Sample records for para inyectarse drogas

  1. Pincharse sin infectarse: estrategias para prevenir la infección por el VIH y el VHC entre usuarios de drogas inyectables

    PubMed Central

    MATEU-GELABERT, P.; FRIEDMAN, S.; SANDOVAL, M.

    2011-01-01

    Resumen Objetivo Desde principios de los noventa, en la ciudad de Nueva York se han implementado con éxito programas para reducir la incidencia del virus de la inmunodeficiencia humana (VIH) y, en menor medida, del virus de la hepatitis C (VHC). A pesar de ello, aproximadamente el 70% de los usuario de drogas inyectables (UDI) están infectados por el VHC. Queremos investigar cómo el 30% restante se las ha arreglado para no infectarse. El Staying safe (nombre original del estudio) explora los comportamientos y mecanismos que ayudan a evitar la infección por el VHC y el VIH a largo plazo. Material y métodos Hemos utilizado el concepto de «desviación positiva» aplicado en otros campos de salud pública. Estudiamos las estrategias, prácticas y tácticas de prevención de aquellos UDI que, viviendo en contextos de alta prevalencia, se mantienen sin infectar por VIH y el VHC, a pesar de haberse inyectado heroína durante años. Los resultados preliminares presentados en este artículo incluyen el análisis de las entrevistas realizadas a 25 UDI (17 doble negativos, 3 doble positivos y 5 con infección por el VHC y sin infección por el VIH). Se usaron entrevistas semiestructuradas que exploraban con detalle la historia de vida de los sujetos, incluyendo su consumo de drogas, redes sociales, contacto con instituciones, relaciones sexuales y estrategias de protección y vigilancia. Resultados La intencionalidad es importante para no infectarse, especialmente durante períodos de involución (períodos donde hay un deterioro económico y/o social que llevan al que se inyecta a situaciones de mayor riesgo). Presentamos tres dimensiones independientes de intencionalidad que conllevan comportamientos que pueden ayudar a prevenir la infección: a) evitar «el mono» (síntomas de abstención) asegurando el acceso a la droga; b) «llevarlo bien» para no convertirse en un junkie y así evitar la «muerte social» y la falta de acceso a los recursos, y c) seguir sin infectarse por el VIH (sólo un doble negativo tuvo un amplio conocimiento sobre la hepatitis C). Estas intencionalidades no son mutuamente excluyentes. La presencia de varias refuerza la puesta en práctica a diario de comportamientos que pueden ayudar al que se inyecta a mantenerse libre de infecciones durante años. Algunas prácticas que hemos identificado se implementan en grupo y se comunican de UDI a UDI, de esta manera se extienden entre algunas redes sociales de UDI. Conclusiones Los UDI que permanecen sin infectarse planean e implementan estrategias de prevención en circunstancias donde otros UDI aplican prácticas de riesgo. El mantenimiento de la no infección no es, por lo tanto, un resultado del azar, sino más bien el resultado del esfuerzo (agencia) de los UDI. Investigar y extender estas estrategias y tácticas a través de programas de prevención podría contribuir a la prevención del VIH y el VHC. PMID:21915175

  2. Violencia de Pareja en Mujeres Hispanas: Implicaciones para la Investigación y la Práctica

    PubMed Central

    Gonzalez-Guarda, Rosa Maria; Becerra, Maria Mercedes

    2012-01-01

    Las investigaciones sobre la violencia entre parejas sugieren que las mujeres hispanas están siendo afectadas desproporcionadamente por la ocurrencia y consecuencias de este problema de salud pública. El objetivo del presente artículo es dar a conocer el estado del arte en relación a la epidemiologia, consecuencias y factores de riesgo para VP entre mujeres Hispanas, discutiendo las implicaciones para la investigación y la práctica. Investigaciones han demostrado una fuerte asociación del status socioeconómico, abuso de droga y el alcohol, la salud mental, aculturación, inmigración, comportamientos sexuales riesgosos e historia de abuso con la violencia entre parejas. Sin embargo, más estudios se deben llevar a cabo para identificar otros factores de riesgos y de protección a poblaciones hispanas no clínicas. Mientras que el conocimiento sobre la etiología de la VP entre mujeres Hispanas se expanda, enfermeras y otros profesionales de la salud deben desarrollar, implementar y evaluar estrategias culturalmente adecuadas para la prevención primaria y secundaria de la violencia entre pareja.

  3. ¿Crecer para exportar o exportar para crecer?

    Microsoft Academic Search

    Julio César Alonso; Carlos Patiño

    2005-01-01

    Este documento investiga la validez de la hipótesis de crecimiento económico basado en el incremento de las exportaciones empleando datos anuales para el Valle del Cauca durante el periodo 1960 – 2000. No se encuentra evidencia suficiente para validar la relación causal que supone la hipótesis de crecimiento económico basado en exportaciones. Se emplea un modelo VAR que incluye la

  4. Problemas para dormir

    Cancer.gov

    Dormir bien es importante para su salud física y mental. Un buen sueño en la noche no solo le ayuda a pensar claramente, también le baja su presión arterial, ayuda su apetito y fortalece su sistema inmunitario.

  5. Software para generación de cuestionarios

    Microsoft Academic Search

    Banco Interamericano de Desarrollo

    2008-01-01

    La presentación muestra el sistema informático completo y los procesos utilizados por el Departamento Administrativo Nacional de Estadística de Colombia para el relevamiento y procesamiento de datos y para la generación de información. Luego, se describe en detalle y a través de capturas de pantalla las características y funcionalidades del software para la gestión de los datos (GEA) que permite

  6. Sistema de Guiado Automtico para Altas Velocidades

    E-print Network

    Boyer, Edmond

    autónomo circulando en autopistas. Para ello, se ha desarrollado un sistema de control de dirección para conseguir un nuevo impulso en la política en materia de seguridad vial para la próxima década. Desde el

  7. Importantes avances para la nueva dramaturgia mexicana

    E-print Network

    Burgess, Ronald D.

    1985-10-01

    expresión para la élite que tenga el dinero para poderlo pagar.'' ENTRE LAS POLÍTICAS A SEGUIR "Que se les proporcione la asesoría de arquitectos en forma gratuita para que los sitios tengan una funcionalidad y seguridad necesarias. En cuanto al...

  8. AYUDA PARA INVIDENTES UTILIZANDO TELEFONOS

    E-print Network

    Autonoma de Madrid, Universidad

    Aut´onoma de Madrid. El programa hace uso de informaci´on cartogr´afica y GPS. Permite llegar a sitios´es recorrerlas. La informaci´on que da el tel´efono son indicaciones por voz, aunque tambi´en se incluye informaci´on gr´afica para una persona con vista normal que realice la funci´on de acompa~nante o gu´ia. La

  9. Estudios ALCHEMIST para el cáncer de pulmón

    Cancer.gov

    Conjunto de información sobre los estudios ALCHEMIST para el cáncer de pulmón, los cuales examinarán los tejidos de tumores de pacientes con cáncer de pulmón en estadio inicial para detectar mutaciones genéticas en genes EGFR y ALK.

  10. Fundo Global para o Meio Ambiente

    E-print Network

    #12;#12;Fundo Global para o Meio Ambiente Global Environment Facility Avaliação dos Recursos de Climáticos Center for Weather Forecasts and Climate Studies Programa das Nações Unidas para o Meio Ambiente Ambiente - PNUMA Fundo Global para o Meio Ambiente (Global Environment Facility) - GEF Projeto SWERA

  11. Proyecto de Investigacin (Proyecto para Jovenes Investigadores)

    E-print Network

    Mejia-Alvarez, Pedro

    de nuevos modelos, métodos de planificación y herramientas para el diseño y validación de sistemas deProyecto de Investigación (Proyecto para Jovenes Investigadores) Planificación de Sistemas de Resumen Los sistemas de tiempo real se utilizan para controlar y monitorizar procesos industriales

  12. inter-establecimientos de investigacin para

    E-print Network

    sociales, en una perspectiva de desarrollo sostenible. La agencia es autoridad contratante delegada paraL'Agencia inter-establecimientos de investigación para el desarrollo La AIRD: una agencia AIRD, agencia inter-establecimientos de investigación para el desarrollo1 , fue creada oficialmente por

  13. Protocolo de espacios para unidades externas 1 PROTOCOLO DE ESPACIOS PARA PERSONAL Y

    E-print Network

    Escolano, Francisco

    Protocolo de espacios para unidades externas 1 PROTOCOLO DE ESPACIOS PARA PERSONAL Y ESTANCIAS DE UNIDADES EXTERNAS INDICE: ­ Acceso al protocolo de espacios para externos ­ ¿Cómo acceder al protocolo? ­ Solicitud de clave ­ Pasos necesarios para cumplimentar el protocolo de espacios ­ Página principal del

  14. Tecnologa para todos Sistema Inalmbrico de Rice

    E-print Network

    Tecnología para todos Sistema Inalámbrico de Rice Andrea Trevino Rice University http://www.techforall.org/tfa_wireless.html http://tfa.rice.edu #12;Por qué en Pecan Park? La Misión de TFA: Proporcionar conocimientos a la comunidad. El propósito de Rice: Usar este programa para explorar la siguiente generación del sistema

  15. Esta Preparado? Gua para los Tejanos en

    E-print Network

    ¿Esta Preparado? Guía para los Tejanos en caso de un Huracan Informacion de evacuacion Información://www.texasonline.com/portal/tol/es/emergency/specialneeds. Para Mas Informacion Oficina del Servicio Nacional de Meteorólogos - http://www.weather.gov/ os acompañan. Los tres son ciclones - sistemas organizados del clima que se desarrollan en los trópicos. Cada

  16. ¿APRENDO TRABAJANDO O APRENDER PARA TRABAJAR?

    Microsoft Academic Search

    Zahira Ojeda Bello; Misalys Hernández Pérez

    2009-01-01

    Los jóvenes cubanos, a diferencia de lo que viven muchos jóvenes en el mundo tienen garantizado el empleo y una legislación que los protege. Una vez graduados deben cumplir su servicio social y además se prevé una etapa de adiestramiento laboral, para lograr la adaptación y capacitación como trabajador en una entidad. Teniendo en cuenta la importancia que tiene para

  17. PROCEDIMIENTO para reservar espacios en Difusin

    E-print Network

    Islas, León

    MANUAL DE PROCEDIMIENTO para reservar espacios en Difusión Departamento de Difusión FACULTAD DE Departamento de Difusión, ubicado en la planta baja del edificio G. Acto seguido se verificarán los espacios y procedimiento para reservar espacios de difusión 2. El original de la Solicitud de Sala de Actos y Auditorio

  18. Ciudades inteligentes: beneficios para la inclusin social

    E-print Network

    Escolano, Francisco

    Ciudades inteligentes: beneficios para la inclusión social http://www.iuii.ua.es/CatedraTelefonicaUA/smart-cities Universidad de Alicante Inscripción gratuita a través del formulario http://www.iuii.ua.es/smart-cities trasladar los conceptos de Smart City al ámbito de la Universidad para lograr el objetivo de mejora de la

  19. Taller de Ciencia para Jvenes para alumnos de bachillerato San Cristobal de las Casas, Chiapas

    E-print Network

    Bor, Gil

    Taller de Ciencia para Jóvenes para alumnos de bachillerato San Cristobal de las Casas, Chiapas 3-7 agosto, 2009 CONVOCATORIA El "Taller de Ciencia para Jóvenes" en San Cristobal de las Casas (Chiapas), está dirigido a los alumnos de escuelas de nivel bachillerato que se sienten atraidos a las ciencias

  20. Estudio Exploratorio de los Factores para el Desarrollo de Sistemas de Informacion para Dispositivos Moviles

    Microsoft Academic Search

    Juan Manuel Gomez Reynoso; Juan Francisco Lozano Quezada; Monica del Refugio Brizuela Sandoval; Estela Lizbeth Munox Andrade; Carlos Argelio Arevalo Mercado

    2009-01-01

    Las limitaciones de los dispositivos móviles en cuanto a hardware, software, tamaño, entre otras, implican poner atención especial en el diseño de sistemas de información (SI) para los mismos. Las empresas necesitan reaccionar con rapidez al ambiente comercial tan cambiante, para no ser desplazadas en el mercado. La tecnología móvil está teniendo un gran auge para que las empresas respondan

  1. Becas de carcter general para el curso acadmico 2014-2015, para estudiantes que

    E-print Network

    Escolano, Francisco

    todos los estudios (estar en alguno de los siguientes casos): Requisitos Académicos (los créditosBecas de carácter general para el curso académico 2014-2015, para estudiantes que cursen estudios superior nivel al correspondiente al de los estudios para los que se solicita la beca. Ser español o tener

  2. Semana Nacional de Preparacin para Clima Severo 2014 Pgina 1 Plantilla para artculos de blog

    E-print Network

    auspiciada por la Agencia Federal para el Manejo de Emergencias (FEMA, por sus siglas en inglés) y la. ¿Qué puede hacer parar prepararse? Conocer su riesgo, tomar acción, y servir como ejemplo a la puede tomar para estar mejor preparado para salvar su vida y la de otros. Conozca su riesgo: Ya sean

  3. Leucemia–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento de la leucemia, así como referencias a estudios clínicos, investigación, estadísticas y otros temas relacionados con este tipo de cáncer.

  4. Tumores cerebrales–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento de los tumores cerebrales, así como referencias a estudios clínicos, estadísticas y otros temas relacionados con estos tipos de cáncer.

  5. Cáncer de riñón –para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento del cáncer de riñón, así como referencias a estudios clínicos, investigación, estadísticas y otros temas relacionados con este tipo de cáncer.

  6. Fatiga–para profesionales de salud (PDQ®)

    Cancer.gov

    Resumen de información revisada por expertos acerca de la fatiga, una afección caracterizada por extremo cansancio e incapacidad para funcionar por la falta de energía, que a menudo se observa como una complicación del cáncer y su tratamiento.

  7. Delirio –para profesionales de salud (PDQ®)

    Cancer.gov

    Resumen de información revisada por expertos acerca del delirio como una complicación a causa del cáncer o su tratamiento. Se discuten los enfoques de los cuidados médicos de apoyo, asi como farmacológicos para el manejo del delirio.

  8. Neuroblastoma–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento y los exámenes de detección del neuroblastoma, así como referencias a estudios clínicos, investigación y otros temas relacionados con este tipo de cáncer.

  9. Thermal Characteristics of Para-Aramid Fibres

    Microsoft Academic Search

    K. E. Perepelkin; I. V. Andreeva; E. A. Pakshver; I. Yu. Morgoeva

    2003-01-01

    Comparative studies of the thermal characteristics of para-aramid fibres (Armos, Rusar, Terlon, Twaron, and Kevlar) were conducted using thermomechanical analysis (TMA), dynamic thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). According to the TMA data, the para-aramid fibres studied are characterized by dimensional stability up to temperatures of 400-450°C; shrinkage or spontaneous elongation does not exceed 0.5-1%. TGA and DSC

  10. Software Libre para ensear o aprender Matemtica

    E-print Network

    De Nápoli, Pablo Luis

    Software Libre para enseñar o aprender Matemática Porqué y Cómo Pablo De Nápoli pdenapo@dm.uba.ar #12;Introducción · En esta charla, presentaremos algunos de los pogramas que son software libre, que ventajas de utilizar software libre para la docencia y la investigación en matemática. #12;¿Por qué

  11. Relaxation Effects in Para and Ferromagnetic Resonance

    Microsoft Academic Search

    N. Bloembergen; S. Wang

    1954-01-01

    Magnetic resonance experiments have been carried out at 3-cm wavelength in para-magnetic and ferromagnetic samples at very high microwave power levels, in a temperature range between 77°K and 700°K. Changes in the microwave susceptibility and the dc magnetization have been observed for microwave amplitudes between 1 and 50 oersted. For a para-magnetic salt, MnSO4.4H2O, these changes are readily interpreted in

  12. O modelo de atenção integral à saúde para tratamento de problemas decorrentes do uso de álcool e outras drogas: percepções de usuários, acompanhantes e profissionais* Integral healthcare model for treating problems caused by alcohol and other drugs: perceptions of users, their companions and practitioners

    Microsoft Academic Search

    Maristela Moraes

    Based on an integral healthcare model for the users of alcohol and other drugs, the ex- pansion of Brazil's Psycho-Social Care Centers ? Alcohol and Drugs (CAPS-AD) is guided by the acknowledgement of users as citizens rather than patients, aiming at social reinsertion through an intersectoral approach and damage control, as well as other principles designed to build up integral

  13. Larvicidal activity of para-benzoquinones.

    PubMed

    De Sousa, Damião P; Vieira, Ygor W; Uliana, Marciana P; Melo, Manuela A; Brocksom, Timothy J; Cavalcanti, Sócrates C H

    2010-08-01

    Plant products may be alternative sources of mosquito larval control agents, since they constitute a rich source of bioactive compounds that are biodegradable into nontoxic products. It has been reported that quinones and derivatives present toxic activity against mosquito larvae Aedes aegypti. Therefore, these facts led us to investigate the larvicidal potential of six structurally related para-benzoquinones against A. aegypti L. (Culicidae) larvae, the vector of dengue fever. All the para-benzoquinones were found to have larvicidal effect. The unsubstituted para-benzoquinone was the compound that exhibited the lowest potency, while 2-isopropyl-para-benzoquinone was the most bioactive. In general, the presence of alkyl groups results in more potent compounds. In addition, the number, position, and size of these groups modulate the potency of the compounds. The experimental results showed that by appropriate structural modification of para-benzoquinones, it may be possible to develop novel insecticidal compounds with potential use to control A. aegypti population. PMID:20549237

  14. MÉTODOS PARA DETERMINAÇÃO DA DENSIDADE BÁSICA DE CAVACOS PARA CONÍFERAS E FOLHOSAS

    Microsoft Academic Search

    Celso Edmundo; Bochetti Foelkel; Maria Aparecida Mourão Brasil; Luiz Ernesto; George Barrichelo

    1 - INTRODUÇÃO A densidade da madeira é uma característica complexa resultante da combinação de diversos fatôres. Existem inúmeros trabalhos mostrando sua relação com as dimensões das fibras, particularmente espessura da parede, volume dos vasos e parênquimas, proporção entre madeira primaveril e outonal, e arranjo dos elementos anatômicos. Êste assunto tem sido intensivamente estudado para as coníferas, porém para as

  15. Nanofibers from functionalized para-phenylene molecules

    NASA Astrophysics Data System (ADS)

    Schiek, M.; Lützen, A.; Koch, R.; Al-Shamery, K.; Balzer, F.; Frese, R.; Rubahn, H.-G.

    2005-04-01

    Tens to hundreds of micrometers long organic nanofibers have been generated from methoxy functionalized quaterphenylene molecules. The mutual alignment of the fibers is similar to that of previously reported nanofibers from para-hexaphenylene, and they emit intense, blue light centered at 400 nm with well resolved higher order vibronic peaks. The morphology is slightly different from that of para-hexaphenylene nanofibers, reflecting the different molecular structure. This study demonstrates that it is possible to generate organic nanofibers from artificially functionalized molecules and thus opens up the route to dedicated applications in new microdevices.

  16. Gua para Estudiantes Internacionales International Student Guide

    E-print Network

    Martin, Ralph R.

    derecho y hasta un cuarto de computadores exclusivo para estudiantes de postgrado en derecho. Los Informática de la Salud l Salud Pública y Promoción de la Salud l Psicología Derecho Criminalística l Derecho Marítimo Internacional l Derecho Comercial Internacional l Derecho Comercial Internacional y Derecho

  17. CONTRATOS FORMATIVOS CONTRATO PARA LA FORMACIN

    E-print Network

    Rey Juan Carlos, Universidad

    con trabajadores mayores de dieciséis años y menores de veintiuno (excepcionalmente menores de profesionalidad requerido para realizar un contrato en prácticas. El límite máximo de edad será de veinticuatro de Oficio y Talleres de Empleo, el límite de edad será el establecido en el programa correspondiente

  18. Fechas de los cursos para residentes OFERTAS DE CURSOS IDARM

    E-print Network

    cuentan con la certificación de E-IMET. Gestión de adquisiciones para la defensa Compras y contrataciones para las negociaciones con un énfasis especial en la negociación de cuestiones complejas en un ambiente

  19. Optical excitations in electroluminescent polymers: poly(para-phenylenevinylene) family

    E-print Network

    Harigaya, Kikuo

    Optical excitations in electroluminescent polymers: poly(para-phenylenevinylene) family (Running with large spatial extent is investigated for optical absorption spectra of the electroluminescent conjugated electroluminescent properties of the polymer poly(para-phenyl- enevinylene) (PPV) 1] has attracted physical

  20. Servicios para el Personal Docente e Investigador (PDI) Bibliotecas

    E-print Network

    Escolano, Francisco

    Servicios para el Personal Docente e Investigador (PDI) Bibliotecas La Biblioteca Universitaria presenciales. Puede consultarse el tutorial para PDI en la siguiente dirección. Entre otros servicios podrá

  1. Apuntes sobre la educación y el entrenamiento para la calidad

    Microsoft Academic Search

    Enrique Yacuzzi

    2006-01-01

    Distinguimos entre educación para la calidad y entrenamiento para la calidad. A través de la educación, aprendemos la ‘filosofía’ de la calidad; a través del entrenamiento, aprendemos sus herramientas. Así, el aprendizaje es un concepto central de este artículo. Pero no es el único. Para que el aprendizaje sea efectivo se requiere motivación, y ésta depende de muchos factores, como

  2. Mster en Ecologa Mtodos para el estudio de Sistemas

    E-print Network

    Seoane, Javier

    mediante modelos estadísticos Máster en Ecología Métodos para el estudio de Sistemas Ecológicos: Diseño Ecología Métodos para el estudio de Sistemas Ecológicos: Diseño, Análisis y Modelización. I. Modelos y1 Máster en Ecología Métodos para el estudio de Sistemas Ecológicos. Diseño, Análisis y

  3. Investigacin-Servicios Servicios para docencia y tutora

    E-print Network

    Islas, León

    Investigación-Servicios Servicios para docencia y tutoría Cursos para la docencia Tecnología para la docencia Educación abierta, continua y a distancia Formación de profesores de español como lengua extranjera Becas y estímulos Estímulos DGAPA Programa de Primas al Desempeño del Personal Académico de Tiempo

  4. Alunos convocados para o Enade 2012* ADRIANA FERREIRA RIBEIRO

    E-print Network

    DIREITO Alunos convocados para o Enade 2012* ADRIANA FERREIRA RIBEIRO ADRIANA SANTOS LONARDI PIMENTEL DIREITO - PUC-Rio #12;Alunos convocados para o Enade 2012* ANA CAROLINA VACCHIANO TEIXEIRA ANA BOUGLEUX GIMENEZ BARBARA ELKIND ZONIS DIREITO - PUC-Rio #12;Alunos convocados para o Enade 2012* BARBARA

  5. DIRECTRICES PARA PRCTICAS EXTERNAS UNIVERSIDAD AUTNOMA DE MADRID

    E-print Network

    Pazos, Florencio

    DIRECTRICES PARA PRÁCTICAS EXTERNAS UNIVERSIDAD AUTÓNOMA DE MADRID #12;Directrices para prácticas externas UNIVERSIDAD AUTÓNOMA DE MADRID 2 Estas directrices se han elaborado a partir del documento instituciones para la realización de dichas prácticas." En esta línea, la Universidad Autónoma de Madrid asume

  6. Tabu Search para Job Shop Scheduling 1. Introduo

    E-print Network

    Gomes, Francisco A. M.

    Tabu Search para Job Shop Scheduling 1. Introdução Este documento tem como objetivo apresentar o "New Tabu Search Results for the Job Shop Scheduling Problem" (livremente traduzido para "Novos resultados em Tabu Search para problemas de Job Shop Scheduling"). 2. Tabu Search Tabu Search é uma

  7. Proposta de lmite de prazas para o curso 2013-2014 Para a sa aprobacin no Consello de Goberno da UDC o 23 de abril de 2013

    E-print Network

    Fraguela, Basilio B.

    Proposta de límite de prazas para o curso 2013-2014 Para a súa aprobación no Consello de Goberno da #12;Proposta de límite de prazas para o curso 2013-2014 Para a súa aprobación no Consello de Goberno Lingüísticos e Literarios, 125 prazas. #12;Proposta de límite de prazas para o curso 2013-2014 Para a súa

  8. Rotational excitation of para-NH3 by para-H2

    NASA Astrophysics Data System (ADS)

    Danby, G.; Flower, D. R.; Valiron, P.; Kochanski, E.; Kurdi, L.

    1987-03-01

    Quantum-mechanical close-coupling calculations have been performed on rotational energy transfer in collisions of para-ammonia with ground-state (j = 0) para-hydrogen. Rate coefficients are given for the temperature range T = 15-300 K. The calculations employed an ab initio potential energy surface derived from separate determinations of the SCF and dispersion energies. The MOLSCAT computer package was used to perform the scattering calculations. Comparison is made with the recent results of Billing and Diercksen (1985 and 1986), who adopted a semiclassical approach as well as a different potential. Conclusions on the accuracy of the potential surface are drawn from comparison with experimental microwave double resonance and pressure broadening work. The extent to which He behaves like ground-state para-He in collisions with NH3 is also investigated.

  9. Producing and quantifying enriched para-H2

    NASA Astrophysics Data System (ADS)

    Tom, Brian A.; Bhasker, Siddhartha; Miyamoto, Yuki; Momose, Takamasa; McCall, Benjamin J.

    2009-01-01

    The production of enriched para-H2 is useful for many scientific applications, but the technology for producing and measuring para-H2 is not yet widespread. In this note and in the accompanying auxiliary material, we describe the design, construction, and use of a versatile standalone converter that is capable of producing para-H2 enrichments of up to ?99.99% at continuous flow rates of up to 0.4 SLM. We also discuss para-H2 storage and back conversion rates, and improvements to three techniques (thermal conductance, NMR, and solid hydrogen impurity spectroscopy) used to quantify the para-H2 enrichment.

  10. On Ensino de Astronomia: Desafios para Implantação

    NASA Astrophysics Data System (ADS)

    Faria, R. Z.; Voelzke, M. R.

    2008-09-01

    Em 2002 o ensino de Astronomia foi proposto como um dos temas estruturadores pelos Parâmetros Curriculares Nacionais e sugerido como facilitador para que o aluno compreendesse a Física como construção humana e parte do seu mundo vivencial, mas raramente seus conceitos foram ensinados. A presente pesquisa discute dois aspectos relacionados à abordagem de Astronomia. O primeiro aspecto é se ela está sendo abordada pelos professores do Ensino Médio e o segundo, aborda a maneira como ela está sendo ensinada. Optou-se pela aplicação de um questionário a partir do 2° semestre de 2006 e durante o ano de 2007 com professores que ministram a disciplina de Física, os quais trabalham em escolas estaduais em Rio Grande da Serra, Ribeirão Pires e Mauá no estado São Paulo. Dos 66,2% dos professores que responderam ao questionário nos municípios de Rio Grande da Serra, Ribeirão Pires e Mauá, 57,4% não aplicaram nenhum tópico de astronomia, 70,2% não utilizaram laboratório, 89,4% não utilizaram qualquer tipo de programa computacional, 83,0% nunca fizeram visitas com alunos a museus e planetários e 38,3% não indicaram qualquer tipo de livro ou revista referente à astronomia aos seus alunos. Mesmo considerando a Astronomia um conteúdo potencialmente significativo, esta não fez parte dos planejamentos escolares. Portanto são necessárias propostas que visem estratégias para a educação continuada dos professores como, por exemplo, cursos específicos sobre o ensino em Astronomia.

  11. Photochemistry of Aryl Pentazoles: para-Methoxyphenylpentazole.

    PubMed

    Geiger, U; Haas, Y

    2015-06-18

    The photolysis of para-methoxyphenyl pentazole (MeOPP) in methylcyanide (MeCN), investigated in the far UV (FUV) and near UV (NUV) is compared with the photolysis of para-methoxyphenyl azide (MeOPA). The main photoproduct of MeOPP is MeOPA, which, due to further photon absorption, yields mostly 4,4'-dimethoxyazobenzene as the final thermally stable product. The overall product quantum yield of both MeOPP and MeOPA is about 0.5 due to competition with internal conversion (IC) to S0 implying ultrafast nonreactive processes. Both pentazole and azide yield only 4,4'-dimethoxyazobenzene (trans and cis isomers, trans first) upon FUV photolysis in dilute solutions, whereas in the NUV, though the azo isomers are still the major products, other species are also formed. The yields of these products are 17% and 10% for the azide and the pentazole, respectively. The difference in yield indicates pentazole photoreactions that do not proceed via the azide. The products observed upon NUV photolysis may be the precursors of tars commonly produced in azide photochemistry. The exclusive production of azo compounds in the FUV indicates a rapid route to the triplet nitrene, generally considered to be the precursor of azo products. PMID:25660194

  12. Plataforma para la planeación estratégica hacia las sociedades del conocimiento. Estrategia para empresas regionales

    Microsoft Academic Search

    Ricardo Contreras Soto

    2007-01-01

    El presente es un estudio explorativo, donde partimos de las necesidades prioritarias de un sondeo en las empresas (278) de la región Bajío de Guanajuato, levantado entre los años del 2002 al 2003 y retomado actualmente para su análisis más profundo por la importancia, sentido y magnitud de la información revelada. Con el propósito de identificar las líneas problemáticas generales

  13. Photoconduction in oligo-para-phenylenevinylene films

    NASA Astrophysics Data System (ADS)

    Barth, S.; Bässler, H.; Wehrmeister, T.; Müllen, K.

    1997-01-01

    Steady state photoconduction was studied in optically thin spin coated and optically thick solution grown films of an oligo-para-phenylenevinylene sandwiched between indium tin oxide (ITO) and aluminum (Al) contacts. Oligomers represent model systems for polyphenylenevinylene that do not contain structural irregularities and impurities always present in polymers. Upon irradiation through the positively biased ITO contact, dissociation of excited states via electron transfer to the ITO prevails. It leads to a field and temperature dependent photocurrent that is symbatic with the absorption spectrum. The efficiency of this process increases with excess energy of the primarily excited state. Photocurrents due to bulk photoionization are observed upon irradiating through the positively biased Al contact. They result from temperature and field assisted dissociation of geminate e-h pairs generated either by field induced break-up of molecular singlet states or by direct charge transfer transition.

  14. Intercambio distribuido de alertas para la gestin de ataques coordinados

    E-print Network

    Garcia-Alfaro, Joaquin

    dichos ataques. Actualmente estamos trabajando en una plataforma para la gestión de ataques e intrusiones informáticas, donde la coo- peración entre los distintos componentes de esta plataforma ha sido solucionada de confidencial, etcétera. #12;Actualmente estamos trabajando en el diseño y desarrollo de una plataforma para la

  15. Evolucin de Funciones de Densidad de Probabilidad para Optimizacin Continua

    E-print Network

    Casillas Barranquero, Jorge

    Evolución de Funciones de Densidad de Probabilidad para Optimización Continua Jorge Casillas y algoritmo está basado en la evolución de funciones de densidad de probabilidad para adaptarse a las zonas. Palabras clave -- optimización continua, funciones de densidad de probabilidad, estimación de

  16. PAQUETES TECNOLÓGICOS PARA EL TRATAMIENTO DE DATOS EN INVESTIGACIÓN EN

    Microsoft Academic Search

    EDUCACIÓN MATEMÁTICA

    En este artículo se presentan algunas aplicaciones de paquetes tecnológicos para el tratamiento y análisis de datos en educación matemática. Para tal fin se efectúa un estudio documental, a partir del cual se clasifican los paquetes tecnológicos de acuerdo a diversos criterios de autores como Algarabel y Sanmartín, Valles, Buendía, Colás y Hernández. Se toma en cuenta los tipos de

  17. JavaLog: Un Lenguaje para la Programacion de Agentes

    Microsoft Academic Search

    Alejandro Zunino; Luis Berdún; Analía Amandi

    2001-01-01

    Resumen La programación de sistemas multi-agentes ha sido generalmente soportada por le nguajes orientados a objetos o lenguajes lógicos. Ambos paradigmas muestran poseer características para soportar parcialmente el desarrollo de agentes. Sin embargo, si ambos paradigmas son integrados, una solución a la programación de agentes aparece en forma evidente. En este artículo, un lenguaje multi-paradigma para la programación de agentes

  18. Cooling by Para-to-Ortho-Hydrogen Conversion

    NASA Technical Reports Server (NTRS)

    Sherman, A.; Nast, T.

    1983-01-01

    Catalyst speeds conversion, increasing capacity of solid hydrogen cooling system. In radial-flow catalytic converter, para-hydrogen is converted to equilibrium mixture of para-hydrogen and ortho-hydrogen as it passes through porous cylinder of catalyst. Addition of catalyst increases capacity of hydrogen sublimation cooling systems for radiation detectors.

  19. Pasanta en TICs para el Carlos Rey Moreno

    E-print Network

    Autonoma de Madrid, Universidad

    1 Pasantía en TICs para el desarrollo Carlos Rey Moreno I.T.T Sistemas de Telecomunicación UC3M MSc;2 Búsqueda de Pasantía Pasantía sobre TICs en país anglófono Desmoralización en la búsqueda: Conocimientos sobre TICs con ONG española ISF o Fundación EHAS Actividades académicas en Cooperación para el

  20. Modelo de análisis costobeneficio para Sistemas Integrados de Administración Financiera

    Microsoft Academic Search

    Alejandro Barros

    2012-01-01

    El presente documento identifica y analiza los componentes de costos para el diseño, desarrollo y puesta en marcha de Sistemas Integrados de Administración Financiera (SIAF). Como parte del análisis se revisa el estado del arte de las soluciones empaquetadas, las cuales en los últimos años han experimentado importantes mejorías funcionales y de cobertura para dar respuesta a los requerimientos del

  1. Canais de Mensagens Persistentes para Sistemas Distribudos Tolerantesa Faltas

    E-print Network

    Rodrigues, Luís E.T.

    Canais de Mensagens Persistentes para Sistemas Distribuídos Tolerantesa Faltas Jorge Morgado, Luís distribuídas tem motivado o desenvolvimento de vários modelos de comunicação entre processos. Es- tes modelos plataformas que suportam a aplicação. Para além disso, os modelos de co- municação tentam esconder do

  2. Metastable superpositions of ortho- and para-Helium states

    E-print Network

    Pedro Sancho; Luis Plaja

    2008-08-10

    We analyze superpositions of ortho- and para-Helium states, considering the possible existence of stationary and metastable states in the system. In particular, the metastable superposition of 1s2s ortho and para states seems to be accessible to experimental scrutiny.

  3. Metastable superpositions of ortho- and para-Helium states

    E-print Network

    Sancho, Pedro

    2008-01-01

    We analyze superpositions of ortho- and para-Helium states, considering the possible existence of stationary and metastable states in the system. In particular, the metastable superposition of 1s2s ortho and para states seems to be accessible to experimental scrutiny.

  4. PROCEDIMIENTO METODOLÓGICO PARA LA GESTIÓN DEL RIESGO EMPRESARIAL

    Microsoft Academic Search

    Eduardo Garcell Rodríguez; Andrés A. Fonseca Hernández

    2010-01-01

    El Control Interno ha sido pensado fundamentalmente para reducir riesgos que afectan las actividades de las entidades, por lo tanto, es importante una correcta identificación, análisis y manejo de estos para contribuir al logro de los objetivos trazados. Sin embargo el Control Interno tiene limitaciones que le impiden garantizar una seguridad absoluta o el éxito de una organización. Como resultado

  5. Gestión financiera de riesgos de desastres naturales para República Dominicana

    Microsoft Academic Search

    Guillermo J. Collich; Juan José Durante; Juan Martínez Álvarez; Rodrigo Vergara

    2010-01-01

    El objetivo del presente documento es describir los principales elementos conceptuales y operacionales utilizados por el Banco Interamericano de Desarrollo (BID) para diseñar y dimensionar una estrategia de gestión financiera del riesgo de desastres naturales en la República Dominicana para el período que va de 2009 a 2013. El elemento de partida, es el análisis de la situación fiscal del

  6. Convocatoria de Becas del Gobierno de Mxico para Extranjeros 2011

    E-print Network

    Jeanjean, Louis

    LOS CASOS 2.- Perfil de los candidatos Se dará preferencia a las personas que: · Realicen estudios becas Las becas se otorgan para efectuar estudios de especialización, maestría, doctorado visitantes. No se otorgan becas para cursos propedéuticos, estudios a distancia, de educación abierta y

  7. Protocolo de Espacios. Tutorial de estancias TUTORIAL PARA RELLENAR EL

    E-print Network

    Escolano, Francisco

    Protocolo de Espacios. Tutorial de estancias TUTORIAL PARA RELLENAR EL EXPEDIENTE ESPACIAL DE desarrolla en cada estancia ­ Dar de bajas estancias que ya no le pertenecen ­ Personalizar sus espacios el formulario de estancias Otros tutoriales del expediente de espacios: ­ Tutorial para rellenar el

  8. Towards a double field theory on para-Hermitian manifolds

    SciTech Connect

    Vaisman, Izu [Department of Mathematics, University of Haifa, Haifa (Israel)] [Department of Mathematics, University of Haifa, Haifa (Israel)

    2013-12-15

    In a previous paper, we have shown that the geometry of double field theory has a natural interpretation on flat para-Kähler manifolds. In this paper, we show that the same geometric constructions can be made on any para-Hermitian manifold. The field is interpreted as a compatible (pseudo-)Riemannian metric. The tangent bundle of the manifold has a natural, metric-compatible bracket that extends the C-bracket of double field theory. In the para-Kähler case, this bracket is equal to the sum of the Courant brackets of the two Lagrangian foliations of the manifold. Then, we define a canonical connection and an action of the field that correspond to similar objects of double field theory. Another section is devoted to the Marsden-Weinstein reduction in double field theory on para-Hermitian manifolds. Finally, we give examples of fields on some well-known para-Hermitian manifolds.

  9. SERVIÇOS AMBIENTAIS NO ESTADO DO PARÁ-AMAZÔNIA-BRASIL: METODOLOGIA PARA AVALIAÇÃO DO POTENCIAL MUNICIPAL PARA MERCADOS VERDES

    Microsoft Academic Search

    Heriberto Wagner Amanajás Pena; Francisco de Assis Oliveira

    2011-01-01

    Este artigo pretende analisar os potenciais do Estado do Pará para prospecção de mitigação das mudanças climáticas em atividades que oportunizem novos negócios na ótica do desenvolvimento sustentável. Bem como, analisar oportunidades em segmentos produtivos e não produtivos com reais potencialidades para proposta de mitigação. Especificamente, objetiva-se identificar atividades sustentáveis a partir da lógica de redução das emissões de GEE

  10. Construction of a Para-Ortho Hydrogen Test Cryostat

    NASA Astrophysics Data System (ADS)

    Essler, J.; Haberstroh, Ch.

    2010-04-01

    In a prospective hydrogen economy it is necessary to verify the para concentration of the employed hydrogen. In case of a short storage time of about a few days only it has been shown that a partial conversion into para-hydrogen gives an optimized overall efficiency. Hence, an easy and reliable method of measuring the para-hydrogen concentration is needed. In this paper, the concept and construction of a small test cryostat are described and first results are presented. The measuring principle is based on a catalytic induced adiabatic ortho-para conversion of a hydrogen gas flow starting from a known temperature. The operation of the system only requires a certain amount of liquid nitrogen as coolant. To determine the concentration of para-hydrogen it is only necessary to measure the temperature of the gas before and after the adiabatic catalyst cell. The measuring cryostat is used for further investigation of the spontaneous para-ortho conversion in the supercritical state. In addition, the design of the cryostat allows the investigation of different catalyst materials regarding the catalytic activity and possible degradation by using a known para concentration for the measurement.

  11. Dissociative recombination of highly enriched para-H3+

    NASA Astrophysics Data System (ADS)

    Tom, Brian A.; Zhaunerchyk, Vitali; Wiczer, Michael B.; Mills, Andrew A.; Crabtree, Kyle N.; Kaminska, Magdalena; Geppert, Wolf D.; Hamberg, Mathias; af Ugglas, Magnus; Vigren, Erik; van der Zande, Wim J.; Larsson, Mats; Thomas, Richard D.; McCall, Benjamin J.

    2009-01-01

    The determination of the dissociative recombination rate coefficient of H3+ has had a turbulent history, but both experiment and theory have recently converged to a common value. Despite this convergence, it has not been clear if there should be a difference between the rate coefficients for ortho-H3+ and para-H3+. A difference has been predicted theoretically and could conceivably impact the ortho:para ratio of H3+ in the diffuse interstellar medium, where H3+ has been widely observed. We present the results of an experiment at the CRYRING ion storage ring in which we investigated the dissociative recombination of highly enriched (˜83.6%) para-H3+ using a supersonic expansion source that produced ions with Trot˜60-100 K. We observed an increase in the low energy recombination rate coefficient of the enriched para-H3+ by a factor of ˜1.25 in comparison to H3+ produced from normal H2 (ortho:para=3:1). The ratio of the rate coefficients of pure para-H3+ to that of pure ortho-H3+ is inferred to be ˜2 at low collision energies; the corresponding ratio of the thermal rate coefficients is ˜1.5 at electron temperatures from 60 to 1000 K. We conclude that this difference is unlikely to have an impact on the interstellar ortho:para ratio of H3+.

  12. Lmite de prazas para o curso 2013-2014 Para a sa aprobacin polo Consello de Goberno da UDC o 23 de abril de 2013

    E-print Network

    Fraguela, Basilio B.

    Límite de prazas para o curso 2013-2014 Para a súa aprobación polo Consello de Goberno da UDC o 23 de abril de 2013 Páx. 1 de 4 TITULACIÓNS Proposto polo centro 2012-2013 Proposto polo centro 2013 prazas para o curso 2013-2014 Para a súa aprobación polo Consello de Goberno da UDC o 23 de abril de 2013

  13. Cáncer de páncreas–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento del cáncer de páncreas, así como referencias a estudios clínicos, investigación y otros temas relacionados con este tipo de cáncer.

  14. Tumores extracraneales de células germinativas–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento del tumor extracraneal de células germinativas en los niños, así como referencias a estudios clínicos y otros temas relacionados.

  15. Cáncer de pulmón–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento, la prevención, las causas y los exámenes de detección del cáncer de pulmón, así como referencias a estudios clínicos, investigación, estadísticas y otros temas relacionados.

  16. Cáncer de cuello uterino–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento, la prevención, las causas y los exámenes de detección del cáncer de cuello uterino, así como referencias a estudios clínicos, investigación, estadísticas y otros temas relacionados.

  17. Cáncer de cabeza y cuello–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento, la prevención, las causas y los exámenes de detección de los cánceres de cabeza y cuello, así como referencias a estudios clínicos, investigaciones, estadísticas y temas relacionados.

  18. Canais de Mensagens Persistentes para Sistemas Distribudos Tolerantesa Faltas \\Lambda

    E-print Network

    Rodrigues, Luís E.T.

    Canais de Mensagens Persistentes para Sistemas Distribuídos Tolerantesa Faltas \\Lambda Jorge aplicações distribuídas tem motivado o desenvolvimento de vários modelos de comunicação entre processos. Es­ tes modelos pretendem aumentar a interoperabilidade, a portabilidade e a flexibilidade das aplicações

  19. Cáncer de próstata–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento, la prevención, las causas y los exámenes de detección del cáncer de próstata, así como referencias a estudios clínicos, investigación, estadísticas y otros temas relacionados.

  20. App. Android Accesible para una Rutina de Movilidad Articular y

    E-print Network

    Boemo, Eduardo

    de parámetros como la actividad física, la edad, el género, o lesiones anteriores. #12;Movilidad Articular y Espalda Objetivos · Facilidad para realizar tareas. · Menor gasto de energía. · Reducción del

  1. Carcinoma de tumor primario desconocido–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento del carcinoma de tumor primario desconocido, así como referencias a estudios clínicos y otros temas relacionados.

  2. Mensaje para alumnos y padres - Duration: 3 minutes, 1 second.

    NASA Video Gallery

    El astronauta de la NASA José Hernández alienta a los estudiantes a que sigan sus sueños. Hernández también habla acerca del papel que juegan los padres para ayudar a que sus hijos hagan realidad s...

  3. Autoguía para el telescopio 2,15 mts de CASLEO

    NASA Astrophysics Data System (ADS)

    Aballay, J. A.; Casagrande, A. R.; Pereyra, P. F.; Marún, A. H.

    Se está desarrollando un sistema de autoguía para el telescopio de 2,15 mts. El mismo se realizará aprovechando el Offset Guider. Al ocular móvil de éste se vinculará alguna cámara digital (ST4-ST7-CH250) para lograr la visión del objeto. El funcionamiento del equipo será el siguiente: primero, dadas las coordenadas del objeto a observar, se tomarán las coordenadas del telescopio para que, a través de una base de datos, se determine un campo de objetos que sirvan para la cámara de visión, luego, la PC obtendrá el offset entre la estrella de observación y la estrella seleccionada como guía, este valor será trasladado a los motores que posicionarán en forma automática el ocular. Una vez que la estrella es visualizada en la cámara (monitor de PC ) se correrá el programa que guiará el telescopio automáticamente.

