WorldWideScience

Sample records for perteneciente al voluntariado

  1. Análisis económico y financiero de las empresas cotizadas pertenecientes al sector de las energías renovables

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    Rodríguez Regueiro, Luis Manuel

    2012-01-01

    Situados en este contexto, el objetivo de este Trabajo Fin de Master es ofrecer una visión del sector de las energías renovables, mediante el estudio de sus características y su funcionamiento, y analizar la situación económica y financiera que presentan las empresas cotizadas pertenecientes al sector de las energías renovables.

  2. Cuatro nuevas especies del género Liolaemus (Iguania: Liolaemidae, pertenecientes al grupo boulengeri, de la Patagonia, Argentina

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    Abdala, Cristian Simón

    2003-12-01

    Full Text Available Se describen cuatro nuevas especies del género Liolaemus, pertenecientes al grupo boulengeri, caracterizado por la presencia de un parche femoral de escamas agrandadas en la parte posterior del fémur. Una especie fue colectada en el sur de la provincia de Neuquén y las otras tres en el suroeste, centro y este de la provincia de Río Negro, en la Patagonia Argentina. Dentro del grupo las nuevas especies están relacionadas fenéticamente a Liolaemus boulengeri. Se estudiaron 98 caracteres morfológicos externos, referidos principalmente a caracteres de lepidosis, patrón de coloración y proporciones corporales, corrientemente estudiados en Liolaemus. Las diferencias más significativas entre estas especies y Liolaemus boulengeri se dan principalmente en el patrón de coloración y en algunos caracteres de escamación. Estas especies ocupan parte de las tres regiones patagónicas que se diferencian con base en la orografía y vegetación asociada. Las nuevas especies del centro y suroeste de la provincia de Río Negro, soportan grandes diferencias de temperatura diarias y estacionales. Las cuatro especies que se describen aquí se alimentan principalmente de insectos. Four new species of Liolaemus are described from the Patagonia region of southern Argentina. One species was collected in southern Neuquén Province and the other three are from Río Negro Province. Each of the new species has a patch of enlarged scales on the posterior surface of the thighs, indicating their relationship to members of the boulengeri group. Within this group, the four new species are morphologically most similar, and may be most closely related to, Liolaemus boulengeri. A total of 98 external morphological characters, principally squamation, color pattern, and body proportions, were recorded for these new members of the boulengeri group and compared with those for Liolaemus boulengeri. Significant differences between the new species and Liolaemus boulengeri were

  3. Cepa de Trichoderma útil para el tratamiento y/o prevención de infecciones provocadas por hongos pertenecientes al género Verticillium

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    Barroso-Albarracín, Juan Bautista; Chaki, Mounira; Mercado-Blanco, Jesús; Valverde-Corredor, Antonio; López García, Antonio Alejandro

    2011-01-01

    La invención se refiere al uso de la cepa de hongos Trichoderma harzianum CECT 2413 para la prevención y/o tratamiento de infecciones de plantas y/o suelos provocadas por hongos fitopatógenos pertenecientes al género Verticíllium, preferiblemente por los patotipos defoliante o no defoliante de Verticillium dahliae, agente causante de la Verticilosis del olivo. Además, la invención propone el uso de esta cepa de hongos en combinación con otros hongos del género Trichoderma.

  4. Experiencia de la implementación de la escuela de voluntariado estudiantil en la UPN

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    Bolaños Vidal, Libia Zaida; Cueva Rodríguez, María Eloísa; Quispe López, Leila Adali; Rafael Espinoza, Junior; Ruiz Bautista, Ana Katherine; Samame Colunche, Dalí; Sánchez Tisnado, Alejandra; Valderrama Reyes, Daniela; Cueva Urra, Marlies Alicia

    2016-01-01

    RESUMEN La investigación busca conocer las experiencias que construyen los voluntarios participantes en la primera escuela de voluntariado de la Universidad Privada del Norte en Trujillo-Perú. Para lo cual se efectuó un estudio cualitativo empleando la técnica de la observación participante. La escuela inició con 71 asistentes; además se dictaron cuatro talleres, denominados de la siguiente manera: Introducción al voluntariado y ley del voluntariado, Habilidades sociales: compromiso socia...

  5. Voluntariado y Edades: Observaciones desde la juventud, adultez y vejez voluntaria de la ciudad de Santiago

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    Nelson Sepúlveda Miranda; Antonio Muñoz Mayne-Nicholls

    2009-01-01

    El voluntariado, entendido como una manifestación de la colaboración, se construye a partir de los observadores que describen y explican su realidad. En este sentido, el presente texto abordará las comunicaciones más recurrentes sobre voluntariado, identificadas por jóvenes, adultos y adultos mayores voluntarios de la ciudad de Santiago de Chile; quienes, al producir comunicaciones colaborativas, construyen -a su vez- sus propias edades.

  6. Voluntariado y Edades: Observaciones desde la juventud, adultez y vejez voluntaria de la ciudad de Santiago

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    Nelson Sepúlveda Miranda

    2009-01-01

    Full Text Available El voluntariado, entendido como una manifestación de la colaboración, se construye a partir de los observadores que describen y explican su realidad. En este sentido, el presente texto abordará las comunicaciones más recurrentes sobre voluntariado, identificadas por jóvenes, adultos y adultos mayores voluntarios de la ciudad de Santiago de Chile; quienes, al producir comunicaciones colaborativas, construyen -a su vez- sus propias edades.

  7. Competitividad de las agroindustrias del limón pertenecientes al clúster del limón mexicano en Colima, México

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    Pablo Adrián Magaña Sánchez

    2010-10-01

    Full Text Available El presente trabajo se refiere al estudio del nivel de competitividad de las Agroindustrias del Limón pertenecientes al clúster del limón mexicano en Colima, México en base al modelo del IMD (International Institute for Management Development como teoría de soporte. En este estudio se diseño y utilizó un instrumento de medición de acuerdo al modelo anteriormente mencionado adaptando las variables para el contexto de nuestro estudio. Es necesario mencionar que el modelo del IMD se utilizó para medir la competitividad de los países y para esta investigación se está generando un instrumento nuevo considerando el entorno de la investigación que son las empresas agroindustriales del limón mexicano en Colima. Esta investigación se orientó a Mipymes de tipo agroindustrial del limón. Posteriormente a través de análisis estadístico se determinó el nivel de competitividad de las mismas y qué variables o criterios son los que influyen significativamente en la competitividad.

  8. Factores resilientes asociados al rendimiento académico en estudiantes pertenecientes a la Universidad de Sucre (Colombia)

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    Sonia Carolina Peralta Díaz; Andrés Fernando Ramírez Giraldo; Hernando Castaño Buitrago

    2006-01-01

    El objetivo de la investigación fue determinar si existen factores resilientes asociados al rendimiento académico en una muestra de estudiantes universitarios. Dicha muestra estuvo compuesta por 345 estudiantes, distribuidos en 2 grupos, bajo rendimiento y alto rendimiento, entre los 16 y 38 años de edad. El instrumento utilizado fue el cuestionario de resiliencia para estudiantes universitarios (cre-u). Los resultados, después de aplicar el modelo estadístico de regresión logí...

  9. Factores resilientes asociados al rendimiento académico en estudiantes pertenecientes a la Universidad de Sucre (Colombia

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    Sonia Carolina Peralta Díaz

    2006-01-01

    Full Text Available El objetivo de la investigación fue determinar si existen factores resilientes asociados al rendimiento académico en una muestra de estudiantes universitarios. Dicha muestra estuvo compuesta por 345 estudiantes, distribuidos en 2 grupos, bajo rendimiento y alto rendimiento, entre los 16 y 38 años de edad. El instrumento utilizado fue el cuestionario de resiliencia para estudiantes universitarios (cre-u. Los resultados, después de aplicar el modelo estadístico de regresión logística binaria (Oportunidad Relativa, indican que existen diferencias estadísticamente significativas de los factores resilientes entre los estudiantes con alto y bajo rendimiento académico, y este último grupo es el que se encuentra en mayor riesgo debido a que existen menos factores que se asocian a él.

  10. Factores explicativos de la práctica de voluntariado corporativo en España

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    Alicia Guerra Guerra

    2013-12-01

    Full Text Available Entendemos por voluntariado corporativo el practicado por los empleados bajo el liderazgo y la organización de la empresa. Se trata de una herramienta de la responsabilidad social de la empresa que permite a esta transmitir confianza ante la sociedad, al tiempo que genera importantes beneficios para ella, sus empleados y la comunidad que lo recibe. Estos argumentos, junto al llamamiento de la UE y del gobierno español a profundizar en el estudio de esta forma de voluntariado dada la insuficiencia de investigaciones en este campo, la debilidad del voluntariado corporativo en España respecto a países de su nivel socioeconómico y el deseo de su estímulo por parte de los poderes políticos españoles, motivan este trabajo. Su objetivo es determinar los factores que pueden explicar la práctica de voluntariado corporativo en España. Para ello se encuesta a directivos responsables del voluntariado de sus empresas acerca de las variables determinantes del voluntariado corporativo que apuntan las investigaciones previas. Los resultados confirman que todas ellas, con diversa intensidad, influyen en la decisión de practicar voluntariado por parte de las empresas. Entre ellas destacan el hecho de que la empresa pasa a ser considerada como socialmente responsable, seguido de los efectos beneficiosos que genera en el personal de la empresa (creadores de un vínculo emocional con la empresa tal que les hace sentir orgullo de pertenencia a ella y la mejora de las relaciones de la empresa con la comunidad.

  11. Valores humanos y voluntariado: Un estudio en personas mayores

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    Antonio Ariza-Montes

    2017-02-01

    Diseño/metodología: Tras un análisis exploratorio inicial, se plantea un modelo de regresión logística para determinar en qué medida el catálogo de valores personales que posee un individuo ayuda a explicar la actividad de voluntariado entre las personas mayores. Aportaciones y resultados: Los resultados del modelo permiten afirmar que el hecho de que una persona mayor done o no tiempo a actividades de voluntariado puede ser satisfactoriamente explicado por el conjunto de valores humanos. Los resultados obtenidos revelan que los voluntarios jubilados presentan mayor sentido de la autotrascendencia y predisposición hacia el cambio, a la vez que denotan más aversión hacia la autopromoción y la conservación. Implicaciones prácticas: Para mejorar el nivel de compromiso y la motivación de los voluntarios mayores jubilados, y afrontar con firmeza los retos que amenazan al sector no lucrativo, los responsables de los recursos humanos de las entidades del tercer sector deberán buscar la coherencia entre los valores individuales y la naturaleza de la actividad que va a desempeñar el voluntario, incrementando de este modo el grado de identificación de estas personas. Valor añadido: A pesar de la abundante literatura que relaciona el voluntariado en personas mayores con el bienestar, tanto en términos de salud como de beneficios socioemocionales, y con las motivaciones de este colectivo a la hora de ejercer el voluntariado, no es frecuente hallar investigaciones que adopten como foco de análisis el perfil de los valores personales que incitan a estos individuos a colaborar con causas altruistas.

  12. ¿Voluntarios dentro del aula? El rol del voluntariado en “Comunidades de Aprendizaje”

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    Luciana Vieira Parra

    2013-01-01

    Full Text Available El presente artículo estudia la influencia del voluntariado en el aprendizaje de los alumnos y alumnas cuando es ejercido dentro del aula como apoyo a las tareas de enseñanza y aprendizaje, tema particularmente relevante una vez concluido el año del voluntariado declarado por la Comisión Europea en 2011. Durante dos cursos académicos se siguió, por procedimientos cualitativos de estudio de casos, la participación del voluntariado en una Comunidad de Aprendizaje en la provincia de Barcelona. Se utilizaron observaciones continuadas, entrevistas en profundidad, grupos de discusión comunicativos y otros procedimientos de recogida de información. Todo este proceso ha permitido constatar la positiva influencia del voluntariado en el rendimiento académico de los alumnos y alumnas y, de una manera destacada, su contribución al carácter inclusivo de la escuela y a la cohesión social del entorno en que se ubica. El artículo incluye una revisión de las investigaciones llevadas a cabo sobre el voluntariado en la escuela. Los resultados obtenidos son sometidos a discusión.

  13. Voluntariado en medicina. Proyecciones asociadas a su desarrollo

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    Augusto José Rolle

    2016-12-01

    Full Text Available Introducción: El voluntariado en Chile existe a múltiples niveles, destacando en este artículo los proyectos universitarios en que participan alumnos de medicina UC, dada su relevancia a nivel de formación extracurricular y en el proceso de adquisición de destrezas no técnicas relevantes en torno al profesionalismo médico. Esto ocurre tanto en relación con el trabajo logístico organizativo detrás de proyectos de esta índole, como en la transmisión de ideas-fuerza específicas entre quienes participan de estos como voluntarios. Sin embargo, no se conoce con detalle la participación de estudiantes en proyectos de voluntariado, ni su percepción respecto a estos. Objetivo: Este estudio busca describir la participación de alumnos de Medicina UC en proyectos de voluntariado, especialmente en relación con la Dirección de Pastoral y Cultura Cristiana UC. Método: Estudio descriptivo. Se utilizaron datos de participación en proyectos de la Dirección de Pastoral y Cultura Cristiana UC (años 2010-2013; se realizó una encuesta electrónica a estudiantes de Medicina, evaluando participación en voluntariado y otras actividades extracurriculares. Resultados: En los dos proyectos analizados en este estudio, (Misión País y Misión de vida se observa que un alto porcentaje de los alumnos que participan lo hacen en cargos de liderazgo, que fluctúa en torno al 50% en los diversos años y proyectos. La encuesta sobre actividades extracurriculares fue respondida por el 11,4% de los encuestados. Entre ellos, se observó una alta participación en actividades de voluntariado (70,1% ha participado en trabajos o misiones voluntarias durante algún verano de su formación universitaria, especialmente en relación con cargos específicos de liderazgo de proyectos. Conclusiones: Las actividades de voluntariado entre los estudiantes de Medicina constituyen una oportunidad muy relevante de formación de destrezas no técnicas, especialmente en

  14. Voluntariado en medicina. Proyecciones asociadas a su desarrollo

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    Augusto José Rolle; Francisca Lubi; Maximiliano Ramirez

    2016-01-01

    Introducción: El voluntariado en Chile existe a múltiples niveles, destacando en este artículo los proyectos universitarios en que participan alumnos de medicina UC, dada su relevancia a nivel de formación extracurricular y en el proceso de adquisición de destrezas no técnicas relevantes en torno al profesionalismo médico. Esto ocurre tanto en relación con el trabajo logístico organizativo detrás de proyectos de esta índole, como en la transmisión de ideas-fuerza específicas entre quienes par...

  15. El voluntariado y la identidad voluntaria como herramientas neoliberales: en pauta el voluntariado contra el cáncer infantil piauiense

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    Lourdes Almeida Silva

    2013-05-01

    Full Text Available El argumento desarrollado reside en que el tercer sector es una construcción político-económica del Estado para la implantación del programa neoliberal de reducción de la acción social estatal, y el voluntariado una construcción revalorada socioculturalmente, en los últimos años, en Brasil. El voluntariado, como identidad social, es una de las herramientas de legitimación de la nueva postura del Estado brasileño. Con la reducción de la acción social del Estado, hubo la disminución con lo social por parte de este y la consecuente responsabilidad de la sociedad por la gerencia de políticas sociales puntuales y focalistas. La cultura de los voluntariados promovió la construcción de las identidades voluntarias. En este proceso, los derechos sociales y la solidaridad social fueron transformados en deberes sociales y solidaridad voluntaria y local, como es el caso del voluntariado de la Red Femenina de Combate al Cáncer de Piauí (RFCC-PI, organización social que actúa en la prevención y terapéutica de cáncer. Concluimos que el tercer sector y los voluntariados, de entre ellos el de la RFCC-PI, son campo de minas, debido al Estado financiar/subsidiar inúmeras categorías del tercer sector y, así, desfavorecer las demandas sociales. Sin embargo, independientemente del contexto neoliberal brasileño, la importancia del voluntariado de la RFCC-PI está en su acción complementaria del cuidado humanizado a personas con cáncer, uniendo medicina y terapia lúdica. Los autores utilizados en este análisis son: Ana Amaral (2003; Zygmunt Bauman (2005; Elaine Behring (2003; Paula Bonfim (2010; Lúcia Costa (2006; Denys Cuche (2002; Victor Ferreira (2005; Stuart Hall (2000; Rodrigo Horochovski (2003; José Mendes (2002; Maria Luiza Mestriner (2005; Thomaz Silva (2000, Susan Sontag (1984 e Kathryn Woodward (2000. La metodología se basó en la revisión de la literatura, análisis de documentos, entrevistas y trabajo de campo.

  16. Conjunto de Ejercicios Físico con fines Terapéuticos para los pacientes obesos perteneciente al Consejo Popular Pueblo Nuevo del municipio de Consolación del Sur

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    Rainel Gómez Hernández

    2009-06-01

    Full Text Available En el presente   trabajo investigativo titulado: Conjunto de Ejercicios Físico con fines Terapéuticos para los pacientes obesos perteneciente al Consejo Popular Pueblo Nuevo del municipio de Consolación del Sur. La obesidad  constituye una de las enfermedades con  mayor  prevalecía     en los países occidentales, considerándose en la actualidad la enfermedad metabólica más frecuente. Puede considerarse un problema de salud pública, pues ocasiona una disminución de la esperanza de vida y constituye la segunda causa de mortalidad prevenible,  dado el tema surge la siguiente interrogante ¿Como contribuir al mejoramiento del Estado de Salud de los pacientes obesos perteneciente al Consejo Popular Pueblo Nuevo del municipio de Consolación del Sur? Esta investigación tiene como objetivo: Integrar  un Conjunto de Ejercicios Físicos con fines Terapéuticos para el mejoramiento del  Estado de Salud de los pacientes obesos perteneciente al Consejo Popular Pueblo Nuevo del municipio mencionado. Este trabajo propone un programa de ejercicios físicos para la disminución del peso corporal en los pacientes  que  presenta       obesidad que conviven en  el  Consejo Popular anteriormente mencionado. Para la realización del mismo se tuvo en cuenta fundamentalmente el método dialéctico–materialista de cual se derivan   los métodos teóricos y métodos empíricos, en los primeros podemos encontrar el Análisis-Síntesis, Histórico-Lógico y El Trabajo con Documentos y en los segundos la Encuesta, la Observación, para a través de los mismos recopilar datos que contribuyan  en el desarrollo satisfactorio de la investigación. La investigación es ubicada dentro de las ciencias biológicas vinculadas con el Deporte y la Cultura Física.  En la misma se resume los datos más importantes sobre ejercicios que contemplan  técnicas tradicionales  y  de  técnicas  orientales como

  17. Relación entre el aporte fiscal directo, la calidad del cuerpo docente y la producción científica de las instituciones pertenecientes al Consejo de Rectores de las universidades chilenas

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    Paulina Manríquez Maulén

    2015-03-01

    Full Text Available La búsqueda del conocimiento como uno de los principales focos que tienen las universidades se encuentra estrechamente relacionada con la calidad docente. Materializar este concepto implica establecer una relación entre la producción científica en Chile, la calidad docente y el Aporte Fiscal Directo (AFD que es destinado a las universidades pertenecientes al CRUCH, éste es el objetivo de esta investigación. Para el análisis, primero se busca determinar si existe correlación entre las variables de estudio. Posteriormente, se obtiene el índice de correlación simple entre las mismas. Los resultados muestran una correlación muy alta entre cada una de las variables. Además, se realiza este mismo procedimiento segmentando a las universidades según su ubicación, en la Región Metropolitana o en regiones y si son estatales o no, obteniendo resultados similares. De forma complementaria, se realiza un análisis con la técnica de regresión lineal simple en donde se obtiene que sólo un pequeño porcentaje de las publicaciones científicas provenientes de las instituciones pertenecientes el CRUCH estarían siendo publicadas por otro tipo de investigadores. The pursuit of knowledge as one of the main focuses of universities is closely related to quality. To materialize this concept in establishing the relationship of scienti­fic production in Chile, quality of faculty and Direct Fiscal Funding (AFD destinated to universities belonging to the CRUCH, is the aim of this research. For analysis, a scatter plot is created to intuitively determine if there is a correlation between the study variables. Subsequently, the rate of simple correlation is obtained between the same variables, which results in a very high correlation between each one of the variables. In addition, this same procedure is performed after segmenting universities by location, in the metropolitan area or other regions, and by being state-owned or not, obtaining similar results

  18. Evaluación higrotérmica y energética de un edificio escolar perteneciente al programa nacional 700 escuelas, en el área Metropolitana de San Juan, Argentina.

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    María Guillermina Re

    2016-12-01

    Full Text Available El objetivo de este trabajo es evaluar el comportamiento higrotérmico y energético anual de un edificio escolar perteneciente al Programa Nacional 700 Escuelas, en el Área Metropolitana de San Juan, Argentina. Para ello, se efectúa el cálculo estacionario aplicando las Normas IRAM y se procesan los monitoreos realizados en tres momentos claves de los años 2013 y 2014, con el edificio en condiciones reales de ocupación, los cuales se relacionan con lecturas diarias de consumo energético. Adicionalmente, se estudian los niveles de confort en tres aulas mediante el método Fanger, determinando con un software específico los índices PMV y PPD. Por último, se computan los consumos históricos eléctricos y de gas, y se calculan los valores por unidad de superficie, que se comparan con antecedentes nacionales y estándares internacionales. El análisis llevado a cabo, a partir de la consideración de datos teóricos y empíricos, permite concluir que con un consumo anual promedio de 88 kWh/m2 el edificio cumple estándares internacionales de eficiencia energética escolar, sin embargo, su desempeño térmico es deficiente en las estaciones frías y cálidas, con ambientes que escapan de la zona de confort gran parte del tiempo. 

  19. Conjunto de juegos de mesa para el funcionamiento de las Ludotecas Escolares pertenecientes al Consejo Popular ¨10 de Octubre¨ del Municipio Pinar del Río

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    Carlos Luís Maya Camejo

    2009-06-01

    Full Text Available El uso y funcionamiento de las ludo tecas es una temática que reviste una gran importancia, su principal objetivo es llevar a cabo la recreación a todos los centros estudiantiles a nivel mundial. El presente trabajo se relaciona con el fundamento de la ludoteca escolar y su uso racional.El objetivo de este trabajo es proponer un conjunto de juegos recreativos en función de la ocupación del tiempo libre de los estudiantes de las escuelas primarias pertenecientes al Consejo Popular “10 de octubre¨, del Municipio Pinar del Río ,lo cual traerá consigo el     aumento de conocimientos y habilidades y por consiguiente un desarrollo de la personalidad. Este estudio se inicio con la aplicación de una encuesta, apoyada en una guía de observación para conocer las condiciones del lugar y la ofertas de juegos que se brindaban en sus respectivos centros escolares, las que evidenciaban que eran limitadas, por lo que nos dimos a la tarea de confeccionar una propuesta de juegos de mesa, que respondieran a sus gustos y preferencias, así como a otros objetivos sociales en especifico. En el desarrollo de la investigación empleamos métodos empíricos y    teóricos, , dentro de los teóricos y los empíricos utilizamos el análisis síntesis, histórico lógico, observación, entrevista, encuesta, trabajo con documentos, y en el matemático- estadístico, estadística descriptiva e inferencial para la tabulación de resultados arrojados por los métodos utilizados, los cuales responden de forma objetiva a las necesidades, intereses, preferencias y gustos de los educandos.

  20. VOLUNTARIADO DE MAYORES: EJEMPLO DE ENVEJECIMIENTO PARTICIPATIVO Y SATISFACTORIO

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    María Silveria Agulló Tomás

    2002-01-01

    Full Text Available El objetivo general de este trabajo estriba en desarrollar el tema del voluntariado de mayores como un claro ejemplo de envejecimiento participativo y saludable. En la primera parte se definen los conceptos utilizados y se refleja el «envejecimiento activo» como expresión de una necesidad social más que sólo una tendencia en boga. La participación social de los mayores es destacada como interés prioritario tanto desde las instituciones políticas como socio-económicas. En la segunda, se ofrecen algunos datos e informaciones que ayudan a dibujar una panorámica internacional sobre la situación de los mayores como voluntarios. En la tercera se desarrollan las distintas actividades, tipología, opiniones y vivencias de voluntarios mayores en nuestro contexto español. Al final, entre otras conclusiones y propuestas, se subraya la relevancia de continuar y hacer realidad un «envejecimiento participativo», pero, eso sí, evitando el derrumbe hacia la «explotación» humana para construir una vejez más saludable y justa acorde con los principios básicos de toda sociedad democrática.

  1. O Voluntariado em questão: a subjetividade permitida

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    Adriana Cristina Ferreira Caldana

    Full Text Available Em diversos países, particularmente no Brasil, observa-se um estímulo ao voluntariado como via de democratização do Estado, com o aumento da participação de todos os atores nos graves problemas sociais. considerando as diversas expressões de atuação voluntária no mundo do trabalho, o objetivo do presente artigo é discutir o exercício dessas atividades e de suas lógicas de sustentação a partir dos principais eixos de identificação com a atividade voluntária. Estudos de casos foram realizados em duas empresas com fins lucrativos e em duas organizações não governamentais (ONGs da cidade de Ribeirão Preto (São Paulo-Brasil. Os dados indicam que o voluntariado, indiretamente, gera valor para o capital e que se deve investir na autonomia das ONGs e na superação de modelos assistencialistas, com ações particularizadas, fortalecendo os empreendimentos coletivos da economia solidária e os movimentos sociais de base. considera-se que o voluntariado seja um modo permitido de construção da subjetividade dentro da lógica do capital.

  2. Estudo das motivações para o voluntariado numa amostra de voluntários hospitalares em contexto oncológico: Relação com bem-estar psicológico e qualidade de vida

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    Sara Monteiro

    2012-07-01

    Full Text Available Objetivo: Tendo em conta o crescente número de indivíduos que se propõem a realizar actividades de voluntariado, é cada vez mais pertinente perceber quem são estas pessoas e o que as motiva. Assim, o presente estudo pretende: (1 caracterizar uma amostra de voluntários hospitalares em contexto oncológico, relativamente a variáveis sócio demográficas, variáveis específicas do voluntariado hospitalar e motivações para o voluntariado, e (2 analisar a relação entre as motivações para o voluntariado e indicadores de bem-estar psicológico e de qualidade de vida. Método: A amostra é constituída por 53 voluntários hospitalares da Liga Portuguesa Contra o Cancro – Núcleo Regional do Centro a realizarem voluntariado no Instituto Português de Oncologia Francisco Gentil de Coimbra. Os instrumentos de avaliação utilizados incluíram um questionário sócio demográfico e de caracterização do voluntariado, o Inventário de Motivações para o Voluntariado (IMV; Gonçalves, Monteiro, & Pereira, 2011, a Escala de Medida de Manifestação de Bem-Estar Psicológico (EMMBEP; Monteiro, Tavares, & Pereira, 2006 e o WHO Quality of Life-Bref (WHOQOF-BREF; Vaz Serra et al., 2006. Resultados: De entre os resultados obtidos destaca-se que as funções motivacionais mais valorizadas são as funções “valores”, “experiência” e “crescimento/auto-estima”. Adicionalmente, salienta-se a existência de uma associação positiva entre as funções “valores”, “experiência” e “crescimento/auto-estima” e subescalas de bem-estar psicológico e bem-estar total; e uma associação negativa entre a função “protectora” e os domínios psicológicos e ambiente da qualidade de vida. Conclusão: As interpretações dos resultados bem como as suas implicações são discutidas à luz de literatura relevante.

  3. PERCEPCIONES DOCENTES EN CONTEXTOS DE COLABORACIÓN DEL VOLUNTARIADO. DOS MODELOS PARA ENTENDER LA AYUDA EN LA ESCUELA

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    Cristián Venegas Traverso

    2009-01-01

    Full Text Available El siguiente trabajo muestra dicotómicamente dos modelos de percepción del profesorado respecto a los agentes que le proporcionan colaboración a su tarea de aula como voluntarios. Se analizan ambos modelos desde el paradigma Comunicativo Critico. Por un lado, la percepción estratégica de la voluntariedad corresponde al resultado de una formación individualista y de una sociedad permeable al ideario neoliberal, caracterizado por un docente que desconfía de la "sinceridad" de la ayuda, incluyéndose en un Dimensión exclusora. En contraparte, la percepción solidaria de la voluntariedad expresa una resistencia y una salida al escepticismo de la ayuda y a la desconfi anza entre profesor y voluntariado, además de expresar una posibilidad de esperanza y transformación, incluyéndose en una Dimensión transformadora.

  4. Humanização e voluntariado: estudo qualitativo em hospitais públicos Humanización y voluntariado: estudio cualitativo en hospitales públicos Humanization and volunteering: a qualitative study in public hospitals

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    Maria Cezira Fantini Nogueira-Martins

    2010-10-01

    Full Text Available OBJETIVO: Analisar o perfil de voluntários e seu processo de trabalho em humanização hospitalar. PROCEDIMENTOS METODOLÓGICOS: Foram utilizados como instrumentos questionário sociodemográfico e entrevista semi-estruturada, aplicados a 26 coordenadores de voluntariado e 26 voluntários, pertencentes a 25 hospitais da Região Metropolitana de São Paulo, entre 2008 e 2009. As entrevistas foram analisadas segundo os princípios da análise temática. ANÁLISE DOS RESULTADOS: Cinco temas principais foram formulados: perfil do voluntário (idade, sexo, faixa de renda; organização do trabalho voluntário (termo de compromisso, treinamento; relações voluntariado-hospital (relacionamento com a direção do hospital e com os funcionários; motivação (solidariedade, experiência anterior com doenças próprias ou de familiares, realização pessoal, resolução de conflitos e beneficiários (individual, dual, coletivo; humanização e atividades dos voluntários (cuidados ao paciente, apoio logístico, apoio emocional, desenvolvimento de habilidades dos pacientes, recreação, organização de eventos comemorativos. CONCLUSÕES: Na atividade desenvolvida pelos voluntários há aspectos positivos (como a contribuição para a humanização hospitalar, bem como problemáticos (como a realização de atividades que são atribuições de funcionários. É necessária atenção à normatização das atividades voluntárias, especialmente no cuidado com os pacientes, bem como às ações de valorização do voluntariado nos hospitais e integração dos voluntários com os grupos de trabalho de humanização.OBJETIVO: Analizar el perfil de voluntarios y su proceso de trabajo en humanización hospitalaria. PROCEDIMIENTOS METODOLÓGICOS: Se utilizaron como instrumentos: cuestionario sociodemográfico y entrevista semi-estructurada, aplicados a 26 coordinadores de voluntariado y 26 voluntarios, pertenecientes a 25 hospitales de la Región Metropolitana

  5. La motivación en los voluntarios: Una aplicación del inventario de funciones al caso Colombia

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    Giovanni Pérez Ortega

    2012-01-01

    Full Text Available Este artículo, basado en “El inventario de funciones del Voluntariado –IFV-”, determina cuáles son las variables que motivan a los voluntarios en Colombia, a desarrollar las actividades relacionadas con el voluntariado. Se consideraron seis dimensiones (valores, carrera, social, comprensión, protección y mejora. El análisis de los resultados muestra que los voluntarios en Colombia se motivan principalmente porque pueden trabajar por una causa que es importante para ellos y porque pueden ayudar a los menos afortunados; variables pertenecientes a la dimensión de valores.

  6. Comparación cariotípica de cinco especies de Lutzmoyia (Diptera: Culícidae, pertenecientes al grupo verrucarum y a la serie Townsendi, de Colombia

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    J. Escovar

    2001-07-01

    Full Text Available Identificar las características citogenéticas de cinco especies nativas de Lutzomyia, correspondientes al grupo Verrucarum y a la serie Townsendi, para efectos de una clara tipificación citotaxonómica de los insectos seleccionados.

  7. UNA MIRADA A LAS TENDENCIAS Y LOS RETOS DEL VOLUNTARIADO PROCEDER

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    Andrea Rivera Duque

    2016-12-01

    Full Text Available Hoy día, las personas buscan aprovechar su tiempo libre en actividades solidarias. Una de las opcionespor las que más a menudo se inclinan son los voluntariados, tal como se señala en el Informe sobre el estado del voluntariado en el mundo para 2011, de las Naciones Unidas. La poca información concreta y disponible, así como la escasez de referentes acerca del voluntariado tanto a escala nacional como desde el ámbito universitario, es el aspecto más notorio a la hora de hacer un análisis de la realidad de este tipo de movimientos. Pese a ello, algunas fuentes rigurosas y actualizadas nos permiten aproximarnos a esta realidad e identificar algunos de los retos y las tendencias que deben plantearse en dicho ámbito para su futuro. El objetivo de la presente revisión bibliográfica es conocer el estado actual de la realidad de los voluntariados universitarios tomando en cuenta los ámbitos de carácter internacional y nacional, para, con ello, orientar mejor la experiencia extracurricular que se ha hecho con el voluntariado Proceder , del Programa Ciencias del Deporte y la Recreación de la Universidad Tecnológica de Pereira.

  8. Propuesta de un conjunto de actividades Físico-Recreativas para la ocupación del tiempo libre de los adolescentes de la Circunscripción # 135, de la Comunidad perteneciente al Consejo Popular “Puerta de Golpe

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    Raciel Sánchez Echevarria

    2009-06-01

    Full Text Available En  el  presente trabajo  investigativo  titulado:  Propuesta  de  un  conjunto  de actividades Físico-Recreativas para la ocupación del tiempo libre de los adolescentes de la Circunscripción # 135, de la Comunidad perteneciente al Consejo Popular “Puerta de Golpe.” Como Tiempo Libre se conoce al espacio restante después de concluir la realización de actividades docentes, laborales, domésticas, fisiológicas y de transportación, en el que se realizan actividades de libre  elección   a  voluntad  de  los  propios  implicados.  En  nuestro  país  las investigaciones sobre el Tiempo Libre surgen  como una necesidad indispensable a consecuencia del proceso de desarrollo económico y social a partir del Triunfo Revolucionario y la consolidación alcanzada en estos años por las relaciones socialistas de producción. Estas transformaciones se manifiestan en todos los aspectos del modo de vida y provocan cambios sustanciales en los hábitos, en la cultura y la ideología de las masas y por tanto en las necesidades espirituales y materiales de las mismas. Esta investigación tiene  como objetivo: Proponer un conjunto  de  actividades  físico-recreativas  en  función  de  lograr  una  mejor ocupación  del  tiempo  libre de  los  adolescentes de  12-  15  años  de  la Circunscripción # 135, de la Comunidad perteneciente al Consejo Popular ¨Puerta de Golpe¨. del municipio antes mencionado. Para la realización del mismo se tuvo en cuenta el método dialéctico–materialista de cual se derivan los métodos teóricos y métodos empíricos, en los primeros podemos encontrar el Análisis- Síntesis, Histórico-Lógico y El Trabajo con Documentos y en los segundos la Encuesta, la Observación, para a través de los mismos recopilar datos que contribuyan  en el desarrollo satisfactorio de la investigación. La investigación es ubicada dentro de la Recreación vinculada con el Deporte y

  9. O voluntariado, a solidariedade e as políticas sociais

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    Fagundes, Helenara Silveira

    2006-01-01

    Full Text Available Este artigo procura fazer uma reflexão sobre o caráter dado, nos dias de hoje, ao tema voluntariado e solidariedade em relação às políticas sociais, bem como sobre o Estado e a sociedade civil. Verifica-se que há uma responsabilização de diversos setores da sociedade civil, sobretudo uma convocação à maior participação das pessoas no combate à miséria e à desigualdade social. Assim, a perda de direitos é o desafio que deve ser superado por aqueles que planejam e executam as políticas sociais. É necessário que algumas políticas sociais sejam pensadas e executadas para além da esfera das redes informais existentes na sociedade. O conceito moral da solidariedade e o do direito em relação às políticas sociais são dois conceitos que na atualidade se entrelaçam; em alguns momentos são contraditórios, mas a humanidade não pode renunciar a eles. Esta talvez seja uma das utopias que se deve perseguir, tendo a consciência de que não se pode esperar justiça social somente do Estado e tampouco somente da sociedade civil. É necessário que estas duas esferas construam este desafio utópico, que seja afirmativo da vida e transcenda a discussão a respeito do bem e do mal e, sobretudo, que possam propiciar o desenvolvimento do exercício da cidadania.

  10. Motivos, personalidad y bienestar subjetivo en el voluntariado

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    Marcial E. Cabrera-Darias

    2015-10-01

    Full Text Available El principal objetivo de este estudio fue analizar las relaciones entre las motivaciones del individuo para participar en actividades de voluntariado, los rasgos de personalidad y el bienestar subjetivo. Participaron 153 adultos, de edades entre los 17 y 65 años, que cumplimentaron las distintas medidas tanto on-line como en papel y lápiz. Los resultados mostraron que las motivaciones previas diferían entre los dos grupos de voluntarios. Los análisis correlacionales indicaron que algunos motivos como petición de la organización, circunstancias personales o experiencias vividas se asociaban a satisfacción vital y a emociones negativas en los voluntarios on-line, mientras que hacer algo útil o sentimientos de paz eran los motivos asociados a estos indicadores de bienestar para los voluntarios de la prueba en papel. Los rasgos de personalidad, principalmente el neuroticismo, mostraron relaciones más consistentes con el bienestar que las motivaciones en ambos grupos de voluntarios. Los análisis de regresión indicaron que las facetas de extraversión, como el gregarismo, la calidez o la actividad, fueron los predictores más potentes del bienestar de los voluntarios que hicieron las pruebas en papel; mientras que la disciplina, faceta de la responsabilidad, y la estabilidad emocional predecían el bienestar de los voluntarios on-line. Estos hallazgos sugieren que existen distintos perfiles de voluntarios que podrían estar determinando su participación en diversas actividades o colectivos. Además, las características personales parecen tener un mayor efecto en el bienestar que las motivaciones.

  11. Volunteers and Ex-Volunteers: Paths to Civic Engagement Through Volunteerism Voluntarios y Ex Voluntarios: Perfiles de Participación Ciudadana a Través del Voluntariado

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    Elena Marta

    2010-11-01

    Full Text Available The study described is part of a broader longitudinal and multi-methodological research project aimed at investigating volunteerism in young people, in order to understand the reasons for the initial choice to volunteer but, more specifically, the reasons to sustain or quit voluntary involvement, as well as the effects of volunteerism. Eighteen volunteers and 18 ex-volunteers, 50% male and 50% female, aged between 22 and 29 years old, from 2 regions in northern Italy (Lombardy and Emilia Romagna participated in in-depth interviews. The paper-and-pencil analysis of the interview pointed to the emergence of several core categories: motivations to volunteer, relations within the organization, influence of family, and effects of volunteerism, especially as related to the process of identity and citizenship construction. On the basis of these categories, 4 typologies were identified: 2 with respect to volunteers (producers of active citizenship and volunteers for personal necessity and 2 related specifically to ex-volunteers (ex-volunteers witnesses for solidarity and active citizenship and ex-volunteers by chance.El estudio descrito es parte de un proyecto de investigación longitudinal y multi-metodológico más amplio sobre el voluntariado juvenil, realizado con el propósito de entender las razones que tuvieron los jóvenes para elegir el voluntariado y, específicamente, las razones para mantener o abandonar el compromiso, así como los efectos de dicho voluntariado. Participaron en entrevistas en profundidad 18 voluntarios y 18 ex-voluntarios, 50% hombres y 50% mujeres, entre 22 y 29 años de edad, de 2 regiones del norte de Italia (Lombardía y Emilia Romagna. El análisis de la entrevista de lápiz y papel permitió trazar varias categorías centrales: las motivaciones al voluntariado, las relaciones dentro de la organización, la influencia de la familia y los efectos del propio voluntariado, especialmente en relación con el proceso de

  12. Diferencias en el test proyectivo HTP entre universitarios pertenecientes a hogares completos e incompletos

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    Carlos Ramos; Andrés Subía; Victor Carvajal; Daniela Gutierrez

    2017-01-01

    El test proyectivo gráfico HTP es un reactivo de amplio uso en la evaluación psicológica. Éste consiste en solicitar al participante que dibuje una casa, un árbol y una persona. Esta prueba tiene el supuesto teórico de que el ser humano proyecta en sus dibujos aspectos inconscientes y rasgos de su personalidad. En tal contexto, en esta investigación nos interesó analizar las diferencias que existen en la proyección de los dibujos realizados por estudiantes universitarios, pertenecientes a dos...

  13. Imaginario Social de la Colaboración: Voluntariado y Solidaridad

    OpenAIRE

    María José Torrejón; Cynthia Meersohn; Anahí Urquiza

    2005-01-01

    Los alcances de la colaboración, aunque no es un concepto altamente tematizado en el mundo moderno, subyacen a nuestras prácticas y discursos. Esta ponencia muestra las formas que asume la colaboración social en la comunicación cotidiana, basándonos en los discursos de aquellos que ejercen voluntariado (colaboración en su forma más visible y práctica).

  14. Lineamientos para la intervención del Programa de Voluntariado Rosarista para la Gestión Social Instituto Rosarista para la Acción Social “Rafael Arenas Ángel” - SERES

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    Cruz Daza, Edwin Gerardo

    2017-01-01

    Frente a la importante labor para la Gestión Social de la Universidad del Rosario, surgió la necesidad de realizar un acercamiento analítico al Programa de Voluntariado con el fin de identificar sus actores, los procesos de intervención, la organización interna, las dificultades en la ejecución, y a partir de los resultados obtenidos plantear unos lineamientos que permitan mejorar los procesos de intervención que se propuso la Universidad con la creación de dicho Programa. Se encontró entre m...

  15. Exploración de un modelo estadístico de voluntariado estudiantil en mexicanos

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    Francisco Augusto Laca Arocena

    2013-01-01

    Full Text Available A raíz de la actual crisis económica, se asiste a un renovado interés por el voluntariado debido a que tiene repercusiones sociales y culturales de largo alcance. Se optó por desplazar la pregunta de las necesidades sociales objetivas a la evaluación subjetiva que las personas hacen de la calidad de sus sociedades, y toma como criterio para esta medición el constructo bienestar social de Keyes (1998. Mediante un modelo estadístico multivariado (análisis de trayectorias o path analysis, se explora la relación entre variables como altruismo, empatía y bienestar social, las cuales están relacionadas en el comportamiento voluntario estudiantil. Los resultados indican que el bienestar social predice el voluntariado mediando la relación, la empatía y sobre todo el altruismo. Se señalan las limitaciones e implicaciones de la investigación. Palabras clave: bienestar social, empatía, altruismo, voluntariado, México.

  16. Exploración de un modelo estadístico de voluntariado estudiantil en mexicanos

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    Francisco Augusto Laca Arocena; Emmanuel de Jesús Espinosa Rodríguez; Edwin George Mayoral Sánchez

    2013-01-01

    A raíz de la actual crisis económica, se asiste a un renovado interés por el voluntariado debido a que tiene repercusiones sociales y culturales de largo alcance. Se optó por desplazar la pregunta de las necesidades sociales objetivas a la evaluación subjetiva que las personas hacen de la calidad de sus sociedades, y toma como criterio para esta medición el constructo bienestar social de Keyes (1998). Mediante un modelo estadístico multivariado (análisis de trayectorias o path analysis), se e...

  17. Motivos del Voluntariado: Categorización de las Motivaciones de los Voluntarios Mediante Pregunta Abierta

    OpenAIRE

    Chacón, Fernando; Pérez, Tania; Flores, Jèrôme; Vecina, María Luisa

    2010-01-01

    La mayoría de los estudios sobre motivaciones del voluntariado utilizan cuestionarios estandarizados siendo el Volunteer Funcion Inventory (VFI) el más utilizado. En muy pocas ocasiones se pregunta de forma abierta a los voluntarios por los motivos que les llevan a serlo. En este trabajo hipotetizamos que los cuestionarios tiende a sobreestimar el número de motivaciones y a infraestimar la variedad de las mismas, por lo que se analizan las respuestas cualitativas de 1515 voluntarios a una pre...

  18. Los hábitos de movilidad gracias al emplazamiento del Sistema de Metro en el Municipio de Alcorcón. El caso de la construcción del Metrosur perteneciente al tramo I estaciones: Puerta del Sur, Parque Lisboa, Alcorcón Central y Parque Oeste

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    Flor María Fariñas Embos

    2013-04-01

    Full Text Available ResumenUno de los principales debates de este inicio de siglo es cómo alcanzar el equilibrio entre el desarrollo urbanístico, las necesidades ciudadanas de movilidad y comunicación cómoda y rápida, y el mantenimiento del respeto al medio ambiente. El objetivo principal es profundizar en la esencia del tema a partir de las encuestas realizadas por el Consorcio de Transportes de la Comunidad de Madrid en el año 2004 y que permiten dar continuidad con el propósito de encontrar soluciones a los propios problemas, el papel crucial que las redes de transporte de personas adquieren en la estructura de la ciudad, especialmente cuando se alcanza una dimensión de tipo metropolitana.Palabras claveAlcorcón, Transporte, Metrosur, Desarrollo UrbanoAbstract One of the main debates beginning of this century is how to achieve a balance between urban development, citizens' needs for mobility and communication convenient and fast, and maintaining respect for the environment. The main objective is to deepen the essence of the subject from the surveys conducted by the Transport Consortium of the Community of Madrid in 2004 and ensuring continuity in order to find solutions to their own problems, the crucial role transport networks of people acquire in the structure of the city, especially when it reaches a metropolitan type dimension.KeywordsAlcorcón, Transport, Metrosur, Urban Development.

  19. BIENESTAR PSICOLOGICO: ADULTOS MAYORES, ACTIVOS A TRAVES DEL VOLUNTARIADO

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    FERRADA MUNDACA; LESLIE ISABEL; FERRADA MUNDACA; LESLIE ISABEL

    2011-01-01

    El propósito del presente estudio fue establecer el grado de bienestar psicológico en adultos mayores voluntarios del programa "Asesores Seniors" de Senama Región Bio Bio y no voluntarios, usuarios del CESF AM San Pedro de la comuna de San Pedro de la Paz. Corresponde a un estudio cuantitativo, de tipo descriptivo, correlacional y comparativo. La muestra estuvo constituida por 60 adultos mayores, donde 30 de ellos corresponde al grupo de voluntarios y los otros 30 al grupo...

  20. Diferencias en el test proyectivo HTP entre universitarios pertenecientes a hogares completos e incompletos

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    Carlos Ramos

    2017-06-01

    Full Text Available El test proyectivo gráfico HTP es un reactivo de amplio uso en la evaluación psicológica. Éste consiste en solicitar al participante que dibuje una casa, un árbol y una persona. Esta prueba tiene el supuesto teórico de que el ser humano proyecta en sus dibujos aspectos inconscientes y rasgos de su personalidad. En tal contexto, en esta investigación nos interesó analizar las diferencias que existen en la proyección de los dibujos realizados por estudiantes universitarios, pertenecientes a dos tipos de condiciones: (a familias con padres separados y (b familias con padres unidos. La metodología de la investigación que seguimos consistió en un diseño cuantitativo de alcance descriptivo y temporalidad transeccional. Como resultados encontramos que los participantes pertenecientes al grupo de padres separados presentan mayor tiempo de latencia y tiempo total en la realización del test, mayor rasgo de oposicionismo, timidez y dificultad para establecer contacto con otras personas. En los participantes de padres unidos se encontró mayor nivel de sentimientos de culpabilidad por actividades de tipo manipulativas y dificultades en la identificación con su propio género. Se encontró igualdad entre los grupos en cuanto a rasgos de dependencia y la sensación de imposibilidad de sentirse cómodo con aquellos con quienes se comparte el núcleo familiar. Como conclusión, se observa que cada grupo posee características psicológicas que estarían relacionadas con la condición de la relación de sus padres. Como investigación futura nos proyectamos a la realización de un análisis cualitativo del discurso de los participantes para identificar los significados que construyen en torno a la relación de sus progenitores.

  1. Ética e voluntariado no serviço social

    OpenAIRE

    Alves, Luciano

    2010-01-01

    A presente dissertação de mestrado trata de aspectos da ética relacionados à reprodução de valores de cunho e origem religiosos na atuação voluntária do assistente social. Ancora-se na tradição marxista do arcabouço teórico do Serviço Social brasileiro no que compete ao desenvolvimento do Projeto Ético-Político Profissional. Apresenta as conexões existentes entre o âmbito teórico da profissão e os pressupostos sócio-históricos do voluntariado contemporâneo, buscando racional...

  2. Evidências de validade de uma versão brasileira do Inventário de Funções do Voluntariado - IFV Evidence of validity of a Brazilian version of the Volunteer Functions Inventory - VFI

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    Ronaldo Pilati

    2011-12-01

    Full Text Available Entender os motivos que levam o indivíduo a iniciar e manter-se no voluntariado pode contribuir para o recrutamento de novos voluntários e para a retenção no serviço de pessoas já engajadas, pois permite aproximar os objetivos individuais de potenciais voluntários das exigências e benefícios associados às oportunidades concretas de ajuda que o ambiente proporciona. O presente trabalho teve como objetivos adaptar e validar para o Brasil o Inventário de Funções do Voluntariado (IFV e correlacionar o IFV com a versão reduzida do Questionário de Perfis de Valores (QPV21. Além de corroborar a validade convergente entre estes dois instrumentos, os resultados indicaram que as motivações dos 319 participantes agregaram-se em torno de quatro fatores (valores e entendimento, proteção, carreira e engrandecimento social, replicando parcialmente a estrutura fatorial do instrumento original e confirmando a existência de diferenças culturais nas motivações para o voluntariado. Outras implicações teóricas e empíricas são discutidas.Understanding the reasons why people begin and continue to volunteer can contribute to the recruitment of new volunteers and to the retention of those that already engaged, by bringing the individual goals of potential volunteers closer to the requirements and benefits associated with the existing work opportunities. This study aims to adapt and validate the Volunteers Function Inventory (VFI for Brazil as well as to correlate the VFI with the reduced version of Schwartz's Portrait Value Questionnaire (PVQ21. Results confirmed the convergent validity between these two instruments. In addition, the factor structure of the original instrument was partially replicated, with the motivations of the 319 participants grouping around four factors (values and understanding, protection, career, and social enhancement. These results suggest the existence of cultural differences in the motivations for volunteering

  3. Creencias en fumadores pertenecientes a un programa de salud cardiovascular

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    Renata Virginia González Consuegra

    Full Text Available La presente investigación identifica las creencias de consumidores de tabaco, usuarios de un programa de promoción de la salud cardiovascular en la ciudad de Bogota-Colombia, mediante abordaje cuanti-cualitativa. A partir, de entrevista a profundidad grabada por 15 personas del grupo de promoción de la salud cardiovascular, quienes voluntariamente constituyeron la muestra hasta lograr la saturación de la temática en cuestión. Los datos fueron analizados y posibilitaron una descripción holistica de la interpretación frente a al cultura y al habito de consumir tabaco. Se obtuvo información que se consideró lográndose con ello una descripción amplia de motivaciones y factores desalentadores para la cesación del habito del tabaquismo.

  4. Creencias en fumadores pertenecientes a un programa de salud cardiovascular

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    González Consuegra Renata Virginia

    2004-01-01

    Full Text Available La presente investigación identifica las creencias de consumidores de tabaco, usuarios de un programa de promoción de la salud cardiovascular en la ciudad de Bogota-Colombia, mediante abordaje cuanti-cualitativa. A partir, de entrevista a profundidad grabada por 15 personas del grupo de promoción de la salud cardiovascular, quienes voluntariamente constituyeron la muestra hasta lograr la saturación de la temática en cuestión. Los datos fueron analizados y posibilitaron una descripción holistica de la interpretación frente a al cultura y al habito de consumir tabaco. Se obtuvo información que se consideró lográndose con ello una descripción amplia de motivaciones y factores desalentadores para la cesación del habito del tabaquismo.

  5. Estudio y diseño de un sistema micro hidroeléctrico para generación y abastecimiento de energía eléctrica mediante energía renovable para una vivienda típica del sector de Sinincay perteneciente al Cantón Cuenca

    OpenAIRE

    Vásquez Huiracocha, Vinicio Rolando

    2015-01-01

    Para solucionar la falta de energía eléctrica para una vivienda que por su ubicación está distante de la red de distribución pero posee condiciones favorables para generar energía limpia y renovable con los beneficios económicos, ambientales, sociales y demás implícitos, favorecen para estudiar y construir una microcentral hidroeléctrica de agua fluyente a través de una turbina Pelton acoplada al generador de 2000 Vatios en frecuencia y voltaje nominales. Tras conexiones, protecciones y medic...

  6. GESTÃO DO VOLUNTARIADO: Um Panorama dos Estudos Realizados no Brasil.

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    Sheila Patrícia Ramos

    2016-08-01

    Full Text Available Um novo padrão de voluntariado iniciou a partir de 1990 no Brasil, foram criados centros de referência que tinham por objetivo organizar, capacitar e direcionar o trabalho voluntário. A presente pesquisa tem como objetivo analisar os estudos publicados no Brasil sobre o tema gestão do voluntariado e com isso pretende-se mapear estudos teóricos e empíricos nacionais. Para tanto, foi realizada uma pesquisa bibliométrica, de caráter exploratório-descritiva, em dados secundários. Os resultados foram dispostos em forma de tabela. A amostra foi composta por quinze estudos, sendo artigos científicos publicados em revistas e eventos. A média de autores identificados nos artigos foram de 2,4. Predominam as pesquisas práticas e qualitativas com uso da técnica de entrevista apoiado pelo uso de documentos e/ou observação.  80% das pesquisas são qualitativas e 20% de natureza quali/quanti. 80% dos estudos identificados são práticos, 60% foram publicados em fontes classificadas pela CAPES como “B” e 40% “A”.    A new voluntary standard started from 1990 in Brazil, the reference centers have been created that aimed to organize, train and direct volunteer work. This research aims to analyze the studies published in Brazil the problem of volunteer management and aims to map theoretical and empirical national. For this, a bibliometric, descriptive and exploratory research was conducted on secondary data. The results were arranged in a table. The sample consisted of fifteen scientific studies and articles published in magazines and events. The average number of authors identified in Articles 2.4. Predominance of practice and qualitative research using the interview technique with the support of the use of documents and / or observation. 80% of research is qualitative and 20% qualitative / quantitative nature. 80% of the identified studies are practical, 60% were published in classified by CAPES as "B" and 40% "A" sources.

  7. La dimensión corporativa del tercer sector. Los tipos organizativos del voluntariado

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    Zurdo Alaguero, Ángel

    2007-08-01

    Full Text Available The present article analyses the principal forms of organization that are linked to the participative practice of the voluntary sector, paying especial attention to the “hetero-aid” and the “mutualism”. Likewise, it analyses in depth the conflict between formal and substantive rationality that exists in the voluntary organizations. The present study also emphasizes the progressive prevalence of the formal rationality, especially in the organization dynamics linked to the management. Finally, this analysis proposes the existence of another critical problem for the voluntary organizations, the displacement of objectives.

    El artículo aborda la caracterización de los principales tipos organizativos ligados a la práctica participativa del voluntariado, fundamentalmente la “heteroayuda”, pero también el mutualismo. Asimismo, se profundiza en el análisis del “conflicto” existente entre racionalidad formal y sustantiva en el seno de las organizaciones voluntarias, apuntándose, además, el progresivo dominio de la racionalidad formal —especialmente en las dinámicas organizativas vinculadas a la gestión. También se delimita otro problema especialmente crítico para las organizaciones voluntarias, a saber, el desplazamiento de objetivos

  8. La actividad física como tratamiento para las personas adultas obesas en edades comprendidas entre 50 y 55 años del Consultorio Médico No. 10 de la zona 45 pertenecientes al Consejo Popular No. 1 del municipio Guane

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    Eduardo Isaac Crespo Gutiérrez

    2009-06-01

    Full Text Available Con el objetivo, de proponer un grupo de recomendaciones educativas y acciones basadas en actividades físicas encaminadas a que las personas adultas obesas en edades comprendidas entre 50 y 55 años, del consultorio # 10 del municipio Guane, tengan un control sobre su peso corporal, las que como elementos fundamentales después de un diagnostico poseen un índice de masa corporal (peso esperado para talla por encima de 30kg/m², y el conocimiento sobre la practica de ejercicios físicos era casi nulo, así como también sobre la  noción en lo relativo en  normas y patrones de conducta alimentarias  son incorrectos. Se tomo como unidad de análisis  36 personas obesas de ambos sexos y como muestra de estas 15 .Utilizando métodos teóricos  y métodos empíricos, al comparar la fase inicial y la evolutiva respecto a las variaciones de su IMC estudiados se han encontraron cambios significativos en los mismos, así se espera concluir  que la combinación de tratamientos no farmacológico basados en el ejercicio  en  combinación  conjunta  en  la  educación  de  sus  patrones  alimentarios produce cambios significativos en el peso corporal, además de crear las condiciones necesarias  para  influir  en  la  formación  de  estilos  de  vida  sanos,  y  lograr  que  la población se incorpore a las transformaciones del medio social que los rodea y, de esta forma, se modifican ellos mismos, e incorporan valores y conductas de vida mucho más sanas que harán posible los cambios futuros que se esperan en el país dentro del campo de la salud . Teniendo en cuenta que el abordaje terapéutico de la obesidad, por su naturaleza multifactorial, debe ser objeto de múltiples sectores o miembros de la sociedad y la comunidad. Y en  correspondencia con la realidad toda la comunidad una sus esfuerzos con vistas evitar el incremento progresivo de esta enfermedad.

  9. Minga en Xuxuy: La oportunidad de socializar el conocimiento a través del voluntariado universitario

    OpenAIRE

    Ocampo, Susana Blanca; Quintana, Sonia B.; Benavidez, Ariel C. R.

    2007-01-01

    Con el propósito de lograr que cada familia de niños y jóvenes se apropie responsablemente del conocimiento acerca de cómo crecen sus niños y adolescentes, se puso en marcha el proyecto de voluntariado universitario Minga en Xuxuy: trabajo conjunto por niños y adolescentes. Se implementaron talleres participativos destinados a madres, padres y tutores de tres grupos poblacionales seleccionados (dos de San Salvador de Jujuy y uno de Abra Pampa), tendientes a la apropiación de la técnica de med...

  10. Prevalencia de lesiones en gimnastas pertenecientes a la Liga de Gimnasia de Bogotá, D.C.

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    Diego Fabricio Rodríguez-Camacho

    2016-09-01

    Full Text Available Introducción. La exigencia física en los gimnastas durante su formación puede traer consigo lesiones; la intensidad y cantidad de práctica en relación al nivel de competencia y grado de dificultad de los elementos hacen de este deporte uno de los que mayores lesiones produce. Objetivo. Estimar la prevalencia de lesiones y los factores correlacionados a estas en gimnastas pertenecientes a la Liga de Gimnasia de Bogotá, Colombia. Materiales y métodos. Estudio observacional, correlacional y con diseño transversal realizado en 19 gimnastas: nueve mayores de 14 años, nueve entre 15 y 19 y uno de 22 años. Se midió índice de masa corporal (IMC, peso corporal, talla, squat jump, contra movimiento, pliometría en miembros superiores, dinamometría de espalda y sit and reach; también se realizó una encuesta de prevalencia de lesiones. Resultados. 14 deportistas presentaron lesiones el último año. El lugar de lesión más prevalente fue codo con 24%, seguido de pie con 21%. El tipo de lesión más prevalente fue esguince con 31.6%, seguido por tendinopatía con 21%. No hubo correlación entre squat jump, contra movimiento, pliometría en miembros superiores, dinamometría de espalda y sit and reach. Conclusiones. Las variables edad, peso, IMC y duración del entrenamiento se correlacionan con la aparición de lesiones. Las mujeres sufren más lesiones en comparación con hombres.

  11. Minga en Xuxuy: La oportunidad de socializar el conocimiento a través del voluntariado universitario

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    Ocampo, Susana Blanca

    2007-01-01

    Full Text Available Con el propósito de lograr que cada familia de niños y jóvenes se apropie responsablemente del conocimiento acerca de cómo crecen sus niños y adolescentes, se puso en marcha el proyecto de voluntariado universitario Minga en Xuxuy: trabajo conjunto por niños y adolescentes. Se implementaron talleres participativos destinados a madres, padres y tutores de tres grupos poblacionales seleccionados (dos de San Salvador de Jujuy y uno de Abra Pampa, tendientes a la apropiación de la técnica de medición pondoestatural así como su evaluación respecto de las referencias (nacional e internacional, tanto por percentiles como por estandarización. Si bien la respuesta a las convocatorias fueron escasas, quienes asistieron mostraron participación altísima, lográndose la concientización acerca del rol como primeros agentes de monitoreo y control del estado nutricional de niños y adolescentes.

  12. Evaluación medicosocial de los ancianos de dos consultorios pertenecientes al Policlínico "California"

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    Regla Ledia González Sánchez

    1998-06-01

    Full Text Available Se realizó la evaluación medicosocial de los ancianos de los Consultorios 29.1 y 29.2 del Policlínico "California", municipio San Miguel del Padrón, en 1996. Se aplicó una encuesta en todos los pacientes a los familiares, si el estado mental del anciano no lo permitía. Se encontró una mayor prevalencia del estado mental normal y el requerimiento de atención médica periódica frecuente, y fueron capaces de conocer sus medicamentos y tomarlos sin ayuda, los encuestados, en su mayoría, eran capaces de realizar actividades dentro y fuera de la casa, se encontraban parcialmente integrados a la comunidad, cubrían sus necesidades básicas y la mayoría convivía con familiaresThe medicosocial evaluation of the elderly from the family physician’s offices 29.1 and 29.2 of the "California" Polyclinic, municipality of San Miguel del Padrón, was made in 1996. All the patients or their relatives were surveyed when the mental health of the former was not good. A higher prevalence of the normal mental status was found. The requirement of periodical medical attention was frequent. Most of the patients lived with their relatives, were partially integrated to community, and were able to take their medicines without any help, to carry out activities inside and outside the house, and to meet their basic needs

  13. La práctica del voluntariado: experiencias en contextos de precariedad The practice of volunteering: experiences in precarious contexts

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    Paulina Piccini

    2009-12-01

    Full Text Available Se presentan lineamientos generales, teóricos y metodológicos, y primeros resultados de una investigación que se ejecuta en un asentamiento situado en la zona sur de la Ciudad de Buenos Aires. Los protagonistas son un grupo de voluntarios/as, los habitantes del barrio y un grupo de psicólogos/as sociales recientemente incorporados a la relación entre ellos. Los objetivos generales son explorar las prácticas que despliegan los agentes e identificar el tipo de relación ya establecida entre los miembros del voluntariado y la comunidad. El método y las principales técnicas (entrevistas individuales y grupales y observación participante son cualitativos. Esta primera aproximación está centrada en el grupo voluntario en función de la elaboración de algunos resultados y, desde el punto de vista teórico, atendiendo sus distintas dimensiones, contextualizándolo e interrogando su definición.The general outline is presented , with its theoretical and methodological basis, as well as the first results of a Scolarship Plan for Master´s degree , " A pycho-social approach of the relationship among different actors in precarious contexts". The research is carried out in a settlement located in the south area of Buenos Aires City. The protagonists are a group of volunteers, the neighbourhood inhabitants and a group of social psychologists, recently incorporated . The general aims are to explore the practices performed by the agents and to identify the type of relation already established between the volunteering members and the community. The methodology and the main techniques (individual and collective interviews and active observation are cualitative. This first approach focuses on the group of volunteers in order to elaborate some results and, from the theoretical point of view, paying especial attention to its different dimensions, giving it a context and asking about its definition.

