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Sample records for menopausia puesta al

  1. Soporte nutricional en el paciente crítico: una puesta al día

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    Agudelo Ochoa, Gloria María; Giraldo Giraldo, Nubia Amparo

    2008-01-01

    Los pacientes críticos presentan alteraciones que se manifiestan en desórdenes clínicos que demandan una atención médica y nutricional oportuna donde el soporte nutricional juega un papel fundamental. El objetivo del artículo fue realizar una puesta al día sobre los avances del soporte nutricional en el paciente crítico. Se revisaron publicaciones en bases de datos sobre tópicos como la selección de pacientes candidatos al soporte, evaluación del estado nutricional, determinación de las neces...

  2. Medición de cortisol y sus fracciones: Una puesta al día

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    Patricia Maidana

    2013-12-01

    Full Text Available La determinación del cortisol sérico total forma parte fundamental de la exploración bioquímica de la función adrenocortical. Dado que esta hormona circula en plasma, en parte unida a proteínas de transporte y en parte en estado libre, existe la posibilidad de realizar la determinación de sus diferentes fracciones no solo en sangre sino también en orina, saliva y otros fluidos biológicos. Es posible realizar tanto determinaciones basales como pruebas funcionales y de esta manera evaluar la secreción de cortisol en un momento dado del día, estudiar su variación circadiana y analizar su relación con el resto de los componentes del eje hipotálamo-hipófiso-adrenal. Las mediciones habituales de cortisol en sangre, saliva y orina reflejan los niveles de esta hormona en el momento de la recolección o durante un período de 24 horas. Recientemente han aparecido trabajos en los cuales se propone la determinación de cortisol en cabello y uñas como potenciales marcadores del estatus hormonal en períodos más prolongados. El objetivo de esta revisión es realizar una puesta al día acerca de la metodología disponible actualmente en nuestro medio para la evaluación del eje adrenal, haciendo hincapié en su aplicación para el diagnóstico clínico.

  3. Menopausia y modernidad

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    Darío Gil Torres

    1999-04-01

    Full Text Available La ciencia, como racionalidad analítica, es el discurso del modelo explicativo de los aconteceres sociales denominado Modernidad. Tal racionalidad fundada en la Duda, lleva a los seres humanos a interrogarse sobre su lugar en el mundo a partir del control sobre éste. Si bien la Ciencia ha permitido mejorar el nivel de vida de las comunidades evidenciado en algunas manifestaciones orgánicas antes desconocidas en su dinámica, por ejemplo la menopausia, también lo ha hecho con el refinamiento de las estrategias educativas para el control social, lo que permite afirmar que tal discurso es la forma más eficiente de llevar a cabo dicho control. Estas estrategias cobijan a todos aquellos seres humanos que pueden poner en crisis el grupo social y, especialmente, su modo de producción. En este punto cobijan dos categorías analíticas aparentemente disímiles: adolescencia y menopausia, dado que ambas acceden a un nuevo cuerpo, el sexualizado que permite la experiencia estética. Para el control de los jóvenes se establecen estrategias específicas (el proyecto de vida, la educación sexual, entre otras, lo que permite configurarlos en la culpa; para las mujeres menopáusicas se establecen estrategias desde pathos, es decir, desde la asunción de la menopausia desde lo clínico, aspecto en el que tienen especial protagonismo la medicina y la industria farmacéutica. Se propone que dado que no se puede ofrecer a las mujeres mayores nociones de futuro, su control viene dado desde la enfermedad, aspecto que empieza en la escuela a través de la idea de lo femenino como un cuerpo reproductivo, lo que tiene relación con la menstruación y los mitos asociados a ella. Se plantea, además, que la terapia de reemplazo hormonal ha sido utilizada en dirección de la reproducción social.

  4. Menopausia y terapia hormonal de reemplazo

    OpenAIRE

    Cobo, Edgard; Fundación Valle de Lili

    1996-01-01

    La terapia hormonal en la menopausia/ menopausia y terapia hormonal de reemplazo (THR)/¿Qué es la menopausia?/ ¿Porqué hay tanto “ruido” acerca de la menopausia, si es un evento natural en la vida de toda mujer?/ ¿Qué significa terapia hormonal de reemplazo?(THR)/ ¿Cuáles son las ventajas de recibir la THR?/ Mejoraría en la calidad de vida/ Prevención de enfermedad/ ¿Quiere esto decir que absolutamente todas las mujeres deber recibir una THR?/ ¿Cuáles son las molestias más frecuentes a las qu...

  5. Menopausia. Educación sanitaria en la menopausia (y II)

    OpenAIRE

    Goberna Tricas, Josefina

    1997-01-01

    Se presenta la segunda parte del artículo dedicado a la menopausia que inició su publicación en Revista ROL de Enfermería; 230: 72-77. En este número se abordan los estilos de vida saludables en la menopausia con respecto a la alimentación, mantenimiento de la actividad física y mental, actividades preventivas, atención sanitaria en la menopausia y tratamiento hormonal sustitutivo.

  6. Menopausia: representaciones sociales y prácticas

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    Pelcastre-Villafuerte Blanca

    2001-01-01

    Full Text Available Objetivo. Caracterizar los significados que se atribuyen al proceso de la menopausia como una primera aproximación al mundo representacional de este evento. Material y métodos. Estudio cualitativo, hecho entre septiembre y octubre de 1998 con 20 mujeres de entre 45 y 65 años de edad, residentes en los municipios de Cuernavaca y Emiliano Zapata del estado de Morelos, México. Se efectuaron sendas entrevistas a profundidad, utilizando una guía con los siguientes apartados: datos sociodemográficos, diagnóstico, sentimientos y sensaciones, cambios en el estilo de vida, cambios fisiológicos e información. Resultados. Se halla una representación que se construye alrededor de la menopausia en términos de cese de la fertilidad y entrada al envejecimiento. Esta caracterización tiene que ver también con otras construcciones como la concepción de la mujer, del cuerpo y de la sexualidad. Conclusiones. En este artículo se retoman principalmente los resultados con relación a las prácticas de las mujeres como consecuencia de la vivencia que tienen de la menopausia, entre las que sobresale la visita al médico. Se discuten las implicaciones desde el marco de la construcción social de los significados. El texto completo en inglés de este artículo está disponible en: http://www.insp.mx/salud/index.html

  7. Menopausia y evolución

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    Darío Gil Torres

    2000-04-01

    Full Text Available Se cuestiona una posible relación entre dos eventos asociados a “lo natural”. Al hacerlo, se establece un marco conceptual para cada uno de los eventos. Para Evolución se plantea que es un proceso independiente de la lectura del observador y que éste sólo puede plantear un modelo explicativo que responde por la observación y no por la entidad. Así mismo, que Evolución está determinada estructuralmente por la relación existente entre organismo y entorno, aspecto observado en la conducta y no por los genes ni por el entorno, como ha sido su lectura hasta hoy; aunque se acepta que los genes son parte de la estructura, éstos asimilan los cambios inducidos por el entorno y es el sistema el que da direccionalidad, sin noción de progreso. Para el segundo, menopausia, se plantea que es un proceso normal del cuerpo femenino y no tiene filogenia, a pesar de su base genética; por lo tanto, es un proceso intraespecífico que responde por niveles de estrés y reacciones metabólicas que permiten sobrevivir a los seres humanos. Así, no se les encuentra relación y sirven para ser utilizados en lo social: uno para secularizar representaciones colectivas y otro para ejercer control sobre el cuerpo femenino.

  8. La menopausia, época de cambio: Soluciones desde la farmacia comunitaria

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    Pérez Benajas MA

    2010-03-01

    Full Text Available OBJETIVOS Conocer las preocupaciones de las usuarias de la farmacia en relación a la menopausia y elaborar una guía de dispensación aplicable en la farmacia comunitaria. MÉTODO Estudio descriptivo, transversal, cuantitativo realizado en 39 mujeres que referían tener preocupaciones sobre problemas asociados a menopausia, utilizando una encuesta personal. Posterior estudio de mercado de las soluciones aplicables a los mismos desde la oficina de farmacia. RESULTADOS Los problemas que más inquietaban fueron los sofocos y sudores nocturnos en un 60% de los casos, en segundo lugar el insomnio e irritabilidad en un 55% de los casos. La atrofia vaginal en un 40%. En nuestro país la legislación vigente permite la comercialización de plantas con fitoestrógenos como medicamento y como suplemento nutricional. Podemos encontrar en el Catálogo de Parafarmacia del Consejo General de Colegios de Farmacéuticos diferentes grupos que tratan síntomas menores de la menopausia a nivel genital. CONCLUSIONES La menopausia es a veces un problema mal entendido y poco consultado por las mujeres que al mismo tiempo demandan soluciones. Las acciones de educación sanitaria en una oficina de farmacia deben ser realizadas centrándose en las demandas de las pacientes.

  9. Aspectos sociopsicológicos del climaterio y la menopausia

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    Dayana Couto Núñez

    2014-10-01

    Full Text Available El climaterio y la menopausia adquieren mayor trascendencia con el transcurso del tiempo. Al respecto, el concepto de calidad de vida se ha ido convirtiendo en un aspecto importante cuando la mujer climatérica se presenta ante el especialista, en busca de un mayor bienestar posible. En la edad mediana, el organismo se torna más frágil como consecuencia de las variaciones fisiológicas naturales del climaterio y la repercusión del contexto social sobre la persona, cuya sobrecarga física y mental favorece la aparición de procesos que deterioran la salud femenina y hacen más crítico el cuadro sintomático en este período, todo lo cual puede agravarse si existen un trastorno psicogénico previo y algunos elementos desfavorables del medio circundante

  10. Los trastornos de ansiedad durante la transición a la menopausia

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    A. Carvajal-Lohr

    2016-01-01

    Full Text Available La menopausia es la interrupción definitiva de las menstruaciones resultado de la pérdida de la actividad folicular del ovario. El periodo inmediatamente antes de la menopausia y el primer año después de la misma se conoce como perimenopausia. La posmenopausia se define como el periodo que transcurre desde un año a partir de la fecha de última menstruación, sin importar si la menopausia fue inducida o espontánea. Debido al incremento de la esperanza de vida en la mujer mexicana, mayor número de ellas alcanzan la edad promedio de la menopausia (45-59 años y pasan una parte significativa de su vida en la posmenopausia. Se ha observado que los trastornos psiquiátricos son más frecuentes en mujeres que en hombres, y que la perimenopausia es una etapa en la cual se incrementan los síntomas psicológicos, así como el riesgo de sufrir depresión mayor y trastornos de ansiedad. Se debe diferenciar cuando la ansiedad es un síntoma normal ante determinadas situaciones cotidianas de estrés y cuando comienza a tener una presentación irracional por un estímulo ausente, por una intensidad excesiva con relación al estímulo, o cuando la duración es prolongada y presenta recidivas sin motivo, ocasionando grave disfuncionalidad en el paciente. En esta revisión presentamos datos acerca de los síntomas de ansiedad durante la transición a la menopausia y hacemos alusión al trastorno de ansiedad generalizada y trastorno de pánico, ya que se ha observado una mayor prevalencia de estas patologías durante la transición a la menopausia, probablemente debido a los cambios hormonales que se viven durante esta etapa.

  11. PET/CT en Urología Oncológica: Puesta al día

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    David Ladrón de Guevara, Dr.

    2018-03-01

    Full Text Available Resumen: A pesar del amplio uso actual del PET/CT en patología oncológica, su expansión en urología ha sido bastante más lenta, debido principalmente a la excreción fisiológica de la F18-Fluorodeoxiglucosa (F18-FDG por vías urinarias y a la baja captación de F18-FDG de varios de los tumores urológicos, principalmente renales y prostáticos. Debido a las mejoras técnicas del PET/CT y al desarrollo de nuevos radiotrazadores distintos al F18-FDG, su uso en oncología urológica ha aumentado en los últimos años. En cáncer testicular, es el método de elección en masas residuales post quimioterapia. En cáncer vesical muestra un aumento progresivo en su uso tanto para etapificación como para seguimiento post tratamiento. En cáncer renal es útil en sospecha de recidiva local y vigilancia post tratamiento. En cáncer de próstata, gracias al advenimiento de radiotrazadores específicos como la F18/C11-Colina y G68-PSMA, es de amplio uso en pacientes que se han realizado tratamiento curativo y que presentan recidiva bioquímica. El desarrollo de nuevos radiotrazadores y de la técnica híbrida PET/MR posiblemente potenciarán aún más las aplicaciones en urología oncológica. Summary: In spite of extensive use of PET/CT in general oncology, its expansion in urological oncology has been quite slower, due principally to F18-Fluorodeoxiglucosa (F18-FDG physiological urinary excretion and low F18-FDG uptake of several of urological tumors, mainly renal and prostatic tumors. Owing to PET/CT technical improvements and the development of new radiopharmaceuticals different than F18-FDG, the use of PET/CT in oncological urology has increase last years. In testis cancer, it represents the best choice for assessment of residual mass post chemotherapy. Its clinical use has progressively increased for staging and follow up of patients with bladder cancer. In renal cancer, PET/CT is useful for suspicion of local relapse and surveillance. In

  12. Obesidad y menopausia Obesity and menopause

    OpenAIRE

    I. Pavón de Paz; C. Alameda Hernando; J. Olivar Roldán

    2006-01-01

    La menopausia es una de las etapas críticas en la vida de la mujer en la que se favorece la ganancia de peso y el desarrollo o agravamiento de la obesidad. Es en ésta época cuando se encuentra la prevalencia de obesidad más elevada. Las causas de éste problema son múltiples, unas se relacionan claramente con el hipoestrogenismo y otras dependen de la edad, condicionando un aumento de la ingesta y una disminución del gasto energético. Esta ganancia ponderal se asocia a consecuencias adversas p...

  13. Desórdenes lipídicos: una puesta al día Lipid disorders: an updating

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    Mayra Sánchez León

    2003-04-01

    Full Text Available Las dislipidemias son desórdenes metabólicos frecuentes, que se constituyen en un importante factor de riesgo de enfermedades, las cuales tienen como sustrato anatómico la aterosclerosis. El efecto particularmente nocivo de los niveles elevados de lípidos en el plasma está bien documentado en relación con la aparición y progresión de la enfermedad coronaria (prevención primaria y secundaria. Su manejo adecuado presupone el conocimiento de los niveles de colesterol de lipoproteína de baja densidad (C-LDL deseados, de acuerdo con la estratificación del riesgo cardiovascular del paciente. Se recomienda siempre en su tratamiento, independientemente de la categoría de riesgo, los cambios terapéuticos en el estilo de vida, y se reserva el tratamiento farmacológico para aquellos pacientes que con lo anterior no lograron las metas propuestas y para los de alto riesgo. Con la presente revisión pretendemos poner al día los principales aspectos relacionados con su clasificación, diagnóstico y tratamiento.Dyslipidemias are frequent metabolic disorders that are an important risk factor for diseases and have atherosclerosis as anatomical substrate. The particularly negative effect of high plasma lipid levels is well documented as to the occurrence and progression of the coronary disease (primary and secondary prevention. The adequate management entails knowledge of the desirable low-density lipoprotein cholesterol levels according to the cardiovascular risk stratification of the patient. Regardless of the risk category, the treatment recommends therapeutic changes in the lifestyle whereas drug treatment is reserved for those patients who did not succeed in attaining the proposed goals and for high-risk patients. The present review intends to update the fundamental aspects related to classification, diagnosis and treatment of dyslipidemias.

  14. Menopausia: representaciones sociales y prácticas Social representations and practices of menopause

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    Blanca Pelcastre-Villafuerte

    2001-10-01

    Full Text Available Objetivo. Caracterizar los significados que se atribuyen al proceso de la menopausia como una primera aproximación al mundo representacional de este evento. Material y métodos. Estudio cualitativo, hecho entre septiembre y octubre de 1998 con 20 mujeres de entre 45 y 65 años de edad, residentes en los municipios de Cuernavaca y Emiliano Zapata del estado de Morelos, México. Se efectuaron sendas entrevistas a profundidad, utilizando una guía con los siguientes apartados: datos sociodemográficos, diagnóstico, sentimientos y sensaciones, cambios en el estilo de vida, cambios fisiológicos e información. Resultados. Se halla una representación que se construye alrededor de la menopausia en términos de cese de la fertilidad y entrada al envejecimiento. Esta caracterización tiene que ver también con otras construcciones como la concepción de la mujer, del cuerpo y de la sexualidad. Conclusiones. En este artículo se retoman principalmente los resultados con relación a las prácticas de las mujeres como consecuencia de la vivencia que tienen de la menopausia, entre las que sobresale la visita al médico. Se discuten las implicaciones desde el marco de la construcción social de los significados. El texto completo en inglés de este artículo está disponible en: http://www.insp.mx/salud/index.htmlObjective. To characterize the meanings attributed to menopause, as a first approximation to the representational world of this event. Material and Methods. A qualitative study was conducted between September and Octuber 1998, in twenty women aged 45-65 years, residents of Cuernavaca and Emiliano Zapata, municipalities of Morelos state, Mexico. Twenty in-depth interviews were conducted using a guide, to collect data on sociodemographic variables, diagnosis, feelings and emotions, changes in life style, and physiological changes. Results. Findings show that menopause is represented as the end of fertility and the beginning of old age

  15. MENOPAUSIA: UNA VISIÓN CLÍNICA

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    David Vásquez Awad

    2016-11-01

    Full Text Available

    La menopausia es una etapa en la vida de la mujer. Es un proceso fisiológico que, como la menarquía o el embarazo, conlleva ajustes que ejercen una gran influencia en todos los organismos y sistemas a nivel físico, social, mental y emocional. El cese de la función ovárica −y por ende, reproductiva− significa un cambio qué, no por ser natural, está exento de múltiples consecuencias.

    Durante las últimas décadas y en razón, por una parte, del incremento en la expectativa de vida y, por otra parte, en el papel protagónico que, afortunadamente, juega la mujer en la marcha de la sociedad, tomó relevancia especial el conocimiento acerca de la menopausia y todo lo que ella conlleva, y que ha generado en el nacimiento de una “medicina de género”, lo que obliga a que todo el personal de salud se involucre en el acompañamiento de la mujer madura.

    Los años de experiencia, las múltiples observaciones, investigaciones y publicaciones, los intercambios de conocimientos en diferentes escenarios en los ámbitos local y global, y el genuino interés en compartir y provocar inquietud acerca de la menopausia y su entorno, nos han motivado a escribir esta obra. Hemos propuesto a colegas brillantes de distintas latitudes que nos acompañen con sendos capítulos en campos en que han sido protagonistas, y la respuesta de todos fue de verdadero interés y generosidad académica.

    En cada capítulo se plasmó no solo la vasta experiencia de su autor, sino la única evidencia que existe en cada tema particular. El profesor Andrea Genazzani escribió entusiasmado el prólogo y, a manera de epílogo, el profesor Wulf Utian ha escrito todo un resumen del estado del arte en que se mueve el tema de la menopausia, sus consecuencias, su acompañamiento y manejo. A todos ellos nuestra gratitud. La Federación Latinoamericana de Sociedades de Climaterio y Menopausia (FLASCYM ha dado el aval académico para la obra y, por ello, tambi

  16. Mastitis: Puesta al día

    OpenAIRE

    Espínola-Docio, Blanca; Costa-Romero, Marta; Díaz-Gómez, N. Marta; Paricio-Talayero, José M

    2016-01-01

    La mastitis es una de las principales causas de abandono evitable de la lactancia materna, con el aumento de la morbimortalidad infantil que ello supone, pero no hay uniformidad en los criterios diagnósticos ni terapéuticos. El diagnóstico de la mastitis aguda es fundamentalmente clínico, y, solo en determinados casos, está indicado el cultivo de leche. El drenaje del pecho es fundamental en el tratamiento, por lo que debe mantenerse la lactancia. Si persisten los síntomas o si existe mucha r...

  17. Menopausia: tiempo para repensarla Menopause: time to rethink it

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    Carlos Enrique Escobar Gónima

    2003-02-01

    Full Text Available Se hace un recuento histórico de cómo la cultura médica occidental ha percibido la menopausia, su transformación de condición fisiológica en una enfermedad y cómo a consecuencia de nuevas publicaciones relacionadas con las terapias de reemplazo hormonal se hace necesario reconsiderar muchas actitudes y prácticas médicas que se desarrollaron en los últimos años. This article presents a historic review about the recent ways in which medicine conceives menopause, the implications of the Women‘s Health Initiative Studies and the need to develop a critic attitude before adopting foreign doctrines, technologies and drug therapies.

  18. Hipertensión arterial, menopausia y compromiso cognitivo

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    Mildren del Sueldo

    2018-01-01

    Full Text Available Resumen: La enfermedad cardiovascular es la primera causa de mortalidad en la mujer en la mayor parte del mundo y pese a esta realidad el riesgo de padecerla continúa siendo subestimado en mujeres. La hipertensión arterial es uno de los principales determinantes de este riesgo y su prevalencia ha incrementado de manera global, especialmente en mujeres después de los 60 años. Si bien la disminución o pérdida de los estrógenos tiene impacto sobre la regulación de la presión arterial, el papel de la menopausia en la patogénesis de la hipertensión arterial durante este período, es controversial. El daño vascular cerebral secundario a hipertensión arterial incrementa el riesgo de desarrollar deterioro cognitivo y/o demencia. La mujer es más susceptible a este daño, dada su mayor expectativa de vida aunada a la pérdida de la acción neuroprotectora de los estrógenos. Esta revisión pretende demostrar los vínculos entre la hipertensión arterial, la menopausia y el compromiso cognitivo en la mujer. Abstract: Cardiovascular Disease (CVD is the first cause of mortality in women in most parts of the world. In spite of this fact, the risk of CVD is still underestimated in women. Hypertension (HTN is one of the main determinants of this risk, and its prevalence has been increasing worldwide, especially in women over the age of 60. Even though the decrease or loss of estrogens has an impact on blood pressure (BP regulation, the role of menopause in the pathogenesis of HTN during this period is controversial. Vascular brain damage secondary to HTN increases the risk of cognitive impairment (CI and/or dementia. Women are more susceptible to these damages due to their longer life expectancy, together with the loss of the neuroprotective effects of estrogens. This review intends to show the relationships between HTN, menopause and CI in women. Palabras clave: Hipertensión arterial, Enfermedad cardiovascular, Mujer, Keywords: Arterial

  19. Significado psicológico, actitudes hacia la menopausia y autoconcepto en mujeres en la etapa adulta media

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    Jiménez Sánchez, Laila María

    2004-01-01

    Esta investigación tuvo como objetivo conocer el significado psicológico, las actitudes hacia la menopausia y el autoconcepto de mujeres de mediana edad, además de comparar estas tres variables en mujeres premenopáusicas y postmenopáusicas. Para llevar a cabo el estudio se aplicó la Técnica de Redes Semánticas Naturales, una Escala de Actitudes hacia la Menopausia y una Escala de Autoconcepto. Los resultados mostraron un significado psicológico negativo de la menopausia, ...

  20. La menopausia como modificadora de la realidad axiológica

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    Castro Jiménez, Rafael Ángel

    2001-01-01

    La menopausia es un acontecimiento vital estresante, influenciada por aspectos biológicos,psicológicos, sociales y familiares de la cultura de la que se procede. La base central de este trabajo se situó en la "Teoría Constructivista" fundamentando la siguiente hipótesis: El período involutivo de la mujer muestra una construccción de la realidad axiológica dependiente tanto de estereotipos socio-culturales, como de enfermedad ginecológica intercurrente en este período, y respondiendo a los sig...

