Science.gov

Sample records for madsa matriz para

  1. STATUS ACTUAL DE LOS REFRACTARIOS EN VENEZUELA: MATRIZ F-O-D-A Y PERSPECTIVAS FUTURAS

    E-print Network

    Vásquez, Carlos

    STATUS ACTUAL DE LOS REFRACTARIOS EN VENEZUELA: MATRIZ F-O-D-A Y PERSPECTIVAS FUTURAS Delia, Dept. de Ciencia de los Materiales, Caracas, Venezuela * dgutierr@usb.ve RESUMEN La industria manufacturera de materiales refractarios en Venezuela tiene más de 50 años. Entre las décadas del 60 y del 90

  2. Problemas para dormir

    Cancer.gov

    Dormir bien es importante para su salud fsica y mental. Un buen sueo en la noche no solo le ayuda a pensar claramente, tambin le baja su presin arterial, ayuda su apetito y fortalece su sistema inmunitario.

  3. ParaSITE

    E-print Network

    Rakowitz, Michael

    1998-01-01

    paraSITE proposes the appropriation of exterior ventilation systems on existing architecture to inflate pneumatic shelters that are designed for homeless people. This project involves the production of a series of inflatable ...

  4. Tiempo para un cambio

    NASA Astrophysics Data System (ADS)

    Woltjer, L.

    1987-06-01

    En la reunion celebrada en diciembre dei ano pasado informe al Consejo de mi deseo de terminar mi contrato como Director General de la ESO una vez que fuera aprobado el proyecto dei VLT, que se espera sucedera hacia fines de este aAo. Cuando fue renovada mi designacion hace tres aAos, el Consejo conocia mi intencion de no completar los cinco aAos dei contrato debido a mi deseo de disponer de mas tiempo para otras actividades. Ahora, una vez terminada la fase preparatoria para el VLT, Y habiendose presentado el proyecto formalmente al Consejo el dia 31 de marzo, y esperando su muy probable aprobacion antes dei termino de este ano, me parece que el 10 de enero de 1988 presenta una excelente fecha para que se produzca un cambio en la administracion de la ESO.

  5. Certificao Sun Para Programador

    E-print Network

    meio ambiente Misto de avião e pássaro, robô pousa na mão Robô cultiva cartilagens para transplantes Energia Espaço Informática Materiais Mecânica Meio ambiente Nanotecnologia Robótica Plantão Modelio System

  6. Fundao para a Cincia com

    E-print Network

    Instituto de Sistemas e Robotica

    Fundao para a Cincia com menos dinheiro em 2014 // PGS. 2-3 #12;No prximo ano vai haver menos dinheiro para bolsas e projectos de investigao EDUARDO MARTINS Oramento. Fundao para a Cincia com menos dinheiro em 2014 Governo assumiu como "objectivo estratgico" na rea da cincia reforar

  7. Prmio para trs novas aplicaes

    E-print Network

    Instituto de Sistemas e Robotica

    Prmio para trs novas aplicaes Tecnologia. A "wiride" venceu o "Lisbon Big Apps", concurso de Instituto Superior Tcnico que desenvolveu o projeto, citada pelo/dAT, a "wiride" uma nova forma de andar

  8. Tomografa computarizada (TC) y exploraciones para cncer

    Cancer.gov

    Hoja informativa que describe el procedimiento y la tecnologa de exploraciones con tomografa computarizada as como sus usos para el diagnstico, para exmenes de deteccin y para tratamiento del cncer.

  9. Separating para and ortho water.

    PubMed

    Horke, Daniel A; Chang, Yuan-Pin; D?ugo??cki, Karol; Kpper, Jochen

    2014-10-27

    Water exists as two nuclear-spin isomers, para and ortho, determined by the overall spin of its two hydrogen nuclei. For isolated water molecules, the conversion between these isomers is forbidden and they act as different molecular species. Yet, these species are not readily separated, and no pure para sample has been produced. Accordingly, little is known about their specific physical and chemical properties, conversion mechanisms, or interactions. The production of isolated samples of both spin isomers is demonstrated in pure beams of para and ortho water in their respective absolute ground state. These single-quantum-state samples are ideal targets for unraveling spin-conversion mechanisms, for precision spectroscopy and fundamental symmetry-breaking studies, and for spin-enhanced applications, for example laboratory astrophysics and astrochemistry or hypersensitized NMR experiments. PMID:25196938

  10. Oficina para Prcticas Externas y Orientacin para el Empleo (OPE) CONVOCATORIA DEL AO 2015 PARA PRCTICAS REMUNERADAS DE LA OPE

    E-print Network

    Autonoma de Madrid, Universidad

    medios de comunicacin para mejorar su visibilidad - Planteamiento de planes de medios eficientes de las para poder realizar las funciones encomendadas vinculadas al rea de comunicacin de la UAM CRITERIOS

