-walled carbon nanotubes show promise as nanoscale transistors, for nanocomputing applications. This use will require appropriate methods for creating electrical connections between distinct nanotubes, analogous to welding of metallic wires at larger length scales, but methods for performing nanoscale chemical welding are not yet sufficiently understood. This study examined the effect of Ar bombardment on the junction of two crossed single-walled carbon nanotubes, to understand the value and limitations of this method for generating connections between nanotubes. A geometric criterion was used to assess the quality of the junctions formed, with the goal of identifying the most productive conditions for experimental ion bombardment. In particular, the effects of nanotube chirality, Ar impact kinetic energy, impact particle flux and fluence, and annealing temperature were considered. The most productive bombardment conditions, leading to the most crosslinking of the tubes with the smallest loss of graphit...

  11. Ryoji Ikeda, Data Artist - Prix Ars Electronica Collide@CERN

    CERN Document Server

    CERN. Geneva; Koek, Ariane; Heuer, Rolf; Ikeda, Ryoji; Mr. Horst, Hoertner

    2014-01-01

    at the CERN Globe of Science and Innovation, CERN. You are very warmly invited to the opening presentation of Data Artist, Ryoji Ikeda’s residency at CERN. Ryoji Ikeda, one of the world’s leading electronic composers and visual artists, is the new Prix Ars Electronica Collide@CERN award winner. Ryoji Ikeda and his science inspiration partner, Theoretical Physicist, Dr. Tom Melia will talk about their work in arts and science. They are at the beginning of their creative journey together at CERN. A little about Ryoji Ikeda – the new Prix Ars Electronica Collide@CERN artist in residence. Ryoji Ikeda focuses on the essential characteristics of sound itself and that of visuals as light by means of both mathematical precision and mathematical aesthetics. Ikeda has gained a reputation as one of the few international artists working convincingly across both visual ...

  12. Medidas da umidade relativa do ar em um ambiente fechado

    Directory of Open Access Journals (Sweden)

    Costa Eden V.

    2003-01-01

    Full Text Available Umidade do ar e o vapor d'água presente na atmosfera. Neste trabalho medimos a umidade relativa do ar em um ambiente fechado onde a temperatura foi mantida constante. Nestas condições, a umidade cresce até o vapor d'água tornar-se saturado. Neste instante, a umidade é máxima. O aparato experimental utilizado consiste de recipiente fechado de vidro, higrômetro, termômetro e relógio. Trata-se, portanto, de um experimento simples, possível de ser realizado em um laboratório didático e capaz de preencher a lacuna dos livros de texto de física, que, em geral, negligenciam este tópico.

  13. Discurso y ejemplaridad en Ovidio, Ars 1.101-134

    OpenAIRE

    Schniebs, Alicia

    2012-01-01

    RÉSUMÉ Sur la base d’une analyse concernant l’intertextualité, l’intratextualité ainsi que lês rapports avec d’autres discours symboliques du contexte de production, le travail se propose d’étudier l’excursus de l’enlèvement des Sabines chez Ovide Ars 1.101- 134. Cette étude a pour but de déterminer la construction du lien exemplaire Romulus-Auguste impliqué dans le texte et sa relation avec cette même exemplaritélà dans le régime du principat. Mots-clés: exemplarité, Ovide, Ars amatoria, Rom...

  14. Progreso y retos de la geocronología 40Ar/39Ar en Costa Rica y Nicaragua Progress and Challenges Using 40Ar/39Ar Geochronology in Costa Rica and Nicaragua

    Directory of Open Access Journals (Sweden)

    Ian Saginor¹

    2011-12-01

    Full Text Available Con el principal objetivo de realizar mejores cálculos de la producción volcánica, en el Arco Volcánico de América Central, realizamos 61 dataciones 40Ar/39Ar en tefras y lavas en localidades de frente volcánico de Costa Rica y Nicaragua por medio de varias campañas de campo y análisis de laboratorio (preparación de muestras, envió al reactor nuclear, espectroscopía de masas de las muestras radiactivas, al laboratorio de gases nobles del Departamento de Ciencias de la Tierra y Planetarias de la Universidad Rutgers del 2002-2008. En este artículo presentamos diferentes observaciones que resultaron de este estudio donde se describe la precisión, exactitud y la confiabilidad de las edades 40Ar/39Ar. El primer resultado muestra las limitaciones de esta técnica en muestras baja en K2O con edades To better estimate the extrusive flux of the Central American Arc, from 2002-2008, we obtained sixty one high precision 40Ar/39Ar ages on geographically well-situated lavas and tephra from Costa Rica and Nicaragua. Here, we describe a number of observations encountered during this study using four examples that well document the precision, accuracy and general reliability of the 40Ar/39Ar ages. First, low K2O values, particularly in samples from Nicaragua, is a major limitation in or attempts to obtain reliable dates on samples under 1 My. Second, extensive weathering of samples due to the tropical climate of Central America has resulted in various levels of argon loss even when the hand sample appeared unaltered. Third, our field and geochronological data lead us to conclude that eruptive rates have not been constant over the past 15 to 20 My, but rather appears punctuated by gaps of up to several million years. We attempted to address the temporal gaps in several ways. First, geochemical analyses were used to identify samples that may have erupted during time periods without known volcanism. For example, U/Th values in the active Central

  15. Esporte, lazer e prevenção ao uso drogas: dos discursos equivocados aos caminhos possíveis

    OpenAIRE

    Romera, Liana Abrão

    2013-01-01

    Resumo: O presente artigo tem como objetivo questionar a maneira ingênua e simplistaque se estabelece entre prática esportiva e prevenção ao uso de drogas. É comum aconstatação de um imaginário que atribui às praticas esportivas o poder mágico de“livrar os jovens das drogas” especialmente presente nos programas sociais que têm noesporte e lazer seu instrumento de intervenção socioeducativa. Ao colocar em xequealguns desses pressupostos do senso comum, o artigo desenvolve-se a partir dadescons...

  16. Apple fruit copper amine oxidase isoforms: peroxisomal MdAO1 prefers diamines as substrates, whereas extracellular MdAO2 exclusively utilizes monoamines.

    Science.gov (United States)

    Zarei, Adel; Trobacher, Christopher P; Cooke, Alison R; Meyers, Ashley J; Hall, J Christopher; Shelp, Barry J

    2015-01-01

    4-Aminobutyrate (GABA) accumulates in apple fruit during controlled atmosphere storage. A potential source of GABA is the polyamine putrescine, which can be oxidized via copper-containing amine oxidase (CuAO), resulting in the production 4-aminobutanal/Δ(1)-pyrroline, with the consumption of O2 and release of H2O2 and ammonia. Five putative CuAO genes (MdAO genes) were cloned from apple (Malus domestica Borkh. cv. Empire) fruit, and the deduced amino acid sequences found to contain the active sites typically conserved in CuAOs. Genes encoding two of these enzymes, MdAO1 and MdAO2, were highly expressed in apple fruit and selected for further analysis. Amino acid sequence analysis predicted the presence of a C-terminal peroxisomal targeting signal 1 tripeptide in MdAO1 and an N-terminal signal peptide and N-glycosylation site in MdAO2. Transient expression of green fluorescent fusion proteins in Arabidopsis protoplasts or onion epidermal cells revealed a peroxisomal localization for MdAO1 and an extracellular localization for MdAO2. The enzymatic activities of purified recombinant MdAO1 and MdAO2 were measured continuously as H2O2 production using a coupled reaction. MdAO1 did not use monoamines or polyamines and displayed high catalytic efficiency for 1,3-diaminopropane, putrescine and cadaverine, whereas MdAO2 exclusively utilized aliphatic and aromatic monoamines, including 2-phenylethylamine and tyramine. Together, these results indicate that MdAO1 may contribute to GABA production via putrescine oxidation in the peroxisome of apple fruit under controlled atmosphere conditions. MdAO2 seems to be involved in deamination of 2-phenylethylamine, which is a step in the biosynthesis of 2-phenylethanol, a contributor to fruit flavor and flower fragrance.

  17. Constraining the alteration history of a Late Cretaceous Patagonian volcaniclastic bentonite-ash-mudstone sequence using K-Ar and 40Ar/39Ar isotopes

    Science.gov (United States)

    Warr, L. N.; Hofmann, H.; van der Pluijm, B. A.

    2017-01-01

    Smectite is typically considered unsuitable for radiometric dating, as argon (40Ar) produced from decay of exchangeable potassium (40K) located in the interlayer sites can be lost during fluid-rock interaction and/or during wet sample preparation in the laboratory. However, age analysis of Late Cretaceous Argentinian bentonites and associated volcaniclastic rocks from Lago Pellegrini, Northern Patagonia, indicates that, in the case of these very low-permeability rocks, the radioactive 40Ar was retained and thus can provide information on smectite age and the timing of rock alteration. This study presents isotopic results that indicate the ash-to-bentonite conversion and alteration of the overlying tuffaceous mudstones in Northern Patagonia was complete 13-17 my after middle Campanian sedimentation when the system isotopically closed. The general absence of illite in these smectite-rich lithologies reflects the low activity of K and the low temperature (<60 °C) of the formation waters that altered the parent ash.

  18. Infrared absorption spectroscopy of CO 2-Ar complexes

    Science.gov (United States)

    Sharpe, S. W.; Sheeks, R.; Wittig, C.; Beaudet, R. A.

    1988-10-01

    The ν 4 rovibrational band of CO 2-Ar near 2350 cm -1 (i.e. CO 2 asymmetric stretch) has been recorded in absorption at 8 K using a tunable diode laser. Rotational constants for both ν 4=0 and 1 are very similar, and indicate a T-shaped geometry. It was not possible to detect this species mass spectrometrically (18-70 eV electrons), indicating extensive fragmentation.

  19. BUSINESS ETHICS: THE CASE OF AR CONSULTORIA LTD A

    Directory of Open Access Journals (Sweden)

    Fernando Fantoni Bencke

    2014-03-01

    business: the significant taxes, lack of incentives and credit available and the opportunity to “make a little extra” through informal sales. AR Consultoria’s entry to the market was marked by these and other difficulties. This case aims at presenting a real situation that can be found in some organizational sectors areas, which demands readers to take a decision and an ethical stance when faced with moral challenges.

  20. Secondary scintillation in Ar-CF$_4$ mixtures

    CERN Document Server

    Beschi, Andrea

    2015-01-01

    In order to build a optical time projection chamber that can be used as a tracking detector, it is necessary to study the scintillation proprieties of gases in order to optimize the light emission. A detailed study of the scintillation of Ar-CF$_4$ mixtures at different concentrations has been performed to study the light emission of the gas in a triple GEM detector.

  1. arXiv in the classical Russian literature

    CERN Document Server

    Silagadze, Z K

    2012-01-01

    The creation of arXiv, a highly democratic open access repository of research papers in high-energy physics more than twenty years ago was undoubtedly the most spectacular and landmark event for the high-energy physics community. However, we report a curious observation which indicates that the general cultural significance of this event extends far beyond the boundaries assumed at the beginning.

  2. Immune epitope database analysis resource (IEDB-AR)

    DEFF Research Database (Denmark)

    Zhang, Qing; Wang, Peng; Kim, Yohan;

    2008-01-01

    We present a new release of the immune epitope database analysis resource (IEDB-AR, http://tools.immuneepitope.org), a repository of web-based tools for the prediction and analysis of immune epitopes. New functionalities have been added to most of the previously implemented tools, and a total...... of eight new tools were added, including two B-cell epitope prediction tools, four T-cell epitope prediction tools and two analysis tools....

  3. Selective AR Modulators that Distinguish Proliferative from Differentiative Gene Promoters

    Science.gov (United States)

    2015-08-01

    dependent compound screen, aided by the University of Michigan Center for Chemical Genomics . Differential AR activation in transfected cells was assessed...WR, Parker JS, Lee MX, Kass EM, Spratt DE, Iaquinta PJ, Arora VK, Yen WF, Cai L, Zheng D, Carver BS, Chen Y, Watson PA, Shah NP, Fujisawa S, Goglia...for known genes and genome -wide by ChIP-seq. Results will strengthen our overall hypothesis that genes with similar function (i.e

  4. On some Polychaetous Annelids from Curaçao

    NARCIS (Netherlands)

    Horst, R.

    1922-01-01

    Though we know already a rather large number of Polychaetous Annelids from the Caribbean Sea, hitherto, as far as I know, no Annelids have been described from the coast of the island Curaçao and I therefore was very glad, that my colleague Dr. VAN DER HORST kindly placed in my hands for identificati

  5. Bringing the Visible Universe into Focus with Robo-AO

    CERN Document Server

    Baranec, Christoph; Law, Nicholas M; Ramaprakash, A N; Tendulkar, Shriharsh P; Bui, Khanh; Burse, Mahesh P; Chordia, Pravin; Das, Hillol K; Davis, Jack T C; Dekany, Richard G; Kasliwal, Mansi M; Kulkarni, Shrinivas R; Morton, Timothy D; Ofek, Eran O; Punnadi, Sujit; 10.3791/50021

    2013-01-01

    Light from astronomical objects must travel through the earth's turbulent atmosphere before it can be imaged by ground-based telescopes. To enable direct imaging at maximum theoretical angular resolution, advanced techniques such as those employed by the Robo-AO adaptive-optics system must be used.

  6. Adesão ao tratamento da ambliopia

    Directory of Open Access Journals (Sweden)

    Arakaki Mara Regina

    2004-01-01

    Full Text Available OBJETIVO: Avaliar a influência da adesão no resultado do tratamento da ambliopia. MÉTODOS: Foi feito estudo retrospectivo avaliando a resposta ao tratamento da ambliopia em 151 crianças portadoras de ambliopia, tratadas com esquema de oclusão diária, com o número de dias variando de acordo com a idade da criança. Os pacientes foram separados em dois grupos que diferiam entre si pela adesão ou não ao tratamento. RESULTADOS: Observou-se que o tratamento teve melhores resultados nas crianças de 4 a 7 anos e que aderiram ao tratamento; as crianças que aderiram ao tratamento necessitaram de tempo menor de permanência em tratamento. Mesmo crianças com idade superior a 7 anos tiveram resultados positivos com a oclusão. CONCLUSÃO:O tratamento oclusivo é um meio terapêutico eficiente desde que haja a cooperação do paciente.

  7. Reptiles and Amphibians of Curaçao

    NARCIS (Netherlands)

    Rooij, de Nelly

    1922-01-01

    The Zoological Museum of Amsterdam received some collections of reptiles from Curaçao made by Dr. J. BOEKE in 1905, by Dr. C. J. VAN DER HORST in 1920 and by Mr. G. J. H. MOLENGRAAFF „Engineer” in 1921. I had the opportunity of studying them and will here give an enumeration of all the reptiles know

  8. Resposta ao estresse: II. Resiliência e vulnerabilidade

    Directory of Open Access Journals (Sweden)

    Nicole Leite Galvão-Coelho

    2015-06-01

    Full Text Available ResumoA crescente exposição a estressores na vida cotidiana aumentou significativamente a investigação da resposta ao estresse nas duas últimas décadas. Embora associada a consequências negativas, pois muitas patologias físicas e mentais são desencadeadas por exposição crônica a estressores, esta resposta é indispensável para sobrevivencia do indivíduo e é extremamente adaptativa quando ativada de forma aguda. Na parte I desta revisão foram abordados os conceitos de homestase e alostase e os sistemas fisiológicos ativados durante a resposta ao estresse. Na parte II serão discutidos fatores que modulam a resposta ao estresse tais como sexo, temperamento, períodos críticos do desenvolvimento e a presença ou ausência de suporte social. A interação entre os fatores genéticos e ambientais gera os perfis da resposta psicofisiológica que caracterizam os fenótipos de susceptibilidade e resiliência frente aos estressores e sua relação com uma patologia mental cada vez mais presente na sociedade moderna, o transtorno de estresse pós-traumático.

  9. Transfer ionization of the isocharge sequence ion and Ar collisions

    Institute of Scientific and Technical Information of China (English)

    Cai Xiao-Hong; Yu De-Yang; Cao Zhu-Rong; Lu Rong-Chun; Yang Wei; Shao Cao-Jie; Chen Xi-Meng

    2004-01-01

    The ratios of transfer ionization to single capture for isocharge Cq+, Nq+, Oq+, Neq+ ions on Ar atoms are measured by using position-sensitive and time-of-flight techniques. It is found that the ratio R1 increases with nuclear charge Z in a q=4 sequence, and the ratio R1 sequences have the minimum values at Z=7 and Z=8 in q=5 and q=6 sequences, respectively, and the ratio R1 decreases with the increase in the nuclear charge Z in a q=7 sequence. The results may be explained within the frame of the statistical model. It may be concluded that the transfer ionization depends remarkably upon the electronic structure of the projectile. The projectiles used in this study have the same charge state and velocity, but different electronic structures. The dependence of the ratio R1 on q is studied for Neq+-Ar collisions. The ratio R1 is found to increase as q increases for Neq+-Ar collisions. The measured dependence of the ratio R1 on q is compared with the calculation using the molecular Coulomb over-barrier model.

  10. Production of Ar metastables in a dielectric barrier discharge

    Science.gov (United States)

    Mikheyev, Pavel A.; Han, Jiande; Clark, Amanda; Sanderson, Carl; Heaven, Michael C.

    2017-01-01

    The results of experiments with a dielectric barrier discharge (DBD) are presented, where the production of metastable argon atoms was studied. The recently proposed optically pumped all-rare-gas laser (OPRGL) utilizes metastable atoms of heavier rare gases as lasing species. The required number density of metastables for efficient laser operation is 1012÷1013 cm-3 in an atmospheric pressure of He buffer gas. Recent experiments had shown that such densities are easily produced in a nanosecond pulsed discharge, even at pressures larger than atmospheric, but problems appear when one is trying to produce them in a CW regime. The reason for difficulties in the CW production of metastables at an atmospheric pressure seems to be the low value of the E/N parameter (DBD in 2-5% Ar mixture with He at an atmospheric pressure was studied. [Ar(1s5)] number density of the order of 1012 cm-3 was readily achieved. Temporal behavior of [Ar(1s5)] throughout the DBD cycle was obtained. The results demonstrate the feasibility of DBDs for OPRGL development.

  11. Electrical properties and dielectric spectroscopy of Ar+ implanted polycarbonate

    Science.gov (United States)

    Chawla, Mahak; Shekhawat, Nidhi; Aggarwal, Sanjeev; Sharma, Annu; Nair, K. G. M.

    2015-05-01

    The aim of the present paper is to study the effect of argon ion implantation on electrical and dielectric properties of polycarbonate. Specimens were implanted with 130 keV Ar+ ions in the fluence ranging from 1×1014 to 1×1016 ions cm-2. The beam current used was ˜0.40 µA cm-2. The electrical conduction behaviour of virgin and Ar+ implanted polycarbonate specimens have been studied through current-voltage (I-V characteristic) measurements. It has been observed that after implantation conductivity increases with increasing ion fluence. The dielectric spectroscopy of these specimens has been done in the frequency range of 100 kHz-100 MHz. Relaxation processes were studied by Cole-Cole plot of complex permittivity (real part of complex permittivity, ɛ' vs. imaginary part of complex permittivity, ɛ″). The Cole-Cole plots have also been used to determine static dielectric constant (ɛs), optical dielectric constant (ɛ∞), spreading factor (α), average relaxation time (τ0) and molecular relaxation time (τ). The dielectric behaviour has been found to be significantly affected due to Ar+ implantation. The possible correlation between this behaviour and the changes induced by the implantation has been discussed.