  1. Climaterio y menopausia: importancia de su atención en el nivel primario

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    Miguel Lugones Botell

    1997-10-01

    Full Text Available Se realiza una revisión relacionada con el climaterio y la menopausia donde se relacionan sus bases anatomofisiológicas con los diversos aspectos biológicos, psicosociales, sexuales y con las enfermedades crónicas no transmisibles y el cáncer ginecológico, en la que se resalta la necesidad de una atención diferenciada y especializada, así como integral, de estas mujeres, por la importancia que tiene mejorar la calidad y el estilo de vida para hacer prevención y promoción de salud.A review concerning climateric and menopause is made and their anatomophysiological bases are related to the different biological psychosocial and sexual aspect and to non-communicable chronic disease and gynecological cancer. it is stressed the need of giving these women a diferentiated, specialized and com0prenhensive attention so as to improve their quality of life and their life style and to prevent diseases and promote health.

  2. ¿Qué es la menopausia? (I) Hormonología, sintomatología física y aspectos psicosociales

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    Goberna Tricas, Josefina

    1997-01-01

    Se presenta la primera parte de un artículo más extenso que trata sobre la menopausia en todas sus vertientes. En este número se analizan los procesos fisiológicos que suceden en esta época de la vida de la mujer.

  3. Reproductive and lifestyle factors associated with early menopause in Mexican women Factores reproductivos y de estilos de vida asociados con menopausia temprana en mujeres mexicanas

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    Paola A. Ortega-Ceballos

    2006-08-01

    Full Text Available OBJECTIVE: The purpose of this study was to evaluate the relationship between certain reproductive and lifestyle factors and the occurrence of early natural menopause. MATERIAL AND METHODS: A case/control study was conducted on a basal population of 2 510 women participating in the "Mexican Institute of Social Security health workers cohort study". Cases were defined as those women for whom natural menopause presented by age 47. Information was obtained through a self-administered questionnaire. RESULTS: The risk of early menopause is associated with short menstrual cycles [15 cigarettes/day, OR=2.7 (IC 95% 1.00-7.30], and birth cohorts [>1950, OR=4.09 (IC 95% 2.62-6.39]. COCLUSIONS: The findings of this study suggest that both reproductive and lifestyle factors are significant elements in the occurrence of early menopause in Mexican women.OBJETIVO : Evaluar la relación entre factores reproductivos, estilo de vida y la ocurrencia de menopausia natural temprana. MATERIAL Y MÉTODOS : Un estudio de casos y controles fue conducido en una población basal de 2 510 mujeres participantes en la "Cohorte de trabajadores IMSS". Los casos fueron definidos como aquellas mujeres que presentaron la menopausia natural a los 47 años o menos. La información fue colectada a través de cuestionarios autoapicables. RESULTADOS: El riesgo de menopausia temprana está asociado con ciclos menstruales cortos [15 cigarros/día, RM=2.7 (IC 95% 1.00-7.30], y cohorte de nacimiento [>1950, RM=4.09 (IC 95% 2.62-6.39]. CONCLUSIONES: Los hallazgos sugieren que tanto factores reproductivos como de estilo de vida son elementos significantes en la ocurrencia de la menopausia a edad temprana en mujeres mexicanas.

  4. Conhecimento e significado cultural da menopausa para um grupo de mulheres Conocimiento y significado cultural de la menopausia para un grupo de mujeres Menopause knowledge and experience for a group of women

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    Gabriela Maria C Costa

    2008-03-01

    Full Text Available Este estudo etnográfico, realizado junto a um grupo de mulheres, teve como objetivo verificar o nível de conhecimento sobre a menopausa e compreender como ocorre a vivência deste estágio biológico próprio do sexo feminino. Para a coleta dos dados, usou-se a observação participante, a entrevista, mediante uso de gravador, além de desenhos previamente reproduzidos. A análise foi efetuada com base nos pressupostos teóricos, de método etnográfico e de alguns pressupostos do interpretativismo biográfico. Das narrativas coletadas, extraíram-se as categorias e os temas culturais. Assim, foi possível verificar que o processo da menopausa era entendido como resultante de uma construção singular, estando integrado a uma rede de significados, instituídos pelo grupo, os quais condicionam o conhecimento e a vivência dentro de determinados padrões culturais, entre eles, o fato de que a menopausa significa deixar de ser mulher.Este estudio etnográfico, realizado con un grupo de mujeres, tuvo como objetivo verificar el nivel de conocimiento sobre la menopausia y comprender cómo ocurre la vivencia de este período biológico propio del sexo femenino. Para la recolección de los datos, se usó la observación participante, la entrevista, mediante el uso de una grabadora, además de dibujos previamente reproducidos. El análisis se llevó a cabo con base en las premisas teóricas, del método etnográfico y de algunos del interpretativismo biográfico. De las narrativas recolectadas, se extrajeron las categorías y los temas culturales. De este modo, fue posible verificar que el proceso de la menopausia era entendido como resultado de una construcción singular, estando integrado a una red de significados, instituidos por el grupo, los cuales condicionan el conocimiento y la vivencia dentro de determinados patrones culturales, entre ellos, el hecho de que la menopausia significa dejar de ser mujer.This ethnographic study is aimed at

  5. Flipped classroom. Claves para su puesta en práctica

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    José Sánchez Rodríguez

    2017-07-01

    Full Text Available Comienza este trabajo haciendo ver la necesidad de la incorporación de las tecnologías en la enseñanza; posteriormente se realiza una descripción básica de evidencias de la metodología tradicional; más adelante se describe qué son las clases invertidas y se indican fases y estrategias para su puesta en práctica. Se dedica un apartado a inconvenientes descritos en diferentes investigaciones y se abordan los beneficios que estudiantes y profesores puede alcanzar al hacer uso de este tipo de metodología. Se muestra con posterioridad resultados acerca de la aplicación práctica de las clases invertidas, como que los alumnos consideran que promueve la comprensión y aplicación de los conceptos clave, que los materiales les ayudan a preparar cada sesión de clase, aprender a su propio ritmo, preparar los exámenes y que mejoran su aprendizaje en general. Manifiestan su preferencia por las clases invertidas e indican el aumento de la eficacia/efectividad del tiempo de clase. Se concluye en la apreciación de beneficios significativos con la aplicación de las clases invertidas, desde permitir a los profesores identificar los conceptos que no comprenden sus estudiantes hasta dedicar tiempo en clase para el desarrollo de habilidades cognitivas de orden superior de los estudiantes.

  6. Influencia de la menopausia en la prevalencia de la resistencia a la insulina en la población urbana de Talavera de la Reina

    OpenAIRE

    Asensio Nieto, María Remedios

    2016-01-01

    La menopausia es una etapa en la vida de la mujer que se produce como consecuencia del agotamiento de los folículos ováricos. En éstos se producen las hormonas sexuales femeninas: estrógenos y progesterona que van a disminuir considerablemente en esta etapa y que por reducción del mecanismo de feed back negativo producen elevación de las hormonas gonadotropas: FSH y LH. El descenso de estrógenos, tiene como consecuencia una serie de alteraciones que repercutirán en la calidad de vida de la mu...

  7. Puesta al día de la colaboración científico-técnica española del I.E.T.C.C. con Iberoamérica en el campo del cemento y del hormigón

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    Calleja, José

    1981-03-01

    Full Text Available Not available

    Se trata de actualizar la exposición de la labor llevada a cabo durante los años 1978 a 1980 por el autor de este trabajo en Brasil y en Argentina, a invitación personal de entidades oficiales de ambos países relacionadas con los campos de la docencia, de la ingeniería, dela construcción y de sus materiales. Labor consistente en el desarrollo de cursos, conferencias, coloquios y mesas redondas sobre temas relativos a la tecnología y a la durabilidad del cemento y del hormigón, y al empleo racional de los cementos en los diferentes tipos de obras, como solución a los problemas que el hormigón puede presentar en ellas. Dicha labor se presenta en forma resumida, sin perjuicio de que una buena parte de ella se ofrezca desarrollada in extenso en otras publicaciones técnicas.

  8. Corrosión de refractarios: Puesta a punto de un ensayo de laboratorio

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    Caro, I.

    1998-10-01

    Full Text Available In the scope of refractories the characterisation of its behaviour faced with slag corrosive attacks that can appear during service has a great significance. However, satandarized laboratory tests for this characterization are not generally accepted by manufacturers and users of these refractories. The present report shows the development works for an inmersion type corrosion test. This test keeps the samples continuously moving inside the melt slag bath in order to accelerate (never modifying the corrosion mechanisms, since this motion avoids the generation of a “non-active” slag zone all around the samples. The results of the first proofs show the suitability of this test as a laboratory test. It allows to achieve high corrosion levels in a very short time. Also, the ability for testing several samples simultaneously allows to get comparative results with high rapidity and reliability.

    En el campo de los refractarios resulta de gran importancia la caracterización de su comportamiento ante el ataque corrosivo por escorias a que pueden estar sometidos en servicio. Sin embargo no existen ensayos de laboratorio normalizados que sean generalmente aceptados por los fabricantes y usuarios de estos refractarios. En este artículo se exponen los trabajos de puesta a punto de un ensayo de corrosión por inmersión. En dicho ensayo, las probetas se mantienen en continuo movimiento dentro del baño con objeto de acelerar los mecanismos de corrosión (nunca modificarlos que aparecen en servicio, al evitar la formación de un zona de escoria “inactiva” al rededor de dichas probetas. Los resultados de las pruebas realizadas muestran la idoneidad del ensayo propuesto como ensayo de laboratorio, ya que permite obtener grandes niveles de corrosión en tiempos muy cortos. Además la capacidad para ensayar varias probetas de manera simultánea permite obtener resultados comparativos muy rápidamente y de forma muy fiable.

  9. Menopausia, una endocrinopatía: Atrofia Urogenital y Trastornos de la Sexualidad

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    Roberto Vergara Tamara

    1995-08-01

    Full Text Available

    La atrofia urogonital causada por el estímulo deficiente estrogenito se manifiesta principalmente en la vagina, donde la mucosa sufre un adelgazamiento gradual que permite el predominio de células parabasales e intermedias propias del hipoestrogenismo, volviéndolo altamente sensible al trauma y la infección.

    Clínicamente se traduce en disminución de la humedad vaginal, sensación de llenura en el intróito, ruptura fácil de capilares vaginales con aparición de petequias, irritación, prurito y dispareunia.

    A nivel del endometrio se pueden presentar uno de los siguientes cambios: proliferación débil, atrofia senil, hiperplasia quística, hiperplasia adenomatosa, neoplasia omás raramente trastorno secretor; cambios que corresponden clínicamente a intervalos oligomenorreicos interpuestos por episodios hemorrágicos que finalmente terminan en amenorrea definitiva. En casos de sangrados postoriores ameritaría estudios anatomopatológicos de control obtenidos por biopsia o legrado uterino. Otros cambios que se presentan en el útero incluyen la pérdida de tono en sus ligamentos y elementos de sostén así comola disminución del cuello y su secreción.

    A nivel urinario la pérdida del tono uretral cursará con prolapso de la mucosa a través del meato, uretritis ahacteriana recurrente manifestada por poliaquiuria, disuria de ardor e incluso incontinencia urinaria de esfuerzo.

    Los cambios descritos anteriormente, hacen que la sexualidad femenina sea perturbada al presentarse dispareunia, disminuyendo de ritmo sexual y libido de la mujer haciendo su vida de pareja difícil y caótica. Se ha descrito también que la disminución de estrógenos produce ansiedad, depresión, tensión e irritabilidad al no permitir la disociación del triptófano de la albúmina para así formar sustancias tales como la hidroxitriptamina que participa en el mejoramiento del estado de ánimo. Esta etapa será de adaptación difícil y

  10. Autocuidado de mujeres en etapa de menopausia en Toluca, Mexico Autocuidado de mulheres na etapa da menopausa em Toluca, México Self care of women in the menopause stage in Toluca, Mexico

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    María Dolores Martínez Garduño

    2008-03-01

    Full Text Available La mujer en etapa de menopausia está expuesta a factores de riesgo que disminuyen con prácticas de autocuidado. El objetivo fue identificar prácticas de autocuidado en la menopausia. Estudio cuantitativo, exploratorio, con muestra probabilística aleatoria simple, utilizando EPI INFO 2000, con 95% nivel de confianza, 5% máximo de error, con 354 mujeres. Se observó déficit de autocuidado principalmente en hábitos alimentarios, apreciándose sobrepeso y obesidad (27%; el ruido es el factor que interfiere con el sueño, el promedio de sueño fueron 5 a 7 horas; 40% no realiza ejercicio; 17.9% no realiza detección de cáncer cérvico uterino, 37.7% no practica autoexploración de mama, sin seguridad social 52.3%; asisten al médico solo cuando están enfermas. Las manifestaciones frecuentes en climaterio son sangrados irregulares, sofocos, cansancio y dislíbido. No existe suficiente información en este grupo de mujeres, reto que debe asumir la enfermera en su función de educación para la salud.A mulher na menopausa está exposta a fatores de risco que diminuem com o autocuidado. O objetivo foi identificar práticas de autocuidado na menopausa. Estudo quantitativo, exploratório, com mostra de probabilidade aleatória simples, utilizando EPI INFO 2000, com 95% limite de confiança, 5% máximo de erro, com 354 mulheres. Foi observado déficit de autocuidado principalmente em hábitos alimentares, notando sobrepeso e obesidade (27%; o ruído é o fator que interfere no sono, a média de sono foi de 5 a 7 horas; 40% não realiza exercício; 17,9% não realiza exame para câncer cervical uterino, 37,7% não pratica auto exame da mama, sem seguro social. 52,3% só procuram médico quando estão doentes. As manifestações freqüentes no climatério são sangramentos irregulares, sufoco, cansaço e falta de libido. Não existe informação suficiente neste grupo de mulheres, sendo a enfermeira quem deve assumir a função de educadora de sa

  11. Puesta en valor de algunas construcciones del ing. Salamone

    OpenAIRE

    Traversa, Luis P.; Di Maio, Ángel A; Longoni, René

    2003-01-01

    En Enero del año 2002, la Legislatura bonaerense sancionó la ley n° 12.854, que declaró Patrimonio provincial a la obra pública municipal del ingeniero Francisco Salamone (1898-1959), construída durante el Gobierno de Manuel Fresco (1936-1940). De casi un centenar de construcciones y proyectos realizados dentro de lo que se denominó Plan de Obras Públicas Municipales, en más de 20 localidades pertenecientes a 16 Partidos del interior bonaerense, al menos, una treintena de ellas son signifi...

  12. Capital psicológico: una puesta al día

    OpenAIRE

    Salessi, Solana Magalí

    2017-01-01

    En el marco de la psicología organizacional positiva, el capital psicológico ha sido definido como un estado psicológico positivo, caracterizado por tener confianza para asumir y llevar a cabo con éxito una tarea desafiante; hacer una atribución positiva sobre el resultado de la misma; perseverar en la búsqueda de los objetivos, redireccionando los esfuerzos hacia las metas en caso de ser necesario, y a pesar de estar acosado por los problemas, fortalecerse en la adversidad para alcanzar el é...

  13. Puesta al día en el manejo de las dislipidemias

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    Kunstmann F. Sonia, DRA

    2012-11-01

    Full Text Available Las dislipidemias juegan un rol muy importante en la patogénesis de la enfermedad ateromatosa. El manejo debe basarse en el riesgo individual, con metas de colesterol LDL según las guías internacionalmente aceptadas, que corresponde a colesterol LDL menos de100mg/dl en pacientes con enfermedad ateroesclerótica conocida o de alto riesgo. Los fibratos son drogas de elección en el manejo de las hipertrigliceridemias. Las estatinas han demostrado ser muy eficientes en reducir colesterol total, colesterol LDL y también, aunque en menor grado, en reducir triglicéridos y aumentar colesterol HDL. Están indicadas como primera línea en pacientes de alto riesgo, con enfermedad ateromatosa, o en prevención secundaria. Se discuten otros fármacos en el manejo de las dislipidemias.

  14. Un repaso por el origen y una mirada puesta en el presente. ¿Qué tiene para ofrecernos el periodismo digital?

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    Lic. Mónica Tejera Cruz

    2002-01-01

    Full Text Available El fenómeno de Internet no pasa inadvertido a ningún mortal. Mucho menos cuando se dedican al mundo de la comunicación. Para los periodistas, la aparición de la Red y el desarrollo de la Word Wide Web ha venido a coquetear con su ansia de comunicar, informar, expresar; a fin de cuentas, transmitir mensajes. El desarrollo de la tecnología ha puesto en bandeja de plata un nuevo soporte que permite llegar a las personas a través de los ordenadores y abre un universo de posibilidades para explotar, pero que al mismo tiempo hay que entender y asimilar. Un repaso hacia el origen de un nuevo medio con el que ya convivimos y una mirada puesta en el presente de su desarrollo vertiginoso.

  15. menopausia: tendencias y controversias

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    Georgina Sánchez-Ramírez

    2008-01-01

    Full Text Available Con la finalidad de contribuir a una actualización del estado del arte y bajo una perspectiva crítica, se realizó una revisión bibliográfica sobre las indicaciones terapéuticas de la Terapia de Reemplazo Hormonal, así como las diferentes controversias, usos y beneficios durante la pre y la posmenopausia. Los beneficios demostrados hasta el momento de la THR, son la corrección de la atrofia urogenital y/o vaginal y la disminución de las molestias de los síntomas vasomotores (los sofocos o bochornos, los vértigos, las sensaciones de hormigueo en las extremidades y palpitaciones y el aumento de la DMO que puede prevenir las fracturas de cadera y vértebras. Las dosis recomendadas para la administración de THR han variado con el tiempo, cobrando fuerza últimamente la corriente clínica que recomienda dosis menores que las utilizadas en años anteriores, ya que se están demostrando los mismos beneficios, disminuyendo los riesgos asociados a su uso, lo cual requiere una actualización en la información que manejan tanto los médicos como las usuarias. Existe además la necesidad de ampliar las investigaciones sobre el uso de otro tipo de terapias para aliviar la sintomatología climatérica diferente a la THR

  16. EL DISEÑO DE ITINERARIOS TURÍSTICOS PARA LA PUESTA EN VALOR DEL PATRIMONIO TERRITORIAL. LAS ACEQUIAS DE CAREO EN EL PARQUE NACIONAL DE SIERRA NEVADA

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    María José Prados Velasco

    2011-01-01

    Full Text Available Este artículo propone el diseño de itinerarios turísticos apoyados en el sistema de acequias de careo en la cuenca del Guadalfeo, en la vertiente sur del Parque Nacional de Sierra Nevada. Las acequias de careo son elementos claves empleados en la Antigüedad para la funcionalidad de los espacios agrarios de alta montaña en zonas semiáridas. En la actualidad constituyen elementos patrimoniales de primer orden que contribuyen al mantenimiento de los paisajes culturales. El objetivo central es el de vincular la sostenibilidad en la práctica del turismo, con la puesta en valor de elementos patrimoniales y paisajísticos.

  17. El granito como piedra de construcción en Madrid: durabilidad y puesta en valor

    OpenAIRE

    Freire Lista, David Martín

    2016-01-01

    La tesis titulada “El granito como piedra de construcción en Madrid: durabilidad y puesta en valor” está estructurada en 6 artículos científicos publicados, 1 aceptado y otro en revisión, en diferentes revistas internacionales indexadas y un capítulo de un libro divulgativo. El uso de la piedra de construcción ha estado determinado por la proximidad de los recursos geológicos. Los materiales pétreos que históricamente se han utilizado en la Comunidad de Madrid provienen del Sistema Central Es...

  18. Dramatic Strategies Made Clear: The Feminist Politics in Griselda Gambaro's Puesta en claro

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    Sandra Cypess

    1996-01-01

    Full Text Available In this essay I explore the feminist aspects of Puesta en claro , written in 1974, when Griselda Gambaro was not yet considered a writer who paid attention to feminine issues. Yet to the extent that Gambaro always focuses on the constellation of problems relating to power relations, she is including feminine and feminist issues in her text, and continues a tradition many critics relate to Sor Juana Inés de la Cruz, as I shall argue in my conclusion. Seen within the trajectory of Gambaro's dramaturgy, Puesta en claro , as a play from the 1970s is also remarkable in showing a change in the typical pattern of victimization for her characters. Her audience sees that it is possible for the victims to renounce their passivity and rebel. Moreover, she embodies that message in the sign of a blind, apparently defenseless, domesticated, dominated woman. I suggest that in the creation of the blind woman Gambaro comments on the significance of the male gaze, not as an inherent attribute, but as a controlling agent derived from the patriarchal system. She also shows that the private spaces of the domestic sphere to which women are relegated within the patriarchy can be reconstituted as a site of power.

  19. Methodological issues related to studies of lead mobilization during menopause Consideraciones metodológicas relacionadas con estudios sobre movilización de plomo durante la menopausia

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    Gertrud S. Berkowitz

    1999-11-01

    Full Text Available While there has been a substantial decline in lead exposure in the United States during the past two decades, mobilization of existing lead stored in bone potentially represents an important endogenous source of exposure for menopausal women. It has been hypothesized that lead may be mobilized from skeletal stores during conditions of high bone turnover, such as during menopause. However, such mobilization has not been documented in prospective studies. This discussion is focussed on some of the methodological difficulties to be anticipated in longitudinal studies of lead mobilization specific to menopause and the issues that need to be taken into account when evaluating the results of such studies. To evaluate whether lead mobilization occurs during menopause, a prospective repeated measures design is needed using X-ray fluorescence analysis of lead in bone and serial measurements of blood lead. Potential confounders and effect modifiers also need to be taken into account in the statistical analysis.Mientras que la exposición a plomo ha declinado sustancialmente en Estados Unidos durante las dos décadas pasadas, la mobilización del plomo almacenado en los huesos representa potencialmente una importante fuente de exposición endógena en mujeres menopáusicas. No obstante, tal movilización no ha sido documentada por estudios prospectivos. La presente discusión se enfoca en algunas de las dificultades metodológicas a se anticipadas en estudios longitudinales de mobilización de plomo específicamente en la menopausia, y los aspectos que necesitan ser considerados cuando se evalúan los resultados de tales estudios. Para evaluar si durante la menopausia el plomo es mobilizado, se requiere de un diseño prospectivo con mediciones repetidas utilizando análisis de fluorescencia de rayos-X para determinar el plomo en hueso y una serie de mediciones de plomo en sangre. Los potenciales confusores y modificadores del efecto también deben tomarse

  20. Transient analysis for grounding systems considering the ground ionization; Analisis transitorio de sistemas de puesta a tierra considerando la ionizacion del suelo

    Energy Technology Data Exchange (ETDEWEB)

    Salgado Salgado, Luis Alberto

    2008-06-15

    sistema de puesta a tierra. Lo anterior origina el fenomeno de ionizacion del suelo, lo cual provoca una disminucion de la impedancia de la red de tierra, modificando su comportamiento. En este trabajo de tesis, se presenta un modelo computacional para evaluar el comportamiento transitorio de un sistema de puesta a tierra, sujeto a corriente de magnitud y frecuencia tales que dan lugar al fenomeno de ionizacion del suelo. Modelo esta basado en la teoria de lineas de transmision multiconductoras y el analisis transitorio de la red de tierra se efectua en el dominio de la frecuencia. La conversion al dominio del tiempo se realiza a traves de la Transformada Rapida de Fourier Inversa. Con el modelo desarrollado se analizaron varios casos de estudio con electrodos verticales y mallas de puesta a tierra de diferentes dimensiones. Para los casos de estudio se consideraron diferentes magnitudes de campo electrico critico, suelos con diferentes valores de resistividad y se utilizaron corrientes con distintos valores de magnitud y frecuencia. Los resultados obtenidos que aqui se presentan, fueron analizados y validados con resultados de otros modelos y mediciones reales publicadas en la literatura.