  14. La formalización del voluntariado juvenil en Nicaragua en el contexto de América Latina y el Caribe

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    René Olate

    2009-12-01

    Full Text Available EL ARTÍCULO SE BASA EN UNA INVESTIGACIÓN QUE UTILIZA LA TEORÍA de los orígenes sociales de la sociedad civil (Salamon & Anheier, 1998 y el concepto de formalización para analizar los programas de voluntariado juvenil en Nicaragua. Describe el nivel de formalización de los mismos y lo compara con el de otros países de la subregióny de América Latina y el Caribe. También analiza la relación existente entre la formalización y orientación de estos programas y un conjunto de variables a nivel de programa, organización y país.

  15. Evaluación del maltrato en ancianos pertenecientes a un policlínico universitario Evaluation of abuse to the elderly belonging to an university polyclinic

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    Neity Mendo Alcolea

    2012-03-01

    Full Text Available Se realizó un estudio descriptivo y transversal de 3 382 ancianos pertenecientes al área de salud del Policlínico Universitario "Frank País García" de Santiago de Cuba, durante el primer semestre del 2011, con vistas a evaluar algunas variables de interés relacionadas con el maltrato a este grupo poblacional. Los integrantes de la casuística de menos edad fueron los más afectados, con mayor frecuencia del daño psicológico, la negligencia y el financiero familiar (en ese orden, en tanto, aquellos más longevos padecieron, en menor cuantía, abusos físicos y carencias económicas. Asimismo, el sexo masculino resultó mayormente perjudicado en casi todas las formas de agravio y la familia constituyó, en general, la principal perpetradora del maltratamiento al anciano, de la cual los comisores fundamentales eran los hijos y nietos.A descriptive and cross-sectional study of 3 382 aged persons belonging to the health area of "Frank País García" University Polyclinic from Santiago de Cuba, was carried out during the first semester of the 2011, aimed at evaluating some interest variables related to the abuse to this populational group. The younger members of the case material were the most affected, with higher frequency of psychological damage, negligence and family-financial damage (in that order, while the older ones suffered, physical abuses and economic scarcities, in lower quantity. Also, the male sex was mostly damaged in almost all the offense forms and the family constituted, in general, the main perpetrator of the ill-treatment to the elderly, from which children and grandchildren were mainly those committing abuse.

  16. Prevalencia de lesiones en luchadores olímpicos pertenecientes a la Liga de Lucha Olímpica de Bogotá, D.C.

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    Juan Felipe Correa-Mesa

    2016-09-01

    Full Text Available Introducción. En lucha se presentan eventos que pueden generar alteraciones físicas, como caídas, contactos en el suelo, levantamientos, arqueamientos, entre otros. Objetivo. Estimar la prevalencia de lesiones y factores correlacionados en deportistas practicantes de lucha olímpica. Materiales y métodos. Estudio observacional de tipo correlacional y diseño transversal. Participaron 29 deportistas pertenecientes a la Liga de Bogotá. Resultados. En el último año, 15 deportistas no tuvieron ninguna lesión (51.72%, 11 tuvieron 1 lesión (37.93% y 2 tuvieron 4 lesiones (6.89%. De ellas, el lugar lesionado más prevalente fue el hombro con un 17% y el tipo de lesión más sobresaliente fue la tendinopatía con un 13.79%. El índice de masa corporal (IMC tuvo un efecto positivo en la probabilidad de lesión (valor p=0.07 con significancia al 10% y la variable inicial fue igualmente significativa (valor p=0.014. El resultado del sit and reach test fue significativo al 10% (valor p=0.09, lo que indica una ligera relación positiva entre los más flexibles y la lesión. Conclusiones. La lesión más prevalente ocurrió en el hombro y el tipo de lesión fue la tendinopatía. El IMC, el inicio de la práctica de los 13 a 16 años y el test de sit and seach tienen una significancia positiva hacia el número de lesiones en el último año.

  17. Inventario de los residuos sólidos generados en las empresas antioqueñas pertenecientes a los principales sectores económicos del departamento

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    Dora Ángela Hoyos

    2013-06-01

    Full Text Available Este artículo muestra los resultados de una investigación sobre la producción de residuos sólidos generados por las empresas Antioqueñas. Investigación que fue desarrollada por la Universidad de San Buenaventura, la Universidad de Medellín y la Universidad de Antioquia dentro del programa Expedición Antioquia 2013. Para lo cual, se evaluó la producción de residuos generados en empresas pertenecientes a las actividades económicas; agricultura, ganadería, caza y silvicultura; Explotación de minas y canteras; Industrias manufactureras y Construcción. El propósito del estudio fue conocer la tipología, cantidad e impacto ambiental de los residuos generados en el departamento en los sectores seleccionados, constituyéndose en una base para futuras investigaciones, orientadas a determinar el potencial aprovechamiento de los residuos para la elaboración de nuevos productos. La zona de estudio corresponde al 80,8% de la superficie del departamento de Antioquia, subregiones, Bajo Cauca, Nordeste, Norte, Oriente, Suroeste, Urabá y Valle de Aburrá; las cuales concentran las zonas industriales, mineras y agropecuarias más representativas del departamento, además de ser subregiones altamente pobladas con un crecimiento en infraestructura, representado en un sector de construcción fortalecido. La metodología utilizada fue la construcción de bases de datos de las empresas de los sectores seleccionados para posteriormente obtener información de la generación de residuos sólidos por medio de encuestas realizadas por un aplicativo web, personal o telefónicamente.

  18. Voluntariado e Trabalho Intelectual: Um Diálogo com as Refugiadas Sírias na Turquia; Voluntariado y Trabajo Intelectual: Un Diálogo con las Refugiadas Sirias en Turquía; Volunteering and Intellectual Work: A Dialogue with Syrian Refugees in Turkey

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    Gabriela Cavalheiro Cavalheiro

    2017-07-01

    Full Text Available Resumo: Depois de alguns meses em contato direto com refugiadas sírias na Turquia, este ensaio pretende resumir, de forma breve e objetiva, alguns pensamentos ou conclusões – temporários ou não – sobre estes meses de convívio e trabalho conjunto. Escrito sob a perspectiva de uma acadêmica versada nas teorias de gênero e na crítica feminista, nele coloco em diálogo algumas reflexões teóricas e práticas sobre os efeitos e o impacto do trabalho intelectual na prática do cotidiano. Palavras-chaves: Voluntariado, Gênero, Militância, Academia, Teoria.   Resumen: Después de algunos meses en contacto directo con refugiadas sirias en Turquía, este ensayo pretende resumir, de forma breve y objetiva, algunos pensamientos o conclusiones-temporales o no- sobre estos meses de convivencia y trabajo conjunto. Escrito bajo la perspectiva de una académica versada en las teorías de género y en la crítica feminista, en él coloco en diálogo algunas reflexiones teóricas y prácticas sobre los efectos y el impacto del trabajo intelectual en la práctica de lo cotidiano. Palabras clave: Voluntariado, Género, Militancia, Academia, Teoría.   Abstract: This essay is a short response to my experience in the field, working with Syrian refugees in Turkey. My aim is to put together, in a rather informative way, theory and practice within gender studies feminist criticism in how gender policies actually target women in conflict contexts. More than a record of experiences in the field, this essay is an intellectual exercise and a space for contemplation. Keywords: Humanitarianism, Gender, Militancy, Academia, Theory.

  19. Capital Social y Voluntariado: claves para un financiamiento solidario de la vivienda social. El caso de la fundación Un Techo para Chile

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    Jorge Atria

    2007-01-01

    Full Text Available Aunque en las últimas dos décadas las políticas habitacionales en Chile han introducido mejoras destacables en la comprensión y tratamiento del problema de la vivienda en los sectores más desprotegidos, aún existe una cifra importante de pobreza e indigencia, caracterizada por una evidente exclusión de distintos ámbitos de la sociedad. Esto es especialmente visible en los campamentos, entendidos como asentamientos informales precarios, donde no existe regularización de terreno ni de servicios básicos, adicionado a fenómenos de hacinamiento, segregación y discriminación. De la misma manera, aún se adolece de fórmulas que faciliten la postulación a la vivienda de manera más participativa e integradora, incorporando modelos de gestión y financiamiento alternativos a los imperantes, donde la solidaridad sea una premisa efectiva y no un discurso común. El presente artículo expone la visión y el modelo de trabajo de la fundación Un Techo para Chile (exportada a otros países de Latinoamérica con el nombre de Un Techo para mi País, resaltando el capital social y el voluntariado como estrategias fundamentales que colaboran con un financiamiento solidario de la vivienda social, facilitando la transmisión de información, la defensa de la dignidad, el aseguramiento de la calidad y la búsqueda de la excelencia en el servicio como premisas posibles en el desarrollo habitacional y urbano de las comunidades más pobres del país.

  20. Integración familiar de jóvenes con discapacidad intelectual moderada, pertenecientes a un hogar de menores

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    María Teresa Muñoz Quezada

    2008-01-01

    Full Text Available El trabajo que se informa presenta una descripción y evaluación de un estudio de casos de reintegración familiar de tres jóvenes con discapacidad intelectual moderada pertenecientes a un hogar de menores, desarrollado durante tres años. La metodología utilizada estuvo centrada principalmente en el enfoque biográfico, con la técnica de relatos de vida. Además de presentar las características de sus familias, específicamente de sus madres, los resultados aportan antecedentes claves para poder potenciar el sistema de integración familiar actual que existe para la atención de niños, niñas y jóvenes con necesidades educativas especiales. De los tres casos, sólo uno concretó la reintegración familiar de la joven discapacitada, el segundo está en pro ceso de finalizar la integración y en el tercero, la madre desertó. Se observa que es compleja la integración en las familias de los menores que asisten a centros de protección. Como factores claves para el éxito de la intervención, se reconocen las redes de apoyo sociales y familiares, las estrategias individuales para revincularse con la hija y resignificar su discapacidad, el apoyo de la institución y el trabajo multidisciplinario. Finalmente se concluye a partir de estos casos, cuáles serían los aspectos esenciales que permiten realmente que los menores crezcan y vivan en familia como seres íntegros y plenos. Para ello se requiere contar con un plan de intervención y un seguimiento constante del proceso, en el que se trabaje no sólo con la madre o tutor principal del menor, sino que también se incorpore a toda la familia en el proceso.

  1. IDENTIDAD SOCIAL DE LOS HABITANTES DE LA POBLACIÓN CAROL URZÚA PERTENECIENTE A LA COMUNA DE PUENTE ALTO

    OpenAIRE

    Pérez O., ALEJANDRA

    2012-01-01

    Esta investigación aborda la realidad de la población Carol Urzúa perteneciente a la comuna de Puente Alto en la Región Metropolitana, territorio en el cual se reconoce la presencia de problemáticas sociales como situaciones de pobreza, embarazo adolescente, bajos niveles educacionales, violencia social, microtráfico de drogas, hacinamiento, cesantía, entre otros, los que van configurando contextos de marginalidad y exclusión social. Estos fenómenos están mediados por dinámicas...

  2. Prevalencia de lesiones en luchadores olímpicos pertenecientes a la Liga de Lucha Olímpica de Bogotá, D.C.

    OpenAIRE

    Juan Felipe Correa-Mesa; Diego Fabricio Rodríguez-Camacho; Diana Alexandra Camargo-Rojas; Juan Carlos Correa Morales

    2016-01-01

    Introducción. En lucha se presentan eventos que pueden generar alteraciones físicas, como caídas, contactos en el suelo, levantamientos, arqueamientos, entre otros. Objetivo. Estimar la prevalencia de lesiones y factores correlacionados en deportistas practicantes de lucha olímpica. Materiales y métodos. Estudio observacional de tipo correlacional y diseño transversal. Participaron 29 deportistas pertenecientes a la Liga de Bogotá. Resultados. En el último año, 15 deportistas no t...

  3. Prevalencia de lesiones en luchadores olímpicos pertenecientes a la Liga de Lucha Olímpica de Bogotá, D.C.

    OpenAIRE

    Correa-Mesa, Juan Felipe; Rodríguez-Camacho, Diego Fabricio; Camargo-Rojas, Diana Alexandra; Correa-Morales, Juan Carlos

    2016-01-01

    Resumen Introducción. En lucha se presentan eventos que pueden generar alteraciones físicas, como caídas, contactos en el suelo, levantamientos, arqueamientos, entre otros. Objetivo. Estimar la prevalencia de lesiones y factores correlacionados en deportistas practicantes de lucha olímpica. Materiales y métodos. Estudio observacional de tipo correlacional y diseño transversal. Participaron 29 deportistas pertenecientes a la Liga de Bogotá. Resultados. En el último año, 15 deportistas ...

  4. VISOR GEOGRÁFICO PARA LA CONSULTA PÚBLICA DE LOS BIENES INMUEBLES PERTENECIENTES AL PATRIMONIO CULTURAL DE LA CIUDAD DE RIOBAMBA, PROVINCIA DE CHIMBORAZO

    OpenAIRE

    Mejía Calderón, Danilo Fabián

    2017-01-01

    The present research proposes implement a “Geographical Viewer for the Public Consultation of the Immovable Property Belonging to Cultural Heritage of the city of Riobamba, province of Chimborazo”. By applying Geographic Information System, SIG web platform, files given by Direction of Patrimony Management and Information from Ecuadorian Cultural Heritage Information System of INPC. The viewer structure begins with inventory consolidation, for which it will be used: the declaratory file, r...

  5. Niveles de impulsividad y riesgo de alcoholismo en personas pertenecientes a barras bravas en la ciudad de Ibagué - Colombia

    Directory of Open Access Journals (Sweden)

    José Alonso Andrade Salazar

    2014-01-01

    Full Text Available El objetivo de este trabajo es determinar la relación entre niveles de impulsividad y riesgo de alcoholismo en adultos pertenecientes a “barras bravas” en la ciudad de Ibagué (Tolima a partir de la aplicación del test de CAGE, la Escala de Impulsividad de Plutchik (EI y una ficha de caracterización sociodemográfica. Se utilizó un modelo correlacional de corte transversal. Los hallazgos evidencian niveles bajos (78% y promedios de impulsividad (20%. El 28% no presenta problemas relacionados con el alcohol, mientras que el 36% tiene indicios de consumo y el restante 36% dependencia alcohólica. Se hallaron correlaciones bajas entre las puntuaciones, la correlación significativa fue de tipo directamente proporcional entre edad y riesgo de alcoholismo (r= 0,287; p= 0.43, lo que indica que a mayor edad mayor es el riesgo de alcoholismo.

  6. TIPIFICACIÓN DE ADN MITOCONDRIAL PRECOLOMBINO A PARTIR DE RESTOS DENTALES DE UN INDIVIDUO PERTENECIENTE A LA CULTURA PARACAS (PERÚ

    Directory of Open Access Journals (Sweden)

    Marcela Díaz-Matallana

    2012-01-01

    Full Text Available El objetivo del presente trabajo fue el de deter-minar in vitro el haplogrupo de la región hipervariable I (HVR-I del ADN mitocondrial (ADNmt obtenido a partir de una muestra dental perteneciente a un individuo asociado a la comunidad de los Paracas, hallada por Jorge Reynolds en los años 60 del siglo XX en Ica (Perú. Gracias a esta tipificación molecular, hemos podido contribuir a la información arqueológica y antropológica ya registrada para esta población peruana de más de 2000 años de antigüedad, de-terminando su linaje materno y su vínculo con otros pobladores nativos americanos en la región.

  7. Lavandula × cavanillesii, un híbrido nuevo en la flora alóctona valenciana

    OpenAIRE

    Guillot Ortiz, Daniel; Roselló Picornell, Josep Antoni

    2004-01-01

    Describimos un nuevo taxón de origen híbrido, perteneciente al género Lavandula (Labiatae), descubierto en la provincia de Castellón, L. x cavanillesii D. Guillot & Rosselló (L. angustifolia Mill. x L. dentata).

  8. Rnas inhibidores frente al virus de la inmunodeficiencia humana

    OpenAIRE

    Sánchez Luque, Francisco José

    2013-01-01

    En la presente tesis se describe la generaci??n de peque??as mol??culas de RNA con funci??n inhibidora frente al Virus de la Inmunodeficiencia Humana de Tipo 1 (VIH-1). Este virus es el agente causal del S??ndrome de Inmunodeficiencia Adquirida y perteneciente al g??nero Lentivirus de la familia Retroviridae. El virus presenta una alternancia en cuanto al tipo de material gen??tico en su ciclo de vida, siendo RNA en las part??culas virales y DNA en el provirus (durante la fase de latencia o e...

  9. Intervención sobre ITS/VIH/sida en adolescentes pertenecientes a dos consultorios del policlínico "Plaza" Intervention on STI/HIV/AIDS in adolescents who belong to two medical practices of the polyclinic Plaza

    Directory of Open Access Journals (Sweden)

    Alejandro Luis Fadragas Fernández

    2012-09-01

    Full Text Available Introducción: se observa en el mundo una tendencia ascendente en el padecimiento de las infecciones de transmisión sexual, debido al comienzo de las relaciones sexuales a edades cada vez más tempranas. Objetivo: incrementar el nivel de información acerca de las enfermedades de transmisión sexual. Métodos: se realizó un estudio experimental de intervención, sobre ITS/VIH/sida en un grupo de adolescentes pertenecientes a dos consultorios. De un universo de 125 adolescentes se seleccionó una muestra de 70 de ellos. Se aplicó una encuesta previa al programa de intervención, luego se implementó el curso y después se aplicó nuevamente el cuestionario. Resultados: inicialmente 65 adolescentes (92,8 %, respondieron tener información sobre el tema tratado, y después de la intervención se elevó a un 100 %. Dentro de las fuentes de obtención de la información, la familia fue la más identificada por 47 encuestados (67,1 % y después de la intervención por 67 (95,7 %. Al analizar los grupos de edades a los que afectan las infecciones de transmisión sexual, 62 encuestados (88,5 %, identificaron que puede ser a todas las edades y después se elevó a 64 (91,4 %. Con respecto a la eficacia en el uso del condón para evitar las infecciones de transmisión sexual, al comienzo respondieron afirmativamente 41 (58,5 % y luego se elevó a un 100 %. Conclusiones: en primera instancia los adolescentes conocían muy poco sobre algunos de los aspectos estudiados, y después de impartido el curso, se observó un aumento del conocimiento sobre estas enfermedades en sentido general.Introduction: There is an upward trend in the world related to sexually transmitted infections, due to the onset of sexual intercourse at increasingly early ages. Objective: to increase the level of information about sexually transmitted diseases. Methods: An experimental study intervention was carried out on STI/HIV/AIDS in a group of teenagers from two medical practices

  10. Factores de riesgo relacionados con la capacidad intelectual en niños escolarizados de 6 a 8 años pertenecientes a la comuna Nororiental y Noroccidental de la ciudad de Medellín

    OpenAIRE

    Castaño Ortega, Sulay

    2011-01-01

    Ubicación en Biblioteca USB Medellín (San Benito): CD-1908t.-- Grupo Internacional de Investigación Neuroconductual GIINCO - Línea de Investigación Neurodesarrollo y Procesos Cognitivos - Tema: Factores de Riesgo El objetivo del trabajo es determinar la relación entre los factores de riesgo (prenatales, perinatales, posnatales y psicosociales) con las dimensiones de la Capacidad Intelectual en niños escolarizados de 6 a 8 años pertenecientes a la comuna nororiental y noroccidental de la ci...

  11. Velocidad media de ganancia de peso y estatura en niños de 2 A 10 años pertenecientes a familias del área rural del municipio de Marinilla-Antioquia, Colombia

    OpenAIRE

    Martha Cecilia Álvarez Uribe; Elizabeth Cristina Montoya Puerta

    2004-01-01

    Fundamento: El objetivo del estudio fue evaluar la velocidad media de crecimiento de 259 niños de 2 a 10 años, pertenecientes a 150 familias rurales de Marinilla, Colombia. Métodos: Estudio descriptivo longitudinal prospectivo. En una muestra representativa de familias campesinas productoras de hortalizas y que tuvieran niños de 2 a 10 años, con una confianza del 95% y un error del 5% y un sobremuestreo del 20%. Para determinar la velocidad media de crecimiento en peso y ...

  12. Efectos de la percepción de dos estilos musicales sobre el nivel y localización de la actividad electroencefalográfica en músicos pertenecientes a contextos culturales occidental e indígena

    OpenAIRE

    Gómez Rojas, Juan Daniel; Profesor de la Facultad de Psicología, Pontificia Universidad Javeriana. Ph.D. en Neuropsicología del Instituo Max Planck de la Universidad de Munich.; Gutiérrez, María Fernanda; Candidata MSc a Maestría en Neuropsicología Cognitiva. Ludwig - Maximilians - Universität München, Alemania.

    2010-01-01

    Los estudios sobre música han mostrado ser claves para indagar sobre cómo el cerebro se modificacon la experiencia. El objetivo del presente estudio es indagar por el tipo, nivel y localización de laactividad electroencefalográfica en músicos acordeonistas pertenecientes a diferentes contextosculturales, durante la percepción musical de piezas clásicas e indígenas interpretadas con acordeón.Para esta investigación, se utilizó la metodología de mapeo cerebral con electroencefalograma. Elanális...

  13. O ‘Campus Arqueológico do Ervedal’ (Fundão, Portugal: um projecto científico-pedagógico de voluntariado jovem / The Archeological campus of Ervedal (Fundão, Portugal: a scientific pedagogical project of young volunteers

    Directory of Open Access Journals (Sweden)

    João Mendes Rosa

    2014-01-01

    Full Text Available Resumo: No ano de 2007, era inaugurado na cidade do Fundão (Castelo Branco, Portugal, um museu que pretendia corresponder a um espaço de fruição museal em contexto ibérico, em que o próprio discurso espelhasse a convivialidade cultural transfronteiriça, fomentadora da actividade arqueológica numa base de formação escolar e universitária, onde o voluntariado jovem desempenha um importante papel. Abstract: In 2007, was inaugurated in the city of Fundão (Castelo Branco, Portugal, a museum intended to correspond to a space of museal fruition in the Iberian context in which her own speech mirrored the border cultural conviviality, fosterer of archaeological activity, on a basis of school and university education, where youth volunteering plays an important role.

  14. El PENSAMIENTO CREATIVO EN ESCOLARES DE 5º AÑO BÁSICO PERTENECIENTES A ESTABLECIMIENTOS MUNICIPALIZADOS CON JORNADA ESCOLAR COMPLETA

    Directory of Open Access Journals (Sweden)

    Valeska P. Miranda Labra

    2007-01-01

    Full Text Available Uno de los objetivos de la Reforma educacional impl ementada en nuestro país ha sido potenciar el desarrollo de habilidades creativas, para lo cuál s e han implementados diversos talleres realizados durante la extensión de la jornada escolar. La pres ente investigación pretende determinar si existen diferencias entre los talleres desarrollados en est ablecimientos municipalizados distintos, en cuanto al nivel de desarrollo del pensamiento creativo de sus alumnos. Mediante el “Test Figurativo de Pensamiento Creativo ” de Paul Torrance, se logró establecer que existen diferencias en el nivel de pensamiento creativo, siendo el Taller de Arte el q ue obtuvo una mayor puntuación que el Taller de reforzamiento de Lenguaje. En base a éstos resultados será posible entregar la s herramientas necesarias al establecimiento que obtuvo una menor puntuación, permitiéndole potencia r a tiempo el pensamiento creativo de sus alumnos. Actualmente se está trabajando con los alu mnos que obtuvieron bajas puntuaciones, de manera de poder identificar factores inhibidores qu e obstaculizan sus procesos creativos.

  15. Comportamiento de la violencia doméstica en mujeres pertenecientes al consultorio "Altos de Milagro" Behavior of the home violence in women from "Altos de Milagro" consulting room

    Directory of Open Access Journals (Sweden)

    Madeline Espinosa Morales

    2011-06-01

    Full Text Available Introducción: la violencia doméstica, específicamente contra la mujer latinoamericana, se ha convertido en los últimos años en un serio problema médico, social y cultural, que exige una urgente atención integral de salud, lo que motivó a las autoras a desarrollar la investigación. Objetivo: determinar el comportamiento de la violencia doméstica en mujeres mayores de 15 años atendidas en el consultorio Altos de Milagro, en Maracaibo, Estado Zulia, Venezuela, entre diciembre de 2008 y diciembre 2009. Métodos: se realizó un estudio descriptivo, retrospectivo para caracterizar el comportamiento de la violencia doméstica en el consultorio popular antes mencionado utilizando una encuesta elaborada por las autoras. Resultados: fueron atendidas 51 pacientes víctimas de violencia doméstica, con predominio de las edades entre 35 y 44 años (39,21 %. Resultaron ser acompañadas el 58,82 % y la totalidad de las pacientes sufrió violencia psicológica (100 %. La escolaridad primaria representó el 39,21 %, y 30 de las pacientes estudiadas pertenecen a familias grandes y extensas, con gran consumo de alcohol, para un 58,82 %. Se encontró, además, que más del 50 % de las estudiadas sufrió violencia doméstica, perteneciendo a la tercera-cuarta década de la vida, con bajo nivel intelectual. Conclusiones: predominó la violencia psicológica, las familias extensas y grandes, y en la mayor parte de estas el factor de riesgo más frecuente fue la ingesta de bebidas alcohólicas.Introduction: home violence specifically against the Latin American woman became in past years in a serious medical, social and cultural problem requiring an urgent integral health care, encouraging authors to develop present research. Objective: to determine the behavior of home violence in women aged over 15 seen in the "Altos de Milagro" consulting room in Maracaibo, Zulia State from December, 2008 to December, 2009. Methods: a retrospective and descriptive study was conducted to characterize the behavior of home violence in the above mentioned consulting room using a survey designed by authors. Results: fifty one patients victims of home violence were seen with predominance of ages between 35 and 44 years. (39,21 %. The 58,82 % was accompanied and most of them suffered home psychological violence (100 %. The primary schooling accounted for the 39,21 % and 30 of the study patients belong to families with many members, with a great consumption of alcohol for a 58,82 %. Also, it was found that more than the 50 % of study patients suffered home violence, belonging to third-fourth decades of life and with low intellectual level. Conclusions: there was predominance of psychological violence, families with many members and in most of them the more frequent risk factor was the consumption of alcohol.

  16. Estudio y desarrollo de procesos de soporte de negocio en una empresa española perteneciente al sector de las infraestructuras, servicios, ingeniería y sistemas.

    OpenAIRE

    Porcar Tremps, Víctor

    2010-01-01

    El presente proyecto tiene como objetivo principal estudiar y desarrollar procesos de soporte de negocio de una multinacional española, cuya actividad principal es el negocio de las infraestructuras. Las empresas llevan tiempo trabajando para alcanzar la máxima excelencia en la gestión de sus procesos, y para ello han ido aplicando progresivamente los diferentes avances tecnológicos que han ido surgiendo. En este caso la herramienta utilizada es un sistema BPM (Business Process...

  17. Interacción de la radiación electromagnética. Segregación espectral y espacial de cultivos frente a malas hierbas todos ellos pertenecientes al género Brassica.

    OpenAIRE

    Barreiro Elorza, Pilar; Ross, D.; Kennedy, D.; Glasbey, C.; Ruiz-Altisent, Margarita

    1998-01-01

    La interacción de la radiación electromagnética, denominada luz si abarca el rango visible por el ojo humano (400-700nm), da lugar a un espectro específico para cada objeto animado o inanimado. En el ámbito agrario, la reflectancia espectral de los productos agrícolas tanto en el rango visible como en el infrarrojo ha sido ampliamente estudiada (algunos ejemplos se encuentran recogidos en las referencias 1, 2, 3, 4, 9, 10 & II de la bibliografía).

  18. Proyección laboral de jóvenes que presentan deficiencia intelectual pertenecientes al proyecto de integración escolar municipal y escuelas especiales en la ciudad de San Felipe, Chile

    Directory of Open Access Journals (Sweden)

    Sergio Emilio Manosalva Mena

    2011-01-01

    Full Text Available El presente artículo da cuenta de una investigación que se realizó dentro de la ciudad de San Felipe (Chile, con cuatro establecimientos educacionales y empresas de la zona. De las escuelas que entregan formación laboral a jóvenes que presentan deficiencia mental, dos son escuelas especiales tradicionales y dos son liceos técnico-profesionales en la modalidad de inclusión/integración de estudiantes con y sin discapacidad. Se estimó pertinente la realización de un estudio de tipo cualitativo descriptivo, principalmente para conocer el tipo de formación que reciben estos alumnos, la demanda de mano de obra que requiere la comuna, y la percepción que posee el empresariado que emplea en sus dependencias a personas que presentan discapacidad intelectual. Los resultados de la investigación permitieron establecer que existe una descontextualización e incoherencia entre la demanda, la oferta de mano de obra y la formación laboral de los jóvenes con discapacidad intelectual en la ciudad de San Felipe.

  19. Análisis de los factores que inciden en la deserción laboral de pilotos y tecnólogos pertenecientes al área de aviación policial

    OpenAIRE

    Pimienta Jiménez, Juan; Carvajal Cabrera, John; Calderón Pérez, Jorge Luis

    2016-01-01

     Artículo presenta resultados de una investigación orientada a identificar factores fundamentales que inciden en la deserción de las actividades laborales dentro del área de aviación de la policía nacional, en el personal que fue capacitado como piloto, tecnólogo y técnico, y que se desempeñaba en el área de aviación de la policía nacional de Colombia. La investigación se desarrolló bajo un enfoque mixto, utilizando un instrumento de medición (tipo encuesta) a pilotos, tecnólogos y técnicos r...

  20. Modelo De Programa De Educación Y Difusión En Salud Sexual Y Reproductiva, Con Enfoque Intercultural Para Adolescentes De La Comunidad De Gualsaqui Perteneciente Al Canton Otavalo Provincia De Imbabura.

    OpenAIRE

    Mogrovejo, Ligia

    2013-01-01

    La propuesta sobre salud sexual y reproductiva estructurada con talleres, se aplica a las y los adolescentes de la comunidad de Gualsaquí, considerando a los grupos de mestizos, indígenas con educación e indígenas analfabetos, quienes serán los beneficiarios directos de éste programa de difusión; además quienes se beneficiarán de ésta propuesta serán las familias y comunidad en general. Este estudio permitió identificar limitaciones existentes: como es ...

  1. ALS Association

    Science.gov (United States)

    ... toward a world without ALS! Walk to Defeat ALS® Walk to Defeat ALS® draws people of all ... We need your help. I Will Advocate National ALS Registry The National ALS Registry is a congressionally ...

  2. Familial ALS

    Science.gov (United States)

    Boylan, Kevin

    2015-01-01

    Synopsis Genes linked to ALS susceptibility are being identified at an increasing rate owing to advances in molecular genetic technology. Genetic mechanisms in ALS pathogenesis appear to exert major effects in ~10% of patients, but genetic factors at some level may be important components of disease risk in most ALS patients. Identification of gene variants associated with ALS has informed concepts of the pathogenesis of ALS, aided the identification of therapeutic targets, facilitated research to develop new ALS biomarkers, and supported the establishment of clinical diagnostic tests for ALS-linked genes. Translation of this knowledge to ALS therapy development is ongoing. PMID:26515623

  3. Relación entre el consumo de frutas, vegetales y alimentos altos en grasa, con el nivel de actividad física, en niñas y niños costarricenses en edad escolar, pertenecientes la provincia de San José

    OpenAIRE

    Moreno Morales, Rosa María Imelda

    2013-01-01

    Texto texto completo Relación entre el consumo de frutas, vegetales y alimentos altos en grasa, con el nivel de actividad física, en niñas y niños costarricenses en edad escolar, pertenecientes la provincia de San José

  4. Ti, Al

    Indian Academy of Sciences (India)

    In the present study, authors report on the effect that substrate bias voltage has on the microstructure and mechanical properties of (Ti, Al)N hard coatings deposited with cathodic arc evaporation (CAE) technique. The coatings were deposited from a Ti0.5Al0.5 powder metallurgical target in a reactive nitrogen atmosphere at ...

  5. Calidad del servicio en el centro de servicio al contribuyente Nicolás de Piérola Sunat – Lima 2016

    OpenAIRE

    Vizcardo Fernández, Sara Ana de los Angeles

    2017-01-01

    La presente tesis titulada “Calidad del servicio en el centro de servicio al contribuyente Nicolás de Piérola - Sunat, Lima 2016” tiene por objetivo determinar la calidad del servicio que brinda el Centro de Servicio al Contribuyente de Nicolás de Piérola, centro perteneciente a la entidad pública Superintendencia Nacional de Aduanas y Administración Tributaria – SUNAT. El presente trabajo es de investigación descriptiva, corte transversal, no experimental y enfoque cuantita...

  6. Prevalencia y factores asociados al consumo de bebidas azucaradas en escolares de 9 a 17 años de Bogotá, Colombia: Estudio FUPRECOL

    OpenAIRE

    Fuerte Celis, Juan Camilo

    2016-01-01

    Objetivo: Determinar la prevalencia y los factores asociados al consumo de bebidas azucaradas en una población escolar de Bogotá, Colombia, pertenecientes al estudio FUPRECOL. Métodos: Estudio descriptivo y transversal, realizado en 8136 niños y adolescentes en edad escolar entre 9 y 17 años de Bogotá, Colombia. El peso, la estatura, el índice de masa corporal (IMC), la circunferencia de cintura y el porcentaje de grasa, se recogieron como marcadores antropométricos y de composición corpor...

  7. Avance al estudio de las pinturas esquemáticas de las Peñas de Cabrera. Casabermeja, Málaga

    Directory of Open Access Journals (Sweden)

    Cecilio BARROSO RUIZ

    2009-10-01

    Full Text Available La estación de arte rupestre esquemático de las Peñas de Cabrera, se encuentra situada en el término municipal de Casabermeja, al este del mismo y muy cerca de la linde que separa a este pueblo con el de Colmenar. Su acceso es relativamente fácil, estando ubicada en el Cortijo de Cabrera (del cual toma el nombre; es un pequeño cerro de areniscas silíceas, muy duras y compactas, pertenecientes al Flysch de Colmenar.

  8. Aproximación proteómica al estudio de la respuesta diferencial del metabolismo energético al estrés por bajas temperaturas en tomate y pimiento

    OpenAIRE

    Sánchez-Bel, Paloma; Egea, Isabel; Sánchez Ballesta, M. Teresa; Sevillano, Laura; Martínez Madrid, María Concepción; Romojaro Almela, Félix Ramón; Bolarín, María C.; Flores, Francisco B.

    2012-01-01

    Tomate (Solanum lycopersicum) y pimiento (Capsicum annuum), son dos especies hortofrutícolas pertenecientes a la familia Solanaceae susceptibles a sufrir daños por frío cuando se almacenan a bajas temperaturas, lo que afecta seriamente a la calidad de los frutos, siendo causa de importantes pérdidas económicas en el sector agro-alimentario. Una de las principales respuestas celulares al estrés por bajas temperaturas consiste en el mantenimiento de la homeostasis osmótica por la acumulación de...

  9. La ingeniería al servicio de la historia: imágenes invisibles del Paleolítico

    Directory of Open Access Journals (Sweden)

    Aroa Gutiérrez Alonso

    2014-10-01

    Full Text Available El presente artículo pretende describir el desarrollo de una nueva metodología no invasiva de documentación digital de petroglifos y pinturas rupestres pertenecientes al paleolítico, a través de técnicas y herramientas del tratamiento digital de imágenes para optimizar materiales y tiempos en la obtención de información gráfica, representativa y de precisión

  10. Aproximación comparativa inicial en resultados del WISC-III v.ch. entre una muestra de jóvenes escolarizados pertenecientes a zonas rurales de la XV Región de Arica y Parinacota y la norma nacional

    OpenAIRE

    Veloso, Constanza; Cuadra, Alejandro; Storey, Roberto; González, Roberto; Moraga, Benjamín

    2016-01-01

    El objetivo general de esta investigación fue comparar los resultados de la adaptación chilena del WISC-III obtenidos en una muestra de 94 jóvenes pertenecientes a zonas rurales de la XV Región de Arica y Parinacota con la norma nacional. Además, se decidió incluir una medición adicional de coeficiente intelectual, el test de inteligencia no verbal TONI-2, ya que no se encuentra afecto a sesgo lingüístico, motriz o cultural. Los hallazgos de esta investigación evidencian que el coeficiente in...

  11. Aportes y Desafíos de Estudiar el Voluntariado Desde la Mirada del Sujeto: Análisis de los Hallazgos de Marta, Pozzi y Marzana (2010 Contributions and Challenges of Studying Volunteering From a Subject's Perspective: Analysis of Marta, Pozzi and Marzana's Findings (2010

    Directory of Open Access Journals (Sweden)

    María Paz Cadena

    2010-11-01

    Full Text Available El presente artículo analiza los resultados del estudio Voluntarios y Ex Voluntarios: Perfiles de Participación Ciudadana a Través del Voluntariado, realizado por Marta, Pozzi y Marzana (en este número, quienes proponen 4 perfiles de voluntarios: voluntarios en ejercicio, voluntarios por necesidades personales, ex voluntarios ciudadanos activos y ex voluntarios por oportunidad. La discusión se articula en base a los beneficios que tiene una aproximación multidimensional desde la perspectiva del sujeto. Para ello se analizan sus aportes a la comprensión de temáticas como el rol de las motivaciones en la participación prosocial, los mecanismos que promueven este tipo de conductas y la diferenciación entre causas y consecuencias de ella. Se discuten algunas ideas, como la importancia de la reelaboración de las motivaciones, el posible rol mediador de estas en la relación entre familia y participación voluntaria y la importancia de considerar en futuros diseños la organización temporal que los propios jóvenes dan a sus experiencias. Se mencionan, además, algunas limitaciones del estudio relacionadas con variables religiosas que pudieran explicar los resultados y con la dificultad de establecer si estos son específicos a esta forma de participación.This article analyzes the results of the study Volunteers and Ex-Volunteers: Paths to Civic Engagement Through Volunteerism, by Marta, Pozzi, and Marzana (in this issue, who propose 4 types of volunteers: volunteers in action, volunteers for personal need, active citizens ex-volunteers and ex-volunteers by chance. The discussion builds upon the benefits of a multidimensional approach from the subject's perspective. To accomplish this, its contributions to the understanding of topics, such as the role of motivation in prosocial involvement, the mechanisms that promote this type of behavior, and the differentiation between causes and consequences of it, are analyzed. Some ideas are

  12. Los estudiantes Universitarios Javerianos y su respuesta al sentido de la vida

    Directory of Open Access Journals (Sweden)

    Alba Liliana Jaramillo

    2008-01-01

    Full Text Available El objetivo de este estudio fue identificar qué aspectos influyen, de manera significativa, en el sentido de vida en estudiantes, entre 16 y 34 años de edad, pertenecientes a la Carrera de Psicología de la Pontificia Universidad Javeriana de Cali. Para la recolección de la información se utilizó la escala existencial de A. Langle y C. Orgler, un instrumento técnico para el abordaje preventivo, diagnóstico y terapéutico del sentido de vida; el instrumento presentó 46 reactivos, divididos en cuatro sub-escalas: auto distanciamiento (AD, auto trascendencia (AT, libertad (L, responsabilidad (R. Dicho instrumento tuvo una calificación de tipo Likert. La muestra se conformó con un total de 277 estudiantes, distribuidos en 60 hombres y 217 mujeres, todos pertenecientes a la Carrera de Psicología, desde primero a décimo semestre. Los resultados muestran que los puntajes obtenidos se ubicaron por debajo de la media para todas las variables (edad, género y semestre con un puntaje de 177.83 para la escala total, lo que indica que el nivel de sentido de vida de los estudiantes es bajo, sin diferencias significativas en ninguna de las variables con relación al sentido de vida.

  13. AL Amyloidosis

    Directory of Open Access Journals (Sweden)

    Desport Estelle

    2012-08-01

    Full Text Available Abstract Definition of the disease AL amyloidosis results from extra-cellular deposition of fibril-forming monoclonal immunoglobulin (Ig light chains (LC (most commonly of lambda isotype usually secreted by a small plasma cell clone. Most patients have evidence of isolated monoclonal gammopathy or smoldering myeloma, and the occurrence of AL amyloidosis in patients with symptomatic multiple myeloma or other B-cell lymphoproliferative disorders is unusual. The key event in the development of AL amyloidosis is the change in the secondary or tertiary structure of an abnormal monoclonal LC, which results in instable conformation. This conformational change is responsible for abnormal folding of the LC, rich in β leaves, which assemble into monomers that stack together to form amyloid fibrils. Epidemiology AL amyloidosis is the most common type of systemic amyloidois in developed countries with an estimated incidence of 9 cases/million inhabitant/year. The average age of diagnosed patients is 65 years and less than 10% of patients are under 50. Clinical description The clinical presentation is protean, because of the wide number of tissues or organs that may be affected. The most common presenting symptoms are asthenia and dyspnoea, which are poorly specific and may account for delayed diagnosis. Renal manifestations are the most frequent, affecting two thirds of patients at presentation. They are characterized by heavy proteinuria, with nephrotic syndrome and impaired renal function in half of the patients. Heart involvement, which is present at diagnosis in more than 50% of patients, leading to restrictive cardiopathy, is the most serious complication and engages prognosis. Diagnostic methods The diagnosis relies on pathological examination of an involved site showing Congo red-positive amyloid deposits, with typical apple-green birefringence under polarized light, that stain positive with an anti-LC antibody by immunohistochemistry and

  14. Metodología para el entrenamiento integrado de la resistencia especial (anaeróbica en atletas juveniles de baloncesto pertenecientes a la Espa provincial “Ormani Arenado” de Pinar del Río

    Directory of Open Access Journals (Sweden)

    Pedro Alberto Martínez Hernández

    2007-12-01

    Full Text Available La deficiente preparación física especial acorde con las características del juego, es uno de los aspectos elementales que incide en la óptima preparación deportiva de los jugadores juveniles de baloncesto. Es la resistencia especial (anaeróbica, como dirección física determinante dentro de la etapa de preparación especial, una de las que ha mostrado tal situación, derivada de la programación no adecuada de las cargas especificas de entrenamiento y al empirismo de los entrenadores al seleccionar los ejercicios especiales destinados en tal sentido. Para concebir cómo darle tratamiento en el proceso de preparación de los atletas se consideró como elemento esencial “el entrenamiento integrado”, en tal dirección, realizando una adecuada dosificación de los ejercicios, para que los atletas puedan interactuar de acuerdo con la dinámica de la competencia. Esto se sustentó en el uso de métodos investigativos que permitieron potenciar los criterios expresados por varios autores sobre el entrenamiento integrado y proyectar el contenido de la carga de entrenamiento y competencia que se realizará. En el trabajo se brinda una selección de principios destinados en este caso al desarrollo de la resistencia especial (anaeróbica, así como la utilización de un test de control para medir la misma. La metodología brinda una serie de procedimientos, que fueron sometidos al criterio de especialistas, constatándose que estos van a permitir al entrenador organizar y optimizar un proceso de entrenamiento dirigido al desarrollo de la condición física en baloncesto.

  15. Técnicas de minería de datos aplicadas al diseño de un curso de Estadística

    OpenAIRE

    Lanzarini, Laura Cristina; Maulini, Juan Andrés; Villa Monte, Augusto; Corbalán, Leonardo César; Grossi, Marcos

    2010-01-01

    El presente trabajo utiliza estrategias pertenecientes al área de la Minería de Datos para analizar la metodología de enseñanza aplicada hasta el momento en un curso de Probabilidades y Estadística básico. También se propone la utilización de una herramienta de software que reemplace la manera de realizar los trabajos prácticos. Con esto se espera poder contar con información permanentemente actualizada del desempeño de los alumnos y a la vez incorporar una metodología de trabajo que favorezc...

  16. Universitarios y Voluntariado: Análisis del Involucramiento en Acciones Filantrópicas de los Alumnos de la PUC University Students and Volunteering: Analysis of the Involvement in Philanthropic Actions of PUC Students

    Directory of Open Access Journals (Sweden)

    René Ríos

    2004-11-01

    Full Text Available El artículo describe el involucramiento de los estudiantes universitarios en actividades voluntarias de filantropía (ayuda a terceros, culturales, de causas y campañas, asociatividad estudiantil (centros de alumnos y movimientos u organizaciones políticas. Se explica el involucramiento por: a la estructura familiar que establecería disposiciones para involucrase, incluyendo variables como el nivel socio económico y educacional de los padres y las variables que actúan como estabilizadores de la disposición, fundamentalmente el proyecto educativo escolar; y b la religión y vivencia de la religiosidad. Se extraen consecuencias referidas al proyecto educativo de la propia universidad, en particular los referidos a la adquisición de competencias y habilidades crecientemente demandadas por la profesionalización de las organizaciones del tercer sector.This article describes university students' involvement in philanthropic help to others, cultural activities, campaigns, student associations and political movements and organizations. Involvement is explained by: a the family structure that establishes basal dispositions towards involvement, including variables such a parental socio economic and educational level and variables that act as stabilizers of the involvement disposition, in particular the educational project of the high school; b religion and experience of religiosity. From the interpretation several consequences are drawn for the university's educational project, in particular those referred to the acquisition of abilities and competencies increasingly demanded by the professionalization of third sector organizations.

  17. Adaptación al español del instrumento sobre cultura organizacional de Denison

    Directory of Open Access Journals (Sweden)

    Tomás Bonavia

    2013-08-01

    Full Text Available En este estudio se presentan los resultados de la adaptación a grupos I+D universitarios de habla hispanade la encuesta sobre cultura organizacional de Denison. Este cuestionario, compuesto por 60 ítems que identifican 12 tipos culturales, que a su vez se agrupan en cuatro dimensiones, ha demostrado su influencia para aumentar la efectividad organizacional. La adaptación al castellano que aquí se propone ha sido aplicada a 488 personas pertenecientes a 39 grupos de I+D tecnológicos de la Universidad Politécnica de Valencia. Los resultados obtenidos muestran unas propiedades psicométricas adecuadas para la adaptación realizada en cuanto a validez y fiabilidad, que replican casi en su totalidad la estructura del modelo de la versión original.

  18. Derecho humano al agua y principio de unidad de gestión

    Directory of Open Access Journals (Sweden)

    Alma Patricia Domínguez Alonso

    2014-04-01

    Full Text Available El trabajo analiza el reciente reconocimiento a nivel internacional delDerecho humano al agua, que ha abierto una nueva perspectiva desdela que abordar el uso y gestión de este decisivo recurso para la vidaen el planeta. Un agua potable limpia y el saneamiento son esencialespara la realización de todos los derechos humanos. En este sentido,revista mucha importancia el principio de unidad de gestión de lasaguas, que supone que las aguas de una misma cuenca -en cuantoforman un conjunto integrado- sean gestionadas de forma homogénea.El objetivo de un buen estado de las aguas debe perseguirse en cadacuenca hidrográfica, de modo que se coordinen las medidas relativasa las aguas superficiales y las aguas subterráneas pertenecientes almismo sistema ecológico, hidrológico e hidrogeológico.

  19. Creencias en fumadores pertenecientes a un programa de salud cardiovascular Crenças entre fumantes em um programa de saúde cardiovascular Beliefs among smokers in a cardiovascular health program

    Directory of Open Access Journals (Sweden)

    Renata Virginia González Consuegra

    2004-04-01

    Full Text Available La presente investigación identifica las creencias de consumidores de tabaco, usuarios de un programa de promoción de la salud cardiovascular en la ciudad de Bogota-Colombia, mediante abordaje cuanti-cualitativa. A partir, de entrevista a profundidad grabada por 15 personas del grupo de promoción de la salud cardiovascular, quienes voluntariamente constituyeron la muestra hasta lograr la saturación de la temática en cuestión. Los datos fueron analizados y posibilitaron una descripción holistica de la interpretación frente a al cultura y al habito de consumir tabaco. Se obtuvo información que se consideró lográndose con ello una descripción amplia de motivaciones y factores desalentadores para la cesación del habito del tabaquismo.Este estudo identificou as crenças de tabagistas usuários de um programa de promoção à saúde cardiovascular da cidade de Bogotá-Colômbia, pela abordagem metodológica quanti-qualitativa. Foram realizadas entrevistas em profundidade com 15 pessoas do grupo de promoção à saúde cardiovascular, que voluntariamente constituíram a amostra até obter-se a saturação da temática em questão. Os dados foram analisados e possibilitaram uma descrição ampla e holística da interpretação frente à cultura e ao hábito de fumar. Os resultados forneceram uma ampla descrição das motivações e dos fatores e desencorajadores para a cessação do hábito do tabagismo.The present investigation by means of boarding quanti-qualitative, identifies the beliefs of tobacco consumers, users of a program of promotion of the cardiovascular health in the city of Bogotá-Colombia. The information harvesting became from recorded interviews in depth of 15 persons of the promotion group, who voluntarily constituted the provisory sample until obtaining the thematic saturation of the issue one. The data were analysed and the results considered by the culture. We obtained with it a large description of motivations and

  20. Estado de salud bucal de la población geriátrica perteneciente a la Clínica Ormani Arenado Oral health of the geriatric population belonging to "Ormani Arenado" Dental Clinic

    Directory of Open Access Journals (Sweden)

    Juan Cardentey García

    2011-06-01

    Full Text Available Las sociedades actuales se caracterizan por un crecimiento de las poblaciones de la tercera edad. Ello demanda una atención multidisciplinaria y estomatológica necesaria. Se realizó un estudio descriptivo y transversal desde octubre de 2009 hasta julio de 2010, para evaluar el estado de salud bucal de los gerontes del área de salud del Policlínico Raúl Sánchez, en Pinar del Río. El universo de estudio estuvo constituido por la totalidad de los pacientes mayores de 60 años del área (1563, de los cuales se obtuvo una muestra de trabajo de 390 ancianos, mediante un muestreo probabilístico por conglomerado bietápico. Se les realizó el examen oral y extraoral. Para recolectar la información se utilizó una encuesta epidemiológica de salud bucodental y otra de conocimientos, diseñadas al efecto. Para el procesamiento de la información se aplicó el estadígrafo Ji cuadrado para la asociación entre las variables cualitativas, al 95% de confiabilidad. La hipertensión arterial fue la enfermedad general que más afectó a los gerontes, y la diabetes mellitus, la más relacionada con la salud bucal de los ancianos; la enfermedad periodontal y estomatitis subprótesis fueron las patologías bucales más prevalecientes. Como factores de riesgo prevalecieron la deficiente higiene bucal y de las prótesis, además que resultaron los que más afectaron a los pacientes objeto de estudio; la tercera parte de ellos necesitó la rehabilitación protésica. Se evaluó de deficiente la salud bucal de la población geriátrica estudiada.Current societies are characterized by an increase in the aged population. That is why a multidisciplinary and dentistry care is necessary. A descriptive and cross-sectional study was conducted from October 2009 to July 2010 to assess the oral health of the geriatric population that live in the health area of "Raul Sanchez" Outpatient Clinic, Pinar del Rio. The target group was comprised of the total of patients

  1. Factores asociados al destete precoz

    OpenAIRE

    Georgina Peraza Roque; Mercedes Soto Marcelo; Elina de la Llera Suárez; Soraya Alonso Suárez

    1999-01-01

    Se realiza un estudio descriptivo y transversal a 91 niños nacidos entre el 1ro de enero y el 31 de diciembre de 1993, en los 14 consultorios del médico de la familia, pertenecientes a un Grupo Básico de trabajo, del Policlínico Docente "Antonio Maceo" del municipio Cerro, en la Ciudad de La Habana. Se analizaron factores biopsicosociales relacionados con la madre y con el niño. Se confeccionó la base de datos mediante el programa Foxplus, realizándose comparaciones de media y se empleó el mé...

  2. psicoactivas al interior de la universidad nacional de Colombia

    Directory of Open Access Journals (Sweden)

    Jaime A. Bayona

    2005-01-01

    Full Text Available La venta y consumo de Sustancias Psicoactivas (SPA dentro de la Universidad Nacional de Colombia ha representado una constante preocupación para la comunidad universitaria. El presente estudio aborda esta problemática desde la perspectiva de las actitudes, construyendo un instrumento evaluador de la actitud frente a la venta y consumo de SPA entre los estudiantes con una escala tipo Likert de 21 items. El instrumento se aplicó a una muestra de 1321 estudiantes pertenecientes a 11 facultades de la Universidad. Los resultados indicaron una actitud en general negativa frente al consumo y venta de SPA, siendo las facultades de Medicina, Enfermería y Odontología las que obtuvieron la actitud más negativa en la prueba; mientras que las facultades de Artes y Ciencias Humanas, fueron las que puntuaron más alto, indicando una actitud más favorable. Adicionalmente, no existieron diferencias entre hombres y mujeres, pero tanto la edad como el semestre indicaron relaciones inversas, donde la actitud era más negativa entre los rangos superiores de edad y semestre, que entre los inferiores. Finalmente, se discuten las relaciones entre el grupo de referencia de los estudiantes, tipo de entrenamiento, diseño ambiental de la universidad y la actitud de los estudiantes frente a la venta y consumo de SPA

  3. Factores de riesgo del bajo peso al nacer

    Directory of Open Access Journals (Sweden)

    Ernesto Rosell Juarte

    1996-06-01

    Full Text Available Se realizó una investigación de casos y controles en las mujeres que parieron niños con bajo peso, de los consultorios urbanos de médicos de la familia pertenecientes al Policlínico Comunitario Docente "Carlos J. Finlay" de Camagüey, durante el año 1994, con el objetivo de identificar los factores de riesgo biológico y socioeconómicos que con más frecuencia se asociaron; se estudiaron 32 "casos" y 53 "controles" de un universo de 521 nacidos vivos. Se demostró que la edad materna hasta 19 años y de 35 y más, la ganancia insuficiente de peso durante la gestación, el antecedente familiar de prematuridad, la amenaza de parto pretérmino y la ruptura prematura de las membranas, resultaron ser factores de riesgo, y esto no coincide con lo reportado por algunos autores en la evaluación de otros factores asociados.

  4. All About ALS

    Science.gov (United States)

    ... Subscribe August 2015 Print this issue All About ALS Understanding a Devastating Disorder En español Send us ... Sports Concussions Wise Choices How Can I Help ALS Research? If you have ALS, join the National ...

  5. Estomatitis subprótesis en pacientes mayores de 15 años pertenecientes al Policlínico "Raúl Sánchez" Denture-induced stomatitis in patients older than 15 years old. "Raul Sanchez" outpatient clinic

    Directory of Open Access Journals (Sweden)

    Ania Mercedes Silva Contreras

    2012-10-01

    Full Text Available Introducción: la estomatitis subprótesis es una de las alteraciones que con más frecuencia se diagnostica dentro de las patologías bucales, y se define como una alteración de tipo inflamatoria, que puede degenerar en una lesión hiperplásica si no se trata oportunamente. Objetivo: caracterizar el comportamiento de la estomatitis subprótesis en esa población. Material y método: se realizó un estudio observacional, descriptivo y transversal en la población de 15 años y más portadores de prótesis dental parcial o total del Policlínico "Raúl Sánchez" en el municipio Pinar del Río, durante el período comprendido desde febrero del 2008 a febrero del 2010. La muestra quedó constituida por 232 pacientes seleccionados mediante un muestreo por conglomerado trietápico. Para el análisis estadístico de los datos se emplearon medidas de resúmenes para variables cualitativas (porcentaje puntuales y por intervalos de confianza y se implementó, en los casos necesarios, la prueba no paramétrica ji cuadrado con el propósito de determinar se existe correlación entre algunas de las variables. Y se obtuvo un nivel de significación de pIntroduction: denture-induced stomatitis is one of the most frequent alterations diagnosed among the oral-cavity pathologies; it is defined as an inflammatory-type state that can lead to a hyperplastic lesion if it is not properly treated. Objective: to characterize the behavior of denture-induced stomatitis in this population. Material and method: an observational, descriptive and cross-sectional study was conducted in partial and total denture-wearing patients older than 15 years old belonging to "Raul Sanchez" outpatient clinic in Pinar del Rio during February 2008 to February 2010. The sample was comprised of 232 patients chosen by means of three-state conglomeration. To the statistical analysis of data, measures to sum up the qualitative variables (punctual percentage and confidence interval were used, and in the necessary cases, non-parametric chi square test to determine the correlation among some variables. Significance level was p <0,05. Results: the most affected group of ages was 61 years old and older; female sex along with second (II clinical degree prevailed. The most frequent location was the middle and posterior part of palate. Noxious habits due to the continuous use of dentures followed by a deficient oral hygiene predominated. Conclusions: acrylic bases provoked the greatest frequency of alterations. As the time of use increased, together with problems in adjusting the dentures, the risk of suffering from this alteration also increased.

  6. Implementación de un “Proyecto de Vida” como estrategia para enfrentar las consecuencias psicológicas de violencia intrafamiliar en 10 mujeres, entre 18 y 60 años de edad, pertenecientes al Centro de Equidad y Justicia Eloy Alfaro ubicado en la zona sur de Quito, de mayo a agosto de 2015.

    OpenAIRE

    Benalcázar Durán, Carolyn Priscila

    2016-01-01

    This document is captured as a result of the intervention with women as victims of domestic violence, users of services provided by the Centre for Equity and Justice Eloy Alfaro in Quito, with the aim of facing the psychological consequences result thereof, through the implementation of a Life Project, strategy to confront and manage the risks of violence, complemented by reconstituting the social network of each user. The implementation of the project was through eleve...

  7. Evaluación de la anatomía mandibular relacionada con la osteotomía sagital de rama: estudio realizado en mandíbulas humanas adultas secas de cráneos de raza mestiza pertenecientes al departamento de anatomía de la Facultad de Odontología: Universidad Central del Ecuador

    OpenAIRE

    Daniela Mayorga; Diego Patricio Maldonado Coloma

    2015-01-01

    En la actualidad la osteotomía sagital de la rama mandibular representa una de las técnicas quirúrgicas más frecuentes utilizada en cirugía ortognática. Sin embargo desde su aparición ha venido siendo modificada hasta lograr los niveles de estandarización que posee en la actualidad. Dicha técnica ha sido modificada en diseño, extensión e instrumentación. El presente trabajo investigativo ha sido llevado a cabo con la finalidad de prevenir problemas anatómicos y quirúrgicos a través del estudi...

  8. Conjunto de actividades lúdicas para\testimular el desarrollo psicomotriz\ten\tniños(as\tcon\tretraso\tmental severo\tdel\tCentro Psicopedagógico Provincial de Pinar del Río perteneciente al Consejo Popular “10 de octubre”

    Directory of Open Access Journals (Sweden)

    Miriam Suárez Seco

    2009-06-01

    Full Text Available La participación activa del niño(as en el proceso de enseñanza-aprendizaje, a través de la realización de actividades, se debe gestar mediante el empleo de acciones educativas que propicien su desarrollo integral y cumplan con la función social que tiene la Pedagogía Especial. En el  retraso mental severo, se señala  su preparación para incorporarse a la vida social  semi independiente a partir del empleo de tareas generales y específicas relativas a la formación integral, multilateral  y  armónica  del  hombre.  Son  los  adultos  los  máximos responsables   de  dicha preparación.  Resulta  importante dentro  de  la investigación  la  estimulación  del  desarrollo  psicomotriz en  niños(as  con retraso mental severo para lo cual se propone un conjunto de actividades que a  través  del  juego  propicien  el  trabajo  preventivo,  compensatorio  y educativo en estos  niños(as. La investigación se sustenta en las teorías más actualizadas socio-psico pedagógicas acerca de la estimulación psicomotriz en el  niño(as con retraso mental severo. Se  establecen los fundamentos teóricos de  actividades lúdicas para  estimular ese desarrollo de manera que puedan ser aplicados por el personal del centro, la comunidad y la familia con la orientación de un especialista en Cultura Física. Resultando novedosa dada su utilidad para las comunidades de la provincia y el Ministerio de Salud Pública encargados del trabajo de estimulación psicomotriz con estos infantes.

  9. /Cu-Al System

    Science.gov (United States)

    Kish, Orel; Froumin, Natalya; Aizenshtein, Michael; Frage, Nachum

    2014-05-01

    Wettability and interfacial interaction of the Ta2O5/Cu-Al system were studied. Pure Cu does not wet the Ta2O5 substrate, and improved spreading is achieved when relatively a high fraction of the active element (~40 at.% Al) was added. The Al2O3 and AlTaO4 phases were observed at the Ta2O5/Cu-Al interface. A thermodynamic evaluation allowed us to suggest that the lack of wetting bellow 40 at.% Al is due to the presence of a native oxide, which covers the drop. The conditions of the native oxide decomposition and the formation of the volatile Al2O suboxide strongly depend on the vacuum level during sessile drop experiments and the composition of the Cu-Al alloy. In our case, Al contents greater than 40% provides thermodynamic conditions for the formation of Al2O (as a result of Al reaction with Al2O3) and the drop spreading. It was suggested that the final contact angle in the Ta2O5/Cu-Al system (50°) is determined by Ta adsorption on the newly formed alumina interlayer.

  10. Bankole et al (2)

    African Journals Online (AJOL)

    DELL

    Relationships of Clay-filled Channels on the Delta Flanks (Modified after Doust and Omatsola, 1990 and Lawrence et al., 2002). ... and in the Indo-Malaysian area (Germeraad et al.,. 1968). The genus ..... Upper Cretaceous of British Guiana.

  11. Lou Gehrig's Disease (ALS)

    Science.gov (United States)

    ... disease. Who Gets ALS? Although this disease can strike anyone, ALS is extremely rare in kids. According ... home to provide care that the family cannot handle alone. Living With Lou Gehrig's Disease Living with ...

  12. Aussprache als motorische Fertigkeit

    DEFF Research Database (Denmark)

    Bonner, Maria

    2013-01-01

    Authentische Aussprache gilt im Fremdsprachenunterricht als schwer erreichbares Ziel, fremdsprachlicher Akzent wird als nahezu unvermeidbar gesehen. Weder die Hypothese einer kritischen Periode für den Erwerb einer authentischen Aussprache noch das Konzept der Fossilierung im Sprachlernprozess...