  12. Análise de Fourier e Wavelets aplicada à temperatura do ar em diferentes tipologias de ocupação

    Directory of Open Access Journals (Sweden)

    Maricéia T. Vilani

    2013-12-01

    Full Text Available Comumente, séries temporais de temperatura do ar são usadas nos estudos de clima devido à natureza temporal de seus sinais, que requerem investigações baseadas no espaço tempo-frequência a fim de revelar características espectrais em função do tempo. A transformada Wavelet fornece a representação precisa de um sinal em função do tempo e da frequência, simultaneamente, além de permitir analisar qualquer tipo de sinal ao qual a Série de Fourier se limita em determinadas análises. Desta forma, o presente trabalho fez uma análise da série temporal da temperatura do ar utilizando a série de Fourier e a transformada de Wavelet em quatro pontos, três de área urbana e um de área rural, em 2007. A intensidade de energia na alta escala de frequência para a temperatura do ar foi 24 h verificando-se potências significativas no decorrer do ano todo, nas escalas temporais de 2 a 32 dias, para os quatro pontos de estudo cuja variância mais acentuada foi no centro da área urbana.

  13. Escoamento de ar através de embalagens de polapa de frutas em caixas comerciais: efeito sobre os perfis de velocidade em túneis de congelamento

    Directory of Open Access Journals (Sweden)

    Resende Jaime Vilela de

    2002-01-01

    Full Text Available As variações nas velocidades do ar causadas pela resistência ao escoamento em função da quantidade de embalagens de polpa de frutas (100g, acondicionadas em caixas comerciais durante o processo de congelamento, foram avaliadas e as vazões estimadas, com base em um método de tratamento dos dados experimentais. As velocidades foram medidas antes da passagem do ar pelo empilhamento de caixas na câmara. As medições foram analisadas utilizando-se uma rotina de regressão não linear e as vazões determinadas pelo método de integração numérica dos perfis das velocidades ajustadas. O método apresentou estimação 10% superior à encontrada pelo método tradicional. Mantendo as condições operacionais do ventilador constantes, a vazão para arranjos de sete camadas resultou ser 62% inferior à de três camadas e, 50,9% inferior à de cinco camadas. Estes valores foram proporcionais à redução do espaço livre para escoamento do ar.

  14. Estudo exploratorio da qualidade do ar em escolas de educacao basica, Coimbra, Portugal

    Directory of Open Access Journals (Sweden)

    Ana Maria Conceicao Ferreira

    2013-12-01

    Full Text Available OBJETIVO : Analisar a qualidade do ar em escolas de educação básica e suas condições estruturais e funcionais. MÉTODOS : Foi avaliada a qualidade do ar de 51 escolas (81 salas de aula de educação básica da cidade de Coimbra, Portugal, tanto na parte interior das salas como na exterior, durante as quatro estações do ano, de 2010 a 2011. Foram avaliadas a temperatura (Tº, umidade relativa (Hr, concentrações de monóxido de carbono (CO, dióxido de carbono (CO 2 , ozona (O 3 , dióxido de nitrogênio (NO 2 , dióxido de enxofre (SO 2 , compostos orgânicos voláteis (COV, formaldeído e material particulado (PM 10 , de novembro de 2010 a fevereiro de 2011 (outono/inverno e de março de 2011 a junho de 2011 (primavera/verão. Procedeu-se ao preenchimento de uma grelha de caracterização das condições estruturais e funcionais das escolas. Aplicaram-se os testes estatísticos t- Student para amostras emparelhadas e o teste t de Wilcoxon. RESULTADOS : Em 47 escolas, as concentrações médias de CO 2 encontravam-se acima da concentração máxima de referência (984 ppm mencionada na legislação portuguesa. Os valores máximos de concentração encontrados no interior das salas foram críticos, principalmente no outono/inverno (5.320 ppm. As concentrações médias de COV e de PM 10 no interior ultrapassaram a concentração máxima de referência legislada em algumas escolas. Não foram detetados valores relevantes (risco de CO, formaldeído, NO 2 , SO 2 e O 3 . CONCLUSÕES : Houve maior concentração de poluentes no interior das salas, comparativamente com o exterior. A inadequada ventilação está associada à elevada concentração de CO 2 nas salas de aula.

  15. Microclima e produção da uva de mesa 'Niagara Rosada' conduzida em espaldeira a céu aberto e em manjedoura na forma de "Y" sob cobertura de telado plástico

    Directory of Open Access Journals (Sweden)

    Mário José Pedro Júnior

    2011-10-01

    Full Text Available Foi desenvolvido um experimento em vinhedos de 'Niagara Rosada', conduzidos em espaldeira e em manjedoura na forma de Y com cobertura de telado plástico, visando a comparar as alterações microclimáticas induzidas pelo sistema de condução e uso de telado plástico, e o efeito na produtividade das videiras. Entre os parâmetros microclimáticos avaliados, apenas a radiação solar foi atenuada pelo telado plástico em cerca de 20%, acima do dossel, tendo sido transmitido para a altura do cacho, cerca de 41% da radiação solar no sistema em Y sob telado plástico e 21% no espaldeira. As temperaturas máximas e mínimas foram semelhantes em ambos os sistemas. A produção por planta e a massa dos cachos foram mais elevadas no sistema em Y sob telado plástico, em comparação ao espaldeira.

  16. 40Ar/39Ar Dating of Zn-Pb-Ag Mineralization in the Northern Brooks Range, Alaska

    Science.gov (United States)

    Werdon, Melanie B.; Layer, Paul W.; Newberry, Rainer J.

    2004-01-01

    The 40Ar/39Ar laser step-heating method potentially can be used to provide absolute ages for a number of formerly undatable, low-temperature ore deposits. This study demonstrates the use of this method by determining absolute ages for Zn-Pb-Ag sediment-hosted massive sulfide deposits and vein-breccia occurrences found throughout a 300-km-long, east-west-trending belt in the northern Brooks Range, Alaska. Massive sulfide deposits are hosted by Mississippian to Pennsylvanian(?) black carbonaceous shale, siliceous mudstone, and lesser chert and carbonate turbidites of the Kuna Formation (e.g., Red Dog, Anarraaq, Lik (Su), and Drenchwater). The vein-breccia occurrences (e.g., Husky, Story Creek, West Kivliktort Mountain, Vidlee, and Kady) are hosted by a deformed but only weakly metamorphosed package of Upper Devonian to Lower Mississippian mixed continental and marine clastic rocks (the Endicott Group) that stratigraphically underlie the Kuna Formation. The vein-breccias are mineralogically similar to, but not spatially associated with, known massive sulfide deposits. The region's largest shale-hosted massive sulfide deposit is Red Dog; it has reserves of 148 Mt grading 16.6 percent zinc, 4.5 percent lead, and 77 g of silver per tonne. Hydrothermally produced white mica in a whole-rock sample from a sulfide-bearing igneous sill within the Red Dog deposit yielded a plateau age of 314.5 Ma. The plateau age of this whole-rock sample records the time at which temperatures cooled below the argon closure temperature of the white mica and is interpreted to represent the minimum age limit for massive sulfide-related hydrothermal activity in the Red Dog deposit. Sulfide-bearing quartz veins at Drenchwater crosscut a hypabyssal intrusion with a maximum biotite age of 337.0 Ma. Despite relatively low sulfide deposition temperatures in the vein-breccia occurrences (162°-251°C), detrital white mica in sandstone immediately adjacent to large vein-breccia zones was partially to

  17. Charge-exchange, ionization and excitation in low-energy Li$^{+}-$ Ar, K$^{+}-$ Ar, and Na$^{+}-$He collisions

    CERN Document Server

    Lomsadze, Ramaz A; Kezerashvili, RomanYa; Schulz, Michael

    2016-01-01

    Absolute cross sections are measured for charge-exchange, ionization, and excitation within the same experimental setup for the Li$^{+}-$Ar, K$^{+}-$ Ar, and Na$^{+}-$ He collisions in the ion energy range $0.5-10$ keV. Results of our measurements along with existing experimental data and the schematic correlation diagrams are used to analyze and determine the mechanisms for these processes. The experimental results show that the charge-exchange processes are realized with high probabilities and electrons are predominately captured in ground states. The cross section ratio for charge exchange, ionization and excitation processes roughly attains the value $10:2:1$, respectively. The contributions of various partial inelastic channels to the total ionization cross sections are estimated and a primary mechanism for the process is defined. The energy-loss spectrum, in addition, is applied to estimate the relative contribution of different inelastic channels and to determine the mechanisms for the ionization and f...

  18. 40Ar/39Ar dating of shear deformation of the Xianshuihe fault zone in west Sichuan and its tectonic significance

    Institute of Scientific and Technical Information of China (English)

    ZHANG; Yueqiao; CHEN; Wen; YANG; Nong

    2004-01-01

    Based on field geological survey, structural measurements and classical 40Ar/39Ar dating of mica, biotite and K-feldspar, we obtain cooling ages for Miocene left-lateral shear along the Xianshuihe fault zone. The results document two thermal events during the sinistral shear.The early event (12-10 Ma) corresponds to rapid cooling of the Zheduoshan granitic massif from above 700℃ to below 350℃. The late event (5-3.5 Ma) corresponds to cooling of granites intruded along the eastern side of the fault zone. These dating results provide important thermochronological constraint on the timing of late Cenozoic eastward extrusion of the Chuan-Dian Block in the SE Tibetan margin.

  19. Emplacement of Amba Dongar Carbonatite-alkaline Complex at Cretaceous/Tertiary Boundary: Evidence from 40Ar-39Ar Chronology

    Indian Academy of Sciences (India)

    Jyotiranjan S Ray; Kanchan Pande; T R Venkatesan

    2000-03-01

    40Ar-39Ar analyses of three fresh alkaline rock samples and a phlogopite separate from a carbonatite from Amba Dongar carbonatite-alkaline complex of the Deccan Flood Basalt Province, India, yield indistinguishable precise plateau ages of 64.8 ± 0.6, 64.7 ± 0.5, 65.5 ± 0.8 and 65.3 ± 0.6 Ma, giving a mean plateau age of 65.0 ± 0.3 Ma, which is the age of emplacement of this complex. This age implies contemporaneity of Amba Dongar with several other carbonatite-alkaline activities of Chhota Udaipur subprovince and is consistent with their Reunion-Deccan plume origin hypothesis. The emplacement of these complexes at 65 Ma makes them very significant in the ongoing debate on the K/T extinctions owing to their capacity to rapidly inject a substantial amount of CO2 and SO2 into the atmosphere.

  20. Age of the youngest volcanism at Eagle Lake, northeastern California—40Ar/39Ar and paleomagnetic results

    Science.gov (United States)

    Clynne, Michael A.; Calvert, Andrew T.; Champion, Duane E.; Muffler, L.J.P.; Sawlan, Michael G.; Downs, Drew T.

    2017-03-22

    The age of the youngest volcanism at Eagle Lake, California, was investigated using stratigraphic, paleomagnetic, and 40Ar/39Ar techniques. The three youngest volcanic lava flows at Eagle Lake yielded ages of 130.0±5.1, 127.5±3.2 and 123.6±18.7 ka, and are statistically indistinguishable. Paleomagnetic results demonstrate that two of the lava flows are very closely spaced in time, whereas the third is different by centuries to at most a few millennia. These results indicate that the basalt lava flows at Eagle Lake are not Holocene in age, and were erupted during an episode of volcanism at about 130–125 ka that is unlikely to have spanned more than a few thousand years. Thus, the short-term potential for subsequent volcanism at Eagle Lake is considered low. 

  1. Alergia ao látex em profissionais de saúde de São Paulo, Brasil Latex allergy in healthcare professionals in the State of Sao Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Leticia Nunes Montalvão

    2008-06-01

    Full Text Available FUNDAMENTOS: Alergia ao látex é comum em trabalhadores da saúde, resultando em absenteísmo e afastamento das atividades profissionais. Há no Brasil poucos estudos publicados sobre o assunto. Enquanto na população geral a prevalência de alergia ao látex é menor que 2%, nos profissionais de saúde pode chegar a 30%. OBJETIVO: Estudar a prevalência de alergia ao látex em profissionais de saúde do Hospital do Servidor Público Estadual de São Paulo. MÉTODOS: Foi aplicado questionário aberto a profissionais que têm contato com luvas de borracha em todos os serviços do hospital. Foi colhido sangue daqueles que referiram sintomas e dosado anticorpo IgE específico por meio do ImmunoCAP. Para análise estatística utilizaram-se porcentagens, tabelas e teste qui-quadrado. RESULTADOS: Foram distribuídos 2.349 questionários, e respondidos 1.045, dos quais 129 referiram correlação entre uso de látex e sintomas sugestivos de alergia, e 54 permitiram a coleta de sangue para determinação de IgE específica. Neste grupo houve dois casos em que foi demonstrado anticorpo específico, estabelecendo-se prevalência de 3,7% de alergia ao látex. Fatores como gênero, profissão, freqüência de contato com luvas, setor de trabalho e antecedentes de atopia foram relacionados com maior prevalência de alergia ao látex. CONCLUSÃO: A prevalência de alergia ao látex encontrada foi de 3,7%.BACKGROUND: Latex allergy is common among healthcare workers and leads to absence from work and withdraw from professional activities. There are few studies published in Brazil on this subject. In the general population the prevalence of allergy to latex is less than 2%, whereas in healthcare workers it may reach 30%. OBJECTIVE: To study the prevalence of latex allergy in healthcare workers at the Hospital do Servidor Público Estadual de São Paulo. METHODS: A self-administered questionnaire was distributed to healthcare professionals from any sector of the

  2. Chromosomal context and replication properties of ARS plasmids in Schizosaccharomyces pombe

    Indian Academy of Sciences (India)

    Aditya S Pratihar; Vishnu P Tripathi; Mukesh P Yadav; Dharani D Dubey

    2015-12-01

    Short, specific DNA sequences called as Autonomously Replicating Sequence (ARS) elements function as plasmid as well as chromosomal replication origins in yeasts. As compared to ARSs, different chromosomal origins vary greatly in their efficiency and timing of replication probably due to their wider chromosomal context. The two Schizosaccharomyces pombe ARS elements, ars727 and ars2OO4, represent two extremities in their chromosomal origin activity - ars727 is inactive and late replicating, while ars2OO4 is a highly active, early-firing origin. To determine the effect of chromosomal context on the activity of these ARS elements, we have cloned them with their extended chromosomal context as well as in the context of each other in both orientations and analysed their replication efficiency by ARS and plasmid stability assays. We found that these ARS elements retain their origin activity in their extended/altered context. However, deletion of a 133-bp region of the previously reported ars727-associated late replication enforcing element (LRE) caused advancement in replication timing of the resulting plasmid. These results confirm the role of LRE in directing plasmid replication timing and suggest that the plasmid origin efficiency of ars2OO4 or ars727 remains unaltered by the extended chromosomal context.

  3. 75 FR 30750 - Drawbridge Operation Regulation; Arkansas Waterway, Little Rock, AR

    Science.gov (United States)

    2010-06-02

    ..., Little Rock, AR AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking. SUMMARY: The Coast Guard... Waterway at mile 119.6 at Little Rock, AR, so that vessel operators will contact the remote drawbridge... the Baring Cross Railroad Drawbridge, mile 119.6, at Little Rock, AR is maintained in the...

  4. File list: Oth.ALL.20.AR.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.ALL.20.AR.AllCell hg19 TFs and others AR All cell types SRX595676,SRX595671,SRX...736053,SRX502068,SRX092448,SRX092447,SRX861678,SRX147604,SRX1033268 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.ALL.20.AR.AllCell.bed ...

  5. File list: Oth.Brs.05.AR.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Brs.05.AR.AllCell hg19 TFs and others AR Breast SRX1339020,SRX1339018,SRX250092...,SRX1339019,SRX1339016,SRX1339017,SRX1339015 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Brs.05.AR.AllCell.bed ...

  6. 75 FR 29656 - Amendment of Class E Airspace; Mountain View, AR

    Science.gov (United States)

    2010-05-27

    ... Federal Aviation Administration 14 CFR Part 71 Amendment of Class E Airspace; Mountain View, AR AGENCY... airspace for Mountain View, AR. Decommissioning of the Wilcox non-directional beacon (NDB) at Mountain View Wilcox Memorial Field Airport, Mountain View, AR, has made this action necessary to enhance the...

  7. Geochemical and 40Ar/39Ar constraints on the evolution of volcanism in the Woodlark Rift, Papua New Guinea

    Science.gov (United States)

    Catalano, Joseph P.

    The tectonic mechanisms producing Pliocene to active volcanism in eastern Papua New Guinea (PNG) have been debated for decades. In order to assess mechanisms that produce volcanism in the Woodlark Rift, we evaluate the evolution of volcanism in eastern PNG using 40Ar/39Ar thermochronology and whole rock geochemistry. Active volcanism in southeastern Papua New Guinea occurs on the Papuan Peninsula (Mt. Lamington, Mt. Victory and Waiwa), in the Woodlark Rift (Dobu Island, SE Goodenough Island, and Western Fergusson Island), and in the Woodlark Basin. In the Woodlark Basin, seafloor spreading is active and decompression melting of the upper mantle is producing basaltic magmatism. However, the cause of Pliocene and younger volcanism in the Woodlark Rift is controversial. Two hypotheses for the tectonic setting have been proposed to explain Pliocene and younger volcanism in the Woodlark Rift: (1) southward subduction of Solomon Sea lithosphere beneath eastern PNG at the Trobriand Tough and (2) decompression melting of mantle, previously modified by subduction, as the lithosphere undergoes extension associated with the opening of the Woodlark Basin. A comparison of 40Ar/39Ar ages with high field strength element (HFSE) concentrations in primary magmas indicates that HFSE concentrations correlate with age in the Woodlark rift. These data support the hypothesis that Pliocene to active volcanism in the Woodlark Rise and D'Entrecasteaux Islands results from decompression melting of a relict mantle wedge. The subduction zone geochemical signatures (negative HFSE anomalies) in Woodlark Rift lavas younger than 4 m.y. are a relict from older subduction beneath eastern Papua, likely in the middle Miocene. As the lithosphere is extended ahead of the tip of the westward propagating seafloor spreading center in the Woodlark Basin, the composition of volcanism is inherited from prior arc magmatism (via flux melting) and through time evolves toward magmatism associated with a rifting

  8. Detailed 40Ar/39Ar dating of geologic events associated with the Mantos Blancos copper deposit, northern Chile

    Science.gov (United States)

    Oliveros, Verónica; Féraud, Gilbert; Aguirre, Luis; Ramírez, Luis; Fornari, Michel; Palacios, Carlos; Parada, Miguel

    2008-03-01

    The 40Ar/39Ar geochronological method was applied to date magmatic and hydrothermal alteration events in the Mantos Blancos mining district in the Coastal Cordillera of northern Chile, allowing the distinction of two separate mineralization events. The Late Jurassic Mantos Blancos orebody, hosted in Jurassic volcanic rocks, is a magmatic-hydrothermal breccia-style Cu deposit. Two superimposed mineralization events have been recently proposed. The first event is accompanied by a phyllic hydrothermal alteration affecting a rhyolitic dome. The second mineralization event is related to the intrusion of bimodal stocks and sills inside the deposit. Because of the superposition of several magmatic and hydrothermal events, the obtained 40Ar/39Ar age data are complex; however, with a careful interpretation of the age spectra, it is possible to detect complex histories of successive emplacement, alteration, mineralization, and thermal resetting. The extrusion of Jurassic basic to intermediate volcanic rocks of the La Negra Formation is dated at 156.3 ± 1.4 Ma (2 σ) using plagioclase from an andesitic lava flow. The first mineralization event and associated phyllic alteration affecting the rhyolitic dome occurred around 155-156 Ma. A younger bimodal intrusive event, supposed to be equivalent to the bimodal stock and sill system inside the deposit, is probably responsible for the second mineralization event dated at ca. 142 Ma. Other low-temperature alteration events have been dated on sericitized plagioclase at ca. 145-146, 125, and 101 Ma. This is the first time that two distinct mineralization events have been documented from radiometric data for a copper deposit in the metallogenic belt of the Coastal Cordillera of northern Chile.

