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Sample records for agente seletivo alternativos

  1. ESTERILIZAÇÃO QUÍMICA E AGENTES GELEIFICANTES ALTERNATIVOS NA PROPAGAÇÃO VEGETATIVA IN VITRO DO ABACAXIZEIRO ‘VITÓRIA’

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    RODRIGO DA SILVA OLIVEIRA

    2015-12-01

    Full Text Available RESUMO O objetivo deste trabalho foi avaliar a eficiência da esterilização química do meio de cultura e de agentes geleificantes alternativos e sua influência no desenvolvimento in vitro e ex vitro de plantas de abacaxizeiro ‘Vitória’. O meio de cultivo utilizado foi composto pelos sais do MS e vitaminas de White, com 30 g L-1 de sacarose e 100 mg L-1 de mioinositol. Foram realizadas duasformas de esterilização dos meios de cultivo e das vidrarias: em autoclave a 121°C e com solução de hipoclorito de sódio (NaClO a 0,003% para enxágue das vidrarias e 0,0003% no meio de cultivo. Os agentesgeleificantes testados foram: M1: ágar (6,0 g L-1; M2: amido de milho (60,0 g L-1; M3: ágar (3,0 g L-1 + amido de milho (30,0 g L-1 e M4: ágar (3,0 g L-1 + amido de mandioca (30,0 g L-1. Após 30 dias de cultivo in vitro, constatou-se que o NaClO e os agentes geleificantes alternativos não interferiram nocrescimento e no desenvolvimento das mudas. Parte das mudas de cada tratamento foi aclimatizada durante 90 dias,após os quais se verificou que não houve influência dos agentes geleificantes no crescimento destas, e,para a maioria dos parâmetros avaliados, as mudas oriundas dos tratamentos envolvendo a esterilização química apresentaram resultados semelhantes ou superiores às dos meios autoclavados.

  2. Avaliação de métodos de inoculação, controle químico e alternativo de Pseudoperonospora cubensis (Berk. e Curt.), agente causal do mildio do pepino (Cucumis sativus L.)

    OpenAIRE

    Caballero Almada, Juana Beatriz

    2012-01-01

    No presente trabalho foram avaliados diferentes métodos de inoculação de Pseudoperonospora cubensis (Berk. e Curt.), agente causal do míldio em pepino (Cucumis sativus L.), e o efeito da aplicação de produtos químicos bem como de produtos alternativos no controle do patógeno. Os experimentos foram realizados no período de março a novembro de 1997, no Laboratório de Fitopatologia e em Casa de Vegetação do Setor de Ciências Agrárias da UFPR, Curitiba. Nos 3 experimentos com delineamento inteira...

  3. Meios de cultura semi-seletivos para Macrophomina phaseolina

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    Selma Rogéria de Carvalho Nascimento

    2014-12-01

    Full Text Available Macrophomina phaseolina (Tassi Golidanich é um fungo habitante do solo importante economicamente devido ao amplo número de espécies de plantas que infectam e da dificuldade do seu controle. Vários estudos envolvendo densidade de inóculo, taxonomia, sobrevivência, necessitam de meios de cultura seletivo ou semi-seletivo. O objetivo do trabalho foi avaliar 16 meios de cultura quanto à especificidade a este patógeno, proporcionando maior porcentagem de detecção do seu crescimento e menor número de contaminações, para substituir o meio semi-seletivo RB modificado, rotineiramente utilizado em estudos deste patógeno. O meio semi-seletivo RB modificado é bastante eficiente e contém em sua composição o fungicida metalaxyl (inibidor de oomycetos, que atualmente não se encontra disponível comercialmente em formulação simples, sem adição do Mancozeb ou Clorotalonil que inibem o crescimento do fungo M. phaseolina. Os meios de cultura avaliados foram repicados com o inóculo do fungo produzido em substrato areno-orgânico, contido em bolsas de náilon, recuperados após 30 dias de um solo não autoclavado, contido em uma bandeja. Cada meio de cultura avaliado tiveram 7 repetições, representadas por uma placa de Petri. Para as comparações das médias das porcentagens do crescimento de M. phaseolina e do número de contaminantes foi utilizado o teste de Scott-knott a 5% de probabilidade e os valores em porcentagem foram transformados em arc sem (√/100. Dentre os meios de cultura avaliados os MSTP 1 [(BDA com tetraciclina 50 mg.L-1 mais propamocarb a 1 mL.L-1(Previcur N® 72,2% p.a.], MSRP 0,5 (BDA com rifampicina 100 mg.L-1 mais fungicida propamocarb a 0,5 mL.L-1 e MSRP 1 (BDA com rifampicina 100 mg.L-1 mais fungicida propamocarb a 1 mL.L-1 proporcionaram maior porcentagem e detecção do fungo M. phaseolina e menor número de contaminações por outros fungos e bactérias. Estes meios de cultura semi-seletivos podem ser

  4. Glyphosate em mistura com herbicidas alternativos para o manejo de plantas daninhas Glyphosate combined with alternative herbicides for vegetation management

    OpenAIRE

    P.A. Monquero; P.J. Christoffoleti; C.T.D. Santos

    2001-01-01

    O uso intensivo de glyphosate como herbicida não-seletivo tem selecionado espécies de plantas daninhas tolerantes. Dessa forma, é importante que sejam estudadas misturas de tanque com herbicidas de mecanismos de ação alternativos e que apresentem efeitos sinergísticos ou aditivos. Por essa razão, foi instalado um experimento inteiramente casualizado, composto por 13 tratamentos e 4 repetições, em casa de vegetação da Universidade de São Paulo - ESALQ/USP, Piracicaba-SP, com as plantas daninha...

  5. Controle alternativo de Colletotrichum acutatum agente causal da queda prematura dos frutos cítricos Alternative control of Colletotrichum acutatum, causal agent of postbloom fruit drop of citrus

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    Katia Cristina Kupper

    2009-12-01

    Full Text Available A queda prematura dos frutos cítricos (QPFC, causada por Colletotrichum acutatum, dados os grandes prejuízos que têm causado aos produtores, constitui-se numa doença de grande importância econômica. O controle da doença é feito predominantemente mediante uso de fungicidas, que eleva o custo de produção e afeta negativamente o meio ambiente. Diante disso, este trabalho teve por objetivo buscar um método alternativo de controle da QPFC, mediante o uso de agentes de biocontrole ou de biofertilizantes. Diferentes concentrações de biofertilizantes (originários de duas fontes distintas e denominados de Bio1 e Bio 2; três isolados de Bacillus subtilis (ACB-69; 72 e 77 e três isolados de Trichoderma spp. (ACB-14; 37 e 39 foram testados, isoladamente ou em combinação, sob condições de laboratório, quanto à capacidade inibitória da germinação de conídios de C. acutatum. Estudaram-se, ainda, a produção de metabólitos termoestáveis por B. subtilis e o efeito sobre a germinação do patógeno. Quinze isolados de B. subtilis foram testados quanto à capacidade de prevenir a infecção por C. acutatum em flores destacadas de lima- ácida 'Tahiti' e, no campo, foram instalados dois experimentos, visando a testar ACBs e biofertilizantes no controle da doença. Verificou-se que o isolado ACB-72 (B. subtilis e ACB-37 (T. pseudokoningii foram os que mais inibiram a germinação do patógeno. Quanto à produção de metabólitos termoestáveis, ACB-69 e 77 foram os mais eficientes em produzir substâncias antifúngicas, e em quantidades suficientes para inibirem a germinação do patógeno. A mistura dos quatro isolados de Bacillus (ACBs: 69; 72; 77 e AP3 foi o que apresentou maior porcentagem de inibição (73%. Os biofertilizantes (Bio1 e Bio2, em concentrações acima de 10% e, quando em associação com isolados de Trichoderma spp., promoveram maiores inibições na germinação de C. acutatum. Em testes com flores destacadas

  6. Meio semi-seletivo para isolamento de Xanthomonas campestris pv. viticola

    OpenAIRE

    Peixoto Ana Rosa; Mariano Rosa de Lima Ramos; Viana Ivanise de Oliveira

    2006-01-01

    O cancro bacteriano causado por Xanthomonas campestris pv. viticola é a fitobacteriose mais importante da videira no Submédio São Francisco. O isolamento de X. campestris pv. viticola de tecidos vegetais infectados é dificultado pela presença de contaminantes bacterianos, entre os quais Microbacterium barkeri. Objetivando-se a formulação de meio de cultura semi-seletivo, 22 isolados de X. campestris pv. viticola foram testados com relação a 30 antibióticos. O meio semi-seletivo NYDAM (extrato...

  7. Meio semi-seletivo para isolamento de Xanthomonas campestris pv. viticola

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    Peixoto Ana Rosa

    2006-01-01

    Full Text Available O cancro bacteriano causado por Xanthomonas campestris pv. viticola é a fitobacteriose mais importante da videira no Submédio São Francisco. O isolamento de X. campestris pv. viticola de tecidos vegetais infectados é dificultado pela presença de contaminantes bacterianos, entre os quais Microbacterium barkeri. Objetivando-se a formulação de meio de cultura semi-seletivo, 22 isolados de X. campestris pv. viticola foram testados com relação a 30 antibióticos. O meio semi-seletivo NYDAM (extrato de carne 3, peptona 5, glicose 10, extrato de levedura 5, ágar 18 e ampicilina 0,1 em g L-1 inibiu M. barkeri e bactérias fitopatogênicas podendo ser utilizado para isolar X. campestris pv. viticola de hospedeiros com infecção natural em campo.

  8. AVALIAÇÃO DA DISPENSAÇÃO DE FÁRMACOS PARCIALMENTE SELETIVOS PARA COX-2

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    Cícero Cardoso VALLE FILHO

    2015-12-01

    Full Text Available Uma pesquisa foi realizada com o objetivo de avaliar um potencial aumento na venda de fármacos anti-inflamatórios não esteroidais (AINEs parcialmente seletivos para a COX-2 durante o período de julho de 2009 a junho de 2011, em uma drogaria localizada no município de Itaperuna, estado do Rio de Janeiro. Durante o período estudado foi dispensado um total de 802 AINEs parcialmente seletivos para a COX-2, dentre os quais 59,85% foram de nimesulida, 5,74% de etodolaco e 34,41% de meloxicam.   No primeiro semestre avaliado a dispensação total de AINEs parcialmente seletivos foi equivalente a 92, no segundo semestre a dispensação total foi equivalente a 159, no terceiro semestre a dispensação total foi de 219 AINEs parcialmente seletivos para COX-2 e no quarto semestre foram dispensados 332.  Os resultados indicaram maior dispensação dos medicamentos desta classe no mês de abril de 2011 sendo que tanto a nimesulida, quanto o meloxicam e o etodolaco foram mais dispensados no último semestre do estudo. De acordo com a metodologia utilizada pode-se concluir que a dispensação dos AINEs parcialmente seletivos vem crescendo a cada ano e que a nimesulida apresenta o maior índice de crescimento; a maior indicação da nimesulida tem sido para crianças; os meses correspondentes ao período de inverno apresentam maior dispensação de AINEs parcialmente seletivos para a COX-2.

  9. Los deportes alternativos en el deporte escolar

    OpenAIRE

    Herranz García, Adrián

    2013-01-01

    Este trabajo de fin de grado trata sobre una propuesta de intervención educativa, que tiene como principal objetivo, realizar una mejora dentro del deporte escolar, intentando fomentar una educación en valores, como el respeto, la igualdad y la no discriminación. A través de la práctica de deportes para todos y todas.En primer lugar, he realizado una revisión de los autores que conocen y escriben sobre el deporte, posteriormente sobre el deporte escolar, después sobre los deportes alternativo...

  10. Consumo en mercados alternativos para baja renta

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    Peñaloza, Verónica; Denegri Coria, Marianela; Lopes Ferreira de Souza, Lucas; Gerhard, Felipe

    2015-01-01

    Mediante la complementación entre una mirada cuantitativa y el rescate de los significados cualitativos, este trabajo pretende contribuir al conocimiento del consumidor de mercados alternativos. Un hallazgo importante es que la diversión crea un valor agregado importante en el momento de decidir el lugar donde se harán las compras. El comercio a pequeña escala, la atención personalizada y el cultivo del vínculo con el cliente son una enseñanza que se deriva de la observación de la realidad de...

  11. Las comparaciones interpersonales y la evaluación de estados sociales alternativos

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    Casas , Andrés Fernando

    2003-06-01

    Full Text Available Este ensayo revisa diferentes aproximaciones de la teoría económica para evaluar estados sociales alternativos, a partir de la formulación de una función de bienestar social que admita o niegue comparaciones interpersonales de utilidad. Analiza en especial los puntos de vista de la vieja y la nueva economía del bienestar. Y concluye que con los aportes de Amartya Sen al concepto de bienestar como funcionamiento y al de justicia como capacidad de elegir entre diversos funcionamientos, es posible considerar de manera distinta a los agentes y evaluar opciones alternativas de condiciones de vida.

  12. Rendimento dos meios seletivos para bactérias do gênero Fusobacterium

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    Wilson C. de Araújo

    1968-10-01

    Full Text Available Meios seletivos para Fusobacterium foram, comparados no aspecto de sua eficiência no isolamento dos microrganismos fusiformes e quanto à inibição da flora concomitante. Material não calcificado do sulco gengival foi homogeneizado e diluído em tampão de fosfato (0,067 M - pH 7,2; 0,1 ml foi semeado em agar sangue, no meio de Omata & Disraely, meio de Omata & Disraely sem sôro, meio de McMarthy & Snyder, agar sangue com vancomicina, meio de Onisi, meio de Onisi com sôro de cavalo e meio de Onisi com pH 7,0. Em todos os casos a incubação foi realizada em anaerobiose, em jarra tipo Brewer, com 95% nitrogênio e 5% gás carbônico, durante 4 dias. O meio de McCarthy & Snyder mostrou-se tão eficiente quanto o agar sangue em relação ao isolamento de Fusobacterium, ainda inibindo a flora concomitante, o meio de Omata & Disraely, com cristal violeta e estreptomicina, foi de certo modo inibidor também para Fusobacterium. O meio de Onisi, sugerido, sem sôro, possibilitou o isolamento de pequeno número de fusobactérias, provàvelmente as amostras não exigentes de proteínas naturais.

  13. SISTEMAS INMUNES ALTERNATIVOS Alternative Immune Systems

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    LUIS F. CADAVID

    Full Text Available El sistema inmune en animales es una red compleja de moléculas, células y tejidos que de manera conjunta mantienen la integridad fisiológica y genética de los organismos. Convencionalmente se ha considerado la existencia de dos clases de inmunidad, la innata y la adaptativa. La primera es ancestral, con variabilidad limitada y baja discriminación, mientras que la segunda es altamente variable, específica y restringida a vertebra-dos mandibulados. La inmunidad adaptativa se basa en receptores de antígeno que se rearreglan somáticamente para generar una diversidad casi ilimitada de moléculas. Este mecanismo de recombinación somática muy probablemente emergió como consecuencia de un evento de transferencia horizontal de transposones y transposasas bacterianas en el ancestro de los vertebrados mandibulados. El reciente descubrimiento en vertebrados no mandibulados e invertebrados de mecanismos alternativos de inmunidad adaptativa, sugiere que en el transcurso de la evolución distintos grupos animales han encontrado soluciones alternativas al problema del reconocimiento inmunológico.The immune system in animals is a complex network of molecules, cells and tissues that coordinately maintain the physiological and genetic integrity of the organism. Traditionally, two classes of immunity have been considered, the innate immunity and the adaptive immunity. The former is ancestral, with limited variability and low discrimination. The latter is highly variable, specific and limited to jawed vertebrates. Adaptive immunity is based on antigen receptors that rearrange somatically to generate a nearly unlimited diversity of molecules. Likely, this mechanism of somatic recombination arose as a consequence of horizontal transfer of transposons and transposases from bacterial genomes in the ancestor of jawed vertebrates. The recent discovery in jawless vertebrates and invertebrates of alternative adaptive immune mechanisms, suggests that during

  14. Género y turismo alternativo: aproximaciones al "empoderamiento"

    OpenAIRE

    Díaz Carrión, Isis Arlene

    2012-01-01

    El trabajo de investigación revisa los conceptos teóricos y empíricos del empoderamiento y el turismo alternativo como componentes vitales de un desarrollo rural sustentable interpretado desde los encuadres de género y geográfico. Los ejes rectores de la investigación se arman considerando la dinámica de cambios intrínseca del turismo alternativo, de la justicia social que subyace en el desarrollo rural, sí como de la búsqueda de nuevas identidades que generen hombres y mujeres con roles ...

  15. Mujeres y mercado de trabajo del turismo alternativo en Veracruz

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    Isis Arlene Díaz-Carrión

    2013-01-01

    Full Text Available Resultado de su compromiso con una sustentabilidad social, el turismo alternativo es considerado una actividad para potenciar cambios en la tradicional división del trabajo. En esta investigación cualitativa se revisa la participación de las mujeres en el turismo alternativo del estado de Veracruz y se visibilizan segregaciones ocupacionales y simultaneidad en la realización de trabajo productivo- reproductivo y de cuidados. El enfoque de género se muestra como una herramienta potencial para observar el trabajo productivo de las mujeres y promover el acceso al espacio público y sus recursos.

  16. Coeducar a través del juego motor alternativo

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    Dorado Olalla, Sergio

    2015-01-01

    Este trabajo de fin de grado, llevado a cabo en un centro educativo de Valladolid, procura analizar la coeducación en el aula a través de juegos motores alternativos. Para ello se elaboran cinco sesiones orientadas a identificar aquellas desigualdades que surgen en un aula a partir de juegos motores alternativos en el tercer ciclo de Educación Primaria y, a partir de ahí, proponer algunas estrategias para evitarlo. Los resultados del proceso de intervención puesto en práctica m...

  17. Filmes de polipirrol aplicados no desenvolvimento de eletrodos descartáveis seletivos a íons fluoreto

    OpenAIRE

    Alyne Cristina Lamy-Mendes; Eduardo Henrique Bindewald; Maurício Alberto Poletti Papi; Luiz Humberto Marcolino-Jr; Márcio Fernando Bergamini

    2014-01-01

    O presente manuscrito descreve o desenvolvimento de um sensor descartável sensível e seletivo baseado em filmes de polipirrol dopados (PPy) para determinação íons fluoreto. Os íons fluoretos foram incorporados na matriz PPy durante a polimerização eletroquímica realizada em condições galvanostáticas em um eletrodo compósito etileno vinil acetato e negro de fumo. Parâmetros experimentais envolvidos na preparação de película PPy tais como densidade de corrente elétrica, carga elétrica, o pH e a...

  18. Motores alternativos de combustión interna

    OpenAIRE

    Forns Farrús, Sergi

    2005-01-01

    Motores alternativos de combustión interna ha sido concebido para proporcionar al lector una visión general de las diferentes partes y subsistemas de los motores alternativos de combustión interna, tanto de aplicación a plantas de tracción motriz para vehículos como a plantas estacionarias para generación de energía eléctrica. Su objetivo básico es cubrir las necesidades bibliográficas para el seguimiento de las asignaturas Ingeniería y Máquinas Térmicas y Ampliación de Motores Térmicos, que ...

  19. Desbaste seletivo em povoamentos de Tectona grandis com diferentes idades Selective thinning in Tectona grandis plantations with different ages

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    Sidney Fernando Caldeira

    2008-01-01

    Full Text Available O efeito da intensidade do primeiro desbaste seletivo, após um ano, foi avaliado em dois povoamentos de teca sob espaçamento 3,0 x 3,0 m, e em duas diferentes idades. No povoamento com quatro anos de idade, o desbaste foi de 20%, 30% e 40%, em número de indivíduos, e no de cinco anos, de 30%, 40% e 50%, e as respectivas testemunhas (0%. Cada tratamento foi aplicado ao acaso, com oito repetições, contendo cada parcela 35 árvores, além da bordadura. Um ano após o desbaste aplicado no povoamento com quatro anos, as variáveis DAP, altura total (H e as médias por árvore de área transversal ( e de volume ( não apresentaram diferenças significativas entre os tratamentos; o incremento corrente anual (ICA V não foi afetado pelas intensidades. No povoamento desbastado aos cinco anos, o ICA V e H foram semelhantes em todos tratamentos. As intensidade de desbaste testadas não afetaram o crescimento em DAP, e , mas apresentaram diferenças significativas em relação à testemunha. O primeiro desbaste seletivo pode ser aplicado aos cinco anos de idade, em povoamentos de Tectona grandis com condições semelhantes, com qualquer das intensidades testadas.The intensity of the first selective thinning was evaluated in two plantations, 3.0 x 3.0 m. In the four year old plantation, the thinning was 20%, 30% and 40% in density and in the five year old, it was 30%, 40% and 50%, and the respective controls (0%. Each treatment was applied in eight random blocks of 35 trees, beyond the border. One year after thinning at the age of four, the DBH, total height (H, and average by tree of basal area ( and of volume ( presented no differences among the treatments; the current annual increment (CAIV was not affected by the intensities. In the plantation thinned at the age of five, the CAIV and H were similar in all treatments; the DBH, and were not affected by the tested intensities, but they were greater than the control. The first selective thinning may be

  20. Modelos alternativos de simulación Bootstrap

    OpenAIRE

    Pino Mejías, Rafael

    1992-01-01

    Se describen las características fundamentales de los métodos Bootstrap. Se analizan diversas problemáticas que presentan tales métodos, por lo que se presentan dos métodos alternativos dentro del método Bootstrap basado en la simulación de muestras (método II de Efron). En el primero se presenta un método, que a partir de un estudio de las propiedades algebraicas y estadísticas del conjunto de posibles muestras, utiliza un criterio probabilístico para detectar muestras "outliers". En el segu...

  1. Advisable alternative fuels for Mexico; Combustibles alternativos convenientes para Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Aguilar Gonzalez, Jorge Luis [ICA Fluor (Mexico)

    2007-07-15

    The alternative fuels are born with the goal of not damaging the environment; biodiesel, electricity, ethanol, hydrogen, methanol, natural gas, LP gas, are the main alternative fuels. However, the biodiesel and bioetanol are the only completely renewable ones, this makes them ideal to be developed in Mexico, since the agricultural sector could be fortified, the technological independence be favored, improve the conservation of the oil resources and by all means not to affect the environment. On the other hand, also efficient cultivation techniques should be developed to guarantee the economy of the process. [Spanish] Los combustibles alternativos nacen con la meta de no danar el medio ambiente; el biodiesel, electricidad, etanol, hidrogeno, metanol, gas natural, gas LP, son los principales combustibles alternativos. No obstante, el biodiesel y el bioetanol son los unicos completamente renovables, esto los hace ideales para desarrollarse en Mexico, ya que se podria fortalecer el sector agricola, favorecer la independencia tecnologica, mejorar la administracion de los recursos petroleros y por supuesto no afectar al medio ambiente. Por otro lado tambien se tendrian que desarrollar tecnicas de cultivo eficientes para garantizar la economia del proceso.

  2. Uso de solventes alternativos no âmbito das biorefinarias

    OpenAIRE

    Silva, Sara Patrícia Magalhães da

    2013-01-01

    O presente trabalho foi dedicado ao pré-tratamento de biomassa lenho-celulósica através de dois solventes alternativos – líquidos iónicos (LIs) e fluídos supercríticos (FSCs). O estudo com líquidos iónicos focou-se em propor uma nova metodologia para o pré-tratamento da palha de trigo com o líquido iónico acetato de 1-etil-3-metilimidazólio ([emim][OAc]), que permitiu o fracionamento da mesma em frações de celulose, hemicelulose e lenhina num simples processo de três etapas. Com este proce...

  3. Novo meio seletivo-indicador para detecção de Aeromonas e Plesiomonas: ágar UNISC New selective indicator medium for detection of Aeromonas and Plesiomonas: UNISC agar

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    Marion Pereira da Rocha

    2008-08-01

    Full Text Available Avaliou-se um novo meio seletivo-indicador (ágar UNISC para o isolamento de enteropatógenos clássicos e Aeromonas e Plesiomonas shigelloides. A capacidade de fermentação da xilose é indicada pela coloração amarela (fermentadores ou azul (não fermentadores que, aliada à prova da oxidase, constitui-se em indicador para a detecção de Aeromonas spp e Plesiomonas shigelloides. A produtividade e seletividade, avaliadas pelos índice de contagem absoluta e índice de contagem relativa indicam-no como uma alternativa aos coprocultivos clássicos porque permite, num só meio, o isolamento de Escherichia coli, Shigella spp, Salmonella spp, bem como, Aeromonas spp e Plesiomonas shigelloides, favorecendo o diagnóstico laboratorial das gastroenterites.We evaluated a new selective indicator medium (UNISC Agar for isolation of classical enteropathogens, Aeromonas spp and Plesiomonas shigelloides. The xylose fermentation capacity is indicated by a yellow color (fermenting agents or blue (no fermenting agent. This, together with the oxidase test, establishes it as an indicator for detecting Aeromonas and Plesiomonas shigelloides. Its productivity and selectivity, as assessed using the absolute count index and relative count index, indicate it as an alternative to the classical feces culturing media. This is because, in a single medium, it enables isolation of Escherichia coli, Shigella spp and Salmonella spp, in addition to Aeromonas and Plesiomonas shigelloides, thereby favoring the laboratory diagnosis of gastroenteritis.

  4. Estudio del funcionamiento de motores alternativos de combustión interna mediante la utilización de combustibles alternativos

    OpenAIRE

    Perancho Janer, David

    2007-01-01

    En este proyecto se analizan los motores alternativos de combustión interna cuando son accionados mediante combustibles no usados comúnmente en automoción y que se presentan como alternativa a los actuales por sus beneficios medioambientales y su capacidad de explotación a largo plazo. El proyecto analiza cinco combustibles alternativos: el biodiesel, etanol, dimetil-éter, metano e hidrógeno como sustitutivos de la gasolina o el gasóleo. En primer lugar se describen las prop...

  5. Detecção de Xanthomonas axonopodis pv. phaseoli em sementes de feijão em meio de cultura semi seletivo Detection of Xanthomonas axonopodis pv. phaseoli in seeds of common bean on semi-selective medium

    OpenAIRE

    Nilvanira D. Tebaldi; Ricardo M. de Souza; José C. Machado

    2007-01-01

    Para a detecção de Xanthomonas axonopodis pv. phaseoli (Xap) em extratos de sementes inteiras e moídas de feijão, naturalmente contaminadas e sadias foram utilizados os meio de cultura semi-seletivos XCP1 e MT e o não seletivo 523 de Kado & Hesket. Os extratos de sementes foram também inoculados em folhas primárias de feijoeiro. O meio de cultura semi-seletivo XCP1 foi o mais eficiente na quantificação e detecção de Xap em extratos de sementes inteiras de feijão. Os extratos de sementes conta...

  6. Sistemas sanitarios alternativos para la ciudad de Tijuana, Baja California

    Directory of Open Access Journals (Sweden)

    Alberto Pombo

    2004-01-01

    Full Text Available En la ciudad de Tijuana, el tiempo promedio entre el asentamiento en las colonias periurbanas y la obtención del servicio de drenaje sanitario es de 14 años. Para mitigar esta problemática social proponemos una secuencia temporal y espacial de cuatro sistemas sanitarios alternativos para las áreas urbanas y periurbanas con población de menores ingresos y que carecen de acceso a la red de drenaje municipal. Nuestra propuesta incluye letrinas de pozo ventilado, fosas sépticas, excusado de bajo volumen de agua y sistema de drenaje simplificado, todos de bajo consumo de agua. Esta propuesta considera la construcción de un sistema sanitario básico de bajo costo e impacto, modificable a medida que se cuente con mejores ingresos. Con base en un análisis espacial de la distribución de servicios, se propone la localización de los distintos sistemas sanitarios a partir de la disponibilidad o carencia de agua entubada, así como ubicación y cercanía a la red de drenaje municipal.

  7. Glyphosate em mistura com herbicidas alternativos para o manejo de plantas daninhas Glyphosate combined with alternative herbicides for vegetation management

    Directory of Open Access Journals (Sweden)

    P.A. Monquero

    2001-12-01

    Full Text Available O uso intensivo de glyphosate como herbicida não-seletivo tem selecionado espécies de plantas daninhas tolerantes. Dessa forma, é importante que sejam estudadas misturas de tanque com herbicidas de mecanismos de ação alternativos e que apresentem efeitos sinergísticos ou aditivos. Por essa razão, foi instalado um experimento inteiramente casualizado, composto por 13 tratamentos e 4 repetições, em casa de vegetação da Universidade de São Paulo - ESALQ/USP, Piracicaba-SP, com as plantas daninhas Richardia brasiliensis, Commelina benghalensis, Amaranthus hybridus, Galinsoga parviflora e Ipomoea grandifolia em misturas de tanque dos herbicidas chlorimuron-ethyl, sulfentrazone, carfentrazone, bentazon ou flumioxazin com glyphosate. As interações foram aditivas para as plantas daninhas I. grandifolia e C. benghalensis, e os herbicidas flumioxazin, sulfentrazone e carfentrazone aplicados isoladamente e em mistura com glyphosate foram os que proporcionaram os melhores níveis de controle. A interação de glyphosate com sulfentrazone foi antagônica em R. brasiliensis; a mistura de glyphosate com os demais herbicidas estudados foi aditiva, sendo os tratamentos com mistura de glyphosate e chlorimuron-ethyl ou flumioxazin os mais eficazes. Em A. hybridus, os tratamentos que apresentaram melhores níveis de controle foram o glyphosate e carfentrazone, aplicados isoladamente, e a mistura de glyphosate com flumioxazin, sulfentrazone, chlorimuron-ethyl e bentazon, sendo estes interações aditivas. No caso de G. parviflora, os tratamentos com flumioxazin e sulfentrazone apresentaram controle total, o mesmo acontecendo com as misturas de glyphosate com carfentrazone, flumioxazin, sulfentrazone, chlorimuron-ethyl ou bentazon.The intensive use of glyphosate as a non-selective herbicide for weed vegetation management has selected some tolerant weed species. Thus, it is important to study the synergistic or antagonic or additive effects of tank

  8. Riscos e benefícios dos anti-inflamatórios não esteróides inibidores seletivos da ciclo-oxigenase 2

    OpenAIRE

    Tavares, Tânia Isabel Almeida

    2012-01-01

    Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Ciências Farmacêuticas. Os anti-inflamatórios não esteróides inibidores seletivos da ciclo-oxigenase-2 (Coxibes) são fármacos utilizados no tratamento da dor e inflamação crónica, principalmente em patologias de origem musculoesquelética, como a artrite reumatóide, osteoartrose e espondilite anquilosante. Os Coxibes têm como objetivo a inibição seleti...

  9. Un acercamiento a lo alternativo en la educación física escolar

    OpenAIRE

    Burga, Miriam

    2013-01-01

    El artículo que presento es uno de los textos que constituyen el Módulo Didáctico denominado Juegos y Deportes Alternativos/Revista de Formación Nº 1, Obra registrada en la Dirección Nacional del Derecho de Autor, Expediente nº 5034439 en Agosto de 2012. El módulo se elaboró como documento de apoyo y fuente bibliográfica para los participantes de las capacitaciones en juegos y deportes alternativos que veníamos dictando junto a la profesora Sandra Emanuel desde 2009, en varias ciudades de la ...

  10. Algoritmos alternativos para la enseñanza de operaciones en educación primaria

    OpenAIRE

    Ereño-Arrizabalaga, Ane

    2014-01-01

    El área de matemáticas siempre ha sido algo controvertida y en ocasiones abstracta para los alumnos. A través de este trabajo se pretende realizar una aproximación a un apartado de las matemáticas muy investigado como son los algoritmos alternativos existentes, tanto los denominados históricos como los alternativos empleados actualmente, para poder ver sus características y la idoneidad de su aplicación en la educación primaria, frente a los algoritmos tradicionales que actualmente se usan y ...

  11. Selective cyclooxygenase-2 inhibition prevents bone resorption Inibidor seletivo de cicloxigenase-2 prevenindo reabsorção óssea

    Directory of Open Access Journals (Sweden)

    Carlos Augusto Nassar

    2005-03-01

    Full Text Available The aim of the present work was to evaluate the effect of a selective cyclooxygenase-2 (COX-2 inhibitor (meloxicam on the alveolar bone loss progression in experimentally induced periodontitis. Forty (40 Wistar rats were separated into 8 experimental groups (n = 5. Cotton ligatures were placed at the gingival margin level of the lower right first molars of some rats. Four groups were treated for 5 or 15 days with an oral dose of 15 mg/kg of body weight/day of the selective COX-2 inhibitor. The other groups were used as positive control (sham or negative control in each experimental period. Standardized digital radiographs were taken after sacrifice at 5 and 15 days to measure the amount of bone loss at the mesial root surface of the first molar tooth in each rat. The treatment with meloxicam did not induce weight alteration or other visible systemic manifestations. One way analysis of variance (ANOVA indicated that groups treated with meloxicam, after 5 days, had significantly less alveolar bone loss (p O objetivo deste trabalho foi avaliar o efeito de um inibidor seletivo da cicloxigenase-2 (COX-2 (meloxicam na progressão da perda óssea alveolar durante o desenvolvimento da doença periodontal experimental induzida. Quarenta (40 ratos Wistar foram separados em 8 grupos experimentais (n = 5. Ligaduras de fio de algodão foram colocadas na margem gengival do primeiro molar inferior direito de alguns ratos. Quatro grupos foram tratados por 5 ou 15 dias com uma dose oral de 15 mg/kg de peso corporal/dia do inibidor seletivo de COX-2. Os outros grupos foram usados como controle positivo (sham e controle negativo dentro de cada período experimental. Radiografias digitais padronizadas foram realizadas para medir a perda óssea na região mesial do primeiro molar inferior de cada rato. O efeito do tratamento com meloxicam não induziu alteração de peso ou outras manifestações sistêmicas visíveis. A Análise de Variância (ANOVA indicou que os

  12. Medios alternativos de resolución de conflictos en derecho administrativo

    OpenAIRE

    Olmo Alonso, Jesús del

    2004-01-01

    Premio de la Sociedad de Condueños 2006 El presente trabajo aborda fundamentalmente el estudio de mecanismos complementarios al sistema judicial para solucionar conflictos en Derecho Administrativo, y, especialmente, en las relaciones ciudadanos- Administración. Aunque, existe también un análisis de las vías para prevenir litigios administrativos, el autor se centra en un estudio de los distintos mecanismos alternativos que contribuyen a resolver definitivamente las controversias administr...

  13. El Mercado Alternativo Bursátil: una novedosa oportunidad para las empresas familiares

    OpenAIRE

    Duréndez Gómez Guillamón, Antonio Luis; García Pérez De Lema, Domingo; Mariño Garrido, Teresa

    2014-01-01

    Con la entrada en funcionamiento del Mercado Alternativo Bursátil en España, las empresas familiares de menor capitalización tienen la posibilidad de cotizar en un mercado bursátil diseñado para pymes. Actualmente, con una profunda crisis de origen financiero, el MAB gana una especial relevancia como estrategia alternativa para conseguir financiación y así superar la fuerte restricción en el acceso al crédito bancario. No obstante, las empresas familiares no se podrán ben...

  14. Máquina de Aspectos: un enfoque alternativo para la implementación de aspectos.

    OpenAIRE

    Gesto, Esteban; Hallar, Karim; Casas, Sandra

    2006-01-01

    La Programación Orientada a Aspectos (POA) es un nuevo paradigma de programación que propone mecanismos para soportar la separación de los aspectos no funcionales de los sistemas software. Una herramienta POA consiste en tres componentes principales: un lenguaje de programación base, un lenguaje de programación orientado a aspectos y un tejedor de aspectos (weaver). El presente trabajo propone un enfoque alternativo para la implementación de aspectos basado en la especificación de los mism...

  15. Hospedeiros alternativos de Xanthomonas campestris pv. viticola Alternative hosts of Xanthomonas campestris pv. viticola

    OpenAIRE

    Ana Rosa Peixoto; Rosa L.R. Mariano; José Osmã T. Moreira; Ivanise O. Viana

    2007-01-01

    Xanthomonas campestris pv. viticola (Xcv), que causa o cancro bacteriano da videira, sobrevive em plantas infectadas, epifiticamente em órgãos da parte aérea e pode ser veiculada em mudas e/ou bacelos infectados. O trabalho teve como objetivo investigar possíveis hospedeiros alternativos do patógeno, visando fornecer subsídios para o manejo da doença. A partir das plantas invasoras Alternanthera tenella, Amaranthus sp., Glycine sp. e Senna obtusifolia com sintomas similares aos do cancro bact...

  16. LA ZARZAMORA (RUBUS SP.), CULTIVO ALTERNATIVO PARA EL ESTADO DE SONORA

    OpenAIRE

    Moller, Amparo del Carmen Meza; Figueroa, María Gabriela Romo; Ochoa, Víctor René Duarte; Aguilar, Ramón Navarro

    2013-01-01

    Sonora se ha caracterizado por ser uno de los principales estados reconocidos internacionalmente por su producción en melón, calabaza, sandía, uva de mesa, nuez. Dada la ubicación geográfica y la existencia de microclimas se han evaluado cultivos alternativos de alto valor comercial para promover la diversificación de especies. A partir de un proyecto financiado por Fundación Produce Sonora, se estableció en el campo de CESUES en la zona agrícola de Estación Pesqueira, una parcela experimenta...

  17. Feed-water heaters alternative design comparison; Comparacion de disenos alternativos de calentadores

    Energy Technology Data Exchange (ETDEWEB)

    Torres Toledano, Gerardo [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1988-12-31

    A procedure is presented for the alternative design comparison of feed water heaters, based in the failure records of damaged tubes during operation. The procedure is used for cases in which non-continuous or random inspections are made to the feed-water heaters. [Espanol] Se presenta un procedimiento para comparar disenos alternativos de calentadores, basandose en los registros de fallas de los tubos rotos acumuladas durante su operacion. El procedimiento se emplea para casos en los que se realizan inspecciones a los calentadores no continuas, ya sea periodicas o al azar.

  18. Biogás como combustible alternativo en automoción

    OpenAIRE

    Vàzquez Díaz, José Ángel

    2013-01-01

    Actualmente muchas investigaciones se centran en la búsqueda de combustibles alternativos para cumplir con las necesidades de transporte y reducir el impacto ambiental en automoción. El uso de combustibles gaseosos en el sector del transporte es una opción prometedora además de promover la diversificación energética. Los combustibles se clasifican en función de las propiedades de los mismos, centrándose este trabajo en el estudio del biogás, sus aplicaciones, las infraestructuras de almacenam...

  19. Proyecto alternativo de remodelación del Testero del Muelle de Ergransa, Barcelona.

    OpenAIRE

    García Díez, Alejandro

    2011-01-01

    Este trabajo va a consistir en plantear un proyecto alternativo a la reforma que se llevó a cabo en el muelle testero de Ergransa en el Puerto de Barcelona. Primero explicaré en que consistió esta renovación y como se desarrolló su proceso constructivo. El proyecto se ideó con el fin de reparar un muelle testero del Puerto de Barcelona fuertemente deteriorado, debido a su construcción hace ya casi un siglo y su uso constante durante las últimas décadas, por encontrarse en una zona de gran act...

  20. Controle e progresso temporal da ferrugem asiática da soja sob controle alternativo em campo

    OpenAIRE

    R.M. Mesquini; K.R.F. Schwan-Estrada; R.A. Vieira; J.F. Nascimento

    2011-01-01

    O objetivo deste trabalho foi avaliar o controle e o progresso temporal da ferrugem asiática da soja, causada por Phakopsora pachyrhizi, sob manejo com tratamentos alternativos. Para isso, implementou-se um ensaio em delineamento de blocos completos com tratamentos ao acaso, com 4 repetições, em Itambé-PR, durante a safra 2007/2008. Os tratamentos alternativos foram: biomassa cítrica, extrato bruto e óleo essencial de Eucalyptus citriodora e grãos de kefir. Avaliou-se também o controle químic...

  1. Los métodos alternativos: un reto para las administraciones y para los científicos

    OpenAIRE

    León, P.; O Dignoes

    2014-01-01

    La normativa actual que regula en el ámbito europeo la utilización de los animales con fines científicos establece con absoluta rotundidad que su prioridad absoluta es el fomento y la implantación de los enfoques alternativos a los métodos tradicionales de utilización de los animales. Insistimos sobre dos aspectos que consideramos relevantes. En primer lugar es necesario aclarar que los métodos alternativos no son solo aquellos en los que se alcanza el Reemplazo total de los animales, sino qu...

  2. Farmacogenética de inibidores seletivos de recaptação de serotonina: uma revisão Pharmacogenetics of selective serotonine reuptake inhibitors: a review

    Directory of Open Access Journals (Sweden)

    Diana Klanovicz Silva

    2008-01-01

    Full Text Available A variabilidade da resposta aos medicamentos se deve em grande parte a fatores genéticos, e essa variabilidade afeta os efeitos terapêuticos e as reações adversas, de forma que a mesma dose de um medicamento pode ser benéfica para um paciente mas ineficaz para outro. Os fármacos conhecidos como inibidores seletivos de recaptação de serotonina (ISRSs pertencem a uma classe de medicamentos utilizados para o tratamento de uma série de patologias relacionadas com a serotonina, especialmente a depressão. O objetivo deste trabalho é reunir os dados presentes na literatura sobre a associação de genes candidatos com a resposta a ISRSs, fornecendo assim um panorama sobre o estado atual de conhecimento sobre o assunto. A resposta ao tratamento com ISRSs depende da variabilidade de genes codificantes de proteínas envolvidas com o papel da serotonina no cérebro. Com os avanços conquistados a partir do Projeto Genoma Humano, foi possível detectar essas variações, e várias delas mostraram ter importância farmacogenética. Portanto, alguns dos genes relacionados à farmacogenética dos ISRSs já são conhecidos, o que torna clara a necessidade de maiores investigações prospectivas para determinar a real utilidade desse conhecimento na prática clínica, com relação à possibilidade da determinação da dose adequada do fármaco correto para cada paciente, prática que vem sendo denominada de "medicina personalizada".A large proportion of the variability in drug response is due to genetic factors, and this variability affects therapeutic effects and adverse reactions, so that the same dosage of a drug can be beneficial to some patients, but ineffective to others. The drugs known as selective serotonin reuptake inhibitors (SSRI belong to a pharmacological class used in the management of a number of diseases related to serotonin, especially depression. The aim of this paper is to collect data from the literature about the association of

  3. Bloqueio seletivo dos nervos supraescapular e axilar promove analgesia satisfatória e menor grau de bloqueio motor: comparação com o bloqueio interescalênico

    Directory of Open Access Journals (Sweden)

    Patrícia Falcão Pitombo

    2013-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVO: Cirurgias artroscópicas do ombro cursam com intensa dor pós-operatória. Diversas técnicas analgésicas têm sido preconizadas. O objetivo deste estudo foi comparar o bloqueio dos nervos supraescapular e axilar nas cirurgias artroscópicas de ombro com a abordagem interescalênica do plexo braquial. MÉTODO: Sessenta e oito pacientes foram alocados em dois grupos de 34, de acordo com a técnica utilizada: grupo interescalênico (GI e grupo seletivo (GS, sendo ambas as abordagens realizadas com neuroestimulador. No GI, após resposta motora adequada foram injetados 30 mL de levopubivacaína em excesso enantiomérico de 50% a 0,33% com adrenalina 1:200.000. No GS, após resposta motora do nervo supraescapular e axilar, foram injetados 15 mL da mesma substância em cada nervo. Em seguida, realizada anestesia geral. Variáveis avaliadas: tempo para realização dos bloqueios, analgesia, consumo de opioide, bloqueio motor, estabilidade cardiocirculatória, satisfação e aceitabilidade pelo paciente. RESULTADOS: Tempo para execução do bloqueio interescalênico foi significativamente menor que para realização do bloqueio seletivo. Analgesia foi significativamente maior no pós-operatório imediato no GI e no pós-operatório tardio no GS. Consumo de morfina foi significativamente maior na primeira hora no GS. Bloqueio motor foi significativamente menor no GS. Estabilidade cardiocirculatória, satisfação e aceitabilidade da técnica pelo paciente não diferiram entre os grupos. Ocorreu uma falha no GI e duas no GS. CONCLUSÕES: Ambas as técnicas são seguras, eficazes com mesmo grau de satisfação e aceitabilidade. O bloqueio seletivo de ambos os nervos apresentou analgesia satisfatória, com a vantagem de proporcionar bloqueio motor restrito ao ombro.

  4. Cuidados alternativos en la atención del embarazo en Jalisco, México

    OpenAIRE

    Isabel Valadez; Noe Alfaro; Elizabeth Pozos

    2003-01-01

    En la atención prenatal se ha identificado la cultura de la madre como factor que influye en la utilización de los servicios de salud. Las creencias y prácticas de medicina tradicional y doméstica que realiza la mujer durante el embarazo pueden intervenir en la decisión de acudir a la atención médica. En una muestra no probabilística de 3.250 mujeres se identificaron los cuidados alternativos de atención al embarazo y se estableció su relación con un control prenatal satisfactorio. Para el an...

  5. Cuidados alternativos en la atención del embarazo en Jalisco, México

    Directory of Open Access Journals (Sweden)

    Isabel Valadez

    2003-10-01

    Full Text Available En la atención prenatal se ha identificado la cultura de la madre como factor que influye en la utilización de los servicios de salud. Las creencias y prácticas de medicina tradicional y doméstica que realiza la mujer durante el embarazo pueden intervenir en la decisión de acudir a la atención médica. En una muestra no probabilística de 3.250 mujeres se identificaron los cuidados alternativos de atención al embarazo y se estableció su relación con un control prenatal satisfactorio. Para el análisis de asociación se dividió la variable de atención prenatal en (a satisfactoria y (b no satisfactoria de acuerdo a la Norma Oficial Mexicana. Se empleó la prueba de chi², el odds ratio y sus intervalos de confianza. Los cuidados alternativos resultaron asociados a una atención prenatal no satisfactoria. El entrenamiento psicoprofiláctico se comportó como factor protector. La cultura de la gestante es una configuración de significados y comportamientos, con mezcla de concepciones y prescripciones de la medicina doméstica, tradicional y académica, que varían según la etapa del embarazo, que pueden ser únicas o complementarias. Esta situación debe considerarse en los programas educativos en salud.

  6. Cuidados alternativos en la atención del embarazo en Jalisco, México

    Directory of Open Access Journals (Sweden)

    Valadez Isabel

    2003-01-01

    Full Text Available En la atención prenatal se ha identificado la cultura de la madre como factor que influye en la utilización de los servicios de salud. Las creencias y prácticas de medicina tradicional y doméstica que realiza la mujer durante el embarazo pueden intervenir en la decisión de acudir a la atención médica. En una muestra no probabilística de 3.250 mujeres se identificaron los cuidados alternativos de atención al embarazo y se estableció su relación con un control prenatal satisfactorio. Para el análisis de asociación se dividió la variable de atención prenatal en (a satisfactoria y (b no satisfactoria de acuerdo a la Norma Oficial Mexicana. Se empleó la prueba de chi², el odds ratio y sus intervalos de confianza. Los cuidados alternativos resultaron asociados a una atención prenatal no satisfactoria. El entrenamiento psicoprofiláctico se comportó como factor protector. La cultura de la gestante es una configuración de significados y comportamientos, con mezcla de concepciones y prescripciones de la medicina doméstica, tradicional y académica, que varían según la etapa del embarazo, que pueden ser únicas o complementarias. Esta situación debe considerarse en los programas educativos en salud.

  7. Controle e progresso temporal da ferrugem asiática da soja sob controle alternativo em campo

    Directory of Open Access Journals (Sweden)

    R.M. Mesquini

    2011-03-01

    Full Text Available O objetivo deste trabalho foi avaliar o controle e o progresso temporal da ferrugem asiática da soja, causada por Phakopsora pachyrhizi, sob manejo com tratamentos alternativos. Para isso, implementou-se um ensaio em delineamento de blocos completos com tratamentos ao acaso, com 4 repetições, em Itambé-PR, durante a safra 2007/2008. Os tratamentos alternativos foram: biomassa cítrica, extrato bruto e óleo essencial de Eucalyptus citriodora e grãos de kefir. Avaliou-se também o controle químico com azoxistrobina + ciproconazole + adjuvante 0,5 v/v e a testemunha. Para comparação dos tratamentos utilizou-se a severidade da doença (em cinco avaliações, a área abaixo da curva de progresso da doença (AACPD, a taxa de progresso da doença, a produtividade e o peso de mil grãos. Foram constatadas diferenças significativas (Pd"0,05 para as avaliações de severidade, para AACPD e para a taxa de progresso da doença. De modo geral, dentre os tratamentos alternativos, a biomassa cítrica e os grãos de kefir apresentaram os maiores índices de controle e menores taxas de progresso da doença, superando os tratamentos com extrato bruto e óleo essencial de E. citriodora. Porém, o tratamento com azoxistrobina + ciproconazole foi mais eficiente para controle e proporcionou as menores taxas de progresso quando comparado aos tratamentos alternativos.

  8. El rol del transporte público alternativo motorizado en la ciudad / The role of motorized paratransit in the city

    Directory of Open Access Journals (Sweden)

    Rosa Isabel Amorós Zurita

    2013-01-01

    Full Text Available ResumenEl trabajo de investigación presenta una aproximación global sobre las diversas pautas de comportamiento del transporte público alternativo. Es decir, se pretende, a través de la realización de una investigación meramente descriptiva, identificar las diferentes características físicas y de operación de este tipo de transporte en la ciudad. Su estructura incluye el análisis de conceptos y clasificaciones relacionados al transporte público alternativo, la presentación de dos experiencias distintas sobre la utilización de la motocicleta a tres ruedas, uno de los principales tipos de transporte público alternativo motorizado, y finalmente los principales efectos positivos y negativos que causa su circulación a nivel urbano, ambiental, social y económico. Los resultados obtenidos permiten a las instituciones relacionadas con el transporte reflexionar sobre la posibilidad fortalecer esta propuesta de movilidad, necesaria especialmente en países en vías de desarrollo.Palabras claveTransporte público alternativo, ciudad, movilidad.AbstractThis research work presents a new global approach on various paratransit’s behavior patterns in the city. That is to say, through a descriptive research, to allow identifying the physical and operational characteristics of motorized paratransit in the city. The research structure includes the analysis of paratransit’s concepts and classifications, the exposure of two different experiences based on the three-wheeled motorcycle use, one of the main motorized paratransit’s types, and finally its main positive and negative effects in an urban, environmental, social and economic level. The results that were obtained allow transport institutions to reflect on the possibility of strengthen this mobility proposal, required especially in developing countries.KeywordsParatransit, city, mobility.

  9. Los métodos alternativos en el estudio de la seguridad de cosméticos.

    Directory of Open Access Journals (Sweden)

    J de Lapuente

    2014-01-01

    Full Text Available El Reglamento 1223/2009 establece las normas que deben cumplir todos los productos cosméticos comercializados en Europa, con objeto de velar por el funcionamiento del mercado interior y lograr un elevado nivel de protección de la salud humana garantizando el uso de métodos alternativos que no impliquen la utilización de animales. El Laboratorio Europeo de Referencia para las Alternativas a la Experimentación con Animales (EURL-EURLECVAM es el laboratorio de referencia en Europa encargado de validar los métodos alternativos. Posteriormente pueden ser homologados por la Organización de Cooperación y Desarrollo Económico (OCDE. Por otro lado, el Comité Científico de Seguridad de los Consumidores (SCCS asesora a la Comisión sobre todos los temas relacionados con la seguridad de los cosméticos. En esta revisión se detalla una relación de métodos alternativos necesarios para evaluar la seguridad de los ingredientes cosméticos así como los métodos usados y sus limitaciones.

  10. Desempenho agronômico de maracujazeiros tratados com produtos alternativos e fertilizantes foliares

    Directory of Open Access Journals (Sweden)

    Keize Pereira Junqueira

    2011-03-01

    Full Text Available A resistência induzida é um método alternativo de controle de doenças. Entretanto, há poucos estudos relacionando o uso destes produtos e outros métodos alternativos à produtividade das plantas e às características físicas e químicas dos frutos. Objetivou-se avaliar a severidade de doenças, as características físicas e químicas de frutos e a produtividade de plantas tratadas com produtos alternativos e fertilizantes foliares. Plantas de maracujazeiro BRS Gigante Amarelo clonadas, em campo, foram submetidas, por um ano, a pulverizações quinzenais com: água (testemunha, Cuprozeb® (fungicida-padrão, acibenzolar-S-metil - ASM, Agro-mos®, fosfito de potássio, fosetyl-Al, gesso agrícola e CPAC-GE (produto em teste. O delineamento foi o em blocos casualizados, com quatro repetições e 20 frutos por repetição. Para o estudo da produtividade, utilizaram-se quatro repetições e seis plantas úteis por parcela. As colheitas ocorreram de novembro/2008 a abril/2009. As severidades foram avaliadas com escala de notas. Houve redução da severidade da virose, verrugose e bacteriose em todos os tratamentos, com exceção do Cuprozeb® para virose. Não foi observada redução da antracnose. Frutos com maior massa fresca foram obtidos com aplicações de gesso agrícola (236,83 g, CPAC-GE (234,10 g, fosetyl-Al ( 233,79 g, fosfito de potássio (230,64 g e Agro-mos® (221,15 g. Os mesmos resultados foram observados para diâmetro transversal e massa de polpa. Não houve diferenças significativas entre tratamentos para diâmetro longitudinal e espessura de casca. Quanto às características químicas dos frutos, com exceção do Cuprozeb®, que não diferiu significativamente da testemunha, todos os produtos proporcionaram incremento no teor de sólidos solúveis. Maior acidez titulável foi obtida com Cuprozeb®, gesso agrícola, Agro-mos®, fosetyl-Al e ASM. Não foi constatada alteração no pH dos frutos. Em relação

  11. Posmodernidad y Sistemas Alternativos de Administración de Justicia

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    Eugenia Harris Bravo

    2007-09-01

    Full Text Available En los sistemas políticos democráticos actuales surgen demandas y conflictos en el seno de la sociedad, que no pueden ser ignorados por los órganos que ejercen el poder político dentro del Estado, pero que requieren la participación directa de los ciudadanos para su resolución. En el presente trabajo se abordan las prácticas extrajudiciales y extraestatales de resolución de conflictos, particularmente las consagradas constitucional y legislativamente. Se explica cómo debemos a la posmodernidad y a los sistemas alternativos de Administración de Justicia el reconocimiento de esa habilitación otorgada a los actores sociales para que resuelvan sus problemas sin la intervención de los órganos estatales y se realiza un cotejo entre los postulados de la nueva tendencia y los aspectos consagrados en la Ley Orgánica de Justicia de Paz.

  12. Un método alternativo para fijar drenajes An alternative way to secure drains

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    F. Solesio Pilarte

    2009-09-01

    Full Text Available La colocación de drenajes en las intervenciones quirúrgicas es una práctica muy habitual en la mayoría de las operaciones de Cirugía Plástica y también de otras especialidades, pero en ocasiones su objetivo fracasa al deslizarse el drenaje. Diversos autores han propuesto varios métodos de sujeción de los drenajes a la piel con distinto grado de aceptación. El más empleado es el método de "sandalia romana" que, si no se realiza correctamente resulta ineficaz. En el presente artículo analizamos dónde y por qué falla frecuentemente dicho método y proponemos un procedimiento alternativo, sencillo y seguro para la fijación de drenajes quirúrgicos, el uso del ballestrinque.Using drains in Plastic Surgery and other specialties is a very common practice. Sometimes the procedure fails when drains slide. Several securing methods have been reported in literature by authors with different grades of acceptance. The most commonly used one is the "roman sandal tying up", which results useless if not done correctly. For this reason we decided to analyze where and why such a method fails and propose an alternative, easy and trustable method to secure surgical drains: the clove hitch knot.

  13. Modos de vida alternativos: o caso da comunidade Noiva do Cordeiro

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    Adilson Schultz

    2011-04-01

    Full Text Available Noiva do cordeiro é uma comunidade rural liderada por mulheres, que desenvolveu um modo de vida alternativo e sustentável, com partilha de bens e fim da religião institucionalizada. Forjado ao longo de mais de um século, num processo de constantes rupturas religiosas, familiares e ideológicas, esse inusitado modo de vida produziu uma comunidade autônoma, com sujeitos autônomos e responsáveis uns pelos outros, que se tornaram lideranças sociais e políticas. No centro de sua história, experiências de sofrimento e rupturas relacionadas à religião, à fome, e à estrutura familiar patriarcal. O estudo do caso de Noiva do Cordeiro tem a intenção de analisar elementos subjetivos deste processo, verificando os indicativos e as implicações de tal fenômeno religioso e social, especialmente os limites e o fim de determinado modelo de religião. Os pressupostos teóricos deste estudo apontam para uma perspectiva transdisciplinar que compreende a teologia, a sociologia e a psicologia da religião e, nestes campos, as teorias feministas.