  4. EL ALCOHOL EN LOS ADOLESCENTES

    Microsoft Academic Search

    Cristina Ferrer Lacosta

    2009-01-01

    La accesibilidad de los jóvenes a las bebidas alcohólicas es cada vez mayor, a pesar de las prohibiciones impuestas de su venta a menores. La edad media de inicio en el consumo de alcohol entre los escolares, según los datos de la encuesta sobre drogas a la población escolar 1998 (Delegación del Gobierno para el Plan Nacional sobre Drogas), es

  5. Recent Argentine Vanguard Theatre: Gambaro's Información para extranjeros

    E-print Network

    Gerdes, Dick

    1978-04-01

    SPRING 1978 11 Recent Argentine Vanguard Theatre: Gambaro's Información para extranjeros DICK GERDES Griselda Gámbaro is a well-known Latin American playwright whose two principal works, Los siameses (1967) and El campo (1967) have been... concentration of the author's ideas found in her previous plays. Información para extranjeros goes beyond the conventions established by the theatre of the absurd to include char acteristics of vanguard theatre in the United States, such as Julian Beck...

  6. Cooling by conversion of para to ortho-hydrogen

    NASA Technical Reports Server (NTRS)

    Sherman, A. (inventor)

    1983-01-01

    The cooling capacity of a solid hydrogen cooling system is significantly increased by exposing vapor created during evaporation of a solid hydrogen mass to a catalyst and thereby accelerating the endothermic para-to-ortho transition of the vapor to equilibrium hydrogen. Catalyst such as nickel, copper, iron or metal hydride gels of films in a low pressure drop catalytic reactor are suitable for accelerating the endothermic para-to-ortho conversion.

  7. 40 CFR 721.9520 - Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye (generic).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... false Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye...9520 Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye...generically as methylated-para-rosaniline salt of a trisulfonated triarylmethane...

  8. 40 CFR 721.9520 - Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye (generic).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... false Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye...9520 Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye...generically as methylated-para-rosaniline salt of a trisulfonated triarylmethane...

  9. ESTAGIRIOS PARA AGNCIA DE PUBLICIDADE E MARKETING A CA Estgio e Consultoria tem uma oportunidade para voc!

    E-print Network

    Maier, Rudolf Richard

    promocionais e eventos, interface com agência de propaganda para a criação de pequenas campanhas e comunicação com o desenvolvimento e com a implantação de diversas ações de publicidade e propaganda que dão

  10. ParaText : scalable text modeling and analysis.

    SciTech Connect

    Dunlavy, Daniel M.; Stanton, Eric T.; Shead, Timothy M.

    2010-06-01

    Automated processing, modeling, and analysis of unstructured text (news documents, web content, journal articles, etc.) is a key task in many data analysis and decision making applications. As data sizes grow, scalability is essential for deep analysis. In many cases, documents are modeled as term or feature vectors and latent semantic analysis (LSA) is used to model latent, or hidden, relationships between documents and terms appearing in those documents. LSA supplies conceptual organization and analysis of document collections by modeling high-dimension feature vectors in many fewer dimensions. While past work on the scalability of LSA modeling has focused on the SVD, the goal of our work is to investigate the use of distributed memory architectures for the entire text analysis process, from data ingestion to semantic modeling and analysis. ParaText is a set of software components for distributed processing, modeling, and analysis of unstructured text. The ParaText source code is available under a BSD license, as an integral part of the Titan toolkit. ParaText components are chained-together into data-parallel pipelines that are replicated across processes on distributed-memory architectures. Individual components can be replaced or rewired to explore different computational strategies and implement new functionality. ParaText functionality can be embedded in applications on any platform using the native C++ API, Python, or Java. The ParaText MPI Process provides a 'generic' text analysis pipeline in a command-line executable that can be used for many serial and parallel analysis tasks. ParaText can also be deployed as a web service accessible via a RESTful (HTTP) API. In the web service configuration, any client can access the functionality provided by ParaText using commodity protocols ... from standard web browsers to custom clients written in any language.

  11. El uso de la neuromodulación para el tratamiento del temblor

    PubMed Central

    Bendersky, Damián; Ajler, Pablo; Yampolsky, Claudio

    2014-01-01

    Introducción: El temblor puede ser un desorden incapacitante y el tratamiento de primera línea para estos pacientes es farmacológico. Sin embargo, este tratamiento puede llevar a una reducción satisfactoria del temblor en sólo el 50% de los pacientes con temblor esencial. La talamotomía era el tratamiento de elección para el temblor refractario al tratamiento médico hasta que comenzó a utilizarse la estimulación cerebral profunda (ECP) del núcleo ventral intermedio (Vim) del tálamo. En la actualidad, raramente se realiza la talamotomía. Métodos: Este artículo es una revisión no sistemática de las indicaciones, resultados, parámetros de programación y técnica quirúrgica de la ECP del Vim para el tratamiento del temblor. Resultados: Aunque los resultados clínicos son similares usando la talamotomía o la ECP del Vim, la primera causa más efectos adversos que la última. Además, la ECP puede ser usada bilateralmente, mientras que la talamotomía tiene un alto riesgo de causar disartria cuando se realiza de ambos lados. La ECP del Vim logró una adecuada mejoría del temblor en varias series de pacientes con temblor causado por temblor esencial, enfermedad de Parkinson o esclerosis múltiple. Además del Vim, hay otros blancos que están siendo usados por varios autores, tales como la zona incerta y las radiaciones prelemniscales. Conclusión: La ECP del Vim es un tratamiento útil para el temblor incapacitante refractario al tratamiento médico. Es esencial realizar una precisa selección de pacientes, así como utilizar una técnica quirúrgica correcta. Aún se desconoce el mejor blanco estereotáctico para el temblor, aunque el Vim es el más usado. PMID:25165613

  12. Rotational excitation of HCN by para- and ortho-H?.

    PubMed

    Vera, Mario Hernández; Kalugina, Yulia; Denis-Alpizar, Otoniel; Stoecklin, Thierry; Lique, François

    2014-06-14

    Rotational excitation of the hydrogen cyanide (HCN) molecule by collisions with para-H2(j = 0, 2) and ortho-H2(j = 1) is investigated at low temperatures using a quantum time independent approach. Both molecules are treated as rigid rotors. The scattering calculations are based on a highly correlated ab initio 4-dimensional (4D) potential energy surface recently published. Rotationally inelastic cross sections among the 13 first rotational levels of HCN were obtained using a pure quantum close coupling approach for total energies up to 1200 cm(-1). The corresponding thermal rate coefficients were computed for temperatures ranging from 5 to 100 K. The HCN rate coefficients are strongly dependent on the rotational level of the H2 molecule. In particular, the rate coefficients for collisions with para-H2(j = 0) are significantly lower than those for collisions with ortho-H2(j = 1) and para-H2(j = 2). Propensity rules in favor of even ?j transitions were found for HCN in collisions with para-H2(j = 0) whereas propensity rules in favor of odd ?j transitions were found for HCN in collisions with H2(j ? 1). The new rate coefficients were compared with previously published HCN-para-H2(j = 0) rate coefficients. Significant differences were found due the inclusion of the H2 rotational structure in the scattering calculations. These new rate coefficients will be crucial to improve the estimation of the HCN abundance in the interstellar medium. PMID:24929383

  13. Astronomia para/com crianças carentes em Limeira

    NASA Astrophysics Data System (ADS)

    Bretones, P. S.; Oliveira, V. C.

    2003-08-01

    Em 2001, o Instituto Superior de Ciências Aplicadas (ISCA Faculdades de Limeira) iniciou um projeto pelo qual o Observatório do Morro Azul empreendeu uma parceria com o Centro de Promoção Social Municipal (CEPROSOM), instituição mantida pela Prefeitura Municipal de Limeira para atender crianças e adolescentes carentes. O CEPROSOM contava com dois projetos: Projeto Centro de Convivência Infantil (CCI) e Programa Criança e Adolescente (PCA), que atendiam crianças e adolescentes em Centros Comunitários de diversas áreas da cidade. Esses projetos têm como prioridades estabelecer atividades prazerosas para as crianças no sentido de retirá-las das ruas. Assim sendo, as crianças passaram a ter mais um tipo de atividade - as visitas ao observatório. Este painel descreve as várias fases do projeto, que envolveu: reuniões de planejamento, curso de Astronomia para as orientadoras dos CCIs e PCAs, atividades relacionadas a visitas das crianças ao Observatório, proposta de construção de gnômons e relógios de Sol nos diversos Centros Comunitários de Limeira e divulgação do projeto na imprensa. O painel inclui discussões sobre a aprendizagem de crianças carentes, relatos que mostram a postura das orientadoras sobre a pertinência do ensino de Astronomia, relatos do monitor que fez o atendimento no Observatório e o que o número de crianças atendidas representou para as atividades da instituição desde o início de suas atividades e, em particular, em 2001. Os resultados são baseados na análise de relatos das orientadoras e do monitor do Observatório, registros de visitas e matérias da imprensa local. Conclui com uma avaliação do que tal projeto representou para as Instituições participantes. Para o Observatório, em particular, foi feita uma análise com relação às outras modalidades de atendimentos que envolvem alunos de escolas e público em geral. Também é abordada a questão do compromisso social do Observatório na educação do público em questão.

  14. ISSN 0103-1538 3891 ANOMALIAS DE PRECIPITAO PARA A REGIO SUL DO BRASIL

    E-print Network

    ISSN 0103-1538 3891 ANOMALIAS DE PRECIPITAÇÃO PARA A REGIÃO SUL DO BRASIL: ANÁLISE DE CONSISTÊNCIA desastres naturais na Região Sul do Brasil. Compreender o comportamento da chuva irá auxiliar diretamente dados pluviométricos para gerar mapas de anomalias de precipitação para a Região Sul do Brasil. Para

  15. La motivación para aprender en el Espacio Europeo de Educación Superior

    Microsoft Academic Search

    José Alberto Martínez González

    2011-01-01

    En el Espacio Europeo de Educación Superior (EEES) la motivación constituye una competencia para la profesión y para la vida. Y también es necesaria para aprender en la Universidad. La motivación es el conjunto integrado de procesos cognitivos, afectivos y conductuales que hacen posible activar al alumno con la intensidad y la persistencia adecuadas para desarrollar con acierto otras competencias

  16. Taller de Ciencia para Jvenes para alumnos de nivel bachillerato San Cristbal de las Casas, Chiapas, 25-30 julio, 2011

    E-print Network

    Bor, Gil

    Taller de Ciencia para Jóvenes para alumnos de nivel bachillerato San Cristóbal de las Casas, Chiapas, 25-30 julio, 2011 CONVOCATORIA El "Taller de Ciencia para Jóvenes" en San Cristóbal de las Casas atraídos a las ciencias naturales y tienen intención de estudiar una carrera científica. El programa del

  17. Cáncer de piel–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento, la prevención, las causas y los exámenes de detección del cáncer de piel, así como referencias a estudios clínicos, investigación y otros temas relacionados con este tipo de cáncer.

  18. IBERCHIP, 1999 Ambiente para cosimulaVSS Synopsys

    E-print Network

    Wagner, Flávio Rech

    1 IBERCHIP, 1999 Ambiente para cosimula·VSS Synopsys Marcio Seiji Oyamada Flvio Rech utilizadas foram o simulador SIMOO e o simulador VHDL, VSS Synopsys. A integra· sockets utilizando-se a interface CLI dispon'vel no ambiente VSS. Este modelo de co-simula·

  19. Guia para a Avaliao do Risco Ambiental de Organismos

    E-print Network

    Parrott, Wayne

    Paulo - ILSI Brasil 2012 #12;#12;Guia para a Avaliação do Risco Ambiental de Organismos Geneticamente Modificados #12;APOIO: © 2012 ILSI Brasil - International Life Sciences Institute do Brasil ILSI BRASIL INTERNATIONAL LIFE SCIENCES INSTITUTE DO BRASIL Rua Hungria, 664 - conj.113 01455-904 - São Paulo - SP - Brasil

  20. SEGUROS DE DESEMPLEO: REVISIÓN DE LITERATURA Y PROPUESTA PARA COLOMBIA

    Microsoft Academic Search

    David Bardey; Samir Kiuhan; Julio César Suárez

    2009-01-01

    En este artículo se estudia la posibilidad de introducir seguros de desempleo en Colombia.. En una primera parte, se propone una revisión de literatura de los seguros de desempleo en la cual se exponen las ventajas generadas por una cobertura contra este riesgo, así como sus inconvenientes. En una segunda parte, se estudian varios escenarios para introducir seguros de desempleo

  1. Programacin Funcional Lgica para Ciencias de la Computacin

    E-print Network

    Simari, Guillermo R.

    Programación Funcional en LISP Lógica para Ciencias de la Computación Primer Cuatrimestre de 2009 paradigmas de programación: Programación Orientada a Objetos. Programación Lógica. Programación Funcional. En esta clase, abordaremos uno de los lenguajes que pertenecen al paradigma funcional, el lenguaje LISP

  2. Se busca una raíz unitaria: evidencia para Chile

    Microsoft Academic Search

    Rómulo Chumacero Escudero

    Este documento presenta evidencia contundente en contra de la hipótesis nula de que series tales como el IMACEC, el consumo o el PIB chilenos presentan una raíz unitaria. Esta evidencia se apoya en resultados derivados en Chumacero (2000) que muestran que en caso que alguna de estas variables de escala sea estacionaria en diferencia, los retornos de activos disponibles para

  3. Dispositivo Electrónico para la Compresión de Señales Fonocardiográficas

    Microsoft Academic Search

    Martínez-Alajarín Juan; Colodro-Conde Carlos; Garrigós-Guerrero Javier; Merino Ramón

    INTRODUCCIÓN La señal fonocardiográfica se suele digitalizar con una frecuencia de muestreo igual o superior a 4000 Hz. Esto motiva que en determinados casos sea conveniente realizar la transmisión del fonocardiograma de forma comprimida para reducir el tiempo de transmisión. Además, una implementación hardware del algoritmo de compresión en un circuito electrónico integrado suele ser preferible a una implementación software

  4. DERECHOS DEL EMPLEADO LEy PARA LA PROtECCin

    E-print Network

    Rock, Chris

    DERECHOS DEL EMPLEADO LEy PARA LA PROtECCión DEL EMPLEADO COntRA LA PRuEbA DEL POLígRAfO PROHIBICIONES ExENCIONES DERECHOS DE LOS ExAMINADOS CUMPLIMIENTO Generalmente se le prohíbe al empleador que le aspirante a un trabajo por haberse negado a someterse a la prueba o por haberse acogido a otros derechos

  5. EM DESTAQUE Resgate do Chipre empurra bolsas para o vermelho

    E-print Network

    Instituto de Sistemas e Robotica

    EM DESTAQUE Resgate do Chipre empurra bolsas para o vermelho Resgate da União Europeia ao Chipre: Interessados em inve têm de se preparar - Câmara de co Moçambique: Portugueses que pro de Comércio triplicou em dois anos Outros sites Impresa: SIC TV Mais Escape Olhares J. Letras V. Júnior E. Informática

  6. Consideraciones para una política económica regional en Colombia

    Microsoft Academic Search

    Juan David Barón; Gerson Javier Pérez; Peter Rowland

    2004-01-01

    Este trabajo propone un marco de trabajo para una política económica regional en Colombia. Se estudian las características regionales y se muestra que las disparidades regionales son significativas y persistentes en el tiempo. Por ello, se hace necesario llevar a cabo una política económica que promueva el desarrollo de las regiones más pobres de país. Este estudio aprovecha lecciones de

  7. POLÍTICAS ACTIVAS DE EMPLEO PARA CALI-COLOMBIA

    Microsoft Academic Search

    CARLOS GIOVANNI GONZÁLEZ ESPITIA; JHON JAMES MORA RODRÍGUEZ

    2011-01-01

    El artículo discute la implementación de políticas activas de empleo para el mercado laboral en Cali-Colombia. El principal objetivo de una política activa de empleo es la reducción de la tasa de desempleo, la reducción de la participación en la informalidad y el reemplazo de trabajos malos o de baja calidad por trabajos buenos. La acción colectiva de las instituciones

  8. MEMORIA PARA LA PROPUESTA DE INVESTIGACIN EN INGENIERA CIVIL

    E-print Network

    Fraguela, Basilio B.

    MEMORIA PARA LA PROPUESTA DE MASTER DE INVESTIGACIÓN EN INGENIERÍA CIVIL A IMPLANTAR EN EL CURSO 2013-2014 #12;ETS Ingenieros de Caminos, Canales y Puertos MÁSTER EN INVESTIGACIÓN EN INGENIERÍA CIVIL Máster de Investigación en Ingeniería Civil por la Universidade da Coruña Indicar si el programa se

  9. Universidad Abierta para Mayores La UOM a Mallorca

    E-print Network

    Oro, Daniel

    Universidad Abierta para Mayores La UOM a Mallorca -- Diplomas de la UOM (campus universitario (Alemania). Universidad de Valencia (España). #12;-- La UOM en los Pueblos de Mallorca: del 15 de mayo al 13 de junio de 2013. Es un ciclo de 4 conferencias que se realizan en diferentes pueblos de Mallorca

  10. MEMORIA DE LA RED DE INVESTIGACIN PARA LA DOCENCIA UNIVERSITARIA

    E-print Network

    Escolano, Francisco

    MEMORIA DE LA RED DE INVESTIGACIÓN PARA LA DOCENCIA UNIVERSITARIA Victoria Tur Viñes (Coord Psicología Social Facultad de Ciencias Económicas y Empresariales Universidad de Alicante Red de Creatividad trabajo que exponemos recopila los resultados del trabajo en red de investigación de un grupo de

  11. Propuesta de modelo financiero para crecimiento corporativo sostenible

    Microsoft Academic Search

    Giovanni E. Reyes; Andrea Briceño M

    2010-01-01

    Aspectos como la capacidad técnica y económica en la producción de bienes y servicios, la gestión administrativa y financiera, y las políticas de comercialización o mercadeo, son determinantes para el crecimiento sostenible de las organizaciones, entendido como un proceso dinámico que tiene efecto en la creación de valor de las mismas. El objetivo fundamental de este trabajo es definir un

  12. MODELO PARA UN SISTEMA DE GESTIÓN INTEGRADA DEL CAPITAL HUMANO

    Microsoft Academic Search

    Manuel A. Ramírez de Paz; Reynaldo Velázquez Zaldívar

    2010-01-01

    En este artículo se expone un modelo teórico, como estrategia para la concepción de un procedimiento general que permita la implantación de un Sistema de Gestión Integrada de Capital Humano (SGICH). Se describen además los principales elementos que componen al modelo propuesto.

  13. Un Modelo de alerta temprana para el sistema financiero colombiano

    Microsoft Academic Search

    José Eduardo Gómez-González; Inés Paola Orozco Hinojosa

    2010-01-01

    En este trabajo se presenta un modelo estadístico de alerta temprana que utiliza modelos de duración para evaluar el estado corriente y pronosticar el estado futuro de la salud financiera de los bancos en Colombia. En el artículo se discuten las ventajas que tiene utilizar modelos de duración como modelos estadísticos de alerta temprana frente a los más comúnmente utilizados

  14. Mster en Ecologa Mtodos para el estudio de Sistemas

    E-print Network

    Seoane, Javier

    el estudio de Sistemas Ecológicos: Diseño, Análisis y Modelización. VI. Crítica de un modelo #12;27 Máster en Ecología Métodos para el estudio de Sistemas Ecológicos: Diseño, Análisis y conteos o frecuencias y en estos casos se pueden usar modelos con errores de Poisson: Conteos (números

  15. Un Sistema para la Extraccin de Conocimiento en Bioinformtica

    E-print Network

    Hernández Orallo, José

    Un Sistema para la Extracción de Conocimiento en Bioinformática Vicent Estruch, Cèsar Ferri, José modelos generales a partir de conjuntos de datos particulares. Así, el uso de técnicas de aprendizaje auto impulso y de característica diferenciadora de los nuevos sistemas de minería de datos frente a los

  16. Un Modelo de Alerta Temprana para el Sistema Financiero Colombiano

    Microsoft Academic Search

    José Eduardo Gómez González; Inés Paola Orozco

    2009-01-01

    En este trabajo se presenta un modelo estadístico de alerta temprana, que utiliza modelos de duración para evaluar el estado corriente y pronosticar el estado futuro de la salud financiera de los bancos en Colombia. En el artículo se discuten las ventajas que tiene utilizar modelos de duración como modelos estadísticos de alerta temprana frente a los más comúnmente utilizados

  17. Sistemas de Informao para a Web: Arquitecturas Aplicacionais

    E-print Network

    da Silva, Alberto Rodrigues

    modelos de SIW centrados no servidor, ou seja, sistemas de informação cuja actividade é realizada1 Sistemas de Informação para a Web: Arquitecturas Aplicacionais Alberto Silva IST/INESC Rua Alves. SUMÁRIO Propõe-se e expôe-se nesta comunicação um modelo de classificação e identificação das principais

  18. Although acetaminophen (para-cetamol) has been used clinically

    E-print Network

    Lindquist, Susan

    URLs Although acetaminophen (para- cetamol) has been used clinically for more than a century, its and colleagues have now provided evidence for a new and unexpected mechanism through which acetaminophen could exert its analgesic effects. Acetaminophen differs signifi- cantly from aspirin and other non- steroidal

  19. Adding Parallel I/O to PARA-BMU 

    E-print Network

    Johnson, Nick; Bethune, Iain

    2012-10-01

    VOX-FE is a voxel-based bone modelling suite. The solver part of the suite - PARA-BMU - currently uses only serial I/O routines which lead to poor scalability. We enhance the code by adding parallel I/O routines based on the netCDF and HDF5...

  20. Marvin, robô construtor para competição em robótica móvel

    Microsoft Academic Search

    André Martin Narciso; Carlos Augusto; Bentes da Silva; Jackson Paul Matsuura

    renatohsp@gmail .com Resumo: Este artigo é sobre a construção do robô autônomo Marvin o Construtor, que foi construído para participar da IV Competição IEEE Brasileira de Robô. A tarefa consiste em empilhar blocos em uma área predeterminada em um menor tempo possível, ganha a torre mais alta. O robô, construído por alunos do Instituto Tecnológico de Aeronáutica (ITA), foi construído

  1. SIPLAN: Sistema de información para administrar plantaciones comerciales en México

    Microsoft Academic Search

    Edgar Arturo; Sánchez Moreno; Manuel de Jesús González; David H. del Valle; José René Valdez Lazalde; NOTA TÉCNICA

    A Plantation Information System (SIPLAN) was designed and implemented to administrate commercial plantations established by PRODEPLAN (Programa para el Desarrollo de Plantaciones Forestales Comerciales) in Mexico. Users may interact with the system which includes a relational data base that is joined with a Geographical Information System in order to visualize plantations spatial distribution. SIPLAN represents a very useful tool which

  2. Un enfoque para soporte de tareas mediante adaptacion en el

    E-print Network

    Winckler, Marco Antonio Alba

    aplicaciones Web 11 2.1. Hipermedia y Sistemas basados en Web . . . . . . . . . . . . . . . 13 2.2. Mecanismos . . . . . . . . . . . . . . . . . . . . . . 18 2.2.2. M´etodos para la adaptaci´on en sistemas hipermedia . . . . 21 2.2.3. L.2. Informaci´on involucrada en las adaptaciones . . . . . . . . . . . . 52 3.3. Ejecuci´on de adaptaciones

  3. Combinando multiples discretizadores para aprendizaje de reglas evolutivo con enfoque

    E-print Network

    Bacardit, Jaume

    resultados de las pruebas realizadas con diversos dominios muestran que se consigue obtener un sistema clasi sistemas GABIL [3] y XCS [4] respectivamente. Para tratar con problemas con atributos reales una de las representaciones del conocimiento clasicas de este tipo de sistemas. Un buen algorit­ mo de discretizacion tiene

  4. SISTEMA PARA LA GESTIÓN DE PAGOS EN LA EMPRESA GRÁFICA \\

    Microsoft Academic Search

    Andrés Ricardo Sosa San Millán

    2012-01-01

    El vertiginoso desarrollo de la informática ha influido de forma evidente y constante en el perfeccionamiento de las computadoras para convertirlas en excelentes medios de intercambio y almacenamiento de información en el desarrollo socio-económico. El departamento que se encarga de llevar a cabo el proceso de pago de salarios en la Empresa Gráfica \\

  5. Evaluación diferencial de los programas de acogimiento residencial para menores

    Microsoft Academic Search

    Eduardo Martín; Teresa Rodríguez; Ángela Torbay

    2007-01-01

    En este trabajo se realiza una evaluación de los programas de acogimiento residencial para menores desde la perspectiva de evaluación de resultados. Tomando dos medidas separadas nueve meses en el tiempo a un total de 175 menores, y utilizando la escala de observación mensual de objetivos del Pro- yecto Educativo Individualizado, encontramos que, en la mayoría de las dimensiones analizadas,

  6. TALK NECESITO TRABAJAR GUA PARA PADRES DE ADOLESCENTES

    E-print Network

    Netoff, Theoden

    deben tener los menores de edad para poder trabajar. La ley estatal generalmente pone límite a la edad. En general, la cantidad de horas que los menores de edad pueden trabajar varía y depende si el leyes regulan el tipo de trabajo que puede tener el menor de edad. Generalmente se prohíbe a los

  7. Construcción de un laboratorio de GRID Virtual para HPC

    Microsoft Academic Search

    D. Fernández Slezak; P. Turjanski; M. Silva; J. Monetti; E. Mocskos; C. García Garino; G. Marshall

    Resumen—GRID Computing es un entorno persistente que permite la integración de recursos informáticos administrados por diversas organizaciones geográficamente alejadas, asumiendo la ausencia de una ubicación central de control. La implementación óptima de un proyecto GRID Computing es una tarea de gran envergadura que debe ser encarada en aproximaciones sucesivas de creciente complejidad para minimizar el ensayo y error tanto en

  8. DEPARTAMENTO DE DIREITO EDITAL PARA CONCURSO DE ADMISSO POR TRANSFERNCIA

    E-print Network

    DEPARTAMENTO DE DIREITO EDITAL PARA CONCURSO DE ADMISSÃO POR TRANSFERÊNCIA EXTERNA E PORTADORES DE: - estar cursando até o 5º (quinto) período de Direito ou equivalente, nos casos de cursos seriados; - uma curso de Direito da PUC-Rio. (b) de IES estrangeira: - uma declaração pessoal, descrevendo os motivos de

  9. DEPARTAMENTO DE DIREITO EDITAL PARA CONCURSO DE ADMISSO POR TRANSFERNCIA

    E-print Network

    DEPARTAMENTO DE DIREITO EDITAL PARA CONCURSO DE ADMISSÃO POR TRANSFERÊNCIA INTERNA, TRANSFERÊNCIA PUC-Rio a disciplina Introdução ao Direito I (JUR 1031), logrando-se aprovação na mesma. 1. Da prova objetivas envolvendo conteúdo da disciplina Introdução à Ciência do Direito I; (b) dissertação a respeito do

  10. DEPARTAMENTO DE DIREITO EDITAL PARA CONCURSO DE ADMISSO POR TRANSFERNCIA

    E-print Network

    DEPARTAMENTO DE DIREITO EDITAL PARA CONCURSO DE ADMISSÃO POR TRANSFERÊNCIA INTERNA E TRANSFERÊNCIA Introdução ao Direito I (JUR 1031), logrando-se aprovação na mesma. 1. Da prova de seleção. A prova de disciplina Introdução à Ciência do Direito I; (b) dissertação a respeito do seguinte texto1 : BOBBIO

  11. PROCEDIMIENTO PARA LA REALIZACIN DE LAS FOTOGRAFAS DE LAS ORLAS

    E-print Network

    Rey Juan Carlos, Universidad

    casos, el delegado tendrá que haber comunicado, previamente, a la Gerencia el estudio y/o fotógrafo con orla, y en el caso de que no se puedan realizar las fotografías en el estudio, el delegado de curso de1 PROCEDIMIENTO PARA LA REALIZACIÓN DE LAS FOTOGRAFÍAS DE LAS ORLAS Los estudios fotográficos o

  12. EL APORTE DE LA NEUROCIENCIA PARA LA FORMACIÓN DOCENTE

    Microsoft Academic Search

    Susan Francis Salazar

    2005-01-01

    Resumen: El siguiente artículo se propone, a partir del análisis de un proceso de investigación sobre el área pedagógica en los planes de formación docente, realizar una invitación a la incorporación del estudio del cerebro humano, como eje dentro de la formación profesional para el ejercicio docente. La capacidad de educabilidad propia de los seres humanos tiene su explicación sobre

  13. PROTOCOLO DE QUANTIFICAO, PURIFICAO E REAO DE SEQENCIAMENTO PARA PRODUTOS DE PCR (utilizado para o MegaBACE)

    E-print Network

    Eizirik, Eduardo

    de PCR acima de 900 pb 100 ng Plasmídios 100 ­ 200 ng #12;PURIFICAÇÃO DE PCR UTILIZANDO PEG 8000 1 para um tubo de microcentrífuga de 0,5ml. 3. Adicione 1 volume de solução de PEG (PEG 8000 20% NaCl 2 enzimas ou com PEG. Nós no Centro de Biologia Genômica e Molecular costumamos usar enzimas ou PEG

  14. CHARACTERISTICS OF PARA-INFLUENZA 1 (HA-2) VIRUS III.

    PubMed Central

    Dick, Elliot C.; Mogabgab, William J.

    1962-01-01

    Dick, Elliot C. (Tulane University School of Medicine, New Orleans, La.) and William J. Mogabgab. Characteristics of para-influenza 1 (HA-2) virus. III. Antigenic relationships, growth, interaction with erythrocytes, and physical properties. J. Bacteriol. 83:561–571. 1962—Hemagglutination-inhibition tests with rabbit and rooster immune sera showed HA-2-like strains of para-influenza 1 to be nearly as closely related antigenically to para-influenza 3 (HA-1) virus as to the Sendai strain of para-influenza 1; however, convalescent sera from humans infected with para influenza 1 virus exhibited four-fold or greater increases in antibody to HA-2 and Sendai viruses, but seldom to HA-1. Para-influenza 1 (HA-2) infectivity was destroyed within 2 hr at temperatures approaching 50 C; at 36 C, infective virus disappeared by 80 hr. At a temperature of 44 C or below, the hemagglutinin (HA) titer remained unchanged for 100 hr; but at temperatures above this, hemagglutinin was destroyed rapidly. Virus infectivity was found to be most stable at very slightly acid or neutral pH and to be increasingly labile at pH values more extreme than 5.7 and 8.7. Hemagglutinin was generally more resistant than infectivity to extremes of reaction; this was most notable in the alkaline range. In primary monkey-kidney tissue culture, virus was adsorbed in 5 hr, new infective virus was noted in 11 to 15 hr, and maximal amounts were detected at 60 hr and maintained through 132 hr. Production of hemagglutinin paralleled that of infectivity. The tcid50/HA ratio was approximately 4.5. With human type “O” erythrocytes, the HA titer of Copenhagen 222 virus suspensions was raised two- to fourfold by increasing the temperature of reaction and sedimentation from 4 C to room temperature. It could not be demonstrated that this thermal effect was due either to an increased total adsorption at an elevated temperature or to a greater rate of adsorption; the rate of hemagglutination was, however, increased by fourfold at the higher temperature. PMID:13886172

  15. Para-Sasakian geometry in thermodynamic fluctuation theory

    E-print Network

    A. Bravetti; C. S. Lopez-Monsalvo

    2015-01-12

    In this work we tie concepts derived from statistical mechanics, information theory and contact Riemannian geometry within a single consistent formalism for thermodynamic fluctuation theory. We derive the concrete relations characterizing the geometry of the Thermodynamic Phase Space stemming from the relative entropy and the Fisher-Rao information matrix. In particular, we show that the Thermodynamic Phase Space is endowed with a natural para-contact pseudo-Riemannian structure derived from a statistical moment expansion which is para-Sasaki and {\\eta}-Einstein. Moreover, we prove that such manifold is locally isomorphic to the hyperbolic Heisenberg group. In this way we show that the hyperbolic geometry and the Heisenberg commutation relations on the phase space naturally emerge from classical statistical mechanics. Finally, we argue on the possible implications of our results.

  16. On Linear Differential Equations Involving a Para-Grassmann Variable

    NASA Astrophysics Data System (ADS)

    Mansour, Toufik; Schork, Matthias

    2009-07-01

    As a first step towards a theory of differential equations involving para-Grassmann variables the linear equations with constant coefficients are discussed and solutions for equations of low order are given explicitly. A connection to n-generalized Fibonacci numbers is established. Several other classes of differential equations (systems of first order, equations with variable coefficients, nonlinear equations) are also considered and the analogies or differences to the usual (''bosonic'') differential equations discussed.

  17. Programacin Funcional en Lgica para Ciencias de la Computacin

    E-print Network

    Simari, Guillermo R.

    1 Programación Funcional en LISP Lógica para Ciencias de la Computación Primer Cuatrimestre de 2009 programación: ­ Programación Orientada a Objetos. ­ Programación Lógica. ­ Programación Funcional. · En esta clase, abordaremos uno de los lenguajes que pertenecen al paradigma funcional, el lenguaje LISP. Origen

  18. Ultrafast photogeneration mechanisms of triplet states in para-hexaphenyl

    Microsoft Academic Search

    C. Zenz; G. Cerullo; G. Lanzani; W. Graupner; F. Meghdadi; G. Leising; S. de Silvestri

    1999-01-01

    We present femtosecond pump-probe measurements, both conventional and electric field-assisted, on organic light-emitting devices based on para-hexaphenyl. The dominant triplet exciton generation mechanism is assigned to nongeminate bimolecular recombination of photogenerated, spin-12 polarons. This process is active within a few hundred femtoseconds after photoexcitation and involves about 20% of the initially excited states. At higher photoexcitation densities, we observe an

  19. Un marco teórico para la economía del e-learning

    Microsoft Academic Search

    David Castillo Merino; Mikael Sjöberg

    2008-01-01

    La economía del e-learning se identificó como una prioridad clave en el taller de asesoría de campus virtuales celebrado en Bruselas el 23 de noviembre de 2004. Con esta idea, el proyecto eLene-EE (Economía del e-learning) ha tratado de ampliar el conocimiento relativo a los incentivos para crear campus virtuales e iniciar métodos de enseñanza en la educación basada en

  20. Consistent Assignment of the Vibrations of Para Disubstituted Benzene Molecules

    NASA Astrophysics Data System (ADS)

    Andrejeva, Anna; Lee, Alison Jasmin; Wright, Tim

    2014-06-01

    When disubstituted benzene molecules are considered the relative position of the substituents must be defined. The three possible forms are ortho-, meta-, and para- where the latter is investigated in this work by consideration of the effect para positioned substituents will have on the vibrational modes. The consistency of the labelling and assignment of the vibrational frequencies of the para disubstituted benzene molecules is investigated in their ground states (S0) and first electronically excited states (S1). The work extends a previously published nomenclature where ring-localised vibrations are compared straightforwardly across different monosubstituted benzene species and given the label Mi. The assignments of the frequencies include previous work but also the calculated wavenumbers for both hydrogenated disubstituted benzenes (-h4) and the deuterated isotopologues (-d4) employing density functional theory (DFT) and time-dependent density functional theory (TDDFT). A. M. Gardner and T. G. Wright, J. Chem. Phys., 135, 114305 (2011) A. M. Gardner, A. M. Green, V. M. Tame-Reyes, V. H. K. Wilton and T. G. Wright, 138, 134303 (2013) A. M. Gardner, A. M. Green, V. M. Tame-Reyes, K. L. Reid, J. A. Davies, V. H. K. Wilton and T. G. Wright, manuscript accepted

  1. COD, para-chlorophenol and toxicity removal from para-chlorophenol containing synthetic wastewater in an activated sludge unit

    Microsoft Academic Search

    Fikret Kargi; Isil Konya

    2006-01-01

    Chlorinated phenolic compounds present in some chemical industry wastewaters cause severe toxic effects on the organisms and often are resistant to biological degradation. Synthetic wastewater containing different concentrations of para-chlorophenol (4-chlorophenol, 4-CP) was biologically treated in an activated sludge unit for COD, 4-CP and toxicity removal. Effects of feed 4-CP concentration on COD, 4-CP, toxicity removals and on sludge volume

  2. CONFIGURACION EDUROAM PARA MOVILES SYMBIAN S60 v3 Para poder configurar Eduroam en nuestro dispositivo con Symbian primero debemos

    E-print Network

    Valencia, Universidad de

    Trust External CA Root y el (DER) de UTN-USERFirst-Hardware en Jerarquia 1 y le damos a Guardar/Salvar, para cada páginas: #12;Conexión a Eduroam con Symbian S60 v3 PacoEB5HTC Ing. Tec. Teleco. Sistemas Electrónicos. "Ajustes". #12;Conexión a Eduroam con Symbian S60 v3 PacoEB5HTC Ing. Tec. Teleco. Sistemas

  3. El Centro para la Salud Mundial del NCI anuncia las primeras becas de investigación para apoyar las tecnologías portátiles

    Cancer.gov

    El Centro para la Salud Mundial del NCI (CGH) anunció el otorgamiento de subvenciones que apoyarán el desarrollo y la validación de tecnologías portátiles y de bajo costo. Estas tecnologías tienen el potencial de mejorar la detección temprana, el diagnóstico y los tratamientos no invasivos o mínimamente invasivos de varios tipos de cáncer con una prevalencia particularmente alta en ciertos países con economías de ingreso bajo y mediano.

  4. Exciton e ects on optical absorption spectra of electroluminescent polymer poly(para-phenylenevinylene)

    E-print Network

    Harigaya, Kikuo

    Exciton e ects on optical absorption spectra of electroluminescent polymer poly spectra of the electroluminescent polymer poly(para-phenylenevinylene) (PPV) by using the intermediate The observation of remarkable electroluminescent properties of poly(para-phenylenevinylene) (PPV)1 has attracted

  5. GENERAL TECHNICAL REPORT PSW-GTR-245 Metodologa Utilizada en Cuba para Estimar

    E-print Network

    Standiford, Richard B.

    ocurre uno de estos fenómenos, lo cual puede ayudar a la toma de decisiones para la asignación de ocurre uno de estos fenómenos, lo cual puede ayudar a la toma de decisiones para la asignación óptima de

  6. ParA resolvase catalyzes site-specific excision of DNA from the Arabidopsis genome

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The small serine resolvase ParA from bacterial plasmids RK2 and RP4 catalyzes the recombination of two identical 133 bp recombination sites known as MRS. Previously, we reported that ParA is active in the fission yeast Schizosaccharomyces pombe. In this work, the parA recombinase gene was placed un...

  7. INSTITUTO NACIONAL DE PESQUISAS ESPACIAIS CONCURSO PBLICO PARA PROVIMENTO DE VAGAS EM CARGOS DE

    E-print Network

    INSTITUTO NACIONAL DE PESQUISAS ESPACIAIS CONCURSO PÚBLICO PARA PROVIMENTO DE VAGAS EM CARGOS DE NÍVEL SUPERIOR DA CARREIRA DE PESQUISA EM CIÊNCIA E TECNOLOGIA O DIRETOR DO INSTITUTO NACIONAL DE para o Concurso Público para Provimento de Vagas em Cargos de Nível Superior da Carreira de Pesquisa

  8. TOMADA DE DECISÃO PARA AÇÃO SOCIAL RESPONSÁVEL NO ENSINO DE CIÊNCIAS

    Microsoft Academic Search

    Wildson Luiz Pereira dos Santos; Eduardo Fleury Mortimer

    2001-01-01

    Resumo: O principal objetivo de currículos CTS é o letramento científico e tecnológico para que os alunos possam atuar como cidadãos, tomando decisões e agindo com responsabilidade social. No pre- sente artigo discutiremos o significado dessa meta educacional e apresentaremos uma revisão da litera- tura sobre suas implicações para o ensino de ciências. As considerações apresentadas contribuem para uma melhor

  9. Becas para la realizacin de estudios universitarios durante el curso acadmico

    E-print Network

    Escolano, Francisco

    Becas para la realización de estudios universitarios durante el curso académico 2013-2014 en las primera vez. ¿Qué incluye la beca? Becas para la realización de estudios universitarios durante el curso Becas para la realización de estudios universitarios durante el curso académico 2013-2014 en las

  10. Un modelo CSP para la planificación de la sustitución óptima de piezas

    Microsoft Academic Search

    C. Del Valle; R. M. Gasca; A. Márquez; M. T. Gómez

    Resumen. En este trabajo se presenta un modelo CSP (Problema de Satisfac- ción de Restricciones) para el secuenciamiento óptimo de tareas en la sustitu- ción de piezas defectuosas. Para ello, se parte de un modelo para la selección de secuencias óptimas de ensamblaje en sistemas con múltiples máquinas. El obje- tivo del plan es la minimización del tiempo total del

  11. Evaluación económica del proyecto “Sistema Estratégico de Transporte Público de Pasajeros para la Ciudad de Pasto”

    Microsoft Academic Search

    César Alberto Arcos Tiuso; Luis David Pulido Blasi; Abel Antonio Rincón Mesa; Ricardo Andrés Molina Suárez

    2011-01-01

    Este trabajo presenta la evaluación financiera y económica del “Sistema Estratégico de Transporte Público de Pasajeros para la Ciudad de Pasto - SETP”. Se desarrollo una metodología para la conceptualización y estimación de los beneficios y costos. Como resultado se destaca que el proyecto requiere del aporte de la Nación y de Pasto para ser financieramente viable. Asimismo, debido a

  12. Documentacin Acadmica Indispensable para la evaluacin de la solicitud. Estudios de Posgrado

    E-print Network

    Islas, León

    estudios de posgrado sean fuera de la UNAM. (2) Para estudios de doctorado en el extranjero. * En caso deDocumentación Académica Indispensable para la evaluación de la solicitud. Estudios de Posgrado salario o de licencia sin goce de salario para la realización de los estudios de posgrado. De los

  13. Accesibilidad para personas con debilidad motriz ASIC 18 de noviembre de 2010 Pg. 1 de 7

    E-print Network

    Fernández de Córdoba, Pedro

    Accesibilidad para personas con debilidad motriz Windows XP ASIC ­ 18 de noviembre de 2010 Pág. 1: · Pulse T Utilizando el ratón #12;Accesibilidad para personas con debilidad motriz Windows XP ASIC ­ 18 de)... #12;Accesibilidad para personas con debilidad motriz Windows XP ASIC ­ 18 de noviembre de 2010 Pág. 3

  14. Accesibilidad para personas con debilidad visual ASIC 18 de noviembre de 2010 Pg. 1 de 6

    E-print Network

    Fernández de Córdoba, Pedro

    Accesibilidad para personas con debilidad visual Windows XP ASIC ­ 18 de noviembre de 2010 Pág. 1: · Pulse T #12;Accesibilidad para personas con debilidad visual Windows XP ASIC ­ 18 de noviembre de 2010 seleccionando las opciones adecuadas). #12;Accesibilidad para personas con debilidad visual Windows XP ASIC ­ 18

  15. Amazon Land Wars in the South of Para

    NASA Technical Reports Server (NTRS)

    Simmons, Cynthia S.; Walker, Robert T.; Arima, Eugenio Y.; Aldrich, Stephen P.; Caldas, Marcellus M.

    2007-01-01

    The South of Para, located in the heart of the Brazilian Amazon, has become notorious for violent land struggle. Although land conflict has a long history in Brazil, and today impacts many parts of the country, violence is most severe and persistent here. The purpose of this article is to examine why. Specifically, we consider how a particular Amazonian place, the so-called South of Para has come to be known as Brazil's most dangerous badland. We begin by considering the predominant literature, which attributes land conflict to the frontier expansion process with intensified struggle emerging in the face of rising property values and demand for private property associated with capitalist development. From this discussion, we distill a concept of the frontier, based on notions of property rights evolution and locational rents. We then empirically test the persistence of place-based violence in the region, and assess the frontier movement through an analysis of transportation costs. The findings from the analyses indicate that the prevalent theorization of frontier violence in Amazonia does little to explain its persistent and pervasive nature in the South of Para. To fill this gap in understanding, we develop an explanation based the geographic conception of place, and we use contentious politics theory heuristically to elucidate the ways in which general processes interact with place specific history to engender a landscape of violence. In so doing, we focus on environmental, cognitive, and relational mechanisms (and implicated structures), and attempt to deploy them in an explanatory framework that allows direct observation of the accumulating layers of the region's tragic history. We end by placing our discussion within a political ecological context, and consider the implications of the Amazon Land War for the environment.

  16. Perspectivas Futuras para o Observatório do Pico dos Dias

    NASA Astrophysics Data System (ADS)

    Bruch, Albert

    2004-02-01

    Com o Observatório Gemini plenamente operacional e o telescópio SOAR iniciando suas operações em breve, a astronomia observacional brasileira encontra-se no auge de uma transformação profunda que terá um impacto grave no Observatório do Pico dos Dias - OPD. Refletimos aqui sobre a natureza desse impacto e estratégias para manter a competitividade do OPD. Não queremos apresentar receitas prontas, mas idéias que poderão servir como base de discussão sobre o uso inteligente dos telescópios do OPD como parte do conjunto de instrumentos disponíveis à comunidade astronômica brasileira.

  17. The infrared dielectric function of solid para-hydrogen

    NASA Astrophysics Data System (ADS)

    Kettwich, Sharon C.; Anderson, David T.; Walker, Mark A.; Tuntsov, Artem V.