  9. Pneumatically sprayed Cu2ZnSnS4 films under Ar and Ar-H2 atmosphere

    Science.gov (United States)

    Espindola Rodriguez, M.; Sylla, D.; Sanchez, Y.; López-Marino, S.; Fontané, X.; López-García, J.; Placidi, M.; Pérez-Rodríguez, A.; Vigil-Galán, O.; Saucedo, E.

    2014-06-01

    Cu2ZnSnS4 (CZTS) thin films have been deposited by pneumatic spray pyrolysis onto soda-lime glass and Mo-coated glass substrates by using a special reactor designed for working under controlled atmospheres. The films were grown using both Ar and Ar-H2 as the carrier gas and atmosphere, aiming to eliminate the oxygen-containing atmosphere from the classical spray pyrolysis configuration that uses air as the carrier gas. Thin films with different compositions were prepared and thermally annealed to investigate its compositional and physical properties and its performance as absorber layers in solar cells. To know the impact of the thermal annealing, two different annealing temperatures were used: 550 and 580 °C, both for 30 min. The last temperature showed a great improvement in the crystallinity and allowed a better incorporation of Sn into the films. The optical band gap of the annealed films was found to be around 1.45 eV. Cu-S and ZnO were found as contaminant phases in the as-grown Ar-sprayed samples, but were effectively transformed after annealing. ZnS was detected in both the as-grown and annealed films as the main secondary phase. Solar cells free of scarce elements were fabricated showing an improved conversion efficiency of 1.4%, evidencing the higher potential of this approach for the synthesis of device-grade films.

  10. Evaluation of sintering effects on SiC-incorporated UO2 kernels under Ar and Ar-4%H2 environments

    Science.gov (United States)

    Silva, Chinthaka M.; Lindemer, Terrence B.; Hunt, Rodney D.; Collins, Jack L.; Terrani, Kurt A.; Snead, Lance L.

    2013-11-01

    Silicon carbide (SiC) is suggested as an oxygen getter in UO2 kernels used for tristructural isotropic (TRISO) particle fuels and to prevent kernel migration during irradiation. Scanning electron microscopy and X-ray diffractometry analyses performed on sintered kernels verified that an internal gelation process can be used to incorporate SiC in UO2 fuel kernels. Even though the presence of UC in either argon (Ar) or Ar-4%H2 sintered samples suggested a lowering of the SiC up to 3.5-1.4 mol%, respectively, the presence of other silicon-related chemical phases indicates the preservation of silicon in the kernels during sintering process. UC formation was presumed to occur by two reactions. The first was by the reaction of SiC with its protective SiO2 oxide layer on SiC grains to produce volatile SiO and free carbon that subsequently reacted with UO2 to form UC. The second process was direct UO2 reaction with SiC grains to form SiO, CO, and UC. A slightly higher density and UC content were observed in the sample sintered in Ar-4%H2, but both atmospheres produced kernels with ˜95% of theoretical density. It is suggested that incorporating CO in the sintering gas could prevent UC formation and preserve the initial SiC content.

  11. WA1ms: A ∼2.61 Ga muscovite standard for 40Ar/39Ar dating

    Science.gov (United States)

    Jourdan, Fred; Frew, Adam; Joly, Aurore; Mayers, Celia; Evans, Noreen J.

    2014-09-01

    The 40Ar/39Ar dating technique requires the use of neutron fluence monitors (standards) to allow calculation of the age of a sample. Precise calibration of these standards is crucial to obtaining accurate ages and decreasing the uncertainties associated with 40Ar/39Ar dates. Few fully intercalibrated 40Ar/39Ar standards with a sufficient total fusion grain-to-grain reproducibility are currently in use in the argon community. For Precambrian samples, only Hb3gr hornblende (∼1.08 Ga) yields sufficient grain-to-grain reproducibility and has an appropriate age for acceptable argon isotopic ratio measurements. Here, we present chemical and intercalibration results for a new ∼2.61 Ga standard. WA1ms is a muscovite extracted from an Archaean shear zone in the Lake Johnston greenstone belt, Western Australia. In situ trace element analysis by ELA-ICPMS revealed consistent K contents, subtle zonation and intra-grain and grain-to-grain heterogeneities in Rb, Sr, Ti, and Fe but a lack of mineral inclusions.WA1ms has been investigated over 3 irradiations ranging from 25 to 40 h, in two reactors, with several disc positions and three grains sizes and has been calibrated against FCs and GA1550, and Hb3gr. Overall, we carried out 48 total fusion and 4 step-heating experiments of WA1ms crystals. Flat age spectra and average F-value (40Ar∗/39ArK) relative standard deviations ranging from of 0.43% to 0.60% (P = 0.15-0.83) for 47/48 analyses demonstrate the reproducibility of WA1ms and its suitability as a reliable 40Ar/39Ar standard. We calculated R[WA1ms/FCs] = 205.59 ± 0.25, R[WA1ms/GA1550] = 57.25 ± 0.06 and R[WA1ms/Hb3gr] = 3.9713 ± 0.014 (all with P > 0.14) allowing direct comparison between WA1ms and any standards in used in the community, provided that they have been calibrated against any of the three standards used in the calibration and regardless of the age adopted for each of these standards. The recently revised decay constant values and standard ages proposed

  12. Mars Atmospheric History Derived from Upper-Atmospheric Structure of 38Ar/36Ar Measured From MAVEN

    Science.gov (United States)

    Jakosky, Bruce; Slipski, Marek; Benna, Mehdi; Mahaffy, Paul; Elrod, Meredith K.; Yelle, Roger; Stone, Shane; Alsaeed, Noora

    2016-10-01

    Measurements of the structure of the Martian upper atmosphere made from MAVEN observations allow us to derive homopause and exobase altitudes in the Mars upper atmosphere and to determine the isotopic fractionation that occurs between them. Fractionation in the ratio of 38Ar/36Ar occurs between the homopause and exobase due to diffusive separation. This fractionation, combined with measurements of the bulk atmospheric ratio, is used to determine the total amount of argon lost to space by pick-up-ion sputtering. Our analysis is based on Rayleigh distillation, modified by replenishment of gas to the atmosphere by outgassing, impact, and crustal weathering. Approximately 80 % of the 36Ar that was ever in the atmosphere has been removed through time. This high value requires that a major fraction of Mars atmospheric gas has been lost to space. It points strongly to loss to space as having been the dominant mechanism driving the transition in Martian climate from an early, warm, wet environment to today's cold, dry, thin atmosphere.

  13. 40Ar* loss in experimentally deformed muscovite and biotite with implications for 40Ar/39Ar geochronology of naturally deformed rocks

    Science.gov (United States)

    Cosca, Michael; Stunitz, Holger; Bourgiex, Anne-Lise; Lee, John P.

    2011-01-01

    The effects of deformation on radiogenic argon (40Ar*) retentivity in mica are described from high pressure experiments performed on rock samples of peraluminous granite containing euhedral muscovite and biotite. Cylindrical cores, ~15 mm in length and 6.25 mm in diameter, were drilled from granite collected from the South Armorican Massif in northwestern France, loaded into gold capsules, and weld-sealed in the presence of excess water. The samples were deformed at a pressure of 10 kb and a temperature of 600 degrees C over a period 29 of hours within a solid medium assembly in a Griggs-type triaxial hydraulic deformation apparatus. Overall shortening in the experiments was approximately 10%. Transmitted light and secondary and backscattered electron imaging of the deformed granite samples reveals evidence of induced defects and for significant physical grain size reduction by kinking, cracking, and grain segmentation of the micas.

  14. High-Energy Ions Emitted from Ar Clusters Irradiated by Intense Femtosecond Laser Pulses

    Institute of Scientific and Technical Information of China (English)

    LI Zhong; LEI An-Le; NI Guo-Quan; XU Zhi-Zhan

    2000-01-01

    We have experimentally studied the energy spectra of Ar ions emitted from Ar clusters irradiated by intense femtosecond laser pulses. The Ar clusters were produced in the adiabatic expansion of Ar gas into vacuum at high backing pressures. The laser peak intensity was about 2×106 W/cm2 with a pulse duration of 45 fs. The maximum and the average energies of Ar ions are 0.2 MeV and 15kev at a backing pressure of 2. S MPa, respectively. They are almost independent of the backing pressures in the range of 0.6 to 4.5 MPa.

  15. Audit, Control and Monitoring Design Patterns (ACMDP for Autonomous Robust Systems (ARS

    Directory of Open Access Journals (Sweden)

    C. Trad

    2008-11-01

    Full Text Available This paper proposes the Audit, Control and Monitoring Design Patterns (ACMDP for building Autonomous and Robust Systems (ARS such as Mobile Robot Systems (MRS. These patterns are also applicable to other Mission Critical and Complex Systems (MCCS. This paper presents a proposal which will help ARS project managers and engineers design, build and estimate the probability that an ARS will succeed or fail. Furthermore, this proposal offers the possibility to ARS problems with the help of audit, monitoring and controlling components, adjust the project management pathways, and define the problem sources as well as their possible solutions, in order to deliver an ARS or an MRS.

  16. Historicizando a teoria da atividade: do embate ao debate

    Directory of Open Access Journals (Sweden)

    Gustavo Martins Piccolo

    2012-08-01

    Full Text Available O presente artigo busca, mediante um processo de revisão de literatura, investigar analiticamente as origens, fundamentos e a estrutura da teoria da atividade, entendida como uma forma dialética de relação entre o homem e a realidade histórico-concreta, cuja materialidade é capital ao processo formativo do psiquismo humano. Tal teoria deriva-se dos estudos de Vygotsky e é sistematizada em seu aparato conceitual por Leontiev. Além disso, trazemos ao corpo do texto fundamentos acerca das discussões sobre a validade da teoria da atividade e as possíveis fontes epistemológicas e ideológicas das críticas dirigidas a tal aparato conceitual, objetivando transformar tal embate em um debate acalorado, todavia, profundamente comprometido para com uma psicologia crítica e transformadora.

  17. Sobre a viagem de Enrico Fermi ao Brasil em 1934

    CERN Document Server

    Caruso, Francisco

    2014-01-01

    Enrico Fermi was one of the greater physicists of the XX century. In 1934, he gave several lectures in Brazil. Invited by Theodoro Ramos to work in S\\~ao Paulo, he preferred to stay in Rome and went to the USA in 1938. However, Fermi recommended Gleb Wataghin to come in his place. Wataghin made history in Brazil, becoming one of the first Professors of the future S\\~ao Paulo University. Besides his relevance to the History of Science, Fermi eventually leaved an indelible mark on the creation and institutionalization of national scientific research due to the indication of Wataghin. Despite this fact, very little is known about Fermi's trip to Brazil. This work tries to reconstruct the fullest possible steps of the famous Italian physicist in our lands.

  18. Identification of a new androgen receptor (AR) co-regulator BUD31 and related peptides to suppress wild-type and mutated AR-mediated prostate cancer growth via peptide screening and X-ray structure analysis.

    Science.gov (United States)

    Hsu, Cheng-Lung; Liu, Jai-Shin; Wu, Po-Long; Guan, Hong-Hsiang; Chen, Yuh-Ling; Lin, An-Chi; Ting, Huei-Ju; Pang, See-Tong; Yeh, Shauh-Der; Ma, Wen-Lung; Chen, Chung-Jung; Wu, Wen-Guey; Chang, Chawnshang

    2014-12-01

    Treatment with individual anti-androgens is associated with the development of hot-spot mutations in the androgen receptor (AR). Here, we found that anti-androgens-mt-ARs have similar binary structure to the 5α-dihydrotestosterone-wt-AR. Phage display revealed that these ARs bound to similar peptides, including BUD31, containing an Fxx(F/H/L/W/Y)Y motif cluster with Tyr in the +5 position. Structural analyses of the AR-LBD-BUD31 complex revealed formation of an extra hydrogen bond between the Tyr+5 residue of the peptide and the AR. Functional studies showed that BUD31-related peptides suppressed AR transactivation, interrupted AR N-C interaction, and suppressed AR-mediated cell growth. Combination of peptide screening and X-ray structure analysis may serve as a new strategy for developing anti-ARs that simultaneously suppress both wt and mutated AR function.

  19. Da esclerodermia ao síndrome de poems

    Directory of Open Access Journals (Sweden)

    Ana Sofia Montez

    2015-12-01

    Full Text Available Homem, 84 anos, com antecedentes de hipotiroidismo e alterações cutâneas recentes compatíveis com esclerodermia, confirmadas em biópsia cutânea, mas com estudo auto-imune negativo. Foi internado por queixas constitucionais. Ao exame objetivo, apresentava-se emagrecido, com lesões de vitiligo nas mãos além das de esclerodermia (figura 1 e distensão abdominal com ascite

  20. Da esclerodermia ao síndrome de poems

    OpenAIRE

    Ana Sofia Montez; Elsa Rocha

    2015-01-01

    Homem, 84 anos, com antecedentes de hipotiroidismo e alterações cutâneas recentes compatíveis com esclerodermia, confirmadas em biópsia cutânea, mas com estudo auto-imune negativo. Foi internado por queixas constitucionais. Ao exame objetivo, apresentava-se emagrecido, com lesões de vitiligo nas mãos além das de esclerodermia (figura 1) e distensão abdominal com ascite

  1. Cuidado ao idoso deprimido e institucionalizado à luz da Complexidade

    Directory of Open Access Journals (Sweden)

    Cenir Gonçalves Tier

    2008-06-01

    Full Text Available Instituições de Longa Permanência para Idosos (ILPI são estabelecimentos para atendimento integral, institucionalizando pessoas de 60 anos e mais, dependentes/ou não, que não dispõem de condições para permanecer com a família ou/em seu domicílio. A institucionalização pode desencadear doenças, dentre elas a depressão. Foi objetivo deste artigo de atualização fazer uma reflexão sobre a relação do cuidado ao idoso deprimido e residente em ILPI com três princípios da Complexidade segundo Edgar Morin. Primeiro, se reflete sobre a complexidade; depois, se relaciona o cuidado ao idoso deprimido e residente em ILPI, com os princípios dialógico, recursivo e hologramático. Percebeu-se que a Complexidade pode sustentar teoricamente, não só a compreensão do fenômeno depressão no idoso residente em uma ILPI, como também inspirar o modo de cuidar que direcione aos trabalhadores da saúde, que atuam junto à pessoa idosa, a abordarem o idoso de forma mais global. Para tanto deve ser utilizada a Avaliação Multidimensional do Idoso, que analisa as várias dimensões da pessoa idosa, contribuindo no desenvolvimento de um plano de cuidado/tratamento e acompanhamento multidisciplinar e interdisciplinar adequados. A Complexidade vem sendo utilizada, por enfermeiros, para entender melhor a enfermagem e prestar cuidado mais adequado ao ser humano.

  2. Estudio del sistema simbiótico AR Pavonis

    Science.gov (United States)

    Quiroga, C.; Brandi, E.; Ferrer, O.; García, L.; Barbá, R.

    Se presenta un estudio espectroscópico y polarimétrico de la binaria eclipsante AR Pavonis a partir de observaciones obtenidas con el telescopio de 2.15 m. del CASLEO (San Juan). El estudio de la naturaleza del sistema se realizó a través del análisis de algunos espectros reunidos entre los años 1990 y 1995 y de datos polarimétricos correspondientes al intervalo 1995 y 1997. El análisis espectroscópico indica que AR Pav está compuesta por una gigante roja M3.7 y una componente caliente compacta, con una temperatura mayor a 90000 K y una luminosidad del orden de 500Lsolar. A lo largo del período orbital, las variaciones observadas en flujo y en velocidades radiales, reflejan que las emisiones permitidas se forman en una región que rodea la componente caliente. El estudio de la polarización lineal de AR Pav indica que además de una componente interestelar, existe una componente intrínseca del sistema que varía temporalmente y con la longitud de onda de la luz polarizada. El distinto comportamiento del grado de polarización y del ángulo de posición observado en fases diferentes, sugiere que distintos mecanismos pueden estar actuando, dependiendo de la región de scattering observado a lo largo de la línea de la visual.

  3. Rotational Spectrum of Ar...PROPARGYL Alcohol Complex

    Science.gov (United States)

    Mani, Devendra; Shahi, Abhishek; Arunan, E.

    2012-06-01

    Pure rotational spectrum for Ar...Propargyl alcohol complex has been observed and fitted. Fitted rotational constants for the complex are : A=4346.17307(90) MHz, B=1617.15317(19)MHz and C= 1245.42065(15) MHz. These rotational constants are very close to the ab-initio rotational constants for the geometry, in which propargyl alcohol exists in gauche conformation and Ar interacts with both, the hydroxyl group and the acetylenic group of propargyl alcohol. Rotational spectrum of deuterated isotopologue (-OD) of the complex further confirms the existence of the above mentioned geometry. In previous studies tunneling frequency corresponding to -OH tunneling motion in propargyl alocohol monomer was determined to be 652.4 GHz and for -OD tunneling motion in mono-deuterated species, it was 213.5 GHz. In Ar...Propargyl alcohol complex also, a-type and c-dipole transitions show tunneling splitting. In the parent complex, for a-type transitions, tunneling splitting was 10 KHz and for c-type transitions (c-dipole of the complex is in the same direction as in propargyl alcohol monomer, and it is antisymmetric with respect to OH tunneling motion in both monomer and the complex), it was 2.59 MHz. In deuterated complex (OD) splitting was not resolvable for a-type transitions while for c-type it reduces to 900 KHz. Search for C-13 isotopologues is in progress. Moreover, propargyl alcohol offers several possibilities for H-bonding and we are planning to study its complexes with water in near future. Results will be presented in the talk. E. Hirota,J. Mol. Spectrosc. 26 (1968) 335-350. J.C. Pearson, B.J. Drouin, J. Mol. Spectrosc. 234 (2005) 149-156.