  1. Respuesta transitoria de las puestas a tierra en la protección contra rayos. Software GTIERRAS

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    Héctor David Gómez Montoya

    2006-01-01

    Full Text Available Se usa un programa computacional desarrollado en Matlab (GTIERRAS que implementa un modelo de base electromagnética, para determinar la impedancia de puesta a tierra de configuraciones arbitrarias y su comportamiento ante excitaciones tipo impulso. Impedancia, corrientes y voltajes, u otras variables eléctricas de sistemas de puesta a tierra se pueden presentar en el dominio de la frecuencia o del tiempo usando la transformada rápida de Fourier. La base general del modelo considerado se usa para valorar no sólo sobretensiones por descargas atmosféricas, sino también, otros transitorios típicos asociados con problemas de compatibilidad electromagnética. Los resultados muestran la influencia de algunas variables en la respuesta del sistema de puesta a tierra y revelan algunas diferencias que se deben tener en cuenta cuando se aplican criterios basados en el desempeño a baja frecuencia, para esfuerzos impulsivos de puestas a tierra. Adicionalmente, se presentan ejemplos de cálculo y comparaciones con resultados de otros autores para ilustrar algunos comportamientos que de ninguna manera son evidentes. Se investiga además, el efecto de la geometría de los electrodos y la resistividad del suelo, así como del frente de onda y el número de puntos de inyección. También se presentan resultados de tensiones de contacto y de paso, así como, el estudio de un sistema de protección contra rayos como ampliación de las aplicaciones del modelo. Finalmente, se derivan algunas conclusiones útiles para el diseño de sistemas de puesta a tierra.

  2. Influencia de la edad y la menopausia en el origen de la Dehiscencia del Canal Semicircular Superior

    OpenAIRE

    Fernández Castaño, Carmen

    2014-01-01

    145 p. : il., col. La dehiscencia del canal semicircular superior (DCSS) es una forma de vestibulopatía periférica caracterizada por la ausencia de cobertura ósea en el techo de dicho canal, de este modo su luz interior queda anormalmente abierta al espacio intracraneal en contacto directo con la meninge que tapiza el suelo de la fosa media. Esta dehiscencia se limitaría a la cápsula ótica y no afectaría, aparentemente, al laberinto membranoso. Su presentación clínica es variable, siendo ...

  3. Códigos QR: Museografía Nómade para la puesta en valor del patrimonio cultural

    Directory of Open Access Journals (Sweden)

    Lilian Meneses Plaza

    2014-07-01

    Full Text Available En la última década el sector cultural se ha apropiado de los avances científicos y las nuevas tecnologías para crear imágenes, sonidos, objetos y experiencias comunicacionales digitales que hacen más atractivo el patrimonio, mejorando la oferta de los museos y sitios patrimoniales desde el punto de vista turístico, cultural y educativo. Entre los medios que podemos mencionar destacan los museos virtuales, salas de exhibición 3D, audio-guías, códigos QR y aplicaciones para teléfonos móviles, entre otros, lo que deriva en una oferta novedosa y eficiente para la puesta en valor del patrimonio cultural. En el artículo se propone una metodología orientativa basada en la Interpretación del Patrimonio y la Museografía Nómada, para desarrollar una herramienta de gestión patrimonial apoyada en el uso de códigos QR. En esta propuesta se utilizó como referente la Ciudad de Valparaíso - Sitio Patrimonio de la Humanidad- dado que posee aptitudes de museo al aire libre, alta demanda por el turismo cultural y, además, constituye un lugar emblemático para la gestión patrimonial chilena en espacios urbanos habitados. Abstract From last decade that the cultural sector has taken the scientific advances and the new technologies to create images, sounds, objects and digital communication experiences that make the heritage more attractive, improving the museums and patrimonial sites offer to the tourism, the culture and education. Some the supports that we can mention are the virtual museums, 3D rooms, sonorous guide, QR codes and app for mobiles, etc.,presenting a new and efficient offer for putting in value the cultural heritage. In this article I propose a methodology guide based on the Heritage Interpretation and the Nomad Museography, to develop a heritage management tool about QR codes. In this methodology I use Valparaíso as example -World Heritage Site- because possesses aptitudes of outdoors museum, a high cultural tourism demand

  4. Los nuevos desafios de la puesta en práctica de las políticas de saneamiento ambiental

    Directory of Open Access Journals (Sweden)

    Horacio Alejandro Chamizo Garcia

    2009-01-01

    del saneamiento ambiental desde una perspectiva compleja. Así mismo, se evidencia el papel de las relaciones de agencia en condiciones de cuasimercados y su influencia en la conformación de redes de actores. Los hallazgos explican integradamente los principales factores que influyen durante la puesta práctica políticas públicas de gran relevancia para la salud de la población y la reducción de inequidades sociales.

  5. Lope de Vega y el poder monárquico: una puesta al día

    Directory of Open Access Journals (Sweden)

    Marcella Trambaioli

    2012-04-01

    Full Text Available The essay tries to outline the ‘state-of-the-art’ about the relationship between Lope deVega and the contemporary monarchic power. After some early studies merely concerning the politicaltheory present inside the texts, the scholars have started to analyze his historical theater in relation withhis construction of the Spanish Empire mythology, even if only recently some of them have realized thatthis glorification of both the Austrias and the Spanish nobles gets on with Lope’s self-promotionstrategies, in order to obtain an official post at court. On the contrary, some scholars, mainlyAnglosaxon, have tried to interpret his works in a critical and satyrical perspective, without consideringthe necessary contextualization of his theater. The reception theory may help studying this controversialmatter, only if it tries to match in the right way both the historical and cultural context of the authorand the cultural background of the contemporary audience.

  6. Menopausia, hipertensión arterial y terapia de reemplazo hormonal Menopause, blood hypertension and hormone replacement therapy

    Directory of Open Access Journals (Sweden)

    Daysi Navarro Despaigne

    2003-04-01

    Full Text Available Para evaluar la influencia de la terapia de reemplazo hormonal (THR sobre el síndrome climatérico (SC y los niveles de tensión arterial en mujeres posmenopáusicas con hipertensión arterial (HTA, se realizó un ensayo terapéutico abierto, el cual incluyó 45 mujeres no obesas con HTA ligera/moderada. En cada mujer se evaluó la evolución de los síntomas climatéricos y de los niveles de tensión arterial, así como los efectos indeseables a la THR. Como medicamento las pacientes recibieron Estradiol 2mg + Levonorgestrel 1 mg por día durante 12 meses. Durante la THR disminuyeron los síntomas climatéricos, en particular los vasomotores (de 86,6 a 10 % y los genitourinarios (de 56,7 a 15 %. En la totalidad de las mujeres existió estabilidad en los niveles de tensión arterial. En 5 mujeres hubo necesidad de incrementar la dosis de medicamentos antihipertensivos. En el resto esta se mantuvo o disminuyó. Como efectos indeseables se reportó sangramiento vaginal, mastodinia, cefalea, vasculitis e isquemia del quinto dedo del pie. Las dos últimas pacientes debieron suspender el tratamiento y se presentaron al sexto mes de haber iniciado la THR. En conclusión, en mujeres de edad mediana con hipertensión arterial la THR mejora el síndrome climatérico sin empeorar los niveles de tensión arterial.To evaluate the influence of hormone replacement therapy on the climateric syndrome (CS and the blood pressure values in postmenopausal women with hypertension, an open therapeutic assay was carried out, which included 45 non-obese women with slight/moderate hypertension. The course of the climateric symptoms and the blood pressure levels as well as the adverse effects of HRT were evaluated in every woman. The patients took Estradiol 2mg plus Levonorgestrel 1 mg per day for 12 months as drug therapy. During the application of the HRT, the climateric symptoms, particularly vasomotor (from 86,6 to 10% and genitourinary (from 56,7 to 15% decreased

  7. Aspectos prácticos para la regulación y puesta a punto de una sembradora

    OpenAIRE

    García Ramos, Francisco Javier; Diezma Iglesias, Belen

    2005-01-01

    La labor de siembra es clave dentro de cualquier proceso productivo. Buena parte del éxito de dicha labor depende de la elección de una sembradora adecuada y de su correcta regulación y puesta a punto. Por lo tanto, es vital realizar una revisión de la máquina antes de la campala de siembra y es aquí donde entra en juego la facilidad de manejo y regulación del equipo.

  8. Cableado y puesta en marcha de puesto de laboratorio de automatización : mecanizado de taladro automatizado

    OpenAIRE

    Tena Fernández, Juan Diego

    2011-01-01

    El Proyecto Fin de Carrera titulado: “Cableado y puesta en marcha de puesto de laboratorio de automatización. Mecanizado de taladro automatizado”, trata sobre la construcción de un nuevo puesto de laboratorio para las practicas del área de automatización industrial de la Universidad Carlos III. El puesto de laboratorio consiste en una maquina-herramienta que realiza taladros de forma automática. El puesto está formado por una armario eléctrico y una maqueta. En el armario eléctrico se encuent...

  9. Una metodología interdisciplinaria, la puesta en turismo de un área natural protegida y habitada

    Directory of Open Access Journals (Sweden)

    Kelly Escobar Jiménez

    2007-11-01

    Full Text Available Se pretende en este artículo, primero, mostrar pautas de la investigación interdisciplinaria para la puesta en turismo de un espacio habitado de alto valor ecológico (ehave, luego esbozar algunas consideraciones teóricas para el análisis de la participación comunitaria en los proyectos de desarrollo turístico, y por último intentamos hacer una reflexión sobre la aplicación de estos elementos teóricos y metodológicos en el estudio diagnóstico de la puesta en turismo de la vipis. En la vipis se utiliza el ecosistema de manglar como un puente entre los diferentes actores del parque natural y como un vínculo entre las diferentes disciplinas involucradas en el proyecto de investigación –economía, antropología, biología, arquitectura y turismo –. Todo esto con la intensión de hacer un estudio interdisciplinario para proponer alternativas de desarrollo respetuosas con las comunidades locales y el medio ambiente de la región.

  10. La educación puesta a prueba en un espacio de reclusión

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    Gilles Chantraine

    2013-04-01

    Full Text Available Recién llegados al paisaje carcelario francés, los establecimientos penitenciarios para menores (EPM son fruto de la voluntad de convertir los espacios de reclusión destinados a jóvenes de entre 13 y 18 años en espacios propiamente “educativos”, al objeto de dar respuesta a la falta de continuidad socioeducativa de los menores presos de los quartiers mineurs ubicados en las prisiones de adultos. Basada en una investigación monográfica realizada en dos EPM que mezcla observaciones directas de la vida cotidiana de la reclusión con entrevistas semiestructuradas hechas al conjunto de actores del EPM.Esta contribución está basada en una investigación monográfica hecha en dos EPM, que mezcla observaciones directas de la vida cotidiana de la reclusión con entrevistas semidirectivas realizadas al conjunto de actores del EPM; su objetivo es analizar la forma adoptada por las prácticas educativas en estos establecimientos y su entrelazamiento con el orden penitenciario. Una vez recordados algunos elementos de contexto relativos a las recientes transformaciones de la justicia de menores en Francia, propondremos una mirada simétrica de las prácticas de los educadores de la PJJ (Protección Judicial de la Juventud y de los vigilantes penitenciarios.Este análisis simétrico nos llevará a demostrar que, aun poniendo de manifiesto una apertura relativa de la institución carcelaria, el EPM sigue marcado por una supremacía de las lógicas securitarias sobre las lógicas educativas, que dibuja una articulación original entre ambas lógicas: en el EPM ya no se trata únicamente de constreñir los cuerpos de los presos a someterse al orden penitenciario, sino también de una labor de movilización de las subjetividades reclusas mediante un trabajo “educativo” de persuasión sobre la pertinencia del orden penitenciario.

  11. La fotografía de moda y la puesta en escena a través de la obra de Deborah Turbeville

    Directory of Open Access Journals (Sweden)

    Beatriz Guerrero González-Valerio

    2015-01-01

    Full Text Available La relación entre moda y fotografía ha sido desde siempre muy estrecha y fructífera. Dado que la moda es un producto comercial, debe ser presentada al público, tiene que comunicarse y venderse. En este sentido, las fotogra-fías de moda son muy efectivas porque establecen una comunicación inmediata con el espectador. Sin embargo, el fotógrafo de moda no sólo crea imágenes bellas para vender. A través de sus relatos, el fotógrafo sugiere y hace soñar, propone para hacer sentir y para transmitir una sensación. A la hora de crear un determinado ambiente, la fotografía de moda entra en relación y bebe de otras artes, como la pintura, la arquitectura, el teatro o el cine. Éste es el caso de la fotógrafa que nos ocupa, Deborah Turbeville. Partiendo de este contexto, el presente artículo estudiará y analizará la fotografía de moda realizada por Deborah Turbeville, recientemente fallecida a los ochenta y un años de edad. A lo largo de su dilatada carrera, la mencionada fotógrafa fue capaz de crear su propia visión, a través de unas puestas en escena llenas de poesía y misterio. El principal objetivo será tratar de establecer la concepción personal de la fotografía de moda en Deborah Turbeville y detectar, así mismo, cuáles son los elementos que subyacen en sus imágenes, además de la idea de elegancia y de belleza imperecedera. Se tratarán de establecer las analogías entre las imágenes de Deborah Turbeville y la fotografía pictorialista. La metodología se basa en la localización y recopilación de fuentes documentales. Dentro de las fuentes primarias, se estudian las obras publicadas hasta la fecha con las imágenes de Deborah Turbeville, especialmente la última publicación, Deborah Turbeville: The Fashion Pictures, Rizzoli, 2011. 

  12. EL ITINERARIO COMO HERRAMIENTA PARA LA PUESTA EN VALOR TURÍSTICO DEL PATRIMONIO TERRITORIAL

    OpenAIRE

    Alfonso M. Doctor

    2011-01-01

    Se presentan los antecedentes, desarrollo y avance de resultados del proyecto de investigación «Articulación de los recursos patrimoniales turísticos y aplicación de la tecnología SIG a su planificación y gestión» (Proyecto A/017070/08, financiado durante las anualidades 2009 y 2010 por la Agencia Española de Cooperación Internacional al Desarrollo, AECID, del Ministerio de Asuntos Exteriores), desarrollado por un equipo conjunto de las universidades Austral de Chile, Católica de Salta (Argen...

  13. Construcción y puesta en marcha de una impresora 3D modelo Rostock

    OpenAIRE

    Ponce Antolín, Miguel

    2014-01-01

    Proyecto dedicado a documentar la construcción de una máquina de prototipado rápido por deposición de material fundido o impresora 3D. El modelo construido, denominado como Rostock, es un ejemplo de máquina de cinemática paralela de bajo coste. Esta arquitectura permite alcanzar mayores aceleraciones y velocidades. Además, proporciona una mayor estabilidad al cabezal impresor y dobla la altura de impresión en comparación con las impresoras de bajo coste más difundidas. Este ...

  14. EL ITINERARIO COMO HERRAMIENTA PARA LA PUESTA EN VALOR TURÍSTICO DEL PATRIMONIO TERRITORIAL

    Directory of Open Access Journals (Sweden)

    Alfonso M. Doctor

    2011-01-01

    Full Text Available Se presentan los antecedentes, desarrollo y avance de resultados del proyecto de investigación «Articulación de los recursos patrimoniales turísticos y aplicación de la tecnología SIG a su planificación y gestión» (Proyecto A/017070/08, financiado durante las anualidades 2009 y 2010 por la Agencia Española de Cooperación Internacional al Desarrollo, AECID, del Ministerio de Asuntos Exteriores, desarrollado por un equipo conjunto de las universidades Austral de Chile, Católica de Salta (Argentina, Guadalajara (México, Pablo de Olavide, Sevilla y Huelva (España.

  15. SIMULACION DE LA PUESTA EN MARCHA DE UN REACTOR DE BIOPELÍCULA ANAEROBIA TIPO INTERCAMBIADOR DE CALOR

    Directory of Open Access Journals (Sweden)

    Ramiro Escalera Vásquez

    2009-01-01

    Full Text Available Se ha desarrollado un  modelo de reactor que considera la separación de fases microbianas dentro de un reactor anaerobio tipo intercambiador de calor, donde las bacterias acidogénicas predominan en la masa líquida recirculante y las heteroacetogénicas y metanogénicas lo hacen en la biopelícula adherida a las paredes. El modelo considera también las resistencias difusionales a la transferencia de masa ocasionadas por la capa laminar y la biopelícula. También se consideran las reacciones paralelas y consecutivas propias de la degradación anaerobia de compuestos orgánicos fácilmente biodegradables, por ejemplo, residuos industriales de altas concentraciones de carbohidratos. El modelo de reactor y las ecuaciones pseudo-analíticas para la estimación de los factores de efectividad, desarrolladas para otro tipo de bioreactores anaerobios tales como lechos empacados y fluidizados, pueden utilizarse para estimar la eficacia y evaluar el funcionamiento de un Reactor de Biopelícula Anaerobia tipo Intercambiador de Calor (RBAIC . En este trabajo se ha verificado que los resultados del modelo concuerdan con los resultados experimentales de la eficacia y funcionamiento del RBAIC, dentro del periodo de puesta en marcha.

  16. La transferencia de políticas globales de género y su puesta en agenda

    Directory of Open Access Journals (Sweden)

    Paula Ruíz

    2015-06-01

    Full Text Available Desde la década de los ochenta, el género se incorpora como categoría analítica e  interpretativa que ha venido evolucionado tanto en su desarrollo teórico y metodológico como político y social. En el ámbito académico, por ejemplo, su análisis se ha abordado como una construcción cultural y social, lo cual ha permitido ampliar su espacio de discusión y de estudio como método de investigación dentro de las ciencias sociales. El feminismo, como movimiento social, ha impactado en la construcción de políticas en pro del empoderamiento de la mujer, impulsando a los Estados a suscribir acuerdos que paulatinamente, en la mayoría de sociedades, han mejorado su situación en los distintos ámbitos. La movilización internacional sobre temas blandos de la agenda internacional ha llevado a la transferencia de políticas de un sistema a otro y a su puesta en agenda a nivel local. En este artículo se estudiarán los aportes que el feminismo ha desarrollado en materia de investigación dentro de las relaciones internacionales, así como la influencia que el género ha tenido para la formulación de políticas globales y la implementación de estas a nivel local.

  17. IDENTIFICACIÓN, EVALUACIÓN Y PUESTA EN VALOR DE UN PATRIMONIO HIDRÁULICO SINGULAR: LAS GALERÍAS DRENANTES DE LA CUENCA DEL JÚCAR

    Directory of Open Access Journals (Sweden)

    Emilio Iranzo García

    2010-01-01

    Full Text Available De los bienes que conforman el patrimonio cultural de España, los relacionados con el manejo de los recursos hídricos, ya sean destinados al riego o al abastecimiento humano, han sido históricamente y siguen siendo elementos mínimamente valorados y poco estudiados en el seno de la investigación histórica, artística y etnológica. Sin embargo, estas arquitecturas del agua y conocimientos ancestrales para la gestión de la escasez hídrica juegan un papel importante en la configuración de buena parte de nuestros paisajes; paisajes a los que desde la disciplina geográfica nos tratamos de aproximar. El conocimiento del medio natural, la construcción de artilugios y el uso de determinados artefactos para la captación y distribución del agua son, sin duda alguna, un patrimonio de la sociedad que los ha generado y los ha mantenido. Uno de los elementos más singulares por su antigüedad, concepción técnica y arquitectura son las galerías drenantes o foggaras, un sistema de captación de aguas subterráneas mediante un túnel excavado horizontalmente en el subsuelo. Su identificación, estudio y puesta en valor puede convertirse en un ejercicio efectivo, en primer lugar para la salvaguarda de las galerías como bien patrimonial, en segundo lugar para comprender el origen de un paisaje de regadío y en tercer lugar como estrategia para el desarrollo socioeconómico de un territorio.

  18. La puesta en valor de la Huaca Pucllana y su repercusión en la conciencia turística de la comunidad de Miraflores

    OpenAIRE

    Mendoza Cáceres, Angélica Maciel

    2015-01-01

    El presente trabajo de investigación busca medir la evolución de conciencia turística de los vecinos de la comunidad de Miraflores a través del tiempo y como este ha influido en el desarrollo de la Huaca Pucllana, como producto turístico y que la puesta en valor no es un gasto sino una inversión a largo plazo viable y auto sostenible y es ejemplo tanto para otras comunidades urbanas como para poblados rurales de nuestro país, y puede fomentar en los moradores el deseo de gestionar los espacio...

  19. Cuidados de enfermería en las úlceras del pie diabético. Reunión y puesta al día

    OpenAIRE

    Rincón Martín, Marina

    2016-01-01

    Entre las numerosas repercusiones de la diabetes mellitus a nivel sistémico, se pueden señalar la neuropatía, la angiopatía periférica y el aumento de la susceptibilidad para sufrir infecciones como las principales causas de la aparición de úlceras del denominado “pie diabético”, cuya incidencia en estos pacientes se estima alrededor del 15%. Debido a la magnitud de este problema, a su relación con un mayor riesgo para sufrir amputaciones, y a que en los últimos años ha aumentado el número...

  20. Una pequeña puesta al día sobre la tricotilomanía[A brief update on trichotillomania

    Directory of Open Access Journals (Sweden)

    Julio Torales

    2016-10-01

    Full Text Available Trichotillomania is a chronic disorder characterized by the fact of tearing the hair by oneself, resulting in considerable loss of it. This disorder appears to be a relatively common in pediatric population. Its ocurrence is associated with significant morbidity, comorbidity and functional impairment in adults, surprisingly few studies investigating the psychopathology of trichotillomania actually they included teenagers or children. Recent reviews have shown the efficacy of cognitive-behavioral pediatric trichotillomania, therapy but have also noted problems with relapse; these same reviews have mentioned the general lack of benefit associated with treatment only with selective inhibitors of serotonin reuptake. Recent developments in pharmacotherapy has been suggested that other medicines (atypical antipsychotics, opioid blockers and modulators glutamate are promising as treatments for trichotillomania, both children and adults. This article has the overall objective to conduct a general review of the prevailing trends in pediatric trichotillomania, emphasizing the evaluation of pathology and the most current treatment recommendations.

  1. Significados de la menopausia en un grupo de mujeres de la localidad cuarta Sán Cristóbal Bogotá / Meanings of menopause in a group of women from the San Cristóbal neighborhood in Bogotá

    OpenAIRE

    Parrado Lozano, Yaneth Mercedes

    2009-01-01

    Considerar la experiencia como un fenómeno de interés de la práctica de enfermería permitió desarrollar una investigación de tipo fenomenológico, para conocer, como fue la experiencia de la menopausia y los significados en un grupo de mujeres de la Localidad cuarta San Cristóbal de Bogotá. El hallazgo central fue la multidimensionalidad y variación del fenómeno en la vida de las mujeres, en los aspectos de: influencia de la madre, maternidad, relación con la pareja y los hijos, y la transi...