  14. A criocirurgia como tratamento alternativo do xerodema pigmentoso = The criosurgery as alternative treatment of xeroderma pigmentosum

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    Antunes, Antonio Azoubel

    2007-01-01

    Full Text Available A criocirurgia consiste em tratar lesões patológicas da pele e mucosas pelo congelamento intenso da área afetada. Sua indicação deve obedecer a critérios de avaliação, como o aspecto macroscópico da lesão, tamanho, tipo histológico, localização e idade do paciente, sendo indicado para o tratamento das lesões provenientes do Xeroderma Pigmentoso (XP. O objetivo do presente estudo é instituir a experiência dos autores quanto ao uso da criocirurgia no tratamento de 12 pacientes com lesões em pele e mucosa da região da cabeça e pescoço associadas ao XP, em um período de 25 anos, discutindo suas aplicações e aspectos de sucesso e insucesso. Durante o período de abril de 1977 a abril de 2002 (25 anos, foram tratados pela criocirurgia, no Centro de Oncologia (CEON do Hospital Universitário Oswaldo Cruz (HUOC – Universidade de Pernambuco (UPE, Departamento de Cabeça e Pescoço – Hospital de Câncer de Pernambuco e na clínica privada de um dos autores, 1900 (mil e novecentos casos de pacientes portadores de lesões benignas e malignas da pele e mucosa na região de cabeça e pescoço, dos quais 12 pacientes (0,7% eram portadores de XP. Do total da amostra, 66,6% eram do sexo masculino e todos os casos ocorreram na 1ª e 2ª décadas de vida. A criocirurgia constitui-se um excelente método alternativo de tratamento para as lesões de pele e mucosa decorrentes do XP, sempre que indicada de maneira criteriosa

  15. Citibikes de Colombia. La bicicleta publica: sistema alternativo de transporte para Santafe de Bogota

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    Javier Enrique Ramos

    2000-12-01

    Full Text Available EI objetivo del presente artículo es presentar una nueva propuesta en materia de transporte urbano, teniendo en cuenta el cada vez más restringido uso del automóvil particular y la ineficiencia de los actuales médicos de transporte público. En la primera parte del trabajo se presenta un panorama general de la importancia de los sistemas de transporte en las ciudades y cómo afectan la vida de sus habitantes. También se muestra la situación actual del transite en Bogotá y la necesidad de implantar sistemas alternativos de transporte. En la segunda parte, se propone el diseño de un sistema en línea de alquiler de bicicletas denominado Bicicleta Publica, que sea parte integral del Sistema integrado de transporte para Santafé de Bogotá. Para cumplir con este propósito se presentan los lineamientos generales mediante un plan de negocios, que conduzca a la creación de una empresa que administre el sistema y los servicios conexos. EI plan de negocios pretende cubrir la mayor parte de la ciudad, ubicando estaciones de bicicleta publica en diferentes lugares, principalmente en las áreas de influencia de las universidades, parques, centros comerciales y, en un futuro, en las estaciones de Transmilenio y el Metro. Esto le brinda al usuario la posibilidad de tomar una bicicleta en un punto determinado y retornarla en otra estación diferente a donde la alquiló inicialmente. Las ventajas de este mecanismo son apreciables, ya que no representa complicación alguna para el usuario debido a que puede usar la bicicleta el tiempo deseado sin preocuparse por aspectos tales como el estacionamiento, el clima o las diferentes actividades, para lo cual la bicicleta propia sería un completo inconveniente.

  16. Turismo Alternativo y Educación. Una propuesta para contribuir al desarrollo humano.

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    César David Torres Fernández

    2013-01-01

    Full Text Available Este trabajo realiza una propuesta para contribuir al desarrollo humano, la problemática a tratar es la falta del mismo en este planeta. Por desarrollo humano se entiende la evolución integral del ser humano desde el punto de vista socioeconómico, político, cultural y espiritual (en armonía consigo mismo, con la naturaleza y con los demás seres humanos. En nuestro país existe pobreza, desempleo, corrupción, desigualdad, una pésima educación y cultura, así como problemas de alimentación que lo ubican entre los países con mayor obesidad adulta e infantil en el mundo, existiendo también en las zonas marginadas la desnutrición infantil. Por ello, debemos propiciar diversas opciones de desarrollo; se considera que el turismo alternativo, vinculado a la educación y a la cultura, puede contribuir de manera importante a contrarrestar la problemática antes planteada. En este sentido, nos interesa trabajar con las nuevas generaciones a manera de prevención, concientizándolas, que conozcan y practiquen los valores éticos, morales, familiares, espirituales, etcétera. En el aspecto metodológico, la investigación es de tipo bibliográfico, trabajo de campo, entrevistas y observaciones propias. Es un proyecto que surge como una alternativa dentro del desarrollo sustentable, con actividades de turismo de aventura y ecoturismo, asociado con talleres educativos relacionados con educación ambiental, valores, formación humana y social, educación para la paz, etcétera.

  17. Componentes émicos del bienestar. Hacia un modelo alternativo de desarrollo

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    Jorge Yamamoto

    2007-12-01

    Full Text Available Se presenta una propuesta alternativa a los modelos establecidos de bienestar y desarrollo a través de una metodología émica y post hoc. Esta se aplica a un corredor migratorio desde comunidades rurales hasta urbano marginales. Se aplicó una batería psicométrica desarrollada para este estudio a 550 participantes y una versión modificada del análisis factorial confirmatorio para satisfacer las demandas de teorización post-hoc del estudio. Se proponen modelos alternativos de necesidades universales, satisfacción subjetiva de vida, recursos y valores. Se encuentra una estructura de tres factores de personalidad. Los resultados son discutidos en relación con las teorías establecidas desde el referente europeo y estadounidense y se reflexiona sobre sus perspectivas para el desarrollo. -- An alternative model of well-being and development using an emic and post-hoc approach is presented. This method was applied to a non-educated corridor sample which includes rural and urban shantytowns (n = 550. A psychometric wellbeing battery was developed for this study. Analytical technique includes a modified version of Confirmatory Factor Analysis in order to meet the demands of the post-hoc theorisation rationale. Alternative models of universal needs, subjective life satisfaction, resources, and values are presented. A three factor personality solution is described. Discussion emphasises the advantages of these results compared to theories and approaches from Europe and United States in theoretical and empirical terms. Implications for development are also discussed.

  18. Los métodos alternativos en el estudio de la seguridad de cosméticos.

    OpenAIRE

    Lapuente, J.; M Borras; J González-Linares; H Llanas; Mitjans, M.; D Ramos-López; P Vinardell

    2014-01-01

    El Reglamento 1223/2009 establece las normas que deben cumplir todos los productos cosméticos comercializados en Europa, con objeto de velar por el funcionamiento del mercado interior y lograr un elevado nivel de protección de la salud humana garantizando el uso de métodos alternativos que no impliquen la utilización de animales. El Laboratorio Europeo de Referencia para las Alternativas a la Experimentación con Animales (EURL-EURL- ECVAM) es el laboratorio de referencia en Europa encargado d...

  19. DOLLINCO-INIA: TRIGO ALTERNATIVO PARA EL SUR DE CHILE Dollinco-INIA: an alternative wheat for Southern Chile

    OpenAIRE

    Cristian Hewstone M.; Claudio Jobet F.

    2001-01-01

    Dollinco-INIA es un trigo de pan (Triticum aestivum L), semienano, de hábito de desarrollo alternativo, obtenido por el Proyecto de Fitomejoramiento del Instituto de Investigaciones Agropecuarias (INIA), Centro Regional de Investigación Carillanca, Temuco. Es moderadamente susceptible a polvillo estriado, resistente a polvillo de la hoja y moderadamente resistente a septoriosis y oidio. Su rendimiento promedio en ensayos en cuatro temporadas ha fluctuado entre 7,84 y 14,46 t ha-1 en tres loca...

  20. Fondos de inversión alternativos (Hedge Funds) crisis y regulación, verdades y mentiras

    OpenAIRE

    Sánchez-Calero Guilarte, Juan; Tapia Hermida, Alberto Javier

    2013-01-01

    Los “hedge funds” han sido en gran medida responsables de la crisis financiera global que, desde el año 2007, asola los mercados desarrollados. Por ello, los Estados se han ocupado de regularlos para evitar el riesgo sistémico que pueden inducir en los respectivos mercados financieros. En este trabajo, nos ocupamos de la regulación de los Fondos de Inversión Alternativos en el Derecho comunitario europeo y de las Instituciones de Inversión Colectiva de Inversión Libre en el Derecho español. ...

  1. La dimensión social de los mass media. Medios alternativos: creando conciencia social para el desarrollo

    OpenAIRE

    Santiago Gallur Santorum

    2013-01-01

    Este artículo reflexiona sobre la necesidad de la movilización social a través de los medios de comunicación, ya que estos constituyen en muchos casos un modo de homogeneización del pensamiento social. Así, esta ponencia saca a la luz, una investigación que muestra cómo tres medios de comunicación alternativos han conseguido visibilizar temáticas sociales normalmente invisibilizadas por otros muchos medios. Concretamente en México, en un contexto social donde la violencia ha conseguido determ...

  2. Hojas de sol en la victoria regia: Emergencias de un pensamiento ambiental alternativo en América latina

    OpenAIRE

    Noguera de Echeverri, Ana Patricia

    2007-01-01

    La crisis de la razón eurocentrista y etnocentrista que enfrenta nuestra cultura hoy, expresa una crisis de dimensiones más profundas: la crisis de una cultura universalizante, homogeneizante y globalizante, que ha desdeñado las voces de otras culturas, otros mundos y otras formas de relación de los humanos con los ecosistemas. El pensamiento emergente de esta crisis, abre caminos alternativos al de la racionalidad instrumental, triunfadora y exitosa del capitalismo globalizante, que en lo...

  3. Agroecología y movimientos agroalimentarios alternativos en los Estados Unidos: Hacia un sistema agroalimentario sostenible

    OpenAIRE

    Fernández, Margarita; Goodall, Katherine; Richards, Meryl; Mendez, V. Ernesto

    2013-01-01

    El concepto de agroecología en Estados Unidos nace de un proceso dialéctico de coproducción de conocimiento por el cual la ciencia de la agroecología ha formado, y se ha formado a sí misma, gracias a movimientos agroalimentarios, políticas y prácticas locales alternativas. Este artículo examina la relación entre la agroecología y los movimientos agroalimentarios alternativos e identifica oportunidades para un mayor compromiso. El artículo concluye con una discusión sobre los re...

  4. Análisis del Turismo alternativo en comunidades indígenas de Chiapas, México

    OpenAIRE

    Romero, Agustín Ávila

    2015-01-01

    El turismo es una necesidad para todas las naciones, ya que genera ingresos, empleos, es una fuente de entrada de divisas que permite equilibrar la balanza de pagos de diferentes economías, entre otros factores. Pero junto con ello es fuente de profundas desigualdades y de impactos socio-ambientales considerables en naciones menos desarrolladas del mundo. El impulso a proyectos de Turismo Alternativo en el estado de Chiapas de la república mexicana es importante, ya que en esa entidad pervive...

  5. Convergencia oblicua: modelo estructural alternativo para la dorsal Neuquina (39ºs - Neuquén

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    José Silvestro

    2008-03-01

    Full Text Available La dorsal neuquina es un lineamiento estructural de escala regional desarrollado a los 39ºS, que se extiende por más de 270 km con orientación E-O, marcando el límite natural norte de la Patagonia. La actividad tectónica a lo largo de esta zona durante el Jurásico y Cretácico controló la sedimentación de la cuenca Neuquina desarrollando una serie de secuencias de crecimiento y discordancias asociadas. Por las características estructurales se reconoce un sector occidental con predominio de lineamientos orientados al NE relacionados a estructuras predominantemente compresivas y un sector oriental caracterizado por el predominio de lineamientos NO con desarrollo de estructuras transcurrentes. La orientación particular de este rasgo tectónico, aproximadamente perpendicular a los cinturones andinos, fue tradicionalmente explicado mediante dos modelos estructurales: transcurrencia e inversión tectónica. Basándose en nueva información de subsuelo y la disponibilidad de nuevos conceptos tectónicos, se plantea un esquema alternativo en donde se contempla el desarrollo de zonas dominadas por transcurrencia, estructuras relacionadas a inversión oblicua de hemigrábenes y el desarrollo de estructuras compresivas sin influencia de los rasgos extensionales previos. El arreglo en planta de las estructuras y su evolución en el tiempo puede ser originado por convergencia oblicua, bajo un campo de esfuerzos NO-SE, entre un bloque rígido ubicado al sureste (Cratón norpatagónico actuando como contrafuerte con límite oeste paralelo a la traza del río Limay y límite norte paralelo al cauce del río Negro, que converge con una zona al noroeste factible de ser plegada representada por la cuenca Neuquina. Este esquema permite explicar la distribución y orientación de las zonas compresivas y transcurrentes y su evolución en el tiempo con desarrollo de estructuras cada vez más jóvenes hacia la parte externa del sistema.

  6. Hospedeiros alternativos de Xanthomonas campestris pv. viticola Alternative hosts of Xanthomonas campestris pv. viticola

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    Ana Rosa Peixoto

    2007-04-01

    Full Text Available Xanthomonas campestris pv. viticola (Xcv, que causa o cancro bacteriano da videira, sobrevive em plantas infectadas, epifiticamente em órgãos da parte aérea e pode ser veiculada em mudas e/ou bacelos infectados. O trabalho teve como objetivo investigar possíveis hospedeiros alternativos do patógeno, visando fornecer subsídios para o manejo da doença. A partir das plantas invasoras Alternanthera tenella, Amaranthus sp., Glycine sp. e Senna obtusifolia com sintomas similares aos do cancro bacteriano da videira, coletadas em parreirais de Juazeiro e Petrolina, no Submédio São Francisco, foram isoladas bactérias semelhantes a Xcv. No entanto, nenhuma bactéria foi isolada de plantas de Commelina benghalensis e Azadirachta indica com sintomas semelhantes. A patogenicidade dos isolados bacterianos obtidos foi confirmada em plantas de A. tenella, Amaranthus sp., Glycine sp., S. obtusifolia e em mudas de videira cv. Red Globe, em condições de casa de vegetação. As plantas invasoras Chamaesyce hirta, Dactyloctenium aegyptium, Eragrostis pilosa e Pilea sp., inoculadas artificialmente com os isolados Xcv1 e UnB1216, também desenvolveram sintomas típicos do cancro bacteriano.Xanthomonas campestris pv. viticola (Xcv, which causes the bacterial canker of grapevine, survives in infected plants as an epiphyte on aerial plant parts and may be carried in infected transplants and/or cuttings. This study was performed to investigate putative alternative hosts of the pathogen, aiming to find support for disease management. Bacteria similar to Xcv were isolated from the weeds Alternanthera tenella, Amaranthus sp., Glycine sp. and Senna obtusifolia showing canker-like symptoms and collected in vineyards of Juazeiro and Petrolina at the Submédio São Francisco. No bacteria were isolated from Commelina benghalensis and Azadirachta indica showing similar symptoms. The pathogenicity of the isolates was confirmed in plants of A. tenella, Amaranthus sp

  7. Enfoques Alternativos sobre el Mercado de Trabajo: Una Evaluación Teórica Enfoques Alternativos sobre el Mercado de Trabajo: Una Evaluación Teórica

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    Andrés Solimano

    1988-03-01

    Full Text Available Enfoques Alternativos sobre el Mercado de Trabajo: Una Evaluación Teórica Alternative theories of the Labor market: Neoclassical, Keynesian, Neo-Marxian and segmentationist approaches are examined in this paper mainly from a theoretical perspective.Basic differences and open questions to each approach are studied. These concern to issues like efficiency of market result, nature of unemployment, unit of analysis (individuals vs. classes, time framework (short-run cycles vs. steady-states, market structure (segmentation vs. homogeneity, disequilibrium dynamics, aggregation, partial vs. general equilibrium and others.The paper is closed with a section which summarizes previous discussion and also highlights unresolved conceptual problems to each approach.

  8. Metodología para el estudio de las causas de rotura de cigüeñales en motores de combustión interna alternativos y compresores alternativos. Aplicación en un modelo de mantenimiento predictivo

    OpenAIRE

    Becerra Villanueva, José Antonio

    2007-01-01

    Los ejes cigüeñales son una parte fundamental en el funcionamiento de los motores de combustión interna alternativos y compresores volumétricos alternativos. El fallo de un cigüeñal no es uno de los problemas más frecuentes, sin embargo puede tener consecuencias muy importantes tanto en la integridad del sistema como en la disponibilidad de este, siendo además los costes asociados a su reparación, agravados por su difícil accesibilidad. En el diseño de cigüeñales el principal factor deter...

  9. Uso de virutas de roble como sistema alternativo al envejecimiento en barrica de vinos Sherry tipo oloroso

    OpenAIRE

    Chaves Muñoz, Margarita

    2012-01-01

    El uso de las virutas de roble (oak chips) es en muchos países productores un modo alternativo muy generalizado de elaboración del vino. Con este método, se adiciona la madera al vino, y con ella, sus aromas y cualidades organolépticas intrínsecas del roble, sin que necesariamente deba reposar en una barrica; muy al contrario de la forma de elaboración clásica que conocemos en España. Así, por ejemplo los vinos más significativos de las D.O. Jerez-Xérès-Sherry y Montilla-Morile...

  10. Uso de Materiais Alternativos em Processos de Adsorção de Corante Azul de Metileno

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    E. L. do Rego

    2014-11-01

    Full Text Available Este trabalho teve como objetivo empregar materiais alternativos, puros e/ou modificados com 5 ou 10% (m/m de  pentóxido de nióbio (Nb2O5, em processos de remoção de azul de metileno (AM. Entre os materiais alternativos foram utilizadas argila sanitária, argila de resíduo industrial, rochas sedimentares e cinzas de casca de arroz obtida pela queima a 350oC. Estes sólidos foram caracterizados pelas técnicas de difração de raios- X (DRX e espectroscopia na região do infravermelho (FTIR. Os testes de remoção de AM foram realizados em frascos de 125 mL, sob agitação constante, contendo 100 mL de solução de AM (100mg/L a 2000mg/L e adsorvente (0,1 a 0,6g, sob uma mesa agitadora a 200 rpm, em temperatura ambiente. A quantificação da remoção de AM foi realizada com auxílio de um espectrofotômetro UV-Vis da Varian (Cary 50, coletando 2 mL de amostra nos períodos de 2 à 1440 min. Dados de DRX evidenciaram uma mistura de argilominerais nos sólidos baseados em argilas. Nos ensaios de adsorção os materiais demonstraram eficiência para a remoção do corante, com destaque aqueles modificados com 10% de Nb2O5 exibindo 95% de remoção, no tempo de 120min, em solução de pH de ~6,5.

  11. Síndrome de Gilles de la Tourette associada ao transtorno de déficit de atenção com hiperatividade: resposta clínica satisfatória a inibidor seletivo da recaptura de serotonina e metilfenidato Tourette syndrome associated with attention-deficit hyperactivity disorder: satisfactory clinical response to selective serotonin reuptake inhibitor and methylphenidate

    OpenAIRE

    Roberta Benitez Freitas Passos; José Ramón Rodriguez Arras López

    2010-01-01

    A Síndrome de Gilles de la Tourette (SGT), caracterizada pela presença de tiques motores e vocais, apresenta elevada associação com transtorno obsessivo-compulsivo (TOC) e transtorno de déficit de atenção com hiperatividade (TDAH). Essas condições frequentemente causam mais prejuízo aos pacientes do que os tiques, propriamente. Relata-se o caso clínico de um paciente com SGT e comorbidade com TDAH e TOC. O tratamento com inibidor seletivo de recaptura de serotonina (ISRS) e metilfenidato prom...

  12. Sistemas sanitarios alternativos de participación para la construcción social del hábitat residencial rural

    Directory of Open Access Journals (Sweden)

    Beatriz Garzón

    2001-01-01

    Full Text Available El presente trabajo plantea una propuesta para la “Disposición Higiénica de Excretas” a través de ”sistemas cloacales alternativos”. Muestra la experiencia de Investigación-Acción participativa, realizada en dos comunidades rurales de la provincia de Tucumán, Argentina: Balderrama, Simoca, y Colalao del Valle, Tafí del Valle. Dicha experiencia surge como respuesta a: • una necesidad sentida de estas poblaciones y, • a uno de los objetivos planteados en relación a la Promoción del Saneamiento Ambiental. A través de este modelo “tecnológico constructivo-social”, se intenta resolver no sólo problemas materiales de los sectores más carenciados sino también crear espacios de participación que les permitan incrementar su calidad de vida, “re-elaborando” objetivos y estrategias para un mayor ajuste de las soluciones planteadas frente a la realidad. Es decir, que se apunta al mejoramiento material de las condiciones de vida de las comunidades involucradas, pero a partir del fortalecimiento de su organización y de sus redes de solidaridad, con el propósito de alcanzar un desarrollo sostenido del sector. Todo ello se basó en un proceso en el que grupos, comunidades e instituciones del sector popular, con el aporte de agentes externos, se asociaron para investigar, conocer y comprender sus problemas y para proponer sus propias estrategias de acción, en el entendido que ellos son los verdaderos transformadores de su hábitat. Este “Proyecto Compartido” posibilitó “resignificar” la práctica de Investigación y Extensión, ya que los mecanismos empleados permitieron el “hacer juntos” de comunidad y técnicos, de manera que ¨Investigación y Acción¨ dejaran de ser acciones separadas, evitando el desgaste del poblador rural sometido a objeto de estudio e involucrándolo en el proceso de “toma de decisiones” y de “ejecución”.

  13. Hospedeiros alternativos de Acidovorax avenae subsp. citrulli Alternative hosts of Acidovorax avenae subsp. citrulli

    Directory of Open Access Journals (Sweden)

    Ana Rosa P. Nascimento

    2004-09-01

    Full Text Available Uma das principais doenças que afeta o meloeiro é a mancha-aquosa, causada pela bactéria Acidovorax avenae subsp. citrulli (Aac. Visando conhecer hospedeiros alternativos de Aac, plantas no estágio de primeiras folhas definitivas, de várias espécies/cultivares, incluindo cucurbitáceas, solanáceas, gramíneas, leguminosas e caricáceas, foram inoculadas pela atomização da parte aérea com suspensão dos isolados Aac 1.49 e Aac 12.13, oriundos de melão e melancia, respectivamente. A suscetibilidade das plantas aos isolados foi avaliada pelo período de incubação (PI e incidência da doença (INC. Caupi, feijão, fumo e milho não apresentaram sintomas. Os menores PIs foram observados em cucurbitáceas (3,0 d, com exceção da bucha (6,83 d. Incidências da doença acima de 90% foram observadas em cucurbitáceas, excetuando a bucha e em solanáceas, para ambos os isolados de Aac. Em outro experimento, frutos de abóbora, abobrinha, berinjela, mamão, maxixe, melancia, melão, pepino, pimentão e tomate foram analisados quanto à suscetibilidade aos isolados Aac 1.49 e Aac 12.13. Os frutos foram inoculados pelo método de injeção subepidérmica, determinando-se PI, INC e severidade, avaliada pelo diâmetro da lesão externa (DLE e profundidade da lesão (PL. Menores PIs (2,0 d foram detectados em frutos de mamão, melancia, melão e pimentão. Incidência de 100% foi observada em todos os frutos inoculados, com exceção da abobrinha (93,75% e da abóbora (34,37%. Maiores DLEs foram observados em pepino (1,47 cm para o isolado Aac 1.49 e em melancia (1,60 cm e melão (1,07 cm para Aac 12.13. As maiores PL foram constatadas em melancia (1,72 e 0,75 cm respectivamente para Aac 1.49 e Aac 12.13. Frutos de berinjela não apresentaram sintomas externos embora as lesões internas tenham sido profundas.One of the most important melon diseases is the bacterial blotch caused by Acidovorax avenae subsp. citrulli (Aac. Alternative hosts of this

  14. Agent engineering

    CERN Document Server

    Liu, Jiming; Zhong, Ning; Wang, Patrick S P

    2001-01-01

    Agent engineering concerns the development of autonomous computational or physical entities capable of perceiving, reasoning, adapting, learning, cooperating and delegating in a dynamic environment. It is one of the most promising areas of research and development in information technology, computer science and engineering. This book addresses some of the key issues in agent engineering: What is meant by "autonomous agents"? How can we build agents with autonomy? What are the desirable capabilities of agents with respect to surviving (they will not die) and living (they will furthermore enjoy

  15. Autismo: implementación de un sistema alternativo de comunicación en un aula de educación infantil

    OpenAIRE

    Tabanera Arévalo, Nadia

    2012-01-01

    Este trabajo fin de grado, hace referencia a la intervención en un caso práctico con un niño diagnosticado recientemente con TEA. Mario, de 4 años, tiene autismo, también presenta problemas para comunicarse con la gente que lo rodea. Por ello, he diseñado la implementación de un sistema alternativo en el aula de educación infantil.

  16. La dimensión social de los mass media. Medios alternativos: creando conciencia social para el desarrollo

    Directory of Open Access Journals (Sweden)

    Santiago Gallur Santorum

    2013-06-01

    Full Text Available Este artículo reflexiona sobre la necesidad de la movilización social a través de los medios de comunicación, ya que estos constituyen en muchos casos un modo de homogeneización del pensamiento social. Así, esta ponencia saca a la luz, una investigación que muestra cómo tres medios de comunicación alternativos han conseguido visibilizar temáticas sociales normalmente invisibilizadas por otros muchos medios. Concretamente en México, en un contexto social donde la violencia ha conseguido determinar la actitud y el contenido de los medios de comunicación, tres medios (Proceso, Contralínea y CIMAC han sacado a la luz temáticas y noticias invisibilizadas por la mayoría. De este modo, estos tres medios están consiguiendo movilizar socialmente a la población al informarla sobre todo tipo de sucesos de temáticas tan duras como el narcotráfico o el feminicidio de Ciudad Juárez. Con ello, el conocimiento alimenta la acción social, y ésta, fundamentada en la crítica, permite mejorar los mecanismos democráticos basados en el derecho a la información de la población civil.

  17. Antibiotic Agents

    Science.gov (United States)

    ... either as public health or as non-public health antimicrobial agents. What is the difference between bacteriostats, sanitizers, disinfectants ... bacteria, however, there is considerable controversy surrounding their health benefits. The ... producing agents (Table of Antibacterials) have been used for many ...

  18. APLICAÇÃO FOLIAR DE FUNGICIDAS E PRODUTOS ALTERNATIVOS REDUZ A SEVERIDADE DO OÍDIO DO TOMATEIRO

    Directory of Open Access Journals (Sweden)

    MORAES, Wanderson Bucker

    2011-11-01

    alternativos sobre a severidade do oídio dotomateiro. Os maiores valores de severidade da doença foram observados em plantas que receberam aplicaçõesde água destilada. Todos os produtos avaliados foram eficientes em controlar o oídio do tomateiro. Entre osfungicidas avaliados, o fungicida sistêmico (tebuconazole foi mais eficiente que o fungicida protetor (oxicloretode cobre. O efeito da aplicação de tebuconazole, silicato de potássio, calda Viçosa e extrato alcoólico deprópolis apresentaram maior eficiência quando comparado com os demais tratamentos. Portanto, o efeito destesprodutos alternativos teve a mesma eficiência do fungicida sistêmico (tebuconazole. Assim, o uso de produtosalternativos é uma medida promissora a ser integrada no manejo do oídio do tomateiro.

  19. Alternative procedure for the cold test for soybean seeds Procedimento alternativo para o teste de frio em semente de soja

    Directory of Open Access Journals (Sweden)

    Bruno Guilherme Torres Licursi Vieira

    2010-10-01

    . Uma maneira de conseguir isso é pela melhoria dos testes de vigor. O teste de frio tem sido empregado em sementes de milho, no entanto, tem sido usado também para sementes de algodão (Gossypium spp., soja (Glycine Max, feijão ((Phaseolus vulgaris e ervilha (Pisum sativum. Este estudo foi conduzido com objetivo de ajustar o procedimento do teste para determinar o vigor de semente de soja. Foram utilizados seis lotes comerciais de semente de soja, cultivar BRS 133. O potencial fisiológico dos lotes foi avaliado usando-se os testes de germinação em rolo de papel toalha, tipo germitest, e em caixa com areia, de emergência de plântulas em campo, de tetrazólio, de envelhecimento acelerado e de condutividade elétrica. Determinou-se também o teor de água das sementes. Para composição dos procedimentos do teste de frio foi utilizada temperatura de 10ºC, tempo de permanência no frio por cinco dias, e quatro procedimentos: caixa com terra, rolo de papel com terra, rolo de papel sem terra e metodologia alternativa, rolo de papel sem terra sob água refrigerada. O delineamento experimental utilizado foi inteiramente casualizado com oito repetições e as médias foram comparadas pelo teste de Tukey (p = 0,05. Para verificar a dependência entre o método alternativo e os demais usou-se o coeficiente de correlação linear simples. Os procedimentos para condução do teste de frio apresentaram coeficientes de variação muito próximos (CV com destaque para a metodologia do rolo de papel com terra e procedimento alternativo, em média, com 94% e 93% de plântulas normais e CV de 3,2% e 3,6% respectivamente. O procedimento alternativo teve resultado satisfatório para estimar vigor da semente de soja, produzindo resultados consistentes em comparação ao procedimento tradicional.

  20. Substratos alternativos ao xaxim na produção de bromélia ornamental Alternative substrates to fern tree fiber in the production of ornamental bromeliad

    OpenAIRE

    Shoey Kanashiro; Keigo Minami; Teresa Jocys; Carlos Tadeu dos Santos Dias; Armando Reis Tavares

    2008-01-01

    O objetivo deste trabalho foi avaliar substratos alternativos para o cultivo da bromélia Aechmea fasciata (Lindley) Baker, para substituir com eficiência as misturas formuladas com o xaxim Dicksonia sellowiana (Presl.) Hook. Foram testados os substratos: casca de Pinus, casca de Eucalyptus, coxim, fibra de coco e xaxim, misturados com turfa e perlita, nas proporções 2:7:1, 5:4:1 e 8:1:1. O experimento foi realizado em condições de estufa com cobertura de polietileno, sombreada com tela a 70%....

  1. Inmigración internacional y movilidad entre sectores: Una exploración de escenarios alternativos para España

    OpenAIRE

    Ferri Carreres, Francisco Javier; Gómez Plana, Antonio G.; Martín Montaner, Joan

    2004-01-01

    Este trabajo explora los efectos económicos de la inmigración internacional en España a través de la construcción de un modelo de equilibrio general computable. Uno de los aspectos en los que se centra el trabajo es la influencia que tiene el grado de movilidad intersectorial de los trabajadores extranjeros, planteando dos escenarios alternativos: uno de perfecta movilidad y otro en el cual únicamente pueden trabajar en tres sectores concretos. Otra cuestión que se toma en cuenta a la hora de...

  2. Promoção da comunicação expressiva, recorrendo a um sistema aumentativo e alternativo de comunicação

    OpenAIRE

    Silva, Marta Filipa Ferreira da

    2015-01-01

    Conscientes de que a comunicação é um domínio fundamental na vida de qualquer ser humano, têm-se como objetivo levar a cabo um projeto de estudo de caso: Promoção da Comunicação Expressiva em Sujeitos com Necessidades Educativas Especiais, recorrendo a um Sistema Alternativo de Comunicação – estudo de caso. Este projeto foi aplicado a um sujeito com Paralisia Cerebral que apresentava comprometimento ao nível comunicação verbal, da leitura e da escrita. Na esfera deste estudo procurou-se delin...

  3. Abonos orgánicos como insumo de nutrición vegetal en un sistema hidropónico alternativo

    OpenAIRE

    Cuervo Osorio, Víctor Daniel

    2010-01-01

    El presente trabajo se realizó en los invernaderos del Colegio de Postgraduados, estado de México. Se comparó un sistema hidropónico convencional (inorgánico) y otro propuesto como alternativo (orgánico). En este ensayo la planta se ubicó en un sustrato inerte (tezontle) y sobre esté se colocó un abono orgánico, el cual nutre la planta. Los 3 abonos orgánicos fueron gallinaza, lombricomposta y estiércol bovino dosificados a 3 niveles cada uno (100, 200, 300 kg ha-1 de nitrógeno mineral) uti...

  4. Los lodos secos de depuradora de aguas residuales urbanas como combustible alternativo en Los Hornos de Clínker en Cataluña

    OpenAIRE

    Carrascón Ortiz, Sergio; Josa Garcia-Tornel, Alejandro

    2007-01-01

    La utilización de combustibles alternativos en los hornos de clínker de las fábricas de cemento es una posible solución para reducir las emisiones de gases de efecto invernadero a la atmósfera. En particular, la utilización de biomasa, como los lodos secos procedentes de depuradoras de aguas residuales urbanas, consigue dos efectos: la reducción total de la emisión de CO2 en la fracción substituida de combustible tradicional y evita la necesidad de enviar a vertedero este residuo. En este a...

  5. Avaliação de alimentos alternativos para cavalos adultos da raça Crioulo Evaluation of alternative feeds for adult Creole horses

    OpenAIRE

    Alex Martins Varela de Arruda; Leonir Bueno Ribeiro; Elzânia Sales Pereira

    2009-01-01

    Objetivou-se nesta pesquisa avaliar alimentos alternativos para cavalos adultos caracterizados como subprodutos agroindustriais por meio da digestibilidade dos nutrientes. Utilizaram-se cinco animais da raça crioulo em gaiolas de metabolismo individuais alimentados com cinco dietas: uma dieta-referência contendo ração peletizada e feno de capim-tifton 85 e outras quatro, com substituição de 30%, com base no peso (kg/kg), da dieta-referência por resíduo de soja, casca de soja, casca de trigo e...

  6. Estudo de padrões de expressão de transcritos alternativos do gene tbccd1 em tecidos humanos e linhas celulares cancerígenas

    OpenAIRE

    Câmara, Ana Isabel Rodrigues

    2013-01-01

    O splicing alternativo do pré-mRNA é um passo crítico para a expressão de genes sendo a principal fonte para a diversidade de proteínas nos eucariotas superiores. Atualmente pensa-se que ocorre em mais de 90% dos genes humanos. A proteína TBCCD1 humana é codificada por um gene localizado no cromossoma 3 (3q27.3) e apresenta a sua região codificante interrompida por 7 intrões. O presente estudo permitiu verificar que este gene origina três transcritos diferentes pelo processo de splicing alter...

  7. Produção de mudas de alface em substrato alternativo com adubação Production of lettuce seedlings using alternative substrates and fertilizer

    OpenAIRE

    Luiz Antonio Augusto Gomes; Artenisa C Rodrigues; Leonardo S. Collier; Selma dos S Feitosa

    2008-01-01

    Substratos alternativos, além de permitirem a produção de mudas de qualidade, reduzem os custos de produção. Neste trabalho avaliou-se a produção de mudas de alface (Lactuca sativa L.) utilizando misturas de casca de arroz carbonizada e húmus de minhoca com diferentes doses de SulPoMag®. O trabalho foi desenvolvido nas instalações da HortiAgro Sementes Ltda, em Ijaci (MG). Utilizou-se o delineamento de blocos casualizados, com cinco tratamentos e quatro repetições, sendo os tratamentos 1: 70%...

  8. La televisión comunitaria como medio alternativo para el empleo de las nuevas tecnologías. Caso específico: Escuela de Video Mesoamericana

    OpenAIRE

    Andrade Luna, Tatiana Eunice

    2016-01-01

    Como un aporte a la Comunicación Participativa, en especial a la televisión comunitaria y a la sociedad civil que conforman las comunidades de los diversos estratos sociales, incluyendo a las de escasos recursos; el presente trabajo es una investigación que analiza el medio televisivo en El Salvador, el papel de la televisión comunitaria y los aportes de la Escuela de video comunitario (Mesoamericana). Es pues la televisión comunitaria (comunicación participativa) un medio alternativo par...

  9. Modelización del comportamiento mecánico de motores térmicos alternativos de combustión interna para la selección de transmisiones de acoplamiento en banco de ensayo

    OpenAIRE

    Lavado Aguilar, Miguel Ángel

    2004-01-01

    El objetivo del proyecto será el de analizar las posibles alternativas disponibles actualmente en el mercado con el fin de encontrar un acoplamiento elástico que una un eje de motor alternativo y otro de banco de ensayo. Para cumplir dicho objetivo se llevará a cabo la construcción de una hoja de cálculo en la cual se introducen datos relativos a la geometría básica de un motor endotérmico y gracias a ella se calcularán diagramas de evolución de esfuerzos alternativos, par motor, temperatu...

  10. Avaliação de equipamento alternativo para pasteurização lenta de leite previamente envasado Value of alternative equipment for slow pasteurization of previously packed milk

    OpenAIRE

    Carmem Schuster; Helenice de Lima Gonzalez; Juliano Büchle; Cláudio Dias Timm

    2006-01-01

    A utilização de equipamentos alternativos de comprovada eficiência pode colaborar na viabilização do uso da pasteurização lenta por pequenos produtores, melhorando a rentabilidade da atividade e diminuindo o comércio de leite informal. O presente trabalho teve por objetivo avaliar a eficiência de equipamento alternativo para pasteurização lenta de leite previamente envasado. Quatorze partidas de 30 L de leite foram processadas e analisadas. As provas realizadas foram contagens de mesófilos ae...

  11. Agent, autonomous

    OpenAIRE

    Luciani, Annie

    2007-01-01

    The expression autonomous agents, widely used in virtual reality, computer graphics, artificial intelligence and artificial life, corresponds to the simulation of autonomous creatures, virtual (i.e. totally computed by a program), or embodied in a physical envelope, as done in autonomous robots.

  12. Performance of transport and selective media for swine Bordetella bronchiseptica recovery and it comparison to polymerase chain reaction detection Desempenho de meios de transporte e seletivo na recuperação de Bordetella bronchiseptica de suínos e sua comparação à detecção pela reação em cadeia pela polimerase

    Directory of Open Access Journals (Sweden)

    Tania Alen Coutinho

    2009-09-01

    temperaturas (10ºC e 27ºC e períodos de incubação (24, 72 e 120 horas. O experimento subseqüente comparou três meios seletivos (ágar MacConkey, meio seletivo G20G modificado e o meio de ceftiofur em relação às suas capacidades de recuperação a partir de amostras clínicas. O último experimento comparou a reação em cadeia pela polimerase aos três meios seletivos. No primeiro experimento, a recuperação de B. bronchiseptica nos sistemas de transporte foi melhor a 27ºC e as três formulações tiveram boas performances nesta temperatura, mas o conjunto das análises qualitativa e quantitativa apontou para o uso preferencial do meio Amies para o transporte de suabes nasais. O segundo experimento indicou que o ágar MacConkey e o G20G modificado mostraram resultados similares e foram superiores ao meio de ceftiofur. No experimento final, a técnica de reação em cadeia pela polimerase apresentou uma capacidade de detecção da B. bronchiseptica superior a do cultivo.

  13. Antifungal agents.

    Science.gov (United States)

    Ryder, N S

    1999-12-01

    At this year's ICAAC Meeting, new data on approximately 20 different antifungal agents were presented, while no new agents were disclosed. Drugs in late development include the triazoles, voriconazole (Pfizer Ltd) and Sch-56592 (Schering-Plough Corp), and the echinocandins, caspofungin (Merck & Co Inc) and FK-463 (Fujisawa Pharmaceutical Co Ltd). In contrast to previous years, presentations on these and earlier developmental compounds were relatively modest in scope, with few significant new data. Little new information appeared on the most recent novel class of agents, the sordarins (Glaxo Wellcome plc). Early clinical results were presented for FK-463, showing acceptable tolerability and dose-dependent efficacy in AIDS-associated esophageal candidiasis. A new liposomal formulation of nystatin (Nyotran; Aronex Pharmaceuticals Inc) was shown to be equivalent to conventional amphotericin B in empiric therapy of presumed fungal infection in neutropenic patients, but with reduced toxicity. Intravenous itraconazole (Janssen Pharmaceutica NV) was an effective prophylactic therapy in invasive pulmonary aspergillosis, while oral itraconazole was discussed as a treatment for fungal infection in heart and liver transplant patients. The allylamine compound, terbinafine (Novartis AG), showed good clinical efficacy against fungal mycetoma, a serious tropical infection. A major highlight was the first presentation of inhibitors of fungal efflux pumps as a strategy for overcoming resistance. MC-510027 (milbemycin alpha-9; Microcide Pharmaceuticals Inc) and its derivatives, potentiated the antifungal activity of triazoles and terbinafine in a number of Candida spp. Another pump inhibitor, MC-005172 (Microcide Pharmaceuticals Inc) showed in vivo potentiation of fluconazole in a mouse kidney infection model. Microcide Pharmaceuticals Inc also presented inhibitors of bacterial efflux pumps. PMID:16113946

  14. Trading Agents

    CERN Document Server

    Wellman, Michael

    2011-01-01

    Automated trading in electronic markets is one of the most common and consequential applications of autonomous software agents. Design of effective trading strategies requires thorough understanding of how market mechanisms operate, and appreciation of strategic issues that commonly manifest in trading scenarios. Drawing on research in auction theory and artificial intelligence, this book presents core principles of strategic reasoning that apply to market situations. The author illustrates trading strategy choices through examples of concrete market environments, such as eBay, as well as abst

  15. CONTROLE ALTERNATIVO DE OÍDIO EM ABOBRINHA DE MOITA COM SOLUÇÃO DE VINAGRE

    Directory of Open Access Journals (Sweden)

    NAKADA-FREITAS, Pâmela Gomes

    2014-10-01

    Full Text Available Alternative methods and products to control diseases in plants are growing among horticultural species producers. Diseases as powdery mildew can bring loss to producers. Several products are using instead pesticides, but there is a lack of information about its efficiency. This study aimed to evaluate the effect of vinegar solutions to control powdery mildew in zucchini squash. The treatments consisted of six solutions: 0 (water, 4, 8, 12 and 16% of wine vinegar and a chemical control (fenarimol at 0.3 mL.L-1. A weekly application was done, from the onset of symptoms (44 days after sowing, totalizing six application to control powdery mildew. The experimental design was a randomized block with four replications and six plants per plot considering four plants available. A total of five evaluation of disease severity (% of leaf area with symptoms of the disease, at 51, 58, 65, 72 and 79 days after sowing were done. It is concluded that solutions of vinegar (4-16% weren’t effective in controlling powdery mildew in zucchini squash, and that high concentrations burn the leaves. O interesse por métodos e produtos alternativos para o controle de doenças vem crescendo entre os produtores de hortaliças. Doenças como o oídio, podem trazer prejuízos aos produtores se não forem controladas a tempo. Vários produtos têm sido usados como alternativa aos tradicionais agroquímicos, no entanto, são poucas as informações obtidas quanto a eficiência destes. Este trabalho teve como objetivo avaliar o efeito de soluções de vinagre para o controle de oídio em abobrinha de moita. Os seis tratamentos consistiram de soluções a 0, 4, 8, 12 e 16% de vinagre de vinho tinto e uma testemunha com controle químico (fenarimol a 0,3 mL L-1. Foi realizada uma aplicação semanal, a partir do aparecimento dos primeiros sintomas (44 dias após a semeadura, totalizando seis aplicações para o controle do oídio. O delineamento foi em blocos ao acaso, com quatro

  16. Cuidados alternativos en la atención del embarazo en Jalisco, México Alternative care options for pregnancy in Jalisco, Mexico

    OpenAIRE

    Isabel Valadez; Noe Alfaro; Elizabeth Pozos

    2003-01-01

    En la atención prenatal se ha identificado la cultura de la madre como factor que influye en la utilización de los servicios de salud. Las creencias y prácticas de medicina tradicional y doméstica que realiza la mujer durante el embarazo pueden intervenir en la decisión de acudir a la atención médica. En una muestra no probabilística de 3.250 mujeres se identificaron los cuidados alternativos de atención al embarazo y se estableció su relación con un control prenatal satisfactorio. Para el an...

  17. Introducción de un ELISA como ensayo alternativo en la determinación de la potencia de vacunas antitetánicas

    OpenAIRE

    Juan Carlos Ramírez; Esther María Fajardo; Beatriz Romeu; Ubel Jesús Ramírez; Eduardo Alvarez; Rolando Ochoa; Alicia Perojo; Regla Sosa; Deolinda Silva; Irma Labrador; Adina García; Pablo González; Luis Izquierdo

    2005-01-01

    Por más de medio siglo de uso, la vacunación con el toxoide tetánico ha mostrado un elevado porcentaje de eficacia en la prevención del tétanos. Este trabajo pretende introducir un ensayo inmunoenzimático en fase sólida (ELISA) como método alternativo a la prueba de seroneutralización in vivo utilizada en la evaluación de la potencia de las vacunas antitetánicas.Se desarrolló un ELISA de tipo indirecto para la cuantificación de antitoxina tetánica en suero de curiel a partir de un estándar co...

  18. Radioprotective Agents

    Directory of Open Access Journals (Sweden)

    Ilker Kelle

    2008-01-01

    Full Text Available Since1949, a great deal of research has been carried out on the radioprotective activity of various chemical substances. Thiol compounds, compounds which contain –SH radical, different classes of pharmacological agents and other compounds such as vitamine C and WR-2721 have been shown to reduce mortality when administered prior to exposure to a lethal dose of radiation. Recently, honey bee venom as well as that of its components melittin and histamine have shown to be valuable in reduction of radiation-induced damage and also provide prophylactic alternative treatment for serious side effects related with radiotherapy. It has been suggested that the radioprotective activity of bee venom components is related with the stimulation of the hematopoetic system.

  19. Síndrome de Gilles de la Tourette associada ao transtorno de déficit de atenção com hiperatividade: resposta clínica satisfatória a inibidor seletivo da recaptura de serotonina e metilfenidato Tourette syndrome associated with attention-deficit hyperactivity disorder: satisfactory clinical response to selective serotonin reuptake inhibitor and methylphenidate

    Directory of Open Access Journals (Sweden)

    Roberta Benitez Freitas Passos

    2010-01-01

    Full Text Available A Síndrome de Gilles de la Tourette (SGT, caracterizada pela presença de tiques motores e vocais, apresenta elevada associação com transtorno obsessivo-compulsivo (TOC e transtorno de déficit de atenção com hiperatividade (TDAH. Essas condições frequentemente causam mais prejuízo aos pacientes do que os tiques, propriamente. Relata-se o caso clínico de um paciente com SGT e comorbidade com TDAH e TOC. O tratamento com inibidor seletivo de recaptura de serotonina (ISRS e metilfenidato promoveu melhora significativa dos sintomas de TDAH, sintomas compulsivos e tiques.Tourette Syndrome (TS, characterized by motor and vocal tics, is often associated with obsessive compulsive disorder (OCD and attention-deficit hyperactivity disorder (ADHD. These associated conditions frequently cause more impairment in patients than tics themselves. We report the case of TS with comorbid ADHD and OCD. Treatment with selective serotonin reuptake inhibitor and methylphenidate, led to significantly improvement of ADHD symptoms, compulsive symptoms and tics.

  20. An agent framework for dynamic agent retraining: Agent academy

    OpenAIRE

    Mitkas, P.; A. Symeonidis; Kechagias, D.; Athanasiadis, I.N.; Laleci, G.; KURT, G.; Kabak, Y.; Acar, A.; Dogac, A.

    2004-01-01

    Agent Academy (AA) aims to develop a multi-agent society that can train new agents for specific or general tasks, while constantly retraining existing agents in a recursive mode. The system is based on collecting information both from the environment and the behaviors of the acting agents and their related successes/failures to generate a body of data, stored in the Agent Use Repository, which is mined by the Data Miner module, in order to generate useful knowledge about the application domai...

  1. Controle da antracnose na pós-colheita de manga 'Ubá' com o uso de produtos alternativos

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    Lorena Moreira Carvalho Lemos

    2013-12-01

    Full Text Available Foi avaliada a eficácia de produtos alternativos aos agroquímicos no controle da antracnose na pós-colheita de mangas 'Ubá'. Frutos fisiologicamente maduros foram pulverizados até o completo molhamento, com suspensão de conídios de Colletotrichum gloeosporioides, na concentração de 2,5 x 10(5 conídios/mL. Após a secagem ao ar, foram pulverizados com água destilada (testemunha, tween 20 (8 mL/L de solução, Prochloraz (1,10 mL de Sportak 450 EC/L de solução, óleo de alho (10 mL/L + 8 mL/L de tween 20, óleo de amêndoa de Acrocomia aculeata + leite em pó instantâneo (LPI (25 mL/L+ 10 g LPI/L, óleo de amêndoa de A. aculeata + tween (25 mL/L + 8 mL/L de tween 20, biofertilizante agro-mos® (100 µL/L, óleo de neen (10 mL/L + 8 mL/L de tween 20, quitosana (10 mL/L + 8 mL/L de tween 20 e biomassa cítrica (10 mL/L + 8 mL/L tween 20.O solvente utilizado foi água destilada. Avaliaram-se o período de incubação, o período latente, a perda de massa fresca, a produção de CO² e, diariamente, a severidade e incidência da doença. Os períodos mais curtos de incubação da doença foram observados nos frutos tratados com óleo de neen, água + tween e biomassa cítrica, com aproximadamente cinco dias. O óleo de amêndoa de A. aculeata + LPI e agro-mos® foram os produtos que mais retardaram o aparecimento dos sintomas, impondo à doença o período de incubação de nove dias após a inoculação do patógeno. Quanto à severidade, o óleo de amêndoa de macaúba + LPI e o Prochloraz foram os mais eficientes em conter o crescimento do patógeno até o oitavo dia após a inoculação, sendo que, logo depois, os frutos tratados com óleo de amêndoa de A. aculeata + LPI se igualaram àqueles tratados com a maioria dos demais produtos. Os frutos tratados com óleo de amêndoa de A. aculeata + LPI e óleo de amêndoa de A. aculeata + tween manifestaram as estruturas do patógeno apenas após 13 e 14 dias de avalia

  2. Agent Chameleons: Virtual Agents Real Intelligence

    OpenAIRE

    O'Hare, Gregory; Duffy, Brian; Schoen-Phelan, Bianca; Martin, Alan; Bradley, John

    2003-01-01

    Agent Chameleons provides virtual agents powered by real intelligence, delivering next generation autonomic entities that can seamlessly migrate, mutate and evolve on their journey between and within physical and digital information spaces.

  3. Cultivo de Cattleya Lindley (Orchidaceae em substratos alternativos ao xaxim = Alternative substrates for Cattleya (Orchidaceae cultivation to substitute the tree fern fiber

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    Jorge Kaoro Yamakami

    2006-10-01

    Full Text Available Este trabalho teve como objetivo avaliar substratos alternativos ao xaxim no cultivo de um híbrido de Cattleya Lindley. Os substratos avaliados foram: xaxim; fibra de coco; casca de pínus + casca de arroz carbonizada (1:1v/v; casca de pínus+casca de arroz carbonizada (2:1v/v; casca de pínus+casca de arroz carbonizada (1:2v/v; casca de pínus e casca de arroz carbonizada. As mudas foram cultivadas em vasos de polipropileno, permanecendo em viveiro com 70% de luminosidade Os parâmetros avaliados um ano após o início do experimento foram: massa de matéria fresca total, altura da parte aérea, comprimento do pseudobulbo, comprimento da maior raiz, número de raízes, número de brotos, número de flores, pH e condutividade elétrica. O substrato constituído de fibra de coco proporcionou bons resultados, podendo ser considerado alternativo ao xaxim no cultivo deCattleya.The objective of this study was to evaluate alternative substrates tosubstitute tree fern fiber for cultivation of hybrids from the Cattleya species. Seedlings were cultivated in polypropylene vases, kept in screen shadowed nursery by a 70% of lighting. The following substrates were evaluated: tree fern fibers; coconut fiber; pinus bark+carbonized rice hull (1:1 v/v; pinus bark+carbonized rice hull (2:1 v/v; pinus bark+carbonized rice hull (1:2 v/v; pinus bark and carbonized rice hull. One year after the experiment, the followingparameters were evaluated: fresh matter mass, aerial part height, pseudobulb length, greater root length, number of buds, number of flowers, pH and electric conductivity. The substrate composed of coconut fiber showed better results, and can be used as the alternative substrate to tree fern fiber in the cultivation of Cattleya.

  4. Cuidados alternativos en la atención del embarazo en Jalisco, México Alternative care options for pregnancy in Jalisco, Mexico

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    Isabel Valadez

    2003-10-01

    Full Text Available En la atención prenatal se ha identificado la cultura de la madre como factor que influye en la utilización de los servicios de salud. Las creencias y prácticas de medicina tradicional y doméstica que realiza la mujer durante el embarazo pueden intervenir en la decisión de acudir a la atención médica. En una muestra no probabilística de 3.250 mujeres se identificaron los cuidados alternativos de atención al embarazo y se estableció su relación con un control prenatal satisfactorio. Para el análisis de asociación se dividió la variable de atención prenatal en (a satisfactoria y (b no satisfactoria de acuerdo a la Norma Oficial Mexicana. Se empleó la prueba de chi², el odds ratio y sus intervalos de confianza. Los cuidados alternativos resultaron asociados a una atención prenatal no satisfactoria. El entrenamiento psicoprofiláctico se comportó como factor protector. La cultura de la gestante es una configuración de significados y comportamientos, con mezcla de concepciones y prescripciones de la medicina doméstica, tradicional y académica, que varían según la etapa del embarazo, que pueden ser únicas o complementarias. Esta situación debe considerarse en los programas educativos en salud.The mother's culture has been identified as a factor in the use of health services for prenatal care. Beliefs and practices concerning traditional and domestic medicine used by women during pregnancy can play a role in the decision to seek medical care. In a non-probabilistic sample of 3,250 women, alternative care during pregnancy and its relationship to satisfactory prenatal care was studied. To analyze the association, the prenatal care variable was divided into (a satisfactory and (b unsatisfactory, according to a list of official Mexican standards. The chi-square test and odds ratio were applied, with p < 0.05. The association of alternative care with unsatisfactory prenatal care was established. Psycho-prophylactic training for

  5. EL FACTOR DE SOSTENIBILIDAD: DISEÑOS ALTERNATIVOS Y VALORACIÓN FINANCIERO - ACTUARIAL DE SUS EFECTOS SOBRE LOS PARÁMETROS DEL SISTEMA

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    Robert Meneu Gaya

    2013-05-01

    Full Text Available La Ley 27/2011, que reforma el sistema de pensiones español, introduce el factor de sostenibilidad, un instrumento que ajusta automáticamente los parámetros del sistema a la evolución de la esperanza de vida a partir del año 2027 y con revisiones cada 5 años, aunque la reciente Ley Orgánica 2/2012 de Estabilidad Presupuestaria y Sostenibilidad Financiera abre la posibilidad de que se anticipe su entrada en vigor si se proyecta un déficit a largo plazo en el sistema de pensiones. Dado que el diseño concreto del factor de sostenibilidad está pendiente, resulta relevante analizar cómo otros países de la Unión Europea han incorporado instrumentos similares en sus sistemas de pensiones y, desde esas experiencias, ofrecer diseños alternativos para el caso español, valorando los efectos de cada uno de ellos sobre los parámetros del sistema, utilizando para ello las recientes proyecciones de esperanza de vida del Instituto Nacional de Estadística. La Ley 27/2011, que reforma el sistema de pensiones español, introduce el factor de sostenibilidad, un instrumento que ajusta automáticamente los parámetros del sistema a la evolución de la esperanza de vida a partir del año 2027 y con revisiones cada 5 años, aunque la reciente Ley Orgánica 2/2012 de Estabilidad Presupuestaria y Sostenibilidad Financiera abre la posibilidad de que se anticipe su entrada en vigor si se proyecta un déficit a largo plazo en el sistema de pensiones. Dado que el diseño concreto del factor de sostenibilidad está pendiente, resulta relevante analizar cómo otros países de la Unión Europea han incorporado instrumentos similares en sus sistemas de pensiones y, desde esas experiencias, ofrecer diseños alternativos para el caso español, valorando los efectos de cada uno de ellos sobre los parámetros del sistema, utilizando para ello las recientes proyecciones de esperanza de vida del Instituto Nacional de Estadística.

  6. Produtos alternativos na proteção da videira contra o míldio Alternative products for the protection of vine against downy mildew

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    Vanessa Foresti Pereira

    2010-01-01

    Full Text Available O objetivo deste trabalho foi avaliar a eficiência de produtos alternativos na proteção da videira (Vitis vinifera contra o míldio (Plasmopara viticola, bem como determinar a influência desses produtos na qualidade dos frutos da cultivar Merlot. Para o controle da doença, foram utilizados produtos à base de extratos vegetais, manano-oligossacarídeos fosforilados, fosfitos e acibenzolar-S-metil, além de fungicidas tradicionais. A intensidade do míldio em folhas e cachos, a produtividade, o número total de cachos por parcela, o peso médio do cacho e baga e as características analíticas do mosto foram avaliados nas safras de 2007/2008 e 2008/2009. Os fosfitos proporcionaram proteção contra o míldio da videira, com produtividade semelhante à do tratamento com fungicidas tradicionais. Os tratamentos baseados em manano-oligossacarídeos fosforilados, acibenzolar-S-metil e extratos vegetais não apresentaram controle eficiente do míldio. Os produtos alternativos testados não influenciam a qualidade analítica dos frutos, mas proporcionam, em geral, peso médio de cachos e de bagas menor que o do tratamento com fungicidas.The objective of this work was to evaluate the efficiency of alternative products for the protection of vine (Vitis vinifera against downy mildew (Plasmopara viticola, and to determine the influence of these products on the quality of Merlot cultivar grapes. Products based on plant extracts, phosphorylated mannanoligosaccharides, phosphites and acibenzolar-S-methyl, besides traditional fungicides, were used for the disease control. The intensity of downy mildew on leaves and bunches, productivity, total number of bunches per plot, average weight of bunch and berry and analytical characteristics of grapes were assessed during the 2007/2008 and 2008/2009 seasons. Phosphites provided protection against downy mildew, and the yield was similar that of to the treatment with traditional fungicides. Treatments based on

  7. Produtos alternativos no controle do oídio em mudas de eucalipto Alternative products to control powdery mildew on eucalyptus seedlings

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    Rafaela Mazur Bizi

    2008-06-01

    Full Text Available A silvicultura brasileira tem empregado o eucalipto pela sua adaptabilidade, rápido crescimento e produtividade, além de possuir outras características como a qualidade, diversidade e adequação de sua madeira para a indústria. Para tal, existe a necessidade de uma produção contínua de mudas, as quais podem ser atacadas pelo fungo Oidium sp. O controle do oídio é feito com fungicidas, mesmo não havendo produtos registrados para o eucalipto. O objetivo deste trabalho foi avaliar produtos alternativos (sais e tanino, óleos, extratos de plantas, leite e derivados, e antagonistas para o controle desta doença comparando os mais promissores com fungicida. Os produtos foram pulverizados em mudas de Eucalyptus benthamii Maiden & Cambage e mantidas em casa-de-vegetação com alto potencial de inóculo de Oidium sp. A severidade da doença foi avaliada por meio de uma escala de notas de 0 (ausência de sintomas a 4 (sintomas muito severo e calculada a área abaixo da curva de progresso da doença (AACPD. Verificou-se que, os menores valores de AACPD de oídio foram obtidos com piraclostrobina + epoxiconazol, que controlou 92 % da doença, e os melhores produtos alternativos testados foram o leite de vaca e Lecanicillium sp. que controlaram respectivamente 36,5 % e 33,9 % da doença no ensaio comparativo.Eucalypt plays an important role in Brazilian forestry because of its good adaptation, fast growth, high productivity, as well as a lot of good qualities for industry. Eucalyptus reforestation needs a continuous production of seedlings, which can be attacked by Oidium sp. The control of powdery mildew is based on fungicides, but for eucalypts there are no products commercially registered. The objective of this work was to evaluate chemical products, essential oils, plants extracts, milk and dairy products and antagonist for the alternative control of this disease. Seedlings of E. benthamii Maiden & Cambage were used in the assays. Disease

  8. Effect of fungicides and alternative products in control of anthracnose and black spot of guavaEfeito de fungicidas e produtos alternativos no controle da antracnose e da pinta preta da goiaba

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    Ivan Herman Fischer

    2012-12-01

    Full Text Available This work aimed to evaluate the efficiency of fungicides in controlling in vitro and in vivo the causal agents of anthracnose (Colletotrichum gloeosporioides and C. acutatum and black spot (Guignardia psidii and evaluate the effect of alternative products to control these diseases. Inhibition of mycelial growth of the pathogens was evaluated for ten fungicides at concentrations of 1, 10 and 100 mg L-1 of active ingredient in potato-dextrose-agar medium. The effectiveness of the fungicides azoxystrobin + difenoconazole, cyproconazole, pyraclostrobin, tebuconazole and tebuconazole + trifloxystrobin in controlling disease incidence and severity of anthracnose, through applications in the field, was measured in fruits collected at three stages of maturation, according to the skin color (dark green, light green and yellowish green. In postharvest dipping of fruits, the products evaluated were citric acid, peracetic acid, salicylic acid, sodium bicarbonate, chlorine dioxide, Ecolife® and chitosan. The fungicides azoxystrobin + difenoconazole, pyraclostrobin, tebuconazole and trifloxystrobin + tebuconazole were highly effective in inhibiting the in vitro mycelial growth of G. psidii and moderately to highly effective in inhibiting C. acutatum and C. gloeosporioides. In field conditions, the fungicide azoxystrobin + difenoconazole was effective in controlling anthracnose and black spot in fruit at three maturity stage (skin color yellowish green. The alternative products tested were ineffective in the curative control of anthracnose and early blight at postharvest of guava. Os objetivos deste trabalho foram avaliar a eficiência de fungicidas no controle in vitro e in vivo dos agentes causais da antracnose (Colletotrichum gloeosporioides e C. acutatum e da pinta preta (Guignardia psidii da goiaba e avaliar o efeito de produtos alternativos no controle pós-colheita destas doenças. A inibição do crescimento micelial dos patógenos foi avaliada para

  9. Polar S810 como recurso alternativo ao eletrocardiograma no teste de exercício de 4 segundos Polar S810 como recurso alternativo al electrocardiograma en la prueba de ejercicio de 4 segundos Polar S810 as an alternative resource to the use of the electrocardiogram in the 4-second exercise test

    OpenAIRE

    Alan Santos Pimentel; Eduardo da Silva Alves; Rafael de Oliveira Alvim; Rogério Tasca Nunes; Carlos Magno Amaral Costa; Júlio Cesar Moraes Lovisi; Jorge Roberto Perrout de Lima

    2010-01-01

    FUNDAMENTO: O teste de exercício de 4 segundos (T4s) avalia o tônus vagal cardíaco durante o transiente inicial da frequência cardíaca (FC), em exercício dinâmico súbito, por meio da identificação do índice vagal cardíaco (IVC) obtido a partir do eletrocardiograma (ECG). OBJETIVO: Testar a utilização do monitor de frequência cardíaca (MFC) Polar S810 como recurso alternativo ao ECG na aplicação do T4s. MÉTODOS: Neste trabalho, 49 indivíduos do sexo masculino (25 ± 20 anos, 176 ± 12 cm, 74 ± 6...