  11. Oficina para Prcticas Externas y Orientacin para el Empleo (OPE) CONVOCATORIA DEL AO 2015 PARA PRCTICAS REMUNERADAS DE LA OPE

    E-print Network

    Autonoma de Madrid, Universidad

    cursos gratuitos que el Centro Regional de #12;Oficina para Prcticas Externas y Orientacin para el) FORMACIN A RECIBIR: - Curso interno "Atencin al pblico y al estudiante en particular. Tcnicas y habilidades para una correcta ejecucin". - Curso interno "Unidades y servicios de la UAM dirigidos

  12. Requisitos para utilizar el enlace | Smokefree Espaol

    Cancer.gov

    Espanol.smokefree.gov ofrece apoyo y recursos para norteamericanos que hablan espaol y quieren dejar de fumar. Este sitio en la red fue creada por la Divisin de Investigacin para el Control del Tabaco del Instituto Nacional del Cncer.

  13. Estudios ALCHEMIST para el cncer de pulmn

    Cancer.gov

    Conjunto de informacin sobre los estudios ALCHEMIST para el cncer de pulmn, los cuales examinarn los tejidos de tumores de pacientes con cncer de pulmn en estadio inicial para detectar mutaciones genticas en genes EGFR y ALK.

  14. SPOJ Problem Set (seletivas) 1763. Sudoku

    E-print Network

    SPOJ Problem Set (seletivas) 1763. Sudoku Problem code: SUDOIME O jogo de Sudoku espalhou, entretanto, preenchem a matriz de forma incorreta, desrespeitando as restriçoes do jogo. Sua tarefa neste. A matriz do jogo é uma matriz de inteiros 9 x 9 . Para ser uma soluçao do problema, cada linha e coluna

  15. Oficina para Prcticas Externas y Orientacin para el Empleo (OPE) CONVOCATORIA DEL AO 2015 PARA PRCTICAS REMUNERADAS DE LA OPE

    E-print Network

    Autonoma de Madrid, Universidad

    (principalmente OTOO y PRIMAVERA) * actualizacin de las bases de datos de emprendedores. (ANUAL) * al al Emprendedor Universitario, apoyando el trabajo administrativo y de coordinacin necesario para su

  16. Centro para la Salud Mundial del NCI anuncia becas de investigacin para tecnologas porttiles

    Cancer.gov

    El Centro para la Salud Mundial del NCI (CGH) anunci el otorgamiento de subvenciones que apoyarn el desarrollo y la validacin de tecnologas porttiles y de bajo costo para mejorar la deteccin temprana, el diagnstico y el tratamiento del cncer.

  17. Fundo Global para o Meio Ambiente

    E-print Network

    #12;#12;Fundo Global para o Meio Ambiente Global Environment Facility Avaliao dos Recursos de Climticos Center for Weather Forecasts and Climate Studies Programa das Naes Unidas para o Meio Ambiente Fernando Ramos Martins Samuel Luna de Abreu Ricardo Rther Realizao Diviso de Clima e Meio Ambiente

  18. Delirio (PDQ)Versin para pacientes

    Cancer.gov

    Resumen de informacin revisada por expertos acerca del delirio como una complicacin del cncer o su tratamiento. Se tratan enfoques de los cuidados mdicos de apoyo y los abordajes farmacolgicos para el manejo del delirio.

  19. NeuroblastomaVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento y los exmenes de deteccin del neuroblastoma, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  20. 38% dos jovens no tm dinheiro para

    E-print Network

    Instituto de Sistemas e Robotica

    38% dos jovens no tm dinheiro para continuar a estudar Estudantes no so bem informados sobre continuar a estu- dar porque "por um lado, no tem dinheiro e, por outro lado, porque sente que no ter

  1. Endoscopic para-thyroidectomy: a new approach.

    PubMed

    Aziz, M M; Khan, A W; Uddin, M F; Hasanat, M A; Kader, M A; Chowdhury, A J; Choudhury, N A

    2010-07-01

    Two patients (one male and one female) underwent endoscopic para-thyroidectomy for parathyroid adenoma at the Department of Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh. Three ports (one mid line and two laterals) were employed, a 10 mm telescope was used for the visualization and a harmonic scalpel was used for the dissection. To the best of our knowledge, there was no report of endoscopic para-thyroidectomy from Bangladesh. Both patients were fed on the first post operative day and discharged from the 4th and 8th operative day. Both patient's parathyroid hormone (PTH) level dropped to about one fourth the level in 12 to 20 minutes after enucleation (as compared to the immediate pre operative level). Endoscopic para-thyroidectomy appears to be a technically feasible patient friendly modality of treatment for the selected cases of para-thyroid pathology in experienced hand with excellent cosmetic outcome. PMID:20639842

  2. LeucemiaVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento de la leucemia, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas relacionados con este tipo de cncer.