  2. Notes on the Start-Up of the Latina Power Station; Notes concernant le demarrage de la centrale nucleaire de Latina; Zapusk ehlektrostantsii Latina; Notas sobre la puesta en marcha de la central electrica de Latina

    Energy Technology Data Exchange (ETDEWEB)

    Calabria, G.; Gualtieri, G. [AGIP Nucleare, Milano (Italy)

    1963-10-15

    desarrollo de los ensayos finales, sobre la carga del combustible y el orden en que se ejecutaron las operaciones de puesta en marcha y sobre las determinaciones y maniobras de regulacion posteriores al estado critico. Se resenan asimismo las operaciones iniciales de generacion y conexion de la central con la red electrica. Por ultimo, se mencionan los problemas de organizacion derivados de la explotacion de la central, incluyendo la preparacion y formacion profesional del personal y las medidas de seguridad adoptadas. (author) [Russian] Privoditsya informatsiya o zapuske pervoj ital'yanskoj atomnoj ehlektrostantsii Latina moshchnost'yu 200 mgvt. Reaktor rabotaet na prirodnom urane s grafitovym zamedlitelem i gazovym okhlazhdeniem. Posle kratkogo opisaniya osnovnykh kharakteristik ehlektrostantsii privodyatsya podrobnye dannye otnositel'no provedeniya zaklyuchitel'nykh ispytanij stantsii'', toplivnoj zagruzki i poryadka ehkspluatatsii, izmerenij i upravleniya s dovedeniem do kriticheskogo sostoyaniya. Daetsya ob''yasnenie raboty po zapusku i vklyucheniyu stantsii v ehlektroset'. Izlagayutsya takzhe problemy, svyazannye s ehkspluatatsiej stantsii, v tom chisle podgotovka personela i ego kvalifikatsiya, mery po bezopasnosti. (author)

  3. Methodology for evaluating the grounding system in electrical substations; Metodologia para la evaluacion del sistema de puesta a tierra en subestaciones electricas

    Energy Technology Data Exchange (ETDEWEB)

    Torrelles Rivas, L.F [Universidad Nacional Experimental Politecnica: Antonio Jose de Sucre (UNEXPO), Guayana, Bolivar (Venezuela)]. E-mail: torrellesluis@gmail.com; Alvarez, P. [Petroleos de Venezuela S.A (PDVSA), Maturin, Monagas (Venezuela)]. E-mail: alvarezph@pdvsa.com

    2013-03-15

    The present work proposes a methodology for evaluating grounding systems in electrical substations from medium and high voltage, in order to diagnose the state of the elements of the grounding system and the corresponding electrical variables. The assessment methodology developed includes a visual inspection phase to the elements of the substation. Then, by performing measurements and data analysis, the electrical continuity between the components of the substation and the mesh ground is verified, the soil resistivity and resistance of the mesh. Also included in the methodology the calculation of the step and touch voltage of the substation, based on the criteria of the International IEEE standards. We study the case of the 115 kV Pirital Substation belonging to PDVSA Oriente Transmission Network. [Spanish] En el presente trabajo se plantea una metodologia para la evaluacion de sistemas de puesta a tierra en subestaciones electricas de media y alta tension, con la finalidad de diagnosticar el estado de los elementos que conforman dicho sistema y las variables electricas correspondientes. La metodologia de evaluacion desarrollada incluye una fase de inspeccion visual de los elementos que conforman la subestacion. Luego, mediante la ejecucion de mediciones y analisis de datos, se verifica la continuidad electrica entre los componentes de la subestacion y la malla de puesta a tierra, la resistividad del suelo y resistencia de la malla. Se incluye tambien en la metodologia el calculo de las tensiones de paso y de toque de la subestacion, segun lo fundamentado en los criterios de los estandares Internacionales IEEE. Se estudia el caso de la Subestacion Pirital 115 kV perteneciente a la Red de Transmision de PDVSA Oriente.

  4. Tratamiento cognitivo-conductual en la menopausia

    OpenAIRE

    Gutiérrez Gómez-Calcerrada, Sonia

    2012-01-01

    Dada la carencia de alternativas terapéuticas a la terapia hormonal sustitutiva que aborden la sintomatología menopáusica y los diferentes aspectos que influyen en esta etapa, y la incapacidad de los tratamientos hormonales para la remisión de la sintomatología psicológica en la etapa climatérica, se plantea como objetivo de la presente investigación: establecer un programa de intervención cognitivo-conductual eficaz para mujeres climatéricas con sintomatología menopáusica.

  5. El Apando y la puesta en crisis novelesca y fílmica de la racionalidad occidental como denuncia del sistema social

    Directory of Open Access Journals (Sweden)

    Darcie Doll

    2016-12-01

    Full Text Available El artículo propone que en las dos versiones de El Apando, la novela y el filme, se exhibe una puesta en crisis de los fundamentos de la racionalidad y sus correlatos totalizadores desde varios frentes: la escenificación de la perspectiva óptica del sujeto geometral, la crítica del discurso tradicional de la nación y el planteamiento del encierro carcelario como extensión de la cárcel que es el mundo. A través de diversas estrategias discursivas se produce una subversión de los códigos realistas, en el marco de una denuncia de la opresión y la violencia del sistema social contemporáneo. Los relatos nos introducen en lo que será, décadas más tarde, la representación del mundo del narcotráfico y las consecuencias de la globalización económica en América Latina.

  6. Funciones parentales: Indagación sobre las actitudes hacia el juego infantil y la puesta de límites en un grupo de padres. Elaboración de una escala para evaluarlas Parental functions: Inquiry on attitudes towards children's game and putting limits on group of parents. Development of a scale to evaluate them

    Directory of Open Access Journals (Sweden)

    Graciela Paolicchi

    2011-12-01

    Full Text Available Con la investigación UBACyT (2010-2012 "Juego, apego y poblaciones vulnerables. El juego como facilitador del desarrollo infantil y su relación con las modalidades de apego en poblaciones vulnerables", se comenzó a construir una escala para evaluar las actitudes de los padres hacia el juego infantil y otros tópicos como la puesta de límites y la calidad vincular con sus hijos. Solidariamente a esta tarea, se implementan Talleres a padres -en el marco del Programa de Extensión Universi- taria "Juegotecas Barriales"- en que se que actualizan, entre otros temas, el lugar y el valor del juego en la infancia. Con el fin de diagnosticar la percepción parental sobre el juego infantil y la puesta de límites, al inicio de cada taller se administró una escala tipo Likert. En el presente escrito se presenta esta metodología de carácter cuantitativo, así como se sintetizan algunos de los resultados derivados del uso de este instrumento en un grupo de 104 padres de la Ciudad de Buenos Aires, que corresponde a la primera etapa de la construcción de la escala y otro grupo de 367 padres de la ciudad de Salta, sobre la que se aplicó la escala para continuar con el proceso de construcción y ajuste de los items.With the research UBACyT (2010-2012 "Game, attachment and vulnerable populations. The game as a facilitator of child development and its relation with patterns of affection in vulnerable populations" began to build upa a scale to assess attitudes of parentes towards children´s play and other topics such as setting limits and quality links with their children. The project is consistent with the University Extension Program "Neighborhood playground" in which workshops are deployed to parents whom updates, among other topics, the place and value of playing in childhood. In order to diagnose the parental perception of children's game and a limits setting, at the beginning of each workshop were given a Likert's scale. This paper presents the

  7. Causas de fallo en la implantación del TPM y modelo de puesta en marcha integrador

    Directory of Open Access Journals (Sweden)

    Rafael Mateo Martínez

    2010-02-01

    Full Text Available Las empresas modernas precisan ser competitivas para sobrevivir en el mercado, por este motivo muchas compañías se plantean estrategias como el TPM (Total Productive Maintenance para la obtención de mejoras tangibles e intangibles en la organización que les ayuden a afrontar las dificultades del negocio. La gran mayoría de las organizaciones no son capaces de acometer con éxito la implantación del TPM, por no considerar las causas de fallo que se pueden presentar durante las diferentes etapas de desarrollo del modelo de implantación. El presente trabajo de investigación define, mediante un análisis de las publicaciones y estudios de caso existentes, un modelo genérico de implantación del TPM, y recopila las barreras, facilitadores y causas más comunes de fallo que se deben de tener en cuenta en cada etapa de su desarrollo y que pueden afectar al éxito de la implementación

  8. Territorios Rebeldes: la puesta en valor del patrimonio cultural en Tepoztlán, México.

    Directory of Open Access Journals (Sweden)

    Alfonso Valenzuela Aguilera

    2013-01-01

    Full Text Available El tradicional pueblo mexicano de Tepoztlán fue el modelo de referencia para la creación del programa federal conocido como Pueblos Mágicos, que en el fondo busca capitalizar la cultura y las tradiciones al “poner en valor” los atractivos turísticos de dichos lugares. Sin embargo, Tepoztlán ha sido un bastión de resistencia ante los intereses de las redes de capital global y en su historia reciente detuvo la construcción de un complejo inmobiliario multinacional que incluía un campo de golf, teniendo para ello que destituir a sus gobernantes locales. Sobre la base de condiciones identitarias que trascienden el ámbito local, se integrarían dentro de la estructura comunitaria tradicional la población extranjera y avecindada de otras regiones conformando un híbrido social que permitiría el desarrollo de efectivas dinámicas contestatarias basadas en la identidad, el arraigo y la organización social.

  9. Puesta en Valor del Patrimonio Agrícola en Ciudades Intermedias, caso Chillán

    Directory of Open Access Journals (Sweden)

    Marcela Andrea Soto Caro

    2016-12-01

    Full Text Available Frente al actual escenario territorial, donde la ruralidad persiste en todas sus expresiones identitarias, sociales y económicas, el suelo agrícola pierde extensión, en una pugna constante por sobreponerse a la expansión urbana. Las modificaciones estructurales del espacio periurbano en las últimas décadas nos presentan la consolidación de los procesos de crecimiento y transformación urbana desiguales, que bajo el modelo neoliberal imperante y persistente, se hacen cada vez más visibles en las ciudades de rango intermedio. Si bien no tienen la escala metropolitana, adquieren velocidades de crecimiento urbano aún mayores. El presente estudio compara la evolución de indicadores relacionados con el desarrollo urbano del territorio, para analizar las dinámicas de crecimiento y la pérdida de suelo agrícola. Si bien las ciudades de rango intermedio promueven el consumo de suelo urbano, existe una oportunidad de resaltar el valor patrimonial y productivo del suelo agrícola.

  10. Cadenas agroalimentarias orgánicas en el sur de chile: tensiones que condicionan su puesta en valor

    Directory of Open Access Journals (Sweden)

    Sandra Ríos Núñez

    2016-01-01

    Full Text Available El modelo industrial de producción de alimentos ha incentivado la emergencia de cadenas agrarias alternativas. Estas suponen modelos de producción fuertemente vinculados al territorio y tienen la finalidad de transitar desde la producción industrial a la captura de valor por medio de sistemas de producción que garanticen la seguridad y soberanía alimentaria. Esta investigación analiza el funcionamiento de la agricultura orgánica en Chile, en tanto producción agraria no convencional, con la finalidad de perfilar su desarrollo como una estrategia de captura de valor y producción de alimentos saludables especialmente para pequeños pro- ductores agrarios. Se busca visibilizar modelos de producción que reconectan el flujo de producción-circulación-consumo a través de un mecanismo de gobernanza que posibilite la captura de valor en el territorio.

  11. Los nuevos desafíos de la puesta en práctica de las políticas de saneamiento ambiental

    Directory of Open Access Journals (Sweden)

    Chamizo Garcia, Horacio Alejandro

    2009-07-01

    Full Text Available Se presentan los resultados más importantes de una revisión bibliográfica sobre el tema de análisis de la gestión de políticas de saneamiento ambiental en asentamientos humanos. La revisión se propuso identificar factores determinantes de la gestión en estudios realizados en diversos países y particularmente en América Latina, tomando como referencia el neoinstitucionalismo y sus vertientes teóricas histórica, sociológica, normativa y de elección racional racional. Como principales resultados se identifica el papel que tiene la resistencia por parte de actores estratégicos frente a las nuevas ideas así como la influencia de los paradigmas dominantes y su socialización. Se constata también la influencia que tiene el marco normativo formal y particularmente el diseño de los espacios de interacción intersectorial en el abordaje del saneamiento ambiental desde una perspectiva compleja. Así mismo, se evidencia el papel de las relaciones de agencia en condiciones de cuasimercados y su influencia en la conformación de redes de actores. Los hallazgos explican integradamente los principales factores que influyen durante la puesta práctica políticas públicas de gran relevancia para la salud de la población y la reducción de inequidades sociales.

  12. 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 ...

  13. 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

  14. Una mirada al surgimiento del turismo en Pátzcuaro

    Directory of Open Access Journals (Sweden)

    José Manuel Martínez Aguilar

    2017-01-01

    Full Text Available El turismo en Pátzcuaro, como actividad económica, tuvo su origen y primer impulso desde finales del siglo XIX, a partir de la puesta en marcha del tramo ferroviario de Morelia a Pátzcuaro, cuando distintos empresarios apostaron por invertir en servicios de hospedaje, alimentación y transporte destinados al turismo. Sin embargo, la inestabilidad de la Revolución Mexicana cortó la inercia del desarrollo turístico. Fue hasta que el General Lázaro Cárdenas del Rio tomó la gubernatura del estado que se implementaron estrategias, se decretaron leyes y se hicieron mejoras en la ciudad, con el objeto de que ésta fuera un foco de atracción para el turismo nacional y extranjero, y que permitiera a la población tener mayores ingresos económicos.

  15. Diseño e implementación de instalación électrica, electromecánica y sistema de puesta a tierra para el Catamaran Ocean Spray

    OpenAIRE

    Moreira Mite, Enrique Francisco; Camacho Delgado, Ricardo Javier

    2012-01-01

    Diseño e implementación de implementación de instalación eléctrica y puesta a tierra de una embarcación tipo   Catamaran. Siendo el turismo una fuente de ingreso económico muy importante para el país especialmente en las islas Galápagos, la asociación de armadores de Galápagos se encuentran en la necesidad de ampliar los medios para un mejor servicio a los turistas en los lugares de visita dentro de las islas, se proponen construir nuevas embarcaciones que cumplan con todas las seguridad...

  16. Elaboración de un plan de empresa para la puesta en marcha y posterior desarrollo de una empresa de radiodifusión en la comarca de L'Horta

    OpenAIRE

    GALLENT PÉREZ, JOSÉ MANUEL

    2013-01-01

    [ES] Elaborar un plan de empresa para presentarlo a inversores y socios para la puesta en marcha y posterior desarrollo de una empresa de medios a través de radio, ofreciendo el servicio de radio fórmula (música comercial) para las localidades de la comarca de L'Horta. Queremos ofrecer un servicio de entretenimiento a través de radio, orientándonos a un tipo de oyente con un perfil de edad joven y a los que les guste la música comercial que más suene en cada momento, principalmente del tip...

  17. Performance e identidad en la fiesta "carnavalesca" de la Virgen de la Candelaria en Puno : la puesta en escena de dos mundos que entran en tensión

    OpenAIRE

    Tito Mamani, Charo

    2012-01-01

    La problemática de la identidad y performance en una ―puesta en escena‖como lo es la fiesta de la Candelaria en Puno nos muestra todo un mundo de encuentros y desencuentros, de diálogo y de tensiones a la vez. Pues estas construcciones colectivas de identidad local– las identidades son tanto hegemónicas como subalternas; originarias, mestizas o modernas– buscan mecanismos de auto-afirmación situados en un espacio y en un tiempo determinado asignado por este magnífico evento como es la fies...

  18. Diseño, construcción y puesta a punto de un banco de pruebas para el estudio del golpe de ariete en instalaciones hidráulicas

    OpenAIRE

    Calonge Hervás, Cynthia María

    2016-01-01

    El objetivo del presente trabajo sobre el diseño, construcción y puesta a punto de una instalación para ensayos de golpe de ariete es profundizar en el estudio de dicho fenómeno. En el documento se describe de manera teórica el golpe de ariete, los efectos que produce y las aplicaciones que tiene. Se incluyen los cálculos y los bocetos del diseño de la instalación. Para ello, se aplican conocimientos de las asignaturas de la rama Fluidomecánica y de CAD. Contiene también ...

  19. Modelación de sistemas de puesta a tierra para evaluación de sobretensiones transitorias; Modelling large grounding systems to evaluate transient voltages

    Directory of Open Access Journals (Sweden)

    Yandi Anibal Gallego Landera

    2015-04-01

    Full Text Available En plantas generadoras y en subestaciones se requieren sistemas de puesta a tierra (SPT espaciosos, con configuraciones complejas como parte del sistema de protección contra rayos. Las corrientes provocadas por una descarga atmosférica pueden causar altas tensiones en los cables de señales ubicados cerca de los SPT. Estas tensiones transitorias pueden causar falsas señales, las cuales provocan un mal funcionamiento de la instrumentación electrónica. Determinar medidas de protección contra rayos requiere del conocimiento de la máxima elevación de la tensión entre el SPT y la tierra remota. El presente trabajo propone una metodología para analizar el comportamiento transitorio de redes de tierra. La técnica se basa en considerar los diferentes segmentos de la malla de tierra como elementos de líneas de transmisión. Para desarrollar esta metodología se utilizó el software MATLAB-Simulink. Los resultados se validan por comparación con modelos basados en la teoría del campo electromagnético publicados en la literatura. In generating plants and substations spacious grounding systems with complex configuration as part of the protection system against lighting, are required. The current caused by an atmospheric discharge can cause high voltages in the signal cables located near the grounding systems. These transient voltages may be the reason for the occurrence of false signals, which can cause malfunctioning and of electronic instruments. The knowledge of maximum elevation of voltage between the grounding systems and the remote ground is required to determine protection against lightning. This paper proposes a methodology to analyze the transient behavior of grounding grid. The technique is based on considering the different segments of the ground grid as elements of transmission lines. For modeling the grounding systems behavior in its transient state faster, the MATLAB-Simulink software was used. The results were validated by

  20. para su puesta en marcha

    Directory of Open Access Journals (Sweden)

    Sergio Franco Maass

    2004-01-01

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

  1. Enfoque por competencias, ¿una respuesta al fracaso escolar?

    Directory of Open Access Journals (Sweden)

    Philippe Perrenooud

    2009-01-01

    Full Text Available Son tiempos de reflexión sobre las competencias. Queda mucho por investigar acerca de sus posibilidades pero es cierto que, desde el punto de vista teórico, el enfoque por competencias se presenta como potente al complementar una pedagogía que, tradicionalmente, se ha centrado en las disciplinas y en los saberes. Pero también este enfoque aparece fuerte en el campo de la formación en la medida en que viene vinculado a las prácticas sociales y educativas, al trabajo pedagógico de los problemas educativos en las diferentes situaciones, a los proyectos que los educadores desean materializar en sus lugares de trabajo. Están por demostrar las expectativas puestas en el enfoque por competencias y este texto trata de pensar toda una serie de cuestiones relacionadas con su puesta en marcha en los contextos formativos.---------------------------------------------------------------------These are times for reflection on skills. There is much left to investigate on their possibilities but it is true that, from the theoretical point of view, the skill approach appears to be powerful by complementing a pedagogy which, tradicionally, has focused on the knowledge and disciplines. But this approach appears strongly in the training field as it is linked to the social and educational practices, to the pedagogic work on educative problems, to the different situations, to the project that teachers wish to materialize in the labor places. Still to be demonstrated are the expectations on the skills approach, and this text tries to think on a series of matters related with its set in motion in the learning contexts.

  2. La Fiesta de la Historia, de la Universidad a la ciudadanía: puesta en valor de la Historia y el Patrimonio = The “Feast of History”, from the University to the citizenship: an enhancement of History and Heritage

    Directory of Open Access Journals (Sweden)

    Olga Moreno-Fernández

    2018-01-01

    Full Text Available Resumen: La Fiesta de la Historia nace en Bolonia y se extiende, entre otras ciudades, a Sevilla. En ella juegan un papel fundamental la escuela, la universidad, las instituciones y las asociaciones culturales que, junto a expertos y estudiosos, van a mostrar a la sociedad y a recordar las raíces de dónde venimos, permitiendo poner en valor la historia de la ciudad y el territorio. Es una semana en que las plazas, las calles, teatros y centros escolares y administrativos de las ciudades participantes sirven de escenario para celebrar conferencias, mesas redondas, espectáculos y exposiciones. Estas actividades permiten acercar a la ciudadanía a la historia y al patrimonio de la ciudad. Presentamos las experiencias de Bolonia y presentamos y valoramos la puesta en marcha de la iniciativa en Sevilla, dos iniciativas que surgen desde la Universidad. Abstract:  The “Feast of History” originated in Bologna and extended, among other cities, to Seville. School, college, institutions and cultural associations, together with experts and scholars, play a key role in this Feast and try to make society remember its roots, allowing to value history of the city and territory. For a week the squares, streets, theaters, schools and administrative centers of the participating cities are the setting for lectures, panel discussions, performances and exhibitions. These activities aim at bringing the history and heritage of the city to participants. We present the experiences of Bologna and the initiative of Seville, both initiatives arising from the University.

  3. 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 ...

  4. Diseño, construcción y puesta a punto de una instalación para la determinación de la cavitación en bombas centrífugas

    OpenAIRE

    Barcina García, Pedro

    2016-01-01

    El presente proyecto se basa en el diseño, construcción y puesta a punto de una instalación para el estudio de la cavitación en bombas centrífugas. Es una profundización, desde el punto de vista experimental, en los conocimientos aprendidos sobre el tema en las asignaturas de Ingeniería Fluidomecánica, Mecánica de Fluidos y Máquinas Hidráulicas. Además del experimento, se ha preparado la instalación y se ha redactado un guion de prácticas para que pueda ser usada con fines didácticos por los ...

  5. HILOS DE TEATRO: LA PUESTA EN ESCENA DEL PALACIO DE LOS SOVIETS DE LE CORBUSIER, 1931 / Strands of theatre: Le Corbusier’s staging of the Palace of the Soviets, 1931

    Directory of Open Access Journals (Sweden)

    Josefina González Cubero

    2012-11-01

    Full Text Available RESUMEN El proyecto para el concurso del Palacio de los Soviets en Moscú (1931 de Le Corbusier plantea otra posible y más fragmentaria clave de interpretación que, aunque en principio sea más marginal, merece ser mencionada: la relación con el teatro, con la renovación de la escena europea y con la experimentación soviética, porque Le Corbusier es consciente de que la arquitectura no consiste sólo en la cualidad del edificio, es también una puesta en escena, una dramaturgia. Escenógrafos como Appia, con la luz, o directores de escena como Max Reinhardt, con el espectáculo de masas, y Vsevelod Meyerhold, con el teatro japonés del Kabuki, van penetrando en el sentir de un Le Corbusier que deja la impronta teatral en la puesta en escena de la megaestructura moscovita. SUMMARY Le Corbusier’s design submitted to the public competition for the Palace of the Soviets in Moscow (1931 may have an additional interpretation which, although less researched and in principal more marginal, is noteworthy. And that is the relationship between theatre and the resetting of the stage in Europe and Soviet experimentation. Le Corbusier was aware that architecture goes beyond the building itself and is also a sort of staging or dramaturgy. Set designers such as Appia, through the use of light, or stage directors like Max Reinhardt, through the use of performance for the masses, and Vsevelod Meyerhold, through Japonese Kabuki theatre, gradually permeated the sensibility of Le Corbusier who left staging as a mark in his design for the Moscow megastructure.