  10. Relaciones entre el nivel de Desarrollo Moral e Intelectuakm edadm y género, en alumnos de secundaria de un colegio experimental/alternativo Li

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    Manuel Bello Domínguez

    1993-06-01

    Full Text Available Se aplicaron las pruebas SROM (nivel de juiciomoral y de LONGEOT (nivel de desarrollo intelectuala 34 alumnos/as de educación secundaria delcolegio experimental/alternativo "José Antonio Encinas"de Lima con edad entre 12 y 17 años.Los resultados muestran que existen marcadasdiferencias entre los resultados encontrados y los deestudios anteriores realizados tanto en el país comoen el extranjero. Los sujetos estudiados presentanniveles intelectuales más altos que los del promedioe incluso mayores que los hallados en muestras depersonas de mayor edad, alcanzando la gran mayoríade ellos los niveles de pensamiento formal. En relaciónal juicio moral ocurre algo similar, pues lamayoría de ellos habían logrado un nivel maduro,pese a su corta edad. Se encuentran correlacionesaltas y positivas entre los niveles intelectuales y dejuicio moral. También se encuentran correlacionesaltas y positivas entre nivel de pensamiento y edad,y entre nivel de juicio moral y edad. No se encontrarondiferencias de género en los niveles de pensamientoy de juicio moral.Se discute la probable relación entre los resultadosencontrados y las características del modelo deeducación alternativa aplicado en el colegio "Encinas",que prioriza el desarrollo de habilidades yactitudes y asigna a los propios alumnos un papelactivo y protagónico en el proceso educativo.

  11. Los Métodos alternativos para la solución de los conflictos su incidencia en el ámbito familiar cubano

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    Malena Proenza-Reyes

    2011-01-01

    Full Text Available Se ofrece una valoración sobre la importancia de la implementación dela mediación como método alternativo para la solución de los conflictos familiares, y el papel quejugaron algunos profesionales cubanos en esa importante misión,partiendo de las perspectivas que ofrece la creación de Centros de Mediación, los cuales ayudarán en las comunidades a la orientación y solución de diversos asuntos familiares y el rol desempeñado porlos trabajadores sociales. En el sistema jurídico cubano, en el ámbito familiar no se encuentra implementada la mediación, pero existe un grupo de profesionales que en su accionar diario desarrollan prácticas de mediación. Dentro de ese grupo es de interés resaltar al trabajador social quien como agentecomunitario tiene una enorme importancia, por su papel como verdadero consejero que ayuda dentro de la comunidad, a resolver los problemas sin necesidad de la intervención de la justicia estatal.

  12. Estudio del uso del lodo residual de la empresa Extralum S. A. como material alternativo en la fabricación de cementos especiales

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    Maricruz Vargas Camareno

    2006-05-01

    Full Text Available La empresa Extralum S. A. es una industria dedicada a la manufactura de aluminio crudo, anodizado y laqueado para uso arquitectónico. En su proceso de tratamiento de aguas residuales, genera alrededor de 90 toneladas al mes de un sólido blanco, el cual ya ha sido caracterizado, y se encontró que es rico en óxidos de aluminio hidratados; en la actualidad este material es desechado en rellenos sanitarios. Considerando que el cemento es un producto con demanda creciente, que para su producción requiere altos consumos de energía, cualquier avance que se realice para disminuir el consumo energético,tiene importantes beneficios económicos y ambientales. Dentro de las soluciones posibles, se encuentra la utilización de materiales alternativos que pueden ser utilizados como materias primas o materiales cementosos de reemplazo parcial o total del cemento Pórtland. Las pruebas realizadas a las diferentes mezclas demuestran que el lodo incorporado al cemento como relleno, modifica sus características iniciales, acelerando los tiempos de fragua, aumentando la porosidad del material, condición que afectó, negativamente, la resistencia del cemento, pero aumentó su capacidad aislante.

  13. APROVEITAMENTO DA CASCA DE MELANCIA (Curcubita citrullus, Shrad NA PRODUÇÃO ARTESANAL DE DOCES ALTERNATIVOS*

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    A. F. SANTANA

    2009-03-01

    Full Text Available

    A melancia, botanicamente classificada como Curcubita citrullus, Shrad é originária da Índia. Devido ao seu alto teor de água, é ideal para ser consurnida no período de calor intenso, mais propriamente no verão. Por ser um fruto que produz considerável quantidade de resíduos não comestíveis, o presente trabalho objetivou aproveitar as cascas da melancia para a produção artesanal de doces alternativos. Os resultados mostraram que os doces cremosos e em calda com e sem adição de coco, obtiveram excelente aceitabilidade entre os consumidores adultos e crianças. PALAVRAS-CHAVE: Melancia; cascas; doces crernosos; doces em calda.

  14. América Latina: Modelos alternativos de respuesta a la inocupación y exclusión juvenil

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    Juan Raso-Delgue

    2014-01-01

    Full Text Available Educación e inserción laboral en América Latina: 1. Inocupación juvenil y pobreza en América Latina.- 2. Los sistemas educativos y la inserción laboral de los jóvenes.- 3. Las dificultades de transición de la escuela al trabajo: los jóvenes ni-ni.- 4. Inocupación juvenil y actores sociales.- 5. Educación, desempleo y género.- 6. Contratos de trabajo especiales para jóvenes.- II. Modelos exitosos de transición de la formación a la inserción laboral: 7. Estrategias y acciones para favorecer la formación de los jóvenes.- 8. Estrategias para promover microemprendimientos.- 9. Modelos alternativos de transición de la educación/formación a la inserción laboral.- 10. Conclusiones.

  15. Efeitos do tratamento neonatal com inibidor seletivo de recaptura da 5-HT sobre o desenvolvimento anatômico crânio-encefálico Neonatal treatment effect with selective inibitor of 5-HT recapture over the cranium-encephalic anatomic development

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    Carolina Peixoto Magalhães

    2006-12-01

    Full Text Available Pesquisadas repercussões neonatais do tratamento crônico com inibidores seletivos de recaptura da serotonina (ISRS sobre crescimento somático, do encéfalo e crânio. Ratos machos foram divididos em grupos: controle (NaCl e Cit (10 µL/Kg citalopram 10 mg. Durante 21 dias pós-natais, foram aferidos peso corporal, eixo látero-lateral, ântero-posterior e circunferência do crânio. Aos 8, 15 e 22 dias pós-natais, os animais foram sacrificados para retirada do encéfalo para avaliar as medidas citadas acima. A utilização de ISRS provocou déficit de crescimento corporal, diminuição das medidas craniais e do encéfalo. O retardo é possivelmente decorrência de alteração na magnitude da ação trófica da serotonina sobre morfogênese crânio-facial, reforçando a participação do sistema serotoninérgico sobre o crescimento somático e ontogenético. O possível efeito hipofágico dos ISRS não é descartado.Neonatal repercussion researched of the serotonin selective recapture inibitor (SSRI chronic treatment about the somatic growth, of the encephalon and skull. Male rats were divided into groups: control (NaCl and Cit (10 µL/Kg citalopram 10 mg. In 21 post birth days were measured body weight, side axle , front and rear and skull circle. At 8, 15, 22 days after birth, animals were sacrified for the encephalon withdrawal to evaluate the measurements mentioned above. SSRI use caused body growth deficit, skull and encephalon reduction. The retard is possibly caused by the magnitude change of the trophic serotonin action over the skull-facial morphogenesis, reinforcing the serotoninergic system participation over the somatic and ontogenic growth. The SSRI possible hypophagic effects are not discarded.

  16. Action of selective serotonin reuptake inhibitor on aggressive behavior in adult rat submitted to the neonatal malnutrition Ação de inibidor seletivo da recaptação de serotonina sobre comportamento agressivo em rato adulto submetido à desnutrição neonatal

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    Jairza Maria Barreto Medeiros

    2001-09-01

    Full Text Available The effect of the malnutrition during suckling on the aggressiveness was investigated in adult rats treated or not with citalopram, a selective serotonin reuptake inhibitor (SSRI. The animals were divided into two groups according to the diet used: nourished group-- the rats received the control diet with 23% protein during the life; and malnourished group-- the rats had its mothers submitted to diet with 7.8% protein during suckling. At 120 days of age, each group was sub-divided according to the treatment: acute -- consisting a single i.p. injection of saline solution or 20-mg/Kg citalopram; chronic -- consisting the single injections (1 per day during 14 days of saline or 20 mg/Kg citalopram. The acute or chronic treatment with SSRI reduces aggressive response in nourished rats, but not in malnourished ones. Thus, the malnutrition during the critical period of brain development seems to induce durable alterations in the function of the serotoninergic neurotransmissionO efeito da desnutrição durante a lactação sobre a agressividade foi investigado em ratos adultos tratados ou não com citalopram, um inibidor seletivo da recaptação de serotonina (ISRS. Os animais foram divididos em dois grupos de acordo com a dieta: grupo nutrido-- ratos que receberam toda a vida dieta controle (23% de proteína; e grupo desnutrido-- ratos que tiveram suas mães submetidas a dieta com 7,8% de proteína na lactação. Aos 120 dias de idade, cada grupo foi sub-dividido conforme o tratamento: agudo -- consistindo de injeção única i.p. de solução salina ou 20mg/Kg de citalopram; crônico - consistindo de injeções únicas (1 por dia durante 14 dias de salina ou 20mg/Kg de citalopram. O tratamento agudo ou crônico com ISRS reduziu a resposta agressiva nos ratos nutridos, mas não nos desnutridos. Assim, a desnutrição durante o período crítico de desenvolvimento do cérebro parece acarretar alterações duradouras na função da neurotransmiss

  17. EVALUACIÓN DE UN MEDIO ALTERNATIVO PARA LA PRODUCCIÓN DE TOXINA TETÁNICA POR Clostridium tetani CEPA HARVARD

    Directory of Open Access Journals (Sweden)

    Arias Janeth

    2005-06-01

    Full Text Available Se evaluó un medio alternativo, buscando mejorar la producción de vacuna antitetánica utilizando Cl. tetani cepa Harvard a fin de conocer el comportamiento de éste frente a nuevos sustratos. El trabajo se dividió en dos fases, en la primera se evaluaron tres variables (glucosa, extracto de soya y sulfato ferroso cada una con tres niveles (bajo, intermedio y alto, para la producción de la toxina tetánica. Por medio de un análisis estadístico se escogieron los ensayos más relevantes (Ensayos 5, 6, 7 para la segunda fase; teniendo en cuenta que éstos produjeron la mayor cantidad de toxina en el menor tiempo. En la segunda fase se realizaron tres fermentaciones de 5 L por duplicado utilizando el medio GIA01. Los parámetros medidos en cada muestra fueron: biomasa, pH, glucosa y producción de toxina; a la última muestra de cada fermentación se le determinó la dosis mínima letal. A partir de los resultados obtenidos se concluyó que el comportamiento de Cl. tetani en medio GIA01 es muy similar al reportado en el medio tradicional en cuanto a la producción de toxina y la cinética de crecimiento del microorganismo, sin embargo con el medio GIA01 se produce mayor cantidad de biomasa lo cual no es deseable para una producción a gran escala.

  18. Trichogramma acacioi (Hymenoptera, Trichogrammatidae parasitism capacity at different temperatures and factitious hosts Capacidade de parasitismo de Trichogramma acacioi em diferentes temperaturas e hospedeiros alternativos

    Directory of Open Access Journals (Sweden)

    Dirceu Pratissoli

    2009-01-01

    Full Text Available It was studied the parasitism capacity of Trichogramma acacioi on Anagasta kuehniella and Sitotroga cerealella eggs at different temperatures (15, 20, 25, 30 and 35 ± 1°C. The parasitism of T. acacioi varied with temperature and host. The highest parasitism (³80% were observed during the first days after emergence in both hosts, at all tested temperatures. The accumulated parasitism varied with both host and temperature, being higher on A. kuehniella at 20°C, what shows good parasitoid species adaptation to this temperature. Thus, we conclude that the best host and best temperature to be used at mass-rearing of T. acacioi is A. kuehniella and 20ºC, respectively. Moreover, this Trichogramma species has great potential to be used in field releases at regions where average temperature is around 20ºC.Foi estudada a capacidade de parasitismo de Trichogramma acacioi em ovos de Anagasta kuehniella e Sitotroga cerealella em diferentes temperaturas (15, 20, 25, 30 e 35 ± 1°C. O parasitismo de T. acacioi variou com a temperatura e hospedeiro. O maior parasitismo (³80% foi observado durante os primeiros dias após a emergência, em ambos hospedeiros e em todas as temperaturas estudadas. O parasitismo acumulado variou nas diferentes temperaturas e hospedeiros, sendo maior em A. kuehniella a 20ºC, o que mostra uma boa adaptação da espécie do parasitóide a essa temperatura. Assim, concluímos que o melhor hospedeiro alternativo e melhor temperatura para serem usadas em criações massais de T. acacioi é a A. kuehniella e 20ºC, respectivamente. Ainda, esta espécie de Trichogramma tem grande potencial para ser usada em liberações de campo em regiões onde a temperatura média está em torno de 20ºC.

  19. Valor nutritivo de dietas contendo torta de mamona submetida a métodos alternativos de destoxificação para ovinos

    Directory of Open Access Journals (Sweden)

    R.N. Furtado

    2012-02-01

    Full Text Available Avaliaram-se o consumo e a digestibilidade de nutrientes por ovinos alimentados com rações contendo torta de mamona sem tratamento (NT, tratadas com calcário calcítico (CC, ureia (UR, fosfato monobicálcico (FOS e por autoclave (ACL. Foram utilizados 20 ovinos em delineamento em blocos ao acaso, sendo 10 machos inteiros e 10 fêmeas, mestiços de raça Morada Nova. As dietas foram isoproteicas e isoenergéticas. A ricina foi parcialmente desnaturada pelos tratamentos de destoxificação da torta de mamona. Não houve efeito dos tratamentos de destoxificação da torta de mamona sobre o consumo de nutrientes. A digestibilidade da fibra em detergente neutro no tratamento NT foi de 57,5%, maior que no tratamento CC, de 52,4%. A digestibilidade do extrato etéreo foi mais alta no tratamento CC, média de 71,3%, em relação ao tratamento FOS, de 68,2%. Houve maior consumo de fibra em detergente neutro e fibra em detergente ácido dos machos em relação às fêmeas quando o consumo foi expresso em g/dia. A torta de mamona NT pode ser utilizada em dietas de ovinos como alimento proteico alternativo, participando em até 8% da dieta total, sem ocasionar redução expressiva no consumo e na digestibilidade.

  20. Desempenho agronômico de maracujazeiros tratados com produtos alternativos e fertilizantes foliares Agronomic performance of passion fruit plants treated with alternative products and foliar fertilizers

    Directory of Open Access Journals (Sweden)

    Keize Pereira Junqueira

    2011-03-01

    Full Text Available A resistência induzida é um método alternativo de controle de doenças. Entretanto, há poucos estudos relacionando o uso destes produtos e outros métodos alternativos à produtividade das plantas e às características físicas e químicas dos frutos. Objetivou-se avaliar a severidade de doenças, as características físicas e químicas de frutos e a produtividade de plantas tratadas com produtos alternativos e fertilizantes foliares. Plantas de maracujazeiro BRS Gigante Amarelo clonadas, em campo, foram submetidas, por um ano, a pulverizações quinzenais com: água (testemunha, Cuprozeb® (fungicida-padrão, acibenzolar-S-metil - ASM, Agro-mos®, fosfito de potássio, fosetyl-Al, gesso agrícola e CPAC-GE (produto em teste. O delineamento foi o em blocos casualizados, com quatro repetições e 20 frutos por repetição. Para o estudo da produtividade, utilizaram-se quatro repetições e seis plantas úteis por parcela. As colheitas ocorreram de novembro/2008 a abril/2009. As severidades foram avaliadas com escala de notas. Houve redução da severidade da virose, verrugose e bacteriose em todos os tratamentos, com exceção do Cuprozeb® para virose. Não foi observada redução da antracnose. Frutos com maior massa fresca foram obtidos com aplicações de gesso agrícola (236,83 g, CPAC-GE (234,10 g, fosetyl-Al ( 233,79 g, fosfito de potássio (230,64 g e Agro-mos® (221,15 g. Os mesmos resultados foram observados para diâmetro transversal e massa de polpa. Não houve diferenças significativas entre tratamentos para diâmetro longitudinal e espessura de casca. Quanto às características químicas dos frutos, com exceção do Cuprozeb®, que não diferiu significativamente da testemunha, todos os produtos proporcionaram incremento no teor de sólidos solúveis. Maior acidez titulável foi obtida com Cuprozeb®, gesso agrícola, Agro-mos®, fosetyl-Al e ASM. Não foi constatada alteração no pH dos frutos. Em relação

  1. Germinação de Aechmea nudicaulis (L.) Griseb. (Bromeliaceae) em diferentes substratos alternativos ao pó de xaxim = Germination of Aechmea nudicaulis (L.) Griseb. (Bromeliaceae) in different substracts as alternatives to Dicksonia sellowiana Hook

    OpenAIRE

    Adilson Anacleto; Raquel Rejane Bonato Negrelle; Henrique Soares Koehler

    2008-01-01

    Avaliou-se a germinação das sementes de Aechmea nudicaulis (L.) Griseb. (Bromeliaceae). As tentativas de produção desta espécie, a partir de sementes, têm ocorrido de forma empírica, utilizando-se substrato à base de pó de xaxim (Dicksonia sellowiana Hook.), que tem restrições de uso, por estar ameaçada de extinção. Foram testados cinco tipos alternativos de substratos de fácil acessibilidade: húmus de minhoca, areia, fibra de casca de coco, serapilheira e Plantmax®. O experimento foi realiza...

  2. Sistemas suplementares e alternativos de comunicação nas habilidades expressivas de um aluno com paralisia cerebral Augmentative and alternative systems in the expressive abilities of a cerebral palsy student

    OpenAIRE

    Débora Deliberato

    2011-01-01

    O objetivo desta pesquisa foi descrever o uso do sistema de comunicação suplementar e alternativo de um aluno com paralisia cerebral submetido à intervenção. Participou desta investigação um aluno com paralisia cerebral de 10 anos de idade, gênero masculino, que frequentava classe especial para deficientes físicos em uma escola estadual de uma cidade do interior de São Paulo. As atividades programadas foram realizadas duas vezes por semana, durante dois anos, em um Laboratório de Educação Esp...

  3. IMPACTO ECONÔMICO, SOCIAL E AMBIENTAL DO USO DO METODO ALTERNATIVO DE DETERMINAÇÃO DE FIBRA EM DETERGENTE ÁCIDO E FIBRA EM DETERGENTE NEUTRO

    OpenAIRE

    Vinholis, Marcela de Mello Brandao; Tupy, Oscar; Souza, Gilberto Batista; Nogueira, Ana Rita Araujo; Primavesi, Odo

    2006-01-01

    O controle da qualidade de forrageiras e da alimentação animal é estratégico para garantir o sucesso da atividade produtiva das cadeias da carne e do leite bovino. O objetivo deste trabalho foi avaliar o impacto econômico, social e ambiental da adoção da tecnologia alternativa para a avaliação da qualidade de forrageiras a fim de auxiliar na determinação do valor nutricional do alimento animal. O método alternativo difundido e adotado por laboratórios de controle da qualidade é uma simplifica...

  4. Contribución al conocimiento del comportamiento térmico y la gestión térmica de los motores de combustión interna alternativos.

    OpenAIRE

    ROMERO PIEDRAHITA, CARLOS ALBERTO

    2009-01-01

    El trabajo desarrollado en la presente tesis está encaminado a estudiar los fenómenos de la transmisión de calor y balance térmico en los motores de combustión interna alternativos, tanto en el cilindro como en el sistema de refrigeración. El principal objetivo de la tesis ha sido la utilización y extensión de un programa computacional de predicción de temperaturas de paredes del motor y de dos programas comerciales de modelado de sistemas termohidráulicos para estudiar los flujos de calor de...

  5. Estado del Arte del Uso del Gas de Gasificación Termoquímica de Biomasa(GG), en Motores de Combustión Interna Alternativos

    OpenAIRE

    Fonseca Gonzalez, Natalia Elizabeth

    2003-01-01

    El presente trabajo, desarrollado en el marco del Convenio de Cooperación educativa entre la ETSII - UPM y el Ciemat, se realiza con el fin de determinar líneas futuras de investigación y/o aplicación de la tecnología de gasificación termoquímica de biomasa integrada a motores de combustión interna alternativos (MCIA) para generación de potencia, motivados por la necesidad de reducir las emisiones contaminantes, aumentar el uso de las fuentes renovables de energía, reducir la dependencia econ...

  6. Modelo de cálculo y aplicación informática para la fase cerrada de un motor alternativo de combustión interna de ciclo Otto

    OpenAIRE

    Ferrer Díaz, Marcos; Viscarro Torralba, Juan B.

    2006-01-01

    El presente proyecto tiene como objetivo desarrollar un modelo de cálculo basado en una simulación termodinámica cero-dimensional de la fase cerrada – compresión, combustión y expansión de la mezcla aire-combustible – de un motor alternativo de combustión interna (MACI) de ciclo Otto – encendido con chispa trabajando con gasolina –. Para conseguir el modelo de cálculo será necesario tener en cuenta todos los parámetros que influyen en las diferentes etapas de la fase cerrada del cicl...

  7. Evaluación de la toxicidad aguda de extractos de plantas medicinales por un método alternativo (Evaluation of acute toxicity of extracts of medicinal plants by an alternative testing)

    OpenAIRE

    Deodelsy Bermúdez Toledo:; |Emilio Monteagudo Jimenez; Maria Boffill Cárdenas; Luis E. Díaz Costa; Alexander Roca Simeón; Emoe Betancourt Morgado; Silveira Prado, Enrique A

    2007-01-01

    Se evaluó la toxicidad a dosis única de seis extractos de plantas medicinales: Psidium guajava L. (guayaba), Eucalyptus citriodoraHooker (eucalipto de limón), Cymbopogon citratus (DC) Stapf (caña santa, hierba de limón), Hibiscus elatus Sw. (majagua), Justicia pectoralis Jacq. (tilo), Plectranthus amboinicus (Lour.) Spreng (orégano francés) mediante un método alternativo e internacionalmente validado y aceptado (procedimiento de dosis fijas) en ratasSprague Dawley. El grupo tratado recibió po...

  8. Efeito de tratamentos químicos alternativos no controle de Diaphania spp. (Lepidoptera: Crambidae) em pepino = Effect of alternative chemical treatments on the Diaphania spp. (Lepidoptera: Crambidae) control in cucumber

    OpenAIRE

    Alvimar Bavaresco

    2007-01-01

    As brocas-das-cucurbitáceas Diaphania nitidalis e D. hyalinata são pragas importantes na cultura do pepino, danificando a parte aérea das plantas. Para seu controle, normalmente são empregados inseticidas de alta toxicidade e baixa seletividade aos inimigosnaturais. O objetivo deste trabalho foi avaliar o efeito de tratamentos químicos alternativos utilizados na produção orgânica no controle das brocas. Os tratamentos avaliados foram: 1. Bacillus thuringiensis var. kurstaki (Dipel PM®); 2. Ól...

  9. Educación para la participación: Desarrollo de un currículum alternativo en la ESO sobre ciudadanía y medios de comunicación

    OpenAIRE

    Francisco Amat, Andrea

    2008-01-01

    La presente Tesis Doctoral consiste en la aplicación de un currículum alternativo vinculado al concepto de ciudadanía y a la emergencia de los medios de comunicación, con una metodología pedagógica concreta, en Institutos de Educación Secundaria. El objetivo principal es el de comprobar cambios cognoscitivos y actitudinales en los adolescentes que participaron en el proyecto con respecto a la política, los medios de comunicación y la sociedad en la que viven. Este trabajo de investigación bas...

  10. El arbitraje virtual como medio alternativo para la resolución de los conflictos surgidos en el comercio electrónico y su legalidad en la normativa vigente venezolana

    Directory of Open Access Journals (Sweden)

    María Eugenia Canga

    2005-09-01

    Full Text Available La presente investigación se orientó al análisis del Arbitraje Virtual como medio alternativo para la Resolución de los Conflictos surgidos en el comercio electrónico y su Legalidad en la Normativa Vigente Venezolana. Las conclusiones de la misma indicaron que pese a que presenta ciertas dificultades en su aplicación, el arbitraje virtual es una excelente alternativa para resolver conflictos originados en el comercio electrónico y que la aplicación del arbitraje virtual es totalmente legal a la luz de la normativa vigente en Venezuela.

  11. Los sistemas de barrancos mexicanos, un recurso potencial para el turismo alternativo. El caso de los Barrancos del río Calderón, Estado de México

    OpenAIRE

    José Isabel Juan Pérez; José Francisco Monroy Gaytán; Jesús Gastón Gutiérrez Cedillo; Xanat Antonio Némiga; Miguel Ángel Balderas Plata

    2009-01-01

    El sistema de barrancos del río Calderón, ubicado al sureste del Estado de México,que comprende porciones de los municipios de Villa Guerrero, Ixtapan de La Sal y Zumpahuacán, representa un elemento geográfico de trascendencia para las familias de la región. En este lugar coexisten diversos ecosistemas con elementos geográficos, paisajísticos, geomorfológicos, hidrológicos y amplia biodiversidad que pueden ser utilizados para el turismo alternativo. Mediante el método geográfico, incluyendo c...

  12. Efeito de produtos alternativos para o controle do bolor verde (Penicillium digitatum) em pós-colheita de citros Effect of the alternative products for control of green mold (Penicillium digitatum) in post-harvest citrus fruit

    OpenAIRE

    DANIEL ANDRADE DE SIQUEIRA FRANCO; WAGNER BETTIOL

    2002-01-01

    O objetivo do trabalho foi verificar a ocorrência de sinergismo entre misturas de produtos alternativos aos fungicidas, para o controle do bolor verde (Penicillium digitatum) em pós-colheita de citros. Foram testados dez produtos individualmente e trinta e cinco combinações destes produtos dois a dois, em comparação com tiabendazole e testemunha, com e sem inoculação. Os produtos testados não apresentaram efeito de sinergismo, exceto a mistura carbonato de Na + ácido bórico. Carbonato de Na e...

  13. AgentChess : An Agent Chess Approach

    OpenAIRE

    Fransson, Henric

    2003-01-01

    The game of chess has many times been discussed and used for test purpose by science departments of Artificial Intelligence (AI). Although the technique of agent and as well multi-agent systems is quite old, the use of these offspring of AI within chess is limited. This report describes the project performed applying the use of agents to a chess program. To measure the performance of the logic has tests between the developed program main parts been performed. Further tests against a tradition...

  14. Agents in domestic environments

    OpenAIRE

    van Moergestel, Leo; Langerak, Wouter; Meerstra, Glenn; Nieuwenburg, Niels van; Pape, Franc; Telgen, Daniël; Puik, Erik; meyer, john-jules

    2013-01-01

    Athor supplied : "This paper describes an agent-based architecture for domotics. This architecture is based on requirements about expandability and hardware independence. The heart of the system is a multi-agent system. This system is distributed over several platforms to open the possibility to tie the agents directly to the actuators, sensors and devices involved. This way a level of abstraction is created and all intelligence of the system as a whole is related to the agents involved. A pr...

  15. Culturally Aware Agent Communication

    DEFF Research Database (Denmark)

    Rehm, Matthias; Nakano, Yukiko; Koda, Tomoko;

    2012-01-01

    Agent based interaction in the form of Embodied Conversational Agents (ECAs) has matured over the last decade and agents have become more and more sophisticated in terms of their verbal and nonverbal behavior like facial expressions or gestures. Having such “natural” communication channels...

  16. Riot Control Agents

    Science.gov (United States)

    ... a person has been exposed to riot control agents. Long-term health effects of exposure to riot control agents Prolonged ... person is removed from exposure to riot control agents, long-term health effects are unlikely to occur. How you can ...

  17. Reasoning about emotional agents

    NARCIS (Netherlands)

    Meyer, J.-J.

    2008-01-01

    In this paper we discuss the role of emotions in artificial agent design, and the use of logic in reasoning about the emotional or affective states an agent can reside in. We do so by extending the KARO framework for reasoning about rational agents appropriately. In particular we formalize in this f

  18. EFFICIENCY OF THE ENRICHMENT BROTHES (LEB1 AND LEB2 AND SELECTIVE AGARS (LPM AND LSAB-CAN TO ISOLATE BACTERIA OF THE GENUS Listeria IN MEAT AND RESIDUAL WATER OF WASHING CARCASS EFICIÊNCIA DOS CALDOS DE ENRIQUECIMENTO (LEB1 E LEB2 E DOS ÁGARES SELETIVOS (LPM E LSAB-CAN NO ISOLAMENTO DE BACTÉRIAS DO GÊNERO Listeria EM CARNE BOVINA E ÁGUA RESIDUÁRIA DE LAVAGEM DE CARCAÇA

    Directory of Open Access Journals (Sweden)

    Albenones José de Mesquita

    2007-09-01

    Full Text Available

    In this paper it was observed the efficiency of enrichment brothes for Listeria (LEB1 and LEB2, associated to the passage of the culture through a 0.25% potassium hidroxide solution, verifying that the secondary enrichment broth (LEB2 and LEB2KOH was better than the primary enrichment broth (LEB1KOH for this purpose. On the other hand, lithium chloride-phenylethanol-moxalactam agar and the selective Listeria agar base, supplemented with cicloheximide, acriflavine and nalidixic acid (LSAIB-CAN showed equivalency, at the statistic point of view (p=0.l442, in relation to the number of positive samples for Listeria spp., although the LSAB-CAN agar had given the greatest number of bacteria isolated from this genus.

    KEY-WORDS: Listeria; enrichment broth; selective agar.

    No presente trabalho verificou-se a eficiência dos caldos de enriquecimento para Listeria (LEB1 e LEB 2 associados à passagem da cultura por uma solução de hidróxido de potássio a 0,25%, constatando-se que o caldo de enriquecimento secundário (LEB2 e LEB2KOH foi superior ao caldo de enriquecimento primário (LEB1KOH. Por outro lado, o ágar cloreto de lítio-feniletanol-moxalactam (LPM e o ágar base seletivo para Listeria, suplementado com cicloheximida, acriflavina e ácido nalidíxico (LSAB-CAN equivaleram-se estatisticamente (p= 0,l442 em relação ao número de amostras positivas para Listeria, embora o ágar LSAB-CAN tenha proporcionado um maior número de isolamentos da bactéria.

    PALAVRAS-CHAVE: Caldo de enriquecimento; ágar seletivo; Listeria.

  19. Agents modeling agents in information economies

    Energy Technology Data Exchange (ETDEWEB)

    Vidal, J.M.; Durfee, E.H. [Univ. of Michigan, Ann Arbor, MI (United States)

    1996-12-31

    Our goal is to design and build agents that act intelligently when placed in an agent-based information economy, where agents buy and sell services (e.g. thesaurus, search, task planning services, etc.). The economy we are working in is the University of Michigan Digital Library (UMDL), a large scale multidisciplinary effort to build an infrastructure for the delivery of library services. In contrast with a typical economy, an information economy deals in goods and services that are often derived from unique sources (authors, analysts, etc.), so that many goods and services are not interchangeable. Also, the cost of replicating and transporting goods is usually negligible, and the quality of goods and services is difficult to measure objectively: even two sources with essentially the same information might appeal to different audiences. Thus, each agent has its own assessment of the quality of goods and services delivered.

  20. Pagamentos por serviços ambientais, custos de oportunidade e a transição para usos da terra alternativos: o caso de agricultores familiares do Nordeste Paraense

    Directory of Open Access Journals (Sweden)

    Rosangela Calado da Costa

    2013-07-01

    Full Text Available Neste artigo, avalia-se o papel que o pagamento por serviços ambientais proposto pela política pública Proambiente (2003-2007 poderia ter tido sobre a substituição do uso da terra tradicional (sistema de “derruba-e-queima” e a adoção de usos da terra alternativos, capazes de fornecer maiores níveis de serviços ambientais, entre agricultores familiares do Nordeste do Pará, Amazônia Brasileira. Para isso, foram estimados custos de oportunidades para os usos da terra tradicional e alternativos (agricultura sem uso do fogo, sistemas agroflorestais, manejo de açaí, enriquecimento de capoeira e apicultura. Os resultados indicaram que o pagamento do Proambiente teria sido insuficiente para incentivar o abandono do uso da terra tradicional e que poderia ter sido mais promissor fornecer condições para que os agricultores familiares realizassem a transição para usos da terra capazes de fornecer maiores níveis de renda no longo prazo, como sistemas agroflorestais e manejo de açaizal.

  1. Modos de vida alternativos: o caso da comunidade Noiva do Cordeiro http://dx.doi.org/10.15601/1983-7631/rt.v3n5p152-158

    Directory of Open Access Journals (Sweden)

    Adilson Schultz

    2011-04-01

    Full Text Available Noiva do cordeiro é uma comunidade rural liderada por mulheres, que desenvolveu um modo de vida alternativo e sustentável, com partilha de bens e fim da religião institucionalizada. Forjado ao longo de mais de um século, num processo de constantes rupturas religiosas, familiares e ideológicas, esse inusitado modo de vida produziu uma comunidade autônoma, com sujeitos autônomos e responsáveis uns pelos outros, que se tornaram lideranças sociais e políticas. No centro de sua história, experiências de sofrimento e rupturas relacionadas à religião, à fome, e à estrutura familiar patriarcal. O estudo do caso de Noiva do Cordeiro tem a intenção de analisar elementos subjetivos deste processo, verificando os indicativos e as implicações de tal fenômeno religioso e social, especialmente os limites e o fim de determinado modelo de religião. Os pressupostos teóricos deste estudo apontam para uma perspectiva transdisciplinar que compreende a teologia, a sociologia e a psicologia da religião e, nestes campos, as teorias feministas.Palavras-chave: Noiva do Cordeiro; modos de vida alternativos; fim da religião; liderança de mulheres; valores humanos

  2. Substratos alternativos ao xaxim na produção de bromélia ornamental Alternative substrates to fern tree fiber in the production of ornamental bromeliad

    Directory of Open Access Journals (Sweden)

    Shoey Kanashiro

    2008-10-01

    Full Text Available O objetivo deste trabalho foi avaliar substratos alternativos para o cultivo da bromélia Aechmea fasciata (Lindley Baker, para substituir com eficiência as misturas formuladas com o xaxim Dicksonia sellowiana (Presl. Hook. Foram testados os substratos: casca de Pinus, casca de Eucalyptus, coxim, fibra de coco e xaxim, misturados com turfa e perlita, nas proporções 2:7:1, 5:4:1 e 8:1:1. O experimento foi realizado em condições de estufa com cobertura de polietileno, sombreada com tela a 70%. As bromélias foram cultivadas durante 435 dias, até o início do florescimento - estádio de comercialização. As variáveis analisadas foram as massas de matéria seca de: folhas, raiz, inflorescência, escapo floral e caule; além da massa de matéria seca total e a qualidade comercial. Os substratos formulados com xaxim ou casca de Pinus, nas proporções 2:7:1, 5:4:1 e 8:1:1, e com casca de Eucalyptus, fibra de coco ou coxim, na proporção 2:7:1, foram as misturas que apresentaram os melhores resultados. Os substratos formulados com casca de Eucalyptus, fibra de coco ou coxim, com 10% de turfa e 10% de perlita, na proporção 8:1:1, apresentaram os piores resultados.The objective of this study was to evaluate alternative substrates for the cultivation of the bromeliad Aechmea fasciata (Lindley Baker, to substitute the formulated mixtures with fern tree fiber from Dicksonia sellowiana (Presl. Hook. Tested substrates were: Pinus bark, Eucalyptus bark, coxim (made of coconut fiber, coir or fern tree fiber, mixed with peat and perlite, in the proportions 2:7:1, 5:4:1 and 8:1:1. The experiment was conducted in a greenhouse covered with polyethylene and shaded with shade cloth 70%. The bromeliads were cultivated during 435 days, until the beginning of the flowering, when they were suitable for commercialization. The evaluated parameters were dry masses of leaf, root, inflorescence, floral scape, and stem, besides total dry mass and the commercial

  3. FREQUÊNCIA DE PROJETOS ALTERNATIVOS DE FORMAÇÃO DE BASE E A AQUISIÇÃO MOTORA: O PROJETO BELGAIS

    Directory of Open Access Journals (Sweden)

    João Petrica

    2015-04-01

    Full Text Available Entre os desafios mais importantes do século XXI está a necessidade cada vez maior de criatividade e de imaginação nas sociedades multiculturais – necessidade que a Educação Artística pode ajudar a satisfazer através de projetos de colaboração escola – comunidade que assentam em princípios de cooperação, de inclusão, de integração e de solidariedade. É neste sentido que surgiu o Projeto Belgais. Este, encontra-se e funde-se com as diferentes formas de expressão criativa, como as artes plásticas, a música, o teatro, o jogo, a dança, o movimento e as técnicas de relaxamento, aproveitando estas experiências como um estímulo nos processos de raciocínio, de desenvolvimento das competências pessoais e sociais e de perceção do meio ambiente. Sustenta a experimentação e a aplicação de uma pedagogia diferenciada e experimental, em que a criança tem contacto direto com outras artes, novas culturas e vivências.A investigação partiu do pressuposto de que os projetos especiais continuam a ter, por vezes, um lugar pouco significativo no contexto do sistema educativo. propusemo-nos analisar o seu contributo no desenvolvimento psicomotor (processo de aquisições corporais, rítmicas e criativas dos alunos que dele beneficiam Objetivo: Partindo de uma reflexão em torno de vários estudos/projetos desenvolvidos, quer a nível nacional quer internacional, efetuámos uma pesquisa empírica comparativa que envolveu a aplicação de uma bateria de testes psicomotores a alunos de duas escolas do 1º ciclo do Ensino Básico do distrito de Castelo Branco: uma escola cujos alunos beneficiam de um projeto educativo alternativo e inovador: o Projeto Belgais (Escola da Mata e outra escola em que os alunos usufruem apenas da formação convencional (Escola dos Escalos de Baixo.

  4. Efeito tóxico de alimentos alternativos para abelhas Apis mellifera Toxic effect of alternative feeds for honeybees Apis mellifera

    Directory of Open Access Journals (Sweden)

    Fábia de Mello Pereira

    2007-04-01

    Full Text Available Esta pesquisa foi realizada com o objetivo de avaliar a existência de efeito tóxico em alimentos protéicos alternativos fornecidos para abelhas Apis mellifera. Medindo-se o tempo médio de mortalidade e o índice de mortalidade de abelhas confinadas, avaliou-se a existência de efeito tóxico do: (a feno das folhas de mandioca (Manihot esculenta; (b feno das folhas de leucena (Leucaena leococephala; (c farinha de vagem de algaroba (Prosopis juliflora; (d farinha de vagem de bordão-de-velho (Pithecellobium cf. saman; (e farelo de babaçu (Orbygnia martiana e (f sucedâneo do leite para bezerros da marca Purina®. O tempo médio de mortalidade variou de 4,46 a 11,74 e o índice de mortalidade variou de 4,58 a 12,80. Durante o experimento, obsevou-se que as abelhas alimentadas com farinha de bordão-de-velho ficavam envoltas em uma crosta de alimento, morrendo asfixiadas posteriormente. Os resultados demonstraram que a farinha de bordão-de-velho não deve ser fornecida às abelhas. Não foi observado efeito tóxico nos demais alimentos estudados.The objective of this research was to study toxic effects of alternative feeds for honeybees Apis mellifera. The average mortality time and the mortality index of cagged honeybees were assessed to evaluate any possible toxic effect of: (a cassava hay (Manihot esculenta; (b leucaena hay (Leucaena leococephala; (c mesquite pod meal (Prosopis juliflora; (d "bordão-de-velho" pod meal (Pithecellobium cf. saman; (e babassu bran (Orbygnia martiana and (f succedaneous for calfskin from Purina®. The mortality time average varied from 4.46 to 11.74 and the mortality index varied between 4.58 and 12.80. It was obseved that honeybees fed with "bordão-de-velho" pod meal got involved by stichy layer of food and died asphyxiated. Results showed that the flour of Pithecellobium cf. saman should not be used for feeding honeybees, considering the early mortality of workers fed with this meal. The other food studied

  5. La exportación como destino alternativo para la producción siderúrgica argentina entre 1976 y 1990

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    PATRICIA JEREZ

    2013-05-01

    Full Text Available La finalización del proceso de industrialización sustitutivo de importaciones y el inicio de una nueva etapa, signada por el privilegio otorgado a la inversión financiera, es el elemento que caracteriza al período bajo análisis. La importante disminución en el nivel de actividad producida como consecuencia de las políticas económicas implementadas se tradujo en una reducción del tamaño del mercado interno. Paralelamente, a nivel sectorial, convergieron ciertos factores, a saber: la situación de la industria siderúrgica mundial, la incorporación de nueva tecnología, los privilegios otorgados a través de las leyes de promoción y la concentración productiva en una menor cantidad de empresas, los cuales contribuyeron a delinear una nueva estructura para el sector siderúrgico. Bajo estas circunstancias, y ante una marcada disminución en la demanda sectorial local, la exportación se convirtió en el mercado alternativo para la producción siderúrgica nacional. Abstract During the period which is analyzed in this paper, industry was not considered the principal issue of the economic policy. Instead, financial investment was privileged. This fact derived in an important reduction of the economical activity level and, in consequence, the internal market reduced its size as the level of demand descended considerably. Particularly in the iron and steel industry, different elements contributed to establish a new sector´s structure, for example: the international situation of the mentioned industry, new technology, benefits originated in the laws of industrial promotion, less number of iron and steel firms. Considering all these facts, exporting part of the sector’s production emerged as a solution when the demand of iron and steel goods reduced its level in the local market

  6. Effects of leaf herbivory on the bromeliad Aechmea blanchetiana: a study of selective feeding by the scraper Acentroptera pulchella Efeito da herbivoria foliar na bromélia Aechmea blanchetiana: estudo sobre o padrão seletivo de forrageamento do inseto raspador Acentroptera pulchella

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    Noa Magalhães

    2012-12-01

    ência de estratégias defensivas contra herbivoria no padrão alimentar intra-específico de A. pulchella, sobre folhas da bromélia A. blanchetiana, nós: i quantificamos a aparente preferência intra-específica deste padrão alimentar, ii comparamos folhas e partes distintas em relação à estratégias morfo-fisiológicas, mecânicas, nutricionais e químicas contra herbivoria e iii avaliamos se algumas ou todas estas estratégias defensivas ajudariam a explicar o padrão alimentar observado. O raspador A. pulchella atacada preferencialmente a metade superior de folhas intermediárias e adultas de A. blanchetiana, mas não a metade inferior das mesmas folhas, as quais são mais resistentes à perfuração, mais espessas e apresentam menor teor de nitrogênio do que a parte superior. Ao mesmo tempo, porém, folhas jovens e tenras não foram atacadas. As metades atacadas também apresentaram maior teor de fenóis totais em comparação as não atacadas, indicando que os fenóis não atuam defensivamente neste caso. Outras estratégias morfo-fisiológicas e químicas contra herbivoria não variaram entre as partes ou folhas aqui avaliadas. O herbívoro estudado se alimenta preferencialmente de partes das folhas com maior teor de nitrogênio, evitando ao mesmo tempo outras com maior resistência à perfuração. Concluímos que o raspador A. pulchella apresenta claro padrão seletivo de forrageamento, onde o mesmo é direcionado mais por benefícios nutricionais do que estritamente por estratégias mecânicas ou químicas contra herbivoria.

  7. Chemical crowd control agents.

    Science.gov (United States)

    Menezes, Ritesh G; Hussain, Syed Ather; Rameez, Mansoor Ali Merchant; Kharoshah, Magdy A; Madadin, Mohammed; Anwar, Naureen; Senthilkumaran, Subramanian

    2016-03-01

    Chemical crowd control agents are also referred to as riot control agents and are mainly used by civil authorities and government agencies to curtail civil disobedience gatherings or processions by large crowds. Common riot control agents used to disperse large numbers of individuals into smaller, less destructive, and more easily controllable numbers include chloroacetophenone, chlorobenzylidenemalononitrile, dibenzoxazepine, diphenylaminearsine, and oleoresin capsicum. In this paper, we discuss the emergency medical care needed by sufferers of acute chemical agent contamination and raise important issues concerning toxicology, safety and health. PMID:26658556

  8. Decontamination Data - Blister Agents

    Data.gov (United States)

    U.S. Environmental Protection Agency — Decontamination efficacy data for blister agents on various building materials using various decontamination solutions This dataset is associated with the following...

  9. Avaliação de produtos alternativos para controle da requeima do tomateiro Quantification of the efficacy of alternative products for tomato late blight control

    Directory of Open Access Journals (Sweden)

    Lylian P. Diniz

    2006-04-01

    Full Text Available Em condições de campo, avaliaram-se produtos alternativos no manejo da requeima do tomateiro (Lycopersicon esculentum, causada por Phytophthora infestans, em três experimentos (E. Compararam-se, em E1, extratos de: [pimenta (Capsicum chinense + pimenta-do-reino (Piper nigrum + cravo (Syzygium aromaticum + açafrão-da-índia (Curcuma longa + alho (Allium sativum]; (pimenta-do-reino + cravo + alho; e (cravo + açafrão-da-índia + alho; em E2, óleo de nim (Azadirachta indica (0,5%; leite (20%; e calda bordalesa; e em E3, preparado homeopático obtido de tecido de tomateiro com requeima (dinamização C30; mistura água-etanol; e calda bordalesa. Em E1, os extratos e a testemunha não diferiram quanto à severidade na metade da epidemia (Y50, severidade final (Ymáx, área abaixo da curva de progresso (AACPD e taxa de progresso da doença (r. Em E2, Y50 com óleo de nim (3% e calda bordalesa (1% não diferiram; Ymáx foi maior com óleo de nim (44% que com calda bordalesa (14%; leite não reduziu Ymáx; r e AACPD foram menores com óleo de nim (0,161 e 533, respectivamente que na testemunha (0,211 e 1186, respectivamente e semelhantes àqueles com calda bordalesa (0,156 e 130, respectivamente; r e AACPD foram similares nos tratamentos leite e testemunha. Em E3, Y50, Ymáx, AACPD e r com a mistura água-etanol e preparado homeopático foram similares aos da testemunha. A calda bordalesa foi o tratamento mais eficiente no controle da requeima, e o óleo de nim foi promissor. No manejo da doença em sistemas alternativos de produção, é necessário integrar práticas, para se potencializarem os efeitos individualizados.The efficacy of alternative products to manage tomato (Lycopersicon esculentum late blight, caused by Phytophthora infestans, was evaluated in three field trials (E that compared: E1- [chili pepper (Capsicum chinense + black pepper (Piper nigrum + clove (Syzygium aromaticum + turmeric (Curcuma longa + garlic (Allium sativum

  10. Combinando intuição e objetividade na construção de cenários alternativos Combining intuition with objectivity in building scenarios

    Directory of Open Access Journals (Sweden)

    José Roberto Ribas

    2008-12-01

    Full Text Available O planejamento por meio de cenários completou 40 anos de existência. No período compreendido entre seu surgimento, em 1967, e o final da década de 70, observou-se um esforço analítico no sentido de aprimorar a técnica como ferramenta de apoio à decisão. Tal mobilização resultou em três linhas metodológicas distintas - as escolas de lógica intuitiva, de tendências probabilísticas e de análise prospectiva. Desde então, a preferência pela adoção da técnica dos cenários no planejamento não cresceu como se esperava. A limitação no seu uso é explicada pelo sucesso moderado que seus praticantes tiveram em balancear a tecnicalidade excessiva por um lado e a superficialidade relapsa por outro. Ademais, Millett (2003 destaca a reclamação da média gerência de que os cenários não tratam das situações competitivas e tampouco das decisões críticas que eles enfrentam em seus negócios. O autor sugere alguns desafios a serem enfrentados: (a resolver a confusão sobre a definição de cenário e as metodologias para a sua construção; (b esclarecer e ampliar as aplicações apropriadas aos cenários; e (c reduzir os recursos requeridos para executar o planejamento por cenários. O presente artigo tem por objetivo propor um procedimento para a construção de cenários que atenda a esses desafios. Por meio de uma abordagem exploratória, a metodologia proposta combina o julgamento subjetivo, obtido a partir da intuição dos especialistas, com métodos analíticos. O procedimento passo a passo foi aplicado ao longo da construção dos cenários alternativos para o consumo residencial de energia elétrica, no Estado do Paraná, até o ano 2015. As entrevistas estruturadas envolveram 14 especialistas selecionados por julgamento, e as informações secundárias foram coletadas de bases de dados socioeconômicos e do setor elétrico. Ao final, três cenários alternativos, com probabilidades subjetivas associadas, resultaram de

  11. Avaliação de alimentos alternativos para cavalos adultos da raça Crioulo Evaluation of alternative feeds for adult Creole horses

    Directory of Open Access Journals (Sweden)

    Alex Martins Varela de Arruda

    2009-01-01

    Full Text Available Objetivou-se nesta pesquisa avaliar alimentos alternativos para cavalos adultos caracterizados como subprodutos agroindustriais por meio da digestibilidade dos nutrientes. Utilizaram-se cinco animais da raça crioulo em gaiolas de metabolismo individuais alimentados com cinco dietas: uma dieta-referência contendo ração peletizada e feno de capim-tifton 85 e outras quatro, com substituição de 30%, com base no peso (kg/kg, da dieta-referência por resíduo de soja, casca de soja, casca de trigo e casca de milho. Os melhores coeficientes de digestibilidade de matéria seca, proteína bruta, extrato etéreo, fibra em detergente neutro e fibra em detergente ácido foram de 68,05% para a dieta com casca de milho, 61,38% para a dieta-referência, 64,50% para a dieta com resíduo de soja, 84,32% para a dieta com casca de milho e 60,62% para a dieta com casca de soja, respectivamente. O maior valor de matéria seca digestível foi obtido com a dieta-referência (62,10%, enquanto com as demais dietas, o valor médio foi de 50,22% de matéria seca digestível. Para os alimentos alternativos, os maiores valores de proteína bruta, extrato etéreo, fibra em detergente neutro e fibra em detergente ácido digestíveis, foram obtidos com casca de trigo (7,53%, resíduo de soja (5,11% e casca de soja (53,04 e 40,77%, respectivamente, destacando-se a disponibilidade de proteína da casca de trigo e a degradabilidade da fibra da casca de soja. Esses alimentos podem ser utilizados na alimentação de eqüinos, pois não comprometem a saúde do trato digestório. O nível de inclusão e a combinação desses subprodutos no balanceamento das dietas dependem da disponibilidade e do custo na região.The objective of this research was to evaluate alternative feeds for adult horses characterized as agroindustrial by-products through the total apparent digestibility and digestible nutrients determinations with Creole adult horses. Five animals were housed in

  12. Homeopathic remedies in a semi-intensive alternative system of broiler production Medicamentos homeopáticos en un sistema alternativo semi-intensivo de producción de pollos Medicamentos homeopáticos em um sistema alternativo de produção de frangos.

    Directory of Open Access Journals (Sweden)

    Nelton Antônio Menezes

    2009-03-01

    Full Text Available This experiment had the objective of evaluating the influence of homeopathic remedies on the performance and health of broilers in a semi-intensive alternative system of production. Two groups of 90 Cobb strain broilers were randomly allocated, at 21 days of life, to three treatments: Control, Calcarea carbonica 12cH and Calcarea phosphorica 12cH, in a randomized block design in two stages. The medication was administered in the birds' drinking water with a 5% hydro-alcohol extract solution in 5 drops per bird daily during 28 days, beginning at 22 days of age. Each stage comprised three blocks, totalizing six replications per treatment. Each treatment group consisted of 10 broilers. Birds were weighed at 21 days and weekly thereon, up to slaughter at 49 days. After slaughtering, carcasses, hearts, livers, gizzards and feet were also weighed. Differences among stages in weight gain (Stage 1 = 2,576 ± 38 g; Stage 2 = 2,825 ± 38 g; P 0.40. The liver and heart, however, weighed significantly more in stage 2 (P Keywords: Homeopathy, Poultry production, Agroecology.   Medicamentos homeopáticos em um sistema alternativo de produção de frangos. Resumo Este estudo objetivou avaliar a influência de medicamentos homeopáticos no desempenho e saúde de frangos, em um sistema alternativo semi-intensivo de produção. Dois grupos de 90 frangos Cobb foram randomicamente distribuídos, aos 21 dias de vida, entre 3 diferentes tratamentos: controle, Calcárea carbonica 12cH y Calcarea phosphorica 12 ch, em 2 fases. A medicação foi administrada usando-se uma solução hidroalcoólica (água potável 5%, numa razão de 5 gotas por animal, diariamente durante 28 dias, começando aos 22 dias de vida. Cada fase incluiu 3 blocos, totalizando 6 replicações por tratamento, Cada grupo de tratamento continha 10

  13. Agent Development Toolkits

    CERN Document Server

    Singh, Aarti; Sharma, A K

    2011-01-01

    Development of agents as well as their wide usage requires good underlying infrastructure. Literature indicates scarcity of agent development tools in initial years of research which limited the exploitation of this beneficial technology. However, today a wide variety of tools are available, for developing robust infrastructure. This technical note provides a deep overview of such tools and contrasts features provided by them.

  14. Radiographic scintiscanning agent

    International Nuclear Information System (INIS)

    A new technetium-based scintiscanning agent has been prepared comprising a water soluble sup(99m)Tc-methanehydroxydiphosphonate in combination with a reducing agent selected from stannous, ferrous, chromous and titanous salts. As an additional stabilizer salts and esters of gentisic or ascorbic acids have been used. (E.G.)

  15. Asimovian Adaptive Agents

    CERN Document Server

    Gordon, D F

    2011-01-01

    The goal of this research is to develop agents that are adaptive and predictable and timely. At first blush, these three requirements seem contradictory. For example, adaptation risks introducing undesirable side effects, thereby making agents' behavior less predictable. Furthermore, although formal verification can assist in ensuring behavioral predictability, it is known to be time-consuming. Our solution to the challenge of satisfying all three requirements is the following. Agents have finite-state automaton plans, which are adapted online via evolutionary learning (perturbation) operators. To ensure that critical behavioral constraints are always satisfied, agents' plans are first formally verified. They are then reverified after every adaptation. If reverification concludes that constraints are violated, the plans are repaired. The main objective of this paper is to improve the efficiency of reverification after learning, so that agents have a sufficiently rapid response time. We present two solutions: ...

  16. How do agents represent?

    Science.gov (United States)

    Ryan, Alex

    Representation is inherent to the concept of an agent, but its importance in complex systems has not yet been widely recognised. In this paper I introduce Peirce's theory of signs, which facilitates a definition of representation in general. In summary, representation means that for some agent, a model is used to stand in for another entity in a way that shapes the behaviour of the agent with respect to that entity. Representation in general is then related to the theories of representation that have developed within different disciplines. I compare theories of representation from metaphysics, military theory and systems theory. Additional complications arise in explaining the special case of mental representations, which is the focus of cognitive science. I consider the dominant theory of cognition — that the brain is a representational device — as well as the sceptical anti-representational response. Finally, I argue that representation distinguishes agents from non-representational objects: agents are objects capable of representation.