  3. LinfomaVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del linfoma, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas relacionados con este tipo de cncer.

  4. RetinoblastomaVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del retinoblastoma, as como referencias a estudios clnicos, estadsticas y otros temas relacionados con este tipo de cncer.

  5. Fatiga (PDQ)Versin para pacientes

    Cancer.gov

    Resumen de informacin revisada por expertos acerca de la fatiga, una afeccin caracterizada por extremo cansancio e incapacidad para funcionar por la falta de energa, que a menudo se observa como una complicacin del cncer y su tratamiento.

  6. Consejos para pacientes que reciben radioterapia

    Cancer.gov

    Serie de nueve (9) hojas sobre los efectos secundarios de la radioterapia. Cada hoja contiene recomendaciones y sugerencias prcticas para ayudarle a controlar los efectos secundarios durante la radioterapia, y a que se sienta mejor durante el tratamiento.

  7. ARQUITECTURA PARA LA DISTRIBUCIN DE DOCUMENTOS

    E-print Network

    Navarro Moldes, Leandro

    T E S I S ARQUITECTURA PARA LA DISTRIBUCIN DE DOCUMENTOS EN UN SISTEMA DISTRIBUIDO A GRAN ESCALA: ARQUITECTURA Y TECNOLOGA DE COMPUTADORES BARCELONA, OCTUBRE DE 2002 #12;Dr. President Dr. Secretari Dr. Vocal

  8. 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

  9. Laparoscopic extraperitoneal para-aortic lymphadenectomy

    PubMed Central

    Iserte, Pablo Padilla; Minig, Lucas; Zorrero, Cristina

    2015-01-01

    Lymph nodes are the main pathway in the spread of gynaecological malignancies, being a well-known prognostic factor. Lymph node dissection is a complex surgical procedure and requires surgical expertise to perform the procedure, thereby minimising complications. In addition, lymphadenectomy has value in the diagnosis, prognosis, and treatment of patients with gynaecologic cancer. Therefore, a video focused on the para-aortic retroperitoneal anatomy and the surgical technique of the extraperitoneal para-aortic lymphadenectomy is presented. PMID:26435746

  10. DMA IMECC UNICAMP MATRIZES 1o Sem / 2009

    E-print Network

    Andreani, Roberto

    ), Vr = (v1, . . . , vr) e ~Vr = (vr+1, . . . , vn). Mostre que (a) A = r i=1 iuivT i (b) Nu(A) = span{vr+1, . . . , vn} (c) Im(A) = span{u1, . . . , vr} (d) A F = ( r i=1 2 i ) 1 2 (e) A = r i=1 -1 i viuT i (f) VrV T r ´e o projetor sobre o Im(AT ) (g) ~Vr ~V T r e o projetor sobre o Nu(A) (h) UrUT r ´e

  11. Oficina para Prcticas Externas y Empleabilidad (OPE) CONVOCATORIA ORDINARIA DEL AO 2016 PARA PRCTICAS REMUNERADAS DE

    E-print Network

    Autonoma de Madrid, Universidad

    OTOO y PRIMAVERA) * actualizacin de las bases de datos de emprendedores. (ANUAL) * al funcionamiento Emprendedor Universitario, apoyando el trabajo administrativo y de coordinacin necesario para su correcto

  12. The ParaScope parallel programming environment

    NASA Technical Reports Server (NTRS)

    Cooper, Keith D.; Hall, Mary W.; Hood, Robert T.; Kennedy, Ken; Mckinley, Kathryn S.; Mellor-Crummey, John M.; Torczon, Linda; Warren, Scott K.

    1993-01-01

    The ParaScope parallel programming environment, developed to support scientific programming of shared-memory multiprocessors, includes a collection of tools that use global program analysis to help users develop and debug parallel programs. This paper focuses on ParaScope's compilation system, its parallel program editor, and its parallel debugging system. The compilation system extends the traditional single-procedure compiler by providing a mechanism for managing the compilation of complete programs. Thus, ParaScope can support both traditional single-procedure optimization and optimization across procedure boundaries. The ParaScope editor brings both compiler analysis and user expertise to bear on program parallelization. It assists the knowledgeable user by displaying and managing analysis and by providing a variety of interactive program transformations that are effective in exposing parallelism. The debugging system detects and reports timing-dependent errors, called data races, in execution of parallel programs. The system combines static analysis, program instrumentation, and run-time reporting to provide a mechanical system for isolating errors in parallel program executions. Finally, we describe a new project to extend ParaScope to support programming in FORTRAN D, a machine-independent parallel programming language intended for use with both distributed-memory and shared-memory parallel computers.