  6. Aportaciones a la transición del hiero I al hierro II en el centro de la cuenca del udero

    Directory of Open Access Journals (Sweden)

    Manuel GARCÍA ALONSO

    2009-10-01

    Full Text Available En la diversidad de publicaciones que se ponen al alcance del investigador, y que son referidas a la Edad del Hierro, entendida de una manera amplia, se viene observando, en el manejo terminológico más bien, una serie de cuestiones que quedan latentes entre las diferentes tomas de postura; pero que, salvo excepciones, no dan pie a una discusión o puesta en común de las mismas, y que entendemos son de capital importancia para la zona objeto de la presente comunicación.

  7. Neutron Tests at the Start-Up of EDF1; Les essais neutroniques au demarrage du reacteur EDF1; Nejtronnye izmereniya pri puske reaktora EDF1; Ensayos neutronicos efectuados durante la puesta en marcha del reactor EDF1

    Energy Technology Data Exchange (ETDEWEB)

    Teste du Bailler, A. [Centre d' Etudes Nucleaires de Saclay (France); Janin, R. [Electricite de France, Paris (France)

    1963-10-15

    'air. Au cours de certains paliers de temperature (jusqu'a 140{sup o}C), des mesures de coefficients de temperature et d'efficacite de barres de controle ont ete effectuees. Dans le meme temps des mesures d'indices de spectre ont ete realisees par activation de detecteurs appropries (U, Pu, Lu, Mn, In, Au). La technique d'oscillation a ete utilisee pour mesurer l'efficacite de certains barres de compensation. Enfin des mesures de neutrons rapides ont ete faites concernant les etudes de protection et de dommages sur le graphite. (author) [Spanish] Con motivo de la puesta en marcha del reactor EDF1 los autores efectuaron una serie de mediciones neutronicas utilizando los principales metodos experimentales perfeccionados en los reactores de Marcoule. Las mediciones versaron esencialmente sobre la eficacia de las barras de control a diferentes profundidades. Sobre esta base los autores elaboraron un plan de extraccion de las barras que permite alcanzar la plena potencia respetando ciertos limites impuestos por la temperatura de las envolturas y del gas. Paralelamente, llevaron a cabo mediciones del flujo para distintas posiciones de las barras de compensacion y para diferentes absorbentes en ciertos canales, con arreglo a calculos de prevision bidimensionales. Estas mediciones se efectuaron por activacion de detectores puntiformes, recurriendo a la tecnica clasica por envenenamiento mediante aire. Dentro de ciertos intervalos de temperatura (hasta 140{sup o}C) efectuaron mediciones de los coeficientes termicos y de la eficacia de las barras de control. Al mismo tiempo, realizaron mediciones de los indices espectrales por activacion de detectores apropiados (U, Pu, Lu, Mn, In, Au). Utilizaron la tecnica de oscilacion para medir la eficacia de ciertas barras de compensacion. Por ultimo, efectuaron mediciones de neutrones rapidos relacionados con los estudios de proteccion y de dafios provocados en el grafito. (author) [Russian] Seriya njtronnykh izmerenij s primeneniem osnovnykh

  8. La integridad del contenido y la autenticidad de origen en la transmisión o puesta a disposición de la factura

    Directory of Open Access Journals (Sweden)

    Juan Jesús Martos García

    2011-10-01

    Full Text Available

    Desde la aprobación de la Directiva 2001/115/CE, la normativa comunitaria regula la factura transmitida y conservada digitalmente, al establecer como requisito genérico para su aceptación que se garantice la integridad del contenido y la autenticidad de origen. La aprobación de la Directiva 2010/45/UE, que tendrá que ser transpuesta antes del 1 de enero del 2013, modifica el marco jurídico de la factura electrónica, al afectar directamente a esta exigencia, lo que sin duda implicará una reforma de nuestra normativa interna.

  9. La construcción prefabricada de pasos inferiores al ferrocarril y su puesta en obra mediante la técnica de empuje o del cajón hincado

    OpenAIRE

    Escribano Méndez, Ramón; López Palomar, Rafael

    1989-01-01

    "The best level crossing is a dead crossing", those involved are accustomed to say. Yet, until a short time ago, eliminating these conflictive crossings not only implied a great deal of money but prolonged building work, with the all too familiar sequel of precautions, speed restrictions and problems for rail traffic. However, a brand new system, based on using hydraulic jacks to drive the concrete structure of the crossing to a different level in the track embankment, allows the execution in...

  10. El análisis de impacto presupuestario en salud: puesta al día con un modelo de abordaje genérico Budgetary impact analysis in health: update with a model using a generic approach

    Directory of Open Access Journals (Sweden)

    Osvaldo Ulises Garay

    2011-09-01

    Full Text Available El Análisis de Impacto Presupuestario (AIP en el campo de la salud puede ser definido como la estimación de los costos financieros netos que le representarían a una institución dar cobertura a una determinada intervención. En la práctica, los AIP se utilizan frecuentemente para decidir la inclusión o exclusión de medicamentos en formularios terapéuticos y notoriamente han obligado a reconocer que las Evaluaciones Económicas representan una mirada parcial en el análisis de las consecuencias de la incorporación de tecnologías sanitarias. Este trabajo procura identificar los determinantes y componentes de los análisis de impacto presupuestario, y a partir de ello describir el desarrollo de un modelo creado en una planilla de cálculo que permite considerar cualquier tecnología sanitaria y obtener estimaciones con diferentes grados de complejidad. Su diseño incorpora de forma explícita las habilidades del usuario y las deficiencias de información, buscando a su vez promover el desarrollo de estas herramientas en los ámbitos de gestión de nuestros países.Budgetary Impact Analysis (BIA applied to health care can be defined as the estimate of the net financial costs that a given intervention would represent for a health care institution given the case it was covered. Routinely, BIAs are used to decide the inclusion or exclusion of drugs in therapeutic schemes; actually, the increased use of BIAs have raised awareness about the fact that health economic evaluations represent a partial view in the analysis of the consequences of incorporating health technologies. This paper seeks to identify the determinants and components of BIA, and to describe the development of a spreadsheet model that enables us to assess the Budget impact of any health technology and perform estimations with differing degrees of complexity. Its design explicitly adapts to the user skills and gaps in information, thus seeking to promote the development of these tools in the management fields in our countries.

  11. Las figuras de protección de los espacios naturales en las Comunidades Autónomas españolas: una puesta al día

    OpenAIRE

    Florido Trujillo, Gema

    2005-01-01

    In the present article it is made a review to the different figures from protection of spaces that exist and that find representation within the Spanish state. The list includes figures of international kind, as state and local as much. The great variety of typology and the fact that the competitions are in local hands, cause that it is difficult the comparison and the coordination of efforts within the framework of the advisable protection of the environmental and specific diversity. In the ...

  12. Puesta al día de la instrucción penal: la interceptación de las comunicaciones telefónicas y telemáticas

    OpenAIRE

    Sanchis Crespo, Carolina

    2017-01-01

    The interception of telematic means of communication used by criminals could likely involve a great amount of important information related to criminal proceedings. This material can be essential evidence in a criminal investigation. Spanish Criminal Procedure Act has been modified recently to regulate the process of recovering digital evidence with guarantees. This is the result of facing the upcoming and so called fourth industrial revolution which implies the digital transformation of the ...

  13. Aspectos educativos de las redes sociales: un análisis de los factores que determinan su puesta en práctica

    OpenAIRE

    Morales Pérez, Gloria Luisa

    2016-01-01

    Considerando el papel fundamental de las TICs en la formación de la persona, capacitada para desenvolverse en la sociedad actual, y más concretamente la integración de las denominadas herramientas 2.0 al contexto cotidiano comunicativo y de las relaciones personales en la actualidad, parece impensable que la formación de estas personas no cuente con las herramientas apropiadas para que puedan entrenar las capacidades y competencias que posteriormente deberá ejercer de forma habitual. Las ...

  14. La ciudad en el turismo - el turismo en la ciudad. Centros urbanos: puesta en valor turístico del interior bonaerense

    OpenAIRE

    Mantero, Juan Carlos

    2003-01-01

    La presente contribución aspira a plantear la interacción turismo - ciudad a partir de la consideración de la ciudad en el turismo y de el turismo en la ciudad, proposiciones que contribuyen a rescatar la necesaria y diferencial utilidad que la entidad urbana le confiere a la actividad turística y la singular dimensión que el turismo le confiere a la ciudad. La reflexión suscitada en relación al tema resulta de tareas de investigación realizadas en Argentina, en particular respecto de la metr...

  15. Evolución del montaje y postproducción del videoclip musical: del jumpcut a los VFX como paradigma de iconicidad y puesta en escena

    Directory of Open Access Journals (Sweden)

    Juan-Ángel JÓDAR-MARÍN

    2017-07-01

    Full Text Available Esta investigación tiene por objeto determinar la evolución del discurso formal del videoclip mediante el montaje y la postproducción audiovisual, desde su aparición hasta el actual contexto mediático con la implementación del tratamiento digital aplicado al ámbito de los efectos visuales. Tras un largo periodo de hegemonía cultural en los años 80 y 90, la industria discográfica se vio afectada por una crisis profunda unida a una redefinición de las condiciones de producción y distribución. En ese contexto, y fruto de esa situación, comenzó el resurgimiento del videoclip gracias al papel tan relevante ejercido por Internet y, concretamente, las plataformas de alojamiento de vídeos como Youtube, favoreciendo una expansión sin precedentes de la distribución de contenidos audiovisuales por la Red y convirtiéndose en la vía de consumo masivo del videoclip. El estudio se inicia con el análisis del ritmo, como base discursiva elemental de la articulación sincrónica de imagen y música, hasta el estudio de las tendencias más frecuentes en cuanto a aspectos concretos de postproducción y efectos visuales.

  16. Concentración parcelaria, puesta en riego y desarrollo rural: el caso de Yéchar (Mula-Región de Murcia. De 1973 a 2016

    Directory of Open Access Journals (Sweden)

    José Antonio López Fernández

    2017-01-01

    Full Text Available La pedanía muleña de Yéchar, en el interior de la Región de Murcia, puede ser estudiada desde la geografía regional como un modelo de iniciativas para el desarrollo rural, al haber superado diversas crisis socioeconómicas mediante diferentes actuaciones agrarias. Durante los últimos cincuenta años sus vecinos han debido hacer frente al éxodo rural de los secanos del Sureste de la Península Ibérica con actuaciones de agentes locales y de las Administraciones Públicas, entre las que sobresalen la Declaración de Zona de Interés Nacional, la concentración parcelaría de las explotaciones, y la transformación en regadío con aguas del trasvase Tajo-Segura de más de 800 hectáreas. Las entrevistas realizadas a pie de parcela explican cómo los agricultores de Yéchar cambian los cultivos para hacer frente a los problemas del mercado hortofrutícola, y buscan otras políticas de gestión del agua por la excesiva dependencia de los recursos hídricos foráneos del Trasvase Tajo-Segura.

  17. 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

  18. Análisis de las estrategias de vinculación de los varones al Programa de Salud Sexual y Procreación Responsable de la municipalidad de La Plata

    OpenAIRE

    Rodríguez Moreno, Sandra Milena

    2014-01-01

    La responsabilidad de las decisiones en la salud sexual y reproductiva ha sido puesta en mayor parte sobre las mujeres, invisibilizando las relaciones de poder que se viven al interior de las parejas; por esta razón surge el interés de analizar las estrategias de vinculación de los varones que se implementan desde el Programa de Salud Sexual y Procreación Responsable PSSyPR. En este aspecto, este trabajo propuso estudiar la temática, con el fin de aportar elementos que permitan mejorar sus re...

  19. PAST: Programa para el proyecto y análisis de sistemas de puesta a tierra. (Primera parte; SistPTEx: Program for the project and analysis of grounding system. (First part.

    Directory of Open Access Journals (Sweden)

    Angel Cecilio Valcárcel Rojas

    2011-05-01

    Full Text Available resistencia de contacto a tierra de diferentes configuraciones de electrodos, desde métodos aproximados, métodos semiexactos, hasta métodos que garantizan muy buenos niveles de exactitud. El desarrollo alcanzado por la computación ha permitido el rescate de algoritmos relativamente antiguos como los basados en la teoría de las imágenes de Maxwell, hasta el desarrollo de métodos basados en la teoría de los elementos finitos. En este trabajo se exponen las características y bondades de un programa para el proyecto y análisis de sistemas de puesta a tierra para cualquier instalación eléctrica, aplicando la teoría de las imágenes de Maxwell.  During the historical development of electrical engineering, have developed many methods for calculating the contact resistance grounding electrodes of different configurations, from approximate methods, semi exact methods up methods which guarantee good levels of exactness. The development achieved by the computer has enabled the rescue of relatively old algorithms, such as those based on the theory of Maxwell’s images, until the development of methods based on the theory of finite elements. In this paper we describe the features and benefits of a program for the design and analysis of grounding systems for any electrical installation, using the theory of Maxwell’s images.

  20. Hipertensión arterial, menopausia y compromiso cognitivo

    OpenAIRE

    Mildren del Sueldo; Augusto Vicario; Gustavo H. Cerezo; Gonzalo Miranda; Judith Zilberman

    2018-01-01

    Resumen: La enfermedad cardiovascular es la primera causa de mortalidad en la mujer en la mayor parte del mundo y pese a esta realidad el riesgo de padecerla continúa siendo subestimado en mujeres. La hipertensión arterial es uno de los principales determinantes de este riesgo y su prevalencia ha incrementado de manera global, especialmente en mujeres después de los 60 años. Si bien la disminución o pérdida de los estrógenos tiene impacto sobre la regulación de la presión arterial, el papel d...

  1. Puesta a punto del método de PCR en tiempo real para la cuantificación de Aspergillus carbonarius en uvas Vitis vinifera cv. Tannat

    Directory of Open Access Journals (Sweden)

    Gustavo Garmendia

    2011-12-01

    Full Text Available La ocratoxina A (OTA es una micotoxina que ha sido detectada en uvas y vinos. Es producida por Aspergillus ochraceus, Penicillium verrucosum, Aspergillus carbonarius y especies pertenecientes al agregado Aspergillus niger. En los últimos años se ha descrito la presencia de Aspergillus aculeatus y Aspergillus japonicus en la superficie de uvas y su capacidad de producir OTA. A pesar de que la concentración detectada de cepas pertenecientes a la Sección Nigri fue < 100/g de uva, se han aislado, identificado y caracterizado 56 cepas de Aspergillus pertenecientes a la Sección Nigri. El 51 % fue identificado como A. niger, el 39 % como A. japonicus, 5 % como A. tubingensis -like y 5 % como A. foetidus. Ninguna cepa de A. carbonarius fue aislada. Debido a que esta especie ha sido descrita como la principal responsable de la presencia de OTA en uvas y vinos por su capacidad de producir altas concentraciones de OTA, se requiere un método más sensible que los métodos convencionales para detectar y cuantificar la presencia de A. carbonarius en uva. En este trabajo se optimizó la técnica de PCR en tiempo real para la detección y cuantificación de esta especie en uvas d e la variedad Tannat.

  2. Políticas sanitarias locales puestas a prueba: consultores, expertos, misiones internacionales y poliomielitis en España, 1950-1975

    Directory of Open Access Journals (Sweden)

    Rosa Ballester

    2015-09-01

    Full Text Available Este trabajo analisa las misiones de expertos de organismos sanitarios internacionales en España destinadas a informar sobre la situación, las actividades realizadas y las intervenciones necesarias en la lucha contra la discapacidad física de los niños. El Plan España-23 fue el instrumento utilizado por la OMS y otras agencias para poner en marcha el proceso de cambio en un país en transformación durante la larga etapa de vigencia de la dictadura franquista. El trabajo utiliza como fuentes informes inéditos de expertos de la OMS, que fueron resultado de visitas realizadas al país entre 1950 y 1975. El abordaje metodológico consistió en un análisis del discurso que se encuentra en las fuentes y su contextualización en los marcos historiográficos pertinentes.

  3. Del desestanco del tabaco a la puesta en marcha de la Compañía General de Tabacos de Filipinas (1879-1890

    Directory of Open Access Journals (Sweden)

    Martín Rodrigo Alharilla

    2009-01-01

    Full Text Available La primera etapa de la Restauración española significó un período de importantes transformaciones tanto en el papel de Filipinas en el contexto internacional como en su relación con España. En el artículo se estudia uno de los cambios más signifi cativos, el que tuvo por objeto el desestanco del tabaco en el archipiélago asiático y la subsiguiente creación de la Compañía General de Tabacos de Filipinas. Se analiza, por este orden, el proceso que condujo al fin del monopolio fi scal sobre el tabaco, la creación de la empresa Tabacos de Filipinas y los procesos que permitieron a una poderosa empresa privada de capital franco-español operar en el lejano ámbito filipino. Las conclusiones del artículo, por último, apuntan cuan difusas eran las fronteras entre la política y la empresa españolas en el último cuarto del siglo XIX y cuestionan el pretendido carácter particular o diferencial del colonialismo español.

  4. La concejala antropófaga, Pedro Almodóvar (2009. Sexo, política y canibalismo: la puesta en escena del cuerpo grotesco

    Directory of Open Access Journals (Sweden)

    Diane Bracco

    2012-10-01

    Full Text Available En 2009, durante el rodaje de Los abrazos rotos, Pedro Almodóvar dirige un cortometraje cómico, La concejala antropófaga, pretexto a un juego de reescritura paródica y emblemático de las conexiones transtextuales que se establecen en toda la producción almodovariana. Este artículo se propone esbozar un análisis del relato fílmico desde la perspectiva grotesca bajtiniana. Se tratará de determinar en qué medida sexo, política y canibalismo se conjugan para forjar una figura grotesca propicia a una celebración de la materialidad del cuerpo, celebración teñida de sátira política. El personaje de la concejala golosa, cocainómana y ninfómana se caracteriza por una tendencia al desbordamiento – físico y verbal – y un exceso de vitalidad sintomáticos de la relación dialógica que ella mantiene con el mundo. Figura humana con vigor sobrehumano, aparece como un ser híbrido y monstruoso, un organismo excéntrico en el sentido grotesco del término, ansioso de devorar literalmente el mundo. Tal exaltación del cuerpo grotesco se plasma en un monólogo a medio camino entre la confesión íntima y el discurso político, verdadera sátira de la retórica derechista.

  5. Evaluación del impacto asistencial de la puesta en funcionamiento de una unidad funcional de artroplastia de rodilla Evaluation of the impact of the introduction of a functional knee arthroplasty unit

    Directory of Open Access Journals (Sweden)

    Marta Riu

    2009-10-01

    Full Text Available Objetivos: Evaluar el impacto sobre el consumo de recursos hospitalarios, la calidad y los costes directos del proceso asistencial, de la puesta en funcionamiento de una unidad funcional de artroplastia de rodilla en el Hospital de l'Esperança (Barcelona. Métodos: Estudio retrospectivo basado en dos cortes transversales, el primero con 317 pacientes intervenidos en 2004, antes de la implantación de la unidad funcional de artroplastia de rodilla, y el segundo con 624 pacientes intervenidos en 2005. Se recogieron datos de proceso, complicaciones y costes. Resultados: La estancia media disminuyó en 9 días (pObjectives: To evaluate the impact of a functional knee arthroplasty unit in Hospital de l'Esperança (Barcelona on resource consumption, quality indicators and the direct costs of the healthcare process. Method: We performed a retrospective study based on two cross-sections: the first in 317 patients who underwent surgery in 2004 before the implementation of the functional knee arthroplasty unit and the second in 624 patients who underwent surgery in 2005. Data related to the process, complications and costs were collected. Results: The mean length of hospital stay decreased by 9 days (p <0.001. The number of patients requiring convalescence after the intervention increased by 9.5% (p <0.001. Overall, the total cost of the healthcare process decreased by 16%, from 9,031.34 to 7,591.54 € (p <0.001. This cost reduction was due to decreases in the length of hospital stay (2,946.0 vs. 1,616.8 €, surgery costs (2,156.7 vs. 1,776.7 € and prosthesis costs (2,730.5 vs. 2,678.1 €. Conclusions: The implementation of the functional knee arthroplasty unit reduced overall costs and length of hospital stay and substantially increased activity while maintaining a similar complication rate.

  6. INTRODUCCIÓN AL MÉTODO CIENTÍFICO EN NIÑOS DE CINCO AÑOS

    OpenAIRE

    Soler-López, Elena

    2013-01-01

    Este trabajo pretende introducir a los niños de cinco años en el método científico como proceso que favorece la adquisición y desarrollo de capacidades, habilidades y competencias en los alumnos, estimulando un desarrollo integral de la persona a nivel físico, cognitivo, emocional y social. Para ello, el diseño de la propuesta ha abarcado desde una fundamentación teórica hasta la puesta en práctica de la misma. Este diseño, realizado a través de las fases del método aplicadas al estudio de...

  7. Puesta a prueba de un indicador sencillo de degradación en suelos histeréticos del Valle del Cauca, Colombia

    Directory of Open Access Journals (Sweden)

    Lozano Jaime

    2005-06-01

    Full Text Available En el 2001 se llevó a cabo el estudio en cinco suelos de los órdenes vertisol y molisol del CIAT, utilizando una malla anidada georreferenciada de 68 puntos de muestreo ubicados en esquema logarítmico a dos profundidades: en la superficie y en la zona de menor penetrabilidad. Esta fue la base para hacer la cartografía de un índice de compactación y de las principales propiedades físicas de los suelos. El índice de compactación se estimó combinando la densidad aparente y la humedad gravimétrica de muestreo utilizando una matriz de relación ideada para este fin. Se evaluaron cuatro categorías de características físicas: propiedades hídricas (conductividad hidráulica, tasa de infiltración, sortividad y tasa de redistribución de humedad volumétrica usando el método del “perfil instantáneoâ€?, capacidad de retención a través de la curva característica; condición estructural mediante el método de “Yoderâ€? modificado y condición física general (textura, densidades, materia orgánica, penetrabilidad y distribución de poros. Para validar el índice de compactación se siguieron tres vías: comportamiento de las categorías de propiedades físicas en cada unidad homogénea del mapa de compactación o consistencia (análisis de geoestadística y de correlación por componentes principales; estudio gráfico de la tendencia de las curvas de redistribución del agua en el suelo, y análisis multivariado discriminante con el fin de comprobar la viabilidad de convertir al índice de compactación en una docena de clases por consistencia. El índice propuesto probó ser buen indicador ya que en las unidades con compactación decrecieron las cualidades físicas evaluadas. Palabras claves: Ándice de compactación, propiedades hídricas del suelo, condición estructural, capacidad de retención de humedad, geoestadística, suelos histeréticos. ABSTRACT Testing a simple soil degradation indicator in

  8. 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 ...

  9. Estudio comparativo de los diseños de dos programas públicos de apoyo al manejo forestal comunitario en México y Guatemala

    OpenAIRE

    Michel, Marike

    2009-01-01

    Análisis del diseño de dos programas públicos de apoyo al manejo forestal comunitario en dos países de la región mesoamericana, México y Guatemala, con el propósito de entender mejor los factores que han generado la definición de un problema público alrededor de los bosques comunitarios y que han permitido su puesta en la agenda pública. Capítulo I. comparación de los contextos rurales de México y de Guatemala en el siglo XX. -- Capítulo II. Marco teórico de las políticas públicas. -- Capí...