  13. Estudio comparativo del rendimiento de las funciones ejecutivas en la corteza prefrontal dorsolateral, orbitofrontal y frontomedial en adolescentes policonsumidores de sustancias psicoactivas, vinculados al sistema de responsabilidad penal en paralelo con adolescentes que no se encuentran bajo esta misma condición

    OpenAIRE

    Diego Alejandro Calle Sandoval; María Alexandra Cuéllar Arias; Paula Andrea Chede García; María Alejandra Quintero Bejarano; Diana Lucía Villamizar Herrera

    2017-01-01

    La presente investigación se realizó bajo una metodología cuantitativa comparativa y de corte transversal, la cual tuvo como objetivo la realización de un estudio del rendimiento de las funciones ejecutivas en la corteza prefrontal dorsolateral, orbitofrontal y frontomedial en adolescentes, entre los 14 y 18 años de edad, policonsumidores de sustancias psicoactivas (SPA) y vinculados al sistema de responsabilidad penal, en paralelo con adolescentes pertenecientes a una institución educativa q...

  14. Amyotrophic lateral sclerosis (ALS)

    Science.gov (United States)

    Lou Gehrig disease; ALS; Upper and lower motor neuron disease; Motor neuron disease ... One out of 10 cases of ALS is due to a genetic defect. The cause is unknown in most other cases. In ALS, motor nerve cells (neurons) waste away ...

  15. Liderazgo transformacional y la facilitación de la aceptación al cambio organizacional

    Directory of Open Access Journals (Sweden)

    Mónica García Rubiano

    2011-01-01

    Full Text Available Objetivo. El objetivo de esta investigación fue evaluar la relación entre el estilo de liderazgo transformacional y la aceptación al cambio organizacional en trabajadores de dos empresas de Bogotá, pertenecientes al sector económico terciario. Método. Es una investigación no experimental con un diseño correlacional. Se aplicó el instrumento de medición al cambio organizacional (IMC a 9 jefes o líderes de cargos medios y el cuestionario liderazgo multifactor (MLQ a 62 operarios. Resultados. En los resultados se evidencian asociaciones significativas y positivas entre efectividad y comunicación en un 0,685. Conclusión. Se concluye que la comunicación y la actitud al cambio son elementos importantes en un proceso de cambio organizacional. Para efectos de futuras investigaciones se podría ampliar la muestra y adaptar el cuestionario de liderazgo transformacional a la población colombiana.

  16. 143 - 148_Makeri et al.

    African Journals Online (AJOL)

    USER

    2015-06-01

    Jun 1, 2015 ... Yuan et al., 2003), antimicrobial activity (Sundarrao et al., 1993; Betancur-Galvis et al., 1999; Takashi et al., 2006), anti-parasitic, anti-malarial activities (Alali et al., 1998; Jaramillo et al., 2000; Luna et al.,. 2005). This study evaluates the antibacterial activity of extract of stem –bark and leaf extracts of Annona.

  17. Abu al-Layth al-Libi

    Science.gov (United States)

    2015-02-01

    success. As an Arab participant acknowledged very early on, “the situation was really harsh. All the brothers were tired,” as they lacked food and... glorious battles that occurred during the early Islamic period.133 He stressed the importance of the battlefield as the path to achieve honor and dignity...diaspora in Waziristan. In the words of Walid Othmani, a French jihadi trained by al-Qa`ida in Waziristan in 2008, “[Al-Libi] was someone well-known and

  18. Pornographie als Metapher

    Directory of Open Access Journals (Sweden)

    Caroline Schubarth

    2010-02-01

    Full Text Available In diesem Artikel werden unterschiedliche metaphorische Verwendungen des Pornografiebegriffs und deren Implikationen untersucht. Während die Existenz von Pornografie der feministischen Anti-Porno-Bewegung als Erklärung für die anhaltende Diskriminierung von Frauen in westlichen Gesellschaften dient, nutzen rechtskonservative Kräfte den Pornografievorwurf als Rechtfertigung für die Zensur von als deviant empfundenen Identitäten und sexuellen Praktiken.

  19. Análisis de la Cooperación Multilateral para la Gestión de biodiversidad en Instituciones Subregionales. Caso de Estudio: Estrategia regional para la conservación y uso Sostenible de recursos en el Amazonas (TCA) y Proyecto Facilitación de financiamiento para negocios de biodiversidad y apoyo al desarrollo de actividades del mercado en la Región Andina (CAN) 2000-2009

    OpenAIRE

    Martín Hilarión, Jorge Luis

    2012-01-01

    Este trabajo de investigación analiza la importancia de la cooperación internacional para la gestión de biodiversidad entregada por el Global Environmental Facilty-GEF, para la conservación y uso sostenible de la biodiversidad en la cuenca Andino-amazónica. Esto a través del estudio de los proyectos de alcance regional financiados a dos instituciones subregionales, el primero, “Estrategia Regional para la Conservación y Uso Sostenible de Recursos en el Amazonas” perteneciente al Tratado de Co...

  20. Contribución de experiencias de vinculación social de las universidades al mejoramiento de la calidad académica y factores que limitan su desarrollo y valoración institucional Contribuição de experiências de vinculação social das universidades para o melhoramento da qualidade acadêmica e fatores que limitam seu desenvolvimento e valorização institucional Contribution of university social outreach experiences to the improvement of academic quality and factors which limit their development and institutional valuation

    Directory of Open Access Journals (Sweden)

    Daniel Mato

    2013-03-01

    Full Text Available Este artículo examina las contribuciones al mejoramiento de la calidad académica logradas mediante experiencias extracurriculares de colaboración entre equipos universitarios y comunidades y organizaciones sociales, así como algunos factores que limitan su mayor desarrollo y valoración por parte de las universidades. La investigación toma como referencia más de doscientas experiencias desarrolladas por equipos de unas cuarenta universidades públicas argentinas, constituidos por docentes y estudiantes de diversas disciplinas, en diversos contextos sociales, las cuales según los casos son conceptualizadas por sus protagonistas en términos de extensión, vinculación social, aprendizaje-servicio, investigación-acción, o voluntariado. El elemento común a todas estas experiencias es que fueron realizadas con apoyo del Programa de Voluntariado Universitario de la Secretaría de Políticas Universitarias, del Ministerio de Educación de la República Argentina. La investigación permite concluir que estos tipos de experiencias no solo contribuyen a mejorar la calidad de vida de sectores sociales, sino, también la formación profesional ofrecida por las universidades, así como la calidad de investigación que realizan dichos equipos. Sin embargo, estos tipos de actividades no suelen contar con valoración institucional. Esto hace aconsejable que las universidades y los organismos de evaluación integren estas modalidades de trabajo como un componente importante de los planes de estudio, y le otorguen mayor valoración en sus políticas de investigación y de carrera docente. Si bien, esta investigación toma como referencia algunas experiencias de universidades argentinas, el problema no se limita a ese país, pues se enmarca en algunos procesos de alcance internacional, que se expresan en ciertas culturas institucionales, en algunas políticas y en la creciente ascendencia de los rankings universitarios internacionales.Este artigo

  1. Alles is al uitgevonden

    NARCIS (Netherlands)

    J.G.M. van Marrewijk (Charles)

    1996-01-01

    textabstractDe voordelen van vrijhandel zijn zeer beperkt, al-thans als we de empirische schattingen van vooraanstaande economen en internationale organisaties mogen geloven. Zo worden de voordelen van liberalisatie voor de Europese Unie geraamd op ongeveer 0,5% van het bnp 1. De door het IMF

  2. Lukman et al. (5)

    African Journals Online (AJOL)

    DELL

    1 Civil Engineering Department, Obafemi Awolowo University, Ile-Ife- Nigeria and Corresponding author. 2Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Samaru, Zaria- Nigeria s Department of Civil Engineering, University of Hafr Al-Batin, Hafr Al-Batin, Saudi Arabia.

  3. Interview als Text vs. Interview als Interaktion

    Directory of Open Access Journals (Sweden)

    Arnulf Deppermann

    2013-09-01

    Full Text Available Das Interview ist nach wie vor das beliebteste sozialwissenschaftliche Verfahren des Datengewinns. Ökonomie der Erhebung, Vergleichbarkeit und die Möglichkeit, Einsicht in Praxisbereiche und historisch-biografische Dimensionen zu erhalten, die der direkten Beobachtung kaum zugänglich sind, machen seine Attraktivität aus. Zugleich mehren sich Kritiken, die seine Leistungsfähigkeit problematisieren, indem sie auf die begrenzte Reichweite der Explikationsfähigkeiten der Befragten, die Reaktivität der Erhebung oder die Differenz zwischen Handeln und dem Bericht über Handeln verweisen. Im Beitrag wird zwischen Ansätzen, die das Interview als Text, und solchen, die es als Interaktion verstehen, unterschieden. Nach dem Text-Verständnis werden Interviews unter inhaltlichen Gesichtspunkten analysiert und als Zugang zu einer vorgängigen sozialen oder psychischen Wirklichkeit angesehen. Das Interaktions-Verständnis versteht Interviews dagegen als situierte Praxis, in welcher im Hier und Jetzt von InterviewerInnen und Befragten gemeinsam soziale Sinnstrukturen hergestellt werden. Anhand ubiquitärer Phänomene der Interviewinteraktion – Fragen, Antworten und die Selbstpositionierung von InterviewerInnen und Befragten – werden Praktiken des interaktiv-performativen Handelns im Interview dargestellt. Ihre Relevanz für die Interviewkonstitution und ihre Erkenntnispotenziale für die Interviewauswertung werden aufgezeigt. Es wird dafür plädiert, die interaktive Konstitutionsweise von Interviews empirisch zu erforschen und methodisch konsequent zu berücksichtigen. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1303131

  4. Universitat popular al Cabanyal

    OpenAIRE

    Ribés Granell, Juan Miguel

    2012-01-01

    La intención es dotar al barrio de un gran espacio verde y de un edificio de interés para los vecinos que enriquezca al Cabanyal, ya que actualmente se encuentra en proceso de degradación. Se pretende desarrollar un proyecto que signifique una mejora en la predisposición del visitante, cubriendo sus necesidades. Al mismo tiempo, se busca crear un espacio arquitectónico que mejore la relación entre las actividades que incluye y su entorno. El proyecto está condicionado por cuatro aspectos fund...

  5. Advanced Light Source (ALS)

    Data.gov (United States)

    Federal Laboratory Consortium — The Advanced Light Source (ALS), a world leader in soft x-ray science, generates light in the wavelengths needed for examining the atomic and electronic structure of...

  6. Taiwo et al (15)

    African Journals Online (AJOL)

    Timothy Ademakinwa

    geometric rise in preference for commercial aquaculture .... content, malondialdehyde level and lipid content of the muscle of the .... other researchers on the gilthead sea bream (Mnari et al., 2007), the .... 23, Orlando, Florida, USA, pp. 18–28.

  7. Okusanya et al (5)

    African Journals Online (AJOL)

    DELL

    rainfall and number of days with rain per month were obtained from Meteorological Institute, Oshodi, Lagos- ... Central and South America, Australia, West. Indies, Africa, (Orwa et al., 2009) and in Florida .... dominant forest tree species. In this ...

  8. Initial Symptoms of ALS

    Science.gov (United States)

    ... have trouble grasping a pen or lifting a coffee cup, while another person may experience a change ... Start your own fundraising event & help create a world without ALS Start an Event Site Map | Press ...

  9. ALS (Amyotrophic Lateral Sclerosis)

    Science.gov (United States)

    ... FDA) has approved the drugs riluzole (Rilutek) and edaravone (Radicava) to treat ALS. Riluzole is believed to ... reverse the damage already done to motor neurons. Edaravone has been shown to slow the decline in ...

  10. Amyotrophic Lateral Sclerosis (ALS)

    Science.gov (United States)

    ... found for ALS. However, the drugs riluzole and edaravone have approved by the Food and Drug Administration ( ... 2-3 months but does not relieve symptoms. Edaravone can slow the clinical decline in daily functioning ...

  11. Obuotor et al (16)

    African Journals Online (AJOL)

    DELL

    fractions and essential oils from the leaves of Eugenia uniflora were investigated on some multidrug resistant pathogens. ... et al., 1987), a reduction in blood pressure measured ..... from E. uniflora suggests high efficacy against this bacterium.

  12. Fakinle et al (11)

    African Journals Online (AJOL)

    DELL

    management issues; there is however a concern about air emissions from the ... poses risks to humans and animals through ... Nigeria have focused on cement industries. (Adejumo et al. ... based MCA which controls the sample holder and.

  13. Ogunyemi et al (17)

    African Journals Online (AJOL)

    DELL

    The results of physicochemical analysis revealed that the concentrations of ... scientific basis for regulating the discharge of potentially ... method for genotocity evaluation using Allium cepaand it ..... al., 2013). National agency for food and drug.

  14. Omotayo et al (4)

    African Journals Online (AJOL)

    DELL

    using biochemical technique and API 20E identification system. The isolates were .... sulphate, phosphate, ammonia and appearance. Heavy metals ... technique as described by Collee et al. (1989) was ..... enzymatic methods. Water Res. 36,.

  15. David et al (12)

    African Journals Online (AJOL)

    DELL

    larger mesophyll cells, xylem tissues, vascular bundles and bundle sheaths than other cultivars. Thus, larger ... mechanism to cope with drought stress. There was an ... where solar radiation is intense (Løe et al., 2007). Most ecological studies ...

  16. Cartas al editor

    Directory of Open Access Journals (Sweden)

    Facultad de Medicina Revista

    1995-10-01

    Full Text Available Con respecto al ensayo "Evaluación del aprendizaje en la educación superior" de la Dra. Análida Pinilla / Ciencia y conciencia en la medicina colombiana / Farmacovigilancia: Una necesidad urgente

  17. Kulturmorphologie als Zivilisationskritik

    DEFF Research Database (Denmark)

    Peters, Rikke Alberg

    2010-01-01

    Der Untergang des Abendlandes wird oft als dasjenige Werk betrachtet, das am tiefsten die national gefärbte Gegenüberstellung von Kultur und Zivilisation in der Zwischenkriegszeit geprägt und propagiert hat. Wie auch bei anderen Autoren der Konservativen Revolution, vor allem bei Thomas Mann und...... Arthur Moeller van den Bruck, tritt der Begriff ‚Kultur’ bei Spengler als normativer Wertbegriff auf, der im Kontrast zu einer degenerierten und seelenlosen Zivilisation steht....

  18. Los números primos. Un largo camino al infinito

    Directory of Open Access Journals (Sweden)

    Javier Rodrigo Hitos

    2011-10-01

    Full Text Available En este artículo se hace un informe de un libro sobre los números primos perteneciente a la colección divulgativa “El mundo es matemático”. Dicha colección incluye otros libros que serán comentados próximamente.

  19. Candidatos no deliberantes: los postulantes al órgano legislativo de Rosario en Facebook

    Directory of Open Access Journals (Sweden)

    Natalia Raimondo Anselmino

    2016-07-01

    Full Text Available Este artículo presenta los resultados de un estudio sobre los posteos publicados por los candidatos al Concejo Deliberante de la Ciudad de Rosario, Argentina, en los muros de sus páginas oficiales en Facebook, durante la campaña electoral local de 2015. Con un diseño exploratorio, se estudiaron las publicaciones de diez candidatos pertenecientes a las diferentes listas, durante 25 días. Para la recopilación del corpus se utilizaron herramientas digitales combinadas con una observación directa y herramientas estadísticas para el procesamiento de los datos. Entre los hallazgos se destacan: el escaso lugar que los políticos otorgan a la polémica con postulantes opositores, el hecho de que los usuarios interactúen con la página oficial de un solo candidato, la baja reiteración en la actividad de comentar de cada usuario y la exigua presencia de respuestas por parte de los candidatos.

  20. Coupled growth of Al-Al2Cu eutectics in Al-Cu-Ag alloys

    International Nuclear Information System (INIS)

    Hecht, U; Witusiewicz, V; Drevermann, A

    2012-01-01

    Coupled eutectic growth of Al and Al 2 Cu was investigated in univariant Al-Cu-Ag alloys during solidification with planar and cellular morphology. Experiments reveal the dynamic selection of small spacings, below the minimum undercooling spacing and show that distinct morphological features pertain to nearly isotropic or anisotropic Al-Al 2 Cu interfaces.

  1. Pornographie als Metapher

    Directory of Open Access Journals (Sweden)

    Caroline Schubarth

    2010-03-01

    Full Text Available In diesem Artikel werden unterschiedliche metaphorische Verwendungen des Pornografiebegriffs und deren Implikationen untersucht. Während die Existenz von Pornografie der feministischen Anti-Porno-Bewegung als Erklärung für die anhaltende Diskriminierung von Frauen in westlichen Gesellschaften dient, nutzen rechtskonservative Kräfte den Pornografievorwurf als Rechtfertigung für die Zensur von als deviant empfundenen Identitäten und sexuellen Praktiken.This article examines different metaphorical uses of the term pornography and the resulting implications. While the existence of pornography for the feminist anti-porno movement serves as factor in the continuing discrimination of women in western societies, conservative powers on the right use the allegation of pornography as a justification for censorship of those identities and sexual practices deemed deviant.

  2. BERKELEY: ALS ring

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    1993-06-15

    Everybody at Lawrence Berkeley Laboratory's Center for Beam Physics is pleased with the rapid progress in commissioning LBL's Advanced Light Source (ALS) electron storage ring, the foundation for this third-generation synchrotron radiation facility. Designed for a maximum current of 400 mA, the ALS storage ring reached 407 mA just 24 days after storing the first beam on 16 March. ALS construction as a US Department of Energy (DOE) national user facility to provide high-brightness vacuum ultra-violet and soft x-ray radiation began in October 1987. One technical requirement marking project completion was to accumulate a 50-mA current in the storage ring. The ALS passed this milestone on 24 March, a week ahead of the official deadline. Once injected, the electron beam decays quasi-exponentially primarily because of interactions with residual gas molecules in the storage-ring vacuum chamber. Eventually, when the pressure in the vacuum chamber with beam decreases toward the expected operating level of 1 nano Torr, it will only be necessary to refill the storage ring at intervals of four to eight hours. At present the vacuum is improving rapidly as surfaces are irradiated (scrubbed) by the synchrotron radiation itself. At 100 mA, beam lifetime was about one hour (9 April)

  3. Alimba et al (5)

    African Journals Online (AJOL)

    USER

    There was significant (p<0.05) increase in erythrocytes, haemoglobin ... for its anti-hemorrhoid and anti-inflammatory properties (Afolabi et al., 2008), ... genome instability which may lead to genetic related diseases ... membrane, behavioral pattern, morbidity and mortality. ..... extracts of Phyllanthus amarus in mice and rats.

  4. Taiwo et al (8)

    African Journals Online (AJOL)

    DELL

    Ife Journal of Science. (2016) vol. 18, no. 4. SPATIAL ... Ogun State. On the contrary, published work in some parts of Nigeria had ..... Prevalence among. Age Group (%). Cause of Infection. (%). Adeoye et al.,. 2007. Lagos. Kato-Katz. A. lumbricoides =29.7. Hookworm = 0.7. T. Trichiura = 18.4. S. stercoralis =0.3. Total =49.1.

  5. Rossie et al

    African Journals Online (AJOL)

    PUBLICATIONS1

    ing onto the torso for bike riders (Blocken et al., 2013) or it might ... designing new vehicles as well as for drawing up specific training ... These models were chosen because they repre- ..... muscles is relevant since the bio-mechanical workload ...

  6. aboagye et al.2

    African Journals Online (AJOL)

    PUBLICATIONS1

    14 Aboagye et al. wide variety of birds, including chickens, by piercing the quills of feathers and gnawing the epidermis. In doing so, they can spread disease and lower .... evolution. Oikos, 97: 223-228. Nordenfors, H. and Chirico, J. (2001). Evalua- tion of a sampling trap for Dermanyssus gal- linae (Acari: Dermanyssidae).

  7. Fadimu et al

    African Journals Online (AJOL)

    coconut water has the potential to increase growth and nutritional value of S. mombin(Linn.) so that S. mombin ... of plant growth and development, including seed maturation and ... et al., 2000). Auxins are primary regulators of plant form while ...

  8. Bello et al (9)

    African Journals Online (AJOL)

    Timade VENTURE

    family Solanaceae and it is one of the largest and ... al.,2004). The taxonomy of this important genus is of ... importance of numerical taxonomic method in ..... SME. SAE. SAM. SNI. SER. SWR. SMA. SGI. -6.4. -4.8. -3.2. -1.6. 0. 1.6. 3.2. 4.8.

  9. Iraq and Al Qaeda

    National Research Council Canada - National Science Library

    Katzman, Kenneth

    2008-01-01

    .... The Administration assertions were derived from U.S. intelligence showing a pattern of contacts with Al Qaeda when its key founder, Osama bin Laden, was based in Sudan in the early to mid-1990s and continuing after he relocated to Afghanistan in 1996...

  10. Iraq and Al Qaeda

    National Research Council Canada - National Science Library

    Katzman, Kenneth

    2007-01-01

    .... The Administration's assertions were derived from U.S. intelligence showing a pattern of contacts with Al Qaeda when its founder, Osama bin Laden, was based in Sudan in the early to mid-1990s and continuing after he relocated to Afghanistan in 1996...

  11. Ojo et al (2)

    African Journals Online (AJOL)

    DELL

    network geometry hence control how the samples' ... generate different permeability curves from wire- ... occupy in the reservoir pore system (McPhee et. ..... Fig.3. Poroperm cross-plot for a homogenous reservoir. Ojo et al.: Rock Type Based ...

  12. Agwu et al (6)

    African Journals Online (AJOL)

    DELL

    Enterobacteriaceae, the bacteria Escherichia coli is regarded as non-halophilic, and cannot tolerate high salt concentrations (Abdulkarim et al., 2009). Nevertheless, some strains of E. coli are halo- tolerant and survive in high salt concentrations. The ability to demonstrate such high osmotic pressure is possibly due to the ...

  13. Dichtung als Erfahrungsmetaphysik

    DEFF Research Database (Denmark)

    Magnusson, Gisli

    Rilkeforskning. Fordi Rilke ikke – uden at gøre vold mod hans værk – kan fortolkes ud fra et traditionelt religiøst verdensbillede, har man fortolket ham som en antimetafysisk mo­dernist. Afhandlingen Dichtung als Erfahrungsmetaphysik. Esoterische und okkultistische Modernität bei R. M. Rilke argumenterer for...

  14. Nucleosynthesis of 26Al

    International Nuclear Information System (INIS)

    Casse, M.

    1986-07-01

    A burst of interest has followed the discovery in the galactic plane of the 1.8 MeV gamma line attached to the decay of 26 Al. We discuss the relative merits of supernovae, novae, massive and supermassive mass-losing stars as potential sources of this expressive isotope

  15. Njukeng et al. + DOI

    African Journals Online (AJOL)

    confo

    3 Institute of Agricultural Research and Development (IRAD), Bambui, North West Province, Cameroon. ... Potato (Solanum tuberosum L.) is an important cash-food crop, which is widely ... production in Africa nearly tripled over the past 35 years ... Njukeng et al, Prevalence of Viruses in Potato Seed Tubers in the North West ...

  16. Comentarios al Salto Social

    Directory of Open Access Journals (Sweden)

    Facultad de Ciencias Económicas

    1995-06-01

    Full Text Available 1. El Plan considera que la política social es un componente central de la estrategia macroeconómica. A diferencia de la administración Gaviria, lo social ha dejado de ser un asunto marginal, es consustancial al desarrollo y, por tanto, se le confiere una dimensión cualitativamente diferente.

  17. Hamid et al (24)

    African Journals Online (AJOL)

    USER

    acne, and eye problems (Diaz-Bolio, 1975). Cnidoscolus aconitifolius roots and leaves have been taken as a laxative, diuretic, circulation stimulant, to increase digestion, stimulant for lactation, and to harden the fingernails (Rowe, 1994; Kuti, and. Torres, 1996). Oyagbemi et al., (2011) reported the proximate analysis and ...

  18. Esuuman et al (17)

    African Journals Online (AJOL)

    big timmy

    ether (Sathe et al., 2002). Various extraction conditions such as pH, solvent types (NaOH, NaCl or Ethanol), solvent concentration, extraction time, solvent/flour ratio, may affect the final properties of the extracted protein. When many factors and interactions affect desired responses in a certain process design, Response.

  19. BERKELEY: ALS ring

    International Nuclear Information System (INIS)

    Anon.

    1993-01-01

    Everybody at Lawrence Berkeley Laboratory's Center for Beam Physics is pleased with the rapid progress in commissioning LBL's Advanced Light Source (ALS) electron storage ring, the foundation for this third-generation synchrotron radiation facility. Designed for a maximum current of 400 mA, the ALS storage ring reached 407 mA just 24 days after storing the first beam on 16 March. ALS construction as a US Department of Energy (DOE) national user facility to provide high-brightness vacuum ultra-violet and soft x-ray radiation began in October 1987. One technical requirement marking project completion was to accumulate a 50-mA current in the storage ring. The ALS passed this milestone on 24 March, a week ahead of the official deadline. Once injected, the electron beam decays quasi-exponentially primarily because of interactions with residual gas molecules in the storage-ring vacuum chamber. Eventually, when the pressure in the vacuum chamber with beam decreases toward the expected operating level of 1 nano Torr, it will only be necessary to refill the storage ring at intervals of four to eight hours. At present the vacuum is improving rapidly as surfaces are irradiated (scrubbed) by the synchrotron radiation itself. At 100 mA, beam lifetime was about one hour (9 April)

  20. Proton irradiation studies on Al and Al5083 alloy

    Science.gov (United States)

    Bhattacharyya, P.; Gayathri, N.; Bhattacharya, M.; Gupta, A. Dutta; Sarkar, Apu; Dhar, S.; Mitra, M. K.; Mukherjee, P.

    2017-10-01

    The change in the microstructural parameters and microhardness values in 6.5 MeV proton irradiated pure Al and Al5083 alloy samples have been evaluated using different model based techniques of X-ray diffraction Line Profile Analysis (XRD) and microindendation techniques. The detailed line profile analysis of the XRD data showed that the domain size increases and saturates with irradiation dose both in the case of Al and Al5083 alloy. The corresponding microstrain values did not show any change with irradiation dose in the case of the pure Al but showed an increase at higher irradiation doses in the case of Al5083 alloy. The microindendation results showed that unirradiated Al5083 alloy has higher hardness value compared to that of unirradiated pure Al. The hardness increased marginally with irradiation dose in the case of Al5083, whereas for pure Al, there was no significant change with dose.

  1. Factores asociados al bajo peso al nacer

    Directory of Open Access Journals (Sweden)

    Georgina J Peraza Roque

    2001-10-01

    Full Text Available El bajo peso al nacer (BPN ha constituido un enigma en la ciencia a través de los tiempos. Múltiples son las investigaciones realizadas acerca de las causas que lo producen y las consecuencias que provoca. Su importancia no solo radica en lo que significa en la morbilidad y la mortalidad infantil, sino que estos niños tienen habitualmente múltiples problemas posteriores. El Programa para la Reducción del BPN señala que los niños nacidos con un peso inferior a los 2 500 g presentan riesgo de mortalidad 14 veces mayor durante el primer año de vida, en comparación con los niños que nacen con un peso normal a término. Dentro de los factores de riesgo del BPN se han encontrado con mayor frecuencia en estudios realizados por diferentes autores, los siguientes: el embarazo en la adolescencia, la desnutrición en la madre, el hábito de fumar, la hipertensión arterial durante el embarazo, la sepsis cervicovaginal, la anemia y los embarazos gemelares, entre otros. Es innegable la influencia que el BPN tiene sobre las futuras generaciones, por lo que debe constituir la diana de los esfuerzos que el médico y la enfermera deben desarrollar en su prevención, sobre todo en la comunidadLow birth weight has been an enigma for Science through times. A lot of research works have been carried out about its causes and consequences. The importance of LBW not only lies in its meaning for infant mortality and morbidity but also in the many problems that low birth weight children regularly face in the future. The program for the reduction of LBW points out that newborns weighing under 2500g have during his/her first year of life a mortality risk 14 times higher than newborns with a normal weight at term. Among the low birth weight risk factors, a number of studies by various authors have frequently found the following; pregnancy at adolescence; undernourishment in mothers, smoking, blood hypertension during pregnancy, cervix-vaginal sepsis; anemia, twin

  2. De GPS al mapa

    Directory of Open Access Journals (Sweden)

    Esteban Dörries

    2016-03-01

    Full Text Available Las coordenadas Lambert obtenidas a partir de mediciones con equipos GPS de mano, llamados a veces navegadores, en ciertos casos confunden al usuario, por diferir claramente de su posición real al ser graficadas en un mapa del Instituto Geográfico Nacional (IGN: Esto puede resolverse con suficiente exactitud mediante una transformación de Molodensky, seguida de la correspondiente proyección cartográfica. Sin embargo, los tres parámetros necesarios para la transformación, supuestamente válidos para Costa Rica, se encuentran en muchas variantes y producen obviamente resultados diferentes. En este trabajo se analizan los fundamentos del problema y sus posibles soluciones, culminando con un estudio comparativo de ocho casos, que permite seleccionar los valores más adecuados para los parámetros.

  3. ALS insertion devices

    International Nuclear Information System (INIS)

    Hoyer, E.; Chin, J.; Halbach, K.; Hassenzahl, W.V.; Humphries, D.; Kincaid, B.; Lancaster, H.; Plate, D.

    1990-11-01

    The Advanced Light Source (ALS), the first US third generation synchrotron radiation source, is currently under construction at the Lawrence Berkeley Laboratory. The low-emittance, 1.5 GeV electron storage ring and the insertion devices are specifically designed to produce high brightness beams in the UV to soft X-Ray range. The planned initial complement of insertion devices includes four 4.6 m long undulators, with period lengths of 3.9 cm, 5.0 cm (2) and 8.0 cm, and a 2.9 m long wiggler of 16 cm period length. Undulator design is well advanced and fabrication has begun on the 5.0 cm and 8.0 cm period length undulators. This paper discusses ALS insertion device requirements; general design philosophy; and design of the magnetic structure, support structure/drive systems, control system and vacuum system. 18 refs., 9 figs., 5 tabs

  4. Adekola et al (7)

    African Journals Online (AJOL)

    Timothy Ademakinwa

    the South Atlantic between Latitudes 31° and 33.5 ... South Atlantic Ocean in the Early Cretaceous, around 136 Ma (Brown et al., 1996; Reeves and de. Wit, 2000 ..... 3244. 3246.70. L o w e r C re ta c e o u s. P e rio d. /E p o c h. 3244. 3246.70. B a ..... moderate counts of forest species such as ... The other, near shore is rich.

  5. Beneficios percibidos por adultos mayores incorporados al ejercicio

    Directory of Open Access Journals (Sweden)

    René Barrios Duarte

    2003-04-01

    Full Text Available El propósito del trabajo es conocer los beneficios que perciben los adultos mayores del sexo femenino, con larga permanencia en el ejercicio, y las relaciones que se establecen entre estos y las variables edad, nivel cultural, tiempo de permanencia y ocupación anterior. Se tomó una muestra de 75 personas pertenecientes a 5 círculos de abuelos de Ciudad de La Habana, con edades entre 56 y 90 años, a los cuales se les aplicó un cuestionario de datos sociodemográficos y una entrevista. Los beneficios percibidos se agruparon en 4 categorías principales: salud, aptitud, psicológicos y sociales. No se encontró relación de dependencia con ninguna de las variables analizadas, aunque sí se encontraron diferencias en categorías específicas. El estudio detalla los beneficios que se pueden percibir con la práctica sistemática en programas destinados al adulto mayor, así como su carácter multidimensional, físico, psicológico y social. Se confirma la importancia del ejercicio y se ofrecen razones para su fomento.The objective of the paper is to find out the benefits that older females receive from practicing exercises for a long time and the relations that are established between these benefits and the variables age, educational level, length of practice and former occupation. A sample of 75 persons from 5 grandfather´s clubs in the City of Havana, aged 56-60 years was administered a socio-demographic questionnaire and an interview. Received benefits were grouped into 4 main categories: health, aptitude, psychological and social. There was no dependence relation with any of the analyzed variables, although differences were found in specific categories. The study detailed the benefits that may be received from systematic physical exercising in programs devoted to older people as well as their multidimensional, physical, psychological and social character. The paper confirmed the importance of exercising and provided reasons for encouraging

  6. Factores asociados al destete precoz

    Directory of Open Access Journals (Sweden)

    Georgina Peraza Roque

    1999-01-01

    Full Text Available Se realiza un estudio descriptivo y transversal a 91 niños nacidos entre el 1ro de enero y el 31 de diciembre de 1993, en los 14 consultorios del médico de la familia, pertenecientes a un Grupo Básico de trabajo, del Policlínico Docente "Antonio Maceo" del municipio Cerro, en la Ciudad de La Habana. Se analizaron factores biopsicosociales relacionados con la madre y con el niño. Se confeccionó la base de datos mediante el programa Foxplus, realizándose comparaciones de media y se empleó el método comparativo de los porcentajes. Predominó el destete precoz en niños nacidos con bajo peso, hijos de madres estudiantes o amas de casa, con nivel de información sobre la lactancia materna bajo; la hipogalactia y "el niño que no se llena" fueron las causas más frecuentes de abandono.A descriptive and cross-sectional study of 91 children that were born between January, 1991, and December, 1993, at 14 family physicians´ offices corresponding to the Basic Working Group of the "Antonio Maceo" Teaching Polyclinic in Cerro municipality, Havana City, was conducted. Biopsychosocial factors related to the mother and the child were analyzed. The data base was made by the Foxplus program. Mean comparisons were also made and the comparative method of percentages was used. Early weaning predominated in children with low birth weight, and in children of student mothers or housewives with low level of information about lactation. The commonest causes for giving up breast feeding were hypogalactia and the fact that "the child is not fully satisfied".

  7. Enseñar a leer en Derecho. Análisis textual de la obra Cartas de batalla, crítica al constitucionalismo colombiano

    Directory of Open Access Journals (Sweden)

    ILENE ROJAS GARCÍA

    2014-01-01

    Full Text Available En el Proyecto Institucional de Competencias Comunicativas de la Corporación Universitaria Rafael Núñez, se adelanta la investigación “Alfabetización académica en la CURN”. Este estudio enfatiza en el lenguaje como medio de acceso: al conocimiento, a la comunidad científica particular de cada programa y a la cultura investigativa. El trabajo se desarrolla a partir de experiencias de aula, desde donde el docente de lengua identifica las particularidades discursivas de los textos académicos usados en el programa de Derecho (en una primera instancia, y desde allí determina, tanto las dificultades para su comprensión, como las estrategias didácticas y lingüísticas que pueden desarrollarse para superarlas bajo un enfoque de lectura inferencial. En la experiencia descrita, se aborda el libro Cartas de batalla, una crítica al constitucionalismo colombiano , su lectura interdisciplinar permitió responder a las necesidades de docentes y estudiantes al brindar herramientas prácticas que les permitan aprender a partir del texto escrito, de forma detallada y analítica. En la actualidad estamos revisando textos pertenecientes a otras asignaturas del programa de Derecho, con algunos avances en la Facultad de Medicina.

  8. Effect of MgO on compositions of the system CaO-Al2O3-Fe2O3. Solubility

    Directory of Open Access Journals (Sweden)

    Palomo, Ángel

    1986-12-01

    Full Text Available Five different compositions belonging to the equilibrium system CaO-Al2O3-Fe2O3 were dopep with a fixed quantity of MgO (6,5% wt. The compositions, which lie in different primary fields of crystallization and in different triangles of compatibility, were submitted to several thermal treatments. Each composition, which had previously been melted, originates in its solidification the aluminates and ferrites which are usual in the interstitial phase of clinker Portland, although they are in different microstructural arrangements. The effect of MgO on the generated microstructures has been shown. Also, the solubility of MgO on the aluminic and ferritic phases has been measured.CCinco composiciones diferentes pertenecientes al sistema de equilibrio CaO-Al2O3-Fe2O3 fueron dopadas con una cantidad fija de MgO (6,5%. Las cinco composiciones, que están situadas sobre diferentes campos primarios de cristalización y/o sobre diferentes triángulos de compatibilidad, fueron sometidas a varios tratamientos térmicos. Cada composición (previamente fundida origina en su solidificación los aluminatos y ferritos habituales en la fase intersticial del clinker portland, aunque ordenados en microestructuras diferentes. Se ha comprobado el efecto del MgO sobre las microestructuras generadas, así como su solubilidad en las fases alumínicas y ferríticas.

  9. Adaptación a la población mexicana del Cuestionario de Orientación al Ego y a la Tarea en el Deporte (TEOSQ

    Directory of Open Access Journals (Sweden)

    Jeanette L\\u00F3pez-Walle

    2011-01-01

    Full Text Available El objetivo del estudio fue analizar las propiedades psicométricas (estructura factorial y fiabilidad del TEOSQ (Task and Ego Orientation in Sport Questionnaire, Duda, 1989 adaptado al contexto mexicano, así como conocer si había diferencias en función del género. El cuestionario fue administrado a 239 deportistas con un rango de edad de 12 a 18 años (M = 14.56, DT = 1.67, participantes en la Olimpiada Nacional Infantil y Juvenil 2008, pertenecientes a 14 diferentes disciplinas deportivas. El análisis factorial confirmatorio apoyó la estructura del instrumento obtenida en otros estudios (Orientación a la Tarea y Orientación al Ego. También se obtuvo una adecuada consistencia interna (a = .85 y a = .85 respectivamente. Respecto al género, las chicas mostraron una mayor orientación a la tarea que los chicos.

  10. Indicadores del bajo peso al nacer en el área de salud del Policlínico Docente "José Martí Pérez" durante un quinquenio

    Directory of Open Access Journals (Sweden)

    Nolvis Argota Matos

    2013-07-01

    Full Text Available Se realizó un estudio descriptivo de los 252 nacidos con bajo peso pertenecientes al área de salud del Policlínico Docente "José Martí Pérez" de Santiago de Cuba, durante el quinquenio 2007-2011, a fin de caracterizarles y determinar cómo se manifestó el bajo peso al nacer en ellos. Se incluyeron las variables: índices de bajo peso al nacer, peso al nacer, distribución y fallecidos según sus formas clínicas, mortalidad del nacido con peso menor de 2 000 g y su supervivencia, causa del nacimiento pretérmino e indicaciones médicas. En la serie el índice de bajo peso aumentó de 6,9 en 2007 a 7,1 en el 2011, predominó como forma clínica el crecimiento intrauterino retardado, la preeclampsia grave fue el diagnóstico médico más frecuente y el mayor número de fallecidos correspondió al grupo con peso menor de 2 000 g. De igual manera, se logró un incremento en la supervivencia de estos recién nacidos, en directa relación con la mejoría ostensible de los indicadores en el período.

  11. Flipped Classroom al laboratori

    OpenAIRE

    Molés Bort, Jaume

    2014-01-01

    L'article presenta una experiència d'aprenentatge de la geologia mitjançant el treball en grups d'experts. Els alumnes han d'indagar i promoure el seu propi aprenentatge per a assolir un repte que se'ls proposa, i consensuar els criteris per els que avaluaran els seus propis resultats mitjançant rúbriques. L'activitat inclou aspectes artístics, TIC i matemàtics, i segueix un esquema similar al de les WebQuest. Els resultats de l'activitat es presenten juntament amb una enquesta realitzada ent...

  12. Teatro al aire libre

    Directory of Open Access Journals (Sweden)

    Philippe Canac

    2016-11-01

    Full Text Available Siendo cada vez más frecuentes y numerosas las peregrinaciones a la basílica de Notre Dame, de Laus (Altos Alpes, su capacidad resultaba hace tiempo insuficiente para acoger a sus peregrinos. Este fue el motivo de crear, en un terreno situado ante el atrio de la basílica, un conjunto, que permitiese celebrar misas al aire libre, ceremonias litúrgicas o representaciones de teatro religioso y que dispusiese de todas las posibilidades para conseguir la libertad del juego escénico.

  13. Architektur als Vermittlung

    OpenAIRE

    Ott, Konrad

    2016-01-01

    Mit Anbruch der Moderne hat sich die Architektur bewußt von den Stilen vorangegangener Epochen losgesagt und sich fortan als Ausdruck einer neuen Kultur, eines neuen Zeitgeistes legitimiert. Der Philosoph Konrad Ott setzt sich mit dem Spannungsfeld zwischen den humanistischen und ästhetischen Ansprüchen der modernen Architektur, wie sie etwa von LeCorbusier formuliert worden sind, und der Realität, die sich etwa in der "Behältnis-Architektur" der Großstädte zeigt, auseinander. Die kritische T...

  14. Salvar al planeta

    OpenAIRE

    Thomas Sancton

    2015-01-01

    El desastre de Exxon Valdez en Canadá (1989)en que derramaron 262 mil barriles de petróleo en las aguas de Alaska cambió la conciencia de los norteamericanos para bien. Comienzan a preocuparse, les gusta ser ecologistas. Se espera que no sea moda o novelería y que asuman el liderazgo para salvar al planeta, pues la deforestación, el incremento de la población, la quema de combustibles fósiles, el calentamiento global, el agujero de ozono sobre la Antártida dejan intuir que la Tierra está en g...

  15. Programa Padres al Colegio

    OpenAIRE

    Viñeglas Fernández, Sandra

    2014-01-01

    El presente trabajo, es un proyecto orientado a la promoción de la salud, en referencia al virus del papiloma humano (VPH), ya que este virus es el causante de una de las infecciones de transmisión sexual más frecuentes en el mundo, el objetivo de este trabajo, es diseñar una serie de intervenciones que contribuyan a sensibilizar e informar a la ciudadanía, para lograr mejorar la prevención del virus del papiloma humano y el cáncer de cérvix. Como ya es sabido, cualquier intervención sobre...

  16. Del Pasadismo al Futurismo

    OpenAIRE

    Agudo-Martínez, M. J.

    2003-01-01

    Uno de los habituales prejuicios a la hora de abordar el análisis del movimiento futurista, al igual que sucede con el constructivismo, es la consideración del contexto político en el que se desarrollaron ambas vanguardias. Sin embargo, y dejando a un lado un enfoque del arte con finalidad política de signo diverso, habría que insistir en el hecho de que posiblemente sean tanto el futurismo italiano como el constructivismo ruso, los movimientos que con mayor entusiasmo se manifestaron, en un ...

  17. Synthesizing (ZrAl3 + AlN)/Mg-Al composites by a 'matrix exchange' method

    Science.gov (United States)

    Gao, Tong; Li, Zengqiang; Hu, Kaiqi; Han, Mengxia; Liu, Xiangfa

    2018-06-01

    A method named 'matrix exchange' to synthesize ZrAl3 and AlN reinforced Mg-Al composite was developed in this paper. By inserting Al-10ZrN master alloy into Mg matrix and reheating the cooled ingot to 550 °C, Al and Mg atoms diffuse to the opposite side. As a result, liquid melt occurs once the interface areas reach to proper compositions. Then dissolved Al atoms react with ZrN, leading to the in-situ formation of ZrAl3 and AlN particles, while the Al matrix is finally replaced by Mg. This study provides a new insight for preparing Mg composites.

  18. Appiah-Adjei et al

    African Journals Online (AJOL)

    PUBLICATIONS1

    ing, sale of automobile spare parts, and metal fabrication. Some of these activities generate huge ... Keywords: Groundwater quality, pollution, waste disposal, Suame, Ghana ... of fertilizers (Chen et al., 2007; Parris, 2011;. Shen et al., 2011), ...

  19. AL-USRCRN Station Information

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Documentation of United States Alabama Regional Climate Reference Network (AL-USRCRN) installations in 2006. Installations documented are for AL-USRCRN pilot project...

  20. Derivados vinculados al seguro.

    Directory of Open Access Journals (Sweden)

    De Paz Cobo, Sonia

    2003-01-01

    Full Text Available El presente trabajo tiene como objetivo la presentación de los derivados financieros como instrumentos de cobertura de los riesgos del seguro, así como de los principales proyectos que se desarrollan a través de los mismos, como por ejemplo los derivados sobre el clima. Hay que tener presente las pérdidas multimillonarias ocasionadas en casos como el de la banca Baring’s, o el de Orange County, por citar algunas, que si bien ciertos autores afirman que están en relación directa con el uso de estos productos, no podemos olvidar que los instrumentos derivados se desarrollaron con el objetivo principal de proteger al usuario de la posible volatilidad del activo subyacente. Ya en la industria aseguradora los derivados vinculados a tal actividad son instrumentos donde el pago se condiciona a la ocurrencia de su suceso de siniestro, o serie de sucesos múltiples que disparen las pérdidas. Tras el repaso efectuado y la descripción que este tipo de instrumentos puede tener en la gestión del riesgo por parte de la industria aseguradora, concluiremos con la exposición de las relaciones con el reaseguro tradicional así como una breve referencia al futuro de este tipo de instrumentos

  1. Bukti Kebenaran Al-quran

    OpenAIRE

    Aliyah, Sri

    2015-01-01

    Al Quran is the greatest miracles of Muhammad SAW as the direction of humankind in order to reach eternal happiness. Scientific evidences show that Al Quran has the truth massages, although it was released far before the finding of modern sciences. The researches continue to study the truth of Al Quran an it revealed the historical fact.

  2. Salvar al planeta

    Directory of Open Access Journals (Sweden)

    Thomas Sancton

    2015-01-01

    Full Text Available El desastre de Exxon Valdez en Canadá (1989en que derramaron 262 mil barriles de petróleo en las aguas de Alaska cambió la conciencia de los norteamericanos para bien. Comienzan a preocuparse, les gusta ser ecologistas. Se espera que no sea moda o novelería y que asuman el liderazgo para salvar al planeta, pues la deforestación, el incremento de la población, la quema de combustibles fósiles, el calentamiento global, el agujero de ozono sobre la Antártida dejan intuir que la Tierra está en grave peligro. Se recomienda entonces optar por un desarrollo sustentable.

  3. COMENTARIO AL CASO PINOCHET

    Directory of Open Access Journals (Sweden)

    Alberto Contreras Clunes

    2002-01-01

    Full Text Available El fallo en el caso Pinochet tiene distintas formas de ser analizado. De partida, desde un punto de vista político, también constitucional, del derecho penal. Sin embargo, nos abocaremos al estudio desde el punto de vista procesal, en especial a lo referido al Debido Proceso. Para ello se analizará los presupuestos, la solución dada por la Excma. Corte Suprema y las consecuencias del mismo. Además, se criticará la solución dada, desde la óptica de las garantías procesales del imputado, contenidas en el nuevo proceso penal y lo dispuesto en la Constitución y la Convención Americana de Derechos Humanos. Finalmente, se argumentará en favor de una interpretación finalista y armónica de la Constitución y los tratados internacionales de derechos humanos.The verdict of the Pinochet Case has different ways of being analyzed: from the political, the constitutional, and the penal law points of view. However, we will approach this study from the legal point of view, especially to that referred to as the Proper Process. To do this, the budgets, the solution given by the Most Excellent Supreme Court, and its consequences will be analyzed. Furthermore, the given solution will be criticized from the point of view of the legal guarantees of the accused contained in the new penal process and what is contained in the Constitution and in the American Convention of Human Rights. In conclusion, we will argue in favor of a final and harmonious interpretation of the Constitution and the international agreement of human rights.

  4. Carta al Editor

    Directory of Open Access Journals (Sweden)

    Darío Maldonado Romero

    1991-03-01

    Full Text Available

    Bogotá, 01 de Agosto de 1990
    Señores
    Miembros del Consejo Editorial
    Academia Nacional de Medicina
    E.S.D.

    Señores doctores:

    Con toda consideración y respeto me permito agregar algunas anotaciones al escrito del Académico Alberto Cárdenas Escobar, aparecido en el No. 22 de Medicina, para destacar algunos aspectos de la personalidad del doctor Alberto Schweitzer galardonado con el Premio Nobel de la Paz.

    A los 30 años de edad tomó una decisión dramática: Estudiar Medicina para trabajaren el África Ecuatorial. Cuando terminó sus investigaciones sobre enfermedades tropicales y sus prácticas hospitaLarias, partió para el Gabon al pequeño pueblo de Lambarené. La tarea era desconsoladora; La atención médica había que prestarla al aire libre; iba con su esposa, como enfermera y amanuense, y no se encontraba ni un intérprete, ni un ayudante. Cuando le llegaron la medicina y el equipaje hubo que acomodarlos en un viejo gallinero abandonado; el calor era insoportable y le venían enfermos de varias millas a la redonda, a pie o en Canoas.

    Las enfermedades más difundidas eran Malaria, Disentería, estreptococias y la más mortífera, la Tripanosomiasis Gambiense, para la que empezaban a llegar medicinas nuevas eficaces y las medidas preventivas como el suministro de agua potable y enmallado de ventanas impedían muchas contaminaciones.

    Pero la que causaba mayores dificultades y trabajo era la Mycobacteriasis Anestesiante, incurable, de difícil diagnóstico, afectando a varios miembros de la misma familia, de aspecto horripilante, con complicaciones neuríticas muy dolorosas, frecuente ceguera, e invalideces y procesos erisepelatososacrotéricos, que exigían acompañante para el cambio y lavado de vendas y suministro de alimentos.

    A menos de un año de

  5. Idaaratu al Wahdah al Namthiyah li at Tathwiri al Tarbiyah al Islamiyah

    Directory of Open Access Journals (Sweden)

    Ahmad Danusiri

    2016-04-01

    Full Text Available Islam, through the Quran, proclaims that its mission includes the teachings to the whole universe, Everything in the universe is maintained by Islam, and none of the symptoms are ignored. The revelations also include the traditions of the Prophet that are authentic (shahih and good (hasan in quality. Both the Quran and maqbulah hadiths are accepted by Muslims on the basis of faith. When some experts of UIN Walisongo from various disciplines try to understand the sacred words of these two resources, their understanding continues, reaching the paradigm of the unity of science which essentially unites the normative, social, and natural sciences. The effect of this paradigm has brought up an issue for the author. Is there any hadiths or Prophetic traditions that can be used as a grand theory in the management disciplines of Islamic education.To address this issue, the authors conducted a literature research with the title Development of Islamic Education Management Module. Sources of data were focused on nine books of Hadiths : Sahih al-Bukhari, Sahih al-Muslim, Sunan Abu Dawud, Sunan at-Turmudzi, Sunan an-Nasai, Sunan Ibn Majah, Sunan ad-Darimi, Muwatta Malik, and Musnad Imam Ahmad bin Hanbal in the form of digital data Lidwa Reader Software Book 9 Imam Hadith. The findings of the study stated that the meaning of the word Rabb includes: creating, nurturing, maintaining, teaching, educating, and organizing. Thus, in an academic term, the word Rabb implies a manager or leader. Meanwhile, in the concept of comprehensive manager it contains at least 14 nomenclature denotations: planning, responsibility, organization, coordination, system of employee payroll, learning, resources, humanity, principle of making it easier for the manager to the employee, motivated to achieve optimal performance, preventing unproductivity, education participation, institutional costs, monitoring, and evaluation system. Each nomenclature has numerous hadiths that could serve

  6. Rehabilitación integral y tolerancia al ejercicio físico en escolares asmáticos severos

    Directory of Open Access Journals (Sweden)

    . Héctor Alejandro Cruz Oliver

    1995-04-01

    Full Text Available Se realizó un estudio en 99 escolares asmáticos severos, incluidos en un programa de rehabilitación integral en el centro para niños asmáticos de la Ciudad de los Pioneros "José Martí" en Tarará, durante el curso escolar 1991-1992. A todos los escolares se les sometió antes de comenzar el programa, a una prueba de tolerancia al ejercicio físico mediante la carrera libre, y acorde con los resultados de ésta se clasificaron en 2 grupos; grupo I, con asma inducida por el ejercicio (AIE y grupo II, sin AIE. Al finalizar el programa de rehabilitación al grupo I se le sometió nuevamente a la prueba de tolerancia al ejercicio físico. Todos los escolares se evaluaron mediante la espirometría en condiciones basales antes del programa de rehabilitación y al finalizar éste. En 55 escolares (55,5 % se constató la presencia inicial de AIE. Al finalizar el programa de rehabilitación sólo en 23 de ellos se mantuvo este fenómeno. Con excepción de un escolar perteneciente al grupo I el resto de los niños toleraron sin dificultad las actividades físicas programadas. En relación con los parámetros de función respiratoria no se hallaron diferencias significativas en ninguno de ellos, cuando se compararon ambos grupos entre sí antes del programa de rehabilitación, y después de él. Comparando cada grupo consigo mismo sólo se observó un incremento significativo del flujo máximo medio (MMF en ambos grupos, lo que reflejó una disminución del componente obstructivo bronquial periférico.

  7. Malamih al-Ashwat al-'Arabiyyah wa Makharijaha

    Directory of Open Access Journals (Sweden)

    Amrah Muhammad Kasim

    2015-12-01

    Full Text Available This writing discusses on al-ashwat al-‘arabiyyah that is known with “phonetic” term. It talks and interprets makharij al-huruf or place for producing sounds and also processing production of sounds by parts of mouth in Arabic language. The problems of sounds and its systems in Arabic language have been conducted by the scholars of al-ashwat al-‘arabiyyah attractively, neatly, and detail and gotten ahead the phonetic western scholars. Part of their analysis results formulate the study about al-ashwat al-sakinah (al-Shamit is known with vocal and consonant sounds in research questions shawait – shawamit. Ibnu Jinni has formulated “harakat”(wowel in Arabic language and dimension of letter  mad and liyn on alif  letter - waw - ya’ (ا و ي, from these letters create  harakat fathah, dammah, and kasrah. Moreover, in this writing also exist the description of hija’i letters and its makhraj that are correct from parts of mouth and the unity of coordinative sounds that produce sounds in morphemes arrangement, in one word that produces meaning. The result of phonological study has divided al-ashwat to be kinds of sound like the pronounced sounds, produced sounds from mouth, and heard sound.

  8. Morton et al. Reply

    Science.gov (United States)

    Morton, Douglas C.; Nagol, Jyoteshwar; Carabajal, Claudia C.; Rosette, Jacqueline; Palace, Michael; Cook, Bruce D.; Vermote, Eric F.; Harding, David J.; North, Peter R. J.

    2016-01-01

    Multiple mechanisms could lead to up-regulation of dry-season photosynthesis in Amazon forests, including canopy phenology and illumination geometry. We specifically tested two mechanisms for phenology-driven changes in Amazon forests during dry-season months, and the combined evidence from passive optical and lidar satellite data was incompatible with large net changes in canopy leaf area or leaf reflectance suggested by previous studies. We therefore hypothesized that seasonal changes in the fraction of sunlit and shaded canopies, one aspect of bidirectional reflectance effects in Moderate Resolution Imaging Spectroradiometer (MODIS) data, could alter light availability for dry-season photosynthesis and the photosynthetic capacity of Amazon forests without large net changes in canopy composition. Subsequent work supports the hypothesis that seasonal changes in illumination geometry and diffuse light regulate light saturation in Amazon forests. These studies clarify the physical mechanisms that govern light availability in Amazon forests from seasonal variability in direct and diffuse illumination. Previously, in the debate over light limitation of Amazon forest productivity, seasonal changes in the distribution of light within complex Amazon forest canopies were confounded with dry-season increases in total incoming photosynthetically active radiation. In the accompanying Comment, Saleska et al. do not fully account for this confounding effect of forest structure on photosynthetic capacity.

  9. Alternativen als Programm

    Directory of Open Access Journals (Sweden)

    Paulina Dobroć

    2018-03-01

    Full Text Available Der vorliegende Artikel soll einen Beitrag zu theoretischen Überlegungen einer Technikfolgenabschätzung (TA der Alternativen leisten. Ausgehend von der Annahme, dass TA seit ihrer Entstehung den Anspruch auf die Entwicklung von (technischen Alternativen erhoben hat, wird hier der Versuch unternommen, die Rolle der TA im Rahmen aktueller Innovationsprozesse zu reflektieren und (neu zu definieren. Dies scheint vor allem im Hinblick auf aktuelle gesellschaftliche Herausforderungen notwendig. Zu diesem Zweck wird eine Grundannahme Lothar Hacks über das Verhältnis von Gesellschaft und Technik herangezogen. Seine Annahme besagt, dass die kontinuierliche Überführung von sozialen Problemen und Leitbildern in enge technische Lösungsansätze in hochindustrialisierten Ländern dominant und Teil der aktuellen gesellschaftlichen Probleme ist. Diese These wird im vorliegenden Artikel im Hinblick auf einen Perspektivenwechsel als Ausgangspunkt eines zukünftigen Forschungsprogramms der TA fruchtbar gemacht. Hierbei bildet das Denken in Alternativen von gesellschaftlichen Zukünften den zentralen Fokus.

  10. Undulators at the ALS

    International Nuclear Information System (INIS)

    Hoyer, E.; Akre, J.; Chin, J.

    1994-07-01

    At Lawrence Berkeley Laboratory's (LBL) Advanced Light Source (ALS), three 4.6 m long undulators have been completed, tested and installed. A fourth is under construction. The completed undulators include two 5.0 cm period length, 89 period devices (U5.0s) which achieve a 0.85 T effective field at a 14 mm minimum gap and a 8.0 cm period length, 55 period device (U8.0) that reaches a 1.2 T effective field at a 14 mm minimum gap. The undulator under construction is a 10.0 cm period length, 43 period device (U10.0) that is designed to achieve 0.98 T at a 23 mm gap. Undulator magnetic gap variation (rms) is within 25 microns over the periodic structure length. Reproducibility of the adjustable magnetic gap has been measured to be within +/- 5 microns. Gap adjusting range is from 14 mm to 210 mm, which can be scanned in one minute. The 5.1 m long vacuum chambers are flat in the vertical direction to within 0.74 mm and straight in the horizontal direction to within 0.08 mm over the 4.6 m magnetic structure sections. Vacuum chamber base pressures after UHV beam conditioning are. in the mid 10 -11 Torr range and storage ring operating pressures with full current are in the low 10 -10 Torr range. Measurements show that the uncorrelated magnetic field errors are 0.23%, and 0.20% for the two U5.Os and the U8.0 respectively and that the field integrals are small over the 1 cm by 6 cm beam aperture. Device description, fabrication, and measurements are presented

  11. Diffusion-induced quadrupole relaxation of 27Al nuclei in dilute Al-Ti, Al-Cr, Al-Mn, and Al-Cu alloys at high temperatures

    International Nuclear Information System (INIS)

    Bottyan, L.; Beke, D.L.; Tompa, K.

    1983-01-01

    The temperature dependence of the laboratory frame spin-lattice relaxation time of 27 Al nuclei is measured in 5N Al and in dilute Al-Ti, Al-Cr, Al-Mn, and Al-Cu alloys at 5.7 and 9.7 MHz resonance frequencies. The relaxation in pure aluminium is found to be purely due to the conduction electrons. An excess T 1 -relaxation contribution is detected in all Al-3d alloys investigated above 670 K. The excess relaxation rate is proportional to the impurity content and the temperature dependence of the excess contribution is of Arrhenius-type with an activation energy of (1.3 +- 0.3) eV for all of the investigated alloys. The relaxation contribution is found to be quadrupolar in origin and is caused by the relative diffusional jumps of solute atoms and Al atoms relatively far from the impurity. (author)

  12. Corporate volunteerism and corporate social responsibility: a chance to counter the stigma of persons affected by a serious mental illness and to promote their labour integration

    Directory of Open Access Journals (Sweden)

    Carlos De Fuentes Garcia

    2014-12-01

    Full Text Available De Fuentes, C. et al. (2014: “El voluntariado corporativo y la responsabilidad social empresarial: una oportunidad en la lucha contra el estigma y el impulso de la inserción laboral de las personas con trastorno mental grave”, Revista Española de Discapacidad, 2 (2: 247-253.

  13. Deformation mechanisms of nanotwinned Al

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Xinghang [Texas A & M Univ., College Station, TX (United States)

    2016-11-10

    The objective of this project is to investigate the role of different types of layer interfaces on the formation of high density stacking fault (SF) in Al in Al/fcc multilayers, and understand the corresponding deformation mechanisms of the films. Stacking faults or twins can be intentionally introduced (via growth) into certain fcc metals with low stacking fault energy (such as Cu, Ag and 330 stainless steels) to achieve high strength, high ductility, superior thermal stability and good electrical conductivity. However it is still a major challenge to synthesize these types of defects into metals with high stacking fault energy, such as Al. Although deformation twins have been observed in some nanocrystalline Al powders by low temperature, high strain rate cryomilling or in Al at the edge of crack tip or indentation (with the assistance of high stress intensity factor), these deformation techniques typically introduce twins sporadically and the control of deformation twin density in Al is still not feasible. This project is designed to test the following hypotheses: (1) Certain type of layer interfaces may assist the formation of SF in Al, (2) Al with high density SF may have deformation mechanisms drastically different from those of coarse-grained Al and nanotwinned Cu. To test these hypotheses, we have performed the following tasks: (i) Investigate the influence of layer interfaces, stresses and deposition parameters on the formation and density of SF in Al. (ii) Understand the role of SF on the deformation behavior of Al. In situ nanoindentation experiments will be performed to probe deformation mechanisms in Al. The major findings related to the formation mechanism of twins and mechanical behavior of nanotwinned metals include the followings: 1) Our studies show that nanotwins can be introduced into metals with high stacking fault energy, in drastic contrast to the general anticipation. 2) We show two strategies that can effectively introduce growth twins in

  14. Deformation mechanisms of nanotwinned Al

    International Nuclear Information System (INIS)

    Zhang, Xinghang

    2016-01-01

    The objective of this project is to investigate the role of different types of layer interfaces on the formation of high density stacking fault (SF) in Al in Al/fcc multilayers, and understand the corresponding deformation mechanisms of the films. Stacking faults or twins can be intentionally introduced (via growth) into certain fcc metals with low stacking fault energy (such as Cu, Ag and 330 stainless steels) to achieve high strength, high ductility, superior thermal stability and good electrical conductivity. However it is still a major challenge to synthesize these types of defects into metals with high stacking fault energy, such as Al. Although deformation twins have been observed in some nanocrystalline Al powders by low temperature, high strain rate cryomilling or in Al at the edge of crack tip or indentation (with the assistance of high stress intensity factor), these deformation techniques typically introduce twins sporadically and the control of deformation twin density in Al is still not feasible. This project is designed to test the following hypotheses: (1) Certain type of layer interfaces may assist the formation of SF in Al, (2) Al with high density SF may have deformation mechanisms drastically different from those of coarse-grained Al and nanotwinned Cu. To test these hypotheses, we have performed the following tasks: (i) Investigate the influence of layer interfaces, stresses and deposition parameters on the formation and density of SF in Al. (ii) Understand the role of SF on the deformation behavior of Al. In situ nanoindentation experiments will be performed to probe deformation mechanisms in Al. The major findings related to the formation mechanism of twins and mechanical behavior of nanotwinned metals include the followings: 1) Our studies show that nanotwins can be introduced into metals with high stacking fault energy, in drastic contrast to the general anticipation. 2) We show two strategies that can effectively introduce growth twins in

  15. Consolidación del campo teatral bogotano. Del Movimiento Nuevo Teatro al teatro contemporáneo

    Directory of Open Access Journals (Sweden)

    Janeth Aldana

    2008-01-01

    trabajo de investigación sobre la consolidación y emergencia del campo teatral bogotano.  Aquí se explora particularmente la incidencia del denominado Movimiento Nuevo Teatro, el cual se desarrolló en América Latina desde los años cincuenta hasta los años setenta del siglo pasado. En Colombia, éste va a cobrar singular importancia generando, aun hoy, álgidos debates sobre el verdadero papel de la creación colectiva y la organización en grupos en cuanto a la transformación de la dramaturgia, y la actividad teatral en el país. Tales debates se toman aquí como otro dato más, junto con el discurso de los demás agentes pertenecientes al campo a través de los libros de historia sobre el teatro colombiano y los textos teóricos de varios de sus protagonistas. La información se complementa con la suministrada por revistas especializadas y por las instituciones oficiales encargadas del área de cultura. Al final, una de las conclusiones centrales es que se puede hablar de un campo teatral en Bogotá gracias a la autonomía suficiente que se obtuvo por tres búsquedas puntuales: la adquisición de una sala propia, la formación del público y la creación de una dramaturgia nacional.