  17. Hyperthermia and chemotherapy agent

    International Nuclear Information System (INIS)

    The use of chemotherapeutic agents for the treatment of cancer dates back to the late 19th century, but the modern era of chemotherapy drugs was ushered in during the 1940's with the development of the polyfunctional alkylating agent. Since then, numerous classes of drugs have evolved and the combined use of antineoplastic agents with other treatment modalities such as radiation or heat, remains a large relatively unexplored area. This approach, combining local hyperthermia with chemotherapy agents affords a measure of targeting and selective toxicity not previously available for drugs. In this paper, the effects of adriamycin, bleomycin and cis-platinum are examined. The adjuvant use of heat may also reverse the resistance of hypoxic cells noted for some chemotherapy agents

  18. Seleção de hospedeiro alternativo para três espécies de tricogramatídeos neotropicais Selection of factitious hosts for three neotropical trichogrammatid species

    Directory of Open Access Journals (Sweden)

    Nivia da Silva Dias

    2008-11-01

    Full Text Available O objetivo deste trabalho foi avaliar as características biológicas dos parasitóides Trichogrammatoidea annulata, Trichogramma atopovirilia e Trichogramma bruni, criados em hospedeiros alternativos durante diferentes gerações, para selecionar o melhor hospedeiro para a criação massal desses parasitóides. O experimento foi conduzido em delineamento inteiramente ao acaso, em esquema fatorial 3x3 (três hospedeiros - Anagasta kuehniella, Corcyra cephalonica e Sitotroga cerealella - e três gerações - 1ª, 10ª e 28ª. Avaliaram-se: o total de ovos parasitados por fêmea; a longevidade de fêmeas e machos; a duração do período ovo-adulto; a razão sexual; e a viabilidade dos parasitóides. Os parasitóides Trichogrammatoidea annulata e Trichogramma bruni apresentaram melhores resultados em C. cephalonica. Para Trichogramma atopovirilia, o hospedeiro alternativo é C. cephalonica ou A. kuehniella. O hospedeiro S. cerealella foi o menos adequado para as três espécies de parasitóides. Os tricogramatídeos avaliados apresentaram capacidade adaptativa aos hospedeiros alternativos preferenciais, ao longo das gerações.The objective of this work was to assess the biological characteristics of the parasitoids Trichogrammatoidea annulata, Trichogramma atopovirilia e Trichogramma bruni, reared on factitious hosts, through different generations, in order to select the best host for parasitoid mass rearing. The experiment was carried out in a completely randomized design, in a 3x3 factorial arrangement (three hosts - Anagasta kuehniella, Corcyra cephalonica and Sitotroga cerealella - and three generations - 1st, 10th and 28th. Evaluations were made for: the total parasitized eggs by each female; viability; longevity of male and female; duration of the egg-adult period; sexual ratio; and viability of the parasitoids. The parasitoids Trichogrammatoidea annulata and Trichogramma bruni showed better development on C. cephalonica. For Trichogramma

  19. Substratos alternativos e tratamentos pré-germinativos na germinação in vitro de sementes de Pinus taeda L. Alternative substrates and pre-germinative treatments in the in vitro germination of Pinus taeda L. seeds

    Directory of Open Access Journals (Sweden)

    Diego Pascoal Golle

    2010-02-01

    Full Text Available Os objetivos deste trabalho foram desenvolver protocolos para a obtenção de plântulas in vitro de P. taeda, avaliar o uso de substratos alternativos e analisar o efeito de tratamentos pré-germinativos na otimização da germinação. Foram testados tratamentos de desinfestação à base de etanol e hipoclorito de sódio (NaOCl, a influência do fotoperíodo, de tratamentos pré-germinativos e a possibilidade de uso de substratos alternativos (amido de milho, papel-filtro, algodão hidrófilo, vermicultita, ágar-água e adição de carvão ativado ao meio nutritivo na germinação. Foram avaliadas a germinação in vitro e a contaminação fúngica e bacteriana. O melhor tratamento para a desinfestação das sementes foi etanol 70% por 30 s, seguido de imersão em hipoclorito de sódio a 3% por 5 min, no entanto apresentou efeito tóxico. Os substratos alternativos conferem condições físicas adequadas à cultura de tecidos, mas não favorecem a germinação. Contudo, o uso de algodão hidrófilo associado à embebição das sementes por 72 h, na ausência de desinfestação, otimiza a germinação e possibilita a obtenção de plântulas in vitro com baixa contaminação.The aims of this paper were to develop protocols to obtain in vitro seedlings of P. taeda, evaluate the use of alternative substrates as well as analyze the effect of pre-germinative treatments for optimizing germination. Disinfestation treatments using sodium hypochlorite, influence of photoperiod and pre-germinative treatments, and the possibility of using alternative substrates (maize starch, filter paper, hydrophile cotton, vermiculite, agar-water and addition of activated charcoal into the nutritive medium were tested for germination. In vitro germination, fungal and bacterial contamination were evaluated. The best seed disinfestation treatment was ethanol at 70 % for 30 seconds + sodium hypochlorite at 3 % for 5 minutes. However, it caused a toxic effect

  20. PKO: alternative method for isolating mycobacteria from sputum PKO: um método alternativo para o isolamento de micobactérias em amostras de escarro

    Directory of Open Access Journals (Sweden)

    Julia Ignez Salem

    2007-01-01

    Full Text Available We elaborated an alternative culture method, which we denominated PKO (initials in tribute of respect to Petroff, Kudoh and Ogawa, for isolating Mycobacterium tuberculosis from sputum for diagnosis of pulmonary tuberculosis (TB, and to compare its performance with the Swab and Petroff methods. For the technique validation, sputum samples from patients suspected of pulmonary TB cases were examined by acid-fast microscopy (direct and concentrated smear, PKO, Swab and Petroff methods. We found that Petroff and PKO methods have parity in the effectiveness of M. tuberculosis isolation. However, by the PKO method, 65% of isolated strains were detected in a period of £15 days, while by the Petroff method the best detection was in an interval of 16-29 days (71%. In positive smear samples, the average time of PKO isolation is only superior to the one related for Bactec 460TB. In conclusion, the exclusion of the neutralization stage of pH in the PKO reduces the manipulation of the samples, diminishes the execution time of the culture according to the Petroff method and facilitates the qualification of professionals involved in the laboratorial diagnosis of Tuberculosis.Foi elaborado um método de cultivo alternativo, denominado por nós PKO (iniciais referentes à Petroff, Kudoh e Ogawa, para o isolamento do Mycobacterium tuberculosis em amostras de escarro para o diagnóstico da tuberculose pulmonar (TB. Para validação da técnica, amostras de escarro de pacientes suspeitos de TB foram submetidas aos métodos de baciloscopia (direta e pós-concentração, PKO, Swab e Petroff. A análise comparativa entre o método de Petroff e o PKO mostrou paridade de resultados em relação ao isolamento e número de colônias de M. tuberculosis. Porém, pelo método PKO, 65% das cepas isoladas foi detectada em um período £15 dias, enquanto que pelo método de Petroff a melhor detecção ocorreu em um intervalo de 16-29 dias (71%. O tempo médio de isolamento pelo

  1. Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates Biofiltración de compuestos nitrogenados bajo medios de fijación bacteriana alternativos

    Directory of Open Access Journals (Sweden)

    Carlos Carroza

    2012-09-01

    Full Text Available This study compares the behavior of nitrification (NH4+, NO2- and NO3-, and performance, in terms of the surface TAN conversion rate (STR, volumetric TAN conversion rate (VTR and removal percentage of TAN (PTR among three fixation media of nitrifying bacteria (two alternatives (S1, S2 and one commercial (Co. The experiment was performed in two tests of 42 days each. Three isolated biofiltration systems were built for the experience, to which were added media colonized by bacteria as a "seed" to start the process of nitrification. Ammonium chloride (NH4Cl was attached as source of ammonium in reconditioned freshwater, also gradually adding inorganic carbon (HCO3- to maintain moderate water hardness. The average results for both tests indicate that the substrates S1 and S2 show a statistically similar behavior to the substrate Co (P > 0.05 during the first 33 days (until steady state. For the second test in terms of performance, STR values were 0.40, 0.39, 0.39 g TAN m-2 d-1 recorded for S2 and Co respectively; in terms of PRN, values were 92(3 9־/ and 93% for S1, S2 and Co, respectively. Regarding VTR, values of 72.31, 114.94, and 39.02 g TAN m-3 d-1 were recorded for S2 and Co respectively. Statistical analysis provided that for STR and PRN, no significant differences, were found. But for VTR, statistically significant differences between means were evaluated, registering for the S2 media the highest value of VTR.Se compara el comportamiento del proceso de nitrificación (NH4+, NO2- y NO3-, y el rendimiento, en términos de la tasa superficial de conversión de NAT, tasa volumétrica de conversión de NAT y porcentaje de remoción de NAT (PRN entre tres medios de fijación de bacterias nitrificantes, dos alternativos (S1, S2 y uno comercial (Co. La experiencia se realizó en dos pruebas de 42 días cada una. Se construyeron tres sistemas aislados para la experiencia, a los cuales se adicionaron medios colonizados por bacterias a modo de

  2. Métodos alternativos na correção de transtornos oculomotores Alternative methods for the correction of oculomotor disturbances

    Directory of Open Access Journals (Sweden)

    Harley E. A. Bicas

    2003-08-01

    Full Text Available INTRODUÇÃO: O equilíbrio do sistema oculomotor depende de múltiplos fatores, para cujas correções os procedimentos são geralmente indiretos (modificação de respostas musculares, não das causas inervacionais e, em muitos casos (correção de paralisias, dissinergias, nistagmos, insatisfatórios. Métodos para controle específico dos mecanismos de comando não têm sido possíveis, pelas peculiaridades próprias do sistema nervoso central, restando, pois, os de introdução de forças de movimentação ou de contenção sobre o próprio olho. ANÁLISES DE MÉTODOS ALTERNATIVOS: FORÇAS DE MOVIMENTAÇÃO: Entre os métodos com perspectivas de produção de rotações oculares, são revistos os de transposições musculares, com proposta para favorecer a ação abdutora de oblíquos. Referem-se ainda a métodos de aproveitamento de forças acumuladas em mecanismos distensíveis, ao de estimulação elétrica direta sobre músculos, e ao de geração de forças originadas por campos magnéticos (em modelos de construção experimental. FORÇAS DE CONTENÇÃO: Para se contrapor a ações musculares excessivas ou indesejáveis, propõe-se o uso de forças de contenção geradas por meio de fixações distensíveis (do olho à órbita, por campos magnéticos, ou pelo aumento da fricção no movimento ocular rotacional, por maior viscosidade.INTRODUCTION: The balance of the oculomotor system depends on multiple factors, whose corrections are usually based on indirect procedures (modifications of muscular responses but not of the innervational causes and unsatisfactory in many cases (correction of paralysis, dyssynergic movements, nystagmus. Use of methods for the specific control of the innervational command has not been possible because of the peculiarities of the central nervous system. Therefore, the solution remains the application of forces for rotational movements or for their contention directly on the eye itself. ANALYSIS OF

  3. Saúde e educação: cursos alternativos para desenvolvimento do pessoal de enfermagem Health and education: alternative courses for the development of nursing personnel

    Directory of Open Access Journals (Sweden)

    Creusa Guimarães Madeira

    1996-08-01

    Full Text Available Promover atividades educacionais terapêuticas para o pessoal de enfermagem visando a diminuição do stress, a melhoria do relacionamento interpessoal e a busca do auto-conhecimento, são objetivos dos cursos promovidos pelo Departamento de Enfermagem da FCM e Serviço de Enfermagem em Educação Continuada do Hospital das Clínicas da UNICAMP. Através dos cursos: O Hospital e o Relacionamento Humano; Dança e Criatividade; Yoga e Relaxamento Mental, foram ministradas técnicas de respiração, relaxamento, sensibilização e conscientização corporal e de interpretação teatral. A estratégia empregada foi a "vivência grupal", com participação de atendentes, auxiliares e técnicos de enfermagem e enfermeiras, durante o horário de trabalho, em 15 a 20 encontros por curso. Como instrumento desta pesquisa foram utilizados os "depoimentos individuais", escritos pelos participantes, tendo como metodologia a análise de conteúdo. A avaliação demonstrou que a "Vivência" facilitou o relacionamento entre os membros da equipe de trabalho; abriu, espaço para comunicação efetiva; favoreceu o auto-conhecimento; e ajudou na solução de problemas. Ficou evidente a importância da continuidade de cursos alternativos para auxiliar o funcionário na melhoria da relação consigo mesmo, com o outro, com o trabalho e valorizar a sua saúde/aprendizagem.To promote therapeutic educational activities for nursing personnel in order to decrease stress, to improve interpersonal relations and the search for self-knowledge are the objectives of the courses promoted by the Departament of Nursing of FCM and by The Continued Education Nursing Service of the University Hospital of UNICAMP. Respiration, relaxation, body sensibilization and awareness, and theater interpretation techniques were taught in the following courses: The Hospital and Human Relations, Dance and Creativity, Yoga and Mental Relaxation. The estrategy employed was "group experience", with

  4. Potencial de defensivos alternativos para o controle do ácaro-branco em pimenta "Malagueta" Potential of alternative pesticides for control of broad mite on chili pepper "Malagueta"

    Directory of Open Access Journals (Sweden)

    Madelaine Venzon

    2006-06-01

    Full Text Available A ação letal e subletal de defensivos alternativos sobre o ácaro-branco Polyphagotarsonemus latus (Banks foi avaliada em laboratório. Plantas de pimenta "Malagueta" (6 cm de altura foram pulverizadas, nas dosagens recomendadas para hortaliças, com os seguintes produtos: biofertilizante "Supermagro", "Calda Viçosa", calda sulfocálcica, acaricida abamectina e água. Após a pulverização, foram transferidas dez fêmeas de P. latus para cada planta. Seis dias após, avaliou-se o número de ácaros por planta e calculou-se a taxa instantânea de crescimento populacional (r i. A população final de P. latus em plantas tratadas com a calda sulfocálcica, com a "Calda Viçosa" e com o acaricida abamectina foi significativamente menor do que em plantas tratadas com água e com "Supermagro". Foram obtidos valores negativos para a r i de P. latus em plantas tratadas com a calda sulfocálcica (r i = -0,2922 e com a "Calda Viçosa" (r i = -0,0301. Valores positivos para a r i foram obtidos para ácaros em plantas tratadas com "Supermagro" (r i = 0,2373 e com água (r i = 0,1971, indicando aumento da população de P. latus nessas plantas. Não foi possível o cálculo do r i para ácaros em plantas tratadas com abamectina devido a morte de todas as fêmeas no inicio do experimento. A "Calda Viçosa" e a calda sulfocálcica apresentaram potencial de controle para o ácaro branco P. latus em pimenta.Lethal and sublethal effects of alternative pesticides on the broad mite Polyphagotarsonemus latus were evaluated. Chilli pepper plants (6 cm high were sprayed with one of the following treatments: biofertilizer "Supermagro", "Viçosa mixture" (a nutrient amended Bordeaux mixture, lime sulfur, abamectin and water. After spraying, 10 females of P. latus were transferred to each plant. Six days after, the number of mites per plant was counted and the instantaneous rate of increase (r i was evaluated for each treatment. The population of P. latus on plants

  5. Users, Bystanders and Agents

    DEFF Research Database (Denmark)

    Krummheuer, Antonia Lina

    2015-01-01

    Human-agent interaction (HAI), especially in the field of embodied conversational agents (ECA), is mainly construed as dyadic communication between a human user and a virtual agent. This is despite the fact that many application scenarios for future ECAs involve the presence of others. This paper...... the construction of the agent’s identity, and (3) how HAI, as a mediated interaction, is framed by an asymmetric participation framework. The paper concludes by suggesting various participation roles, which may inform development of ECAs....

  6. Agent-Based Optimization

    CERN Document Server

    Jędrzejowicz, Piotr; Kacprzyk, Janusz

    2013-01-01

    This volume presents a collection of original research works by leading specialists focusing on novel and promising approaches in which the multi-agent system paradigm is used to support, enhance or replace traditional approaches to solving difficult optimization problems. The editors have invited several well-known specialists to present their solutions, tools, and models falling under the common denominator of the agent-based optimization. The book consists of eight chapters covering examples of application of the multi-agent paradigm and respective customized tools to solve  difficult optimization problems arising in different areas such as machine learning, scheduling, transportation and, more generally, distributed and cooperative problem solving.

  7. Acción social y educación en valores a través de los medios de comunicación: modelos alternativos de producción informativa de calidad

    OpenAIRE

    Santiago Gallur Santorum

    2013-01-01

    Este artículo pretende exponer cómo un grupo de medios de comunicación con paradigmas alternativos de producción informativa puede lograr la educación en valores y la acción social. El texto que a continuación se presenta corresponde a una pequeña parte de una amplia investigación 1 centrada en la importancia del contexto de violencia en la producción informativa. En ella se comprueba como la selección de los hechos que son difundidos como noticias a través de los valores noticia tradicionale...

  8. Las letras de canciones de pop-rock español como textos poéticos: un modelo alternativo de educación literaria para E.S.O. y bachillerato.

    OpenAIRE

    Gómez Capuz, Juan

    2009-01-01

    En este trabajo intentaremos diseñar un amplio modelo de análisis de textos poéticos, aplicado a las letras de canciones de pop-rock en español. Este modelo alternativo de educación literaria está especialmente dirigido a jóvenes entre 14 y 18 años, con el objeto de que sean capaces de reconocer cierto grado de elaboración poética en las canciones pop de la vida diaria. Los aspectos poéticos estudiados en este artículo, siempre aplicados a letras de pop-rock cantado en español,...

  9. Validação de métodos alternativos qualitativos na detecção de patógenos alimentares Validation of qualitative alternative methods in the detection of food-born pathogens

    OpenAIRE

    Elaine Ibrahim de Freitas; Anderson Almeida de Lemos; Victor Augustus Marin

    2006-01-01

    As Doenças de Origem Alimentar (DOA) são um perigo de grande relevância para a saúde humana e para a economia dos indivíduos, famílias e nações. O risco de disseminação de microrganismos patogênicos vem crescendo continuamente, e programas de controle de qualidade microbiológica são empregados em toda a cadeia de produção alimentar a fim de minimizar o risco de infecção e/ou intoxicação. A utilização de métodos de detecção alternativos de microrganismos é uma das ferramentas que podem ser uti...

  10. La revolución de los desheredados Participación de las redes de medios comunitarios y alternativos en la construcción de políticas de comunicación en Bolivia

    OpenAIRE

    Ramos Martín, Juan

    2015-01-01

    [ES]A partir del desarrollo del análisis de los procesos de policymaking en la construcción de políticas públicas de comunicación y la participación política de las redes de medios comunitarios y alternativos de Bolivia durante el periodo de propuesta, debate y aprobación de la Ley 164 de Telecomunicaciones de 2011, la investigación tiene como propósito el análisis de la inclusión, por parte de estas redes, de elementos de democratización más inclusivos en la regulación y la ampliación de los...

  11. Agent Standards Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The innovation of the work herein proposed is the development of standards for software autonomous agents. These standards are essential to achieve software...

  12. Programming Service Oriented Agents

    OpenAIRE

    Hirsch, Benjamin; Konnerth, Thomas; Burkhardt, Michael; Albayrak, Sahin

    2010-01-01

    This paper introduces a programming language for service-oriented agents. JADL++ combines the ease of use of scripting-languages with a state-of-the-art service oriented approach which allows the seamless integration of web-services. Furthermore, the language includes OWL-based ontologies for semantic descriptions of data and services, thus allowing agents to make intelligent decisions about service calls.

  13. Adrenal imaging agents

    International Nuclear Information System (INIS)

    The goals of this proposal are the development of selenium-containing analogs of the aromatic amino acids as imaging agents for the pancreas and of the adrenal cortex enzyme inhibitors as imaging agents for adrenal pathology. The objects for this year include (a) the synthesis of methylseleno derivatives of phenylalanine and tryptophan, and (b) the preparation and evaluation of radiolabeled iodobenzoyl derivatives of the selenazole and thiazole analogs of metyrapone and SU-9055

  14. Agent amplified communication

    Energy Technology Data Exchange (ETDEWEB)

    Kautz, H.; Selman, B.; Milewski, A. [AT& T Laboratories, Murray Hill, NJ (United States)

    1996-12-31

    We propose an agent-based framework for assisting and simplifying person-to-person communication for information gathering tasks. As an example, we focus on locating experts for any specified topic. In our approach, the informal person-to-person networks that exist within an organization are used to {open_quotes}referral chain{close_quotes} requests for expertise. User-agents help automate this process. The agents generate referrals by analyzing records of e-mail communication patterns. Simulation results show that the higher responsiveness of an agent-based system can be effectively traded for the higher accuracy of a completely manual approach. Furthermore, preliminary experience with a group of users on a prototype system has shown that useful automatic referrals can be found in practice. Our experience with actual users has also shown that privacy concerns are central to the successful deployment of personal agents: an advanced agent-based system will therefore need to reason about issues involving trust and authority.

  15. Bloqueio seletivo dos nervos supraescapular e axilar promove analgesia satisfatória e menor grau de bloqueio motor: comparação com o bloqueio interescalênico El bloqueo selectivo de los nervios supraescapular y axilar promueve una analgesia satisfactoria y un menor grado de bloqueo motor: comparación con el bloqueo interescalénico Selective suprascapular and axillary nerve block provides adequate analgesia and minimal motor block: comparison with interscalene block

    Directory of Open Access Journals (Sweden)

    Patrícia Falcão Pitombo

    2013-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVO: Cirurgias artroscópicas do ombro cursam com intensa dor pós-operatória. Diversas técnicas analgésicas têm sido preconizadas. O objetivo deste estudo foi comparar o bloqueio dos nervos supraescapular e axilar nas cirurgias artroscópicas de ombro com a abordagem interescalênica do plexo braquial. MÉTODO: Sessenta e oito pacientes foram alocados em dois grupos de 34, de acordo com a técnica utilizada: grupo interescalênico (GI e grupo seletivo (GS, sendo ambas as abordagens realizadas com neuroestimulador. No GI, após resposta motora adequada foram injetados 30 mL de levopubivacaína em excesso enantiomérico de 50% a 0,33% com adrenalina 1:200.000. No GS, após resposta motora do nervo supraescapular e axilar, foram injetados 15 mL da mesma substância em cada nervo. Em seguida, realizada anestesia geral. Variáveis avaliadas: tempo para realização dos bloqueios, analgesia, consumo de opioide, bloqueio motor, estabilidade cardiocirculatória, satisfação e aceitabilidade pelo paciente. RESULTADOS: Tempo para execução do bloqueio interescalênico foi significativamente menor que para realização do bloqueio seletivo. Analgesia foi significativamente maior no pós-operatório imediato no GI e no pós-operatório tardio no GS. Consumo de morfina foi significativamente maior na primeira hora no GS. Bloqueio motor foi significativamente menor no GS. Estabilidade cardiocirculatória, satisfação e aceitabilidade da técnica pelo paciente não diferiram entre os grupos. Ocorreu uma falha no GI e duas no GS. CONCLUSÕES: Ambas as técnicas são seguras, eficazes com mesmo grau de satisfação e aceitabilidade. O bloqueio seletivo de ambos os nervos apresentou analgesia satisfatória, com a vantagem de proporcionar bloqueio motor restrito ao ombro.JUSTIFICATIVA Y OBJETIVOS: Las cirugías artroscópicas del hombro cursan con un intenso dolor postoperatorio. Diversas técnicas analgésicas han sido preconizadas

  16. Agent Oriented Programming进展%Advances in Agent Oriented Programming

    Institute of Scientific and Technical Information of China (English)

    王一川; 石纯一

    2002-01-01

    Agent-oriented programming (AOP) is a framework to develop agents, and it aims to link the gap betweentheory and practical in agent research. The core of an AOP framework is its language and semantics. In this paper,we propose the necessary properties which agents should have, and then give a summary and analysis about differentAOP languages based on these properties.

  17. Agents unleashed a public domain look at agent technology

    CERN Document Server

    Wayner, Peter

    1995-01-01

    Agents Unleashed: A Public Domain Look at Agent Technology covers details of building a secure agent realm. The book discusses the technology for creating seamlessly integrated networks that allow programs to move from machine to machine without leaving a trail of havoc; as well as the technical details of how an agent will move through the network, prove its identity, and execute its code without endangering the host. The text also describes the organization of the host's work processing an agent; error messages, bad agent expulsion, and errors in XLISP-agents; and the simulators of errors, f

  18. El agente encubierto

    OpenAIRE

    Anaya Marcos, María del Carmen

    2015-01-01

    [ES] El trabajo versa sobre la figura del agente encubierto. Debemos enmarcar tal medida de investigación dentro del ámbito de la criminalidad organizada. Actualmente, estamos asistiendo a una proliferación de la delincuencia organizada. La sociedad ha evolucionado, y con ella la delincuencia. Fruto de tal evolución fue necesario incluir en nuestra Ley de Enjuiciamiento Criminal medidas extraordinarias de investigación, y una de ellas es el agente encubierto. Se trata de una medida muy polémi...

  19. The PLS agent : agent behavior validation by partial least squares

    OpenAIRE

    Lorscheid, Iris; Meyer, Matthias; Pakur, Sandra; Ringle, Christian

    2014-01-01

    Agent-based modeling is widely applied in the social sciences. However, the validation of agent behavior is challenging and identified as one of the shortcomings in the field. Methods are required to establish empirical links and support the implementation of valid agent models. This paper contributes to this, by introducing the PLS agent concept. This approach shows a way to transfer results about causalities and decision criteria from empirical surveys into an agent-based decision model, th...

  20. Produção de mudas de alface em substrato alternativo com adubação Production of lettuce seedlings using alternative substrates and fertilizer

    Directory of Open Access Journals (Sweden)

    Luiz Antonio Augusto Gomes

    2008-09-01

    Full Text Available Substratos alternativos, além de permitirem a produção de mudas de qualidade, reduzem os custos de produção. Neste trabalho avaliou-se a produção de mudas de alface (Lactuca sativa L. utilizando misturas de casca de arroz carbonizada e húmus de minhoca com diferentes doses de SulPoMag®. O trabalho foi desenvolvido nas instalações da HortiAgro Sementes Ltda, em Ijaci (MG. Utilizou-se o delineamento de blocos casualizados, com cinco tratamentos e quatro repetições, sendo os tratamentos 1: 70% de húmus de minhoca (HM e 30% de casca de arroz carbonizada (CAC, adicionados de 12,2 g de fosfato de Arad (FA por litro da mistura, e tratamentos 2, 3 e 4: com as mesmas quantidades de HM, CAC, e FA, adicionadas, respectivamente, de 2,0; 4,0 e 8,0 g de SulPoMag®. Como testemunha utilizou-se o substrato comercial Bioplant®. Avaliaram-se as características de massa fresca de parte aérea (MFPA e raiz (MFRZ; massa seca de parte aérea (MSPA e raiz (MSRZ; teor de matéria seca de parte aérea (TMSPA e raiz (TMSRZ e condutividade elétrica (CE em dS m-1 dos substratos. O substrato comercial e o tratamento 1 apresentaram maiores valores de MFPA e MSPA. Os outros tratamentos, independentemente das doses de SulPoMag®, não diferiram entre si para MFPA. Para MSPA, o comportamento foi o mesmo, à exceção do tratamento 3, que foi semelhante ao tratamento 1 e ao substrato comercial. O aumento das doses de SulPoMag® resultou em uma elevação da condutividade elétrica para todos os tratamentos de forma linear. A produção de mudas de alface semelhante àquela obtida com o substrato comercial é viável, utilizando-se matéria prima obtida na propriedade. A produção de MFPA foi afetada negativamente pela adição de SulPoMag® ao substrato.Alternative substrates, besides allowing the production of quality seedlings, reduce the production costs. In this work we evaluated the production of lettuce seedlings (Lactuca sativa L. using mixtures of

  1. Trading Agents for Roaming Users

    OpenAIRE

    Boman, Magnus; Bylund, Markus; Espinoza, Fredrik; Danielson, Mats; Lyback, David

    2002-01-01

    Some roaming users need services to manipulate autonomous processes. Trading agents running on agent trade servers are used as a case in point. We present a solution that provides the agent owners with means to upkeeping their desktop environment, and maintaining their agent trade server processes, via a briefcase service.

  2. Software Agent Techniques in Design

    DEFF Research Database (Denmark)

    Hartvig, Susanne C

    1998-01-01

    This paper briefly presents studies of software agent techniques and outline aspects of these which can be applied in design agents in integrated civil engineering design environments.......This paper briefly presents studies of software agent techniques and outline aspects of these which can be applied in design agents in integrated civil engineering design environments....

  3. 13 CFR 107.1620 - Functions of agents, including Central Registration Agent, Selling Agent and Fiscal Agent.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Functions of agents, including Central Registration Agent, Selling Agent and Fiscal Agent. 107.1620 Section 107.1620 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION SMALL BUSINESS INVESTMENT COMPANIES SBA Financial Assistance...

  4. Programming multi-agent systems

    NARCIS (Netherlands)

    Dastani, Mehdi

    2015-01-01

    With the significant advances in the area of autonomous agents and multi-agent systems in the last decade, promising technologies for the development and engineering of multi-agent systems have emerged. The result is a variety of agent-oriented programming languages, development frameworks, executio

  5. Polar S810 como recurso alternativo ao eletrocardiograma no teste de exercício de 4 segundos Polar S810 como recurso alternativo al electrocardiograma en la prueba de ejercicio de 4 segundos Polar S810 as an alternative resource to the use of the electrocardiogram in the 4-second exercise test

    Directory of Open Access Journals (Sweden)

    Alan Santos Pimentel

    2010-05-01

    Full Text Available FUNDAMENTO: O teste de exercício de 4 segundos (T4s avalia o tônus vagal cardíaco durante o transiente inicial da frequência cardíaca (FC, em exercício dinâmico súbito, por meio da identificação do índice vagal cardíaco (IVC obtido a partir do eletrocardiograma (ECG. OBJETIVO: Testar a utilização do monitor de frequência cardíaca (MFC Polar S810 como recurso alternativo ao ECG na aplicação do T4s. MÉTODOS: Neste trabalho, 49 indivíduos do sexo masculino (25 ± 20 anos, 176 ± 12 cm, 74 ± 6 kg realizaram o T4s. Os intervalos RR foram registrados simultaneamente por ECG e MFC. Calcularam-se média e desvio padrão do último intervalo RR do período pré-exercício ou o primeiro do período de exercício, aquele que for mais longo (RRB, do mais curto intervalo RR do período de exercício (RRC e do IVC obtidos por ECG e MFC. Utilizou-se o teste t de Student para amostras dependentes (p FUNDAMENTO: El test de ejercicio de 4 segundos (T4s evalúa el tono vagal cardíaco durante el transiente inicial de la frecuencia cardíaca (FC, en ejercicio dinámico súbito, por medio de la identificación del índice vagal cardíaco (IVC obtenido a partir del electrocardiograma (ECG. OBJETIVO: Probar la utilización del monitor de frecuencia cardiaca (MFC Polar S810 como recurso alternativo al ECG en la aplicación del T4s. MÉTODOS: En este trabajo, 49 individuos del sexo masculino (25 ± 20 años, 176 ±12 cm, 74 ± 6 kg llevaron el T4s. Los intervalos RR fueron registrados simultáneamente por ECG y MFC. Se calcularon el promedio y la desviación estándar del último intervalo RR del período pre ejercicio o el primer del período de ejercicio, aquel que fuera más largo (RRB, del más corto intervalo RR del período de ejercicio (RRC y del IVC obtenidos por ECG y MFC. Se utilizó la prueba t de Student para muestras dependientes (P BACKGROUND: The 4-second exercise test (T4s evaluates the cardiac vagal tone during the initial heart

  6. SECOND BUYING AGENT

    CERN Multimedia

    SPL - SERVICES ACHATS

    2000-01-01

    Last year the buying agent LOGITRADE started operations on the CERN site, processing purchasing requests for well-defined families of products up to a certain value. It was planned from the outset that a second buying agent would be brought in to handle the remaining product families. So, according to that plan, the company CHARLES KENDALL will be commencing operations at CERN on 8 May 2000 in Building 73, 1st floor, offices 31 and 35 (phone and fax numbers to be announced).Each buying agent will have its own specific list of product families and will handle purchasing requests up to 10'000 CHF.Whenever possible they will provide the requested supplies at a price (including the cost of their own services) which must be equivalent to or lower than the price mentioned on the purchasing request, changing the supplier if necessary. If a lower price cannot be obtained, agents will provide the necessary administrative support free of charge.To ensure that all orders are processed in the best possible conditions, us...

  7. Radioactive diagnostic agent

    International Nuclear Information System (INIS)

    A dispersion of denatured aggregates of serum albumin to which tin is attached is prepared and lyophilized. A mixture of polycarboxylic acid and a disaccharide or monosaccharide is included in the dispersion in sufficient amount to reduce degradation during lyophilization and aging. The dispersion is suitable for radioactive labelling and use as a diagnostic agent

  8. Developing Enculturated Agents

    DEFF Research Database (Denmark)

    Rehm, Matthias

    Embodied Conversational Agents (ECAs) are complex multimodal systems with rich verbal and nonverbal repertoires. There human-like appearance raises severe expectations regarding natural communicative behaviors on the side of the user. But what is regarded as “natural” is to a large degree dependent...

  9. Biomimetic Emotional Learning Agents

    OpenAIRE

    Kenyon, Samuel H.

    2005-01-01

    This extended abstract proposes a type of AI agent comprised of: an autonomous real-time control system, low-level emotional learning (including a simple knowledge base that links homeostatic/innate drives to sensory perception states), and a novel sliding-priority drive motivation mechanism. Learning occurs in both phylogenetic and ontogenetic training.

  10. Agents of Change

    DEFF Research Database (Denmark)

    Hansen, Jens Aage; Lehmann, Martin

    2004-01-01

    at large, it emphasises universities as key change agents and providers in new learning, including tools such as project based and problem oriented learning (PBL) as well as information and communication technology (ICT); as providers of competent and motivated graduates to fill key positions in society...

  11. The need for agents

    DEFF Research Database (Denmark)

    Abolfazlian, Ali Reza Kian

    1996-01-01

    I denne artikel arbejder vi med begrebet Intelligent Software Agents (ISAs), som autonomous, social, reactive, proactive og subservient computer systemer. Baseret på socialt psykologiske argumenter viser jeg endvidere, hvordan både den menneskelige natur og det teknologiske stadium, som mennesket...

  12. Build Autonomic Agents with ABLE

    Institute of Scientific and Technical Information of China (English)

    吴吉义

    2007-01-01

    The IBM Agent Building and Learning Environment(ABLE) provides a lightweight Java~(TM) agent frame- work,a comprehensive JavaBeansTM library of intelligent software components,a set of development and test tools, and an agent platform.After the introduction to ABLE,classes and interfaces in the ABLE agent framework were put forward.At last an autonomic agent that is an ABLE-based architecture for incrementally building autonomic systems was discussed.

  13. Controle da antracnose na pós-colheita de bananas-'prata' com produtos alternativos aos agrotóxicos convencionais Postharvest control of antracnose in 'prata' bananas with alternatives products to conventional pesticides

    Directory of Open Access Journals (Sweden)

    Ricardo José Zimmermann de Negreiros

    2013-03-01

    Full Text Available Produtos alternativos aos agrotóxicos convencionais foram avaliados no controle da antracnose causada por Colletotrichum musae em pós-colheita de bananas 'Prata' [Musa spp. (AAB]. Foram utilizados buquês com três frutos, com diâmetro médio de 32 mm a 36 mm, no estádio pré-climatérico, com coloração de casca totalmente verde. Os frutos foram pulverizados com uma suspensão de conídios de C. musae, na concentração de 2,5x10(5 conídios/mL e mantidos em câmara úmida a 25 ºC, por 24 horas. Após esse período, foram pulverizados com as caldas dos produtos alternativos extrato cítrico 'Biogermex', óleo de nim 'Organic Neem' e óleo de alho 'Probinatu', na concentração de 10,0 mL/L, óleo de pimenta-longa e óleo de cravo-da-índia na concentração de 5,0 mL/L e quitosana na concentração de 10,0 mg/mL, além do fungicida Tectoï SC (tiabendazol na concentração de 0,65 mL/L. Água destilada foi utilizada como tratamento-testemunha. Os frutos tratados com quitosana, óleo de nim e óleo de alho tiveram a severidade da doença reduzida. O óleo de alho foi o produto mais eficiente, com redução também da incidência da doença. A qualidade dos frutos não foi depreciada por nenhum dos tratamentos alternativos nas concentrações utilizadas.Alternatives products to conventional pesticides in the control of anthracnose caused by Colletotrichum musae after harvest of 'Prata' banana [Musa spp. (AAB] were evaluated. Fruits with an average diameter of 32-36 mm were selected at the pre-climacteric stage, with a peel color index of 1 (totally green peel. Hands were subdivided into clusters of three fruits. The fruits were sprayed with a conidial suspension of C. musae at a concentration of 2.5 x 10(5 conidia/mL and were kept in a moist chamber at 25°C for 24 hours. After this period, fruits were sprayed with the alternative products 'Biogermex' citric extract, 'Organic Neem' oil and 'Probinatu' garlic oil at a concentration of 10.0 m

  14. Sistemas suplementares e alternativos de comunicação nas habilidades expressivas de um aluno com paralisia cerebral Augmentative and alternative systems in the expressive abilities of a cerebral palsy student

    Directory of Open Access Journals (Sweden)

    Débora Deliberato

    2011-08-01

    Full Text Available O objetivo desta pesquisa foi descrever o uso do sistema de comunicação suplementar e alternativo de um aluno com paralisia cerebral submetido à intervenção. Participou desta investigação um aluno com paralisia cerebral de 10 anos de idade, gênero masculino, que frequentava classe especial para deficientes físicos em uma escola estadual de uma cidade do interior de São Paulo. As atividades programadas foram realizadas duas vezes por semana, durante dois anos, em um Laboratório de Educação Especial de uma Universidade pública. Todas as fitas gravadas descrevendo as atividades desenvolvidas nos atendimentos efetivados durante o processo de avaliação e implementação do recurso de comunicação suplementar e alternativo foram assistidas e descritas, em um protocolo especifico. Com base nas informações dos protocolos, foram selecionadas as sessões com intervalo maior que 20 dias e que continham atividades envolvendo o tabuleiro de comunicação, com o tempo igual ou superior a 20 minutos, durante o primeiro ano da intervenção. As sessões escolhidas foram transcritas na íntegra e, após análise do texto obtido, foram estabelecidas as seguintes categorias: o sistema gráfico auxiliou o aluno, na emissão de estrutura vertical (56%, associado à modalidade oral (14% e à modalidade não oral verbal e não verbal (30%, enquanto o uso do sistema gráfico, em conjunto com outras modalidades, colaborou na ampliação dos enunciados e na possibilidade de o aluno ser compreendido na sua intenção. O emprego de sistemas de comunicação suplementar e alternativo proporcionou ao aluno a ampliação de situações dialógicas efetivas, durante as atividades realizadas na intervenção fonoaudiológica.The objective of this research was to describe the use of an augmentative and alternative system for a student with cerebral palsy during intervention. A 10-year-old male student with cerebral palsy participated in this investigation. He

  15. Germinação de Aechmea nudicaulis (L. Griseb. (Bromeliaceae em diferentes substratos alternativos ao pó de xaxim = Germination of Aechmea nudicaulis (L. Griseb. (Bromeliaceae in different substracts as alternatives to Dicksonia sellowiana Hook

    Directory of Open Access Journals (Sweden)

    Adilson Anacleto

    2008-01-01

    Full Text Available Avaliou-se a germinação das sementes de Aechmea nudicaulis (L. Griseb. (Bromeliaceae. As tentativas de produção desta espécie, a partir de sementes, têm ocorrido de forma empírica, utilizando-se substrato à base de pó de xaxim (Dicksonia sellowiana Hook., que tem restrições de uso, por estar ameaçada de extinção. Foram testados cinco tipos alternativos de substratos de fácil acessibilidade: húmus de minhoca, areia, fibra de casca de coco, serapilheira e Plantmax®. O experimento foi realizado em delineamento inteiramente casualizado, com quatro repetições e 50 sementes por unidade experimental, àtemperatura ambiente, em viveiro rústico, coberto com sombrite (70%. Leituras semanais foram efetuadas, durante 70 dias. A melhor performance, como substituto alternativo, foi a da serapilheira, que apresentou valores de germinação de 79,5% e sobrevivência de 97%,estatisticamente similares aos obtidos com xaxim (78%; 94,75%; Tukey, p For this study, the germination of Aechmea nudicaulis (L. Griseb. (Bromeliaceae was evaluated. Production attempts from seeds for this species have taken place in an empirical form, using substratebased on xaxim (Dicksonia sellowiana Hook. powder, the use of which is currently restricted, as it is an endangered species. Five easily accessible alternative substratum were tested: worm humus, sand, coconut shell fiber, forest litter, and Plantmax®. The experiment wasconducted using a completely randomized design, with four replications and 50 seeds per experimental unit, at room temperature in a rustic nursery covered with 70% shade cloth. Weekly readings were performed during 70 days. The best alternative as a substitute toxaxim was forest litter, due to its germinability of 79.5% and survival rates of 97%, significantly similar to xaxim (78%; 94.75%; Tukey p < 0,05. Additionally, this product features positive characteristics such as high availability, low cost, and easy recycling.

  16. Evaluation of alternative containers to determining the working width of fertilizer spreaders Coletores alternativos para a determinação da largura de trabalho de distribuidores de fertilizantes sólidos a lanço

    Directory of Open Access Journals (Sweden)

    Marcelo A. Primo

    2008-09-01

    Full Text Available Farmers have difficult of determining the evenness of transverse distribution and the working width, due the tests with this aim require equipments and complex methodologies. So, this study evaluates some alternative containers with the aim to allow a more accessible adjustment of the full width of the solid fertilizer spreaders. Four different containers were tested: i standard container constructed in accordance with ISO 5690/1; ii container of polyethylene (plastic trays with screen shading to prevent the ricochet of material; iii containers composed by boxes of long-life milk, and iv containers composed by flowerpots (number 3.5. Also, three different spreaders were used for the tests. Alternative containers showed greater retention of particles than the standardized containers. The full width of work obtained for the coefficients of variation of 12.5; 15; 17.5 and 20%, ranged due the containers in the different pathways. The flowerpots of polyethylene showed similar results to the standardized containers. The heights of the containers were more important for its efficiency than its area of collection.Os ensaios de largura de trabalho e uniformidade de distribuição são de difícil execução para o agricultor por exigirem equipamentos, recursos e métodos complexos. Portanto, este trabalho teve como objetivo avaliar coletores alternativos para tornar mais acessível a regulagem e a avaliação de distribuidores de fertilizantes sólidos a lanço. Foram utilizados quatro diferentes conjuntos de coletores: i coletores construídos segundo a norma ISO 5690/1; ii coletores de polietileno (bandejas plásticas com tela de sombreamento para evitar o ricochete de material; iii coletores formados por caixas de leite longa vida, e iv coletores formados por vasos de polietileno (número 3,5. Também foram utilizados três diferentes distribuidores para as avaliações. Os coletores alternativos apresentaram maior retenção de partículas que os

  17. Avaliação de materiais alternativos em substituição à maravalha como cama de aviário Alternative material to replace wood shavings as broiler litter

    Directory of Open Access Journals (Sweden)

    Valdir Silveira de Avila

    2008-02-01

    Full Text Available Com o objetivo de testar materiais alternativos para cama de aviário na criação de frangos de corte, foram alojados seis lotes consecutivos, cada um contendo 5.600 aves, apenas fêmeas, distribuídas em 35 boxes. Os tratamentos consistiram de sete tipos de material para cama (maravalha; casca de arroz; sabugo de milho triturado; capim-cameron picado; palhada de soja picada; resto da cultura do milho picado; e serragem, cada um com cinco repetições. Avaliaram-se nas aves o peso corporal médio e o consumo médio de ração e, nas camas, os teores de N, Ca, P e pH. Observaram-se ainda a presença de salmonela, a contagem de oocistos de eimeria na cama e o escore de lesões no intestino das aves ao abate. A utilização dos materiais alternativos avaliados como cama de aviário, por seis lotes consecutivos, como alternativas à maravalha não prejudicou o desempenho de frangos de corte. Esses materiais, após o descarte, por apresentarem valor em minerais superior ao da maravalha, podem ser utilizados na adubação de culturas.Aiming to evaluate alternative materials to be used as broiler litter reutilization, six consecutive lots of 5,600 female broilers were allocated to 35 pens. The treatments consisted of seven types of litter materials: wood shavings, rice husk, ground corncob, chopped camerongrass, chopped soybean straw, chopped corn stalk and sawdust, each one with five replications. In the birds, it was evaluated the average body weight, feed consumption and in the litter, it was evaluated the contents of N, Ca, P and pH. The presence of salmoella, the eimeria oocists counting in the litter, and the gut birds lesions score at slaughter were also observed. The use of alternative materials evaluated as litter, per six concecutive lots, as a alternative for wood shavings did no prejudice the performance of broilers. These materials, by presenting mineral values higher than wood shavings, after discarding, could be used as culture

  18. Actions and Agents

    OpenAIRE

    Alonso, E.

    2014-01-01

    In this chapter the notion of agency in AI is presented..It has been argued that in order to behave rationally in prevalent software applications artificial entities would have to be autonomous and adaptive. Besides, rather than working with single, isolated systems the new trend in AI would need to focus on inherently social entities in the form of multi-agent systems. The chapter begins by introducing the notion of action in traditional AI systems, deliberative and reactive. Next, the i...

  19. Towards Soft Computing Agents

    Czech Academy of Sciences Publication Activity Database

    Neruda, Roman; Krušina, Pavel; Petrová, Zuzana

    2000-01-01

    Roč. 10, č. 5 (2000), s. 859-868. ISSN 1210-0552. [SOFSEM 2000 Workshop on Soft Computing. Milovy, 27.11.2000-28.11.2000] R&D Projects: GA ČR GA201/00/1489; GA ČR GA201/99/P057 Institutional research plan: AV0Z1030915 Keywords : hybrid systems * intelligent agents Subject RIV: BA - General Mathematics

  20. Sunscreening Agents: A Review

    OpenAIRE

    Latha, M. S.; Martis, Jacintha; Shobha, V; Sham Shinde, Rutuja; Bangera, Sudhakar; Krishnankutty, Binny; Bellary, Shantala; Varughese, Sunoj; Rao, Prabhakar; B R Naveen Kumar

    2013-01-01

    The increasing incidence of skin cancers and photodamaging effects caused by ultraviolet radiation has increased the use of sunscreening agents, which have shown beneficial effects in reducing the symptoms and reoccurrence of these problems. Many sunscreen compounds are in use, but their safety and efficacy are still in question. Efficacy is measured through indices, such as sun protection factor, persistent pigment darkening protection factor, and COLIPA guidelines. The United States Food an...

  1. Perioperative allergy: uncommon agents.

    Science.gov (United States)

    Caimmi, S; Caimmi, D; Cardinale, F; Indinnimeo, L; Crisafulli, G; Peroni, D G; Marseglia, G L

    2011-01-01

    Anesthesia may often be considered as a high-risk procedure and anaphylaxis remains a major cause of concern for anesthetists who routinely administer many potentially allergenic agents. Neuromuscular blocking agents, latex and antibiotics are the substances involved in most of the reported reactions. Besides these three agents, a wide variety of substances may cause an anaphylactic reaction during anesthesia. Basically all the administered drugs or substances may be potential causes of anaphylaxis. Among them, those reported the most in literature include hypnotics, opioids, local anesthetics, colloids, dye, Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), Iodinated Contrast Media (ICM), antiseptics, aprotinin, ethylene oxyde and formaldehyde, and protamine and heparins. No premedication can effectively prevent an allergic reaction and a systematic preoperative screening is not justified for all patients; nevertheless, an allergy specialist should evaluate those patients with a history of anesthesia-related allergy. Patients must be fully informed of investigation results, and advised to provide a detailed report prior to future anesthesia. PMID:22014927

  2. Advanced scale conditioning agents

    International Nuclear Information System (INIS)

    A technical description of Advanced Scale Conditioning Agents (ASCA) technology was published in the May-June 2003 edition of the Nuclear Plant Journal. That article described the development of programs of advanced scale conditioning agents and specific types to maintain the secondary side of steam generators within a pressurized water reactor free of deposited corrosion products and corrosion-inducing contaminants to ensure their long-term operation. This article describes the first two plant applications of advanced scale conditioning agents implemented at Southern Nuclear Operating Company's Vogtle Units 1 and 2 during their 2002 scheduled outages to minimize tube degradation and maintain full power operation using the most effective techniques while minimizing outage costs. The goal was to remove three to four fuel cycles of deposits from each steam generator so that after future chemical cleaning activities, ASCAs could be used to maintain the cleanliness of the steam generators without the need for additional chemical cleaning efforts. The goal was achieved as well as several other benefits that resulted in cost savings to the plant

  3. SAM : Semantic Agent Model for SWRL rule-based agents

    OpenAIRE

    Subercaze, Julien; Maret, Pierre

    2010-01-01

    International audience SemanticWeb technologies are part of multi-agent engineering, especially regarding knowledge base support. Recent advances in the field of logic for the semantic web enable a new range of applications. Among them, programming agents based on semantic rules is a promising field. In this paper we present a semantic agent model that allows SWRL programming of agents. Our approach, based on the extended finite state machine concept, results in a three layers architecture...

  4. Tabela de vida de fertilidade de três espécies neotropicais de Trichogrammatidae em ovos de hospedeiros alternativos como critério de seleção hospedeira Fertility life table of three neotropical species of Trichogrammatidae on factitious hosts as a criterion for selection of hosts

    Directory of Open Access Journals (Sweden)

    Nivia da Silva Dias

    2010-03-01

    Full Text Available Tabela de vida de fertilidade de três espécies neotropicais de Trichogrammatidae em ovos de hospedeiros alternativos como critério de seleção hospedeira. O objetivo deste trabalho foi selecionar o hospedeiro alternativo que permita o melhor desenvolvimento das três espécies neotropicais de tricogramatídeos, Trichogramma atopovirilia Oatman & Platner, 1983; Trichogramma bruni Nagaraja, 1983 e Trichogrammatoidea annulata De Santis, 1972, utilizando-se como parâmetro comparativo as tabelas de vida de fertilidade nos respectivos hospedeiros. Foram estimados a duração média de uma geração (T, taxa líquida de reprodução (Ro, razão infinitesimal (r m e a razão finita de aumento (λ. A tabela de vida de fertilidade pode ser utilizada para selecionar o hospedeiro alternativo mais adequado para as espécies de tricogramatídeos. Corcyra cephalonica (Stainton, 1865 (Lepidoptera, Pyralidae foi o hospedeiro alternativo mais adequado para criação de T. annulata e de T. bruni, enquanto que para T. atopovirilia, Anagasta kuehniella (Zeller, 1879 (Lepidoptera, Pyralidae e/ou C. cephalonica foram os hospedeiros mais adequados. Sitotroga cerealella (Olivier, 1819 (Lepidoptera, Gelechiidae apresentou baixa capacidade de aumento populacional para as três espécies de parasitóides, sendo, portanto, uma espécie inadequada como hospedeiro alternativo para as mesmas.The objective of this work was to select the factitious host that permit the best development of three neotropical Trichogrammatidae species, Trichogramma atopovirilia Oatman & Platner, 1983; Trichogramma bruni Nagaraja, 1983, and Trichogrammatoidea annulata De Santis, 1972, using the fertility life table on their respective hosts as a comparative parameter. Mean generation time (T, net reproductive rate (Ro, intrinsic rate of natural increase (r m and the finite rate of increase (λ were estimated. A fertility life table is useful to select the most adequate factitious hosts for the

  5. Peripheral Neuropathy and Agent Orange

    Science.gov (United States)

    ... Enter ZIP code here Peripheral Neuropathy and Agent Orange VA presumes Veterans' early-onset peripheral neuropathy is related to their exposure to Agent Orange or other herbicides during service when the disease ...

  6. Agents Play Mix-game

    CERN Document Server

    Gou, C

    2005-01-01

    In mix-game which is an extension of minority game, there are two groups of agents; group1 plays the majority game, but the group2 plays the minority game. This paper studies the change of the average winnings of agents and volatilities vs. the change of mixture of agents in mix-game model. It finds that the correlations between the average winnings of agents and the mean of local volatilities are different with different combinations of agent memory length when the proportion of agents in group 1 increases. This study result suggests that memory length of agents in group1 be smaller than that of agent in group2 when mix-game model is used to simulate the financial markets.

  7. The Power Trading Agent Competition

    OpenAIRE

    Ketter, W.; Collins, J.; REDDY, P; Flath, C.

    2011-01-01

    This is the specification for the Power Trading Agent Competition for 2011 (Power TAC 2011). Agents are simulations of electrical power brokers, who must compete with each other for both power production and consumption, and manage their portfolios.

  8. Mediating Performance Through Virtual Agents

    OpenAIRE

    Giannachi, Gabriella; Gillies, Marco; Kaye, Nick; Swapp, David

    2009-01-01

    This paper presents the process of creation of virtual agents used in a virtual reality performance. The performance aimed to investigate how drama and performance could inform the creation of virtual agents and also how virtual reality could raise questions for drama and performance. The virtual agents were based on the performance of 2 actors. This paper describes the process of preparing the actors, capturing their performances and transferring them to the virtual agents. A second set of a...

  9. Erythropoietic Agents and the Elderly

    OpenAIRE

    Agarwal, Neeraj; Prchal, Josef T.

    2008-01-01

    Erythropoietin is a peptide hormone that stimulates erythropoiesis. There are several agents in clinical use and in development, which either act as ligands for the cell surface receptors of erythropoietin or promote erythropoietin production that stimulates erythropoiesis. These are known as erythropoietic agents. The agents already in use include epoetin alfa, epoetin beta, and darbepoetin alfa. Newer agents stimulating erythropoiesis (such as continuous erythropoietin receptor activator (C...

  10. Métodos de alimentação alternativos para recém-nascidos prematuros Métodos de alimentación alternativa para recién-nacidos prematuros Alternative feeding methods for premature newborn infants

    Directory of Open Access Journals (Sweden)

    Claudia Peyres Lopez

    2012-06-01

    Full Text Available OBJETIVO: Apresentar revisão de literatura sobre o uso do copo/xícara como método alternativo de alimentação para recém-nascidos prematuros e verificar se há consenso sobre sua indicação para essa população. FONTES DE DADOS: Revisão de literatura narrativa, tendo sido selecionados artigos nas bases de dados Medline, Lilacs, SciELO e Cochrane, independentemente do ano, usando descritores específicos: alimentação artificial, recém-nascido prematuro, aleitamento materno, métodos de alimentação. SÍNTESE DOS DADOS: Apesar de alguns estudos afirmarem que o método do copo/xícara é eficaz e seguro para alimentar recém-nascidos pré-termo e a termo, tais estudos não avaliam de forma objetiva o efeito do método sobre a deglutição desses pacientes. CONCLUSÕES: Verificou-se não haver consenso na literatura quanto à complementação da alimentação de recém-nascidos prematuros por meio do copo/xícara. Estudos controlados devem ser realizados com a finalidade de rever riscos e benefícios do uso de métodos alternativos na alimentação do recém-nascido prematuro.OBJETIVO: Presentar revisión de literatura sobre el uso de vaso/taza como método alternativo de alimentación para recién-nacidos prematuros y verificar si hay consenso sobre su indicación para esta población. FUENTES DE DATOS: Revisión de literatura narrativa, habiendo sido seleccionados artículos en las bases de datos Medline, Lilacs, SciELO y Cochrane, independientemente del año, usando descriptores específicos: alimentación artificial, recién-nacido prematuro, lactancia materna, métodos de alimentación. SÍNTESIS DE LOS DATOS: Aunque algunos estudios afirmen que el método vaso/taza es eficaz y seguro para alimentar a recién-nacidos pre-término y a término, tales estudios no evalúan de modo objetivo el efecto del método sobre la deglución de estos pacientes. CONCLUSIONES: Se verificó que no hay consenso en la literatura respecto a la

  11. Ocupação, bem-estar e satisfação de vida: a experiência de um modelo alternativo de estágio em terapia ocupacional na Austrália

    Directory of Open Access Journals (Sweden)

    Luzia Iara Pfeifer

    2012-06-01

    Full Text Available Apresenta-se um modelo alternativo de estágio em terapia ocupacional desenvolvido na Deakin University - Austrália, denominado Ocupação, bem-estar e satisfação de vida - Occupation, wellness and life-satisfaction (OWLS. O OWLS oferece, aos estudantes, a oportunidade de atuação em contextos não tradicionais, permitindo um aprendizado estratégico em ambientes não clínicos, incluindo o trabalho com outros profissionais não-terapeutas ocupacionais e com diferentes culturas de trabalho e práticas, em resposta a lacunas identificadas na comunidade. Favorece oportunidades para desenvolver habilidades, tais como: a promoção da saúde, avaliação e educação em saúde e intervenção em escolas, melhorando, assim, a saúde e o bem-estar da comunidade. O programa tem contribuído para o desenvolvimento de novos projetos, com resultados positivos alcançados pelos estudantes, representando uma importante estratégia de ensino para capacitação do profissional de terapia ocupacional, ampliando, assim, a área de atuação.

  12. Acción social y educación en valores a través de los medios de comunicación: modelos alternativos de producción informativa de calidad

    Directory of Open Access Journals (Sweden)

    Santiago Gallur Santorum

    2013-05-01

    Full Text Available Este artículo pretende exponer cómo un grupo de medios de comunicación con paradigmas alternativos de producción informativa puede lograr la educación en valores y la acción social. El texto que a continuación se presenta corresponde a una pequeña parte de una amplia investigación 1 centrada en la importancia del contexto de violencia en la producción informativa. En ella se comprueba como la selección de los hechos que son difundidos como noticias a través de los valores noticia tradicionales es sustituida en los medios de comunicación no convencionales por una forma alternativa, en la cobertura de dos situaciones de violencia extrema concretas: el narcotráfico en México y el feminicidio de Ciudad Juárez. Esto, a la vez, sienta un ejemplo a las nuevas generaciones, sirviendo como un claro compromiso con la educación en valores y la acción social, y más aun teniendo en cuenta que los medios tradicionales han sido ampliamente cuestionados porque algunas de sus prácticas profesionales (sobre todo el sensacionalismo sientan penosos ejemplos para las nuevas generaciones.