    2015-06-01

    We report laboratory measurements of the absorption coefficient of solid para-H2, within the wavelength range from 1 to 16.7 ?m, at high spectral resolution. In addition to the narrow rovibrational lines of H2 which are familiar from gas-phase spectroscopy, the data manifest double transitions and broad phonon branches that are characteristic specifically of hydrogen in the solid phase. These transitions are of interest because they provide a spectral signature which is independent of the impurity content of the matrix. We have used our data, in combination with a model of the ultraviolet absorptions of the H2 molecule, to construct the dielectric function of solid para-H2 over a broad range of frequencies. Our results will be useful in determining the electromagnetic response of small particles of solid hydrogen. The dielectric function makes it clear that pure H2 dust would contribute to infrared (IR) extinction predominantly by scattering starlight, rather than absorbing it, and the characteristic IR absorption spectrum of the hydrogen matrix itself will be difficult to observe.

  18. Do Well, Be Well with Diabetes 2013 1 Formulario de Registro para Personas con Diabetes Formulario de Registro para Personas con Diabetes 2013

    E-print Network

    Do Well, Be Well with Diabetes ­ 2013 1 Formulario de Registro para Personas con Diabetes Formulario de Registro para Personas con Diabetes ­ 2013 Si usted NO TIENE diabetes, por favor NO LLENE este sobre diabetes en el Condado de _______________. D. El código postal en mi casa es __ __ __ __ __. E

  19. Do Well, Be Well with Diabetes 2013 1 Formulario de Conclusin para Personas con Diabetes Formulario de Conclusin para Personas con Diabetes 201

    E-print Network

    Do Well, Be Well with Diabetes ­ 2013 1 Formulario de Conclusión para Personas con Diabetes Formulario de Conclusión para Personas con Diabetes ­ 201 Si usted NO TIENE diabetes, por favor NO LLENE este últimos cuatro números de mi número telefónico son __ __ __ __. C. Marque todas las clases sobre diabetes

  20. Targeting the chromosome partitioning protein ParA in tuberculosis drug discovery

    PubMed Central

    Nisa, Shahista; Blokpoel, Marian C. J.; Robertson, Brian D.; Tyndall, Joel D. A.; Lun, Shichun; Bishai, William R.; O'Toole, Ronan

    2010-01-01

    Objective To identify inhibitors of the essential chromosome partitioning protein ParA that are active against Mycobacterium tuberculosis. Methods Antisense expression of the parA orthologue MSMEG_6939 was induced on the Mycobacterium smegmatis background. Screening of synthetic chemical libraries was performed to identify compounds with higher anti-mycobacterial activity in the presence of parA antisense. Differentially active compounds were validated for specific inhibition of purified ParA protein from M. tuberculosis (Rv3918c). ParA inhibitors were then characterized for their activity towards M. tuberculosis in vitro. Results Under a number of culture conditions, parA antisense expression in M. smegmatis resulted in reduced growth. This effect on growth provided a basis for the detection of compounds that increased susceptibility to expression of parA antisense. Two compounds identified from library screening, phenoxybenzamine and octoclothepin, also inhibited the in vitro ATPase activity of ParA from M. tuberculosis. Structural in silico analyses predict that phenoxybenzamine and octoclothepin undergo interactions compatible with the active site of ParA. Octoclothepin exhibited significant bacteriostatic activity towards M. tuberculosis. Conclusions Our data support the use of whole-cell differential antisense screens for the discovery of inhibitors of specific anti-tubercular drug targets. Using this approach, we have identified an inhibitor of purified ParA and whole cells of M. tuberculosis. PMID:20810423

  1. ParaText : scalable text analysis and visualization.

    SciTech Connect

    Dunlavy, Daniel M.; Stanton, Eric T.; Shead, Timothy M.

    2010-07-01

    Automated analysis of unstructured text documents (e.g., web pages, newswire articles, research publications, business reports) is a key capability for solving important problems in areas including decision making, risk assessment, social network analysis, intelligence analysis, scholarly research and others. However, as data sizes continue to grow in these areas, scalable processing, modeling, and semantic analysis of text collections becomes essential. In this paper, we present the ParaText text analysis engine, a distributed memory software framework for processing, modeling, and analyzing collections of unstructured text documents. Results on several document collections using hundreds of processors are presented to illustrate the exibility, extensibility, and scalability of the the entire process of text modeling from raw data ingestion to application analysis.

  2. Pneumatic protection applied to an airbag for para-gliders

    NASA Astrophysics Data System (ADS)

    Raievski, V.; Valladas, G.

    1998-02-01

    We present a theory of pneumatic protection based on the laws of thermodynamics, elasticity and fluid mechanics. A general pneumatic protection system is made up of several communicating compartments, the differences in pressure of the compartments generating a transfer of mass and energy between them. The transfer offers interesting possibilities to improve the performance of the system. An example of this type of protection in aerial sport is the airbag for para-gliders, it is used in this paper to illustrate the theory. As the pressure in the airbag depends uniquely on its volume, the geometric model in the theory can be simplified. Experiments carried out with crash-test dummies equipped with sensors have confirmed the theoretical predictions.

  3. Para-Sexiphenyl Layers Grown On Light Sensitive Polymer Substrates

    NASA Astrophysics Data System (ADS)

    Hernandez-Sosa, G.; Simbrunner, C.; Höfler, T.; Moser, A.; Werzer, O.; Kunert, B.; Trimmel, G.; Kern, W.; Resel, R.; Sitter, H.

    In this contribution the deposition of Para-sexiphenyl (PSP) layers on poly (diphenyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate) (PPNB) by Hot Wall Epitaxy (HWE) is reported. It is demonstrated that pre-treating the substrate by UV-illumination induces a clear change in the morphology of the grown PSP films due to the polarity modification of the substrate surface. PPNB surface polarity increases when illuminated by UV via photo-Fries rearrangement. By detailed atomic force microscopy analysis the influence on the growth kinetics by the substrate temperature, deposition time and particularly by the UVtreatment of the substrate was investigated. A high crystalline order of the films is underlined by the observation of growth spirals and terraced islands, providing mono-layer step heights of standing PSP-molecules.

  4. Proyecto para la medición sistemática de seeing en CASLEO

    NASA Astrophysics Data System (ADS)

    Fernández Lajus, E.; Forte, J. C.

    La calidad del seeing astronómico es ciertamente uno de los parámetros mas importantes que caracterizan el sitio de un observatorio. Por tanto se desea determinar si el alto valor de seeing observado con el telescopio de 2.15 m se debe a efectos internos y/o del entorno a la cupula o si se debe simplemente al seeing propio del lugar. El actual mecanismo de refrigeración del espejo primario del 2.15, parece haber mejorado notablemente la calidad del seeing. Sin embargo se hace necesario saber hasta que punto el valor del seeing puede ser mejorado. La primera etapa del proyecto consistió en la puesta a punto del telescopio emplazado para este propósito y la adquisición de las primeras medidas tentativas de seeing.

  5. Sensitization to para-phenylenediamine from a streetside temporary tattoo.

    PubMed

    Marcoux, Danielle; Couture-Trudel, Pierre-Marc; Riboulet-Delmas, Gisèle; Sasseville, Denis

    2002-01-01

    "Temporary" henna tattoos (skin painting or pseudotattooing) are in vogue among American and European youngsters, particularly when vacationing. A 17-year-old girl presented with a severe contact dermatitis of her scalp and face after having dyed her hair with a permanent oxidative hair dye. She denied previous use of oxidative hair dye. Eight months earlier she had a "temporary" henna tattoo applied on her shoulder by a transient artist in downtown Montreal and developed an acute, erythematous, edematous eruption that resolved with residual, prolonged hyperpigmentation. As henna tattooing is a lengthy and tedious procedure, para-phenylenediamine (PPD) may be added to the mixture to accelerate the process, to darken, and to give more precision to the design. This short-lived fad can have longer-term sequelae then expected, ranging from postinflammatory hyperpigmentation of the tattoo site to permanent sensitization to PPD and related compounds. PMID:12437549

  6. Un metodo adaptativo para el modelo Bidominio en electrocardiologia

    E-print Network

    Bendahmane, Mostafa; Baier, Ricardo Ruiz

    2008-01-01

    This paper presents a finite-volume method, together with fully adaptive multi-resolution scheme to obtain spatial adaptation, and a Runge-Kutta-Fehlberg scheme with a local time-varying step to obtain temporal adaptation, to solve numerically the known "bidominio" equations that model the electrical activity of the tissue in the myocardium. Two simple models are considered for membrane flows and ionic currents. First we define an approximate solution and we verify its convergence to the corresponding weak solution of the continuum problem, obtaining in this way an alternative demonstration that the continuum problem is well-posed. Next we introduce the multiresolution technique and derive an optimal noise reduction threshold. The efficiency and precision of our method is seen in the reduction of machine time, memory usage, and errors in comparison to other methods. ----- En este trabajo se presenta un metodo de volumenes finitos enriquecido con un esquema de multiresolucion completamente adaptativo para obte...

  7. Para-Hydrogen-Enhanced Gas-Phase Magnetic Resonance Imaging

    SciTech Connect

    Bouchard, Louis-S.; Kovtunov, Kirill V.; Burt, Scott R.; Anwar,M. Sabieh; Koptyug, Igor V.; Sagdeev, Renad Z.; Pines, Alexander

    2007-02-23

    Herein, we demonstrate magnetic resonance imaging (MRI) inthe gas phase using para-hydrogen (p-H2)-induced polarization. A reactantmixture of H2 enriched in the paraspin state and propylene gas is flowedthrough a reactor cell containing a heterogenized catalyst, Wilkinson'scatalyst immobilized on modified silica gel. The hydrogenation product,propane gas, is transferred to the NMR magnet and is spin-polarized as aresult of the ALTADENA (adiabatic longitudinal transport and dissociationengenders net alignment) effect. A polarization enhancement factor of 300relative to thermally polarized gas was observed in 1D1H NMR spectra.Enhancement was also evident in the magnetic resonance images. This isthe first demonstration of imaging a hyperpolarized gaseous productformed in a hydrogenation reaction catalyzed by a supported catalyst.This result may lead to several important applications, includingflow-through porous materials, gas-phase reaction kinetics and adsorptionstudies, and MRI in low fields, all using catalyst-free polarizedfluids.

  8. Cosmoeducação: uma proposta para o ensino de astronomia

    NASA Astrophysics Data System (ADS)

    Medeiros, L. A. L.; Jafelice, L. C.

    2003-08-01

    Entende-se por cosmoeducação o desenvolvimento vivencial da unidade homem-cosmo. Este conceito é norteado pela psicologia transpessoal, que estuda o ser humano em sua totalidade, onde suas relações ecológicas e cósmicas são de grande importância. Constata-se uma necessidade latente no ser humano moderno em resgatar uma relação holística com o Universo. Neste trabalho exploramos meios de cultivar a consciência de que o ser humano constitui parte integrante do cosmo e se relaciona com este com o objetivo de promover em si uma percepção ambiental mais ampla. Nossa hipótese de trabalho inicial foi que o ensino de conteúdos básicos em astronomia realizado através de uma abordagem holística, que incorpore práticas vivenciais correlacionadas àqueles conteúdos, pode despertar no indivíduo sua identidade cósmica. O método que utilizamos é o fenomenológico e o universo desta pesquisa é um grupo de estudantes da disciplina de Astronomia (Curso de Licenciatura em Geografia/UFRN), onde realizamos observação participante, entrevistas, depoimentos e as práticas vivenciais mencionadas. Neste caso estamos desenvolvendo e adaptando exercícios de algumas técnicas terapêuticas de psicologia transpessoal, que um de nós (LALM) tem aplicado no contexto clínico, para trabalhar aspectos cognitivos envolvidos naquele processo de conscientização cósmica. Resultados parciais claramente referendam a hipótese inicial. Um resultado a destacar é fruto de uma dinâmica de representação corporal interiorizada do eclipse lunar, envolvendo um pequeno grupo daqueles estudantes, na qual conteúdos míticos afloraram de maneira espontânea e contundente para todos, sugerindo ressonância, ou pelo menos isomorfismo, entre o macro e o microcosmo. Este e outros resultados são discutidos em detalhe neste trabalho. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temáticos/FAPESP).

  9. Deficiencias del test de la razon de verosimilitud para contrastar ciertas hipotesis con restricciones de orden

    Microsoft Academic Search

    José A. Menéndez Fernández; Bonifacio Salvador González

    1987-01-01

    Resumen  En este trabajo se estudian problemas de test de hipótesis para el vector de las medias de poblaciones normales independientes\\u000a con varianzas conocidas, cuando ambas, la hipótesis nula y la alternativa, imponen restricciones de orden sobre los parámetros.\\u000a \\u000a Se demuestra que para las hipótesis planteadas el test de razón de verosimilitud (TRV) está dominado por otro TRV para hipótesis\\u000a que

  10. Use of UV ParaLens Adapter for Detection of Acid-Fast Organisms

    Microsoft Academic Search

    KIMBERLEY V. PATTERSON; CLIFFORD L. MCDONALD; BRENDA F. MILLER; ANDKIMBERLE C. CHAPIN

    Auramine-stained mycobacterial smears from 136 clinical specimens were interpreted by using the UV ParaLens adapter (Beckton Dickinson), and results were compared with smear interpretations using a traditionalfluorescentmicroscopeandculture.ThesensitivityandspecificityoftheParaLenswere84and93%, respectively. Smears yielding discrepant results were overstained by the Kinyoun method. Overall, the sensitivity of auramine-stained smears interpreted with the UV ParaLens was comparable to that of Kinyoun-stained smears. The recent increase in

  11. Surgical outcome of para-aortic lymph node dissection preserving neural tissue based on anatomical evaluations

    Microsoft Academic Search

    Masato Nomura; Chikara Kunisaki; Hirotoshi Akiyama; Goro Matsuda; Yuichi Otsuka; Hidetaka Ono; Masazumi Takahashi; Hiroshi Shimada

    2005-01-01

    The anatomical distribution of the para-aortic lymph nodes was studied to establish an effective operative procedure that\\u000a preserves neural tissue for patients with advanced gastric cancer. Para-aortic lesions were anatomically examined in 31 cadavers,\\u000a and histologic preparations of 14 cadavers were used to evaluate the relationship between para-aortic lymph nodes and surrounding\\u000a neural tissue. Surgical results were analyzed in patients

  12. Ammonium-excreting Azospirillum sp. become intracellularly established in maize ( Zea mays ) para-nodules

    Microsoft Academic Search

    C. Christiansen-Weniger; Jos Vanderleyden

    1994-01-01

    Maize seedlings develop nodule-like tumour knots (para-nodules) along primary roots when treated with the auxin 2,4-dichlor-phenoxy-acetic acid (2,4-D). Inoculated NH4+-excreting Azospirillum brasilense cells were shown to colonize these tumours, mostly intracellularly, promoting a high level of N2 fixation when microaerophilic conditions were imposed. The nitrogenase activity inside the para-nodules was less sensitive to free O2 than in non-para-nodulating roots. Both

  13. preparado por Alvaro Veiga, PUC-Rio, alvf@ele.puc-rio.br Modelos estocsticos para avaliao de contratos deModelos estocsticos para avaliao de contratos de

    E-print Network

    Liu, I-Shih

    ); Gestão de ativos e passivos para o setor de petróleo (Petrobras, 2009-2011); Cálculo de reserva IBNR petróleo (Petrobras, 2008- 2009); Indicadores de qualidade de geração (IPEA, 2011-2012); Modelo de

  14. The Ratio of Ortho- to Para-H2 in Photodissociation Regions

    E-print Network

    Amiel Sternberg; David A. Neufeld

    1998-12-02

    We discuss the ratio of ortho- to para-H2 in photodissociation regions (PDRs). We draw attention to an apparent confusion in the literature between the ortho-to-para ratio of molecules in FUV-pumped vibrationally excited states, and the H2 ortho-to-para abundance ratio. These ratios are not the same because the process of FUV-pumping of fluorescent H2 emission in PDRs occurs via optically thick absorption lines. Thus, gas with an equilibrium ratio of ortho- to para-H2 equal to 3 will yield FUV-pumped vibrationally excited ortho-to-para ratios smaller than 3, because the ortho-H2 pumping rates are preferentially reduced by optical depth effects. Indeed, if the ortho and para pumping lines are on the ``square root'' part of the curve-of-growth, then the expected ratio of ortho and para vibrational line strengths is the square root of 3, ~ 1.7, close to the typically observed value. Thus, contrary to what has sometimes been stated in the literature, most previous measurements of the ratio of ortho- to para-H2 in vibrationally excited states are entirely consistent with a total ortho-to-para ratio of 3, the equilibrium value for temperatures greater than 200 K. We present an analysis and several detailed models which illustrate the relationship between the total ratios of ortho- to para-H2 and the vibrationally excited ortho-to-para ratios in PDRs. Recent Infrared Space Observatory (ISO) measurements of pure rotational and vibrational H2 emissions from the PDR in the star-forming region S140 provide strong observational support for our conclusions.

  15. Para-hydrogen induced polarization in heterogeneous hydrogenationreactions

    SciTech Connect

    Koptyug, Igor V.; Kovtunov, Kirill; Burt, Scott R.; Anwar, M.Sabieh; Hilty, Christian; Han, Song-I; Pines, Alexander; Sagdeev, Renad Z.

    2007-01-31

    We demonstrate the creation and observation ofpara-hydrogen-induced polarization in heterogeneous hydrogenationreactions. Wilkinson's catalyst, RhCl(PPh3)3, supported on eithermodified silica gel or a polymer, is shown to hydrogenate styrene intoethylbenzene and to produce enhanced spin polarizations, observed throughNMR, when the reaction was performed with H2 gas enriched in the paraspinisomer. Furthermore, gaseous phase para-hydrogenation of propylene topropane with two catalysts, the Wilkinson's catalyst supported onmodified silica gel and Rh(cod)(sulfos) (cod = cycloocta-1,5-diene;sulfos) - O3S(C6H4)CH2C(CH2PPh2)3) supported on silica gel, demonstratesheterogeneous catalytic conversion resulting in large spin polarizations.These experiments serve as a direct verification of the mechanism ofheterogeneous hydrogenation reactions involving immobilized metalcomplexes and can be potentially developed into a practical tool forproducing catalyst-free fluids with highly polarized nuclear spins for abroad range of hyperpolarized NMR and MRI applications.

  16. Uninfected Para-Anastomotic Aneurysms after Infrarenal Aortic Grafting

    PubMed Central

    Nano, Giovanni; Cusmai, Francesco; Ramponi, Fabio; Stegher, Silvia; Dell'Aglio, Daniela; Malacrida, Giovanni; Tealdi, Domenico G.

    2009-01-01

    Purpose This single-institution retrospective review examines the management of uninfected para-anastomotic aneurysms of the abdominal aorta (PAAA), developed after infrarenal grafting. Materials and Methods From October 1979 to November 2005, 31 PAAA were observed in our Department. Twenty-six uninfected PAAA of degenerative etiology, including 24 false and 2 true aneurysms, were candidates for intervention and retrospectively included in our database for management and outcome evaluation. Six (23%) patients were treated as emergencies. Surgery included tube graft interposition (n = 12), new reconstruction (n = 8), and graft removal with extra-anatomic bypass (n = 3). Endovascular management (n = 3) consisted of free-flow tube endografts. Results The mortality rate among the elective and emergency cases was 5% and 66.6%, respectively (p = 0.005). The morbidity rate in elective cases was 57.8%, whereas 75% in emergency cases (p = 0.99). The survival rate during the follow-up was significantly higher for elective cases than for emergency cases. Conclusion Uninfected PAAA is a late complication of aortic grafting, tends to evolve silently and is difficult to diagnose. The prevalence is underestimated and increases with time since surgery. The mortality rate is higher among patients treated as an emergency than among patients who undergo elective surgery, therefore, elective treatment and aggressive management in the case of pseudoaneurysm are the keys to obtain a good outcome. Endovascular treatment could reduce mortality. Patients who undergo infrarenal aortic grafting require life-long surveillance after surgery. PMID:19430556

  17. Para-dichlorobenzene toxicity – a review of potential neurotoxic manifestations

    PubMed Central

    Dubey, Divyanshu; Sharma, Vibhash D.; Pass, Steven E.; Sawhney, Anshudha

    2014-01-01

    Background: Para-dichlorobenzene (PDCB) is an active ingredient of mothballs, deodorizers and fumigants. Due to the easy availability of this chemical, there is a considerable risk for accidental or intentional toxic exposure. Recently, multiple cases of PDCB toxicity due to mothball ingestion were reported. PDCB toxicity can affect multiple organ systems including liver, kidneys, skin, lung and the central nervous system (CNS). CNS toxicity often results in leukoencephalopathy and heterogeneous neurological manifestations. Objectives: The objective of this study was to illustrate the clinical presentation, imaging findings, diagnosis and management of PDCB toxicity. Methods: We carried out a literature review of the pharmacological and toxicological properties of PDCB. Conclusions: PDCB and other aromatic hydrocarbons are capable of CNS tissue damage and in promoting functional neurological decline. While very little is currently known about prevalence of PDCB addiction, it cannot be ruled out that its illicit use among young people is under-recognized. The number of cases of PDCB toxicity might also rise due to the increasing industrial and domestic use of this chemical. PMID:24790648

  18. Quadrupole Approximation for Para-Positronium in Relativistic Schrödinger Theory

    E-print Network

    M. Mattes; M. Sorg

    2011-09-11

    The non-relativistic energy levels of para-positronium are calculated in the quadrupole approximation of the interaction potential. This approximation technique takes into account the anisotropy of the electrostatic electron-positron interaction in the lowest order. The states due to different values of the quantum number $(l_z)$ of angular momentum are found to be no longer degenerate as is the case in the conventional theory. The physical origin of this elimination of the conventional degeneracy may intuitively be attributed to the state-dependent inertial \\emph{broadening} of the rotating charge clouds; the corresponding \\emph{anisotropic} deformation (in the quadrupole approximation) lowers then the negative electrostatic interaction energy. The result of this influence of anisotropy is that the states with $l_z=0$ adopt smaller binding energy whereas the states with maximal value of $|l_z|$ (for fixed principal quantum number $n$) have the largest binding energy within the angular momentum multiplet $(-|l_{z,\\mathrm{max}}| \\le l_z \\le |l_{z,\\mathrm{max}}|)$. This yields a certain kind of electric fine-structure splitting with the splitted RST levels being placed in a relatively narrow band around the (highly degenerated) conventional levels.

  19. GLOBAL WATER WATCH, UMA REDE MUNDIAL PARA MONITORAMENTO DE ÁGUA COM PARTICIPAÇÃO COMUNITÁRIA

    Microsoft Academic Search

    BRYAN L. DUNCAN; WILLIAM G. DEUTSCH; CARLOS EDUARDO SISTE

    Global Water Watch (GWW) é uma rede para monitoramento da água, baseada na participação da comunidade, e coordenado pela universidade de Auburn, Alabama, Estados Unidos da América. Os principais objetivos do GWW são fornecer oficinas de treinamento, assistência técnica, e gerência dos dados para os grupos dos cidadãos que têm interesse em avaliação e proteção de bacias hidricas e fontes

  20. Um framework para renderizaes foto-realistas de cenas com realidade aumentada

    E-print Network

    CLE 2011 Um framework para renderizações foto-realistas de cenas com realidade aumentada Aldo René aumentada foto-realista é conseguir um resultado foto realista a traves de uma única renderização direta.elsevier.nl/locate/entcs #12;1 Introdução Para a industria do cinema e outras que dependem de imagens foto-realistas, é

  1. Diseo y desarrollo del subsistema de deteccin y reaccin de una plataforma para la prevencin de

    E-print Network

    Garcia-Alfaro, Joaquin

    Diseño y desarrollo del subsistema de detección y reacción de una plataforma para la prevención de artículo presentamos una plataforma que proporciona una solución descentralizada para prevenir este tipo de presentamos el diseño y desarrollo del subsistema de detección y reacción de una plataforma que proporciona

  2. CRECTEALC-CAMPUS BRASIL ANLISE COMPARATIVA DE TCNICAS DE INFERNCIA ESPACIAL PARA IDENTIFICAO

    E-print Network

    CRECTEALC-CAMPUS BRASIL ANÁLISE COMPARATIVA DE TÉCNICAS DE INFERÊNCIA ESPACIAL PARA IDENTIFICAÇÃO DE UNIDADES DE SUSCETIBILIDADE AOS MOVIMENTOS DE MASSA NA REGIÃO DE SÃO SEBASTIÃO, SÃO PAULO, BRASIL Ciência e Tecnologia Espaciais para América Latina e o Caribe ­ CRECTEALC (Campus Brasil); Ministério da

  3. Oferta laboral y seguro de desempleo: Estimaciones para la economía chilena

    Microsoft Academic Search

    Alejandra Mizala; Pilar Romaguera; Paulo Henríquez

    1998-01-01

    El objetivo de este trabajo es presentar una estimación de oferta laboral para Chile, y luego, utilizar los resultados obtenidos para estimar el impacto de diferentes esquemas institucionales de seguro de desempleo sobre la decisión de trabajar de los individuos. En la primera parte del estudio se estiman dos modelos de oferta de trabajo, diferenciados según género, utilizando la información

  4. Estado del desarrollo del control para la gestin de las funciones de tiempo en

    E-print Network

    Politècnica de Catalunya, Universitat

    Estado del desarrollo del control para la gestión de las funciones de tiempo en Visual TRANSIN necesitamos para VT? -.Discretizar temporalmente (tiempos de control). -.Operar con funciones. -.Encontrar. -.Automático. ·Otros parámetros: -.Número de problema. -.Régimen. -.Intervalos. #12;Funciones de Tiempo ·Origen

  5. Sobre el test de máxima potencia para hipótesis nula simple contra hipótesis alternativa simple

    Microsoft Academic Search

    Pedro José Paúl Escolano; Padl Escolano

    1984-01-01

    Resumen  El propósito de este trabajo es dar una construcción explícita del test de máxima potencia para un constraste de hipótesis\\u000a paramétrico en el que tanto la hipótesis nual como la hipótesis alternativa son simples; utilizando para ello técnicas de\\u000a Análisis Funcional y de Programación Matemática.

  6. Observation of nonstatistical ortho--para ratio in hydrogen recombination at low temperatures

    SciTech Connect

    Xiao, Y.M.; Buchman, S.; Pollack, L.; Kleppner, D.; Greytak, T.J. (Department of Physics, MIT, Cambridge, Massachusetts 02139 (United States))

    1992-03-01

    We have demonstrated that the molecular hydrogen obtained from atomic recombination at 300 mK has nonstatistic ortho--para ratio. The ortho para conversion is less than 3% in the vibrational relaxation phase. We suggest that it is possible to carry out detailed comparison between calculations and measurements at conditions similar to our experiments.

  7. Lanier's patents for vacu-and para-planes 1 IMPLEMENTING LANIER'S PATENTS FOR STABLE, SAFE,

    E-print Network

    Stokes, Yvonne

    Lanier's patents for vacu- and para-planes 1 IMPLEMENTING LANIER'S PATENTS FOR STABLE, SAFE, ECONOMICAL ULTRA-SHORT WING VACU- AND PARA-PLANES. G.C. Hocking1, Y.M. Stokes2 and W.L. Sweatman3 Six patents design described by Ed- ward H. Lanier in a series of six United States patents obtained from 1930

  8. Listado 2012 de bibliografa sobre EXTENSIN UNIVERSITARIA para Amrica, Central, Amrica

    E-print Network

    Vásquez, Carlos

    Sul e Caribe Marcelo Luis López ­ Norma Beatriz Di Filippo Ordoñez ­ Laura Fabiola del V. Aramayo SAN SALVADOR DE JUJUY / REPÚBLICA ARGENTINA ­ diciembre de 2012 EL SIKU / ISBN: 978-987-26670-1-6 #12;- 2 de 35 este catálogo para encontrar bibliografia para os seus trabalhos por favor citar a fonte. Marcelo Luis

  9. Propuesta cooperativa socialista para la prestación de los servicios de Agua Potable y Saneamiento

    Microsoft Academic Search

    José Luis Morán Esparza

    2007-01-01

    El presente trabajo de investigación tiene por finalidad ofrecer la propuesta a las asociaciones cooperativas de un Modelo que sirva de guía u orientación para el desarrollo y crecimiento de las mismas y para generar el crecimiento personal y colectivo de quienes participan en este tipo de organizaciones de la economía social, participativa y protagónica. La intención es coadyuvar a

  10. Matemtica para ubicarse En cualquier lugar del planeta y ms all con el GPS

    E-print Network

    Groisman, Pablo

    Matemática para ubicarse En cualquier lugar del planeta y más allá con el GPS matbaires 09 Pablo Groisman Dpto. de Matemática FCEN-UBA CONICET #12; ¿Qué es GPS? #12; Aplicaciones #12 corrección de errores para los GPS. Reloj atómico que marca la hora oficial de EEUU. (In) presición: 1

  11. Aplicacin del paradigma CellDEVS binario con tiempo para modelado y simulacin de sistemas

    E-print Network

    Wainer, Gabriel

    Aplicación del paradigma Cell­DEVS binario con tiempo para modelado y simulación de sistemas verificación de los modelos. De esta forma se puede lograr el desarrollo eficiente y reducido en costo de soluciones de simulación para estos sistemas. Keywords: Simulación a Eventos Discretos, Modelado, espacios de

  12. Modelo 3C de Colaborao para o desenvolvimento de Sistemas Colaborativos

    E-print Network

    Barbosa, Alberto

    58 Modelo 3C de Colaboração para o desenvolvimento de Sistemas Colaborativos Mariano Pimentel1 de sistemas colaborativos. Constata-se que este modelo é útil em diferentes etapas do processo de. O Modelo 3C de Colaboração é frequentemente usado pela literatura para classificar os sistemas

  13. Meta-modelos para Aplicaes de Hipermdia Adaptativa e Meta-adaptao

    E-print Network

    Endler, Markus

    , propondo um meta-modelo de referência para Sistemas de Hipermídia Adaptativa (Adaptive Hypermedia Systems sistemas. Além disto, o meta-modelo proposto permite identificar os principais aspectos relacionados àMeta-modelos para Aplicações de Hipermídia Adaptativa e Meta-adaptação Patricia Seefelder de Assis

  14. Un modelo de reemplazamiento para un sistema sujeto a shoks poissonianos

    Microsoft Academic Search

    Alfredo García Güemes

    1994-01-01

    En este artículo se considera un sistema con componentes sujetos a shocks que se presentan de acuerdo con n procesos de Poisson homogéneos. Estos componentes, deben de ser reemplazados al producirse un determinado número de shocks. Se obtiene la esperanza del coste por unidad de tiempo, y unas condiciones suficientes para la existencia y para la no existencia de una

  15. Bases morfofisiológicas para maior tolerância dos híbridos modernos de milho a altas densidades de plantas

    Microsoft Academic Search

    Luís Sangoi; Milton Luiz de Almeida; Paulo Regis Ferreira da Silva; Gilber Argenta

    2002-01-01

    RESUMO O lançamento de híbridos de milho tolerantes ao aumento da densidade de plantas contribuiu para o incremento do potencial produtivo da cultura na segunda metade do século XX. Objetiva-se com esta revisão de literatura discutir características morfológicas, fisiológicas, fenológicas e alométricas que contribuíram para maior adaptação do milho a elevadas densidades de plantas. Os processos de seleção utilizados pelos

  16. Una gua de navegacin para las familias de Wisconsin con nios y

    E-print Network

    Wisconsin at Madison, University of

    Una guía de navegación para las familias de Wisconsin con niños y jóvenes con necesidades especiales de salud y discapacidades. GUÍA DE RECURSOS #12;#12;1 GUÍA DE RECURSOS Una guía de navegación para las familias de Wisconsin con niños y jóvenes con necesidades especiales de salud y discapacidades

  17. Los CDC harn pruebas para detectar formaldehdo en casas mviles y trileres

    E-print Network

    Los CDC harán pruebas para detectar formaldehído en casas móviles y tráileres A solicitud de FEMA, los Centros para el Control y la Prevención de Enfermedades (CDC) harán pruebas de detección de formal dehído en un total de 500 casas móviles y tráileres entregados por FEMA. Los CDC harán estas pruebas en

  18. Convocatoria para la propuesta de cursos de verano 2013 Informacin de la convocatoria

    E-print Network

    Escolano, Francisco

    Convocatoria para la propuesta de cursos de verano 2013 Información de la convocatoria Publicación , versión OpenOffice ) Hoja para el cálculo del presupuesto del curso (versión Office , versión OpenOffice ) Actualizadas 30/01/2013 Resolución provisional de los cursos de verano (publicación 11/02/2013) Acta de la

  19. Convocatoria para los cursos de verano de la Universidad de Alicante "Rafael Altamira" 2014

    E-print Network

    Escolano, Francisco

    Convocatoria para los cursos de verano de la Universidad de Alicante "Rafael Altamira" 2014 escaneado por ambas caras) PDF WORD Resolución final (3/03/2014) Relación definitiva de cursos procedentes de Alicante Título: CONVOCATORIA PARA LA PRESENTACIÓN DE PROPUESTAS DE CURSOS DE VERANO DE LA

  20. Una Aproximación basada en i* para el análisis de Requisitos de Seguridad en Almacenes de Datos

    Microsoft Academic Search

    E. Soler; V. Stefanov; J. N. Mazón; J. Trujillo; E. Fernández-Medina; M. Piattini

    Resumen— Las propuestas de análisis de requisitos para almacenes de datos (AD) se centran únicamente en las necesidades de información de los usuarios, sin tener en cuenta otro tipo de requisitos como la seguridad o el rendimiento. Sin embargo, el modelado de estos aspectos en etapas tempranas del desarrollo es fundamental para obtener un AD que satisfaga las expectativas del

  1. INTELIGENCIA TERRITORIAL E INNOVACIN PARA EL DESARROLLO SOCIO-ECOLGICA TRANSICIN

    E-print Network

    Paris-Sud XI, Université de

    desarrollo sostenible que mejoren el bienestar de los ciudadanos y de las comunidades territoriales. Catalyse frágiles y para al desarrollo sostenible de territorios vulnerables. Territorial Intelligence concept La eficacia de acciones concertadas para el desarrollo sostenible. caENTI caENTI ha integrado una red de

  2. Saberes locales: un aporte clave para el desarrollo sustentable de la regin andina

    E-print Network

    Richner, Heinz

    Unidas sobre Desarrollo Sostenible Río+20 (2012): "Somos conscientes de que los conocimientosSaberes locales: un aporte clave para el desarrollo sustentable de la región andina Edición Regional Sudamérica No. 6 Junio 2013 Los saberes locales son de suma importancia tanto para el desarrollo

  3. Um curso introdutrio astronomia para a formao inicial de professores de

    E-print Network

    dos Santos, C.A.

    Um curso introdutório à astronomia para a formação inicial de professores de ensino fundamental, em Marchi Um curso introdutório à astronomia para a formação inicial de professores de ensino fundamental do Curso de Mestrado Profissional, do Programa de Pós-Graduação em Ensino de Física, da Universidade

  4. TÉCNICAS Y HERRAMIENTAS PARA LA GESTIÓN DE RIESGOS FINANCIEROS EN LA EMPRESA

    Microsoft Academic Search

    Antonio de la Torre Gallegos; Edith Bellini

    2009-01-01

    En el presente trabajo se analizan las técnicas existentes para la gestión de los riesgos financieros a los que se encuentran sometidas las empresas mediante la utilización de instrumentos financieros derivados y que ha dado origen a la denominada ingeniería financiera. Una vez analizados los diferentes instrumentos financieros derivados y el concepto de ingeniería financiera describiremos diferentes aplicaciones para la

  5. Servidor tem direito a licena para acompanha cnjuge aprovado em concurso em outro estado

    E-print Network

    Floeter, Sergio Ricardo

    Servidor tem direito a licença para acompanha cônjuge aprovado em concurso em outro estado O servidor público tem direito a licença para acompanhamento do cônjuge se este for aprovado em concurso Federal da 4ª Região (TRF4), o tribunal concedeu apenas o direito a licença não-remunerada, mas não

  6. Direito de migrar para plano individual ou familiar aproveitando carncia do plano coletivo empresarial.

    E-print Network

    Floeter, Sergio Ricardo

    Direito de migrar para plano individual ou familiar aproveitando carência do plano coletivo extinto terão o direito de se vincular a um plano da mesma operadora, com contração individual ou familiar planos de autogestões. A condição para exercer esse direito é que a operadora comercialize plano

  7. Tipología de instituciones financieras para la microempresa en América Latina y el Caribe

    Microsoft Academic Search

    Miguel Taborga; Fernando Lucano

    1998-01-01

    Este ensayo se presenta dada la gran variedad de actores que intervienen en la promoción de las microfinanzas. Esta herramienta ha sido diseñada para orientar a una amplia gama de instituciones y profesionales interesados en comprender las características de las instituciones que financian la microempresa. En lo particular, la presente tipología ha sido concebida para responder a las necesidades de

  8. Universidad Autnoma de Madrid Oficina de Prcticas Externas y Orientacin para el Empleo

    E-print Network

    Pazos, Florencio

    Universidad Autónoma de Madrid UAM Oficina de Prácticas Externas y Orientación para el Empleo Edificio Plaza Mayor, 1.ª Planta. C/ Einstein, 3 Universidad Autónoma de Madrid 28049 Madrid (España;Universidad Autónoma de Madrid UAM Oficina de Prácticas Externas y Orientación para el Empleo Edificio Plaza

  9. Política Fiscal Local e o Seu Papel Crescimento Econômico - Uma Evidência Empírica para o Brasil

    Microsoft Academic Search

    Cristiano Aguiar de Oliveira; Liderau dos Santos Marques Junior; Paulo de Andrade Jacinto

    2009-01-01

    Este artigo estuda o papel da política fiscal local no crescimento econômico de cidades. Para este fim, o artigo apresenta um modelo espacial de crescimento econômico com governo, que incorpora as contribuições das teorias do crescimento endógeno e da nova geografia econômica. O modelo _e avaliado empiricamente através de uma aplicação para as cidades brasileiras na década de noventa. Os

  10. Geochemical study of graywackes as a possible starting material of para-amphibolites

    Microsoft Academic Search

    Giorgio Rivalenti; Gian Paolo Sighinolfi

    1969-01-01

    The possibility of para-amphibolites originating from the metamorphic transformation of graywackes is investigated. A series of 35 samples of Vosges graywackes has been studied and the geochemical trends for major and trace elements have been determined to this end. The strong similarity of the geochemical characteristics of this group of graywackes to those of a series of para-amphibolites of the

  11. ESPACIOS PARA EL CONSUMO DE COMIDA PROPIA. NORMAS BSICAS DE USO.

    E-print Network

    Escolano, Francisco

    ESPACIOS PARA EL CONSUMO DE COMIDA PROPIA. NORMAS BÁSICAS DE USO. NORMAS GENERALES: 1. A los efectos de establecer unas normas básicas de uso de estos espacios, cada Club Social reservará, delimitará y señalizará adecuadamente un espacio para ser utilizado por los usuarios que traigan la comida o

  12. Instrucciones para el uso del paquete ``Astrometr'ia de Asteroides''

    E-print Network

    Rodriguez, Luis F.

    manual de uso detallado en ingl'es. Ac'a damos las instrucciones m'inimas para el paquete instalado en... Con 'esto aparece la pantalla de CLEA 2. En la pantalla de CLEA se da File... Login . Se ponen los la pr'actica ``Astrometr'ia de Asteroides'' 3. Para cargar una imagen se da File... Load... Image1

  13. Informalidad del mercado de crédito para la vivienda de interés social

    Microsoft Academic Search

    Ricardo Rocha; Fabio Sánchez Torres; Jorge Tovar

    2007-01-01

    Se trata de un documento dedicado a revelar los principales rasgos del mercado de crédito para Vivienda de Interés Social, VIS, para la población pobre en Colombia y a analizar los resultados de la política durante lo corrido del presente milenio. La primera mitad del estudio estudia la oferta VIS sobre los resultados de 70 encuestas aplicadas a oferentes de

  14. ELEMENTOS PARA ORIENTAR UNA POLÍTICA ESTATAL SOBRE ALQUILER DE VIVIENDA URBANA EN COLOMBIA

    Microsoft Academic Search

    Samuel Jaramillo; Marcela Ibáñez

    2002-01-01

    El objetivo de este documento es el de contribuir a diseñar cursos de acción gubernamental en dos ejes: el de promover y activar el mercado de vivienda en alquiler en general y el de buscar criterios para diseñar instrumentos que permitan utilizar el alquiler en las acciones estatales de vivienda social. Uno de los graves obstáculos que existen actualmente para

  15. Accesibilidad para personas con debilidad motriz ASIC 18 de noviembre de 2010 Pg. 1 de 17

    E-print Network

    Fernández de Córdoba, Pedro

    Accesibilidad para personas con debilidad motriz Windows 7 ASIC ­ 18 de noviembre de 2010 Pág. 1 de;Accesibilidad para personas con debilidad motriz Windows 7 ASIC ­ 18 de noviembre de 2010 Pág. 2 de 17 Windows 7 ASIC ­ 18 de noviembre de 2010 Pág. 3 de 17 Figura 1-Centro de accesibilidad -Figura 2-Teclado

  16. Accesibilidad para personas con debilidad auditiva ASIC 18 de noviembre de 2010 Pg. 1 de 8

    E-print Network

    Fernández de Córdoba, Pedro

    Accesibilidad para personas con debilidad auditiva Windows 7 ASIC ­ 18 de noviembre de 2010 Pág. 1 sonidos. #12;Accesibilidad para personas con debilidad auditiva Windows 7 ASIC ­ 18 de noviembre de 2010 con debilidad auditiva Windows 7 ASIC ­ 18 de noviembre de 2010 Pág. 3 de 8 -Figura 1-Centro de

  17. Accesibilidad para personas con debilidad auditiva ASIC 18 de noviembre de 2010 Pg. 1 de 4

    E-print Network

    Fernández de Córdoba, Pedro

    Accesibilidad para personas con debilidad auditiva Windows XP ASIC ­ 18 de noviembre de 2010 Pág. 1 debilidad auditiva Windows XP ASIC ­ 18 de noviembre de 2010 Pág. 2 de 4 Utilizando el ratón 3 En el cuadro). Utilizando el ratón #12;Accesibilidad para personas con debilidad auditiva Windows XP ASIC ­ 18 de noviembre

  18. Accesibilidad para personas con debilidad visual ASIC 18 de noviembre de 2010 Pg. 1 de 12

    E-print Network

    Fernández de Córdoba, Pedro

    Accesibilidad para personas con debilidad visual Windows 7 ASIC ­ 18 de noviembre de 2010 Pág. 1 de accesibilidad haga Intro sobre la Lupa : #12;Accesibilidad para personas con debilidad visual Windows 7 ASIC Windows 7 ASIC ­ 18 de noviembre de 2010 Pág. 3 de 12 Ctrl+Alt+R Tecla del logotipo de Windows +Esc

  19. Para-nitrobenzyl esterases with enhanced activity in aqueous and nonaqueous media

    DOEpatents

    Arnold, F.H.; Moore, J.C.

    1999-05-25

    A method is disclosed for isolating and identifying modified para-nitrobenzyl esterases which exhibit improved stability and/or esterase hydrolysis activity toward selected substrates and under selected reaction conditions relative to the unmodified para-nitrobenzyl esterase. The method involves preparing a library of modified para-nitrobenzyl esterase nucleic acid segments (genes) which have nucleotide sequences that differ from the nucleic acid segment which encodes for unmodified para-nitrobenzyl esterase. The library of modified para-nitrobenzyl nucleic acid segments is expressed to provide a plurality of modified enzymes. The clones expressing modified enzymes are then screened to identify which enzymes have improved esterase activity by measuring the ability of the enzymes to hydrolyze the selected substrate under the selected reaction conditions. Specific modified para-nitrobenzyl esterases are disclosed which have improved stability and/or ester hydrolysis activity in aqueous or aqueous-organic media relative to the stability and/or ester hydrolysis activity of unmodified naturally occurring para-nitrobenzyl esterase. 43 figs.

  20. Para-nitrobenzyl esterases with enhanced activity in aqueous and nonaqueous media

    DOEpatents

    Arnold, Frances H. (Pasadena, CA); Moore, Jeffrey C. (Pasadena, CA)

    1998-01-01

    A method for isolating and identifying modified para-nitrobenzyl esterases which exhibit improved stability and/or esterase hydrolysis activity toward selected substrates and under selected reaction conditions relative to the unmodified para-nitrobenzyl esterase. The method involves preparing a library of modified para-nitrobenzyl esterase nucleic acid segments (genes) which have nucleotide sequences that differ from the nucleic acid segment which encodes for unmodified para-nitrobenzyl esterase. The library of modified para-nitrobenzyl nucleic acid segments is expressed to provide a plurality of modified enzymes. The clones expressing modified enzymes are then screened to identify which enzymes have improved esterase activity by measuring the ability of the enzymes to hydrolyze the selected substrate under the selected reaction conditions. Specific modified para-nitrobenzyl esterases are disclosed which have improved stability and/or ester hydrolysis activity in aqueous or aqueous-organic media relative to the stability and/or ester hydrolysis activity of unmodified naturally occurring para-nitrobenzyl esterase.