  10. Propuesta de adaptación al sistema de créditos (ECTS de la asignatura "El mundo de la Energía" de la diplomatura de maestro

    Directory of Open Access Journals (Sweden)

    Ana María VÁZQUEZ

    2005-01-01

    Full Text Available En el presente trabajo se presenta una propuesta de adaptación de la asignatura "El Mundo de la Energía" al sistema de créditos (ECTS del espacio Europeo de enseñanza superior. El programa de la asignatura, vigente desde 1991, no se ha modificado, lo que esta propuesta modifica no es el programa de la asignatura, sino la metodología de impartición. La propuesta de adaptación al sistema de créditos ECTS que se presenta corresponde a la segunda parte de la asignatura: Energía y Sociedad, con una carga de 2,25 créditos del plan de estudios del 91. La metodología de enseñanza/aprendizaje se basa fundamentalmente en dos aspectos: el trabajo personal del alumno y la puesta en común del trabajo realizado.

  11. /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.

  12. Puesta en marcha de una Unidad de Valoración Sociosanitaria (UVASS ubicada en un hospital de agudos (Fundación Hospital Son Llatzer: FHSLL Implementation of a socio-medical assessment unit (UVASS located in a hospital for acute patients (Foundation Hospital Son Llatzer: FHSLL

    Directory of Open Access Journals (Sweden)

    Mª. Inés Cuesta Antelo

    2008-03-01

    Full Text Available Introducción: La unidad de valoración sociosanitaria del Complejo Hospitalario de Mallorca (CHM está ubicada físicamente en el hospital de agudos de Son Llátzer (FHSLL de Palma de Mallorca. Para su puesta en funcionamiento se tendrán como modelo las unidades funcionales interdisciplinarias (UFISS de Cataluña, que funcionan a raíz de la creación del programa "Vida als anys" en el año 1986, aunque otras autonomías también cuentan con estos equipos de soporte. Su actividad empezó, tímidamente, en junio del año 2002, cuando el Hospital General (HG y el Hospital Joan March (HJM se reconvirtieron en hospitales sociosanitarios. Somos una unidad interdisciplinar encargada de definir y priorizar las necesidades de cada usuario mediante una valoración profesional integral. Objetivos: Dar a conocer la tipología más habitual de los pacientes valorados en esta unidad y los principales problemas encontrados a la hora de derivarlos a los centros más adecuados a su caso; y describir las dificultades halladas desde un principio, así como las consultas realizadas a nuestro equipo. Material y método: Estudio retrospectivo de los pacientes valorados entre junio de 2002 y diciembre de 2005. Los parámetros utilizados son: escala de Barthel, escala de Pheiffer, escala de control de síntomas, así como la edad y el sexo de los pacientes. Para la valoración de enfermería se ha utilizado el modelo de Virginia Henderson con las catorce necesidades básicas. Resultados: Reflejan los distintos servicios a los que se han derivado los pacientes, así como la falta de recursos que hemos detectado durante el periodo de estudio. Conclusiones: Creemos que la correcta selección de los pacientes es la base del buen funcionamiento de la UVASS. Somos una unidad joven, en fase de expansión, con mucho camino por recorrer y muchas posibilidades, teniendo en cuenta los nuevos recursos sociosanitarios en proyecto, tanto a nivel autonómico como nacional (Ley de

  13. 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.

  14. 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 ...

  15. 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...

  16. 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 ...

  17. Influencia de la estación y de las especies Phragmites australis y Schoenoplectus californicus en la eliminación de materia orgánica y nutrientes contenidos en aguas servidas durante la operación de puesta en marcha de humedales construidos de flujo horizontal subsuperficial

    Directory of Open Access Journals (Sweden)

    Karen Rojas

    2013-01-01

    Full Text Available Las plantas de tratamiento de aguas servidas basadas en humedales construidos de flujo horizontal subsuperficial (HSS, logran su etapa de madurez después de dos años de operación. La eficiencia de operación de los sistemas depende de la estacionalidad, tipo de plantas y periodo de madurez del sistema. El objetivo de este trabajo es evaluar la influencia de la estación y de las especies Phragmites australis y Schoenoplectus californicus, en la eficiencia de depuración en materia orgánica y nutrientes de unidades de HSS, durante la etapa operativa de puesta en marcha. Con esta finalidad, se implementaron cuatro unidades de HSS bajo condiciones climáticas mediterráneas australes. Dos unidades fueron plantadas con Phragmites australis y las otras dos, con Schoenoplectus californicus. En este trabajo se presentan los resultados de la etapa de puesta en marcha, que cubre los primeros 193 días de operación. Se evaluó la influencia de la especie de planta y la estación (invierno y primavera, en la eficiencia de depuración de materia orgánica (Demanda Biológica de Oxígeno, DBO5, y Demanda Química de Oxígeno, DQO y nutrientes (nitrógeno (N-NH4+, N-NO3- y NT y fósforo (P-PO4-3 y PT. Las unidades de HSS plantadas con Phragmites australis mostraron mejor adaptación temprana que las unidades de HSS plantadas con Schoenoplectus californicus. Sin embargo, las eficiencias de eliminación fueron similares en todas las unidades. Estacionalmente, se pudo evidenciar una diferencia de eliminación para DQO (invierno: 18 a 30%, primavera: 45 a 55% y NT (invierno: 25 a 65%, primavera: 25 a 35%.

  18. 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.

  19. Género, Desarrollo y Cooperación al Desarrollo

    Directory of Open Access Journals (Sweden)

    Teresa Rendón

    2003-02-01

    Full Text Available La diferenciación social existente entre hombres y mujeres -denominada "género"en la literatura de nuestros días- es considerada como una de las modalidades de desigualdad más generalizadas en el mundo contemporáneo. Por lo tanto, lograr la igualdad social entre los sexos constituye uno de los objetivos del desarrollo y de la cooperación al desarrollo. En un principio, a la luz de un enfoque denominado "Mujeres en el desarrollo", se buscaba una mayor y mejor integración femenina a la actividad económica para el mercado, mediante programas productivos y de capacitación dirigidos a grupos de mujeres. Más tarde, este enfoque centrado en las mujeres, se sustituyó por el de "Género en el Desarrollo", un enfoque más amplio e integrado que abarca los distintos ámbitos del desarrollo y de la cooperación, pues se reconoce que el problema de la inequidad entre los sexos no atañe sólo a las mujeres sino a la sociedad en su conjunto. No obstante, entre los planes y programas y su puesta en práctica hay todavía una enorme brecha.

  20. Ruedas cuadradas: Introducción al análisis de la falsa creatividad

    Directory of Open Access Journals (Sweden)

    Juan Martínez-Val

    2012-04-01

    Full Text Available El objetivo del artículo es analizar la denominada “falsa creatividad”. La creatividad es un valor social firmemente asentado. La falsa creatividad es aquella que se da en el proceso de creación, desarrollo o puesta a punto de un producto o servicio, destinado a un fin social. Es decir, una actividad que no tiene por qué estar ligada a las llamadas profesiones creativas ni a los conocidos como productos de diseño. El autor establece siete criterios diferenciales para analizar la “Falsa Creatividad”. Realiza una descripción exhaustiva de cada uno de ellos, identificando con ejemplos diversos los mismos. La falsa creatividad puede llevar al usuario o consumidor de un producto a rechazar este, o en todo caso, a obtener una imagen del mismo muy diferente a la que el creativo pensó, por lo que es indispensable garantizar que la creatividad en sí misma, no es un impedimento para el consumo de un producto concreto.

  1. Geoingeniería, apuesta incierta frente al cambio climático

    Directory of Open Access Journals (Sweden)

    Gian Carlo Delgado Ramos

    2012-01-01

    Full Text Available Ante el acelerado aumento de la concentración de gases de efecto invernadero, producto de un metabolismo social creciente (uso de energía y materiales, se ha propuesto, como potencial solución, la puesta en marcha de diversas tecnologías, entre ellas aquellas diseñadas para manipular y controlar el clima. El presente texto revisa el metabolismo social imperante y sus proyecciones para las próximas décadas, para desde ahí presentar la problemática y el reto del cambio climático, sus implicaciones y las soluciones tecnológicas de manipulación del clima propuestas desde un discurso político que aboga por una "economía verde". A partir de describir las geoingenierías propuestas, se revisa críticamente su complejidad, viabilidad, incertidumbres y potenciales implicaciones. Reconociendo que el uso de las geoingenierias es más un asunto económico-político que técnico, se concluye con un llamado a abrir el debate sobre las implicaciones y deseabilidad de tales o cuales geoingenierías, partiendo de la premisa de que la principal medida frente al cambio climático es la efectiva reducción del metabolismo social y por tanto de las emisiones.

  2. 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

  3. 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.

  4. 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

  5. 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.

  6. 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

  7. Necesidad de nuevas limitaciones o excepciones para facilitar la digitalización y puesta a disposición de obras protegidas en el marco de la educación virtual

    Directory of Open Access Journals (Sweden)

    Juan Carlos Monroy Rodríguez

    2010-11-01

    Full Text Available El presente artículo pretende analizar si las limitaciones o excepciones consagradas actualmente en los países de América Latina y el Caribe responden a las necesidades actuales del derecho de autor y su interacción con el derecho a la educación y el acceso a la investigación, o si por el contrario es necesario modificar las limitaciones o excepciones existentes, o crear otras nuevas, a efecto de restablecer el necesario equilibrio de derechos e intereses, acorde con los actuales fenómenos sociales y económicos derivados de la evolución tecnológica. Previa referencia al marco normativo internacional y nacional, se desarrolla un análisis de la forma en que los derechos e intereses se contraponen en torno al derecho de autor y los derechos a la educación y al acceso al conocimiento. El presente estudio considera la forma en que los países de la región han consagrado en sus leyes limitaciones o excepciones en beneficio del derecho a la educación y al acceso al conocimiento. Se llega a la conclusión que actualmente las normas de Estados Unidos o de la Unión Europea reconocen más beneficios a la educación y a la investigación en sus leyes de derechos de autor, que los reconocidos en las normas existentes en América Latina y el Caribe. Ejemplo de normas que han favorecido el equilibrio de derechos e intereses es el caso de las limitaciones o excepciones aplicables en el entorno digital a favor de la educación a distancia que Estados Unidos ha consagrado en el marco de la ley Teach Act de 2002, o el manejo que la Directiva Europea hace de la interfaz entre la tutela de las medidas tecnológicas de protección y las limitaciones o excepciones a favor de la educación.

  8. Análisis de seguridad y salud ocupacional en el equipo de investigación a cargo del proyecto puesta en valor del patrimonio cultural del noreste de Santa Cruz a través del turismo

    Directory of Open Access Journals (Sweden)

    Ester Beatriz Bravo

    2014-06-01

    Full Text Available El equipo de investigación al que la becaria se incorpora, indaga el patrimonio cultural del noreste de Santa Cruz. Su plan de formación buscaba vincular el objeto de análisis con la Tecnicatura Universitaria en Seguridad e Higiene en el Trabajo que la alumna estudia. Resultó prioritario trabajar en el análisis de las condiciones propias de desempeño del equipo de investigación en relación a la seguridad, con el anhelo de contribuir al desarrollo de un sistema de gestión de Seguridad y Salud Ocupacional –recientemente iniciado- para posteriormente, adaptarlo a los diversos sitios y lugares de patrimonio cultural regionales.

  9. Las “Exposiciones Orientalistas Salesianas” de 1943-1944: la puesta en escena de la construcción del Estado en la Amazonía ecuatoriana

    Directory of Open Access Journals (Sweden)

    Cecilia Ortiz Batallas

    2017-06-01

    Full Text Available El artículo analiza las Exposiciones Orientalistas Salesianas llevadas a cabo entre 1943 y 1944, en Quito, Guayaquil y Cuenca, como eventos que permiten elucidar el proceso de incorporación de los pueblos amazónicos al Estado ecuatoriano. Dichas exposiciones representaron a los territorios de los pueblos shuar, en la coyuntura posterior al conflicto limítrofe entre Ecuador y Perú de 1941. La contribución sostiene que en este espacio periférico el Estado se construyó de manera descentralizada y por medio de la delegación de sus funciones en distintos actores locales.

  10. 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...

  11. 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...

  12. 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.

  13. 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 ...

  14. 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 ...

  15. 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 ...

  16. 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 ...

  17. 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.

  18. 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.

  19. 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.

  20. 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,.

  1. 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 ...

  2. 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

  3. 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....

  4. Panorama de las Academias frente al Siglo XXI

    Directory of Open Access Journals (Sweden)

    Zoilo Cuellar Montoya

    1996-12-01

    nombramiento, en ese importante lugar de la salubridad pública, de una persona sin experiencia en esos temas. Las consecuencias de esta decisión no se hicieron esperar y hoy son muy grandes los conflictos existentes en los programas de salud del pueblo colombiano.

    Este hecho, por lo menos en Colombia, marca claramente la posición de los estamentos oficiales y políticos frente al médico y a sus posibilidades como administrador en salud. Más tarde, otro economista, que estuvo casi dos años al mando del Ministerio mencionado, contra viento y marea, engañando con su agilidad verbal a quienes ya al final de su período intentaron intervenir, cohonestado por el silencio cómplice del médico y, porque no decirlo, el de nuestra Academia, logró la puesta en marcha de una nueva ley de seguridad social con una filosofía sana, pero totalmente economicista, y en cuyo desarrollo nunca se tuvo en cuenta al médico: ley que busca el cubrimiento universal en salud del pueblo colombiano, loable sin lugar a dudas, pero impracticable por fallas conceptuales básicas, económicas, operacionales y profesionales (desconocimiento del recurso humano en salud...

  5. Análisis y puesta en marcha de estrategias de coordinación de asignaturas en 1º y 2º de grado de Psicología

    OpenAIRE

    Rueda Sánchez, Mercedes I.; Jenaro Río, Cristina

    2012-01-01

    Este trabajo se ha realizado en el marco de las labores de coordinación del Grado de Psicología, durante el curso 2011/2012, en la Facultad de Psicología de la Universidad de Salamanca. El objetivo ha sido conocer la percepción que tienen profesores y alumnos respecto al grado de formación y adquisición de competencias. Por un lado, hemos pretendido conocer la percepción que tienen los profesores sobre cómo consideran que han formado a sus alumnos en las competencias específicas y transversal...

  6. Macé, J. F. y Martínez Zauner, M. (Eds.. (2016. Pasado de violencia política. Memoria, discurso y puesta en escena. Madrid, MD: Anexo. 279 pp.

    Directory of Open Access Journals (Sweden)

    Maria P. Chiara Bianchini

    2016-06-01

    Full Text Available Pasado de violencia política es una obra colectiva, conformada por diez ensayos de jóvenes investigadores e investigadoras, procedentes de distintas disciplinas: historia, ciencias políticas, antropología, arqueología, filosofía, filología, historia del arte. Esta convergencia responde al carácter eminentemente interdisciplinario del ámbito al que adscribe el libro ―lo estudios de memoria― y de la Asociación que da vida a este proyecto, Memorias en Red. Sin embargo, en este caso, la recolección de ensayos no apunta a establecer comparaciones interdisciplinarias sobre algún objeto específico ―que es el enfoque más común de este tipo de obras― sino que su objetivo fundamental es discutir sobre la memoria en sí, sus dinámicas, funciones y manifestaciones. Persiguiendo este objetivo, el libro presenta un recorrido a través de objetos y contextos muy distintos: exhumaciones de fosas comunes, manifestaciones callejeras, ex centros de detención y tortura, prácticas de disidencia asociadas a la estética y la ética del cuerpo, procesamientos internacionales de derechos humanos y redes de activismo ciudadano. [...

  7. EL ITINERARIO DIDÁCTICO INDUSTRIAL: EL PROBLEMA DE LA PUESTA EN PRÁCTICA DE LOS PRINCIPIOS TEÓRICOS EN EL “MOLINAR” DE ALCOY (ALICANTE.

    Directory of Open Access Journals (Sweden)

    Rafael Sebastia Alcaraz

    2010-12-01

    Full Text Available Resumen: Los itinerarios didácticos constituyen en apariencia un recurso muy innovador; sin embargo, conviene recordar la larga tradición pedagógica que los sustenta. Este recurso contribuye al desarrollo de capacidades del ser humano, genera aprendizajes significativos y motiva, tanto al docente con su preparación, como al alumno en su práctica. El itinerario industrial por la cuenca del río Molinar se desarrolla por un conjunto fabril en ruinas ubicado en las inmediaciones de Alcoy (Alicante. Este recurso ha sido concebido, particularmente, para explicar el origen de la industrialización, los factores de localización industrial y las relaciones entre el ser humano con su entorno. Palabras clave: Itinerarios didácticos, industrialización, unidad didáctica, Alcoy (Molinar, Alicante. Abstract: The didactic routes seem to be a very innovative resource, but it is convenient to remind their long teaching tradition. This resource contributes to the development of human capacities; it generates significant learning and motivates as much the teacher when preparing as the pupil when practicing. The industrial route along the river Molinar goes through factory ruins which are located in Alcoy and its surroundings (Alicante. The activity has been specially conceived to explain the origin of the industrialization, the industrial factors for choosing the site and the relations between the human being and his environment. Key words: Didactic routes, industrialization, didactic unit, Alcoy (Molinar, Alicante. RÉSUMÉ: Les itinéraires didactiques constituent apparemment un recours très innovateur; cependant il convient de rappeler leur longue tradition pédagogique. Ce recours contribue au développement de capacités de l´être humain et il engendre des apprentissages significatifs et motive, tant l’enseignant durant la préparation, comme l’élève durant la pratique. L’itinéraire industriel au long de la rivière Molinar parcourt l

  8. 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.

  9. 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.

  10. Status report about the works for the start up of the RA-0 `zero power` nuclear reactor at the Cordoba National University; Estado actual de avance de las tareas para la nueva puesta en marcha del reactor nuclear RA-0 en la Universidad Nacional de Cordoba

    Energy Technology Data Exchange (ETDEWEB)

    Martin, H R; Carballido, C; Oliveras, T

    1992-12-31

    After two years of works at the Cordoba National University for the new start-up of the RA-0 `zero power` nuclear reactor, the results obtained are herein presented. Starting with practically null infrastructure at the beginning, specially in human resources and instrumentation of the reactor, the objectives can be considered satisfactory. The training in work of the future operational staff, the design and the construction of the instrumentation and the fitting of the installations are the principal items described in this paper. An special attention is devoted to the insertion of this type of installation in the university organization, usually not prepared for the quality and control activities, which is necessarily considered in these type of works. (Author). [Espanol] Luego de aproximadamente dos anos de trabajo para la nueva puesta en marcha del REACTOR NUCLEAR RA-0, se han alcanzado los resultados presentados en este trabajo. Partiendo de una infraestructura practicamente inexistente en cuanto a recursos humanos y estado de las instalaciones, los avances logrados son significativos. Comenzando por la capacitacion y el entrenamiento del futuro personal de operacion y pasando por la adecuacion de los equipos y componentes, hasta la confeccion de la documentacion mandatoria, se muestran los aspectos mas destacables de los trabajos realizados. Una atencion especial se dedica a la insercion de una instalacion de este tipo en el ambito universitario, el cual por sus particulares caracteristicas, ha debido ser tenido en cuenta permanentemente para la futura operacion de las instalaciones. (Autor).

  11. Preparation of mandatory documentation before the start up of the RA-0 `zero power` nuclear reactor at Cordoba National University; Preparacion de la documentacion mandatoria para la puesta en marcha del reactor nuclear RA-0 en la Universidad Nacional de Cordoba

    Energy Technology Data Exchange (ETDEWEB)

    Martin, H R; Keil, W M; Pezzi, N

    1992-12-31

    Before the start up of the RA-0 `zero power` nuclear reactor installed at Cordoba National University, it was necessary to send to the Regulatory Authority the mandatory documentation which is required in the licensing process. With the previous papers existing for the operation in the first years of the `70, a work program for the future operational training personnel was elaborated. Based on the Authority`s applicable rules and the recommendations and with particular criteria originated in the working university conditions, the SAFETY report of RA-0 nuclear reactor was prepared. This paper describes the principal contents, items and documents involved in the safety report. (Author). [Espanol] Con motivo de la nueva puesta en servicio del REACTOR NUCLEAR RA-0 fue necesario elaborar la documentacion mandatoria requerida por la Autoridad Regulatoria Nacional. Siguiendo los lineamientos de las normas y recomendaciones vigentes e incluyendo criterios propios en lo que debia ser el contenido final de dicha documentacion, fue preparado lo que se ha denominado el INFORME DE SEGURIDAD DEL REACTOR NUCLEAR RA-0. Este documento que se describe en este trabajo, si bien contiene las habituales descripciones de todos los Informes de Seguridad, incluye otros aspectos que no siendo requeridos expresamente en el mismo, han dado una mayor coherencia a la conformacion de todos los aspectos que interrelacionan las areas de seguridad fisica, radiologica, nuclear y de control de materiales nucleares bajo salvaguardias. (Autor).

  12. “El viejo y el mar” Puesta en práctica de una estrategia didáctica en estudiantes de la Enseñanza del Inglés de la Sede del Pacífico

    Directory of Open Access Journals (Sweden)

    López Montero, Rosberly

    2012-09-01

    Full Text Available Resumen: El presente ensayo tiene como objetivo dar a conocer las actividades y los resultados de una estrategia didáctica puesta en práctica para analizar la obra “El Viejo y el Mar” de Ernest Hemingway en una clase de Literatura Estadounidense de la Sede Regional del Pacífico de la Universidad de Costa Rica. Se establece la importancia de la literatura en la enseñanza del inglés, la creación de estrategias diseñadas para el nivel universitario y la descripción de cada una de las actividades para su cumplimiento exitoso. Se concluye que los estudiantes universitarios responden positivamente a las lecciones planeadas desde una perspectiva innovadora, lo que permite obtener resultados alentadores en el contexto educacional.Abstract: The aim of this essay is to reveal the activities as well as the results of a teaching strategy developed in order to analyze the book “The Old Man and the Sea” by Ernest Hemingway in a U.S. Literature class at the Pacific Campus of University of Costa Rica. The importance of literature in English teaching, the design of university strategies and the description of the activities carried out to accomplish a successful class, are the main aspects presented throughout this work. It is concluded that university students respond positively to innovation in their classes, which allows for satisfying results within the teaching context.

  13. 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)

  14. 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.

  15. 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.

  16. 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 ...

  17. 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).

  18. 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 ...

  19. 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.

  20. 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...

  1. 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...

  2. 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 ...

  3. 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 ...

  4. 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...

  5. 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

  6. 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 ...

  7. 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.

  8. 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 ...

  9. 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.

  10. 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)

  11. 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.

  12. Una gran medida de ‘opinio juris’ y práctica estatal al gusto: ¿la receta de la costumbre internacional contemporánea?

    Directory of Open Access Journals (Sweden)

    Fabián Augusto Cárdenas Castañeda

    2015-03-01

    Full Text Available La práctica social internacional del derecho internacional contemporáneo no corresponde totalmente a la práctica que existía al momento del establecimiento de la cij. El mundo de 1945 definitivamente no es igual al del siglo xxi. Esta realidad ha transformado indudablemente el derecho internacional y cada uno de sus componentes vertebrales, incluyendo la teoría de las fuentes y sus diversos tipos. Desde tal perspectiva, la presente investigación busca revisar el concepto tradicional de la costumbre internacional mediante el estudio de sus dos ingredientes, en particular de la opinio juris, la cual será puesta a prueba a través del uso de literatura y jurisprudencia jurídicas contemporáneas. Luego de exponer algunas de las más grandes dificultades del concepto clásico de la opinio juris, se hará una presentación de novedosos y actualizados conceptos de ella. Lo anterior llevará a demostrar si de hecho se requiere un desarrollo de la definición clásica de la opinio juris y si se puede sugerir que esta es el único ingrediente requerido en la receta de la costumbre internacional contemporánea.