  16. SANANDO AL SANADOR

    Directory of Open Access Journals (Sweden)

    Juan Pablo Acuña, Dr.

    2017-09-01

    Full Text Available RESUMEN: La dependencia o adicción a sustancias de uso profesional es un problema que puede afectar gravemente a médicos de diferentes especialidades. En la anestesiología hay mayor riesgo de dependencia a opioides e hipnóticos que en otras especialidades y puede llegar a afectar al 1% de los médicos anestesiólogos.La fisiopatología del trastorno por uso de sustancias tiene hechos comunes para diferentes drogas. Interactúan la vulnerabilidad genética y factores psicosociales como predisponentes y los efectos psicobiológicos de la sustancia como factor gatillante. En el caso de los anestesiólogos, la sustancia se encuentra en el lugar de trabajo y por lo tanto, el individuo está constantemente expuesto.Una disfunción previa del sistema de recompensa en el circuito mesocorticolímbico o causada por la exposición a la sustancia adictiva es la piedra central de la neurobiología de las adicciones. Los opioides, anfetaminas, canabinoides, alcohol y nicotina, son algunas de las sustancias exógenas que activan el circuito y causan inicialmente un efecto hedónico que reforzará la conducta por repetir la experiencia. Con el tiempo la interacción con la droga será para evitar los síntomas de abstinencia.Dada la exposición laboral de los anestesiólogos, es necesario prevenir, detectar y tratar precozmente a quienes están abusando de sustancias durante su ejercicio profesional.Por las características de estos fármacos, aspectos psicológicos especiales de los médicos y el contexto laboral se hace necesario un tratamiento especializado y en anestesiólogos la reinserción laboral debe ser un proceso controlado, gradual y con un seguimiento prolongado. SUMMARY: Prescription drugs dependence seriously impairs doctors from differents fields of medicine. Anesthesiology has greater risk than other specialties to opioids and hypnotics dependence, with prevalence up to 1%.Substances use disorder has common mechanisms of disease regardless

  17. Plan de actividades físico - recreativas para contribuir a la incorporación de los adultos mayores al círculo de abuelos de la comunidad Moralito, municipio Colón, Estado de Zulia

    Directory of Open Access Journals (Sweden)

    Yariel González Galván

    2011-03-01

    Full Text Available La población adulta mayor de la comunidad Moralito, municipio Colón, estado de Zulia, en la República Bolivariana de Venezuela, muestra una baja incorporación a la práctica del ejercicio físico en esta etapa de la vida, por lo que se hace necesario incrementar la participación de estas personas en los Círculos de Abuelos; por tanto, se ha tomado como muestra para la realización de este trabajo la comunidad perteneciente al módulo de salud ubicado en la zona urbana de Moralito. Para hacer el estudio se tuvo en cuenta la cantidad de personas de la tercera edad que residen en la comunidad para aplicar un diagnóstico inicial partiendo particularmente de las necesidades de cada uno de ellos, de ahí que se aplicaron entrevistas a los incorporados al Círculo de Abuelos, que son los menos, a los no incorporados, así como al médico que trabaja en el módulo de salud, estas sirvieron de apoyo para obtener una información más detallada y desarrollar la investigación. Además se realizaron observaciones a las clases del Círculo de Abuelos de la comunidad seleccionada.

  18. Programa de actividades recreativas comunitarias para la ocupación del tiempo libre de los adolescentes pertenecientes a la Circunscripción No. 34 del Consejo Popular “Ceferino Fernández” del Municipio Pinar del Río

    Directory of Open Access Journals (Sweden)

    Arturo Aguilar Hernández

    2009-12-01

    Full Text Available Las características comunitarias de cada sector se hacen saber a partir de los principales acontecimientos cognoscitivos y psíquicos, puestos en prácticas después en las diferentes vivencias Y representan además un vínculo positivo. La intervención comunitaria, se ha impuesto en nuestros días como una necesidad, pues el desarrollo comunitario en gran medida implica el desarrollo social. Los estudios acerca del empleo del tiempo libre ocupan un lugar significativo en la investigaciones debido a la importancia económica de los productos y servicios consumibles y la satisfacción de las crecientes necesidades de la población y en un sentido mas general, al relevante papel que desempeña el correcto empleo del tiempo libre como el elemento importante en la formación de la personalidad del hombre nuevo. Estas transformaciones se manifiestan en todos los aspectos del modo de vida y provocan cambios en los hábitos, cultura e ideología de las masas acerca de cómo emplear su tiempo libre en otras actividades de su gusto y preferencia cuestiones estas que se carecen en la comunidad objeto de investigación lo cual provoca un grupo de manifestaciones de carácter negativo en los adolescentes propiciando a su vez transformaciones sociales de carácter individual y colectivo. En este sentido es imprescindible el estudio de la ocupación de la población para dotar a su tiempo libre de un contenido cada vez mas rico implementado por el desarrollo de las actividades físicas recreativas de manera sana propiciando un estilo de vida saludable capaz de transformar diferentes patrones de conducta relacionados con su personalidad.

  19. 117 - 122 Omoniyi et al

    African Journals Online (AJOL)

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    Bayero Journal of Pure and Applied Sciences, 8(2): 117 – 122. Received: ... FOLLOWING MILD EXPOSURE. Omoniyi ... People who work with materials containing mere traces .... obscured physical effect in the animal model (Omoniyi et al.

  20. 150 - 159_Salisu et al.

    African Journals Online (AJOL)

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    of interaction occurring in this natural system (Dube et al.,2000). Many soils ... minerals including gold, copper, zinc etc. The Zamfara ... contain unusually problematic concentration of lead and other ..... Copper (Cu) is an essential micronutrient ...

  1. 142 - 149_Safiyanu et al.,

    African Journals Online (AJOL)

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    insecticides producing industries whose daily challenge is minimization of malaria burden across the globe. Larvae of ... emerge and currently represents the major threat to ..... eastern Thailand (Pimsamurna et al., 2009) and resistance to ...

  2. 24 - 28_Suleiman et al.

    African Journals Online (AJOL)

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    larval instar. Keywords: Antlion, Construction, Density, Distribution, Hunger, Larvae, Pit. INTRODUCTION ... 1987), moisture (Gotelli 1993; Morrison 1994), and shade (scharfet al. .... Pit building was virtually the same in all three instar, and no ...

  3. Laniyan et al (1).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    Pollution of groundwater has become a major environmental problem. Anthropogenic ... drinking water comes from aquifers (Forster et al.,. 1998). Aquifers ... improvement in public health. ..... Arsenic (As): Chemical properties,. Health and ...

  4. Radiation detection with Nb/Al-AlOx/Al/Nb superconducting tunnel junctions

    International Nuclear Information System (INIS)

    Matsumura, Atsuki; Takahashi, Toru; Kurakado, Masahiko

    1992-01-01

    Superconductor radiation detectors have the possibility of 20-30 times better energy resolution than that of a high resolution Si detector. We fabricated Nb/Al-AlOx/Al/Nb superconducting tunnel junctions with low leakage current. X rays were detected with large area junctions of 178x178 μm 2 . High energy resolution of 160 eV for 5.9 keV was obtained. We also fabricated series connected junctions which covers a rather large area of 4x4 mm 2 . α particles injected into the rear substrate were detected using nonthermal phonons induced by the radiations in the substrate. (author)

  5. DIAGNÓSTICO DEL VOLUNTARIADO CORPORATIVO EN LA EMPRESA ESPAÑOLA

    Directory of Open Access Journals (Sweden)

    Dolores Gallado Vázquez

    2010-12-01

    Full Text Available After detecting the incipient stage of development of corporate volunteering in the countries of our environment, this work reflects the growing interest that this practice is beginning to offer also in our country. Once the notion and the basics of corporate volunteering are presented, we make a special emphasis on its ability to bind the company with its agents of interest, mainly in its strategic capacity and not philanthropic. The diagnostic survey carried out allows us to shape the perceptions of Spanish managers regarding the potential benefits and costs of corporate volunteering. The paper concludes with recommendations for its implementation and management.

  6. BIENESTAR PSICOLÓGICO: ADULTOS MAYORES ACTIVOS A TRAVÉS DEL VOLUNTARIADO

    OpenAIRE

    FERRADA MUNDACA,LESLIE; ZAVALA GUTIÉRREZ,MERCEDES

    2014-01-01

    Objetivo: Comparar el nivel de bienestar psicológico de adultos mayores voluntarios del programa "Asesores Seniors" del Servicio Nacional del Adulto Mayor, Región del Bío-Bío, Chile, y adultos mayores no voluntarios, usuarios de un Centro de Salud Familiar de la misma región. Material y método: Corresponde a un estudio descriptivo - comparativo. La población del estudio corresponde a 60 adultos mayores, 30 voluntarios en un programa gubernamental y 30 no voluntarios usuarios de un Centro de S...

  7. Al clamor de les vuvuzeles

    Directory of Open Access Journals (Sweden)

    Javier Olivera Betrán

    2010-09-01

    Full Text Available El Mundial de Futbol de Sud-àfrica ha situat l’Àfrica al mapa mundial i ha mostrat al món el triomf de l’estil de futbol d’Espanya basat en la col·lectivitat, l’esperit d’equip, la humilitat, la cohesió interna i el joc bonic. L’organització africana, seriosa i eficaç, ha sabut mobilitzar i il·lusionar la població del país que ha participat en el mundial des de l’orgull de ser africà, amb l’esperit alegre, festiu i també reivindicatiu de la gent de l’Àfrica. Aquest esdeveniment suposa el llançament de la marca “Sud-àfrica” al món amb un avís clar d’optar a l’organització d’uns primers Jocs Olímpics a Àfrica (potser els de 2020. S’obre una finestra d’esperança al segle xxi per al continent perdut de la mà de l’esport espectacle tan universal, massiu, emocional i mercantil que també es juga a la canxa de la política i de l’economia.

  8. Combustion synthesis of AlB2-Al2O3 composite powders with AlB2 nanowire structures

    Science.gov (United States)

    Yang, Pan; Xiao, Guoqing; Ding, Donghai; Ren, Yun; Yang, Shoulei; Lv, Lihua; Hou, Xing

    2018-05-01

    Using of Al and B2O3 powders as starting materials, and Mg-Al alloy as additives, AlB2-Al2O3 composite powders with AlB2 nanowire structures were successfully fabricated via combustion synthesis method in Ar atmosphere at a pressure of 1.5 MPa. The effect of different amount of Mg-Al alloy on the phase compositions and morphology of the combustion products was investigated. The results revealed that AlB2 and Al2O3 increased, whereas Al decreased with the content of Mg-Al alloy increasing. The impurities MgAl2O4 and AlB12 would exist in the sample with adding of 18 wt% Mg-Al alloy. Interestingly, FESEM/TEM/EDS results showed that AlB2 nanowires were observed in the products when the content of Mg-Al alloy is 6 wt% and 12 wt%. The more AlB2 nanowires can be found as the content of Mg-Al alloy increased. And the yield of AlB2 nanowires with the diameter of about 200 nanometers (nm) and the length up to several tens of micrometers (μm) in the combustion product is highest when the content of Mg-Al alloy is 12 wt%. The vapor, such as Mg-Al (g), B2O2 (g), AlO (g) and Al2O (g), produced during the process of combustion synthesis, reacted with each other to yield AlB2 nanowires by vapor-solid (VS) mechanism and the corresponding model was also proposed.

  9. AL ITTIJAHAT AL MUNHARIFAH FI AT TAFSIR LI BADLI ASHAB AL MADZAHIB AL NAHWIYYAH WA BADL MAN YAJHALUNA QAWAID AL LUGHAH AL ARABIYYAH FI NADHAR MUHAMMAD HUSAIN AL DZAHABIY

    Directory of Open Access Journals (Sweden)

    Misbakhudin Misbakhudin

    2017-06-01

    Full Text Available One of the most precious achievement in qur’anic studies was the book of Al-Ittijâhât al-Munharifah fî al-Tafsîr: Dawâfi’uha wa Daf’uha written by A great Islamic scholar, Muhammad Husein al-Dzahabî. He was succeeded in discussing several issues of corruptions of the exegesis of the holy Qur’an. This article is aimed to explain and to describe his analysis toward several corrupted linguist interpretations in their originations and such corrupted linguistic interpretations of the holy Qur’an which are ignoring Arabic structures and grammers

  10. Conjuntivitis alérgica

    Directory of Open Access Journals (Sweden)

    Alejandro Tello Hernández

    2008-07-01

    Full Text Available La conjuntivitis alérgica es una de las causas más comunesde consulta externa en oftalmología y tiene una muy altarelación con las reacciones alérgicas sistémicas. Lafisiopatología de las reacciones de hipersensibilidad noshace entender los cuadros clínicos característicos de estapatología y sus diferentes grados de severidad. Eldiagnostico diferencial es amplio, sin embargo hay clavesdiagnosticas que nos orientan rápidamente al diagnosticocorrecto. El tratamiento se enfoca en las medidasfarmacológicas y no farmacológicas, utilizándolas enconjunto para disminuir la recurrencia del cuadro y prevenirsecuelas visuales.

  11. PENDIDIKAN MENURUT AL-GHAZALI

    Directory of Open Access Journals (Sweden)

    Syamsul Kurniawan

    2016-12-01

    Full Text Available Education reform efforts typically begin with a conceptual perspective before implementation. Thus, developing Islamic education usually begins with a study of a figure and his educational thought. And one of the most influential figures whose thought which has Sufi religious pattern has dominated educational thinking atmosphere over the centuries since his death. The purpose of education according to al-Ghazali was to get closer to Allah. He came with a view that the most noble job is to educate: to become a teacher. Al-Ghazali advised that his students, in the learning process, aim to become scientists who could disseminate their knowledge for the sake of humanity values. Keywords: Al-Ghazali, Thought, Islamic Education.

  12. A united refinement technology for commercial pure Al by Al-10Ti and Al-Ti-C master alloys

    Energy Technology Data Exchange (ETDEWEB)

    Ma Xiaoguang [Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061 (China); Liu Xiangfa [Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061 (China)], E-mail: xfliu@sdu.edu.cn; Ding Haimin [Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061 (China)

    2009-03-05

    Because flake-like TiAl{sub 3} particles in Al-Ti-C master alloys prepared in a melt reaction method dissolve slowly when they are added into Al melt at 720 deg. C, Ti atoms cannot be released rapidly to play the assistant role of grain refinement, leading to a poor refinement efficiency of Al-Ti-C master alloys. A united refinement technology by Al-10Ti and Al-Ti-C master alloys was put forward in this paper. The rational combination of fine blocky TiAl{sub 3} particles in Al-10Ti and TiC particles in Al-Ti-C can improve the nucleation rate of {alpha}-Al. It not only improves the grain refinement efficiency of Al-Ti-C master alloys, but also reduces the consumption.

  13. A united refinement technology for commercial pure Al by Al-10Ti and Al-Ti-C master alloys

    International Nuclear Information System (INIS)

    Ma Xiaoguang; Liu Xiangfa; Ding Haimin

    2009-01-01

    Because flake-like TiAl 3 particles in Al-Ti-C master alloys prepared in a melt reaction method dissolve slowly when they are added into Al melt at 720 deg. C, Ti atoms cannot be released rapidly to play the assistant role of grain refinement, leading to a poor refinement efficiency of Al-Ti-C master alloys. A united refinement technology by Al-10Ti and Al-Ti-C master alloys was put forward in this paper. The rational combination of fine blocky TiAl 3 particles in Al-10Ti and TiC particles in Al-Ti-C can improve the nucleation rate of α-Al. It not only improves the grain refinement efficiency of Al-Ti-C master alloys, but also reduces the consumption

  14. estigma tolerable al estigma intolerable

    Directory of Open Access Journals (Sweden)

    Nelson Arteaga Botello

    2006-01-01

    cristalización pasa por dos referentes de interacción y relación social al interior del espacio escolar. El primero está constituido por parámetros de normalidad y anormalidad a partir de la localización de estigmas. El segundo se encuentra, a contrapelo de la tendencia anterior, tratando de diluir los efectos de los estigmas al señalarlos como una práctica de tipificación social intolerable o inaceptable.

  15. De la contingencia al destino

    Directory of Open Access Journals (Sweden)

    Heller, Agnes

    1991-10-01

    Full Text Available Not available.

    La modernidad no ha podido dar respuesta al problema de la contingencia histórica, El texto muestra, por medio de metáforas, que el abandono necesario de esta cuestión no significa que estemos abocados al relativismo respecto a la contingencia existencial. La contingencia existencial, individual, sigue presente en la vida de todo individuo. Se sostiene que podemos dar un destino a nuestras vidas, y ésta es la tarea principal del filósofo.

  16. Tailoring ultrafine grained and dispersion-strengthened Ti 2 AlC/TiAl ...

    Indian Academy of Sciences (India)

    In situ Ti 2 AlC/TiAl composite was fabricated by hot-pressing method via the reaction system of Ti 3 AlC 2 and Ti-Al pre-alloyed powders at low temperature of 1150 ∘ C. The composite mainly consisted of TiAl, Ti 3 Al and Ti 2 AlC phases. Fine Ti 2 AlC particles were homogeneously distributed and dispersed in the matrix.

  17. ¿COLOMBIA DEBE APOSTARLE AL SOFTWARE LIBRE, AL DE FUENTE ABIERTA O AL PROPIETARIO?

    Directory of Open Access Journals (Sweden)

    Luis Alberto Girón Murillo

    2014-06-01

    Full Text Available Es complejo para gestores y administradores conocer las implicaciones que la adopción de modelos de desarrollo de software tendría para una región. Este artículo ofrece una evaluación de las implicaciones dinámicas que para el desarrollo de software de una región tendría el apostar de forma excluyente al software libre, al software de fuente abierta y al software propietario. Se desarrolló un modelo de simulación en Vensim de la dinámica de sistemas en donde se evaluaron 3 escenarios: uno en donde se adopta de forma excluyente el software libre, uno en donde se adopta el software propietario y uno en donde se adopta el software de fuente abierta. Se ofrecen descripciones y explicaciones de los resultados que sugieren las potencialidades de cada uno de los modelos de desarrollo evaluados.

  18. AlN/Al dual protective coatings on NdFeB by DC magnetron sputtering

    Energy Technology Data Exchange (ETDEWEB)

    Li Jinlong; Mao Shoudong; Sun Kefei [Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China); Li Xiaomin [Shanghai Institute of Ceramics Chinese Academy of Sciences, Shanghai 200050 (China); Song Zhenlun [Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China)], E-mail: songzhenlun@nimte.ac.cn

    2009-11-15

    AlN/Al dual protective coatings were prepared on NdFeB by DC magnetron sputtering in a home-made industrial apparatus. Comparing with Al coating, AlN/Al coatings have a denser structure of an outmost AlN amorphous layer following an inner Al columnar crystal layer. The coatings and NdFeB substrate combine well, and moreover, there is occurrence of metallurgy bonding in the interface layer. Both Al and AlN/Al coatings have a good protective ability to NdFeB. Especially, the corrosion resistance of AlN/Al coated NdFeB is improved largely. AlN/Al and Al protective coatings not only do not deteriorate the magnetic properties of NdFeB, but contribute to their slight increase.

  19. AlN/Al dual protective coatings on NdFeB by DC magnetron sputtering

    International Nuclear Information System (INIS)

    Li Jinlong; Mao Shoudong; Sun Kefei; Li Xiaomin; Song Zhenlun

    2009-01-01

    AlN/Al dual protective coatings were prepared on NdFeB by DC magnetron sputtering in a home-made industrial apparatus. Comparing with Al coating, AlN/Al coatings have a denser structure of an outmost AlN amorphous layer following an inner Al columnar crystal layer. The coatings and NdFeB substrate combine well, and moreover, there is occurrence of metallurgy bonding in the interface layer. Both Al and AlN/Al coatings have a good protective ability to NdFeB. Especially, the corrosion resistance of AlN/Al coated NdFeB is improved largely. AlN/Al and Al protective coatings not only do not deteriorate the magnetic properties of NdFeB, but contribute to their slight increase.

  20. 34 - 38 Ashiru et al.

    African Journals Online (AJOL)

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    INTRODUCTION. Commercial fish feeds are usually expensive because the traditional or conventional protein source ingredient such as fish meal, soyabean ... consumption (Madu et al., 2003). Fish feed constitute for about 60-80% of management cost in agricultural production (Igonifagha, 1979). Periodic scarcity and.

  1. 39 - 47_Aminu et al.

    African Journals Online (AJOL)

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    estimated 453, 000 resulting in the death of a child younger than five years. In Sub-Saharan Africa and. Asia, according to Kotloff et al., (2013), rotavirus is one of the four most common causes of moderate to severe diarrhea among children <5 years of age. Diarrhea is one of the documented '10 killer conditions' among ...

  2. Oyebola et al (23).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    3+ described elsewhere (Oyebola et al., 2010). Ho absorption peaks were obtained from transmission studies carried out with a Cary 5000. UV-VIS-NIR spectrophotometer and corresponding absorption coefficients deduced using the Beer-Lambert law. Spectral emission measurements were carried out using the schematic ...

  3. 180 - 184_ Farouk et al.,

    African Journals Online (AJOL)

    User

    College of Arts, Science and Remedial Studies, Kano, Nigeria aceutical and Medicinal ... d out to determine the levels of Cadmium (Cd) and Lead (Pb) in m ... and soil. Contamination of als may be due to natural, activities (Wilkinson et ation of ...

  4. Adewale et al (18).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    MATERIAL IN SOIL AND MINE TAILINGS OF AWO AND EDE, OSUN-STATE,. NIGERIA. 1*. 1. 2 ... The materials may be original (such as uranium and thorium) or decay .... following equation (Beck et al., 1972). D = 0.042A (K) + 0.429A.

  5. Idowu et al (19).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    aquifer flow (MacDonald et al., 2005). Typically, it travels vertically downwards through the unsaturated zone to the water table, from where it flows according to the hydraulic gradient, until it reaches an area of discharge where it occurs as springs or seepages, providing part of the dry season flow and constituting part of the.

  6. 94 - 99_Nafiu et al.

    African Journals Online (AJOL)

    User

    destination for tourist, it promotes tourism and ecotourism in .... Malaysia. It is also similar with the work of Abuessaila et al., (2011) who reported Trichostrongylus spp. (13.5%) ... animals that tend to receives medical attention were reported to ...

  7. Derecho humano al agua y al saneamiento: derechos estrechamente vinculados al derecho a la vida

    OpenAIRE

    Fernández Aller, Maria Celia; Luis Romero, Elena de; Guzmán Acha, Cristina

    2013-01-01

    Los derechos humanos al agua y al saneamiento están íntimamente relacionados con otros derechos esenciales para la vida, como la alimentación o la salud. Su reconocimiento como derechos humanos en 2010 marca un hito importante en el respeto, protección y realización de estos derechos, que se encuentran seriamente vulnerados para una mayoría de población más vulnerable y empobrecida, sobre todo en el ámbito rural. Mucho camino queda aún para conseguir no sólo la disponibilidad de agua y saneam...

  8. Personalidad y tolerancia al dolor

    Directory of Open Access Journals (Sweden)

    JESÚS M.ª CARRILLO

    2005-01-01

    Full Text Available Se examina la relación de algunas variables de personalidad -EPQ-A (Eysenck y Eysenck, 1975, NEO-PI (McCrae y Costa, 1988 y STA -personalidad esquizotípica- y STB -personalidad límite-, de Claridge y Broks (1984, con la tolerancia al dolor experimental inducido mediante agua fría (cold pressor test, según el procedimiento de Staats, Heckmat y Staats (1998 en una muestra filtrada mediante un cuestionario sobre dolor crónico, dolores de cabeza, de espalda, artritis, síndrome de Raynaud, y personas bajo medicación. La tolerancia al dolor experimental se evaluó mediante el Umbral del dolor (tiempo en segundos desde la introducción de la mano en el agua hasta el primer informe de dolor, Mantenimiento del dolor (duración en segundos de la inmersión de la mano desde la aparición del umbral hasta su retirada y Tolerancia al dolor (duración total en segundos de la inmersión de la mano desde su introducción hasta su retirada. Un análisis correlacional, factorial y de regresión por pasos mostraron un efecto cruzado entre medidas de ansiedad (tolerancia negativa al dolor y psicoticismo, siendo psicoticismo junto con control emocional predictores de tolerancia positiva al dolor. En cuanto a psicoticismo, parece que son sus elementos de naturaleza paranoide y de "dureza" los que afectan a una percepción atenuada del dolor.

  9. Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions.

    Science.gov (United States)

    Zhang, Kun; Li, Huan-Huan; Grünberg, Peter; Li, Qiang; Ye, Sheng-Tao; Tian, Yu-Feng; Yan, Shi-Shen; Lin, Zhao-Jun; Kang, Shi-Shou; Chen, Yan-Xue; Liu, Guo-Lei; Mei, Liang-Mo

    2015-09-21

    Magnetoresistance and rectification are two fundamental physical properties of heterojunctions and respectively have wide applications in spintronics devices. Being different from the well known various magnetoresistance effects, here we report a brand new large magnetoresistance that can be regarded as rectification magnetoresistance: the application of a pure small sinusoidal alternating-current to the nonmagnetic Al/Ge Schottky heterojunctions can generate a significant direct-current voltage, and this rectification voltage strongly varies with the external magnetic field. We find that the rectification magnetoresistance in Al/Ge Schottky heterojunctions is as large as 250% at room temperature, which is greatly enhanced as compared with the conventional magnetoresistance of 70%. The findings of rectification magnetoresistance open the way to the new nonmagnetic Ge-based spintronics devices of large rectification magnetoresistance at ambient temperature under the alternating-current due to the simultaneous implementation of the rectification and magnetoresistance in the same devices.

  10. Large rectification magnetoresistance in nonmagnetic Al/Ge/Al heterojunctions

    OpenAIRE

    Zhang, Kun; Li, Huan-huan; Grünberg, Peter; Li, Qiang; Ye, Sheng-tao; Tian, Yu-feng; Yan, Shi-shen; Lin, Zhao-jun; Kang, Shi-shou; Chen, Yan-xue; Liu, Guo-lei; Mei, and Liang-mo

    2015-01-01

    Magnetoresistance and rectification are two fundamental physical properties of heterojunctions and respectively have wide applications in spintronics devices. Being different from the well known various magnetoresistance effects, here we report a brand new large magnetoresistance that can be regarded as rectification magnetoresistance: the application of a pure small sinusoidal alternating-current to the nonmagnetic Al/Ge Schottky heterojunctions can generate a significant direct-current volt...

  11. Jongerenwerk als werkplaats voor professionalisering

    Directory of Open Access Journals (Sweden)

    Judith Metz

    2012-03-01

    met wetenschappelijke experimentele kennis als norm, is dat zij niet altijd goed aansluiten bij de complexiteit en flexibiliteit van de uitvoeringspraktijk. Vraag is: wat dan wel? In Amsterdam richten opleidingen en werkveld in 2008 Youth Spot op, het onderzoek- en praktijkcentrum voor jongerenwerk, met als doel om gezamenlijk te werken aan de profilering, professionalisering en praktijkontwikkeling van het jongerenwerk. Dit artikel belicht de aanleiding voor het ontstaan van Youth Spot, de structuur van de samenwerking, de ervaringen met de wijze van samen werken en de meerwaarde voor de professionalisering van het grootstedelijk jongerenwerk. Daarmee biedt dit artikel enerzijds een kijkje in de keuken van het (grootstedelijke jongerenwerk en anderzijds biedt zij inzicht in ervaringen met alternatieve professionalisering strategieën.

  12. Response to Lefebvre et al.

    Science.gov (United States)

    Takeda, K; Kou, I; Kawakami, N; Yasuhiko, Y; Ogura, Y; Imagawa, E; Miyake, N; Matsumoto, N; Sudo, H; Kotani, T; Nakamura, M; Matsumoto, M; Watanabe, K; Ikegawa, S

    2017-11-01

    Congenital scoliosis (CS) is a common vertebral malformation with incidence of up to 1 of 1000 births worldwide. Recently, TBX6 has been reported as the first disease gene for CS: about 10% of CS patients are compound heterozygotes of rare null mutations and a common haplotype composed by 3 SNPs in TBX6. Lefebvre et al in this journal reported that 2 patients with spondylocostal dysostosis (SCD), a rare skeletal dysplasia affecting spine and ribs also have TBX6 mutations: 1 carried the microdeletion and a rare missense variant, and another 2 rare missense variants. We investigated the pathogenicity of the 3 missense variants in SCD by a luciferase assay. The results were negative for the proposal of Lefebvre et al. We consider these 2 SCD patients are more probably compound heterozygotes of null mutations and a common risk haplotype just as CS patients with TBX6 mutations. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  13. Consulta de evaluación de afecciones mamarias al nivel primario: Resultados

    Directory of Open Access Journals (Sweden)

    Alfredo Hevia Martín

    1997-08-01

    Full Text Available Se encuestaron y examinaron 510 mujeres comprendidas entre 15 y 75 años de edad, pertenecientes a la población atendida por el Policlínico Comunitario Docente "Héroes de Girón" en el período entre octubre de 1994 y julio de 1995; se incluyen además pacientes de alto riesgo previamente a la realización de pesquisaje de carcinoma mamario por mamografía, para la evaluación y detección de afecciones mamarias en general. Los casos detectados con algún signo al realizarse el examen físico fueron estudiados mediante ultrasonografía, mamografía y biopsia aspirativa con aguja fina (BAAF, indistintamente, según se considerara procedente en coordinación con el Servicio de Radiología del Hospital Clinicoquirúrgico "Hermanos Ameijeiras" y la consulta similar del Servicio de Cirugía del Hospital Clinicoquirúrgico "Joaquín Albarrán". Acuden a consulta 127 casos sintomáticos, de los cuales resultan positivos, con algún signo en el examen físico, 61; de estas pacientes son operadas 29 por presentar distintos tipos de tumores benignos, son detectados 3 carcinomas, todos asintomáticos.510 women aged 15-75, who received medical attention at the "Héroes de Girón". Community Teaching Polyclinic, were surveyed and examined from October, 1994, to July, 1995. Patients at high risk were also included before applying the screening tests for carcinoma by mammography in order to evaluate and detect brezst affections in general. Patients with signs detected on the physical examination were studied by ultrasonography, mammography, and fine needle aspiration biopsy, as it was required in coordination with the Radiology Service of the "Hermanos Ameijeiras" Clinical and Surgical Hospital and with the similar consultation of the Surgery Service in the "Joaquín Albarrán" Clinical and Surgical Hospital. Of the 127 symptomatic cases, 61 patients were identified as positive because of the presence of some sign. 29 of them were operated on for having

  14. Transient oxidation of Al-deposited Fe-Cr-Al alloy foil

    International Nuclear Information System (INIS)

    Andoh, A.

    1997-01-01

    The oxide phases formed on an Al-deposited Fe-Cr-Al alloy foil and an Fe-Cr-Al alloy foil of the same levels of Al and (La+Ce) contents, and their oxidation kinetics have been studied in air at 1173 and 1373 K using TGA, XRD and SEM. Al deposition promotes the growth of metastable aluminas (θ-Al 2 O 3 , γ-Al 2 O 3 ). Scales consisting of θ-Al 2 O 3 and a small amount of α-Al 2 O 3 develop on the Al-deposited foil at 1173 K and exhibit the whisker-type morphology. In the early stage of oxidation at 1373 K, thick scales consisting of θ-Al 2 O 3 and α-Al 2 O 3 grow rapidly on the Al-deposited foil. The transformation from θ-Al 2 O 3 to α-Al 2 O 3 is very fast, and the scales result in only α-Al 2 O 3 . In contrast, α-Al 2 O 3 scales containing a minor amount of FeAl 2 O 4 develop on the alloy foil. The growth rate of α-Al 2 O 3 scales on the Al-deposited foil is smaller than that on the alloy foil and very close to that on NiAl at 1373 K. (orig.)

  15. Response to Lisovski et al.

    Science.gov (United States)

    Streby, Henry M.; Kramer, Gunnar R.; Peterson, Sean M.; Lehman, Justin A.; Buehler, David A.; Andersen, David

    2018-01-01

    Lisovski et al. [1] describe the widely recognized limitations of light-level geolocator data for identifying short-distance latitudinal movements, recommend that caution be used when interpreting such data, intimated that we did not use such caution and argued that environmental shading likely explained the Golden-winged Warbler (Vermivora chrysoptera) movements described in our 2015 report [2] . Lisovski et al. [1] conclude that the bird movements we reported could not be disentangled from estimation error in stationary animals caused by environmental shading. We argue that, to the contrary, these hypotheses can easily be disentangled because the premise that environmental shading caused synchronous and parallel error among geolocators is false. With their assertion that our location estimates could be biased by >3,500 km on a day with no observable local sources of shading, Lisovski et al. [1] have taken a position of incredulity toward all geolocator-based animal movement data published to date.

  16. Vormundschaftsrecht als Grundlage politischer Herrschaft

    Directory of Open Access Journals (Sweden)

    Arne Duncker

    2006-07-01

    Full Text Available In ihrer beachtlichen und sehr gewissenhaft dokumentierten Arbeit über vormundschaftliche Regentschaften im 16. und 17. Jahrhundert beschreibt Pauline Puppel unter ausführlichem Bezug auf zeitgenössische Literatur und Archivalien sowohl die allgemeine Rechtslage im damaligen Reich als auch die Anwendungsfälle in Hessen, wo zwischen 1500 und 1700 insgesamt viermal eine Landgräfin als Vormünderin des Fürsten zur Regentin ihres Landes wurde. Dies steht exemplarisch für eine bereits in der Frühen Neuzeit mögliche und nicht einmal ganz seltene Form politischer Frauenherrschaft, die bisher oft nicht hinreichend gewürdigt wurde. Puppels Untersuchung ist in zwei Hauptteile gegliedert. Der erste Teil (Das juristische Regelwerk“, S. 34-143 behandelt die zeitgenössischen Rahmenbedingungen der durch Frauen ausgeübten Vormundschaft und Regentschaft. Der zweite Abschnitt („Die Landgräfinnen von Hessen als Regentinnen“, S. 144-307 befasst sich mit der Ausfüllung dieser Regeln durch konkrete Fallbeispiele in Gestalt von Leben und Regentschaft der regierenden Landgräfinnen von Hessen.

  17. Stem cells therapy for ALS.

    Science.gov (United States)

    Mazzini, Letizia; Vescovi, Angelo; Cantello, Roberto; Gelati, Maurizio; Vercelli, Alessandro

    2016-01-01

    Despite knowledge on the molecular basis of amyotrophic lateral sclerosis (ALS) having quickly progressed over the last few years, such discoveries have not yet translated into new therapeutics. With the advancement of stem cell technologies there is hope for stem cell therapeutics as novel treatments for ALS. We discuss in detail the therapeutic potential of different types of stem cells in preclinical and clinical works. Moreover, we address many open questions in clinical translation. SC therapy is a potentially promising new treatment for ALS and the need to better understand how to develop cell-based experimental treatments, and how to implement them in clinical trials, becomes more pressing. Mesenchymal stem cells and neural fetal stem cells have emerged as safe and potentially effective cell types, but there is a need to carry out appropriately designed experimental studies to verify their long-term safety and possibly efficacy. Moreover, the cost-benefit analysis of the results must take into account the quality of life of the patients as a major end point. It is our opinion that a multicenter international clinical program aime d at fine-tuning and coordinating transplantation procedures and protocols is mandatory.

  18. PRIMEROS DATOS SOBRE LOS MICROMAMÍFEROS (ROEDORES E INSECTÍVOROS COETÁNEOS AL SOLUTRENSE EN LA CUEVA DE KIPUTZ IX (MUTRIKU, GUIPUZKOA, ESPAÑA

    Directory of Open Access Journals (Sweden)

    Naroa García Ibaibarriaga

    2013-09-01

    Full Text Available En este artículo describimos los micromamíferos de los lechos del yacimiento paleontológico de Kiputz IX correspondientes a una cronología arqueológica solutrense. La buena preservación de los restos óseos y la aplicación de las actuales técnicas micropaleontológicas nos permiten realizar la reconstrucción paleoambiental para el periodo estudiado. Los pequeños mamíferos están representados en el yacimiento por ocho taxones, cinco pertenecientes al Orden Rodentia y tres al Orden Soricomorpha. Las variaciones de la temperatura determinadas a partir de la asociación de micromamíferos, sugieren que el clima en el momento de la formación del conjunto sería más frío y húmedo que en la actualidad.In this article, the small mammal assemblage contemporary to the Solutrean age from the paleontological site of Kiputz IX cave (Mutriku, Gipuzkoa, Spain is described. The good preservation of bones and the application of latest micropaleontological techniques allow a paleoenvironmental reconstruction of the period analyzed. Small mammals are represented in the site by ten taxa, seven belonging to the Orden Rodentia (Arvicola amphibius, Microtus (Microtus agrestis, Microtus (Microtus arvalis, Microtus (Alexandromys oeconomus, Chionomys nivalis, Microtus (Terricola sp., Apodemus sylvaticus-flavicollis and three to the Orden Eulipotyphla (Sorex (Sorex minutus, Sorex (Sorex araneus-coronatus, Talpa sp.. The environmental variations estimated on the basis of the micromammal association, suggested that the weather in the moment of the assemblage’s formation would be colder than the one occurring in the area at the present day. The humidity also could be higher than the current one.

  19. Comparison of one and two-neutron transfer near the Coulomb barrier for the 27Al(18O, 16O)29Al, 27Al(18O, 17O)28Al and 27Al(13C, 12C)28Al reactions

    International Nuclear Information System (INIS)

    Schiller, S.A.; Eck, J.S.

    1975-01-01

    Total reaction cross sections for the transfer reactions 27 Al( 18 O, 16 O) 29 Al, 27 Al( 18 O, 17 O) 28 Al and 27 Al( 13 C, 12 C) 28 Al are reported for center-of-mass energies between 13 and 20 MeV for 18 O projectiles and between 11 and 17.5 MeV for 13 C projectiles. The reaction products, 29 Al, and 28 Al, beta decay to 29 Si and 28 Si, respectively, and the subsequent γ decays of 29 Si and 28 Si were measured. Due to the relatively long beta decay half lives, data were taken in a beam-off mode, resulting in very clean spectra. Total cross sections were calculated and compared with a theoretical model for barrier penetration proposed by C.Y. Wong. Differences between 18 O induced one and two-neutron total transfer reaction cross sections are discussed. (orig.) [de

  20. Factores Psicológicos y Sociales Asociados a la Adherencia al Tratamiento en Adolescentes Diabéticos Tipo 1 Psychological and Social Factors Related to Treatment Adherence in Type 1 Diabetic Adolescents

    Directory of Open Access Journals (Sweden)

    Manuel Salvador Ortiz

    2004-05-01

    Full Text Available Con la finalidad de determinar las tasas de adherencia al tratamiento de la diabetes mellitus tipo 1 y qué factores psicológicos y sociales se relacionan con ésta, se diseñó un estudio no experimental correlacional. Los participantes fueron 61 adolescentes entre 12 y 18 años de edad (60.7% mujeres y 39.3% hombres, socios de la Fundación de Diabetes Juvenil de Chile. De los participantes, un 50.8% presentaron una pobre adhesión al tratamiento. Las variables que se asociaron a la adherencia fueron conocimiento sobre la enfermedad (p = 0.001, la percepción de autoeficacia (p = 0.027 y el uso del esquema de tratamiento intensificado (p = 0.03. Aquellos adolescentes pertenecientes al nivel socioeconómico alto presentaron mejor adherencia al tratamiento que los participantes de menor estrato. Estos resultados ponen de manifiesto la importancia de la educación en el manejo de la diabetes mellitus tipo 1, así como la relevancia que puede tener el uso de la terapia insulínica intensificada.With the purpose of determining adherence rates to the treatment of type 1 diabetes mellitus and the psychosocial factors associated, a correlational non-experimental study was conducted. Participants were 61 adolescents between 12 and 18 years old (60.7% women and 39.3% men, and members of Fundación de Diabetes Juvenil de Chile. 50.8% of participants reported poor treatment adhesion. Associated variables to adherence were illness knowledge (p = 0.001, self-efficacy perception, (p = 0.027 and an intensified treatment scheme use. Upper-class adolescents showed better treatment adherence than lower class ones. These data illustrate the importance of education in type 1 diabetes mellitus management, as well as the relevance of intensified insulin therapy.

  1. Propuesta de acciones que incrementen la incorporación de los adultos mayores al Club de Abuelos del Consultorio Médico161 del Policlínico Raúl Sánchez

    Directory of Open Access Journals (Sweden)

    Daniel Labrador Labrador

    2009-12-01

    Full Text Available La realización de este trabajo tiene como propósito lograr un acercamiento a un grupo poblacional que en estos momentos constituye uno de los más numerosos en nuestro país, el adulto mayor. En el trabajo se analizó la situación de salud de la población del consultorio médico161 perteneciente al área de salud del Policlínico Docente Comunitario Raúl Sánchez en Pinar Del Río..Nos posibilitó acercarnos a la realidad social de nuestro entorno, aportando un enriquecimiento espiritual al profundizar en el estudio de las conductas y de poder cooperar para erradicarlas y así modificar estilos de vida y hacer de nuestro medio social un espacio seguro. A través de métodos empíricos se realizó el acercamiento a la población, identificando las causas de uno de los principales problemas de la comunidad (la falta de incorporación de los adultos mayores al círculo de abuelos a través de lluvia de ideas se elaboró un plan de acción con participación intersectorial y comunitaria con el objetivo de que este problema dejara de ser uno de los principales de esta comunidad en el no solo se realizarán actividades físicas también otras donde estarán involucrados en su desarrollo médico, enfermera, representantes comunitarios apoyando al técnico de cultura física que se desempeña en ese consultorio.

  2. AlN nanoparticle-reinforced nanocrystalline Al matrix composites: Fabrication and mechanical properties

    International Nuclear Information System (INIS)

    Liu, Y.Q.; Cong, H.T.; Wang, W.; Sun, C.H.; Cheng, H.M.

    2009-01-01

    To improve the specific strength and stiffness of Al-based composites, AlN/Al nanoparticles were in-situ synthesized by arc plasma evaporation of Al in nitrogen atmosphere and consolidated by hot-pressing to fabricate AlN nanoparticle-reinforced nanocrystalline Al composites (0-39 vol.% AlN). Microstructure characterization shows that AlN nanoparticles homogeneously distribute in the matrix of Al nanocrystalline, which forms atomically bonded interfaces of AlN/Al. The hardness and the elastic modulus of the nanocomposite have been improved dramatically, up to 3.48 GPa and 142 GPa, respectively. Such improvement is believed to result from the grain refinement strengthening and the interface strengthening (load transfer) between the Al matrix and AlN nanoparticles

  3. Armaflex in Burj al Arab; Armaflex im Burj al Arab

    Energy Technology Data Exchange (ETDEWEB)

    Steiner, B.

    2003-07-01

    This article describes the Burj al Arab in Dubai, the unique seven-star high-rise hotel. The construction of the hotel, that is built on 250 piles driven into the sand of an artificial island in the Persian Gulf, is described. In particular, various special materials used in the building are described, as are the luxurious fittings and furnishings of the hotel. The cooling and air-conditioning installations that are necessary as a result of the desert climate of Dubai are described and the use of 'Armaflex' elastomer insulating material for the insulation of refrigeration machines and cold-water piping is discussed.

  4. Structural stability and electronic properties of AlCu3, AlCu2Zr in AlZr3: Stabilnost strukture in elektronske lastnosti AlCu3, AlCu2Zr in AlZr3:

    OpenAIRE

    Cheng, Rong; Wu, Xiao-Yu

    2013-01-01

    First-principles calculations were performed to study the alloying stability and electronic structure of the Al-based intermetallic compounds AlCusub3, AlCusub{2}Zr and AlZrsub3. The results show that the lattice parameters obtained after the full relaxation of the crystalline cells are consistent with the experimental data, and these intermetallics have a strong alloying ability and structural stability due to their negative formation energies and their cohesive energies. A further analysis ...

  5. A study of ion damage in Al, Al/Cu and Al/Ag

    International Nuclear Information System (INIS)

    Marikar, P.

    1979-06-01

    Specimens of pure aluminium, aluminium-copper and aluminium-silver have been irradiated with 20 keV helium ions and/or 100 keV aluminium ions and the nature of the damage assessed using transmission electron microscopy. Irradiation with 20 keV helium ions to a dose of 2.7 x 10 15 ions cm -2 results in the formation of interstitial loops and helium gas bubbles. The helium bubbles were detectable only after annealing at a high temperature following irradiation. When the helium preinjected aluminium specimens were irradiated with 100 keV Al + ions to a dose of 84 dpa at temperatures above 150 0 C, voids were observed to form. At a lower dose of 64 dpa, only a high density of dislocation loops was observed. Al-1 wt% Cu alloy containing partially coherent theta' precipitates resists void formation to a considerable extent, and Al-10 wt% Ag alloy containing coherent G.P. zones offers complete resistance to both dislocation loop nucleation and void formation. The experimental results are discussed in the light of the current theories of irradiation induced damage in metals. The importance of the dislocation-sink efficiency for point defects, the gaseous impurity and the alloying elements in determining void formation is highlighted. (author)

  6. Investigations of Al-Dalang and Al-Hawashat meteorites

    Energy Technology Data Exchange (ETDEWEB)

    Gismelseed, A. M., E-mail: abbasher@squ.edu.om [Sultan Qaboos University, College of Science (Oman); Abdallah, S. B. [University of Khartoum, Department of Geology, Faculty of Science (Sudan); Al-Rawas, A. D.; Al-Mabsali, F. N.; Widatallah, H. M.; Elzain, M. E.; Yousif, A. A. [Sultan Qaboos University, College of Science (Oman); Ericsson, T. [Uppsala University, Department of Physics and Material Sciences (Sweden); Annersten, H. [Uppsala University, Department of Earth Sciences (Sweden)

    2016-12-15

    Mössbauer spectroscopy, X-ray diffraction (XRD) measurements, and electron microprobe analysis (EMPA) have been performed on two meteorites named Al-Dalang and Al-Hawashat after identifying their falling sites in the Western region of Sudan. These two meteorites are ordinary chondrites with similar mineralogy. XRD and EMPA show that the two specimens consist of primary olivine, ortho-pyroxene and later crystallising clino-pyroxene as reaction rims against plagioclase. Fe-metal phases are dominated by kamacite (≈6 wt.% Ni) and minor amounts of tetrataenite (≈52 wt.% Ni). Troilite (FeS) and alabandite (MnS) are optically observed as sulphide phases. The Mössbauer measurements at 295 and 78 K are in agreement with the above characterizations, showing at least two paramagnetic doublets which are assigned to olivine and pyroxene and magnetic sextets assigned to kamacite (hyperfine field ≈33.5 T) and troilite FeS (hyperfine field ≈31 T).

  7. FTD and ALS: genetic ties that bind.

    Science.gov (United States)

    Orr, Harry T

    2011-10-20

    Curiously, amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD), seemingly disparate neurodegenerative disorders, can be inherited together. Two groups (DeJesus-Hernandez et al. and Renton et al.) show that the long sought after ALS/FTD mutation on chromosomal region 9p is a hexanucleotide expansion in C90RF72. These studies, plus a study on X-linked ALS/FTD, provide molecular starting points for identifying pathways that link ALS and FTD pathogenesis. Copyright © 2011 Elsevier Inc. All rights reserved.

  8. United modification of Al-24Si alloy by Al-P and Al-Ti-C master alloys

    Institute of Scientific and Technical Information of China (English)

    韩延峰; 刘相法; 王海梅; 王振卿; 边秀房; 张均艳

    2003-01-01

    The modification effect of a new type of Al-P master alloy on Al-24Si alloys was investigated. It is foundthat excellent modification effect can be obtained by the addition of this new type of A1-P master alloy into Al-24Simelt and the average primary Si grain size is decreased below 47 μm from original 225 μm. It is also found that theTiC particles in the melt coming from Al8Ti2C can improve the modification effect of the Al-P master alloy. Whenthe content of TiC particles in the Al-24Si melt is 0.03 %, the improvement reaches the maximum and keeps steadywith increasing content of TiC particles. Modification effect occurs at 50 min after the addition of the Al-P master al-loy and TiC particles, and keeps stable with prolonging holding time.

  9. The ALS gun electronics system

    International Nuclear Information System (INIS)

    Lo, C.C.

    1993-01-01

    The ALS Gun Electronics system has been designed to accommodate the gun with a custom made socket and a high speed electronics circuit which is capable of producing single and multiple electron bunches with time jitters measured at better than 50 PS. The system generates the gated RF signal at ground level before sending it up to the 120 KV-biased gun deck via a fiber optic cable. The current pulse width as a function of grid bias, using an Eimac 8847A planar triode simulating an electron gun, was measured to show the relationship between the two parameters

  10. The ALS Gun Electronics system

    International Nuclear Information System (INIS)

    Lo, C.C.

    1993-05-01

    The ALS Gun Electronics system has been designed to accommodate gun with a custom made socket and high speed electronics circuit which is capable of producing single and multiple electron bunches with time jitters measured at better than 50 PS. The system generates the gated RF signal at ground level before sending it up to the 120 KV-biased gun deck via a fiber optic cable. The current pulse width as a function of grid bias, using an Eimac 8847A planar triode simulating an electron gun, was measured to show the relationship between the two parameters

  11. Aportes amazonicos al formativo andino*

    OpenAIRE

    Morales Chocano, Daniel

    2014-01-01

    RESUMEN La tesis de J.C Tello sobre los orígenes amazónicos de la cultura Chavín ha tenido en la iconografía amazónica presente en Chavin sus argumentos mas fuertes, sin embargo, falta mucho por investigar el aspecto ideológico que representan esos iconos como el jaguar, las cabezas trofeo y el uso de alucinógenos, los cuales indudablemente se vinculan al chamanismo amazónico.

  12. Gettysburg: Monumento al mundo libre

    Directory of Open Access Journals (Sweden)

    Neutra, Richard J.

    1961-12-01

    Full Text Available En el verano del año 1958 fui invitado, por las autoridades de la Universidad de Arizona, en Tucson, a la colocación de la primera piedra de su futuro taller, construido para favorecer el desarrollo técnico del Estado. Varios alcaldes y ministros presenciaron la ceremonia, que fue muy interesante, y uno de los periodistas presentes, John Riddick, del "Tucson Daily Citizen", invitó cordialmente, a mi esposa y a mí, a atravesar, al día siguiente, la frontera mejicana, que cruzaba un vasto desierto.

  13. A melancolia em Al Berto

    OpenAIRE

    Camila Emanuele Martins de Souza

    2015-01-01

    Este trabalho objetiva estudar, sob a perspectiva da melancolia, os livros Salsugem (1984) e Horto de Incêndio (1997), de Al Berto. O autor português produz escritos em que a temática da melancolia atravessa a palavra, o que justifica o debruçar-se sobre as construções textuais da poética albertiana, a fim de traçar-lhe novas possibilidades de leitura por esse ângulo. Para isso, com o intuito de compreender o discurso melancólico segue-se o embasamento teórico: de Klibansky, Panosfsky e Saxl ...

  14. Nanoporous Al sandwich foils using size effect of Al layer thickness during Cu/Al/Cu laminate rolling

    Science.gov (United States)

    Yu, Hailiang; Lu, Cheng; Tieu, A. Kiet; Li, Huijun; Godbole, Ajit; Kong, Charlie

    2018-06-01

    The roll bonding technique is one of the most widely used methods to produce metal laminate sheets. Such sheets offer interesting research opportunities for both scientists and engineers. In this paper, we report on an experimental investigation of the 'thickness effect' during laminate rolling for the first time. Using a four-high multifunction rolling mill, Cu/Al/Cu laminate sheets were fabricated with a range of thicknesses (16, 40, 70 and 130 μm) of the Al layer. The thickness of the Cu sheets was a constant 300 μm. After rolling, TEM images show good bonding quality between the Cu and Al layers. However, there are many nanoscale pores in the Al layer. The fraction of nanoscale pores in the Al layer increases with a reduction in the Al layer thickness. The finite element method was used to simulate the Cu/Al/Cu rolling process. The simulation results reveal the effect of the Al layer thickness on the deformation characteristics of the Cu/Al/Cu laminate. Finally, we propose that the size effect of the Al layer thickness during Cu/Al/Cu laminate rolling may offer a method to fabricate 'nanoporous' Al sandwich laminate foils. Such foils can be used in electromagnetic shielding of electrical devices and noisy shielding of building.

  15. Betaalde arbeid als verdringer van vrijwilligerswerk? Overbelasting als mogelijke verklaring

    Directory of Open Access Journals (Sweden)

    Angela Kok-Van Meer

    2014-06-01

    Full Text Available Do paid work activities displace volunteering? A potential explanation from role overload theoryRecent changes in Dutch society might lead to a shortage of volunteers. On the one hand, the demand for volunteers is increasing: in the social welfare domain because of governmental austerity policies and in other domains such as sports because of the higher supervision intensity of activities. On the other hand, the supply of volunteers is likely to decrease as more and more women and older workers are active in the labor market, which reduces the time that is available for volunteering. Role overload theory would suggest that the increasing labor participation rate of certain categories of workers goes along with a decline of participation in voluntary work. The secondary data analysis shows that various role loads (work, care for children living at home are associated with differences in participation in voluntary work. However, while a higher number of contractual work hours and hours spent on work-related training are negatively associated with volunteer work, care for children living at home is positively associated with volunteering. These results provide only limited support for role overload theory.Betaalde arbeid als verdringer van vrijwilligerswerk? Overbelasting als mogelijke verklaringDe afgelopen jaren hebben zich enkele maatschappelijke veranderingen voorgedaan, die wellicht tot schaarste op de Nederlandse vrijwilligersmarkt zouden kunnen leiden. Enerzijds neemt de vraag naar vrijwilligers toe doordat subsidieregelingen versoberen (bijvoorbeeld in zorg en welzijn en de begeleidingsintensiteit in bepaalde organisaties stijgt (bijvoorbeeld in sport. Anderzijds neemt het aanbod van vrijwilligers af doordat vrouwen en ouderen meer en langer op de arbeidsmarkt actief zijn, waardoor minder tijd beschikbaar is voor vrijwilligerswerk. In dit artikel wordt aan de hand van de role overload theorie nagegaan of het al dan niet deelnemen aan

  16. Muflikhah et al., Afr., J. Infect. Dis.

    African Journals Online (AJOL)

    TOSHIBA

    2017-10-13

    Oct 13, 2017 ... Human infection occurs mainly by ingesting food or water ... Humans can be infected by consumption of uncooked meat, contaminated food or water, ..... Malaysia, Alvarado-Esquivel et al., (2011) in Mexico, Wang et al., (2014) ...

  17. Heterotopia als sociaal-ruimtelijke constructie

    NARCIS (Netherlands)

    Lengkeek, J.

    2003-01-01

    Uitleg van het begrip heterotopia, waar het gaat om het gebruik van de ruimte. Volgens de auteur wordt heterotopia als persoonlijke ruimte en als vrijetijdsruimte op tal van manieren tot stand gebracht; het is een georganiseerde wereld

  18. Benefits for Military Veterans with ALS

    Science.gov (United States)

    ... Chapters Certified Centers and Clinics Support Groups About ALS About Us Our Research In Your Community Advocate ... Veterans Resources for Military Veterans, Families & Survivors The ALS Association is working everyday to support people with ...

  19. con bajo peso al nacer

    Directory of Open Access Journals (Sweden)

    Adriana Mora Antó

    2005-01-01

    Full Text Available Esta investigación dio cuenta de la relación entre el estilo de funcionamiento familiar, los patrones de crianza y las edades de desarrollo evolutivo en niños, nacidos con bajo peso. El estudio descriptivo correlacional se realizó con 41 niños y sus madres, aplicándose cuestionarios sobre funcionamiento familiar, prácticas de crianza y desarrollo infantil. Los resultados señalaron la existencia de un funcionamiento familiar caracterizado por una cohesión amalgamada y una adaptabilidad caótica, una disciplina complaciente, falta de control y de límites claros en la díada madre-hijo. Se trataba de familias monoparentales, donde la temprana edad de concepción, el madresolterismo y el apoyo de la familia extensa eran constantes. Las edades evolutivas registradas indicaron un desarrollo inferior a la edad cronológica, en la mayor parte de los casos; sin embargo, éstas tendieron a ser superiores al compararlas con la edades reales de los infantes. No se encontró una correlación estadísticamente significativa entre la edad de desarrollo y los diferentes factores del funcionamiento familiar para algunos de los rangos de edad considerados; sin embargo, no se lo descartó por completo, especialmente en lo referente al optimismo familiar

  20. Rekonstruksi Konsep Ijtihad: Studi Pemikiran Ben’umar tentang al-Ijtihad fi al-Waqi’

    Directory of Open Access Journals (Sweden)

    Duski Ibrahim

    2015-10-01

    Full Text Available This paper is the result of a research that evaluating the reconstruction the concept of ijtihad, by discuss the idea of al-Ijtihad Ben'umar fi al-waqi’. This paper concludes that Al-Ijtihad fi al-waqi’ is actually a form of collective ijtihad (al ijtihad al-jama'i, by gathering the experts of shari'ah law (fuqaha` ash-shar'i and experts Researchers and scientists (khubara` al-'ashr. Because experts know the nash purposes, while researchers and scientists (al-khubara` know the reality (al-waqi’, the effects in the future (ma'alat = future effect and challenges (tahaddiyat. The idea of formulating the concept of al-ijtihad fi al-waqi’ emerged based on a premise that ijtihad is a creation of experts to implement Islamic law in society. Therefore, the concept of ijtihad experienced a significant development, start from using the nash from the language aspects, continue to the using of logic. At the moment when the situation people are increasingly develop, then the creation of ijtihad become a necessary to developed, for example in the form of al-ijtihad fi al-waqi’ . About the source of the formation of the concept of al -ijtihad fi al-waqi’ comes from theory about the functions of nash, al-manath theory in Islamic law, and supported by the theory of al-mashlalah al-mursalah.

  1. Al-quran dalam Perspektif Budaya

    OpenAIRE

    Sudrajat, Ajat

    2009-01-01

    Al-Quran merupakan kitab suci terakhir yang diturunkan kepada manusia. Tujuan utama diturunkannya al-Quran adalah sebagai kitab petunjuk yang meliputi bidang akidah, syariah, dan akhlak. Akan tetapi di luar ketiga petunjuk tersebut, al-Quran telah memberikan motivasi dan inspirasi kepada umat Islam dalam berbagai bidang kehidupan sehingga melahirkan jenis budaya tertentu. Dialog intelektual yang dilakukan secara kreatif oleh umat Islam terhadap al-Quran ternyata telah menghasilkan lahirnya ge...

  2. A study of the Al-rich part of the Al-Re alloy system

    International Nuclear Information System (INIS)

    Balanetskyy, S.; Grushko, B.

    2008-01-01

    The Al-rich part of the Al-Re phase diagram was reinvestigated by scanning and transmission electron microscopy, powder X-ray diffraction and differential thermal analysis. The earlier reported Al 12 Re, Al 6 Re, and Al 11 Re 4 phases were confirmed. Close to the Al 4 Re composition a high-temperature h-Al 4 Re and a low-temperature l-Al 4 Re phase were found to be formed at slightly different compositions. Both exhibited compositional ranges. A new phase was revealed close to the Al 3 Re composition. The Al 11 Re 4 phase is formed congruently at 1650 deg. C, Al 3 Re peritectically at 1610 deg. C, h-Al 4 Re peritectically at 1410 deg. C, l-Al 4 Re peritectically at ∼1000 deg. C, Al 6 Re peritectically at 813 deg. C and Al 12 Re peritectically at 746 deg. C. Finally, the Al 12 Re-(Al) eutectic is formed at 658 deg. C. The Al 3 Re and h-Al 4 Re are decomposed by eutectoid reactions at ∼946 and 833 deg., respectively. The structure of the h-Al 4 Re phase has not yet been clarified, but it is distinctly different from the Al 4 W phase suggested earlier. The structure of l-Al 4 Re was confirmed. The Al 3 Re phase was found to have a monoclinic structure with a = 0.5180(4) nm, b = 3.97641(9) nm, c = 0.4955(3) nm and β = 99.55(7) o

  3. Laser alloyed Al-Ni-Fe coatings

    CSIR Research Space (South Africa)

    Pityana, SL

    2008-10-01

    Full Text Available The aim of this work was to produce crack-free thin surface layers consisting of binary (Al-Ni, Al-Fe) and ternary (Al-Ni-Fe) intermetallic phases by means of a high power laser beam. The laser surface alloying was carried out by melting Fe and Ni...