  1. Para-nitrobenzyl esterases with enhanced activity in aqueous and nonaqueous media

    DOEpatents

    Arnold, Frances H. (Pasadena, CA); Moore, Jeffrey C. (Pasadena, CA)

    1999-01-01

    A method for isolating and identifying modified para-nitrobenzyl esterases which exhibit improved stability and/or esterase hydrolysis activity toward selected substrates and under selected reaction conditions relative to the unmodified para-nitrobenzyl esterase. The method involves preparing a library of modified para-nitrobenzyl esterase nucleic acid segments (genes) which have nucleotide sequences that differ from the nucleic acid segment which encodes for unmodified para-nitrobenzyl esterase. The library of modified para-nitrobenzyl nucleic acid segments is expressed to provide a plurality of modified enzymes. The clones expressing modified enzymes are then screened to identify which enzymes have improved esterase activity by measuring the ability of the enzymes to hydrolyze the selected substrate under the selected reaction conditions. Specific modified para-nitrobenzyl esterases are disclosed which have improved stability and/or ester hydrolysis activity in aqueous or aqueous-organic media relative to the stability and/or ester hydrolysis activity of unmodified naturally occurring para-nitrobenzyl esterase.

  2. Para-nitrobenzyl esterases with enhanced activity in aqueous and nonaqueous media

    DOEpatents

    Arnold, F.H.; Moore, J.C.

    1998-04-21

    A method is disclosed for isolating and identifying modified para-nitrobenzyl esterases. These enzymes exhibit improved stability and/or esterase hydrolysis activity toward selected substrates and under selected reaction conditions relative to the unmodified para-nitrobenzyl esterase. The method involves preparing a library of modified para-nitrobenzyl esterase nucleic acid segments (genes) which have nucleotide sequences that differ from the nucleic acid segment which encodes for unmodified para-nitrobenzyl esterase. The library of modified para-nitrobenzyl nucleic acid segments is expressed to provide a plurality of modified enzymes. The clones expressing modified enzymes are then screened to identify which enzymes have improved esterase activity by measuring the ability of the enzymes to hydrolyze the selected substrate under the selected reaction conditions. Specific modified para-nitrobenzyl esterases are disclosed which have improved stability and/or ester hydrolysis activity in aqueous or aqueous-organic media relative to the stability and/or ester hydrolysis activity of unmodified naturally occurring para-nitrobenzyl esterase. 43 figs.

  3. A mathematical model of ParA filament-mediated chromosome movement in Caulobacter crescentus.

    PubMed

    Shtylla, Blerta; Keener, James P

    2012-08-21

    Caulobacter crescentus uses the dynamic interactions between ParA and ParB proteins to segregate copies of its circular chromosome. In this paper, we develop two mathematical models of the movement of the circular chromosome of this bacterium during division. In the first model, posed as a set of stochastic differential equations (SDE), we propose that a simple biased diffusion mechanism for ParB/ParA interactions can reproduce the observed patterns of ParB and ParA localization in the cell. The second model, posed as a set of nonlinear partial differential equations, is a continuous treatment of the problem where we use results from the SDE model to describe ParB/ParA interactions and we also track ParA monomer dynamics in the cytoplasm. For both models, we show that if ParB complexes bind weakly and nonspecifically to ParA filaments, then they can closely track and move with the edge of a shrinking ParA filament bundle. Unidirectional chromosome movement occurs when ParB complexes have a passive role in depolymerizing ParA filaments. Finally, we show that tight control of ParA filament dynamics is essential for proper segregation. PMID:22588023

  4. Quantum fluctuations increase the self-diffusive motion of para-hydrogen in narrow carbon nanotubes.

    PubMed

    Kowalczyk, Piotr; Gauden, Piotr A; Terzyk, Artur P; Furmaniak, Sylwester

    2011-05-28

    Quantum fluctuations significantly increase the self-diffusive motion of para-hydrogen adsorbed in narrow carbon nanotubes at 30 K comparing to its classical counterpart. Rigorous Feynman's path integral calculations reveal that self-diffusive motion of para-hydrogen in a narrow (6,6) carbon nanotube at 30 K and pore densities below ?29 mmol cm(-3) is one order of magnitude faster than the classical counterpart. We find that the zero-point energy and tunneling significantly smoothed out the free energy landscape of para-hydrogen molecules adsorbed in a narrow (6,6) carbon nanotube. This promotes a delocalization of the confined para-hydrogen at 30 K (i.e., population of unclassical paths due to quantum effects). Contrary the self-diffusive motion of classical para-hydrogen molecules in a narrow (6,6) carbon nanotube at 30 K is very slow. This is because classical para-hydrogen molecules undergo highly correlated movement when their collision diameter approached the carbon nanotube size (i.e., anomalous diffusion in quasi-one dimensional pores). On the basis of current results we predict that narrow single-walled carbon nanotubes are promising nanoporous molecular sieves being able to separate para-hydrogen molecules from mixtures of classical particles at cryogenic temperatures. PMID:21503294

  5. Um enfoque antropológico para o ensino de astronomia no nível médio

    NASA Astrophysics Data System (ADS)

    Costa, G. B.; Jafelice, L. C.

    2003-08-01

    Há uma enorme carência de materiais didático-pedagógicos em astronomia para professores do ensino médio, sobretudo materiais que explorem também aspectos humanísticos. A origem do Universo é um bom exemplo desta constatação central. Embora tal origem teve explicações culturais diversas, os professores não têm informações sobre isso e muito menos material que trabalhe diferentes visões de mundo e treinamento que os capacite a abordá-las devidamente. Conseqüentemente o ensino de astronomia costuma ser tecnicista e dissociado do aspecto humano que alimenta o grande interesse e curiosidade que esses temas despertam. Aqui apresentamos propostas visando contribuir para reverter esse quadro e trabalhamos distintas visões de Universo: espontâneas, autóctones e científicas. Desenvolvemos práticas, materiais instrucionais e textos para viabilizar a adoção de um enfoque antropológico para o ensino de astronomia no nível médio, no qual as culturas humanística e científica sejam integradas de uma maneira contextualizada e eficaz para aquele ensino. Estas propostas foram aplicadas em um curso de treinamento para professores da rede pública de diferentes disciplinas. A receptividade dos professores à abordagem proposta e os resultados alcançados foram muito estimulantes. Destes, destacamos: produção de roteiros de atividades; desenvolvimento de práticas didático-pedagógicas específicas (e.g., encenação de mitos; dança primordial guarani; "criação" de constelações e interpretações pluriculturais; etc.); e sugestões concretas para a efetiva realização de um ensino interdisciplinar contextualizado, onde questões cosmogônicas servem de mote para iniciar tal ensino. Discutimos estes resultados e como o enfoque adotado pode instrumentalizar os professores para leituras de mundo que incluem naturalmente aspectos culturais, sociais e históricos associados aos temas estudados. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temáticos/FAPESP)

  6. All the three ParaHox genes are present in Nuttallochiton mirandus (Mollusca: polyplacophora): evolutionary considerations.

    PubMed

    Barucca, Marco; Biscotti, Maria A; Olmo, Ettore; Canapa, Adriana

    2006-03-15

    The ParaHox gene cluster contains three homeobox genes, Gsx, Xlox and Cdx and has been demonstrated to be an evolutionary sister of the Hox gene cluster. Among deuterostomes the three genes are found in the majority of taxa, whereas among protostomes they have so far been isolated only in the phylum Sipuncula. We report the partial sequences of all three ParaHox genes in the polyplacophoran Nuttallochiton mirandus, the first species of the phylum Mollusca where all ParaHox genes have been isolated. This finding has phylogenetic implications for the phylum Mollusca and for its relationships with the other lophotrochozoan taxa. PMID:16331637

  7. Descripción de la zona de alta difusión en un modelo bidimensional para hojas de corriente

    NASA Astrophysics Data System (ADS)

    Montero, M. F.; Paola, C. A.; Platzeck, A. M.

    Los modelos bidimensionales para describir hojas de corriente de alta simetría no suministran una descripción detallada de las regiones donde la difusión es considerablemente importante. Tal es el caso de los modelos desarrollados en la década del '60 por Sweet, Parker, Petschek y Sonnerup. En esta comunicación presentamos una solución de las ecuaciones MHD en el entorno del origen, construyendo series bidimensionales para todas las magnitudes físicas involucradas. Valiéndonos de la alta simetría y de las características del problema, logramos reducir el número de coeficientes a calcular. Utilizamos un programa autoconsistente para extender el cálculo a regiones vecinas con difusión moderada o despreciable.

  8. Pentacene transistor encapsulated by poly-para-xylylene behaving as gate dielectric insulator and passivation film

    NASA Astrophysics Data System (ADS)

    Tsukagoshi, Kazuhito; Yagi, Iwao; Shigeto, Kunji; Yanagisawa, Keiichi; Tanabe, Jun; Aoyagi, Yoshinobu

    2005-10-01

    We present pentacene thin-film transistors with poly-para-xylylene gate dielectric and passivation films for plastic electronics. Both the poly-para-xylylene films are formed by dry chemical vapor deposition at room temperature. An organic pentacene channel is fully encapsulated by poly-para-xylylene films, except in the area of electrode connection. Passivation induces little degradation of the organic transistor properties. In addition, a small amount of charge transfer molecules are introduced between the pentacene channel and the metal electrodes to improve device performance. Contact resistance is sufficiently reduced by the employment of the charge transfer molecules, which is analyzed using a transmission-line model.

  9. Qu es un sitio Web personal? Un espacio personalizado creado para los miembros de la comunidad universitaria donde

    E-print Network

    Islas, León

    ¿Qué es un sitio Web personal? Un espacio personalizado creado para los miembros de la comunidad://www.paginaspersonales.unam.mx. · Podrás participar en diferentes espacios de opinión y discusión exclusivos para miembros de la comunidad

  10. MÉTODO SIMPLE PARA LA DETECCIÓN MÚLTIPLE DE VIROIDES DE CÍTRICOS A SIMPLE METHOD FOR THE MULTIPLE DETECTION OF CITRUS VIROIDS

    Microsoft Academic Search

    Isidro H. Almeyda-León; Mario A. Rocha-Peña; M. Magdalena Iracheta-Cárdenas; Fermín Orona-Castro; Craig J. Kahlke

    La detección de viroides mediante RT-PCR en México es de uso común en los laboratorios de acreditación para determinar la calidad sanitaria de plantas de cítricos, cuando se van a utilizar árboles madre para propagar plantas de vivero. En el presente trabajo se describe una metodología simple para la detección múltiple de los viroides Citrus exocortis viroid (CEVd), CVd II,

  11. Adequação da metodologia do teste de deterioração controlada para sementes de brócolis (Brassica oleracea L. - var. itálica)

    Microsoft Academic Search

    Elisabeth Aparecida Furtado de Mendonça; Nilza Patrícia Ramos; Simone Aparecida Fessel

    2003-01-01

    2 RESUMO - A eficiência dos testes de vigor na avaliação da qualidade de sementes, depende da sua padronização para as diferentes espécies. Neste contexto, os objetivos deste trabalho foram elaborar as curvas de absorção de água para determinar o período necessário ao ajuste do teor de água das sementes e aprimorar o teste de deterioração controlada para sementes de

  12. MERCADO DISCAPACITADOS, POTENCIALIDADES PARA CUBA Y EVALUACIÓN DE SU FACTIBILIDAD COMO HERRAMIENTA DE LA DIRECCIÓN INTEGRADA DE PROYECTOS

    Microsoft Academic Search

    Yaremis Pérez Corbea; Farid Rafa Elías; Danaisy Peña Edmond; Yamila Cohen Brito; Maydeline Quintana Rodríguez

    2011-01-01

    Desde los problemas para entrar en una agencia de viajes en una silla de ruedas, para encontrar portales de Internet turísticos que estén adaptados para invidentes, hasta poder embarcar en un avión, subirse a un taxi, entrar en un museo, llegar hasta la orilla del mar o poder disfrutar de una exposición de arte, los discapacitados y personas con movilidad

  13. Neoplasias de células plasmáticas (incluso mieloma múltiple)–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento del mieloma múltiple y otras neoplasias de células plasmáticas, así como referencias a estudios clínicos, investigación, estadísticas y otros temas relacionados.

  14. Cáncer de ovario, de trompa de Falopio y primario de peritoneo–para profesionales de salud

    Cancer.gov

    Información del Instituto Nacional del Cáncer para profesionales de salud sobre el tratamiento, la prevención, la genética, las causas y los exámenes de detección del cáncer de ovario, así como referencias a estudios clínicos, investigación, estadísticas y otros temas relacionados.

  15. EDITAL N 01 CONSULTA PARA OS CARGOS DE DIRETOR (A) E VICE-DIRETOR

    E-print Network

    Paraná, Universidade Federal do

    17h para os discentes do Curso de Pedagogia do Setor de Educação, modalidade EaD, nos polos da técnicos-administrativos, discentes do Curso de Pedagogia e dos Cursos de Pós-Graduação presenciais. 3 Os

  16. revised January 2009 Formulario de Inscripcin para Voluntario de 4-H

    E-print Network

    Tullos, Desiree

    ,000 Sexo: ( ) Nativo Hawaiano o Islas del Pacifico ( ) Suburbio mas de 50,000 ( ) Masculino ( ) Blanco o para todos sin tener en cuenta raza, color, religión, sexo, orientación sexual, nacionalidad, edad

  17. Para muchos jóvenes supervivientes de cáncer, los efectos tardíos representan problemas duraderos

    Cancer.gov

    Muchos adolescentes y adultos jóvenes supervivientes de cáncer no saben o subestiman el alto riesgo que tienen de sufrir efectos tardíos en su salud. Hay esfuerzos en marcha para aumentar la concientización y la vigilancia de estos efectos tardíos.

  18. Agenda de dos das de capacitacin (Para uso del representante) Antes del curso Inscripcin

    E-print Network

    curso Inscripción Verificación de la identidad (Licencia de manejar) Formularios de inscripción del: Actividad para romper el hielo Prueba antes del curso 45 minutos Sepa la realidad sobre la enfermedad de

  19. Genomic organisation of the seven ParaHox genes of coelacanths

    PubMed Central

    Mulley, John F; Holland, Peter WH

    2014-01-01

    Human and mouse genomes contain six ParaHox genes implicated in gut and neural patterning. In coelacanths and cartilaginous fish, an additional ParaHox gene exists—Pdx2—that dates back to the genome duplications in early vertebrate evolution. Here we examine the genomic arrangement and flanking genes of all ParaHox genes in coelacanths, to determine the full complement of these genes. We find that coelacanths have seven ParaHox genes in total, in four chromosomal locations, revealing that five gene losses occurred soon after vertebrate genome duplication. Comparison of intergenic sequences reveals that some Pdx1 regulatory regions associated with development of pancreatic islets are older than tetrapods, that Pdx1 and Pdx2 share few if any conserved non-coding elements, and that there is very high sequence conservation between coelacanth species. PMID:23775937

  20. Jornada especial Para que um trabalhador tenha direito jornada de seis horas do sistema de

    E-print Network

    Floeter, Sergio Ricardo

    Jornada especial Para que um trabalhador tenha direito à jornada de seis horas do sistema de turnos condições. A SDI-1 reformou decisão da Terceira Turma do TST, que havia reconhecido o direito à jornada de

  1. CoHemis colabora con nuevo proyecto de NSF para la adaptacin sustentable de ambientes costeros

    E-print Network

    Gilbes, Fernando

    estudios de casos que mostraron la importancia de esta iniciativa. En la tarde del primer día los, definitivamente es un caso único para estudiar. En el Caribe no hemos tenido las mismas oportunidades", expresó el

  2. Communications: Development and characterization of a source of rotationally cold, enriched para-H3+

    NASA Astrophysics Data System (ADS)

    Tom, Brian A.; Mills, Andrew A.; Wiczer, Michael B.; Crabtree, Kyle N.; McCall, Benjamin J.

    2010-02-01

    In an effort to develop a source of H3+ that is almost entirely in a single quantum state (J =K=1), we have successfully generated a plasma that is enriched to ˜83% in para-H3+ at a rotational temperature of 80 K. This enrichment is a result of the nuclear spin selection rules at work in hydrogenic plasmas, which dictate that only para-H3+ will form from para-H2, and that para-H3+ can be converted to ortho-H3+ by subsequent reaction with H2. This is the first experimental study in which the H2 and H3+ nuclear spin selection rules have been observed at cold temperatures. The ions were produced from a pulsed solenoid valve source, cooled by supersonic expansion, and interrogated via continuous-wave cavity ringdown spectroscopy.

  3. ParaSol: a multithreaded system for parallel simulation based on mobile threads

    Microsoft Academic Search

    Edward Mascarenhas; Felipe Knop; Vernon Rego

    1995-01-01

    ParaSol is a novel multithreaded system for shared-and distributed-memory parallel simulation, designed to support a variety of domain-specific simulation object libraries. We report on the design of the ParaSol kernel, which drives executions based on optimistic and adaptive synchronization protocols. The active-transaction flow methodology we advocate is enabled by an underlying, efficient lightweight process system. Though this process- and object-interaction

  4. pH-dependent nitration of para-hydroxyphenylacetic acid in the stomach.

    PubMed

    Pannala, Ananth S; Mani, Ali R; Rice-Evans, Catherine A; Moore, Kevin P

    2006-09-15

    The major urinary metabolite of nitrotyrosine is 3-nitro-4-hydroxyphenylacetic acid (3-Nitro-HPA). However, recent animal studies have shown that the majority of urinary 3-Nitro-HPA is derived from nitration of endogenous para-hydroxyphenylacetic acid (HPA), a metabolite of tyrosine. One potential site for the formation of 3-Nitro-HPA is the stomach, where nitrous acid is formed by the reaction of nitrite in saliva with gastric acid. The aim of this study was to determine whether there is pH-dependent nitration of salivary para-hydroxyphenylacetic acid or tyrosine, and the effects of dietary nitrate. Healthy volunteers (n = 18) ingested either a low or high nitrate diet, with and without the administration of omeprazole, a proton pump inhibitor. Urinary 3-Nitro-HPA excretion increased from 197 +/- 52 to 319 +/- 88 microg/day on switching from a low to a high nitrate diet (P < 0.05), and decreased (166 +/- 53 mug/day, P < 0.05) when gastric pH was increased by omeprazole. To determine whether 3-Nitro-HPA can be formed by nitration of para-hydroxyphenylacetic acid in the stomach, 500 microg of deuterated para-hydroxyphenylacetic acid was ingested with a high nitrate meal. This led to the excretion of both deuterated HPA and 3-Nitro-HPA in the urine, confirming that para-hydroxyphenylacetic acid is absorbed, and nitrated. Since omeprazole decreases the formation of 3-Nitro-HPA, presumably by decreasing the nitration of endogenous para-hydroxyphenylacetic acid present in saliva, and the observation that ingested deuterated para-hydroxyphenylacetic acid is nitrated and excreted, we conclude that endogenous para-hydroxyphenylacetic acid is nitrated in the stomach, absorbed, and excreted as 3-Nitro-HPA. PMID:16934672

  5. The ParaPhrase Project: Parallel Patterns for Adaptive Heterogeneous Multicore Systems

    Microsoft Academic Search

    Kevin Hammond; Marco Aldinucci; Chris Brown; Francesco Cesarini; Marco Danelutto; Horacio Gonz'alez-V'elez; Peter Kilpatrick; Rainer Keller; Michael Rossbory; Gilad Shainer

    2013-01-01

    This paper describes the ParaPhrase project, a new 3-year targeted research project funded under EU Framework 7 Objective 3.4 (Computer Systems), starting in October 2011. ParaPhrase aims to follow a new approach to introducing parallelism using advanced refactoring techniques coupled with high-level parallel design patterns. The refactoring approach will use these design patterns to restructure pro- grams defined as networks

  6. ParaLearn: a massively parallel, scalable system for learning interaction networks on FPGAs

    Microsoft Academic Search

    Narges Bani Asadi; Christopher W. Fletcher; Greg Gibeling; John Wawrzynek; Wing H. Wong; Garry P. Nolan; Zoey Zhou

    2010-01-01

    ParaLearn is a scalable, parallel FPGA-based system for learning interaction networks using Bayesian statistics. ParaLearn includes problem specific parallel\\/scalable algorithms, system software and hardware architecture to address this complex problem. Learning interaction networks from data uncovers causal relationships and allows scientists to predict and explain a system's behavior. Interaction networks have applications in many fields, though we will discuss them

  7. Curing of some epoxy-acrylate glycidyl ethers based on para-alkyl substituted phenols

    Microsoft Academic Search

    C. N. Ca?caval; D. Ro?u; A. Stoleriu

    1997-01-01

    Curing of epoxy-acrylate glycidyl ethers based on phenol and para-alkyl [?CH3, ?C(CH3)3, ?C9H19] substituted phenols in the presence of benzoyl peroxide was examined by differential scanning calorimetry at different heating rates. The tested monomers polymerize first as acrylic monomers and the reaction continues by the curing process only in the case of the epoxy-acrylate glycidyl ethers of para-alkyl substituted phenols,

  8. Col^onia de Formigas: Uma Abordagem Para Resoluc~ao De Problemas De Layout

    E-print Network

    Gomes, Francisco A. M.

    Col^onia de Formigas: Uma Abordagem Para Resolu¸c~ao De Problemas De Layout Daniele Costa Silva formigas e propomos seu uso para resolu¸c~ao de problemas de layout. Palavras-Chaves. Col^onia de Formigas. Problemas de Layout. M´etodos Heur´isticos. 1 Introdu¸c~ao O problema de layout ´e um problema antigo e ap

  9. REPERTORIO DIDÁCTICO ESPAÑOL EN EL MARCO DE LA ENSEÑANZA PARA CUERDA EN EL CONSERVATORIO DE MADRID EN EL SIGLO XIX: OBRAS PARA VIOLÍN, VIOLONCELLO Y VIOLA

    Microsoft Academic Search

    Mónica García Velasco

    2005-01-01

    El análisis del conjunto de aportaciones al repertorio didáctico para violín, viola y violoncello, realizadas por autores vinculados al Conservatorio de Madrid durante el siglo XIX, pone de manifiesto la conexión de la enseñanza de cuerda con modelos europeos, al tiempo que representa un capítulo imprescindible dentro del estudio de la música instrumental española en esa centuria. El Método Elemental

  10. Planificar la transición para la atención del cáncer avanzado en la etapa final de la vida–para profesionales de salud (PDQ®)

    Cancer.gov

    Resumen de información revisada por expertos sobre la preparación necesaria por parte de los proveedores de atención de la salud, los pacientes y sus familas para la transición a la atención del cáncer avanzado en la etapa final de la vida.

  11. Centro de Informacin Para la Evaluacin de Terrenos en Puerto Rico El Centro de Informacin para la Evaluacin de Terrenos de Puerto Rico (CIET-PR) es

    E-print Network

    Gilbes, Fernando

    a todos los sectores de la sociedad. Ésta información ayudará a validar la toma de decisiones, dentro del información valida la toma de decisiones por medio del uso crítico de la data. Para obtener información con el fin de tomar decisiones inteligentes, dentro del marco de referencia que este Centro de

  12. Cambio climático en América Latina y el Caribe: Riesgos para el sector de las microfinanzas y oportunidades para la adaptación: 2011

    Microsoft Academic Search

    María Elena Gutierrez; Xavier Mommens

    2011-01-01

    Este estudio tiene como finalidad mostrar cómo los servicios de las microfinanzas pueden sufrir los impactos del cambio climático, analizar las oportunidades que se presentan para las instituciones microfinancieras y proponer acciones concretas. El presente trabajo se desarrolló por encargo del Banco Interamericano de Desarrollo (BID) en coordinación con la Unidad de Energía Sostenible y Cambio Climático (ECC) y el

  13. Las Hidroeléctricas deben contribuir para un desarrollo territorial sostenible! Una revisión de perspectivas, contradicciones y opciones urgentes para territorios rurales en Guatemala

    Microsoft Academic Search

    Dagny Skarwan

    2011-01-01

    Las hidroeléctricas se convierten en una potencial alternativa energética frente a los combustibles fósiles. Abundan las contradicciones en distintos planos que se generan a partir de un sistema excluyente y visiones centralistas del sector energético en Guatemala. Enfocarlas será una precondición para proponer cambios a favor del desarrollo de los territorios donde se generan los recursos hídricos del país, pero

  14. Gestión de riesgo de desastres naturales: Sistemas nacionales para la gestión integral del riesgo de desastres: Estrategias financieras para la reconstrucción en caso de desastres naturales

    Microsoft Academic Search

    Paul Freeman; Leslie A. Martin; Joanne Linnerooth-Bayer; Koko Warner; Georg Pflug

    2003-01-01

    El presente trabajo expone el estudio que encargó el Diálogo Regional de Políticas sobre Desastres Naturales. El estudio está centrado en la comprensión de sistemas nacionales e integrados de gestión del riesgo de desastres y en el financiamiento correspondiente. Mientras que la primera fase analiza los componentes de un sistema nacional, la segunda se centra en los instrumentos para financiar

  15. LIBRO ELECTRÓNICO MULTIMEDIA PARA EL DESARROLLO DE HABILIDADES EN EL MANEJO DE LOS SISTEMAS CONTABLES A TRAVÉS DE LA ASIGNATURA SISTEMAS AUTOMATIZADOS PARA EL CONTADOR

    Microsoft Academic Search

    Omar Gómez Delgado; Lisbel Valera Fernández

    2009-01-01

    Las nuevas generaciones se ven inmersas en un contexto mediático y tecnológico más competitivo que demanda de forma inmediata nuevas habilidades y conocimientos del uso de las TICs y se supone que las personas deberían adquirir a través del proceso educativo un caudal de conocimientos y de competencias que las habiliten para continuar formándose a lo largo de la vida

  16. ESTUDIO PARA DETERMINAR LA FACTIBILIDAD DEL REEMPLAZO DEL ERP MICROSIP POR EL ERP SAP BUSINESS ONE PARA RESOLVER LAS NECESIDADES DE INFORMACIÓN FINANCIERA DE GRUPO URSUA

    Microsoft Academic Search

    Jorge Ricardo Vásquez Sánchez

    2009-01-01

    Hoy en día el manejo de la información, dentro de una organización, constituye una parte crucial para el desarrollo de las distintas actividades empresariales, y representa la base, en la que se sustenta, una eficaz toma de decisiones gerenciales, que permiten conducir con éxito a las organizaciones en mercados altamente competitivos.

  17. para-C-H Borylation of Benzene Derivatives by a Bulky Iridium Catalyst.

    PubMed

    Saito, Yutaro; Segawa, Yasutomo; Itami, Kenichiro

    2015-04-22

    A highly para-selective aromatic C-H borylation has been accomplished. By a new iridium catalyst bearing a bulky diphosphine ligand, Xyl-MeO-BIPHEP, the C-H borylation of monosubstituted benzenes can be affected with para-selectivity up to 91%. This catalytic system is quite different from the usual iridium catalysts that cannot distinguish meta- and para-C-H bonds of monosubstituted benzene derivatives, resulting in the preferred formation of meta-products. The para-selectivity increases with increasing bulkiness of the substituent on the arene, indicating that the regioselectivity of the present reaction is primarily controlled by steric repulsion between substrate and catalyst. Caramiphen, an anticholinergic drug used in the treatment of Parkinson's disease, was converted into five derivatives via our para-selective borylation. The present [Ir(cod)OH]2/Xyl-MeO-BIPHEP catalyst represents a unique, sterically controlled, para-selective, aromatic C-H borylation system that should find use in streamlined, predictable chemical synthesis and in the rapid discovery and optimization of pharmaceuticals and materials. PMID:25860511

  18. USO E ABUSO DE DROGAS PSICOTRÓPICAS NO BRASIL Use and abuse psychotrophics drugs in Brazil

    Microsoft Academic Search

    José Carlos Fernandes Galduróz; Aldous Huxley

    The author describes the studies performed by CEBRID on the drugs consumptiom in the country, commenting the main results, with emphasis in the surveys among students and the 1 st household survey in São Paulo's State.

  19. Competing ParA Structures Space Bacterial Plasmids Equally over the Nucleoid

    PubMed Central

    Gerdes, Kenn; Howard, Martin

    2014-01-01

    Low copy number plasmids in bacteria require segregation for stable inheritance through cell division. This is often achieved by a parABC locus, comprising an ATPase ParA, DNA-binding protein ParB and a parC region, encoding ParB-binding sites. These minimal components space plasmids equally over the nucleoid, yet the underlying mechanism is not understood. Here we investigate a model where ParA-ATP can dynamically associate to the nucleoid and is hydrolyzed by plasmid-associated ParB, thereby creating nucleoid-bound, self-organizing ParA concentration gradients. We show mathematically that differences between competing ParA concentrations on either side of a plasmid can specify regular plasmid positioning. Such positioning can be achieved regardless of the exact mechanism of plasmid movement, including plasmid diffusion with ParA-mediated immobilization or directed plasmid motion induced by ParB/parC-stimulated ParA structure disassembly. However, we find experimentally that parABC from Escherichia coli plasmid pB171 increases plasmid mobility, inconsistent with diffusion/immobilization. Instead our observations favor directed plasmid motion. Our model predicts less oscillatory ParA dynamics than previously believed, a prediction we verify experimentally. We also show that ParA localization and plasmid positioning depend on the underlying nucleoid morphology, indicating that the chromosomal architecture constrains ParA structure formation. Our directed motion model unifies previously contradictory models for plasmid segregation and provides a robust mechanistic basis for self-organized plasmid spacing that may be widely applicable. PMID:25521716

  20. Spontaneous Emission Between - and Para-Levels of Water-Ion H_2O^+

    NASA Astrophysics Data System (ADS)

    Tanaka, Keiichi; Harada, Kensuke; Nanbu, Shinkoh; Oka, Takeshi

    2012-06-01

    Nuclear spin conversion interaction of water ion, H_2O^+, has been studied to derive spontaneous emission lifetime between ortho- and para-levels. H_2O^+ is a radical ion with the ^2B_1 electronic ground state. Its off-diagonal electron spin-nuclear spin interaction term, Tab(S_a? I_b + S_b? I_a), connects para and ortho levels, because ? I = I_1 - I_2 has nonvanishing matrix elements between I = 0 and 1. The mixing by this term with Tab = 72 MHz predicted by ab initio theory in the MRD-CI/Bk level, is many orders of magnitude larger than for closed shell molecules because of the large magnetic interaction due to the un-paired electron. Using the molecular constants reported by Mürtz et al. by FIR-LMR, we searched for ortho and para coupling channels below 1000 cm-1 with accidental near degeneracy between para and ortho levels. For example, hyperfine components of the 42,2(ortho) and 33,0(para) levels mix by 1.2 × 10-3 due to their near degeneracy (? E = 0.417 cm-1), and give the ortho-para spontaneous emission lifetime of about 0.63 year. The most significant low lying 10,1(para) and 11,1(ortho) levels, on the contrary, mix only by 8.7 × 10-5 because of their large separation (? E = 16.267 cm-1) and give the spontaneous emission lifetime from 10,1(para) to 00,0(ortho) of about 100 year.These results qualitatively help to understand the observed high ortho- to para- H_2O^+ ratio of 4.8 ± 0.5 toward Sgr B2 but they are too slow to compete with the conversion by collision unless the number density of the region is very low (n ˜1 cm-3) or radiative temperature is very high (T_r > 100 K). M. Staikova, B. Engels, M. Peric, and S.D. Peyerimhoff, Mol. Phys. 80, 1485 (1993) P. Mürtz, L.R. Zink, K.M. Evenson, and J.M. Brown J. Chem. Phys. 109, 9744 (1998). LP. Schilke, et al., A&A 521, L11 (2010).

  1. Adsorption of ortho and para H2 on NaCl(001)

    NASA Astrophysics Data System (ADS)

    Briquez, S.; Picaud, S.; Girardet, C.; Hoang, P. N. M.; Heidberg, J.; Voßberg, A.

    1998-10-01

    Fourier transform infrared spectroscopy (FTIR) experiments together with interaction potential calculations are performed to interpret the adsorption-desorption properties of para and ortho H2 molecules physisorbed on the (001) faces of NaCl crystallites. Isotherms of the adsorption process show preferential adsorption of para-H2 from gaseous normal-H2 at surface temperature around 10 K. Isobars of the desorption process show preferential desorption of para-H2 from a mixed ortho-H2 and para-H2 adsorbate. A quantum description of the molecular motions corroborates preferential adsorption of p- and (M=±1) o-H2 on the cation sites, as proposed in previous classical studies. It is shown that the adsorption energy is smaller for the para than for the (M=±1) ortho species in agreement with experimental measurement of desorption energy, while (M=0) o-H2 is only slightly bound to the substrate. This indicates that the ionic surface can discriminate all the H2 species. The determination of the bar spectrum for a set of independently adsorbed H2 species can interpret most of the infrared signals assigned to adsorption on the terrace sites. More specially the experimental behavior, with temperature and coverage, of the frequencies and relative intensities of the pure vibrational peaks and of the translation-vibration combination bands is very well explained in terms of hindered external motions of the admolecule.

  2. Estimation of Carbon Storage in Para Rubber Plantation in Eastern Thailand

    NASA Astrophysics Data System (ADS)

    Charoenjit, K.; Zuddas, P.; Allemand, P.

    2012-12-01

    This study aims to estimate the carbon stock and sequestration in Para rubber plantation of East Thailand using the THAICHOTE (Thailand Earth Observation System data). For that purpose we identify the area of every stage class Para rubber plantation by the analysis of different image objects (i.e., rule base and multiple regression classifications) and we map the carbon stock and sequestration of each Para rubber class using biomass allometric regressions and carbon content equations. THAICHOTE data include Multispectral image (4 bands at 15x15 m spatial resolution), Panchromatic image (2x2 m spatial resolution) and Stereo image, data acquisition from December 2011-April 2012. The preliminary investigated area is located in Wangchun, (Eastern, Thailand) and covers about 20 Km2. Calibrating the class stage, by image analysis that integrated edge-based segmentation, reflectance, remote sensing indices, texture analysis and canopy height model (CHM), we found that best classification was obtained by multiple regression (accuracy of 80%) compared to rule base logical operation (accuracy 70%) suggesting that manual 3D stereo measurements or Light Detection And Ranging (LiDAR) both are able to construct the CHM. The results of this study indicate that for a total Para rubber biomass of 14,651 tons, the amount of stored carbon is of 7,326 tons. Mature stage of Para rubber plantations exhibits the highest capacity of sequestering with a global flux of 0.21 tons C/ Km2/year.

  3. Vesicular erythema multiforme-like reaction to para-phenylenediamine in a henna tattoo.

    PubMed

    Sidwell, Rachel U; Francis, Nick D; Basarab, Tamara; Morar, Nilesh

    2008-01-01

    Allergic contact dermatitis reaction to topical "black henna" tattoo is usually described secondary to the organic dye para-phenylenediamine, a derivative of analine. Allergic contact dermatitis reactions to para-phenylenediamine are well recognized and most commonly involve an eczematous reaction that may become generalized and an acute angio-edema. Only four previous instances have been reported of an erythema multiforme-like reaction to para-phenylenediamine and its derivatives, including only one mild reaction to a tattoo. A vesicular erythema multiforme-like reaction has not been reported. An erythema multiforme-like reaction to contact allergens is usually caused by potent allergens including plant quinolones in Compositae and sesquiterpene lactones in exotic woods, and it is also reported to topical drugs, epoxy resin, metals (particularly nickel), and various chemicals. A generalized vesicular erythema multiforme-like reaction is unusual, and rarely reported. We describe a 6-year-old boy who developed a localized, eczematous and severe generalized vesicular erythema multiforme-like contact allergy to para-phenylenediamine secondary to a henna tattoo. As henna tattoos are becoming increasingly popular, one should be aware of the possibility of such a reaction. This presentation also highlights the call to ban the use of para-phenylenediamine and its derivatives in dyes. PMID:18429780

  4. ParaPep: a web resource for experimentally validated antiparasitic peptide sequences and their structures

    PubMed Central

    Mehta, Divya; Anand, Priya; Kumar, Vineet; Joshi, Anshika; Mathur, Deepika; Singh, Sandeep; Tuknait, Abhishek; Chaudhary, Kumardeep; Gautam, Shailendra K.; Gautam, Ankur; Varshney, Grish C.; Raghava, Gajendra P.S.

    2014-01-01

    ParaPep is a repository of antiparasitic peptides, which provides comprehensive information related to experimentally validated antiparasitic peptide sequences and their structures. The data were collected and compiled from published research papers, patents and from various databases. The current release of ParaPep holds 863 entries among which 519 are unique peptides. In addition to peptides having natural amino acids, ParaPep also consists of peptides having d-amino acids and chemically modified residues. In ParaPep, most of the peptides have been evaluated for growth inhibition of various species of Plasmodium, Leishmania and Trypanosoma. We have provided comprehensive information about these peptides that include peptide sequence, chemical modifications, stereochemistry, antiparasitic activity, origin, nature of peptide, assay types, type of parasite, mode of action and hemolytic activity. Structures of peptides consisting of natural, as well as modified amino acids have been determined using state-of-the-art software, PEPstr. To facilitate users, various user-friendly web tools, for data fetching, analysis and browsing, have been integrated. We hope that ParaPep will be advantageous in designing therapeutic peptides against parasitic diseases. Database URL: http://crdd.osdd.net/raghava/parapep/ PMID:24923818

  5. On the Ortho:Para Ratio of H+ 3 in Diffuse Molecular Clouds

    NASA Astrophysics Data System (ADS)

    Crabtree, Kyle N.; Indriolo, Nick; Kreckel, Holger; Tom, Brian A.; McCall, Benjamin J.

    2011-03-01

    The excitation temperature T 01 derived from the relative intensities of the J = 0 (para) and J = 1 (ortho) rotational levels of H2 has been assumed to be an accurate measure of the kinetic temperature in interstellar environments. In diffuse molecular clouds, the average value of T 01 is ~70 K. However, the excitation temperature T(H+ 3) derived from the (J, K) = (1, 1) (para) and (1, 0) (ortho) rotational levels of H+ 3 has been observed to be ~30 K in the same types of environments. In this work, we present observations of H+ 3 in three additional diffuse cloud sight lines for which H2 measurements are available, showing that in four of five cases T 01 and T(H+ 3) are discrepant. We then examine the thermalization mechanisms for the ortho:para ratios of H+ 3 and H2, concluding that indeed T 01 is an accurate measure of the cloud kinetic temperature, while the ortho:para ratio of H+ 3 need not be thermal. By constructing a steady-state chemical model taking into account the nuclear spin dependence of reactions involving H+ 3, we show that the ortho:para ratio of H+ 3 in diffuse molecular clouds is likely governed by a competition between dissociative recombination with electrons and thermalization via reactive collisions with H2. Based in part on observations made with ESO Telescopes at the La Silla or Paranal Observatories under program ID 384.C-0618.

  6. Allergic contact dermatitis to para-phenylenediamine in a tattoo: a case report.

    PubMed

    Turan, Hakan; Okur, Mesut; Kaya, Ertugrul; Gun, Emrah; Aliagaoglu, Cihangir

    2013-06-01

    It is highly popular among children and young adults to have temporary henna tattoos on their bodies in different colors and figures. Henna is a greenish natural powder obtained from the flowers and dry leaves of Lawsonia alba plant and its allergenicity is very low. Henna is also used in combination with other coloring substances such as para-phenylenediamine in order to darken the color and create a permanent tattoo effect. Para-phenylenediamine is a substance with high allergenicity potential and may cause serious allergic reactions. Here, we aimed to draw attention to the potential harms of para-phenylenediamine containing temporary tattoos by presenting a child patient who developed allergic contact dermatitis after having a scorpion-shaped temporary tattoo on his forearm. PMID:22909181

  7. Irritant contact dermatitis from a black henna tattoo without sensitization to para-phenylendiamine.

    PubMed

    Kind, Fabiola; Hofmeier, Kathrin Scherer; Bircher, Andreas J

    2013-06-01

    Allergic contact dermatitis from nonpermanent black henna tattoos has been frequently reported, particularly in children. Contamination or adulteration of the dyes with para-phenylendiamine has been identified as major cause of active sensitization and elicitation of severe allergic contact dermatitis. Sequelae include permanent sensitization, hyper- or hypopigmentation, scarring, keloids, and hypertrichosis. We report a rare case of irritant dermatitis to an unknown ingredient in a black henna tattoo with consecutive hypopigmentation. Sensitization to para-phenylendiamine and other para-compounds was excluded by patch test evaluation. This is relevant for future exposure to consumer products such as hair dyes or in occupational settings. Generally, black henna tattoos, particularly if done with dyes of unknown composition, should be strongly discouraged. PMID:23690526

  8. Um supressor de fundo térmico para a câmara infravermelha CamIV

    NASA Astrophysics Data System (ADS)

    Jablonski, F.; Laporte, R.

    2003-08-01

    O ângulo sólido subtendido pelos pixels na câmara infravermelha do NexGal (CamIV) que operamos no OPD/LNA contém contribuições provenientes do sistema de coleta de fluxo propriamente dito - sendo esta a parte que interessa para as medidas astronômicas - e contribuições da obstrução central, sistema de suporte do espelho secundário e região exterior à pupila de entrada do telescópio. Estas últimas contribuições são devi-das à emissão de corpo negro à temperatura ambiente e aumentam exponencialmente para comprimentos de onda maiores que 2 micra (banda K, no infravermelho próximo). Embora a resultante pode ser quantificada e subtraída dos sinais relevantes, sua variância se adiciona à variância do sinal, e pode ser facilmente a contribuição domi-nante para a incerteza final das medidas, tornando ineficiente o processo de extração de informação e degradando a sensibilidade da câmara. A maneira clássica de resolver esse problema em sistemas ópticos que operam no infravermelho, onde os efeitos da emissão térmica do ambiente são importantes, é restringir o ângulo sólido subtendido pelos pixels individuais exclusivamente aos raios provenientes do sistema óptico. Para tanto, projeta-se uma imagem real, bastante reduzida, da pupila de entrada do sistema óptico num anteparo que transmita para o sistema de imageamento só o que interessa, bloqueando as contribuições das bordas externas à pupila de entrada, obstrução central do telescópio e sistema de suporte. Como a projeção é realizada em ambiente criogênico, a contribuição térmica espúria é efetivamente eliminada. Nós optamos por um sistema do tipo Offner para implementar na prática esta função. Trata-se de um sistema baseado em espelhos esféricos, bastante compacto e ajustado por construção. A opção por espelhos do mesmo material que o sistema de suporte (Alumínio) minimiza a dilatação diferencial, crítica nesse tipo de aplicação. Apresentamos as soluções detalhadas do projeto óptico-mecânico, bem como uma análise de flexões e desempenho em termos de qualidade de imagem.