  4. Production and release rate of (37)Ar from the UT TRIGA Mark-II research reactor.

    Science.gov (United States)

    Johnson, Christine; Biegalski, Steven R; Artnak, Edward J; Moll, Ethan; Haas, Derek A; Lowrey, Justin D; Aalseth, Craig E; Seifert, Allen; Mace, Emily K; Woods, Vincent T; Humble, Paul

    2017-02-01

    Air samples were taken at various locations around The University of Texas at Austin's TRIGA Mark II research reactor and analyzed to determine the concentrations of (37)Ar, (41)Ar, and (133)Xe present. The measured ratio of (37)Ar/(41)Ar and historical records of (41)Ar releases were then utilized to estimate an annual average release rate of (37)Ar from the reactor facility. Using the calculated release rate, atmospheric transport modeling was performed in order to determine the potential impact of research reactor operations on nearby treaty verification activities. Results suggest that small research reactors (∼1 MWt) do not release (37)Ar in concentrations measurable by currently proposed OSI detection equipment.

  5. SUBAXIAL CERVICAL FRACTURE: APPLICATION AND CORRELATION OF AO AND SLIC

    Directory of Open Access Journals (Sweden)

    Allan Hiroshi de Araujo Ono

    2015-09-01

    Full Text Available Objective:To evaluate the AO/Magerl classification and the SLIC (Subaxial Cervical Spine Injury Classification, used in the cervical spine fractures and assess whether they are correlated to the neurological severity of patients, the choice of approach to be used, de duration of surgery an between themselves.Method:Retrospective analysis of medical records and radiological image files of 77 patients surgically treated of subaxial cervical fracture or dislocation from August 2010 to September 2012.Results:The SLIC classification showed a strong correlation with neurological deficit and Pearson correlation value of -0.600. The AO classification was not correlated with the Frankel scale and the value of Pearson was 0.06 with a statistical significance of 0.682 (p<0.05, that is, unable to determine or suggest the severity of the deficit. When compared to each other the two classifications showed statistical correlation and the value of Pearson was 0.282 with a significance value of 0.022 (p<0.05.Conclusion:Among the most used classifications, the SLIC has been able to statistically define the need for surgical treatment and the severity of the neurological status, but was unable to predict the approach or the time of the surgery; the classification AO failed to predict the severity of neurological injury, surgical time, and did not help to choose the approach, just being a morphological classification.

  6. An Advanced Atmospheric Dispersion Corrector: The Magellan Visible AO Camera

    CERN Document Server

    Kopon, Derek; Gasho, Victor

    2010-01-01

    In addition to the BLINC/MIRAC IR science instruments, the Magellan adaptive secondary AO system will have an EEV CCD47 that can be used both for visible AO science and as a wide-field acquisition camera. The effects of atmospheric dispersion on the elongation of the diffraction limited Magellan adaptive optics system point spread function (PSF) are significant in the near IR. This elongation becomes particularly egregious at visible wavelengths, culminating in a PSF that is 2000\\{mu}m long in one direction and diffraction limited (30-60 \\{mu}m) in the other over the wavelength band 0.5-1.0\\{mu}m for a source at 45\\pm zenith angle. The planned Magellan AO system consists of a deformable secondary mirror with 585 actuators. This number of actuators should be sufficient to nyquist sample the atmospheric turbulence and correct images to the diffraction limit at wavelengths as short as 0.7\\{mu}m, with useful science being possible as low as 0.5\\{mu}m. In order to achieve diffraction limited performance over this ...

  7. Dual-Frequency VSOP Observations of AO 0235+164

    CERN Document Server

    Frey, S; Altschüler, D R; Davis, M M; Perillat, P; Salter, C J; Aller, H D; Aller, M F; Hirabayashi, H

    2000-01-01

    AO 0235+164 is a very compact, flat spectrum radio source identified as a BL Lac object at a redshift of z=0.94. It is one of the most violently variable extragalactic objects at both optical and radio wavelengths. The radio structure of the source revealed by various ground-based VLBI observations is dominated by a nearly unresolved compact component at almost all available frequencies. Dual-frequency space VLBI observations of AO 0235+164 were made with the VSOP mission in January-February 1999. The array of the Japanese HALCA satellite and co-observing ground radio telescopes in Australia, Japan, China and South Africa allowed us to study AO 0235+164 with an unprecedented angular resolution at frequencies of 1.6 and 5 GHz. We report on the sub-milliarcsecond structural properties of the source. The 5-GHz observations led to an estimate of T_B > 5.8 x 10^{13} K for the rest-frame brightness temperature of the core, which is the highest value measured with VSOP to date.

  8. LDEF results for polymer matrix composite experiment AO 180

    Science.gov (United States)

    Tennyson, R. C.

    1992-01-01

    This report represents a summary of the results obtained to-date on a polymer matrix composite experiment (AO 180) located at station D-12, about 82 deg off the 'ram' direction. Different material systems comprised of graphite, boron, and aramid (Kevlar) fiber reinforcements were studied. Although previous results were presented on in-situ thermal-vacuum cycling effects, particularly dimensional changes associated with outgassing, additional comparative data will be shown from ground-based tests on control and flight samples. The system employed was fully automated for thermal-vacuum cycling using a laser interferometer for monitoring displacements. Erosion of all three classes of materials due to atomic oxygen (AO) will also be discussed, including angle of incidence effects. Data from this experiment will be compared to published results for similar materials in other LDEF experiments. Composite materials' erosion yields will be presented on an AO design nomogram useful for estimating total material loss for given exposure conditions in low Earth orbit (LEO). Optical properties of these materials will also be compared with control samples. A survey of the damage caused by micrometeoroids/debris impacts will be addressed as they relate to polymer matrix composites. Correlations between hole size and damage pattern will be given. Reference to a new nomogram for estimating the number distribution of micrometeoroid/debris impacts for a given space structure as a function of time in LEO will be addressed based on LDEF data.

  9. Um crime delicado: conversando aos infinitos - "Um retrato de cavalo"

    Directory of Open Access Journals (Sweden)

    Cid Ottoni Bylaardt

    2010-12-01

    um cavalo e seu retrato, a partir dos sentimentos contraditórios de seu dono, que considera um crime aquele clique. Temos aí um retrato, imagem subtraída ilicitamente ao seu dono: escrita, representação. Temos também uma narrativa, escrita do retrato, representação da representação. Este artigo pretende mostrar como Guimarães Rosa manipula as ambiguidades da linguagem literária, levando-a além dos limites da representação, explorando seu fascínio, seu saber, que não é da ordem da compreensão. O cavalo e seu retrato fazem refletir sobre a literatura, sobre seu excesso de verdade que compõe sua mentira. Ao escrever o cavalo e seu retrato, o texto não consegue fixar nenhuma verdade, apenas imagens fugidias que compõem recapítulos: há sempre um escrito a se sobrepor a outro, sem determinar onde está o verdadeiro, onde está o que o nega, a remeter o olhar ao reino da fascinação, onde a imagem perde o valor de significação para se tornar pura paixão da indeterminação, da indiferença.

  10. Simulations of (MC)AO for a 100-m telescope

    Science.gov (United States)

    Le Louarn, Miska; Verinaud, Christophe; Yaitskova, Natalia; Korkiakoski, Visa; Fedrigo, Enrico; Hubin, Norbert N.

    2004-10-01

    In this paper, we summarize the analysis made on various Adaptive Optics (AO) modes (including Shack-Hartmann (SH) and Pyramid Wavefront Sensors (PWS)) for the OverWhelmingly Large telescope (OWL). We will show some early results of the performance to be expected with a first generation AO system, working in the infrared. Several telescope diameters were considered to see the variations as a function of telescope diameter. This is also compatible with the concept of "grow a telescope" where the telescope diameter of OWL grows from 60m to 100m as a function of time. In a first phase, to simplify the problem, the effects of the central obstruction were neglected. However, for the Shack-Hartmann (SH) simulations, additional simulations were carried out with a simulated OWL pupil, including segmentation errors. We show some early results for a ground-layer correction system, working with three natural guide stars (NGSs) and a single deformable mirror (DM). An MCAO system based on 2 DMs, 3 NGSs is also investigated. For the last two systems, our results are found to be in very good agreement with Cibola, an analytical AO modeling tool. We show that some outer scale of turbulence effects improve slightly the correction quality when going from a telescope diameter of 10m to 100m.

  11. Resposta ao estresse: I. Homeostase e teoria da alostase

    Directory of Open Access Journals (Sweden)

    Maria Bernardete Cordeiro de Sousa

    2015-03-01

    Full Text Available ResumoOs seres vivos desenvolvem ao longo de sua história evolutiva mecanismos de enfrentamento às condições adversas originadas tanto no ambiente geofísico como no ambiente social. Esta resposta adaptativa é coordenada e envolve diferentes sistemas funcionais, particularmente, os sistemas nervoso, endócrino e imune, e é denominada de resposta ao estresse e deve atender a duas demandas principais da vida: sobrevivência e reprodução. Esta revisão tem o objetivo de discutir o emprego do conceito clássico de homeostase e um conceito alternativo, alostase, que inclui os mecanismos preditivos e reativos de regulação, assim como os diferentes níveis de impacto dos estressores crônicos, resultando em sobrecarga alostática que pode ou não se seguir de falha alostática. Os mecanismos neurais, hormonais, imunes, sistêmicos e moleculares, que compreendem os sistemas alóstaticos subjacentes à resposta ao estresse são também apresentados.

  12. Pneumonia lipoide secundária ao uso prolongado de óleo de prímula Lipoid pneumonia secondary to long-term use of evening primrose oil

    Directory of Open Access Journals (Sweden)

    Marcelo Fouad Rabahi

    2010-10-01

    Full Text Available A pneumonia lipoide é uma doença pouco diagnosticada, causada pela aspiração de partículas oleosas para dentro dos pulmões. Os casos relatados têm sido relacionados ao uso de óleo mineral como laxativo, mas outras soluções oleosas também podem causar a doença. Relatamos o caso de uma paciente de 50 anos com queixa de tosse produtiva, sendo diagnosticada inicialmente com hiper-reatividade brônquica e doença do refluxo gastroesofágico (DRGE. A paciente foi submetida a tratamento para DRGE. Devido à persistência da tosse, a paciente foi submetida a TC de tórax, fibrobroncoscopia e biópsia pulmonar a céu aberto, sendo diagnosticada com pneumonia lipoide. A paciente foi questionada quanto ao uso de substâncias oleosas, relatando o uso crônico de óleo de prímula. Com a suspensão do uso da substância e a continuidade do tratamento para DRGE, houve melhora do quadro.Lipoid pneumonia is an underdiagnosed disease that is caused by the aspiration of lipid particles into the lungs. Although most of the reported cases have been associated with the use of mineral oil as a laxative, other lipid substances can also cause the disease. We report the case of a 50-year-old female patient with a complaint of productive cough who was initially diagnosed with bronchial hyperresponsiveness and gastroesophageal reflux disease (GERD. The patient was treated for GERD. Because the productive cough persisted, the patient underwent chest CT, fiberoptic bronchoscopy, and open lung biopsy. She was diagnosed with lipoid pneumonia. The patient was questioned regarding the use of lipid substances, and she reported the chronic use of evening primrose oil. After the discontinuation of the substance and the maintenance of GERD treatment, her condition improved.

  13. Adsorption of Ar on individual carbon nanotubes, graphene, and graphite

    Science.gov (United States)

    Dzyubenko, Boris; Kahn, Joshua; Vilches, Oscar; Cobden, David

    2015-03-01

    We compare and contrast results of adsorption measurements of Ar on single-walled carbon nanotubes, graphene, and graphite. Adsorption isotherms on individual suspended nanotubes were obtained using both the mechanical resonance frequency shift (sensitive to mass adsorption) and the electrical conductance. Isotherms on graphene mounted on hexagonal boron nitride were obtained using only the conductance. New volumetric adsorption isotherms on bulk exfoliated graphite were also obtained, paying special attention to the very low coverage region (less than 2% of a monolayer). This allowed us to compare the degree of heterogeneity on the three substrate types, the binding energies, and the van der Waals 2D parameters. Research supported by NSF DMR 1206208.

  14. Predication of Crane Condition Parameters Based on SVM and AR

    Science.gov (United States)

    Xiuzhong, Xu; Xiong, Hu; Congxiao, Zhou

    2011-07-01

    Through statistic analysis of vibration signals of motor on the container crane hoisting mechanism in a port, the feature vectors with vibration are obtained. Through data preprocessing and training data, Training models of condition parameters based on support vector machine (SVM) are established. The testing data of condition monitoring parameters can be predicted by the training models. During training the models, the penalty parameter and kernel function of model are optimized by cross validation. In order to analysis the accurate of SVM model, autoregressive model is used to predict the trend of vibration. The research showed the predicted results of model using SVM are better than the results by autoregressive (AR) modeling.

  15. Tissue Characterization on Common Carotid Artery using AR Model

    Science.gov (United States)

    Koya, Yoshiharu; Mizoshiri, Isao

    This study uses one image with a echocardiography and detects arteriosclerosis on the common carotid artery by tissue characterization. The conventional methods are measurement of thickness on the vessel wall or stiffness on the common carotid artery. However, they need frames of several beats and great calculation times. But, we detect the arteriosclerosis with only one image. Our method estimate the grade of arteriosclerosis by AR model parameters fitted to the texture on the lumen-intima wall. Experimental results show the validity of the proposed method.

  16. Energy Levels of Highly Ionized Ar ⅩⅣ

    Institute of Scientific and Technical Information of China (English)

    CHENG Zhang; LI Ping; DENG Xiao-Hui

    2006-01-01

    With the Breit interaction and quantum electrodynamics corrections considered, relativistic configuration interaction calculations have been carried out in the extended optimal level scheme using multi-configuration Dirac-Fock wave functions on the 204 energy levels and electric dipole transitions of Ar ⅩⅣ. The results of electric dipole transitions are in good agreement with experiments. Among the energy levels calculated, the lowest 125 levels are in good agreement with available experimental and other theoretical ones, and the other 79 levels are new ones obtained by the present work. This wide range of atomic energy levels is useful in astrophysics and plasma physics.

  17. The readout system for the ArTeMis camera

    Science.gov (United States)

    Doumayrou, E.; Lortholary, M.; Dumaye, L.; Hamon, G.

    2014-07-01

    During ArTeMiS observations at the APEX telescope (Chajnantor, Chile), 5760 bolometric pixels from 20 arrays at 300mK, corresponding to 3 submillimeter focal planes at 450μm, 350μm and 200μm, have to be read out simultaneously at 40Hz. The read out system, made of electronics and software, is the full chain from the cryostat to the telescope. The readout electronics consists of cryogenic buffers at 4K (NABU), based on CMOS technology, and of warm electronic acquisition systems called BOLERO. The bolometric signal given by each pixel has to be amplified, sampled, converted, time stamped and formatted in data packets by the BOLERO electronics. The time stamping is obtained by the decoding of an IRIG-B signal given by APEX and is key to ensure the synchronization of the data with the telescope. Specifically developed for ArTeMiS, BOLERO is an assembly of analogue and digital FPGA boards connected directly on the top of the cryostat. Two detectors arrays (18*16 pixels), one NABU and one BOLERO interconnected by ribbon cables constitute the unit of the electronic architecture of ArTeMiS. In total, the 20 detectors for the tree focal planes are read by 10 BOLEROs. The software is working on a Linux operating system, it runs on 2 back-end computers (called BEAR) which are small and robust PCs with solid state disks. They gather the 10 BOLEROs data fluxes, and reconstruct the focal planes images. When the telescope scans the sky, the acquisitions are triggered thanks to a specific network protocol. This interface with APEX enables to synchronize the acquisition with the observations on sky: the time stamped data packets are sent during the scans to the APEX software that builds the observation FITS files. A graphical user interface enables the setting of the camera and the real time display of the focal plane images, which is essential in laboratory and commissioning phases. The software is a set of C++, Labview and Python, the qualities of which are respectively used

  18. X-ray calculations for a NLTE Ar plasma

    Institute of Scientific and Technical Information of China (English)

    WU Ze-qing; PANG Jin-qiao; HAN Guo-xing

    2004-01-01

    A model is developed to calculate emission spectrum of non-local thermodynamic equilibrium(NLTE) plasmas. The Collisional-Radiative model is adopted for non-LTE population calculations. Configuration-averaged rate coefficients that needed in the rate equations are obtained based on the first order perturbation theory. The Hatree-Fock-Slater self-consistent-field method is used to calculate electron wave functions. The present model is applied to the calculation of emissivity from a Ar plasma. The features of the spectra are in good agreement with those calculated by other theoretical models, but the data of the integrated emissivity differ by a factor 2~8.

  19. AR-based Algorithms for Short Term Load Forecast

    Directory of Open Access Journals (Sweden)

    Zuhairi Baharudin

    2014-02-01

    Full Text Available Short-term load forecast plays an important role in planning and operation of power systems. The accuracy of the forecast value is necessary for economically efficient operation and effective control of the plant. This study describes the methods of Autoregressive (AR Burg’s and Modified Covariance (MCOV in solving the short term load forecast. Both algorithms are tested with power load data from Malaysian grid and New South Wales, Australia. The forecast accuracy is assessed in terms of their errors. For the comparison the algorithms are tested and benchmark with the previous successful proposed methods.

  20. Jauno vecāku apmierinātības ar attiecībām saistība ar vecāku stresu.

    OpenAIRE

    Strangate, Ilze

    2011-01-01

    Bakalaura darba mērķis ir izpētīt apmierinātības ar pāra attiecībām saistību ar vecāku stresu, un atbildēt uz jautājumiem - Vai pastāv saistība starp jauno vecāku apmierinātību ar attiecībām un vecāku stresu? Vai pastāv apmierinātības ar attiecībām un vecāku stresa saistības atšķirības jaunajām mātēm un tēviem? Vai atšķiras apmierinātība ar attiecībām un vecāku stress jaunajiem vecākiem ar dažādu kopdzīves veidu? Vai kopdzīves ilgums ir saistīts ar apmierinātību ar attiecībām un vecāku stresu...

  1. Time and Spectrally Resolved Fluorescence of Cl*2 and ArCl* in Cl2 Doped Ar Under State Selective Pulsed Photoexcitation with Synchrotron Radiation

    Science.gov (United States)

    Möller, T.; Jordan, B.; Zimmerer, G.; Haaks, D.; Le Calvé, J.; Castex, M.-C.