  4. Bipolar characteristics of AlGaN/AlN/GaN/AlGaN double heterojunction structure with AlGaN as buffer layer

    International Nuclear Information System (INIS)

    Peng, Enchao; Wang, Xiaoliang; Xiao, Hongling; Wang, Cuimei; Yin, Haibo; Chen, Hong; Feng, Chun; Jiang, Lijuan; Hou, Xun; Wang, Zhanguo

    2013-01-01

    Highlights: •2DEG and 2DHG coexist in the AlGaN/AlN/GaN/AlGaN DH-structure. •The sheet densities of 2DEG and 2DHG vary with buffer Al content and GaN thickness. •The conditions for the disappearance of 2DHG are discussed. •Increasing buffer Al content provides better electron confinement. •Dislocation scattering is reduced in the DH-structure. -- Abstract: This is a theoretical study of AlGaN/AlN/GaN/AlGaN double heterojunction (DH) structure with AlGaN as buffer layer. Our calculation shows that as the buffer Al content increases, though two-dimensional electron gas (2DEG) sheet density decreases, the channel back-barrier caused by polarization-induced electric field in GaN provides better electron confinement. And under certain conditions the DH-structure shows bipolar characteristics, with an additional two-dimensional hole gas (2DHG) formed at GaN/AlGaN interface. The influence of the buffer Al content and GaN channel thickness on the 2DEG and 2DHG sheet densities are investigated, and the conditions for the disappearance of 2DHG are discussed. Also, the mobility inhibited by dislocation scattering is enhanced in DH-structure due to the enhancement of screening effect of the 2DEG

  5. IDENTIFICACIÓN MOLECULAR DE POBLACIONES BACTERIANAS ASOCIADAS AL CARACOL PALA (Strombus gigas DEL CARIBE COLOMBIANO

    Directory of Open Access Journals (Sweden)

    EDINSON ACOSTA

    2009-05-01

    Full Text Available RESUMEN El caracol Pala, Strombus gigas (Strombidae, es de gran importancia ecológica y socioeconómica en el área caribeña colombiana. Sin embargo, es una especie catalogada como “vulnerable” y existe muy poca información referente a las especies bacterianas asociadas al caracol que puedan ser importantes para el desarrollo, manejo productivo y de seguridad acuícola de estos gastrópodos. En este trabajo, nosotros empleamos un estudio microbiológico y molecular de la región intergénica entre los genes 16S y 23S rDNA, análisis del gen rDNA 16S y secuenciación, para analizar las bacterias asociadas al caracol Pala (S. gigas. La composición de bacterias cultivables asociadas fue evaluada por su capacidad para crecer en agar marino y en medios de cultivos selectivos. De un total de 28 muestras analizadas encontramos que el número de bacterias cultivadas en condiciones aerobias fue de alrededor 106 ufc mL-1 donde las bacterias pertenecientes a la familia Vibrionacea fueron las más abundantes, cerca de >105 ufc mL-1 . El análisis molecular de la región intergénica entre los genes 16S y 23S rDNA de las diferentes muestras, reveló una gran complejidad bacteriana asociada a S. gigas. Las secuencias de los amplificados del gen rDNA 16S identificó Pseudoalteromonas sp., Halomonas sp., Psycrobacter sp., Cobetia sp., Pseudomonas sp. y Vibrios sp. Nuestros resultados podrían sugerir un rol importante de estas bacterias como componentes de la comunidad asociada al S. gigas. Esta información puede complementar los estudios que se están implementando en los procesos para la conservación y repoblamiento de las poblaciones de S. gigas en Colombia. Palabras clave: Strombus gigas, Caracol pala, Bacteria, Región intergénica 16S-23S, rDNA 16S. ABSTRACT The Queen Conch, Strombus gigas (Strombidae, is a species of great ecological and socioeconomic importance in the Caribbean area of Colombia. However, it is currently catalogued as

  6. The effects of boron in TiAl/Ti3Al

    International Nuclear Information System (INIS)

    Feng, C.R.; Michel, D.J.; Crowe, C.R.

    1989-01-01

    The authors discuss the TiAl/Ti 3 Al interfacial misfit dislocations structures investigated by TEM in Ti-45Al alloy and Ti-45Al/TiB 2 composite. For TiAl with c/a = 1.02, only a single set of misfit dislocation arrays are crystallographically possible; these were observed in Ti-45Al alloy. However, the observation of three sets of misfit dislocation arrays in the Ti-45Al/TiB 2 composite suggests that the occupation of octahedral sites in the TiAl structure by excess boron was responsible for a decrease in the c/a ratio leading to an increased fcc character of the TiAl at the TiAl/Ti 3 Al interface

  7. Opportunity's 'Rub al Khali' Panorama

    Science.gov (United States)

    2005-01-01

    [figure removed for brevity, see original site] Click on the image for Opportunity's 'Rub al Khali' Panorama (QTVR) This panoramic image, dubbed 'Rub al Khali,' was acquired by NASA's Mars Exploration Rover Opportunity on the plains of Meridiani during the period from the rover's 456th to 464th sols on Mars (May 6 to May 14, 2005). Opportunity was about 2 kilometers (1.2 miles) south of 'Endurance Crater' at a place known informally as 'Purgatory Dune.' The rover was stuck in the dune's deep fine sand for more than a month. 'Rub al Khali' (Arabic translation: 'the empty quarter') was chosen as the name for this panorama because it is the name of a similarly barren, desolate part of the Saudi Arabian desert on Earth. The view spans 360 degrees. It consists of images obtained in 97 individual pointings of the panoramic camera. The camera took images with five camera filters at each pointing. This 22,780-by-6,000-pixel mosaic is an approximately true-color rendering generated using the images acquired through filters admitting light wavelengths of 750, 530, and 480 nanometers. Lighting varied during the nine sols it took to acquire this panorama, resulting in some small image seams within the mosaic. These seams have been smoothed in sky parts of the mosaic to better simulate the vista that a person would see if able to view it all at the same time on Mars. Opportunity's tracks leading back to the north (center of the panorama) are a reminder of the rover's long trek from Endurance Crater. The deep ruts dug by Opportunity's wheels as it became stuck in the sand appear in the foreground. The crest and trough of the last ripple the rover crossed before getting stuck is visible in the center. These wind-formed sand features are only about 10 to 15 centimeters (4 to 6 inches) tall. The crest of the actual ripple where the rover got stuck can be seen just to the right of center. The tracks and a few other places on and near ripple crests can be seen in this color image to

  8. Trato verbal paterno al adolescente

    Directory of Open Access Journals (Sweden)

    Rodríguez Juan Carlos

    1995-06-01

    Full Text Available

    En alguna ocasión se ha escuchado una palabra, que causa un sentimiento y a la vez un recuerdo, que lleva a evocar la adolescencia o la infancia, se recuerda quien la pronunciaba y en que ocasión la decía. Este es el poder que tiene una palabra y más aún si es dicha por el padre, puesto que este es la figura significativa que se lleva en la memoria. De aquí nace el interés de realizar un estudio, en donde se describe y analice la percepción y el sentimiento del adolescente, quien en esta etapa es vulnerable al cambio, ya que está buscando su propia identidad; que con el trato verbal paterno la encontrara sin ninguna dificultad o por el contrario nunca la encontrará.

     

  9. Compliance als Schutz vor Verbandsverantwortlichkeit?

    Directory of Open Access Journals (Sweden)

    Alexander Tipold

    2016-05-01

    Full Text Available Compliance bedeutet nicht nur Einhaltung und Beachtung von Vorschriften, sondern betrifft auch Maßnahmen, die die Einhaltung der Rechtsnormen absichern sollen und läuft somit auf eine Übererfüllung von Verpflichtungen hinaus. Wenn es keinen klaren Maßstab für Kontroll- und Überwachungspflichten gibt, besteht die Gefahr, dass Strafverfolgungsbehörden die Compliance-Maßnahmen als Maßstab heranziehen und so eine Verschärfung der Pflichten erzeugen. Nach den Regeln des Verbandsverantwortlichkeitsgesetzes schließt im Übrigen das beste Compliance-System nicht zwingend die Verbandsverantwortlichkeit aus, steht aber unter Umständen einem Verfahren gegen den Verband entgegen.

  10. Orientation of Al3Ti platelets in Al-Al3Ti functionally graded material manufactured by centrifugal method

    International Nuclear Information System (INIS)

    Watanabe, Y.; Fukui, Y.

    1997-01-01

    Al-Al 3 Ti functionally graded materials (FGMs) were manufactured by the centrifugal method with a commercial ingot of Al-5 mass% Ti master alloy. The alloy was melted at a liquid/solid coexisting temperature, at which Al 3 Ti remains as a solid, and then it was cast into a thick-walled ring. It was found that the Al-Al 3 Ti functionally graded material can be successfully fabricated by the centrifugal method. It was also found that the volume fraction of the Al 3 Ti can be increased by repetition of the centrifugal method. Since the shape of Al 3 Ti particles in a commercial alloy ingot is that of a platelet, the Al 3 Ti particles are arranged with their platelet planes nearly perpendicular to the radial direction. The orientation effects become stronger when the G number becomes larger. Although the final centrifugal casting was conducted under a very large centrifugal force for the specimen cast three times, the orientation effects were weaker than those in the specimen cast one time. From these observations, it is concluded that the origin of orientation of Al 3 Ti platelets can be attributed to the angular velocity gradient of the melt along the radial direction produced by the difference in the viscosity. (orig.)

  11. Eutectic microstructures of Al-ThA13 and Al-UA14 alloys

    International Nuclear Information System (INIS)

    Vieira, R.R.; Ambrozio Filho, F.

    1990-01-01

    This paper deals on the microstructures of systems Al-ThAl3 and Al-UAL4, which are composed by a non faceted phase (aluminium) and an intermetallic phase (ThAl3 or UAL4) which is normally faceted phase. (C.M.)

  12. Cryptanalysis of Lin et al.'s Efficient Block-Cipher-Based Hash Function

    NARCIS (Netherlands)

    Liu, Bozhong; Gong, Zheng; Chen, Xiaohong; Qiu, Weidong; Zheng, Dong

    2010-01-01

    Hash functions are widely used in authentication. In this paper, the security of Lin et al.'s efficient block-cipher-based hash function is reviewed. By using Joux's multicollisions and Kelsey et al.'s expandable message techniques, we find the scheme is vulnerable to collision, preimage and second

  13. TEM characterization of Al-C-Cu-Al2O3 composites produced by mechanical milling

    International Nuclear Information System (INIS)

    Santos-Beltran, A.; Gallegos-Orozco, V.; Estrada-Guel, I.; Bejar-Gomez, L.; Espinosa-Magana, F.; Miki-Yoshida, M.; Martinez-Sanchez, R.

    2007-01-01

    Novel Al-based composites (Al-C-Cu-Al 2 O 3 ) obtained by mechanical milling (MM), were characterized by transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS). Analyses of composites were carried out in both, the as-milled and the as-sintered conditions. C nanoparticles were found in the as-milled condition and Al 2 O 3 nanofibers were found in as-sintered products, as determined by EELS. C and Cu react with Al to crystallize in Al 3 C 4 and Al 2 Cu structures, respectively

  14. La "historia de los omeyas de al-Andalus" en los Masalik al-Absar

    OpenAIRE

    Molina, Luis

    2005-01-01

    [ES]Los Masalik al-absar de Ibn Fadl Allah al-`Umari incluyen un breve resumen de la Historia de los omeyas de al-Andalus. En este trabajo se analizan las relaciones textuales entre ese pasaje y el Muqtabis de Ibn Hayyan, crónica que resulta ser la fuente casi única utilizada por al-`Umari para redactar ese capítulo. [EN]The Masalik al-absar by Ibn Fadl Allah al-`Umari contains a brief summary of the Umayyad history in al-Andalus. In this article, the textual relationship between this p...

  15. Atomistic simulations of diffusion mechanisms in off-stoichiometric Al-rich Ni3Al

    International Nuclear Information System (INIS)

    Duan, Jinsong

    2007-01-01

    This paper presents dynamics simulation results of diffusion in off-stoichiometric Al-rich Ni 3 Al (Ni 73 Al 27 ) at temperature ranging from 1300 to 1550 K. The interatomic forces are described by the Finnis-Sinclair type N-body potentials. Particular attention is devoted to the effect of the extra 2% of Al atoms sitting on the Ni sublattice as antisite point defects (Al Ni ) on diffusion. Simulation results show that Ni atoms mainly diffuse through the Ni sublattice at the temperatures investigated. Al atoms diffuse via both the intrasublattice and antistructure bridge (ASB) mechanisms. The contribution to Al diffusion from the ASB mechanism decreases at the lower temperature (T Ni ) enhances both Al and Ni diffusion in Ni 73 Al 27 . The Ni-Al coupled diffusion effect is observed and understood at the atomic level for the first time

  16. Piezo-tunnel effect in Al/Al2O3/Al junctions elaborated by atomic layer deposition

    Science.gov (United States)

    Rafael, R.; Puyoo, E.; Malhaire, C.

    2017-11-01

    In this work, the electrical transport in Al/Al2O3/Al junctions under mechanical stress is investigated in the perspective to use them as strain sensors. The metal/insulator/metal junctions are elaborated with a low temperature process (≤200 °C) fully compatible with CMOS back-end-of-line. The conduction mechanism in the structure is found to be Fowler-Nordheim tunneling, and efforts are made to extract the relevant physical parameters. Gauge factors up to -32.5 were found in the fabricated devices under tensile stress. Finally, theoretical mechanical considerations give strong evidence that strain sensitivity in Al/Al2O3/Al structures originates not only from geometrical deformations but also from the variation of interface barrier height and/or effective electronic mass in the tunneling oxide layer.

  17. Al-Qurû’ fi Al-Qur’an ‘Inda Al-Anbary fi Al-Adhdâd

    Directory of Open Access Journals (Sweden)

    Raushani Azza

    2018-03-01

    Full Text Available This study examines about the term al-Qurû in the Qur’an. Al-Qurû is one of the most popular discussions among muslim scholars and mufasir, both in terms of language and fiqh. However, there is a bate among muslim scholar and mufasir about the meaning of al-Qurû. It’s because al-Qurû is one of the sentence of al-Adhdâd wich has two meaning, especially in the Qur’an, namely haid (menstruation and thahr. One of the most popular muslim scholar who concern in Qur’an and Arabic is al-Anbari with his book al-Adhdâd. Al-Anbari explains that Qurû has two meanings, First, al-Qurû in etymology is the form of Jama’ from aqra and qurû. Second, al-Qurû has a meaning of menstruation, thahr, or the period of iddah as a sign of being allowed to remarry after certain period of time.

  18. Interfacial phenomena in the reactions of Al-B, Al-Ti-B, and Al-Zr-B alloys with KF-AlF3 and NaF-AlF3 melts

    International Nuclear Information System (INIS)

    Lee, M.S.; Terry, B.S.; Grieveson, P.

    1993-01-01

    The interfacial phenomena occurring during the contacting of liquid Al-B, Al-Ti-B, and Al-Zr-B melts with KF-AlF 3 liquid fluxes have been investigated by optical examination of quenched metal drops previously immersed in the liquid fluxes. Reactions in the Al-B/KF-AlF 3 system involve the formation of metastable AlB 12 at the metal/flux interface. At high KBF 4 levels in the flux, the AlB 12 is dispersed in the flux and also at low KBF 4 levels in the metal. Reactions in the Al-Ti-B/KF-AlF 3 system involve the formation of TiB 2 , which may be dispersed in either the metal or the flux depending upon the composition of the flux. The results obtained for the Al-Ti-B/NaF-AlF 3 and Al-Zr-B/KF-AlF 3 systems were similar to those observed for the Al-Ti-B/KF-AlF 3 system

  19. Al-Si/Al2O3 in situ composite prepared by displacement reaction of CuO/Al system

    Directory of Open Access Journals (Sweden)

    Zhang Jing

    2010-02-01

    Full Text Available Al2O3 particle-reinforced ZL109 composite was prepared by in situ reaction between CuO and Al. The microstructure was observed by means of OM, SEM and TEM. The Al2O3 particles in sub-micron sizes distribute uniformly in the matrix, and the Cu displaced from the in situ reaction forms net-like alloy phases with other alloy elements. The hardness and the tensile strength of the composites at room temperature have a slight increase as compared to that of the matrix. However, the tensile strength at 350 ℃ has reached 90.23 MPa, or 16.92 MPa higher than that of the matrix. The mechanism of the reaction in the CuO/Al system was studied by using of differential scanning calorimetry(DSC and thermodynamic calculation. The reaction between CuO and Al involves two steps. First, CuO reacts with Al to form Cu2O and Al2O3 at the melting temperature of the matrix alloy, and second, Cu2O reacts with Al to form Cu and Al2O3 at a higher temperature. At ZL109 casting temperature of 750–780 ℃, the second step can also take place because of the effect of exothermic reaction of the first step.

  20. Plastic deformation of Al13Fe4 particles in Al-Al13Fe4 by high-speed compression

    International Nuclear Information System (INIS)

    Yoneyama, N.; Mizoguchi, K.; Kumai, S.; Sato, A.; Kiritani, M.

    2003-01-01

    Spray-formed Al-Fe alloys having undergone high-speed deformation were examined under a high-voltage electron microscope. Two types of specimens were examined; one containing fine Al 13 Fe 4 particles, and the other containing large particles. In the former specimen, deformation is found to proceed in three patterns, depending on specimen thickness and strain rate: (1) without deformation of the Al 13 Fe 4 ; (2) breaking of the Al 13 Fe 4 ; or (3) melting of the Al 13 Fe 4 . Local melting is found to alter some of the Al 13 Fe 4 particles, to impart five-fold symmetry in diffraction or an amorphous structure. In the latter specimen, introduction of glide dislocations enabled us to determine a shear system in the mc102 monoclinic c2/m crystal of Al 13 Fe 4 . On the bases of these observations, the mechanism of high-speed deformation is discussed while taking into account the highly stressed and/or heated states of Al 13 Fe 4 embedded in Al matrix

  1. Entrevista al narrador Tommaso Pincio

    Directory of Open Access Journals (Sweden)

    Franco Zangrilli

    2016-07-01

    Full Text Available El autor Tommaso Pincio, seudónimo di Marco Colapietro (Roma, 1963, es sin lugar a dudas uno de los narradores de mayor proyección en el panorama literario de los últimos tiempos. Iniciada su carrera en 1999 con M., ha publicado títulos como Lo spazio sfinito (2000 y Un amore dell'altro mondo (2002, en el que narra la vida de Kurt Cobain, líder del grupo Nirvana, a través de la visión de un amigo imaginario. A estas dos novelas siguieron La ragazza che non era lei (2005, Gli alieni (2006 o Cinacittà. Memorie del mio delitto efferato (2008, ambientada en una Roma colonizada por los chinos y abandonada por los mismos romanos a causa de problemas medioambientales. Títulos como L'hotel a zero stelle (2011, un ensayo autobiográfico en el que plantea diálogos ficticios con algunos de los grandes nombres de la literatura o la más reciente Panorama (2015, le han hecho valerse un hueco provilegiado entre los nuevos narradores surgidos en estas primeras décadas de siglo. Justamente la publicación de esta última novela, Panorama, ha servido de excusa al profesor Franco Zangrilli, gran conocedor de su obra, a plantearle algunas preguntas sobre temas clave de su producción.

  2. Comentario al libro: ACADEMIA MUTISIANA

    Directory of Open Access Journals (Sweden)

    Efraím Otero Ruiz

    2012-04-01

    Full Text Available Por tercera vez en un quinquenio ocupo este podio para ocuparme de uno de los libros del grupo de inmunogenética (o de anti-inmunohistoria, diría yo de la Universidad Javeriana, esta vez enriquecido con la presencia del P. Ortiz Valdivieso, orquídeologo y mutisiólogo y del Dr. Uribe Angel notable historiador educativo, y presentado admirablemente por el P. Durán Casas, Vicerrector Académico de la Universidad Javeriana. En el prólogo, citando desde Sarton y Ziman en los 70s. hasta Mauro Torres en el 2011 afirmo que, aunque suene extraño, parece como si las Academias florecieran entre las guerras. Tal sucedió con la de Platón, “la máxima institución de enseñanza superior surgida en el mundo”, -al decir de Sartonenmarcada desde las guerras del Peloponeso, hasta el final de la dominación espartana de Atenas en el siglo IV antes de Cristo. Según dichos autores, las Academias han simbolizado una manera de continuar la vida espiritual entre uno y otro conflicto.

  3. Estudios de la comunidad de coleópteros coprófagos (Scarabaeidae en un remaente de bosque seco al norte del Tolima, Colombia

    Directory of Open Access Journals (Sweden)

    Escobar S. Federico

    1997-11-01

    Full Text Available This paper presents information about the dung beetle community in altered landscapes in northern Tolima, Colombia. The studies were carried out in hill forest, creek forest, forest edge and pastures in the dry season, and in hill forest and creek forest in the rainy season. 3538 inividuals of 30 species in 4 subfamilies were captured. Changes in the species abundance between sampling periods were found. Differences in species composition between zones with forest cover and pasture were recorded, as well as changes in the guild structure, with endocoprids prevailing in pasture and edge habitats.Se presenta información sobre la comunidad de coleópteros coprófagos en un remanente de bosque seco al norte del Tolima, caracterizado por una alta transformación del paisaje. Se realizó un muestreo en la época seca y otro en época lluviosa; en la época seca se realizaron colecciones en bosque de cerro, bosque de cañada, borde de bosque y potrero, en la época lluviosa en bosque de cañada y bosque de cerro. Se capturaron un total de 3538 individuos pertenecientes a 30 especies en 4 subfamilias. Se registraron cambios en la abundancia de las especies entre los períodos de muestreo y en la composición de especies entre zonas con cobertura boscosa y potreros. También se detectaron cambios en la estructura de los gremios, observándose un incremento de las especies de hábitos endocópridos en el borde de bosque y en potrero.

  4. Reading Abdallāh b. Abdallāh al-Tarjumān’s Tuḥfa (1420 in the Ottoman Empire: Muslim-Christian Polemics and Intertextuality in the Age of “Confessionalization”

    Directory of Open Access Journals (Sweden)

    Krstić, Tijana

    2015-12-01

    recepción por el público letrado otomano y, finalmente, su impacto en el desarrollo del género de polémica otomana en las narrativas de conversión al Islam. En el apéndice de este artículo se incluye una transcripción y traducción de esa narrativa, que parece estar directamente influida por la Tuḥfa. Mediante el estudio de la trayectoria de un único texto perteneciente al género de la polémica religiosa, este artículo evita las discusiones académicas, tradicionalmente desconectadas entre sí porque estudian la historia moderna ibérica, norte africana y otomana de forma separada, demostrando así su íntima conexión en la época de polarización confesional (ss. XVI y XVII.

  5. Structural features in Ni-Al alloys

    International Nuclear Information System (INIS)

    Abylkalykova, R.B.; Kveglis, L.I.; Rakhimova, U.A.; Nasokhova, Sh.B.; Tazhibaeva, G.B.

    2007-01-01

    Purpose of the work is study of structural transformations under diverse memory effect in Ni-Al alloys. Examination were conducted in following composition samples: Ni -75 at.% and Al - 25 at.%. The work is devoted to clarification reasons both formation atom-ordered structures in inter-grain boundaries of bulk samples under temperature action and static load. Revealed inter-grain inter-boundary layers in Ni-Al alloy both bulk and surface state have complicated structure

  6. Fabrication of AlN-TiC/Al composites by gas injection processing

    Institute of Scientific and Technical Information of China (English)

    YU Huashun; CHEN Hongmei; MA Rendian; MIN Guanghui

    2006-01-01

    The fabrication of AlN-TiC/Al composites by carbon-and nitrogen-containing gas injection into Al-Mg-Ti melts was studied. It was shown that AlN and TiC particles could be formed by the in situ reaction of mixture gas (N2+C2H2+NH3) with Al-Mg-Ti melts. The condition for the formation of AlN was that the treatment temperature must be higher than 1373 K, and the amounts of AlN and TiC increased with the increase of the treatment temperature and the gas injection time.It was considered that AlN was formed by the direct reaction of Al with nitrogen-containing gas at the interface of the gas bubble and the melt. However, the mechanism of TiC formation is a combination mechanism of solution-precipitation and solid-liquid reaction.

  7. Electrodeposition of Al from a 1-butylpyrrolidine-AlCl3 ionic liquid

    Directory of Open Access Journals (Sweden)

    Giridhar Pulletikurthi

    2015-12-01

    Full Text Available The addition of 1-butylpyrrolidine to AlCl3 results in the formation of an electrolyte that is suited to Al deposition. The feasibility of electrodepositing Al from the synthesized electrolyte was investigated. Several compositions of AlCl3 and 1-butylpyrrolidine were prepared for this purpose. These mixtures show a different phase behavior at various compositions of AlCl3 and 1-butylpyrrolidine. IR, Raman and NMR spectroscopy were employed to characterize the synthesized liquids. Among the prepared compositions, 1:1.2 mol ratio of 1-butylpyrrolidine:AlCl3 and the upper phase of 1:1.3 mol ratio of 1-butylpyrrolidine:AlCl3 were found to be suitable for Al electrodeposition at room temperature (RT. Uniform and thick (~µm thick layers of Al were obtained on copper at RT. Al deposition occured from the cationic species of AlCl3−xLy+ (where x≤2, y=1–2, and L=1-butylpyrrolidine in this electrolyte. This behavior is contrary to the well investigated classic AlCl3 based ionic liquids, where the deposition of Al occurs mainly from anionic Al2Cl7− ions.

  8. Superbend era begins swiftly at the ALS

    Energy Technology Data Exchange (ETDEWEB)

    Robinson, Art; Tamura, Lori

    2001-11-29

    The successful installation and commissioning of high-field superconducting bend magnets (superbends) in three curved sectors of ALS storage ring was the first time the magnet lattice of an operating synchrotron light source has been retrofitted in this fundamental way. As a result, the ALS now offers an expanded spectral range well into the hard x-ray region without compromising either the number of undulators or their high brightness in the soft x-ray region for which the ALS design was originally optimized. In sum, when the superbend-enhanced ALS started up for user operations in October 2001, it marked the beginning of a new era in its history.

  9. Referral bias in ALS epidemiological studies.

    Science.gov (United States)

    Logroscino, Giancarlo; Marin, Benoit; Piccininni, Marco; Arcuti, Simona; Chiò, Adriano; Hardiman, Orla; Rooney, James; Zoccolella, Stefano; Couratier, Philippe; Preux, Pierre-Marie; Beghi, Ettore

    2018-01-01

    Despite concerns about the representativeness of patients from ALS tertiary centers as compared to the ALS general population, the extent of referral bias in clinical studies remains largely unknown. Using data from EURALS consortium we aimed to assess nature, extent and impact of referral bias. Four European ALS population-based registries located in Ireland, Piedmont, Puglia, Italy, and Limousin, France, covering 50 million person-years, participated. Demographic and clinic characteristics of ALS patients diagnosed in tertiary referral centers were contrasted with the whole ALS populations enrolled in registries in the same geographical areas. Patients referred to ALS centers were younger (with difference ranging from 1.1 years to 2.4 years), less likely to present a bulbar onset, with a higher proportion of familial antecedents and a longer survival (ranging from 11% to 15%) when compared to the entire ALS population in the same geographic area. A trend for referral bias is present in cohorts drawn from ALS referral centers. The magnitude of the possible referral bias in a particular tertiary center can be estimated through a comparison with ALS patients drawn from registry in the same geographic area. Studies based on clinical cohorts should be cautiously interpreted. The presence of a registry in the same area may improve the complete ascertainment in the referral center.

  10. Decoding ALS: From Genes to Mechanism

    Science.gov (United States)

    Taylor, J. Paul; Brown, Robert H.; Cleveland, Don W.

    2017-01-01

    Preface Amyotrophic lateral sclerosis (ALS) is a progressive and uniformly fatal neurodegenerative disease. A plethora of genetic factors underlying ALS have now been identified that drive motor neuron degeneration, increase susceptibility to the disease, or influence the rate of progression. Emerging themes include dysfunction in RNA metabolism and protein homeostasis, with specific defects in nucleocytoplasmic trafficking, induction of endoplasmic reticulum stress, and impaired dynamics of ribonucleoprotein bodies such as RNA granules that assemble through the process of liquid-liquid phase separation. Extraordinary recent progress in understanding the biology of ALS provides new grounds for optimism that meaningful therapies for ALS will be identified. PMID:27830784

  11. Genetics of Familial and Sporadic ALS

    Science.gov (United States)

    2018-03-27

    Amyotrophic Lateral Sclerosis (ALS); Familial Amyotrophic Lateral Sclerosis; Amyotrophic Lateral Sclerosis With Frontotemporal Dementia; Lou Gehrig's Disease; Motor Neuron Disease; Primary Lateral Sclerosis

  12. PEMAHAMAN HADITS TARBAWI BURHAN AL ISLAM AL ZARNUJI DALAM KITAB TA’LIM AL MUTA’ALLIM

    Directory of Open Access Journals (Sweden)

    Benny Afwadzi

    2017-01-01

    Full Text Available This paper explores the understanding of tarbawi (education hadith from one of the major influential clerics in the Islamic educational system, especially in pesantren. He is Burhan al Islam al Zarnuji with his landmark book Ta’lim al Muta’allim. The conclusion that can be drawn is that al Zarnuji has shades of sufistical view in understanding tarbawi hadith. This can be seen in his understanding of hadith on obligation to seek knowledge (thalab al ilmi faridhatun ‘ala kulli muslimin wa muslimatin, which is interpreted as ilm al hal, the science concerning the condition of the human religious or simplistically said as the religious sciences; and the hadith of intention of studying (innama al a’malu bi al niyyat with the intention for the sake of the hereafter and religion, not mundane. Such an understanding is not something taken for granted, but it can be reinterpreted and perfected in accordance with the spirit of the times of context.

  13. The code of light: al-ghazali and al-suhrawardi

    OpenAIRE

    Gediminaitė, Barbora

    2017-01-01

    The Code of Light: Al-Ghazali and Al-Suhrawardi The Bachelor’s thesis The Code of Light in Islam: al-Ghazali and al-Suhrawardi presents a comparative study of light. The study analyses the philosophical systems of al-Ghazali and al-Suhrawardi through the reconstruction of the image of light and its operation principles. The main subject of the thesis are the attributes of light. The main problem of the research is the semantics and contextuality of light in Islamic theology and philosophy. Th...

  14. Formation of AlFeSi phase in AlSi12 alloy with Ce addition

    Directory of Open Access Journals (Sweden)

    S. Kores

    2012-04-01

    Full Text Available The influence of cerium addition on the solidification sequence and microstructure constituents of the Al-Si alloys with 12,6 mass % Si was examined. The solidification was analyzed by a simple thermal analysis. The microstructures were examined with conventional light and scanning electron microscopy. Ternary AlSiCe phase was formed in the Al-Si alloys with added cerium during the solidification process. AlSiCe and β-AlFeSi phases solidified together in the region that solidified the last. Cerium addition influenced on the morphology of the α-AlFeSi phase solidification.

  15. Os Objetivos de Desenvolvimento do Milênio e as ações voluntárias: em questão os esforços individuais e o processo de individualização

    Directory of Open Access Journals (Sweden)

    Maria José de Rezende

    2008-01-01

    de las acciones y de los agentes más adecuados para que sean efectivas las prácticas y formas de actuar, que permitan alcanzar los denominados ODMs (Objetivos de Desenvolvimiento del Milenio. En este artículo serán consideradas las discusiones, las propuestas, las direcciones, los procedimientos de programas vinculados (PNUD, UNV a la ONU, en relación con el papel del voluntariado en la expansión de acciones que eleven el número de per so nas involucradas en los ODMs. Se trata de comprender los efectos sociales y políticos, en este modo de atribuir al voluntariado un peso expresivo, en un contexto de múltiples tentativas de exonerar al Estado de su papel y de las luchas sociales, dentro de este proceso de construcción de mecanismos de combate a la pobreza absoluta y los males sociales.

  16. Tadris Al Mufradat Li Tathbiq Maharah Al Kalam Fi Madrasah Al Muallimin Al Islamiyyah Li Mahad Bait Al Arqam Balong Jember

    Directory of Open Access Journals (Sweden)

    Muhammad Ardy Zaini

    2017-06-01

    Full Text Available There are four  skills in teaching Arabic. Ie listening, speaking, reading, and writing. Among these four, speaking considered one of the most important objectives of learning foreign language. In order to speak properly, one must know the vocabulary and apply it in a sentence. The aims of this research is to describe the teaching of vocabulary to apply the speaking skill in the school of Islamic teachers in the Institute of Bait al Arqom Balong Jember. This study used qualitative approach. The data collection was taken trough observation, personal interview, history and documentation. The teaching of vocabulary to apply the speaking skill at the Islamic Teachers' School at the Institute of Bait Al Arqam Balong Jember has gone well in terms of planning (general objectives and specific objectives, implementation (materials, use of the teaching method and teaching aids, and evaluation (assessment and evaluation. This teaching is to apply the speaking skill in terms of conversation or dialogue and lecture.

  17. Kritik al-Ghazali terhadap Kekekalan Alam

    Directory of Open Access Journals (Sweden)

    Sahidi Mustafa

    2015-09-01

    Full Text Available The concept of the creation of universe offered by Neo-Platonism philosopher such as al-Kindi, al-Farabi, and Ibnu Sina are philosophical concept existed and came as an early moment of development of Islamic philosophy interrelated to God, ultimately about his Existence and Characteristics. One of the topics is how God created the universe. According to al-Farabi and Ibnu Sina, God created this universe by way of emanation in order to prevent Himself from the new attitudes. Consequently, universe has eternal feature (qadim as God as well, in the case of everything overflowed from qadim is also qadim. Al-Ghazali refuted this theory because it contradicted with al Qur’an’s thought which clearly explained that God created the entire universe. The universe should not qadim and it means that God existed in the first, and then created universe later as we know today. On the contrary, in the view of Muslim philosopher, the universe should be qadim because God created it from all eternity. For them, it is impossible that God existed by Himself without any creation before. God, according to them is impossible to be changed, so that is impossible as well if God changed from did not create yet before and then creates. Al-Ghazali persistently opposed the concept of eternity. Al Ghazali saw if this universe is qadim so it is impossible that universe created by God. The concept of qadim will led to the conclusion that universe born by itself, it was not created by God. This critique has been written by al-Ghazali in Tahafut al-Falasifah. This paper will present the concept of eternity which was discussed by al-Farabi and Ibn Sina and al Ghazali’s critique toward it as well.

  18. ALS and other motor neuron diseases.

    Science.gov (United States)

    Tiryaki, Ezgi; Horak, Holli A

    2014-10-01

    This review describes the most common motor neuron disease, ALS. It discusses the diagnosis and evaluation of ALS and the current understanding of its pathophysiology, including new genetic underpinnings of the disease. This article also covers other motor neuron diseases, reviews how to distinguish them from ALS, and discusses their pathophysiology. In this article, the spectrum of cognitive involvement in ALS, new concepts about protein synthesis pathology in the etiology of ALS, and new genetic associations will be covered. This concept has changed over the past 3 to 4 years with the discovery of new genes and genetic processes that may trigger the disease. As of 2014, two-thirds of familial ALS and 10% of sporadic ALS can be explained by genetics. TAR DNA binding protein 43 kDa (TDP-43), for instance, has been shown to cause frontotemporal dementia as well as some cases of familial ALS, and is associated with frontotemporal dysfunction in ALS. The anterior horn cells control all voluntary movement: motor activity, respiratory, speech, and swallowing functions are dependent upon signals from the anterior horn cells. Diseases that damage the anterior horn cells, therefore, have a profound impact. Symptoms of anterior horn cell loss (weakness, falling, choking) lead patients to seek medical attention. Neurologists are the most likely practitioners to recognize and diagnose damage or loss of anterior horn cells. ALS, the prototypical motor neuron disease, demonstrates the impact of this class of disorders. ALS and other motor neuron diseases can represent diagnostic challenges. Neurologists are often called upon to serve as a "medical home" for these patients: coordinating care, arranging for durable medical equipment, and leading discussions about end-of-life care with patients and caregivers. It is important for neurologists to be able to identify motor neuron diseases and to evaluate and treat patients affected by them.

  19. Optical phonon scattering on electronic mobility in Al2O3/AlGaN/AlN/GaN heterostructures

    Science.gov (United States)

    Zhou, X. J.; Qu, Y.; Ban, S. L.; Wang, Z. P.

    2017-12-01

    Considering the built-in electric fields and the two-mode property of transverse optical phonons in AlGaN material, the electronic eigen-energies and wave functions are obtained by solving Schrödinger equation with the finite difference method. The dispersion relations and potentials of the optical phonons are given by the transfer matrix method. The mobility of the two dimensional electron gas influenced by the optical phonons in Al2O3/AlGaN/AlN/GaN heterostructures is investigated based on the theory of Lei-Ting force balance equation. It is found that the scattering from the half-space phonons is the main factor affecting the electronic mobility, and the influence of the other phonons can be ignored. The results show that the mobility decreases with increasing the thicknesses of Al2O3 and AlN layers, but there is no definite relationship between the mobility and the thickness of AlGaN barrier. The mobility is obviously reduced by increasing Al component in AlGaN crystal to show that the effect of ternary mixed crystals is important. It is also found that the mobility increases first and then decreases as the increment of the fixed charges, but decreases always with increasing temperature. The heterostructures constructed here can be good candidates as metal-oxide-semiconductor high-electron-mobility-transistors since they have higher electronic mobility due to the influence from interface phonons weakened by the AlN interlayer.

  20. Experimental investigation of the Al-Y phase diagram

    International Nuclear Information System (INIS)

    Liu Shuhong; Du Yong; Xu Honghui; He Cuiyun; Schuster, Julius C.

    2006-01-01

    The Al-Y phase diagram has been reinvestigated with 16 key alloys over its whole composition range by means of differential thermal analysis, X-ray diffraction, optical microscopy, and scanning electron microscopy with energy dispersive X-ray techniques. The existence of five intermetallic phases, Al 3 Y, Al 2 Y, AlY, Al 2 Y 3 , and AlY 2 , has been confirmed. Al 2 Y and Al 2 Y 3 melt congruently at 1490 ± 2 and 1105 ± 2 deg. C, respectively. Al 3 Y, AlY, and AlY 2 are formed via the peritectic reactions L + Al 2 Y ↔ Al 3 Y at 980 ± 2 deg. C, L + Al 2 Y ↔ AlY at 1138 ± 2 deg. C, and L + Al 2 Y 3 ↔ AlY 2 at 977 ± 2 deg. C, respectively. Three eutectic reactions L ↔ (Al) + Al 3 Y at 637 ± 2 deg. C, L ↔ AlY + Al 2 Y 3 at 1081 ± 2 deg. C, and L ↔ AlY 2 + (αY) at 955 ± 2 deg. C , are observed. The previously reported Al 3 Y 5 , AlY 3 compounds were not found. A revised Al-Y phase diagram is presented mainly based on the present experimental results

  1. Estrategia para mejorar el acceso al tratamiento etiológico para la enfermedad de Chagas en el primer nivel de atención en Argentina

    Directory of Open Access Journals (Sweden)

    Karen Klein

    2017-05-01

    Full Text Available RESUMEN Objetivo Mejorar la distribución del tratamiento etiológico para la enfermedad de Chagas mediante la identificación de barreras para su descentralización al primer nivel de atención en Argentina. Métodos Se llevó a cabo un estudio cualitativo, de carácter exploratorio y descriptivo, en base a entrevistas semiestructuradas a actores clave pertenecientes al Programa Nacional de Chagas y miembros de los equipos de salud del primer nivel de atención con el objetivo de identificar barreras para el diagnóstico y tratamiento de la enfermedad de Chagas en diferentes niveles (administrativo, efectores de salud y comunidad que podrían afectar una estrategia descentralizada de distribución. Además, se implementó un piloto de descentralización en diez centros de atención primaria en una provincia argentina. Resultados Se realizaron 22 entrevistas semiestructuradas con responsables de programas y profesionales de la salud. Los principales obstáculos hallados fueron la falta de búsqueda sistemática de casos, la poca articulación entre los niveles de atención y los actores del sistema de salud, la falta de capacitación del equipo de salud respecto al tratamiento, el seguimiento de los pacientes y las barreras asociadas a los pacientes. Se llevó a cabo un programa piloto de descentralización y se evaluaron estrategias para optimizar la intervención a gran escala. Conclusiones Los resultados permitieron mejorar la implementación del plan de descentralización del tratamiento a través de una mejor articulación interprogramática, la capitalización de herramientas de monitoreo y de comunicación ya existentes, y la sensibilización de los equipos de salud. Además, se formularon recomendaciones tendientes a mejorar el diagnóstico y el tratamiento de la enfermedad de Chagas.

  2. Comportamiento del bajo peso al nacer en la parroquia "Castor Nieves Ríos" Behavior of low birth weight in the "Castor Nieves Ríos" parish church

    Directory of Open Access Journals (Sweden)

    Yarelis González Pantoja

    2010-09-01

    Full Text Available INTRODUCCIÓN: el bajo peso al nacer constituye un problema multifactorial que afecta a muchos países del mundo. OBJETIVO: identificar los factores maternos que se relacionan con el bajo peso al nacer en la parroquia Castor Nieves Ríos. MÉTODOS: se realizó un estudio descriptivo transversal de los 32 nacimientos con bajo peso ocurridos en la maternidad del Hospital Público "José María Benítez", pertenecientes a la parroquia "Castor Nieves Ríos", en el 1er. semestre de 2006. Se revisaron las historias obstétricas de las madres, y se identificaron algunas variables sociodemográficas. RESULTADOS: el 90,62 % de los nacimientos con bajo peso correspondían a madres que fumaron durante la gestación. El 53,1 % de ellas, tuvo un parto pretérmino; el 40,62 % presentó anemia durante este período, y el 59,3 % de las gestantes tuvo una ganancia de peso insuficiente. CONCLUSIONES: el bajo peso al nacer estuvo determinado por el hábito de fumar, parto pretérmino, anemia, así como ganancia insuficiente de peso durante la gestación.INTRODUCTION: the low birth weight is multifactorial problem affecting many countries in the world. OBJECTIVE: to identify the maternal factors related to low birth weight in the "Castor Nieves Ríos" parish church. METHODS: a cross-sectional and descriptive study was conducted of 32 low birth weight births occurred in the "José María Benítez" Public Maternity Hospital during the 1st semester of 2006. The mother's obstetrical histories were reviewed and some sociodemographic variables were identified. RESULTS: the 90,62 % of low birth weight births corresponded to smoker mothers during pregnancy. The 53,1 % of them had a preterm labor; the 40,62 % had anemia during this period, and the 59,3 % of pregnants had a insufficient weight gain. CONCLUSIONS: the low birth weight was determined by smoking, preterm labor, anemia, as well as a insufficient weight gain during pregnancy.

  3. Propuesta de diseño y elaboración de un CD interactivo, para reforzar el proceso de aprendizaje de los números en el área de Matemática en el cuarto año de Educación General Básica en el Centro de Educación Fiscal de Básica Antonio Granda Centeno, de la parroquia Río Blanco, perteneciente al cantón Morona, provincia de Morona Santiago, periodo lectivo 2011-2012

    OpenAIRE

    Vera Vera, Nanci Lorena Mercedes; Andrade Cazar, Yasmina Vanessa

    2013-01-01

    Para nuestro caso educativo, las TIC´S son herramientas teórico conceptuales, soportes y canales que procesan, almacenan, sintetizan, recuperan y presentan información de la forma más variada. El uso de las TIC representa una variación notable en la sociedad y a la larga un cambio en la educación, en las relaciones interpersonales y en la forma de difundir y generar conocimientos. Por tanto, la creación de un CD interactivo para favorecer el proceso de aprendizaje de la matemática permitir...

  4. Explosive destruction of "2"6Al

    International Nuclear Information System (INIS)

    Kahl, D.; Yamaguchi, H.; Shimizu, H.

    2016-01-01

    The γ-ray emission associated with the radioactive decay of "2"6Al is one of the key pieces of observational evidence indicating stellar nucleosynthesis is an ongoing process in our Galaxy, and it was the first such radioactivity to be detected. Despite numerous efforts in stellar modeling, observation, nuclear theory, and nuclear experiment over the past four decades, the precise sites and origin of Galactic "2"6Al remain elusive. We explore the present experimental knowledge concerning the destruction of "2"6Al in massive stars. The precise stellar rates of neutron-induced reactions on "2"6Al, such as (n,p) and (n,α), have among the largest impacts on the total "2"6Al yield. Meanwhile, reactions involving the short-lived isomeric state of "2"6Al such as radiative proton capture are highly-uncertain at present. Although we presented on-going experimental work from n TOF at CERN with an "2"6Al target, the present proceeding focuses only on the "2"6Al isomeric radioactive beam production aspect and the first experimental results at CRIB.

  5. Handlung und Kommunikation als Grundbegriffe der Soziologie

    NARCIS (Netherlands)

    Martens, W.P.M.; Albert, H.; Greshoff, R.; Schützeichel, R.

    2010-01-01

    Handlung und Kommunikation gelten in der Soziologie manchmal als alternative, konkurrierende Grundbegriffe für die Beschreibung und Erklärung sozialer Zusammenhänge (siehe u.a. Luhmann 1984; 1990; Schneider 1994; Stichweh 2000; Greshoff 1999; Schwinn 2001; Albert et. al. 2003). Eine Soziologie,

  6. Kus on al-Zarqawi? / Aadu Hiietamm

    Index Scriptorium Estoniae

    Hiietamm, Aadu, 1954-

    2005-01-01

    Suurbritannia nädalalehe Sunday Times andmetel on Iraagi tagaotsituim mässaja, terrorivõrgustiku al Qaeda liitlane Abu-Musab al-Zarqawi pärast USA raketirünnakus haavatasaamist riigist põgenenud

  7. Miércoles al cine

    OpenAIRE

    Aguado Franco, Juan Carlos

    2014-01-01

    Se analiza un caso concreto de demanda ante una iniciativa empresarial: los miércoles al cine. Se analiza un caso concreto de demanda ante una iniciativa empresarial: los miércoles al cine. Fundamentos del Análisis Económico

  8. Oke et al 2 (12).cdr

    African Journals Online (AJOL)

    Timothy Ademakinwa

    The study revealed that PES contained calcium, aluminum, and iron as part of its major components. 2+. 2+ ... carbon (Chan et al., 1994) , chitosan (Schmub et al., .... (1.735 g of nickel chloride) in 200 ml of distilled. ÷. ÷. ר. צ. ח. ח. ט. ז. -. = 1. 2. 1. 100. (%). W. W. W. Mc. ÷. ÷. ר. צ. ח. ח. ט. ז. -. = 2. 3. 2. 100. (%). W. W. W. VS. ÷. ÷.

  9. Abdullah G M Al-Sehemi

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Chemical Sciences. Abdullah G M Al-Sehemi. Articles written in Journal of Chemical Sciences. Volume 121 Issue 6 November 2009 pp 983-987. Multifunctional switches based on bis-imidazole derivative · Abdullah M A Asiri Gameel A Baghaffar Khadija O Badahdah Abdullah G M Al-Sehemi ...

  10. Primary (AL) amyloidosis with gastrointestinal involvement

    DEFF Research Database (Denmark)

    Madsen, Lone Galmstrup; Gimsing, Peter; Schiødt, Frank V

    2009-01-01

    OBJECTIVE: Immunoglobulin light-chain (AL) amyloidosis is a rare disease that can affect several organs. The aim of this study was to characterize patients with gastrointestinal manifestations of AL amyloidosis, in terms of symptoms, biochemistry, and outcome. MATERIAL AND METHODS: Retrospectivel...

  11. Kultur als Ordnungshypothese über Raum?

    OpenAIRE

    Klüter, Helmut

    2009-01-01

    Inhalt: 1 Einleitung 2 Zur Attraktivität von Kultur 3 Kulturologische Methodik 4 Schnittmengen mit und Bindearme zur Kulturgeographie 5 Kritische Argumente gegen Kultur als Ordnungshypothese über Raum 6 Räumliche Abstraktion als Ordnungsstrategie über „Kultur“? 7 Zusammenfassung

  12. Al-Biruni: A Muslim Critical Thinker

    Directory of Open Access Journals (Sweden)

    Mohammad Noviani Ardi

    2016-03-01

    Full Text Available As an academic course, critical thinking has emerged in the last century as the one of the important subjects, especially in the second half. But as a kind of thinking and a process of the human reason, it was exist as old as mankind. What are known, nowadays, as (standards of critical thinking or (characteristic of critical thinker were used by some ancient Greek philosophers, e.g. Socrates, Aristotle, as well as great Muslim scholars, e.g. al-Biruni, al-Ghazali, etc. al-Biruni was known as a great Muslim scholar due to objectively scientific method in his works. Moreover, he also was famed in comparative religion which early in history of discipline of comparative religion. However, this study attempts to talk about al-Biruni, one of greatest Muslim scholar in history from another side of previously discussion. It is tries to analyze al-Biruni as a Muslim critical thinker based on his monumental work of Tahqiq ma li al-Hind min Maqulah Maqbulah fi al-‘Aql aw Mardhulah or it is known by Kitab al-Hind.

  13. Studies on SiC(p) reinforced Al-Al sub 3 Ni eutectic matrix composites

    International Nuclear Information System (INIS)

    Masrom, A.K.; Foo, L.C.; Ismail, A.B.

    1996-01-01

    An investigation on processing of Al-5.69wt% Ni eutectic with SiC particulate composites is reported. The intermetallic composites are prepared by elemental powder metallurgy route and sintered at two different temperatures, i.e., 600 degree C and 620 degree C. Results show that the metal matrix was Al-Al sub 3 Ni eutectic. The phase analysis by XRD identified the presence of Al sub 3 Ni and Al as dominant phases together with silicon and Al sub 4 C sub 3 phase as minor phases. The Al sub 4 C sub 3 and Si phases are formed during sintering due to SiC-Al interface reaction. SEM micrographs also reveal the formation of microvoid surrounding the SiC particle

  14. Data supporting Al-Abed et al., Environ. Sci.: Nano, 2016,

    Data.gov (United States)

    U.S. Environmental Protection Agency — Data files representing each of the Figures and Tables published in Al-Abed et al., Environ. Sci.: Nano, 2016, 3, 593. The data file names identify the Figure or...

  15. Konsepsi Ibnu Jarir Al-Tabari Tentang Al-Qur’an, Tafsir Dan Ta’wil

    Directory of Open Access Journals (Sweden)

    A.M Ismatulloh

    2012-12-01

    Full Text Available The objective of this research is to describe the concept of Ibnu Jarir al-Tabari about al-Qur’an, tafsir and ta’wil. Ibn Jarir al-Tabari is an outstanding expert in the classic Islamic tradition. His knowledge in hadits, fiqh, lughah, history, and tafseer is unquestionable. This study uses an analytical descriptive design. The findings show that: Firstly, in defining al-Qur’an, al-Tabari focused on the al-Qur’an as an Arabic language text, not in other language. Secondly, al-Qur’an is written in sab’ah ahruf. It means that there are 7 different kinds of language with the same meaning. Thirdly, al-Qur’an comes from seven heaven’s door. Fourthly, there is no different word between tafseer and ta’wil. They have same meaning. These concepts are different to other concepts proposed by other ulama.

  16. Synthesis and structural transformations of hydrotalcite-like materials Mg-Al and Zn-Al

    NARCIS (Netherlands)

    Prihod'ko, R.V.; Sychev, M.V.; Astrelin, I.M.; Erdmann, K.; Mangel, A.; Santen, van R.A.

    2001-01-01

    Mg-Al and Zn-Al hydrotalcite-like layered double hydroxides of various compositions were synthesized and characterized. A detailed comparative analysis of the structure and composition of starting and reconstructed layered double hydroxides was made

  17. Tailoring ultrafine grained and dispersion-strengthened Ti2AlC/TiAl ...

    Indian Academy of Sciences (India)

    and Ti-Al pre-alloyed powders at low temperature of 1150◦C. The composite mainly consisted ... Metal–matrix composites; mechanical properties; microstructures; sintering. 1. Introduction γ-TiAl-based intermetallic alloys have been extensively.

  18. Electric quadrupole moments of neutron-rich nuclei {sup 32}Al and {sup 31}Al

    Energy Technology Data Exchange (ETDEWEB)

    Kameda, D., E-mail: kameda@ribf.riken.jp; Ueno, H. [RIKEN Nishina Center (Japan); Asahi, K.; Nagae, D.; Takemura, M.; Shimada, K. [Tokyo Institute of Technology, Department of Physics (Japan); Yoshimi, A.; Nagatomo, T.; Sugimoto, T. [RIKEN Nishina Center (Japan); Uchida, M.; Arai, T.; Takase, K.; Suda, S.; Inoue, T. [Tokyo Institute of Technology, Department of Physics (Japan); Murata, J.; Kawamura, H. [Rikkyo University, Department of Physics (Japan); Watanabe, H. [Australian National University, Department of Nuclear Physics (Australia); Kobayashi, Y.; Ishihara, M. [RIKEN Nishina Center (Japan)

    2007-11-15

    The electric quadrupole moments for the ground states of {sup 32}Al and {sup 31}Al have been measured by the {beta} ray-detected nuclear quadrupole resonance method. Spin-polarized {sup 32}Al and {sup 31}Al nuclei were obtained from the fragmentation of {sup 40}Ar projectiles at E/A = 95 MeV/nucleon, and were implanted in a single crystal {alpha}-Al{sub 2}O{sub 3} stopper. The measured Q moment of {sup 32}Al, |Q({sup 32}Al)| = 24(2) mb, is in good agreement with a conventional shell-model calculation with a full sd model space and empirical effective charges, while that of {sup 31}Al is considerably smaller than the sd calculations.

  19. The Y-Cu-Al system

    International Nuclear Information System (INIS)

    Krachan, T.; Stel'makhovych, B.; Kuz'ma, Yu.

    2003-01-01

    The phase diagram of the Y-Cu-Al system at 820 K has been constructed using X-ray powder diffraction. The existence of earlier known ternary aluminides has been confirmed and their homogeneity regions and atomic distributions in the structures have been determined: YCu 4.6-4.0 Al 7.4-8.0 (ThMn 12 -type R I =0.049), Y 2 Cu 12.0-10.5 Al 5.0-6.5 (Th 2 Zn 17 -type R I =0.092), YCu 1.0-1.1 Al 1.0-0.9 (Fe 2 P-type R I =0.068). It has been shown that the structure of Y(Cu,Al) 3 is characterized by an ordered distribution of the Cu and Al atoms and it should be referred as Ca 3 Cu 2 Al 7 structure type (R I =0.060) besides the PuNi 3 structure type with statistical occupancies of the smaller atoms. At the investigated temperature the compound YCu 1.0-0.25 Al 3.0-3.75 (BaAl 4 -type) was not observed. However, we found the ternary aluminide with composition Y 3 Cu 2.7-2.0 Al 8.3-9.0 and related La 3 Al 11 -type (space group Immm, a=0.4192-0.4228, b=1.2423-1.2557, c=0.9812-0.9895 nm, R I =0.069). The compounds YCu 6.8 Al 4.2 (space group Fddd, Tb(Cu 0.58 Al 0.42 ) 11 -type, a=1.42755, b=1.48587, c=0.65654 nm, R I =0.062) and YCu 6.5 Al 4.5 (space group I4 1 /amd, BaCd 11 -type, a=1.02774, c=0.65838 nm, R I =0.071) have been found and structurally refined for the first time

  20. Pemikiran Filosofis Sadra Dalam Tafsir Al-Qur’an Al-Karim : Surah Al-’A‘la

    Directory of Open Access Journals (Sweden)

    Kerwanto Kerwanto

    2014-12-01

    Full Text Available Abstrak : Dalam tafsir atas Surah al-’A‘lā, Mulla Sadra, melalui karyanya Tafsīr al Qur’ān al-Karīm, mengajak jiwa kita berpetualang menuju lapisan makna terdalam untuk mengenali realitas ketauhidan (al- mabdā’, kenabian (shirāth atau nubuwwah dan kebangkitan (ma‘ād dan mengulasnya secara filosofis. Penelitian ini merupakan suatu upaya untuk menggali manfaat dari aspek-aspek penting dari sumber-sumber keagamaan yang tergali dari petunjuk al Qur’an yang berpadu dengan prinsip- prinsip rasional filosofis dan pengalaman mistik (intuitif Sadra. Setiap bab pada tafsir ini diberikan judul dengan tasbīḥ (pernyataan pemujian dan pensucian, dengan tetap memaparkan beragam pokok persoalan terkait metafisika al-Qur’an. Prinsip-prinsip filosofis yang digunakan dalam risalah tafsir ini bisa menjadi salah satu bukti ketidakberjarakan antara filsafat dengan teks-teks keagamaan. Sadra menggunakan metode tafsir yang tetap menerima sisi lahiriah al-Qur’an, dan selanjutnya mencari misteri-misteri, rahasia-rahasia, dan dengan bantuan intelek (akal, intuisi dan iluminasi Tuhan untuk memperoleh realitas-realitas dan makna- makna dibalik selaput ekternalnya (aspek literalnyaKata kunci : Ḥikmah Muta’āliyah, irfan, al-mabdā’, kebangkitan setelah mati, nubuwwah, takwīl, gerak substansial (ḥarakah jawhariyyah, denotasi utama (al-maqshūd al-ashlī, penyempurnaan diri (takammul, tasbīḥ.  Abstract : In his commentary on Surah al-’ A‘lā, Mulla Sadra, through his Tafsīr al-Qur’ān al-Karīm invites our souls to ventureinto the deepest layers of meaning to recognize the reality of Divinity (al- mabdā’, prophethood (Ṣirāṭ or nubuwwah and resurrection (ma‘ād and discusses it in a more philosophical manner. This study is an attempt to explore the benefits of these important aspects of religious sources unearthed from Qur’anic injunctions combined with rational principles of philosophical and mystical experiences

  1. KRITIK ATAS KRITIK EPISTEMOLOGI TAFSIR M. ABIED AL JABIRI: Studi Kritis atas Madkhal ila al Quran al Karim

    Directory of Open Access Journals (Sweden)

    Ahmad Fawaid

    2015-12-01

    Full Text Available This paper critically views the epistemology of Muhammad Abid al Jabiri’s interpretation in his book, Madkhal ila al Quran al Karim. His latest work is projected to make the Quran relevant to mankind today and with certainly critiquing classical Quranic studies that have been constructed by previous scholars. Starting from Arab criticism, which is expected to synergize the gap between Turath and modernity, al Jabiri tried out his theory in the realm of Quranic studies oriented to maintain its originality and interpretation from sectarian influence. Focusing on al Jabiri’s review on the Quran, this paper examines and associates some of the problems with the epistemology of critique in Arab reasoning. Finally, it is inferred that the epistemologic offer of al Jabiri used in Turath is not fully applicable in Quranic studies for several reasons. First, the Quranic studies existed within the chain of sanad in its formation. Secondly, at the application stage, al Jabri often overlooked the sanad and narrations from the companions.

  2. Micromechanisms of fracture and fatigue in Ti3Al based and TiAl based intermetallics

    International Nuclear Information System (INIS)

    James, A.W.; Chave, R.A.; Hippsley, C.A.; Bowen, P.

    1993-01-01

    Micromechanisms of fracture and fatigue crack growth resistance in specific Ti 3 Al based and TiAl based intermetallics are reviewed. Effects of test temperature, environment and microstructure on crack growth resistance are considered in detail for several Ti 3 Al and Ti'Al based intermetallic systems under development. The implications of these studies for the structural reliability of these materials is also addressed briefly. (orig.)

  3. Density and atomic volume in liquid Al-Fe and Al-Ni binary alloys

    Energy Technology Data Exchange (ETDEWEB)

    Plevachuk, Yu. [Ivan Franko National Univ., Lviv (Ukraine). Dept. of Metal Physics; Egry, I.; Brillo, J.; Holland-Moritz, D. [Deutsches Zentrum fuer Luft- und Raumfahrt, Koeln (Germany). Inst. fuer Raumsimulation; Kaban, I. [Chemnitz Univ. of Technolgy (Germany). Inst. of Physics

    2007-02-15

    The density of liquid Al-Fe and Al-Ni binary alloys have been determined over a wide temperature range by a noncontact technique combining electromagnetic levitation and optical dilatometry. The temperature and composition dependences of the density are analysed. A negative excess volume correlates with the negative enthalpy of mixing, compound forming ability and chemical short-range ordering in liquid Al-Fe and Al-Ni alloys. (orig.)

  4. AL(0) in municipal waste incinerator ash

    Science.gov (United States)

    Stipp, S. L.; Ronsbo, J. G.; Zunic, T. B.; Christensen, T. H.

    2003-04-01

    Disposal of municipal waste is a challenge to society. Waste volume is substantially decreased by incineration but residual ash usually contains a number of toxic components which must be immobilised to insure environmental protection. One element, chromium, is mobile and toxic in its oxidised state as Cr(VI) but it can be reduced to Cr(III) and immobilised. Reduction can be promoted by ash treatment with Fe(0) or Fe(II), but recent evidence shows that at least some Cr(VI) is reduced spontaneously in the ash. Aspects of ash behaviour suggest metallic aluminium as the reducing agent, but no direct evidence of Al(0) has been found until now. We examined filter ash from an energy-producing, municipal-waste incinerator (Vest-forbrænding) near Copenhagen. X-ray diffraction (XRD) identified expected salts of Na, K and Ca such as halite, sylvite, calcite, anhydrite and gypsum as well as quartz, feldspar and some hematite. Wave-dispersive electron microprobe produced elemen-tal maps of the ash; Al-rich areas were analysed quantitatively by comparison with standards. We identified metallic Al particles, averaging 50 to 100 micrometers in di-ameter, often with a fractured, glassy border of aluminum oxide. The particles were porous, explaining fast Cr(VI) reduction and they contained thin exsolution lamellae of Al-alloys of Pb and Cu or Mn, Fe and Ag, which provide clues of the Al(0) origin in the waste. Sometimes Al(0) occurred inside glassy globes of Al2O3. Time-of-flight secondary ion mass spectroscopy (TOF-SIMS) and X-ray photoelectron spectroscopy (XPS) proved that surface Al concentrations on ash particles were below detection, confirming reactivity of the Al(0) bulk. The persistence of reduced Al through the highly oxidising combustion procedure comes as a surprise and is a benefit in the immobilisation of Cr(VI) from municipal-waste incineration residues.

  5. Evaluación de la tasa de consumo de oxígeno de Colossoma macropomum en relación al peso corporal y temperatura del agua

    Directory of Open Access Journals (Sweden)

    Dennis Tomalá

    2014-11-01

    Full Text Available Colossoma macropomum es una especie de la región amazónica perteneciente a la familia Characidae, la de mayor diversidad de peces de agua dulce. A nivel de laboratorio, se determinó la tasa de consumo de oxígeno (CO en metabolismo de rutina de C. macropomum a diferentes pesos corporales: 40, 60, 90, 140 y 250 g (expresados por unidad de masa corporal y temperatura del agua de 21, 26 y 31°C. El experimento se diseñó completamente al azar en arreglo factorial (5x3x3, utilizando un respirómetro de 20 L y una bomba de recirculación de agua. Las mediciones del CO fueron realizadas cada 5 min mediante el uso de un oxímetro digital. Los resultados indican que el CO mantiene relación directa con la temperatura del agua e inversa con el peso corporal de los organismos (P < 0,05. Las regresiones entre las variables independientes y el CO se ajustaron a ecuaciones potenciales: CO = 2844,9 P-0,734, CO = 2555,9 P-0,624 y CO = 1945,4 P-0,507 a 21, 26 y 31°C respectivamente; donde P se expresa en kg, obteniéndose altos coeficientes de correlación y determinación. La ecuación resultante del análisis multivariado de regresión lineal múltiple fue: CO = 4,839 - (0,708* P + (9,106* T. Los resultados ofrecen información para estimar la capacidad de un ambiente acuícola en base a la demanda de oxígeno de C. macropomum, aportando al desarrollo de una acuicultura con mayor sustento técnico.