  13. Aplicación del paradigma alternativo a un estudio de usuarios en el área de la información en Ciencias Sociales en el Uruguay: un aporte metodológico

    Directory of Open Access Journals (Sweden)

    María Cristina Pérez, Martha Sabelli

    2013-11-01

    Full Text Available se presenta una síntesis teórico-metodológica de la investigación sobre necesidades y comportamientos de uso de información de los especialistas del área Ciencias Sociales, aplicada como primera etapa del estudio internacional de los usuarios reales y potenciales de la Red IDIN. Se enmarca en el paradigma alternativo de los Estudios de Usuarios, ubicando al usuario en tiempo y espacio, analizando su comportamiento en relación a canales, tipos de información, fuentes, tecnologías en diversos contextos. Mediante la Encuesta con entrevista y aplicando la técnica de “incidente crítico”, el usuario puede describir individualmente y desde su percepción sus propias experiencias reales en relación con la información. Los resultados obtenidos, a través de un análisis cuantitativo y cualitativo, son insumo básico para el diseño de productos y servicios de “valor agregado”.

  14. Cultural Differentiation of Negotiating Agents

    NARCIS (Netherlands)

    Hofstede, G.J.; Jonker, C.M.; Verwaart, D.

    2012-01-01

    Negotiations proceed differently across cultures. For realistic modeling of agents in multicultural negotiations, the agents must display culturally differentiated behavior. This paper presents an agent-based simulation model that tackles these challenges, based on Hofstede’s model of national cultu

  15. Cultural differentiation of negotiating agents

    NARCIS (Netherlands)

    Hofstede, G.J.; Jonker, C.M.; Verwaart, T.

    2010-01-01

    Negotiations proceed differently across cultures. For realistic modeling of agents in multicultural negotiations, the agents must display culturally differentiated behavior. This paper presents an agent-based simulation model that tackles these challenges, based on Hofstede’s model of national cultu

  16. Collaborating with Autonomous Agents

    Science.gov (United States)

    Trujillo, Anna C.; Cross, Charles D.; Fan, Henry; Hempley, Lucas E.; Motter, Mark A.; Neilan, James H.; Qualls, Garry D.; Rothhaar, Paul M.; Tran, Loc D.; Allen, B. Danette

    2015-01-01

    With the anticipated increase of small unmanned aircraft systems (sUAS) entering into the National Airspace System, it is highly likely that vehicle operators will be teaming with fleets of small autonomous vehicles. The small vehicles may consist of sUAS, which are 55 pounds or less that typically will y at altitudes 400 feet and below, and small ground vehicles typically operating in buildings or defined small campuses. Typically, the vehicle operators are not concerned with manual control of the vehicle; instead they are concerned with the overall mission. In order for this vision of high-level mission operators working with fleets of vehicles to come to fruition, many human factors related challenges must be investigated and solved. First, the interface between the human operator and the autonomous agent must be at a level that the operator needs and the agents can understand. This paper details the natural language human factors e orts that NASA Langley's Autonomy Incubator is focusing on. In particular these e orts focus on allowing the operator to interact with the system using speech and gestures rather than a mouse and keyboard. With this ability of the system to understand both speech and gestures, operators not familiar with the vehicle dynamics will be able to easily plan, initiate, and change missions using a language familiar to them rather than having to learn and converse in the vehicle's language. This will foster better teaming between the operator and the autonomous agent which will help lower workload, increase situation awareness, and improve performance of the system as a whole.

  17. Agentes de información Information Agents

    Directory of Open Access Journals (Sweden)

    Alfonso López Yepes

    2005-12-01

    Full Text Available Este artículo realiza un repaso sobre las tipologías de agentes de información y describe aspectos como movilidad, racionalidad y adaptatividad, y el ajuste final de estos conceptos a entornos distribuidos como Internet, donde este tipo de agentes tienen un amplio grado de aplicación. Asimismo, se propone una arquitectura de agentes para un sistema multiagente de recuperación de información donde se aplica un paradigma documental basado en el concepto de ciclo documental.This article summarizes the main information agent types reflecting on issues such as mobility, rationality, adaptability and the final adjustment of this concepts to distributed environments such as the Internet, where this kind of agents has wide range application. Likewise, an information agent architecture is proposed to create a multi-agent information retrieval system in which a documentary paradigm based on the documentary cycle is developed.

  18. Secure Mobile Trade Agent

    Directory of Open Access Journals (Sweden)

    Musbah M. Aqe

    2007-01-01

    Full Text Available E-commerce on the internet has the ability to produce millions of transactions and a great number of merchants whose supply merchandise over the internet. As a result, it is difficult for entities to roam over every site on the internet and choose the best merchandise to trade. So, in this paper we introduced a mobile trade agent that visit the sites to gather and evaluate the information from merchant servers and decide to trade goods on behalf of the user. We observed that the combination of public key cryptosystem with distributed object technology make this proposed scheme more secure and efficient than the already existed schemes.

  19. Configuring Computational Agents

    Czech Academy of Sciences Publication Activity Database

    Beuster, G.; Neruda, Roman

    Halifax : Saint Mary's University, 2004 - (Zhuge, H.; Cheung, W.; Liu, J.), s. 57-62 ISBN 0-9734039-8-5. [International Workshop on Knowledge Grid and Grid Intelligence /2./. Beijing (CN), 20.09.2004] R&D Projects: GA AV ČR 1ET100300419 Grant ostatní: CZ-DE project(XX) CZE-03/023 Institutional research plan: CEZ:AV0Z1030915 Keywords : Bang 3 * multi-agent systems * computational intelligence models Subject RIV: BA - General Mathematics

  20. Holograms as Teaching Agents

    Science.gov (United States)

    Walker, Robin A.

    2013-02-01

    Hungarian physicist Dennis Gabor won the Pulitzer Prize for his 1947 introduction of basic holographic principles, but it was not until the invention of the laser in 1960 that research scientists, physicians, technologists and the general public began to seriously consider the interdisciplinary potentiality of holography. Questions around whether and when Three-Dimensional (3-D) images and systems would impact American entertainment and the arts would be answered before educators, instructional designers and students would discover how much Three-Dimensional Hologram Technology (3DHT) would affect teaching practices and learning environments. In the following International Symposium on Display Holograms (ISDH) poster presentation, the author features a traditional board game as well as a reflection hologram to illustrate conventional and evolving Three-Dimensional representations and technology for education. Using elements from the American children's toy Operation® (Hasbro, 2005) as well as a reflection hologram of a human brain (Ko, 1998), this poster design highlights the pedagogical effects of 3-D images, games and systems on learning science. As teaching agents, holograms can be considered substitutes for real objects, (human beings, organs, and animated characters) as well as agents (pedagogical, avatars, reflective) in various learning environments using many systems (direct, emergent, augmented reality) and electronic tools (cellphones, computers, tablets, television). In order to understand the particular importance of utilizing holography in school, clinical and public settings, the author identifies advantages and benefits of using 3-D images and technology as instructional tools.

  1. Amphoteric surface active agents

    Directory of Open Access Journals (Sweden)

    Eissa, A.M. F.

    1995-10-01

    Full Text Available 2-[trimethyl ammonium, triethyl ammonium, pyridinium and 2-amino pyridinium] alkanoates, four series of surface active agents containing carbon chain C12, C14, C16 and C18carbon atoms, were prepared. Their structures were characterized by microanalysis, infrared (IR and nuclear magnetic resonance (NMR. Surface and interfacial tension, Krafft point, wetting time, emulsification power, foaming height and critical micelle concentration (cmc were determined and a comparative study was made between their chemical structure and surface active properties. Antimicrobial activity of these surfactants was also determined.

    Se prepararon cuatro series de agentes tensioactivos del tipo 2-[trimetil amonio, trietil amonio, piridinio y 2-amino piridinio] alcanoatos, que contienen cadenas carbonadas con C12, C14, C16 y C18 átomos de carbono.
    Se determinaron la tensión superficial e interfacial, el punto de Krafft, el tiempo humectante, el poder de emulsionamiento, la altura espumante y la concentración critica de miscela (cmc y se hizo un estudio comparativo entre la estructura química y sus propiedades tensioactivas. Se determinó también la actividad antimicrobiana de estos tensioactivos. Estas estructuras se caracterizaron por microanálisis, infrarrojo (IR y resonancia magnética nuclear (RMN.

  2. Contrast agents for MRI

    International Nuclear Information System (INIS)

    Contrast agents are divided into two categories. The first one is paramagnetic compounds, including lanthanides like gadolinium, which mainly reduce the longitudinal (T1) relaxation property and result in a brighter signal. The second class consists of super-paramagnetic magnetic nanoparticles (SPMNPs) such as iron oxides, which have a strong effect on the transversal (T2) relaxation properties. SPMNPs have the potential to be utilized as excellent probes for magnetic resonance imaging (MRI). For instance, clinically benign iron oxide and engineered ferrite nanoparticles provide a good MRI probing capability for clinical applications. Furthermore, the limited magnetic property and inability to escape from the reticuloendothelial system (RES) of the used nanoparticles impede their further advancement. Therefore, it is necessary to develop the engineered magnetic nanoparticle probes for the next-generation molecular MRI. Considering the importance of MRI in diagnosing diseases, this paper presents an overview of recent scientific achievements in the development of new synthetic SPMNP probes whereby the sensitive and target-specific observation of biological events at the molecular and cellular levels is feasible. - Highlights: • This paper studies the contrast agents for MRI. • Fe―Co alloys and Mn-ferrites exhibit suitable contrast enhancement. • Nonhydrolytic thermal-decomposition synthetic method is suitable to produce MNPs. • This method allows controlling the size, magnetic dopants, magneto-crystalline anisotropy. • The increase in the superparamagnetic size leads to the contrast-enhancement

  3. Agent-oriented Software Engineering

    Institute of Scientific and Technical Information of China (English)

    GUAN Xu; CHENG Ming; LIU Bao

    2001-01-01

    An increasing number of computer systems are being viewed in terms of autonomous agents.Most people believe that agent-oriented approach is well suited to design and build complex systems. Yet. todate, little effort had been devoted to discuss the advantages of agent-oriented approach as a mainstreamsoftware engineering paradigm. Here both of this issues and the relation between object-oriented and agent-oriented will be argued. we describe an agent-oriented methodology and provide a quote for designing anauction system.

  4. Learning models of intelligent agents

    Energy Technology Data Exchange (ETDEWEB)

    Carmel, D.; Markovitch, S. [Computer Science Dept., Haifa (Israel)

    1996-12-31

    Agents that operate in a multi-agent system need an efficient strategy to handle their encounters with other agents involved. Searching for an optimal interactive strategy is a hard problem because it depends mostly on the behavior of the others. In this work, interaction among agents is represented as a repeated two-player game, where the agents` objective is to look for a strategy that maximizes their expected sum of rewards in the game. We assume that agents` strategies can be modeled as finite automata. A model-based approach is presented as a possible method for learning an effective interactive strategy. First, we describe how an agent should find an optimal strategy against a given model. Second, we present an unsupervised algorithm that infers a model of the opponent`s automaton from its input/output behavior. A set of experiments that show the potential merit of the algorithm is reported as well.

  5. Flexible, secure agent development framework

    Science.gov (United States)

    Goldsmith; Steven Y.

    2009-04-07

    While an agent generator is generating an intelligent agent, it can also evaluate the data processing platform on which it is executing, in order to assess a risk factor associated with operation of the agent generator on the data processing platform. The agent generator can retrieve from a location external to the data processing platform an open site that is configurable by the user, and load the open site into an agent substrate, thereby creating a development agent with code development capabilities. While an intelligent agent is executing a functional program on a data processing platform, it can also evaluate the data processing platform to assess a risk factor associated with performing the data processing function on the data processing platform.

  6. Avances en la evaluación de la sensibilización dérmica mediante métodos alternativos.

    OpenAIRE

    Alejandro A; A García-Bilbao; C Aristimuño

    2014-01-01

    La sensibilización dérmica constituye uno de los efectos adversos sobre la piel más común en las enfermedades laborales y que además afecta a toda la población al ser causada por productos químicos que son frecuentemente utilizados en el hogar, tanto aquellos destinados a la limpieza como a los productos de higiene personal. La necesidad de evaluar el posible daño que puede causar un agente químico sobre la piel, en lo que conocemos como sensibilización dérmica, está recogido en las distintas...

  7. UTBot: A Virtual Agent Platform for Teaching Agent System Design

    Directory of Open Access Journals (Sweden)

    In-Cheol Kim

    2007-02-01

    Full Text Available We introduce UTBot, a virtual agent platform for teaching agent system design. UTBot implements a client for the Unreal Tournament game server and Gamebots system. It provides students with the basic functionality required to start developing their own intelligent virtual agents to play autonomously UT games. UTBot includes a generic agent architecture, CAA (Context-sensitive Agent Architecture, a domain-specific world model, a visualization tool, several basic strategies (represented by internal modes and internal behaviors, and skills (represented by external behaviors. The CAA architecture can support complex long-term behaviors as well as reactive short-term behaviors. It also realizes high context-sensitivity of behaviors. We also discuss our experience using UTBot as a pedagogical tool for teaching agent system design in undergraduate Artificial Intelligence course.

  8. Mushrooms as therapeutic agents

    Directory of Open Access Journals (Sweden)

    Sushila Rathee

    2012-04-01

    Full Text Available Mushrooms have been known for their nutritional and culinary values and used as medicines and tonics by humans for ages. In modern terms, they can be considered as functional foods which can provide health benefits beyond the traditional nutrients. There are monographs that cover the medicinal and healing properties of some individual traditional mushrooms. There has been a recent upsurge of interest in mushrooms not only as a health food which is rich in protein but also as a source of biologically active compounds of medicinal value which include complementary medicine/dietary supplements for anticancer, antiviral, hepatoprotective, immunopotentiating and hypocholesterolemic agents. However the mechanisms of the various health benefits of mushrooms to humans still require intensive investigation, especially given the emergence of new evidence of their health benefits. In the present paper the medicinal potential of mushrooms is being discussed.

  9. Microencapsulation of chemotherapeutic agents

    International Nuclear Information System (INIS)

    Mixing various amounts of chemotherapeutic agents such as cisplatinum, 5-fluorouracil, mitomycin-C, and adriamycin with polymers such as poly-d, 1-lactide, ethylhydroxyethylcellulose, and polycaprolactone, several kinds of microcapsules were made. Among them, microcapsule made from ethylhydroxyethylcellulose showed best yield. Under light microscopy, the capsules were observed as particles with refractive properties. For the basic toxicity test, intraarterial administration of cisplatinum was done in 6 adult mongrel dogs. Follow-up angiography was accomplished in 2 wk intervals for 6 wks. Despite no significant difference in the histopathological examination between the embolized and normal kidneys, follow-up angiogram showed atrophy of renal cortex and diminished numbers of arterial branches in the embolized kidneys. In order to identify the structural properties of microcapsules, and to determine the drug content and the rate of release, further experiment is thought to be necessary. (Author)

  10. Hepatocytes as Immunological Agents.

    Science.gov (United States)

    Crispe, Ian N

    2016-01-01

    Hepatocytes are targeted for infection by a number of major human pathogens, including hepatitis B virus, hepatitis C virus, and malaria. However, hepatocytes are also immunological agents in their own right. In systemic immunity, they are central in the acute-phase response, which floods the circulation with defensive proteins during diverse stresses, including ischemia, physical trauma, and sepsis. Hepatocytes express a variety of innate immune receptors and, when challenged with pathogen- or damage-associated molecular patterns, can deliver cell-autonomous innate immune responses that may result in host defense or in immunopathology. Important human pathogens have evolved mechanisms to subvert these responses. Finally, hepatocytes talk directly to T cells, resulting in a bias toward immune tolerance. PMID:26685314

  11. MORBIDITY AGENTS: A REVIEW

    Directory of Open Access Journals (Sweden)

    Shrivastava Neelesh

    2011-09-01

    Full Text Available This paper discuss on clinical representation of morbid jealousy which often termed delusional jealousy or ‘Othello Syndrome’ is a psychiatric condition where a lover believes against all reason and their beloved is being sexually unfaithful. Patients will be preoccupied with their partner’s perceived lack of sexual fidelity and will often behave in an unacceptable or extreme way as they endeavor to prove their ideas. Misuse of any psychomotor is an important association cause morbidity jealousy agents, like CNS stimulants that release the catecholamine, particularly dopamine, from pre synaptic terminals substance should be treated as a priority. Where higher levels of violence are reported Sildenafil may be useful as a diagnostic as well as therapeutic test in such cases .Many studies have shown an association between high alcohol consumption and developing morbid jealousy. Amphetamine-induced psychosis has been extensively studied because of its close resemblance to schizophrenia.

  12. Agent Assignment for Process Management: Pattern Based Agent Performance Evaluation

    Science.gov (United States)

    Jablonski, Stefan; Talib, Ramzan

    In almost all workflow management system the role concept is determined once at the introduction of workflow application and is not reevaluated to observe how successfully certain processes are performed by the authorized agents. This paper describes an approach which evaluates how agents are working successfully and feed this information back for future agent assignment to achieve maximum business benefit for the enterprise. The approach is called Pattern based Agent Performance Evaluation (PAPE) and is based on machine learning technique combined with post processing technique. We report on the result of our experiments and discuss issues and improvement of our approach.

  13. Experimental study of the action of COX-2 selective nonsteroidal anti-inflammatory drugs and traditional anti-inflammatory drugs in bone regeneration Estudo experimental da ação dos anti-inflamatórios não hormonais inibidores seletivos da ciclooxigenase 2 (COX-2 e anti-inflamatórios tradicionais na regeneração óssea

    Directory of Open Access Journals (Sweden)

    Bruno C. Tiseo

    2006-06-01

    Full Text Available OBJECTIVE: The aim of this study is to compare the effects of traditional nonsteroidal anti-inflammatory drugs with nonsteroidal anti-inflammatory drugs that are selective cyclooxygenase-2 (COX-2 inhibitors in the process of bone regeneration in a rat model. MATERIALS AND METHODS: Forty-four Wistar strain rats were subjected to osteotomy of the right femur and randomly divided into 3 groups according to the drug to be given (diclofenac, rofecoxib, or placebo. Each group was divided into 2 subgroups according to the time to euthanasia after the surgery. The animals of Subgroup 1 were submitted to euthanasia 2 weeks after surgery, and those of Subgroup 2, underwent euthanasia 4 weeks after surgery. Radiographic examinations and bone callus histomorphometry were analyzed. RESULTS: No intergroup statistical difference was found in the bone callus area or in bone formation area 2 and 4 weeks after surgery. Intra-group analysis concerning the bone neoformation area inside the callus showed a significant difference within the diclofenac group, which presented less tissue. CONCLUSIONS: Fracture consolidation in Wistar rats occurs within less than 2 weeks, and the use of nonsteroidal anti-inflammatory drugs does not significantly influence this process.OBJETIVO: Comparar os efeitos do uso de antiinflamatórios não-esteróides tradicionais (AINES e AINES que são inibidores seletivos da ciclooxigenase-2 (COX-2, no processo de regeneração óssea em ratos. MATERIAL E MÉTODO: Quarenta e quatro ratos da linhagem Wistar submetidos a osteotomia do femur direito e divididos em três grupos, conforme o medicamento que receberam (diclofenaco, rofecoxib e placebo. Cada grupo foi dividido em dois subgrupos, conforme o tempo até o sacrifício, após a cirurgia. Os animais do subgrupo 1 foram sacrificados duas semanas após a cirurgia e os do subgrupo 2, quatro semanas após a cirurgia. Foram analisados exames radiográficos e a histomorfometria do calo

  14. Odor Classification using Agent Technology

    Directory of Open Access Journals (Sweden)

    Sigeru OMATU

    2014-03-01

    Full Text Available In order to measure and classify odors, Quartz Crystal Microbalance (QCM can be used. In the present study, seven QCM sensors and three different odors are used. The system has been developed as a virtual organization of agents using an agent platform called PANGEA (Platform for Automatic coNstruction of orGanizations of intElligent Agents. This is a platform for developing open multi-agent systems, specifically those including organizational aspects. The main reason for the use of agents is the scalability of the platform, i.e. the way in which it models the services. The system models functionalities as services inside the agents, or as Service Oriented Approach (SOA architecture compliant services using Web Services. This way the adaptation of the odor classification systems with new algorithms, tools and classification techniques is allowed.

  15. Stability of Evolving Agent Populations

    CERN Document Server

    Briscoe, G

    2007-01-01

    Stability is perhaps the most desired feature in the systems that we design. It is important for us to be able to predict the response of a Multi-Agent System (MAS) to various environmental conditions prior to its actual deployment. The Chli-DeWilde agent stability measure views a MAS as a discrete time Markov chain with a potentially unknown transition probabilities. A MAS is considered to be stable when its state, a stochastic process, has converged to an equilibrium distribution. We investigate an extension of their agent stability definition to include MASs with evolutionary dynamics, focusing on evolving agent populations. Additionally, using our extended agent stability measure, we construct an entropy-based definition for the degree of instability. An example system, the Digital Ecosystem, is considered in detail to investigate the stability of an evolving agent population through simulations. The results are consistent with the original Chli-DeWilde measure.

  16. Agent-based enterprise integration

    Energy Technology Data Exchange (ETDEWEB)

    N. M. Berry; C. M. Pancerella

    1998-12-01

    The authors are developing and deploying software agents in an enterprise information architecture such that the agents manage enterprise resources and facilitate user interaction with these resources. The enterprise agents are built on top of a robust software architecture for data exchange and tool integration across heterogeneous hardware and software. The resulting distributed multi-agent system serves as a method of enhancing enterprises in the following ways: providing users with knowledge about enterprise resources and applications; accessing the dynamically changing enterprise; locating enterprise applications and services; and improving search capabilities for applications and data. Furthermore, agents can access non-agents (i.e., databases and tools) through the enterprise framework. The ultimate target of the effort is the user; they are attempting to increase user productivity in the enterprise. This paper describes their design and early implementation and discusses the planned future work.

  17. Mobile Agents for Digital Signage

    OpenAIRE

    SATOH, Ichiro

    2010-01-01

    International audience This paper presents an agent-based framework for building and operating context-aware multimedia content on digital signage in public/private spaces. It enables active and multimedia content to be composed from mobile agents, which can travel from computer to computer and provide multimedia content for advertising or user-assistant services to users. The framework automatically deploys their agents at computers near to their current positions to provide advertising o...

  18. An agent for ecological deliberation

    OpenAIRE

    Debenham, John; Sierra, Carles

    2010-01-01

    An agent architecture supports the two forms of deliberation used by human agents. Cartesian, constructivist rationalism leads to game theory, decision theory and logical models. Ecological rationalism leads to deliberative actions that are derived from agents’ prior interactions and are not designed; i.e., they are strictly emergent. This paper aims to address the scant attention paid by the agent community to the predominant form of deliberation used by mankind.

  19. Agent factory: towards social robots

    OpenAIRE

    O'Hare, G. M. P.; Duffy, Brian R.; Collier, Rem; Rooney, Colm, (Thesis); O'Donoghue, Ruadhan

    1999-01-01

    This paper advocates the application of multi-agent techniques in the realisation of social robotic behaviour. We present the Social Robot Architecture, which integrates the key elements of agent-hood and robotics in a coherent and systematic manner. This architecture seamlessly integrates, real world robots, multi-agent development tools, and VRML visualisation tools into a coherent whole. Using these elements, we deliver a development environment, which facilitates rapid prototyping of soci...

  20. Agent Systems in Software Engineering

    OpenAIRE

    Lazarou, Vasilios S.; Gardikiotis, Spyridon K.; Malevris, Nicos

    2008-01-01

    In this chapter, the application of multi-agent systems to tackle the software engineering task was outlined. The concentration was on the employment of agent technology in order to deal with distributed software systems and mainly distributed database applications and web applications. The rationale behind utilizing agent technology has to do with the multi-tier architecture and the associated inherent complication of distributed applications and the required interoperability of software res...

  1. Research on Negotiating Agent Development

    Institute of Scientific and Technical Information of China (English)

    WEI Ding-guo; PENG Hong

    2004-01-01

    The paper presents a flexible and effective method of development of negotiating agents.A strategy specification, which is specified by a state chart and defeasible rules, can be dynamically inserted into an agent shell incorporating a state chart interpreter and a defeasible logic inference engine, in order to yield a desirable agent.The set of desirable criteria and rules is required to be justified with different context of the application.

  2. Extending Agent Languages for Autonomy

    OpenAIRE

    Meneguzzi, Felipe Rech

    2008-01-01

    BDI agent languages provide a useful abstraction for complex systems comprised of interactive autonomous entities, but they have been used mostly in the context of single agents with a static plan library of behaviours invoked reactively. These languages provide a theoretically sound basis for agent design but are very limited in providing direct support for autonomy and societal cooperation needed for large scale systems. Some techniques for autonomy and cooperation have been explored in the...

  3. Radioactive scanning agents with stabilizer

    International Nuclear Information System (INIS)

    Stable compositions useful as technetium 99-based scintigraphic agents comprise gentisyl alcohol or a pharmaceutically-acceptable salt or ester thereof in combination with a pertechnetate reducing agent or dissolved in pertechnetate-99m (sup(99m)TcOsub(4)sup(-)) solution. The compositions are especially useful in combination with a phosphate or phosphonate material that carries the radionuclide to bone, thus providing a skeletal imaging agent

  4. Technetium diagnostic agent and carrier

    International Nuclear Information System (INIS)

    A stable sup(99m)Tc-labelled radioactive diagnostic agent is produced by contacting sup(99m)Tc-containing pertechnetate with a non-radioactive carrier comprising a chelating agent, a water-soluble reducing agent and a stabilizer. The stabilizer is chosen from ascorbic acid and erythorbic acid and their pharmaceutically acceptable salts and esters. A mole ratio of more than 100 moles ascorbic or erythorbic acid to 1 mole of reducing agent provides a stable composition at high levels of radioactivity

  5. Relational agents: A critical review

    DEFF Research Database (Denmark)

    Campbell, Robert H.; Grimshaw, Mark Nicholas; Green, Gill

    2009-01-01

    and non-player characters that can actively participate in such relationships. The focus of this review is relational agents, agents that can build long term socioemotional relationships with users. In virtual worlds, such agents are just starting to emerge; they are more common in other environments...... but remain few and far between. This review critically assesses the progress of relational agent development and research since their inception in 2005, proposes new areas of research and considers the potential for their exploitation in virtual worlds....

  6. Validação de métodos alternativos qualitativos na detecção de patógenos alimentares Validation of qualitative alternative methods in the detection of food-born pathogens

    Directory of Open Access Journals (Sweden)

    Elaine Ibrahim de Freitas

    2006-12-01

    Full Text Available As Doenças de Origem Alimentar (DOA são um perigo de grande relevância para a saúde humana e para a economia dos indivíduos, famílias e nações. O risco de disseminação de microrganismos patogênicos vem crescendo continuamente, e programas de controle de qualidade microbiológica são empregados em toda a cadeia de produção alimentar a fim de minimizar o risco de infecção e/ou intoxicação. A utilização de métodos de detecção alternativos de microrganismos é uma das ferramentas que podem ser utilizadas para garantir a segurança microbiológica dos produtos. Contudo, para que a metodologia utilizada forneça resultados confiáveis é necessário que ela seja validada. A validação deve garantir, por meio de estudos experimentais, que o método atenda às exigências das aplicações analíticas, assegurando a confiabilidade dos resultados, devendo apresentar níveis adequados de acurácia, precisão, limite de detecção, robustez, repetitividade, reprodutibilidade, especificidade, linearidade e exatidão. Embora existam diversos guias descrevendo a validação de métodos analíticos, comparativamente, pouco se tem dito a respeito da validação de métodos microbiológicos e, menos ainda, de métodos moleculares. O objetivo deste trabalho é fazer uma revisão dos parâmetros necessários para validação de métodos alternativos qualitativos na detecção de patógenos alimentares.Food-Born Diseases (FBD are a considered an important hazard for human health and the economy on individual, family and national level. The risk of dissemination of pathogens increases continuously and microbiological quality control programs are employed in the entire food chain in order to minimize the risk of infection and/or intoxication. The use of alternative methods for the detection of microorganisms is one of the tools for granting the microbiological safety of the products. For obtaining reliable results however the method needs to be

  7. Métodos alternativos para contagem de micro-organismos em carcaças suínas Alternative methods for the enumeration of microorganisms in swine carcasses

    Directory of Open Access Journals (Sweden)

    Cristhiane Stecanella de Oliveira Cattani

    2013-06-01

    Full Text Available Micro-organismos estão presentes em toda a cadeia de processamento da carne, desde a matéria-prima até o produto final e compete aos programas de qualidade industrial verificar se existe contaminação na matéria-prima e nos produtos finais para, dessa forma, garantir um produto seguro ao consumidor. Para tanto, faz-se necessário utilizar metodologias alternativas à convencional na rotina diagnóstica dos laboratórios para obtenção de resultados confiáveis e em menor tempo possível. Com objetivo de verificar e comparar a correlação e o tempo de processamento, da metodologia convencional com as metodologias alternativas do sistema PetrifilmTM (3M e sistema TEMPO® (bioMeriéux, foi realizada contagem de micro-organismos mesófilos, de enterobactérias e de Escherichia coli. As amostras foram coletadas da superfície de carcaças suínas em um abatedouro com Inspeção Federal no Estado de Santa Catarina, Brasil. A contagem de micro-organismos mesófilos, de enterobactérias e Escherichia coli foi feita por meio de ensaios realizados com os métodos alternativos TEMPO®, Petrifilm™ e o método convencional de contagem de micro-organismos em placas. Após análise estatística, o coeficiente de correlação de Pearson (r demonstrou fortes correlações, acima de 0.70 entre as metodologias utilizadas para a contagem de enterobactérias e micro-organismos mesófilos, porém demonstrou moderada correlação, entre 0.30 a 0.70, para o diagnóstico de Escherichia coli. O uso dos métodos alternativos testados em substituição à metodologia convencional pode ser utilizado para diagnóstico de Escherichia coli, enterobactérias e micro-organismos mesófilos, por haver concordância entre os resultados encontrados, acrescido da rapidez dessas metodologias com benefício direto para a indústria de carne suína.Micro-organisms are present throughout the meat processing chain, from raw materials until finished product. Industrial quality

  8. Efeito do cruzamento entre diferentes genótipos para uso em sistemas alternativos de frango de corte = Effect of crossing between different genotypes for use in alternative broiler systems

    Directory of Open Access Journals (Sweden)

    Olmiro Bochi Brum

    2010-04-01

    Full Text Available Objetivou-se avaliar o desempenho de híbridos avícolas para atender ademanda de material genético em sistemas alternativos de criação. Foram utilizados 648 pintainhos de corte de ambos os sexos, provenientes do cruzamento entre reprodutores de corte e das raças Rhodes Island Red, White Plymouth Rock e Barred Plymouth Rock, distribuídos em seis tratamentos com seis repetições e 18 aves em cada unidade experimental, sendo o período de avaliação de um a 56 dias de idade. As características avaliadas foram: peso corporal (PC, ganho de peso (GP, consumo alimentar (CR, conversão alimentar (CA, e peso de carcaça (PCA, pernas (PCS e peito (PP. O delineamento experimental foi o inteiramente casualizado, com seis tratamentos de seis repetições cada. Foi realizado análise de variância, e quando significativo no nível de 5% de probabilidade aplicou-se o teste de Tukey. O PC aos 56 dias, bem como o GP de um a 56 dias foi significativamente inferior para híbridos oriundos do cruzamento entre machos reprodutores de corte e fêmeas White Plymouth Rock, resultado semelhante também foi encontrado nos parâmetros PCA e PCS, porém o PP não apresentou diferença significativa. Dessa forma, não se recomenda a criação do híbrido resultante deste cruzamento em sistemas alternativos.Aimed to evaluate the performance of poultry hybrids to meet demandfor genetic material in alternative systems of creation. It was used 648 chicks of both sexes from the crossing between, broilers breeders males and of races Rhodes Island Red, White Plymouth Rock and Barred Plymouth Rock, distributed in six treatments with six replicates and 18 birds in each experimental unit, being the period rating from one to 56 days of age. The caracteristics evaluated were: body weight (PC, weight gain (GP, feed intake (CR, feed conversion (CA, and carcass weight (PCA, legs (PCS and chest (PP. The experimental design was completely randomized design with six treatments with

  9. Incorporating BDI Agents into Human-Agent Decision Making Research

    Science.gov (United States)

    Kamphorst, Bart; van Wissen, Arlette; Dignum, Virginia

    Artificial agents, people, institutes and societies all have the ability to make decisions. Decision making as a research area therefore involves a broad spectrum of sciences, ranging from Artificial Intelligence to economics to psychology. The Colored Trails (CT) framework is designed to aid researchers in all fields in examining decision making processes. It is developed both to study interaction between multiple actors (humans or software agents) in a dynamic environment, and to study and model the decision making of these actors. However, agents in the current implementation of CT lack the explanatory power to help understand the reasoning processes involved in decision making. The BDI paradigm that has been proposed in the agent research area to describe rational agents, enables the specification of agents that reason in abstract concepts such as beliefs, goals, plans and events. In this paper, we present CTAPL: an extension to CT that allows BDI software agents that are written in the practical agent programming language 2APL to reason about and interact with a CT environment.

  10. Los sistemas de barrancos mexicanos, un recurso potencial para el turismo alternativo. El caso de los Barrancos del río Calderón, Estado de México

    Directory of Open Access Journals (Sweden)

    José Isabel Juan Pérez

    2009-01-01

    Full Text Available El sistema de barrancos del río Calderón, ubicado al sureste del Estado de México,que comprende porciones de los municipios de Villa Guerrero, Ixtapan de La Sal y Zumpahuacán, representa un elemento geográfico de trascendencia para las familias de la región. En este lugar coexisten diversos ecosistemas con elementos geográficos, paisajísticos, geomorfológicos, hidrológicos y amplia biodiversidad que pueden ser utilizados para el turismo alternativo. Mediante el método geográfico, incluyendo cartografía automatizada, fotointerpretación y trabajo de campo, se determinó el potencial natural y sociocultural que posee el sistema de barrancos. La investigación se sustentó en la Teoría General de Sistemas y la Ecología Cultural, complementándose con fundamentos de Geografía Cultural y conceptos de Turismo, que permitieron analizar a los barrancos como un sistema integrado en el que convergen componentes físicos, biológicos y socioculturales. El resultado más relevante es que los elementos bióticos y abióticos del sistema de barrancos están siendo impactados por las actividades económicas y extractivas de los pobladores de la región, sin embargo, aún poseen recursos que mediante un programa de manejo pueden ser utilizados para realizar actividades ecoturísticas encaminadas al desarrollo local, las que al mismo tiempo coadyuven a la protección de los elementos naturales más representativos del sistema.

  11. Plasmids encoding therapeutic agents

    Science.gov (United States)

    Keener, William K.

    2007-08-07

    Plasmids encoding anti-HIV and anti-anthrax therapeutic agents are disclosed. Plasmid pWKK-500 encodes a fusion protein containing DP178 as a targeting moiety, the ricin A chain, an HIV protease cleavable linker, and a truncated ricin B chain. N-terminal extensions of the fusion protein include the maltose binding protein and a Factor Xa protease site. C-terminal extensions include a hydrophobic linker, an L domain motif peptide, a KDEL ER retention signal, another Factor Xa protease site, an out-of-frame buforin II coding sequence, the lacZ.alpha. peptide, and a polyhistidine tag. More than twenty derivatives of plasmid pWKK-500 are described. Plasmids pWKK-700 and pWKK-800 are similar to pWKK-500 wherein the DP178-encoding sequence is substituted by RANTES- and SDF-1-encoding sequences, respectively. Plasmid pWKK-900 is similar to pWKK-500 wherein the HIV protease cleavable linker is substituted by a lethal factor (LF) peptide-cleavable linker.

  12. Gastrointestinal scanning agent

    International Nuclear Information System (INIS)

    An easily prepared radiolabeled gastrointestinal scanning agent is described. Technetium-99m has ideal characteristics for imaging the upper and lower GI tract and determining stomach emptying and intestinal transit time when used with an insoluble particulate material. For example, crystalline and amorphous calcium phosphate particles can be effectively labeled in a one-step process using sup(99m)TcO4 and SnCl2. These labeled particles have insignificant mass and when administered orally pass through the GI tract unchanged, without affecting the handling and density of the intestinal contents. Visualization of the esophageal entry into the stomach, the greater and lesser curvatures of the stomach, ejection into the duodenum, and rates of passage through the upper and lower GI tract are obtained. The slurry of sup(99m)TC particulate can be given rectally by enema. Good images of the cecum and the ascending, transverse, and descending colon are obtained. Mucosal folds and the splenic and hepatic flexures are visualized. The resilience of the large intestine is also readily visualized by pneumocolonographic techniques. (author)

  13. Análise da aplicação de indicadores alternativos ao Overall Equipment Effectiveness (OEE) na gestão do desempenho global de uma fábrica An analysis of the application of indicators alternative to Overall Equipment Effectiveness (OEE) in the management of a plant's overall performance

    OpenAIRE

    Christianne Matias Busso; Dario Ikuo Miyake

    2013-01-01

    Embora a medição do Overall Equipment Effectiveness (OEE) seja uma prática de gestão industrial com crescente difusão, indicadores alternativos ao mesmo têm sido propostos na literatura para tratar da avaliação do desempenho num nível mais global dos sistemas de produção. O objetivo deste artigo é de apresentar e analisar tais indicadores e explorar suas possibilidades de aplicação na busca de um aproveitamento efetivo da capacidade de produção. Inicialmente, é elaborado um quadro referencial...

  14. Relevamiento de potenciales clientes finales alternativos a Expofrut del producto uvas de mesa Black Seedless, Imperial Seedless, Red Globe y Flame Seedless, para una PyME radicada en San Juan y exportarlas a aquellos destinos en donde se localicen los potenciales clientes

    OpenAIRE

    Conti Persino, Paula

    2011-01-01

    En el presente trabajo se relevan los potenciales clientes finales alternativos a Expofrut del producto uvas de mesa Black Seedless, Imperial Seedless, Red Globe y Flame Seedless, para una Pyme radicada en San Juan, para luego poder definir la forma más redituable de exportarlas a aquellos destinos en donde se localicen los potenciales clientes. Se decidió desarrollar el presente trabajo de manera tal de poder confirmar o descartar la hipótesis de una mayor obtención de ganancia por exportaci...

  15. Simulación de procesos termodinámicos cuasi ideales orientados a la generación de trabajo mecánico. Evaluación de combinaciones posibles para su aplicación en motores alternativos de combustión o de aportación de calor

    OpenAIRE

    Llop Garcia, Xavier

    2009-01-01

    El objetivo del presente proyecto es la obtención de una herramienta informática que, gracias a un modelo matemático, simule los procesos termodinámicos de la fase cerrada de un motor alternativo de combustión interna. El motor que se pretende simular puede seguir un ciclo Otto o un ciclo Diesel y ser alimentado por distintos tipos de combustible. Para la obtención del modelo matemático se aceptaran ciertas hipótesis de simplificación debido a la complejidad de los procesos que tienen luga...

  16. Murcha de fusário em helicônia: fontes de resistência, método alternativo de detecção e defesa estrutural Heliconia’s Fusarium wilt: resistance sources, alternative method of detection and structural mechanisms

    OpenAIRE

    Neilza Reis Castro; Rildo Sartori Barbosa Coêlho; Delson Laranjeira; Rejane Magalhães de Mendonça Pimentel; Clébio Pereira Ferreira

    2010-01-01

    O cultivo das helicônias vem sendo afetado pela murcha, causada por Fusarium oxysporum f.sp. cubense. Este trabalho objetivou identificar fontes de resistência, verificar a detecção da resistência através de método alternativo e avaliar a lignificação como mecanismo de defesa do hospedeiro ao patógeno. As espécies utilizadas na identificação de resistência foram Heliconia bihai, H. psittacorum cvs. Golden Torch e Golden Torch Adrian, H. rostrata, H. stricta cvs. Capri e Fire Bird, H. psittaco...

  17. Emprego do óleo de Melaleuca alternifolia Cheel (Myrtaceae) na odontologia: perspectivas quanto à utilização como antimicrobiano alternativo às doenças infecciosas de origem bucal Use of Melaleuca alternifolia Cheel (Myrtaceae) oil in dentistry: perspectives on its use as alternative antimicrobial to infectious diseases of oral origin

    OpenAIRE

    Oliveira, A. C. M.; Fontana, A.; T.C. Negrini; M.N.M. Nogueira; T.B.L. Bedran; C.R. Andrade; Spolidorio, L. C.; D.M.P. Spolidorio

    2011-01-01

    O interesse por medicamentos alternativos, principalmente daqueles provenientes de extratos naturais, tem aumentado nas últimas décadas. A Melaleuca alternifolia é um arbusto pertencente ao gênero Melaleuca, popularmente conhecida como "árvore de chá", cujo principal produto é o óleo essencial (TTO - tea tree oil), de grande importância medicinal por possuir comprovada ação bactericida e antifúngica contra diversos patógenos humanos. Em virtude da atividade terapêutica em diversas especialida...

  18. 2012 Survey of clothing agents

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    Clothing agents take part in China International Clothing and Accessories Fairs ( CHIC ) year by year. In order to attracting investment, they compared with each other at improving their originality and service levels. At the exhibition brands manufacturers and agents had a face-to-face communication,

  19. Topical agents in burn care

    Directory of Open Access Journals (Sweden)

    Momčilović Dragan

    2002-01-01

    Full Text Available Introduction Understanding of fluid shifts and recognition of the importance of early and appropriate fluid replacement therapy have significantly reduced mortality in the early post burn period. After the bum patient successfully passes the resuscitation period, the burn wound represents the greatest threat to survival. History Since the dawn of civilization, man has been trying to find an agent which would help burn wounds heal, and at the same time, not harm general condition of the injured. It was not until the XX century, after the discovery of antibiotics, when this condition was fulfilled. In 1968, combining silver and sulfadiazine, fox made silver-sulfadiazine, which is a 1% hydro-soluble cream and a superior agent in topical treatment of burns today. Current topical agents None of the topical antimicrobial agents available today, alone or combined, have the characteristics of ideal prophylactic agents, but they eliminate colonization of burn wound, and invasive infections are infrequent. With an excellent spectrum of activity, low toxicity, and ease of application with minimal pain, silver-sulfadiazine is still the most frequently used topical agent. Conclusion The incidence of invasive infections and overall mortality have been significantly reduced after introduction of topical burn wound antimicrobial agents into practice. In most burn patients the drug of choice for prophylaxis is silver sulfadiazine. Other agents may be useful in certain clinical situations.

  20. Agent Roles in Human Teams

    OpenAIRE

    Lewis, M.; Sycara, K.; Payne, T.R.

    2003-01-01

    In this paper, we describe results of a series of experiments investigating the effects of agent aiding on human teams. The role an agent played, its task, and the ease with which it communicated with its human teammates all influenced team behavior. Team supporting tasks such as relaying and reminding seemed particularly effective.

  1. Intelligent Agents in Physics Education

    Science.gov (United States)

    Sánchez-Guzmán, D.; Mora, César

    2010-07-01

    Intelligent Agents are being applied in a wide range of processes and everyday applications. Their development is not new, in recent years they have had an increased attention and design; like learning and mentoring tools. In this work we discuss the definition of what an intelligent agent is; how they are applied; how they look like; recent implementations of agents; agents as support in the learning process, more precisely intelligent tutors; their state in Latin-American countries and future developments and trends that will permit a better communication between people and agents. Also we present an Intelligent Tutor applied as a tool for improving high-school students' skills and reasoning for the first five topics of Mechanics curricula.

  2. Markov Tracking for Agent Coordination

    Science.gov (United States)

    Washington, Richard; Lau, Sonie (Technical Monitor)

    1998-01-01

    Partially observable Markov decision processes (POMDPs) axe an attractive representation for representing agent behavior, since they capture uncertainty in both the agent's state and its actions. However, finding an optimal policy for POMDPs in general is computationally difficult. In this paper we present Markov Tracking, a restricted problem of coordinating actions with an agent or process represented as a POMDP Because the actions coordinate with the agent rather than influence its behavior, the optimal solution to this problem can be computed locally and quickly. We also demonstrate the use of the technique on sequential POMDPs, which can be used to model a behavior that follows a linear, acyclic trajectory through a series of states. By imposing a "windowing" restriction that restricts the number of possible alternatives considered at any moment to a fixed size, a coordinating action can be calculated in constant time, making this amenable to coordination with complex agents.

  3. Avances en la evaluación de la sensibilización dérmica mediante métodos alternativos.

    Directory of Open Access Journals (Sweden)

    Alejandro A

    2014-01-01

    Full Text Available La sensibilización dérmica constituye uno de los efectos adversos sobre la piel más común en las enfermedades laborales y que además afecta a toda la población al ser causada por productos químicos que son frecuentemente utilizados en el hogar, tanto aquellos destinados a la limpieza como a los productos de higiene personal. La necesidad de evaluar el posible daño que puede causar un agente químico sobre la piel, en lo que conocemos como sensibilización dérmica, está recogido en las distintas legislaciones relacionadas con la evaluación del riesgo para la salud derivado de la comercialización de productos químicos: REACH (Registration, Evaluation, Authorisation and Restriction of chemicals, Biocidas, Cosméticos….Actualmente los métodos aprobados por la OECD (Organización para la Cooperación y el Desarrollo Económico utilizando animales, son los únicos capaces de evaluar el daño, por una parte, y clasificar un potencial sensibilizante, por otra. Los esfuerzos en investigación realizados en los últimos años, junto con el empuje de EURL-ECVAM (European Union Reference Laboratory for alternatives to animal testing han permitido validar métodos in vitro que, aunque no sustituyen totalmente los ensayos con animales al evaluar solo un evento dentro del proceso de sensibilización (DPRA, KeratinoSens y h-CLAT, sí pueden formar parte de una estrategia integrada con la cual poder evaluar el riesgo que supone para la salud la utilización de potenciales sensibilizantes dérmicos. La experimentación que se llevará a cabo en los próximos años aportará importantes novedades en este apartado.

  4. Agent Communications using Distributed Metaobjects

    Energy Technology Data Exchange (ETDEWEB)

    Goldsmith, Steven Y.; Spires, Shannon V.

    1999-06-10

    There are currently two proposed standards for agent communication languages, namely, KQML (Finin, Lobrou, and Mayfield 1994) and the FIPA ACL. Neither standard has yet achieved primacy, and neither has been evaluated extensively in an open environment such as the Internet. It seems prudent therefore to design a general-purpose agent communications facility for new agent architectures that is flexible yet provides an architecture that accepts many different specializations. In this paper we exhibit the salient features of an agent communications architecture based on distributed metaobjects. This architecture captures design commitments at a metaobject level, leaving the base-level design and implementation up to the agent developer. The scope of the metamodel is broad enough to accommodate many different communication protocols, interaction protocols, and knowledge sharing regimes through extensions to the metaobject framework. We conclude that with a powerful distributed object substrate that supports metaobject communications, a general framework can be developed that will effectively enable different approaches to agent communications in the same agent system. We have implemented a KQML-based communications protocol and have several special-purpose interaction protocols under development.

  5. Mobile agent driven by aspect

    Directory of Open Access Journals (Sweden)

    Youssef Hannad

    2010-11-01

    Full Text Available Domain application of mobile agents is quite large. They are used for network management and the monitoring of complex architecture. Mobile agent is also essential into specific software architecture such that adaptable grid architecture. Even if the concept of mobile agent seems to be obvious, the development is always complex because it needs to understand network features but also security features and negotiation algorithms. We present a work about an application of aspects dedicated to mobile agent development over a local network. At this level, the underlying protocol is called jini and allows managing several essential concepts such that short transaction and permission management. Three subsets of aspects are defined in this work. A part is for the description of agent host and its security level, accessible resource, etc. A second part is about mobile agent and their collaboration. This means how they can operate on an agent host with the respect of the execution context. All the results are illustrated through a distributed monitoring application called DMA. Its main objective is the observation of component servers.

  6. Intelligent Farmer Agent for Multi-Agent Ecological Simulations Optimization

    OpenAIRE

    Filipe Cruz; António Pereira; Pedro Valente; Pedro Duarte; Luis Paulo Reis

    2007-01-01

    This paper presents the development of a bivalve farmer agent interacting with a realistic ecological simulation system. The purpose of the farmer agent is to determine the best combinations of bivalve seeding areas in a large region, maximizing the production without exceeding the total allowed seeding area. A system based on simulated annealing, tabu search, genetic algorithms and reinforcement learning, was developed to minimize the number of iterations required to unravel a semi-optimum s...

  7. MDE and Mobile Agents : another reflexion on the agent migration

    OpenAIRE

    Gherbi, Tahar; Borne, Isabelle; Meslati, Djamel

    2009-01-01

    International audience Model Driven Engineering (MDE) is a software development approach family based on the use of models in the software construction. It allows the exploitation of models to simulate, estimate, understand, communicate and produce code. Mobile agents are a very interesting technology to develop applications for mobile and distributed environments. A mobile agent is essentially a computer program that acts autonomously on behalf of a user and travels through a network of h...

  8. Knowledge mining using intelligent agents

    CERN Document Server

    Dehuri, Satchidananda

    2010-01-01

    ""Knowledge Mining Using Intelligent Agents"" explores the concept of knowledge discovery processes and enhances decision-making capability through the use of intelligent agents like ants, termites and honey bees. In order to provide readers with an integrated set of concepts and techniques for understanding knowledge discovery and its practical utility, this book blends two distinct disciplines - data mining and knowledge discovery process, and intelligent agents-based computing (swarm intelligence and computational intelligence). For the more advanced reader, researchers, and decision/policy

  9. Agent-oriented Software Engineering

    Institute of Scientific and Technical Information of China (English)

    MingCheng; XuGuan; BaoLiu

    2004-01-01

    An increasing number of computer systems are being viewed in terms of autonomous agents.Most people believe that agent-oriented approach is well suited to designing and building complex systems. Yet, to date, little effort had been devoted to discussing the advantages of agent-oriented approach as a mainstream software engineering paradiam.Here both of this issues and the relation between object-oriented and agentoriented will be argued.We describe an agent-oriented methodology and provide a quote for designing a auction system.

  10. Optimistic Agents are Asymptotically Optimal

    OpenAIRE

    Sunehag, Peter; Hutter, Marcus

    2012-01-01

    We use optimism to introduce generic asymptotically optimal reinforcement learning agents. They achieve, with an arbitrary finite or compact class of environments, asymptotically optimal behavior. Furthermore, in the finite deterministic case we provide finite error bounds.

  11. Agents containing chlorhexidine in dentistry

    OpenAIRE

    Lebedeva S.N.; Zemlyanichenko М.К.

    2011-01-01

    Aclinical definition of the efficacy of chlorhexidine-containing means for reducing the risk of dental caries and gingivitis with plastic caps. Chlorhexidine is an effective antimicrobial agent for the formation of individual programs for the prevention of dental caries

  12. Chemical Agents: Facts about Evacuation

    Science.gov (United States)

    ... Health Emergency Response Guide Reaching At-Risk Populations Chemical Agents: Facts About Evacuation Format: Select one PDF [ ... on Facebook Tweet Share Compartir Some kinds of chemical accidents or attacks, such as a train derailment ...

  13. PENETRATION ENHANCEMENT OF MEDICINAL AGENTS

    OpenAIRE

    Sharma Ganesh N.; Sanadya Jyotsana; Kaushik Avinash; Dwivedi Abha

    2012-01-01

    Many current therapeutic agents like antibiotics, ionizable and peptide drugs are impermeable or do not possess the requisite physicochemical properties for efficient transport through outer tissue barrier to attain therapeutic blood level. For this reason the delivery of such drugs through barriers is currently one of the major interests in pharmaceutical research. Penetration enhancers or promoters are agents that have no therapeutic properties of their own but can transport the sorption of...

  14. Agents in E-learning

    OpenAIRE

    S. Mencke; Dumke, R

    2007-01-01

    This paper presents a framework to describe thecrossover domain of e-learning and agent technology.Furthermore it is used to classify existing work and possiblestarting points for the future development of agenttechniques and technologies order to enhance theperformance and the effectiveness of several aspects of elearningsystems. Agents are not a new concept but their usein the field of e-learning constitutes a basis for consequentialadvances.

  15. Handling of injectable antineoplastic agents.

    OpenAIRE

    Knowles, R S; Virden, J E

    1980-01-01

    Although the clinical toxicity of antineoplastic drugs has been well documented there is little or no information on the problems that may arise on the handling and mishandling of such agents. This paper attempts to highlight the importance of taking precautions to prevent adverse effects resulting from contact with cytotoxic drugs during handling and to suggest a practical guide for the handling of such agents.

  16. Biocontrol agents in signalling resistance

    OpenAIRE

    Loon, L C; Pieterse, C.M.J.

    2002-01-01

    The mechanisms by which biological control agents suppress disease comprise competition for nutrients, notably iron, production of antibiotics, and secretion of lytic enzymes, as well as inducing resistance in the plant. The former three mechanisms act primarily on the pathogen by decreasing its activity, growth, and/or survival and require the biocontrol agent and the pathogen to be in close proximity. Because microorganisms with biocontrol properties and soilborne pathogens are both attract...

  17. Epidemic Spreading with External Agents

    OpenAIRE

    Banerjee, Siddhartha; Gopalan, Aditya; Das, Abhik Kumar; Shakkottai, Sanjay

    2012-01-01

    We study epidemic spreading processes in large networks, when the spread is assisted by a small number of external agents: infection sources with bounded spreading power, but whose movement is unrestricted vis-\\`a-vis the underlying network topology. For networks which are `spatially constrained', we show that the spread of infection can be significantly speeded up even by a few such external agents infecting randomly. Moreover, for general networks, we derive upper-bounds on the order of the...

  18. Locating Agents in RFID Architectures

    OpenAIRE

    Abdel-Naby, Sameh; Giorgini, Paolo

    2006-01-01

    The use of software agents can create an “intelligent” interface between users’ preferences and the back‐end systems. Agents are now able to interact and communicate with each other, forming a virtual community and feeding back the user with suggestions. Innovative systems related to Asset Tracking, Inventory and Shelving architectures are more often involving advanced communication techniques (e.g., RFID); these systems are responsible for user authentication and objects verification. RFID s...

  19. Towards Building Computational Agent Schemes

    Czech Academy of Sciences Publication Activity Database

    Beuster, Gerd; Krušina, Pavel; Neruda, Roman; Rydvan, Pavel

    Wien : SpringerVerlag, 2003 - (Pearson, D.; Steele, N.; Albrecht, R.), s. 210-215 ISBN 3-211-00743-1. [ICANNGA'2003 /6./. Roanne (FR), 23.04.2003-25.04.2003] R&D Projects: GA ČR GA201/02/0428 Institutional research plan: AV0Z1030915 Keywords : multi agent system s * intelligent agent s * hybrid models Subject RIV: BA - General Mathematics

  20. Cooperation of Computational Intelligence Agents

    Czech Academy of Sciences Publication Activity Database

    Neruda, Roman

    Los Alamitos : IEEE Computer Society, 2006 - (Smari, W.; McQuay, W.), s. 256-263 ISBN 0-9785699-0-3. [International Symposium on Collaborative Technologies and System s. Las Vegas (US), 14.05.2006-17.05.2006] R&D Projects: GA AV ČR(CZ) 1ET100300419 Institutional research plan: CEZ:AV0Z10300504 Keywords : multi - agent system s * cooperative agent s * computational intelligence * ontologies Subject RIV: IN - Informatics, Computer Science

  1. Bacteriocins as potential anticancer agents

    OpenAIRE

    Sukhraj eKaur; Sumanpreet eKaur

    2015-01-01

    Cancer remains one of the leading causes of deaths worldwide, despite advances in its treatment and detection. The conventional chemotherapeutic agents used for the treatment of cancer have nonspecific toxicity towards normal body cells that cause various side effects. Secondly, cancer cells are known to develop chemotherapy resistance in due course of treatment. Thus, the demand for novel anti-cancer agents is increasing day by day. Some of the experimental studies have reported the therapeu...

  2. Bacteriocins as Potential Anticancer Agents

    OpenAIRE

    Kaur, Sumanpreet; Kaur, Sukhraj

    2015-01-01

    Cancer remains one of the leading causes of deaths worldwide, despite advances in its treatment and detection. The conventional chemotherapeutic agents used for the treatment of cancer have non-specific toxicity toward normal body cells that cause various side effects. Secondly, cancer cells are known to develop chemotherapy resistance in due course of treatment. Thus, the demand for novel anti-cancer agents is increasing day by day. Some of the experimental studies have reported the therapeu...

  3. Business Intelligence using Software Agents

    OpenAIRE

    Ana-Ramona BOLOGA; Razvan BOLOGA

    2011-01-01

    This paper presents some ideas about business intelligence today and the importance of developing real time business solutions. The authors make an exploration of links between business intelligence and artificial intelligence and focuses specifically on the implementation of software agents-based systems in business intelligence. There are briefly presented some of the few solutions proposed so far that use software agents properties for the benefit of business intelligence. The authors then...