  13. Nuevas formas de llevar una ópera al teatro. Un caso de estudio. La flauta mágica de la compañía 1927 y de Kosky: animación 2d, nuevas tecnologías digitales y estilo vintage

    OpenAIRE

    Sansone, Vincenzo

    2017-01-01

    La ópera, un género que a menudo se asocia al pasado, está más viva que nunca. Gracias a la aportación de directores y experimentadores provenientes del teatro, la ópera se ha convertido en uno de los campos por excelencia para la experimentación contemporánea, sobre todo en relación con el uso de nuevas tecnologías. Una verdadera paradoja. Un ejemplo es la puesta en escena de La flauta mágica de Mozart de la Komische Oper de Berlín, concebida y realizada por la compañía británica 1927 y por ...

  14. Síndrome metabólica e menopausa: estudo transversal em ambulatório de ginecologia Síndrome metabólico y menopausia: estudio transversal en ambulatorio de ginecología Metabolic syndrome and menopause: cross-sectional study in gynecology clinic

    Directory of Open Access Journals (Sweden)

    José Albuquerque de Figueiredo Neto

    2010-09-01

    Full Text Available FUNDAMENTO: No Brasil, são escassos os estudos sobre síndrome metabólica na população geral, mais raros são os que a correlacionam ao climatério. OBJETIVO: Determinar a prevalência da síndrome metabólica e seus componentes em mulheres climatéricas. MÉTODOS: Estudo transversal com 323 mulheres climatéricas, divididas em dois grupos: pré e pós-menopausadas. Foram avaliadas para presença de síndrome metabólica, segundo os critérios do National Cholesterol Education Program's (NCEP e da International Diabetes Federation (IDF. Foi verificada a associação entre as variáveis estudadas e a síndrome metabólica por meio de análise uni e multivariada. Um p-valor FUNDAMENTO: En Brasil, son raros los estudios sobre síndrome metabólico en la población general, más raros son los que la correlacionan al climaterio. OBJETIVO: Determinar la prevalencia del síndrome metabólico y sus componentes en mujeres climatéricas. MÉTODOS: Estudio transversal con 323 mujeres climatéricas, divididas en dos grupos: pre y posmenopáusicas. Se evaluaron para presencia de síndrome metabólico, según los criterios del NCEP y de la IDF. Se verificó la asociación entre las variables estudiadas y el síndrome metabólico por medio de análisis uni e multivariado. Un p-valor BACKGROUND: In Brazil, there are few studies of the metabolic syndrome in the general population, and even fewer studies that establish a correlation between metabolic syndrome and climacteric. OBJECTIVE: To determine the prevalence of metabolic syndrome and its components among climacteric women. METHODS: Cross-sectional study with 323 climacteric women, divided into two groups: pre and post-menopausal. They were examined for the presence of metabolic syndrome, according to the criteria of National Cholesterol Education Program's (NCEP and International Diabetes Federation (IDF. It was possible to notice the association between the variables under study and the metabolic

  15. 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

  16. 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.

  17. 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

  18. 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.

  19. Una mirada estudiantil calificadora al profesorado de la Universidad Técnica de Machala

    Directory of Open Access Journals (Sweden)

    MSc. Nasly Paquita Tinoco Cuenca

    2018-05-01

    Full Text Available Este estudio se realizó en la carrera de Educación Básica de la Universidad Técnica de Machala con el propósito de identificar los criterios de los estudiantes en relación a la labor docente desplegada por sus profesores y socializar estas creencias. La estrategia metodológica asumida responde al paradigma cuanti-cualitativo, se basa en los métodos: fenomenológico, revisión bibliográfica, analítico-sintético y estadístico; la información se obtuvo a través de las técnicas de entrevista en profundidad y el cuestionario, aplicadas a los 138 matriculados en esta carrera que permitieron concluir que en general los profesores se caracterizan por la organización de sus clases, la paciencia mostrada durante la explicación del contenido, la claridad de sus explicaciones y respuestas a las interrogantes de los educandos, la atención a las dificultades del estudiante, la utilidad de las tareas didácticas que asigna y el dominio de los contenidos. No obstante, existen limitaciones en cuanto a las relaciones con los dicentes, el dominio de las tecnologías, y el conocimiento y la puesta en práctica de metodologías de enseñanza que permitan lograr mayor calidad en la formación de los futuros egresados, lo que se refleja en el criterio de estos, quienes manifiestan la posibilidad de recomendarlos a otros condiscípulos.

  20. Puesta en valor de yacimientos arqueológicos amortizados. La hipótesis virtual al servicio de la arqueología de gestión y la difusión cultural. El yacimiento medieval de La Poza. Baltanás (Palencia

    Directory of Open Access Journals (Sweden)

    José R. Almeida Olmedo

    2012-11-01

    Full Text Available The archaeological site of La Poza in Baltanás (Palencia provides new data on medieval rural society in the area of El Cerrato between the ninth and thirteenth centuries. Again emergency archaeology has allowed the recovery of a settlement destined to disappear new data that provide insight into early medieval domestic architecture held in perishable materials.

  1. Identification, preliminary study and valorization of the historical quarries of San Ciprián (Lugo); Identificación, estudio preliminar y puesta en valor de las canteras históricas de San Ciprián (Lugo)

    Energy Technology Data Exchange (ETDEWEB)

    Fernández Suárez, J.; Álvarez Areces, E.; Baltuille Martín, J.M.; Martínez-Martínez, J.

    2017-09-01

    The aim of this paper is showing the existence and characteristics of the historical quarries where the building stones were extracted for the construction of the Architectural Heritage of San Ciprián. It is a small town in the north of Lugo (Galicia, NW of Spain) with a long tradition in the use of the natural stone as building material in its architectural heritage. In addition to the benefits in the historical, socio-economic and industrial knowledge, the location of historical quarries is a fundamental task for the conservation plans, allowing to define the original state of the building stone. Moreover, they provide a new contribution to the regional tourist development, including their location and description in the cultural and environmental touristic routes. This study reveals the existence and characteristics of the signs of operation located in the historical quarries associated with the Architectural Heritage of San Ciprián, although in some cases this quarries have disappeared partially or totally. The areas located are: Porto de Riba, Figueiras, Area of the estuary and Lieiro quarry; we can not affirm the existence of other areas under new constructions, especially in the Porto de Riba and Figueiras. [Spanish] El objetivo del este trabajo es poner de manifiesto la existencia y características de las canteras históricas de extracción de piedra para la construcción del Patrimonio Arquitectónico de San Ciprián, pequeña localidad del N de Lugo (Galicia), donde, a lo largo de los siglos las rocas han sido utilizadas como materiales naturales de construcción, fijando así una vista armónica entre la roca y el paisaje. La localización de las canteras históricas tiene, además del componente del conocimiento histórico, socio-económico e industrial, sobre la tecnología aplicada para la explotación, el objetivo de permitir definir el estado original del material, así como proporcionar una nueva aportación al catálogo turístico de la poblaci

  2. 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...

  3. 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.

  4. 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...

  5. 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...

  6. 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...

  7. 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 ...

  8. 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.

  9. 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), ...

  10. 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...

  11. Diseño y puesta en marcha de un sistema de vigilancia epidemiológica en salud mental Design and implementation of an epidemiological surveillance system for mental health

    Directory of Open Access Journals (Sweden)

    Judith Scharager Goldenberg

    2002-02-01

    Full Text Available Objetivos. Diseñar y poner a prueba un sistema de vigilancia que permita detectar y jerarquizar los problemas más relevantes de salud mental y establecer su asociación con las condiciones de vida de la comunidad estudiada. Métodos. El sistema se diseñó y puso a prueba en un centro de salud de la comuna La Florida, región metropolitana de Chile. Los problemas de salud que se sometieron a vigilancia con seguimiento mensual fueron: adicción (al alcohol, tabaco, drogas y benzodiazepinas, violencia (violencia o sospecha de violencia intrafamiliar y abuso sexual y trastornos en niños (déficit de atención y trastornos de conducta. Mediante un sistema computacional de información geográfica se combinaron estos elementos con datos sociodemográficos de las personas que acudieron a consulta y con datos territoriales que pueden considerarse factores protectores o de riesgo de los problemas de salud, y algunos de los cuales constituyen indicadores de las condiciones de vida de las personas. Resultados. Se probó que el sistema de vigilancia epidemiológica propuesto --que incorpora las condiciones de vida y las variables ambientales-- es una buena herramienta para la acción en salud y complementa la visión parcial de los sistemas de seguimiento, que no incluyen variables de contexto y se centran sólo en los problemas de salud. La información sintetizada en mapas permite visualizar simultáneamente diferentes capas de información sobre los factores relacionados con los problemas de salud estudiados, asociados a un territorio específico, con todas las variables ambientales que implican, en un formato de lectura ágil y evidente por sí mismo. Conclusiones. Estos resultados y la opinión convergente de los médicos participantes y usuarios permiten afirmar que el sistema de vigilancia epidemiológica puesto a prueba en fase experimental logró cumplir los requerimientos básicos de un método de esta naturaleza.Objective. To design and test

  12. 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

  13. Asalto al poder en el porno. Apropiación y empoderamiento en las narraciones postpornográficas

    Directory of Open Access Journals (Sweden)

    Alberto García del Castillo

    2011-06-01

    Full Text Available Es labor de la postpornografía hacer que sexualidades otras y formas nuevas de follar salten al panorama público y, por tanto, político; su discurso crítico revisa la historia del porno desde el post-feminismo y las luchas homosexuales para ganar un espacio de representación y consumo de la sexualidad y permitir la visibilización de lo otro, antes ausente en la pornografía. El postporno, comprendido como representación propia del movimiento queer, alberga en su centro dinámicas de empoderamiento, en estrecha relación con estrategias de apropiación; es toma de poder en si mismo, pero también representación de apropiaciones posibles y creador por tanto de realidades disidentes del discurso normativo. El epoderamiento se juega tanto en el exterior como en el interior del postporno, siendo a la vez agente y documento de apropiaciones. Indagando en el interior de la narración postpornográfica descubrimos elementos que actúan apropiaciones de poder; la propia historia del postporno habla de la puesta en juego de estrategias de empoderamiento. Identificando estos elementos como actantes, se muestra atractiva la búsqueda de un modelo que permita sondar los mecanismos de empoderamiento jugados dentro de las narraciones postpornográficas; por ello, veremos de qué manera la semiótica se acerca a la propuesta contracultural de este asalto al poder en el porno.

  14. 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.

  15. 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.

  16. 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.

  17. 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

  18. Tratamiento cognitivo-conductual de la sintomatología asociada a la menopausia

    Directory of Open Access Journals (Sweden)

    Cristina Larroy

    2004-01-01

    Full Text Available El cese definitivo de la menstruación se presenta asociado a una serie de síntomas físicos,psicológicos y sociales susceptibles de ser abordados mediante técnicas cognitivo conductuales. Enel presente trabajo se presenta un programa de intervención basado en dichas técnicas. Treintamujeres climatéricas siguieron este programa durante diez semanas. Los resultados indican que elprograma consigue la reducción de los síntomas y la mejora de la calidad de vida.

  19. La terapia hormonal de reemplazo en la pre y pos menopausia: tendencias y controversias

    Directory of Open Access Journals (Sweden)

    Sánchez-Ramírez, Georgina

    2008-07-01

    Full Text Available Con la finalidad de contribuir a una actualización del estado del arte y bajo una perspectiva crítica, se realizó una revisión bibliográfica sobre las indicaciones terapéuticas de la Terapia de Reemplazo Hormonal, así como las diferentes controversias, usos y beneficios durante la pre y la posmenopausia. Los beneficios demostrados hasta el momento de la THR, son la corrección de la atrofia urogenital y/o vaginal y la disminución de las molestias de los síntomas vasomotores (los sofocos o bochornos, los vértigos, las sensaciones de hormigueo en las extremidades y palpitaciones y el aumento de la DMO que puede prevenir las fracturas de cadera y vértebras. Las dosis recomendadas para la administración de THR han variado con el tiempo, cobrando fuerza últimamente la corriente clínica que recomienda dosis menores que las utilizadas en años anteriores, ya que se están demostrando los mismos beneficios, disminuyendo los riesgos asociados a su uso, lo cual requiere una actualización en la información que manejan tanto los médicos como las usuarias. Existe además la necesidad de ampliar las investigaciones sobre el uso de otro tipo de terapias para aliviar la sintomatología climatérica diferente a la THR.

  20. La integración al empleo de los condenados a una pena privativa de libertad

    OpenAIRE

    Ortega Bravo, María

    2016-01-01

    En este trabajo se pretende analizar la situación laboral que mantiene el preso durante su estancia en prisión y contemplar las distintas opciones de reinserción en la sociedad tras su puesta en libertad Grado en Relaciones Laborales y Recursos Humanos

  1. 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

  2. El hombre con su contradicción: del desflorador avergonzado al "hombre color mujer". // The man with his contradiction: from ashamed deflowered to "woman-colored man".

    Directory of Open Access Journals (Sweden)

    Fredy Ricardo Moreno Chía.

    2009-12-01

    Full Text Available The basis of this article is the idea that “the masculine” has an internal contradiction. This is supported by some freudian references, and brought out by Jacques Lacan’s formulations, particularly in his sexuation theory and his innovations on the borromean knot. We wonder how these statements explain the internal contradiction of masculinity, and we look for a possible answer in Lacan’s assertion that there is a “woman-colored man”, whose context corresponds to his theory of the sinthome. // El presente trabajo parte de la idea según la cual “lo masculino” posee una contradicción interna. Esta idea que es sustentada en algunas referencias freudianas es puesta a la luz de las formulaciones de Jacques Lacan, en particular su teoría de la sexuación y sus desarrollos en torno al nudo borromeo. Nos preguntamos cómo estas formulaciones dan cuenta de esa contradicción interna de la masculinidad, e intentamos una posible respuesta en la afirmación de Lacan, según la cual hay “hombre color mujer” y cuyo contexto corresponde a su teoría acerca del sinthome.

  3. LA ESCASA APLICACIÓN DE LA TEORÍA DE RESPUESTA AL ÍTEM EN TESTS DE EJECUCIÓN TÍPICA

    Directory of Open Access Journals (Sweden)

    Facundo Juan Pablo Abal

    2010-01-01

    Full Text Available El objetivo de este trabajo fue exponer los factores que explicanla escasa aplicación de la Teoría de Respuesta al Ítem(TRI en tests de ejecución típica. Una revisión exploratoriade la literatura psicométrica permitió identificar dos factores:el histórico, que remite a problemas en la difusión de la TRIpor fuera del campo educativo y a las demandas sociales queprivilegiaron su aplicación en el contexto educativo; y el factorasociado a la aplicación, que describe los obstáculos que enla actualidad dificultan la puesta en práctica de los modelosen tests de ejecución típica. Aunque ambos factores fueronrelativamente superados, el impacto de estos en la produccióncientífica del área es aún significativo.

  4. 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.

  5. 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.

  6. 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.

  7. La puesta en valor del paisaje a través de la educación, propuesta para el desarrollo de la Isla de Vieques (Puerto Rico = The enhancement of landscape through education proposal for the development of the island of Vieques (Puerto Rico

    Directory of Open Access Journals (Sweden)

    María del Carmen Zorrilla Lassus

    2015-10-01

    Full Text Available La isla municipio de Vieques, Puerto Rico, es un territorio emblemático no solo para los puertorriqueños que lo habitan, sino para la población nacional e internacional que conoce sus largas luchas contra la Marina de los Estados Unidos, ara su salida del enclave, ocupado durante 60 años. Diez años más tarde de la retirada del cuerpo castrense, Vieques, también denominada Isla Nena, se enfrenta a grandes retos sociales, económicos y educativos para integrarse en la economía mundial y mejorar la calidad de vida de sus habitantes. Este artículo describe eventos puntuales del desarrollo histórico y cultural de la isla, enmarcados dentro de un conjunto de símbolos sociales que parten del entramado cultural y natural. Finalmente, se describe y presenta la autogestión empresarial a través del turismo sustentable como una estrategia educativa para la puesta en valor del paisaje natural y cultural como condición fundamental para el éxito del proyecto piloto «Mis recursos y yo… somos Puerto Rico» de la Universidad de Puerto Rico, comprometido en el desarrollo local.The island of Vieques, Puerto Rico, is a landmark not only for the Puerto Ricans who inhabit it, but for the population nationally and internationally known for their long struggles against the United States Navy out of the enclave, occupied for sixty years. Ten years after the withdrawal of the military body, Vieques faces great social, economic and educational challenges. This article describes specific events of the historical and cultural development of the island, framed within a set of social symbols that are based on natural and cultural framework. Finally, this article describes and presents self-management business through sustainable tourism as an educational strategy for the implementation of the value of the natural and cultural landscape as a fundamental condition for the success of the pilot project ‘My resources and I are Puerto Rico

  8. A posta principal da animação: pensar no atuar local e atuar no pensar global The locus of animation: thinking of local action and acting in global thinking La puesta principal de la animación: pensar en el actuar locar y en actuar local y actuar en el pensar global

    Directory of Open Access Journals (Sweden)

    2006-11-01

    Full Text Available Este artigo pesquisa a significação de um pensamento sistêmico, interacionista e dialético a propósito da animação dita “sociocultural” ou “social” em muitos países, mas que provém de uma animação profissional na França desde os anos sessenta (contudo não exclusivamente agora no mundo. Uma aproximação de tipo epistemológico, científico e teórico, junto a um descanso temático de pesquisa durante quase seis meses na América Latina, e depois na Europa, permite um olhar abrangente das postas da animação no contexto atual. PALAVRAS-CHAVE: animação – fenômeno da urbanização – hiper-especialização – novas tecnologias – o atuar e o pensar This article investigates the meaning of a sistemic, interactionist, and dialectic thought about animation, which is known in many countries as “sociocultural”, or “social”, but whihc originates from the professional animation developed in France from the 1960s. It is an epistemologic, scientific, and theoretical approach, based on an almost six-month long research internship in Latin America and then Europe, which allowed for the construction of a comprehensive analysis of the place of animation in the current context. KEYWORDS: coordination – urbanization phenomenon – hyper-specialization – new technologies – globalization Este artículo investiga la significación de un pensamiento sistémico, interaccionista y dialéctico a propósito de la animación dicha “sociocultural” o “social” en muchos países, pero que porviene de una animación profesional en Francia desde los años sesenta (sin embargo, no exclusivamente ahora en el mundo. Un acercamiento de tipo epistemológico, científico y teórico, junto a una vocación temática de investigación durante casi seis meses en América Latina, y después en Europa, que permite una vista alargada de las puestas de la animación en el contexto actual. PALABRAS-CLAVE: animación – fenómeno de

  9. OBSTÁCULOS AL APRENDIZAJE DEL CONCEPTO ESTRUCTURANTE EVOLUCIÓN BIOLÓGICA

    Directory of Open Access Journals (Sweden)

    Roger Araujo Llamas

    2014-05-01

    Full Text Available Se contrastaron los obstáculos en el aprendizaje del concepto evolución biológica reportados en publicaciones especializadas en la enseñanza de las ciencias,  con losen la implementación de un juego para enseñar evolución por selección natural. Lo anterior, se realizó mediante la revisión de antecedentes que permitieron identificar los obstáculos encontrados por otros investigadores y la puesta en marcha de la propuesta didáctica que posibilitó identificar y superar algunos de los mismos. Existen múltiples factores que dificultan la comprensión de la evolución biológica, componentes culturales, iconografía inapropiada, insuficiente preparación de los profesores, estrategias didácticas inadecuadas y apreciación negativa de la teoría evolutiva, son algunos de ellos. Por otra parte, algunas ideas previas propias del estudiante o transmitidas por el profesor pueden funcionar como obstáculos al aprendizaje de este concepto estructurante; el esencialismo biológico, las concepciones lamarckistas, la ortogénesis, la teleología, y no concebir el concepto de “miles de millones de años”, hacen parte de las explicaciones que los estudiantes suelen utilizar. Es pertinente señalar que, los obstáculos al aprendizaje de los estudiantes no son muy diferentes a los que tuvo que superar la biología para establecer su actual paradigma. Éstos, se superan en buena medida cuando se comprenden conceptos imprescindibles en el cambio de los sistemas vivos, como: especie biológica, población, variabilidad genética, herencia, azar, mutación, desarrollo ontogénico, filogenia, ancestro común, adaptación, selección natural y tiempo geológico.

  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. 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

  13. 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

  14. 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

  15. 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.

  16. 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 ...

  17. 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 ...

  18. 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 ...

  19. 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 ...

  20. 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)

  1. Contribución al desarrollo sostenible local de los proyectos MDL en el sector de generación eléctrica por biomasa: caso INCAUCA S.A.

    Directory of Open Access Journals (Sweden)

    Carlos Andrés Vergara Tamayo

    2016-01-01

    Full Text Available La declaración presentada por la comunidad internacional a mediados del siglo XX frente al reconocimiento del fenómeno del cambio climático, dio origen a propuestas de la comunidad para la creación de mecanismos orientados al control y a la reducción de sus causas. Una de estas propuestas es el Protocolo de Kyoto, el cual tiene por objetivo la reducción de los Gases Efecto Invernadero (GEI causantes del calentamiento global. Dicho protocolo planteó tres iniciativas, pero, tan solo una de ellas involucra la participación de países en vía de desarrollo como es el caso de Colombia; se trata de los Proyectos de Mecanismo de Desarrollo Limpio (MDL. En este sentido, el objetivo de este documento es comprender los aportes en términos del desarrollo sostenible local, a partir de la metodología multicriterio AHP, para el proyecto MDL de cogeneración y sustitución de combustible del Ingenio del Cauca S.A., registrado ante la Convención Marco de las Naciones Unidas para el Cambio Climático (CMNUCC. De este trabajo se concluye que no existe una diferencia importante entre la situación “con proyecto” y la situación “sin proyecto”, en otras palabras, la contribución al desarrollo social del Municipio de Miranda (Cauca, no está determinada por la puesta en marcha del proyecto MDL, sin embargo al analizar de manera global el ranking de las dos alternativas evaluadas es evidente que los actores involucrados prefieren la situación antes del proyecto que con este.

  2. 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.

  3. 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.

  4. 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

  5. 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.

  6. 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.

  7. 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.

  8. 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

  9. 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.

  10. 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.

  11. 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.

  12. Oxytocin, trust and corruption: a systemic theory of the road to authoritarism Oxitocina, confianza y corrupción: una teoría sistémica del camino al autoritarismo

    Directory of Open Access Journals (Sweden)

    Esteban Laso

    2012-07-01

    Full Text Available In this text I propose a systemic theory about the process through which societies become authoritarian. I postulate, at the micro or individual level, a triadic structure of tendencies towards others (trust, suspicion and hostility; and I link it, at the macro or social level, to a group of structural factors (inequity and distrust, triggers (social, economical or political crisis and catalysts (presence of a caudillo with a populist discourse and authoritarian leaning.  Finally, I present some guidelines for the empirical testing of this theory.

    En este texto propongo una teoría sistémica del proceso por el que las sociedades llegan al autoritarismo populista. Postulo, en el nivel individual o micro, una estructura triádica de disposiciones hacia el otro (confianza, suspicacia y hostilidad; y la vinculo, en el nivel social o macro, con un conjunto de factores estructurales (inequidad y desconfianza, sucesos precipitantes (crisis social, económica o política y catalizadores (presencia de un líder caudillista de discurso populista e inclinación autoritaria. Finalmente, expongo algunos lineamientos para la puesta a prueba empírica de esta teoría.