  6. Equidad en el acceso al conocimiento a través de las TIC, la experiencia de la modalidad abierta y a distancia de la UTPL a través de la red de aulas virtuales

    Directory of Open Access Journals (Sweden)

    Verónica Condór Bermeo

    2004-06-01

    Full Text Available Durante el año 1999, se inicia el proceso de transformación de la modalidad abierta y a distancia de la UTPL, al incorporar las TIC en el proceso de enseñanza-aprendizaje, para lo cual se realiza una alianza estratégica con la empresa Globatel, proveedora para América del Sur de la plataforma tecnológica necesaria para la creación de Aulas Virtuales con capacidad interactiva a distancia, se procede a la instalación de la Red de Aulas Virtuales en un total de 20 centros universitarios de la UTPL, en 20 ciudades del Ecuador. A la alianza entre Globatel y la UTPL en enero de 2001, se incorpora la Red Global de Aprendizaje para el Desarrollo patrocinada por el Banco Mundial y presente en varios continentes, constituyéndose en la red de mayor cobertura dentro de un país de todos los pertenecientes a esta red y siendo la pionera en el esfuerzo para hacer llegar a los lugares alejados de las grandes ciudades las posibilidades de ofrecer educación de calidad. El desarrollo de las TIC nos hace pensar sobre el uso adecuado que se les debe dar a estas herramientas y, sobre todo, en el campo de la educación como elemento básico para lograr la equidad y calidad en el acceso al conocimiento. Sobre esta perspectiva se desarrolla el presente trabajo para lo cual analizamos la experiencia de la Red de Aulas Virtuales de la UTPL.

  7. HOMENAJE AL DOCTOR JORGE CAVELIER

    Directory of Open Access Journals (Sweden)

    Guillermo Rueda Montaña

    1979-06-01

    ósitos. Jamás concibió nada pequeño, ni en lo material, ni en lo espiritual. Su propio mundo de acción y movimiento, tallado a su imagen y semejanza, no le permitía detenerse en pequeñeces. Cabalgaba
    contra el tiempo, y este no le era suficiente para sus designios. Por eso no podía detenerse en minucias, jamás fue mediocre, ni toleró la mediocridad.

    JORGE CAVELIER pasa al Panteón de los grandes de Colombia, su excepcional condición humana así lo impone, sus valiosos servicios a la Patria así lo demandan, y el profundo rastro que deja de su paso por la vida, así lo decide.

    La CRUZ ROJA COLOMBIANA, que le debe casi todo, ya no será la misma. Será imposible ocupar el inmenso vacío que deja la desaparición del titán. Ocuparemos su sitio, mas no lo reemplazaremos.
    Como las criaturas del bosque milenario, permaneceremos silenciosos y cavilantes ante el majestuoso y doloroso espectáculo de su caída.

    Descanse en Paz.

  8. Magnetic tunnel junctions with AlN and AlNxOy barriers

    International Nuclear Information System (INIS)

    Schwickert, M. M.; Childress, J. R.; Fontana, R. E.; Kellock, A. J.; Rice, P. M.; Ho, M. K.; Thompson, T. J.; Gurney, B. A.

    2001-01-01

    Nonoxide tunnel barriers such as AlN are of interest for magnetic tunnel junctions to avoid the oxidation of the magnetic electrodes. We have investigated the fabrication and properties of thin AlN-based barriers for use in low resistance magnetic tunnel junctions. Electronic, magnetic and structural data of tunnel valves of the form Ta (100 Aa)/PtMn (300 Aa)/CoFe 20 (20 Aa - 25 Aa)/barrier/CoFe 20 (10 - 20 Aa)/NiFe 16 (35 - 40 Aa)/Ta (100 Aa) are presented, where the barrier consists of AlN, AlN x O y or AlN/AlO x with total thicknesses between 8 and 15 Aa. The tunnel junctions were sputter deposited and then lithographically patterned down to 2 x 2μm 2 devices. AlN was deposited by reactive sputtering from an Al target with 20% - 35% N 2 in the Ar sputter gas at room temperature, resulting in stoichiometric growth of AlN x (x=0.50±0.05), as determined by RBS. TEM analysis shows that the as-deposited AlN barrier is crystalline. For AlN barriers and AlN followed by natural O 2 oxidation, we obtain tunnel magnetoresistance >10% with specific junction resistance R j down to 60Ωμm 2 . [copyright] 2001 American Institute of Physics

  9. Dakwah Kultural Bayt al-Qur’an al-Akbar Ukiran Kayu Khas Melayu Palembang

    Directory of Open Access Journals (Sweden)

    Reza Pahlevi

    2016-07-01

    Full Text Available Penelitian ini berusaha mengungkap berbagai fenomena yang menggambarkan serangkaian kegiatan dakwah kultural Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang. Sehingga dapat diperoleh sejumlah informasi mengenai berbagai upaya penerapan program yang dimaksud. Penelitian ini dapat disimpulkan, pertama kontribusi Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang terhadap perkembangan metode dakwah kultural adalah dakwah melalui seni. Kedua, Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang sebagai tempat Wisata Religi yang sangat signifikan.   This research tries to reveal the various phenomenon that describe a series of cultural propaganda activities Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang. In order to obtain some informations about the efforts of the implementation of the program in question. It can be concluded, the first contribution of Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang on the development of methods of cultural propaganda is propaganda through art. Second Bayt al-Qur’an al-Akbar Ukiran Khas Melayu Palembang as a very significant Religious Tourism.

  10. SAP-like ultrafine-grained Al composites dispersion strengthened with nanometric AlN

    International Nuclear Information System (INIS)

    Balog, M.; Krizik, P.; Yan, M.; Simancik, F.; Schaffer, G.B.; Qian, M.

    2013-01-01

    This paper reports the development of novel Sinter-Aluminum-Pulver (SAP)-like Al–AlN nanocomposites via replacing the native Al 2 O 3 thin films on fine Al powder with a large volume fraction of in situ formed nanometric AlN dispersoids. Fine gas-atomized Al powder (d 50 =1.3 µm) compacts were first partially nitrided at 590 °C in flowing nitrogen, controlled by a small addition of Sn (0.3–0.4 wt%), and subsequently consolidated by hot direct extrusion. The resulting Al–AlN composites consisted of submicrometric Al grains reinforced with nanometric AlN dispersoids together with some nanometric Al 2 O 3 dispersoids. An Al–13 vol% AlN nanocomposite fabricated this way achieved exceptional ultimate tensile strength of 227 MPa, yield strength of 195 MPa and Young's modulus of 66 GPa at 300 °C, superior to typical SAP materials and coarse grained Al–AlN composites. In addition, the Al–13 vol% AlN nanocomposite exhibited good thermal stability up to 500 °C. The strengthening mechanism is discussed

  11. Computer aided cooling curve analysis for Al-5Si and Al-11Si alloys ...

    African Journals Online (AJOL)

    The effect of grain refiner, modifier, and combination of grain refiner cum modifier was studied on Al-5Si and Al-11Si alloys using computer aided cooling curve analysis. For combined grain refinement and modification effect, Al-Ti-B-Sr single master alloy was developed that acted as both grain refiner and modifier.

  12. Assessing behavioural changes in ALS: cross-validation of ALS-specific measures.

    Science.gov (United States)

    Pinto-Grau, Marta; Costello, Emmet; O'Connor, Sarah; Elamin, Marwa; Burke, Tom; Heverin, Mark; Pender, Niall; Hardiman, Orla

    2017-07-01

    The Beaumont Behavioural Inventory (BBI) is a behavioural proxy report for the assessment of behavioural changes in ALS. This tool has been validated against the FrSBe, a non-ALS-specific behavioural assessment, and further comparison of the BBI against a disease-specific tool was considered. This study cross-validates the BBI against the ALS-FTD-Q. Sixty ALS patients, 8% also meeting criteria for FTD, were recruited. All patients were evaluated using the BBI and the ALS-FTD-Q, completed by a carer. Correlational analysis was performed to assess construct validity. Precision, sensitivity, specificity, and overall accuracy of the BBI when compared to the ALS-FTD-Q, were obtained. The mean score of the whole sample on the BBI was 11.45 ± 13.06. ALS-FTD patients scored significantly higher than non-demented ALS patients (31.6 ± 14.64, 9.62 ± 11.38; p ALS-FTD-Q was observed (r = 0.807, p ALS-FTD-Q. Good construct validity has been further confirmed when the BBI is compared to an ALS-specific tool. Furthermore, the BBI is a more comprehensive behavioural assessment for ALS, as it measures the whole behavioural spectrum in this condition.

  13. Japanese version of the ALS-FTD-Questionnaire (ALS-FTD-Q-J).

    Science.gov (United States)

    Watanabe, Yasuhiro; Beeldman, Emma; Raaphorst, Joost; Izumi, Yuishin; Yoshino, Hiide; Masuda, Michihito; Atsuta, Naoki; Ito, Satoru; Adachi, Tadashi; Adachi, Yoshiki; Yokota, Osamu; Oda, Masaya; Hanashima, Ritsuko; Ogino, Mieko; Ichikawa, Hiroo; Hasegawa, Kazuko; Kimura, Hideki; Shimizu, Toshio; Aiba, Ikuko; Yabe, Hayato; Kanba, Makoto; Kusumi, Kimiyoshi; Aoki, Tetsuya; Hiroe, Yu; Watanabe, Hirohisa; Nishiyama, Kazutoshi; Nomoto, Masahiro; Sobue, Gen; Nakashima, Kenji

    2016-08-15

    Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) share common clinical, genetic and neuropathological features. Some ALS patients have behavioral/personality changes, which could result in significant obstacles in the care provided by family members and caregivers. An easy screening tool would contribute greatly to the evaluation of these symptoms. We translated the ALS-FTD-Questionnaire, developed in the Netherlands, into Japanese (ALS-FTD-Q-J) and examined the clinimetric properties (internal consistency, construct and clinical validity). Patients with ALS and/or behavioral variant FTD (bvFTD) were evaluated alongside healthy controls in this multicenter study. All ALS patients, regardless of bvFTD status, were further evaluated by the frontal behavioral inventory (FBI) and for frontal/executive function, cognition, anxiety/depression, and motor functions. Data from 146 subjects were analyzed: ALS (92), ALS-bvFTD (6), bvFTD (16), and healthy controls (32). The internal consistency of the ALS-FTD-Q-J was good (Cronbach α=0.92). The ALS-FTD-Q-J showed construct validity as it exhibited a high correlation with the FBI (r=0.79). However, correlations were moderate with anxiety/depression and low with cognitive scales, in contrast to the original report, i.e. a moderate correlation with cognition and a low correlation with anxiety/depression. The ALS-FTD-Q-J discriminated ALS patients from (ALS-)bvFTD patients and controls. Thus, the ALS-FTD-Q-J is useful for evaluating Japanese ALS/FTD patients. Copyright © 2016 Elsevier B.V. All rights reserved.

  14. Does Al Qaeda Central Still Matter?

    Directory of Open Access Journals (Sweden)

    Kangil Lee

    2015-01-01

    Full Text Available El artículo discute si Al Qaeda central es todavía relevante o no. Tras estudiar la actividades de Al Qaeda central cuyo objetivo es provocar la violencia en Afganistán y Pakistán, así como los planes continuos de ataques directos contra los Estados Unidos, el artículo muestra que la capacidad operativa de Al Qaeda es más sólida y fuerte que la que Estados Unidos y otros investigadores y eruditos han anticipado. Además, el apoyo virulento y la contribución Al Qaeda en la Península Arábiga a la red de Al Qaeda muestra que la longevidad de Al Qaeda depende de la relación con sus afiliados. El artículo concluye que, en estas condiciones, Al Qaeda central todavía ocupa un lugar en las discusiones de seguridad global.

  15. Al cation induces aggregation of serum proteins.

    Science.gov (United States)

    Chanphai, P; Kreplak, L; Tajmir-Riahi, H A

    2017-07-15

    Al cation is known to induce protein fibrillation and causes several neurodegenerative disorders. We report the spectroscopic, thermodynamic analysis and AFM imaging for the Al cation binding process with human serum albumin (HSA), bovine serum albumin (BSA) and milk beta-lactoglobulin (b-LG) in aqueous solution at physiological pH. Hydrophobicity played a major role in Al-protein interactions with more hydrophobic b-LG forming stronger Al-protein complexes. Thermodynamic parameters ΔS, ΔH and ΔG showed Al-protein bindings occur via hydrophobic and H-bonding contacts for b-LG, while van der Waals and H-bonding interactions prevail in HSA and BSA adducts. AFM clearly indicated that aluminum cations are able to force BSA and b-LG into larger or more robust aggregates than HSA, with HSA 4±0.2 (SE, n=801) proteins per aggregate, for BSA 17±2 (SE, n=148), and for b-LG 12±3 (SE, n=151). Thioflavin T test showed no major protein fibrillation in the presence of Al cation. Al complexation induced major alterations of protein conformations with the order of perturbations b-LG>BSA>HSA. Copyright © 2017 Elsevier B.V. All rights reserved.

  16. Strength of Al and Al-Mg/alumina bonds prepared using ultrahigh vacuum diffusion bonding

    International Nuclear Information System (INIS)

    King, W.E.; Campbell, G.H.; Wien, W.L.; Stoner, S.L.

    1994-01-01

    The authors have measured the cross-breaking strength of Al and Al-Mg alloys bonded with alumina. Diffusion bonding of Al and Al-Mg alloys requires significantly more bonding time than previously thought to obtain complete bonding. In contrast to previous diffusion bonding studies, fracture morphologies are similar to those obtained in bonds formed by liquid phase reaction; i.e., bonds are as strong or stronger than the ceramic; and fracture tends to propagate in the metal for pure Al and near the interface in the ceramic for the alloys. There are indications that the fracture morphology depends on Mg content and therefore on plasticity in the metal

  17. [Lessons from Guam ALS/PDC study].

    Science.gov (United States)

    Asao, Hirano

    2007-11-01

    An extraordinarily high incidence of amyotrophic lateral sclerosis (ALS) and parkinsonism-dementia complex (PDC) affecting the native population was discovered on the island of Guam a half century ago. Guam ALS is identical to classic ALS clinically and pathologically while PDC is marked by progressive parkinsonism and dementia. The unusual histological finding in these fetal neurodegenerative diseases is the presence of numerous neurofibrillary tangles in a selective topographic distribution unassociated with senile plaques. There have been remarkable advances in field of age-associated neurodegenerative disease after our initial study of Guam cases. Four noteworthy topics are presented in this communication. 1) Clinically, the coexistence of parkinsonism and dementia was frequently recognized in Parkinson disease and Alzheimer disease. Some other new disease entities characterized by coexistence of parkinsonism and dementia have been reported. These include progressive supranuclear palsy, frontotemporal dementia and parkinsonism linked to chromosome 17. 2) Neuropathologically, abundant neurofibrillary tangles unassociated with senile plaques were demonstrated in many diseases such as aftermath of boxing and tangle-only dementia. Furthermore, tau-positive structures were recognized not only in neurons but in glial cells in certain diseases. Tauopathy is one of the current hot research subjects. 3) Familial aggregation of Guam ALS patients provoked investigation of familial ALS elsewhere. Familial motor neuron disease with SOD1 mutation is the target of worldwide intense investigation at the present time. SOD1 gene mutation is, however, not found in Guam ALS. 4) The most striking findings of the Guam study is the gradual decline in the incidence of ALS on Guam during a quarter century and virtual disappearance of new patients. This may be linked to a remarkable change in environment and life style of the Chamorro population. The etiology of ALS is still unknown and

  18. Al-Âyah al-Mutasyâbihât al-Lafzhiyyah fi Sûrah al-An’âm ‘Inda al-Kirmâny

    Directory of Open Access Journals (Sweden)

    Hikmatiar Pasya

    2017-07-01

    Full Text Available This paper discusses about the verses of mutasyâbihât in the Quran. The debate of this verses caused various opinions. The meaning of the mutasyâbihât in this paper is the similarity and difference of the words in the Qur'an. Mufasir have different opinion about the meaning of the verse of mutasyâbihât al-lafdzi. In addition, many Hufadz of the Quran who are confused from one verse to another, or one chapter to another. It’s because similarity of verses in the Qur'an with other verses. So the writer wants to explain the verses mutasyâbihât al-lafdzi in the perspective of Hamzh al-Karmani in Surah al-An'âm. In this discussion the author discovers some passages in mutasyâbihât al-lafdzi, namely Asrâru al-balaghah fi mutasyabih al-lafdzi, Asrar al-balaghah fi mutasyabih al-hurf, and murâ'ah al-ikhtilâfmurâd bi al-lafdzi al-mukarrar.

  19. Tracing Al Shabaab’s Decision to Cooperate with Al Qaeda in Somalia (2008

    Directory of Open Access Journals (Sweden)

    Adlini Ilma Ghaisany Sjah

    2014-02-01

    Full Text Available 'Al Shabaab, a Somali insurgent with predominantly nationalistic causes (alongside transnational [global Jihad] and Islamic goals made the choice to fight on behalf of Al Qaeda in 2008. The decision to do so contrasted with Al Shabaab’s previous behaviour of actively denying cooperation and distancing itself from Al Qaeda. This study aims to uncover factors that contributed to Al Shabaab’s decision through the use of process-tracing. The results show that Al Shabaab’s declaration of cooperation with Al Qaeda in August 2008 was brought about by a series of events that traced back to four factors: public reactions to the implementation of a Salafi ideology, the shift to a radical leadership, Al Shabaab’s inability to maintain stability in areas under its control and its increasing attacks by Al Shabaab on the Somali public. Al Shabaab pursued cooperation with Al Qaeda after realizing that their nationalistic preference was no longer achievable in the near future.' ' '

  20. Optical, structural, and nuclear scientific studies of AlGaN with high Al composition

    Science.gov (United States)

    Lin, Tse Yang; Chung, Yee Ling; Li, Lin; Yao, Shude; Lee, Y. C.; Feng, Zhe Chuan; Ferguson, Ian T.; Lu, Weijie

    2010-08-01

    AlGaN epilayers with higher Al-compositions were grown by Metalorganic Chemical Vapor Deposition (MOCVD) on (0001) sapphire. Trimethylgallium (TMGa), trimethylaluminium (TMAl) and NH3 were used as the source precursors for Ga, Al, and N, respectively. A 25 nm AlN nucleation layer was first grown at low-temperature of 590 °C at 300 Torr. Followed, AlxGa1-xN layers were grown at 1080 °C on low-temperature AlN nucleation layers. The heterostructures were characterized by a series of techniques, including x-ray diffraction (XRD), Rutherford backscattering (RBS), photoluminescence (PL), scanning electron microscopy (SEM) and Raman scattering. Precise Al compositions were determined through XRD, RBS, and SEM combined measurements. Room Temperature Raman Scattering spectra shows three major bands from AlGaN alloys, which are AlN-like, A1 longitudinal optical (LO) phonon modes, and E2 transverse optical (TO) band, respectively, plus several peak comes from the substrate. Raman spectral line shape analysis lead to an optical determination of the electrical property free carrier concentration of AlGaN. The optical properties of AlGaN with high Al composition were presented here.

  1. Formation of epitaxial Al 2O 3/NiAl(1 1 0) films: aluminium deposition

    Science.gov (United States)

    Lykhach, Y.; Moroz, V.; Yoshitake, M.

    2005-02-01

    Structure of epitaxial Al 2O 3 layers formed on NiAl(1 1 0) substrates has been studied by means of reflection high-energy electron diffraction (RHEED). The elucidated structure was compared to the model suggested for 0.5 nm-thick Al 2O 3 layers [K. Müller, H. Lindner, D.M. Zehner, G. Ownby, Verh. Dtsch. Phys. Ges. 25 (1990) 1130; R.M. Jaeger, H. Kuhlenbeck, H.J. Freund, Surf. Sci. 259 (1991) 235]. The stepwise growth of Al 2O 3 film, involving deposition and subsequent oxidation of aluminium onto epitaxial 0.5 nm-thick Al 2O 3 layers, has been investigated. Aluminium was deposited at room temperature, whereas its oxidation took place during annealing at 1070 K. The Al 2O 3 thickness was monitored by means of Auger electron spectroscopy (AES). It was found that Al 2O 3 layer follows the structure of 0.5 nm thick Al 2O 3 film, although a tilting of Al 2O 3(1 1 1) surface plane with respect to NiAl(1 1 0) surface appeared after Al deposition.

  2. Structural and electrical characterization of AuPtAlTi ohmic contacts to AlGaN/GaN with varying annealing temperature and Al content

    OpenAIRE

    Fay, Mike W.; Han, Y.; Brown, Paul D.; Harrison, Ian; Hilton, K.P.; Munday, A.; Wallis, D.; Balmer, R.S.; Uren, M.J.; Martin, T.

    2008-01-01

    The effect of varying annealing temperature and Al layer thickness on the structural and electrical characteristics of AuPtAlTi/AlGaN/GaN ohmic contact structures has been systematically investigated. The relationship between annealing temperature, Al content, interfacial microstructure, surface planarity and contact resistance is\\ud examined. In particular, the presence of a detrimental low temperature Pt-Al reaction is identified. This is implicated in both the requirement for a higher Al:T...

  3. Some aspects of anelastic and microplastic creep of pure Al and two Al-alloys

    International Nuclear Information System (INIS)

    Sgobba, S.; Kuenzi, H.U.; Ilschner, B.

    1993-01-01

    Anelastic creep of pure Al, commercial Al-Cu and a binary Al-Cu alloy has been measured at room temperature by means of a high resolution laser interferometer. The irreversible component of the deformation was also quantified from measurements of the anelastic creep recovery. The dependence of the deformation-time curves on thermal treatment and cold work is analyzed. The mechanisms responsible for the room temperature anelastic creep are discussed. Materials loaded below their elastic limit can present either a pure anelastic behavior (commercial Al-Cu) or additional viscoelastic creep (pure Al, high purity Al-Cu). For commercial Al-Cu, the presence of an irreversible deformation appears to be mainly related to the state of the surface. A viscoelastic after effect has been measured for this alloy after a Cu-electroplating treatment. As a typical result for room temperature creep, the irreversible deformation depends logarithmically on load time. (orig.)

  4. Some aspects of anelastic and microplastic creep of pure Al and two Al-alloys

    Energy Technology Data Exchange (ETDEWEB)

    Sgobba, S. (Lab. de Metallurgie Mecanique, Dept. des Materiaux, Ecole Polytechnique Federale de Lausanne (Switzerland)); Kuenzi, H.U. (Lab. de Metallurgie Mecanique, Dept. des Materiaux, Ecole Polytechnique Federale de Lausanne (Switzerland)); Ilschner, B. (Lab. de Metallurgie Mecanique, Dept. des Materiaux, Ecole Polytechnique Federale de Lausanne (Switzerland))

    1993-11-01

    Anelastic creep of pure Al, commercial Al-Cu and a binary Al-Cu alloy has been measured at room temperature by means of a high resolution laser interferometer. The irreversible component of the deformation was also quantified from measurements of the anelastic creep recovery. The dependence of the deformation-time curves on thermal treatment and cold work is analyzed. The mechanisms responsible for the room temperature anelastic creep are discussed. Materials loaded below their elastic limit can present either a pure anelastic behavior (commercial Al-Cu) or additional viscoelastic creep (pure Al, high purity Al-Cu). For commercial Al-Cu, the presence of an irreversible deformation appears to be mainly related to the state of the surface. A viscoelastic after effect has been measured for this alloy after a Cu-electroplating treatment. As a typical result for room temperature creep, the irreversible deformation depends logarithmically on load time. (orig.).

  5. Analisis Kecenderungan Manhaj Akidah Shaykh Shams al-Din al-Sumatera’i

    Directory of Open Access Journals (Sweden)

    MOHD HAIDHAR KAMARZAMAN

    2016-12-01

    Full Text Available Shaykh Shams al-Din al-Sumatera'i is a very great and respected scholar during 16th and 17th century of Acheh. His knowledge in various fields recognized by local and international scholars. He had been a Qadi Malik al-’Adil, a religious leader, who became a referred by communities and country during the reign of the three Sultans of Aceh. He has authored nearly 40 pieces of books related to the theology and sufism. This study focuses on the methods used by Shaykh Shams al-Din al-Sumatera'i in his theological writings. This study found that Shaykh Shams al-Din al-Sumatera'i had used six methods in the such writings.

  6. ALS-Plus Syndrome: Non-Pyramidal Features in a Large ALS Cohort

    Science.gov (United States)

    McCluskey, Leo; Vandriel, Shannon; Elman, Lauren; Van Deerlin, Vivianna M.; Powers, John; Boller, Ashley; Wood, Elisabeth McCarty; Woo, John; McMillan, Corey T.; Rascovsky, Katya; Grossman, Murray

    2014-01-01

    Objective Autopsy studies show widespread pathology in amyotrophic lateral sclerosis (ALS), but clinical surveys of multisystem disease in ALS are rare. We investigated ALS-Plus syndrome, an understudied group of patients with clinical features extending beyond pyramidal and neuromuscular systems with or without cognitive/behavioral deficits. Methods In a large, consecutively-ascertained cohort of 550 patients with ALS, we documented atypical clinical manifestations. Genetic screening for C9orf72 hexanucleotide expansions was performed in 343 patients, and SOD1, TARDBP, and VCP were tested in the subgroup of patients with a family history of ALS. Gray matter and white matter imaging was available in a subgroup of 30 patients. Results Seventy-five (13.6%) patients were identified with ALS-Plus syndrome. We found disorders of ocular motility, cerebellar, extrapyramidal and autonomic functioning. Relative to those without ALS-Plus, cognitive impairment (8.0% vs 2.9%, p=0.029), bulbar-onset (49.3% vs 23.2%, pALS-Plus. Survival was significantly shorter in ALS-Plus (29.66 months vs 42.50 months, p=0.02), regardless of bulbar-onset or mutation status. Imaging revealed significantly greater cerebellar and cerebral disease in ALS-Plus compared to those without ALS-Plus. Conclusions ALS-Plus syndrome is not uncommon, and the presence of these atypical features is consistent with neuropathological observations that ALS is a multisystem disorder. ALS-Plus syndrome is associated with increased risk for poor survival and the presence of a pathogenic mutation. PMID:25086858

  7. High Temperature AL-Nanocrystal Alloy Synthesis

    National Research Council Canada - National Science Library

    Perepezko, J

    2001-01-01

    Aluminum-rich metallic glasses containing transition metals and rare earth elements have been found to yield finely mixed microstructures of Al nanocrystals embedded in an amorphous matrix and exhibit...

  8. Landbouwprotectie als middel tot politieke integratie.

    NARCIS (Netherlands)

    Noort, van den P.C.

    1988-01-01

    In acht hoofdstukken is dit beleid uiteengezet. 1. Landbouwprotectie als middel tot politieke integratie. 2. Eigenbelang van een meer marktgericht landbouwbeleid. 3. uitdagingen voor landbouwcooperaties. 4. Het westers landbouwbeleid en het wereldvoedselprobleem. 5. Landbouw heeft nu een eigen

  9. (14) Akinwole et al Influence of Culture

    African Journals Online (AJOL)

    Adeyinka Odunsi

    Influence of Culture Water Draw-off on Growth of the African ... 1Department of Aquaculture and Fisheries Management, University of ... areas (Eyo et al., 2003). .... systems. Nigerian Journal of Rural. Extension and Development. 6: 38-. 42.

  10. Al Qaeda: Statements and Evolving Ideology

    National Research Council Canada - National Science Library

    Blanchard, Christopher M

    2004-01-01

    ... [April and October 2004] have led some terrorism analysts to speculate that the messages may signal a new attempt by him to create a lasting political leadership role for himself and Al Qaeda as the vanguard...

  11. Grain boundaries in Ni3Al. 2

    International Nuclear Information System (INIS)

    Kung, H.; Sass, S.L.

    1992-01-01

    This paper discusses the dislocation structure of small angle tilt and twist boundaries in ordered Ni 3 Al, with and without boron, investigated using transmission electron microscopy. Dislocation with Burgers vectors that correspond to anti-phase boundary (APB)-coupled superpartials were found in small angle twist boundaries in both boron-free and boron-doped Ni 3 Al, and a small angle tilt boundary in boron-doped Ni 3 Al. The boundary structures are in agreement with theoretical models proposed by Marcinkowski and co-workers. The APB energy determined from the dissociation of the grain boundary dislocations was lower than values reported for isolated APBs in Ni 3 Al. For small angle twist boundaries the presence of boron reduced the APB energy at the interface until it approached zero. This is consistent with the structure of these boundaries containing small regions of increased compositional disorder in the first atomic plane next to the interface

  12. 12th Annual ALS Users' Association Meeting

    International Nuclear Information System (INIS)

    Robinson, Arthur L.

    1999-01-01

    Science took the front seat as 219 Advanced Light Source (ALS) users and staff gathered on Monday and Tuesday, October 18 and 19 for the twelfth annual users' meeting. The bulk of the meeting was dedicated to reports on science at the ALS. Packed into two busy days were 31 invited oral presentations and 80 submitted poster presentations, as well as time to visit 24 vendor booths. The oral sessions were dedicated to environmental science, chemical dynamics, biosciences, magnetic materials, and atomic and molecular science. In addition, there was an ALS highlights session that emphasized new results and a session comprising highlights from the young scientists who will carry the ALS into the future

  13. AL Amyloidosis Complicated by Persistent Oral Bleeding

    Directory of Open Access Journals (Sweden)

    Luiz Antonio Liarte Marconcini

    2015-01-01

    Full Text Available A case of amyloid light chain (AL amyloidosis is presented here with uncontrolled bleeding after a nonsurgical dental procedure, most likely multifactorial in nature, and consequently treated with a multidisciplinary approach.

  14. Arfiputri et al., Afr., J. Infect. Dis.

    African Journals Online (AJOL)

    Dharin Serebrina Arfiputri

    2017-10-20

    Oct 20, 2017 ... Diagnosis of VVC are from history taking, physical examination (Linhares et al, 2001; ... From the appearance of vaginal discharge usually minimal, ... (69.48%), and the rest are not yet married, divorce and widow, not yet.

  15. Ayinmode et al., Afr., J. Infect. Dis.

    African Journals Online (AJOL)

    Ayinmode, Adekunle

    Brucella abortus antibodies using Rose Bengal test and Competitive Enzyme Linked ... milk production in both dairy and beef cattle (Hernandez et al., 2001; Dubey and Schares, 2011). ..... Institut National de la Recherche Agronomique. Paris ...

  16. PEMBARUAN MASLAḤAH DALAM MAQĀṢID AL- SHARĪ‘AH: TELAAH HUMANISTIS TENTANG AL-KULLIYYĀT AL-KHAMSAH

    Directory of Open Access Journals (Sweden)

    Zaenuddin Mansyur

    2012-06-01

    Full Text Available Abstract:   In order to answer a variety of issues faced by human being in the current era, such as human rights abuses, social disintegration, and terrorism, the renewal of Islamic law in the level of theoretical and practical aspects is very urgent. This paper aims to examine one of the Islamic legal reform efforts, namely to build a more technical understanding of the concept of maṣlaḥah contained in the maqāṣīd sharī‘ah, called the al-kulliyat al-khamsah. Therefore, the concept of maṣlaḥah in ḥifẓ al-dīn is technically defined as al-ḥurriyah al-i‘tiqād (freedom of religion and schools; in ḥifẓ al-nafs as al-karamat al-insān (human being breeding; in ḥifẓ al-nasl as ḥifẓ al-usrah (wholeness and harmony of the family; in ḥifẓ al-māl as al-taḍammun al-insān (social solidarity , and in ḥifẓ al-‘aql as al-ḥuqūq as al-tarbiyāt (increasing human resources quality.Abstrak: Demi menjawab aneka persoalan zaman yang dihadapi manusia era sekarang, seperti penyelewengan terhadap HAM, disintegrasi sosial, dan terorisme, maka pembaharuan hukum Islam dalam tataran teoretis dan praktis urgen dilakukan. Tulisan ini bertujuan untuk mengkaji salah satu upaya pembaruan hukum Islam, yaitu membangun pemahaman yang lebih teknis terhadap konsep maṣlaḥah yang terkandung dalam maqāṣīd sharī‘ah, yang disebut dengan al-kulliyāt al-khamsah. Oleh karena itu, konsep maṣlaḥah dalam ḥifẓu al-dīn secara teknis dimaknai sebagai ḥurriyah al-i‘tiqād (kebebasan untuk beragama dan beraliran; dalam ḥifẓu al-nafs sebagai al-karāmāt al-insān (pemuliaan kemanusiaan; dalam ḥifẓu al-nasl sebagai ḥifẓu al-usrah (keutuhan dan keharmonisan keluarga; dalam ḥifẓu al-māl sebagai al-taḍammun al-insān (solidaritas sosial; dan dalam ḥifẓu al-‘aql sebagai al-ḥuqūq al-tarbiyāt (peningkatan sumber daya manusia.

  17. In Situ Fabrication of AlN Coating by Reactive Plasma Spraying of Al/AlN Powder

    Directory of Open Access Journals (Sweden)

    Mohammed Shahien

    2011-10-01

    Full Text Available Reactive plasma spraying is a promising technology for the in situ formation of aluminum nitride (AlN coatings. Recently, it became possible to fabricate cubic-AlN-(c-AlN based coatings through reactive plasma spraying of Al powder in an ambient atmosphere. However, it was difficult to fabricate a coating with high AlN content and suitable thickness due to the coalescence of the Al particles. In this study, the influence of using AlN additive (h-AlN to increase the AlN content of the coating and improve the reaction process was investigated. The simple mixing of Al and AlN powders was not suitable for fabricating AlN coatings through reactive plasma spraying. However, it was possible to prepare a homogenously mixed, agglomerated and dispersed Al/AlN mixture (which enabled in-flight interaction between the powder and the surrounding plasma by wet-mixing in a planetary mill. Increasing the AlN content in the mixture prevented coalescence and increased the nitride content gradually. Using 30 to 40 wt% AlN was sufficient to fabricate a thick (more than 200 µm AlN coating with high hardness (approximately 1000 Hv. The AlN additive prevented the coalescence of Al metal and enhanced post-deposition nitriding through N2 plasma irradiation by allowing the nitriding species in the plasma to impinge on a larger Al surface area. Using AlN as a feedstock additive was found to be a suitable method for fabricating AlN coatings by reactive plasma spraying. Moreover, the fabricated coatings consist of hexagonal (h-AlN, c-AlN (rock-salt and zinc-blend phases and certain oxides: aluminum oxynitride (Al5O6N, cubic sphalerite Al23O27N5 (ALON and Al2O3. The zinc-blend c-AlN and ALON phases were attributed to the transformation of the h-AlN feedstock during the reactive plasma spraying. Thus, the zinc-blend c-Al

  18. Performance of the ALS injection system

    International Nuclear Information System (INIS)

    Kim, C.H.

    1993-05-01

    The authors started commissioning the Advanced Light Source (ALS) storage ring on January 11, 1993. The stored beam reached 60 mA on March 24, 1993 and 407 mA on April 9, 1993. The fast pace of storage ring commissioning can be attributed partially to the robust injection system. In this paper they describe the operating characteristics of the ALS injection system

  19. The evolving genetic risk for sporadic ALS.

    Science.gov (United States)

    Gibson, Summer B; Downie, Jonathan M; Tsetsou, Spyridoula; Feusier, Julie E; Figueroa, Karla P; Bromberg, Mark B; Jorde, Lynn B; Pulst, Stefan M

    2017-07-18

    To estimate the genetic risk conferred by known amyotrophic lateral sclerosis (ALS)-associated genes to the pathogenesis of sporadic ALS (SALS) using variant allele frequencies combined with predicted variant pathogenicity. Whole exome sequencing and repeat expansion PCR of C9orf72 and ATXN2 were performed on 87 patients of European ancestry with SALS seen at the University of Utah. DNA variants that change the protein coding sequence of 31 ALS-associated genes were annotated to determine which were rare and deleterious as predicted by MetaSVM. The percentage of patients with SALS with a rare and deleterious variant or repeat expansion in an ALS-associated gene was calculated. An odds ratio analysis was performed comparing the burden of ALS-associated genes in patients with SALS vs 324 normal controls. Nineteen rare nonsynonymous variants in an ALS-associated gene, 2 of which were found in 2 different individuals, were identified in 21 patients with SALS. Further, 5 deleterious C9orf72 and 2 ATXN2 repeat expansions were identified. A total of 17.2% of patients with SALS had a rare and deleterious variant or repeat expansion in an ALS-associated gene. The genetic burden of ALS-associated genes in patients with SALS as predicted by MetaSVM was significantly higher than in normal controls. Previous analyses have identified SALS-predisposing variants only in terms of their rarity in normal control populations. By incorporating variant pathogenicity as well as variant frequency, we demonstrated that the genetic risk contributed by these genes for SALS is substantially lower than previous estimates. © 2017 American Academy of Neurology.

  20. Thermoluminescence properties of AlN ceramics

    DEFF Research Database (Denmark)

    Trinkler, L.; Christensen, P.; Agersnap Larsen, N.

    1998-01-01

    The paper describes thermoluminescence (TL) properties of AlN:Y2O3 ceramics irradiated with ionising radiation. A high TL sensitivity of AlN:Y2O3 ceramics to radiation encouraged a study of the AlN ceramics for application as a dosimetric material. The paper presents experimental data on: glow...... curve, emission spectrum, dose response, energy dependence, influence of heating rate and fading rate. The measured TL characteristics were compared with those of well-known, widely used TLDs, i.e. LiF:Mg,Ti, LiF:Mg,Cu,P and Al2O3:C. It is concluded that AlN:Y2O3 ceramics showing a radiation sensitivity...... which is approximately 50 times greater than that of LiF:Mg,Ti is an interesting dosimetry material; however due to a high fading rate of the TL of AlN:Y2O3 on storage at room temperature, a further development of the material for improving the fading characteristics is needed for its application...

  1. Clinical trials for neuroprotection in ALS.

    Science.gov (United States)

    Siciliano, G; Carlesi, C; Pasquali, L; Piazza, S; Pietracupa, S; Fornai, F; Ruggieri, S; Murri, L

    2010-07-01

    Owing to uncertainty on the pathogenic mechanisms underlying motor neuron degeneration in amyotrophic lateral sclerosis (ALS) riluzole remains the only available therapy, with only marginal effects on disease survival. Here we review some of the recent advances in the search for disease-modifying drugs for ALS based on their putative neuroprotective effetcs. A number of more or less established agents have recently been investigated also in ALS for their potential role in neuroprotection and relying on antiglutamatergic, antioxidant or antiapoptotic strategies. Among them Talampanel, beta-lactam antibiotics, Coenzyme Q10, and minocycline have been investigated. Progress has also been made in exploiting growth factors for the treatment of ALS, partly due to advances in developing effective delivery systems to the central nervous system. A number of new therapies have also been identified, including a novel class of compounds, such as heat-shock protein co-inducers, which upregulate cell stress responses, and agents promoting autophagy and mitochondriogenesis, such as lithium and rapamycin. More recently, alterations of mRNA processing were described as a pathogenic mechanism in genetically defined forms of ALS, as those related to TDP-43 and FUS-TLS gene mutations. This knowledge is expected to improve our understanding of the pathogenetic mechanism in ALS and developing more effective therapies.

  2. The fecal microbiome of ALS patients.

    Science.gov (United States)

    Brenner, David; Hiergeist, Andreas; Adis, Carolin; Mayer, Benjamin; Gessner, André; Ludolph, Albert C; Weishaupt, Jochen H

    2018-01-01

    Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative motor neuron disease accompanied by both systemic and central nervous system-specific inflammation as well as deregulated energy metabolism. These potential pathogenetic factors have recently been found to mutually interact with the gut microbiota, raising the hypothesis of a link between microbiome alterations and ALS pathogenesis. The aim of our study was to assess whether ALS is associated with an altered composition of the fecal microbiota. We compared the fecal microbiota of 25 ALS patients with 32 age- and gender-matched healthy persons using 16S rRNA gene sequencing analysis. Confounding factors and secondary disease effects on the microbiome were minimized by selection of patients without dysphagia, gastrostomy, noninvasive ventilation, or reduced body mass index. Comparing the 2 carefully matched groups, the diversity and the abundance of the bacterial taxa on the different taxonomic levels as well as PICRUSt-predicted metagenomes were almost indistinguishable. Significant differences between ALS patients and healthy controls were only observed with regard to the overall number of microbial species (operational taxonomic units) and in the abundance of uncultured Ruminococcaceae. Conclusively, ALS patients do not exhibit a substantial alteration of the gut microbiota composition. Copyright © 2017 Elsevier Inc. All rights reserved.

  3. Heterogeneous nucleation of solid Al from the melt by Al 3 Ti : Molecular dynamics simulations

    KAUST Repository

    Wang, Junsheng; Horsfield, Andrew; Lee, Peter D.; Brommer, Peter

    2010-01-01

    It has been known experimentally for some time that Al3 Ti is a powerful nucleant for the solidification of aluminum from the melt; however, a full microscopic understanding is still lacking. To develop this understanding, we have performed molecular dynamics simulations of the nucleation and early stages of growth using published embedded atom method potentials for Al-Ti, but modified by us to stabilize the D 022 structure. We discover that Al3 Ti can indeed be very effective in promoting the growth of solid Al but the manner in which growth takes place depends sensitively on the surface on which the Al nucleates. In particular, complete growth of solid Al from the liquid on the (001) and (110) surfaces of Al3 Ti occurs at a lower temperature than on the (112) surface. This anisotropy agrees with observations in previous experiments. We explain this observation in terms of interfacial energies. On the preferential (111) surface of Al the solid-liquid interfacial energy is highest while the solid-vacuum energy is lowest. Our simulations also show that the extent of ordering taking place in liquid Al close to the Al 3 Ti substrate above the melting point correlates well with the effectiveness of the substrate as a nucleant below the melting temperature: this could provide a computationally efficient scheme to identify good nucleants. © 2010 The American Physical Society.

  4. Compressive performance and crack propagation in Al alloy/Ti{sub 2}AlC composites

    Energy Technology Data Exchange (ETDEWEB)

    Hanaor, D.A.H., E-mail: dorian.hanaor@sydney.edu.au [School of Civil Engineering, University of Sydney, Sydney, NSW 2006 (Australia); Hu, L. [Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011 (United States); Kan, W.H.; Proust, G. [School of Civil Engineering, University of Sydney, Sydney, NSW 2006 (Australia); Foley, M. [Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW 2006 (Australia); Karaman, I.; Radovic, M. [Department of Materials Science and Engineering, Texas A& M University, College Station, TX 77843 (United States)

    2016-08-30

    Composite materials comprising a porous Ti{sub 2}AlC matrix and Al 6061 alloy were fabricated by a current-activated pressure assisted melt infiltration process. Coarse, medium and fine meso-structures were prepared with Al alloy filled pores of differing sizes. Materials were subjected to uniaxial compressive loading up to stresses of 668 MPa, leading to the failure of specimens through crack propagation in both phases. As-fabricated and post-failure specimens were analysed by X-ray microscopy and electron microscopy. Quasi-static mechanical testing results revealed that compressive strength was the highest in the fine structured composite materials. While the coarse structured specimens exhibited a compressive strength of 80% relative to this. Reconstructed micro-scale X-ray tomography data revealed different crack propagation mechanisms. Large planar shear cracks propagated throughout the fine structured materials while the coarser specimens exhibited networks of branching cracks propagating preferentially along Al alloy-Ti{sub 2}AlC phase interfaces and through shrinkage pores in the Al alloy phase. Results suggest that control of porosity, compensation for Al alloy shrinkage and enhancement of the Al alloy-Ti{sub 2}AlC phase interfaces are key considerations in the design of high performance metal/Ti{sub 2}AlC phase composites.

  5. The formation of AlB2 in an Al-B master alloy

    International Nuclear Information System (INIS)

    Wang Xiaoming

    2005-01-01

    The formation of borides in an Al-3 wt.%B master alloy, produced via chemical reactions of KBF 4 and aluminium has been investigated. The chemical reactions produce boron, which dissolves into molten aluminium and subsequently forms aluminium borides. Backscattered electron imaging (BEI) of the Al-3 wt.%B master alloy under a scanning electron microscope (SEM) revealed the presence of two types of phases that contain different levels of boron. Combined with X-ray diffraction (XRD) results, the two types of phases are identified as AlB 2 on AlB 12 . This gives a direct evidence for a peritectic reaction of AlB 12 and aluminium, which produces AlB 2 . The thermodynamic properties of the reactions that may be involved are examined, and the presence of AlB 12 phase in the master alloy explained. The observed microstructure is explained according to the peritectic reaction in an Al-B phase diagram. The stability of AlB 2 and AlB 12 at lower temperature than 975 deg. C is clarified

  6. Heterogeneous nucleation of solid Al from the melt by Al 3 Ti : Molecular dynamics simulations

    KAUST Repository

    Wang, Junsheng

    2010-10-27

    It has been known experimentally for some time that Al3 Ti is a powerful nucleant for the solidification of aluminum from the melt; however, a full microscopic understanding is still lacking. To develop this understanding, we have performed molecular dynamics simulations of the nucleation and early stages of growth using published embedded atom method potentials for Al-Ti, but modified by us to stabilize the D 022 structure. We discover that Al3 Ti can indeed be very effective in promoting the growth of solid Al but the manner in which growth takes place depends sensitively on the surface on which the Al nucleates. In particular, complete growth of solid Al from the liquid on the (001) and (110) surfaces of Al3 Ti occurs at a lower temperature than on the (112) surface. This anisotropy agrees with observations in previous experiments. We explain this observation in terms of interfacial energies. On the preferential (111) surface of Al the solid-liquid interfacial energy is highest while the solid-vacuum energy is lowest. Our simulations also show that the extent of ordering taking place in liquid Al close to the Al 3 Ti substrate above the melting point correlates well with the effectiveness of the substrate as a nucleant below the melting temperature: this could provide a computationally efficient scheme to identify good nucleants. © 2010 The American Physical Society.

  7. Predicting glass-forming compositions in the Al-La and Al-La-Ni systems

    International Nuclear Information System (INIS)

    Gargarella, P.; de Oliveira, M.F.; Kiminami, C.S.; Pauly, S.; Kuehn, U.; Bolfarini, C.; Botta, W.J.; Eckert, J.

    2011-01-01

    Research highlights: → The glass-forming ability of the Al-La and Al-La-Ni systems was studied using the λ* and the λ.Δe criteria. → Both criteria predicted with just 1% at. of error the best glass-former verified so far in the Al-La system. → Four new glass-former compositions could be predicted in the Al-La-Ni system using the λ.Δe criterion. → The best glass-former reported so far in the Al-La-Ni system was found. - Abstract: In this work, a criterion considering the topological instability (λ) and the differences in the electronegativity of the constituent elements (Δe) was applied to the Al-La and Al-Ni-La systems in order to predict the best glass-forming compositions. The results were compared with literature data and with our own experimental data for the Al-La-Ni system. The alloy described in the literature as the best glass former in the Al-La system is located near the point with local maximum for the λ.Δe criterion. A good agreement was found between the predictions of the λ.Δe criterion and literature data in the Al-La-Ni system, with the region of the best glass-forming ability (GFA) and largest supercooled liquid region (ΔT x ) coinciding with the best compositional region for amorphization indicated by the λ.Δe criterion. Four new glassy compositions were found in the Al-La-Ni system, with the best predicted composition presenting the best glass-forming ability observed so far for this system. Although the λ.Δe criterion needs further refinements for completely describe the glass-forming ability in the Al-La and Al-La-Ni systems, the results demonstrated that this criterion is a good tool to predict new glass-forming compositions.

  8. Phase relationships in the Al-rich region of the Al-Cu-Er system

    International Nuclear Information System (INIS)

    Zhang Ligang; Masset, Patrick J.; Cao Fuyong; Meng Fangui; Liu Libin; Jin Zhanpeng

    2011-01-01

    Research highlights: → One ternary phase τ 1 -Al 8 Cu 4 Er in Al-rich region with a composition of 59.4-60.4 at.% Al, 32.2-33.8 at.% Cu, and 6.4-7.7 at.% Er is observed in both as-cast and annealed alloys. At 673 K, the binary Al 3 Er phase dissolves about 3.51 at.% Cu. → The calculated solidification paths (based on the CALPHAD method) of as-cast alloys are in agreement with the experimental results. → It can be found that the resultant thermodynamic database can be applied to case studies of as-cast alloys, showing that the literature thermodynamic description of the Al-Cu-Er system is reliable as a working basis for computer-assisted alloy design. - Abstract: The Al-rich region of the ternary Al-Cu-Er system is investigated using the method of X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy. Phase equilibria in the Al-rich region of the Al-Cu-Er system at 673 K have been obtained, and the microstructures of as-cast alloys in the Al-rich region are also investigated. One ternary phase τ 1 -Al 8 Cu 4 Er with a composition of 59.4-60.4 at.% Al, 32.2-33.8 at.% Cu, and 6.4-7.7 at.% Er is observed in both as-cast and annealed alloys. At 673 K, the binary Al 3 Er phase dissolves about 3.51 at.% Cu. The calculated solidification paths (based on the CALPHAD method) of as-cast alloys are in agreement with the experimental results.

  9. Liquidus projection of the Nb-Cr-Al system near the Al3(Nb,Cr) + Cr(Al,Nb) eutectic region

    International Nuclear Information System (INIS)

    Souza, S.A.; Ferrandini, P.L.; Nunes, C.A.; Coelho, A.A.; Caram, R.

    2006-01-01

    The system Nb-Cr-Al was investigated in the region near the Al 3 (Nb,Cr) + Cr(Al,Nb) eutectic and the liquidus projection of that region was determined based on the microstructural characterization of arc melted alloys. The characterization utilized scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), differential thermal analysis (DTA) and X-ray diffraction (XRD). The results allowed one to determine three primary solidification liquidus surfaces ((Cr,Al) 2 Nb, Cr(Al,Nb) and Al 3 (Nb,Cr)), that are originated from the binary systems Cr-Nb, Cr-Al and Al-Nb. It is proposed the occurrence of the invariant reaction L + (Cr,Al) 2 Nb ↔ Al 3 (Nb,Cr) + Cr(Al,Nb) and of a point of minimum, which involves a three phase reaction, L ↔ Al 3 (Nb,Cr) + Cr(Al,Nb). All alloys studied showed formation of the Al 3 (Nb,Cr) + Cr(Al,Nb) eutectic as the last solidification step with Al(Nb)Cr 2 precipitating from Cr(Al,Nb)

  10. Effect of elevated Al and pH on the growth and root morphology of Al-tolerant and Al-sensitive wheat seedlings in an acid soil

    Directory of Open Access Journals (Sweden)

    Md. Toufiq Iqbal

    2014-03-01

    Full Text Available Aluminium ion (Al3+ toxicity and hydrogen ion (H+ activity are the major constraints for plant growth in acid soil. This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8 and Al-sensitive (ES8 wheat seedlings. Different levels of AlCl3 and CaCO3 were added to the soils to manipulate soil pH and extractable Al. The results showed that the bulk soil pH remained constant at pH 4.1 with further applications of AlCl3, and that the seedlings died at the 200 mg AlCl3/kg treatments. The ET8 seedlings responded better than the ES8 seedlings in both low and high Al and pH. The ET8 seedlings had higher root surface areas and root tip numbers than the ES8 seedlings in the Al treatment. In contrast, the ES8 had higher root diameters than the ET8 seedlings due to the elevated Al supply. Apoplast Al increased with the increase of soil available extractable Al, and declined with the decrease of soil extractable Al. The ET8 seedlings accumulated more Al in their apoplast than the ES8 seedlings. This study concluded that accumulation of Al in the apoplast is also involved in Al tolerance mechanism with the addition of organic acid exudation.

  11. Análisis de la transmitancia térmica y resistencia al impacto de los muros de quincha

    Directory of Open Access Journals (Sweden)

    Cuitiño, G.

    2015-03-01

    Full Text Available Wattle construction is a mixed technique used on walls and that belong to the frameworks family. It is constructed with a structural frame (wood or bamboo filled in with a mixture of clay mud in a plastic state and vegetable fiber. In this paper thermal transmittance and soft shock resistance had been studied, thermal transmittance had been measured with wattle samples of 0.10 m thickness, and result in 2.64 W/m2K and with the addition of expanded polystyrene sheet of 5 mm thicknees inside the panel, the transmittance was 2.02 W/m2K. These values are batter than a brick wall of 0.20 m thick with a finish plaster on both sides of the wall, whose value is 4.13 W/m2K. For impact resistance, panels were constructed and tested to soft shock, on 1:1 scale. The permanent deformation in all cases was less than 3.6 mm required by the current standard. This implies that there was no appreciable deformations suffered enclosures providing security to a home. It’s concludes that has a good thermal and structural behavior, plus the characteristics of being economical and appropriate for selfconstruction, make feasible to implement as a massive scale.La quincha es una técnica mixta de muros perteneciente a la familia de los entramados. Compuesta de una armazón estructural (madera o bambú rellena con barro en estado plástico con añadido de fibras vegetales. Se determinó que la transmitancia térmica de un panel de quincha de 0,10 m de espesor, dando como resultado 2,64 W/m2K y con el agregado de una placa de poliestireno expandido de 5 mm de espesor en el interior el panel, la transmitancia es 2,02 W/m2K. Estos valores son comparables al de un muro de ladrillo de 0,20 m de espesor y revocado en ambas caras, cuyo valor es 4,13 W/ m2K. Para la resistencia al impacto, se construyeron paneles en escala 1:1 y se ensayaron al choque blando. Las deformaciones permanentes fue en todos los casos menor de 3,6 mm requerido por la Norma vigente. Esto implica que no

  12. Algunos factores de riesgo asociados al recién nacido con bajo peso Some risk factors associated with the low birth weight infant

    Directory of Open Access Journals (Sweden)

    Nora María Pérez Guirado

    2005-08-01

    Full Text Available Se realizó un estudio observacional, analítico y con un modelo de diseño del tipo de casos y controles de toda las mujeres pertenecientes al área de salud del Policlínico Docente "Bernardo Posse", en el municipio San Miguel del Padrón, que tuvieron un recién nacido con un peso inferior a los 2 500 g en el período comprendido entre los años 1995 y 2004, conformada así la muestra estudio. De forma aleatoria se conformó un grupo control de mujeres con recién nacidos con peso superior o igual a los 2 500 g. Se aplicaron test estadísticos para la determinación del riesgo relativo, el Chi cuadrado y el intervalo de confianza del riesgo relativo de cada factor. En esta investigación quedó demostrado que la edad mayor de 35 años, la anemia, la urosepsis, la hipertensión arterial y las modificaciones cervicales son, entre otros, los antecedentes y riesgos que con más frecuencia aportaron a este indicador en nuestra área de salud. Se observó también la incidencia de los problemas nutricionales relacionados con la ganancia total de peso menor de 8 kg, la valoración nutricional de bajo peso, y el antecedente de recién nacido bajo peso al nacer.An observational analytical case and control study was conducted among all women from the health area of "Bernardo Posse" Teaching Polyclinic, in the municipality of San Miguel del Padrón, that had children with a weight under 2 500 g between 1995 and 2004 (study group. A control group composed of women with newborns with a weight equal to or over 2 500 g was selected at random. Statistical tests, such as Chi square test and the confidence interval of the relative risk of every factor, were applied to determine the relative risk. It was proved in this research that age over 35, anemia, urosepsis, arterial hypertension and the cervical modifications are, among others, the antecedents and risks that influenced the most on this indicator in our health area. It was also observed the incidence of

  13. EVALUACIÓN DE LA SATISFACCIÓN DEL PROFESORADO DE CIENCIAS CON LA ADAPTACIÓN AL ESPACIO EUROPEO DE EDUCACIÓN SUPERIOR

    Directory of Open Access Journals (Sweden)

    Raúl Quevedo-Blasco

    2015-01-01

    Full Text Available La implantación del Espacio Europeo de Educación Superior (EEES ha supuesto una transformación de la educación superior en España. Sin embargo, se desconoce cuál es la actitud del profesorado universitario hacia el proceso y cómo ha afectado esta reforma a sus funciones docentes y como investigador. Por ello, se evalúa el grado de satisfacción hacia distintos aspectos relacionados con el EEES. Los participantes fueron 1.958 profesores que imparten docencia en titulaciones de la rama de Ciencias, pertenecientes a universidades públicas españolas. Se trata de un estudio descriptivo de poblaciones mediante encuesta con muestra probabilística, de tipo transversal. En primer lugar, se realizó la selección de la muestra con un nivel de confianza del 97%. Posteriormente, se elaboró un cuestionario ad hoc, aplicado vía online y compuesto por preguntas relacionadas con: información personal y profesional; aspectos generales e institucionales del EEES; docencia, investigación y gestión; metodología y proceso de enseñanza-aprendizaje; evaluación al alumnado; formación del profesorado; coordinación, organización y recursos del centro; comentarios adicionales y propuestas de mejora. El coeficiente alfa de Cronbach fue de 0,80. Los resultados ponen de manifiesto la insatisfacción de la mayor parte del profesorado con la forma en la que se ha realizado la adaptación de las titulaciones de Ciencias al EEES (46,4%, seguido del 44% que piensa que podría mejorar. También se proponen posibles soluciones que pueden tenerse en cuenta a la hora de establecer políticas educativas eficaces para mejorar la educación su¬perior en España. Finalmente, se reflexiona sobre la influencia del proceso de convergencia europea en el desarrollo profesional del profesorado de esta rama y las consecuencias producidas en el ámbito educativo y científico.

  14. CAMEL vs. discriminante, un análisis de riesgo al sistema financiero venezolano CAMEL vs discriminant, a risk analysis to the Venezuelan financial system

    Directory of Open Access Journals (Sweden)

    Jesús Yoel Crespo

    2011-10-01

    Full Text Available  El artículo presentan las calificaciones de riesgo de las instituciones pertenecientes al sistema financiero venezolano al cierre del primer semestre del año 2010, obtenidas mediante la aplicación de dos metodologías: la primera conocida como CAMEL y la segunda a través de una técnica estadística denominada análisis discriminante, esta última permitirá clasificar a las instituciones financieras en categorías de riesgo, formar un perfil que muestre las característica más representativa de las categoría y cuantificar la probabilidad de pertenecer a una calificación. La investigación pretende establecer si un modelo es mejor que el otro, sino demostrar que se puede complementar el análisis netamente descriptivo con el análisis multivariante, aplicándolo en un área del saber que ha sido poco explotada en Venezuela, permitiendo informar a la colectividad en general, las técnicas estadísticas empleadas en materia de riesgo. AbstractThis paper presents the credit ratings of the institutions belonging to the Venezuelan financial system at the end of the first half of 2010, obtained by applying two methods: the first known as CAMEL and the second through a statistical technique called analysis discriminant, the latter will qualify for financial institutions in risk categories, form a profile that shows the most representative feature of the category and quantify the probability of belonging to a rating. This research does not establish whether one model is better than the other, but show that you can supplement purely descriptive analysis multivariate analysis, applied to an area of knowledge that has been little exploited in Venezuela, allowing to inform the public at large , the statistical techniques used in risk.This paper presents the credit ratings of the institutions belonging to the Venezuelanfinancial system at the end of the first half of 2010, obtained by applying two methods:the first known as CAMEL and the second

  15. Disordered crystal structure of 20H-AlON, Al10O3N8

    International Nuclear Information System (INIS)

    Banno, Hiroki; Funahashi, Shiro; Asaka, Toru; Hirosaki, Naoto; Fukuda, Koichiro

    2015-01-01

    The disordered crystal structure of 20H-AlON (Al 10 O 3 N 8 ) was determined by combined use of X-ray powder diffraction and transmission electron microscopy. The title compound is hexagonal with space group P6 3 /mmc (Z=2) and the unit-cell dimensions are a=0.307082(5) nm, c=5.29447(8) nm and V=0.432376(12) nm 3 . The structural model showed the positional disordering of three of the six Al sites in the unit cell. The reliability indices calculated from the Rietveld method were R wp =6.97%, S (=R wp /R e )=1.68, R p =5.45%, R B =5.13% and R F =4.56%. We interpreted the disordered structure of 20H-AlON as a statistical average of six different types of ordered structural configurations, which are composed of an octahedral [Al(O, N) 6 ] layer and tetrahedral [Al(O, N) 4 ] layers. We demonstrated the high correlations between the hexagonal unit-cell dimensions and the octahedral layer concentrations for AlON and SiAlON polytypoids. - Graphical abstract: Variations of a and c/(n O +n T ) with n O /(n O +n T ). The a and c are the hexagonal unit-cell dimensions of AlON, SiAlON and AlN. The n O and n T are, respectively, the numbers of octahedral and tetrahedral layers in the unit cells. The unit-cell dimensions in literature are plotted in black plus for AlON and black cross for SiAlON. The unit-cell dimensions of AlN are a=0.3110 nm and c=0.4980 nm. - Highlights: • Crystal structure of Al10O3N8 is determined by laboratory X-ray powder diffraction. • The atom arrangements are represented by the split-atom model. • Six types of ordered atom arrangements are derived from the disordered structure. • Hexagonal unit-cell dimensions changed systematically for AlON and SiAlON compounds

  16. Ilhaq al-Masa'il bi Nazairiha dan Penerapannya dalam Bahth al-Masa'il

    Directory of Open Access Journals (Sweden)

    Luthfi Hadi Aminuddin

    2013-11-01

    Full Text Available Abstract: Ilh}a>q al-Masa>’il bi Naz}a>iriha is one of the methods used by Nahdlatul Ulama in resisting the opinion based on (manhaji analytical concept of Islamic jurisprudence (the solution for complex social problems as the main purpose of Islamic shari’ah. As known that, up to now, ilh}a>q has been understood as a process of answering a new case by the way of equating to the old one which is written in the book called al-mu’tabarah. Such ilh}a>q has got many criticisms both from the definitions, procedures and its epistemogical footing. This paper is about to reveal how the NU clerics of Islam understand the concept of Ilh}a>q}, what its epistemological footing was and how the concept was applied in discussing many cases (bah}th al-masa>’il. Based on the writer’s study to several documents of decision results of NU that Ilh}a>q did not only simplify to equate the new cases with the old ones that have been freely discussed in the books of al-mu’tabarah, but both cases should have similar legal substance, that is, both should be under the decrees of laws of al-qawa> ‘id al-fiqhi>yah. Thus, Ilh}a>q is actually answering the problem by applying al-qawa>‘id al-fiqhi>yah, whereas the formulation al-qawa>‘id al-fiqhi>yah itself was set off from the examination of a number of furu>’ generated by qiya> s. This paper also found three variations of the implementation of Ilh}a>q in bah}th al-masa>’il. First, the application of Ilh}a>q was without mentioning al-qawa> ‘id al-fiqhi>yah which covered new cases (mulh}aq and the old case law that has been known in the books of fiqh (mulh}aq bih/attached to. Second, the application of Ilh}a>q was accompanied by mentioning mulh}aq bih and al-qawa> ‘id al-fiqhi>yah. Third, the application of Ilh}a>q, was only by the mentioning al-qawa> ‘id al-fiqhi>yah.