  4. Evaluación de la toxicidad aguda de extractos de plantas medicinales por un método alternativo (Evaluation of acute toxicity of extracts of medicinal plants by an alternative testing

    Directory of Open Access Journals (Sweden)

    Deodelsy Bermúdez Toledo:

    2007-03-01

    Full Text Available Se evaluó la toxicidad a dosis única de seis extractos de plantas medicinales: Psidium guajava L. (guayaba, Eucalyptus citriodoraHooker (eucalipto de limón, Cymbopogon citratus (DC Stapf (caña santa, hierba de limón, Hibiscus elatus Sw. (majagua, Justicia pectoralis Jacq. (tilo, Plectranthus amboinicus (Lour. Spreng (orégano francés mediante un método alternativo e internacionalmente validado y aceptado (procedimiento de dosis fijas en ratasSprague Dawley. El grupo tratado recibió por vía oral una dosis límite de 2000 mg/kg de masa corporal y el control negativocloruro de sodio 0,9%. En las condiciones del ensayo no se produjo mortalidad ni se manifestaron síntomas indicativos de toxicidad en los animales. Los estudios anatomopatológicos macroscópicos nomostraron ninguna alteración en los órganos estudiados. La DL50 de los extractos de estudio se encuentra por encima de 2000mg/kg de masa corporal, calificándose éstos, según el Sistema Global Armonizado, como “No clasificadas” (”No tóxicas”.A single dose toxicity study in six extracts of medicinal plants: Psidium guajava L. (guava, Eucalyptus citriodora Hooker (lemon eucalyptus, Cymbopogon citratus (DC Stapf (lemon grass, Hibiscus elatus Sw. (majagua, Justicia pectoralis Jacq. (linden, lectranthus amboinicus (Lour. Spreng (French oregano was done, using an alternative internationally validated and accepted method (Fix Dose Procedure in Sprague Dawley rats. The treated group received by oral route a dose limit of 2000 mg/kg of corporal mass and the controlnegative chloride of sodium 0.9%. Under the assay conditions didn't produced mortality neither they showed indicative symptoms oftoxicity in the animals. The macroscopic anatomopathology studies didn't show any alteration in the studied organs. The LD50 ofthe study extracts is above 2000 mg/kg of corporal mass, being qualified these, according to the Harmonized Global System,as "Not classified" ("Not toxic".

  5. INTEGRACIÓN DE CONTROL BIOLÓGICO Y DE PRODUCTOS ALTERNATIVOS CONTRA Tetranychus urticae (ACARI: TETRANYCHIDAE INTEGRATION OF BIOLOGICAL CONTROL AND ALTERNATIVE PRODUCTS AGAINST Tetranychus urticae (ACARI: TETRANYCHIDAE

    Directory of Open Access Journals (Sweden)

    Alberto Soto

    Full Text Available Tetranychus urticae es una importante plaga asociada al cultivo de fresa debido a las altas densidades poblacionales alcanzadas y a los daños ocasionados a las plantas. Los productores utilizan acaricidas en grandes volúmenes sin cumplir los periodos de carencia, ocasionando residuos tóxicos en los frutos, desarrollo de poblaciones resistentes a los productos, destrucción de organismos benéficos, intoxicación de mamíferos y contaminación del medio ambiente. Por lo tanto, es necesario generar otras alternativas de manejo de este ácaro plaga. El objetivo de este trabajo fue evaluar, mediante el análisis conjunto de la concentración letal y subletal, la acción tóxica de productos comerciales a base de nim sobre los ácaros T. urticae y Phytoseiulus macropilis. Fueron controladas poblaciones de T. urticae en plantas de fresa cuando se emplearon concentraciones correspondientes a CL95 de los productos alternativos a base de nim, y también cuando se utilizaron concentraciones inferiores. La aplicación de los productos a base de nim, Neem Pro, Organic Neem y Natuneem en la CL95 y cuando la tasa instantánea de crecimiento poblacional ri=0,1 para el predador representan una alternativa viable para el control del ácaro fitófago T. urticae.Tetranychus urticae is an important pest associated with strawberry, due to its high densities and plant damage. Farmers use acaricides in large volumes without complying with the window between the last application and harvest, resulting on toxic residues in fruits, as well as pest populations resistant to pesticides, decrement of beneficial organisms, mammalian toxicity and environmental pollution. Therefore, it is necessary to generate new alternatives for the control of this mite. The aim of this work was to evaluate the toxic effect of commercial neem-based products on the mites T. urticae and Phytoseiulus macropilis, through a combined analysis using both, lethal and sublethal concentrations

  6. Efeito de tratamentos químicos alternativos no controle de Diaphania spp. (Lepidoptera: Crambidae em pepino = Effect of alternative chemical treatments on the Diaphania spp. (Lepidoptera: Crambidae control in cucumber

    Directory of Open Access Journals (Sweden)

    Alvimar Bavaresco

    2007-07-01

    Full Text Available As brocas-das-cucurbitáceas Diaphania nitidalis e D. hyalinata são pragas importantes na cultura do pepino, danificando a parte aérea das plantas. Para seu controle, normalmente são empregados inseticidas de alta toxicidade e baixa seletividade aos inimigosnaturais. O objetivo deste trabalho foi avaliar o efeito de tratamentos químicos alternativos utilizados na produção orgânica no controle das brocas. Os tratamentos avaliados foram: 1. Bacillus thuringiensis var. kurstaki (Dipel PM®; 2. Óleo de nim (Dalneem®, 3. Extrato de sementes de cinamomo (Melia azedarach; 4. Extrato de folhas de cinamomo; 5. Extrato de folhas de pessegueiro bravo e pimenteira (Prunus sellowii e Capsicodendron dinisii; 6. Testemunha (sem aplicação, realizando-se quatro aplicações em intervalos de sete dias. A avaliação dos danos foi realizada sete dias após a 4ª aplicação. O inseticida biológico Dipel PM® (Bacillus thuringiesis var. kurstaki proporcionou maior eficiência de controle, reduzindoem 33,3% os danos em ponteiros e 25,9% em frutos de pepino. O óleo de nim (Dalneem® e os extratos aquosos de sementes de cinamomo, de folhas de cinamomo e de folhas de pessegueiro bravo + pimenteira não diferiram significativamente da testemunha, apresentando eficiência de controle de 0 a 22,2% em ponteiros e de 0,1 a 13,7% em frutos.The pickleworms Diaphania nitidalis and D. hyalinata are important pests of cucumber, damaging the canopy of the plants. In general, insecticides with high toxicity and low selectivity to natural enemies are used to control this pest. The objective of this work was to evaluate the effect of alternative chemical treatments on the control of pickleworms in cucumber. The evaluated treatments were: 1 – Bacillus thuringiensis var. kurstaki (Dipel PM®; 2 –Neem oil (Dalneem®, 3 – Chinaberry seeds extract (Melia azedarach; 4 – Chinaberry leaves extract; 5 – Prunus sellowii and Capsicodendron dinisii leaves extract; 6

  7. Efeito de produtos alternativos para o controle do bolor verde (Penicillium digitatum em pós-colheita de citros Effect of the alternative products for control of green mold (Penicillium digitatum in post-harvest citrus fruit

    Directory of Open Access Journals (Sweden)

    DANIEL ANDRADE DE SIQUEIRA FRANCO

    2002-08-01

    Full Text Available O objetivo do trabalho foi verificar a ocorrência de sinergismo entre misturas de produtos alternativos aos fungicidas, para o controle do bolor verde (Penicillium digitatum em pós-colheita de citros. Foram testados dez produtos individualmente e trinta e cinco combinações destes produtos dois a dois, em comparação com tiabendazole e testemunha, com e sem inoculação. Os produtos testados não apresentaram efeito de sinergismo, exceto a mistura carbonato de Na + ácido bórico. Carbonato de Na e ácido bórico controlaram a doença em 78 e 87%, respectivamente, e, utilizando a mistura, o controle foi de 93%. Destacaram-se, ainda no controle da doença, o bicarbonato de Na, metabissulfito de Na e as misturas de bicarbonato de sódio + ácido bórico, carbonato de Na + carbonato de K, carbonato de Na + sorbato de K, bicarbonato de Na + carbonato de Na, controlando 92; 77; 81; 77; 75 e 71%, respectivamente. O tiabendazole utilizado como padrão controlou totalmente a doença.The objective of this work was verify the ocurrence of synergism of mixtures for alternative products to the fungicides for the control of the green mold (Penicillium digitatum in post-harvest citrus fruits. The efficiency of ten products, tested individually, and thirty five combinations among them, in pairs, were compared to thiabendazole and control, with and without inoculation. The products didn't present a synergism effect, except the mixture sodium carbonate + boric acid, that had a disease control of 93%. The products, sodium carbonate and boric acid controled 78 and 87%, respectively. The sodium bicarbonate, sodium methabisulphite and the mixtures of sodium bicarbonate + boric acid, sodium carbonate + potassium carbonate, sodium carbonate + potassium sorbate, sodium bicarbonate + sodium carbonate had a disease control of 92%, 77%, 81%, 77%, 75% and 71%, respectively. The fungicide treatment with thiabendazole used by standard had a whole disease control.

  8. What makes virtual agents believable?

    Science.gov (United States)

    Bogdanovych, Anton; Trescak, Tomas; Simoff, Simeon

    2016-01-01

    In this paper we investigate the concept of believability and make an attempt to isolate individual characteristics (features) that contribute to making virtual characters believable. As the result of this investigation we have produced a formalisation of believability and based on this formalisation built a computational framework focused on simulation of believable virtual agents that possess the identified features. In order to test whether the identified features are, in fact, responsible for agents being perceived as more believable, we have conducted a user study. In this study we tested user reactions towards the virtual characters that were created for a simulation of aboriginal inhabitants of a particular area of Sydney, Australia in 1770 A.D. The participants of our user study were exposed to short simulated scenes, in which virtual agents performed some behaviour in two different ways (while possessing a certain aspect of believability vs. not possessing it). The results of the study indicate that virtual agents that appear resource bounded, are aware of their environment, own interaction capabilities and their state in the world, agents that can adapt to changes in the environment and exist in correct social context are those that are being perceived as more believable. Further in the paper we discuss these and other believability features and provide a quantitative analysis of the level of contribution for each such feature to the overall perceived believability of a virtual agent.

  9. 46 CFR Sec. 2 - General Agents' authority.

    Science.gov (United States)

    2010-10-01

    ... RESPONSIBILITY OF GENERAL AGENTS TO UNDERTAKE EMERGENCY REPAIRS IN FOREIGN PORTS Sec. 2 General Agents' authority. The General Agents are hereby delegated authority to undertake for the account of the...

  10. Interactions of ionic and nonionic contrast agents with thrombolytic agents

    International Nuclear Information System (INIS)

    Both the ionic and nonionic intravascular contrast media have been used before and after the administration of thrombolytic agents to evaluate clot lysis during angioplasty and the treatment of myocardial infarction. In experimental animal models, the authors found that the clot lytic efficacy of streptokinase, streptokinase-plasminogen complex, and tissue plasminogen activator (t-PA) is markedly augmented if these agents are administered within 1 hour after the angiographic producers. Furthermore, contrast agents injected after the administration of t-Pa exhibit a synergistic action. In stimulated models administration of one ionic contrast medium (Angiovist, Berlex, Wayne, NJ) and two nonionic contrast agents (Isovue-370, Squibb Diagnostics, New Brunswick, NJ; Omnipaque-350, Winthrop, NY) 15 minutes before the administration of t-PA resulted in marked enhancement of the lytic activity. Although the mechanism of this interaction is unknown at this time, it should be taken into consideration in the treatment of patients with myocardial infarction, in whom contrast agents are continually used to evaluate the therapeutic lysis. Furthermore, this interaction may be partly related to the therapeutic efficacy and/or hemorrhagic actions observed

  11. Geo-Agents: Design and Implement

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Geo-Agents, a multi-agent system that processes distr ib utedgeospatial information and geospatial service was presented. Firstly, the requirement for distributed geographical information process was discussed, and the architecture of Geo-Agents was introduced. Then in-depth discussions were r aised on agent system implementation, such as the basic agent, agent advertising , message passing, and collaborating. An example was also given to explain the p roblem solving process.

  12. Special issue about advances in Physical Agents

    OpenAIRE

    Cazorla Quevedo, Miguel Ángel; Matellán Olivera, Vicente

    2011-01-01

    Nowadays, there are a lot of Spanish groups which are doing research in areas related with physical agents: they use agent-based technologies concepts, especially industrial applications, robotics and domotics (physical agents) and applications related to the information society, (software agents) highlighting the similarities and synergies among physical and software agents. In this special issue we will show several works from those groups, focusing on the recent advances in Physical Agents.

  13. Learning by Observation of Agent Software Images

    OpenAIRE

    Costa, Paulo Roberto; Botelho, Luís Miguel

    2014-01-01

    Learning by observation can be of key importance whenever agents sharing similar features want to learn from each other. This paper presents an agent architecture that enables software agents to learn by direct observation of the actions executed by expert agents while they are performing a task. This is possible because the proposed architecture displays information that is essential for observation, making it possible for software agents to observe each other. The agent architecture support...

  14. Colitis associated with biological agents

    Directory of Open Access Journals (Sweden)

    Hugh James Freeman

    2012-01-01

    Full Text Available In the past, there has been considerable focus on a host of drugs and chemicals that may produce colonic toxicity. Now, a variety of new biological monoclonal antibody agents, usually administered by infusion, have appeared in the clinical realm over the last decade or so to treat different chronic inflammatory or malignant disorders.For some of these agents, adverse effects have been documented, including apparently new forms of immune-mediated inflammatory bowel disease. In some, only limited symptoms have been recorded, but in others, severe colitis with serious complications, such as bowel perforation has been recorded. In others, adverse effects may have a direct vascular or ischemic basis, while other intestinal effects may be related to a superimposed infection. Some new onset cases of ulcerative colitis or Crohn’s disease may also be attributed to the same agents used to treat these diseases, or be responsible for disease exacerbation. Dramatic and well documented side effects have been observed with ipilimumab, a humanized monoclonal antibody developed to reduce and overcome cytotoxic T-lymphocyte antigen 4, a key negative feedback regulator of the T-cell anti-tumor response. This agent has frequently been used in the treatment of different malignancies, notably, malignant melanoma. Side effects with this agent occur in up to 40% and these are believed to be largely immune-mediated. One of these is a form of enterocolitis that may be severe, and occasionally, fatal. Other agents include rituximab (an anti-CD20 monoclonal antibody, bevacizumab (a monoclonal antibody against the vascular endothelial growth factor and anti-tumor necrosis factor agents, including infliximab, adalimumab and etanercept.

  15. A multi-agent architecture for geosimulation of moving agents

    Science.gov (United States)

    Vahidnia, Mohammad H.; Alesheikh, Ali A.; Alavipanah, Seyed Kazem

    2015-10-01

    In this paper, a novel architecture is proposed in which an axiomatic derivation system in the form of first-order logic facilitates declarative explanation and spatial reasoning. Simulation of environmental perception and interaction between autonomous agents is designed with a geographic belief-desire-intention and a request-inform-query model. The architecture has a complementary quantitative component that supports collaborative planning based on the concept of equilibrium and game theory. This new architecture presents a departure from current best practices geographic agent-based modelling. Implementation tasks are discussed in some detail, as well as scenarios for fleet management and disaster management.

  16. Sensors for detecting biological agents

    Directory of Open Access Journals (Sweden)

    Kim E. Sapsford

    2008-03-01

    Full Text Available Biological agents including viruses, bacteria, and other naturally occurring pathogenic organisms, along with the toxins they produce, are considered far harder to detect and defend against than chemical agents. Here we provide an overview of the predominant molecular sensing technologies for the detection of these agents. This includes biosensing strategies based upon use of antibodies, genomic analysis, biochemical testing, other recognition interactions, and cellular-based responses. We survey some popular sensing approaches, illustrate them with current examples showing how they have been applied, and discuss their intrinsic benefits and potential liabilities. Lastly, within the context of security applications, some approaches for integrating sensing technologies into field-portable devices are discussed.

  17. Agent review phase one report.

    Energy Technology Data Exchange (ETDEWEB)

    Zubelewicz, Alex Tadeusz; Davis, Christopher Edward; Bauer, Travis LaDell

    2009-12-01

    This report summarizes the findings for phase one of the agent review and discusses the review methods and results. The phase one review identified a short list of agent systems that would prove most useful in the service architecture of an information management, analysis, and retrieval system. Reviewers evaluated open-source and commercial multi-agent systems and scored them based upon viability, uniqueness, ease of development, ease of deployment, and ease of integration with other products. Based on these criteria, reviewers identified the ten most appropriate systems. The report also mentions several systems that reviewers deemed noteworthy for the ideas they implement, even if those systems are not the best choices for information management purposes.

  18. Dopamine agents for hepatic encephalopathy

    DEFF Research Database (Denmark)

    Junker, Anders Ellekær; Als-Nielsen, Bodil; Gluud, Christian;

    2014-01-01

    BACKGROUND: Patients with hepatic encephalopathy may present with extrapyramidal symptoms and changes in basal ganglia. These changes are similar to those seen in patients with Parkinson's disease. Dopamine agents (such as bromocriptine and levodopa, used for patients with Parkinson's disease) have...... therefore been assessed as a potential treatment for patients with hepatic encephalopathy. OBJECTIVES: To evaluate the beneficial and harmful effects of dopamine agents versus placebo or no intervention for patients with hepatic encephalopathy. SEARCH METHODS: Trials were identified through the Cochrane...... the trials followed participants after the end of treatment. Only one trial reported adequate bias control; the remaining four trials were considered to have high risk of bias. Random-effects model meta-analyses showed that dopamine agents had no beneficial or detrimental effect on hepatic...

  19. Multi-Agent Software Engineering

    International Nuclear Information System (INIS)

    This paper proposed an alarm-monitoring system for people based on multi-agent using maps. The system monitors the users physical context using their mobile phone. The agents on the mobile phones are responsible for collecting, processing and sending data to the server. They can determine the parameters of their environment by sensors. The data are processed and sent to the server. On the other side, a set of agents on server can store this data and check the preconditions of the restrictions associated with the user, in order to trigger the appropriate alarms. These alarms are sent not only to the user who is alarmed to avoid the appeared restriction, but also to his supervisor. The proposed system is a general purpose alarm system that can be used in different critical application areas. It has been applied for monitoring the workers of radiation sites. However, these workers can do their activity tasks in the radiation environments safely

  20. Monitoring presence of chemical agents

    International Nuclear Information System (INIS)

    The specification describes a case for use with a hand-portable chemical agent detector for continuously monitoring an atmosphere for the presence of predetermined chemical agents. The detector having means for ionizing air samples and providing at an output terminal electrical signals representative of the mobility spectrum of ionized chemical vapours produced by the ionizing means. The case comprises means for defining a chamber in the case for supporting and removably enclosing the detector, means for communicating ambient atmosphere to the chamber, electrical circuit means in the case, the circuit means being adapted to be detachably connected to the detector output terminal when the detector is positioned in the chamber and being responsive to the electrical signals for producing an alarm signal when the signals detect a chemical agent concentration in the atmosphere exceeding a predetermined concentration level, and alarm means responsive to the alarm signal. (author)

  1. Erythropoietic agents and the elderly.

    Science.gov (United States)

    Agarwal, Neeraj; Prchal, Josef T

    2008-10-01

    Erythropoietin (Epo) is a peptide hormone that stimulates erythropoiesis. There are several agents in clinical use and in development that either act as ligands for the cell surface receptors of Epo or promote Epo production, which stimulates erythropoiesis. These are known as erythropoietic agents. The agents already in use include epoetin alfa, epoetin beta, and darbepoetin alfa. Newer agents under active investigation include continuous erythropoietin receptor activator (CERA) or proline hydroxylase inhibitors that increase hypoxia-inducible factor-1 (HIF-1), thereby stimulating Epo production and iron availability and supply. Erythropoietic agents have been shown to promote neuronal regeneration and to decrease post-stroke infarct size in mouse models. They have also been reported to shorten survival when used to treat anemia in many cancer patients and to increase thromboembolism. In contrast, rapid decrease of Epo levels as observed in astronauts and high-altitude dwellers upon rapid descent to sea level leads to the decrease of erythroid mass, a phenomenon known as "neocytolysis." The relative decrease in the serum Epo level is known to occur in some subjects with otherwise unexplained anemia of aging. Anemia by itself is a predictor of poor physical function in the elderly and is a significant economic burden on society. One out of every five persons in the United States will be elderly by 2050. Erythropoietic agents, by preventing and treating otherwise unexplained anemias of the elderly and anemia associated with other disease conditions of the elderly, have the potential to improve the functional capacity and to decrease the morbidity and mortality in the elderly, thereby alleviating the overall burden of medical care in society. PMID:18809098

  2. Autonomous sensor manager agents (ASMA)

    Science.gov (United States)

    Osadciw, Lisa A.

    2004-04-01

    Autonomous sensor manager agents are presented as an algorithm to perform sensor management within a multisensor fusion network. The design of the hybrid ant system/particle swarm agents is described in detail with some insight into their performance. Although the algorithm is designed for the general sensor management problem, a simulation example involving 2 radar systems is presented. Algorithmic parameters are determined by the size of the region covered by the sensor network, the number of sensors, and the number of parameters to be selected. With straight forward modifications, this algorithm can be adapted for most sensor management problems.

  3. An overview of inotropic agents.

    Science.gov (United States)

    Vroom, Margreeth B

    2006-09-01

    The use of inotropic agents has been surrounded by many controversies. Recent guidelines for the treatment of patients with chronic and acute heart failure have elucidated some of the issues, but many remain. As a result, a substantial variability in the use of agents between institutions and caregivers remains, which mainly results from the lack of uniform data in the literature. Prospective randomized trials with a long-term follow-up and sufficient power are clearly needed, and a number of trials are currently in progress. PMID:16959760

  4. Peróxido de hidrogênio como agente despirogenizante de componentes para produtos médico-hospitalares

    Directory of Open Access Journals (Sweden)

    Pinto Terezinha de Jesus A.

    1995-01-01

    Full Text Available A atual busca de solventes alternativos aos fluorados, frente ao problema de depleção de ozônio da estratosfera, obriga a desenvolvimentos de processos aplicáveis à fabricação de produtos médico-hospitalares. Frente ao desafio, e considerando a água estar sendo opção de escolha de outros segmentos industriais, preocupa a rápida proliferação microbiana na mesma, tornando-a fonte potencial de endotoxinas. Tal risco incompatibiliza-se por exemplo, com a produção de itens destinados ao emprego em procedimentos cirúrgicos da área cardiovascular. Desta forma foi ralizada pesquisa com o objetivo de investigar possibilidade de emprego da água como agente de limpeza de componentes para tais produtos, desde que incorporada de peróxido de hidrogênio. Trabalhou-se inoculando água e soluções de peróxido com níveis de 0,1, 0,25, 0,5 e 1,0 UE/ml; obteve-se a confirmação de efetividade de ação a concentração de 5% de peróxido de hidrogênio, através de determinação analítica pelo método "in vitro". Investigou-se, em peças injetadas em policarbonato, destinadas a fabricação de oxigenadores e reservatórios sangüíneos, inoculadas com endotoxina, a efetividade no uso do peróxido. Os resultados permitem concluir pela possibilidade de sucesso do processo proposto, seja pelo aspecto biológico ou pela remoção de sujidades.

  5. Peróxido de hidrogênio como agente despirogenizante de componentes para produtos médico-hospitalares

    Directory of Open Access Journals (Sweden)

    Terezinha de Jesus A. Pinto

    1995-02-01

    Full Text Available A atual busca de solventes alternativos aos fluorados, frente ao problema de depleção de ozônio da estratosfera, obriga a desenvolvimentos de processos aplicáveis à fabricação de produtos médico-hospitalares. Frente ao desafio, e considerando a água estar sendo opção de escolha de outros segmentos industriais, preocupa a rápida proliferação microbiana na mesma, tornando-a fonte potencial de endotoxinas. Tal risco incompatibiliza-se por exemplo, com a produção de itens destinados ao emprego em procedimentos cirúrgicos da área cardiovascular. Desta forma foi ralizada pesquisa com o objetivo de investigar possibilidade de emprego da água como agente de limpeza de componentes para tais produtos, desde que incorporada de peróxido de hidrogênio. Trabalhou-se inoculando água e soluções de peróxido com níveis de 0,1, 0,25, 0,5 e 1,0 UE/ml; obteve-se a confirmação de efetividade de ação a concentração de 5% de peróxido de hidrogênio, através de determinação analítica pelo método "in vitro". Investigou-se, em peças injetadas em policarbonato, destinadas a fabricação de oxigenadores e reservatórios sangüíneos, inoculadas com endotoxina, a efetividade no uso do peróxido. Os resultados permitem concluir pela possibilidade de sucesso do processo proposto, seja pelo aspecto biológico ou pela remoção de sujidades.

  6. Building Multi-Agent Systems Using Jason

    DEFF Research Database (Denmark)

    Boss, Niklas Skamriis; Jensen, Andreas Schmidt; Villadsen, Jørgen

    2010-01-01

    Technical University of Denmark (DTU). A part of this course was a short introduction to the multi-agent framework Jason, which is an interpreter for AgentSpeak, an agent-oriented programming language. As the final project in this course a solution to the Multi-Agent Programming Contest from 2007, the Gold...

  7. Using Agent to Coordinate Web Services

    CERN Document Server

    Liu, C H; Chen, Jason J Y

    2009-01-01

    Traditionally, agent and web service are two separate research areas. We figure that, through agent communication, agent is suitable to coordinate web services. However, there exist agent communication problems due to the lack of uniform, cross-platform vocabulary. Fortunately, ontology defines a vocabulary. We thus propose a new agent communication layer and present the web ontology language (OWL)-based operational ontologies that provides a declarative description. It can be accessed by various engines to facilitate agent communication. Further, in our operational ontologies, we define the mental attitudes of agents that can be shared among other agents. Our architecture enhanced the 3APL agent platform, and it is implemented as an agent communication framework. Finally, we extended the framework to be compatible with the web ontology language for service (OWL-S), and then develop a movie recommendation system with four OWL-S semantic web services on the framework. The benefits of this work are: 1) dynamic ...

  8. Medidas de pobreza: un enfoque alternativo

    Directory of Open Access Journals (Sweden)

    Luisa L. Lazzari

    2006-01-01

    Full Text Available Una medida creíble de pobreza e indigencia puede ser un poderoso instrumento para concentrar la atención del policymaker en las condiciones de vida de los pobres. Las opciones elegidas para fijarlas tienen gran importancia para las decisiones políticas a tomar. El método indirecto o enfoque del ingreso parte de la valorización de una Canasta Básica Alimentaria (CBA que determina la cantidad de calorías mínimas necesarias para satisfacer las necesidades biológicas básicas de un individuo. Una canasta rígida de bienes, y un único valor de cada mercancía, no muestra fidedignamente la realidad. El cálculo de la CBA tradicional, presenta dificultades a la hora de identificar de manera rigurosa las personas que son indigentes y las que no lo son. Las herramientas que provee la teoría de los conjuntos borrosos, permiten modelar situaciones con alto contenido subjetivo o incierto. El objetivo de este trabajo es analizar la metodología existente para el cálculo de la CBA, tratar de identificar sus falencias y plantear un nuevo enfoque en su armado y valuación. El modelo propuesto se aplica al caso del cálculo de la Canasta Básica Alimentaria Fuzzy para los meses de noviembre y diciembre de 2004 para luego comparar los resultados obtenidos con el enfoque clásico.

  9. Tratamentos alternativos para o combate à Varroa

    OpenAIRE

    Vilas-Boas, Miguel

    2006-01-01

    Mais de 20 anos após a detecção em Portugal do ácaro da Varroa Jacobsoni, a sua coexistência com a abelha Apis Mellifera continua a ser um desafio constante para o apicultor provocando continuadamente baixas no efectivo apícola.

  10. Tc-99m imaging agents

    International Nuclear Information System (INIS)

    A wide range of pharmaceuticals for labeling with Tc-99m, developed by the Soreq Radiopharmaceuticals Department, is described. Details of the production and quality control of 13 kits are given, as well as the range of results required for consistently high quality imaging agents

  11. Antibacterial activities of antineoplastic agents.

    OpenAIRE

    Bodet, C A; Jorgensen, J H; Drutz, D J

    1985-01-01

    Fourteen antineoplastic agents were examined for in vitro antibacterial activity against 101 aerobic and anaerobic bacterial isolates representing indigenous human microflora and selected opportunistic pathogens. Only 5-fluorouracil, mitomycin, and etoposide demonstrated inhibitory effects at achievable plasma concentrations, while the remaining drugs lacked appreciable antibacterial activities.

  12. Raspberry Pi for secret agents

    CERN Document Server

    Sjogelid, Stefan

    2015-01-01

    This book is an easy-to-follow guide with practical examples in each chapter. Suitable for the novice and expert alike, each topic provides a fast and easy way to get started with exciting applications and also guides you through setting up the Raspberry Pi as a secret agent toolbox.

  13. Identity Management in Agent Systems

    NARCIS (Netherlands)

    Brazier, F.M.T.; Groot, de D.R.A.

    2006-01-01

    If agent-based applications are to be used in large scale, open environments, security is a main issue; digital identity management (DIDM) an essential element. DIDM is needed to be able to determine the rights and obligations of the four main

  14. Kriitikute lemmikfilm on "Agent Sinikael"

    Index Scriptorium Estoniae

    2003-01-01

    Eesti Filmiajakirjanike Ühing andis kümnendat korda välja auhinda Aasta film 2002. Parimaks filmiks tunnistati mängufilm "Agent Sinikael" : režissöör Marko Raat. Viimane sai preemiaks Neitsi Maali kuju ja 12 000 krooni

  15. Improving agents using reliable communication

    Science.gov (United States)

    Zheng, Jinbin

    2013-10-01

    Recent advances in introspective modalities and linear time symmetries do not necessarily obviate the need for web browsers [1]. In our research, we disprove the exploration of agents, which embodies the appropriate principles of electrical engineering. Here we demonstrate that even though semaphores and XML [1] are mostly incompatible, randomized algorithms and write-back caches are mostly incompatible.

  16. Foodborne illness and microbial agents

    Science.gov (United States)

    Foodborne illnesses result from the consumption of food containing microbial agents such as bacteria, viruses, parasites or food contaminated by poisonous chemicals or bio-toxins. Pathogen proliferation is due to nutrient composition of foods, which are capable of supporting the growth of microorgan...

  17. Bridging humans via agent networks

    International Nuclear Information System (INIS)

    Recent drastic advance in telecommunication networks enabled the human organization of new class, teleorganization, which differ from any existing organization in that the organization which is easy to create by using telecommunication networks is virtual and remote, that people can join multiple organizations simultaneously, and that the organization can involve people who may not know each other. In order to enjoy the recent advance in telecommunication, the agent networks to help people organize themselves are needed. In this paper, an architecture of agent networks, in which each agent learns the preference or the utility functioin of the owner, and acts on behalf of the owner in maintaining the organization, is proposed. When an agent networks supports a human organization, the conventional human interface is divided into personal and social interfaces. The functionalities of the social interface in teleconferencing and telelearning were investigated. In both cases, the existence of B-ISDN is assumed, and the extension to the business meeting scheduling using personal handy phone (PHS) networks with personal digital assistant (PDA) terminals is expected. These circumstances are described. Mutual selection protocols (MSP) and their dynamic properties are explained. (K.I.)

  18. Anchor Toolkit - a secure mobile agent system

    OpenAIRE

    Mudumbai, Srilekha S.; Johnston, William; Essiari, Abdelilah

    2008-01-01

    Mobile agent technology facilitates intelligent operation in software systems with less human interaction. Major challenge to deployment of mobile agents include secure transmission of agents and preventing unauthorized access to resources between interacting systems, as either hosts, or agents, or both can act maliciously. The Anchor toolkit, designed by LBNL, handles the transmission and secure management of mobile agents in a heterogeneous distributed computing environment. It provide...

  19. Providing Reliable Agents for Electronic Commerce

    OpenAIRE

    Straßer, Markus; Rothermel, Kurt; Maihöfer, Christian

    1998-01-01

    It is widely agreed that mobile agents in conjunction with WWW technology will provide the technical foundation for future electronic commerce. A prerequisite for the use of mobile agents in a commercial environment is, that agents have to be executed reliable, independent of communication and node failure. In this paper, we first present a recently proposed fault-tolerant protocol to ensure the exactly-once execution of an agent by monitoring the agents execut...

  20. Halide test agent replacement study

    Energy Technology Data Exchange (ETDEWEB)

    Banks, E.M.; Freeman, W.P.; Kovach, B.J. [and others

    1995-02-01

    The intended phaseout of the chlorofluorocarbons (CFCs) from commercial use required the evaluation of substitute materials for the testing for leak paths through both individual adsorbers and installed adsorbent banks. The American Society of Mechanical Engineers (ASME) Committee on Nuclear Air and Gas Treatment (CONAGT) is in charge of maintaining the standards and codes specifying adsorbent leak test methods for the nuclear safety related air cleaning systems. The currently published standards and codes cite the use of R-11, R-12 and R-112 for leak path test agents. All of these compounds are CFCs. There are other agencies and organizations (USDOE, USDOD and USNRC) also specifying testing for leak paths or in some cases for special life tests using the above compounds. The CONAGT has recently developed criteria for the suitability evaluation of substitute test agents. On the basis of these criteria, several compounds were evaluated for their acceptability as adsorbent bed leak and life test agents. The ASME CONAGT Test Agent Qualification Criteria. The test agent qualification is based on the following parameters: (1) Similar retention times on activated carbons at the same concentration levels as one of the following: R-11, R-12, R-112 or R-112a. (2) Similar lower detection limit sensitivity and precision in the concentration range of use as R-11, R-12, R-112 and R-112a. (3) Gives the same in-place leak test results as R-11, R-12, R-112, or R-112a. (4) Chemical and radiological stability under the use conditions. (5) Causes no degradation of the carbon and its impregnant or of the other NATS components under the use conditions. (6) Is listed in the USEPA Toxic Substances Control Act (TSCA) inventory for commercial use.

  1. Biologic agents in juvenile spondyloarthropathies.

    Science.gov (United States)

    Katsicas, María Martha; Russo, Ricardo

    2016-01-01

    The juvenile spondyloarthropathies (JSpA) are a group of related rheumatic diseases characterized by involvement of peripheral large joints, axial joints, and entheses (enthesitis) that begin in the early years of life (prior to 16(th) birthday).The nomenclature and concept of spondyloarthropathies has changed during the last few decades. Although there is not any specific classification of JSpA, diseases under the spondyloarthropathy nomenclature umbrella in the younger patients include: the seronegative enthesitis and arthropathy (SEA) syndrome, juvenile ankylosing spondylitis, reactive arthritis, and inflammatory bowel disease-associated arthritis. Moreover, the ILAR criteria for Juvenile Idiopathic Arthritis includes two categories closely related to spondyloarthritis: Enthesitis-related arthritis and psoriatic arthritis.We review the pathophysiology and the use of biological agents in JSpA. JSpA are idiopathic inflammatory diseases driven by an altered balance in the proinflammatory cytokines. There is ample evidence on the role of tumor necrosis factor (TNF) and interleukin-17 in the physiopathology of these entities. Several non-biologic and biologic agents have been used with conflicting results in the treatment of these complex diseases. The efficacy and safety of anti-TNF agents, such as etanercept, infliximab and adalimumab, have been analysed in controlled and uncontrolled trials, usually showing satisfactory outcomes. Other biologic agents, such as abatacept, tocilizumab and rituximab, have been insufficiently studied and their role in the therapy of SpA is uncertain. Interleukin-17-blocking agents are promising alternatives for the treatment of JSpA patients in the near future. Recommendations for the treatment of patients with JSpA have recently been proposed and are discussed in the present review. PMID:26968522

  2. Herbicidas alternativos para controle de biótipos de Conyza bonariensis e C. canadensis resistentes ao glyphosate Alternative herbicides to control glyphosate-resistant biotypes of Conyza bonariensis and C. canadensis

    Directory of Open Access Journals (Sweden)

    M.S. Moreira

    2010-01-01

    Full Text Available Após sucessivos anos, aplicações do herbicida glyphosate em pomares de citros no Estado de São Paulo selecionaram biótipos resistentes de Conyza bonariensis e C. canadensis. Na ocorrência de plantas daninhas resistentes em uma área agrícola, tornam-se necessárias mudanças nas práticas de manejo para obtenção de adequado controle das populações resistentes, bem como para a redução da pressão de seleção sobre outras espécies. Assim, este trabalho foi realizado com o objetivo de identificar herbicidas alternativos para controle de biótipos de Conyza spp. resistentes ao herbicida glyphosate, com aplicações em diferentes estádios fenológicos da planta daninha. Três experimentos foram conduzidos em campo, em pomares de citros em formação, sobre plantas de buva em estádio fenológico de dez folhas e no pré-florescimento. Para plantas no estádio de dez folhas, controle satisfatório foi obtido com aplicações de glyphosate + bromacil + diuron (1.440 + 1.200 + 1.200 g ha-1, glyphosate + atrazina (1.440 + 1.500 g ha-1 e glyphosate + diuron (1.440 + 1.500 g ha-1. Quando em estádio de pré-florescimento de Conyza spp., a aplicação do herbicida amônio-glufosinato, na dose de 400 g ha-1, isolado ou associado a MSMA, bromacil+diuron, metsulfuron, carfentrazone e paraquat, foi a alternativa viável para controle dos biótipos resistentes ao glyphosate.After successive years, glyphosate applications on São Paulo-Brazil citrus orchards selected resistant biotypes of Conyza bonariensis and C. canadensis. The occurrence of herbicide-resistant weed biotypes at some agricultural area makes it necessary to change the management practices to reach effective control of the selected resistant populations, as well as to reduce selection pressure on the other species. Thus, this work aimed to identify the alternative herbicides to control glyphosate-resistant biotypes of Conyza spp., with applications at different weed phenological

  3. Rastreabilidade da farinha de carne e ossos bovinos em ovos de poedeiras alimentadas com ingredientes alternativos Traceability of bovine meat and bone meal in eggs from laying hens fed with alternative ingredients

    Directory of Open Access Journals (Sweden)

    Juliana Célia Denadai

    2009-01-01

    Full Text Available O objetivo deste trabalho foi detectar traços de farinha de carne e ossos bovinos, em ovos de poedeiras alimentadas com dietas comerciais com inclusão de ingredientes vegetais alternativos e leveduras. A detecção foi feita pela técnica dos isótopos estáveis do carbono e do nitrogênio. Foram utilizadas 384 poedeiras, distribuídas aleatoriamente em oito tratamentos. Os tratamentos consistiram de uma dieta-controle - à base de milho e farelo de soja - e sete dietas com inclusão de farinha de carne e ossos bovinos, acrescidas ou não de outros ingredientes (farelo de trigo, quirera de arroz, farelo de algodão, glúten de milho, levedura de cana e levedura de cerveja. No 35º dia, foram tomados aleatoriamente 24 ovos por tratamento: 12 para análise de ovo e 12 para análise de gema e albúmen, em separado. Após análise isotópica de carbono e nitrogênio, os resultados foram submetidos à análise multivariada de variância. As médias dos pares isotópicos dos ovos, gema e albúmen, em todos os tratamentos, diferiram daquelas do tratamento-controle. A técnica dos isótopos estáveis permite detectar, nos ovos, gema e albúmen, a farinha de carne e ossos bovinos utilizada na dieta de poedeiras, mesmo com a inclusão de outros ingredientes vegetais e leveduras.The objective of this work was to detect traces of the bovine meat and bones meal in eggs of laying hens fed on commercial diets including alternative plant ingredients and yeast. The bovine meal detection was performed through carbon and nitrogen stable isotope technique. Three hundred eighty-four laying hens were randomly distributed in eight treatments. Treatments consisted of one control diet - a corn-and-soybean based meal - and seven diets with bovine meat and bone meal, including or not other ingredients (wheat bran, rice, cottonseed meal, corn gluten meal, sugarcane yeast and brewer yeast. At the 35th day, 24 eggs per treatment were randomly collected, 12 for egg analyses

  4. Métodos alternativos de restrição alimentar na muda forçada de poedeiras comerciais Alternative methods of feed restriction in the forced molt of laying hens

    Directory of Open Access Journals (Sweden)

    Karina Márcia Ribeiro de Souza

    2010-02-01

    Full Text Available Foram avaliados métodos alternativos de restrição alimentar qualitativa em comparação à técnica convencional de muda forçada. Utilizaram-se 480 galinhas Babcock de 78 semanas distribuídas em três níveis de restrição alimentar (100, 75 e 50% e três percentuais de redução de peso corporal (15, 20 e 25%, cada um com cinco repetições de 32 aves. Quando as aves atingiram o percentual de redução de peso corporal, determinaram-se o volume globular, os percentuais de ovário, oviduto, moela, intestino e gordura abdominal e o comprimento de oviduto. A partir do 28º dia e durante cinco períodos de 28 dias, observaram-se as características quantitativas e qualitativas de produção pós-muda. O maior período de restrição foi observado no nível de 50% e proporcionou menores percentuais de gordura abdominal (0,66%, ovário (0,60%, oviduto (0,77% e comprimento de oviduto (32 cm. O percentual de produção de ovos foi maior no primeiro período para as aves submetidas aos métodos de 75 e 100% de restrição com 15 e 20% de redução de peso, respectivamente. Entretanto, para as aves com 50% de restrição e 25% de redução de peso, as maiores produções (86,80 e 83,20% ocorreram no quarto e quinto períodos. A restrição alimentar qualitativa, em 50% da dieta com ração e casca de arroz, por ser menos agressiva, proporciona melhores condições de bem-estar e facilita o manejo da granja.Alternative methods were assessed of qualitative feed restriction compared to the conventional forced molt technique. Four hundred and eighty Babcock hens were used distributed in three levels of feed restriction (100, 75 and 50% and three body weight reduction percentages (15, 20 and 25%, with five replications of 32 hens. When the birds reached the body weight reduction percentage the packed cell volume, percentages of ovary, oviduct, gizzard, intestine, abdominal fat and oviduct length were determined. Starting on day 28 and during five 28-day

  5. Harvest season influences on the quality of tomato grown in alternative systems / Influência das épocas de colheita na qualidade de tomate cultivado em sistemas alternativos

    Directory of Open Access Journals (Sweden)

    Regina Marta Evangelista

    2009-03-01

    Full Text Available On tomato production in Brazil, around two/thirties is designated to consume “in nature”. Thus, the skin aspect and its quality became an important factor on buying decision. Tomato presents high mass of water, and its quality depends on temperature and humidity variation. Water loss brings weight and fruit aspect loss, affecting the quality. This work aimed to verify the influence of harvest season on the fruit quality grown in alternative, organic and biodynamic systems. It was evaluated tomato quality characteristics, including mass loss, texture, pH, titratable acidity, soluble solids. The cycle stage of the tomato plant interferes on fruit quality. The third, fourth and fifth harvests were those which showed the highest values to quality parameters, with more fresh mass fruit. The sixth harvest showed fruits with high total soluble solids and sugar contents. On the evaluation of mass loss on the three harvest seasons, it was observed that on the first harvest there was a smaller loss. The period of harvest cycle interferes on the time of storage, and fruitd harvested on the first have more conservation time in relation to the other onesNa produção de tomate no Brasil, aproximadamente dois terços são destinados ao consumo “in natura”. Assim, o aspecto externo e a sua qualidade tornam-se um fator importante na decisão de compra. O tomate apresenta elevado conteúdo de água, estando sujeito às variações de temperatura e umidade relativa do ambiente onde se encontra. A perda de água ocasiona perda de peso e aparência do fruto, afetando a qualidade. O objetivo deste trabalho foi verificar a influência das épocas de colheita na qualidade de frutos de tomateiro cultivados em sistemas alternativos, orgânico e biodinâmico. Foram avaliadas características de qualidade dos frutos de tomate, que incluíram perda de massa, textura, pH, sólidos solúveis, acidez titulável e açúcares redutores. O estádio do ciclo do tomateiro

  6. Osmocote® e substratos alternativos na produção de mudas de maracujazeiro-amarelo Osmocote® and alternative substrates for growth of yellow passion fruit seedlings

    Directory of Open Access Journals (Sweden)

    Vander Mendonça

    2004-08-01

    Full Text Available A produção de mudas de boa qualidade ainda é um grande desafio na cultura do maracujazeiro. A utilização de substratos de qualidade com boa fertilização é um dos fatores que podem contribuir para enfrentá-lo. Assim, objetivou-se avaliar os efeitos de substratos alternativos e doses de Osmocote® na produção de mudas de maracujazeiro-amarelo. O experimento foi conduzido em condições de viveiro telado com sombrite 50%, localizado no Pomar da Universidade Federal de Lavras (UFLA. O delineamento experimental utilizado foi em blocos casualizados em esquema fatorial 5x2, com quatro repetições e cinco plantas por parcela. Os tratamentos constituíram das seguintes doses de Osmocote® (15-10-10: 0; 3; 6; 9 e 12 kg.m-3 de substrato e das seguintes misturas de substratos: A (Plantmax® + areia + solo na proporção 1:1:2 v/v e B (esterco de curral + casca de café + carvão vegetal + areia + solo na proporção de 1:1:1:1:2 v/v. Foram avaliados altura das mudas, número de folhas, biomassa seca da parte aérea e raiz. Pelos resultados, verificou-se que a maior dose do Osmocote® (15-10-10 proporcionou obtenção de mudas de maracujazeiro de melhor qualidade e as misturas de substratos não apresentaram diferenças significativas na qualidade da muda.Growing seedlings of high quality is still a challenge for yellow passion fruit culture. The use of high quality and fertilization substrates is a way to cope with this challenge. This work had the objetive to evaluate the effects of alternative substrates and Osmocote® dosages in the production of yellow passion fruit seedlings. The experiment was carried out under nursery conditions with 50% of shadow at the Lavras Federal University (UFLA orchard. The experimental design was in randomized blocks in a two factors arrangement (5 x 2, with four replicates and five plants per plot. The treatments were different dosages of Osmocote® (15-10-10: 0; 3; 6; 9 and 12 kg.m-3 of substrate and different

  7. Migration Dynamics in Artificial Agent Societies

    Directory of Open Access Journals (Sweden)

    Harjot Kaur

    2014-02-01

    Full Text Available An Artificial Agent Society can be defined as a collection of agents interacting with each other for some purpose and/or inhabiting a specific locality, possibly in accordance to some common norms/rules. These societies are analogous to human and ecological societies, and are an expanding and emerging field in research about social systems. Social networks, electronic markets and disaster management organizations can be viewed as such artificial (open agent societies and can be best understood as computational societies. Members of such artificial agent societies are heterogeneous intelligent software agents which are operating locally and cooperating and coordinating with each other in order to achieve goals of an agent society. These artificial agent societies have some kind of dynamics existing in them in terms of dynamics of Agent Migration, Role-Assignment, Norm- Emergence, Security and Agent-Interaction. In this paper, we have described the dynamics of agent migration process, starting from the various types of agent migration, causes or reasons for agent migration, consequences of agent migration, and an agent migration framework to model the its behavior for migration of agents between societies.

  8. Laser interrogation of surface agents (LISA) for chemical agent reconnaissance

    Science.gov (United States)

    Higdon, N. S.; Chyba, Thomas H.; Richter, Dale A.; Ponsardin, Patrick L.; Armstrong, Wayne T.; Lobb, C. T.; Kelly, Brian T.; Babnick, Robert D.; Sedlacek, Arthur J., III

    2002-06-01

    Laser Interrogation of Surface Agents (LISA) is a new technique which exploits Raman scattering to provide standoff detection and identification of surface-deposited chemical agents. ITT Industries, Advanced Engineering and Sciences Division is developing the LISA technology under a cost-sharing arrangement with the US Army Soldier and Biological Chemical Command for incorporation on the Army's future reconnaissance vehicles. A field-engineered prototype LISA-Recon system is being designed to demonstrate on-the- move measurements of chemical contaminants. In this article, we will describe the LISA technique, data form proof-of- concept measurements, the LISA-Recon design, and some of the future realizations envisioned for military sensing applications.

  9. Aplicación de un modelo didáctico alternativo en la enseñanza y aprendizaje del contenido "plantas como sistemas autótrofos" : Análisis de su funcionalidad con relación a la construcción del conocimiento

    OpenAIRE

    Manfreda, Vilma T.; Acosta, María Cecilia; Delorenzi, Olga

    2012-01-01

    La investigación se centró en la aplicación de un modelo didáctico alternativo al tradicional, para la enseñanza de las Ciencias Naturales de un primer año de Educación Secundaria en Azul, Bs As. Consistió en la enseñanza y aprendizaje del contenido “Plantas como sistemas autótrofos”, con el objetivo de analizar dicha aplicación y su funcionalidad en relación al cambio conceptual, comparativamente al modelo didáctico tradicional. Metodológicamente se encuadró como estudio de caso; se registró...

  10. The New Agent: A Qualitative Study to Strategically Adapt New Agent Professional Development

    Science.gov (United States)

    Baker, Lauri M.; Hadley, Gregg

    2014-01-01

    The qualitative study reported here assessed the needs of agents related to new agent professional development to improve the current model. Agents who participated in new agent professional development within the last 5 years were selected to participate in focus groups to determine concerns and continued needs. Agents enjoyed networking and…

  11. CATS-based Agents That Err

    Science.gov (United States)

    Callantine, Todd J.

    2002-01-01

    This report describes preliminary research on intelligent agents that make errors. Such agents are crucial to the development of novel agent-based techniques for assessing system safety. The agents extend an agent architecture derived from the Crew Activity Tracking System that has been used as the basis for air traffic controller agents. The report first reviews several error taxonomies. Next, it presents an overview of the air traffic controller agents, then details several mechanisms for causing the agents to err in realistic ways. The report presents a performance assessment of the error-generating agents, and identifies directions for further research. The research was supported by the System-Wide Accident Prevention element of the FAA/NASA Aviation Safety Program.

  12. Biological effects of mutagenic agents

    International Nuclear Information System (INIS)

    There is an increasing body of evidence that mutagenic agents (biological, chemical and physical) play an important role in the etiology of human diseases. Mutations may occur in the germinal as well as in the somatic cells. Mutations of the germ cells may result on infertility or fertilization of damaged cells, the later leading to abortion or birth of a malformed fetus. Somatic-cells mutations may have various biological effects, depending on the period of the human life at which the mutation occurs. If it occurs during the prenatal life, a teratogenic or carcinogenic effect will be observed. If the somatic cell is damaged during the postnatal life, this will lead to neoplastic transformation. Therefore it is extremely important to know the mutagenic, teratogenic and carcinogenic effects of various biological, chemical and physical agents in order to eliminate them from our environment. (author). 13 refs, 4 figs, 1 tab

  13. Extension agents and conflict narratives

    DEFF Research Database (Denmark)

    Bond, Jennifer Lauren

    2016-01-01

    Purpose: This work investigated the narratives of development extensionists in relation to natural resource conflict, in order to understand the competing discourses surrounding the wicked problems of natural resource management in Laikipia County, Kenya. Methodology: Q methodology was used to...... professionals from government, non-government, faith-based and private organizations. Findings: Four factors were elicited from the data, labelled—A: ‘Improved Leadership’; B: ‘Resource-centred conflict’; C: ‘Improved Governance’; and D: ‘Improved Management’. Practical Implications: Narratives of neo...... resource conflict. Originality: This work contributes to a growing body of literature interested in the role of extension agents in conflict management. By applying Q methodology, this work has shown that while extension agents are involved in conflict management, their perceptions of these conflicts are...

  14. Agent Based Individual Traffic Guidance

    DEFF Research Database (Denmark)

    Wanscher, Jørgen

    This thesis investigates the possibilities in applying Operations Research (OR) to autonomous vehicular traffic. The explicit difference to most other research today is that we presume that an agent is present in every vehicle - hence Agent Based Individual Traffic guidance (ABIT). The next...... that the system can be divided into two separate constituents. The immediate dispersion, which is used for small areas and quick response, and the individual alleviation, which considers the longer distance decision support. Both of these require intrinsicate models and cost functions which at the...... beginning of the project were not previously considered. We define a special inseparable cost function and develop a solution complex capable of using this cost function. In relation to calibration and estimation of statistical models used for dynamic route guidance we worked with generating random number...

  15. [Infectious agents and autoimmune diseases].

    Science.gov (United States)

    Riebeling-Navarro, C; Madrid-Marina, V; Camarena-Medellín, B E; Peralta-Zaragoza, O; Barrera, R

    1992-01-01

    In this paper the molecular aspects of the relationships between infectious agents and autoimmune diseases, the mechanisms of immune response to infectious agents, and the more recent hypotheses regarding the cause of autoimmune diseases are discussed. The antigens are processed and selected by their immunogenicity, and presented by HLA molecules to the T cell receptor. These events initiate the immune response with the activation and proliferation of T-lymphocytes. Although there are several hypotheses regarding the cause of autoimmune diseases and too many findings against and in favor of them, there is still no conclusive data. All these hypothesis and findings are discussed in the context of the more recent advances. PMID:1615352

  16. Oral agents in multiple sclerosis.

    Science.gov (United States)

    Lorefice, L; Fenu, G; Frau, J; Coghe, G C; Marrosu, M G; Cocco, E

    2015-01-01

    Multiple sclerosis (MS) is a complex autoimmune disease of the central nervous system. Disease-modifying drugs licensed for MS treatment have been developed to reduce relapse rates and halt disease progression. The majority of current MS drugs involve regular, parenteral administration, affecting long-term adherence and thus reducing treatment efficacy. Over the last two decades great progress has been made towards developing new MS therapies with different modes of action and biologic effects. In particular, oral drugs have generated much interest because of their convenience and positive impact on medication adherence. Fingolimod was the first launched oral treatment for relapsing-remitting MS; recently, Teriflunomide and Dimethyl fumarate have also been approved as oral disease-modifying agents. In this review, we summarize and discuss the history, pharmacodynamics, efficacy, and safety of oral agents that have been approved or are under development for the selective treatment of MS. PMID:25924620

  17. Logical Theories for Agent Introspection

    DEFF Research Database (Denmark)

    Bolander, Thomas

    2004-01-01

    Artificial intelligence systems (agents) generally have models of the environments they inhabit which they use for representing facts, for reasoning about these facts and for planning actions. Much intelligent behaviour seems to involve an ability to model not only one's external environment but...... self-reference. In the standard approach taken in artificial intelligence, the model that an agent has of its environment is represented as a set of beliefs. These beliefs are expressed as logical formulas within a formal, logical theory. When the logical theory is expressive enough to allow...... introspective reasoning, the presence of self-reference causes the theory to be prone to inconsistency. The challenge therefore becomes to construct logical theories supporting introspective reasoning while at the same time ensuring that consistency is retained. In the thesis, we meet this challenge by devising...

  18. Injectable agents affecting subcutaneous fats.

    Science.gov (United States)

    Chen, David Lk; Cohen, Joel L; Green, Jeremy B

    2015-09-01

    Mesotherapy is an intradermal or subcutaneous injection of therapeutic agents to induce local effects, and was pioneered in Europe during the 1950s. For the past 2 decades, there has been significant interest in the use of mesotherapy for minimally invasive local fat contouring. Based on the theorized lipolytic effects of the agent phosphatidylcholine, initial attempts involved its injection into subcutaneous tissue. With further studies, however, it became apparent that the activity attributed to phosphatidylcholine mesotherapy was due to the adipolytic effects of deoxycholate, a detergent used to solubilize phosphatidylcholine. Since then, clinical trials have surfaced that demonstrate the efficacy of a proprietary formulation of deoxycholate for local fat contouring. Current trials on mesotherapy with salmeterol, a b-adrenergic agonist and lipolysis stimulator, are underway-with promising preliminary results as well. PMID:26566569

  19. Topical agents in burn care

    OpenAIRE

    Momčilović Dragan

    2002-01-01

    Introduction Understanding of fluid shifts and recognition of the importance of early and appropriate fluid replacement therapy have significantly reduced mortality in the early post burn period. After the bum patient successfully passes the resuscitation period, the burn wound represents the greatest threat to survival. History Since the dawn of civilization, man has been trying to find an agent which would help burn wounds heal, and at the same time, not harm general condition of the injure...

  20. Building Hybrid Soft Computing Agents

    Czech Academy of Sciences Publication Activity Database

    Neruda, Roman

    Anheim : ACTA Press, 2003 - (Castillo, O.), s. 7-11 ISBN 0-88986-347-4. [IASTED International Conference on Neural Networks and Computational Intelligence. Cancun (MX), 19.05.2003-21.05.2003] R&D Projects: GA ČR(CZ) GP201/03/P163 Institutional research plan: CEZ:AV0Z1030915 Keywords : evolutionary algorithms * multi - agent system s * hybrid methods Subject RIV: BA - General Mathematics

  1. MSA AGENT FOR MULTIMEDIA APPLICATIONS

    OpenAIRE

    Aruna Rani; A. K. Gautam

    2011-01-01

    The MSA Agent is the software developed to design rectangular and U slotted micro strip antenna.It is applied for the various applications such as satellite communications, UHF applications. Within the multimedia frequency range the developed software is tested and analyzed for various results. The software is developed using genetic algorithm. This provides extra flexibility and new capability to design rectangular and U slotted micro strip antenna for multimedia application also. The result...

  2. Provably Bounded-Optimal Agents

    OpenAIRE

    Russell, S J; Subramanian, D.

    1995-01-01

    Since its inception, artificial intelligence has relied upon a theoretical foundation centered around perfect rationality as the desired property of intelligent systems. We argue, as others have done, that this foundation is inadequate because it imposes fundamentally unsatisfiable requirements. As a result, there has arisen a wide gap between theory and practice in AI, hindering progress in the field. We propose instead a property called bounded optimality. Roughly speaking, an agent is boun...

  3. Autonomous Behavior of Computational Agents

    Czech Academy of Sciences Publication Activity Database

    Vaculín, Roman; Neruda, Roman

    Wien : Springer-Verlag, 2005 - (Ribiero, B.; Albrecht, R.; Dobnikar, A.; Pearson, D.; Steele, N.), s. 514-517 ISBN 3-211-24934-6. [ICANNGA'2005 /7./. Coimbra (PT), 21.03.2005-23.03.2005] R&D Projects: GA AV ČR 1ET100300419 Institutional research plan: CEZ:AV0Z10300504 Keywords : computational agents * autonomous behavior * reasoning Subject RIV: BA - General Mathematics

  4. Agent Simulation of Chain Bankruptcy

    OpenAIRE

    Yuichi Ikeda; Yoshi Fujiwara; Wataru Souma; Hideaki Aoyama; Hiroshi Iyetomi

    2007-01-01

    We have conducted an agent-based simulation of chain bankruptcy. The propagation of credit risk on a network, i.e., chain bankruptcy, is the key to nderstanding largesized bankruptcies. In our model, decrease of revenue by the loss of accounts payable is modeled by an interaction term, and bankruptcy is defined as a capital deficit. Model parameters were estimated using financial data for 1,077 listed Japanese firms. Simulations of chain bankruptcy on the real transaction network consisting o...

  5. Crimen organizado y agente encubierto

    OpenAIRE

    Herrero Reus, Ignacio

    2014-01-01

    Uno de los objetivos de la justicia penal actual es la lucha contra la criminalidad organizada, bien por su propia naturaleza de “crimen organizado”, bien porque presenta elementos trasnacionales que impiden su investigación a fondo. Todo ello exige la creación de recursos que permitan la investigación de dichos delitos, recursos como el de infiltración de los agentes policiales, objeto del trabajo.