  13. Recursos para los estudiantes La Oficina para el Bienestar del Estudiante patrocina

    E-print Network

    Leistikow, Bruce N.

    provocan tensin Muchos estudiantes estn acostumbrados a ser los mejores de su clase. La escuela de ajustarse a una calificacin "promedio" o ms baja. Muchos de los estudiantes son vistos por sus familias para los estudiantes como para los miembros de la familia. Bienestar estudiantil Un aspecto esencial en

  14. Semirido: un desafo para la CienciaSemirido: un desafo para la Ciencia del Suelodel Suelo

    E-print Network

    Nacional de San Luis, Universidad

    Semirido: un desafo para la CienciaSemirido: un desafo para la Ciencia del Suelodel Suelo 13 al(SL), Argentina DIFERENTES USOS DEL SUELO: CONSECUENCIAS SOBRE BALANCE HDRICO Y DRENAJE PROFUNDO EN ZONAS aguas y suelos. Se desarrollan procesos similares ante el reciente avance de la agricultura sobre los

  15. Para Amal y Henry. Estas notas constituyen el material de apoyo para el curso de Sistemas

    E-print Network

    Guerra Hernndez, Alejandro

    Para Amal y Henry. #12;#12;Prefacio Estas notas constituyen el material de apoyo para el curso de curso ha sido ofertado por la Facultad de Fisica e Inteli- gencia Artificial en cuatro ocasiones, dando lugar a cuatro tesis de maestria. Aunque es un curso general sobre los SMA, el contenido del mismo est

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

    E-print Network

    Fechas de los cursos para residentes OFERTAS DE CURSOS IDARM PARA RESIDENTES PROGRAMA INTERNACIONAL a travs de cursos permanentes realizados en el campus de la Escuela de Postgrado Naval de Monterey. Los de casos diseados para resaltar los objetivos especficos de aprendizaje. Los cursos para residentes

  17. Generalized deformed para-Bose oscillator and its coherent states

    SciTech Connect

    Bang, Ha Huy

    1996-04-01

    Generalized deformed commutation relations for a single-mode para-Bose oscillator are constructed. The connection of generalized deformed para-Bose oscillators with para-Bose oscillators is determined. From these, the energy spectrum of generalized deformed para-Bose oscillators and the coherent states of the annihilation operators are discussed.

  18. Nota a los padres de familia: Este libro para colorear fue diseado para ayudar a ensear a

    E-print Network

    Rau, Don C.

    #12;Nota a los padres de familia: Este libro para colorear fue diseado para ayudar a ensear a los. Al final de este libro para colorear, encontrarn una lista de alimentos ricos en calcio, que pueden Investigacin Dental y Craneofacial #12;y el Amiguito Cepillito UN LIBRO PARA COLOREAR Institutos Nacionales

  19. PUBLICATIONS 1 Articles `a para^itre

    E-print Network

    Marcotte, Patrice

    . F. Gilbert, M. Anjos, P. Marcotte and G. Savard "Optimal design of bilateral contracts for energy and G. Savard "Network pricing of congestion-free networks: the elastic and linear demand case" `a para. F. Gilbert, P. Marcotte and G. Savard "A numerical study of the logit network pricing problem" `a

  20. Sensitization to methylenedianiline and para-structures.

    PubMed

    Van Joost, T; Heule, F; de Boer, J

    1987-05-01

    A toxic-allergic skin reaction of the face, neck and arms due to accidental contact with methylenedianiline (syn: 4-4'-diaminodiphenylmethane) is reported in a cleaner at a chemical plant. Patch tests revealed sensitization to chemicals of the para-group. Earlier exposure to it was unlikely. Previous sensitization to related chemicals and possible cross-sensitization was considered to be the primary cause of the allergy and the clinical manifestations. PMID:3621924

  1. TELEMEDICINA: UN DESAFO PARA AMRICA LATINA

    PubMed Central

    Litewka, Sergio

    2011-01-01

    La telemedicina es una tendencia creciente en la prestacin de los servicios mdicos. Aunque la eficacia de esta prctica no ha estado bien establecida, es probable que los pases en desarrollo compartirn este nuevo paradigma con los desarrollados. Los defensores de la telemedicina en Amrica Latina sostienen que ser una herramienta til para reducir las disparidades y mejorar la accesibilidad de atencin de salud. Aunque Amrica Latina quiz se convierta en un lugar para la investigacin e investigacin de estos procedimientos, no est claro cmo la telemedicina podra contribuir a mejorar la accesibilidad para las poblaciones desfavorecidas, o coexistir con sistemas de atencin de salud pblicos crnicamente enfermos. Telemedicine is a growing trend in the provision of medical services. Although the effectiveness of this practice has not been well established, it is likely that developing countries will share this new paradigm with developed ones. Supporters of telemedicine in Latin America maintain that it will be a useful tool for reducing disparities and improving health care accessibility. Although Latin America might become a place for research and investigation of these procedures, it is not clear how telemedicine could contribute to improving accessibility for disadvantaged populations, or coexist with chronically ill-funded public healthcare systems. PMID:21625326

  2. Dotar de precisin a exmenes de deteccin para cncer

    Cancer.gov

    Una conferencia reciente patrocinada por el NCI reuni a investigadores importantes de exmenes de deteccin y de control de cncer para tratar la situacin de la ciencia de exmenes de deteccin de precisin para cinco cnceres.