  17. Prinsip Pendidikan Karakter dalam Islam: Studi Komparasi Pemikiran Al-Ghazali dan Burhanuddin Al-Zarnuji

    Directory of Open Access Journals (Sweden)

    Agus Setiawan

    2014-06-01

    Full Text Available The impelemtantion of character education that is done by the Indonesian government recently has been provoked by al-Ghazali and Burhanuddin al-Zarnuji long ago. It was proven by some written thoughts of al-Ghazali and Burhanuddin al-Zarnuji. They were very famous scientists in their era and widely welknown as educational experts who produced some phenomenal thoughts many people use today. Al-Ghazali and Burhanuddin al-Zarnuji lived in the era of Bani Abbasiyah monarchy, but Both of them lived in different era. Al-Ghazali was born first, then Burhanuddin al-Zarnuji. They had different mazhab, al-Ghazali went to the traditional principle of mazhab Syafi’I and Burhanuddin al-Zarnuji went to the modern principle of mazhab Hanafi. The differences, of course, would create a different thought. Still, they might have a similar principle of Islamic character education. The thoughts of character education of al-Ghazali have been poured in the “Ayyuha Walad” focusing to the students’ character building characterized by religiously obedient, skillfull of general and religious knowledge, socially helpful, affectionate, generous, good citizen, and coloring the society. Some applicable thoughts of character education of Ayyuha al-Walad of al-Gazhali to the contemporary education are: the balance of the happiness purposes of the recent life and the life after death, qana’ah and tawakal, affectionate, caring other, patience, honesty, philanthrophy, social works, generousity, democratic, peace makers, and patriotic. Those characters are also directed in the islamic character education nowdays. So that, the thoughts of al-Ghazali positively and responsively are absorbed by the Indonesian government to build the national character widely implementing in the national curriculum based on the local wisdom and the Islamic values. In the end, the students are able to live happily based on the Islamic rules by implementing the good behavior. Similar to the al

  18. El voluntariado como manifestación de la Responsabilidad Social del alumno de Ciencias Económicas

    Directory of Open Access Journals (Sweden)

    Gastón Maximiliano Cabral

    2012-03-01

    Full Text Available Los estudiantes de la Facultad de Ciencias Económicas de la UNNE somos instruidos con conocimientos científicos y técnicos, para desempeñar de una manera arreglada, una profesión independiente. Pero no solo somos personas a las cuales, la Facultad intenta introducir un cumulo de conocimientos, sino que en nuestra formación se incluyen aspectos éticos y culturales, propios de quienes ostentan un título de grado. Es por esto que debemos estar conscientes de la responsabilidad que tenemos por estar dentro de una institución. Y como estudiantes de la Facultad, también somos una de sus caras visibles, por lo que debemos enmarcar nuestras acciones a esta última. Refiriéndonos específicamente a la ’’Responsabilidad Social’’, debemos destacar que esta última, integra nuestra formación y sigue los lineamientos de nuestra cultura académica. En otras palabras, La ‘’Responsabilidad Social’’ está en nuestra esencia. Tal como lo establece el Artículo 2º del Estatuto de la UNNE: ´´La Universidad Nacional del Nordeste (… No se desentiende de los problemas sociales, políticos e ideológicos, sino que debe estudiarlos científicamente. Procura formar integral e interdisciplinariamente a sus componentes e infundir en ellos el espíritu crítico y a la vez el sentido de responsabilidad personal y social (…´´.

  19. “Ajudar Os Outros Me Deixa Feliz": Voluntariado E Felicidade No Projeto Acesso Cidadão

    Directory of Open Access Journals (Sweden)

    Aline Fabia Guerra De Moraes

    2017-12-01

    Full Text Available O presente estudo objetivou identificar relações entre motivação e felicidade no trabalho dos voluntários do Projeto Acesso Cidadão. Para abordar a felicidade foi utilizado instrumento composto por fatores como afetos positivos, afetos negativos e realização no trabalho. Para mensurar os aspectos motivacionais do trabalhador voluntário foi utilizado instrumento que identifica uma hierarquia de ações, proposta em cinco níveis: altruísta, afetivo, amigável, ajustado e ajuizado. As análises demonstraram que os elementos relacionados ao bem-estar impactam positivamente na motivação dos voluntários. Conclui-se que o nível altruísta aparece em maior proporção como motivador e, que os fatores egoístas não demonstraram resultados representativos.

  20. O novo voluntariado e a comunicação de ONGs no contexto da América Latina

    Directory of Open Access Journals (Sweden)

    Gino Giacomini-Filho

    2016-07-01

    Full Text Available This study aims to present and discuss the new volunteering in communication activities of NGOs in the Latin American context. This is an exploratory study that makes use of theoretical models of the new configurations of volunteer work and its interaction with the statement of NGOs. The research also used the case study on the new volunteering in functional communication activities of Opção Brasil in 2014, NGO integrated in Opción Latinoamérica (OLA. The results show that the spaces of participation in NGOs created and encouraged for the volunteer work in communication activities enhance either volunters as these organizations. The communication model found in Opção Brasil has heterogeneous characteristics as: motivations and interests of volunteer; resource limits and high volume of communicative actions of the organization; dependence of students and professionals voluntaries to fulfill their organizational mission.

  1. TURISMO E VOLUNTARIADO: UM ESTUDO SOBRE A EXPERIÊNCIA SOLIDÁRIA NO ÂMBITO DO TURISMO

    Directory of Open Access Journals (Sweden)

    Yousra Makanse

    2014-07-01

    Full Text Available Esta pesquisa teve por objetivo analisar as expectativas do viajante em relação ao turismo voluntário, buscando entender suas motivações, seu perfil e suas opiniões sobre a viagem. Para isso, utilizou-se a técnica da observação participante e da entrevista aberta com um grupo de pessoas que desenvolve esse tipo de turismo, com o objetivo de compreender o ponto de vista do viajante. A entidade escolhida para a pesquisa foi a organização não governamental Um Teto Para Meu País, presente em 19 países da América Latina, e o trabalho de campo foi realizado na Argentina em julho de 2011 durante os Trabajos de Invierno, que contaram com a presença de mais de 1200 voluntários. As entrevistas abertas foram realizadas com três voluntários de diferentes nacionalidades (França, Chile e Brasil. Os jovens entrevistados tinham entre 20 e 22 anos, frequentavam curso superior e realizaram a viagem de modo independente (sem intermediação de agências de viagens. Através das entrevistas e da observação participante, identificou-se que os turistas voluntários têm motivações pessoais distintas, sendo as mais citadas o sentimento de justiça, de igualdade e a reflexão gerada pela atividade. O contato com os moradores também é muito importante para a escolha por esse tipo de turismo, pois o turista tem a oportunidade de conhecer a região, os hábitos e costumes de seus habitantes de modo mais intenso.

  2. Alpha and beta stabilizer character of Al in Zr-Nb-Al alloys

    International Nuclear Information System (INIS)

    Peruzzi Bardella, A.; Bolcich, J.C.

    1987-01-01

    The T β/α+β of Zr5Nb and Zr5Nb2Al (weight %) were determined in order to observe the alpha-stabilizer character of Al in ternary Zr-Nb-Al alloys. Techniques employed were change of resistivity with temperature in dynamic experiences, and metallography of samples quenched to room temperature after isothermal annealings. The T β/α+β of the ternary resulted 17 ± 8 deg C higher than that of the binary alloy. In addition, taking into account the results of previous investigations of the transformation of beta on quenching Zr-Nb-Al alloys from the beta field to room temperature, it is concluded that the beta-stabilizer character of Nb is stronger than the alpha-stabilizer character of Al in these Zr alloys, and that the Al can have important influence on the mechanical properties by the appearance of TRIP effect. (Author) [es

  3. KONSEPSI AL-QURAN DAN AL-HADITS TENTANG OPERASIONAL BANK SYARIAH

    Directory of Open Access Journals (Sweden)

    Muhammad Ardy Zaini

    2015-01-01

    Full Text Available Islam hadir dengan beberapa tujuan, diantaranya adalah terciptanya khoirul ummah dan rahmatan lil’alamin dengan al-Qur’an dan al-Hadits sebagai penuntun umat Islam demi tercapainya tujuan tersebut. Sebagai pedoman hidup, al-Qur’an dan al-Hadits memberikan berbagai petunjuk tentang keteraturan dan permasalahan hidup, termasuk didalamnya mengenai perbankan yang telah memenuhi hampir separuh sisi-sisi kehidupan manusia. Untuk memaksimal ajaran syariah secara kaffah, maka nilai-nilai yang terdapat dalam al-Quran harus mampu diturunkan pada tataran praktis. Salah satu usaha dan langkah dalam rangka menemukan formula perbankan masa depan, al-Quran dan Hadits memiliki konsepsi dalam kegiatan operasional Bank Syariah. Hal ini dilakukan untuk membentuk sikap mental atau watak yang terjabarkan dalam pola berpikir, cara berbicara, dan etika bertingkah laku, sebagai ekspresi jiwa dari manusia yang beriman dan bertakwa kepada Allah Swt. Agar umat Islam mampu menjadi umat yang unggul (khayr ummah.

  4. Effects of Al(III and Nano-Al13 Species on Malate Dehydrogenase Activity

    Directory of Open Access Journals (Sweden)

    Rong Fu Chen

    2011-05-01

    Full Text Available The effects of different aluminum species on malate dehydrogenase (MDH activity were investigated by monitoring amperometric i-t curves for the oxidation of NADH at low overpotential using a functionalized multi-wall nanotube (MWNT modified glass carbon electrode (GCE. The results showed that Al(III and Al13 can activate the enzymatic activity of MDH, and the activation reaches maximum levels as the Al(III and Al13 concentration increase. Our study also found that the effects of Al(III and Al13 on the activity of MDH depended on the pH value and aluminum speciation. Electrochemical and circular dichroism spectra methods were applied to study the effects of nano-sized aluminum compounds on biomolecules.

  5. Effects of Al(III) and nano-Al13 species on malate dehydrogenase activity.

    Science.gov (United States)

    Yang, Xiaodi; Cai, Ling; Peng, Yu; Li, Huihui; Chen, Rong Fu; Shen, Ren Fang

    2011-01-01

    The effects of different aluminum species on malate dehydrogenase (MDH) activity were investigated by monitoring amperometric i-t curves for the oxidation of NADH at low overpotential using a functionalized multi-wall nanotube (MWNT) modified glass carbon electrode (GCE). The results showed that Al(III) and Al(13) can activate the enzymatic activity of MDH, and the activation reaches maximum levels as the Al(III) and Al(13) concentration increase. Our study also found that the effects of Al(III) and Al(13) on the activity of MDH depended on the pH value and aluminum speciation. Electrochemical and circular dichroism spectra methods were applied to study the effects of nano-sized aluminum compounds on biomolecules.

  6. 60Co gamma radiation effect on AlGaN//AlN/GaN HEMT devices

    International Nuclear Information System (INIS)

    Wang Yanping; Luo Yinhong; Wang Wei; Zhang Keying; Guo Hongxia; Guo Xiaoqiang; Wang Yuanming

    2013-01-01

    The testing techniques and experimental methods of the 60 Co gamma irradiation effect on AlGaN/AlN/GaN high electron mobility transistors (HEMTs) are established. The degradation of the electrical properties of the device under the actual radiation environment are analyzed theoretically, and studies of the total dose effects of gamma radiation on AlGaN/AlN/GaN HEMTs at three different radiation bias conditions are carried out. The degradation patterns of the main parameters of the AlGaN/AlN/GaN HEMTs at different doses are then investigated, and the device parameters that were sensitive to the gamma radiation induced damage and the total dose level induced device damage are obtained. (authors)

  7. 27Al NMR studies of NpPd5Al2

    International Nuclear Information System (INIS)

    Chudo, H.; Sakai, H.; Tokunaga, Y.; Kambe, S.; Aoki, D.; Homma, Y.; Shiokawa, Y.; Haga, Y.; Ikeda, S.; Matsuda, T.D.; Onuki, Y.; Yasuoka, H.

    2009-01-01

    We present 27 Al NMR studies for a single crystal of the Np-based superconductor NpPd 5 Al 2 (T c =4.9K). We have observed a five-line 27 Al NMR spectrum with a center line and four satellite lines separated by first-order nuclear quadrupole splittings. The Knight shift clearly drops below T c . The temperature dependence of the 27 Al nuclear spin-lattice relaxation rate shows no coherence peak below T c , indicating that NpPd 5 Al 2 is an unconventional superconductor with an anisotropic gap. The analysis of the present NMR data provides evidence for strong-coupling d-wave superconductivity in NpPd 5 Al 2 .

  8. Potential skin involvement in ALS: revisiting Charcot's observation - a review of skin abnormalities in ALS.

    Science.gov (United States)

    Paré, Bastien; Gros-Louis, François

    2017-07-26

    Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease affecting motor neurons of the brain and spinal cord, leading to progressive paralysis and death. Interestingly, many skin changes have been reported in ALS patients, but never as yet fully explained. These observations could be due to the common embryonic origin of the skin and neural tissue known as the ectodermal germ layer. Following the first observation in ALS patients' skin by Dr Charcot in the 19th century, in the absence of bedsores unlike other bedridden patients, other morphological and molecular changes have been observed. Thus, the skin could be of interest in the study of ALS and other neurodegenerative diseases. This review summarizes skin changes reported in the literature over the years and discusses about a novel in vitro ALS tissue-engineered skin model, derived from patients, for the study of ALS.

  9. Estudio comparativo del rendimiento de las funciones ejecutivas en la corteza prefrontal dorsolateral, orbitofrontal y frontomedial en adolescentes policonsumidores de sustancias psicoactivas, vinculados al sistema de responsabilidad penal en paralelo con adolescentes que no se encuentran bajo esta misma condición

    Directory of Open Access Journals (Sweden)

    Diego Alejandro Calle Sandoval

    2017-07-01

    Full Text Available La presente investigación se realizó bajo una metodología cuantitativa comparativa y de corte transversal, la cual tuvo como objetivo la realización de un estudio del rendimiento de las funciones ejecutivas en la corteza prefrontal dorsolateral, orbitofrontal y frontomedial en adolescentes, entre los 14 y 18 años de edad, policonsumidores de sustancias psicoactivas (SPA y vinculados al sistema de responsabilidad penal, en paralelo con adolescentes pertenecientes a una institución educativa que no se encuentran bajo esta misma condición; todos ellos del departamento del Quindío. A la población estudio se le aplicó una prueba neuropsicológica de funciones ejecutivas y lóbulos frontales (BANFE 2, cuyos resultados dan cuenta de que el grado de escolaridad –sea alto o inferior– no es un factor influyente en el rendimiento ejecutivo; además, evidencian diferencias significativas en el rendimiento de las funciones ejecutivas en la población bajo responsabilidad penal con antecedentes de policonsumo, encontrándose alteración en la corteza prefrontal dorsolateral, orbitofrontal y frontomedial, a diferencia de la población estudiantil que no cumple con esta condición.

  10. A note on Wang et al's attack on Zhang et al's multiparty quantum secret sharing

    International Nuclear Information System (INIS)

    Gao Gan

    2012-01-01

    Recently, Wang et al (2008 Phys. Lett. A 373 65) proposed an attack on Zhang et al's (2007 Opt. Commun. 269 418) multiparty quantum secret sharing scheme, in which the first and the last agent are reported to be able to cooperatively eavesdrop on all the secret messages without being detected. In this paper, we show that in Wang et al's attack, on average no more than half the secret messages can be eavesdropped. (paper)

  11. Effect of the interface in laminated composites of Al-1100 and Al-2024

    International Nuclear Information System (INIS)

    Godefroid, L.B.

    1983-01-01

    Laminated composites consisting of alternating layers of Al-1100 and Al-2024 were produced by hot rolling, with 45% Al-2024 volume fraction. These composites were subjected to cyclic thermal treatment (various numbers of cycles) and to isothermal treatment (various numbers of cycles) and to isothermal treatment (at peak temperature and for times equivalent to those of the thermal cycles. Microhardness, tensile and fatigue crack arrester modes) were studied in the initial state and after treatments. (E.G.) [pt

  12. Generation and evolution of nanoscale AlP and Al{sub 13}Fe{sub 4} particles in Al-Fe-P system

    Energy Technology Data Exchange (ETDEWEB)

    Qiao, Huan; Gao, Tong; Zhu, Xiangzhen; Wu, Yuying; Qian, Zhao; Liu, Xiangfa, E-mail: xfliu@sdu.edu.cn

    2015-02-15

    Highlights: • Diffusion and gradual solid reactions between Al and Fe{sub x}P phases in Al-Fe-P alloy were investigated. • Nanoscale AlP clusters are in-situ generated and evolve during the whole process. • This novel Al-Fe-P alloy has an excellent low-temperature refining performance on hypereutectic Al-Si alloy. - Abstract: In this paper, the gradual solid reactions between Al and Fe{sub x}P phases in Al-Fe-P alloy were investigated. The results show that the whole reaction process undergoes four main stages: the diffusion of Al atom, the generation of (Al, Fe, P) intermediate compound, the precipitation of nano AlP and Al{sub 13}Fe{sub 4} clusters and their growth to submicron particles. The microstructure of Fe-P particles evolves from the “egg-type”, the “sponge-type” to the “sesame-cake” structure. AlP and Al{sub 13}Fe{sub 4} nano phases have in-situ generated and evolved during the whole process. The gradual reaction mechanism has been discussed. Furthermore, a novel Al-Fe-P alloy which contains (Al, Fe, P) intermediate compounds and nano AlP particles has been synthesized and its low-temperature refining performance on A390 alloy has also been investigated.

  13. Solutional Landforms of Gabal Al-Qaraha, the Oasis of Al-Hasa, Saudi Arabia

    OpenAIRE

    Embabi, Nabil S.

    1981-01-01

    Jabal Al-Qarah is one of the small outlier hills at the Oasis of Al-Hasa, lying at about lOkm ENE of Al-Hafuf Town. The solutional forms of Al-Qarah hill discussed in this paper are as follows : 1. A calcareous duricrust which covers the top and some of the slopes of the hill. 2. Rock Pillars which are long columns of white lime-stone. 3. Huge crevasses which are wide erosional openings along vertical joints. 4. Narrow, sinuous caves inside the hill. 5. Pedestal rocks with mushroo...

  14. Tetragonal phase in Al-rich region of U-Fe-Al system

    International Nuclear Information System (INIS)

    Meshi, L.; Zenou, V.; Ezersky, V.; Munitz, A.; Talianker, M.

    2005-01-01

    A new ternary aluminide U 2 FeAl 20 with the approximate composition Al-4.2at% Fe-8.5at% U was observed in the Al-rich corner of the U-Al-Fe system. Transmission electron microscopy and electron microdiffraction technique were used for characterization of the structure of this phase. It has a tetragonal unit cell with the parameters a=12.4A and c=10.3A and can be described by the space group I4-bar 2m

  15. Study on Mg/Al Weld Seam Based on Zn–Mg–Al Ternary Alloy

    Directory of Open Access Journals (Sweden)

    Liming Liu

    2014-02-01

    Full Text Available Based on the idea of alloying welding seams, a series of Zn–xAl filler metals was calculated and designed for joining Mg/Al dissimilar metals by gas tungsten arc (GTA welding. An infrared thermography system was used to measure the temperature of the welding pool during the welding process to investigate the solidification process. It was found that the mechanical properties of the welded joints were improved with the increasing of the Al content in the Zn–xAl filler metals, and when Zn–30Al was used as the filler metal, the ultimate tensile strength could reach a maximum of 120 MPa. The reason for the average tensile strength of the joint increasing was that the weak zone of the joint using Zn–30Al filler metal was generated primarily by α-Al instead of MgZn2. When Zn–40Al was used as the filler metal, a new transition zone, about 20 μm-wide, appeared in the edge of the fusion zone near the Mg base metal. Due to the transition zones consisting of MgZn2- and Al-based solid solution, the mechanical property of the joints was deteriorated.

  16. The effectiveness of ERC advanced life support (ALS) provider courses for the retention of ALS knowledge.

    Science.gov (United States)

    Fischer, Henrik; Strunk, Guido; Neuhold, Stephanie; Kiblböck, Daniel; Trimmel, Helmut; Baubin, Michael; Domanovits, Hans; Maurer, Claudia; Greif, Robert

    2012-02-01

    Out-of-hospital emergency physicians in Austria need mandatory emergency physician training, followed by biennial refresher courses. Currently, both standardized ERC advanced life support (ALS) provider courses and conventional refresher courses are offered. This study aimed to compare the retention of ALS-knowledge of out-of-hospital emergency physicians depending on whether they had or had not participated in an ERC-ALS provider course since 2005. Participants (n=807) from 19 refresher courses for out-of-hospital emergency physicians answered eight multiple-choice questions (MCQ) about ALS based on the 2005 ERC guidelines. The pass score was 75% correct answers. A multivariate logistic regression analyzed differences in passing scores between those who had previously participated in an ERC-ALS provider course and those who had not. Age, gender, regularity of working as an out-of-hospital emergency physician and the self-reported number of real resuscitation efforts within the last 6months were entered as control variables. Out-of-hospital emergency physicians who had previously attended an ERC-ALS provider course had a significantly higher chance of passing the MCQ test (OR=1.60, p=0.015). Younger age (OR=0.95, pERC-ALS provider course since 2005 had a higher retention of ALS knowledge compared to non-ERC-ALS course participants. Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.

  17. Chemical failure modes of AlQ3-based OLEDs: AlQ3 hydrolysis.

    Science.gov (United States)

    Knox, John E; Halls, Mathew D; Hratchian, Hrant P; Schlegel, H Bernhard

    2006-03-28

    Tris(8-hydroxyquinoline)aluminum(III), AlQ3, is used in organic light-emitting diodes (OLEDs) as an electron-transport material and emitting layer. The reaction of AlQ3 with trace H2O has been implicated as a major failure pathway for AlQ3-based OLEDs. Hybrid density functional calculations have been carried out to characterize the hydrolysis of AlQ3. The thermochemical and atomistic details for this important reaction are reported for both the neutral and oxidized AlQ3/AlQ3+ systems. In support of experimental conclusions, the neutral hydrolysis reaction pathway is found to be a thermally activated process, having a classical barrier height of 24.2 kcal mol(-1). First-principles infrared and electronic absorption spectra are compared to further characterize AlQ3 and the hydrolysis pathway product, AlQ2OH. The activation energy for the cationic AlQ3 hydrolysis pathway is found to be 8.5 kcal mol(-1) lower than for the neutral reaction, which is significant since it suggests a role for charge imbalance in promoting chemical failure modes in OLED devices.

  18. Al-matrix composite materials reinforced by Al-Cu-Fe particles

    International Nuclear Information System (INIS)

    Bonneville, J; Laplanche, G; Joulain, A; Gauthier-Brunet, V; Dubois, S

    2010-01-01

    Al-matrix material composites were produced using hot isostatic pressing technique, starting with pure Al and icosahedral (i) Al-Cu-Fe powders. Depending on the processing temperature, the final reinforcement particles are either still of the initial i-phase or transformed into the tetragonal ω-Al0 0.70 Cu 0.20 Fe 0.10 crystalline phase. Compression tests performed in the temperature range 293K - 823K on the two types of composite, i.e. Al/i and Al/ω, indicate that the flow stress of both composites is strongly temperature dependent and exhibit distinct regimes with increasing temperature. Differences exist between the two composites, in particular in yield stress values. In the low temperature regime (T ≤ 570K), the yield stress of the Al/ω composite is nearly 75% higher than that of the Al/i composite, while for T > 570K both composites exhibit similar yield stress values. The results are interpreted in terms of load transfer contribution between the matrix and the reinforcement particles and elementary dislocation mechanisms in the Al matrix.

  19. Rupture of Al matrix in U-Mo/Al dispersion fuel by fission induced creep

    Energy Technology Data Exchange (ETDEWEB)

    Jeong, Gwan Yoon; Sohn, Dong Seong [UNIST, Daejeon (Korea, Republic of); Kim, Yeon Soo [Argonne National Laboratory, Argonnge (United States); Lee, Kyu Hong [KAERI, Daejeon (Korea, Republic of)

    2016-05-15

    This phenomenon was found specifically in the dispersion fuel plate with Si addition in the Al matrix to suppress interaction layer (IL) formation between UMo and Al. It is known that the stresses induced by fission induced swelling in U-Mo fuel particles are relieved by creep deformation of the IL, surrounding the fuel particles, that has a much higher creep rate than the Al matrix. Thus, when IL growth is suppressed, the stress is instead exerted on the Al matrix. The observed rupture in the Al matrix is believed to be caused when the stress exceeded the rupture strength of the Al matrix. In this study, the possibility of creep rupture of the Al matrix between the neighboring U-Mo fuel particles was examined using the ABAQUS finite element analysis (FEA) tool. The predicted rupture time for a plate was much shorter than its irradiation life indicating a rupture during the irradiation. The higher stress leads Al matrix to early creep rupture in this plate for which the Al matrix with lower creep strain rate does not effectively relieve the stress caused by the swelling of the U-Mo fuel particles. For the other plate, no rupture was predicted for the given irradiation condition. The effect of creeping of the continuous phase on the state of stress is significant.

  20. Al Qaeda in the Arabian Peninsula (AQAP): An Al Qaeda Affiliate Case Study

    Science.gov (United States)

    2017-10-01

    Villarosa, Al-Qaeda in Yemen, Carnegie Endowment, July 7, 2009, http://carnegieendowment.org/2009/07/07/Al-Qaeda-in-yemen- event-1372. 53 Brian Whitaker...73 Khaled Fattah, “Yemen’s Insecurity Dilemma,” Yemen Times, February 11, 2014, http:// carnegie -mec.org/2014/02...Johnsen, and Shari Villarosa, “Al-Qaeda in Yemen.” Carnegie Endowment. July 7, 2009. http://carnegieendowment.org/2009/07/07/Al-Qaeda-in- yemen-event

  1. KITAB AL-SANĪ AL-MAṬĀLIB: INTERKONEKSI NAHWU DAN TASAWUF

    Directory of Open Access Journals (Sweden)

    Zakiyah Zakiyah

    2012-12-01

    Tulisan ini mereview buku yang berjudul al-Sanī al-Maṭālib yang ditulis oleh Kiai Nur Iman Mlangi Yogyakarta. Buku ini ditulis dalam bahasa Arab yang me­ngandung interkoneksi antara ilmu Nahwu (tata bahasa Arab dengan mis­tisis­me. Buku ini sangat menarik karena kenyataan bahwa kedua pengetahuan tersebut memiliki aturan sendiri-sendiri. Selain itu, sangat sedikit penulis yang menulis dengan gaya seperti itu. Salah satunya adalah Syaikh Abdul Qadir bin Ahmad al-Kuhany dengan karyanya yang berjudul Manniyat al-Fāqir al-Munjarid wa Sayrat al-Murīd al-Mutafarrid. Buku al-Saniy al-Muthalib diduga telah ditulis pada akhir abad ke-18 atau awal abad ke-19, menurut periode kehidupan Kiai Nur Iman yaitu sekitar pertengahan abad ke-18. Aturan Nahwu dalam buku ini dijelaskan secara teosofi yang dimulai dengan penjelasan mengenai tauhid (keesaan Tuhan sebagai kajian dasar bagi orang Islam, yang diikuti dengan makna dari masing-masing aturan bahasa Arab dalam aspek mistiknya.

  2. Growth of CdTe: Al films; Crecimiento de peliculas de CdTe: Al

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez A, M.; Zapata T, M. [CICATA-IPN, 89600 Altamira, Tamaulipas (Mexico); Melendez L, M. [CINVESTAV-IPN, A.P. 14-740, 07000 Mexico D.F. (Mexico); Pena, J.L. [CINVESTAV-IPN, A.P. 73 Cordemex, 97310 Merida, Yucatan (Mexico)

    2006-07-01

    CdTe: AI films were grown by the close space vapor transport technique combined with free evaporation (CSVT-FE). The Aluminum (Al) evaporation was made by two kinds of sources: one made of graphite and the other of tantalum. The films were deposited on glass substrates. The Al source temperature was varied maintaining the CdTe source temperature fixed as well as the substrate temperature. The films were characterized by x-ray energy dispersive analysis (EDAX), x-ray diffraction and optical transmission. The results showed for the films grown with the graphite source for Al evaporation, the Al did not incorporate in the CdTe matrix, at least to the level of EDAX sensitivity; they maintained the same crystal structure and band gap. For the samples grown with the tantalum source, we were able to incorporate the Al. The x-ray diffraction patterns show that the films have a crystal structure that depends on Al concentration. They were cubic up to 2.16 at. % Al concentration; for 19.65 at. % we found a mixed phase; for Al concentration higher than 21 at. % the films were amorphous. For samples with cubic structure it was found that the lattice parameter decreases and the band gap increases with Al concentration. (Author)

  3. Phenotypic and genotypic studies of ALS cases in ALS-SMA families.

    Science.gov (United States)

    Corcia, Philippe; Vourc'h, Patrick; Blasco, Helene; Couratier, Philippe; Dangoumau, Audrey; Bellance, Remi; Desnuelle, Claude; Viader, Fausto; Pautot, Vivien; Millecamps, Stephanie; Bakkouche, Salah; Salachas, FranÇois; Andres, Christian R; Meininger, Vincent; Camu, William

    2018-03-01

    Amyotrophic lateral sclerosis (ALS) and spinal muscular atrophy (SMA) are the most frequent motor neuron disorders in adulthood and infancy, respectively. There is a growing literature supporting common pathophysiological patterns between those disorders. One important clinical issue for that is the co-occurrence of both diseases within a family. To collect families in which ALS and SMA patients co-exist and describe the phenotype and the genotype of ALS patients. Nine families with co-occurrence of SMA and ALS have been gathered over the last 15 years. Epidemiological, phenotype and genetic status were collected. Out of the nine families, six corresponded to the criteria of familial ALS (FALS). Clinical data were available for 11 patients out of the 15 ALS cases. Mean age of onset was 58.5 years, site of onset was lower limbs in nine cases (81.8%), median duration was 22 months. Four ALS patients carried a mutation: three mutations in SOD1 gene (G147N in two cases and one with E121G) and one repeat expansion in the C9ORF72 gene. Three patients had abnormal SMN1 copy numbers. While the high proportion of familial history of ALS cases in these ALS-SMA pedigrees could have suggested that these familial clusters of the two most frequent MND rely on a genetic background, we failed to exclude that this occurred by chance.

  4. Characterization of N-polar AlN in GaN/AlN/(Al,Ga)N heterostructures grown by metal-organic chemical vapor deposition

    Science.gov (United States)

    Li, Haoran; Mazumder, Baishakhi; Bonef, Bastien; Keller, Stacia; Wienecke, Steven; Speck, James S.; Denbaars, Steven P.; Mishra, Umesh K.

    2017-11-01

    In GaN/(Al,Ga)N high-electron-mobility transistors (HEMT), AlN interlayer between GaN channel and AlGaN barrier suppresses alloy scattering and significantly improves the electron mobility of the two-dimensional electron gas. While high concentrations of gallium were previously observed in Al-polar AlN interlayers grown by metal-organic chemical vapor deposition, the N-polar AlN (Al x Ga1-x N) films examined by atom probe tomography in this study exhibited aluminum compositions (x) equal to or higher than 95% over a wide range of growth conditions. The also investigated AlN interlayer in a N-polar GaN/AlN/AlGaN/ S.I. GaN HEMT structure possessed a similarly high x content.

  5. 26Al in the interstellar medium

    International Nuclear Information System (INIS)

    Clayton, D.D.; Leising, M.D.

    1987-01-01

    Several different lines of physical reasoning have converged on the importance of the radioactive nucleus 26 Al. The sciences of meteoritics, nucleosynthesis, gamma-ray astronomy, galactic chemical evolution, solar system formation, and interstellar chemistry all place this nucleus in a central position with possible profound implications. Perhaps more importantly the study of this radioactivity can unite these diverse fields in a complicated framework which will benefit all of them. This review traces the evolution of ideas concerning 26 Al in the context of these disciplines. 26 Al was first discussed for the possibility that its decay energy could melt meteorite parent bodies, and its daughter, 26 Mg, was later found in meteorites with enhanced abundance. It was also among the first radioactivities expected to be synthesized in interestingly large quantities in nulceosynthetic events. The first definitive detection of gamma-rays from an interstellar radioactivity is that of 1.809 MeV gamma-rays from 26 Al. This discovery has many implications, some of which are outlined here. The whole problem of isotopic anomalies in meteorites is greatly influenced by the specific issues surrounding excess 26 Mg, whether it represents in situ decay of 26 Al or memory of conditions of the ISM. The relationships among these ideas and their implications are examined. (orig.)

  6. Kerja Perspektif Al-Qur'an

    Directory of Open Access Journals (Sweden)

    Ahmad Munir

    2011-05-01

    Full Text Available The moslem ethics of life is based on movement as ex­pressed in certain terms like al-sharī’ah, al-tarīqah, al-sirāt, al-sabīl and al-manhaj, that make sense of way and teachings to achieve good life. Islam obliges and gives appreciation of the achievements of Mus­lims. The Qur’an uses several terms to refer to such work; ‘charity, kasb, juhd, ibtighâ’, sa ’yu and su ’âl. From this concept, the Qur’an considers work as nob­le, while begging is despicable. Work means thankful to God for the potential He bestows. The Qur’an promotes work not only because it is the way to achieve the wealth, but also because it possesses the its sacred value for the benefit of fulfilling livelihood. Therefore the work should also be done based on ethical values .

  7. Neuropsychoanalyse: Hirntätigkeit als Zeichenprozess

    Directory of Open Access Journals (Sweden)

    Milan Scheidegger

    2014-12-01

    Full Text Available Fassen wir Geist und Natur nicht als Dichotomie sondern im Sinne von Peirce als Kontinuität auf, dann lässt die genauere Betrachtung des Körpers semiotische Leibphänomene als Zeichen einer Sprache erkennen, deren Grammatik es – im Sinne einer «Bioarchäologie» – zu entschlüsseln gilt. Hierfür stellen die Neurowissenschaften mit modernen Visualisierungstechniken geeignete epistemische Hilfsmittel bereit: Sie machen körperliche Vorgänge des Informationsaustausches sichtbar und heben die semiotisch wenig erschlossene Ebene komplexer neuronaler Zeichentransformationen ans Licht. Um eine Integration der physiologischen und psychologischen Perspektive bemüht sich das transdisziplinäre Projekt der «Neuropsychoanalyse». Sie hebt die Relevanz natürlicher Verarbeitungsmechanismen des Körpers für die subjektiv geprägten Zeichentransformationen des mentalen Erlebens hervor und weicht eine semiotisch allzu undurchlässige Grenzziehung zwischen Psycho- und Neurodynamik etwas auf. Die Hirntätigkeit als potenziell erkenntnisleitenden Zeichenprozess zu verstehen, darf aber nicht in einer unreflektierten Bezugnahme auf neuronale Zeichensysteme münden, wenn die Neuropsychoanalyse mehr als nur eine medienwirksame Neurokarikatur psychodynamischer Konzepte erreichen will.

  8. Threshold states in /sup 26/Al revisited

    Energy Technology Data Exchange (ETDEWEB)

    Champagne, A E; McDonald, A B; Wang, T F; Howard, A J; Magnus, P V; Parker, P D

    1986-03-31

    Threshold states in /sup 26/Al have been re-examined using the /sup 27/Al(/sup 3/He,..cap alpha..)/sup 26/Al and /sup 25/Mg(/sup 3/He,d..gamma..)/sup 26/Al reactions in order to resolve apparent ambiguities in some of the previously reported properties of these states. In particular, the s-wave resonance strength reported at E=37 keV is now found to be located at E/sub c.m./=57.54 keV, and the proton width for the 374 keV resonance has been revised to GAMMA/sub p/=0.82 eV. These results have been used to calculate a new resonance strength of ..omega gamma..= 1.6 x 10/sup -13/ eV for the 57.54 keV resonance. As a result, the stellar production rate for /sup 26/Al is increased by a factor approx.=3-38 for temperatures T/sub 9/=0.05-0.1.

  9. Deletion of ALS5, ALS6 or ALS7 increases adhesion of Candida albicans to human vascular endothelial and buccal epithelial cells

    OpenAIRE

    ZHAO, XIAOMIN; OH, SOON-HWAN; HOYER, LOIS L.

    2007-01-01

    C. albicans yeast forms deleted for ALS5, ALS6 or ALS7 are more adherent than a relevant control strain to human vascular endothelial cell monolayers and buccal epithelial cells. In the buccal and vaginal reconstituted human epithelium (RHE) disease models, however, mutant and control strains caused a similar degree of tissue destruction. Deletion of ALS5 or ALS6 significantly slowed growth of the mutant strain; this phenotype was not affected by addition of excess uridine to the culture medi...

  10. Factores maternos y bajo peso al nacer, Bahía Honda Maternal factors and low-weight at birth, Bahia Honda

    Directory of Open Access Journals (Sweden)

    Xiomara Elsa Martínez Argudín

    2011-03-01

    Full Text Available Introducción: el bajo peso al nacer ha constituido un enigma para la ciencia a través de los tiempos. Objetivo: realizar una evaluación de algunos de los factores de riesgo maternos asociados al bajo peso al nacer en el municipio Bahía Honda durante el período de enero 2006-junio 2009.Métodos: se realizó un estudio observacional, descriptivo y transversal. Este permitió hacer una caracterización de las gestantes, cuyo producto fueron los niños con bajo peso al nacer. Se aplicó una encuesta tipo planilla de recolección de datos, la cual fue aplicada a las historias clínicas obstétricas, pertenecientes a los Policlínicos Docentes "Manuel González Díaz" y "Pablo de la Torriente Brau"; los datos fueron procesados mediante la estadística descriptiva: medida de resumen para variables cuantitativas y cualitativas, y el estadígrafo de Ji cuadrado para la correlación entre variables. Resultados: el mayor porciento de niños con bajo peso al nacer correspondió a las madres comprendidas entre los 20-24 años y 30-34 años de edad y entre las 34.0-36.6 semanas y 37.0 semanas y más de gestación. La mayoría comenzaron la gestación con un peso adecuado, sin embargo, predominó la ganancia de insuficiente durante ésta. La hipertensión arterial predominó entre los antecedentes patológicos de las gestantes. Conclusiones: se ha demostrado que los factores de riesgo maternos tienen una importante asociación con el bajo peso al nacer, es por ello, la necesidad de identificarlos en el momento oportuno y modificarlos, con el objetivo de proporcionar bienestar materno y fetal.Introduction: low-weight at birth constitutes an enigma to the current science. Objective: to carry out an assessment of some maternal risk factors associated with low-weight at birth in Bahia Honda municipality from January 2006 to June 2009. Methods: an observational, descriptive and cross-sectional study was conducted which allowed characterizing women who

  11. MOSQUE ARCHITECTURE AS A SUSTAINABLE BUILDING IN URBAN (Case Study: Al Markas Al Islamic Mosque Makassar

    Directory of Open Access Journals (Sweden)

    Imriyanti Imriyanti

    2014-02-01

    Full Text Available Abstract Mosque Architecture is a part of Islamic architecture. Mosque should be fused with elements of nature because its function as a place to pray to God who created the universe. Al Markas Al Islamic Makassar mosque is used as a center of Islamic aspirations of the people and the government to accommodate all the activities of moslems in Makassar. Through this function, the provision of Al Markas Al Islamic mosque began from the desire of Islamic societies in Makassar, which wants the Islamic center to be equipped with facilities and infrastructure as well as architectural, monumental buildings and structures that can be last for hundreds of years (continuous, blend with the environment, and also can be used by the public. Having regard to the function of a mosque especially at the Al Markas Al Islamic Makassar mosque, then the problem that arise is how the Al Markas Al Islamic mosque can be survived/sustainable  in order  to function  as a place  of worship  and  as a center  of Islam.  This research  is a descriptive qualitative research that is trying to generate data in the form of systematic and accurate picture of the object of study. The sustaiprophetlity  of Al Markas AL Islamic mosque can be known through the concept of Islam  in accordance with the view of Islam as well as the sustaiprophetlity of the buildings that seen in the spatial pattern of the mosque, appearance, natural lighting, natural ventilation, and user behavior of the mosque. Keywords: mosque architecture, sustaiprophetlity, view of Islam     Abstrak Arsitektur masjid merupakan bagian dari arsitektur Islam. Bangunan masjid sebaiknya dapat menyatu dengan unsur alam karena masjid difungsikan sebagai wadah dalam bersujud/sembahyang  kepada Allah SWT yang menciptakan alam semesta ini. Masjid Al Markas Al Islamic Makassar merupakan kompleks kegiatan Islam yang digunakan sebagai pusat aspirasi masyarakat  dan pemerintahan  yang dapat menampung

  12. Ultrasonic spot welding of Al/Mg/Al tri-layered clad sheets

    International Nuclear Information System (INIS)

    Macwan, A.; Patel, V.K.; Jiang, X.Q.; Li, C.; Bhole, S.D.; Chen, D.L.

    2014-01-01

    Highlights: • The optimal welding condition is achieved at 100 J and 0.1 s. • Failure load first increases and then decreases with increasing welding energy. • The highest failure load after welding is close to that of the clad sheets. • At low energy levels failure occurs in the mode of interfacial failure. • At high energy levels failure takes place at the edge of nugget region. - Abstract: Solid-state ultrasonic spot welding (USW) was used to join Al/Mg/Al tri-layered clad sheets, aiming at exploring weldability and identifying failure mode in relation to the welding energy. It was observed that the application of a low welding energy of 100 J was able to achieve the optimal welding condition during USW at a very short welding time of 0.1 s for the tri-layered clad sheets. The optimal lap shear failure load obtained was equivalent to that of the as-received Al/Mg/Al tri-layered clad sheets. With increasing welding energy, the lap shear failure load initially increased and then decreased after reaching a maximum value. At a welding energy of 25 J, failure occurred in the mode of interfacial failure along the center Al/Al weld interface due to insufficient bonding. At a welding energy of 50 J, 75 J and 100 J, failure was also characterized by the interfacial failure mode, but it occurred along the Al/Mg clad interface rather than the center Al/Al weld interface, suggesting stronger bonding of the Al/Al weld interface than that of the Al/Mg clad interface. The overall weld strength of the Al/Mg/Al tri-layered clad sheets was thus governed by the Al/Mg clad interface strength. At a welding energy of 125 J and 150 J, thinning of weld nugget and extensive deformation at the edge of welding tip caused failure at the edge of nugget region, leading to a lower lap shear failure load

  13. Core electron binding energy shifts of AlBr3 and Al2Br6 vapor

    International Nuclear Information System (INIS)

    Mueller, Astrid M.; Plenge, Juergen; Leone, Stephen R.; Canton, Sophie E.; Rude, Bruce S.; Bozek, John D.

    2006-01-01

    The Al 2p and Br 3d inner-shell photoelectron spectra of aluminum tribromide monomer and dimer vapor were measured at 90 and 95 eV photon energy, respectively, to determine the core electron binding energies of the atoms in the two molecular species. While AlBr 3 has three identical Br atoms, Al 2 Br 6 exhibits four terminal and two bridging Br atoms. The species are identified by their distinct valence photoelectron spectra. Comparison of the observed Al 2p 1/2 and Al 2p 3/2 electron binding energies of AlBr 3 with those of Al 2 Br 6 shows that there is a chemical shift of (0.15 ± 0.03) eV to lower energy in the dimer. In Al 2 Br 6 , an assignment is proposed in which the Br 3d 3/2 and Br 3d 5/2 binding energies of terminal Br atoms are (1.18 ± 0.03) eV lower than those of bridging Br atoms. This assignment assumes that both types of Br atoms have similar cross-sections for ionization. With this result, the Br 3d 3/2 and Br 3d 5/2 binding energies of Br atoms in AlBr 3 are (0.81 ± 0.03) eV lower than those of bridging Br atoms of the dimer but (0.37 ± 0.03) eV higher than those of terminal Br atoms of the dimer. The obtained chemical shifts are considered in terms of the binding relations and electron density distributions in both molecules. Chemical shifts that are larger than a few hundred millielectron volts, as observed in the Al 2 Br 6 /AlBr 3 system, offer potential to study the dissociation dynamics of the dimer in a femtosecond visible or ultraviolet-pump/XUV-probe experiment

  14. Solute trapping of Ge in Al

    International Nuclear Information System (INIS)

    Smith, P.M.; West, J.A.; Aziz, M.J.

    1992-01-01

    This paper reports on partitioning during rapid solidification of dilute Al-Ge alloys. Implanted thin films of Al have been pulsed-laser melted to obtain solidification at velocities in the range of 0.01 ms to 3.3 m/s, as measured by the transient conductance technique. Previous and subsequent Rutherford Backscattering depth profiling of the Ge solute in the Al alloys has been used to determine the nonequilibrium partition coefficient k. A significant degree of lateral film growth during solidification confines determination of k to the placing of an upper bound of 0.22 on k for solidification velocities in this range. The authors place a lower limit of 10 m/s on the diffusive velocity, which locates the transition from solute partitioning to solute trapping in the Continuous Growth Model

  15. Al- Khwarizmi and axiomatic foundation of algebra

    International Nuclear Information System (INIS)

    Fares, N.

    2015-01-01

    This paper intends to investigate the axiomatic foundations of algebra, as they were presented in the book of algebra of al-Khwarizmi (9 th century), and as they were developed in many subsequent Arabic works. The paper gives also a description of algebra evolution towards a discipline independent ofgeometry and arithmetic: the two disciplines whosemarriage had led to its birth.By an in depth reading of some details in the text of al Khwarizmi , we concluded that this mathematician intended to lay down the axiomatic foundations of that new discipline. His resort to arithmetical and geometrical means was a way of making his theory more accessible. He used them to justify the axioms: those that were not explicitly introduced per se, and those that were remained implicit. The paper also relies on some unedited writingsof al-Khwarizmi's successors, which could shedlight on the ways they used to consolidate the foundations of algebra and improve its methods. (author)

  16. Superbends expand the scope of Berkeley's ALS

    International Nuclear Information System (INIS)

    Robin, David S.; Robinson, Arthur L.; Tamura, Lori S.

    2002-01-01

    While the ALS has turned out to be a world-leader in providing beams of soft X-rays -- indeed, furnishing these beams remains its core mission -- there has nonetheless been a steadily growing demand from synchrotron radiation users for harder X-rays with higher photon energies. The clamor has been strongest from protein crystallographers whose seemingly insatiable appetite for solving structures of biological macromolecules could not be satisfied by the number of crystallography beamlines available worldwide. But how to provide these X-rays in a cost-effective way without disrupting the thriving research programs of the existing ALS users was the problem. Superconducting bend magnets (superbends) provided the answer for the ALS, which adopted a proposal to replace some of the normal combined-function (gradient) magnets in the curved arcs of the storage ring with superconducting dipoles that could generate higher magnetic fields and thus synchrotron light with a higher critical energy

  17. Evaluation of Functional Disability in ALS

    Directory of Open Access Journals (Sweden)

    Akbar Soltan-Zadeh

    2002-06-01

    Full Text Available Objective: Amyotrophic Lateral Sclerosis (ALS is a progressive degenerative fatal disorder of motor neuron. In this research course of functional disability and possible underlying factors affecting disability were studied. Materials & Methods: First 59 patients with definite ALS were selected and for each patient ALSFRS (ALS Functional Rating Scale was determined at Initial and the end of a six month period. Results: During this period 9 patients expired. Bulbar onset localization showed a more rapid course than non-bulbar onset group. Conclusion: There was no significant relationship between the age group or gender with progression of disability. In expired group, mean survival in bulbar onset and older patients were significantly less than those with non-bulbar onset and younger ones. There was no significant relationship between survival and gender.

  18. Grain refinement of Al wrought alloys with newly developed AlTiC master alloys; Kornfeinung von Al-Knetlegierungen mit neu entwickelten AlTiC-Vorlegierungen

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, W. [Vereinigte Aluminium-Werke AG, Bonn (Germany). Forschung und Entwicklung

    2000-10-01

    AlTiC master alloys are a new grain refiner type to produce an equiaxed grain structure of cast extrusion and rolling ingots. These master alloys contain Ti carbides which act as nucleants of the {alpha} solid solution during solidification. The TiC content is lower than the TiB{sub 2} content of the industrial proved AlTiB master alloys. Benefits of the AlTiC master alloys are the low agglomeration tendency of the Ti carbides in the melt and that no Zr poisoning takes place. Despite of the low Ti carbide content the grain refinement performance can be very efficient, if low melt temperatures during casting will be used and as result of this a sufficient constitutional supercooling at the solidification front is achieved. (orig.)

  19. Autologous Stem Cell Transplant for AL Amyloidosis

    Directory of Open Access Journals (Sweden)

    Vivek Roy

    2012-01-01

    Full Text Available AL amyloidosis is caused by clonal plasma cells that produce immunoglobulin light chains which misfold and get deposited as amyloid fibrils. Therapy directed against the plasma cell clone leads to clinical benefit. Melphalan and corticosteroids have been the mainstay of treatment for a number of years and the recent availability of other effective agents (IMiDs and proteasome inhibitors has increased treatment options. Autologous stem cell transplant (ASCT has been used in the treatment of AL amyloidosis for many years. It is associated with high rates of hematologic response and improvement in organ function. However, transplant carries considerable risks. Careful patient selection is important to minimize transplant related morbidity and mortality and ensure optimal patient outcomes. As newer more affective therapies become available the role and timing of ASCT in the overall treatment strategy of AL amyloidosis will need to be continually reassessed.

  20. [Al-Biruni--a universal scientist].

    Science.gov (United States)

    Kujundzić, E; Masić, I

    1999-01-01

    Al-Biruni's was of Persian descent. He was born in Horesmiya and had studied mathematics, history and medicine. Acquiring knowledge from these sciences, he wrote an outstanding work on chronology of several nations and devoted it to Ziyarit ruler Kabus. He made a chronological overview of calendars from many nations, including Persians, Greeks, Egyptians, Jews, Melkitian and Nestorian Christians, Sabeyaans as well as the old Arabs. Data presented in the work, according to the later authors, were taken from very reliable sources. He was contemporary of Ibn-Sina, and thanks to their friendship, they have discussed very much miscellaneous topics. He belonged to the group of scholars, taken by Gaznevian Soultan Mahmud to a long journey to India. Afterwards Al-Biruni wrote and published detailed work "Description of India"--a work on cultural history of India. Due to excellent abilities of Al-Biruni as a philosopher and scholar, there are still significant and reliable notes about buddhistic philosophy, structure of castes and Brahmans' life style. In this Al-Biruni's masterpiece, there are many comparative analysis of Suffism and certain Indian philosophical methods. Al-Biruni's most important work is "Pharmacopoeia"--"Kitab al-saydala", which brilliantly describes all medicaments. This work has been published in many languages. He also wrote few works on astronomy and astrology. In those works he has explained some astrological events through scientific approach in a such peculiar way that nobody has ever explained before. He was also interested in sciences like geology, mineralology, geography, mathematics, psychology and many others.

  1. Instability of TiC and TiAl3 compounds in Al-10Mg and Al-5Cu alloys by addition of Al-Ti-C master alloy

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The performance of Al-Ti-C master alloy in refining Al-10Mg and A1-5Cu alloys was studied by using electron probe micro-analyzer (EPMA) and X-ray diffractometer (XRD) analysis.The results indicate that there are obvious fading phenomena in both Al-10Mg and Al-5Cu alloys with the addition of Al-5Ti-0.4C refiner which contains TiC and TiAl3 compounds.Mg element has no influence on the stability of TiC and TiAl3, while TiC particles in Al-10Mg alloy react with Al to form Al4C3 particles, resulting in the refinement fading.However, TiC particles are relatively stable in Al-5Cu alloy, while TiAl3 phase reacts with Al2Cu to produce a new phase Ti(Al, Cu)2, which is responsible for the refinement fading in Al-5Cu alloy.These indicate that the refinement fading will not occur only when both the TiC particles and TiAl3 compound of Al-Ti-C refiner are stable in Al alloys.

  2. Magnetic Properties of NdAl2

    DEFF Research Database (Denmark)

    Bak, P.

    1974-01-01

    The magnetic properties of NdAl2 are calculated using a Hamiltonian including crystal-field and isotropic exchange interaction terms. A two-dimensional mean-field theory is evaluated to calculate single-crystal magnetization curves. It is shown that the magnetic properties can be understood using...... the crystal-field parameters derived from the magnetic exciton spectrum measured by Houmann et al. by means of inelastic neutron scattering. The combined lambda -Schottky anomaly in the heat capacity is explained. No additional parameters are introduced....

  3. PERFILES PROFESIONALES Y VALORES RELATIVOS AL TRABAJO

    OpenAIRE

    Moreno, José Eduardo; Marcaccio, Antonela

    2014-01-01

    El objetivo del presente trabajo es evaluar la relación existente entre los valores relativos al trabajo y algunos perfiles profesionales (contabilidad y administración, marketing y ventas, y recepción). El instrumento utilizado es la Escala Argentina de Valores Relativos al Trabajo (Moreno & Marcaccio, 2012) que contiene cuatro subescalas de cinco ítems cada una, a saber: Realización Personal, Reconocimiento Social, Altruismo y Aspiraciones Económicas. La muestra incluye a 425 sujetos (40% v...

  4. Trastornos temporomandibulares en adictos al qat

    OpenAIRE

    Orlando Guerra Cobián; Raúl J Pupo Triguero; Humberto Sarracent Pérez; Kirenia M Rabilero Salgado

    2012-01-01

    Introducción: los trastornos temporomandibulares se asocian frecuentemente al hábito de masticar qat, pero se carece de estudios que detallan sus particularidades, por lo que se realiza este trabajo, con los objetivos de determinar la prevalencia de trastornos temporomandibulares en pacientes adictos al qat, identificar los hallazgos clínicos- radiográficos asociados y clasificar los trastornos temporomandibulares presentes en la población estudiada. Métodos: se realizó un estudio prospectivo...

  5. Complementary and Alternative Therapies in ALS

    Science.gov (United States)

    Bedlack, Richard S.; Joyce, Nanette; Carter, Gregory T.; Pagononi, Sabrina; Karam, Chafic

    2015-01-01

    Synopsis Given the severity of their illness and lack of effective disease modifying agents, it is not surprising that most patients with ALS consider trying complementary and alternative therapies. Some of the most commonly considered alternative therapies include special diets, nutritional supplements, cannabis, acupuncture, chelation and energy healing. This chapter reviews these in detail. We also describe 3 models by which physicians may frame discussions about alternative therapies: paternalism, autonomy and shared decision making. Finally, we review a program called ALSUntangled which using shared shared decision making to review alternative therapies for ALS. PMID:26515629

  6. Surface study and thickness control of thin Al2O3 film on Cu-9%Al(111) single crystal

    International Nuclear Information System (INIS)

    Yamauchi, Yasuhiro; Yoshitake, Michiko; Song Weijie

    2004-01-01

    We were successful in growing a uniform flat Al 2 O 3 film on the Cu-9%Al(111) surface using the improved cleaning process, low ion energy and short time sputtering. The growth of ultra-thin film of Al 2 O 3 on Cu-9%Al was investigated using Auger electron spectroscopy (AES) and a scanning electron microscope (SEM). The Al 2 O 3 film whose maximum thickness was about 4.0 nm grew uniformly on the Cu-9%Al surface. The Al and O KLL Auger peaks of Al 2 O 3 film shifted toward low kinetic energy, and the shifts were related to Schottky barrier formation and band bending at the Al 2 O 3 /Cu-9%Al interface. The thickness of Al 2 O 3 film on the Cu-9%Al surface was controlled by the oxygen exposure

  7. Isothermal cross-sections of Sr-Al-Ge and Ba-Al-Ge systems at 673 K

    International Nuclear Information System (INIS)

    Kutsenok, N.L.; Yanson, T.I.

    1987-01-01

    X-ray and microstructural analyses are used to study phase equilibria in Sr-Al-Ge and Ba-Al-Ge systems. Existence of SrAl 2 Ge 2 , Sr(Al, Ge) 2 Ba(Al, Ge) 2 , Sr 3 Al 2 Ge 2 , Ba 3 Al 2 Ge 2 ternary compounds is confirmed, a new BaGe 4 binary compound and also new ternary compounds of approximate composition Sr 57 Al 30 Ge 13 and Ba 20 Al 40 Ge 40 , which crystal structure is unknown, are detected. Aluminium solubility in SrAl 4 and BaAl 4 binary compounds (0.05 atomic fraction) is determined. Ba(Al, Ge) 2 compound homogeneity region is defined more exactly (aluminium content varies from 0.27 to 0.51 at. fractions)

  8. A study on preparation and hydriding of β-Mg2Al3 and γ-Mg17Al12

    International Nuclear Information System (INIS)

    Hadi Suwarno

    2009-01-01

    The mechanism of the synthetic formation of β-Mg 2 Al 3 and γ-Mg 17 Al 12 has been studied. Mechanical alloying of Mg and Al powders with the atomic ratio of Mg:Al = 2:3 in toluene solution yields β-Mg 2 Al 3 compound after milling for 30 h. The γ-Mg 17 Al 12 can be formed by heating the β-Mg 2 Al 3 at 430°C under high vacuum. The measured hydrogen capacities of β-Mg 2 Al 3 and γ-Mg 17 Al 12 as hydride at 300°C are 3.2 and 4.9 wt%, respectively. Microstructure of the Mg-Al specimen shows that on hydriding at 300°C the polygonal shape of the γ-Mg 17 Al 12 changes into irregular shapes which are composed of γ-MgH 2 and Al. (author)

  9. Computer aided cooling curve analysis for Al-5Si and Al-11Si alloys

    African Journals Online (AJOL)

    user

    fine fibrous form (Hess and Blackmun, 1975; Dahle et al., 2005). ..... grain structure in the casting (Apelian et al., 1984), which in turn are supported in the present work by a decreased ..... Liao H., Zhang M., Wu Q., Wang H. and Sun G., 2007.

  10. Preparation, deformation, and failure of functional Al-Sn and Al-Sn-Pb nanocrystalline alloys

    Science.gov (United States)

    Noskova, N. I.; Vil'Danova, N. F.; Filippov, Yu. I.; Churbaev, R. V.; Pereturina, I. A.; Korshunov, L. G.; Korznikov, A. V.

    2006-12-01

    Changes in the structure, hardness, mechanical properties, and friction coefficient of Al-30% Sn, Al-15% Sn-25% Pb, and Al-5% Sn-35% Pb (wt %) alloys subjected to severe plastic deformation by equal-channel angular pressing (with a force of 40 tonne) and by shear at a pressure of 5 GPa have been studied. The transition into the nanocrystalline state was shown to occur at different degrees of plastic deformation. The hardness exhibits nonmonotonic variations, namely, first it increases and subsequently decreases. The friction coefficient of the Al-30% Sn, Al-15% Sn-25% Pb, and Al-5% Sn-35% Pb alloys quenched from the melt was found to be 0.33; the friction coefficients of these alloys in the submicrocrystalline state (after equal-channel angular pressing) equal 0.24, 0.32, and 0.35, respectively. The effect of disintegration into nano-sized powders was found to occur in the Al-15% Sn-25% Pb, and Al-5% Sn-35% Pb alloys after severe plastic deformation to ɛ = 6.4 and subsequent short-time holding.

  11. Sintering Behavior of CNT Reinforced Al6061 and Al2124 Nanocomposites

    Directory of Open Access Journals (Sweden)

    Nouari Saheb

    2014-01-01

    Full Text Available Ball milling and spark plasma sintering were successfully used to produce carbon nanotube reinforced Al6061 and Al2124 nanocomposites which have potential applications in the fields of aerospace, automotive, electronics, and high precision instrumentation. Al2124 and Al6061 nanocomposite powders containing 0.5 to 2 wt.% CNTs prepared through sonication and wet ball milling were spark plasma sintered at 400, 450, and 500°C for 20 minutes under a pressure of 35 MPa. CNTs were better dispersed, and less agglomerated and had good adhesion to the matrix in composites containing 1 wt.% CNTs. The increase of CNT content to 2 wt.% led to the formation of CNT clusters which resulted in less uniform and homogenous composite powders. Almost full densification of Al6061 reinforced with CNTs was achieved at 500°C. Also, CNTs reinforced Al2124 nanocomposites reached very high densities at 500°C. Composites reinforced with 1 wt.% CNTs displayed better densification compared to composites containing 2 wt.% CNTs. The increase of CNTs content from 0.5 to 1 wt.% increased the hardness of the Al6061 and Al2124 alloys to maximum values. Further increase of CNTs content to 2 wt.% decreased the hardness to values lower than that of the monolithic alloys.

  12. Al-muammar et al., Afr J Tradit Complement Altern Med. (2016) 13(1 ...

    African Journals Online (AJOL)

    PROF ADEWUNMI

    Al-muammar et al., Afr J Tradit Complement Altern Med. (2016) 13(1):17- .... Feed and water were provided ad libitum for one week before the start of experiment for adaptation. The basal .... The mean value of feed intake (g/day/rat) for all treated groups was slightly reduced as compared to the negative control group. On the.

  13. Mechanical properties and deformation behavior of Al/Al7075, two-phase material

    International Nuclear Information System (INIS)

    Sherafat, Z.; Paydar, M.H.; Ebrahimi, R.; Sohrabi, S.

    2010-01-01

    In the present study, mechanical properties and deformation behavior of Al/Al7075, two-phase material were investigated. The two-phase materials were fabricated by mixing commercially pure Al powder with Al7075 chips and consolidating the mixture through hot extrusion process at 500 o C. Mechanical properties and deformation behavior of the fabricated samples were evaluated using tensile and compression tests. A scanning electron microscope was used to study the fracture surface of the samples including different amount of Al powder, after they were fractured in tensile test. The results of the tensile and compression tests showed that with decreasing the amount of Al powder, the strength increases and ductility decreases. Calculation of work hardening exponent (n) indicated that deformation behavior does not follow a regular trend. In a way that the n value was approved to be variable and a strong function of strain and Al powder wt% of the sample. The results of the fractography studies indicate that the type of fracture happened changes from completely ductile to nearly brittle by decreasing the wt% of Al powder from 90% to 40%.

  14. Surface modified Al2O3 in fluorinated polyimide/Al2O3 ...

    Indian Academy of Sciences (India)

    guest group into a host structure without a major struc- tural modification of the ... on nano-structure size (Li et al 2009). Among ... naocomposite by the decrease of interfacial areas between ... pling agent which usually has a long alkyl tail shows a good ... the mechanical and thermal properties of polymers (Li et al. 2010).