  9. Calcisponges have a ParaHox gene and dynamic expression of dispersed NK homeobox genes.

    PubMed

    Fortunato, Sofia A V; Adamski, Marcin; Ramos, Olivia Mendivil; Leininger, Sven; Liu, Jing; Ferrier, David E K; Adamska, Maja

    2014-10-30

    Sponges are simple animals with few cell types, but their genomes paradoxically contain a wide variety of developmental transcription factors, including homeobox genes belonging to the Antennapedia (ANTP) class, which in bilaterians encompass Hox, ParaHox and NK genes. In the genome of the demosponge Amphimedon queenslandica, no Hox or ParaHox genes are present, but NK genes are linked in a tight cluster similar to the NK clusters of bilaterians. It has been proposed that Hox and ParaHox genes originated from NK cluster genes after divergence of sponges from the lineage leading to cnidarians and bilaterians. On the other hand, synteny analysis lends support to the notion that the absence of Hox and ParaHox genes in Amphimedon is a result of secondary loss (the ghost locus hypothesis). Here we analysed complete suites of ANTP-class homeoboxes in two calcareous sponges, Sycon ciliatum and Leucosolenia complicata. Our phylogenetic analyses demonstrate that these calcisponges possess orthologues of bilaterian NK genes (Hex, Hmx and Msx), a varying number of additional NK genes and one ParaHox gene, Cdx. Despite the generation of scaffolds spanning multiple genes, we find no evidence of clustering of Sycon NK genes. All Sycon ANTP-class genes are developmentally expressed, with patterns suggesting their involvement in cell type specification in embryos and adults, metamorphosis and body plan patterning. These results demonstrate that ParaHox genes predate the origin of sponges, thus confirming the ghost locus hypothesis, and highlight the need to analyse the genomes of multiple sponge lineages to obtain a complete picture of the ancestral composition of the first animal genome. PMID:25355364

  10. Quantum rotation of ortho and para-water encapsulated in a fullerene cage

    PubMed Central

    Beduz, Carlo; Carravetta, Marina; Chen, Judy Y.-C.; Concistrè, Maria; Denning, Mark; Frunzi, Michael; Horsewill, Anthony J.; Johannessen, Ole G.; Lawler, Ronald; Lei, Xuegong; Levitt, Malcolm H.; Li, Yongjun; Mamone, Salvatore; Murata, Yasujiro; Nagel, Urmas; Nishida, Tomoko; Ollivier, Jacques; Rols, Stéphane; Rõõm, Toomas; Sarkar, Riddhiman; Turro, Nicholas J.; Yang, Yifeng

    2012-01-01

    Inelastic neutron scattering, far-infrared spectroscopy, and cryogenic nuclear magnetic resonance are used to investigate the quantized rotation and ortho–para conversion of single water molecules trapped inside closed fullerene cages. The existence of metastable ortho-water molecules is demonstrated, and the interconversion of ortho-and para-water spin isomers is tracked in real time. Our investigation reveals that the ground state of encapsulated ortho water has a lifted degeneracy, associated with symmetry-breaking of the water environment. PMID:22837402

  11. Natural bond orbital analysis of some para -substituted N -nitrosoacetanilide biological molecules

    Microsoft Academic Search

    Xiao-Hong Li; Rui-Zhou Zhang; Xian-Zhou Zhang

    2009-01-01

    Theoretical study of several para-substituted N-nitrosoacetanilide biological molecules has been performed using density functional B3LYP method with 6-31G(d,p) basis set.\\u000a Geometries obtained from DFT calculation were used to perform natural bond orbital analysis. The p characters of two nitrogen\\u000a natural hybrid orbital (NHO) ?\\u000a N3–N2 bond orbitals increase with increasing ?\\u000a p values of the para substituent group on the

  12. Animaciones en 3D en tiempo real para las clases de ciencias e ingeniería: Ejemplos desarrollados con el módulo de programación VPython

    Microsoft Academic Search

    Eduardo E. Rodríguez

    RESUMEN: Se describe el uso del módulo de programación VPython para desarrollar animaciones en 3D por computadora para ilustrar temas de interés para las clases. Mostramos la utilidad del uso de animaciones para reforzar las presentaciones de materias como física y matemática, entre otras. Con tales presentaciones se puede innovar en el desarrollo de las clases de ciencias e ingeniería

  13. A conceptual model for supporting para-teacher learning in an Indian non-governmental organization (NGO)

    Microsoft Academic Search

    Harini Raval; Susan Mckenney; Jules Pieters

    2010-01-01

    Non-governmental organizations (NGOs) are being recognized globally for their influential role in realizing the UN Millennium Development Goal of education for all in developing countries. NGOs mostly employ untrained para-educators for grassroots activities. The professional development of these teachers is critical for NGO effectiveness, yet para-teacher learning in such contexts is rarely researched. To facilitate much-needed research on para-teacher professional

  14. MAT 2351 Calculo para Func~oes de Varias Variaveis I PROVA 2 (peso: 1.2)

    E-print Network

    Piccione, Paolo

    - y + z = 3, determine aquele para o qual a quantidade 2x2 + y2 + 2z2 seja m´inima. BOA PROVA!!! #12 - x + z = 3, determine aquele para o qual a quantidade x2 + 2y2 + 2z2 seja m´inima. BOA PROVA!!! #12 do plano x-y +z = 3, determine aquele para o qual a quantidade x2 + 2y2 + 2z2 seja m´inima. BOA PROVA

  15. 2013-2014 Parent & Family Guide Texas Tech universiTy 1 especialmente para padres y familiares ........................................................................................ 2

    E-print Network

    Gelfond, Michael

    2013-2014 Parent & Family Guide Texas Tech universiTy 1 Contenido especialmente para padres y ........................................................ 8 recursos académicos en Texas Tech ..................................................................................................................... 22 Tradiciones de Texas Tech

  16. Normas para la elaboracin y evaluacin de la Tesis Doctoral 1 Decanato de

    E-print Network

    Vásquez, Carlos

    Normas para la elaboración y evaluación de la Tesis Doctoral 1 Decanato de Estudios de Post Grado 2 Decanato de Estudios de Post Grado EVALUACIÓN DE LA PROPUESTA DE TESIS DOCTORAL Coordinación EVALUACIÓN DE CONTENIDO DE LA TESIS DOCTORAL Coordinación Docente de Postgrado: Nombre del Programa de

  17. Metadatos normativos para la descripción de actividades educativas basadas en el uso de objetos didácticos

    Microsoft Academic Search

    Salvador Sánchez Alonso

    En la actualidad los registros de metadatos de los objetos didácticos son esencialmente descriptivos, pues están orientados a proporcionar informa- ción sobre los contenidos o el formato de un objeto didáctico, pero no incluyen explícitamente implicaciones para el momento de la ejecución de los sistemas gestores de aprendizaje (Learning Management Systems) que los utilizan. Sin embargo, existe una necesidad de

  18. BigBlueButton, una alternativa de cdigo abierto para la comunicacin interactiva en actividades educativas

    E-print Network

    Grimaldo, Francisco

    educativas Francisco Grimaldo, Ariadna Fuertes, Máximo Cobos, Miguel Arevalillo Carlos Pérez, Paloma Moreno utilización de una alternativa de código abierto en diversas actividades educativas que requieren comuni para la realiza- ción de actividades educativas, aunque también refle- jan alguna carencia frente

  19. COMUNICA - PLATAFORMA PARA EL DESARROLLO, DISTRIBUCIÓN Y EVALUACIÓN DE HERRAMIENTAS LOGOPÉDICAS ASISTIDAS POR ORDENADOR

    Microsoft Academic Search

    Oscar Saz; Eduardo Lleida; Carlos Vaquero

    RESUMEN Este trabajo presenta Comunica, la plataforma desarrolla- da por el Instituto de Investigación en Ingeniería de Aragón (I3A) en colaboración con diversas entidades educativas para el desarrollo y distribución de diferentes herramien- tas de logopedia y enseñanza lingüística basadas en Tec- nologías del Habla. El conjunto de aplicaciones desarrol- ladas proporciona entrenamiento desde los niveles prel- ingüísticos a losniveles

  20. SIGNIFICANT STRUCTURE THEORY OF LIQUID HYDROGEN IN ITS VARIOUS ORTHO-PARA AND ISOTOPIC FORMS

    Microsoft Academic Search

    Douglas Henderson; Henry Eyring; Dale Felix

    1962-01-01

    The significant structure theory of liquids was extended to include ; liquid hydrogen in its various ortho-para and isotopic forms. It was assumed ; that liquid hydrogen has a quasi-lattice structure in which the latiicc sites'' ; are occupied either by hydrogen molecules or holes of molecular size. Such a ; hole will confer gas-like properties on a molecule which

  1. The nongenotoxic carcinogens naphthalene and para-dichlorobenzene suppress apoptosis in

    E-print Network

    Xue, Ding

    The nongenotoxic carcinogens naphthalene and para-dichlorobenzene suppress apoptosis and are potential human carcinogens. However, their mechanisms of action remain unclear. Here we describe a novel. Carcinogens cause the majority of human cancers1,2. Based on their modes of action, carcinogens can

  2. IEEE TVCG SUBMISSION DRAFT 1 ParaGlide: Interactive Parameter Space

    E-print Network

    Möller, Torsten

    of the system. Consider, for instance, modeling the aggregation behavior of animals such as flocks of birdsGlide, a visualization system designed for interactive exploration of parameter spaces of multi-dimensional simulation developed ParaGlide in close collaboration with experts from three different domains, who all were involved

  3. NOTAS TAXONÓMICAS SOBRE EL GÉNERO VALERIANELLA MILL. (VALERIANACEAE) PARA LA FLORA IBÉRICA

    Microsoft Academic Search

    Juan Antonio DEVESA; Josefa LÓPEZ; Raúl GONZALO

    2005-01-01

    RESUMEN. Notas taxonómicas sobre el género Valerianella Mill. (Valerianaceae) para la Flora Ibérica. Sobre la base de estudios experimentales que han puesto de manifiesto que Valerianella coronata y V. pumila no son sino dos morfotipos de una misma especie, que difieren fundamentalmente en caracteres carpológicos, se plantea la hipótesis de que igual sucede en el caso de V. locusta V.

  4. Evaluation of Modified Formalin-Ether Concentration Method Using Para Tube in Clinical Settings

    PubMed Central

    Won, Eun Jeong; Kim, Jin

    2015-01-01

    Conventional formalin-ether concentration method is a gold standard for the diagnosis of parasite infection. However, it may be time-consuming and laborious. We aimed to reveal the clinical usefulness of a modified formalin-ether concentration method using the Para Tube (KS Corporation, Korea) compared with the conventional method. A total of 117 fresh, unpreserved fecal samples composed to 90 negative controls and 27 positive controls with ova of Diphyllobothrium latum/D. nihonkaiense, ova of Clonorchis sinensis and cysts of Giardia lamblia were used in this study. Both methods showed comparable correct identification rate (87.2% for the Para Tube vs. 86.3% for the conventional method).When five samples were examined at once, the Para Tube method reduced the procedure time compared with the conventional method (19 min 58 sec vs. 23 min 18 sec, P=0.0286). We concluded that the modified formalin-ether concentration method using the Para Tube is a rapid, simple, and reliable fecal concentration method for clinical use. PMID:26131417

  5. Mtodos de depuracin HW-SW para sistemas on chip reconfigurables.

    E-print Network

    Autònoma de Barcelona, Universitat

    disponibles. Para permitir la asignación en tiempo real de los recursos, el sistema operativo y la plataforma interacción entre los dos y la plataforma. En este artículo presen- tamos un módulo de depuración software y el código en la plataforma final ayuda considerablemente a detectar errores debidos a la ejecución en

  6. ContentNet: um framework para interoperabilidade de contedos educacionais utilizando a plataforma IMS

    E-print Network

    Endler, Markus

    ContentNet: um framework para interoperabilidade de conteúdos educacionais utilizando a plataforma, a plataforma IMS, um consórcio de organizações acadêmicas, comerciais e governamentais, vem desenvolvendo e conteúdos educacionais disponíveis em servidores compatíveis com a plataforma IMS. Palavras­chave: Conteúdo

  7. UNA ARQUITECTURA SEGMENTADA PARA EL CLCULO DEL TIEMPO AL IMPACTO CON VISIN LOG-POLAR

    E-print Network

    Valencia, Universidad de

    de cerca de 90 imágenes por segundo. 1. Introducción La navegación de plataformas móviles autónomas múltiples métodos de sensorización de una plataforma móvil destaca la sensorización visual por combinar una plataforma móvil tendrá. Esta potencia de cálculo, necesaria para la plataforma móvil, es un problema que

  8. Apertium, una plataforma de cdigo abierto para el desarrollo de sistemas

    E-print Network

    Forcada, Mikel L.

    Apertium, una plataforma de código abierto para el desarrollo de sistemas de traducción automática.org, una plataforma avanzada de código abierto, con licencia GNU GPL, que, gracias al desacoplamiento que plataforma Apertium ha sido desarrollada por el grupo de investi- gación Transducens de la Universitat d

  9. FleXml: Plataforma de Ensino a Distância para Promover Flexibilidade Cognitiva

    Microsoft Academic Search

    Ana Amélia; Amorim Carvalho; Carlos Sousa Pinto; Pedro Jorge Martins Monteiro

    Resumo- Esta comunicação apresenta a plataforma Web FleXml para ensino a distância, desenvolvi da na Universidade do Minho, em Portugal, e estruturada segundo os princípios da Teoria de Flexibilidade Cognitiva. Começamos por caracterizar a referida teoria, passando de seguida a descrever a plataforma Web FleXml em termos da sua arquitectura e funcio namento nos módulos autor e leitor. Por fim,

  10. Rocas para construcción y ornamentación en Chile: geología, distribución y aplicaciones

    Microsoft Academic Search

    A. Gajardo; R. Carrasco

    3 . El único yacimiento de lapislázu- li, conocido en el país, se encuentra en calizas metamorfizadas del Cretácico inferior. El lapislázuli presenta colores entre azul intenso y celeste y se utiliza para elaborar objetos decorativos y pigmento azul. Los yacimientos de mármol corresponden a calizas recristalizadas por efectos termales ocurridos en el Jurásico y en el Cretácico inferior. Presentan

  11. LIVROS DIDTICOS E SUAS FUNES PARA O PROFESSOR DE MATEMTICA NO BRASIL E NA FRANA.

    E-print Network

    Paris-Sud XI, Université de

    LIVROS DIDÁTICOS E SUAS FUNÇÕES PARA O PROFESSOR DE MATEMÁTICA NO BRASIL E NA FRANÇA. Clovis Gomes (França) GP 0517 Psicologia da educação matemática ­UNICAMP Campinas SP (Brasil) Jean dois países. No Brasil a compra de livros didáticos pelo governo brasileiro envolve volumes e cifras de

  12. El estudio NCI-MATCH vinculará medicamentos dirigidos para el cáncer con anomalías genéticas

    Cancer.gov

    Los investigadores del estudio a nivel nacional NCI-MATCH: Análisis molecular para la elección de tratamientos, anunciaron que el estudio busca determinar la eficacia de los tratamientos dirigidos en personas con tumores que presentan mutaciones genéticas específicas independientemente de su tipo de cáncer.

  13. CENTRO CLINICO DE CNCER DE STANFORD CARTA INFORMATIVA SOBRE LA CITA PARA PACIENTES NUEVOS

    E-print Network

    Bogyo, Matthew

    HEMATOLOGY Centro Clínico de Cáncer de Stanford Centro De Medicina Avanzada Fecha: 875 Blake Wilbur Drive/a _______________________________________, Tiene una cita programada con el Departamento de Hematology. Por favor vea la fecha y hora de su cita CÁNCER DE STANFORD CARTA INFORMATIVA SOBRE LA CITA PARA PACIENTES NUEVOS HEMATOLOGY La clínica Hematology

  14. Aprendizaje Evolutivo de los Contextos de las Funciones de Pertenencia para

    E-print Network

    Granada, Universidad de

    Aprendizaje Evolutivo de los Contextos de las Funciones de Pertenencia para Extraer Reglas de algoritmos de Minería de Datos que extraen reglas de asociación di- fusas asumen que las funciones de pertenen- cia se conocen previamente. Sin embargo, las funciones de pertenencia pueden tener una influencia

  15. NORMAS PARA A CONSULTA/ELEIO COMUNIDADE A Comisso Eleitoral designada pela Diretora do Setor de

    E-print Network

    Paraná, Universidade Federal do

    -COORDENADOR DO CURSO DE PEDAGOGIA PRESENCIAL / COOPED. Art.1º Será realizada a consulta à comunidade setorial alunos dos cursos de graduação de Pedagogia, modalidade presencial; para os cargos de COORDENADOR E VICE- COORDENADOR DO CURSO DE PEDAGOGIA PRESENCIAL / COOPED. Art. 2º A referida consulta, convocada por edital desta

  16. COMPARACIÓN DE LOS MÉTODOS FENOTÍPICO Y MOLECULAR PARA IDENTIFICACIÓN DE PATÓGENOS EN ALIMENTOS

    Microsoft Academic Search

    María Luisa Carrillo-Inungaray; Rocío Crystabel López González; Brenda Alvarado Sánchez; Mayra Aguilar Zárate

    2011-01-01

    Las enfermedades transmitidas por alimentos (ETA), representan un creciente problema de salud pública a nivel mundial. Las más frecuentes son las ocasionadas por Salmonella spp., Escherichia coli y Vibrio cholerae, razón por la que es importante su identificación en los alimentos. Para tal fin, existen métodos basados en las características bioquímicas del microorganismo -método fenotípico- y en la técnica de

  17. Significado de los cambios en el cuello uterino: Guía para la salud de la mujer

    Cancer.gov

    Explica los pasos que deben seguirse después de un resultado anormal en una prueba de Pap o del VPH, así como las formas de diagnosticar y tratar las afecciones en el cuello uterino. También contiene información sobre las pautas para los exámenes de detección y las vacunas contra el VPH.

  18. Production, Crystallization, and Raman Shifting with para-Hydrogen Lauren E. Moore

    E-print Network

    McCall, Benjamin J.

    . Bonhoeffer and Hartek built the first device to convert ortho- to para- hydrogen in 1929, using activated charcoal as the catalyst and either liquid nitrogen or liquid helium to cool the system [2]. Higher ferric oxide and Apache nickel silica (manufactured by Houdry), both of which must be activated to work

  19. Reconocer los derechos de los migrantes para fortalecer la integracin regional

    E-print Network

    Richner, Heinz

    Reconocer los derechos de los migrantes para fortalecer la integración regional Buscando una vida su derecho al trabajo. ·El bienestar de las personas migrantes requiere que el Estado y los empleadores garanticen sus derechos sin distinción de condición jurídica, política o social. ·Los más

  20. INSTRUCCIONES DE ACTUACIN PARA LOS MIEMBROS DE LA DEFENSORA DE LOS DERECHOS UNIVERSITARIOS,

    E-print Network

    Arroyo Rodríguez, Víctor

    INSTRUCCIONES DE ACTUACIÓN PARA LOS MIEMBROS DE LA DEFENSORÍA DE LOS DERECHOS UNIVERSITARIOS, RELATIVAS A LA PRESERVACIÓN Y OBSERVANCIA DE LOS DERECHOS Y OBLIGACIONES DE LOS UNIVERSITARIOS EN EL los Derechos Universitarios después de analizar dichos LINEAMIENTOS aprecia que los mismos son acordes

  1. Can para-aryl-dithiols cross-link two plasmonic noble nanoparticles as monolayer dithiolate spacers

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Para-aryl-dithiols (PADTs, HS-(C6H4)n-SH, n = 1, 2, and 3) have been used extensively in molecular electronics, surface-enhanced Raman spectroscopy (SERS), and quantum electron tunneling between two gold or silver nanoparticles (AuNPs and AgNPs). One popular belief is that these dithiols cross-link ...

  2. PROTOCOLO DE COLETA DE MATERIAL BIOLGICO PARA ESTUDOS DE GENTICA MOLECULAR EM CARNVOROS E OUTROS

    E-print Network

    Eizirik, Eduardo

    PROTOCOLO DE COLETA DE MATERIAL BIOLÓGICO PARA ESTUDOS DE GENÉTICA MOLECULAR EM CARNÍVOROS E OUTROS encontrados mortos (p. ex. em estradas), peles apreendidas e qualquer outro material disponível. Apesar de a ênfase atual de nossas pesquisas em genética ser em carnívoros neotropicais, pesquisas similares com

  3. Dicas para cruzeiros Todos os anos, milhes de cidados americanos saem em cruzeiros de frias. Em

    E-print Network

    Dicas para cruzeiros Todos os anos, milhões de cidadãos americanos saem em cruzeiros de férias. Em 2003, aproximadamente 8,3 milhões de passageiros embarcaram em diversos portos norte-americanos em cruzeiros de férias (fonte: Cruise Lines International Association). As viagens em navios de cruzeiro expõem

  4. Interrupting commemoration: thinking with art, thinking through the strictures of Argentina's Espacio para lamemoria

    Microsoft Academic Search

    Mario Di Paolantonio

    2011-01-01

    Recently, a few buildings within the Espacio para la memoria in Buenos Aires have been designated as a UNESCO Centre where, amongst other educational activities, evidentiary materials of the past repression are to be stored and displayed. Another building in the complex houses a Community Centre operated by the Mothers of the Plaza de Mayo, where the mandate is to

  5. 9.2. Universidad abierta para mayores La UOM en Mallorca

    E-print Network

    Oro, Daniel

    9.2. Universidad abierta para mayores La UOM en Mallorca Diplomas de la UOM (campus universitario). - Universidad Técnica de Dortmund (Alemania). #12;La UOM en los Pueblos de Mallorca: del 25 de abril al 5 de junio de 2012. Es un ciclo de 5 conferencias que se realizan en diferentes pueblos de Mallorca, este

  6. Lista de alumnos por tribunales (actualizado 21-7-2014) Informacin para los alumnos

    E-print Network

    Rey Juan Carlos, Universidad

    , Salvador Elaboración de productos periodísticos con apoyo documental. El uso de las fuentes para reportajes. José Luis Rodríguez Grado en Periodismo Fuenlabrada 05321552-L Barranco García, Andrea Puedes ser tú. La solidaridad como consecuencia de la crisis en Madrid. José Luis Martín Sáez Doble Grado en

  7. Desarrollo de Técnicas Ultrasónicas para Seguimiento y Interacción de la Marcha

    Microsoft Academic Search

    Anselmo Frizera; Rafael Raya; Juan C. Moreno; Ramón Ceres; Leopoldo Calderón

    En este trabajo se expone un sistema ultrasónico en desarrollo de captación y seguimiento de la marcha que es empleado como entrada a un sistema de control en el que eventualmente los patrones de movimientos y posiciones constituyen realmente un medio de comunicación ya sea de tipo general o bien para control natural de dispositivos de ayuda a la movilidad.

  8. Programa de análisis molecular para la elección de tratamientos del NCI (NCI-MATCH)

    Cancer.gov

    Información sobre el Programa de análisis molecular para la elección de tratamientos del NCI (NCI-MATCH), en el cual los investigadores examinarán tejidos de tumor de pacientes con tumores sólidos y linfomas avanzados que han dejado de responder al tratamiento.

  9. Familiares a cargo de pacientes de cáncer: funciones y desafíos–para profesionales de salud (PDQ®)

    Cancer.gov

    Sumario informativo revisado por expertos acerca de los desafíos que enfrentan los familiares a cargo de los pacientes con cáncer. Este resumen se centra en las funciones típicas y las inquietudes de las personas a cargo del paciente y en las intervenciones útiles para esas personas.

  10. Comunicación en la atención del cáncer–para profesionales de salud (PDQ®)

    Cancer.gov

    Resumen de información revisada por expertos sobre la comunicación con el paciente de cáncer y su familia, incluso los aspectos distintivos de la comunicación con pacientes de cáncer, los factores que afectan la comunicación y el entrenamiento de las aptitudes para la comunicación.

  11. EL “WIKI” COMO RECURSO PARA DESARROLLAR COMPETENCIAS EN EL PROCESO DE ENSEÑANZA-APRENDIZAJE

    Microsoft Academic Search

    Mabel López García; José María Souvirón Morenilla

    2010-01-01

    En el presente trabajo se analiza la utilidad de las tecnologías de la información y la comunicación (TIC), y específicamente del “Wiki”, como herramienta para el modelo de enseñanza-aprendizaje derivado del Espacio Europeo de Educación Superior (EEES). Se realiza una aproximación al significado del EEES y al modelo de enseñanza que propone, en el que lo relevante no es tanto

  12. La actuación pública para el fomento de nuevas empresas Hacia un enfoque de política económica

    Microsoft Academic Search

    José Antonio; Belso Martínez

    A lo largo de este trabajo abordaremos la tarea de analizar el perfil de las distintas actuaciones y la potencial existencia de una política econó- mica específica de creación de empresas, tras lo que trataremos de esta- blecer, en su caso, una posible estructura de la misma. Para alcanzar sen- dos propósitos intentaremos: revisar las líneas generales de los diferentes

  13. UNIVERSIDAD SIMN BOLVAR Programa @urora para la Gestin del Documento Electrnico

    E-print Network

    Vásquez, Carlos

    . Diagnóstico 1. Procesos administrativos repetitivos y carentes de eficiencia y eficacia. 2. Informalidad en procesos administrativos y académicos de la USB". Eje 4: "Universidad Innovadora y Emprendedora". Objetivo metodología para el abordaje de los procesos documentales en la Universidad Simón Bolívar, desde el punto de

  14. Self-assembled monolayers of benzylmercaptan and para-cyanobenzylmercaptan on gold: surface infrared

    E-print Network

    Pfeifer, Holger

    Self-assembled monolayers of benzylmercaptan and para-cyanobenzylmercaptan on gold: surface as an Advance Article on the web 5th March 2010 DOI: 10.1039/b923628g Self-assembled monolayers (SAMs) on gold for the structural and spectroscopic characterization of self-assembled monolayers (SAMs) which have important

  15. LAS INTELIGENCIAS EMOCIONAL Y SOCIAL COMO COMPLEMENTO A LA RACIONAL PARA FACILITAR EL DESARROLLO PROFESIONAL

    Microsoft Academic Search

    José Manuel García López

    2010-01-01

    En este documento se analiza lo importante que resulta el tener un buen manejo de las emociones y de las relaciones sociales o interpersonales como estrategia para tener éxito personal o profesional, dado que en la actualidad son dos características adicionales a la inteligencia racional muy valoradas en las organizaciones y que permiten a los individuos tener mayores o mejores

  16. Sensores CMOS para robotica e industria: Sensor ret nico espacio variante y vision activa

    E-print Network

    Valencia, Universidad de

    Sensores CMOS para robotica e industria: Sensor ret nico espacio variante y vision activa Fernando Pardo, Francisco Vegara, Jose A. Boluda, Santiago Felici Instituto de Robotica Universidad de Valencia C venido estudiando especialmente en el terreno de aplicaciones en robotica 2]. Sin em- bargo, en el

  17. Cuadro de mando y sistemas de información: herramientas estratégicas para la gestión medioambiental corporativa

    Microsoft Academic Search

    Frank Medel; Lourdes García; Liesby Gómez; Rebeca Pentón

    2011-01-01

    En la actualidad protección del ambiente es un nuevo e importante objetivo estratégico de las empresas cubanas y del mundo. La información medioambiental se vuelve cada vez más relevante para las decisiones económicas, por lo que es necesario manejarla de manera oportuna. Muchas entidades presentan Sistemas de Gestión Medioambientales según NC ISO 14000 que se quedan en fases meramente declarativas

  18. Plataforma para la verificacion de la Calidad de servicio en entornos Intra e Inter-dominio

    E-print Network

    Politècnica de Catalunya, Universitat

    el contrato se est´e dando de forma correcta. El sistema propuesto permite obtener informaci´on de [V. 98] y [ITU02]. Con esta informaci´on, el sistema proporciona el punto de vista que el usuario red para dicha verificaci´on. Con el objetivo de proporcionar una plataforma gen´erica, el sistema

  19. PRUEBA DE ACCESO A LA UNIVERSIDAD PARA MAYORES DE 25 AOS Asignatura GEOGRAFA

    E-print Network

    Escolano, Francisco

    , general en todas las edades, ha sido muy intensa entre los jóvenes. Esta disminución de las bodas no ha lleguen a la edad de la jubilación). Menos jóvenes que, probablemente, no tendrán dificultades para mapa indique: a) Las cuatro provincias españolas con menor porcentaje de jóvenes. b) ¿Qué provincia de

  20. ¿POR QUE COMENZAR CON UN INGRESO CIUDADANO PARA LOS MENORES EN AMERICA LATINA?

    Microsoft Academic Search

    Alberto C. Barbeito; Rubén M. Lo Vuolo

    La característica central de todas las nociones afines con el concepto de ingreso básico o ingreso ciudadano (IC) es que se refieren a un arreglo institucional que garantiza cierta forma de ingreso incondicional a las personas, esto es, un ingreso para cuyo acceso no se requiere ninguna otra condición personal que la de ser ciudadano. Por ejemplo, no se requiere

  1. Desafíos para una agricultura con bajas emisiones de carbono y conservación forestal en Brasil

    Microsoft Academic Search

    Britaldo Soares Filho; Letícia Lima; Maria Bowman; Letícia Viana

    2012-01-01

    Este artículo se examina la retroalimentación que existe entre cambio climático, deforestación y expansión agropecuaria, y presenta escenarios relativos a la demanda agropecuaria y a las políticas de conservación y recuperación forestal en Brasil. Asimismo, se examinan las implicancias de estos escenarios para el abastecimiento de alimentos y carne, la provisión de servicios de los ecosistemas, y la mitigación del

  2. EVALUACIÓN DE LA APTITUD DE MATERIALES PARA CONTACTO ALIMENTARIO: EL CASO DEL PAPEL Y CARTÓN

    Microsoft Academic Search

    M. Sarria-Vidal; J. Simal-Gándara

    1997-01-01

    El presente trabajo está principalmente enfocado en la evaluación de la migración de componentes de materiales de envasado al alimento, así como en los cambios en la calidad del alimento debidos a este fenómeno. Se realiza una revisión de la legislación europea sobre materiales para contacto alimentario, comparando esta legislación con otras fuera de la Unión Europea. La legislación europea

  3. Curvas de Phillips y NAWRUs regionales: Evidencia empírica para la economía española

    Microsoft Academic Search

    Javier Capó Parrilla; Francisco Gómez García

    2004-01-01

    En este trabajo proporcionamos estimaciones de las NAWRUs (Tasa de Desempleo no Aceleradora de los Salarios) regionales de la economía española para el periodo 1989-2000. Hemos utilizado el método de Elmeskov, ampliamente implementado en la última década -por ejemplo en el marco del FMI y la OCDE- con el objetivo de obtener una \\

  4. Trastorno por déficit de atención con hiperactividad: orientaciones psicoeducativas para los padres

    Microsoft Academic Search

    López Villalobos; S. Alberola López; José Antonio López Villalobos

    2008-01-01

    Resumen Se exponen orientaciones psicoeducativas para padres de niños con trastorno por déficit de atención con hiperactividad (TDAH), basadas en criterios empíricos, teóricos y clínicos, abor- dando las siguientes dimensiones: ambiente familiar, modelado, refuerzo de conducta, normas, autonomía y autoestima, aprender a pensar y saber esperar, atención, relación con compañeros, grupo familiar, adolescencia y una reflexión sobre el tratamiento. Palabras

  5. RESOLUO N 42/03-COUN Fixa as normas para os Cursos de Especializao e

    E-print Network

    Paraná, Universidade Federal do

    RESOLUÇÃO Nº 42/03-COUN Fixa as normas para os Cursos de Especialização e Aperfeiçoamento da a graduados e constituída por cursos sistematicamente organizados, visando desenvolver, complementar, aprimorar ou aprofundar conhecimentos, com previsão de obtenção de certificados. § 1º Os cursos normatizados

  6. LA EDUCACIÓN AMBIENTAL PARA EL DESARROLLO SOSTENIBLE EN LOS ESTUDIANTES DE LA EDUCACIÓN DE ADULTOS

    Microsoft Academic Search

    Herenio Zaldívar Hechavarría; Yolennis Zaldívar Torres

    2012-01-01

    La educación ambiental para el desarrollo sostenible es una línea importante a desarrollar en la Educación de Adultos, por cuanto el adulto es estudiante y trabajador que puede influir positivamente en la protección del medio ambiente y el desarrollo sostenible en las diferentes comunidades, lo que justifica la necesidad de elevar su preparación, en este sentido como uno de los

  7. EDITA: CADEP -La comisin sectorial de la CRUE para la Calidad ambiental, el Desarrollo sostenible

    E-print Network

    Fraguela, Basilio B.

    Edafología y Química Agrícola y Coordinadora del Plan de Desarrollo Sostenible de la Universidad de Santiago Excoordinadora del Plan de Desarrollo Sostenible de la Universidad de Santiago de Compostela. · Noelia López#12;EDITA: CADEP - La comisión sectorial de la CRUE para la Calidad ambiental, el Desarrollo

  8. REFERNCIA PARA CANDIDATO A CURSO DE PS-GRADUAO I. DADOS DO CANDIDATO

    E-print Network

    REFERÊNCIA PARA CANDIDATO A CURSO DE PÓS-GRADUAÇÃO I. DADOS DO CANDIDATO Nome: Curso Superior realizado: Universidade: Início: Término: Curso pretendido no INPE: Nível: Mestrado Doutorado II. DADOS DO Professor: O candidato acima pretende realizar Curso de Pós-Graduação no INPE. Gostaríamos de contar com

  9. CONVOCATORIA DE BECAS PARA LA UNIVERSIDAD DE VERANO RAFAEL ALTAMIRA. CURSOS 2012.

    E-print Network

    Escolano, Francisco

    CONVOCATORIA DE BECAS PARA LA UNIVERSIDAD DE VERANO RAFAEL ALTAMIRA. CURSOS 2012. RESOLUCIÓN de 15 asistencia a los Cursos de Verano organizados por el Vicerrectorado de Extensión Universitaria en el marco de participación en los cursos del alumnado que presentando una brillante trayectoria académica, cuentan con unos

  10. Summer activities Cursos de espaol para extranjeros (Centro Superior de Idiomas de la UA)

    E-print Network

    Escolano, Francisco

    Summer activities Idiomas Cursos de español para extranjeros (Centro Superior de Idiomas de la UA) AULAS: Cursos de Francés, inglés, alemán, italiano, árabe, ruso y de preparación exámenes oficiales Idiomas de la UA) Cursos intensivos de Chino, Japonés y Coreano en julio (Oficina de Relaciones con Asia

  11. La UA oferta 30 talleres y cursos de temtica cultural para el primer cuatrimestre del curso

    E-print Network

    Escolano, Francisco

    La UA oferta 30 talleres y cursos de temática cultural para el primer cuatrimestre del curso el primer cuatrimestre del curso 30 nuevos talleres y cursos de variada temática cultural: artes matrícula La oferta incluye cursos de fotografía, tanto en blanco y negro como digital, pintura al aire

  12. Actividades de verano Cursos de espaol para extranjeros (Centro Superior de Idiomas de la UA)

    E-print Network

    Escolano, Francisco

    Actividades de verano Idiomas Cursos de español para extranjeros (Centro Superior de Idiomas de la UA) AULAS: Cursos de Francés, inglés, alemán, italiano, árabe, ruso y de preparación exámenes de Idiomas de la UA) Cursos intensivos de Chino, Japonés y Coreano en julio (Oficina de Relaciones

  13. Evaluación paramétrica y no paramétrica del desempleo pesquero en Marruecos: Una aplicación para el caso andaluz

    Microsoft Academic Search

    Encarnación Cordón Lagares; Félix García Ordaz

    2010-01-01

    RESUMEN El principal objetivo es el análisis de las medidas que las diferentes administraciones pusieron en marcha para reducir las altas tasas de desempleo en la población andaluza afectada por la paralización de la actividad pesquera como consecuencia de la finalización del Acuerdo de Pesca entre la Unión Europea y Marruecos desde el 30 de noviembre de 1999. Mediante la

  14. LA DEMANDA DE TURISMO RURAL. UN ANÁLISIS PARA EL NORTE DE MARRUECOS

    Microsoft Academic Search

    Lorenzo Estepa Mohedano; Genoveva Millán Vázquez de la Torre

    2011-01-01

    El turista europeo demanda cada vez destinos más exóticos; la cercanía a Europa convierte a Marruecos en un destino cada vez más atractivo para este mercado. El sector turístico ha sido objeto de grandes transformaciones a lo largo de la pasada década orientada al refuerzo de la capacidad hotelera, la formación profesional y la promoción exterior que ha dado sus

  15. Sugestões para o uso do mini-exame do estado mental no Brasil

    Microsoft Academic Search

    Sonia M. D. Brucki; Ricardo Nitrini; Paulo Caramelli; Paulo H. F. Bertolucci; Ivan H. Okamoto

    2003-01-01

    RESUMO - Modificações no mini-exame do estado mental (MEM) foram sugeridas anteriormente em nosso meio. Neste artigo relatamos sugestões para aplicação uniforme deste instrumento. Método: Avaliamos 433 indivíduos saudáveis sem queixas de memória através do MEM tendo seu desempenho sido avaliado quanto às variáveis demográficas. As modificações propostas foram detalhadamente descritas. Resultados: A escolaridade foi o principal fator que influenciou

  16. Longitudinal nuclear spin relaxation of ortho- and para-hydrogen dissolved in organic solvents.

    PubMed

    Aroulanda, Christie; Starovoytova, Larisa; Canet, Daniel

    2007-10-25

    The longitudinal relaxation time of ortho-hydrogen (the spin isomer directly observable by NMR) has been measured in various organic solvents as a function of temperature. Experimental data are perfectly interpreted by postulating two mechanisms, namely intramolecular dipolar interaction and spin-rotation, with activation energies specific to these two mechanisms and to the solvent in which hydrogen is dissolved. This permits a clear separation of the two contributions at any temperature. Contrary to the self-diffusion coefficients at a given temperature, the rotational correlation times extracted from the dipolar relaxation contribution do not exhibit any definite trend with respect to solvent viscosity. Likewise, the spin-rotation correlation time obeys Hubbard's relation only in the case of hydrogen dissolved in acetone-d6, yielding in that case a spin-rotation constant in agreement with literature data. Concerning para-hydrogen, which is NMR-silent, the only feasible approach is to dissolve para-enriched hydrogen in these solvents and to follow the back-conversion of the para-isomer into the ortho-isomer. Experimentally, this conversion has been observed to be exponential, with a time constant assumed to be the relaxation time of the singlet state (the spin state of the para-isomer). A theory, based on intermolecular dipolar interactions, has been worked out for explaining the very large values of these relaxation times which appear to be solvent-dependent. PMID:17914761

  17. Un Enfoque Unificado de Sistema de Hormigas para Resolver Problemas VRP

    Microsoft Academic Search

    Emely Arraiz; Oscar Mez; Guillermo Palm

    Resumen En este art´iculo se propone un Sistema de Hormigas Unificado (SHUVRP) para el problema de enrutamiento de veh´iculos VRP. Se estudia su robustez y el rendimiento en cuatro clases diferentes de problemas o instancias VRP. Ellos son VRP con capacidad, VRP con ventanas de tiempo, VRP con entrega y recoleccion y VRP con entrega, recoleccion con ventanas de tiempo.

  18. Effective treatment with para-aminomethylbenzoic acid for chronic disseminated intravascular coagulation associated with aortic dissection.

    PubMed

    Cui, Qingya; Wu, Tianqin; Chen, Haifei; Qin, Longmei; Yu, Ziqiang; Shen, Hongshi; Wang, Zhaoyue

    2015-04-01

    Chronic disseminated intravascular coagulation is a rare complication of aortic dissection. Surgical correction or low molecular weight heparin is treatment of choice, but for a severe bleeding problem due to excessive fibrinolysis, para-aminomethylbenzoic acid would be a simple and effective therapeutic approach. PMID:24695090

  19. PRESENTACIN DE CLSICAS Y MODERNAS, Asociacin para la igualdad de gnero en la cultura

    E-print Network

    Escolano, Francisco

    PRESENTACIÓN DE CLÁSICAS Y MODERNAS, Asociación para la igualdad de género en la cultura Y EL DEBATE PENDIENTE, MUJERES Y CULTURA, 4º CICLO Miércoles 11 de diciembre de 2013. Sala Rafael Altamira de CULTURA. EXPERIENCIAS EUROPEAS. Clásicas y Modernas, una asociación faro, por Laura Freixas, presidenta de

  20. UN ENFOQUE CONSTRUCTIVISTA PARA USO DE MAPAS CONCEPTUALES EN EDUCACIÓN A DISTANCIA DE PROFESORES

    Microsoft Academic Search

    Lea Fagundes; Alberto J. Cañas

    Resumen. Este trabajo presenta una propuesta de utilización de los mapas conceptuales en la formación de profesores a distancia usando el software CmapTools del Institute for Human and Machine Cognition, dentro de un paradigma constructivista. Nuestra propuesta utiliza como base teórica la Epistemología Genética de Jean Piaget y, en especial, la teoría de las Implicaciones Significantes para la construcción de

  1. Plataforma de Comparacion para la Prediccion Dinamica de Saltos en Hardware FPGA

    E-print Network

    Vintan, Lucian N.

    saltos se puede realizar en tiempo de compilaci´on (est´atica) o en tiempo de ejecuci´on (din con algunos benchmark del SPEC2000 compilados para una m´aquina PISA. Obteni´endose los resultados es

  2. TECNOLOGÍAS ANAEROBIAS PARA LA DEPURACIÓN TERMOFÍLICA DE VERTIDOS DE DESTILERÍAS VÍNICAS

    Microsoft Academic Search

    Pérez García; Romero García

    RESUMEN: Se ha estudiado el período de reinicio, puesta en funcionamiento y operación de dos tecnologías anaerobias, Tanque Agitado (TA) y Filtro Anaerobio (FA), susceptibles de ser utilizadas para la degradación de vertidos de destilerías vínicas (vinazas de vino) en condiciones anaerobias termofílicas (55°C). Los resultados experimentales obtenidos indican que los reactores TA pueden operar tras dos años de inactividad

  3. Escalamiento en la Densidad de Im agenes para una Reconstrucci on Tridimensional

    E-print Network

    Fraga, Luis Gerardo de la

    ;ectrica Av. Instituto Polit#19;ecnico Nacional 2508. 07300 M#19;exico, D.F. E-mail: fraga) Todas las proyecciones comparten un mismo origen de coordenadas, es decir, no existen desplazamientos en origen de coordenadas, correctos para todas las proyecciones y nos enfocaremos al punto (3) de los pesos

  4. Propuesta para mitigar riesgo en proyectos de construcción ejecutados en sitios remotos

    Microsoft Academic Search

    J. RIVERA

    RESUMEN: el transcurso del tiempo y el fracaso de proyectos por falta de planeación, han evidenciado la importancia del manejo de riesgos en proyectos de construcción ejecutados en sitios remotos. Si bien es cierto que este tema solo ha cobrado importancia recientemente, existen las herramientas necesarias para planear y dar respuesta a los riesgos que eventualmente pueden afectar un proyecto.

  5. PARA ACABAR CON LA VERDAD-DEMOSTRACION. BACHE,LARD, CANGUILHEM, FOUCAULT

    E-print Network

    Paris-Sud XI, Université de

    and the scope of Michel Foucault's uhistory of truthr, i.e. his history of the relationship between truth, power gouuernement des uiuants, 30.01.80) Uno de los principales objetivos de la reflexión del último Michel FoucaultPARA ACABAR CON LA VERDAD-DEMOSTRACION. BACHE,LARD, CANGUILHEM, FOUCAULT Y LA HISTOzuA DE, LOS (RE

  6. 1 rea Temtica (no escribir nada aqu) Utilizacin de una herramienta de comunicacin online para la

    E-print Network

    Grimaldo, Francisco

    la mejora docente. Dos casos prácticos. Francisco Grimaldo-Moreno, Miguel Arevalillo-Hérraez, Emilia oficial universitario, para permitir la participación de profesores desde el extranjero. En ambos casos cooperación institucional, esquemas de movilidad y programas integrados de estudios, de formación y de

  7. Comparison of para-aminophenol cytotoxicity in rat renal epithelial cells and hepatocytes

    Microsoft Academic Search

    Ying Li; Catherine M. Bentzley; Joan B. Tarloff

    2005-01-01

    Several chemicals, including para-aminophenol (PAP), produce kidney damage in the absence of hepatic damage. Selective nephrotoxicity may be related to the ability of the kidney to reabsorb filtered water, thereby raising the intraluminal concentration of toxicants and exposing tubular epithelial cells to higher concentrations than would be present in other tissues. The present experiments tested the hypothesis that hepatocytes and

  8. La identidad profesional: una cualidad esencial para la formación inicial del psicopedagogo

    Microsoft Academic Search

    Ada Yunia Oliva Feria

    2011-01-01

    La formación inicial contemporánea del psicopedagogo es una prioridad en las Universidades de Ciencias Pedagógicas, dada por la implicación social que ejerce este en la orientación y asesoría educativa a estudiantes, familiares, y vecinos de la comunidad entre otras funciones inherentes al Licenciado en Educación, especialidad Pedagogía-Psicología. Para contribuir con la formación de un especialista de excelencia en estas disciplinas

  9. Plataforma para la planeación estratégica hacia sociedades del conocimiento. Empresas regionales

    Microsoft Academic Search

    Ricardo Contreras Soto; Adolfo Rodríguez Santoyo

    2006-01-01

    El presente es un estudio exploratorio, donde partimos de las necesidades prioritarias de un sondeo en las empresas (278) de la región Bajío de Guanajuato, levantado entre los años del 2002 al 2003 y retomado actualmente para su análisis más profundo por la importancia, sentido y magnitud de la información revelada. Con el propósito de identificar las líneas problemáticas generales

  10. PSA: Instrumentos y mecanismos financieros para la gestión sostenible de recursos naturales

    Microsoft Academic Search

    Marina Kosmus

    2006-01-01

    Esta presentación fue comisionada por la Red de Medio Ambiente del Diálogo Regional de Política para la Reunión Subregional del Cono Sur celebrada el día 17 de abril de 2006 en Buenos Aires, Argentina. La presentación expone el concepto PSA: los proveedores de servicios ambientales están compensados por mantener la provisión de dichos servicios, mientras que los que se benefician

  11. La investigación acción participativa: instrumento para la transformación del trabajo en las microuniversidades rurales

    Microsoft Academic Search

    Maribel Asín Cala; Lenin Massó Salazar

    2011-01-01

    La realidad de las micro universidades rurales dentro del contexto de la universalización superior pedagógica en Cuba, y particularmente del trabajo del tutor para la asesoría de los docentes en formación, precisa de una forma de organización del trabajo que permita la transformación de directores, tutores y docentes en formación en el propio proceso docente educativo. Es sugerente, entonces, incluir

  12. Development of a set of equations describing joint trajectories during para-sagittal lifting

    Microsoft Academic Search

    Simon M. Hsiang; Chien-Chi Chang; Raymond W. McGorry

    1999-01-01

    Given a lifting task with predetermined starting and ending positions, the angular trajectories are usually very consistent with a distinctive pattern. This paper derives a set of equations that can describe the joint trajectories during a para-sagittal lifting task. Three optimal motion patterns were also expressed by the polynomials: minimal hand jerk, minimal center of gravity (CG) jerk, and minimal

  13. INSTRUMENTOS PARA EL DESARROLLO Y LA DINAMIZACIN DE CIUDADES Y ESPACIOS CON

    E-print Network

    Escolano, Francisco

    INSTRUMENTOS PARA EL DESARROLLO Y LA DINAMIZACIÓN DE CIUDADES Y ESPACIOS CON PATRIMONIO HISTÓRICO aplicación incluya todos los espacios naturales, las áreas urbanas, periurbanas y rurales así como el litoral interesantes beneficios económicos y socio-laborales a los espacios que se desarrollen en su sector, deben

  14. REGLAME TO PARA LA GESTI DE LOS ESPACIOS DE LA FACULTAD EXPOSICIN DE MOTIVOS

    E-print Network

    Escolano, Francisco

    REGLAME TO PARA LA GESTIÓ DE LOS ESPACIOS DE LA FACULTAD DE DERECHO EXPOSICIÓN DE MOTIVOS: Como es sabido, desde hace ya varios años, la Facultad de Derecho autogestiona sus propios espacios, con independencia del Servicio de Gestión de Espacios de la Universidad. Dicha gestión, que se lleva a cabo desde el

  15. Interrupting Commemoration: Thinking with Art, Thinking through the Strictures of Argentina's "Espacio para la memoria"

    ERIC Educational Resources Information Center

    Paolantonio, Mario Di

    2011-01-01

    Recently, a few buildings within the "Espacio para la memoria" in Buenos Aires have been designated as a UNESCO Centre where, amongst other educational activities, evidentiary materials of the past repression are to be stored and displayed. Another building in the complex houses a Community Centre operated by the Mothers of the Plaza de Mayo,…

  16. LA INFORMACIÓN CONTABLE Y SU INFLUENCIA EN LA TOMA DE DECISIONES PARA LA GESTIÓN EMPRESARIAL

    Microsoft Academic Search

    Malena Portal Boza

    2011-01-01

    El objetivo de este material es manifestar, revelar, que el análisis financiero apoyado en la información contable, constituye un conjunto de técnicas que nos permite tener una idea de los resultados de su gestión en un período determinado y enunciar que el análisis financiero es importante para la toma efectiva de decisiones financieras y administrativas; sin embargo esta herramienta no

  17. Construccin de un ndice de regionalizacin para el Sistema Nacional de Propiedad Industrial (SPI): una

    E-print Network

    Paris-Sud XI, Université de

    Construcción de un índice de regionalización para el Sistema Nacional de Propiedad Industrial (SPI Propiedad Industrial (SPI): una aproximación desde la metodología de componentes principales Jacobo Campo responsable del Sistema de Propiedad Industrial (SPI) en Colombia reconoce la importancia económica y

  18. Modelagem e Gerao de Sistema Operacional de Tempo Real para Sistemas Embarcados

    E-print Network

    Wagner, Flávio Rech

    the use of a target real-time application, called CRANE. Keywords: embedded systems, RTOS generation, real of reconfigurable embedded real-time operating systems (RERTOS) from a high level description of the target necessária a existência de um sistema operacional de tempo real (RTOS) para realizar os serviços de

  19. ENLACES DE INTERS PARA INFORMACIN Y BSQUEDA DE PRCTICAS EN EL EXTRANJERO (actualizado Marzo 2014)

    E-print Network

    Rey Juan Carlos, Universidad

    para búsqueda de Prácticas en Europa http://oportunidadeuropa.com/ - Página web especializada en la://cdn.crccasia.com/assets/CRCC-Asia-Brochure-2013.pdf #12;http://www.crccasia.com/es/ (página web en español) - Portal de Universia "Practica Erasmus" www.erasmus.universia.es - EURES.- Portal Europeo de Movilidad Profesional http://ec.europa.eu/eures/home.jsp

  20. INVESTIGACIÓN CIENTÍFICA E INVESTIGACIÓN TECNOLÓGICA COMO COMPONENTES PARA LA INNOVACIÓN: CONSIDERACIONES TÉCNICAS Y METODOLÓGICAS

    Microsoft Academic Search

    Idana Berosca Rincón Soto

    2011-01-01

    El presente artículo tiene por finalidad explicar las diferencias técnicas y metodológicas que existen entre investigación científica e investigación tecnológica, con el fin de proponer un modelo metodológico para la realización de proyectos de investigación en instituciones educativas, contribuyendo con un aporte en las dimensiones que están implícitas en tan complejo y amplio tema. La importancia de distinguir entre varios

  1. Mechanics Systems on Para-Kaehlerian Manifolds of Constant J-Sectional Curvature

    E-print Network

    Mehmet Tekkoyun

    2009-02-20

    The goal of this paper is to present Euler-Lagrange and Hamiltonian equations on R2n which is a model of para-Kaehlerian manifolds of constant J-sectional curvature. In conclusion, some differential geometrical and physical results on the related mechanic systems have been given.