  3. GUIA DE FORMULARIOS PARA LA ACREDITACIN DE CARRERAS

    E-print Network

    . Infraestructura, apoyo tcnico y recursos para la enseanza 10. Vinculacin con el medio. Los formularios de esta declarados y criterios previamente definidos. Para poder emitir juicios respecto de ambos aspectos, es

  4. Centro para la Salud Mundial (CGH) del NCI

    Cancer.gov

    El Centro para la Salud Mundial (CGH) del NCI coordina actividades de investigacin y trabaja con socios nacionales e internacionales para comprender y enfrentar la carga que representa el cncer a nivel mundial.

  5. Estadistica I Practica para los temas 4 y 5

    E-print Network

    Gil, Ana Arribas

    Estadistica I Practica para los temas 4 y 5: Variables aleatorias e Inferencia Estadistica #12;Practica para los temas 4 y 5: Variables aleatorias e Inferencia Estadistica Contenidos Variablesimite usando el paquete Teaching Demos. Inferencia Estadistica Intervalos de confianza para la media cuando

  6. Control del dolor: Apoyo para las personas con cncer

    Cancer.gov

    Contiene informacin sobre las medicinas contra el dolor para pacientes con cncer, los planes para controlarlo, cmo hablar con su equipo de atencin mdica sobre el dolor que usted siente y qu hacer para controlar los efectos fsicos y emocionales del

  7. Oficina para Prcticas Externas y Empleabilidad (OPE) CONVOCATORIA ORDINARIA DEL AO 2016 PARA PRCTICAS REMUNERADAS DE

    E-print Network

    Autonoma de Madrid, Universidad

    estudiantes la opcin de asistir a los cursos gratuitos que el Centro Regional de Informacin y Documentacin anlisis y sntesis B) FORMACIN A RECIBIR: - Curso interno "Atencin al pblico y al estudiante en particular. Tcnicas y habilidades para una correcta ejecucin". - Curso interno "Unidades y servicios de la

  8. Time domain para hydrogen induced polarization.

    PubMed

    Ratajczyk, Tomasz; Gutmann, Torsten; Dillenberger, Sonja; Abdulhussaein, Safaa; Frydel, Jaroslaw; Breitzke, Hergen; Bommerich, Ute; Trantzschel, Thomas; Bernarding, Johannes; Magusin, Pieter C M M; Buntkowsky, Gerd

    2012-01-01

    Para hydrogen induced polarization (PHIP) is a powerful hyperpolarization technique, which increases the NMR sensitivity by several orders of magnitude. However the hyperpolarized signal is created as an anti-phase signal, which necessitates high magnetic field homogeneity and spectral resolution in the conventional PHIP schemes. This hampers the application of PHIP enhancement in many fields, as for example in food science, materials science or MRI, where low B(0)-fields or low B(0)-homogeneity do decrease spectral resolution, leading to potential extinction if in-phase and anti-phase hyperpolarization signals cannot be resolved. Herein, we demonstrate that the echo sequence (45-?-180-?) enables the acquisition of low resolution PHIP enhanced liquid state NMR signals of phenylpropiolic acid derivatives and phenylacetylene at a low cost low-resolution 0.54 T spectrometer. As low field TD-spectrometers are commonly used in industry or biomedicine for the relaxometry of oil-water mixtures, food, nano-particles, or other systems, we compare two variants of para-hydrogen induced polarization with data-evaluation in the time domain (TD-PHIP). In both TD-ALTADENA and the TD-PASADENA strong spin echoes could be detected under conditions when usually no anti-phase signals can be measured due to the lack of resolution. The results suggest that the time-domain detection of PHIP-enhanced signals opens up new application areas for low-field PHIP-hyperpolarization, such as non-invasive compound detection or new contrast agents and biomarkers in low-field Magnetic Resonance Imaging (MRI). Finally, solid-state NMR calculations are presented, which show that the solid echo (90y-?-90x-?) version of the TD-ALTADENA experiment is able to convert up to 10% of the PHIP signal into visible magnetization. PMID:22365288

  9. Tumores de hipfisisVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del tumor de hipfisis, as como referencias a estudios clnicos, investigacin y otros temas relacionados.