  13. La inserción al Asia-Pacífico, oportunidades y desafíos para el Valle del Cauca y la región pacífica colombiana

    Directory of Open Access Journals (Sweden)

    Ricardo Coutin

    2014-12-01

    Full Text Available Resumen: El objetivo general del texto es brindar una aproximación a los retos y las oportunidades que representa, para el Valle del Cauca y la Región Pacífica colombiana, la inserción al Asia-Pacífico. Para lo cual se plantean tres objetivos específicos: primero, analizar someramente el contexto económico comercial del Asia-Pacífico y América Latina, con especial énfasis en Colombia y los demás países de la Alianza del Pacífico (AP; segundo, estudiar las oportunidades y los retos para el Valle del Cauca y la Región Pacífica colombiana que plantea la puesta en escena del bloque comercial denominado Alianza del Pacífico; y tercero, indagar sobre los retos de competitividad y productividad que enfrenta el Valle del Cauca y que afectan el ambiente de negocios. El documento concluye que Colombia se encuentra rezagada en su inserción con la cuenca del Asia-Pacífico; también se plantea la necesidad de abordar el tema de estudio desde un enfoque subnacional.

  14. ¿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.

  15. 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.

  16. 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.

  17. 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.

  18. 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 ...

  19. 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 ...

  20. 180 - 184_ Farouk et al.,

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    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 ...

  1. 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.

  2. 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.

  3. 94 - 99_Nafiu et al.

    African Journals Online (AJOL)

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    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 ...

  4. 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...

  5. 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.

  6. Diagnósticos de enfermería al alta hospitalaria en personas con Síndrome Coronario Agudo

    Directory of Open Access Journals (Sweden)

    Clara Inés Padilla García

    2017-04-01

    Full Text Available Introducción: Enfermería juega un rol fundamental en las diferentes etapas de la atención de las personas con síndrome coronario agudo, entre ellas el egreso hospitalario. Brindar cuidado acorde a las necesidades propias de estas personas, requiere de la identificación de los principales diagnósticos de enfermería. Objetivo: Determinar la prevalencia de diagnósticos de Enfermería de las personas con síndrome coronario agudo al momento del alta hospitalaria. Metodología: Estudio de corte transversal en 196 personas hospitalizadas por el evento de interés, se utilizó instrumento de valoración focalizada que evaluaba las características definitorias de los diagnósticos de enfermería: ansiedad, afrontamiento ineficaz, disposición para mejorar la religiosidad, disposición para mejorar los conocimientos, intolerancia a la actividad; los cuales fueron identificados como prioritarios según la literatura científica y por consenso de expertos. Para determinar la prevalencia de los diagnósticos se realizó análisis de definición y características definitorias. Resultados: Se evidenció como principal problema de la población de estudio los conocimientos deficientes, seguido de la intolerancia a la actividad y la ansiedad. De igual forma se logró identificar diagnósticos positivos como la disposición para mejorar los conocimientos y la religiosidad. Conclusiones: El presente trabajo nos permitió identificar necesidades reales y reconocer factores protectores al momento del alta hospitalaria en personas que han vivido un evento coronario agudo, lo cual constituye un punto de partida para el diseño de planes de cuidado y la puesta en marcha de intervenciones que conduzcan a mejorar la situación de salud de este grupo de personas.

  7. 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.

  8. 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...

  9. 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.

  10. 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.

  11. "Del archivo al concierto": un itinerario para la recuperación teórica y práctica del barroco musical hispánico

    Directory of Open Access Journals (Sweden)

    Ezquerro Esteban, Antonio

    2013-12-01

    í conscientemente acotado al ámbito hispánico de los siglos XVII y XVIII, desde la localización documental de los manuscritos en los archivos, su transcripción, estudio y posterior edición crítica por parte del musicólogo, hasta su puesta en práctica por el músico con la interpretación pública en concierto.

  12. 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.)

  13. 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.

  14. 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.

  15. 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.

  16. Del genio al ángel caído: Ecos de Hölderlin en la poesía de Leopoldo María Panero

    Directory of Open Access Journals (Sweden)

    Ruano, Joaquín

    2015-12-01

    Full Text Available The works of Spanish poet Leopoldo María Panero (Madrid, 1948 are a part of the current of Modernity that questions the hegemonic —literary and moral— discourse of its time by reflecting on the meaning of Evil in this discourse. One of the key references in this questioning are the works of German Romantic Friedrich Hölderlin, from which Panero recovers the notion of a lost Golden Age, as well as an inevitably head toward failure quest of the Absolute. But, beyond intertextual references, Hölderin becomes a recurrent topic in Panero’s poetry, as an alter ego of the poet wasted away with madness.La obra del autor español Leopoldo María Panero (Madrid, 1948 se inserta en una de las vertientes de la modernidad que pone en cuestión el discurso hegemónico —literario y moral— de su tiempo reflexionando sobre el significado del mal en dicho discurso. Una de las referencias clave en esa puesta en cuestión paneriana es la obra del romántico alemán Friedrich Hölderlin, de la cual Panero recuperará la noción de una Edad de Oro perdida, así como una búsqueda del absoluto abocada irremediablemente al fracaso. Pero, más allá de las referencias intertextuales, Hölderlin se convertirá en una figura recurrente en la poesía de Panero, como alter ego del poeta consumido por la locura.

  17. 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

  18. 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

  19. 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.

  20. 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 ...

  1. 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)

  2. 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).

  3. 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.

  4. 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.

  5. 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

  6. 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

  7. 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.

  8. 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.

  9. 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 ...

  10. 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.

  11. 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

  12. 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) ...

  13. 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

  14. 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 ...

  15. 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

  16. 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.

  17. 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...

  18. Contribución al estudio, cálculo y diseño de soleras de hormigón en masa para la actividad agroindustrial

    Directory of Open Access Journals (Sweden)

    Ferrer F., Carlos

    2000-04-01

    Full Text Available Slabs and especially industrial floors are construction elements whose design and execution usually depend on the experience of the engineer and the building firm. In the construction industry, as in the rest of the industrial fields, work of a specialized nature requiring a high level of quality is becoming the norm. In accordance with these new requirements we have tried to establish the bases of a calculus procedure that provides the design engineer with an efficient tool that allows for the design of agroindustrial ground slabs with adequate security guarantees and correct behaviour. Existing design procedures for the sort of concrete pavements that, because of their structural importance, have been properly studied, such as concrete pavements used in airports, highways and roads, have been extrapolated and adapted to industrial slabs design. A Finite Element Method has been selected as a structural calculus tool. ANSYS v.5.2 software has been used. Loads considered and applied on the model have been chosen and taken from within fruit storage and distribution warehouses. Most important and common from them are those due to electric forklift trucks. The analytical study carried out carne to conclusions and design considerations. A graphical design abacus have been obtained.Las soleras de hormigón en general, y las industriales en particular son un elemento constructivo cuyo diseño y ejecución correctos son debidos, fundamentalmente, a la experiencia con que cuenten el ingeniero proyectista y la empresa constructora. Las cada vez mayores exigencias de calidad, aplicadas tanto a la puesta en obra como a la redacción de proyectos, unido a la ausencia de una normativa a nivel nacional específica, nos llevo a tomar la decisión de idear un procedimiento de cálculo, que, apoyado en otros existentes para otro tipo de pavimentos, nos permitiera abordar el diseño con garantías suficientes, sobre todo para el caso de soleras comprometidas

  19. 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

  20. 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...

  1. 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

  2. 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

  3. 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

  4. 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.

     

  5. 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.

  6. 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.)

  7. La tutela efectiva de la creación de contenidos e-learning: una solución en las excepciones al derecho de autor

    OpenAIRE

    López Rodríguez, Fernando; Peire Arroba, Juan

    2015-01-01

    La evolución de la tecnología ha llevado, necesariamente, a un desarrollo de los derechos de autor y de la Propiedad Intelectual. Estas evidencias se refieren a la relevancia por la puesta en funcionamiento de las plataformas tecnológicas en relación

  8. 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.)

  9. 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

  10. 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

  11. 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...

  12. 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

  13. 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.

  14. Aproximación Histórica al Concepto de Lógica: Avances Parciales de una Investigación que Promueve la Experiencia Estética en Maestros en Formación en Matemáticas y Literatura

    Directory of Open Access Journals (Sweden)

    Rubén Darío Henao Ciro

    2015-08-01

    Full Text Available El texto muestra una aproximación histórica al concepto de lógica en relación con la matemática. Así: expone los aportes de la lógica antigua y la medieval, y problematiza los planteamientos del logicismo y el intuicionismo, con la idea de proponer la razonabilidad estética a partir de la teoría de la abducción de Charles Sanders Peirce. Más adelante, argumenta los fundamentos de la investigación cualitativa con enfoque hermenéutico. Finalmente, propone el desarrollo de la razonabilidad estética a partir del diseño y la puesta en escena de una estrategia didáctica, apoyada en el análisis de relatos de ficción y artículos de investigación. Los primeros resultados de la estrategia muestran que los maestros en formación, tanto en literatura como en matemáticas, en la Universidad de Antioquia, desconocen las posibilidades lógicas y creativas que se pueden vivenciar e identificar en los textos literarios y científicos. Esta dificultad sugiere la importancia de seguir avanzando en el diseño y la vivencia de la estrategia didáctica

  15. 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.

  16. Impacto de la panhisterectomía en la calidad de vida de la mujer

    Directory of Open Access Journals (Sweden)

    Miriam García Tirada

    2000-10-01

    Full Text Available Se encuestaron 85 pacientes menopáusicas de la consulta de climaterio-menopausia del Hospital General Docente "Enrique Cabrera" durante el año 1988. A los efectos del estudio se conformaron 2 grupos; pacientes castradas quirúrgicamente y pacientes con menopausia natural, 59 y 41 % respectivamente. Se seleccionaron 12 pacientes con menopausia natural y 23 castradas a las que se le realizó una entrevista y 3 pruebas psicológicas para registrar niveles de ansiedad situacional y personal, explorar conflictos que tiene la paciente y constatar el desarrollo de su autoestima. En el 36 % de las pacientes castradas la menopausia se presentó antes de los 40 años de edad. Los síntomas más frecuentes en ambos grupos fueron: el bochorno, sudación, ansiedad, insomnio e irritabilidad. El 62 % de las pacientes castradas refirieron síntomas antes del mes de haber sido intervenidas. En el grupo de pacientes con estudio psicológico encontramos un nivel alto de ansiedad-estado en el grupo de castradas, 74 % siendo de un 17 % en las pacientes con menopausia natural. En ambos grupos la ansiedad peculiar se conportó de forma similar, al igual que el daño de la autoestima, aunque más deteriorada en mujeres con menopausia natural. El motivo de la castración en el 70 % de los casos fue el fibroma uterino85 menopausal patients from the climacteric-menopausia consulting room of "Enrique Cabrera" General Teaching Hospital were surveyed during 1998. Patients were divided into 2 groups: patients with surgical menopause and patients with natural menopause, 59 and 41 %, respectively. 12 patients with natural menopause and 23 castrated were selected and interviewed. They also underwent 3 psychological tests to register levels of situational anxiety, to determine the conflicts of the patient and to check the development of self concept. Menopause appeared before the age of 40 in 36 % of the castrated patients. The most frequent symptoms in both groups were: hot

  17. Menopause and menopausal hormone therapy in women: cardiovascular benefits and risks

    Directory of Open Access Journals (Sweden)

    Anna Svatikova

    2018-01-01

    Full Text Available The last decade has brought many challenges and uncertainties regarding the use of menopausal hormone therapy in women. Two early key studies, the Heart and Estrogen/Progestin Replacement Study (HERS and the Women's Health Initiative (WHI failed to prove beneficial effects of exogenous estrogen, and estrogen combined with progestin, in cardiovascular prevention. More recent studies, however, introduced the concept of a possible “window-of-opportunity” for hormonal therapy, in which menopausal hormone therapy is used early after the onset of menopause, and may lead to more favorable, cardio-protective outcomes. Despite the increasing wealth of clinical data, menopausal hormone therapy is not currently recommended for primary or secondary prevention of coronary heart disease in women. Further research is needed to understand the risk-benefit balance of menopausal hormone therapy. Resumen: La última década ha traído muchos retos e incertidumbres respecto al uso de la terapia hormonal en la menopausia en mujeres. Dos estudios tempranos clave, el Heart and Estrogen/Progestin Replacement Study (HERS [Estudio del Corazón y Reemplazo de Estrógeno/Progestina] y la Womeńs Health Initiative (WHI [Iniciativa de Salud de la Mujer] no pudieron demostrar los efectos benéficos del estrógeno exógeno y el estrógeno combinado con la progestina, en la prevención cardiovascular. Sin embargo, estudios más recientes han introducido el concepto de una posible “ventana de oportunidad” para la terapia hormonal, en donde la terapia hormonal en la menopausia se emplea tempranamente luego del inicio de la menopausia, y que puede llevar a resultados más favorables y cardioprotectores. A pesar de la creciente riqueza en datos clínicos, en la actualidad no se recomienda la terapia hormonal en la menopausia para la prevención primaria o secundaria de la enfermedad coronaria en mujeres. Se requiere m

  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. 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

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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

  9. 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

  10. 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.

  11. 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...

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. El estado del arte de la tecnología al servicio de la construcción

    Directory of Open Access Journals (Sweden)

    Lopez Peñalver, Francisco Javier

    2004-12-01

    evolutiva de acuerdo a las tecnologías que conocemos en la actualidad, atendiendo a las ofertas y demandas del mercado.La integración, aplicación y puesta en marcha de la combinación de tecnologías en la arquitectura del hogar, se conoce en la actualidad como Domótica, aunque ni siquiera el término que se maneja parece complacer en cierta medida a los vinculados al sector. Cierto es que en lo que se está de acuerdo es en que el objetivo de toda esta evolución es conseguir aplicaciones y servicios de utilidad para todos los habitantes del hogar o de una comunidad.En este artículo se presenta una visión global sobre todo lo que rodea al nuevo concepto de “Entorno Inteligente”, distinguiendo sus orígenes, aportaciones, el entorno social que lo envuelve, así como la mención a las distintas tecnologías y servicios existentes, siempre destacando el crecimiento progresivo del concepto.

  18. 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

  19. 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.

  20. 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,

  1. 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

  2. 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

  3. 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. ÷. ÷.

  4. 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 ...

  5. 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...

  6. 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

  7. 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.

  8. 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

  9. 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...

  10. 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.

  11. 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

  12. 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.

  13. 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.

  14. 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

  15. 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

  16. 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.

  17. 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.)

  18. 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.)

  19. 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.

  20. 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.

  1. 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

  2. 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.

  3. 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

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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

  10. [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

  11. 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.

  12. 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.' ' '

  13. 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.

  14. 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.

  15. 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...

  16. 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.)

  17. 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.).

  18. 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.

  19. Development and start up of a co-injection system of coal tar/natural gas in blast furnace no. 4; Desarrollo y puesta en operacion de un sistema de co-inyeccion de alquitran/gas natural en el alto horno no. 4

    Energy Technology Data Exchange (ETDEWEB)

    Falcon Rodriguez, Manuel I; Mata Esparza, Hector Rolando; Arevalo Ballesteros, Gerardo [Altos Hornos de Mexico S. A., Coahuila (Mexico)

    1994-12-31

    . [Espanol] La crisis de energia ha acaparado la atencion mundial sobre la necesidad de conservar la energia y desarrollar en un mayor grado el uso de combustibles en base a carbon y otras fuentes de energia (energia nuclear). Siendo el alto horno no solo un consumidor de energia sino tambien un generador de la misma (gas alto horno), la mayor contribucion al costo de arrabio es la energia necesaria para fundir y reducir al estado metalico los minerales de fierro, dicha energia en su mayoria proviene del coque. La dependencia del carbon via planta de coque para producir hierro de primera funcion se incrementa cada dia como resultado de los altos niveles de produccion. Altos Hornos de Mexico (AHMSA), contemplo dentro de su plan estrategico la disminucion de produccion de sus plantas coquizadoras derivada del envejecimiento natural de sus hornos, consecuencia de esto se hace inminente el deficit de coque para producciones superiores a 2.6 MMt de arrabio. La inyeccion de combustibles al alto horno a traves de sus toberas es una tecnologia para disminuir el consumo de coque, su uso implica un cambio en la filosofia de operacion del alto horno y es actualmente utilizada por la mayoria de los altos hornos del mundo. AHMSA aprovechando la generacion de alquitran (aprox. 130 ton/dia) de sus plantas coquizadoras decide disenar y poner en operacion un sistema de co-inyeccion de alquitran y gas natural, las actividades encaminadas a realizar lo anterior dieron inicio el mes de abril de 1993 efectuandose todas ellas con recursos propios de la empresa, finalizando el dia 18 de julio de 1993 dia en el cual se inicio la co-inyeccion de alquitran/gas natural en el Alto Horno no. 4 en forma estable. A la fecha (octubre 1993), la inyeccion de alquitran se ha incrementado hasta 36 kg/t. de arrabio, durante los periodos de inyeccion, la presencia de problemas operativos, mecanicos y de instrumentacion no han sido obstaculo para la evolucion de la inyeccion cumpliendo su funcion de sustituir al

  20. Development and start up of a co-injection system of coal tar/natural gas in blast furnace no. 4; Desarrollo y puesta en operacion de un sistema de co-inyeccion de alquitran/gas natural en el alto horno no. 4

    Energy Technology Data Exchange (ETDEWEB)

    Falcon Rodriguez, Manuel I.; Mata Esparza, Hector Rolando; Arevalo Ballesteros, Gerardo [Altos Hornos de Mexico S. A., Coahuila (Mexico)

    1993-12-31

    . [Espanol] La crisis de energia ha acaparado la atencion mundial sobre la necesidad de conservar la energia y desarrollar en un mayor grado el uso de combustibles en base a carbon y otras fuentes de energia (energia nuclear). Siendo el alto horno no solo un consumidor de energia sino tambien un generador de la misma (gas alto horno), la mayor contribucion al costo de arrabio es la energia necesaria para fundir y reducir al estado metalico los minerales de fierro, dicha energia en su mayoria proviene del coque. La dependencia del carbon via planta de coque para producir hierro de primera funcion se incrementa cada dia como resultado de los altos niveles de produccion. Altos Hornos de Mexico (AHMSA), contemplo dentro de su plan estrategico la disminucion de produccion de sus plantas coquizadoras derivada del envejecimiento natural de sus hornos, consecuencia de esto se hace inminente el deficit de coque para producciones superiores a 2.6 MMt de arrabio. La inyeccion de combustibles al alto horno a traves de sus toberas es una tecnologia para disminuir el consumo de coque, su uso implica un cambio en la filosofia de operacion del alto horno y es actualmente utilizada por la mayoria de los altos hornos del mundo. AHMSA aprovechando la generacion de alquitran (aprox. 130 ton/dia) de sus plantas coquizadoras decide disenar y poner en operacion un sistema de co-inyeccion de alquitran y gas natural, las actividades encaminadas a realizar lo anterior dieron inicio el mes de abril de 1993 efectuandose todas ellas con recursos propios de la empresa, finalizando el dia 18 de julio de 1993 dia en el cual se inicio la co-inyeccion de alquitran/gas natural en el Alto Horno no. 4 en forma estable. A la fecha (octubre 1993), la inyeccion de alquitran se ha incrementado hasta 36 kg/t. de arrabio, durante los periodos de inyeccion, la presencia de problemas operativos, mecanicos y de instrumentacion no han sido obstaculo para la evolucion de la inyeccion cumpliendo su funcion de sustituir al

  1. 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

  2. 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...

  3. 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

  4. (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.

  5. 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...

  6. 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

  7. 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

  8. 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.

  9. 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.

  10. 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 ...

  11. 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.

  12. 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

  13. 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

  14. 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.

  15. 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...

  16. 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.

  17. 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.

  18. 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.

  19. 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.

  20. 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

  1. 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.

  2. 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.

  3. 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.

  4. 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)

  5. 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.

  6. 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

  7. 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.

  8. 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

  9. 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

  10. 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.

  11. 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.

  12. 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.

  13. 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)

  14. 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 .

  15. 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.

  16. 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)

  17. 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

  18. 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.

  19. 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...

  20. 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

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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

  7. 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.

  8. 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)

  9. 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.

  10. 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.

  11. 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.)

  12. 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 .

  13. 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.

  14. 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.

  15. 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...

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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)

  1. 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

  2. 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.

  3. 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.)

  4. 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.

  5. [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.

  6. 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.

  7. 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....

  8. 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...

  9. 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...

  10. 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

  11. 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

  12. 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)

  13. 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)

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. 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%.

  19. 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).

  20. 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

  1. 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

  2. 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

  3. 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

  4. 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...

  5. 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

  6. 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.

  7. 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

  8. 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.

  9. 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.

  10. 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

  11. 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

  12. 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.

  13. 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

  14. 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

  15. 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

  16. 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.

  17. 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.

  18. 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

  19. 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.)

  20. 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.)

  1. 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.

  2. 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].

  3. 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.

  4. 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 ...

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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...

  10. 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,.

  11. 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

  12. 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.

  13. 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...

  14. 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...

  15. 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...

  16. 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…

  17. 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…

  18. 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.

  19. 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...

  20. 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)

  1. 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.)

  2. 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 ...

  3. 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...

  4. 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

  5. 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.

  6. Un aporte de Carlos Guastavino y Lima Quintana al mundo de la Nueva Canción argentina Carlos Guastavino and Lima Quintana's contribution to the world of the Argentinean New Song

    Directory of Open Access Journals (Sweden)

    Silvina Luz Mansilla

    2011-06-01

    Full Text Available El artículo se refiere a la canción Hermano compuesta por el músico Carlos Guastavino sobre una poesía de Hamlet Lima Quintana. Dedicada al editor Rómulo Lagos, fue grabada por Mercedes Sosa en 1966. Incluida como pista inicial del disco de la cantante tucumana al cual le dio su nombre, la canción constituye una evidencia de la simpatía del compositor con los postulados centrales del Nuevo Cancionero argentino. El trabajo comprende una aproximación a la temática del poema, el análisis musical de la partitura, la puesta en contexto de las circunstancias de composición y difusión y la descripción de la versión grabada por Mercedes Sosa. Aplicando la noción "mundos del arte" de Howard BECKER (1982, se interpreta la red de personas ligadas a la editorial Lagos como un tejido cooperativo que funcionó con eficacia hasta mediados de la década de 1970. Un esbozo del contexto posterior, signado por la censura, permite inferir algunos factores que incidieron en el quiebre de esa red de colaboraciones. Aunque respecto de Guastavino, se habla aquí de vinculación y no de pertenencia.Study about the song Hermano by Argentinean composer Carlos Guastavino written after a poem by Hamlet Lima Quintana. Dedicated to the editor Rómulo Lagos, the song was recorded by the Argentinean singer Mercedes Sosa in 1966. Included as the first track in that record (to which it gave its name, the song constitutes an evidence of the composer's sympathy with the central postulates of the Argentinean New Song. This paper's perspective integrates the poem's subject, the score's musical analysis, the study of the context concerning with the composition and spreading circumstances and the description of the performance recorded by Mercedes Sosa. Applying the notion of "art worlds" by Howard BECKER (1982, we interpret the persons net connected with Lagos publishing, as a co-operative and interwoven fabric that effectively worked until the mid 1970s. A sketch of

  7. 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.

  8. 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.

  9. 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.``

  10. 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.

  11. 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.

  12. 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

  13. 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

  14. 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...

  15. 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

  16. 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.

  17. 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...

  18. 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.

  19. 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.

  20. 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.