    1986-03-01

    Synchrotron Radiation is used to selectively excite chlorine and Cl2 doped argon in the VUV region. Stationary fluorescence and excitation spectra of the 11Σ{/u +}, 21Σ{/u +} and 23Π g Cl{2/*} states and of the ArCl*( B-X) transition are obtained. The excitation threshold of ArCl*( B) in Ar/Cl2 system is found to be 1,285±5 Å and that of ArCl( C) at ˜1,260 Å. The formation of ArCl* and Cl*2(23Π g) is discussed in terms of recent potential curves data. A detailed time resolved study is reported which allows us to determine precisely the radiative lifetime of ArCl*( B) state (5.2 ns) and numerous kinetic parameters of this system, to estimate the C state energy and to discuss the relaxation and mixing process of the ArCl*( B) and ( C) states. A two ladder multilevel kinetic model is described which accounts for the experimental results and shows the difficulty of studying this particular ArCl* system as compared to the closely related XeCl* and KrCl* ones.

  2. Eruption of the Continental Flood Basalts at ~259 Ma in the Emeishan Large Igneous Province, SW China: Evidence from Laser Microprobe 40Ar/39Ar Dating

    Institute of Scientific and Technical Information of China (English)

    HOU Zengqian; CHEN Wen; LU Jiren

    2006-01-01

    A suite of continental flood basalts sampled over a vast exposure and stratigraphic thickness in the Emeishan large igneous province (LLP), SW China was investigated for laser microprobe 40Ar/39Ar dating. There are two 40Ar/39Ar age groups for these basalts, corresponding to 259-246 Ma and 177-137 Ma, respectively. A well-defined isochron gives an eruption age of huge quantities of mafic magmas at 258.9±3.4 Ma, which is identical to previous dating and paleontological data. Much younger 40Ar/39Ar ages for some basalts with low-greenschist metamorphic facies probably recorded a late thermo-tectonic event caused by collision between the Yangtze and Qiangtang continental blocks during the Mesozoic, which resulted in the reset of argon isotope system. The 40Ar/39Ar age data, we present here, combined with previous dating and paleontological data, suggest relatively short duration (about 3 Ma) of mafic volcanism, which have important implication on mantle plume genesis of the Emeishan continental flood basalts in the LIP.

  3. Sedimentary cycles and volcanic ash beds in the Lower Pliocene lacustrine succession of Ptolemais (NW Greece): discrepancy between 40 Ar/39 Ar and astronomical ages

    NARCIS (Netherlands)

    Steenbrink, J.; Vugt, N. van; Hilgen, F.J.; Wijbrans, J.R.; Meulenkamp, J.E.

    2001-01-01

    A high-resolution cyclostratigraphy for the rhythmically bedded lignite-marl sequences of the Lower Pliocene Ptole-mais Formation is combined with 40 Ar= 39 Ar dating results of intercalated volcanic ash beds. Detailed field reconnaissance in three open-pit lignite mines reveals three end-member sed

  4. Fatores associados a baixa adesao ao tratamento medicamentoso em idosos

    Directory of Open Access Journals (Sweden)

    Noemia Urruth Leao Tavares

    2013-12-01

    Full Text Available OBJETIVO : Analisar fatores associados à baixa adesão ao tratamento medicamentoso em idosos. MÉTODOS : Estudo transversal de base populacional, com amostra representativa de 1.593 indivíduos com 60 anos ou mais, residentes na região urbana de Bagé, RS, em 2008. A amostragem foi realizada em múltiplos estágios. Os dados foram coletados em entrevistas individuais nos domicílios. Analisou-se a associação entre a baixa adesão referida ao tratamento medicamentoso mensurado pelo Brief Medication Questionnaire (BMQ e fatores demográficos, socioeconômicos, comportamentais e de saúde, assistência e prescrição. Foi utilizado modelo de regressão de Poisson para estimar as razões de prevalência bruta e ajustada, os respectivos intervalos de confiança de 95% e p-valor (teste de Wald. RESULTADOS : Cerca de 78,0% dos indivíduos referiram ter usado algum medicamento nos sete dias precedentes à entrevista. Desses, cerca de 1 / 3 foram considerados com baixa adesão ao tratamento. Os fatores significativamente associados à baixa adesão foram: idade (65 a 74 anos, não ter plano de saúde, ter que comprar (totalmente ou em parte os seus medicamentos, ter três ou mais morbidades, possuir incapacidade instrumental para a vida diária e usar três ou mais medicamentos. CONCLUSÕES : A utilização elevada de medicamentos, decorrente da alta prevalência de doenças crônico-degenerativas em idosos, e o acesso ao tratamento devem ser considerados pelos profissionais de saúde para adoção de estratégias que visem diminuir a baixa adesão ao tratamento, aumentando a resolutividade terapêutica e a qualidade de vida desses pacientes.

  5. SIMS chemical and isotopic analysis of impact features from LDEF experiments AO187-1 and AO187-2

    Science.gov (United States)

    Stadermann, Frank J.; Amari, Sachiko; Foote, John; Swan, Pat; Walker, Robert M.; Zinner, Ernst

    1995-01-01

    Previous secondary ion mass spectrometry (SIMS) studies of extended impact features from LDEF capture cell experiment AO187-2 showed that it is possible to distinguish natural and man-made particle impacts based on the chemical composition of projectile residues. The same measurement technique has now been applied to specially prepared gold target impacts from experiment AO187-1 in order to identify the origins of projectiles that left deposits too thin to be analyzed by conventional energy-dispersive x-ray (EDX) spectroscopy. The results indicate that SIMS may be the method of choice for the analysis of impact deposits on a variety of sample surfaces. SIMS was also used to determine the isotopic compositions of impact residues from several natural projectiles. Within the precision of the measurements all analyzed residues show isotopically normal compositions.

  6. Assalto ao Estado e ao mercado, neoliberalismo e teoria econômica Assault on the State and on the market: Neoliberalism and economic theory

    Directory of Open Access Journals (Sweden)

    Luiz Carlos Bresser-Pereira

    2009-01-01

    Full Text Available O Estado e o mercado são instituições complementares. O Estado é a instituição principal que coordena as sociedades modernas; é o sistema constitucional e a organização que o garante; é o principal instrumento por meio do qual as sociedades democráticas estão moldando o capitalismo de modo a alcançar seus próprios objetivos políticos. Os mercados são instituições baseadas na competição regulada pelo Estado para que contribuam com a coordenação da economia. Enquanto o liberalismo emergiu no século XVIII para combater o Estado autocrático, desde os anos 1980 o neoliberalismo (uma distorção maior do liberalismo econômico tornou-se dominante e montou um assalto ao Estado em nome do mercado, mas eventualmente também atacou o mercado. A macroeconomia neoclássica e a teoria da escolha pública foram as metaideologias que deram a esse assalto um apelo "científico" e matemático.State and market are complementary institutions. The state is the major institution coordinating modern societies; it is the constitutional system and the organizations guaranteeing it; it is the main instrument through which democratic societies have been changing capitalism so as to achieve their own agreed political objectives. Markets are institutions based on competition which the state regulates so that they contribute to the coordination of the economy. While liberalism emerged in the 18th century to fight an autocratic state, since the 1980s neoliberalism (a major distortion of economic liberalism became dominant and mounted a political assault to the state in the name of the market, but eventually also attacked the market. Neoclassical macroeconomics and public choice theory were the meta-ideologies that gave to this assault a "scientific" and mathematical allure.

  7. Re-measurement of $^{32}$Ar to test the IMME

    CERN Multimedia

    The Isobaric Multiplet Mass Equation (IMME) has been subject to extensive studies in the low-mass region. Especially at the A = 32 quintet, the predicted quadratic form could not be confirmed, possible explanations being the insufficient accuracy of input parameters or higher-order interactions within the nucleon. For this quintet, the uncertainty on the mass-excess values of four of the five T = 2 multiplet members is extremely low: 0.6 keV for $^{32}$Cl, 0.3 keV for $^{32}$S, 0.2 keV for $^{32}$P, and 0.7 keV for $^{32}$Si. In the case of $^{32}$Ar, however, the uncertainty is as large as 1.8 keV. State-of-the-art high-precision Penning-trap mass spectrometry makes it possible to decrease this uncertainty. We propose to remeasure the mass of $^{32}$Ar at the Penning-trap mass spectrometer ISOLTRAP thus decreasing the uncertainty by a factor of 3-5. The proposed measurement is part of an experimental collaboration with JYFLTRAP, where the remaining masses of the T = 2 isospin quintet at A = 32 will be remeas...

  8. archAR: an archaeological augmented reality experience

    Science.gov (United States)

    Wiley, Bridgette; Schulze, Jürgen P.

    2015-03-01

    We present an application for Android phones or tablets called "archAR" that uses augmented reality as an alternative, portable way of viewing archaeological information from UCSD's Levantine Archaeology Laboratory. archAR provides a unique experience of flying through an archaeological dig site in the Levantine area and exploring the artifacts uncovered there. Using a Google Nexus tablet and Qualcomm's Vuforia API, we use an image target as a map and overlay a three-dimensional model of the dig site onto it, augmenting reality such that we are able to interact with the plotted artifacts. The user can physically move the Android device around the image target and see the dig site model from any perspective. The user can also move the device closer to the model in order to "zoom" into the view of a particular section of the model and its associated artifacts. This is especially useful, as the dig site model and the collection of artifacts are very detailed. The artifacts are plotted as points, colored by type. The user can touch the virtual points to trigger a popup information window that contains details of the artifact, such as photographs, material descriptions, and more.

  9. Scientia sexualis versus ars erotica: Foucault, van Gulik, Needham.

    Science.gov (United States)

    Rocha, Leon Antonio

    2011-09-01

    This paper begins with a discussion of the scientia sexualis/ars erotica distinction, which Foucault first advances in History of Sexuality Vol. 1, and which has been employed by many scholars to do a variety of analytical work. Though Foucault has expressed his doubts regarding his conceptualization of the differences between Western and Eastern discourses of desire, he never entirely disowns the distinction. In fact, Foucault remains convinced that China must have an ars erotica. I will explore Foucault's sources of authority. To this end, I introduce the work of famous Dutch sinologist Robert Hans van Gulik, who published the tremendously influential Sexual Life in Ancient China in 1961, and also explore Joseph Needham's view on Chinese sex. I argue that, Foucault, in his fierce polemic against the "Repressive Hypothesis", himself imagined a utopian Other where pleasure and desire were organised differently. I end on a discuss on Orientalism and the project of "Sinography" of comparative literature scholars Haun Saussy, Eric Hayot and others.

  10. An industrial approach to design compelling VR and AR experience

    Science.gov (United States)

    Richir, Simon; Fuchs, Philippe; Lourdeaux, Domitile; Buche, Cédric; Querrec, Ronan

    2013-03-01

    The convergence of technologies currently observed in the field of VR, AR, robotics and consumer electronic reinforces the trend of new applications appearing every day. But when transferring knowledge acquired from research to businesses, research laboratories are often at a loss because of a lack of knowledge of the design and integration processes in creating an industrial scale product. In fact, the innovation approaches that take a good idea from the laboratory to a successful industrial product are often little known to researchers. The objective of this paper is to present the results of the work of several research teams that have finalized a working method for researchers and manufacturers that allow them to design virtual or augmented reality systems and enable their users to enjoy "a compelling VR experience". That approach, called "the I2I method", present 11 phases from "Establishing technological and competitive intelligence and industrial property" to "Improvements" through the "Definition of the Behavioral Interface, Virtual Environment and Behavioral Software Assistance". As a result of the experience gained by various research teams, this design approach benefits from contributions from current VR and AR research. Our objective is to validate and continuously move such multidisciplinary design team methods forward.

  11. Synthesis and characterization of Ar-annealed zinc oxide nanostructures

    Directory of Open Access Journals (Sweden)

    Narayanan Kuthirummal

    2016-09-01

    Full Text Available Nanostructured zinc oxide samples were synthesized through CVD and annealed in argon. The samples were investigated using SEM, TEM, XRD, and UV/VIS/FTIR photoacoustic spectroscopy. The SEM/TEM images show relatively spherical particles that form elongated, connected domains post-anneal. XRD measurements indicate a typical wurtzite structure and reveal an increase in average grain size from 16.3 nm to 21.2 nm in Ar-annealed samples over pristine samples. Visible photoacoustic spectra reveal the contribution of defect levels on the absorption edge of the fundamental gap of zinc oxide. The steepness parameter of the absorption edge, which is inversely proportional to the width of the absorption edge, decreased from 0.1582 (pristine to 0.1539 (annealed for 90 minutes revealing increased density of defect states upon annealing. The FTIR photoacoustic spectra show an intense peak at 412 cm-1 and a shoulder at 504 cm-1 corresponding to the two transverse optical stretching modes of ZnO. These results may indicate a self-assembly mechanism upon anneal under Ar atmosphere leading to early-stage nanorod growth.

  12. Suporte relacionado ao cuidado em saúde ao doente com aids: o modelo de comboio e a enfermagem

    Directory of Open Access Journals (Sweden)

    Edilene Aparecida Araújo da Silveira

    2011-06-01

    Full Text Available O presente estudo teve como objetivo conhecer a relação e a troca de suporte entre o doente com AIDS e pessoas à sua volta. O estudo está baseado no modelo de comboio das relações sociais que tem como uma de suas características a representação da rede em três círculos concêntricos. Os participantes eram pessoas que estavam internadas e que falaram sobre o suporte relacionado ao cuidado em saúde proporcionado por pessoas próximas, ou seja, que pertenciam ao círculo interno do comboio. A maioria dos participantes descreveu o círculo como sendo composto por no máximo cinco integrantes, sendo que pessoas da família foram as mais citadas. Os profissionais de saúde precisam conhecer o paciente e seu comboio, reconhecendo-os no contexto psicossocial e cultural de forma a favorecer a aceitação da soropositividade, mudanças no estilo de vida, ajuda nos cuidados de saúde e adesão ao tratamento.

  13. 40 Ar/39 Ar Ages of Auriferous Quartz Veins from the Fengyang and Zhangbaling Regions and Their Geological Significance

    Institute of Scientific and Technical Information of China (English)

    应汉龙; 赵利清

    2003-01-01

    Geotectonically the Fengyang and Zhangbaling regions belong to the North China craton and the Dabie-Sulu orogene, respectively. Neo-Archean gneiss and amphibolite and metamor-phosed sea-facies sodic volcanic rocks are the main outcrops in the two regions, respectively. The Zhangbaling terrane strike-skipped along the Tancheng-Lujiang fault zone in Mesozoic and Cenozo-ic eras and got close to the Fengyang terrane. Mesozoic Yanshanian intrusions occur broadly in the two regions. Gold-bearing quartz veins occur in the metamorphic rocks in the Fengyang region and in the granodiorite and metamorphosed sea-facies sodic volcanic rocks in the Zhangbaling region.Generally, the formation of the auriferous quartz veins involved three stages. At the first stage, gold-poor sulfide quartz veins were formed; at the second stage gold-rich quartz sulfide veins were formed; and at the third stage gold-poor barite and/or carbonate veins were formed. The 40Ar/39Ar step-heating plateau ages of the first-stage and the second-stage quartz aggregates from the Zhuding, Maoshan and Shangcheng gold deposits range between 116.1 + 0.6 Ma and 118.3 + 0.5 Ma and are pretty close to their least apparent ages and isochronal ages, respectively. All plat-eau, least apparent and isochronal ages range between 113.4 ± 0.4 Ma and 118.3 ± 0.5 Ma,which are considered as the formation age range of the quartz. It is reasonable and reliable to take the 40Ar/39Ar age range of the quartz as the formation age range of gold-bearing quartz veins on the basis of spatial relationship between gold-bearing quartz veins and their country rocks. The gold deposits in the two regions were formed in Aptian, Cretaceous, when the Tancheng-Lujiang fault zone moved as a normal fault with slightly right-lateral strike-skip, was extensional and expe-rienced very strong magmatic process. It is shown that the magmatic hydrothermal fluid is a very important part of the gold ore-forming hydrothermal fluid in the Fengyang and

  14. Multiplicity fluctuations in Ar+Sc collisions at the CERN SPS from NA61/SHINE arXiv

    CERN Document Server

    Seryakov, Andrey

    Multiplicity fluctuations were investigated in Ar+Sc collisions at 13A, 19A, 30A, 40A, 75A, 150A GeV/c using the NA61/SHINE detector at the SPS. Centrality selection is based on the nucleon-spectator energy in the forward hemisphere as measured by the Projectile spectator detector. Preliminary results on the scaled variance {\\omega} and the strongly intensive measure {\\Omega} were obtained for the multiplicity distribution of all, negatively and positively charged hadrons. Results are discussed and compared with p+p results and Pb+Pb data of NA49 and EPOS 1.99 simulations.

  15. Dating fault-generated pseudotachylytes: comparison of 40Ar/39Ar stepwise-heating, laser-ablation and Rb-Sr microsampling analyses

    Science.gov (United States)

    Müller, Wolfgang; Kelley, Simon; Villa, Igor

    2002-07-01

    Three different geochronological techniques (stepwise-heating, laser-ablation 40Ar/39Ar, Rb-Sr microsampling) have been evaluated for dating fault-generated pseudotachylytes sampled along the Periadriatic Fault System (PAF) of the Alps. Because pseudotachylytes are whole-rock systems composed of melt, clast and alteration phases, chemical control from both Ar isotopes (Cl/K, Ca/K ratios) and EMPA analyses is crucial for their discrimination. When applied to stepwise-heating 40Ar/39Ar analyses, this approach yields accurate melt-related ages, even for complex age spectra. The spatial resolution of laser-ablation 40Ar/39Ar analyses is capable of contrasting melt, clast and alteration phases in situ, provided the clasts are not too fine grained, the latter of which results in integrated "mixed" ages without geological information. Elevated Cl/K and Ca/K ratios were found to be an invaluable indicator for the presence of clast admixture or inherited 40Ar. Due to incomplete isotopic resetting during frictional melting, Rb-Sr microsampling dating did not furnish geologically meaningful ages. On the basis of isotopic disequilibria among pseudotachylyte matrix phases, and independent Rb-Sr microsampling dating of cogenetic (ultra)mylonites, the concordant 40Ar/39Ar pseudotachylyte ages are interpreted as formation ages. The investigated pseudotachylytes altogether reveal a Cretaceous to Miocene history for the entire PAF, consistent with independent geological evidence. Individual faults, however, consistently reveal narrower intervals of enhanced activity lasting a few million years. Electronic supplementary material to this paper can be obtained by using the Springer LINK server at http://dx.doi.org/10.1008/s00410-002-0381-6

  16. Surface modification and biocompatible improvement of polystyrene film by Ar, O{sub 2} and Ar + O{sub 2} plasma

    Energy Technology Data Exchange (ETDEWEB)

    Chen Yashao, E-mail: yschen@snnu.edu.cn [Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, School of Chemistry and Chemical Engineering, Xi' an 710062 (China); Gao Qiang; Wan Haiyan; Yi Jinhong; Wei Yanlin [Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, School of Chemistry and Chemical Engineering, Xi' an 710062 (China); Liu Peng [Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing 400044 (China)

    2013-01-15

    Highlights: Black-Right-Pointing-Pointer NVP is successfully grafted onto the different discharge gases (Ar, O{sub 2}, and Ar + O{sub 2}) plasma-treated PS film surface by Ar plasma induced graft polymerization. Black-Right-Pointing-Pointer Compare with Ar and O{sub 2} plasma, the Ar + O{sub 2} plasma-treated film surface introduced large amounts of NVP, as known from ATR-FTIR and XPS results. Black-Right-Pointing-Pointer According to SEM, the surface roughness increased at different levels after plasma treatment. Contact angle reveal that the hydrophilicity of the PS film surface was greatly improved. Black-Right-Pointing-Pointer Cellular compatibility tests indicate that Ar + O{sub 2} plasma is more capable of increasing cell adhesion and proliferation. - Abstract: This paper reports the surface modification of different discharge gases (Ar, O{sub 2}, and Ar + O{sub 2}) plasma-treated polystyrene (PS) film by Ar plasma induced graft polymerization, with biocompatible monomer N-vinyl-2-pyrrolidone (NVP) is carried out to improve biocompatibility. The films are characterized by attenuated total reflectance Fourier transfer infrared (ATR-FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Water contact angle measurement demonstrates the modified films possess a relatively hydrophilic surface. Furthermore, the films are also examined cell attachment and proliferation in vitro using mouse fibroblasts (L929 cells). The modified film surface shows a better cell distribution and growth than that of the pristine PS surface. From cell culture experiments, it is also observed that Ar + O{sub 2} plasma is more capable of increasing cell adhesion and proliferation. This method will provide a potential and effective solution for grafting useful component in future tissue-engineering applications.