  10. Tumores carcinoides gastrointestinalesVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del tumor carcinoide gastrointestinal, as como referencias a estudios clnicos y otros temas relacionados.

  11. INDICIOS DE CALIDAD DE SUS PUBLICACIONES PARA LA ANECAPUBLICACIONES PARA LA ANECA

    E-print Network

    Bilbao Arrese, Jess Mario

    de las revistas y de los libros para las reas de conocimiento de Ciencias de la Salud. OBJETIVOS DEL especialidad) Libros y captulos de libros 2.1.B. Se valora hasta un mx. de 7 puntos. 1.1.B. SALUD: Se valora hasta un mx. de 7 puntos. DebenLibros y captulos de libros 2.1.B. Se valora hasta un mx. de 7 puntos

  12. Jesus o Codigo para a Vida Eterna "Quando o HOMEM entender a mensagem de DEUS para sua

    E-print Network

    Torres, Fernando

    Jesus o Codigo para a Vida Eterna "Quando o HOMEM entender a mensagem de DEUS para sua vida, atravo para quem quiser" iv #12;A Deus Jo~ao 3:16 v #12;A minha esposa Juliana Bueno Castellanos Por seu Amor, paci^encia, apoio, companhia e por estar sonhado junto comigo os sonhos de Deus em nossas vidas. vi #12

  13. Algoritmo genetico para o problema de rotas de cobertura multiveiculo

    E-print Network

    Gomes, Francisco A. M.

    boa solu¸c~ao para a dif´icil tarefa de distribui¸c~ao adequada de viaturas. Tais rotas poderiam ser. Para que o tempo computacional na obten¸c~ao de uma boa solu¸c~ao seja satisfat´orio, vamos consi

  14. ARTIGO INTERNET Um milho de euros para estudar buracos negros

    E-print Network

    Instituto de Sistemas e Robotica

    NewsSearch ARTIGO INTERNET Um milho de euros para estudar buracos negros in http estudar buracos negros Vtor Cardoso , investigador do Departamento de Fsica do Instituto Superior milho de euros, para estudar a coliso de buracos negros - um processo fundamental em Relatividade Geral

  15. El trabajar para un empleador que ofrezca beneficios, de

    E-print Network

    El trabajar para un empleador que ofrezca beneficios, de pension y de salud, es una de las cosas con sus beneficios de pension y salud, si usted queda desempleado o va a trabajar para otra empresa beneficios, de pension y de salud, es una de las cosas ms inteligentes que un empleado puede hacer. Pero

  16. Cimpor inventa nova frmula para reduzir pegada de CO2

    E-print Network

    Instituto de Sistemas e Robotica

    Cimpor inventa nova frmula para reduzir pegada de CO2 CIMENTO. A Cimpor descobriu uma nova frmula para produzir ci- mento que lhe permitir reduzir a pegada de CO 2 em 25%. Segundo as contas da as fbricas do grupo, seriam emitidos menos quatro milhes de toneladas de CO 2 por ano, o que permitiria uma

  17. Sobre tecnicas de optimizacion para la multiplicacion de matrices

    E-print Network

    Gimnez, Domingo

    para estos sistemas. Son necesarias tecnicas de optimizacion del software para poder aproximarnosetodo simple basado en GFLOPs medios 1 // Change for library, GPU and CPU 2 gpu_flops = 460; cpu_flops = 140; 3

  18. Reconocimiento robusto de marcadores artificiales para la navegacion de robots

    E-print Network

    Escolano, Francisco

    on del medio permiten a~nadir al sistema un alto grado de flexibilidad, ayudando al robot a tomar pueden comparar distintos histogramas de este tipo para poder llevar a cabo un proceso de reconocimiento experimentos. 2 Histogramas polares Los histogramas polares son definidos como un medio para comparar s

  19. Salmonella y tomates: preguntas y respuestas para los consumidores1

    E-print Network

    Burns, Jacqueline K.

    SL263SP Salmonella y tomates: preguntas y respuestas para los consumidores1 Max Teplitski, Keith varios miles de clulas de Salmonella para que stas le causen salmonelosis. Sin embargo un brote de. Tendr salmonelosis? nicamente su doctor puede diagnosticar adecuadamente una infeccin por Salmonella

  20. Sistemas de Informao para a Web: Arquitecturas Aplicacionais

    E-print Network

    da Silva, Alberto Rodrigues

    1 Sistemas de Informao para a Web: Arquitecturas Aplicacionais Alberto Silva IST/INESC Rua Alves arquitecturas de sistemas de informao para a Web, designadamente baseadas em actividades computacionais (1. 1.1 Palavras-chave Web, Arquitecturas de Sistemas de Informao, SIW, CGI, SSI, Java, ORB. 2

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

    SciTech Connect

    Vaisman, Izu

    2013-12-15

    In a previous paper, we have shown that the geometry of double field theory has a natural interpretation on flat para-Khler 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-Khler 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.