  6. Dimensions and Issues of Mobile Agent Technology

    Directory of Open Access Journals (Sweden)

    Yashpal Singh

    2012-09-01

    Full Text Available Mobile Agent is a type of software system which acts “intelligently” on one’s behalf with the feature of autonomy, learning ability and most importantly mobility. Now mobile agents are gaining interest in the research community. In this article mobile agents will be addressed as tools for mobile computing. Mobile agents have been used in applications ranging from network management to information management. We present mobile agent concept, characteristics, classification, need, applications and technical constraints in the mobile technology. We also provide a brief case study about how mobile agent is used for information retrieval.

  7. Antagonistic formation motion of cooperative agents

    Institute of Scientific and Technical Information of China (English)

    卢婉婷; 代明香; 薛方正

    2015-01-01

    This paper investigates a new formation motion problem of a class of first-order multi-agent systems with antagonis-tic interactions. A distributed formation control algorithm is proposed for each agent to realize the antagonistic formation motion. A sufficient condition is derived to ensure that all agents make an antagonistic formation motion in a distributed manner. It is shown that all agents can be spontaneously divided into several groups, and agents in the same group collab-orate while agents in different groups compete. Finally, a numerical simulation is included to demonstrate our theoretical results.

  8. Agent planning in AgScala

    Science.gov (United States)

    Tošić, Saša; Mitrović, Dejan; Ivanović, Mirjana

    2013-10-01

    Agent-oriented programming languages are designed to simplify the development of software agents, especially those that exhibit complex, intelligent behavior. This paper presents recent improvements of AgScala, an agent-oriented programming language based on Scala. AgScala includes declarative constructs for managing beliefs, actions and goals of intelligent agents. Combined with object-oriented and functional programming paradigms offered by Scala, it aims to be an efficient framework for developing both purely reactive, and more complex, deliberate agents. Instead of the Prolog back-end used initially, the new version of AgScala relies on Agent Planning Package, a more advanced system for automated planning and reasoning.

  9. A++: An Agent Oriented Programming Language

    Directory of Open Access Journals (Sweden)

    Deyi Xue

    2004-08-01

    Full Text Available A new Agent-Oriented Programming (AOP language called A++ is introduced in this research for developing agent-based distributed systems. In this work, agent-oriented programming is defined as a programming method with characteristics of distribution, autonomy, concurrency, and mobility. Both agents and objects can be modeled in A++. In addition to data and methods that can be defined in objects including classes and instances, each agent is also associated with an independent computing process in agent-oriented programming.

  10. Pharmacologic Agents for Chronic Diarrhea.

    Science.gov (United States)

    Lee, Kwang Jae

    2015-10-01

    Chronic diarrhea is usually associated with a number of non-infectious causes. When definitive treatment is unavailable, symptomatic drug therapy is indicated. Pharmacologic agents for chronic diarrhea include loperamide, 5-hydroxytryptamine type 3 (5-HT3) receptor antagonists, diosmectite, cholestyramine, probiotics, antispasmodics, rifaximin, and anti-inflammatory agents. Loperamide, a synthetic opiate agonist, decreases peristaltic activity and inhibits secretion, resulting in the reduction of fluid and electrolyte loss and an increase in stool consistency. Cholestyramine is a bile acid sequestrant that is generally considered as the first-line treatment for bile acid diarrhea. 5-HT3 receptor antagonists have significant benefits in patients with irritable bowel syndrome (IBS) with diarrhea. Ramosetron improves stool consistency as well as global IBS symptoms. Probiotics may have a role in the prevention of antibiotic-associated diarrhea. However, data on the role of probiotics in the treatment of chronic diarrhea are lacking. Diosmectite, an absorbent, can be used for the treatment of chronic functional diarrhea, radiation-induced diarrhea, and chemotherapy-induced diarrhea. Antispasmodics including alverine citrate, mebeverine, otilonium bromide, and pinaverium bromide are used for relieving diarrheal symptoms and abdominal pain. Rifaximin can be effective for chronic diarrhea associated with IBS and small intestinal bacterial overgrowth. Budesonide is effective in both lymphocytic colitis and collagenous colitis. The efficacy of mesalazine in microscopic colitis is weak or remains uncertain. Considering their mechanisms of action, these agents should be prescribed properly. PMID:26576135

  11. Multi-agent autonomous system

    Science.gov (United States)

    Fink, Wolfgang (Inventor); Dohm, James (Inventor); Tarbell, Mark A. (Inventor)

    2010-01-01

    A multi-agent autonomous system for exploration of hazardous or inaccessible locations. The multi-agent autonomous system includes simple surface-based agents or craft controlled by an airborne tracking and command system. The airborne tracking and command system includes an instrument suite used to image an operational area and any craft deployed within the operational area. The image data is used to identify the craft, targets for exploration, and obstacles in the operational area. The tracking and command system determines paths for the surface-based craft using the identified targets and obstacles and commands the craft using simple movement commands to move through the operational area to the targets while avoiding the obstacles. Each craft includes its own instrument suite to collect information about the operational area that is transmitted back to the tracking and command system. The tracking and command system may be further coupled to a satellite system to provide additional image information about the operational area and provide operational and location commands to the tracking and command system.

  12. An Agent Based Classification Model

    CERN Document Server

    Gu, Feng; Greensmith, Julie

    2009-01-01

    The major function of this model is to access the UCI Wisconsin Breast Can- cer data-set[1] and classify the data items into two categories, which are normal and anomalous. This kind of classifi cation can be referred as anomaly detection, which discriminates anomalous behaviour from normal behaviour in computer systems. One popular solution for anomaly detection is Artifi cial Immune Sys- tems (AIS). AIS are adaptive systems inspired by theoretical immunology and observed immune functions, principles and models which are applied to prob- lem solving. The Dendritic Cell Algorithm (DCA)[2] is an AIS algorithm that is developed specifi cally for anomaly detection. It has been successfully applied to intrusion detection in computer security. It is believed that agent-based mod- elling is an ideal approach for implementing AIS, as intelligent agents could be the perfect representations of immune entities in AIS. This model evaluates the feasibility of re-implementing the DCA in an agent-based simulation environ- ...

  13. 14th International Conference on Practical Applications of Agents and Multi-Agent Systems : Special Sessions

    CERN Document Server

    Escalona, María; Corchuelo, Rafael; Mathieu, Philippe; Vale, Zita; Campbell, Andrew; Rossi, Silvia; Adam, Emmanuel; Jiménez-López, María; Navarro, Elena; Moreno, María

    2016-01-01

    PAAMS, the International Conference on Practical Applications of Agents and Multi-Agent Systems is an evolution of the International Workshop on Practical Applications of Agents and Multi-Agent Systems. PAAMS is an international yearly tribune to present, to discuss, and to disseminate the latest developments and the most important outcomes related to real-world applications. It provides a unique opportunity to bring multi-disciplinary experts, academics and practitioners together to exchange their experience in the development of Agents and Multi-Agent Systems. This volume presents the papers that have been accepted for the 2016 in the special sessions: Agents Behaviours and Artificial Markets (ABAM); Advances on Demand Response and Renewable Energy Sources in Agent Based Smart Grids (ADRESS); Agents and Mobile Devices (AM); Agent Methodologies for Intelligent Robotics Applications (AMIRA); Learning, Agents and Formal Languages (LAFLang); Multi-Agent Systems and Ambient Intelligence (MASMAI); Web Mining and ...

  14. Borrelioses, agentes e vetores Borrelioses, agents and vectors: a review

    Directory of Open Access Journals (Sweden)

    Cleber O. Soares

    2000-03-01

    Full Text Available As borrelioses são enfermidades infecciosas determinadas por espiroquetas do gênero Borrelia, agentes transmissíveis, principalmente, por carrapatos aos animais e/ou ao homem. Nesta revisão são apresentadas e discutidas as enfermidades determinadas por borrélias, bem como as características gerais das espiroquetas, os aspectos relacionados a transmissão por artrópodes, as enfermidades nos animais domésticos e silvestres, quanto aos aspectos biológicos e patológicos, a doença de Lyme como principal zoonose do grupo, a associação de borrélia com outros agentes hematozoários e os métodos diagnósticos e a epidemiologia comparativa entre dados obtidos no Brasil com os de outros países. Estas borrelioses possuem características patológicas, clínicas e epidemiológicas variadas de acordo à região fisiográfica, devido à existência de distintas espécies, genoespécies e cepas; estes aspectos variam ainda em função dos artrópodes vetores, da interação vetor-patógeno e dos ecossistemas distintos.Borrelioses are infectous diseases caused by spirochaetes of the genus Borrelia. They are born mainly through ticks at animals and/or human beings. In this review are shown and discussed five groups of diseases determined by borrelia, general characteristics of the spirochaetes, aspects related to transmission by arthropods, biological and pathological aspects of the diseases in domestic and wild animals, Lyme disease as an important zoonosis, the association of borrelia with other hematozoa agents, the diagnostic methods and the comparative epidemiology with data obtained from Brazil and other countries. The borrelioses have pathological, clinical and epidemiological characteristics which vary according to physiographic regions due to the existence of different species, genospecies and strains of borrelia, of arthropod vectors, vector-agent relationship and of different ecocystems.

  15. Learning other agents` preferences in multiagent negotiation

    Energy Technology Data Exchange (ETDEWEB)

    Bui, H.H.; Kieronska, D.; Venkatesh, S. [Curtin Univ. of Technology, Perth, WA (Australia)

    1996-12-31

    In multiagent systems, an agent does not usually have complete information about the preferences and decision making processes of other agents. This might prevent the agents from making coordinated choices, purely due to their ignorance of what others want. This paper describes the integration of a learning module into a communication-intensive negotiating agent architecture. The learning module gives the agents the ability to learn about other agents` preferences via past interactions. Over time, the agents can incrementally update their models of other agents` preferences and use them to make better coordinated decisions. Combining both communication and learning, as two complement knowledge acquisition methods, helps to reduce the amount of communication needed on average, and is justified in situations where communication is computationally costly or simply not desirable (e.g. to preserve the individual privacy).

  16. Agent Communication Channel Based on BACnet

    Institute of Scientific and Technical Information of China (English)

    Jiang Wen-bin; Zhou Man-li

    2004-01-01

    We analyze the common shortcoming in the existing agent MTPs (message transport protocols). With employing the File object and related service AtomicWriteFile of BACnet (a data communication protocol building automation and control networks), a new method of agent message transport is proposed and implemented. Every agent platform (AP) has one specified File object and agents in another AP can communicate with agents in the AP by using AtomicWriteFile service. Agent messages can be in a variety of formats. In implementation, BACnet/IP and Ethernet are applied as the BACnet data link layers respectively. The experiment results show that the BACnet can provide perfect support for agent communication like other conventional protocols such as hypertext transfer protocol(HTTP), remote method invocation (RMI) etc. and has broken through the restriction of TCP/IP. By this approach, the agent technology is introduced into the building automation control network system.

  17. Analysis and Optimization for Mobile Agent Communication

    Institute of Scientific and Technical Information of China (English)

    YANGBo; LIUDayou

    2005-01-01

    Communication performance is one of the most important factors affecting the efficiency of mobile agent system. Only traditional optimization techniques for communication performance are not enough, especially in large-scale intelligent mobile agent system, so more intelligent optimization techniques are needed. In the background, the paper studies communication of mobile agent system from the viewpoint of performance. The paper makes qualitative and quantitative analysis of four important factors that will affect the communication performance of mobile agent system and presents the communication performance optimization model. The model hasthree primary functions. First, the model provides a formalism method to describe the communication task and process of mobile agent. Second, the model provides a means to make quantitative analysis of the performance of mobile agent system. Third, the model can plan out an optimal communication scheme for mobile agent to minimize the cost of whole communication. The model could thus be a building block for the optimization of the communication behavior of mobile agent.

  18. Comparison of Communication Models for Mobile Agents

    Directory of Open Access Journals (Sweden)

    Xining Li

    2003-04-01

    Full Text Available An agent is a self-contained process being acting on behalf of a user. A Mobile Agent is an agent roaming the internet to access data and services, and carry out its assigned task remotely. This paper will focus on the communication models for Mobile Agents. Generally speaking, communication models concern with problems of how to name Mobile Agents, how to establish communication relationships, how to trace moving agents, and how to guarantee reliable communication. Some existing MA systems are purely based on RPC-style communication, whereas some adopts asynchronous message passing, or event registration/handling. Different communication concepts suitable for Mobile Agents are well discussed in [1]. However, we will investigate these concepts and existing models from a different point view: how to track down agents and deliver messages in a dynamic, changing world.

  19. A Framework for Multi-Agent Planning

    OpenAIRE

    Bos, A; Tonino, J.F.M.; De Weerdt, M.M.; Witteveen, C.

    2000-01-01

    We introduce a computational framework, consisting of resources, skills, goals and services to represent the plans of individual agents and to develop models and algorithms for cooperation processes between a collection of agents.

  20. Porphyria Cutanea Tarda and Agent Orange

    Science.gov (United States)

    ... ZIP code here Porphyria Cutanea Tarda and Agent Orange VA presumes porphyria cutanea tarda (PCT) is related to Veterans' exposure to Agent Orange or other herbicides during military service when the ...

  1. Soft Tissue Sarcomas and Agent Orange

    Science.gov (United States)

    ... ZIP code here Soft Tissue Sarcomas and Agent Orange VA presumes some soft tissue sarcomas in Veterans are related to their exposure to Agent Orange or other herbicides during military service. The soft ...

  2. Mobile agents for distributed decision support systems

    OpenAIRE

    Blaz Rodič

    2011-01-01

    This article focuses on the performance of Java based mobile agents using format translation via an intermediary XML based format. Our goal was to develop and verify the performance of a lightweight, mobile agent based solution that would allow strong security, portability and access to heterogeneous data resources from a mobile platform to facilitate exchange of data between simulation models and data resources. We have developed two types of agents: a mobile agent that functions as a server...

  3. Security Issues in Mobile Agent Paradigm

    OpenAIRE

    Nitin Jain; Neeraj Singla

    2011-01-01

    A mobile Agent is a Software program that migrates from node tonode of a heterogeneous network. They are goal-oriented i.e. workautonomously towards a goal, capable of suspending their executionon one platform and moving to other where they can resumeexecution using resources of these nodes and they meet and interactwith other agents. Agents may be stationary, always resident at asingle platform or mobile, capable of moving among differentplatforms at different time. The mobile agent paradigm...

  4. Explaining Simulations Through Self Explaining Agents

    OpenAIRE

    Maaike Harbers; John-Jules Meyer; Karel Van den Bosch

    2010-01-01

    Several strategies are used to explain emergent interaction patterns in agent-based simulations. A distinction can be made between simulations in which the agents just behave in a reactive way, and simulations involving agents with also pro-active (goal-directed) behavior. Pro-active behavior is more variable and harder to predict than reactive behavior, and therefore it might be harder to explain. However, the approach presented in this paper tries to make advantage of the agents' pro-active...

  5. ENZYMATIC DEINKING AGENTS FOR MIXED OFFICE WASTEPAPER

    Institute of Scientific and Technical Information of China (English)

    HuayuQiu; ChuanfuLiu; XiaokeMa; YingjuanFu

    2004-01-01

    This article focused on deinking agents for enzymatic deinking of MOW (mixed office wastepaper). The deinking performances of many series of surfactants were discussed at the experimental conditions, and finally some surfactants, which had good deinking effect, were selected. Then two-composed deinking agents were discussed. The deinkability of the deinking agents, e.g. deinking agents containing T-123 50% and P-10 50%, T-123 70% and O-15 30%, were better than that of the imported product.

  6. ENZYMATIC DEINKING AGENTS FOR MIXED OFFICE WASTEPAPER

    Institute of Scientific and Technical Information of China (English)

    Huayu Qiu; Chuanfu Liu; Xiaoke Ma; Yingjuan Fu

    2004-01-01

    This article focused on deinking agents for enzymatic deinking of MOW (mixed office wastepaper). The deinking performances of many series of surfactants were discussed at the experimental conditions, and finally, some surfactants, which had good deinking effect, were selected. Then two-composed deinking agents were discussed. The deinkability of the deinking agents, e.g. deinking agents containing T-123 50% and P-10 50%, T-123 70% and O-1530%, were better than that of the imported product.

  7. Virtual Knowledge Communities for Semantic Agents

    OpenAIRE

    Subercaze, Julien; Maret, Pierre

    2011-01-01

    International audience Virtual Knowledge Communities are a well suited paradigm for decentralized knowldege exchanges and they have been applied in several domains. In this paper we investigate the implementation of virtual knowledge communities with se- mantic agents. Using the SAM (Semantic Agent Modeling) approach, we show that agents can exchange community re- lated concepts (in OWL) and behavior (in SWRL). Agents can then learn and adapt new community-related behavior, which is useful...

  8. On Programming Organization-Aware Agents

    DEFF Research Database (Denmark)

    Jensen, Andreas Schmidt

    Since it is difficult (or even impossible) to assume anything about the agents’ behavior and goals in an open multi-agent system, it is often suggested that an organization is imposed upon the agents, whichhich, by abstracting away from the agents, specifies boundaries and objectives that the......-aware, thus removing the middleware and letting the agents directly reason about the organization. In this paper, we discuss the results so far, and describe the future goals and research direction for the project....

  9. Sports Agent Industry Emerges in China

    Institute of Scientific and Technical Information of China (English)

    HeiZiand; YiYou

    2003-01-01

    The agent profession is not new to Chinese. First appearing in the Western Zhou Dynasty, agents were called "Zhi Ren" then and "Ya Ren" from the Tang Dynasty onwards. In the Ming Dynasty, a certain amount of property and a license were required if one wanted to become an agent. In the late Qing Dynasty, Mai Ban (Chinese executives working in foreign firms), also a sort of agents, began to emerge in major cities of China.

  10. Integration of Agent System with Legacy Software

    Institute of Scientific and Technical Information of China (English)

    SHEN Qi; ZHAO Yan-hong; YIN Zhao-lin

    2003-01-01

    Agent technique is a new method that can analyze, design and realize a distributed open system. It has been used in almost every field. But if act for the real practical words in technique, it must integrate with legacy software, such as database system etc, and control them. This paper introduces the specification of agent software integration, ontology, instances database as implementing agent software integration with CORBA technique and takes XML, ACL as language communicating among agents.

  11. Topology and Social Behaviour of Agents

    OpenAIRE

    O. Hudak

    2003-01-01

    In a social group its members are caled here agents. Any two agents from the group may interact. The interaction consists of the exchange of information and it costs some energy. There exist subgroups of interacting agents which are nonreducibile. The structure, configuration of interactions between agents in the group, forms a macroscopic structure. The statistical equilibrium due to microreversibility is characterised by the maximum of entropy and by the minimum of energy, costs of informat...

  12. Self-Adapting Reactive Autonomous Agents

    Science.gov (United States)

    Andrecut, M.; Ali, M. K.

    This paper describes a new self-adapting control algorithm for reactive autonomous agents. The architecture of the autonomous agents integrates the reactive behavior with reinforcement learning. We show how these components perform on-line adaptation of the autonomous agents to various complex navigation situations by constructing an internal model of the environment. Also, a discussion on cooperation and coordination of teams of agents is presented.

  13. Properties of Ettringite Type Expansive Agent

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    By employing different forms and amounts of materials,many kinds of ettringite type expansive agents had been prepared.The relationship between the compositions and properties of expansive agents was analyzed.The design methods of expansive agent have been put forward according to the property requirement of expansive concrete.

  14. Agent for roentgenocontrast examination of cavities

    International Nuclear Information System (INIS)

    The water-soluble agent, additionaly containing starch, agar, water, is suggested to increase accuracy of injured cavity diagnostics. The method for roentgenocontrast agent preparation on the base of starch-agar gel is described. Advantages of the agent suggested in comparison with those of roentgenologic cavity investigation used are shown

  15. Cooperative heuristic multi-agent planning

    NARCIS (Netherlands)

    De Weerdt, M.M.; Tonino, J.F.M.; Witteveen, C.

    2001-01-01

    In this paper we will use the framework to study cooperative heuristic multi-agent planning. During the construction of their plans, the agents use a heuristic function inspired by the FF planner (l3l). At any time in the process of planning the agents may exchange available resources, or they may r

  16. Stability of Evolving Multi-Agent Systems

    CERN Document Server

    De Wilde, Philippe; 10.1109/TSMCB.2011.2110642

    2011-01-01

    A Multi-Agent System is a distributed system where the agents or nodes perform complex functions that cannot be written down in analytic form. Multi-Agent Systems are highly connected, and the information they contain is mostly stored in the connections. When agents update their state, they take into account the state of the other agents, and they have access to those states via the connections. There is also external, user-generated input into the Multi-Agent System. As so much information is stored in the connections, agents are often memory-less. This memory-less property, together with the randomness of the external input, has allowed us to model Multi-Agent Systems using Markov chains. In this paper, we look at Multi-Agent Systems that evolve, i.e. the number of agents varies according to the fitness of the individual agents. We extend our Markov chain model, and define stability. This is the start of a methodology to control Multi-Agent Systems. We then build upon this to construct an entropy-based defi...

  17. The Ontogenesis of Agent: Linguistic Expression.

    Science.gov (United States)

    Olswang, Lesley Barrett; Carpenter, Robert L.

    1982-01-01

    Some of the findings of a longitudinal study of three infants between their 11th and 22nd months to document development of linguistic expression of the agent concept indicated that first vocalizations were inconsistently associated with nonverbal agentive behaviors and later mature utterances coded agent-action-recipient events. (MC)

  18. Embedded Automation in Human-Agent Environment

    CERN Document Server

    Tweedale, Jeffrey W

    2012-01-01

    This research book proposes a general conceptual framework for the development of automation in human-agents environments that will allow human- agent teams to work effectively and efficiently. We examine various schemes to implement artificial intelligence techniques in agents.  The text is directed to the scientists, application engineers, professors and students of all disciplines, interested in the agency methodology and applications.

  19. STUDIES OF WATERBORNE AGENTS OF VIRAL GASTROENTERITIS

    Science.gov (United States)

    The etiologic agent of a large outbreak of waterborne viral gastroenteritis was detected employing immune electron microscopy (IEM) and a newly developed solid phase radioimmunoassay (RIA). This agent, referred to as the Snow Mountain Agent (SMA), is 27-32 nm. in diameter, has cu...

  20. A theoretical framework for explaining agent behavior

    NARCIS (Netherlands)

    Harbers, M.; Bosch, K. van den; Meyer, J.J.C.

    2011-01-01

    To understand emergent processes in multi-agent-based simulations it is important to study the global processes in a simulation as well as the processes on the agent level. The behavior of individual agents is easier to understand when they are able to explain their own behavior. In this paper, a th

  1. Stigmergy in multi-agent reinforcement learning

    OpenAIRE

    Aras, Raghav; Dutech, Alain; Charpillet, François

    2004-01-01

    http://www.computer.org In this paper, we describe how certain aspects of the biological phenomena of stigmergy can be imported into multi-agent reinforcement learning (MARL), with the purpose of better enabling coordination of agent actions and speeding up learning. In particular, we detail how these stigmergic aspects can be used to define an inter-agent communication framework.

  2. Explaining simulations through self explaining agents

    NARCIS (Netherlands)

    Harbers, M.; Bosch, K. van den; Meyer, J.J.C.

    2010-01-01

    Several strategies are used to explain emergent interaction patterns in agent-based simulations. A distinction can be made between simulations in which the agents just behave in a reactive way, and simulations involving agents with also pro-active (goal-directed) behavior. Pro-active behavior is mor

  3. Explaining Simulations through Self Explaining Agents

    NARCIS (Netherlands)

    Harbers, M.; Dignum, F.; Bosch, K. van den; Meyer, J.J.C.

    2008-01-01

    Several strategies are used to explain emergent interaction patterns in agent-based simulations. A distinction can be made between simulations in which the agents just behave in a reactive way, and simulations involving agents with also pro-active (goal-directed) behavior. Pro-active behavior is mor

  4. Mobile Agents in Networking and Distributed Computing

    CERN Document Server

    Cao, Jiannong

    2012-01-01

    The book focuses on mobile agents, which are computer programs that can autonomously migrate between network sites. This text introduces the concepts and principles of mobile agents, provides an overview of mobile agent technology, and focuses on applications in networking and distributed computing.

  5. On Programming Organization-Aware Agents

    DEFF Research Database (Denmark)

    Jensen, Andreas Schmidt

    2013-01-01

    Since it is difficult (or even impossible) to assume anything about the agents’ behavior and goals in an open multi-agent system, it is often suggested that an organization is imposed upon the agents, whichhich, by abstracting away from the agents, specifies boundaries and objectives that the age...

  6. Radioactive scanning agents with hydroquinone stabilizer

    International Nuclear Information System (INIS)

    Stable compositions useful as technetium 99m-based scintigraphic agents comprise hydroquinone in combination with a pertechnetate reducing agent or dissolved in pertechnetate-99m (sup(99m)TcOsub(4)sup(-)) solution. The compositions are especially useful in combination with a phosphate or phosphonate material which carries the radionuclide to bone, thus providing a skeletal imaging agent

  7. Honey - A Novel Antidiabetic Agent

    Directory of Open Access Journals (Sweden)

    Omotayo O. Erejuwa, Siti A. Sulaiman, Mohd S. Ab Wahab

    2012-01-01

    Full Text Available Diabetes mellitus remains a burden worldwide in spite of the availability of numerous antidiabetic drugs. Honey is a natural substance produced by bees from nectar. Several evidence-based health benefits have been ascribed to honey in the recent years. In this review article, we highlight findings which demonstrate the beneficial or potential effects of honey in the gastrointestinal tract (GIT, on the gut microbiota, in the liver, in the pancreas and how these effects could improve glycemic control and metabolic derangements. In healthy subjects or patients with impaired glucose tolerance or diabetes mellitus, various studies revealed that honey reduced blood glucose or was more tolerable than most common sugars or sweeteners. Pre-clinical studies provided more convincing evidence in support of honey as a potential antidiabetic agent than clinical studies did. The not-too-impressive clinical data could mainly be attributed to poor study designs or due to the fact that the clinical studies were preliminary. Based on the key constituents of honey, the possible mechanisms of action of antidiabetic effect of honey are proposed. The paper also highlights the potential impacts and future perspectives on the use of honey as an antidiabetic agent. It makes recommendations for further clinical studies on the potential antidiabetic effect of honey. This review provides insight on the potential use of honey, especially as a complementary agent, in the management of diabetes mellitus. Hence, it is very important to have well-designed, randomized controlled clinical trials that investigate the reproducibility (or otherwise of these experimental data in diabetic human subjects.

  8. Anticancer agents from marine sponges.

    Science.gov (United States)

    Ye, Jianjun; Zhou, Feng; Al-Kareef, Ammar M Q; Wang, Hong

    2015-01-01

    Marine sponges are currently one of the richest sources of anticancer active compounds found in the marine ecosystems. More than 5300 different known metabolites are from sponges and their associated microorganisms. To survive in the complicated marine environment, most of the sponge species have evolved chemical means to defend against predation. Such chemical adaptation produces many biologically active secondary metabolites including anticancer agents. This review highlights novel secondary metabolites in sponges which inhibited diverse cancer species in the recent 5 years. These natural products of marine sponges are categorized based on various chemical characteristics. PMID:25402340

  9. Social Robots as Persuasive Agents

    DEFF Research Database (Denmark)

    Vlachos, Evgenios; Schärfe, Henrik

    2014-01-01

    Robots are more and more used in a social context, and in this paper we try to formulate a research agenda concerning ethical issues around social HRI in order to be prepared for future scenarios where robots may be a naturally integrated part of human society. We outline different paradigms to d...... describe the role of social robots in communication processes with humans, and connect HRI with the topic of persuasive technology in health care, to critically reflect the potential benefits of using social robots as persuasive agents....

  10. Estádio de adaptação de Spodoptera frugiperda (J. E. Smith (Lepidoptera: Noctuidae em hospedeiros alternativos Fitness stage of Spodoptera frugiperda (J. E. Smith (Lepidoptera: Noctuidae on alternative hosts

    Directory of Open Access Journals (Sweden)

    Katia Gisele Brasil Boregas

    2013-03-01

    Full Text Available A principal praga-alvo na cultura do milho é a lagarta-do-cartucho, Spodoptera frugiperda (J.E. Smith, 1797 (Lepidoptera: Noctuidae, que, pela sua ampla distribuição temporal e geográfica constitui-se em uma das espécies mais nocivas nas regiões tropicais das Américas. O objetivo foi avaliar o estádio de adaptação de S. frugiperda em 17 espécies hospedeiras, cultivadas ou selvagens, mais comuns no agroecossistema brasileiro. As plantas foram cultivadas em cinco épocas, entre 2006 e 2008, utilizando o milho como padrão. Larvas de S. frugiperda recém-eclodidas foram individualizadas e confinadas em copo plástico (50 mL, onde foram alimentadas com seções de folha nova de cada hospedeiro. O alimento foi substituído a cada dois dias por folhas frescas. Quatro variáveis biológicas foram avaliadas e utilizadas para se calcular um Índice de Adaptação (IA. Os resultados indicaram que a sobrevivência inicial de S. frugiperda variou de 100%, no milho, a 46%, no arroz. O período larval variou de 12,6 dias, no milho, a 27,1 dias, na grama batatais. A biomassa de pupa variou de 173,1 mg, no carrapicho, a 294,2 mg, no milho. O índice de adaptação, calculado com base nas variáveis biológicas de S. frugiperda, nos hospedeiros avaliados, variou de 17,43, no milho cultivado na época I, a 1,46, na cana-de-açúcar na época III. Para corrigir o efeito de época sobre o índice de adaptação de S. frugiperda nos hospedeiros, foi calculado o Índice Relativo de Adaptação (IRA, com base no índice de adaptação no milho (100%. Assim, com base no índice relativo de adaptação, estimado em condições de laboratório, os hospedeiros alternativos ao milho, para S. frugiperda, podem ser assim ordenados, do maior para o menor índice: sorgo granífero, sorgo selvagem, milheto, capim-tanzânia, amendoim, capim-marandu, capim-braquiária, caruru-de-porco, trigo, soja, algodão, feijão, arroz, capim-carrapicho, grama batatais e cana

  11. Camouflaging Agents for Vitiligo Patients.

    Science.gov (United States)

    Hossain, Claudia; Porto, Dennis A; Hamzavi, Iltefat; Lim, Henry W

    2016-04-01

    Vitiligo is an acquired condition resulting in patches of depigmented skin that is cosmetically disfiguring and can subsequently be psychologically disturbing. For patients seeking to mask their vitiligo, camouflage options have historically been limited and been designated as a cosmetic, rather than a medical, concern. As research has indicated that proper concealment of vitiligo lesions can vastly improve quality of life, we believe it is essential that dermatologists become aware of all the options available to their patients and that discussions of camouflage options be broached from the first visit. Methods for concealment include cosmetic tattoos, dihydroxyacetone, general cosmetics, and various topical camouflage agents, including the newest product, Microskin™. We conducted a literature review of all of the available options for vitiligo concealment and evaluated their advantages and disadvantages. Ultimately, temporary methods of concealment are recommended; but the particular agent used can come from discussion with the patient based on the location of the lesions, degree of concealment desired, cost, and availability. PMID:27050692

  12. Surfactants as blackbird stressing agents

    Science.gov (United States)

    Lefebvre, P.W.; Seubert, J.L.

    1970-01-01

    Applications of wetting-agent solutions produce mortality in birds. The exact cause of death is undetermined but it is believed that destruction of the insulating qualities of the plumage permits ambient cold temperatures and evaporation to lower the body temperature to a lethal level. The original concept of using these materials as bird-control tools was developed in 1958 at the Patuxent Wildlife Research Center, Bureau of Sport Fisheries and Wildlife Laurel, Maryland. Early field trials by personnel of the Division of Wildlife Services and the Denver Wildlife Research Center indicated that ground-application techniques had promise but limitations of the equipment precluded successful large-scale roost treatments. In 1966, Patuxent Center personnel began using tanker-type aircraft to evaluate high-volume aerial applications of wetting agents. The success of these tests led to the use of small aircraft to make low-volume, high-concentration aerial applications just prior to expected rainfall. Recent trials of the low-volume method show that, with some limitations, it is effective, inexpensive, and safe to the environment. Current research emphasizes the screening of new candidate materials for efficacy, biodegradability, and toxicity to plants and non-target animals, as well as basic investigations of the avian physiological mechanisms involved. Field trials to develop more effective application techniques will continue.

  13. Electric power market agent design

    Science.gov (United States)

    Oh, Hyungseon

    The electric power industry in many countries has been restructured in the hope of a more economically efficient system. In the restructured system, traditional operating and planning tools based on true marginal cost do not perform well since information required is strictly confidential. For developing a new tool, it is necessary to understand offer behavior. The main objective of this study is to create a new tool for power system planning. For the purpose, this dissertation develops models for a market and market participants. A new model is developed in this work for explaining a supply-side offer curve, and several variables are introduced to characterize the curve. Demand is estimated using a neural network, and a numerical optimization process is used to determine the values of the variables that maximize the profit of the agent. The amount of data required for the optimization is chosen with the aid of nonlinear dynamics. To suggest an optimal demand-side bidding function, two optimization problems are constructed and solved for maximizing consumer satisfaction based on the properties of two different types of demands: price-based demand and must-be-served demand. Several different simulations are performed to test how an agent reacts in various situations. The offer behavior depends on locational benefit as well as the offer strategies of competitors.

  14. Cooperative planning in multi-agent systems

    OpenAIRE

    Torreño Lerma, Alejandro

    2016-01-01

    [EN] Automated planning is a centralized process in which a single planning entity, or agent, synthesizes a course of action, or plan, that satisfies a desired set of goals from an initial situation. A Multi-Agent System (MAS) is a distributed system where a group of autonomous agents pursue their own goals in a reactive, proactive and social way. Multi-Agent Planning (MAP) is a novel research field that emerges as the integration of automated planning in MAS. Agents are endowed with plan...

  15. Anchor Toolkit - a secure mobile agent system

    Energy Technology Data Exchange (ETDEWEB)

    Mudumbai, Srilekha S.; Johnston, William; Essiari, Abdelilah

    1999-05-19

    Mobile agent technology facilitates intelligent operation insoftware systems with less human interaction. Major challenge todeployment of mobile agents include secure transmission of agents andpreventing unauthorized access to resources between interacting systems,as either hosts, or agents, or both can act maliciously. The Anchortoolkit, designed by LBNL, handles the transmission and secure managementof mobile agents in a heterogeneous distributed computing environment. Itprovides users with the option of incorporating their security managers.This paper concentrates on the architecture, features, access control anddeployment of Anchor toolkit. Application of this toolkit in a securedistributed CVS environment is discussed as a case study.

  16. An Agent-Based Distributed Manufacturing System

    Institute of Scientific and Technical Information of China (English)

    J.Li; J.Y.H.Fuh; Y.F.Zhang; A.Y.C.Nee

    2006-01-01

    Agent theories have shown their promising capability in solving distributed complex system ever since its development. In this paper, one multi-agent based distributed product design and manufacturing planning system is presented. The objective of the research is to develop a distributed collaborative design environment for supporting cooperation among the existing engineering functions. In the system, the functional agents for design, manufacturability evaluation,process planning and scheduling are efficiently integrated with a facilitator agent. This paper firstly gives an introduction to the system structure, and the definitions for each executive agent are then described and a prototype of the proposed is also included at the end part.

  17. Selected Problems on Mobile Agent Communication

    OpenAIRE

    Yinka A. Adekunle; Sola S. Maitanmi

    2011-01-01

    Mobile agent technology offers a new computing paradigm in which a program, in the form of a software agent, can transfer its execution from agent to agent masquerading itself as the original source of message. The use of mobile code has a long history dating back to the use of remote job entry systems in the 1960's. Today's agent incarnations can be characterized in a number of ways ranging from simple distributed objects to highly secured software with algorithm that can only be interpreted...

  18. Reversal agents in anaesthesia and critical care

    Directory of Open Access Journals (Sweden)

    Nibedita Pani

    2015-01-01

    Full Text Available Despite the advent of short and ultra-short acting drugs, an in-depth knowledge of the reversal agents used is a necessity for any anaesthesiologist. Reversal agents are defined as any drug used to reverse the effects of anaesthetics, narcotics or potentially toxic agents. The controversy on the routine reversal of neuromuscular blockade still exists. The advent of newer reversal agents like sugammadex have made the use of steroidal neuromuscular blockers like rocuronium feasible in rapid sequence induction situations. We made a review of the older reversal agents and those still under investigation for drugs that are regularly used in our anaesthesia practice.

  19. 75 FR 56489 - Separation Distances of Ammonium Nitrate and Blasting Agents From Explosives or Blasting Agents...

    Science.gov (United States)

    2010-09-16

    ... Ammonium Nitrate and Blasting Agents From Explosives or Blasting Agents (2002R-226P) AGENCY: Bureau of... CFR 555.220 set forth a table of separation distances of ammonium nitrate and blasting agents from explosives or blasting agents followed by six explanatory notes. Note three (3) states that the...

  20. Intelligent agent support for automated radiology exam

    Science.gov (United States)

    Shang, Yi; Popescu, Mihail

    2000-10-01

    A difficult problem in automatic medical image understanding is that for every image type such as x-ray and every body organ such as heart, there exist specific solutions that do not allow for generalization. Just collecting all the specific solutions will not achieve the vision of a computerized physician. To address this problem, we propose an intelligent agent approach that is based on agent-oriented programming is that it combines the benefits of object-oriented programming and expert system. For radiology image understanding, we present a multi- agent system that is composed of two major types of intelligent agents: radiologist agents and patient agents. A patient agent asks for multiple opinions from radiologists agents in interpreting a given set of images and then integrates the opinions. A radiologist agent decomposes the image recognition task into smaller problems that are solved collectively by multiple intelligent sub-agents. Finally, we present a preliminary implementation and running examples of the multi-agent system.

  1. A SURVEY OF THE PROPERTIES OF AGENTS

    Directory of Open Access Journals (Sweden)

    Kornelije Rabuzin

    2006-06-01

    Full Text Available In the past decade agent systems were considered to be as one of the major fields of study in Artificial Intelligence (AI field. Many different definitions of agents were presented and several different approaches describing agency can be distinguished. While some authors have tried to define “what” an agent really is, others have tried to identify agents by means of properties which they should possess. Most authors agree on these properties (at least basic set of properties which are intrinsic to agents. Since agent's definitions are not consistent, we are going to give an overview and list the properties intrinsic to an agent. Many different adjectives were attached to the term agent as well and many different kinds of agents and different architectures emerged too. The aim of this paper it go give an overview of what was going on in the field while taking into consideration main streams and projects. We will also present some guidelines important when modelling agent systems and say something about security issues. Also, some existing problems which restrict the wider usage of agents will be mentioned too.

  2. Agent-Based Modeling and Mapping of Manufacturing System

    Institute of Scientific and Technical Information of China (English)

    Z; Zhang

    2002-01-01

    Considering the agent-based modeling and mapping i n manufacturing system, some system models are described in this paper, which are included: Domain Based Hierarchical Structure (DBHS), Cascading Agent Structure (CAS), Proximity Relation Structure (PRS), and Bus-based Network Structure (BNS ). In DBHS, one sort of agents, called static agents, individually acts as Domai n Agents, Resources Agents, UserInterface Agents and Gateway Agents. And the oth ers, named mobile agents, are the brokers of task and ...

  3. Mobile agents for distributed decision support systems

    Directory of Open Access Journals (Sweden)

    Blaz Rodič

    2011-03-01

    Full Text Available This article focuses on the performance of Java based mobile agents using format translation via an intermediary XML based format. Our goal was to develop and verify the performance of a lightweight, mobile agent based solution that would allow strong security, portability and access to heterogeneous data resources from a mobile platform to facilitate exchange of data between simulation models and data resources. We have developed two types of agents: a mobile agent that functions as a server for queries in SQL and converts the query results into XML documents and a stationary agent acting as a client for query forwarding and conversion of received documents into text files readable by a client application. We have tested the performance of the agents in a distributed simulation scenario and established that the agents can be used to connect heterogeneous simulation models and other applications, improving their connectivity and usability.

  4. Agent-Oriented Probabilistic Logic Programming

    Institute of Scientific and Technical Information of China (English)

    Jie Wang; Shi-Er Ju; Chun-Nian Liu

    2006-01-01

    Currently, agent-based computing is an active research area, and great efforts have been made towards the agent-oriented programming both from a theoretical and practical view. However, most of them assume that there is no uncertainty in agents' mental state and their environment. In other words, under this assumption agent developers are just allowed to specify how his agent acts when the agent is 100% sure about what is true/false. In this paper, this unrealistic assumption is removed and a new agent-oriented probabilistic logic programming language is proposed, which can deal with uncertain information about the world. The programming language is based on a combination of features of probabilistic logic programming and imperative programming.

  5. Knowledge Management in Role Based Agents

    Science.gov (United States)

    Kır, Hüseyin; Ekinci, Erdem Eser; Dikenelli, Oguz

    In multi-agent system literature, the role concept is getting increasingly researched to provide an abstraction to scope beliefs, norms, goals of agents and to shape relationships of the agents in the organization. In this research, we propose a knowledgebase architecture to increase applicability of roles in MAS domain by drawing inspiration from the self concept in the role theory of sociology. The proposed knowledgebase architecture has granulated structure that is dynamically organized according to the agent's identification in a social environment. Thanks to this dynamic structure, agents are enabled to work on consistent knowledge in spite of inevitable conflicts between roles and the agent. The knowledgebase architecture is also implemented and incorporated into the SEAGENT multi-agent system development framework.

  6. An Agent Framework of Tourism Recommender System

    Directory of Open Access Journals (Sweden)

    Jia Zhi Yang

    2016-01-01

    Full Text Available This paper proposes the development of an Agent framework for tourism recommender system. The recommender system can be featured as an online web application which is capable of generating a personalized list of preference attractions for tourists. Traditional technologies of classical recommender system application domains, such as collaborative filtering, content-based filtering and content-based filtering are effectively adopted in the framework. In the framework they are constructed as Agents that can generate recommendations respectively. Recommender Agent can generate recommender information by integrating the recommendations of Content-based Agent, collaborative filtering-based Agent and constraint-based Agent. In order to make the performance more effective, linear combination method of data fusion is applied. User interface is provided by the tourist Agent in form of webpages and mobile app.

  7. 10th International Conference on Practical Applications of Agents and Multi-Agent Systems

    CERN Document Server

    Pérez, Javier; Golinska, Paulina; Giroux, Sylvain; Corchuelo, Rafael; Trends in Practical Applications of Agents and Multiagent Systems

    2012-01-01

    PAAMS, the International Conference on Practical Applications of Agents and Multi-Agent Systems is an evolution of the International Workshop on Practical Applications of Agents and Multi-Agent Systems. PAAMS is an international yearly tribune to present, to discuss, and to disseminate the latest developments and the most important outcomes related to real-world applications. It provides a unique opportunity to bring multi-disciplinary experts, academics and practitioners together to exchange their experience in the development of Agents and Multi-Agent Systems.   This volume presents the papers that have been accepted for the 2012 in the workshops: Workshop on Agents for Ambient Assisted Living, Workshop on Agent-Based Solutions for Manufacturing and Supply Chain and Workshop on Agents and Multi-agent systems for Enterprise Integration.

  8. Interaction Protocols in Multi-Agent Systems based on Agent Petri Nets Model

    Directory of Open Access Journals (Sweden)

    Kamel Barkaoui

    2013-08-01

    Full Text Available This paper deals with the modeling of interaction between agents in Multi Agents System (MAS based on Agent Petri Nets (APN. Our models are created based on communicating agents. Indeed, an agent initiating a conversation with other can specify the interaction protocol wishes to follow. The combination of APN and FIPA Protocols schemes leads to a set of deployment formal rules for points where model interaction can be successfully implemented. We introduce some models FIPA standard protocols.

  9. Fault Tolerance Mobile Agent System Using Witness Agent in 2-Dimensional Mesh Network

    Directory of Open Access Journals (Sweden)

    Ahmad Rostami

    2010-09-01

    Full Text Available Mobile agents are computer programs that act autonomously on behalf of a user or its owner and travel through a network of heterogeneous machines. Fault tolerance is important in their itinerary. In this paper, existent methods of fault tolerance in mobile agents are described which they are considered in linear network topology. In the methods three agents are used to fault tolerance by cooperating to each others for detecting and recovering server and agent failure. Three types of agents are: actual agent which performs programs for its owner, witness agent which monitors the actual agent and the witness agent after itself, probe which is sent for recovery the actual agent or the witness agent on the side of the witness agent. Communication mechanism in the methods is message passing between these agents. The methods are considered in linear network. We introduce our witness agent approach for fault tolerance mobile agent systems in Two Dimensional Mesh (2D-Mesh Network. Indeed Our approach minimizes Witness-Dependency in this network and then represents its algorithm.

  10. Agent Based Individual Traffic guidance

    DEFF Research Database (Denmark)

    Wanscher, Jørgen Bundgaard

    2004-01-01

    vehicle can be obtained through cellular phone tracking or GPS systems. This information can then be used to provide individual traffic guidance as opposed to the mass information systems of today -- dynamic roadsigns and trafficradio. The goal is to achieve better usage of road and time. The main topic......When working with traffic planning or guidance it is common practice to view the vehicles as a combined mass. >From this models are employed to specify the vehicle supply and demand for each region. As the models are complex and the calculations are equally demanding the regions and the detail of...... the road network is aggregated. As a result the calculations reveal only what the mass of vehicles are doing and not what a single vehicle is doing. This is the crucial difference to ABIT (Agent Based Individual Trafficguidance). ABIT is based on the fact that information on the destination of each...

  11. Bioprotective agents in safety control

    Directory of Open Access Journals (Sweden)

    Dimitrijević-Branković Suzana I.

    2003-01-01

    Full Text Available Food poisoning is the one of the main health hazards even today. More than 200 known diseases are transmitted through food. The causes of foodborne illness include viruses, bacteria, parasites, toxins, metals, and prions and the symptoms of foodborne illness range from mild gastroenteritis to life-threatening neurological, hepatic and renal syndromes.The prevention of food poisonings represents very serious task for food manufacturers. Beside food control according to the concept "from the farm to the table" there is increased need for the development of new technology for longer shelf lifes of food. Food fermented by lactic acid bacteria (LAB and traditionally considered to be safe. There are many substances produced by LAB that affect the shelf life of fermented food, by active suppression of poisoning microorganisms growth. Because of that, the LAB is recently considered as bioprotective agents that have important role in food safety.

  12. [Anticonvulsant agents in neuralgic pain.].

    Science.gov (United States)

    Jurna, I; Zenz, M

    1992-06-01

    The anticonvulsants, carbamazepine, clonazepam, phenytoin, and valproic acid are capable of depressing attacks of shooting pain in neuralgia. Shooting pain is perceived in trigeminal, intercostal, and other neuralgias, as a consequence of infectious diseases such as herpes zoster, and in the course of polyneuropathies of various causes. It is due to injury of nociceptive afferents, which generate bursts of activity in response to appropriate environmental changes. The anticonvulsant agents have no analgesic property per se, so that background pain remains unchanged. The depression of shooting pain results from the anticonvulsant action of the compounds. Both carbamazepine and phenytoin block synaptic transmission of neuronal hyperactivity by a direct depressant action that includes reduction of sodium conductance and by activation of inhibitory control. Clonazepam and valproic acid act by enhancing GABA-mediated inhibition of synaptic transmission. Carbamazepine is by far the most widely used compound; phenytoin, clonazepam, and valproic acid are not so popular because of their side effects. PMID:18415623

  13. Host modulation by therapeutic agents

    Directory of Open Access Journals (Sweden)

    Sugumari Elavarasu

    2012-01-01

    Full Text Available Periodontal disease susceptible group present advanced periodontal breakdown even though they achieve a high standard of oral hygiene. Various destructive enzymes and inflammatory mediators are involved in destruction. These are elevated in case of periodontal destruction. Host modulation aims at bringing these enzymes and mediators to normal level. Doxycycline, nonsteroidal anti-inflammatory drugs (NSAIDs, bisphosphonates, nitrous oxide (NO synthase inhibitors, recombinant human interleukin-11 (rhIL-11, omega-3 fatty acid, mouse anti-human interleukin-6 receptor antibody (MRA, mitogen-activated protein kinase (MAPK inhibitors, nuclear factor-kappa B (NF-kb inhibitors, osteoprotegerin, and tumor necrosis factor antagonist (TNF-α are some of the therapeutic agents that have host modulation properties.

  14. Effect of fungicides and alternative products in control of anthracnose and black spot of guava
    Efeito de fungicidas e produtos alternativos no controle da antracnose e da pinta preta da goiaba

    OpenAIRE

    Ivan Herman Fischer; Bruna Lourenço da Silva; Ana Raquel Soares; Maria Cecília de Arruda Palharini; Marise Cagnin Martins Parisi; Lilian Amorin

    2012-01-01

    This work aimed to evaluate the efficiency of fungicides in controlling in vitro and in vivo the causal agents of anthracnose (Colletotrichum gloeosporioides and C. acutatum) and black spot (Guignardia psidii) and evaluate the effect of alternative products to control these diseases. Inhibition of mycelial growth of the pathogens was evaluated for ten fungicides at concentrations of 1, 10 and 100 mg L-1 of active ingredient in potato-dextrose-agar medium. The effectiveness of the fungicides a...

  15. Evolutionary algorithms and multi-agent systems

    Science.gov (United States)

    Oh, Jae C.

    2006-05-01

    This paper discusses how evolutionary algorithms are related to multi-agent systems and the possibility of military applications using the two disciplines. In particular, we present a game theoretic model for multi-agent resource distribution and allocation where agents in the environment must help each other to survive. Each agent maintains a set of variables representing actual friendship and perceived friendship. The model directly addresses problems in reputation management schemes in multi-agent systems and Peer-to-Peer distributed systems. We present algorithms based on evolutionary game process for maintaining the friendship values as well as a utility equation used in each agent's decision making. For an application problem, we adapted our formal model to the military coalition support problem in peace-keeping missions. Simulation results show that efficient resource allocation and sharing with minimum communication cost is achieved without centralized control.

  16. Diuretic Agents in Treatment of Sudden Deafness

    Institute of Scientific and Technical Information of China (English)

    JI Chang-you; LI Hong-tao; ZHOU Ding-rong; CHEN Ji-chuan; WANG Yi-nan; GUAN Li-qian; ZHANG Min

    2008-01-01

    Objective To study the role of diuretic agents in treating sudden deafness (SD) and explore the possibility of endolymphatic hydrops as a potential cause of SD. Methods Twenty-eight SD cases were reviewed. In 23 cases, treatment was initiated with routine agents. Diuretic agents were later added in 8 of these cases that failed to respond to routine treatment agents. Diuretic agents were included in the initial treatment in the rest 5 cases. In total, 13 cases received diuretics in addition to routine treatment agents and 15 cases received conventional treatment only. Results In the 8 cases who received diuretics after failed conventional treatments, 4 showed hearing improvement, whereas all 5 cases in which diuretics were included in the initial treatment demonstrated hearing improvement. Conclusion These results suggest a possible role of endolymphatic hydrops in the pathophysiologic course of SD. Diuretics should be considered when clear indications exist with no conflicts to other medical conditions.

  17. Use of alternative media and different types of recipients in a laboratory culture of Ankistrodesmus gracilis (Reinsch Korshikov (Chlorophyceae = Utilização de meios alternativos e diferentes tipos de recipientes no cultivo de Ankistrodesmus gracilis (Reinsch Korshikov (Chlorophyceae em laboratório.

    Directory of Open Access Journals (Sweden)

    Lucia Helena Sipauba-Tavares

    2011-07-01

    Full Text Available A laboratory culture of Ankistrodesmus gracilis algae was evaluated by studying the biology of the species and its chemical composition in a traditional medium (CHU12 and in two alternative culture media, NPK (20-5-20 and macrophyte (Eichhornia crassipes + NPK, in three different types of recipients (fiberglass, carboy and plastic bag. First peak in the growth curve of Ankistrodesmus gracilis occurred on the ninth day in macrophyte + NPK medium (74.16 x 105 cells mL-1 in a fiberglass recipient. However, highest density (p 0.05 in culture media in the three recipients. Protein and fiber were similar (p > 0.05 in the treatments, but lipids were higher (p O objetivo do estudo foi avaliar os aspectos biológicos e a composição química da alga Ankistrodesmus gracilis em laboratório utilizando um meio tradicional (CHU12 e dois meios alternativos, NPK (20-5-20 e macrófita (Eichhornia crassipes + NPK em três diferentes tipos de recipientes (cuba de fibra de vidro translúcido, garrafões e saco plástico. O primeiro pico de densidade celular de Ankistrodesmus gracilis ocorreu no nono dia da curva de crescimento em meio macrófita+NPK (74,16 x 105 células mL-1 no recipiente de fibra de vidro, porém a maior densidade (p 0,05 nos três recipientes e meios de cultivo. Os teores de proteína e fibra foram similares (p > 0,05 nos tratamentos utilizados, já os de lipídios foram mais elevados (p < 0,05 no meio NPK. Os teores médios de nitrato, amônia, fósforo total e ortofosfato estiveram acima de 1 mg L-1 no meio NPK (p < 0,01. Os resultados obtidos neste estudo indicam a possibilidade do uso de meios alternativos como o NPK e macrophyte +NPK para o cultivo de A. gracilis em larga escala cultivados nos três tipos de recipientes, porém, em saco plástico o custo é baixo e ocupa menos espaço em cultivo de laboratório.

  18. Ultrasound contrast agents: bubbles, drops and particles

    OpenAIRE

    Lajoinie, Guillaume Pierre René

    2015-01-01

    The research on the medical use of microbubbles has coontinuously provided fascinating results for half a century. Investigating new agents or new uses of existing agents requires both innovative physics and ideas and extensive testing in-vitro and in vivo. The translation from the lab to the clinic is long and calls upon many specialties. In this dissertation, we have presented and studied various experimental agents for biomedical imaging and therapy, some in the early development phase and...

  19. NESTA: NASA Engineering Shuttle Telemetry Agent

    OpenAIRE

    Semmel, Glenn S.; Davis, Steven R.; Leucht, Kurt W.; Rowe, Dan A.; Smith, Kevin E.; O'Farrel, Ryan l; Boloni, Ladislau

    2006-01-01

    The Electrical Systems Division at the NASA Kennedy Space Center has developed and deployed an agent-based tool to monitor the space shuttle's ground processing telemetry stream. The application, the NASA Engineering Shuttle Telemetry Agent (NESTA), increases situational awareness for system and hardware engineers during ground processing of the shuttle's subsystems. The agent provides autonomous monitoring of the telemetry stream and automatically alerts system engineers when predefined crit...

  20. Intelligent Agents in E-Commerce

    Directory of Open Access Journals (Sweden)

    Valentin LITOIU

    2006-01-01

    Full Text Available This paper emphasizes the importance of intelligent agents in e-commerce, with a particular focus on the B2C and B2B context. From the consumer buying behaviour perspective, agents can be used to assist the following stages: need identification, product brokering, buyer coalition formation, merchant brokering and negotiation. Related to B2B commerce, intelligent agents are involved in partnership formation, brokering and negotiation.

  1. Web-Based Computing Resource Agent Publishing

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Web-based Computing Resource Publishing is a efficient way to provide additional computing capacity for users who need more computing resources than that they themselves could afford by making use of idle computing resources in the Web.Extensibility and reliability are crucial for agent publishing. The parent-child agent framework and primary-slave agent framework were proposed respectively and discussed in detail.

  2. Modeling culture in intelligent virtual agents

    OpenAIRE

    Mascarenhas, S.; Degens, N.; Paiva, A; Prada, R.; Hofstede, G.J.; Beulens, A.J.M.; Aylett, R.

    2015-01-01

    This work addresses the challenge of creating virtual agents that are able to portray culturally appropriate behavior when interacting with other agents or humans. Because culture influences how people perceive their social reality it is important to have agent models that explicitly consider social elements, such as existing relational factors. We addressed this necessity by integrating culture into a novel model for simulating human social behavior. With this model, we operationalized a par...

  3. Intelligent Agents in E-Commerce

    OpenAIRE

    Valentin LITOIU; Amelia BADICA; Cristian ETEGAN

    2006-01-01

    This paper emphasizes the importance of intelligent agents in e-commerce, with a particular focus on the B2C and B2B context. From the consumer buying behaviour perspective, agents can be used to assist the following stages: need identification, product brokering, buyer coalition formation, merchant brokering and negotiation. Related to B2B commerce, intelligent agents are involved in partnership formation, brokering and negotiation.

  4. Massive Multi-Agent Systems Control

    Science.gov (United States)

    Campagne, Jean-Charles; Gardon, Alain; Collomb, Etienne; Nishida, Toyoaki

    2004-01-01

    In order to build massive multi-agent systems, considered as complex and dynamic systems, one needs a method to analyze and control the system. We suggest an approach using morphology to represent and control the state of large organizations composed of a great number of light software agents. Morphology is understood as representing the state of the multi-agent system as shapes in an abstract geometrical space, this notion is close to the notion of phase space in physics.

  5. Applying Software Engineering to Agent Development

    OpenAIRE

    Cohen, Mark A.; Lock Haven University; RITTER, Frank E.; Haynes, Steven R

    2010-01-01

    Developing intelligent agents and cognitive models is a complex software engineering activity. This article shows how all intelligent agent creation tools can be improved by taking advantage of established software engineering principles such as high-level languages, maintenance-oriented development environments, and software reuse. We describe how these principles have been realized in the Herbal integrated development environment, a collection of tools that allows agent developers to exploi...

  6. Agent-based argumentation for ontology alignments

    OpenAIRE

    Laera, Loredana; Tamma, Valentina; Bench-Capon, Trevor; Euzenat, Jérôme

    2006-01-01

    laera2006a International audience When agents communicate they do not necessarily use the same vocabulary or ontology. For them to interact successfully they must find correspondences between the terms used in their ontologies. While many proposals for matching two agent ontologies have been presented in the literature, the resulting alignment may not be satisfactory to both agents and can become the object of further negotiation between them. This paper describes our work constructing ...