  17. Acetalated dextran encapsulated AR-12 as a host-directed therapy to control Salmonella infection.

    Science.gov (United States)

    Hoang, Ky V; Borteh, Hassan M; Rajaram, Murugesan V S; Peine, Kevin J; Curry, Heather; Collier, Michael A; Homsy, Michael L; Bachelder, Eric M; Gunn, John S; Schlesinger, Larry S; Ainslie, Kristy M

    2014-12-30

    AR-12 has been evaluated in clinical trials as an anti-cancer agent but also has demonstrated host-directed, broad-spectrum clearance of bacteria. We have previously shown that AR-12 has activity in vitro against Salmonella enterica serovar Typhimurium and Francisella species by inducing autophagy and other host immune pathways. AR-12 treatment of S. Typhimurium-infected mice resulted in a 10-fold reduction in bacterial load in the liver and spleen and an increased survival time. However, AR-12 treatment did not protect mice from death, likely due poor formulation. In the current study, AR-12 was encapsulated in a microparticulate carrier formulated from the novel degradable biopolymer acetalated dextran (Ace-DEX) and subsequently evaluated for its activity in human monocyte-derived macrophages (hMDMs). Our results show that hMDMs efficiently internalized Ace-DEX microparticles (MPs), and that encapsulation significantly reduced host cell cytotoxicity compared to unencapsulated AR-12. Efficient macrophage internalization of AR-12 loaded MPs (AR-12/MPs) was further demonstrated by autophagosome formation that was comparable to free AR-12 and resulted in enhanced clearance of intracellular Salmonella. Taken together, these studies provide support that Ace-DEX encapsulated AR-12 may be a promising new therapeutic agent to control intracellular bacterial pathogens of macrophages by targeting delivery and reducing drug toxicity.

  18. Aurora A regulates expression of AR-V7 in models of castrate resistant prostate cancer

    Science.gov (United States)

    Jones, Dominic; Noble, Martin; Wedge, Steve R.; Robson, Craig N.; Gaughan, Luke

    2017-01-01

    Androgen receptor variants (AR-Vs) provide a mechanism of therapy evasion in castrate-resistant prostate cancer (CRPC), yet mechanisms of regulation remain largely unknown. Here we investigate the role of Aurora A kinase on AR-Vs in models of CRPC and show depletion of Aurora A reduces AR-V target gene expression. Importantly, knockdown of Aurora A reconfigures splicing of AR pre-mRNA to discriminately down-regulate synthesis of AR-V transcripts, including AR-V7, without effecting full-length AR mRNA; and as a consequence, AR-V-driven proliferation and survival of CRPC cells is markedly reduced. Critically, these effects are reproduced by Aurora A inhibition. We show that Aurora A levels increase in advanced disease and AURKA is an AR-V target gene demonstrating a positive feedback mechanism of androgenic signalling in CRPC. In all, our data suggests that Aurora A plays a pivotal role in regulation of AR-V7 expression and represents a new therapeutic target in CRPC. PMID:28205582

  19. 40Ar-39Ar Age Constraints on Volcanism and Tectonism in the Terror Rift of the Ross Sea, Antarctica

    Science.gov (United States)

    2007-01-01

    Volcanic sills and dikes inferred from seismic reflection profiles and geophysical studies of the Ross Sea are thought to be related to the rift basins in the region, and their emplacement to be coeval with extension. However, lack of precise geochronology in the Terror Rift of the Ross Sea region has left these inferred relationships poorly constrained and has hindered neotectonic studies, because of the large temporal gaps between seismic reflectors of known ages. New 40Ar/39Ar geochronology presented here for submarine volcanic rocks provides better age constraints for neotectonic interpretations within the Terror Rift. Several samples from seamounts yielded young ages between 156 ± 21 and 122 ± 26 Ka. These ages support interpretations that extension within the Terror Rift was active at least through the Pleistocene. Three evenly spaced samples from the lowermost 100 m of Franklin Island range in age from 3.28 ± 0.04 to 3.73 ± 0.05 Ma. These age determinations demonstrate that construction of a small volcanic edifice such as Franklin Island took at least several hundred thousand years, and therefore that much larger ones in the Erebus Volcanic Province are likely to have taken considerably longer than previously inferred. This warrants caution in applying a limited number of age determinations to define the absolute ages of events in the Ross Sea region

  20. Carbon isotope stratigraphy, magnetostratigraphy, and 40Ar/39Ar age of the Cretaceous South Atlantic coast, Namibe Basin, Angola

    Science.gov (United States)

    Strganac, Christopher; Salminen, Johanna; Jacobs, Louis L.; Polcyn, Michael J.; Ferguson, Kurt M.; Mateus, Octávio; Schulp, Anne S.; Morais, Maria Luísa; Tavares, Tatiana da Silva; Gonçalves, António Olímpio

    2014-11-01

    We present the δ13C and paleomagnetic stratigraphy for marine strata at the coast of southern Angola, anchored by an intercalated basalt with a whole rock 40Ar/39Ar radiometric age of 84.6 ± 1.5 Ma, being consistent with both invertebrate and vertebrate biostratigraphy. This is the first African stable carbon isotope record correlated to significant events in the global carbon record spanning the Late Cenomanian to Early Maastrichtian. A positive ∼3‰ excursion seen in bivalve shells below the basalt indicates the Cenomanian-Turonian Boundary Event at 93.9 Ma, during Oceanic Anoxic Event 2. Additional excursions above the basalt are correlated to patterns globally, including a negative ∼3‰ excursion near the top of the section interpreted as part of the Campanian-Maastrichtian Boundary Events. The age of the basalt ties the studied Bentiaba section to a pulse of Late Cretaceous magmatic activity around the South Atlantic and significant tectonic activity, including rotation, of the African continent.

  1. Potash-rich volcanic rocks and lamprophyres in western Shandong Province: 40Ar39Ar dating and source tracing

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Highly precise 40Ar39Ar dating results demonstrate that the ages of potash-rich volcanic rocks in western Shandong Province are 114.7-124.3 Ma, and that of the lamprophyres is 119.6 Ma. The potash-rich volcanic rocks have relatively high (87Sr/86Sr)i ratios ( 0.708715-0.711418)and distinctly negative εNd values ( -11.47 - -17.54), and are enriched in radiogenic lead (206Pb/204pb=17.341-17.622,207pb/204Pb=15.525-15.538, 208Pb/204pb = 37.563-37.684).Similarly, the lamprophyres also have quite low εNd values ( -11.57 - -19.64). Based on the fact that the Sr, Nd and Pb isotopic compositions of potash-rich volcanic rocks are very consistent with that of the clinopyroxene separates, and by integrating comprehensive analyses of their tectonic settings,and extensive comparisons of the Sr, Nd isotopic compositions with that of the related simultaneous rocks, it is concluded that the potash-rich volcanic rocks and lamprophyres in western Shandong Province were most possibly derived from the partial melting of enriched mantle which was caused by source contamination and metasomatism of subducted continental crustal materials.``

  2. High resolution mapping of Dense spike-ar (dsp.ar) to the genetic centromere of barley chromosome 7H.

    Science.gov (United States)

    Shahinnia, Fahimeh; Druka, Arnis; Franckowiak, Jerome; Morgante, Michele; Waugh, Robbie; Stein, Nils

    2012-02-01

    Spike density in barley is under the control of several major genes, as documented previously by genetic analysis of a number of morphological mutants. One such class of mutants affects the rachis internode length leading to dense or compact spikes and the underlying genes were designated dense spike (dsp). We previously delimited two introgressed genomic segments on chromosome 3H (21 SNP loci, 35.5 cM) and 7H (17 SNP loci, 20.34 cM) in BW265, a BC(7)F(3) nearly isogenic line (NIL) of cv. Bowman as potentially containing the dense spike mutant locus dsp.ar, by genotyping 1,536 single nucleotide polymorphism (SNP) markers in both BW265 and its recurrent parent. Here, the gene was allocated by high-resolution bi-parental mapping to a 0.37 cM interval between markers SC57808 (Hv_SPL14)-CAPSK06413 residing on the short and long arm at the genetic centromere of chromosome 7H, respectively. This region putatively contains more than 800 genes as deduced by comparison with the collinear regions of barley, rice, sorghum and Brachypodium, Classical map-based isolation of the gene dsp.ar thus will be complicated due to the infavorable relationship of genetic to physical distances at the target locus.

  3. 40Ar-39Ar Age and Geological Significance of the Sawur Gold Belt in Northern Xinjiang, China

    Institute of Scientific and Technical Information of China (English)

    SHEN Ping; SHEN Yuanchao; ZENG Qingdong; LIU Tiebing; LI Guangming

    2005-01-01

    The 40Ar-39Ar age method is employed in this work to analyze fluid inclusions of quartz in the ore bodies from the Kuo'erzhenkuola and Bu'erkesidai gold deposits in the Sawur gold belt, northern Xinjiang. The results show that the main mineralization occurred in 332.05±2.02-332.59±0.51 Ma and 335.53±0.32 Ma-336.78±0.50 Ma for the Kuo'erzhenkuola and Bu'erkesidai gold deposits respectively, indicating that the two deposits are formed almost at the same time, and the metallogenic time of the two deposits are close to those of the hosting rocks formed by volcanic activity of the Sawur gold belt. This geochronological study supplies new evidence for determining the timing of gold mineralization, the geneses of gold deposits, and identifies that in the Hercynian period, the Altay area developed a tectonic-magmatic-hydrothermal mineralization of the Early Carboniferous period, except the two known mineralization periods including the tectonic-magmatic-hydrothermal mineralization of the Devonian period and Late CarboniferousPermian period.

  4. Green FLASH: energy efficient real-time control for AO

    Science.gov (United States)

    Gratadour, D.; Dipper, N.; Biasi, R.; Deneux, H.; Bernard, J.; Brule, J.; Dembet, R.; Doucet, N.; Ferreira, F.; Gendron, E.; Laine, M.; Perret, D.; Rousset, G.; Sevin, A.; Bitenc, U.; Geng, D.; Younger, E.; Andrighettoni, M.; Angerer, G.; Patauner, C.; Pescoller, D.; Porta, F.; Dufourcq, G.; Flaischer, A.; Leclere, J.-B.; Nai, A.; Palazzari, P.; Pretet, D.; Rouaud, C.

    2016-07-01

    The main goal of Green Flash is to design and build a prototype for a Real-Time Controller (RTC) targeting the European Extremely Large Telescope (E-ELT) Adaptive Optics (AO) instrumentation. The E-ELT is a 39m diameter telescope to see first light in the early 2020s. To build this critical component of the telescope operations, the astronomical community is facing technical challenges, emerging from the combination of high data transfer bandwidth, low latency and high throughput requirements, similar to the identified critical barriers on the road to Exascale. With Green Flash, we will propose technical solutions, assess these enabling technologies through prototyping and assemble a full scale demonstrator to be validated with a simulator and tested on sky. With this R&D program we aim at feeding the E-ELT AO systems preliminary design studies, led by the selected first-light instruments consortia, with technological validations supporting the designs of their RTC modules. Our strategy is based on a strong interaction between academic and industrial partners. Components specifications and system requirements are derived from the AO application. Industrial partners lead the development of enabling technologies aiming at innovative tailored solutions with potential wide application range. The academic partners provide the missing links in the ecosystem, targeting their application with mainstream solutions. This increases both the value and market opportunities of the developed products. A prototype harboring all the features is used to assess the performance. It also provides the proof of concept for a resilient modular solution to equip a large scale European scientific facility, while containing the development cost by providing opportunities for return on investment.

  5. Oficina de trabalho: "mulher-uma viagem ao seu corpo"

    Directory of Open Access Journals (Sweden)

    Maria Helena Costa Amorim

    1996-06-01

    Full Text Available Nas mulheres brasileiras, a morbidade por câncer de colo uterino e de mama é alta, mesmo que estas patologias sejam preveníveis e diagnosticadas precocemente. A cobertura dos serviços de saúde nesta área é inadequada, considerando-se a tecnologia simples e barata a ser utilizada na prevenção e detecção precoce destes tipos de câncer. Observamos que poucas são as atividades desenvolvidas com o objetivo de educar a mulher quanto ao auto conhecimento do corpo. Dessa forma, em 1993, elaboramos uma Oficina de Trabalho intitulada: " Mulher-uma viagem ao seu corpo", composta de 6 (seis dinâmicas onde a participação de cada mulher é intensa por ser um processo envolvente. A Oficina é desenvolvida por 1 (um docente, 3 (três enfermeiras e acadêmicos de Enfermagem da Universidade Federal do Espírito Santo. São inscritas 30 (trinta participantes por Oficina, sendo que cada uma recebe crachá de participação. Esta oficina é composta de 6 (cinco dinâmicas que se desenvolvem num ambiente descontraído e aconchegante: Dinâmica 1 - História de Bolso; Dinâmica 2 - Toque das Mãos; Dinâmica 3 - Desenho/Modelagem; Dinâmica 4 - Viagem ao Corpo; Dinâmica 5 - O Auto Exame; Dinâmica 6 - Percebendo o corpo.

  6. 76 FR 4726 - Avaya Global Services, AOS Service Delivery, Worldwide Services Group, Including Workers Whose...

    Science.gov (United States)

    2011-01-26

    ... Employment and Training Administration Avaya Global Services, AOS Service Delivery, Worldwide Services Group... Assistance on October 20, 2010, applicable to workers of Avaya Global Services, AOS Service Delivery... Avaya Global Services, AOS Service Delivery had their wages reported through a separate...

  7. Onicomicoses: do Diagnóstico ao Tratamento

    OpenAIRE

    Kioshima, Érika Seki; Oliveira, Ana Carla Pozzi; Svidzinski, Terezinha Inez Estivalet

    2008-01-01

    Onicomicose é um termo amplo atribuído às infecções fúngicas que atingem as unhas. Quando causada por dermatófitos, é denominada manter ungueal, e quando por leveduras, oníquias. Há ainda as paroníquias que são infecções ao redor das unhas. Os dermatófitos são fungos queratinofílicos capazes de parasitar tecidos queratinizados do homem, de animais ou restos de queratina encon...

  8. Akreos Adapt AO Intraocular Lens Opacification: A Case Report

    Directory of Open Access Journals (Sweden)

    Matteo Forlini

    2013-09-01

    Full Text Available A 79-year-old hyperglycemic patient was referred to the ‘Santa Maria delle Croci' Hospital, Ravenna, Italy. He presented with visual impairment in the right eye. Four years ago, he had had an uneventful cataract surgery in the right eye. We observed an opacification of the intraocular lens (IOL causing significant visual disturbance. The IOL was exchanged. Unfortunately, pathologic analysis was not performed. Patient-related factors such as hyperglycemia and hypertension might have been responsible for the opacification. To our knowledge, there is only one previous report of opacification of the Akreos Adapt AO IOL.

  9. Elementos de vulnerabilidade individual de adolescentes ao HIV/AIDS

    OpenAIRE

    Melina Mafra Toledo; Renata Ferreira Takahashi; Mónica Cecilia De-La-Torre-Ugarte-Guanilo

    2011-01-01

    A adolescência é caracterizada pela experimentação e descoberta, pelo desenvolvimento da autonomia e pela sexualidade. O objetivo desse estudo foi identificar as evidências científicas da literatura sobre os elementos da dimensão individual da vulnerabilidade de adolescentes ao HIV/AIDS. Através da revisão sistemática integrativa, em bases e bancos de dados eletrônicos (Cinahl PubMed, Scopus, LILACS, Adolec, Dedalus, BDTD e Portal de Teses da Universidade de São Paulo) rastrearam-se trabalhos...

  10. Contabilidade gerencial como apoio ao "just in time"

    OpenAIRE

    Costa, Sérgio De Carvalho

    2010-01-01

    Descreve as técnicas da filosofia "Just in Time" e apresenta as modificações necessárias aos Sistemas Gerencias para que se tornem coerentes com a filosofia JIT, bem como meçam adequadamente a melhoria contínua da Empresa. Critica tanto o Custeio' Direto como o Custeio por Absorção, apresentando como alternativa o Custeio "ABC". Mostra como o JIT facilita o Custeio dos Produtos e destaca os aspectos estratégicos da Avaliação de Desempenho. Finalmente discorre sobre um estudo de...

  11. A combined noble gas and {sup 40}Ar-{sup 39}Ar study of Salt Lake Crater xenolith SL322 from Oahu, Hawaii

    Energy Technology Data Exchange (ETDEWEB)

    Trieloff, M. [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany); Rocholl, A. [Heidelberg Univ. (Germany). Mineralogisch-Petrographisches Inst.; Jessberger, E.K. [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)]|[Muenster Univ. (Germany). Inst. fuer Planetologie

    1998-12-31

    The microdistribution of noble gases in a garnet pyroxenite nodule from Salt Lake Crater (SLC), Oahu, Hawaii, was investigated by a detailed step-heating and -crushing analysis and a {sup 40}Ar-{sup 39}Ar-study. A noble gas component with MORB type argon, helium and neon resides in CO{sub 2}-rich fluid inclusions trapped in <30 km depth. This component was most probably derived from the nephelinitic SLC host magma and confirms the dominance of MORB type noble gases in the late post-erosional magmatic stages of Hawaiian volcanism, as suggested previsouly (Kurz et al., 1983; Valbracht et al., 1996). A second previously detected (Rocholl et al., 1996) low {sup 40}Ar/{sup 36}Ar ({proportional_to}5000) component turned out to be associated with two different reservoirs. The larger reservoir is most probably related to garnet, the other one is associated with low retentive sites containing few K and Cl and could not yet be adequately identified. The low {sup 40}Ar/{sup 36}Ar ({proportional_to}5000) component hosted by garnet can be interpreted as a mixture of MORB and plume type noble gas components with specific {sup 4}He/{sup 40}Ar ratios. The results demonstrate the complexity of the microdistribution of noble gases in ultramafic nodules and allow insight into plume induced metasomatism of the Hawaiian lithosphere. (orig.)