  2. Long-range excitons in conjugated polymers with ring torsions: poly(para-phenylene) and polyaniline

    E-print Network

    Harigaya, Kikuo

    (Running head: Long-range excitons in conjugated polymers) Kikuo Harigaya Physical Science DivisionLong-range excitons in conjugated polymers with ring torsions: poly(para-phenylene) and polyaniline formalism. Long-range excitons are charac- terized, and the long-range component of the oscillator strengths

  3. Red GPS a Tiempo Real con Precisiones Centrimtricas para Utilizar en los Sistemas de

    E-print Network

    Gilbes, Fernando

    Red GPS a Tiempo Real con Precisiones Centrimétricas para Utilizar en los Sistemas de Información · GPS Reference Stations RED CORS del NGS en PR Magueyes CORS Site-PRMI #12;Concepto Desarrollo Tecnológico Instrumentación · GPS Internet Ready Red de GPS a tiempo Real en proceso Leica Spider Net en

  4. Factor Structure of the "Escala de Autoeficacia para la Depresion en Adolescentes" (EADA)

    ERIC Educational Resources Information Center

    Diaz-Santos, Mirella; Cumba-Aviles, Eduardo; Bernal, Guillermo; Rivera-Medina, Carmen

    2011-01-01

    The current concept and measures of self-efficacy for depression in adolescents do not consider developmental and cultural aspects essential to understand and assess this construct in Latino youth. We examined the factor structure of the "Escala de Autoeficacia para la Depresion en Adolescentes" (EADA), a Spanish instrument designed to assess this…

  5. SOLUC ~OES PARA CONTROLO VISUAL DE MOVIMENTO: APLICAC ~AO EM SEGUIMENTO

    E-print Network

    Barreto, Joao

    , movimento direita- esquerda tamb´em designado por "eye pan", e eleva¸c~ao, movimento cima- baixo tamb´emSOLUC¸ ~OES PARA CONTROLO VISUAL DE MOVIMENTO: APLICAC¸ ~AO EM SEGUIMENTO COM VIS~AO ACTIVA Provas . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.1 Seguimento com o Olho Cicl´opico . . . . . . . . . . . . 9 1.1.2 Seguimento em Verg

  6. Effect of the site of infusion of para-aminohippuric acid (PAH) on portal blood flow

    E-print Network

    Paris-Sud XI, Université de

    Effect of the site of infusion of para-aminohippuric acid (PAH) on portal blood flow LM Zeoula C requirements of animals. In this context, the determination of portal blood flow is critical. When dilution techniques are used for such measurements, eg using PAH, a homogeneous mixing of the marker in the blood

  7. MONITORAMENTO DOS NINHOS ARTIFICIAIS INSTALADOS PARA AS ARARAS-AZUIS (Anodorhynchus hyacinthinus)

    Microsoft Academic Search

    Rua Klaus Sturk; Jd Mansur; Neiva Maria; R. Guedes; Torborg Berge; Vanessa M. B; Márcia M. Volpe; Carolina Ribas; Arara Azul

    Ameaçada de extinção e com baixa taxa reprodutiva, um dos fatores limitantes à reprodução da arara-azul Anodorhynchus hyacinthinus, no Pantanal é a escassez de cavidades em árvores. Além disso, no mesmo período de reprodução das araras-azuis outras espécies de aves estão se reproduzindo e a disputa pelos ninhos é grande. Para minimizar este fator, instalamos 70 ninhos artificiais, no período

  8. Incidence of para-aortic and pelvic lymph node metastases in epithelial carcinoma of the ovary.

    PubMed

    Chen, S S; Lee, L

    1983-08-01

    In patients with ovarian carcinoma, the presence of metastatic disease in a retroperitoneal lymph node is indicative of a poor prognosis. Although a "staging laparotomy" is required for proper treatment, definitive information concerning para-aortic and pelvic lymph node metastasis often is not available. To determine the incidence of retroperitoneal lymph node metastases in untreated cases of ovarian carcinoma, a prospective study by selective nodal biopsy was undertaken in 61 unselected patients with the following distribution: Stage I, 11; Stage II, 10; Stage III, 31; and Stage IV, 9. The incidence of para-aortic node metastasis overall was 37.7% and of pelvic node metastasis, 14.8%. Of 23 patients with positive para-aortic nodes, 30.4% had no concomitant pelvic node involvement. Direct relationships between nodal metastasis and clinical stage, tumor grade, and histologic type of tumor were demonstrated. The incidence of positive para-aortic nodes in Stage I disease was 18.2%; in Stage II, 20.0%; in Stage III, 41.9%; and in Stage IV, 66.7%. The corresponding incidence of pelvic node metastasis was 9.1% in Stage I, 10.0% in Stage II, 12.9% in Stage III, and 33.3% in Stage IV. Grade 3 tumors were associated most frequently with nodal involvement, with an incidence of positive para-aortic nodes of 52.5% and of positive pelvic nodes of 15.5%. In patients with a serous type of malignancy, the frequencies of positive para-aortic/pelvic nodes were 44.4%/16.7%, respectively; in the undifferentiated type, 50.0%/10.0%; in the clear cell type, 25.0%/25.0%; and in the mucinous type, 14.3%/14.3%. In this small series, 32 patients (52.5%) had positive retroperitoneal nodal involvement. It is concluded that selective biopsies of the para-aortic and pelvic lymph nodes should be part of any "staging laparotomy" for ovarian carcinoma, and that the true incidence of nodal involvement in these patients awaits further investigation. PMID:6884834

  9. Ancient origins of axial patterning genes: Hox genes and ParaHox genes in the Cnidaria.

    PubMed

    Finnerty, J R; Martindale, M Q

    1999-01-01

    Among the bilaterally symmetrical, triploblastic animals (the Bilateria), a conserved set of developmental regulatory genes are known to function in patterning the anterior-posterior (AP) axis. This set includes the well-studied Hox cluster genes, and the recently described genes of the ParaHox cluster, which is believed to be the evolutionary sister of the Hox cluster (Brooke et al. 1998). The conserved role of these axial patterning genes in animals as diverse as frogs and flies is believed to reflect an underlying homology (i.e., all bilaterians derive from a common ancestor which possessed an AP axis and the developmental mechanisms responsible for patterning the axis). However, the origin and early evolution of Hox genes and ParaHox genes remain obscure. Repeated attempts have been made to reconstruct the early evolution of Hox genes by analyzing data from the triphoblastic animals, the Bilateria (Schubert et al. 1993; Zhang and Nei 1996). A more precise dating of Hox origins has been elusive due to a lack of sufficient information from outgroup taxa such as the phylum Cnidaria (corals, hydras, jellyfishes, and sea anemones). In combination with outgroup taxa, another potential source of information about Hox origins is outgroup genes (e.g., the genes of the ParaHox cluster). In this article, we present cDNA sequences of two Hox-like genes (anthox2 and anthox6) from the sea anemone, Nematostella vectensis. Phylogenetic analysis indicates that anthox2 (= Cnox2) is homologous to the GSX class of ParaHox genes, and anthox6 is homologous to the anterior class of Hox genes. Therefore, the origin of Hox genes and ParaHox genes occurred prior to the evolutionary split between the Cnidaria and the Bilateria and predated the evolution of the anterior-posterior axis of bilaterian animals. Our analysis also suggests that the central Hox class was invented in the bilaterian lineage, subsequent to their split from the Cnidaria. PMID:11324016

  10. In para totale...una cosa da panico...sulla lingua dei giovani in Italia (In para totale...una cosa da panico...The Language of Young People in Italy).

    ERIC Educational Resources Information Center

    Marcato, Carla

    1997-01-01

    Describes and analyzes the language of young people in Italy today. Particular focus is on the expressions using "para" (e.g., "in para totale" = to be very bored or worried) and the phrase "una cosa da panico" (something terrible or its opposite something wonderful). (CFM)

  11. Aplicaciones de los Estándares Educativos a los Sistemas Virtua- les de Formación Colaborativos: Especificaciones para la Herra- mienta LAMS

    Microsoft Academic Search

    Luisa María Romero Moreno

    Resumen Dado el incremento de los campus virtuales en la mayoría de Universidades e Instituciones, así como del uso de eLearning en el ámbito de las empresas, se hace necesario un esfuerzo de planificación para que el uso de las TIC's aporte todo su potencial a los sistemas virtuales de forma- ción. Para ello los llamados estándares de tecnología edu-

  12. Pol ticas de Hand-o com Balanceamento de Carga para Computa c~ao A. Santiago, A. Goldman

    E-print Network

    Goldman, Alfredo

    #19;adio atrav#19;es de Esta#24;c~oes R#19;adio Bases (ERBs). As quais de- vem estar espacialmente sofrem com o limite de espectro de frequ^encias dispon#19;#16;vel para canais de r#19;adio, este simultaneamente. Nestes sistemas os canais de r#19;adio s~ao os recursos primordiais para estabelecer a conex

  13. EVALUATION OF PARA-DICHLOROBENZENE EMISSIONS FROM SOLID MOTH REPELLANT AS A SOURCE OF INDOOR AIR POLLUTION

    EPA Science Inventory

    Mothcakes made of para-dichlorobenzene have been widely available for the general population to be used as a moth repellant to protect garments from insect damage. Usually, a mothcake is expected to last for weeks or even months during which the para-dichlorobenzene emits slowly ...

  14. Windows Live Groups le permite crear hasta 20 pginas de colaboracin para trabajar en conjunto con sus

    E-print Network

    Islas, León

    académica. 1. Comparta y edite archivos. Suba, organice, almacene y edite archivos y fotos para que todos calendario, archivos y carpetas desde donde se encuentre. Utilice cualquier navegador para subir fotos al archivos y fotos podrá decidir si los miembros solamente tienen la posibilidad de descargar los archivos

  15. Mrcia Barbosa posa com seu prmio, o L'Oral-Unesco para Mulheres na Cincia. (Foto: Divulgao)

    E-print Network

    Barbosa, Marcia C. B.

    Márcia Barbosa posa com seu prêmio, o L'Oréal-Unesco para Mulheres na Ciência. (Foto: Divulgação) Márcia Barbosa posa com seu prêmio, o L'Oréal-Unesco para Mulheres na Ciência. (Foto: Divulgação) Márcia. (Foto: Reprodução) Márcia Barbosa tem estudo de sucesso sobre molécula de água e DNA. (Foto: Reprodução

  16. Um Modelo Conceitual Compatvel com a Plataforma EDUCOM/IMS para Comparao de Ambientes de Educao na

    E-print Network

    Fontoura, Marcus F.

    Um Modelo Conceitual Compatível com a Plataforma EDUCOM/IMS para Comparação de Ambientes de entre varios ambientes existentes. O modelo conceitual proposto é compatível com a plataforma EDUCOM existir uma plataforma comum para o aprendizado na Internet. Este tipo de estrutura é proposto pelo

  17. MorphTrans: un lenguaje y un compilador para especi car y generar m odulos de transferencia

    E-print Network

    Forcada, Mikel L.

    MorphTrans: un lenguaje y un compilador para especi#12;car y generar m#19;odulos de transferencia, Spain. http://www.internostrum.com Resumen Este art#19;#16;culo presenta un len- guaje para especi#12;car las reglas de un m#19;odulo de transferencia morf#19;ologica pa- ra un sistema de traducci#19;on

  18. Su "Derecho a Saber" es el trmino genrico que describe los derechos legales de un empleado para obtener

    E-print Network

    Rubloff, Gary W.

    Su "Derecho a Saber" es el término genérico que describe los derechos legales de un empleado para.405.3960 · FA X : 301.314.9294 Su Derecho a Saber Department of Environmental Safety Division of Administrative Derecho a Saber" a través del correo del campus. Este folleto contiene toda la información necesaria para

  19. fGrin: um framework baseado em sistemas multi-agentes para formao de grupos de interesse a partir

    E-print Network

    Endler, Markus

    a massificação de compras on-line em relacionamentos business to business e business to consumer (Bailey e Bakos a contribuição individual de cada membro do grupo para o sucesso e evolução da educação neste tipo de ambiente prática permite agrupar consumidores para uma compra, respondendo assim às suas necessidades. No âmbito

  20. Todos los clientes no son iguales: una perspectiva financiera sobre servicio al cliente para los gerentes de mercadeo

    Microsoft Academic Search

    Harold Lee Koch

    1999-01-01

    Los gerentes colombianos estamos pensando en Servicio al Cliente como la próxima ventaja competitiva y una ayuda para contrarrestar los efectos de la recesión actual. Estamos cansados de buscar siempre en nuestra caja de herramientas de mercadeo y encontrar solamente el martillo del precio. Para diferenciamos de la competencia, hacerle al cliente menos sensible una diferencia en precio y encontrar

  1. GENÉTICA E MELHORAMENTO DE PLANTAS POTENCIAL DE LINHAGENS DE POPULAÇÕES LOCAIS DE MILHO PIPOCA PARA SÍNTESE DE HÍBRIDOS(1)

    Microsoft Academic Search

    EDUARDO SAWAZAKI; MARIA ELISA A. G. ZAGATTO; JAIRO LOPES DE CASTRO; PAULO BOLLER GALLO; J OÃO; CARLOS CARDOSO; LUIZ ALBERTO SAES

    Médias dos principais caracteres agronômicos de top crosses foram utilizadas para avaliação do potencial de 82 linhagens da variedade de milho pipoca Guarani e 27 da variedade IAC-64 para síntese de híbridos, utilizando-se como testador um híbrido simples de linhagens da variedade South American Mushroom (SAM). Os top crosses foram distribuídos nos experimentos I, II e III, sendo desenvolvidos em

  2. Series enlazadas de empleo y VAB para España, 1955-2010 (RegDat_Nac versión 3.0)

    Microsoft Academic Search

    Angel de la Fuente

    2012-01-01

    En este trabajo se elaboran series de distintos agregados de empleo y de VAB a precios corrientes y constantes para el conjunto de España durante el período 1955-2010. Las series se construyen mediante el enlace de diversas bases de la CNE y de la Contabilidad Trimestral, introduciéndose también una corrección tentativa para reconciliar las series de empleo de la CNE

  3. SIADEX. Un entorno integral de planificacion para el dise~no de planes de actuacion en situaciones de crisis*

    E-print Network

    Fernández Olivares, Juan

    ayuda a la toma de decisiones durante el desarrollo de situaciones de crisis, en particular, duran- te para la toma de decisiones y la posterior ela- boraci´on de los planes de operaciones para la extinci decisiones durante el di- se~no del plan, el t´ecnico de extinci´on debe de tener en cuenta una gran cantidad

  4. Auto-Certificacin de Personas Sustitutas que Toman Decisiones Para la Participacin en Investigacin en la Universidad de California

    E-print Network

    Loudon, Catherine

    toma decisiones por (Participante en la investigación) para participar en (Título del Proyecto deAuto-Certificación de Personas Sustitutas que Toman Decisiones Para la Participación en decisiones relacionadas a la salud por el/la participante en la investigación. 3. Cónyuge de el

  5. DESARROLLO DE UN SISTEMA DE INFORMACIÓN GEOGRÁFICO COMO APOYO PARA LA ADMINISTRACIÓN DE LA PESCA ARTESANAL EN MÉXICO

    Microsoft Academic Search

    Mauricio Ramírez Rodríguez; César López Ferreira; Agustín Hernández Herrera

    RESUMEN.- Con el fin de generar información útil para la toma de decisiones sobre la administración de pesquerías artesanales en México se está desarrollando un Sistema de Información Geográfica (SIG) que utiliza los registros oficiales de captura por especie o grupo de especies por lugar de pesca o desembarco. Se inició con la elaboración de atlas de localidades pesquera para

  6. Convocatoria La Universidad de Granma (UDG), en coordinacin con el Programa de las Naciones Unidas para el

    E-print Network

    Islas, León

    la cooperación internacional para el desarrollo local sostenible y los objetivos del milenio. 2. Los actores de la cooperación internacional y la gestión de proyectos para el desarrollo local sostenible. 3 desarrollo local sostenible. Redes, iniciativas y alianzas. Movilidad estudiantil y académica. Becarios

  7. EL MODELO RANDOM PARAMETER LOGIT PARA ESTIMAR LA ELECCIÓN DE PROVEEDOR DE SERVICIOS DE SALUD EN BOLIVIA

    Microsoft Academic Search

    JOSÉ ANTONIO CANAVIRI

    RESUMEN En este artículo se estima un método econométrico para estimar la elección de proveedores de servicios de salud en Bolivia a través de un modelo Random Parameter Logit (RPL) usando la base de datos MECOVI durante el período 1999 y 2000. De acuerdo a nuestra información esta es la primera vez que se usa el modelo RPL para modelar

  8. Indicadores de riesgo de desastre y de gestión de riesgos: Programa para América Latina y el Caribe: Informe resumido

    Microsoft Academic Search

    Banco Interamericano de Desarrollo

    2010-01-01

    Este informe resume los resultados de la aplicación y la actualización de los indicadores de riesgo de desastres y gestión de riesgos del BID para los países miembros prestatarios. Los cuatro indicadores miden la capacidad económica que tiene un país para recuperarse de una catástrofe; la susceptibilidad debido a la infraestructura y a las personas expuestas; el riesgo social y

  9. Indicadores de riesgo de desastre y de gestión de riesgos: Programa para América Latina y el Caribe: Uruguay

    Microsoft Academic Search

    Banco Interamericano de Desarrollo

    2012-01-01

    Este informe presenta los resultados de la aplicación y la actualización de los indicadores de riesgo de desastres y gestión de riesgos del BID para Uruguay. Los indicadores miden la capacidad económica que tiene un país para recuperarse de una catástrofe; la susceptibilidad debido a la infraestructura y a las personas expuestas; el riesgo social y medioambiental asociado a los

  10. Estrategias e instrumentos financieros para la gestión del riesgo de desastres en América Latina y el Caribe

    Microsoft Academic Search

    Stuart Miller; Kari Keipi

    2006-01-01

    El presente documento investiga las posibles medidas que se pueden aplicar para reducir las pérdidas económicas resultantes de las amenazas naturales, y analiza los temas ex ante y ex post que afectan la gestión del riesgo de desastres. También evalúa de qué modo se pueden utilizar conjuntamente ambos tipos de medidas para reducir el impacto económico de los desastres en

  11. Una metodología para la resolución de problemas geométricos mediante el software educativo “elementos matemáticos” en la secundaria básica

    Microsoft Academic Search

    Liuska Martínez Noris; Osmany Carmenates Barrios

    2011-01-01

    En la Tercera Revolución Educacional de la Revolución Cubana se hace necesario introducir una nueva metodología que potencie la resolución de problemas geométricos mediante el uso de los Software Educativo. Se aplicó una metodología para el software “Elementos Matemáticos” de la Colección El Navegante de la Secundaria Básica. La misma tiene como propósito que sirva fundamentalmente de guía orientadora para

  12. Problemas de Topologia (Hoja 1) 1. Sea {(X, ), A} una familia arbitraria de espacios topologicos. Si para cada

    E-print Network

    Martín Peinador, Elena

    Problemas de Topolog´ia (Hoja 1) 25-II-08 1. Sea {(X, ), A} una familia arbitraria de espacios} una familia arbitraria de espacios topol´ogicos. y sea M X para cada A. En el producto A M se espacio producto. a) Si () X es un punto fijo, y H := (x) A X tal que x = , para casi todo , hallar la

  13. Characterization of the axon initial segment (AIS) of motor neurons and identification of a para-AIS

    E-print Network

    Paris-Sud XI, Université de

    Characterization of the axon initial segment (AIS) of motor neurons and identification of a para-AIS and a juxtapara-AIS, organized by protein 4.1B Duflocq et al. Duflocq et al. BMC Biology 2011, 9:66 http initial segment (AIS) of motor neurons and identification of a para-AIS and a juxtapara-AIS, organized

  14. Frustum Culling Hibrido em CPU e GPU para Visualizac~ao de Modelos Massivos em Tempo Real

    E-print Network

    Barbosa, Alberto

    ´etrica de mode- los 3D para sua visualizac¸~ao. Com o advento da GPGPU (General-Purpose computation to re- duce the geometric complexity of 3D models for visualiza- tion. GPGPU (General~ao processadores origi- nalmente dedicados para c´alculos gr´aficos e s~ao altamente paralelizados. Nos ´ultimos

  15. Saturn’s Tropospheric Temperatures and Para-Hydrogen Distribution from Ten Years of Cassini Observations

    NASA Astrophysics Data System (ADS)

    Fletcher, Leigh N.; Irwin, Patrick G.; Sinclair, James; Giles, Rohini; Barstow, Joanna; Achterberg, Richard K.; Orton, Glenn S.

    2014-11-01

    Cassini/CIRS observations of Saturn’s 10-1400 cm-1 spectrum have been inverted to construct a global record of tropospheric temperature and para-hydrogen variability over the ten-year span of the Cassini mission. The data record the slow reversal of seasonal asymmetries in tropospheric conditions from northern winter (2004, Ls=293), through northern spring equinox (2009, Ls=0) to the present day (2014, Ls=60). Mid-latitude tropospheric temperatures have cooled by approximately 4-6 K in the south and warmed by 2-4 K in the north, with the seasonal contrast decreasing with depth. CIRS detected the north polar minimum 100-mbar temperatures 6-8 years after winter solstice, whereas the south polar maximum occurred 1-2 years after summer solstice, consistent with the lag times predicted by radiative equilibrium models. Warm polar cyclones and the northern hexagon persist throughout the mission, suggesting that they are permanent features of Saturn’s tropospheric circulation. The 200-mbar thermal enhancement (“knee”) that was strongest in the summer but weak or absent in winter in 2004-2006 (Fletcher et al., 2007, Icarus 189, p.457-478) has now shifted northward and is present globally in 2014, suggestive of radiative heating in Saturn’s tropospheric haze layer. Saturn’s para-H2 fraction, which serves as a tracer of both tropospheric mixing and the efficiency of re-equilibration between the ortho- and para-hydrogen states, is slowly altering: super-equilibrium conditions (para-H2 fraction exceeding equilibrium expectations and suggestive of subsiding airmasses) that dominated the southern summer hemisphere are now weakening, whereas the sub-equilibrium conditions (suggestive of uplift) of the northern winter are being replaced by equilibrium or super-equilibrium conditions in spring. The thermal ‘knee’ and the para-H2 distribution are tracking both the increased spring illumination and the increasing tropospheric haze opacity of the springtime hemisphere observed via colour changes in visible light, suggesting a close connection between the tropospheric temperatures, para-H2 and haze characteristics.

  16. Copolymers containing meta-pyridylvinylene and para-arylenevinylene fragments: synthesis, quaternization reaction, and photophysical properties

    NASA Astrophysics Data System (ADS)

    Barashkov, Nikolay N.; Olivos, Hernando J.; Ferraris, John P.

    1997-12-01

    We report the Wittig reaction of the diphosphonium salt of 2,6-bis(chloromethyl)pyridine with terephthaldehyde, 2.5- dioctyloxyterephthaldehyde, or 9,10-anthracenedicarbaldehyde to form conjugated copolymers with fragments of 2,6 - pyridylene and para-arylenevinylene. The protonation reaction of poly(para-arylenevinylene)-co-(meta- pyridylvinylene) with hydrochloric acid and the quaternization reaction of poly(2,5-dioctyloxy-1,4- phenylenevinylene)-co-(2,6-pyridylvinylene) with methyl triflate have been investigated by spectrophotometric and fluorescent methods. The absorption, excitation and fluorescence spectra of these copolymers as well as their corresponding model compounds were studied and compared. The photophysical properties of the investigated polymers suggest that these materials could be good candidates for the fabrication of efficient blue and green light-emitting diodes.

  17. Renormalization-group approach for para-hydrogen adsorbed on exfoliated graphite

    NASA Astrophysics Data System (ADS)

    Mello, E. V. L.; Carneiro, G. M.

    1986-04-01

    Heat-capacity measurements of para-hydrogen adsorbed on graphite were performed recently and revealed an interesting phase diagram similar to 4He. We report a renormalization-group study based on a three-state Potts model with vacancies which approximates the experimental situation. The resulting global phase diagram is in a three parameter space of pair-interaction constants and chemical potential as studied by Berker, Ostlund and Putnam. The Lennard-Jones or other effective potential between the para-H 2 adsorbed molecules determines the subspace relevant to this adsorbate. A method to calculate thermodynamic densities is discussed and the resulting temperature versus density diagram agrees well with the experiment.

  18. Incentivos para atraer y retener personal de salud de zonas rurales del Perú: un estudio cualitativo

    PubMed Central

    Huicho, Luis; Canseco, Francisco Díez; Lema, Claudia; Miranda, J. Jaime; Lescano, Andrés G.

    2014-01-01

    El objetivo fue identificar incentivos de atracción y retención en zonas rurales y distantes de Ayacucho, Perú. Fueron realizadas entrevistas en profundidad con 80 médicos, enfermeras, obstetras y técnicos (20 por grupo) de las zonas más pobres y con 11 funcionarios. No existen políticas sistemáticas de atracción y retención de personal de salud en Ayacucho. Los principales incentivos, en orden de importancia, fueron mejoras salariales, oportunidades de formación y capacitación, estabilidad laboral y nombramiento, mejoras en infraestructura y equipos, e incremento del personal. Se mencionaron también mejoras en la vivienda y alimentación, mayor cercanía con la familia y reconocimiento por el sistema de salud. Existen coincidencias y singularidades entre los distintos grupos sobre los incentivos clave para estimular el trabajo rural, que deben considerarse al diseñar políticas públicas. Las iniciativas del Estado deben comprender procesos rigurosos de monitoreo y evaluación, para asegurar que las mismas tengan el impacto deseado. PMID:22488318

  19. Regioselective Enzymatic ?-Carboxylation of para-Hydroxy- styrene Derivatives Catalyzed by Phenolic Acid Decarboxylases

    PubMed Central

    Wuensch, Christiane; Pavkov-Keller, Tea; Steinkellner, Georg; Gross, Johannes; Fuchs, Michael; Hromic, Altijana; Lyskowski, Andrzej; Fauland, Kerstin; Gruber, Karl; Glueck, Silvia M; Faber, Kurt

    2015-01-01

    We report on a ‘green’ method for the utilization of carbon dioxide as C1 unit for the regioselective synthesis of (E)-cinnamic acids via regioselective enzymatic carboxylation of para-hydroxystyrenes. Phenolic acid decarboxylases from bacterial sources catalyzed the ?-carboxylation of para-hydroxystyrene derivatives with excellent regio- and (E/Z)-stereoselectivity by exclusively acting at the ?-carbon atom of the C=C side chain to furnish the corresponding (E)-cinnamic acid derivatives in up to 40% conversion at the expense of bicarbonate as carbon dioxide source. Studies on the substrate scope of this strategy are presented and a catalytic mechanism is proposed based on molecular modelling studies supported by mutagenesis of amino acid residues in the active site. PMID:26190963

  20. Desarrollo de un receptor polarimétrico en banda S para aplicación en estudios radioastronómicos

    NASA Astrophysics Data System (ADS)

    Barberis, C. M.; Bava, J. A.; Sanz, A. J.

    Desde el punto de vista tecnológico, el objetivo principal de este proyecto es desarrollar un cabezal de receptor en la frecuencia de 3.3 GHz, con una temperatura del sistema de 60 K y un ancho de banda de 140 MHz. El mismo será instalado en el foco primario de un reflector parabólico de 30 metros de diámetro que funcionará como radiómetro en el IAR. El receptor es del tipo polarimétrico, con lo cual permite la posibilidad de obtener las componentes de polarización lineal y circular. Para tal fin el cabezal constará de dos ramas receptoras que amplificarán la señal y la trasladarán a una frecuencia menor, (frecuencia intermedia), permitiendo de esa forma un mejor transporte de la señal a la sala de control para su posterior procesamiento. El receptor, además de tener características polarimétricas, podrá ser usado en el contínuo y en la línea, utilizando las ventajas observacionales y de procesamiento de señal que actualmente posee el IAR.

  1. Contribuição dos fatores de risco psicossociais para o transtorno de déficit de atenção\\/hiperatividade

    Microsoft Academic Search

    Marcio M. Vasconcelos; Ana Flávia de A. Malheiros; Jairo Werner Jr.; Adriana R. Brito; Jane Bardawil Barbosa; Ítalo S. Oliveira Santos; Daniel Fampa N. Lima

    2005-01-01

    RESUMO - Objetivo: Analisar a contribuição dos fatores psicossociais para a ocorrência do transtorno de déficit de atenção\\/hiperatividade (TDAH).M é t o d o:Este é um estudo retrospectivo de casos-controles que analisou 403 alunos de uma escola pública primária. Preencheram-se o questionário de sintomas do DSM- IV e um questionário psicossocial específico e realizaram-se anamnese e exames físico e neurológico

  2. Stable self-trapping and ring formation in polydiacetylene para-toluene sulfonate

    NASA Astrophysics Data System (ADS)

    Wright, Ewan M.; Lawrence, Brian L.; Torruellas, William; Stegeman, George

    1995-12-01

    Numerical simulations of two-dimensional beam propagation in polydiacetylene para-toluene sulfonate measured values for n2>0 and n3<0 , where Delta n=n2I+n 3I2 , predict stable self-trapping and a new phenomenon in which a spatial ring evolves from a Gaussian input beam. We interpret the numerical results theoretically, using the variational model of nonlinear Gaussian beam propagation.

  3. Projeto do sistema anti-ressonante da fiação dos transdutores para o detector Mario Schenberg

    NASA Astrophysics Data System (ADS)

    Vieira, S. J.., Jr.; Melo, J. L.

    2003-08-01

    O detector de ondas gravitacionais Mario Schenberg está sendo projetado e construído pelo grupo Gráviton. Sua construção está ocorrendo no Laboratório de Estado Sólido e Baixas Temperaturas (LESBT) da Universidade de São Paulo, na cidade de São Paulo. Esse detector possui uma massa ressonante esférica de cobre-alumínio, com 65 cm de diâmetro, pesando aproximadamente 1150 Kg, suspensa por um sistema de isolamento vibracional, que se encontra em fase de testes preliminares. A real eficácia desse sistema, entretanto, só poderá ser comprovada quando o detector estiver aparelhado com, pelo menos, um transdutor eletromecânico de altíssima sensibilidade acoplado à massa ressonante. Neste momento, não só este sistema de isolamento vibracional será posto em teste, como o do projeto da fiação que transporta os sinais de microondas até os transdutores e destes para a pré-amplificação. Apesar dessa fiação ter sido projetada para não apresentar nenhum contato com a superfície esférica da antena, de maneira a não haver nenhuma transmissão de ruído vibracional do laboratório para esta, deve-se minimizar o ruído microfônico produzido nessa fiação por oscilações mecânicas, uma vez que ela não utiliza nenhum sistema de isolamento vibracional. Com o intuito de resolver este problema, projetamos uma estrutura, formada por pequenos cilindros conectados por barras, a qual não terá nenhuma ressonância mecânica na faixa de freqüências de interesse para detecção (3000 - 3400 Hz). Desta forma, as vibrações nessa faixa não serão amplificadas. O projeto foi feito usando iterativamente, de maneira a otimizar os resultados obtidos, o programa de elementos finitos Msc/Nastran. Através de simulações feitas neste programa, determinamos os parâmetros geométricos ideais a serem utilizados, os quais proporcionam a maior região espectral de interesse livre de ressonâncias.

  4. Change in the mechanical properties of para-aramid fibres in thermal aging

    Microsoft Academic Search

    K. E. Perepelkin; I. V. Andreeva; G. P. Meshcheryakova; I. Yu. Morgoeva

    2006-01-01

    The change in the mechanical properties of high-strength, high-modulus carbocyclic and heterocyclic para-aramids exposed to\\u000a high (250, 275, 300C) temperatures for up to 100 h was investigated. It was found that the change in the strength characteristics\\u000a and elongation at break after prolonged thermal effects is diminishing in character. A small increase in the elongation, probably\\u000a caused by predominance of

  5. ARQUITETURA BASEADA EM VECULOS AREOS NO TRIPULADOS E REDES DE SENSORES PARA APLICAES

    E-print Network

    Braun, Torsten

    ARQUITETURA BASEADA EM VEÍCULOS A�REOS N�O TRIPULADOS E REDES DE SENSORES PARA APLICA��ES AGRÍCOLAS: A aplicação de defensivos químicos em áreas agrícolas é de primordial importância no rendimento de lavouras. O uso de aeronaves é cada vez mais comum em tal tarefa principalmente pelo fato de aumentar a agilidade

  6. IHC2010 Anais Estendidos WEIHC Desafios para Programas de Mestrado em Interao

    E-print Network

    Winckler, Marco Antonio Alba

    IHC2010 ­ Anais Estendidos WEIHC 71 Desafios para Programas de Mestrado em Interação Humano em Ciência da Computação (e áreas afins) inclui a Interação Humano- Computador (IHC) no programa de ensino, seja como disciplinas específicas, optativas ou tópicos avançados tratados em disciplinas

  7. Abierto el plazo de presentacin de propuestas para la Semana de la Ciencia 2012

    E-print Network

    Abierto el plazo de presentación de propuestas para la Semana de la Ciencia 2012 Un año más, bajo el lema Ven a la Ciencia, el Área de Cultura Científica de la OTRI-UCM se va a encargar de la coordinación de las propuestas de actividades que ofrecerá nuestra Universidad durante la Semana de la Ciencia

  8. Kinetic decomposition of ozone and para-chlorobenzoic acid ( pCBA) during catalytic ozonation

    Microsoft Academic Search

    Jong-Sup Park; Heechul Choi; Jaewon Cho

    2004-01-01

    The decomposition of ozone and para-chlorobezoic acid (pCBA) using ozone and ozone\\/goethite were investigated under various conditions to define the characteristics of ozonation and catalytic ozonation. A continuous analysis of the kinetics of the reaction between ozone and pCBA was established, and the decay rate of ozone and pCBA with\\/without goethite was determined. The decay rate of ozone in the

  9. Iodine(III)-Mediated para-Selective Direct Imidation of Anilides.

    PubMed

    Pialat, Amélie; Bergès, Julien; Sabourin, Axel; Vinck, Robin; Liégault, Benoît; Taillefer, Marc

    2015-07-01

    The direct, nucleophilic imidation of acetanilide derivatives has been performed under mild, iodine(III)-mediated or -catalyzed conditions, employing lithium triflimide as the nitrogen source. The reaction exhibits exclusive regioselectivity for the para position and shows a good tolerance for varied functional groups at both the ortho or meta positions. Preliminary mechanistic data suggest that the LiNTf2 reagent plays a key role in the reactivity. PMID:26095155

  10. Preparation and antibacterial activity of Schiff bases from O -carboxymethyl chitosan and para -substituted benzaldehydes

    Microsoft Academic Search

    Xueqiong YinJunhua; Junhua Chen; Wen Yuan; Qiang Lin; Li Ji; Fang Liu

    Seven Schiff bases were synthesized from O-carboxymethyl chitosan (CMC) and para-substituted benzaldehydes. The Schiff bases were characterized through Fourier Transform Infrared Spectroscopy, Carbon-13\\u000a Nuclear Magnetic Resonance (13C NMR), Distortionless Enhancement of Polarization Transfer (DEPT) 135 NMR, elemental analysis, and acid–base titration. Antibacterial\\u000a activities of the Schiff bases against Escherichia coli (E. coli, ATCC 35218) and Staphylococcus aureus (S. aureus, ATCC

  11. Curso: Modelizacion y simulacion matematica de sistemas Metodologia para su implementacion computacional

    E-print Network

    Figueira, Santiago

    sistemas Escuela Complutense Latinoamericana 4 / 15 #12;Tratando de tener m´as realidad en los modelos de tener m´as realidad en los modelos Difusi´on 2D Sistema de ecuaciones El sistema es: u t = D Curso: Modelizaci´on y simulaci´on matem´atica de sistemas Metodolog´ia para su implementaci

  12. New High Temperature Lithium Para-Toluene Sulfonate (LIPTSA) Salt for Rechargeable Batteries

    Microsoft Academic Search

    Sreejith K R; Akhil Kumar Sen

    2012-01-01

    Lithium para-toluene sulfonate [LIPTSA] was used for lithium rechargeable batteries, with poly(methyl methacrylate) [PMMA] as the base material. Tri block copolymer of PEO-PPO-PEO was used to increase the solubility of lithium salts in PMMA matrix. FTIR, TGA, XRD, Impedance spectroscopy & SEM were used for characterizations and morphological studies. LIPTSA salt is stable up to 375°C. The highest room temperature

  13. Mechanism study of N-dephenylation mediated through a N-para-hydroxy metabolite.

    PubMed

    Wang, Jianyao; DeMaio, William; Chandrasekaran, Appavu; Shen, Li; Bach, Alvin C; Scatina, JoAnn; Talaat, Rasmy

    2006-06-01

    A P450 catalyzed N-para-hydroxy metabolite was suggested to be a prerequisite for N-dephenylation occurrence. Although two mechanisms have been proposed to describe this process as a consequence of either a chemical degradation or P450 lead epoxidation of the hydroxy metabolite, direct evidence has not been demonstrated. In this study, we started with a novel technique using a dipeptide, Lys-Phe, to trap the byproduct of N-dephenylation, a quinone-like compound, forming a peptide adduct to facilitate LC/MS characterization. N-dephenylation via chemical degradation was assessed by LC/MS characterization of the resulting (Lys-Phe)(2)-quinone from 4-hydroxyphenyl-2-naphthylamine following interaction with Lys-Phe in pH 7.4 buffer. N-dephenylation mediated by P450 catalysis proposed was investigated in N-para-hydroxy benzodioxane derivative incubated with mouse liver microsomes in the presence of Lys-Phe in 50/50 H(2)(16)O/H(2)(18)O. LC/MS demonstrated that only one of two hydroxy oxygens in the byproduct was exchanged with water and the MS signal intensity of the (16)O labeled peptide adduct was equal to that of (18)O labeled. These observations suggested us that the origin of the oxygen in the byproduct was from water only, not from O(2). Therefore, it appears that N-dephenylation occurs via a stepwise process, namely the substrate is initially metabolized to a N-para-hydroxy metabolite by P450, which was readily oxidized to a quinone imine/iminium chemically or enzymatically, then hydrolyzed resulting in N-dephenylation. However, in our studies, the proposed P450 mechanism involving epoxidation of a N-para-hydroxy metabolite was disproved. PMID:16925518

  14. Notas para un curso de introduccion a la Teoria de Numeros

    E-print Network

    Bor, Gil

    Notas para un curso de introducci´on a la Teor´ia de N´umeros Gil Bor, Centro de Investigaci´on en Matem´aticas (CIMAT) Guanajuato, M´exico ´Indice Prefacio 2 1. Conceptos b´asicos 3 1.1. Divisibilidad junio del 2006 CIMAT, Guanajuato. 2 #12;1. Conceptos b´asicos 1.1. Divisibilidad de enteros Los n

  15. Induction of Prophage SPO2 in Bacillus subtilis by 6-(para)-Hydroxyphenylazouracil

    PubMed Central

    Arwert, Fré; Rutberg, Lars

    1974-01-01

    DNA replication in Bacillus subtilis is reversibly inhibited by 6-(para)-hydroxyphenylazouracil (HpUra) (1971), whereas replication of temperature phage SPO2 is not affected by the drug. Experiments are presented which show that HpUra will induce bacteria lysogenic for SPO2. Also, prophage ?105, which is sensitive to the drug, is induced by HpUra. Induction of SPO2 lysogenics in the presence of HpUra gives selective synthesis of SPO2 DNA. PMID:4214948

  16. Trasgo: Sistema en tiempo de ejecucion para codigo paralelo abstracto y portable

    E-print Network

    Llanos, Diego R.

    Trasgo: Sistema en tiempo de ejecuci´on para c´odigo paralelo abstracto y portable Arturo Gonzalez a tiempo de ejecuci´on. El lenguaje de entrada es un lenguaje de coordinaci´on expl´icitamente paralelo d depurar de forma f´acil, e independientemente de los detalles de la m´aquina d´onde se va a ejecutar la

  17. CAPBL: Una herramienta pedagogica computacional para la ensenanza de la Geometr´ia en secundaria

    Microsoft Academic Search

    Ismael Morales Garay

    Se propone una herramienta computacional para la ensenanza de la geometr´ia en secundaria llamada CAPBL (Computer Assisted Problem-Based Learning), la cual esta basada en un sistema de instruccion llamado PBL (Problem-Based Learning). La herramienta propuesta se compone de un metodo de trabajo que se utiliza en la aplicacion directa de la herramienta, una Biblioteca Interactiva que se utiliza como soporte

  18. El Centro de Expresión Teatral: Un espacio para vivir el teatro

    E-print Network

    Nú ñ ez, Agustí n

    1995-04-01

    extra-muro La falta de formadores y directores de teatro en Bogotá determinó que la política educativa del CET no quedara entre cuatro paredes. Por lo tanto, los directores de este centro decidieron extender sus servicios de capacitación y asesoría... sus cursos la última promoción egresada del CET, concluyendo así doce años de labores ininterrumpidas en la capacitación teatral, para más de 2500 personas, muchas de ellas acutalmente vinculadas al teatro, la televisión, la asesoría artística y la...