  15. The ALS-FTD-Q: A new screening tool for behavioral disturbances in ALS

    NARCIS (Netherlands)

    Raaphorst, J.; Beeldman, E.; Schmand, B.; Berkhout, J.; Linssen, W.H.J.P.; Van den Berg, L.H.; Pijnenburg, Y.A.L.; Grupstra, H.F.; Weikamp, J.G.; Schelhaas, H.J.; Papma, J.M.; van Swieten, J.C.; de Visser, M.; de Haan, R.J.

    2012-01-01

    Objective: The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We

  16. The ALS-FTD-Q: a new screening tool for behavioural disturbances in ALS

    NARCIS (Netherlands)

    Raaphorst, J.; Beeldman, E.; Schmand, B.; Berkhout, J.; Linssen, W.H.J.P.; van den Berg, L.H.; Pijnenburg, Y.A.; Grupstra, H.F.; Weikamp, J.G.; Schelhaas, H.J.; Papma, J.M.; van Swieten, J.C.; de Visser, M.; de Haan, R.J.

    2012-01-01

    Objective: The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We

  17. The ALS-FTD-Q A new screening tool for behavioral disturbances in ALS

    NARCIS (Netherlands)

    Raaphorst, Joost; Beeldman, Emma; Schmand, Ben; Berkhout, Joris; Linssen, Wim H. J. P.; van den Berg, Leonard H.; Pijnenburg, Yolande A.; Grupstra, Hepke F.; Weikamp, Janneke G.; Schelhaas, H. Jurgen; Papma, Janne M.; van Swieten, John C.; de Visser, Marianne; de Haan, Rob J.

    2012-01-01

    Objective: The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We

  18. The ALS-FTD-Q: a new screening tool for behavioral disturbances in ALS

    NARCIS (Netherlands)

    Raaphorst, J.; Beeldman, E.; Schmand, B.A.; Berkhout, J.; Linssen, W.H.J.P.; Berg, L.H. van den; Pijnenburg, Y.A.; Grupstra, H.F.; Weikamp, J.G.; Schelhaas, H.J.; Papma, J.M.; van Swieten, J.C.; Visser, M. de; Haan, R.J. de

    2012-01-01

    OBJECTIVE: The assessment of behavioral disturbances in amyotrophic lateral sclerosis (ALS) is important because of the overlap with the behavioral variant of frontotemporal dementia (ALS-bvFTD). Motor symptoms and dysarthria are not taken into account in currently used behavioral questionnaires. We

  19. InAlGaAs/AlGaAs quantum wells: line widths, transition energies and segregation

    DEFF Research Database (Denmark)

    Jensen, Jacob Riis; Hvam, Jørn Märcher; Langbein, Wolfgang

    2000-01-01

    We investigate the optical properties of InAlCaAs/AlGaAs quantum wells pseudomorphically grown on GaAs using molecular beam epitaxy (MBE). The transition energies, measured with photoluminescence (PL), are modelled solving the Schrodinger equation, and taking into account segregation in the group...

  20. Direct observations of grain boundary phenomena during indentation of Al and Al-Mg thin films

    NARCIS (Netherlands)

    Soer, WA; De Hosson, JTM; Minor, AM; Stach, EA; Morris, Joan K.; Corcoran, SG; Joo, YC; Moody, NR; Suo, Z

    2004-01-01

    The deformation behaviour of Al and Al-Mg thin films has been studied with the unique experimental approach of in-situ nanoindentation in a transmission electron microscope. This paper concentrates on the role of solute Mg additions in the transfer of plasticity across grain boundaries. The

  1. Burden of rare variants in ALS genes influences survival in familial and sporadic ALS.

    Science.gov (United States)

    Pang, Shirley Yin-Yu; Hsu, Jacob Shujui; Teo, Kay-Cheong; Li, Yan; Kung, Michelle H W; Cheah, Kathryn S E; Chan, Danny; Cheung, Kenneth M C; Li, Miaoxin; Sham, Pak-Chung; Ho, Shu-Leong

    2017-10-01

    Genetic variants are implicated in the development of amyotrophic lateral sclerosis (ALS), but it is unclear whether the burden of rare variants in ALS genes has an effect on survival. We performed whole genome sequencing on 8 familial ALS (FALS) patients with superoxide dismutase 1 (SOD1) mutation and whole exome sequencing on 46 sporadic ALS (SALS) patients living in Hong Kong and found that 67% had at least 1 rare variant in the exons of 40 ALS genes; 22% had 2 or more. Patients with 2 or more rare variants had lower probability of survival than patients with 0 or 1 variant (p = 0.001). After adjusting for other factors, each additional rare variant increased the risk of respiratory failure or death by 60% (p = 0.0098). The presence of the rare variant was associated with the risk of ALS (Odds ratio 1.91, 95% confidence interval 1.03-3.61, p = 0.03), and ALS patients had higher rare variant burden than controls (MB, p = 0.004). Our findings support an oligogenic basis with the burden of rare variants affecting the development and survival of ALS. Copyright © 2017 The Author(s). Published by Elsevier Inc. All rights reserved.

  2. First-principles study of L10 Ti-Al and V-Al alloys

    International Nuclear Information System (INIS)

    Chubb, S.R.; Papaconstantopoulos, D.A.; Klein, B.M.

    1988-01-01

    As a first step towards understanding the reduced embrittlement of L1 0 Ti-Al alloys which accompanies the introduction of small concentrations of V, we have determined from first principles, using full-potential linearized--augmented-plane-wave calculations, the equilibrium values of the structural parameters and the associated electronic structure for the stoichiometric (L1 0 ) Ti-Al (tetragonal) compound. Our calculated values of c/a and a are in good agreement with experiment. Using the same method of calculation, we have also studied the electronic structure associated with the (hypothetical) L1 0 V-Al alloy that would form when V is substituted for Ti. We find that (1) the electronic structures of these V-Al alloys are relatively insensitive to variations of c/a and a; (2) near the Ti-Al equilibrium geometry, the electronic structures of the V-Al and Ti-Al alloys are very similar; and (3) that a rigid-band model involving substitution of V for Ti can be used to gain a qualitative understanding of the reduction in c/a which accompanies the introduction of small concentrations of V. We relate the reduction in c/a to important changes in the bonding that accompany the occupation of bands immediately above the Fermi level of the stoichiometric Ti-Al compound

  3. NEK1 genetic variability in a Belgian cohort of ALS and ALS-FTD patients.

    Science.gov (United States)

    Nguyen, Hung Phuoc; Van Mossevelde, Sara; Dillen, Lubina; De Bleecker, Jan L; Moisse, Matthieu; Van Damme, Philip; Van Broeckhoven, Christine; van der Zee, Julie

    2018-01-01

    We evaluated the genetic impact of the amyotrophic lateral sclerosis (ALS) risk gene never in mitosis gene a-related kinase 1 (NEK1) in a Belgian cohort of 278 patients with ALS (n = 245) or ALS with frontotemporal dementia (ALS-FTD, n = 33) and 609 control individuals. We identified 2 ALS patients carrying a loss-of-function (LOF) mutation, p.Leu854Tyrfs*2 and p.Tyr871Valfs*17, that was absent in the control group. A third LOF variant p.Ser1036* was present in 2 sibs with familial ALS but also in an unrelated control person. Missense variants were common in both patients (3.6%) and controls (3.0%). The missense variant, p.Arg261His, which was previously associated with ALS risk, was detected with a minor allele frequency of 0.90% in patients compared to 0.33% in controls. Taken together, NEK1 LOF variants accounted for 1.1% of patients, although interpretation of pathogenicity and penetrance is complicated by the observation of occasional LOF variants in unaffected individuals (0.16%). Furthermore, enrichment of additional ALS gene mutations was observed in NEK1 carriers, suggestive of a "second hit" model were NEK1 variants may modify disease presentation of driving mutations. Copyright © 2017 The Author(s). Published by Elsevier Inc. All rights reserved.

  4. The Genyornis Egg: Response to Miller et al.'s commentary on Grellet-Tinner et al., 2016

    Science.gov (United States)

    Grellet-Tinner, Gerald; Spooner, Nigel A.; Handley, Warren D.; Worthy, Trevor H.

    2017-04-01

    Williams (1981) and Williams and Rich (1991) attributed Australian Quaternary fossil eggshell that differed from that of emu Dromaius novaehollandiae to the extinct bird Genyornis newtoni without any osteological or embryonic support. Such association by proximity or abundance mirrors the case of the mistaken association of oviraptor eggs to Protoceratops in the 1920's by Andrews (Grellet-Tinner and Makovicky, 2006). No other candidate species was considered, and this attribution has been unchallenged and followed by everyone thereafter. Much research has been done on this Australian eggshell, with one result being that the extinction of the parent of this eggshell is the most well documented for a taxon in Australia (e.g., Miller et al., 1999, 2005). Grellet-Tinner et al. (2016) raised several problems with the identity of the eggshell Williams (1981) attributed to Genyornis newtoni and suggested that extinct megapodes of the genus Progura were the more likely layer of this eggshell type, therein referred to as ;putative Genyornis oological material; (PGOM). Miller et al. (2017) challenged our hypothesis stating that ;Based on the dimensions of the reconstructed Spooner Egg,Grellet-Tinner et al. (2016)argue that PGOM is too small for a bird with the body mass estimated for Genyornis (168-275 kg) … …[and] …. None of the additional PGOM observations reported byGrellet-Tinner et al. (2016)are inconsistent with a Genyornis parent;. Here we take the opportunity to respond to their critique, the basis of which resolves into a few points, which we address in turn.

  5. Fluctuations of charge variance and interaction time for dissipative processes in 27 Al + 27 Al collision

    International Nuclear Information System (INIS)

    Berceanu, I.; Andronic, A.; Duma, M.

    1999-01-01

    The systematic studies of dissipative processes in light systems were completed with experiments dedicated to the measurement of the excitation functions in 19 F + 27 Al and 27 Al + 27 Al systems in order to obtain deeper insight on DNS configuration and its time evolution. The excitation function for 19 F + 27 Al system evidenced fluctuations larger than the statistical errors. Large Z and angular cross correlation coefficients supported their non-statistical nature. The energy dependence of second order observables, namely the second moment of the charge distribution and the product ω·τ (ω - the angular velocity of the DNS and τ its mean lifetime) extracted from the angular distributions were studied for 19 F + 27 Al case. In this contribution we are reporting the preliminary results of similar studies performed for 27 Al + 27 Al case. The variance of the charge distribution were obtained fitting the experimental charge distribution with a Gaussian centered on Z = 13 and the product ω·τ was extracted from the angular distributions. The results for 19 F + 27 Al case are confirmed by a preliminary analysis of the data for 27 Al + 27 Al system. The charge variance and ω·τ excitation functions for Z = 11 fragment are represented together with the excitation function of the cross section. One has to mention that the data for 27 Al + 27 Al system were not corrected for particle evaporation processes. The effect of the evaporation corrections on the excitation function was studied using a Monte Carlo simulation. The α particle evaporation was also included and the evaluation of the particle separation energies was made using experimental masses of the fragments. The excitation functions for 27 Al + 27 Al system for primary and secondary fragments were simulated. No structure due to particle evaporation was observed. The correlated fluctuations in σ Z and ω·τ excitation functions support a stochastic exchange of nucleons as the main mechanism for

  6. 26Mg(p,n)26Al and 23Na(α,n)26Al reactions

    International Nuclear Information System (INIS)

    Skelton, R.T.

    1985-01-01

    Cross sections for the 26 Mg(p,n) 26 Al reaction were measured from threshold at 4.988 MeV to 5.820 MeV. Cross sections for the 23 Na(α,n) 26 Al reaction were measured from threshold at 3.483 MeV to 4.597 MeV. In each case, separate measurements were to the ground state and to the first and second excited states of 26 Al. Cross sections for the inverse reactions were calculated and reaction rate factors relating to the destruction of 26 Al in a supernova environment were determined. Astrophysical implications relating to the observation of live and extinct 26 Al are discussed. Excitation functions for several additional exit channels for the 26 Mg + rho and 23 Na + α reactions are reported

  7. Grain refinement of 7075Al alloy microstructures by inoculation with Al-Ti-B master alloy

    Science.gov (United States)

    Hotea, V.; Juhasz, J.; Cadar, F.

    2017-05-01

    This paper aims to bring some clarification on grain refinement and modification of high strength alloys used in aerospace technique. In this work it was taken into account 7075 Al alloy, and the melt treatment was carried out by placing in the form of master alloy wire ternary AlTiB the casting trough at 730°C. The morphology of the resulting microstructures was characterized by optical microscopy. Micrographs unfinished and finished with pre-alloy containing ternary Al5Ti1B evidence fine crystals, crystal containing no columnar structure and highlights the size of the dendrites, and intermetallic phases occurring at grain boundaries in Al-Zn-Mg-Cu alloy. It has been found that these intermetallic compounds are MgZn2 type. AlTiB master alloys finishing ensures a fine eutectic structure, which determines the properties of hardware and improving the mechanical properties of aluminum alloys used in aeronautical engineering.

  8. Al2O3 adherence on CoCrAl alloys

    International Nuclear Information System (INIS)

    Kingsley, L.M.

    1980-04-01

    Adherence of protective oxides on NiCrAl and CoCrAl superalloys has been promoted by a dispersion of a highly oxygen reactive element or its oxide being produced within the protection system. Two aspects of this subject are investigated here: the use of Al 2 O 3 as both the dispersion and protective oxide; and the production of an HfO 2 dispersion while simultaneously aluminizing the alloy. It was found that an Al 2 O 3 dispersion will act to promote the adherence of an external scale of Al 2 O 3 to a degree comparable to previously tested dispersions and an HfO 2 dispersion comparable to that produced by a Rhines pack treatment is produced during aluminization

  9. Production of 26Al by spallation of Fe, Si, Al nuclei

    International Nuclear Information System (INIS)

    Paillard, P.

    1977-01-01

    Cross sections for 7 Be, 10 Be and 26 Al formation in Al, Si and Fe targets bombarded with 0.6 and 24GeV protons have been measured by using highly selective chemical separation and low level background counters. Results for 26 Al at 0.6GeV are in mb: 17.9 + or - 2.7 in Al, 12.5 + or - 2.5 in Si and 0.45 + or - 0.14 in Fe; at 24GeV 2.6 + or - 0.5mb in Fe. Results for 10 Be are not valid on account of experimental difficulties. It is deduced from these values of aluminium in cosmic ray propagation that 26 Al is not yet cosmic ray chronometer [fr

  10. Different magnetic behaviour of the Kondo compounds Al3Ce and Al11Ce3

    International Nuclear Information System (INIS)

    Benoit, A.; Flouquet, J.; Palleau, J.; Buevoz, J.L.

    1979-08-01

    Neutron diffraction experiments on the Al 3 Ce and Al 11 Ce 3 compounds have been performed on the multidetector of the I.L.L. high flux reactor. No magnetic structure has been detected on the Al 3 Ce compound down to 20 mK. This confirms the non magnetic ground state of Al 3 Ce. For Al 11 Ce 3 , two magnetic structures have been observed: a ferromagnetic one at 4.2 K and an antiferromagnetic one at 2 K. The antiferromagnetic structure, which corresponds to a propagation vector (0,0,1/3), implies a strong reduction of the magnetic moment of determined sites; this reflects the Kondo character of the compounds

  11. Phase constituents and microstructure of laser cladding Al2O3/Ti3Al reinforced ceramic layer on titanium alloy

    International Nuclear Information System (INIS)

    Li Jianing; Chen Chuanzhong; Lin Zhaoqing; Squartini, Tiziano

    2011-01-01

    Research highlights: → In this study, Fe 3 Al has been chosen as cladding powder due to its excellent properties of wear resistance and high strength, etc. → Laser cladding of Fe 3 Al + TiB 2 /Al 2 O 3 pre-placed alloy powder on Ti-6Al-4V alloy substrate can form the Ti 3 Al/Fe 3 Al + TiB 2 /Al 2 O 3 ceramic layer, which can increase wear resistance of substrate. → In cladding process, Al 2 O 3 can react with TiB 2 leading to formation of Ti 3 Al and B. → This principle can be used to improve the Fe 3 Al + TiB 2 laser-cladded coating. - Abstract: Laser cladding of the Fe 3 Al + TiB 2 /Al 2 O 3 pre-placed alloy powder on Ti-6Al-4V alloy can form the Ti 3 Al/Fe 3 Al + TiB 2 /Al 2 O 3 ceramic layer, which can greatly increase wear resistance of titanium alloy. In this study, the Ti 3 Al/Fe 3 Al + TiB 2 /Al 2 O 3 ceramic layer has been researched by means of electron probe, X-ray diffraction, scanning electron microscope and micro-analyzer. In cladding process, Al 2 O 3 can react with TiB 2 leading to formation of amount of Ti 3 Al and B. This principle can be used to improve the Fe 3 Al + TiB 2 laser cladded coating, it was found that with addition of Al 2 O 3 , the microstructure performance and micro-hardness of the coating was obviously improved due to the action of the Al-Ti-B system and hard phases.

  12. The Existence of a Designer Al=Al Double Bond in the LiAl2 H4- Cluster Formed by Electronic Transmutation.

    Science.gov (United States)

    Lundell, Katie A; Zhang, Xinxing; Boldyrev, Alexander I; Bowen, Kit H

    2017-12-22

    The Al=Al double bond is elusive in chemistry. Herein we report the results obtained via combined photoelectron spectroscopy and ab initio studies of the LiAl 2 H 4 - cluster that confirm the formation of a conventional Al=Al double bond. Comprehensive searches for the most stable structures of the LiAl 2 H 4 - cluster have shown that the global minimum isomer I possesses a geometric structure which resembles that of Si 2 H 4 , demonstrating a successful example of the transmutation of Al atoms into Si atoms by electron donation. Theoretical simulations of the photoelectron spectrum discovered the coexistence of two isomers in the ion beam, including the one with the Al=Al double bond. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  13. Aproximación al efecto del programa de desayunos escolares sobre el rendimiento intelectual en alumnos de educación inicial y primaria del Perú

    Directory of Open Access Journals (Sweden)

    Carlos Rojas D

    2003-03-01

    Full Text Available Objetivos: Evaluar el efecto del Programa de Desayunos Escolares (PDE sobre el rendimiento intelectual en alumnos pertenecientes al nivel inicial y primario, atendidos por el PDE en el año 2001. Materiales y métodos: En este estudio transversal descriptivo se evaluaron mediante las pruebas cognitivas Catell 1 (4-8 años y Catell 2 (9-13 años escolares de 4 a 13 años (seleccionados por muestreo probabilístico multietápico de los distritos atendidos por el PDE, calculándose los promedios del puntaje total y puntajes de cada uno de los subtests incluidos en estas pruebas. Para identificar a los niños que recibieron la intervención, se usó dos modalidades: el testimonio del profesor de "consumo usual" del desayuno escolar y la observación del consumo el día de la evaluación. Resultados: Fueron evaluados 1787 escolares: 922 de inicial y 865 de primaria. La proporción de niñas y niños fue similar. El consumo reciente del desayuno mostró efectos positivos en el puntaje total y subtests específicos en escolares de inicial de Lima, la costa y la selva con el Catell 1 y en escolares de primaria de la costa con el Catell 2. El consumo usual mostró efectos positivos en el puntaje total y subtests específicos en escolares de inicial de la costa y la selva con el Catell 1. Conclusiones: Existen efectos positivos del consumo reciente y consumo regular de la ración del PDE sobre el rendimiento intelectual, siendo este efecto mayor en escolares del nivel inicial y en lugares de la costa y la selva.

  14. Microstructural defects modeling in the Al-Mo system

    International Nuclear Information System (INIS)

    Pascuet, Maria I.; Fernandez, Julian R.; Monti, Ana M.

    2006-01-01

    In this work we have utilized computer simulation techniques to study microstructural defects, such as point defects and interfaces, in the Al-Mo alloy. Such alloy is taken as a model to study the Al(fcc)/U-Mo(bcc) interface. The EAM interatomic potential used has been fitted to the formation energy and lattice constant of the AlMo 3 intermetallic. Formation of vacancies for both components Al and Mo and anti-sites, Al Mo and Mo Al , as well as vacancy migration was studied in this structure. We found that the lowest energy defect complex that preserves stoichiometry is the antisite pair Al Mo +Mo Al , in correspondence with other intermetallics of the same structure. Our results also suggest that the structure of the Al(fcc)/Mo(bcc) interface is unstable, while that of the Al(fcc)/Al 5 Mo interface is stable, as observed experimentally. (author) [es

  15. NMR evidence for Co-Al-Co molecular groups trapped in cages of Co4Al13

    International Nuclear Information System (INIS)

    Jeglic, P.; Heggen, M.; Feuerbacher, M.; Bauer, B.; Gille, P.; Haarmann, F.

    2009-01-01

    We present the results of 27 Al nuclear magnetic resonance (NMR) experiments on the phase Co 4 Al 13 . These results are compared to a recent structure model [1], which demonstrates a unique bonding for Al atoms in the Co-Al-Co molecular groups. In our measurement, two 27 Al signals were identified. The first one originates from Al atoms forming cages. The second signal corresponds to Al sites with exceptionally large almost axially symmetric quadrupole coupling. This finding is in perfect agreement with isolated Co-Al-Co molecular groups in accordance to Ref. [1].

  16. The constitution of alloys in the Al-rich corner of the Al-Si-Sm ternary system

    International Nuclear Information System (INIS)

    Markoli, B.; Spaic, S.; Zupanic, F.

    2001-01-01

    The constitution of alloys and the liquidus surface in the Al-rich corner of the Al-Si-Sm ternary system were determined by the examination of controlled heated and cooled specimens, as well as heat-treated specimens by means of optical and scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential thermal analysis and X-ray diffraction. The Al-rich corner of the Al-Si-Sm ternary system comprises five regions of primary crystallisation (α Al , β Si , Al 3 Sm, Al 2 Si 2 Sm and AlSiSm) with following characteristic invariant reaction sequences: ternary eutectic reaction L → α Al + β Si + Al 2 Si 2 Sm, and two liquidus transition reactions, i. e., L + Al 3 Sm → α Al + AlSiSm, and L + AlSiSm → α Al + Al 2 Si 2 Sm. Along with the position of ternary eutectic and both interstitial points in the Al-rich corner of the Al-Si-Sm ternary system, the temperatures for each reaction were determined. (orig.)

  17. The constitution of alloys in the Al-rich corner of the Al-Si-Sm ternary system

    Energy Technology Data Exchange (ETDEWEB)

    Markoli, B.; Spaic, S. [Ljubljana Univ. (Slovenia). Faculty of Natural Science and Engineering; Zupanic, F. [Maribor Univ. (Slovenia). Faculty of Mechanical Engineering

    2001-09-01

    The constitution of alloys and the liquidus surface in the Al-rich corner of the Al-Si-Sm ternary system were determined by the examination of controlled heated and cooled specimens, as well as heat-treated specimens by means of optical and scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential thermal analysis and X-ray diffraction. The Al-rich corner of the Al-Si-Sm ternary system comprises five regions of primary crystallisation ({alpha}{sub Al}, {beta}{sub Si}, Al{sub 3}Sm, Al{sub 2}Si{sub 2}Sm and AlSiSm) with following characteristic invariant reaction sequences: ternary eutectic reaction L {yields} {alpha}{sub Al} + {beta}{sub Si} + Al{sub 2}Si{sub 2}Sm, and two liquidus transition reactions, i. e., L + Al{sub 3}Sm {yields} {alpha}{sub Al} + AlSiSm, and L + AlSiSm {yields} {alpha}{sub Al} + Al{sub 2}Si{sub 2}Sm. Along with the position of ternary eutectic and both interstitial points in the Al-rich corner of the Al-Si-Sm ternary system, the temperatures for each reaction were determined. (orig.)

  18. Electronic Structures and Bonding Properties of Ti2AlC and Ti3AlC2

    Institute of Scientific and Technical Information of China (English)

    MIN Xinmin; REN Yi

    2007-01-01

    The relation among electronic structure, chemical bond and property of Ti2AlC, Ti3AlC2 and doping Si into Ti2AlC was studied by density function and the discrete variation (DFT-DVM) method. After adding Si into Ti2AlC, the interaction between Si and Ti is weaker than that between Al and Ti, and the strengths of ionic and covalent bonds decrease both. The ionic and covalent bonds in Ti3AlC2, especially in Ti-Al, are stronger than those in Ti2AlC. Therefore, in synthesis of Ti2AlC, the addition of Si enhances the Ti3AlC2 content instead of Ti2AlC. The density of state (DOS) shows that there is mixed conductor characteristic in Ti2AlC and Ti3AlC2. The DOS of Ti3AlC2 is much like that of Ti2AlC. Ti2SixAl1-x C has more obvious tendency to form a semiconductor than Ti2AlC, which is seen from the obvious difference of partial DOS between Si and Al3p.

  19. Control al doping Compromiso de Colombia

    Directory of Open Access Journals (Sweden)

    Claudia Prieto

    2015-06-01

    Full Text Available Este documento da a conocer la importante noticia de la aprobación, por parte del Comité Olímpico Internacional (COl, de un laboratorio colombiano, para el control al doping, a la vez que aprovecha la oportunidad para ampliar alguna información sobre este tema.

  20. EXPERIMENT AL AND THEORETICAL STUDY OF PRECAST ...

    African Journals Online (AJOL)

    EXPERIMENT AL AND THEORETICAL STUDY OF PRECAST BEAM-SLAB. CONSTRUCTION. Girma Zerayohannes and Adil Zekaria. Department of Civil Engineering. Addis Ababa University. ABSTRACT. The use of partially precast beam elements ivith shear connectors in slab construction relieves the requirement of ...

  1. INTERAKSI EDUKATIF MENURUT PEMIKIRAN AL-GHAZALI

    Directory of Open Access Journals (Sweden)

    Harizal Anhar

    2013-08-01

    Full Text Available Education is an interaction activity between teachers and students in a classroom learning. Harmonious interaction between teachers and students greatly affect the success of learning. But in reality, the issue of today's educational interaction is less attention of the education stakeholder. The evidence is that some educators develop bad relationship with the students as being arrogant and violent means in resolving problems in the classroom. These conditions depreciate the relation between the teacher and the students in or outside the class that it is not surprising some students attack the teachers. In fact, the problem of educational interaction is not a new problem in educational world. Al-Ghazali is an Islamic education leaders who concentrated on the issue since the 5th century H. This article aims at examining a depth theory of al-Ghazali on educational interaction in a number of work related to education. This research is library research through ccontent analysis to find its relevance to the world of Islamic education at the moment. The results show that Al-Ghazali has a major contribution in developing the concept of educational interaction in Islamic education. The concept of Al-Ghazali can be reference in overcoming the problems of educational interaction nowadays through an approach which is in line with the the latest developments.

  2. Management of respiratory symptoms in ALS.

    LENUS (Irish Health Repository)

    Hardiman, Orla

    2012-02-01

    Respiratory insufficiency is a frequent feature of ALS and is present in almost all cases at some stage of the illness. It is the commonest cause of death in ALS. FVC is used as important endpoint in many clinical trials, and in decision-making events for patients with ALS, although there are limitations to its predictive utility. There are multiple causes of respiratory muscle failure, all of which act to produce a progressive decline in pulmonary function. Diaphragmatic fatigue and weakness, coupled with respiratory muscle weakness, lead to reduced lung compliance and atelectasis. Increased secretions increase the risk of aspiration pneumonia, which further compromises respiratory function. Bulbar dysfunction can lead to nutritional deficiency, which in turn increases the fatigue of respiratory muscles. Early recognition of respiratory decline and symptomatic intervention, including non-invasive ventilation can significantly enhance both quality of life and life expectancy in ALS. Patients with respiratory failure should be advised to consider an advance directive to avoid emergency mechanical ventilation.

  3. Management of respiratory symptoms in ALS.

    LENUS (Irish Health Repository)

    Hardiman, Orla

    2011-03-01

    Respiratory insufficiency is a frequent feature of ALS and is present in almost all cases at some stage of the illness. It is the commonest cause of death in ALS. FVC is used as important endpoint in many clinical trials, and in decision-making events for patients with ALS, although there are limitations to its predictive utility. There are multiple causes of respiratory muscle failure, all of which act to produce a progressive decline in pulmonary function. Diaphragmatic fatigue and weakness, coupled with respiratory muscle weakness, lead to reduced lung compliance and atelectasis. Increased secretions increase the risk of aspiration pneumonia, which further compromises respiratory function. Bulbar dysfunction can lead to nutritional deficiency, which in turn increases the fatigue of respiratory muscles. Early recognition of respiratory decline and symptomatic intervention, including non-invasive ventilation can significantly enhance both quality of life and life expectancy in ALS. Patients with respiratory failure should be advised to consider an advance directive to avoid emergency mechanical ventilation.

  4. CALCULUL CINETOSTATIC AL MECANISMELOR PLANETARE CILINDRICE

    Directory of Open Access Journals (Sweden)

    Păun ANTONESCU

    2012-05-01

    Full Text Available În lucrare se prezintă o metodă analitică pentru calculul cinetostatic al mecanismului planetarmonomobil cu două roţi dinţate centrale. Se consideră mai întâi cazul general al schemelor cinematice cu douăroţi dinţate solidare tip satelit, în două variante practice (multiplicator şi reductor de turaţie. Este menţionatcazul particular al mecanismelor planetare cu o singură roată satelit cu angrenare dublă (exterioară şiinterioară. Pe baza modelului de analiză cinetostatică a mecanismului planetar monomobil cu două roţi dinţatecentrale, în finalul lucrării se abordează o problemă practică de calcul cinetostatic al unui mecanism planetarcilindric simplu folosit la capul de frezat pentru prelucrarea roţilor dinţate cilindrice cu dinţi curbi înhipocicloidă.

  5. Niedermolekulare Verbindungen aus Spinnen als chemische Sensoren

    DEFF Research Database (Denmark)

    Olsen, Christian Adam; Kristensen, Anders S.; Strømgaard, Kristian

    2011-01-01

    sie als Leitstrukturen für die Entwicklung, Synthese und biologische Untersuchung synthetischer Analoga verwendet. Weit weniger erforscht sind hingegen Verbindungen, die der Kommunikation von Spinnen dienen. Vor kurzem wurden jedoch auf dem Gebiet der Pheromone und Allomone aus Spinnen neue...

  6. Olawumi et al., Afr. J. Infect. Dis.

    African Journals Online (AJOL)

    AJTCAM

    2011-08-31

    Aug 31, 2011 ... Consequently pathogen reduction using riboflavin and UV light, which is a method by which infectious pathogens, including plasmodium in blood for transfusion are inactivated by adding riboflavin and irradiating with UV light , is another effort in transfusion medicine to ensure blood safety. (Hardwick et al,.

  7. Studentopinie als onderdeel van Cursuskwaliteit : Quickscan

    NARCIS (Netherlands)

    Elzinga, Hanny; Groenewoud, Jan; Ike, Paul; Loth, Betram; Reitsma, Sieuwke; Schotanus, Janke; Schuurman, Mieke; Steur, Jessica

    2015-01-01

    In het kader van dit onderzoek is een quickscan (15 vragen) opgesteld met als doel die informatie te verzamelen die nodig is om een eerste indicatie te krijgen van de kwaliteit van een cursus (vak). De quickscan is gebaseerd op literatuuronderzoek en best practices van de faculteiten van de

  8. 68 - 75 Galadanchi et al.c

    African Journals Online (AJOL)

    User

    Restricted HartreeFock (RHF) and Density Functional Theory (DFT) studies were carried out on the organic semi ... arrays), organic light emitting diodes (OLEDs), solar cells and low-cost devices (Kitamura,Arakawa, 2008;. Hwan et al.2004; Byoungnan,2008). Organic semiconductors are materials with semiconducting.

  9. Al Qaeda: Profile and Threat Assessment

    National Research Council Canada - National Science Library

    Katzman, Kenneth

    2005-01-01

    .... interests abroad, and against Western countries. But many believe that the Al Qaeda organization and its leadership are no longer as relevant to assessing the global Islamic terrorist threat as they were on September 11, 2001. Some believe U.S...

  10. 75 FR 3895 - Yale University, et al.;

    Science.gov (United States)

    2010-01-25

    ... DEPARTMENT OF COMMERCE International Trade Administration Yale University, et al.; Notice of Consolidated Decision on Applications for Duty-Free Entry of Electron Microscopes This is a decision consolidated pursuant to Section 6(c) of the Educational, Scientific, and Cultural Materials Importation Act of...

  11. 76 FR 62481 - Incapital LLC, et al.

    Science.gov (United States)

    2011-10-07

    ... SECURITIES AND EXCHANGE COMMISSION [Investment Company Act Release No. 29828; File No. 812-13922] Incapital LLC, et al.; Notice of Application September 30, 2011. AGENCY: Securities and Exchange Commission (``Commission''). ACTION: Notice of application for an order under section 12(d)(1)(J) of the Investment Company...

  12. Correction to Rothermund et al. (2005)

    Science.gov (United States)

    Rothermund, Klaus; Wentura, Dirk; De Houwer, Jan

    2005-01-01

    This article reports an error in the article "Retrieval of Incidental Stimulus-Response Associations as a Source of Negative Priming" by Rothermund et al. ("Journal of Experimental Psychology: Learning, Memory, and Cognition," Vol 31(3) May 2005, 482-495). Table 1 (p. 484) was incorrectly typeset. The correct layout is provided. (The following…

  13. Kinematics of Disease Progression in Bulbar ALS

    Science.gov (United States)

    Yunusova, Yana; Green, Jordan R.; Lindstrom, Mary J.; Ball, Laura J.; Pattee, Gary L.; Zinman, Lorne

    2010-01-01

    The goal of this study was to investigate the deterioration of lip and jaw movements during speech longitudinally in three individuals diagnosed with bulbar amyotrophic lateral sclerosis (ALS). The study was motivated by the need to understand the relationship between physiologic changes in speech movements and clinical measures of speech…

  14. Uses of a Myth: al-Andalus

    Directory of Open Access Journals (Sweden)

    Serafín Fanjul

    2009-06-01

    Full Text Available In the last two decades, the Spanish press treatment of the Muslim world reflects a change of tone from unsympathetic to enthusiastic, although the information is still marred by confusion and ignorance. This change of attitude has occurred in other Western countries as well, and it is due in part to immigration trends, control over oil resources, and the relativism of official discourses towards the Third World. In the case of Spain, however, there is an additional internal element at play: the mass-media reinvention of a mythical al-Andalus as a tolerant and pluralistic society. This idealized interpretation of seven centuries of Muslim presence in the Iberian Peninsula is fraught with ignorance and distortion of the historical record but is not new. The mystification of al-Andalus has its precedent in romantic accounts that saw in “Muslim Spain” a differential fact that reinforced the exotic image of the country. It can be attributed also to the strategy to “hispanicize” al-Andalus employed by Arabists and historians to make the subject matter appealing to unsympathetic Spanish audiences conditioned by the myth of the Reconquest. Intended or not, the manipulation of the myth of al-Andalus as a historical fact has ideological and political implications that demand an objective and balanced consideration.

  15. The wobbler mouse, an ALS animal model

    DEFF Research Database (Denmark)

    Moser, Jakob Maximilian; Bigini, Paolo; Schmitt-John, Thomas

    2013-01-01

    This review article is focused on the research progress made utilizing the wobbler mouse as animal model for human motor neuron diseases, especially the amyotrophic lateral sclerosis (ALS). The wobbler mouse develops progressive degeneration of upper and lower motor neurons and shows striking...

  16. Thermoluminescence of LaAlO3

    International Nuclear Information System (INIS)

    Morales H, A.; Zarate M, J.; Rivera M, T.; Azorin N, J.

    2015-10-01

    In this paper the thermoluminescent properties of doped lanthanum aluminate (LaAlO 3 ) with dysprosium ion (Dy) were studied. The thermoluminescence characteristics in the samples were obtained using an ultraviolet radiation of 220 nm. The LaAlO 3 :Dy samples were prepared by the modified Pechini method (Spray Dryer). The structural and morphological characterization was obtained by X-ray diffraction (XRD) and scanning electron microscopy (Sem) techniques respectively. The size particle composing the agglomerate was determined by Sem, agglomerated particles composed size of 2μm were observed. The thermoluminescence response of LaAlO 3 :Dy was compared with that obtained with the undoped sample. Thermoluminescence brightness curves of LaAlO 3 :Dy showed a peak centered at 185 grades C. Sensitivity of doped sample was greater, about 100 times compared with the undoped sample. Thermoluminescence response in function of the wavelength showed a maximum at 220 nm. Also the fading in thermoluminescence response was studied. (Author)

  17. Casting of particulate Al-base composites

    International Nuclear Information System (INIS)

    Moustafa, S.F.

    1997-01-01

    A molten Al-4 wt.% Cu as well as a Al-13 wt.% Si alloy have been mixed mechanically with particulate of SiC, Al 2 O 3 , or graphite. After the completion of mixing, each mixture was poured into a permanent mould to solidify. To overcome the problem of non-wettability that exists between the investigated particulate and the molten aluminum alloys the particulate was chemically treated by impregnation in a solution containing Na + ions. The loading of SiC or Al 2 O 3 particulate in the produced composites can be as high as 40 wt.%, and for graphite particles it can be 20 wt.%. The mixing time required to introduce and distribute the investigated particles into the molten matrix was as low as five minutes to recluce chemical reactions at the interfaces between them. Processing details and parameters controlling this technique are described. Metallographic examinations as well as tensile tests were carried out to characterize the microstructure, the distribution of the particles and the strength of these composites. The results display that the composites made by this technique have good microstructure and tensile properties. (orig.)

  18. 1 ITALIAN COLONISATION & LIBYAN RESISTANCE THE AL ...

    African Journals Online (AJOL)

    Ike Odimegwu

    ... was conquered and pacified by European arms, ensuring caravans could travel .... eventually attacked the Order (at Qiru) in 1902 (at which time al-Mahdi passed ... Ottoman rule was nominal, with real power in the hands of the local rulers ...

  19. Una ventana al mundo de Kafka.

    Directory of Open Access Journals (Sweden)

    Guillermo Sánchez Medina

    2003-03-01

    Full Text Available

    COMENTARIO AL LIBRO " EL MUNDO PSICOLÓGICO DE KAFKA" POR EL ACADÉMICO ADOLFO DE FRANCISCO ZEA.

     

    Fui invitado en forma comedida, por el doctor Adolfo De Francisco, para comentar su obra: "El Mundo Psicológico de Kafka". Respondí que no era literato y menos crítico de Kafka. Sin embargo, acepté
    hacerlo siendo consciente de las limitaciones que me acompañan y para las que pido de todos ustedes su consideración. Tenía sí el deseo al reto de lo incógnito.
    Además sus argumentos fueron contundentes, pues se referían al compromiso con la Academia y, sin decírmelo, era también con él en nuestra historia compartida. Mis motivaciones y expectativas personales conscientes eran múltiples para sumergirme en sus ideas que mueven el espíritu desde la piel a lo trascendente, de lo interno a lo externo y viceversa, y en que cada palabra puede ser objeto de análisis profundo, pues esa es su esencia. Por ejemplo cuando el doctor De Francisco se refiere a la sublimación y a la estética, a la política, a la religiosidad, a la burguesía, al campesinado, a la nobleza, al absolutismo, al arte o a la historia, a la cosmovisión sociológica y literaria, al psicoanálisis para afrontar la realidad interna y externa, entonces el autor penetra en el mundo de la fantasía y del psiquismo, para entender el simbolismo implícito de Kafka.
    Las motivaciones personales inconscientes, pertenecen a las tendencias irracionales de hundirme en espacios complejos para luego intentar'ordenarlos; en medio está
    la contratransferencia que me une con el autor Adolfo De Francisco y otra la que se refiere a la temática kafkiana...

  20. Study of the 27Al(n,2,)26Al reaction via accelerator mass spectrometry

    International Nuclear Information System (INIS)

    Wallner, A.

    2000-06-01

    The excitation function for the 27 Al(n,2n) 26 Al reaction is expected to show a strongly non-linear behavior in the neutron-energy region around 14 MeV, the neutron energy in D-T plasmas; thus the production rate of 26 Al (t 1/2 =7.2*10 5 a) in D-T fusion environments can in principle be used to measure the temperature of such plasmas. Existing measurements, however, are strongly discordant. Therefore, a new accurate measurement of the 27 Al(n,2n) 26 Al cross sections in the near threshold region (E n =13.5-14.8 MeV) was performed with the goal to achieve relative cross sections with the highest accuracy possible. In addition, the measurements were also designed to provide good absolute cross-section values, as absolute cross sections are important for radioactive waste predictions. Samples of Al metal were irradiated with neutrons in the energy range near threshold (E th =13.55 MeV) at the Radiuminstitutes of both Vienna and St. Petersburg, and in Tokai-mura, Japan. In Tuebingen irradiations with neutrons of higher energies (17 and 19 MeV) were performed. The amount of 26 Al produced during the irradiations was measured via accelerator mass spectrometry (AMS) at the Vienna Environmental Research Accelerator (VERA). This work represents the first 26 Al measurements for this new facility. With this system, a background as low as 3*10 -15 for 26 Al/ 27 Al isotope ratios was obtained, corresponding to a (n,2n) cross section of 0.04 mb. Utilizing AMS, cross sections with much higher precision and considerably closer to the threshold than in previous investigations could be measured. The prerequisite for its application as a temperature monitor, namely a very well known shape of the excitation function was met. A quantitative prediction of the sensitivity of this method for monitoring the temperature in a D-T fusion plasma was therefore possible. For thermal plasmas temperature changes in the order of 5 to 15 % should be detectable. An even higher sensitivity was found

  1. Medien als Lernform und die Trimediale Redaktion

    Directory of Open Access Journals (Sweden)

    Wolf Hilzensauer

    2015-01-01

    Full Text Available Der vorliegende Artikel beschreibt ein Konzept für eine handlungsorientierte Medienpädagogik im Bildungsbereich. Im Mittelpunkt steht dabei die SO!-Campusredaktion, die als Methode für expansives Lernen die Möglichkeit bietet, unabhängig von Thema oder Medium die Verantwortung für den Lernprozess in die Hände der Lernenden zu legen. Der Dokumentation von Reflexion über den Lernprozess wird dabei eine besondere Bedeutung zugesprochen. Gleichzeitig werden unterschiedliche mediale Gestaltungsmöglichkeiten (Audio/Radio, Video/Fernsehen und Zeitung – sowohl als Print- als auch als Onlinemedium vorgestellt, die durch das Konzept BYOD – bring your own device – auch einfach und niederschwellig im Bildungskontext umsetzbar sind. Dadurch ergeben sich innovative Möglichkeiten, einen Lernprozess sichtbar zu machen und gleichzeitig eine Grundlage für eine alternative Leistungsbeurteilung anzubieten. Die SO!-Campusredaktion wird derzeit an der Pädagogischen Hochschule Salzburg in Kooperation mit dem Communitysender FS1 und der Radiofabrik entwickelt und erprobt. Community Medien nehmen als MedienpartnerInnen eine bedeutende Stellung ein: Durch ihren offenen Zugang zu Know How und Equipment sowie durch die Möglichkeit, Medienproduktionen über die verfügbaren Distibutionskanäle (Radiofrequenz oder Sendeplatz einer breiten Bevölkerung zugänglich zu machen, gewinnt die Medienpädagogik einen wichtigen Mehrwert in ihrer schulischen und außerschulischen Arbeit. (Dieser Artikel knüpft an den Artikel "BYOD, Smartphonefilme und webbasierte Videoschnittprogramme" der Medienimpulse, Ausgabe 2/2014, an.

  2. Mechanochemical synthesis of Cu-Al and methyl orange intercalated Cu-Al layered double hydroxides

    Energy Technology Data Exchange (ETDEWEB)

    Qu, Jun, E-mail: forsjun@whut.edu.cn [School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070 (China); He, Xiaoman; Chen, Min; Hu, Huimin [School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070 (China); Zhang, Qiwu, E-mail: zhangqw@whut.edu.cn [School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070 (China); Liu, Xinzhong [College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350118 China (China)

    2017-04-15

    In this study, a mechanochemical route to synthesize a Cu-Al layered double hydroxide (LDH) and a methyl orange (MO) intercalated one (MO-LDH) was introduced, in which basic cupric carbonate (Cu{sub 2}(OH){sub 2}CO{sub 3}) and aluminum hydroxide (Al(OH){sub 3}) with Cu/Al molar ratio at 2/1 was first dry ground for 2 h and then agitated in water or methyl orange solution for another 4 h to obtain the LDH and MO-LDH products without any heating operation. The prepared samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Thermogravimetry (TG), Differential scanning calorimetry (DSC) and Scanning electron microscopy (SEM). The products showed high crystallinity phase of Cu-Al and MO intercalated Cu-Al LDH with no evident impurities, proving that the craft introduced here was facile and effective. The new idea can be applied in other fields to produce organic-inorganic composites. - Highlights: • A facile mechanochemical route to synthesize Cu-Al and MO intercalated Cu-Al LDH. • The products possesses high crystalline of LDH phase with no impure phases. • The dry milling process induces the element substitution between the raw materials. • The agitation operation helps the grain growth of LDH.

  3. Mechanochemical synthesis of Cu-Al and methyl orange intercalated Cu-Al layered double hydroxides

    International Nuclear Information System (INIS)

    Qu, Jun; He, Xiaoman; Chen, Min; Hu, Huimin; Zhang, Qiwu; Liu, Xinzhong

    2017-01-01

    In this study, a mechanochemical route to synthesize a Cu-Al layered double hydroxide (LDH) and a methyl orange (MO) intercalated one (MO-LDH) was introduced, in which basic cupric carbonate (Cu_2(OH)_2CO_3) and aluminum hydroxide (Al(OH)_3) with Cu/Al molar ratio at 2/1 was first dry ground for 2 h and then agitated in water or methyl orange solution for another 4 h to obtain the LDH and MO-LDH products without any heating operation. The prepared samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Thermogravimetry (TG), Differential scanning calorimetry (DSC) and Scanning electron microscopy (SEM). The products showed high crystallinity phase of Cu-Al and MO intercalated Cu-Al LDH with no evident impurities, proving that the craft introduced here was facile and effective. The new idea can be applied in other fields to produce organic-inorganic composites. - Highlights: • A facile mechanochemical route to synthesize Cu-Al and MO intercalated Cu-Al LDH. • The products possesses high crystalline of LDH phase with no impure phases. • The dry milling process induces the element substitution between the raw materials. • The agitation operation helps the grain growth of LDH.

  4. PRECIPITATION HARDENING IN B2-ORDERED NiAl BY Ni2AlTiCOMPOUND

    Institute of Scientific and Technical Information of China (English)

    W.H. Tian; K. Ohishi; M. Nemoto

    2001-01-01

    Microstructural variations and correlated hardness changes in B2-ordered NiAl containing fine precipitation of Ni2AlTi have been investigated by means of transmission electron microscopy (TEM) and hardness tests. The amount of age hardening is not large as compared to the large microstructural variations during aging. TEM observations have revealed that the L21-type Ni2AlTi precipitates keep a lattice coherency with the NiAl matrix at the beginning of aging. By longer periods of aging Ni2AlTi precipitates lose their coherency and change their morphology to the globular ones surrounded by misfit dislocations. The temperature dependence of the yield strength of precipitate-containing B2-ordered NiAl was investigated by compression tests over the temperature range of 873-1273K. The fine precipitation of Ni2AlTi was found to enhance greatly the yield strength and the high-temperature strength is comparison with that of superalloy Mar-M200.``

  5. Superstructure formation in PrNi_2Al_3 and ErPd_2Al_3

    International Nuclear Information System (INIS)

    Eustermann, Fabian; Hoffmann, Rolf-Dieter; Janka, Oliver; Oldenburg Univ.

    2017-01-01

    The intermetallic phase ErPd_2Al_3 was obtained by arc-melting of the elements and subsequent annealing for crystal growth. The sample was studied by X-ray diffraction on powders and single crystals. The structure of ErPd_2Al_3 was refined from X-ray diffraction data and revealed a superstructure of PrNi_2Al_3 - a CaCu_5 derivative (P6/m, a=1414.3(1), c=418.87(3) pm wR=0.0820, 1060 F"2 values, 48 variables). The same superstructure was subsequently found for PrNi_2Al_3 (P6/m, a=1407.87(4), c=406.19(2) pm, wR=0.0499, 904 F"2 values, 47 variables). In the crystal structure, the aluminium and transition metal atoms form a polyanionic network according to [T_2Al_3]"δ"-, while rare earth atoms fill cavities within the networks. They are coordinated by six transition metal and twelve aluminum atoms. In contrast to the PrNi_2Al_3 type structure reported so far, two crystallographic independent rare-earth sites are found of which one (1b) is shifted by 1/2 z, causing a distortion in the structure along with a recoloring of the T and Al atoms in the network.

  6. Stagnation of the exploitation of Al ores and the depression of world prices of Al

    Directory of Open Access Journals (Sweden)

    Slavkovský Jozef

    1999-03-01

    Full Text Available In the contribution, data on Al – a metal of the 20th century are compiled together with the problems of genesis of the Al mineral raw ma-terials as well as types of bauxite and Al-laterite deposits. Furthermore, an overview of the world exploitation of bauxite during 1935-1980 is given along with the prognoses to 2000 and present situation (1992-1996. Overviews of the production of Al follows, providing its rela-tion to the bauxite exploitation. Contrary to the prognoses, a stabilization or stagnation has been observed in the exploitation of bauxite and production of Al during nineties, which a tendency is directly reflected in the world price of this commodity. When analyzing the Al prices for a longer period, some serious deviations can be noticed, that however presently represent a long-term minimum. We hope the stagnation of the production and the price decline are only temporary and new possibilities of the utilization of Al will be found soon.

  7. Pemikiran Politik al-Shawkânî dalam Fath al-Qadîr

    Directory of Open Access Journals (Sweden)

    Yusuf Hanafi

    2015-09-01

    Full Text Available Muhammad b. ‘Alî Muhammad b. ‘Abd Allâh al-Shawkânî al-San‘ânî. He was born in the Hijrah in Shawkân village, Yemen on Monday 28 Dhû al-Qa‘dah 1172 H and died on Tuesday, 27 Jumâd al-Akhîr 1250 H at the age about 78 years. Al-Shawkânî grew up in the San‘a city, it is the capital of the republic of Yemen now. He study first time about religion from his father, then from renowed scholars in San‘a and its surrounding, he was known as a scolar who mastered the various branches of religious sciences. Such as tafsîr, h}adîth, fiqh, us}ûl al-fiqh, history, science of kalâm, philosophy, balâghah, mant}iq etc. the main issue in this article is how political thought in the book of tafsir Fath al-Qadîr is the work of Shawkânî. At the end of article, the authors found that the intended political thinking in the study of Fath al-Qadîr is about constitutional ideas. These ideas about the constitution is limited to the concept of leadership and deliberation, the concept of the right of citizen to obtain justice, and the concept pf the right of citizens to live association and assembly

  8. Mechanical Properties and Microstructure of Neutron Irradiated Cold-worked Al-1050 and Al-6063 Alloys

    International Nuclear Information System (INIS)

    Munitz, A.; Cotler, A; Talianker, M.

    1998-01-01

    The impact of neutron irradiation on the internal microstructure, mechanical properties and fracture morphology of cold-worked Al-1050 and Al-6063 alloys was studied, using scanning and transmission electron microscopy, and tensile measurements. Specimens consisting of 50 mm long and 6 mm wide gauge sections, were punched out from Al-1050 and Al-6063 23% cold-worked tubes. They were exposed to prolonged neutron irradiation of up to 4.5x10 25 and 8x10 25 thermal neutrons/m 2 (E -3 s -1 . In general, the uniform and total elongation, the yield stress, and the ultimate tensile strength increase as functions of fluence. However, for Al-1050 a decrease in the ultimate tensile strength and yield stress was observed up to a fluence of 1x10 25 thermal neutrons/m 2 which then increase with thermal neutrons fluence. Metallographic examination and fractography for Al-6063 revealed a decrease in the local area reduction of the final fracture necking. This reduction is accompanied by a morphology transition from ductile transgranular shear rupture to a combination of transgranular shear with intergranular dimpled rupture. The intergranular rupture area increases with fluence. In contrast, for Al-1050, fracture morphology remains ductile transgranular shear rupture and the final local area reduction remains almost constant No voids could be observed in either alloy up to the maximum fluence. The dislocation density of cold-worked Al was found to decrease with the thermal neutron fluence. Prolonged annealing of unirradiated cold-worked Al-6063 at 52 degree led to similar results. Thus, it appears that, under our irradiation conditions, whereby the temperature encompassing the samples increases the exposure to this thermal field is the major factor influencing the mechanical properties and microstructure of aluminum alloys

  9. Thermodynamic assessment of the Al-Ru system

    CSIR Research Space (South Africa)

    Prins, SN

    2003-03-01

    Full Text Available describes the order disorder transformation with one Gibbs energy function. The RuAl6 phase was described as a stoichiometric phase and the remaining intermetallic phases (Ru4Al13, RuAl2 and Ru2Al3) were modelled with the sublattice model. The solubility...

  10. Calculation of Gibbs energy of Zr-Al-Ni, Zr-Al-Cu, Al-Ni-Cu and Zr-Al-Ni-Cu liquid alloys based on quasiregular solution model

    International Nuclear Information System (INIS)

    Li, H.Q.; Yang, Y.S.; Tong, W.H.; Wang, Z.Y.

    2007-01-01

    With the effects of electronic structure and atomic size being introduced, the mixing enthalpy as well as the Gibbs energy of the ternary Zr-Al-Cu, Ni-Al-Cu, Zr-Ni-Al and quaternary Zr-Al-Ni-Cu systems are calculated based on quasiregular solution model. The computed results agree well with the experimental data. The sequence of Gibbs energies of different systems is: G Zr-Al-Ni-Cu Zr-Al-Ni Zr-Al-Cu Cu-Al-Ni . To Zr-Al-Cu, Ni-Al-Cu and Zr-Ni-Al, the lowest Gibbs energy locates in the composition range of X Zr 0.39-0.61, X Al = 0.38-0.61; X Ni = 0.39-0.61, X Al = 0.38-0.60 and X Zr = 0.32-0.67, X Al = 0.32-0.66, respectively. And to the Zr-Ni-Al-Cu system with 66.67% Zr, the lowest Gibbs energy is obtained in the region of X Al = 0.63-0.80, X Ni = 0.14-0.24

  11. Mechanical properties and electronic structures of Fe-Al intermetallic

    Energy Technology Data Exchange (ETDEWEB)

    Liu, YaHui; Chong, XiaoYu; Jiang, YeHua, E-mail: jiangyehua@kmust.edu.cn; Zhou, Rong; Feng, Jing, E-mail: jingfeng@kmust.edu.cn

    2017-02-01

    Using the first-principles calculations, the elastic properties, anisotropy properties, electronic structures, Debye temperature and stability of Fe-Al (Fe{sub 3}Al, FeAl, FeAl{sub 2}, Fe{sub 2}Al{sub 5} and FeAl{sub 3}) binary compounds were calculated. The formation enthalpy and cohesive energy of these Fe-Al compounds are negative, and show they are thermodynamically stable structures. Fe{sub 2}Al{sub 5} has the lowest formation enthalpy, which shows the Fe{sub 2}Al{sub 5} is the most stable of Fe-Al binary compounds. These Fe-Al compounds display disparate anisotropy due to the calculated different shape of the 3D curved surface of the Young’s modulus and anisotropic index. Fe{sub 3}Al has the biggest bulk modulus with the value 233.2 GPa. FeAl has the biggest Yong’s modulus and shear modulus with the value 296.2 GPa and 119.8 GPa, respectively. The partial density of states, total density of states and electron density distribution maps of the binary Fe-Al binary compounds are analyzed. The bonding characteristics of these Fe-Al binary compounds are mainly combination by covalent bond and metallic bonds. Meanwhile, also exist anti-bond effect. Moreover, the Debye temperatures and sound velocity of these Fe-Al compounds are explored.

  12. High temperature properties of the Cr-Nb-Al-N coatings with increasing Al contents

    OpenAIRE

    Li, W. Z.; Polcar, T.; Evaristo, M.; Cavaleiro, A.

    2013-01-01

    Cr-Nb-Al-N coatings with Al content from 0 to 12 at.% were deposited by d.c. reactive magnetron sputtering. The coatings were annealed in protective atmosphere at 800 and 900 °C for 1 h and exposed to air at 800, 900 and 1200 °C for different times. The chemical composition, structure, microstructure, hardness and adhesive/cohesive strength of the coatings, in as-deposited and annealed conditions, were investigated and the oxidation resistance was evaluated. As expected, the Al content increa...

  13. Structure of 26Al studied by one - nucleon transfer reaction 27Al(d,t

    Directory of Open Access Journals (Sweden)

    Srivastava Vishal

    2015-01-01

    Full Text Available The excited states of 26Al have been produced and studied using 27Al(d,t reaction with 25 MeV deuteron as projectile. Optical model potential parameters were extracted from the measured elastic scattering angular distribution. Zero range distorted wave Born approximation analysis for the ground and 0.223 MeV states of 26Al have been done. The spectroscopic factors calculated for these states are found to be in good agreement with the previously reported values.

  14. ITIJAHAT KAUN AL-NABI WA AL-RASUL FI SYAKHSIYAH MUHAMMAD FI NATSR MAULID AL-BARZANJI

    Directory of Open Access Journals (Sweden)

    Himmah Istomah

    2017-08-01

    Full Text Available One of human personalities is humanist. Based on the understanding of Maslow’s theory of motivation, researcher seeks to uncover kinds of motivational needs of Muhammad Saw contained in Maulid Al-Barzanjiy (the work of Ja 'far bin Hasan al-Barzanji (d. 1763 M. The goal is realized through a descriptive qualitative approach with  text analysis  about Psycholiterature of Endraswara. The results of this study indicate that in Maulid Al-Barzanji there are Muhammad Saw’s five needs and how their satisfying perfectly,  namely: physiological needs, safety, social, esteem, and self-actualization. Thus, it can be interpreted that Muhammad SAW as an ordinary human having motivational needs. His prophetic and apostleship honor is not a direct blessing from Allah, but he had been through some complicated processes in life. This can be applied by his followers, so they can complete their motivational needs to reach the satiation as a caliph and to be useful person in this world.

  15. Solidification processing of intermetallic Nb-Al alloys

    Science.gov (United States)

    Smith, Preston P.; Oliver, Ben F.; Noebe, Ronald D.

    1992-01-01

    Several Nb-Al alloys, including single-phase NbAl3 and the eutectic of Nb2Al and NbAl3, were prepared either by nonconsumable arc melting in Ar or by zone processing in He following initial induction melting and rod casting, and the effect of the solidification route on the microstructure and room-temperature mechanical properties of these alloys was investigated. Automated control procedures and melt conditions for directional solidification of NbAl3 and the Nb2Al/Nb3Al eutectic were developed; high purity and stoichiometry were obtained. The effects of ternary additions of Ti and Ni are described.

  16. Environmental embrittlement of intermetallic compounds in Fe-Al alloys

    Institute of Scientific and Technical Information of China (English)

    张建民; 张瑞林; S.H.YU; 余瑞璜

    1996-01-01

    First,it is proposed that hydrogen atoms occupy the interstitial sites in Fe3Al and FeAl.Then the environmental embrittlement of intermetallic compounds in Fe-Al alloys is studied in the light of calculated valence electron structures and bond energy of Fe3Al and FeAl containing hydrogen atoms.From the analyses it is found that the states of metal atoms will change,in which more lattice electrons will become covalent electrons to bond with hydrogen atoms when the atomic hydrogen diffuses into the intermetallic compounds in Fe-Al alloys,which will result in the decrease of local metallicity in Fe3Al and FeAl.Meanwhile,it is found that the crystal will easily cleave since solute hydrogen bonds with metal atoms and severely anisotropic bonds form.As a conclusion,these factors result in the environmental embrittlement of Fe3Al and FeAl.

  17. Gate length scaling effect on high-electron mobility transistors devices using AlGaN/GaN and AlInN/AlN/GaN heterostructures.

    Science.gov (United States)

    Liao, S Y; Lu, C C; Chang, T; Huang, C F; Cheng, C H; Chang, L B

    2014-08-01

    Compared to AlGaN/GaN HEMT with 0.15 μm T-gate length, the AlInN/AlN/GaN one exhibits much higher current density and transconductance of 1558 mA/mm at Vd = 2 V and 330 mS/mm, respectively. The high extrinsic ft and fmax of 82 GHz and 70 GHz are extracted from AlInN/AlN/GaN HEMT. Besides, we find that the transconductance roll-off is significant in AlGaN/GaN, but largely improved in AlInN/AlN/GaN HEMT, suggesting that the high carrier density and lattice-matched epitaxial heterostructure is important to reach both large RF output power and high operation frequency, especially for an aggressively gate length scaling.

  18. Study of the AlON-VN composite ceramic

    Energy Technology Data Exchange (ETDEWEB)

    Sainbaatar; Zhang Zuotai; Li Wenchao; Wang Xidong [Dept. of Physical Chemistry of Metallurgy, Univ. of Science and Technology Beijing, BJ (China)

    2005-07-01

    Aluminium oxynitride-vanadium nitride (AlON-VN) composite ceramic was fabricated based on thermodynamic analysis of V-Al-O-N systems. The results indicated that the VN dispersed homogeneously in AlON matrix and can reinforce AlON matrix. Oxidation behavior was studied and the results showed that it belongs to self-protective oxidation due to the good adherence of oxidation product. Therefore, AlON-VN composites have excellent oxidation resistance. (orig.)

  19. ALS1 and ALS3 gene expression and biofilm formation in Candida albicans isolated from vulvovaginal candidiasis

    Directory of Open Access Journals (Sweden)

    Shahla Roudbarmohammadi

    2016-01-01

    Conclusion: The results attained indicated that there is an association between the expression of ALS1 and ALS3 genes and fluconazole resistance in C. albicans. A considerable percent of the isolates expressing the ALS1 and ALS3 genes may have contributed to their adherence to vagina and biofilm formation.

  20. Studies in the Crystalline Electric Field in Pr2 Al and Pr Al by the Inelastic Neutron Scattering Method

    International Nuclear Information System (INIS)

    Slisenko, V.I.; Ivanitskij, P.G.; Vasil'kevich, A.A.; Krotenko, V.T.; Majstrenko, A.N.

    1993-01-01

    Results of inelastic neutron scattering in polycrystalline Pr 2 Al and Pr Al are reported. The parameters of the crystal field Hamiltonian for the orthorhombic point symmetry of the Pr 3+ ions in Pr 2 Al and Pr Al are derived from neutron spectra. Using These parameters the magnetic contribution to the specific heat is calculated