  12. Curvas de isodose no ar em uma sala de mamografia Air isodose curves in a mammography room

    Directory of Open Access Journals (Sweden)

    Maria Cecília Baptista Todeschini Adad

    2008-08-01

    Full Text Available OBJETIVO: O objetivo deste trabalho foi obter a distribuição da dose absorvida no ar numa sala de mamografia durante a simulação de um exame mamográfico, visando a reavaliar a necessidade do uso de barreiras de proteção radiológica nessas salas e a exposição das pacientes. MATERIAIS E MÉTODOS: Os dados da dose absorvida no ar foram coletados mediante simulação de exame mamográfico de um simulador de mama de BR12, em um equipamento Senograph 600T-Senix HF. Para tal, 158 pastilhas de CaSO4 foram distribuídas em malhas retangulares em torno do bucky, em três alturas distintas. RESULTADOS: O valor mais elevado da dose absorvida no ar, registrado no ponto central da superfície do simulador, centralizado no feixe primário, foi de 8,33 mGy, enquanto o menor valor registrado, devido exclusivamente ao espalhamento, foi de 0,008 mGy. CONCLUSÃO: Estes resultados indicam que o uso de blindagem adicional nas salas de mamografia pode não ser necessário na incidência crânio-caudal, desde que as distâncias consideradas neste trabalho sejam observadas. No entanto, eles enfatizam a necessidade de proteção da paciente.OBJECTIVE: The present study was aimed at evaluating the absorbed dose in air in a medical examination room during a mammography simulation, to re-evaluate the level of patients' exposure as well as the necessity of radiological protection barriers. MATERIALS AND METHODS: Data regarding absorbed dose in air were collected during mammography simulation with a BR12 breast phantom in a Senograph 600T-Senix HF mammograph. For this purpose, 158 CaSO4 dosimeters were distributed over rectangular grids around the bucky at three different heights. RESULTS: The highest value for absorbed dose in air recorded on the center of the phantom surface and centralized on the primary beam was 8.33 mGy, while the lowest value recorded exclusively due to radiation scattering was 0.008 mGy. CONCLUSION: These results indicate that the utilization

  13. The transcriptional programme of the androgen receptor (AR) in prostate cancer.

    Science.gov (United States)

    Lamb, Alastair D; Massie, Charlie E; Neal, David E

    2014-03-01

    The androgen receptor (AR) is essential for normal prostate and prostate cancer cell growth. AR transcriptional activity is almost always maintained even in hormone relapsed prostate cancer (HRPC) in the absence of normal levels of circulating testosterone. Current molecular techniques, such as chromatin-immunoprecipitation sequencing (ChIP-seq), have permitted identification of direct AR-binding sites in cell lines and human tissue with a distinct coordinate network evident in HRPC. The effectiveness of novel agents, such as abiraterone acetate (suppresses adrenal androgens) or enzalutamide (MDV3100, potent AR antagonist), in treating advanced prostate cancer underlines the on-going critical role of the AR throughout all stages of the disease. Persistent AR activity in advanced disease regulates cell cycle activity, steroid biosynthesis and anabolic metabolism in conjunction with regulatory co-factors, such as the E2F family, c-Myc and signal transducer and activator of transcription (STAT) transcription factors. Further treatment approaches must target these other factors.

  14. Further support for a Cretaceous age for the feathered-dinosaur beds of Liaoning,China:New 40Ar/39Ar dating of the Yixian and Tuchengzi Formations

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    We report new 40Ar/39Ar dating results obtained from total fusion and incremental-heating analyses of sanidine and biotite from three tuffs found interbedded within the fossil-bearing deposits of Liaoning, northeast China. The first is a new sample of the Bed 6 Sihetun tuff from the Yixian Formation, previously dated by our team as middle Early Cretaceous, and recently considered by Lo et al., partially reset due to metamorphism from a nearby basaltic sill. The second is the Yixian Bed 9 tuff from Hengdaozi considered by Lo et al. to be unaffected by metamorphism and whose age, based on total fusion 40Ar/39Ar dating of biotite, argues for a Jurassic age for the Yixian Formation.The third tuff is a previously undated tuff from the upper part of the underlying Tuchengzi Formation. Single crystal total fusion 40Ar/39Ar analyses of the Sihetun sanidine showed homogeneous radiogenic Ar, Ca/K ratios, excellent reproducibility and gave a mean age of 125.0 ± 0.18 (1SD) ±0.04 (SE) Ma. Single sanidine crystal total fusion 40Ar/39Aranalyses of the Hengdaozi tuff gave a mean age of 125.0 +0.19 (1SD) ± 0.04 (SE) Ma, which is indistinguishable from the Sihetun tuff. The Tuchengzi Formation tuff gave a mean age of 139.4 ± 0.19 (1SD) ± 0.05 (SE) Ma. Detailed laser incremental-heating analyses of biotite from Sihetun, Hengdaozi, and Tuchengzi tuffs show disturbed Ar release patterns and evidence of trapped argon components. We conclude from these analyses that the total fusion dates on biotite by Lo et al. are erroneously old and isotopic dating of both biotite and sanidine from tuffs of the Yixian Formation point to a middle Early Cretaceous age. The upper part of the Tuchengzi Formation can be referred to the Early Cretaceous.``

  15. Análise da disponibilidade da rede automática de monitoramento da qualidade do ar e seus reflexos no licenciamento ambiental realizado em São Paulo

    OpenAIRE

    José Carlos de Moura Xavier

    2011-01-01

    A qualidade do ar no estado de São Paulo é acompanhada pela Companhia Ambiental do Estado de São Paulo (CETESB) por meio de uma rede de monitoramento das concentrações de CO, SO2, NOx, O3 e material particulado, com o objetivo primordial de proteger a saúde humana. Falhas nesse acompanhamento podem reduzir a disponibilidade da rede e comprometer as estratégias da CETESB associadas à preservação da qualidade ambiental, entre elas a qualificação de municípios quanto ao grau de saturação da qual...

  16. Neon reduction program on Cymer ArF light sources

    Science.gov (United States)

    Kanawade, Dinesh; Roman, Yzzer; Cacouris, Ted; Thornes, Josh; O'Brien, Kevin

    2016-03-01

    In response to significant neon supply constraints, Cymer has responded with a multi-part plan to support its customers. Cymer's primary objective is to ensure that reliable system performance is maintained while minimizing gas consumption. Gas algorithms were optimized to ensure stable performance across all operating conditions. The Cymer neon support plan contains four elements: 1. Gas reduction program to reduce neon by >50% while maintaining existing performance levels and availability; 2. short-term containment solutions for immediate relief. 3. qualification of additional gas suppliers; and 4. long-term recycling/reclaim opportunity. The Cymer neon reduction program has shown excellent results as demonstrated through the comparison on standard gas use versus the new >50% reduced neon performance for ArF immersion light sources. Testing included stressful conditions such as repetition rate, duty cycle and energy target changes. No performance degradation has been observed over typical gas lives.

  17. Microanalysis of Ar and He bombarded biomedical polymer films

    Energy Technology Data Exchange (ETDEWEB)

    Manso Silvan, M. [Departamento de Fisica Aplicada C-XII, Universidad Autonoma de Madrid, 28049 Madrid (Spain)]. E-mail: miguel.manso@uam.es; Gago, R. [Departamento de Fisica Aplicada C-XII, Universidad Autonoma de Madrid, 28049 Madrid (Spain); Centro de Microanalisis de Materiales, Universidad Autonoma de Madrid, 28049 Madrid (Spain); Valsesia, A. [European Commission, Institute for Health and Consumer Protection, Via Enrico Fermi, 21020 Ispra (Italy); Climent Font, A. [Departamento de Fisica Aplicada C-XII, Universidad Autonoma de Madrid, 28049 Madrid (Spain); Centro de Microanalisis de Materiales, Universidad Autonoma de Madrid, 28049 Madrid (Spain); Duart, J.M. Martinez [Departamento de Fisica Aplicada C-XII, Universidad Autonoma de Madrid, 28049 Madrid (Spain); Rossi, F. [European Commission, Institute for Health and Consumer Protection, Via Enrico Fermi, 21020 Ispra (Italy)

    2007-04-15

    Implantations onto polyethyleneglycol, polycaprolactone and polymethylmethacrylate, carried out with Ar and He ions at 25 and 100 KeV with fluences of 5 x 10{sup 13} cm{sup -2}, have been made with identical ion currents (20 {mu}A) but different sweep areas in order to take into account the effect of the ion flux on the composition and structure of these biopolymers. Vibrational (Fourier transformed infrared spectroscopy), microanalytical (Rutherford backscattering and energy recoil detection) and microscopic techniques (atomic force microscopy) confirm that, even in this low fluence regime, the ion flux effect is responsible of scaled modifications. More interestingly, these techniques indicate that the damage seems to be higher for He. All these factors suggest that He could be preferentially used to engineer biomedical polymers exploiting the tailoring opportunities offered by ion flux effects.

  18. Spectroscopic properties of alkali atoms embedded in Ar matrix.

    Science.gov (United States)

    Jacquet, E; Zanuttini, D; Douady, J; Giglio, E; Gervais, B

    2011-11-07

    We present a theoretical investigation of visible absorption and related luminescence of alkali atoms (Li, Na, and K) embedded in Ar matrix. We used a model based on core polarization pseudopotentials, which allows us to determine accurately the gas-to-matrix shifts of various trapping sites. The remarkable agreement between our calculated results and the experimental spectra recorded by several authors allows us to establish a clear assignment of the observed spectra, which are made of contributions from crystalline sites on the one hand, and of grain boundary sites on the other hand. Our study reveals remarkably large Stokes shifts, up to 9000 cm(-1), which could be observed experimentally to identify definitely the trapping sites.

  19. Mean pion multiplicities in Ar+Sc collisions

    CERN Document Server

    Naskręt, Michał

    2016-01-01

    Preliminary results for mean negatively charged pion multiplicities $\\langle \\pi^- \\rangle$ using the $h^-$ method are presented for central Ar+Sc collisions at 13, 19, 30, 40, 75 and 150\\textit{A} GeV/c beam momentum. The data were recorded by the NA61/SHINE detector at the CERN SPS. Starting with rapidity distributions ${dn}/{dy}$ the procedure of obtaining total multiplicities is presented. The mean number of wounded nucleons $\\langle W\\rangle$ extracted from the Glissando MC model is used to calculate the ratio $\\langle \\pi^- \\rangle/\\langle W\\rangle.$ The results are compared to those from other experiments and their dependence on colliding systems and collision energy is discussed.

  20. A Model of White Dwarf Pulsar AR Scorpii

    CERN Document Server

    Geng, Jin-Jun; Huang, Yong-Feng

    2016-01-01

    A 3.56-hour white dwarf (WD) - M dwarf (MD) close binary system, AR Scorpii, was recently reported to show pulsating emission in radio, IR, optical, and UV, with a 1.97-minute period, which suggests the existence of a WD with a rotation period of 1.95 minutes. We propose a model to explain the temporal and spectral characteristics of the system. The WD is a nearly perpendicular rotator, with both open field line beams sweeping the MD stellar wind periodically. A bow shock propagating into the stellar wind accelerates electrons in the wind. Synchrotron radiation of these shocked electrons can naturally account for the broad-band (from radio to X-rays) spectral energy distribution of the system.

  1. Palaeomagnetism and K-Ar and 40Ar/39Ar ages in the Ali Sabieh area (Republic of Djibouti and Ethiopia): constraints on the mechanism of Aden ridge propagation into southeastern Afar during the last 10 Myr

    Science.gov (United States)

    Audin, L.; Quidelleur, X.; Coulié, E.; Courtillot, V.; Gilder, S.; Manighetti, I.; Gillot, P.-Y.; Tapponnier, P.; Kidane, T.

    2004-07-01

    A new detailed palaeomagnetic study of Tertiary volcanics, including extensive K-Ar and 40Ar/39Ar dating, helps constrain the deformation mechanisms related to the opening processes of the Afar depression (Ethiopia and Djibouti). Much of the Afar depression is bounded by 30 Myr old flood basalts and floored by the ca 2 Myr old Stratoid basalts, and evidence for pre-2 Ma deformation processes is accessible only on its borders. K-Ar and 40Ar/39Ar dating of several mineral phases from rhyolitic samples from the Ali Sabieh block shows indistinguishable ages around 20 Myr. These ages can be linked to separation of this block in relation to continental breakup. Different amounts of rotation are found to the north and south of the Holhol fault zone, which cuts across the northern part of the Ali Sabieh block. The southern domain did not record any rotation for the last 8 Myr, whereas the northern domain experienced approximately 12 +/- 9° of clockwise rotation. We propose to link this rotation to the counter-clockwise rotation observed in the Danakil block since 7 Ma. This provides new constraints on the early phases of rifting and opening of the southern Afar depression in connection with the propagation of the Aden ridge. A kinematic model of propagation and transfer of extension within southern Afar is proposed, with particular emphasis on the previously poorly-known period from 10 to 4 Ma.

  2. Planktic foraminifer census data from Northwind Ridge cores PI-88-AP P3, PI-88-AR P7 and PI-88-AR P9, Arctic Ocean

    Science.gov (United States)

    Foley, Kevin M.; Poore, Richard Z.

    1993-01-01

    The U.S. Geological Survey recovered 9 piston cores from the Northwind Ridge in the Canada Basin of the Arctic Ocean from a cruise of the USCGC Polar Star during 1988. Preliminary analysis of the cores suggests sediments deposited on Northwind Ridge preserve a detailed record of glacial and interglacial cycles for the last few hundred-thousand to one million years. This report includes quantitative data on foraminifers and selected sediment size-fraction data in 98 samples from Northwind Ridge core PI-88AR P3, 51 samples from core PI-88-AR P7 and 117 samples from core PI-88-AR P9.

  3. Tracking the timing of subduction and exhumation using 40Ar/39Ar phengite ages in blueschist- and eclogite-facies rocks (Sivrihisar, Turkey)

    Science.gov (United States)

    Fornash, Katherine F.; Cosca, Michael A.; Whitney, Donna L.

    2016-07-01

    Geochronologic studies of high-pressure/low-temperature rocks can be used to determine the timing and rates of burial and exhumation in subduction zones by dating different stages of the pressure-temperature history. In this study, we present new in situ UV laser ablation 40Ar/39Ar phengite ages from a suite of lawsonite blueschist- and eclogite-facies rocks representing different protoliths (metabasalt, metasediment), different structural levels (within and outside of a high-strain zone), and different textural positions (eclogite pod core vs. margin) to understand the timing of these events in an exhumed Neo-Tethyan subduction zone (Sivrihisar Massif, Tavşanlı Zone, Turkey). Weighted mean in situ 40Ar/39Ar ages of phengite from the cores of lawsonite eclogite pods (90-93 Ma) are distinctly older than phengite from retrogressed, epidote eclogite (82 ± 2 Ma). These ages are interpreted as the age of peak and retrograde metamorphism, respectively. Eclogite records the narrowest range of ages (10-14 m.y.) of any rock type analyzed. Transitional eclogite- and blueschist-facies assemblages and glaucophane-rimmed lawsonite + garnet + phengite veins from eclogite pod margins record a much wider age range of 40Ar/39Ar ages (~20 m.y.) with weighted mean ages of ~91 Ma. Blueschists and quartzites record more variable 40Ar/39Ar ages that may in part be related to structural position: samples within a high-strain zone at the tectonic contact of the HP rocks with a meta-ultramafic unit have in situ UV laser ablation 40Ar/39Ar ages of 84.0 ± 1.3-103.7 ± 3.1 Ma, whereas samples outside this zone range to older ages (84.6 ± 2.4-116.7 ± 2.7 Ma) and record a greater age range (22-38 m.y.). The phengite ages can be correlated with the preservation of HP mineral assemblages and fabrics as well as the effects of deformation. Collectively, these results show that high-spatial resolution UV laser ablation 40Ar/39Ar phengite data, when considered in a petrologic and structural

  4. The Contribution of ArsB to Arsenic Resistance in Campylobacter jejuni

    OpenAIRE

    Zhangqi Shen; Jing Han; Yang Wang; Orhan Sahin; Qijing Zhang

    2013-01-01

    Arsenic, a toxic metalloid, exists in the natural environment and its organic form is approved for use as a feed additive for animal production. As a major foodborne pathogen of animal origin, Campylobacter is exposed to arsenic selection pressure in the food animal production environments. Previous studies showed that Campylobacter isolates from poultry were highly resistant to arsenic compounds and a 4-gene operon (containing arsP, arsR, arsC, and acr3) was associated with arsenic resistanc...

  5. Testing coeffcients of AR and bilinear time series models by a graphical approach

    Institute of Scientific and Technical Information of China (English)

    IP; WaiCheung

    2008-01-01

    AR and bilinear time series models are expressed as time series chain graphical models, based on which, it is shown that the coefficients of AR and bilinear models are the conditional correlation coefficients conditioned on the other components of the time series. Then a graphically based procedure is proposed to test the significance of the coeffcients of AR and bilinear time series. Simulations show that our procedure performs well both in sizes and powers.