  19. Avaliação experimental de sistemas de ancoragem para CFRP Experimental evaluation of CFRP anchorage systems

    Microsoft Academic Search

    Natasha Cristina da Silva

    Este trabalho objetiva avaliar o desempenho experimental de sistemas de an coragem para reforço estrutural com fibra de carbono. Foram ensaiados 13 corpos-de-prova prismáticos de concreto com diferentes tipos de dispositivos de ancoragem, além de ancoragens retas. Os prismas foram ensaiados utilizando-se uma gaiola de reação que impede rotações, garantindo que os esforços atuantes nos corpos-de-prova fossem predominantemente de tração.

  20. Natural bond orbital (NBO) population analysis of para-substituted S-Nitroso-thiophenols

    Microsoft Academic Search

    Li Xiao-Hong; Tang Zheng-Xin; Zhang Xian-Zhou

    2009-01-01

    Theoretical study of several para-substituted S-Nitroso-thiophenols has been performed using quantum computational ab initio RHF and density functional B3LYP and B3PW91 methods with 6-31G(d,p) basis set. Geometries obtained from DFT calculations were used to perform NBO analysis. It is noted that the weakness in the SN sigma bond is due to nO1??S3N2? delocalisation and is responsible for the longer SN

  1. Oxidation of ortho- and para-aminobenzoic acid. A pulse radiolysis and gamma radiolysis study

    Microsoft Academic Search

    Sonja Solar; Nikola Getoff; Robert Zona; Wolfgang Solar

    2011-01-01

    The oxidation of anthranilic acid (ortho-aminobenzoic acid, ANA) and para-aminobenzoic acid (PABA) by •OH, N3• and O•? in basic solution was studied by pulse radiolysis. The kinetic and spectroscopic characteristics of the intermediate transients were determined. For ANA the site attack of the OH radicals was established to be ?50% on the -NH2 moiety and ?50% on the aromatic ring

  2. Theoretical study of the design of a catalyst for para to ortho hydrogen conversion

    NASA Technical Reports Server (NTRS)

    Coffman, Robert E.

    1992-01-01

    The theory of Petzinger and Scalapino (1973) was thoroughly reviewed, and all of the basic equations for paramagnetic para to ortho hydrogen catalysis re-derived. There are only a few minor phase errors and errors of omission in the description of the theory. Three models (described by Petzinger and Scalapino) for the rate of para to ortho H2 catalysis were worked out, and uniform agreement obtained to within a constant factor of 2 pi. The analytical methods developed in the course of this study were then extended to two new models, which more adequately describe the process of surface catalysis including transfer of hydrogen molecules onto and off of the surface. All five equations for the para to ortho catalytic rate of conversion are described. The two new equations describe the catalytic rate for these models: H2 on the surface is a 2-D gas with lifetime tau; and H2 on the surface is a 2-D liquid undergoing Brownian motion (diffusion) with surface lifetime tau.

  3. Quantum chemical and experimental study of 1,2,4-trihydroxy-para-menthane

    NASA Astrophysics Data System (ADS)

    Rottmannová, Lenka; Lukeš, Vladimír; Il?in, Michal; Fodran, Peter; Herich, Peter; Kožíšek, Jozef; Liptaj, Tibor; Klein, Erik

    2013-10-01

    The conformational analysis of the para-menthane (PM) and 1,2,4-trihydroxy-para-menthane (TPM) is performed using the quantum chemical density functional theory (DFT) and ab initio Møller-Plesset perturbation theory up to the second order (MP2). In TPM, three hydroxyl groups generate eight stereoisomers comparing to the four para-menthane stereoisomers. From the thermodynamics point of view, the most preferred conformations show the chair-shaped configuration of the cyclohexane ring. The obtained energy barriers for the isopropyl group rotation in the chair-shaped stereoisomers are between 35 and 45 kJ mol-1. The crystal structure as well as the solvated TPM stereoisomer isolated from the Tea tree oil, Melaleuca alternifolia (Maiden & Betche) Cheel, were investigated experimentally. Isolated stereoisomer corresponds to the most energetically preferred conformation and the calculated structural data agree very well with the results from the X-ray and nuclear magnetic resonance measurements. Finally, the influence of the conformation and the presence of the intramolecular hydrogen bonds on the homolytic Osbnd H bond dissociation enthalpies and proton affinities were also discussed with respect to the simple alcohols (methanol, iso-propanol, iso-pentanol, tert-butanol, cyclohexanol) and phenol.

  4. Developmental validation of the ParaDNA(®) Intelligence System-A novel approach to DNA profiling.

    PubMed

    Blackman, Stephen; Dawnay, Nick; Ball, Glyn; Stafford-Allen, Beccy; Tribble, Nicholas; Rendell, Paul; Neary, Kelsey; Hanson, Erin K; Ballantyne, Jack; Kallifatidis, Beatrice; Mendel, Julian; Mills, DeEtta K; Wells, Simon

    2015-07-01

    DNA profiling through the analysis of STRs remains one of the most widely used tools in human identification across the world. Current laboratory STR analysis is slow, costly and requires expert users and interpretation which can lead to instances of delayed investigations or non-testing of evidence on budget grounds. The ParaDNA(®) Intelligence System has been designed to provide a simple, fast and robust way to profile DNA samples in a lab or field-deployable manner. The system analyses 5-STRs plus amelogenin to deliver a DNA profile that enables users to gain rapid investigative leads and intelligent prioritisation of samples in human identity testing applications. Utilising an innovative sample collector, minimal training is required to enable both DNA analysts and nonspecialist personnel to analyse biological samples directly, without prior processing, in approximately 75min. The test uses direct PCR with fluorescent HyBeacon(®) detection of STR allele lengths to provide a DNA profile. The developmental validation study described here followed the Scientific Working Group on DNA Analysis Methods (SWGDAM) guidelines and tested the sensitivity, reproducibility, accuracy, inhibitor tolerance, and performance of the ParaDNA Intelligence System on a range of mock evidence items. The data collected demonstrate that the ParaDNA Intelligence System displays useful DNA profiles when sampling a variety of evidence items including blood, saliva, semen and touch DNA items indicating the potential to benefit a number of applications in fields such as forensic, military and disaster victim identification (DVI). PMID:25980941

  5. The ortho:para-H_2 ratio in C- and J-type shocks

    NASA Astrophysics Data System (ADS)

    Wilgenbus, D.; Cabrit, S.; Pineau des Forêts, G.; Flower, D. R.

    2000-04-01

    We have computed extensive grids of models of both C- and J-type planar shock waves, propagating in dark, cold molecular clouds, in order to study systematically the behaviour of the ortho:para-H_2 ratio. Careful attention was paid to both macroscopic (dynamical) and microscopic (chemical reactions and collisional population transfer in H_2) aspects. We relate the predictions of the models to observational determinations of the ortho:para-H_2 ratio using both pure rotational lines and rovibrational lines. As an illustration, we consider ISO and ground-based H_2 observations of HH 54. Neither planar C-type nor planar J-type shocks appear able to account fully for these observations. Given the additional constraints provided by the observed ortho:para H_2 ratios, a C-type bowshock, or a C-type precursor followed by a J-type shock, remain as plausible models. Tables~2a-f and 4a-f are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html

  6. The rotational excitation of the interstellar HNC by para- and ortho-H2.

    PubMed

    Dumouchel, Fabien; K?os, Jacek; Lique, François

    2011-05-14

    Rotational excitation of the interstellar HNC due to collisions with H(2) is investigated. We present a new four dimensional (4D) potential energy surface for the HNC-H(2) collisional system. Both molecules were treated as rigid rotors. Interaction energy was obtained from the electronic structure calculations using a single and double-excitation coupled cluster method with perturbative contributions from connected triple excitations [CCSD(T)]. The five atoms were described using the aug-cc-pVTZ basis sets. Bond functions were placed at mid-distance between the HNC center of mass and the center of mass of H(2) for a better description of the van der Waals interaction. Close coupling calculations of the inelastic integral cross sections of HNC in collisions with para-H(2) and ortho-H(2) were calculated for kinetic energies up to 800 cm(-1). After Boltzmann thermal averaging, rate coefficients were obtained for temperatures ranging from 5 to 100 K. Significant differences exist between para- and ortho-H(2) results. The strongest collision-induced rotational HNC transitions are the transitions with ?j = 1 for collisions with para-H(2) and with ortho-H(2). The new rate coefficients should induce important consequences on the determination of HNC abundance in the interstellar medium. In particular, we expect that they will help to solve the interstellar problem of relative abundance of the HCN and HNC isomers. PMID:21298130

  7. Identification and Characterization of Catabolic para-Nitrophenol 4-Monooxygenase and para-Benzoquinone Reductase from Pseudomonas sp. Strain WBC-3?

    PubMed Central

    Zhang, Jun-Jie; Liu, Hong; Xiao, Yi; Zhang, Xian-En; Zhou, Ning-Yi

    2009-01-01

    Pseudomonas sp. strain WBC-3 utilizes para-nitrophenol (PNP) as a sole source of carbon, nitrogen, and energy. In order to identify the genes involved in this utilization, we cloned and sequenced a 12.7-kb fragment containing a conserved region of NAD(P)H:quinone oxidoreductase genes. Of the products of the 13 open reading frames deduced from this fragment, PnpA shares 24% identity to the large component of a 3-hydroxyphenylacetate hydroxylase from Pseudomonas putida U and PnpB is 58% identical to an NAD(P)H:quinone oxidoreductase from Escherichia coli. Both PnpA and PnpB were purified to homogeneity as His-tagged proteins, and they were considered to be a monomer and a dimer, respectively, as determined by gel filtration. PnpA is a flavin adenine dinucleotide-dependent single-component PNP 4-monooxygenase that converts PNP to para-benzoquinone in the presence of NADPH. PnpB is a flavin mononucleotide-and NADPH-dependent p-benzoquinone reductase that catalyzes the reduction of p-benzoquinone to hydroquinone. PnpB could enhance PnpA activity, and genetic analyses indicated that both pnpA and pnpB play essential roles in PNP mineralization in strain WBC-3. Furthermore, the pnpCDEF gene cluster next to pnpAB shares significant similarities with and has the same organization as a gene cluster responsible for hydroquinone degradation (hapCDEF) in Pseudomonas fluorescens ACB (M. J. Moonen, N. M. Kamerbeek, A. H. Westphal, S. A. Boeren, D. B. Janssen, M. W. Fraaije, and W. J. van Berkel, J. Bacteriol. 190:5190-5198, 2008), suggesting that the genes involved in PNP degradation are physically linked. PMID:19218392

  8. Dynamic interplay of ParA with the polarity protein, Scy, coordinates the growth with chromosome segregation in Streptomyces coelicolor

    PubMed Central

    Ditkowski, Bartosz; Holmes, Neil; Rydzak, Joanna; Donczew, Magdalena; Bezulska, Martyna; Ginda, Katarzyna; K?dzierski, Pawe?; Zakrzewska-Czerwi?ska, Jolanta; Kelemen, Gabriella H.; Jakimowicz, Dagmara

    2013-01-01

    Prior to bacterial cell division, the ATP-dependent polymerization of the cytoskeletal protein, ParA, positions the newly replicated origin-proximal region of the chromosome by interacting with ParB complexes assembled on parS sites located close to the origin. During the formation of unigenomic spores from multi-genomic aerial hyphae compartments of Streptomyces coelicolor, ParA is developmentally triggered to form filaments along the hyphae; this promotes the accurate and synchronized segregation of tens of chromosomes into prespore compartments. Here, we show that in addition to being a segregation protein, ParA also interacts with the polarity protein, Scy, which is a component of the tip-organizing centre that controls tip growth. Scy recruits ParA to the hyphal tips and regulates ParA polymerization. These results are supported by the phenotype of a strain with a mutant form of ParA that uncouples ParA polymerization from Scy. We suggest that the ParA–Scy interaction coordinates the transition from hyphal elongation to sporulation. PMID:23536551

  9. ParaDyn Implementation in the US Navy's DYSMAS Simulation System: FY08 Progress Report

    SciTech Connect

    Ferencz, R M; DeGroot, A J; Lin, J I; Zywicz, E; Durrenberger, J K; Sherwood, R J; Corey, I R

    2008-07-29

    The goal of this project is to increase the computational efficiency and capacity of the Navy's DYSMAS simulation system for full ship shock response to underwater explosion. Specifically, this project initiates migration to a parallel processing capability for the structural portion of the overall fluid-structure interaction model. The capstone objective for the first phase is to demonstrate operation of the DYSMAS simulation engine with a production model on a Naval Surface Warfare Center (IHD) parallel platform using the ParaDyn code for parallel processing of the structural dynamics. This year saw a successful launch to integrate ParaDyn, the high-parallel structural dynamics code from Lawrence Livermore National Laboratory (LLNL), into the DYSMAS system for simulating the response of ship structures to underwater explosion (UNDEX). The current LLNL version of DYNA3D, representing ten years of general development beyond the source branch used to initiate DYNA-N customization for DYSMAS, was first connected to the GEMINI flow code through DYSMAS Standard Coupler Interface (SCI). This permitted an early 'sanity check' by Naval Surface Warfare Center, Indian Head Division (NSWC-IHD) personnel that equivalent results were generated for their standard UNDEX test problems, thus ensuring the Verification & Validation pedigree they have developed remains intact. The ParaDyn code was then joined to the SCI in a manner requiring no changes to GEMINI. Three NSWC-IHD engineers were twice hosted at LLNL to become familiar with LLNL computer systems, the execution of the prototype software system, and to begin assessment of its accuracy and performance. Scaling data for the flow solver GEMINI was attained up to a one billion cell, 1000 processor run. The NSWC-IHD engineers were granted privileges to continue their evaluations through remote connections to LLNL's Open Computing Facility. Finally, the prototype changes were integrated into the mainline ParaDyn source repository and issued as part of its Version 8.1 beta release. This source was transmitted to NSWC-IHD and in collaboration with LLNL personnel the entire ParaDyn software suite successfully installed and demonstrated on its new SGI Altix machine. The ability of even minor numbers of processors for the structural dynamics to impact overall time-to-solution for DYSMAS has been demonstrated. Assessments of combined parallel efficiencies are beginning to highlight areas for further DYSMAS optimizations.

  10. Pre-treatment surgical para-aortic lymph node assessment in locally advanced cervical cancer

    PubMed Central

    Brockbank, Elly; Kokka, Fani; Bryant, Andrew; Pomel, Christophe; Reynolds, Karina

    2014-01-01

    Background Cervical cancer is the most common cause of death from gynaecological cancers worldwide. Locally advanced cervical cancer, FIGO stage equal or more than IB1 is treated with chemotherapy and external beam radiotherapy followed by brachytherapy. If there is metastatic para-aortic nodal disease radiotherapy is extended to additionally cover this area. Due to increased morbidity, ideally extended-field radiotherapy is given only when para-aortic nodal disease is proven. Therefore accurate assessment of the extent of the disease is very important for planning the most appropriate treatment. Objectives To evaluate the effectiveness and safety of pre-treatment surgical para-aortic lymph node assessment for woman with locally advanced cervical cancer (FIGO stage IB2 to IVA). Search methods We searched the Cochrane Gynaecological Cancer Group Trials Register, Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2011, Issue 1), MEDLINE and EMBASE (up to January 2011). We also searched registers of clinical trials, abstracts of scientific meetings, reference lists of included studies and contacted experts in the field. Selection criteria Randomised controlled trials (RCTs) that compared surgical para-aortic lymph node assessment and dissection with radiological staging techniques, in adult women diagnosed with locally advanced cervical cancer. Data collection and analysis Two reviewers independently assessed whether potentially relevant trials met the inclusion criteria, abstracted data and assessed risk of bias. One RCT was identified so no meta-analyses were performed. Main results We found only one trial, which included 61 women, that met our inclusion criteria. This trial reported data on surgical versus clinical staging and an assessment of the two surgical staging techniques; laparoscopic (LAP) versus extraperitoneal (EXP) surgical staging. The clinical staging was either a contrast-enhanced CT scan or MRI scan of the abdomen and pelvis to determine nodal status. In this trial, clinical staging appeared to significantly prolong overall and progression-free survival compared to surgical staging. There was no statistically significant difference in the number of women who experienced severe (grade 3 or 4) toxicity. There was no statistically significant difference in the risk of death, disease recurrence or progression, blood loss, severe toxicity and the duration of the operational procedure between LAP and EXP surgical staging techniques. The strength of the evidence is weak in this review as it is based on one small trial which was at moderate risk of bias. Authors’ conclusions From the one available RCT we found insufficient evidence that pre-treatment surgical para-aortic lymph node assessment for locally advanced cervical cancer is beneficial, and it may actually have an adverse effect on survival. However this conclusion is based on analysis of a small single trial and therefore definitive guidance or recommendations for clinical practice cannot be made. Therefore the decision to offer surgical pre-treatment assessment of para-aortic lymph nodes in locally advanced cervical cancer needs to be individualised. The uncertainty regarding any impact on survival from pre-treatment para-aortic lymph node assessment should be discussed openly with the women. PMID:21491407

  11. A single amino acid change in the para sodium channel protein is associated with knockdown-resistance ( kdr) to pyrethroid insecticides in German cockroach

    Microsoft Academic Search

    Ke Dong

    1997-01-01

    Previous genetic and pharmacological studies suggest that knockdown-resistance (kdr) to pyrethroid insecticides likely results from a mutation(s) in the para sodium channel gene. In this study, para sodium channel genes from an insecticide-susceptible German cockroach strain, CSMA, and a kdr-type German cockroach strain, Ectiban-R, were cloned and sequenced. Comparison of the nucleotide sequences of paraCSMA and paraEctiban-R revealed two nucleotide

  12. Ambientes para Educacao Baseada na Web e o Modelo Sergio Crespo , Marcus Felipe M. C. da Fontoura e Carlos Jos P. de Lucena

    E-print Network

    Endler, Markus

    funcionalidade entre esses ambientes. O modelo conceitual proposto é compatível com a plataforma EDUCOM para educação baseados na Web (WBE), modelo conceitual para WBE, plataforma EDUCOM/IMS, framework por ainda não existir uma plataforma comum para o aprendizado na Internet. Este tipo de estrutura é

  13. Unidad de Servicios Estudiantiles Integrales Propuesta para reflexionar acerca de la forma en que se deben prestar los servicios al estudiante

    Microsoft Academic Search

    Jaime Roldán López

    2006-01-01

    Las Instituciones Educativas tendrán que realizar un esfuerzo para hacer y crecer con calidad y bajo costo. La eficiencia y eficacia se deberán aplicar en cada proceso administrativo, sin menoscabo de la calidad de los servicios que ofrece, para formar profesionistas exitosos. Este desarrollo tecnológico alcanzado hoy en día se debe aprovechar para dar respuesta oportuna a las necesidades de

  14. TARIFAS DEPORTES UAM 2012-13 Necesaria y obligatoria para tener acceso a las actividades y abonos

    E-print Network

    Autonoma de Madrid, Universidad

    meses de junio, julio y agosto RESTO DE USUARIOS 112,04 FISIOTERAPIA Y ENTRENAMIENTOS INDIVIDUALIZADOS SERVICIOS COMPLEMENTARIOS (FISIOTERAPIA Y ENTRENAMIENTOS INDIVIDUALIZADOS) 65.00 /MES 4,00 **PARA

  15. PUERTO RICO DISASTER DECISION SUPPORT TOOL (DDST): APLICACIN WEB PARA LA PREPARACIN Y MANEJO DE EMERGENCIAS O AMENAZAS NATURALES

    E-print Network

    Gilbes, Fernando

    en general en la preparación, toma de decisiones y el manejo de una emergencia o amenaza natural. El importantes en la toma de decisiones, es gratuito y está disponible para la preparación de las comunidades

  16. BOSQUE 30(1): 36-47, 2009 Modelos para estimar la biomasa de especies nativas en plantaciones

    E-print Network

    Rey Benayas, José María

    factors. RESUMEN El uso de los ecosistemas forestales como sumideros y reservorios de carbono es cada día captura y de almacenamiento de CO2 es insuficiente para proponer formas de compensación a los propietarios

  17. IN VITRO EMBRYOTOXICITY OF A SERIES OF PARA-SUBSTITUTED PHENOLS: STRUCTURE, ACTIVITY AND CORRELATION WITH IN VIVO DATA

    EPA Science Inventory

    The embryotoxicity of phenol and twelve para-substituted congeners on mid-gestation rat embryos was evaluated in vitro. hrough application of correlative procedures and stepwise regression, equation describing the relationship between physical-chemical properties and various meas...

  18. Mutations in the Bemisia tabaci para sodium channel gene associated with resistance to a pyrethroid plus organophosphate mixture

    Microsoft Academic Search

    S Morin; M. S Williamson; S. J Goodson; J. K Brown; B. E Tabashnik; T. J Dennehy

    2002-01-01

    The voltage-gated sodium channel is the primary target site of pyrethroid insecticides. In some insects, super knockdown resistance (super-kdr) to pyrethroids is caused by point mutations in the linker fragment between transmembrane segments 4 and 5 of the para-type sodium channel protein domain II (IIS4-5). Here, we identify two mutations in the IIS4-5 linker of the para-type sodium channel of

  19. HAMP-Protocolo de Difus~ao em Grupo Para Redes Com Padr~oes de Mobilidade Heterogeneos

    E-print Network

    Rodrigues, Luís E.T.

    HAMP- Protocolo de Difus~ao em Grupo Para Redes Com Padr~oes de Mobilidade Heterog´eneos Oksana´is Rodrigues INESC-ID / IST ler@ist.utl.pt Resumo--A difus~ao em grupo ´e ´util para suportar diferentes aplicac¸~oes em MANETs, incluindo a disseminac¸~ao de dados, descoberta de servic¸os, publicac

  20. Metastasis of Right Upper Para-Esophageal Lymph Nodes in Central Compartment Lymph Node Dissection of Papillary Thyroid Cancer

    Microsoft Academic Search

    Byung-Joo Lee; Jin-Choon Lee; Soo-Geun Wang; Yong-Ki Kim; In-Ju Kim; Seok-Man Son

    2009-01-01

    Background  Although some lymph nodes (upper para-esophageal lymph nodes) that exist between the right recurrent laryngeal nerve and the\\u000a esophagus should be involved in central-compartment lymph node dissection (CLND) in patients with papillary thyroid cancer,\\u000a the procedure can cause some injury to the nerve. We set out to assess the incidence of right upper para-esophageal lymph\\u000a node metastasis after routine CLND.

  1. Supported transition metal catalysts for para- to ortho-hydrogen conversion

    NASA Technical Reports Server (NTRS)

    Brooks, Christopher J.; Wang, Wei; Eyman, Darrell P.

    1994-01-01

    The main goal of this study was to develop and improve on existing catalysts for the conversion of ortho- to para-hydrogen. Starting with a commercially available Air Products nickel silicate, which had a beta value of 20, we were trying to synthesize catalysts that would be an improvement to AP. This was accomplished by preparing silicates with various metals as well as different preparation methods. We also prepared supported ruthenium catalysts by various techniques using several metal precursors to improve present technology. What was also found was that the activation conditions prior to catalytic testing was highly important for both the silicates and the supported ruthenium catalysts. While not the initial focus of the research, we made some interesting observations into the adsorption of H2 on ruthenium. This helped us to get a better understanding of how ortho- to para-H2 conversion takes place, and what features in a catalyst are important to optimize activity. Reactor design was the final area in which some interesting conclusions were drawn. As discussed earlier, the reactor catalyst bed must be constructed using straight 1/8 feet OD stainless steel tubing. It was determined that the use of 1/4 feet OD tubing caused two problems. First, the radius from the center of the bed to the wall was too great for thermal equilibrium. Since the reaction of ortho- to para-H2 is exothermic, the catalyst bed center was warmer than the edges. Second, the catalyst bed was too shallow using a 1/4 feet tube. This caused reactant blow-by which was thought to decrease the measured activity when the flow rate was increased. The 1/8 feet tube corrected both of these concerns.

  2. Contextual influence on the tilt after-effect in foveal and para-foveal vision.

    PubMed

    Chen, Cheng; Chen, Xianghui; Gao, Min; Yang, Qiong; Yan, Hongmei

    2015-06-01

    A sensory stimulus can only be properly interpreted in light of the stimuli that surround it in space and time. The tilt illusion (TI) and tilt after-effect (TAE) provide good evidence that the perception of a target depends strongly on both its spatial and temporal context. In previous studies, the TI and TAE have typically been investigated separately, so little is known about their co-effects on visual perception and information processing mechanisms. Here, we considered the influence of the spatial context and the temporal effect together and asked how center-surround context affects the TAE in foveal and para-foveal vision. Our results showed that different center-surround spatial patterns significantly affected the TAE for both foveal and para-foveal vision. In the fovea, the TAE was mainly produced by central adaptive gratings. Cross-oriented surroundings significantly inhibited the TAE, and iso-oriented surroundings slightly facilitated it; surround inhibition was much stronger than surround facilitation. In the para-fovea, the TAE was mainly decided by the surrounding patches. Likewise, a cross-oriented central patch inhibited the TAE, and an iso-oriented one facilitated it, but there was no significant difference between inhibition and facilitation. Our findings demonstrated, at the perceptual level, that our visual system adopts different mechanisms to process consistent or inconsistent central-surround orientation information and that the unequal magnitude of surround inhibition and facilitation is vitally important for the visual system to improve the detectability or discriminability of novel or incongruent stimuli. PMID:25895001

  3. A centroid molecular dynamics study of liquid para-hydrogen and ortho-deuterium.

    PubMed

    Hone, Tyler D; Voth, Gregory A

    2004-10-01

    Centroid molecular dynamics (CMD) is applied to the study of collective and single-particle dynamics in liquid para-hydrogen at two state points and liquid ortho-deuterium at one state point. The CMD results are compared with the results of classical molecular dynamics, quantum mode coupling theory, a maximum entropy analytic continuation approach, pair-product forward- backward semiclassical dynamics, and available experimental results. The self-diffusion constants are in excellent agreement with the experimental measurements for all systems studied. Furthermore, it is shown that the method is able to adequately describe both the single-particle and collective dynamics of quantum liquids. PMID:15446940

  4. Rotational excitation of ortho-NH3 by para-H

    NASA Astrophysics Data System (ADS)

    Danby, G.; Flower, D. R.; Kochanski, E.; Kurdi, L.; Valiron, P.

    1986-09-01

    Inelastic collision cross sections and low-temperature rate coefficients (T between 15 and 300 K) are presented for the process of collisional excitation of ortho-NH3 by para-H2 in its rovibrational ground state (nu = j = 0). The results have been obtained with the quantum mechanical coupled-channels technique, using an ab initio NH3-H2 potential-energy surface. Comparison is made with previous calculations of rate coefficients for the excitation of ortho-NH3 by He.

  5. TAgentsP y PDP: propuestas para una plataforma de agentes en computacion ubicua

    Microsoft Academic Search

    Ma Celeste; Campo Vazquez; Carlos Garc; Florina Almenares; Mendoza Andres; Mar ´ in Lopez

    ser, presenta entornos saturados de dispositivos con capaci-dades de computaci'on y comunicaci'on que le proporcionan a los usuarios servicios ocultando la complejidad tecnol'ogi-ca subyacente. Nuestra l'inea de investigaci'on pretende po-tenciar el uso de la tecnolog'ia de agentes m'oviles en com-putaci'on ubicua para facilitar este objetivo. El trabajo que aqu'i presentamos se centra por un lado en proporcionar una plataforma de

  6. Effect of nuclear spin symmetry in cold and ultracold reactions: D + para/ortho-H2

    NASA Astrophysics Data System (ADS)

    Simbotin, Ionel; Côté, Robin

    2015-06-01

    We report results for reaction and vibrational quenching of the collision D with para-H2(v,j=0) and ortho-H2(v,j=1) at cold and ultracold temperatures. We investigate the effect of nuclear spin symmetry for barrier dominated processes (0?slant v?slant 4) and for one barrierless case (v = 5). We find resonant structures for energies in the range corresponding to 0.01–10 K, which depend on the nuclear spin of H2, arising from contributions of specific partial waves. We discuss the implications on the results in this benchmark system for ultracold chemistry.

  7. Photoresponse of poly([ital para]-phenylenevinylene) light-emitting diodes

    SciTech Connect

    Wei, X.; Raikh, M.; Vardeny, Z.V. (Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States)); Yang, Y. (UNIAX Corporation, 5375 Overpass Road, Santa Barbara, California 93111 (United States)); Moses, D. (Institute of Polymers and Organic Solids, University of California, Santa Barbara, California 93106 (United States))

    1994-06-15

    We have studied the photoresponses of poly([ital para]-phenylene vinylene) (PPV) light-emitting diodes (LED's) with PPV derivatives sandwiched between tin oxide (ITO) and metals including calcium, aluminum, and copper. Under illumination all diodes exhibit relatively large photoconductive I(V) responses which cross the dark I(V) curve at a forward-bias voltage V[sub 0] that scales with the difference in work functions between the ITO and metal electrodes, the open-circuit voltage saturates at V[sub 0] and is temperature independent, and the enhanced electroluminescence intensity of the illuminated LED's correlates with the photocurrent. (AIP)

  8. Rational extensions of the trigonometric Darboux-Pöschl-Teller potential based on para-Jacobi polynomials

    NASA Astrophysics Data System (ADS)

    Bagchi, B.; Grandati, Y.; Quesne, C.

    2015-06-01

    The possibility for the Jacobi equation to admit, in some cases, general solutions that are polynomials has been recently highlighted by Calogero and Yi, who termed them para-Jacobi polynomials. Such polynomials are used here to build seed functions of a Darboux-Bäcklund transformation for the trigonometric Darboux-Pöschl-Teller potential. As a result, one-step regular rational extensions of the latter depending both on an integer index n and on a continuously varying parameter ? are constructed. For each n value, the eigenstates of these extended potentials are associated with a novel family of ?-dependent polynomials, which are orthogonal on [-1,1].

  9. Natural bond orbital population analysis of para-substituted O -nitrosyl carboxylate compounds

    Microsoft Academic Search

    Li Xiao-Hong; Chen Qing-Dong; Zhang Xian-Zhou

    2009-01-01

    Theoretical study of several para-substituted O-nitrosyl carboxylate compounds has been performed using density functional B3LYP method with 6-31G(d,p) basis set. Geometries\\u000a obtained from DFT calculation were used to perform natural bond orbital analysis. It is noted that weakness in the O3–N2 sigma bond is due to $$ n_{{{\\\\text{O}}_{1} }} \\\\to \\\\sigma_{{{\\\\text{O}}_{3} - {\\\\text{N}}_{2} }}^{*} $$ delocalization and is responsible for

  10. The Ortho:Para Ratio of H3+ in Diffuse Molecular Clouds

    NASA Astrophysics Data System (ADS)

    Crabtree, Kyle N.; Indriolo, Nick; Kreckel, Holder; Tom, Brian A.; McCall, Benjamin J.

    2010-11-01

    Since its first interstellar detection in the mid 1990s, H3+ has proved to be a powerful probe of astrophysical conditions. In cold molecular clouds, only the lowest two rotational energy levels of H3+ are populated: the (J,K) = (1,1) para state and the (1,0) ortho state. The relative populations of these levels can be used to calculate an excitation temperature, Tex. In dense molecular clouds, Tex agrees well with the estimated cloud kinetic temperature. However, in diffuse molecular clouds, Tex is found to be 30 K, while the kinetic temperature, as determined from the excitation temperature T01 (given by the relative populations of the J = 0 and J = 1 rotational levels of H2) is on average 60-70 K in these environments. Because the (1,1) state of H3+ is the lower-energy state, this indicates that there is more para-H3+ in diffuse molecular clouds than would be expected based on the cloud kinetic temperature. To understand the excess para-H3+ (or the lower-than-expected Tex), we have constructed a chemical model that takes into account the nuclear spin dependence of H3+ formation, proton scrambling via collisions with H2, and dissociative recombination with electrons. At the heart of this model is the reaction H3+ + H2 ? H2 + H3+ , which can proceed by one of three pathways: the identity, proton hop, and hydrogen exchange. The branching fractions for the three pathways, Sid, Shop, and Sexch, influence the nature and extent of the proton scrambling. We use the microcanonical statistical model of Park and Light (J. Chem. Phys. 126, 044305, 1997) to calculate nuclear-spin-dependent rate coefficients that describe the extent of proton scrambling as a function of temperature and the aforementioned branching fractions. As a result, our model predicts, based on these parameters, what the observed Tex should be for a certain cloud kinetic temperature. Our model suggests that on its own, the H3+ + H2 reaction would effectively thermalize the ortho:para H3+ ratio (i.e., Tex = T01). However, dissociative recombination is taken into account, this thermalization is incomplete, and the resultant competition between thermalization and dissociative recombination seems to reproduce the astronomical observations for Sid ~ 0.8-0.9. However, the details of the spin-dependence of H3+ dissociative recombination are important, and at present, experimentally uncertain. More information about this process is needed to determine the validity of our modeling results.

  11. Tratamento farmacológico da distimia: avaliação crítica da evidência científica Pharmacological treatment of dysthymia: a critical appraisal of the

    Microsoft Academic Search

    Maurício Silva de Lima

    Distimia é um transtorno depressivo de natureza crônica, mas de menor gravidade que a depressão maior, cujos sintomas persistem por mais ou menos dois anos. Este artigo aborda aspectos relativos à eficácia do tratamento farmacológico na distimia, a partir de resultados de revisões sistemáticas recentemente concluídas. Em termos de eficácia, os resultados foram similares para as diferentes classes de drogas,

  12. Ortho-Para Conversion Rate in Solid Hydrogen up to 27 GPa

    NASA Astrophysics Data System (ADS)

    Eggert, J. H.; Karmon, E.; Mao, H. K.; Hemley, R. J.

    1996-03-01

    At low temperatures ortho-H2 (I=1, J=odd) converts to para-H2 (I=0, J=even). We observed the ortho-para conversion of solid H2 at high pressures between 0.7 and 27 GPa by rotational Raman scattering in a cryogenic diamond- anvil cell. Previous experiments have shown that the conversion rate increases from 2.9 %/hr at ambient pressure to 5.5 %/hr at 0.5 GPa, then falls to 4.0 %/hr at 0.9 GPa, the highest pressure previously measured. We find a minimum conversion rate of about 1.2 %/hr at 3 GPa followed by a rapid increase to over 100 %/hr at 27 GPa. The ortho concentration c1 in solid H2 has a time dependence dc_1/dt=-kc_1^2, assuming that ortho pairs are needed to induce a nuclear-spin flip and that molecular diffusion keeps the number of ortho pairs proportional to c_1^2. In our case we expect diffusion to be impeded, so we developed a system of 13 differential equations to correctly account for ortho-H2 pairs. Using our analysis, we are able to determine both the conversion rate k and the quantum diffusion coefficient D at high pressure. Our observations impact high-pressure phase diagrams of H_2, particularly when the samples have different thermal histories.

  13. [Morbidity of pelvic lymphadenectomy and para-aortic lymphadenectomy in endometrial cancer].

    PubMed

    Agar, Nicolas; Philippe, Anne-Cécile; Bourdel, Nicolas; Rabischong, Benoît; Canis, Michel; Le Bouedec, Guillaume; Mulliez, Aurélien; Dauplat, Jacques; Pomel, Christophe

    2015-05-01

    The aim of this study was to evaluate the complication rate of pelvic and para-aortic lymphadenectomy in the management of endometrial cancer following the changes to the recommendations of INCa 2010. This is a retrospective study of 208 patients operated for endometrial cancer between July 2010 and March 2014 in two referral centers. Eighty lymphadenectomy were performed, 65 with hysterectomy and bilateral annexectomy and 18 lymphadenectomy were performed for restaging. Complications assessment is based on the Dindo Clavien classification. We report 17 severe complications (grade 3a and over) (P<0.001), including 14 among patients receiving lymphadenectomy. Morbidity increases with the number of lymphnodes removed and their positivity (P<0.001). The para-aortic lymphadenectomy is primarily responsible for complications (P <0.001). We describe 7 lower limbs lymphedema, 12 nerve injuries, 8 ileus, 5 venous or arterial thromboembolism, 17 blood transfusions, 13 lymphoceles including 9 infected. The rate of intraoperative complications on a first lymphadenectomy is 8% while it reached 22% for restaging. Restaging is significantly more at risk of serious complications (P=0.03) with two deaths. Twenty-four chronic disorders with impaired quality of life (2 without lymphadenectomy) are reported. They are present in 50% of restaging (P=0.033 compared to first lymphadenectomy). Lymphadenectomy is a source of severe morbidity (17.5%) with 2.5% mortality. The benefit of this surgery should probably be discussed again. PMID:25956349

  14. Effects of acoustic feedback training in elite-standard Para-Rowing.

    PubMed

    Schaffert, Nina; Mattes, Klaus

    2015-01-01

    Assessment and feedback devices have been regularly used in technique training in high-performance sports. Biomechanical analysis is mainly visually based and so can exclude athletes with visual impairments. The aim of this study was to examine the effects of auditory feedback on mean boat speed during on-water training of visually impaired athletes. The German National Para-Rowing team (six athletes, mean ± s, age 34.8 ± 10.6 years, body mass 76.5 ± 13.5 kg, stature 179.3 ± 8.6 cm) participated in the study. Kinematics included boat acceleration and distance travelled, collected with Sofirow at two intensities of training. The boat acceleration-time traces were converted online into acoustic feedback and presented via speakers during rowing (sections with and without alternately). Repeated-measures within-participant factorial ANOVA showed greater boat speed with acoustic feedback than baseline (0.08 ± 0.01 m·s(-1)). The time structure of rowing cycles was improved (extended time of positive acceleration). Questioning of athletes showed acoustic feedback to be a supportive training aid as it provided important functional information about the boat motion independent of vision. It gave access for visually impaired athletes to biomechanical analysis via auditory information. The concept for adaptive athletes has been successfully integrated into the preparation for the Para-Rowing World Championships and Paralympics. PMID:25105858

  15. Rotational relaxation of CS by collision with ortho- and para-H2 molecules.

    PubMed

    Denis-Alpizar, Otoniel; Stoecklin, Thierry; Halvick, Philippe; Dubernet, Marie-Lise

    2013-11-28

    Quantum mechanical investigation of the rotationally inelastic collisions of CS with ortho- and para-H2 molecules is reported. The new global four-dimensional potential energy surface presented in our recent work is used. Close coupling scattering calculations are performed in the rigid rotor approximation for ortho- and para-H2 colliding with CS in the j = 0-15 rotational levels and for collision energies ranging from 10(-2) to 10(3) cm(-1). The cross sections and rate coefficients for selected rotational transitions of CS are compared with the ones previously reported for the collision of CS with He. The largest discrepancies are observed at low collision energy, below 1 cm(-1). Above 10 cm(-1), the approximation using the square root of the relative mass of the colliders to calculate the cross sections between a molecule and H2 from the data available with (4)He is found to be a good qualitative approximation. The rate coefficients calculated with the electron gas model for the He-CS system show more discrepancy with our accurate results. However, scaling up these rates by a factor of 2 gives a qualitative agreement. PMID:24289351

  16. Triplet energies and excimer formation in meta- and para-linked carbazolebiphenyl matrix materials.

    PubMed

    Bagnich, Sergey A; Rudnick, Alexander; Schroegel, Pamela; Strohriegl, Peter; Köhler, Anna

    2015-06-28

    We present a spectroscopic investigation on the effect of changing the position where carbazole is attached to biphenyl in carbazolebiphenyl (CBP) on the triplet state energies and the propensity to excimer formation. For this, two CBP derivatives have been prepared with the carbazole moieties attached at the (para) 4- and 4(')-positions (pCBP) and at the (meta) 3- and 3(')-positions (mCBP) of the biphenyls. These compounds are compared to analogous mCDBP and pCDBP, i.e. two highly twisted carbazoledimethylbiphenyls, which have a high triplet energy at about 3.0?eV and tend to form triplet excimers in a neat film. This torsion in the structure is associated with localization of the excited state onto the carbazole moieties. We find that in mCBP and pCBP, excimer formation is prevented by localization of the triplet excited state onto the central moiety. As conjugation can continue from the central biphenyls into the nitrogen of the carbazole in the para-connected pCBP, emission involves mainly the benzidine. By contrast, the meta-linkage in mCBP limits conjugation to the central biphenyl. The associated shorter conjugation length is the reason for the higher triplet energy of 2.8?eV in mCBP compared with the 2.65?eV in pCBP. PMID:25987578

  17. Comparing the Well-Being of Para and Olympic Sport Athletes: A Systematic Review.

    PubMed

    Macdougall, Hannah; O'Halloran, Paul; Shields, Nora; Sherry, Emma

    2015-07-01

    This systematic review included 12 studies that compared the well-being of Para and Olympic sport athletes. Meta-analyses revealed that Para athletes, compared with Olympic sport athletes, had lower levels of self-acceptance, indicated by athletic identity, d = ?0.47, 95% confidence interval (CI) [?0.77, ?0.16], and body-image perceptions, d = ?0.33, 95% CI [?0.59, ?0.07], and differed from Olympic sport athletes in terms of their motivation, indicated by a greater mastery-oriented climate, d = 0.74, 95% CI [0.46, 1.03]. Given an inability to pool the remaining data for meta-analysis, individual standardized mean differences were calculated for other dimensions of psychological and subjective well-being. The results have implications for professionals and coaches aiming to facilitate the well-being needs of athletes under their care. Future research would benefit from incorporating established models of well-being based on theoretical rationale combined with rigorous study designs. PMID:26113553

  18. Comportamiento Sexual y Autoeficacia para la Negociación de Sexo Más Seguro en Personas Heterosexuales

    PubMed Central

    Pérez-Jiménez, David; Santiago-Rivas, Marimer; Serrano-García, Irma

    2012-01-01

    La autoeficacia se le ha identificado como uno de los factores que puede facilitar o dificultar llevar a cabo sexo más seguro. Estudios revelan que las personas que están el relaciones estables usan métodos de protección menos frecuente que quienes tienen parejas casuales. Realizamos un estudio con 447 personas heterosexuales activas sexualmente. Les administramos un cuestionario dirigido a medir el comportamiento sexual, el uso del condón masculino y la práctica de la masturbación mutua, y la autoeficacia para llevar a cabo estas conductas. Los resultados reflejan que los hombres están más activos sexualmente y que el uso del condón y la práctica de la masturbación mutua como alternativa de sexo más seguro es muy baja. En los casos donde se usa el condón esta práctica es realizada en su mayoría por las personas que se encuentran en una relación de pareja casual. No obstante, los/las participantes tienen altos niveles de autoeficacia hacia ambas prácticas. Aunque la autoeficacia es uno de los factores que incide en decidir llevar a cabo sexo más seguro, ésta no es suficiente para que esta meta se logre. PMID:22837585

  19. The new ParaDIgm: IgM from bench to clinic

    PubMed Central

    Hanala, Sherif

    2012-01-01

    The inaugural IgM event entitled “The new ParaDIgm: IgM from bench to clinic” brought together the increasingly active and growing IgM antibody community to discuss recent advances and challenges facing the discovery and development of IgM antibody therapies and technologies. Researchers, clinicians and biomanufacturing experts delivered 21 talks on the basic science and isolation of IgM, upstream and downstream development, and formulation and clinical development of the molecules. Participants networked around topics aimed at exploring the full potential of IgM antibodies. The meeting was held at DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e. V. (Society for Chemical Engineering and Biotechnology), a non-profit scientific and technical society based in Frankfurt am Main, Germany. The meeting was sponsored by Patrys, Laureate Biopharma, Bio-Rad Laboratories, BIA Separations, Percivia and the Bio Affinity Company (BAC). The second New ParaDIgm: IgM from bench to clinic meeting, will be held on April 23–24, 2013 in Frankfurt, Germany. PMID:22864407

  20. Ortho-to-Para Ratio in Interstellar Water on the Sightline toward Sagittarius B2(N)

    NASA Astrophysics Data System (ADS)

    Lis, Dariusz C.; Bergin, Edwin A.; Schilke, Peter; van Dishoeck, Ewine F.

    2013-10-01

    The determination of the water ortho-to-para ratio (OPR) is of great interest for studies of the formation and thermal history of water ices in the interstellar medium and protoplanetary disk environments. We present new Herschel observations of the fundamental rotational transitions of ortho- and para-water on the sightline toward Sagittarius B2(N), which allow improved estimates of the measurement uncertainties due to instrumental effects and assumptions about the excitation of water molecules. These new measurements, suggesting a spin temperature of 24-32 K, confirm the earlier findings of an OPR below the high-temperature value on the nearby sightline toward Sagittarius B2(M). The exact implications of the low OPR in the galactic center molecular gas remain unclear and will greatly benefit from future laboratory measurements involving water freeze-out and evaporation processes under low-temperature conditions, similar to those present in the galactic interstellar medium. Given the specific conditions in the central region of the Milky Way, akin to those encountered in active Galactic nuclei, gas-phase processes under the influence of strong X-ray and cosmic ray ionization also have to be carefully considered. We summarize some of the latest laboratory measurements and their implications here.

  1. PFI-ZEKE (Pulsed Field Ionization-Zero Electron Kinetic Energy) para el estudio de iones

    NASA Astrophysics Data System (ADS)

    Castaño, F.; Fernández, J. A.; Basterretxea, A. Longarte. F.; Sánchez Rayo, M. N.; Martínez, R.