  2. a New Equation of State for Solid para-HYDROGEN

    NASA Astrophysics Data System (ADS)

    Wang, Lecheng; Le Roy, Robert J.; Roy, Pierre-Nicholas

    2015-06-01

    Solid para-H_2 is a popular accommodating host for impurity spectroscopy due to its unique softness and the spherical symmetry of para-H_2 in its J}=0 rotational level. To simulate the properties of impurity-doped solid para-H_2, a reliable model for the `soft' pure solid para-H_2 at different pressures is highly desirable. While a couple of experimental and theoretical studies aimed at elucidating the equation of state (EOS) of solid para-H_2 have been reported, the calculated EOS was shown to be heavily dependent on the potential energy surface (PES) between two para-H_2 that was used in the simulations. The current study also demonstrates that different choices of the parameters governing the Quantum Monte Carlo simulation could produce different EOS curves. To obtain a reliable model for pure solid para-H_2, we used a new 1-D para-H_2 PES reported by Faruk et al. that was obtained by averaging over Hinde's highly accurate 6-D H_2--H_2 PES. The EOS of pure solid para-H_2 was calculated using the PIMC algorithm with periodic boundary conditions (PBC). To precisely determine the equilibrium density of solid para-H_2, both the value of the PIMC time step (?) and the number of particles in the PBC cell were extrapolated to convergence. The resulting EOS agreed well with experimental observations, and the hcp structured solid para-H_2 was found to be more stable than the fcc one at 4.2K, in agreement with experiment. The vibrational frequency shift of para-H_2 as a function of the density of the pure solid was also calculated, and the value of the shift at the equilibrium density is found to agree well with experiment. T. Momose, H. Honshina, M. Fushitani and H. Katsuki, Vib. Spectrosc. 34, 95(2004). M. E. Fajardo, J. Phys. Chem. A 117, 13504 (2013). I. F. Silvera, Rev. Mod. Phys. 52, 393(1980). F. Operetto and F. Pederiva, Phys. Rev. B 73, 184124(2006). T. Omiyinka and M. Boninsegni, Phys. Rev. B 88, 024112(2013). N. Faruk, M. Schmidt, H. Li, R. J. Le Roy, and P.-N. Roy, J. Chem. Phys. 141, 014310(2014). R. J. Hinde, J. Chem. Phys. 128, 154308(2008).

  3. Resultados de estudio para cncer de pulmn indica

    Cancer.gov

    El Instituto Nacional del Cncer (NCI) da a conocer hoy resultados iniciales de un estudio de gran envergadura sobre mtodos de deteccin para reducir el nmero de muertes por cncer de pulmn al detectar cnceres en estadios relativamente iniciales.

  4. ParaDiS-FEM dislocation dynamics simulation code primer

    SciTech Connect

    Tang, M; Hommes, G; Aubry, S; Arsenlis, A

    2011-09-27

    The ParaDiS code is developed to study bulk systems with periodic boundary conditions. When we try to perform discrete dislocation dynamics simulations for finite systems such as thin films or cylinders, the ParaDiS code must be extended. First, dislocations need to be contained inside the finite simulation box; Second, dislocations inside the finite box experience image stresses due to the free surfaces. We have developed in-house FEM subroutines to couple with the ParaDiS code to deal with free surface related issues in the dislocation dynamics simulations. This primer explains how the coupled code was developed, the main changes from the ParaDiS code, and the functions of the new FEM subroutines.

  5. Fatiga (PDQ)Versin para profesionales de salud

    Cancer.gov

    Resumen de informacin revisada por expertos acerca de la fatiga, una afeccin caracterizada por extremo cansancio e incapacidad para funcionar por la falta de energa, que a menudo se observa como una complicacin del cncer y su tratamiento.

  6. Cncer de vescula biliarVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de vescula biliar, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  7. Cncer de pulmnVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, las causas y los exmenes de deteccin del cncer de pulmn, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas

  8. Cncer de rinVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de rin, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas relacionados con este tipo de cncer.

  9. Cncer de vulvaVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de vulva, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  10. Cncer de testculoVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, las causas y los exmenes de deteccin del cncer de testculo, as como referencias a estudios clnicos, investigacin y otros temas.

  11. Cncer de intestino delgadoVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de intestino delgado, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  12. Cncer de pncreasVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de pncreas, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  13. Cncer de pielVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, las causas y los exmenes de deteccin del cncer de piel, as como referencias a estudios clnicos, investigacin y otros temas.

  14. Cncer de anoVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de ano, as como referencias a estudios clnicos y otros temas relacionados con este tipo de cncer.

  15. Cncer de peneVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de pene, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  16. Cncer de huesoVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de hueso (seo), as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  17. Cncer de tiroidesVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de tiroides, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  18. Cncer de cuello uterinoVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, las causas y los exmenes de deteccin del cncer de cuello uterino, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas relacionados.