  6. Localização e freqüência das alterações de campo visual no glaucoma primário de ângulo aberto na estratégia SITA (Swedish Interactive Threshold Algorithm Location and frequency of visual field defects as measured by SITA (Swedish Interactive Threshold Algorithm strategy in primary open angle glaucoma

    Directory of Open Access Journals (Sweden)

    Vanessa Cristina Ruegger Nascimento

    2005-10-01

    Full Text Available OBJETIVO: Caracterizar os defeitos de campo visual nos exames realizados com o perímetro Humphrey®, estratégia SITA - Swedish Interactive Threshold Algorithm - segundo sua freqüência e localização em pacientes com glaucoma primário de ângulo aberto (GPAA. MÉTODOS: Realizamos análise retrospectiva de 6.200 prontuários. Avaliamos o exame de campo visual dos pacientes que preenchiam os critérios de inclusão e os dividimos em glaucoma leve, moderado e grave de acordo com a classificação de Hodapp. Definimos os seguintes defeitos glaucomatosos: degrau nasal, escotoma paracentral, escotoma arqueado, escotoma Seidel, defeito temporal em cunha, diminuição generalizada de sensibilidade, escotoma anular e campo tubular. Utilizamos diagrama que correlaciona os pontos do campo visual com as regiões do disco óptico e avaliamos as regiões mais acometidas de acordo com a densidade de pontos comprometidos. A análise estatística foi realizada aplicando-se o teste t de Student. RESULTADOS: Selecionamos 152 pacientes com idade média de 66,5±9,6%, sendo 59,9% do sexo feminino. No glaucoma leve o defeito campimétrico mais freqüente foi o degrau nasal superior, seguido respectivamente pelo escotoma paracentral e degrau nasal inferior. A diminuição generalizada de sensibilidade, apesar de rara, ocorreu em 7,8% desses pacientes. A região superior foi mais acometida que a inferior. CONCLUSÃO: O degrau nasal superior e o escotoma paracentral foram os defeitos mais freqüentemente observados no glaucoma primário de ângulo aberto em fase inicial pela estratégia SITA, e o hemicampo superior foi a região mais acometida. A diminuição generalizada de sensibilidade foi defeito glaucomatoso precoce.PURPOSE: To evaluate the frequency, location and pattern of visual field defects as measured by SITA strategy in primary open angle glaucoma (POAG. METHODS: Six thousand and two-hundred charts were reviewed. One hundred and fifty two patients who

  7. Experiencia en el cuidado de enfermería: herida de abdomen abierto en el adulto Experiência no cuidado de enfermagem: ferida de abdômen aberto em adultos Nursing care experience: open abdomen wound in adults

    Directory of Open Access Journals (Sweden)

    Ricardo Alfonso Castro Becerra

    2011-12-01

    -truturada feita ao profissional de enfermagem da Clínica de feridas que foi tomada como referência, servindo de guia na qual é recomendado aprofundar em pesquisas posteriores. Resultados: um protocolo de cuidados de enfermagem é estruturado e integrado por doze (12 diagramas de fluxo, agrupados e distribuídos em quatro lineamentos básicos. Conclusões: O protocolo é o resultado da descrição e análise, dos procedimentos realizados pelo pessoal de enfermagem, contando com uma ampla experiência no cuidado de pessoas com feridas de abdômen, à luz da literatura. No entanto, a continuação da estruturação deste protocolo é necessária, levando em conta tanto o processo de cicatrização quanto as dimensões psicossociais que intervém no cuidado dos adultos com feridas abertas no abdômen.Goal: the creation of a nursing protocol for adults with open abdomen wounds, in a State-owned social enterprise of the city of Bogota. Method: a descriptive and transversal study, whose sample was constituted by four (4 people with an open abdomen wound, and the contribution of the experience of the institution's professional nurse. The information gathered from an observation guide, from the photographic register of the evolution of four adults with an open abdomen wound and from a semi-structured interview made to a nursing professional form the Wound Clinics taken as reference, which serves as a guide and should be used further in future researches. Results: a nursing protocol is created, and is composed by twelve (12 flowcharts, grouped and divided in four basic guidelines. Conclusions: the protocol is the result of the description and analysis of the procedures performed by the nursing staff, who has a rich experience in the care of people with open abdomen wounds thanks to literature available to them. However, the construction of the protocol must be continued, taking into consideration not only the physiological aspect of the scarification process, but also the psychosocial

  8. Modelo preditivo ao abandono do tratamento da tuberculose

    Directory of Open Access Journals (Sweden)

    Eveline de Almeida Silva

    Full Text Available Objetivou-se construir um modelo preditivo tomando como variáveis explicativas as características dos indivíduos com tuberculose para definir o tratamento mais adequado. Pesquisa do tipo observacional descritiva, de abordagem quantitativa. A população alvo (n=1925 foi retirada do Sistema de Informação de Agravos de Notificação de João Pessoa- PB, entre 2001 e 2008. No modelo final a razão de chances (OR das variáveis para o risco ao abandono foram: escolaridade em ensino médio (OR=1,56 e em ensino superior (OR=42,99, cor (OR=2,29 e reingresso após abandono (OR=2,71. A tomada de decisão deverá ser direcionada ao modelo de melhor adequação para se identificar os indivíduos passíveis de abandonar o tratamento.

  9. Illuminating Free-floating Planet Demographics with Keck AO

    Science.gov (United States)

    Henderson, Calen B.

    2017-01-01

    The frequency and mass function of free-floating planets (FFPs) are unknown. Gravitational microlensing is able to explore the demographics of FFPs, which are identifiable as short-timescale microlensing events, lasting of-order 1 day for Jupiter-mass planets. In 2011, the MOA ground-based microlensing survey group announced the discovery of an excess of short-timescale microlensing events over what was expected from Galactic models that incorporate stellar densities and kinematics. They account for this excess by positing a population of Jupiter-mass FFPs that outnumbers stars by a ratio of nearly 2:1. However, there are several other possible astrophysical explanations for short-timescale microlensing events, including bound planets on wide orbits and high-velocity stars. Although the specific events identified by MOA lack mass measurements, high-resolution imaging can determine whether the lens systems are luminous, which would exclude the FFP conclusion through proof by contradiction. We have taken H-band adaptive optics (AO) observations of the MOA FFP candidates using NIRC2 on Keck II in order to test this result. Here I will present preliminary results from these AO observations, which will help inform our understanding of the demographics of FFPs.

  10. Defining the Tristan-Gough Hotspot: High-Resolution 40Ar/39Ar Dating of Volcanism at Tristan da Cunha

    Science.gov (United States)

    Schnur, S.; Koppers, A. A. P.

    2015-12-01

    Explaining the spatial distribution of intra-plate volcanism is an important geologic problem. The Walvis Ridge is a uniquely-shaped hotspot trail in the South Atlantic that is not fully explained by the prevailing mantle plume paradigm. About halfway through its 130 Myr history, Walvis shows a morphological shift from a continuous ridge to a diffuse region of guyots arranged in two volcanic tracks. Recent volcanism at both Tristan da Cunha and Gough Island suggests these tracks are produced by two hotspots sourced from a single plume. However, the islands are located more than 400 km apart, which does not conform to our understanding of plumes as narrow, semi-stationary upwellings. It remains unclear which of the two islands better represents the current plume position. New ages from previously unstudied seamounts show that Tristan is younger than surrounding volcanism, whereas Gough appears to fit the local age progression (Schnur et al. 2014). Modern radiometric ages suggest the main island of Tristan may have been active for up to 1.3 ± 0.2 Myr (O'Connor and le Roex 1992). However, the seemingly older Inaccessible, Nightingale and Middle islands have yet to be reliably dated and could be up to 18 ± 4 Ma based on K-Ar ages (Miller in Baker et al. 1964). In order to confidently delineate the duration of volcanism at Tristan, we present the results of 29 new 40Ar/39Ar step-heating experiments on biotite, hornblende, plagioclase and groundmass separates from rocks collected on Inaccessible, Nightingale and Middle islands. Our results show that volcanism on all three islands is young, in most cases Middle islands are therefore too old and should be ignored in interpretations of plume dynamics. These results also show that magma was being supplied simultaneously to both Tristan and Gough over recent geologic time. Two possible explanations for this are that (1) there is a broad plume underlying the area, with focus points at Tristan and Gough or (2) hotspot magma

  11. Development and validation of a chromatographic method for determining Clematichinenoside AR and related impurities

    Directory of Open Access Journals (Sweden)

    Zhou Yang

    2012-12-01

    Full Text Available Abstract Background Clematichinenoside AR is a promising lead compound for the treatment of rheumatoid arthritis. A systematic research for the related impurities in AR bulk samples is still lacking. For the safe use of this natural product in future clinical practice, the structure and content of each constituent, including the main ingredient as well as the impurities in AR bulk sample must be characterized in detail. Results A simple and stability indicating RP-HPLC method was developed and validated for determining the purity of clematichinenoside AR (AR, a natural product from the roots of Clematis manshurica Rupr. (Ranunculaceae with the potential of treating rheumatoid arthritis. Five impurities were characterized, and impurity 2 (Clematomandshurica saponin F is a new triterpenoid saponin isolated from this product. Optimum separation for clematichinenoside AR and five related impurities was carried out on an Agilent octadecylsilane bonded silica gel column (TC-C18, 4.6 mm ×150 mm, 5 μm using a gradient HPLC method. The validation results showed good sensitivity, specificity, linearity(r2>0.9992 precision(RSD Conclusion Five related impurities of clematichinenoside AR were characterized, including a new triterpenoid saponins firstly found in clematichinenoside AR bulk samples. In the simple chromatographic method for determining clematichinenoside AR and its related impurities in bulk samples, the correction factor was better for the quality control in the relative stable concentrations.

  12. Alteration of natural (37)Ar activity concentration in the subsurface by gas transport and water infiltration.

    Science.gov (United States)

    Guillon, Sophie; Sun, Yunwei; Purtschert, Roland; Raghoo, Lauren; Pili, Eric; Carrigan, Charles R

    2016-05-01

    High (37)Ar activity concentration in soil gas is proposed as a key evidence for the detection of underground nuclear explosion by the Comprehensive Nuclear Test-Ban Treaty. However, such a detection is challenged by the natural background of (37)Ar in the subsurface, mainly due to Ca activation by cosmic rays. A better understanding and improved capability to predict (37)Ar activity concentration in the subsurface and its spatial and temporal variability is thus required. A numerical model integrating (37)Ar production and transport in the subsurface is developed, including variable soil water content and water infiltration at the surface. A parameterized equation for (37)Ar production in the first 15 m below the surface is studied, taking into account the major production reactions and the moderation effect of soil water content. Using sensitivity analysis and uncertainty quantification, a realistic and comprehensive probability distribution of natural (37)Ar activity concentrations in soil gas is proposed, including the effects of water infiltration. Site location and soil composition are identified as the parameters allowing for a most effective reduction of the possible range of (37)Ar activity concentrations. The influence of soil water content on (37)Ar production is shown to be negligible to first order, while (37)Ar activity concentration in soil gas and its temporal variability appear to be strongly influenced by transient water infiltration events. These results will be used as a basis for practical CTBTO concepts of operation during an OSI.

  13. Development of a Control and Vision Interface for an AR.Drone

    OpenAIRE

    Cheema Prasad; Luo Simon; Gibbens Peter

    2016-01-01

    The AR.Drone is a remote controlled quadcopter which is low cost, and readily available for consumers. Therefore it represents a simple test-bed on which control and vision research may be conducted. However, interfacing with the AR.Drone can be a challenge for new researchers as the AR.Drone's application programming interface (API) is built on low-level, bit-wise, C instructions. Therefore, this paper will demonstrate the use of an additional layer of abstraction on the AR.Drone’s API via t...

  14. Atmospheric Ar and Ne returned from mantle depths to the Earth's surface by forearc recycling.

    Science.gov (United States)

    Baldwin, Suzanne L; Das, J P

    2015-11-17

    In subduction zones, sediments, hydrothermally altered lithosphere, fluids, and atmospheric gases are transported into the mantle, where ultrahigh-pressure (UHP) metamorphism takes place. However, the extent to which atmospheric noble gases are trapped in minerals crystallized during UHP metamorphism is unknown. We measured Ar and Ne trapped in phengite and omphacite from the youngest known UHP terrane on Earth to determine the composition of Ar and Ne returned from mantle depths to the surface by forearc recycling. An (40)Ar/(39)Ar age [7.93 ± 0.10 My (1σ)] for phengite is interpreted as the timing of crystallization at mantle depths and indicates that (40)Ar/(39)Ar phengite ages reliably record the timing of UHP metamorphism. Both phengite and omphacite yielded atmospheric (38)Ar/(36)Ar and (20)Ne/(22)Ne. Our study provides the first documentation, to our knowledge, of entrapment of atmospheric Ar and Ne in phengite and omphacite. Results indicate that a subduction barrier for atmospheric-derived noble gases does not exist at mantle depths associated with UHP metamorphism. We show that the crystallization age together with the isotopic composition of nonradiogenic noble gases trapped in minerals formed during subsolidus crystallization at mantle depths can be used to unambiguously assess forearc recycling of atmospheric noble gases. The flux of atmospheric noble gas entering the deep Earth through subduction and returning to the surface cannot be fully realized until the abundances of atmospheric noble gases trapped in exhumed UHP rocks are known.

  15. Natural ³⁷Ar concentrations in soil air: implications for monitoring underground nuclear explosions.

    Science.gov (United States)

    Riedmann, Robin A; Purtschert, Roland

    2011-10-15

    For on-site inspections (OSI) under the Comprehensive Nuclear-Test-Ban Treaty (CTBT) measurement of the noble gas ³⁷Ar is considered an important technique. ³⁷Ar is produced underground by neutron activation of Calcium by the reaction ⁴⁰Ca(n,α)³⁷Ar. The naturally occurring equilibrium ³⁷Ar concentration balance in soil air is a function of an exponentially decreasing production rate from cosmic ray neutrons with increasing soil depth, diffusive transport in the soil air, and radioactive decay (T(1/2): 35 days). In this paper for the first time, measurements of natural ³⁷Ar activities in soil air are presented. The highest activities of ~100 mBq m⁻³ air are 2 orders of magnitude larger than in the atmosphere and are found in 1.5-2.5 m depth. At depths > 8 m ³⁷Ar activities are < 20 mBq m⁻³ air. After identifying the main ³⁷Ar production and gas transport factors the expected global activity range distribution of ³⁷Ar in shallow subsoil (0.7 m below the surface) was estimated. In high altitude soils, with large amounts of Calcium and with low gas permeability, ³⁷Ar activities may reach values up to 1 Bq m⁻³.

  16. OBSOLESCÊNCIA PROGRAMADA E TEORIA DO DECRESCIMENTO VERSUS DIREITO AO DESENVOLVIMENTO E AO CONSUMO (SUSTENTÁVEIS)

    OpenAIRE

    2012-01-01

    Inspirado em um documentário intitulado “Prêt à Jeter”, este texto tem como objetivo central colocar em apreciação algumas reflexões acerca da obsolescência programada como uma das estratégias do modelo de desenvolvimento capitalista e ensaiar uma reposta às seguintes questões: para combater a obsolescência programada se faz necessária a defesa de uma “teoria do decrescimento”? Sendo a obsolescência programada uma das estratégias da sociedade de consumo, é possível combatê-la e, ao mesmo temp...

  17. Implante Coclear: estudos concernentes à biopolítica, ao biopoder e ao biocapital em III volumes

    OpenAIRE

    Garcia, Eduardo de Campos

    2015-01-01

    Esta tese, embora aparentemente trate de assuntos concernentes ao Implante Coclear, seu objeto esbarra numa análise do que de modo visuoimperceptual autoriza a operacionalidade das modificações corporais que implicam do imbricamento entre homem e máquina: pela criação de linguagem clínico discursiva, na ordem jurídico-biológica, nas tramas interpessoais e pela própria pessoa que se autodeclara ciborgue de ouvido biônico e que acaba envolvida pela ideia da formação de outras identidades e de u...

  18. Influência do borbulhamento de ar no sistema água e etanol: desenvolvimento do modelo de C. H. Weis.

    OpenAIRE

    Célia Regina Andrade dos Santos

    2009-01-01

    O conhecimento das pressões parciais do etanol e da água, em função da composição da respectiva mistura binária líquida, para dada temperatura, permite efetuar a integração numérica da equação diferencial que rege a troca de componentes entre a fase gasosa e a líquida. Para isto é suposto que o ar na saída da mistura etanol e água corresponda ao equilíbrio. A equação diferencial utilizada é uma variante da clássica equação de Rayleigh para destilação simples. Partindo de dados tabelados para ...

  19. Contribuição ao estudo do problema alimentar da Amazônia

    Directory of Open Access Journals (Sweden)

    João de Barros Barreto

    1947-12-01

    Full Text Available Salientando os diversos aspectos a atender, para a solução racional do problema da alimentação na Amazônia, aliás já fixados em 1941 pela Comissão que traçou as linhas gerais de um plano de saneamento dessa vasta região, aludem os A.A. às realizações já empreendidas dentro do programa traçado, e que versaram apenas sôbre os hábitos alimentares de um grande núcleo de população e sôbre o valor nutritivo de alguns elementos pouco conhecidos da fauna e da flora locais. Abordam, à guisa de ensaio, neste trabalho, o ponto concernente ao planejamento de regimes adequados, que se adaptem tanto às exigências, como as possibilidades regionais. Frisam, então, de início, as bases racionais a que devem eles obedecer respeito não só à redução do total de calorias, fornecidas, nos seus 2/3, por hidratos de carbono e ao qual se subordinam as cotas das três principais vitaminas do complexo B,* como também a restrição, igualmente indicada, da taxa de proteínas; respeito, ainda, as cotas recomendáveis das vitaminas A e C e de cálcio, dando aí especial atenção ao detalhe da sua aproveitabilidade. Referem, de passagem, à conveniência de não se descurar do problema do ferro alimentar, em face das endemias reinantes na região e das dificuldades para fazer, artificialmente, o enriquecimento marcial dos regimes, já que, para instituí-los, partem do principio de ser vantajoso lançar mão de recursos de produção local, sem ficar em marcada dependência de grandes centres distribuidores regionais. Mostrando as dificuldades para a utilização, na escala desejada, da carne e leite de vaca, como artigos básicos de regime — e apontam, entre os percalços, os inerentes ao transporte e conservação desses alimentos — apresentam uma tabela básica, para o adulto em trabalho moderado, a qual lhe fornece 2.600 calorias diárias e obedece aos pontos fundamentais já aludidos. Nela figuram: os peixes, cujas variedades de

  20. Arsenic phytoextraction and hyperaccumulation by fern species Fitoextração e hiperacumulação de arsênio por espécies de samambaias

    Directory of Open Access Journals (Sweden)

    Maria Isidoria Silva Gonzaga

    2006-02-01

    Full Text Available Arsenic (As is an ubiquitous trace metalloid found in all environmental media. Its presence at elevated concentrations in soils derives from both anthropogenic and natural inputs. Arsenic is a toxic and carcinogenic element, which has caused severe environmental and health problem worldwide. Technologies currently available for the remediation of arsenic-contaminated sites are expensive, environmentally disruptive, and potentially hazardous to workers. Phytoextraction, a strategy of phytoremediation, uses plants to clean up contaminated soils and has been successfully applied to arsenic contaminated soils. It has the advantage of being cost-effective and environmentally friendly. A major step towards the development of phytoextraction of arsenic-impacted soils is the discovery of the arsenic hyper accumulation in ferns, first in Pteris vittata, which presented an extraordinary capacity to accumulate 2.3% arsenic in its biomass. Another fern, Pityrogramma calomelanos was found to exhibit the same hyperaccumulating characteristics. After that, screening experiments have revealed that the Pteris genus is really unique in that many species have the potential to be used in phytoextraction of arsenic. In general, these plants seem to have both constitutive and adaptive mechanisms for accumulating or tolerating high arsenic concentration. In the past few years, much work has been done to understand and improve the hyperaccumulating capability of these amazing plants. In particular, the field of molecular biology seems to hold the key for the future of the phytoremediation.O arsênio e um metalóide traço encontrado basicamente em todos os ambientes. Elevadas concentrações de arsênio no solo podem acontecer naturalmente devido ao intemperismo de rochas ricas em arsênio, como também de atividades antropogênicas. O arsênio é um elemento tóxico e cancerígeno. Em muitas partes do mundo, a contaminação pelo arsênio tem causado problemas