    Entre las áreas hacia donde ha evolucionado la Química en los últimos años están los estudios de sistemas con especies reactivas de alta energía y los dominados por fuerzas intermoleculares débiles, con energías de unas pocas kcal/mol. En efecto, el estudio de las propiedades de los iones, comenzando por su relación con la molécula neutra de la que procede, la energía de ionización, los estados vibracionales y rotacionales, energías de enlace de Van der Waals entre el ión y una amplia variedad de otras moléculas, sus confórmeros o isómeros y sus reacciones o semi-reacciones químicas están en la raíz de la necesidad de la espectroscopía conocida como PFI-ZEKE, Pulsed Field Ionization-Zero Electron Kinetic Energy. Entre las aplicaciones que requieren estos conocimientos se encuentran la generación de plasmas para la fabricación de semiconductores, memorias magnéticas, etc, así como los sistemas astrofísicos, la ionosfera terrestre, etc. La espectroscopía ZEKE es una evolución de las de fluorescencia inducida por láser, LIF, ionización multifotónica acrecentada por resonancia, REMPI, con uno y dos colores y acoplada a un sistema de tiempo de vuelo, REMPI-TOF-MS, y las espectroscopías de doble resonancia IR-UV y UV-UV. Sus espectros y la ayuda de cálculos ab inicio permite determinar las energías de enlace de complejos de van der Waals en estados fundamental y excitados, identificar confórmeros e isómeros, obtener energías de ionización experimentales aproximadas (100 cm-1) y otras variables de interés. Al igual que con LIF, REMPI y dobles resonancias, es posible utilizar muestras gaseosas, pero los espectros están muy saturados de bandas y su interpretación es difícil o imposible. Se evitan estas dificultades estudiando las moléculas o complejos en expansiones supersónicas, donde la T de los grados de libertad solo alcanzan unos pocos K. Para realizar experimentos de ZEKE hay que utilizar una propiedad recientemente descubierta, que va en contra de lo esperado en otros sistemas físicos y que consiste en que los altos estados Rydberg de átomos, moléculas y sus complejos de van der Waals (o de los iones) tienen tiempos de vida de centenas de ? s. En resumen, el experimento y la espectroscopía ZEKE consiste en excitar un átomo, molécula o cluster sucesivamente a dos estados excitados selectivos de manera que el final sea un estado Rydberg. A continuación se aplica un campo eléctrico variable que lo ioniza y después de un cierto retraso se aplica un campo eléctrico de extracción, tanto para el electrón como para el ión. El espectro de los iones, es un espectro ZEKE. Hay varias alternativas para hacer este último proceso. El estudio de la espectroscopía y propiedades de iones y sus clusters requiere el conocimiento detallado de la espectroscopía de la molécula neutra, los estados Rydberg, de los confórmeros y sus complejos. Todo ello implica el haber estudiado los sistemas por LIF, REMPI y doble resonancia (hole burning IR-UV, UV-UV). Además solo es posible interpretar los resultados y obtener la información contenida en los espectros con ayuda de cálculos cuánticos ab initio. Hasta el momento hemos aplicado tanto el ZEKE como el conjunto de técnicas mencionadas anteriormente, a varias molécula de interés químico general como anilina y sus derivados, así como sus complejos con agua y amoniaco. Sin embargo, el método es muy versátil y puede aplicarse a iones de átomos, iones múltiples, moléculas sencillas y sus clusters así como a sus semi-reacciones. Como ejemplo de uno de estos espectros PFI-ZEKE se presenta aquí el caso del amonibenzonitrilo, ABN y solamente en su estado fundamental. En la conferencia se presentarán espectros ZEKE del ABN y moléculas similares en estados vibracionales intermedios (islas de estabilidad), así como la determinación de potenciales de ionización precisos, energías de enlace de compuestos del ión con varios disolventes y otras propiedades de interés, discutiendo sus resultados.

  2. ORTHO-TO-PARA ABUNDANCE RATIO OF WATER ION IN COMET C/2001 Q4 (NEAT): IMPLICATION FOR ORTHO-TO-PARA ABUNDANCE RATIO OF WATER

    SciTech Connect

    Shinnaka, Yoshiharu; Kawakita, Hideyo; Kobayashi, Hitomi [Koyama Astronomical Observatory, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555 (Japan); Boice, Daniel C.; Martinez, Susan E. [Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 (United States)

    2012-04-20

    The ortho-to-para abundance ratio (OPR) of cometary molecules is considered to be one of the primordial characteristics of cometary ices, and contains information concerning their formation. Water is the most abundant species in cometary ices, and OPRs of water in comets have been determined from infrared spectroscopic observations of H{sub 2}O rovibrational transitions so far. In this paper, we present a new method to derive OPR of water in comets from the high-dispersion spectrum of the rovibronic emission of H{sub 2}O{sup +} in the optical wavelength region. The rovibronic emission lines of H{sub 2}O{sup +} are sometimes contaminated by other molecular emission lines but they are not affected seriously by telluric absorption compared with near-infrared observations. Since H{sub 2}O{sup +} ions are mainly produced from H{sub 2}O by photoionization in the coma, the OPR of H{sub 2}O{sup +} is considered to be equal to that of water based on the nuclear spin conservation through the reaction. We have developed a fluorescence excitation model of H{sub 2}O{sup +} and applied it to the spectrum of comet C/2001 Q4 (NEAT). The derived OPR of water is 2.54{sup +0.32}{sub -0.25}, which corresponds to a nuclear spin temperature (T{sub spin}) of 30{sup +10}{sub -4} K. This is consistent with the previous value determined in the near-infrared for the same comet (OPR = 2.6 {+-} 0.3, T{sub spin} = 31{sup +11}{sub -5} K).

  3. ParaHox gene expression in larval and postlarval development of the polychaete Nereis virens (Annelida, Lophotrochozoa)

    PubMed Central

    Kulakova, Milana A; Cook, Charles E; Andreeva, Tatiana F

    2008-01-01

    Background Transcription factors that encode ANTP-class homeobox genes play crucial roles in determining the body plan organization and specification of different organs and tissues in bilaterian animals. The three-gene ParaHox family descends from an ancestral gene cluster that existed before the evolution of the Bilateria. All three ParaHox genes are reported from deuterostomes and lophotrochozoans, but not to date from any ecdysozoan taxa, and there is evidence that the ParaHox genes, like the related Hox genes, were ancestrally a single chromosomal cluster. However, unlike the Hox genes, there is as yet no strong evidence that the ParaHox genes are expressed in spatial and temporal order during embryogenesis. Results We isolated fragments of the three Nereis virens ParaHox genes, then used these as probes for whole-mount in situ hybridization in larval and postlarval worms. In Nereis virens the ParaHox genes participate in antero-posterior patterning of ectodermal and endodermal regions of the digestive tract and are expressed in some cells in the segment ganglia. The expression of these genes occurs in larval development in accordance with the position of these cells along the main body axis and in postlarval development in accordance with the position of cells in ganglia along the antero-posterior axis of each segment. In none of these tissues does expression of the three ParaHox genes follow the rule of temporal collinearity. Conclusion In Nereis virens the ParaHox genes are expressed during antero-posterior patterning of the digestive system (ectodermal foregut and hindgut, and endodermal midgut) of Nereis virens. These genes are also expressed during axial specification of ventral neuroectodermal cell domains, where the expression domains of each gene are re-iterated in each neuromere except for the first parapodial segment. These expression domains are probably predetermined and may be directed on the antero-posterior axis by the Hox genes, whose expression starts much earlier during embryogenesis. Our results support the hypothesis that the ParaHox genes are involved in antero-posterior patterning of the developing embryo, but they do not support the notion that these genes function only in the patterning of endodermal tissues. PMID:18510732

  4. Metabolism of Doubly para-Substituted Hydroxychlorobiphenyls by Bacterial Biphenyl Dioxygenases.

    PubMed

    Pham, Thi Thanh My; Sondossi, Mohammad; Sylvestre, Michel

    2015-07-15

    In this work, we examined the profile of metabolites produced from the doubly para-substituted biphenyl analogs 4,4'-dihydroxybiphenyl, 4-hydroxy-4'-chlorobiphenyl, 3-hydroxy-4,4'-dichlorobiphenyl, and 3,3'-dihydroxy-4,4'-chlorobiphenyl by biphenyl-induced Pandoraea pnomenusa B356 and by its biphenyl dioxygenase (BPDO). 4-Hydroxy-4'-chlorobiphenyl was hydroxylated principally through a 2,3-dioxygenation of the hydroxylated ring to generate 2,3-dihydro-2,3,4-trihydroxy-4'-chlorobiphenyl and 3,4-dihydroxy-4'-chlorobiphenyl after the removal of water. The former was further oxidized by the biphenyl dioxygenase to produce ultimately 3,4,5-trihydroxy-4'-chlorobiphenyl, a dead-end metabolite. 3-Hydroxy-4,4'-dichlorobiphenyl was oxygenated on both rings. Hydroxylation of the nonhydroxylated ring generated 2,3,3'-trihydroxy-4'-chlorobiphenyl with concomitant dechlorination, and 2,3,3'-trihydroxy-4'-chlorobiphenyl was ultimately metabolized to 2-hydroxy-4-chlorobenzoate, but hydroxylation of the hydroxylated ring generated dead-end metabolites. 3,3'-Dihydroxy-4,4'-dichlorobiphenyl was principally metabolized through a 2,3-dioxygenation to generate 2,3-dihydro-2,3,3'-trihydroxy-4,4'-dichlorobiphenyl, which was ultimately converted to 3-hydroxy-4-chlorobenzoate. Similar metabolites were produced when the biphenyl dioxygenase of Burkholderia xenovorans LB400 was used to catalyze the reactions, except that for the three substrates used, the BPDO of LB400 was less efficient than that of B356, and unlike that of B356, it was unable to further oxidize the initial reaction products. Together the data show that BPDO oxidation of doubly para-substituted hydroxychlorobiphenyls may generate nonnegligible amounts of dead-end metabolites. Therefore, biphenyl dioxygenase could produce metabolites other than those expected, corresponding to dihydrodihydroxy metabolites from initial doubly para-substituted substrates. This finding shows that a clear picture of the fate of polychlorinated biphenyls in contaminated sites will require more insights into the bacterial metabolism of hydroxychlorobiphenyls and the chemistry of the dihydrodihydroxylated metabolites derived from them. PMID:25956777

  5. Determination of the ortho to para ratio of H2Cl+ and H2O+ from submillimeter observations.

    PubMed

    Gerin, Maryvonne; de Luca, Massimo; Lis, Dariusz C; Kramer, Carsten; Navarro, Santiago; Neufeld, David; Indriolo, Nick; Godard, Benjamin; Le Petit, Franck; Peng, Ruisheng; Phillips, Thomas G; Roueff, Evelyne

    2013-10-01

    The opening of the submillimeter sky with the Herschel Space Observatory has led to the detection of new interstellar molecular ions, H2O(+), H2Cl(+), and HCl(+), which are important intermediates in the synthesis of water vapor and hydrogen chloride. In this paper, we report new observations of H2O(+) and H2Cl(+) performed with both Herschel and ground-based telescopes, to determine the abundances of their ortho and para forms separately and derive the ortho-to-para ratio. At the achieved signal-to-noise ratio, the observations are consistent with an ortho-to-para ratios of 3 for both H2O(+) and H2Cl(+), in all velocity components detected along the lines-of-sight to the massive star-forming regions W31C and W49N. We discuss the mechanisms that contribute to establishing the observed ortho-to-para ratio and point to the need for a better understanding of chemical reactions, which are important for establishing the H2O(+) and H2Cl(+) ortho-to-para ratios. PMID:23869910

  6. Cholecystocutaneous fistula: an unusual complication of a para-umbilical hernia repair.

    PubMed

    Dixon, Steven; Sharma, Mitesh; Holtham, Stephen

    2014-01-01

    This case describes a 94-year-old woman who presented 2?years postsutured para-umbilical hernia repair with a painful black lump protruding through her scar with blood stained discharge. This was initially thought to be either ischaemic bowel secondary to strangulated incisional hernia or a large organised haematoma. An urgent CT scan was performed following which the patient passed two large calculi and bile-stained fluid spontaneously through the wound, making the diagnosis somewhat clearer. The scan revealed an incisional hernia containing the gallbladder and two large calculi at the skin surface and an incidental large caecal cancer with surrounding lymphadenopathy. Frail health and the incidental finding of a colon cancer rendered invasive surgical management inappropriate. Therefore, she was managed conservatively with antibiotics. A catheter was inserted into the fistula tract to allow free drainage and alleviate pressure-related symptoms. The patient was discharged following a multidisciplinary team discussion. PMID:24862413

  7. A method to obtain a well-defined fraction of respirable para-aramid fibers.

    PubMed

    Schins, R P; Gaudichet, A; Jaurand, M C

    1993-10-01

    We developed a preparation method to obtain respirable-sized fractions of para-aramid fibers. The procedure, based on floatability, consists of stirring and subsequent settling of p-aramid pulp in distilled water. Two distinct phases are obtained, with small fibers in the upper part of the suspension, which represents about 33% of the total volume. Optimal results were obtained when 2.0 g pulp was stirred for 15 hr in 800 ml distilled water containing 0.125% ethanol and settled for 5 hr. The mass yield ranged between 0.4 and 0.6%, more than 90% of the particles had an aspect ratio > or = 3:1. The mean fiber length was about 6 microns, and the mean fiber diameter was about 0.4 microns as determined by transmission and scanning electron microscopy. The number of fibers obtained was 4 x 10(6) fibers/micrograms under our standard conditions. PMID:8119251

  8. [Para-aortic lymphadenectomy in advanced-stage cervical cancer: standard procedure in 2010?].

    PubMed

    Uzan, C; Gouy, S; Pautier, P; Haie-Meder, C; Duvillard, P; Narducci, F; Leblanc, E; Morice, P

    2010-11-01

    With tumour size, node involvement is the most important prognosis factor in advanced stage cervical cancer. Para-aortic (PA) disease is observed in 15 to 30% of these patients. CT scan and magnetic resonance imaging (MRI) are not efficient enough to detect these lesions and PET CT have false negatives. Surgical staging is useful to detect carcinosis associated and to adapt therapy (radiotherapy fields are extended if PA nodes are involved). Laparoscopy was crucial to develop this staging because its morbidity associated to chemoradiotherapy is limited. If prognosis impact of PA lymphadenectomy is well established, therapeutic impact is still discussed. The systematic extension of this staging to pelvic nodes that are included in the basic radiotherapy fields is debated because it does not modify therapeutic management and is morbid. Radiotherapy progress, especially with boost and combination to MRI (MRIT), will impact on future therapeutic management. PMID:20965771

  9. Development of a para-orthohydrogen catalytic converter for a solid hydrogen cooler

    NASA Technical Reports Server (NTRS)

    Nast, T. C.; Hsu, I. C.

    1984-01-01

    Design features of a tested catalytic converter for altering vented cryogenic parahydrogen used as a coolant on spacecraft into a para-ortho equilibrium for channeling to other cooling functions are described. The hydrogen is expected to be stored in either liquid or solid form. A high surface area Ni-on-Si catalyst was selected for tests at an operating pressure of 2 torr at a ratio of 1000 gr catalyst for a gr/sec hydrogen flow. Cylindrical and radial flow geometries were tried and measurements centered on the converter efficiencies at different operating temperatures when the converter was placed in the vent line of the H2 cooler. Efficiencies ranging from 10-100 percent were obtained for varying flow rates. Further testing is necessary to characterize the converter performance under a wider range of operating temperatures and environments.

  10. Poly(para-dioxanone)/inorganic particle composites as a novel biomaterial.

    PubMed

    Bai, Wei; Chen, Dongliang; Zhang, Zhiping; Li, Qing; Zhang, Dujuan; Xiong, Chengdong

    2009-08-01

    In this work, poly(para-dioxanone) (PPDO) was mixed with 1% (by weight) calcium carbonate (CaCO(3)), beta-tricalcium phosphate (beta-TCP), or calcium sulphate dihydrate (CSD) by solution co-precipitation. Samples were compression molded into bars using a platen-vulcanizing press. The morphology, thermal and mechanical properties, and crystalline structure of the composites were investigated using differential scanning calorimetry, polarized optical microscopy, scanning electron microscopy, and X-ray diffraction. All results suggest that three types of inorganic particle in this system promote the crystallinity of PPDO and act as an effective nucleating agent: the relative degree of crystallinity of PPDO increased from 30.74% to 100%, and the crystallization temperature of PPDO was increased by 18 degrees C. On the other hand, the mechanical properties of PPDO were changed by the presence of inorganic particles: the tensile strength of PPDO/CSD increased by 11.46%. PMID:19360890

  11. El Proyecto Sismico "LARSE" - Trabajando Hacia un Futuro con Mas Seguridad para Los Angeles

    USGS Publications Warehouse

    Henyey, Thomas L.; Fuis, Gary S.; Benthien, Mark L.; Burdette, Thomas R.; Christofferson, Shari A.; Clayton, Robert W.; Criley, Edward E.; Davis, Paul M.; Hendley, James W., II; Kohler, Monica D.; Lutter, William J.; McRaney, John K.; Murphy, Janice M.; Okaya, David A.; Ryberg, Trond; Simila, Gerald W.; Stauffer, Peter H.

    1999-01-01

    La region de Los Angeles contiene una red de fallas activas, incluyendo muchas fallas por empuje que son profundas y no rompen la superficie de la tierra. Estas fallas ocultas incluyen la falla anteriormente desconocida que fue responsable por la devastacion que ocurrio durante el terremoto de Northridge en enero de 1994, el terremoto mas costoso en la historia de los Estados Unidos. El Experimento Sismico en la Region de Los Angeles (Los Angeles Region Seismic Experiment, LARSE), esta localizando los peligros ocultos de los terremotos debajo de la region de Los Angeles para mejorar la construccion de las estructuras que pueden apoyar terremotos que son inevitables en el futuro, y que ayudaran a los cientificos determinar donde occurira el sacudimento mas fuerte y poderoso.

  12. Polycrystalline para-terphenyl scintillator adopted in a ?? detecting probe for radio-guided surgery

    NASA Astrophysics Data System (ADS)

    Solfaroli Camillocci, E.; Bellini, F.; Bocci, V.; Collamati, F.; De Lucia, E.; Faccini, R.; Marafini, M.; Mattei, I.; Morganti, S.; Paramatti, R.; Patera, V.; Pinci, D.; Recchia, L.; Russomando, A.; Sarti, A.; Sciubba, A.; Senzacqua, M.; Voena, C.

    2015-06-01

    A radio-guided surgery technique exploiting ?? emitters is under development. It aims at a higher target-to-background activity ratio implying both a smaller radiopharmaceutical activity and the possibility of extending the technique to cases with a large uptake of surrounding healthy organs. Such technique requires a dedicated intraoperative probe detecting ?- radiation. A first prototype has been developed relying on the low density and high light yield of the diphenylbutadiene doped para-therphenyl organic scintillator. The scintillation light produced in a cylindrical crystal, 5 mm in diameter and 3 mm in height, is guided to a photo-multiplier tube by optical fibres. The custom readout electronics is designed to optimize its usage in terms of feedback to the surgeon, portability and remote monitoring of the signal. Tests show that with a radiotracer activity comparable to those administered for diagnostic purposes the developed probe can detect a 0.1 ml cancerous residual of meningioma in a few seconds.

  13. Severe inflammatory and keloidal, allergic reaction due to para-phenylenediamine in temporary tattoos.

    PubMed

    Gunasti, Suhan; Aksungur, Varol Lutfu

    2010-01-01

    Hair coloring with henna has been popular in Turkey for years. In recent years since the tattoos are applied by the street vendors in most of the beach places in Turkey, skin coloring with henna has also increased. Henna can be used alone or in combination with other coloring agents. Henna alone can be safe but due to additives such as para-phenylenediamine (PPD), p-toluenediamine and various essential oils, allergic contact reactions may occur. We report a 22-year-old man who developed severe inflammatory and keloidal, moderately bullous allergic reaction after henna paint-on tattoo. We did a patch test separately with these painting products (henna powder, PPD) and with the European standard series. PPD was strongly positive (+++) on day 2 and remained positive for following days. After treating with topical clobetasol-17 butyrate, resolution was obtained in two weeks. But some keloidal reaction remained. PMID:20228546

  14. The complex dispersion relation of surface plasmon polaritons at gold/ para-hexaphenylene interfaces

    NASA Astrophysics Data System (ADS)

    Lemke, Christoph; Leißner, Till; Klick, Alwin; Fiutowski, Jacek; Radke, Jörn Willers; Thomaschewski, Martin; Kjelstrup-Hansen, Jakob; Rubahn, Horst-Günter; Bauer, Michael

    2014-09-01

    Two-photon photoemission electron microscopy (2P-PEEM) is used to measure the real and imaginary part of the dispersion relation of surface plasmon polaritons at different interface systems. A comparison of calculated and measured dispersion data for a gold/vacuum interface demonstrates the capability of the presented experimental approach. A systematic 2P-PEEM study on the dispersion relation of dielectric-loaded gold surfaces shows how effective the propagation of surface plasmon polaritons at a gold/ para-hexaphenylene interface can be tuned by adjustment of the dielectric film thickness. Deviations of the experimental results from effective index calculations indicate the relevance of thin film peculiarities arising from the details of the growth process and corroborate the need of experimental analysis techniques for dispersion relation measurements.

  15. Ortho and para hydrogen dimers on G/SiC(0001): combined STM and DFT study.

    PubMed

    Merino, P; Švec, M; Martínez, J I; Mutombo, P; Gonzalez, C; Martín-Gago, J A; de Andres, P L; Jelinek, P

    2015-01-13

    The hydrogen (H) dimer structures formed upon room-temperature H adsorption on single layer graphene (SLG) grown on SiC(0001) are addressed using a combined theoretical-experimental approach. Our study includes density functional theory (DFT) calculations for the full (6?3 × 6?3)R30° unit cell of the SLG/SiC(0001) substrate and atomically resolved scanning tunneling microscopy images determining simultaneously the graphene lattice and the internal structure of the H adsorbates. We show that H atoms normally group in chemisorbed coupled structures of different sizes and orientations. We make an atomic scale determination of the most stable experimental geometries, the small dimers and ellipsoid-shaped features, and we assign them to hydrogen adsorbed in para dimers and ortho dimers configuration, respectively, through comparison with the theory. PMID:25486105

  16. Analysis of the thermal reaction products of para polyphenylene by combined gas chromatography-mass spectrometry

    NASA Technical Reports Server (NTRS)

    Fewell, L. L.

    1976-01-01

    Analysis of the volatiles and sublimate produced when para-polyphenylene is pyrolyzed to constant weight under vacuum in the temperature range from 380 to 1000 C indicates that the polymer undergoes thermal degradation in two stages. The first stage involved dehydrohalogenation, which is essentially a curing reaction that produces crosslinking between polyphenylene chains resulting from the loss of chlorine from the polymer in the form of hydrogen chloride. The second stage of the thermal degradation is dehydrogenation because hydrogen is the major volatile species. Increasing amounts of polycyclic aromatic hydrocarbons (phenanthrene and 9, 10 benzphenanthrene) in the sublimate, concomitant with increasing C/H ratios of the polymeric residue with pyrolysis temperature, is consistent with the buildup of polynuclear structures in the polymer matrix.

  17. Stenting for proximal para-anastomotic stenosis of an infrarenal aortic bypass graft.

    PubMed

    Ramaiah, Venkatesh; Thompson, Charles; Harvey, Adrian; Rodriguez, Julio A; Diethrich, Edward B

    2002-01-01

    We present a case in which endovascular stenting was used for recurrent proximal para-anastomotic stenosis 11 years after aorto-bi-iliac bypass grafting for severe aorto-iliac occlusive disease. A 55-year-old woman presented with worsening bilateral hip and buttock claudication. At presentation, her resting ankle-brachial indices were 0.87 bilaterally and decreased to 0.39 on the right and 0.40 on the left with exercise. Aortography demonstrated a proximal para-anastomotic aortic graft stenosis without distal outflow obstruction, patent superficial femoral arteries, and good triple-vessel runoff bilaterally The stenosis was dilated with a 9- x 4-cm OPTA balloon angioplasty catheter. A Palmaz stent (P424, Cordis) was mounted on a 10- x 4-cm OPTA balloon catheter and deployed across the proximal stenosis. Completion arteriography confirmed adequate placement and reduction in the degree of stenosis. There was no pressure gradient across the proximal anastomosis. At our patient's 1-week follow-up visit, her resting ankle-brachial indices were both greater than 1.0 and her exercise ankle-brachial indices were 1.0 bilaterally She remained asymptomatic at 13 months. Most late sequelae of aortic graft surgery involve the distal anastomosis and are resolved surgically without complicated techniques. However, revision at the proximal anastomosis involves the aorta directly and therefore requires open abdominal dissection and aortic cross-clamping. Percutaneous aortic stenting for primary aortoiliac disease has been shown to reduce operative time, cost, and hospital stays, to improve patency and to be durable. Our clinical experience with aortic stenting for primary disease led us to consider this procedure for recurrent proximal stenosis. PMID:11995850

  18. PREVENCION DE VIH PARA MUJERES HISPANAS DE 50 AÑOS Y MÁS

    PubMed Central

    Villegas, N.; Cianelli, R.; Ferrer, L.; Kaelber, L.; Peragallo, N.; Yaya, Alexandra O.

    2012-01-01

    Introducción Las mujeres Hispanas de 50 años y más (MHC) son una minoría en Estados Unidos que está a elevado riesgo de adquirir VIH y son el grupo menos estudiado en lo que respecta a salud, características sociales y de comportamiento sexual. Objetivo Investigar los factores que incrementan el riesgo de VIH en las MHC con el propósito de desarrollar o adaptar una intervención apropiada para la “edad y la cultura "de este grupo de mujeres. Metodología Estudio descriptivo de corte transversal con una muestra de 50 MHC, sexualmente activas y que residían en Miami, Florida, Estados Unidos. Se utilizó un cuestionario estructurado administrado por entrevistadores entrenados y bilingües (inglés/español). Las participantes fueron reclutadas en diferentes lugares en el Sur de Florida. Para el análisis de los datos se utilizó estadística descriptiva, tanto medidas de tendencia central como medidas de dispersión. Resultados La edad promedio de las MHC fue de 55,7 ± 6 años (rango 50–76 años). Todas las MHC estaban en la menopausia. Prevención del VIH Las MHC reportaron niveles medios de conocimientos sobre VIH y comunicación con la pareja. En la muestra se reportó la presencia de síntomas depresivos, violencia en la pareja, actitudes negativas hacia las personas viviendo con VIH y baja percepción de riesgo de adquirir VIH. Las MHC mencionaron necesidades de aprendizaje en tópicos relacionados con prevención de VIH y cambios de la edad. Conclusión Las MHC están a riesgo de adquirir VIH y tienen necesidades especiales en términos de educación sobre prevención de VIH. PMID:25242862

  19. Constraining the ortho-to-para ratio of H2 with anomalous H_2CO absorption

    NASA Astrophysics Data System (ADS)

    Troscompt, N.; Faure, A.; Maret, S.; Ceccarelli, C.; Hily-Blant, P.; Wiesenfeld, L.

    2009-11-01

    Context: The ortho-to-para ratio (OPR) of molecular hydrogen is a fundamental parameter in understanding the physics and chemistry of molecular clouds. In dark and cold regions, however, H2 is not directly observable and the OPR of H2 in these sources has so far remained elusive. Aims: We show that the 6 cm absorption line of ortho-formaldehyde (H2CO) can be employed to constrain both the density and the OPR of H2 in dark clouds. Methods: Green Bank Telescope (GBT) observations of ortho-H2CO toward the molecular cloud Barnard 68 (B68) are reported. Non-LTE radiative transfer calculations combined with the well-constrained structure of B68 are then employed to derive the physical conditions in the absorption region. Results: We provide the first firm confirmation of the Townes & Cheung mechanism: propensity rules for the collisions of H2CO with H2 molecules are responsible for the sub-2.7 K cooling of the 6 cm doublet. Non-LTE calculations show that in the absorption region of B68, the kinetic temperature is ˜ 10 K, the ortho-H2CO column density amounts to ˜ 2.2× 1013 cm-2, the H2 density is in the range 1.4{-}2.4× 10 4 cm-3, and the OPR of H2 is close to zero. Our observations thus provide fresh evidence that H2 is mostly in its para form in the cold gas, as expected from theoretical considerations. Our results also suggest that formaldehyde absorption originates in the edge of B68, at visual extinctions A_V? 0.5 mag. This work has been inspired by our colleague and friend Pierre Valiron, who passed away in August 2008. This paper is dedicated to his memory.

  20. Uso de modelos mecânicos em curso informal de astronomia para deficientes visuais. Resgate de uma experiência

    NASA Astrophysics Data System (ADS)

    Tavares, E. T., Jr.; Klafke, J. C.

    2003-08-01

    O presente trabalho propõe-se a resgatar uma experiência que teve lugar no Planetário de São Paulo nos anos 60. Em 1962, o Sr. Acácio, então com 37 anos, deficiente visual desde os 27, passou a assistir às aulas ministradas pelo Prof. Aristóteles Orsini aos integrantes do corpo de servidores do Planetário. O Sr. Acácio era o único deficiente da turma e, embora possuísse conhecimentos básicos e relativamente avançados de matemática, enfrentava dificuldades na compreensão e acompanhamento da exposição, como também em estudos posteriores. Com o intuito de auxiliá-lo na superação desses problemas, o Prof. Orsini solicitou a construção de modelos mecânicos que, através do sentido do tato, permitissem o acompanhamento das aulas e a transposição do modelo para o "constructo" mental. Essa prática mostrou-se tão eficaz que facilitou sobejamente o aprendizado da matéria pelo sujeito. O Sr. Acácio passou a integrar o corpo de professores do Planetário/Escola Municipal de Astrofísica, tendo ficado responsável pelo curso de "Introdução à Astronomia" por vários anos. Além disso, a experiência foi tão bem sucedida que alguns dos modelos tiveram seus elementos constitutivos pintados diferencialmente para serem utilizados em cursos regulares do Planetário, tornando-se parte integrante do conjunto de recursos didáticos da instituição. É pensando nessa eficácia, tanto em seu objetivo original permitir o aprendizado de um deficiente visual quanto no subsidiário recurso didático sistemático da instituição que decidimos resgatar essa experiência. Estribados nela, acreditamos ser extremamente produtivo, em termos educacionais, o aperfeiçoamento dos modelos originais, agora resgatados e restaurados, e a criação de outros que pudessem ser utilizados no ensino dessa ciência a deficientes visuais.

  1. The analysis of para-cresol production and tolerance in Clostridium difficile 027 and 012 strains

    PubMed Central

    2011-01-01

    Background Clostridium difficile is the major cause of antibiotic associated diarrhoea and in recent years its increased prevalence has been linked to the emergence of hypervirulent clones such as the PCR-ribotype 027. Characteristically, C. difficile infection (CDI) occurs after treatment with broad-spectrum antibiotics, which disrupt the normal gut microflora and allow C. difficile to flourish. One of the relatively unique features of C. difficile is its ability to ferment tyrosine to para-cresol via the intermediate para-hydroxyphenylacetate (p-HPA). P-cresol is a phenolic compound with bacteriostatic properties which C. difficile can tolerate and may provide the organism with a competitive advantage over other gut microflora, enabling it to proliferate and cause CDI. It has been proposed that the hpdBCA operon, rarely found in other gut microflora, encodes the enzymes responsible for the conversion of p-HPA to p-cresol. Results We show that the PCR-ribotype 027 strain R20291 quantitatively produced more p-cresol in-vitro and was significantly more tolerant to p-cresol than the sequenced strain 630 (PCR-ribotype 012). Tyrosine conversion to p-HPA was only observed under certain conditions. We constructed gene inactivation mutants in the hpdBCA operon in strains R20291 and 630?erm which curtails their ability to produce p-cresol, confirming the role of these genes in p-cresol production. The mutants were equally able to tolerate p-cresol compared to the respective parent strains, suggesting that tolerance to p-cresol is not linked to its production. Conclusions C. difficile converts tyrosine to p-cresol, utilising the hpdBCA operon in C. difficile strains 630 and R20291. The hypervirulent strain R20291 exhibits increased production of and tolerance to p-cresol, which may be a contributory factor to the virulence of this strain and other hypervirulent PCR-ribotype 027 strains. PMID:21527013

  2. La vivienda urbana como espacio social, económico y privado, e instrumento para la movilidad social. El ejemplo de artesanos y comerciantes en la Murcia del siglo XVII

    Microsoft Academic Search

    Pedro Miralles Martínez

    2007-01-01

    Artesanos y mercaderes residían en un espacio urbano debido a las características de su trabajo, pero el lugar de residencia también fue utilizado, especialmente por los mercaderes, como estrategia para la movilidad social; para ambos grupos constituyó un lugar predilecto para las relaciones sociales. Las estrategias de sociabilidad coadyuvan a esa finalidad. \\u000a\\u000aLa vivienda y el hogar desempeñan varias funciones:

  3. Rotational excitation of 45 levels of ortho/para-H2O by excited ortho/para-H2 from 5 K to 1500 K: state-to-state, effective, and thermalized rate coefficients

    NASA Astrophysics Data System (ADS)

    Daniel, F.; Dubernet, M.-L.; Grosjean, A.

    2011-12-01

    Aims: This work deals with the rotational excitation of ortho/para-H2O with para/ortho-H2 so that thermalized de-(excitation) rate coefficients up to 1500 K for the first 45th level of ortho/para-H2O are provided. Results are available in BASECOL with state-to-state rate coefficients, their fitting coefficients, and effective rate coefficients. In addition, we provide a routine that combines all data in order to create thermalized rate coefficients. Methods: Calculations were performed with the close coupling (CC) method over the whole energy range, using the same 5D potential energy surface (PES) as the one employed in previous papers. The current CC results were compared with thermalized quasi-classical trajectory (QCT) calculations using the same PES and with previous quantum calculations obtained between T = 20 K and T = 140 K with a different PES. The relative strengths of water excitation rate coefficients when water is excited with ortho-H2 versus para-H2 was also analyzed. Results: For collision with para-H2, the rotation-rotation process is found to be the dominant process for inelastic transfer for some water transitions, implying that calculations must include the j2 = 2 level. An important result of this paper is that j2 = 1 and j2 = 2 effective rate coefficients are very similar so that either j2 = 1 or j2 = 2 need to be calculated for astrophysical applications. In addition, at high temperature ratios of j2 = 2 (1) over j2 = 0, effective rate coefficients converge towards one to within a few percent. This study confirms that j2 = 3 effective rate coefficients are within 20% to j2 = 1 effective rate coefficients. Conclusions: For astrophysical applications, these results imply that future collisional excitation of light molecules with H2 should be carried out with para-H2, including j2 = 2, so as to obtain correct effective j2 = 0 effective rate coefficients and using the j2 = 2 effective rate coefficients for all excited j2 effective rate coefficients. In contrast, collisional excitation of heavy molecules with H2 might be restricted to para-H2 with j2 = 0 and to ortho-H2 with j2 = 1, using the j2 = 1 rate coefficients for all excited j2 effective rate coefficients. These conclusions should simplify the future methodological choice for collisional excitation calculations applied to interstellar/circumstellar media.

  4. Autobiographical and semantic memory of adolescent drug users Memória autobiográfica e semântica em adolescentes usuários de drogas

    Microsoft Academic Search

    Christian César

    Background: Psychiatric disorders in infancy and adolescence may impair the access to the memory of facts and events occurred during these periods. Objective: The main purpose of this study was to investigate the autobiographi- cal and semantic memory of a group of adolescent drug users and a control group of adolescent non-users. Methods: Twenty-five males participated in each group between

  5. Aplicación de un modelo de calidad para evaluar experiencias e-learning en el Espacio Europeo Universitario1

    Microsoft Academic Search

    Elena Ejarque González; Félix Buendía García

    Resumen Durante los últimos años, las comunidades universitarias han dedicado grandes esfuerzos para integrar nuevas tecnologías a fin de mejorar sus procesos de aprendizaje. En este sen- tido, la mayoría de las universidades europeas han incorporado plataformas de e-learning que sirven de apoyo y complementan el modelo clásico de enseñanza. Sin embargo, la uti- lización de estas plataformas no siempre

  6. Esquema Hibrido para Amostragem de Mapas de Iluminac~ao em renderizac~oes foto-realistas

    E-print Network

    Esquema H´ibrido para Amostragem de Mapas de Iluminac¸~ao em renderizac¸~oes foto-realistas Aldo R¸~ao foto- realista com mapas de iluminac¸~ao provenientes de cenas reais. Desenvolvemos um sistema que¸~ao gr´afica. Atual- mente a renderizac¸~ao foto-realista de cenas sint´eticas com iluminac

  7. PLASMA CLEARANCE OF VITELLOGENIN IN SHEEPSHEAD MINNOWS AFTER CESSATION OF EXPOSURE TO 17BETA-ESTRADIOL AND PARA-NONYLPHENOL

    EPA Science Inventory

    Two experiments were performed to determine the rate of vitellogenin plasma accumulation and clearance in male sheepshead minnows (Cyprinodon variegatus) during and after exposure to either 17b-estradiol (E2) or para-nonylphenol (p-NP). Adult fish were continuously exposed to aqu...

  8. El uso de Google Earth para el estudio de la arquitectura hospitalaria (II): los hospitales cruciformes, radiales y pabellonarios

    Microsoft Academic Search

    Quim Bonastra; Gerard Jori

    2009-01-01

    Tras casi quince años de funcionamiento, Google Earth se ha convertido en una herramienta de gran utilidad para la investigación y enseñanza de las ciencias sociales y naturales. La geografía, que tiene la superficie terrestre como principal objeto de estudio, no ha permanecido al margen de este fenómeno, y cada vez es mayor el número de geógrafos que utilizan esta

  9. El uso de Google Earth para el estudio de la arquitectura hospitalaria (I): de los asclepiones a los hospitales medievales

    Microsoft Academic Search

    Quim Bonastra; Gerard Jori

    2009-01-01

    Tras casi quince años de funcionamiento, Google Earth se ha convertido en una herramienta de gran utilidad para la investigación y enseñanza de las ciencias sociales y naturales. La geografía, que tiene la superficie terrestre como principal objeto de estudio, no ha permanecido al margen de este fenómeno, y cada vez es mayor el número de geógrafos que utilizan esta

  10. Relao entre os desastres naturais e as anomalias de precipitao para a regio Sul do Daniela Wancura Barbieri 1

    E-print Network

    Relação entre os desastres naturais e as anomalias de precipitação para a região Sul do Brasil da Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brasil daniela Postal 5021 - CEP: 97110-970, Santa Maria, RS, Brasil {camila.ferreira; silvia.saito; tania.sausen; marco

  11. Malaria: a un paso del fin Para el investigador Quique Bassat hablar de "erradicacin" es posible a largo plazo

    E-print Network

    Geffner, Hector

    1 Malaria: a un paso del fin Para el investigador Quique Bassat hablar de "erradicación" es posible a largo plazo "Tras un fuerte ataque de malaria la persona se convierte en una piltrafa humana, yace. Según la OMS, la malaria, conocida también como paludismo, afecta cada año a unos 210 millones de

  12. Estudios de la Facultad de Derecho Informacin sobre PREINSCRIPCIN y MATRCULA para el curso 2014-2015

    E-print Network

    Escolano, Francisco

    Estudios de la Facultad de Derecho Información sobre PREINSCRIPCIÓN y MATRÍCULA para el curso 2014 · DERECHO · DERECHO-ADE (DADE) · DERECHO-CRIMINOLOGÍA (DECRIM) · GESTIÓN Y ADMINISTRACIÓN PÚBLICA Universitario en Derecho Ambiental y de la Sostenibilidad · Doctorado en Derecho · Curso de experto en Derecho

  13. IMPLEMENTAC ~AO PARALELA DA LOCALIZAC ~AO DE MONTE CARLO PARA ROB^OS MOVEIS EM GPUS COMERCIAIS

    E-print Network

    Chaimowicz, Luiz

    IMPLEMENTAC¸ ~AO PARALELA DA LOCALIZAC¸ ~AO DE MONTE CARLO PARA ROB^OS M´OVEIS EM GPUS COMERCIAIS localiza¸c~ao de Monte Carlo (MCL) em GPUs (Graphics Processing Units). A capacidade de se localizar em¸c~ao principal foi o de prover estimativas de pose que fossem mais r´apidas e mais precisas em tempo real aos rob

  14. CINCIA PROTESTO EM LISBOA CONTRA REDUO NAATRIBUIO DE BOLSAS Bolseiros de investigao marcam novo protesto para dia 29, na Assembleia

    E-print Network

    Instituto de Sistemas e Robotica

    CIÊNCIA ¦ PROTESTO EM LISBOA CONTRA REDUÇÃO NAATRIBUIÇÃO DE BOLSAS Bolseiros de investigação marcam- mento epós-doutoramento. O novo protesto está marcado para o dia em que será discutido no Parlamento um manifestação de ontem, que reu- niu cerca de 200 in- vestigadores em Lisboa, os manifes- tantes concentra- ram

  15. PERSPECTIVAS TEÓRICAS USADAS PARA EL ESTUDIO DE LA RESPONSABILIDAD SOCIAL EMPRESARIAL: UNA CLASIFICACIÓN EN BASE A SU RACIONALIDAD

    Microsoft Academic Search

    ALEJANDRO ALVARADO HERRERA; ENRIQUE BIGNÉ ALCAÑIZ; RAFAEL CURRÁS PÉREZ

    2011-01-01

    Mediante la exploración en profundidad de la literatura relevante de los últimos treinta y ocho años, este trabajo pretende dos objetivos principales. Primero, identificar, revisar y sintetizar las teorías empleadas en la literatura para el estudio de la Responsabilidad Social Empresarial (RSE), exponiendo tanto sus preceptos fundamentales como las principales críticas a que se han visto sujetas. Segundo, se pretende

  16. Para mayor informacin sobre E-Verify, favor ponerse en contacto con la oficina del DHS llamando al

    E-print Network

    Para mayor información sobre E-Verify, favor ponerse en contacto con la oficina del DHS llamando al necesario, al Departamento de Seguridad Nacional (DHS), información obtenida del Formulario I-9 contacto con la oficina del SSA y, o el DHS antes de tomar una determinación adversa en contra suya

  17. H2Doc Programa doutoral em Hidrulica Ambiental e Hidrologia Aviso de Abertura de Concurso para Atribuio de

    E-print Network

    Lisboa, Universidade Técnica de

    H2Doc ­ Programa doutoral em Hidráulica Ambiental e Hidrologia Aviso de Abertura de Concurso para Atribuição de Bolsas Individuais de Doutoramento. O programa doutoral H2Doc ­ Hidráulica Ambiental e membros pertinentes da Comissão Directiva Alargada do programa doutoral H2Doc, nomeadamente pelo diretor

  18. Etnografía acelerada para transformar normas sociales sobre género y sexualidad en hombres puertorriqueños heterosexuales1,2

    PubMed Central

    Ortiz-Torres, Blanca; Rivera-Ortiz, Rafael J.; Mendoza, Sigrid

    2014-01-01

    Resumen La construcción de roles de género dominantes contribuyen al riesgo de contraer VIH, y por tal razón se ha urgido a que se integren las normas sociales relativas al género en las intervenciones preventivas del VIH. Este estudio pretende adaptar y desarrollar una intervención que facilite la transformación de normas sociales del género y de prácticas sexuales en hombres puertorriqueños. La intervención propone transformar normas sociales relacionadas al género y sexualidad en barras comunitarias utilizando el modelo de líderes de opinión. Luego de ser elegidos/as, los/as líderes de opinión diseminan mensajes integrando la importancia de relaciones equitativas entre parejas para la prevención del VIH. La primera fase de esta intervención es discutida en este artículo, la cual incluye un proceso de etnografía acelerada para identificar los escenarios comunitarios en los que podemos desarrollar esta intervención y permitirnos entender la cultura de las barras comunitarias. A partir de las observaciones etnográficas, pudimos: desarrollar un protocolo de seguridad para realizar las observaciones, desarrollar un perfil de la cultura de las barras, elegir las barras a participar en las dos condiciones del estudio y adaptar los instrumentos de la intervención para que respondieran a la particularidad de los/as participantes. PMID:25530828

  19. Beneficios privados y beneficios sociales en la cadena de la manzana para la exportación en el Uruguay

    Microsoft Academic Search

    Catalina Rava; Bruno A. Lanfranco; Bruno Ferraro

    2011-01-01

    Este trabajo analizó el desempeño de la cadena exportadora de manzana para consumo en fresco, en Uruguay, mediante el método de la matriz de análisis de políticas (MAP). Se trabajó con la variedad Royal Gala, una de las más exportadas localmente por su temprana maduración y su buena aceptación en mercados de valor, como el europeo. Se cuantificaron los efectos

  20. Identificación de oportunidades de mercado y mercadeo con un Enfoque Multi - Cadena para productos agroforestales de Alto Beni, Bolivia

    Microsoft Academic Search

    Julio Cesar Muñoz Espinoza

    Este estudio procura brindar oportunidades de diversificación a los productores cacaoteros de Alto Beni, Bolivia. Los productores cacaoteros se suman en 800 familias afiliadas a la cooperativa El Ceibo, que ha estado brindando facilidades para el acopio y la agregación de valor al cacao, pero que sin embargo, no ha logrado lanzar otros productos que puedan hacerle frente a variantes