  7. Decentralized network management based on mobile agent

    Institute of Scientific and Technical Information of China (English)

    李锋; 冯珊

    2004-01-01

    The mobile agent technology can be employed effectively for the decentralized management of complex networks. We show how the integration of mobile agent with legacy management protocol, such as simple network management protocol (SNMP), leads to decentralized management architecture. HostWatcher is a framework that allows mobile agents to roam network, collect and process data, and perform certain adaptive actions. A prototype system is built and a quantitative analysis underlines the benefits in respect to reducing network load.

  8. Agent fabrication and its implementation for agent-based electronic commerce

    OpenAIRE

    Guan, Su; Zhu, F.

    2002-01-01

    In the last decade, agent-based e-commerce has emerged as a potential role for the next generation of e-commerce. How to create agents for e-commerce applications has become a serious consideration in this field. This paper proposes a new scheme named agent fabrication and elaborates its implementation in multi-agent systems based on the SAFER (Secure Agent Fabrication, Evolution & Roaming) architecture. First, a conceptual structure is proposed for software agents carrying out e-commerce act...

  9. Glaucoma: role of neuroprotective agents

    Directory of Open Access Journals (Sweden)

    Achyut N. Pandey

    2014-10-01

    Full Text Available Glaucoma is an optic neuropathy, considered as the second leading cause of blindness worldwide. Glaucoma is characterized by selective death of retinal ganglion cells (RGC and a progressive loss of vision. Elevated intraocular pressure (IOP is one of the most important risk factors for developing glaucoma and hence we mainly focus on lowering IOP to arrest the progression of glaucoma. However, many patients continue to demonstrate a clinically downhill course despite the control of initially raised IOP. In fact, some patients develop what is called normal tension glaucoma, not associated to an increased IOP. This emphasizes that several pressure-independent mechanisms are responsible for the development and progression of glaucomatous neuropathy and that high IOP and vascular insufficiency in the optic nerve head are only risk factors for the development of glaucoma, and are not the only target for the treatment of glaucoma. The reason is that the process of RGC death is thought to be biphasic, and the primary injury is followed by a slower secondary degeneration related to a noxious environment surrounding the apoptotic cells. This environment is characterized by changes in the extra-cellular ionic concentrations, increased amounts of free radicals, neurotrophins (NT depletion and increased glutamate-induced excitotoxicity due to high extra-cellular glutamate levels, which binds to N-methyl-D-aspartate (NMDA receptors leading to an abnormally high intracellular Ca2+ concentration. Neuroprotection is a process that attempts to preserve the remaining cells that are still vulnerable to damage, and the main aim of neuroprotective therapy is to employ pharmacologic or other means to attenuate the hostility of the environment surrounding the degenerating cells, or to supply the cells with the tools to deal with this aggression, providing resilience to the insult. Several agents have been reported neuroprotective in glaucoma, both in clinical assays

  10. Multi-agent systems simulation and applications

    CERN Document Server

    Uhrmacher, Adelinde M

    2009-01-01

    Methodological Guidelines for Modeling and Developing MAS-Based SimulationsThe intersection of agents, modeling, simulation, and application domains has been the subject of active research for over two decades. Although agents and simulation have been used effectively in a variety of application domains, much of the supporting research remains scattered in the literature, too often leaving scientists to develop multi-agent system (MAS) models and simulations from scratch. Multi-Agent Systems: Simulation and Applications provides an overdue review of the wide ranging facets of MAS simulation, i

  11. TEST SUITE GENERATION PROCESS FOR AGENT TESTING

    Directory of Open Access Journals (Sweden)

    HOUHAMDI ZINA

    2011-04-01

    Full Text Available Software agents are a promising technology for today's complex, distributed systems. Methodologies and techniques that address testing and reliability of multi agent systems are increasingly demanded, in particular to support automated test case generation and execution. In this paper, we introduce a novel approach for goal-oriented software agent testing. It specifies a testing process that complements the goal oriented methodology Tropos and reinforces the mutual relationship between goal analysis and testing. Furthermore, it defines a structured and comprehensive agent test suite generation process by providing a systematic way of deriving test cases from goal analysis.

  12. Integrating Interaction Framework for Agent Negotiation

    Institute of Scientific and Technical Information of China (English)

    肖正光; 王振杰; 徐良贤

    2003-01-01

    Agent negotiation has become increasingly important since the advent of electronic commerce.There are two kinds of interactions in the process of agent negotiation.One is the interaction between different agents,and the other is the interaction between the agent and the human user.In this paper,firstly,we introduce Q language,a scenario description language for designing interactions between agents and human users.Then we propose an integrating interaction framework for agent negotiation,in which both kinds of interactions are described by Q scenario.Our framework can make the interaction process open and easy to be understood by the users.Users can understand how the negotiation process goes and what is happening in the system including some erroneous or inappropriate actions caused by the negotiation agent.This gives the users a chance to terminate or change the behavior of negotiation agent in time to avoid unfavorable negotiation outcome.In addition,users can customize the agent's behaviors through visible interactions with it.

  13. Agent architecture for intelligent manufacturing systems

    Directory of Open Access Journals (Sweden)

    J. Madejski

    2008-08-01

    Full Text Available Purpose: Analysis is made of requirements posed by tasks of agents operating in the intelligent manufacturing systems and their resulting architecture is presented.Design/methodology/approach: Architecture of agent systems for industrial environment is presented, making it possible to generate the particular agents customised for the specific tasks, based on the automatic analysis of its required features.Findings: Extension of cellular automata approach underlying the conventional agent behaviour specification using the Fuzzy Cognitive Maps is presented in conjunction with the neural networks providing learning capability of the agents designed for the various levels of the manufacturing supervisory and execution systems. Adding reaction time specification to FCM makes it possible to analyse and design systems with the required behaviour.Research limitations/implications: Specific features of the designed agent architecture have been tested as separate mechanisms which can be merged into the final comprehensive at a later stage.Originality/value: Agent architecture is proposed for the industrial applications of single agents and their groups that can collaborate to achieve the individual and joint goals specified in reaction to changing environment conditions and into their agendas in XML format. Automatic generation of custom agent reactions models can be carried out based on a set of requirements that may be specified in the if-then rules form.

  14. Agent-Based Health Monitoring System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose combination of software intelligent agents to achieve decentralized reasoning, with fault detection and diagnosis using PCA, neural nets, and maximum...

  15. Decidability Classes for Mobile Agents Computing

    CERN Document Server

    Fraigniaud, Pierre

    2010-01-01

    We establish a classification of decision problems that are to be solved by mobile agents operating in unlabeled graphs, using a deterministic protocol. The classification is with respect to the ability of a team of agents to solve the problem, possibly with the aid of additional information. In particular, our focus is on studying differences between the decidability of a decision problem by agents and its verifiability when a certificate for a positive answer is provided to the agents. We show that the class MAV of mobile agents verifiable problems is much wider than the class MAD of mobile agents decidable problems. Our main result shows that there exist natural MAV-complete problems: the most difficult problems in this class, to which all problems in MAV are reducible. Our construction of a MAV-complete problem involves two main ingredients in mobile agents computability: the topology of the quotient graph and the number of operating agents. Beyond the class MAV we show that, for a single agent, three nat...

  16. Application Framework with Abstractions for Protocol and Agent Role

    DEFF Research Database (Denmark)

    Kristensen, Bent Bruun

    2016-01-01

    In multi-agent systems, agents interact by sending and receiving messages and the actual sequences of message form interaction structures between agents. Protocols and agents organized internally by agent roles support these interaction structures. Description and use of protocols based on agent...

  17. Licopeno como agente antioxidante Lycopene as an antioxidant agent

    Directory of Open Access Journals (Sweden)

    Najua Juma Ismail Esh Shami

    2004-06-01

    Full Text Available Este trabalho constitui uma revisão de dados científicos sobre o consumo de licopeno e sua ação como fator antioxidante. O licopeno é considerado o carotenóide que possui a maior capacidade seqüestrante do oxigênio singlete. Radicais livres agem continuamente no organismo, podendo desencadear danos celulares e serem os responsáveis pelo desenvolvimento de câncer e certas doenças crônicas. Estudos mostram que o licopeno protege moléculas de lipídios, lipoproteínas de baixa densidade, proteínas e DNA contra o ataque dos radicais, tendo um papel essencial na proteção de doenças. Como prevenção, preconiza-se o consumo de dietas ricas em alimentos fontes de licopeno: tomates e seus produtos (purê, pasta, catchup, mamão, pitanga e goiaba; que aportem cerca de 35mg de licopeno ao dia.This paper is a review of scientific data about lycopene as an antioxidant agent. Lycopene is considered the carotenoid that has the highest capacity of capturing the singlet oxygen. Free radicals are continuously acting on the organism, being capable of promoting cellular damage and development of cancer among other chronic diseases. Studies show that lycopene protects lipid molecules, low-density lipoproteins, proteins and DNA against the attack of free radicals. They have an essential function in the protection against diseases. As a precaution, one should eat foods that are a source of lycopene: tomatoes and tomato-products (purée, pasta, ketchup, papaya, pitanga and guava; to provide approximately 35mg of lycopene a day.

  18. Cutting agents for special metals

    International Nuclear Information System (INIS)

    The quantity of use of special metals has increased year after year in the Plasma Research Institute, Nagoya University, with the development of researches on plasma and nuclear fusion. Most of these special metals are hard to cut, and in order to secure the surface smoothness and dimensional accuracy, considerable efforts are required. The method of experiment is as follows: cutting agents salt water and acetone, rape-seed oil, sulfide and chloride oil and water soluble cutting oil W grade 3; metals to be cut niobium, molybdenum, tantalum, titanium and tungsten; cutting conditions cutting speed 4.7 to 90 m/min, feed 0.07 to 0.2 mm/rev, depth of cut 0.1 to 0.4 mm, tool cemented carbide bit. Chemicals such as tetrachloromethane and trichloroethane give excellent cutting performance, but the toxicity is intense and the stimulative odor exists, accordingly they are hard to use practically. Cutting was easier when the salt water added with acetone was used than the case of rape-seed oil, but salt water is corrosive. Recently, the machining of molybdenum has been often carried out, and the water soluble cutting oil was the best. It is also good for cutting stainless steel, and its lubricating property is improved by adding some additives such as sulfur, chlorine, phosphorus and molybdenum disulfide. However after cutting with it, washing is required. (Kako, I.)

  19. Departments as Agents of Change

    Science.gov (United States)

    Lagowski, J. J.

    1996-07-01

    Higher education is changing because it has no choice. And, for the most part, outside influences are dictating the processes of change. The more fortunate institutions have had a flat budget during this period, but most have been forced to deal with a declining revenue stream as well. Legislators seem bent on micromanaging state-supported institutions, even as they cut their support. Regulators demand greater institutional accountability. Students and their parents expect more service at lower prices and increased flexibility. Technological advances have dramatically affected the availability and accessibility of extant knowledge. It is no longer a question of whether institutions will change, but rather, who will control the change. Most institutions possess long-standing academic traditions, but these are placed at risk in an increasingly competitive market that holds little sympathy for such traditions and may even see them as obstacles or barriers. As a result, the change agents will undoubtedly have a profound effect on the very nature of academic institutions. From the academic point of view, it would seem prudent to attempt to manage the changes that will inevitably occur. A number of concerned observers, notably the Pew Higher Education Roundtable and the American Association for Higher Education, argue persuasively that the academic department is the logical focus for responding to the current winds of change. Using a marketing metaphor, the academic department has been likened to a "producers' cooperative" of services that consumers seek. Thus, the department should be held accountable for the quality of teaching delivered by its members, for the coherence of its major, for its contributions to the general education curriculum, and for supervising and rewarding its individual faculty members. If departments are to be held accountable, it is surely in their best interest to act in such a way that they are accountable. Expecting academic departments to be

  20. Pedagogical agent design: The impact of agent gender, ethnicity, and instructional role

    OpenAIRE

    Baylor, A. L.; Kim, Yanghee

    2004-01-01

    To investigate the role of pedagogical agent gender and ethnicity, 230 students were randomly assigned to one of twelve conditions, where agents differed by ethnicity (African-American, Caucasian), gender (male, female), and roles (expert, motivator, and mentor).

  1. Safe motion planning for mobile agents: A model of reactive planning for multiple mobile agents

    Energy Technology Data Exchange (ETDEWEB)

    Fujimura, Kikuo.

    1990-01-01

    The problem of motion planning for multiple mobile agents is studied. Each planning agent independently plans its own action based on its map which contains a limited information about the environment. In an environment where more than one mobile agent interacts, the motions of the robots are uncertain and dynamic. A model for reactive agents is described and simulation results are presented to show their behavior patterns. 18 refs., 2 figs.

  2. Core Competencies Of A Call Centre AgentCore Competencies Of A Call Centre Agent

    OpenAIRE

    Christine White; Vera Roos

    2005-01-01

    Call centre agents are becoming increasingly important in the call centre context. They act as a contact point between the customer and the company. Call centre agents should have certain competencies to perform their duties sufficiently. Identifying competencies, required to be effective agents, will ease the task of training and recruitment. Due to the interrelatedness of the call centre agent, the management of a call centre and customers, all relevant role players’ perceptions were taken ...

  3. Stock market dynamics created by interacting agents

    Directory of Open Access Journals (Sweden)

    Karl-Theodor Eisele

    2006-06-01

    Full Text Available We study a stock market model, consisting in a large number of agents, going eventually to infinity, and evaluate the stock price under the influence of opinions of different agents. Next we study the behavior of prices when the market is very nervous; there appear discontinuities (phase transitions which can be interpreted as stock market crashes.

  4. Explanation in human-agent teamwork

    NARCIS (Netherlands)

    Harbers, M.; Bradshaw, J.M.; Johnson, M.; Feltovich, P.; Bosch, K. van den; Meyer, J.J.C.

    2012-01-01

    There are several applications in which humans and agents jointly perform a task. If the task involves interdependence among the team members, coordination is required to achieve good team performance. This paper discusses the role of explanation in coordination in human-agent teams. Explanations ab

  5. Assurance in Agent-Based Systems

    International Nuclear Information System (INIS)

    Our vision of the future of information systems is one that includes engineered collectives of software agents which are situated in an environment over years and which increasingly improve the performance of the overall system of which they are a part. At a minimum, the movement of agent and multi-agent technology into National Security applications, including their use in information assurance, is apparent today. The use of deliberative, autonomous agents in high-consequence/high-security applications will require a commensurate level of protection and confidence in the predictability of system-level behavior. At Sandia National Laboratories, we have defined and are addressing a research agenda that integrates the surety (safety, security, and reliability) into agent-based systems at a deep level. Surety is addressed at multiple levels: The integrity of individual agents must be protected by addressing potential failure modes and vulnerabilities to malevolent threats. Providing for the surety of the collective requires attention to communications surety issues and mechanisms for identifying and working with trusted collaborators. At the highest level, using agent-based collectives within a large-scale distributed system requires the development of principled design methods to deliver the desired emergent performance or surety characteristics. This position paper will outline the research directions underway at Sandia, will discuss relevant work being performed elsewhere, and will report progress to date toward assurance in agent-based systems

  6. Designing Negotiating Agent for Automated Negotiations

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Traditional research in automated negotiation is focused on negotiation protocol and strategy.This paper studies automated negotiation from a new point of view, proposes a novel concept, namely negotiating agent, and discusses its significance in construction of automated negotiation system, with an abstract model formally described and the architecture designed, which supports both goal-directed reasoning and reactive response. A communication model was proposed to construct interaction mechanism used by negotiating agents, in which the negotiation language used by agents is defined.The communication model and the language are defined in a way general enough to support a wide variety of market mechanisms, thus being particularly suitable for flexible applications such as electronic business. The design and expression of the negotiation ontology is also discussed. On the base of the theoretical model of negotiating agent, negotiating agent architecture and negotiating agent communication model (NACM) are explicit and formal specifications for the agents negotiating in an E-business environment; especially, NACM defines the negotiation language template shared among all agents formally and explicitly. The novelty of the communication model is twofold.

  7. PU Sizing Agent Sector Starts Reform

    Institute of Scientific and Technical Information of China (English)

    Wang Lei

    2007-01-01

    @@ Polyurethane (PU) sizing agent is a thermoplastic PU elastomer extensively used in synthetic leather, artificial deerskin and electrostatic flocking sectors. The drastic production and demand increase of synthetic leather in China in recent years has promoted rapid consumption growth of PU sizing agent.

  8. VIRAL GASTROENTERITIS AGENTS AND WATERBORNE DISEASE

    Science.gov (United States)

    The application of electron microscopic techniques in the study of human gastroenteritis led in the 1970's to the identification of new viral agents that had previously escaped detection by routine cell culture procedures. These agents have been the focus of study by researchers ...

  9. Modeling agents with a theory of mind

    NARCIS (Netherlands)

    Harbers, M.; Bosch, K. van den; Meyer, J.J.C.

    2009-01-01

    Training systems with intelligent virtual agents provide an effective means to train people for complex, dynamic tasks like crisis management or firefighting. Virtual agents provide more adequate behavior and explanations if they not only take their own goals and beliefs into account, but also the a

  10. Practice among Novice Change Agents in Schools

    Science.gov (United States)

    Blossing, Ulf

    2016-01-01

    The aim of the article is to understand practice as negotiation of meaning among novice and internal change agents in school organisations. The research question is as follows: What themes of participation and reification/management occur among the change agents? The study was qualitative in design using the social learning theory of community of…

  11. Computational Intelligence Agent-Oriented Modelling

    Czech Academy of Sciences Publication Activity Database

    Neruda, Roman

    2006-01-01

    Roč. 5, č. 2 (2006), s. 430-433. ISSN 1109-2777 R&D Projects: GA MŠk 1M0567 Institutional research plan: CEZ:AV0Z10300504 Keywords : multi - agent system s * adaptive agent s * computational intelligence Subject RIV: IN - Informatics, Computer Science

  12. Transient Diversity in Multi-Agent Systems

    OpenAIRE

    Lyback, David

    2003-01-01

    Diversity is an important aspect of highly efficient multi-agent teams. We introduce the main factors that drive a multi-agent system in either direction along the diversity scale. A metric for diversity is described, and we speculate on the concept of transient diversity. Finally, an experiment on social entropy using a RoboCup simulated soccer team is presented.

  13. Security of Mobile Agents on the Internet.

    Science.gov (United States)

    Corradi, Antonio; Montanari, Rebecca; Stefanelli, Cesare

    2001-01-01

    Discussion of the Internet focuses on new programming paradigms based on mobile agents. Considers the security issues associated with mobile agents and proposes a security architecture composed of a wide set of services and components capable of adapting to a variety of applications, particularly electronic commerce. (Author/LRW)

  14. Agent programming languages: programming with mental models

    NARCIS (Netherlands)

    Hindriks, K.V.

    2001-01-01

    Intelligent Agents are personal assistants which can provide proactive support to users by executing routine activities like searching on the Internet, the scheduling of meetings, etc. The concept of an Intelligent Agent has its roots in Artificial Intelligence and provides a basis for the con

  15. Ultrasound contrast agents: An overview

    Energy Technology Data Exchange (ETDEWEB)

    Cosgrove, David [Imaging Sciences Department, Imperial College, Hammersmith Hospital, London (United Kingdom)]. E-mail: d.cosgrove@csc.mrc.ac.uk

    2006-12-15

    With the introduction of microbubble contrast agents, diagnostic ultrasound has entered a new era that allows the dynamic detection of tissue flow of both the macro and microvasculature. Underpinning this development is the fact that gases are compressible, and thus the microbubbles expand and contract in the alternating pressure waves of the ultrasound beam, while tissue is almost incompressible. Special software using multiple pulse sequences separates these signals from those of tissue and displays them as an overlay or on a split screen. This can be done at low acoustic pressures (MI < 0.3) so that the microbubbles are not destroyed and scanning can continue in real time. The clinical roles of contrast enhanced ultrasound scanning are expanding rapidly. They are established in echocardiography to improve endocardial border detection and are being developed for myocardial perfusion. In radiology, the most important application is the liver, especially for focal disease. The approach parallels that of dynamic CT or MRI but ultrasound has the advantages of high spatial and temporal resolution. Thus, small lesions that can be indeterminate on CT can often be studied with ultrasound, and situations where the flow is very rapid (e.g., focal nodular hyperplasia where the first few seconds of arterial perfusion may be critical to making the diagnosis) are readily studied. Microbubbles linger in the extensive sinusoidal space of normal liver for several minutes whereas they wash out rapidly from metastases, which have a low vascular volume and thus appear as filling defects. The method has been shown to be as sensitive as three-phase CT. Microbubbles have clinical uses in many other applications where knowledge of the microcirculation is important (the macrocirculation can usually be assessed adequately using conventional Doppler though there are a few important situations where the signal boost given by microbubbles is useful, e.g., transcranial Doppler for evaluating

  16. Your company's secret change agents.

    Science.gov (United States)

    Pascale, Richard Tanner; Sternin, Jerry

    2005-05-01

    Organizational change has traditionally come about through top-down initiatives such as hiring experts or importing best-of-breed practices. Such methods usually result in companywide rollouts of templates mandated from on high. These do little to get people excited. But within every organization, there are a few individuals who find unique ways to look at problems that seem impossible to solve. Although these change agents start out with the same tools and access to resources as their peers, they are able to see solutions where others do not. They find a way to bridge the divide between what is happening and what is possible. These positive deviants are the key, the authors believe, to a better way of creating organizational change. Your company can make the most of their methods by following six steps. In Step 1, Make the group the guru, the members of the community are engaged in the process of their own evolution. Step 2, Reframe through facts, entails restating the problem in a way that opens minds to new possibilities. Step 3, Make it safe to learn, involves creating an environment that supports innovative ideas. In Step 4, Make the problem concrete, the community combats abstraction by stating uncomfortable truths. In Step 5, Leverage social proof, the community looks to the larger society for examples of solutions that have worked in parallel situations. In Step 6, Confound the immune defense response, solutions are introduced organically from within the group in a way that promotes acceptance. Throughout the steps, the leader must suspend his or her traditional role in favor of more facilitatory practices. The positive-deviance approach has unearthed solutions to such complicated and diverse problems as malnutrition in Mali and human trafficking in East Java. This methodology can help solve even the most extreme dilemmas. PMID:15929405

  17. La descontaminación de las aguas del lago Izabal en Guatemala a través de la extracción de la planta Hydrilla verticillata (L.F Royle y su uso como sustrato alternativo para la producción de plántulas de chile pimiento en invernadero

    Directory of Open Access Journals (Sweden)

    Iván Dimitri Santos Castillo

    2010-01-01

    Full Text Available Se caracterizaron las principales propiedades físicas, químicas y biológicas de sustratos elaborados a base de residuos de hydrilla verticillata y su efecto sobre la germinación y desarrollo durante la fase de plántula de semillas de chile pimiento (variedad tropical irazú mejorado. Al analizar los resultados obtenidos tales como agua fácilmente aprovechable, capacidad de aereación, PH, porciento de germinación, germinación acumulada ( 24 DDS, altura de la planta (cm, diámetro del tallo (cm, peso fresco de la parte aérea y sistema radical (g, materia seca de la parte aérea y radical ( % , todo ello 50 días después de siembra (50 DDS, se obtiene que el mejor tratamiento bajo las condiciones y metodologías utilizadas es el N0 12 (H30-85-15, o sea, 85% de hydrilla con 30 días de compostaje + 15 % de perlita y se recomienda como sustituto alternativo del sustrato comercial (turba de sphagnum para la producción de plántulas de chile pimiento en pilones y con ello dar uso productivo a esta planta contaminante de los lagos de Guatemala.

  18. 9th KES Conference on Agent and Multi-Agent Systems : Technologies and Applications

    CERN Document Server

    Howlett, Robert; Jain, Lakhmi

    2015-01-01

    Agents and multi-agent systems are related to a modern software paradigm which has long been recognized as a promising technology for constructing autonomous, complex and intelligent systems. The topics covered in this volume include agent-oriented software engineering, agent co-operation, co-ordination, negotiation, organization and communication, distributed problem solving, specification of agent communication languages, agent privacy, safety and security, formalization of ontologies and conversational agents. The volume highlights new trends and challenges in agent and multi-agent research and includes 38 papers classified in the following specific topics: learning paradigms, agent-based modeling and simulation, business model innovation and disruptive technologies, anthropic-oriented computing, serious games and business intelligence, design and implementation of intelligent agents and multi-agent systems, digital economy, and advances in networked virtual enterprises. Published p...

  19. Advances on Practical Applications of Agents and Multi-Agent Systems 10th International Conference on Practical Applications of Agents and Multi-Agent Systems

    CERN Document Server

    Müller, Jörg; Rodríguez, Juan; Pérez, Javier

    2012-01-01

    Research on Agents and Multi-Agent Systems has matured during the last decade and many effective applications of this technology are now deployed. PAAMS provides an international forum to present and discuss the latest scientific developments and their effective applications, to assess the impact of the approach, and to facilitate technology transfer. PAAMS started as a local initiative, but has since grown to become THE international yearly platform to present, to discuss, and to disseminate the latest developments and the most important outcomes related to real-world applications. It provides a unique opportunity to bring multi-disciplinary experts, academics and practitioners together to exchange their experience in the development and deployment of Agents and Multi-Agent Systems. PAAMS intends to bring together researchers and developers from industry and the academic world to report on the latest scientific and technical advances on the application of multi-agent systems, to discuss and debate the major ...

  20. Highlights on Practical Applications of Agents and Multi-Agent Systems 10th International Conference on Practical Applications of Agents and Multi-Agent Systems

    CERN Document Server

    Sánchez, Miguel; Mathieu, Philippe; Rodríguez, Juan; Adam, Emmanuel; Ortega, Alfonso; Moreno, María; Navarro, Elena; Hirsch, Benjamin; Lopes-Cardoso, Henrique; Julián, Vicente

    2012-01-01

    Research on Agents and Multi-Agent Systems has matured during the last decade and many effective applications of this technology are now deployed. PAAMS provides an international forum to present and discuss the latest scientific developments and their effective applications, to assess the impact of the approach, and to facilitate technology transfer. PAAMS started as a local initiative, but has since grown to become THE international yearly platform to present, to discuss, and to disseminate the latest developments and the most important outcomes related to real-world applications. It provides a unique opportunity to bring multi-disciplinary experts, academics and practitioners together to exchange their experience in the development and deployment of Agents and Multi-Agent Systems. PAAMS intends to bring together researchers and developers from industry and the academic world to report on the latest scientific and technical advances on the application of multi-agent systems, to discuss and debate the major ...

  1. Security Issues in Mobile Agent Paradigm

    Directory of Open Access Journals (Sweden)

    Nitin Jain

    2011-05-01

    Full Text Available A mobile Agent is a Software program that migrates from node tonode of a heterogeneous network. They are goal-oriented i.e. workautonomously towards a goal, capable of suspending their executionon one platform and moving to other where they can resumeexecution using resources of these nodes and they meet and interactwith other agents. Agents may be stationary, always resident at asingle platform or mobile, capable of moving among differentplatforms at different time. The mobile agent paradigm providesmany benefits in developments of distributed application at the sametime introduce new requirements for security issues with thesesystems. In this paper we try to focus mainly on security issues thatarise when mobile agent paradigm comes into play.

  2. Fault Reconnaissance Agent for Sensor Networks

    Directory of Open Access Journals (Sweden)

    Elhadi M. Shakshuki

    2010-01-01

    Full Text Available One of the key prerequisite for a scalable, effective and efficient sensor network is the utilization of low-cost, low-overhead and high-resilient fault-inference techniques. To this end, we propose an intelligent agent system with a problem solving capability to address the issue of fault inference in sensor network environments. The intelligent agent system is designed and implemented at base-station side. The core of the agent system – problem solver – implements a fault-detection inference engine which harnesses Expectation Maximization (EM algorithm to estimate fault probabilities of sensor nodes. To validate the correctness and effectiveness of the intelligent agent system, a set of experiments in a wireless sensor testbed are conducted. The experimental results show that our intelligent agent system is able to precisely estimate the fault probability of sensor nodes.

  3. Development of Soda Residue Concrete Expansion Agent

    Institute of Scientific and Technical Information of China (English)

    WANG Bao-min; WANG Li-jiu; M F Mohd Zain; F C Lai

    2003-01-01

    A new type of concrete expansion agent has been successfully developed for the first time in the world by utilizing an industrial waste residue-soda residue and an industrial wasteliquor.Adding 3%-6% of the agent into Portland cement enables a shrinkage-compensating concrete to be prepared.Mortar and concrete containing this expansion agent have better shrinkage-compensating and mechanical properties.The raw materials component,production process,technical properties,micro-analysis of mortar made with this expansion agent,mechanism of expansion and research results are described in this article.The experimental results show that the new type of concrete expansion agent accords with the standard and its main mineral component is xCaO-ySO3-zAl2O3.

  4. A Network Management Framework Using Mobile Agents

    Directory of Open Access Journals (Sweden)

    Jonathan Lefebvre

    2006-01-01

    Full Text Available Network management of heterogeneous networks is still hard to achieve automatically and efficiently. In this study, we present a framework that has the ability to perform network management tasks on heterogeneous networks using mobile agents. This framework handles the inability of many network devices to run mobile agents. While the main focus of the project is the framework, we present an example of mobile agents that are able to locate a fixed set of network failures and detect the possible causes accurately. Experimental results show that some network management tasks can be more easily executed by mobile agents. In particular, search and diagnostic mobile agents are able to find more precisely a cause of a network failure by finding alternate paths to gather more data about the failure.

  5. Econophysics of agent-based models

    CERN Document Server

    Aoyama, Hideaki; Chakrabarti, Bikas; Chakraborti, Anirban; Ghosh, Asim

    2014-01-01

    The primary goal of this book is to present the research findings and conclusions of physicists, economists, mathematicians and financial engineers working in the field of "Econophysics" who have undertaken agent-based modelling, comparison with empirical studies and related investigations. Most standard economic models assume the existence of the representative agent, who is “perfectly rational” and applies the utility maximization principle when taking action. One reason for this is the desire to keep models mathematically tractable: no tools are available to economists for solving non-linear models of heterogeneous adaptive agents without explicit optimization. In contrast, multi-agent models, which originated from statistical physics considerations, allow us to go beyond the prototype theories of traditional economics involving the representative agent. This book is based on the Econophys-Kolkata VII Workshop, at which many such modelling efforts were presented. In the book, leading researchers in the...

  6. CEST and PARACEST MR contrast agents

    International Nuclear Information System (INIS)

    In this review we describe the status of development for a new class of magnetic resonance (MR) contrast agents, based on chemical exchange saturation transfer (CEST). The mathematics and physics relevant to the description of the CEST effect in MR are presented in an appendix published in the online version only. We discuss the issues arising when translating in vitro results obtained with CEST agents to using these MR agents in in vivo model studies and in humans. Examples are given on how these agents are imaged in vivo. We summarize the status of development of these CEST agents, and speculate about the next steps that may be taken towards the demonstration of CEST MR imaging in clinical applications

  7. Incorporating Inertia Into Multi-Agent Systems

    CERN Document Server

    Man, W C

    2005-01-01

    We consider a model that demonstrates the crucial role of inertia and stickiness in multi-agent systems, based on the Minority Game (MG). The inertia of an agent is introduced into the game model by allowing agents to apply hypothesis testing when choosing their best strategies, thereby reducing their reactivity towards changes in the environment. From massive numerical simulations, a remarkable improvement of global cooperation is observed throughout the whole phase space, and the maladaptation behaviour due to over-reaction of agents is removed. Also, these agents are found to be advantageous over the standard ones, which are sometimes too sensitive to attain a fair success rate. Analytical calculation on determining the minimum amount of inertia needed to achieve the above improvement is also provided, which is consistent with the numerical data.

  8. Ecology Based Decentralized Agent Management System

    Science.gov (United States)

    Peysakhov, Maxim D.; Cicirello, Vincent A.; Regli, William C.

    2004-01-01

    The problem of maintaining a desired number of mobile agents on a network is not trivial, especially if we want a completely decentralized solution. Decentralized control makes a system more r e bust and less susceptible to partial failures. The problem is exacerbated on wireless ad hoc networks where host mobility can result in significant changes in the network size and topology. In this paper we propose an ecology-inspired approach to the management of the number of agents. The approach associates agents with living organisms and tasks with food. Agents procreate or die based on the abundance of uncompleted tasks (food). We performed a series of experiments investigating properties of such systems and analyzed their stability under various conditions. We concluded that the ecology based metaphor can be successfully applied to the management of agent populations on wireless ad hoc networks.

  9. For whom will the Bayesian agents vote?

    Science.gov (United States)

    Caticha, Nestor; Cesar, Jonatas; Vicente, Renato

    2015-04-01

    Within an agent-based model where moral classifications are socially learned, we ask if a population of agents behaves in a way that may be compared with conservative or liberal positions in the real political spectrum. We assume that agents first experience a formative period, in which they adjust their learning style acting as supervised Bayesian adaptive learners. The formative phase is followed by a period of social influence by reinforcement learning. By comparing data generated by the agents with data from a sample of 15000 Moral Foundation questionnaires we found the following. 1. The number of information exchanges in the formative phase correlates positively with statistics identifying liberals in the social influence phase. This is consistent with recent evidence that connects the dopamine receptor D4-7R gene, political orientation and early age social clique size. 2. The learning algorithms that result from the formative phase vary in the way they treat novelty and corroborative information with more conservative-like agents treating it more equally than liberal-like agents. This is consistent with the correlation between political affiliation and the Openness personality trait reported in the literature. 3. Under the increase of a model parameter interpreted as an external pressure, the statistics of liberal agents resemble more those of conservative agents, consistent with reports on the consequences of external threats on measures of conservatism. We also show that in the social influence phase liberal-like agents readapt much faster than conservative-like agents when subjected to changes on the relevant set of moral issues. This suggests a verifiable dynamical criterium for attaching liberal or conservative labels to groups.

  10. Agent-based Modeling and Mapping of Manufacturing System

    Institute of Scientific and Technical Information of China (English)

    Z; Zhang

    2002-01-01

    Considering the gent-based modeling and mapping in m anufacturing system, in this paper, some system models are described, which are including: Domain Based Hierarchical Structure (DBHS), Cascading Agent Struc ture (CAS), Proximity Relation structure (PRS), and Bus-based network structure (BNS). In DBHS, one sort of agent individually delegates Domain Agents, Res ources Agents, UserInterface Agents and Gateway Agents and the other one is a br oker of tasks and process flow. Static agents representing...

  11. An Application of Mobile Agent System in Network Management

    Institute of Scientific and Technical Information of China (English)

    YANG Chen-xiang; DU Jun-ping; YIN Yi-xin

    2004-01-01

    This paper describes an application of a reusable mobile agent system in network management. A mobile agent reusable system is constructed to realize a new method in forming mobile agent systems. By using this method, an agent can change its route dynamically without making any change to its specific behavior. By classifying mobile agents into two categories, the task agent can be reusable in different networks. In this way, a mobile agent system can easily carry out network management tasks.

  12. Multi-Agent Systems for E-Commerce

    OpenAIRE

    Solodukha, T. V.; Sosnovskiy, O. A.; Zhelezko, B. A.

    2009-01-01

    The article focuses on multi-agent systems (MAS) and domains that can benefit from multi-agent technology. In the last few years, the agent based modeling (ABM) community has developed several practical agent based modeling toolkits that enable individuals to develop agent-based applications. The comparison of agent-based modeling toolkits is given. Multi-agent systems are designed to handle changing and dynamic business processes. Any organization with complex and distributed busine...

  13. Agent-Supported Mission Operations Teamwork

    Science.gov (United States)

    Malin, Jane T.

    2003-01-01

    This slide presentation reviews the development of software agents to support of mission operations teamwork. The goals of the work was to make automation by agents easy to use, supervise and direct, manage information and communication to decrease distraction, interruptions, workload and errors, reduce mission impact of off-nominal situations and increase morale and decrease turnover. The accomplishments or the project are: 1. Collaborative agents - mixed initiative and creation of instructions for mediating agent 2. Methods for prototyping, evaluating and evolving socio-technical systems 3. Technology infusion: teamwork tools in mISSIons 4. Demonstrations in simulation testbed An example of the use of agent is given, the use of an agent to monitor a N2 tank leak. An incomplete instruction to the agent is handled with mediating assistants, or Intelligent Briefing and Response Assistant (IBRA). The IBRA Engine also watches data stream for triggers and executes Act-Whenever actions. There is also a Briefing and Response Instruction (BRI) which is easy for a discipline specialist to create through a BRI editor.

  14. Persistent agents in Axelrod's social dynamics model

    Science.gov (United States)

    Reia, Sandro M.; Neves, Ubiraci P. C.

    2016-01-01

    Axelrod's model of social dynamics has been studied under the effect of external media. Here we study the formation of cultural domains in the model by introducing persistent agents. These are agents whose cultural traits are not allowed to change but may be spread through local neighborhood. In the absence of persistent agents, the system is known to present a transition from a monocultural to a multicultural regime at some critical Q (number of traits). Our results reveal a dependence of critical Q on the occupation probability p of persistent agents and we obtain the phase diagram of the model in the (p,Q) -plane. The critical locus is explained by the competition of two opposite forces named here barrier and bonding effects. Such forces are verified to be caused by non-persistent agents which adhere (adherent agents) to the set of traits of persistent ones. The adherence (concentration of adherent agents) as a function of p is found to decay for constant Q. Furthermore, adherence as a function of Q is found to decay as a power law with constant p.

  15. Dynamic Channel Allocation Management Using Agents Technology

    Directory of Open Access Journals (Sweden)

    Ion BOGDAN

    2009-07-01

    Full Text Available Channel allocation schemes are management techniques meant to solve the radio access problem in the telecommunications area. There are several known schemes namely: static, dynamic, hybrid and flexible channel allocation schemes. In our work we developed the channel allocation scheme using a decentralized structure, based on software agents. In order to create such a structure, some functions must be carried out by some specialized functional entities. Each functional entity is implemented with an agent, having a specific role. Using this manner of implementation, different functions of the system can be implemented at different sites, located apart and also the structure can be modularized. In our work we have created the agents structure and the communications between agents, on the use of Multiagent Systems Engineering Technology. We also involved the AgentTool platform to automate the creation of the agents structure and the code resulted was in Java. In order to realize the test of our system we considered a shape of 21 radio areas, each including a number of users. Each wireless user can initiate a number of calls per hour and each call last a holding time. The communications between agents were realized for the TCP/IP protocol, based on socket connections.

  16. [Decorporation agents for internal radioactive contamination].

    Science.gov (United States)

    Ohmachi, Yasushi

    2015-01-01

    When radionuclides are accidentally ingested or inhaled, blood circulation or tissue/organ deposition of the radionuclides causes systemic or local radiation effects. In such cases, decorporation therapy is used to reduce the health risks due to their intake. Decorporation therapy includes reduction and/or inhibition of absorption from the gastrointestinal tract, isotopic dilution, and the use of diuretics, adsorbents, and chelating agents. For example, penicillamine is recommended as a chelating agent for copper contamination, and diethylene triamine pentaacetic acid is approved for the treatment of internal contamination with plutonium. During chelation therapy, the removal effect of the drugs should be monitored using a whole-body counter and/or bioassay. Some authorities, such as the National Council on Radiation Protection and Measurements and International Atomic Energy Agency, have reported recommended decorporation agents for each radionuclide. However, few drugs are approved by the US Food and Drug Administration, and many are off-label-use agents. Because many decontamination agents are drugs that have been available for a long time and have limited efficacy, the development of new, higher-efficacy drugs has been carried out mainly in the USA and France. In this article, in addition to an outline of decorporation agents for internal radioactive contamination, an outline of our research on decorporation agents for actinide (uranium and plutonium) contamination and for radio-cesium contamination is also presented. PMID:25832835

  17. Agent and multi-Agent systems in distributed systems digital economy and e-commerce

    CERN Document Server

    Hartung, Ronald

    2013-01-01

    Information and communication technology, in particular artificial intelligence, can be used to support economy and commerce using digital means. This book is about agents and multi-agent distributed systems applied to digital economy and e-commerce to meet, improve, and overcome challenges in the digital economy and e-commerce sphere. Agent and multi-agent solutions are applied in implementing real-life, exciting developments associated with the need to eliminate problems of distributed systems.   The book presents solutions for both technology and applications, illustrating the possible uses of agents in the enterprise domain, covering design and analytic methods, needed to provide a solid foundation required for practical systems. More specifically, the book provides solutions for the digital economy, e-sourcing clusters in network economy, and knowledge exchange between agents applicable to online trading agents, and security solutions to both digital economy and e-commerce. Furthermore, it offers soluti...

  18. Designing Agent Utilities for Coordinated, Scalable and Robust Multi-Agent Systems

    Science.gov (United States)

    Tumer, Kagan

    2005-01-01

    Coordinating the behavior of a large number of agents to achieve a system level goal poses unique design challenges. In particular, problems of scaling (number of agents in the thousands to tens of thousands), observability (agents have limited sensing capabilities), and robustness (the agents are unreliable) make it impossible to simply apply methods developed for small multi-agent systems composed of reliable agents. To address these problems, we present an approach based on deriving agent goals that are aligned with the overall system goal, and can be computed using information readily available to the agents. Then, each agent uses a simple reinforcement learning algorithm to pursue its own goals. Because of the way in which those goals are derived, there is no need to use difficult to scale external mechanisms to force collaboration or coordination among the agents, or to ensure that agents actively attempt to appropriate the tasks of agents that suffered failures. To present these results in a concrete setting, we focus on the problem of finding the sub-set of a set of imperfect devices that results in the best aggregate device. This is a large distributed agent coordination problem where each agent (e.g., device) needs to determine whether to be part of the aggregate device. Our results show that the approach proposed in this work provides improvements of over an order of magnitude over both traditional search methods and traditional multi-agent methods. Furthermore, the results show that even in extreme cases of agent failures (i.e., half the agents failed midway through the simulation) the system's performance degrades gracefully and still outperforms a failure-free and centralized search algorithm. The results also show that the gains increase as the size of the system (e.g., number of agents) increases. This latter result is particularly encouraging and suggests that this method is ideally suited for domains where the number of agents is currently in the

  19. Fluorescence quenching of flavins by reductive agents

    Science.gov (United States)

    Penzkofer, A.; Bansal, A. K.; Song, S.-H.; Dick, B.

    2007-07-01

    The fluorescence behaviour of the flavins riboflavin, flavin mononucleotide (FMN), flavin adenine dinucleotide (FAD), and lumiflavin in aqueous solution at pH 8 in the presence of the reducing agents β-mercaptoethanol (β-ME), dithiothreitol (DTT), and sodium nitrite (NaNO 2) is studied under aerobic conditions. The fluorescence quantum yields and fluorescence lifetimes are determined as a function of the reducing agent concentration. For all three reducing agents diffusion controlled dynamic fluorescence quenching is observed which is thought to be due to photo-induced reductive electron transfer. For DTT additionally static fluorescence quenching occurs.

  20. Information Service Model with Mobile Agent Supported

    Institute of Scientific and Technical Information of China (English)

    邹涛; 王继成; 张福炎

    2000-01-01

    Mobile Agent is a kind of novel agent technology characterized by mobile, intelligent, parallel and asynchronous computing. In this paper, a new information service model that adopts mobile agent technology is introduced first,and then an experimental system DOLTRIA system that is implemented based on the model is described. The DOLTRIA system implemented by WWW framework and Java can search for relevant HTML documents on a set of Web servers. The result of experiments shows that performance improvement can be achieved by this model, and both the elapsed time and network traffic are reduced significantly.

  1. Fluorescence quenching of flavins by reductive agents

    Energy Technology Data Exchange (ETDEWEB)

    Penzkofer, A. [Institut II - Experimentelle und Angewandte Physik, Universitaet Regensburg, Universitaetsstrasse 31, D-93053 Regensburg (Germany)], E-mail: alfons.penzkofer@physik.uni-regensburg.de; Bansal, A.K. [Institut II - Experimentelle und Angewandte Physik, Universitaet Regensburg, Universitaetsstrasse 31, D-93053 Regensburg (Germany); Song, S.-H.; Dick, B. [Institut fuer Physikalische und Theoretische Chemie, Universitaet Regensburg, Universitaetsstrasse 31, 93053 Regensburg (Germany)

    2007-07-09

    The fluorescence behaviour of the flavins riboflavin, flavin mononucleotide (FMN), flavin adenine dinucleotide (FAD), and lumiflavin in aqueous solution at pH 8 in the presence of the reducing agents {beta}-mercaptoethanol ({beta}-ME), dithiothreitol (DTT), and sodium nitrite (NaNO{sub 2}) is studied under aerobic conditions. The fluorescence quantum yields and fluorescence lifetimes are determined as a function of the reducing agent concentration. For all three reducing agents diffusion controlled dynamic fluorescence quenching is observed which is thought to be due to photo-induced reductive electron transfer. For DTT additionally static fluorescence quenching occurs.

  2. On agent-mediated electronic commerce

    OpenAIRE

    He, M.; Jennings, N. R.; Leung, H.

    2003-01-01

    This paper surveys and analyzes the state of the art of agent-mediated electronic commerce (e-commerce), concentrating particularly on the business-to-consumer (B2C) and business-to-business (B2B) aspects. From the consumer buying behavior perspective, agents are being used in the following activities: need identification, product brokering, buyer coalition formation, merchant brokering, and negotiation. The roles of agents in B2B e-commerce are discussed through the business-to-business tran...

  3. Towards Culturally-Aware Virtual Agent Systems

    DEFF Research Database (Denmark)

    Endrass, Birgit; André, Elisabeth; Rehm, Matthias

    2010-01-01

    game-like environment in a more interesting way than for example learning with a textbook. The authors support the idea that virtual agents are a great opportunity for teaching cultural awareness. Realizing this, the concept of culture needs to be translated into computational models and the advantages...... of different systems using virtual agents need to be considered. Therefore, the authors reflect in this chapter on how virtual agents can help to learn about culture, scan definitions of culture from the social sciences, give an overview on how multiagent systems developed over time and classify the...

  4. Receptor binding studies of soft anticholinergic agents

    OpenAIRE

    Huang, Fenglei; Buchwald, Peter; Browne, Clinton E.; Farag, Hassan H.; Wu, Wnei-Mei; Ji, Fubao; Hochhaus, Guenther; Bodor, Nicholas

    2001-01-01

    Receptor binding studies were performed on 24 soft anticholinergic agents and 5 conventional anticholinergic agents using 4 cloned human muscarinic receptor subtypes. The measured pKi values of the soft anticholinergic agents ranged from 6.5 to 9.5, with the majority being in the range of 7.5 to 8.5. Strong correlation was observed between the pKis determined here and the pA2 values measured earlier in guinea pig ileum contraction assays. The corresponding correlation coefficients (r2) were 0...

  5. Edificios Inteligentes: el enfoque multi-agente

    OpenAIRE

    Errecalde, Marcelo Luis; Lasso, Marta; Villagra, A.; Pandolfi, Daniel; San Pedro, María Eugenia de

    2006-01-01

    Este artículo describe, en forma resumida, parte de los trabajos de investigación y desarrollo que recientemente han comenzado en el Laboratorio de Tecnologías Emergentes (LabTEm) con la colaboración de la línea “Agentes y Sistemas Multi-Agente"del Laboratorio de Investigación y Desarrollo en Inteligencia Computacional (LIDIC). El objetivo de este trabajo es abordar la problemática general de la Administración de Edificios y ambientes Inteligentes mediante el uso de Sistemas Multi-agente. Par...

  6. Process for encapsulating active agents in gels

    OpenAIRE

    Yilmaz, G.; Jongboom, R.O.J.; Oosterhaven, J.

    2001-01-01

    The present invention relates to a process for encapsulating an active agent in a biopolymer in the form of a gel, comprising the steps of: a) forming a dispersion or solution of the biopolymer in water; and b) adding the active agent to the dispersion or solution obtained in step a); wherein the biopolymer is at least partially dissolved before and/or after addition of the active agent. The gels obtained with the present invention are particularly suitable for coating or impregnating packagi...

  7. Agentes de software móviles

    OpenAIRE

    Crisman Martínez Barrera

    2001-01-01

    Los agentes móviles son programas de software inteligentes que realizan un objetivo que involucran desarrollos soportados en técnicas de Inteligencia Artificial, los cuales pretenden facilitar la interoperabilidad de sistemas. Este artículo define las disciplinas, plataformas y herramientas necesarias para el desarrollo de agentes móviles, sus características principales y las arquitecturas predominantes de éstas; presenta además una evaluación de sus perspectivas futuras.Mobile agents are in...

  8. Cognitive agent programming : A semantic approach

    OpenAIRE

    Riemsdijk, van, J.F.

    2006-01-01

    In this thesis we are concerned with the design and investigation of dedicated programming languages for programming agents. We focus in particular on programming languages for rational agents, i.e., flexibly behaving computing entities that are able to make "good" decisions about what to do. An important line of research in this area is based on Bratman’s so-called Belief Desire Intention (BDI) philosophy. The idea of BDI philosophy is that the behavior of rational agents can be predicted by...

  9. Intelligent agent based control of TL-1

    International Nuclear Information System (INIS)

    The Agent based control of complex systems is becoming popular due to its ability to identify the critical situation and its ability to dynamically search for the best available solution to the problem with constrained optimization of the inputs. In this paper we are presenting the architecture of intelligent agent for automatic control of power supplies of TL-1 (Transfer Line 1) to maximise the injection process against the changes in the input beam obtained from Microtron. The paper discusses the results obtained by applying this agent architecture to the accelerator model comprises of Microtron output, TL-1 and booster. (author)

  10. Pharmacologic agents for mucus clearance in bronchiectasis.

    Science.gov (United States)

    Nair, Girish B; Ilowite, Jonathan S

    2012-06-01

    There are no approved pharmacologic agents to enhance mucus clearance in non-cystic fibrosis (CF) bronchiectasis. Evidence supports the use of hyperosmolar agents in CF, and studies with inhaled mannitol and hypertonic saline are ongoing in bronchiectasis. N-acetylcysteine may act more as an antioxidant than a mucolytic in other lung diseases. Dornase α is beneficial to patients with CF, but is not useful in patients with non-CF bronchiectasis. Mucokinetic agents such as β-agonists have the potential to improve mucociliary clearance in normals and many disease states, but have not been adequately studied in patients with bronchiectasis. PMID:22640851

  11. Agent Based Processing of Global Evaluation Function

    CERN Document Server

    Hossain, M Shahriar; Joarder, Md Mahbubul Alam

    2011-01-01

    Load balancing across a networked environment is a monotonous job. Moreover, if the job to be distributed is a constraint satisfying one, the distribution of load demands core intelligence. This paper proposes parallel processing through Global Evaluation Function by means of randomly initialized agents for solving Constraint Satisfaction Problems. A potential issue about the number of agents in a machine under the invocation of distribution is discussed here for securing the maximum benefit from Global Evaluation and parallel processing. The proposed system is compared with typical solution that shows an exclusive outcome supporting the nobility of parallel implementation of Global Evaluation Function with certain number of agents in each invoked machine.

  12. Francisella tularensis - potential biological agent

    International Nuclear Information System (INIS)

    Francisella tularensis is a small, nonmotile, aerobic, gram-negative coccobacillus capable of surviving for weeks at low temperatures in water, moist soil, hay, straw, or decaying animal carcasses. F. tularensis is the causative of the zoonotic disease tularemia. This bacterium was first identified in ground squirrels in Tulare County, California (1912). The human disease was recognized and described by Edward Francis (1922) as tularemia, and the agent was renamed Francisella tularensis in his honor. F. tularensis is one of the most infectious bacterial pathogens known, as few as 10-50 organisms can cause disease. Humans can become incidentally infected through diverse environmental exposures: bites by infected arthropods; handling infectious animal tissues or fluids; direct contact with or ingestion of contaminated food, water, or soil and inhalation of infective aerosols. Humans can develop severe and sometimes fatal illness, but do not transmit the disease to others. F. tularensis have few subspecies: 1) F. tularensis subsp. tularensis (type A), highly virulent, found only in North America. The bacterium is transmitted among animals and from animals to humans by ticks, occasionally deerfly, or by aerosols; 2) F. tularensis subsp. holarctica (type B), moderately virulent, occurs in Euroasia and North America, mainly associated with streams, lakes, ponds, rivers and semi-aquatic animals such as muskrats and beavers (water-borne disease). Type B tularemia has been observed during war times (during Second World War 100 000 cases occurred each year, in Kosovo in 2000 and 2003 over 300 cases each year); 3) F. tularensis subsp. mediasiatica, rarely reported, isolated only in Kazahstan and Turkmenistan; 4) F. tularensis subsp. novicida is of low virulence, isolated in USA, Canada, Spain and Australia; 5) F. tularensis subsp. philomiragia, is of low virulence, associated with salt water (Atlantic, Mediterranean). Tularemia is very rear in Macedonia, but in 1996 an

  13. RESEARCH ON A SOCCER SERVER TEAM WITH ENVIRONMENTAL-AGENTS

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    This paper proposed a new agent model, which applies the agent-oriented paradigm to represent multiple objects. This agent model consists of three types of agents as follows: (a) an upperagent which describes an autonomous and dynamic object; (b) a lower-agent which describes a reactive and static object; and (c) an environ-mental-agent which describes the environment of the other agents. As an example, it considered soccer players (a kind of multiple objects) in environmental-agent. Three kinds of soccer agents were constructed with different powers. With soccer server the soccer games were simulated to confirm the effectiveness of our model.

  14. Learning-by-Teaching: Designing Teachable Agents with Intrinsic Motivation

    Science.gov (United States)

    Zhao, Guopeng; Ailiya; Shen, Zhiqi

    2012-01-01

    Teachable agent is a type of pedagogical agent which instantiates Learning-by-Teaching theory through simulating a "naive" learner in order to motivate students to teach it. This paper discusses the limitation of existing teachable agents and incorporates intrinsic motivation to the agent model to enable teachable agents with initiative behaviors…

  15. Formalizing argument-based agent interaction in electronic institutions

    OpenAIRE

    Chesñevar, Carlos Iván

    2001-01-01

    During the last decade the notion of agent has gained acceptance within the AI community, mainly due to its adequacy to formalize complex environments. Agents can be thought as active software objects, which may be autonomous and able to perceive, reason, act, and interact with other agents. When agents interact with each other, a multi-agent system (MAS) arises.

  16. A Highly Secure Mobile Agent System Architecture

    Science.gov (United States)

    Okataku, Yasukuni; Okutomi, Hidetoshi; Yoshioka, Nobukazu; Ohgishi, Nobuyuki; Honiden, Shinichi

    We propose a system architecture for mobile agents to improve their security in the environments of insecure networks and non-sophisticated terminals such as PDAs. As mobile agents freely migrate onto their favorite terminals through insecure networks or terminals, it is not appropriate for them to store some secret information for authentication and encryption/decryption. We introduce one and more secure nodes(OASIS NODE) for securely generating and verifying authentication codes. The each agent’s data are encrypted by a pseudo-chaos cipher mechanism which doesn’t need any floating processing co-processor. We’ve constructed a prototype system on a Java mobile agent framework, “Bee-gent" which implements the proposed authentication and cipher mechanisms, and evaluated their performances and their applicability to business fields such as an auction system by mobile agents.

  17. Study of Desorption Agent for LADS Process

    Institute of Scientific and Technical Information of China (English)

    Zhang Xiaojing; Qin Ruyi; Liu Jinlong

    2003-01-01

    This article refers to the procedure for selection, evaluation and development of the LADS-D desorption agent associated with the LADS-A adsorbent used in the non-hydroprocessing adsorptive desulfurization (LADS) process for FCC naphtha developed by LPEC Refining Research Institute. The LADS-D desorption agent can effectively remove the sulfides adsorbed on the LADS-A adsorbent. The saturated LADS-A adsorbent can be instantly regenerated by the LADS-D desorption agent to recover its adsorption activity. The LADS-D desorption agent can not only effectively remove all impurities adsorbed on the adsorbent, but also has strong ability to dissolve the impurities to keep a stable desorption efficiency of adsorbent to be basically commensurate with fresh adsorbent after extended use.

  18. Autonomic Management for Multi-agent Systems

    Directory of Open Access Journals (Sweden)

    Nadir kamal Salih

    2011-09-01

    Full Text Available Autonomic computing is a computing system that can manage itself by self-configuration, self-healing, self-optimizing and self-protection. Researchers have been emphasizing the strong role that multi agent systems can play progressively towards the design and implementation of complex autonomic systems. The important of autonomic computing is to create computing systems capable of managing themselves to a far greater extent than they do today. With the nature of autonomy, reactivity, sociality and pro-activity, software agents are promising to make autonomic computing system a reality. This paper mixed multi-agent system with autonomic feature that completely hides its complexity from users/services. Mentioned Java Application Development Framework (JADE as platform example of this environment, could applied to web services as front end to users. With multi agent support it also provides adaptability, intelligence, collaboration, goal oriented interactions, flexibility, mobility and persistence in software systems.

  19. Agentes de software móviles

    Directory of Open Access Journals (Sweden)

    Crisman Martínez Barrera

    2001-10-01

    Full Text Available Los agentes móviles son programas de software inteligentes que realizan un objetivo que involucran desarrollos soportados en técnicas de Inteligencia Artificial, los cuales pretenden facilitar la interoperabilidad de sistemas. Este artículo define las disciplinas, plataformas y herramientas necesarias para el desarrollo de agentes móviles, sus características principales y las arquitecturas predominantes de éstas; presenta además una evaluación de sus perspectivas futuras.Mobile agents are intelligent software programs that can obtain an objective that involucrates developments supported in Artificial Intelligence techniques. These pretend to facilitate the interoperability of systems. This article defines disciplines, platforms and tools necessary for the development of mobile agents, their principal characteristics and the predominant architectures of these. A final evaluation and future perspectives are offered.

  20. Spatial interactions in agent-based modeling

    CERN Document Server

    Ausloos, Marcel; Merlone, Ugo

    2014-01-01

    Agent Based Modeling (ABM) has become a widespread approach to model complex interactions. In this chapter after briefly summarizing some features of ABM the different approaches in modeling spatial interactions are discussed. It is stressed that agents can interact either indirectly through a shared environment and/or directly with each other. In such an approach, higher-order variables such as commodity prices, population dynamics or even institutions, are not exogenously specified but instead are seen as the results of interactions. It is highlighted in the chapter that the understanding of patterns emerging from such spatial interaction between agents is a key problem as much as their description through analytical or simulation means. The chapter reviews different approaches for modeling agents' behavior, taking into account either explicit spatial (lattice based) structures or networks. Some emphasis is placed on recent ABM as applied to the description of the dynamics of the geographical distribution o...