  19. Cncer de paratiroidesVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de paratiroides, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  20. Inmunoterapia: Uso del sistema inmunitario para tratar el cncer

    Cancer.gov

    Resumen de los mtodos de inmunoterapia utilizados para tratar el cncer, tales como el uso de anticuerpos monoclonales, transferencia celular adoptiva, vacunas de tratamiento contra el cncer y sustancias modificadoras de la respuesta inmunitaria.

  1. Control del dolor: Apoyo para las personas con cncer

    Cancer.gov

    Libro sobre el control del dolor en pacientes con cncer. Cubre los mtodos y medicinas, as como los efectos fsicos y emocionales del dolor. Es una adaptacin cultural para el pblico de habla hispana del libro en ingls Pain Control.

  2. Consejos para cuando le duelan la boca o la garganta

    Cancer.gov

    Informacin para personas que estn recibiendo radioterapia y consejos sobre cmo controlar las molestias en la boca y garganta, sentirse mejor durante el tratamiento y comunicarse con su doctor o enfermera.

  3. Cncer de estmagopara profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, las causas y los exmenes de deteccin del cncer de estmago (gstrico), as como referencias a estudios clnicos, investigacin, estadsticas y otros temas relacionados.

  4. Cncer de cabeza y cuellopara profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, las causas y los exmenes de deteccin de los cnceres de cabeza y cuello, as como referencias a estudios clnicos, investigaciones, estadsticas y temas relacionados.

  5. Cannabis y canabinoides (PDQ)Versin para pacientes

    Cancer.gov

    Resumen de informacin revisada por expertos sobre el uso del Cannabis y canabinoides para el tratamiento de los efectos secundarios relacionados con el tratamiento del cncer como la nusea y el vmito.

  6. Cannabis y canabinoides (PDQ)Versin para profesionales de salud

    Cancer.gov

    Resumen de informacin revisada por expertos de informacin sobre el uso del Cannabis y canabinoides para el tratamiento de los efectos secundarios relacionados con el tratamiento del cncer como la nusea y el vmito.

  7. Preguntas para hacerle al doctor acerca del cncer

    Cancer.gov

    Serie de preguntas, organizadas por tema, que los pacientes con cncer pueden hacer al mdico o a otros miembros de su equipo de atencin mdica para conocer ms acerca de su tipo de cncer y lo que pueden esperar.

  8. Terapia hormonal para la menopausia y el cncer

    Cancer.gov

    Hoja informativa acerca de los resultados de los estudios sobre el uso de la terapia hormonal para la menopausia. Incluye informacin sobre el efecto de esta terapia en el cuerpo y explica los riesgos y beneficios del uso de hormonas.

  9. Autogua para el telescopio 2,15 mts de CASLEO

    NASA Astrophysics Data System (ADS)

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

    Se est desarrollando un sistema de autogua para el telescopio de 2,15 mts. El mismo se realizar aprovechando el Offset Guider. Al ocular mvil de ste se vincular alguna cmara digital (ST4-ST7-CH250) para lograr la visin del objeto. El funcionamiento del equipo ser el siguiente: primero, dadas las coordenadas del objeto a observar, se tomarn las coordenadas del telescopio para que, a travs de una base de datos, se determine un campo de objetos que sirvan para la cmara de visin, luego, la PC obtendr el offset entre la estrella de observacin y la estrella seleccionada como gua, este valor ser trasladado a los motores que posicionarn en forma automtica el ocular. Una vez que la estrella es visualizada en la cmara (monitor de PC ) se correr el programa que guiar el telescopio automticamente.

  10. Tumores cerebralesVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento de los tumores cerebrales, as como referencias a estudios clnicos, estadsticas y otros temas relacionados con estos tipos de cncer.

  11. Cncer de prstatapara profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, las causas y los exmenes de deteccin del cncer de prstata, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas relacionados.

  12. Estudios ALCHEMIST para el cncer de pulmn en estadio inicial

    Cancer.gov

    ALCHEMIST comprende tres estudios clnicos integrados de medicina de precisin diseados para identificar a personas con cncer de pulmn en estadio inicial cuyos tumores tienen ciertos cambios genticos poco comunes.

  13. Cul es la apariencia de un ambiente seguro para dormir?

    E-print Network

    Rau, Don C.

    silla. *Para obtener ms informacin sobre las normas de seguridad de las cunas, llame gratis a la sueo. Su beb no debe dormir solo ni acompaado en una cama de adultos, un sof o una silla. Mantenga

  14. Cncer colorrectalVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, las causas y los exmenes de deteccin del cncer de colon y recto, as como referencias a estudios clnicos, estadsticas y otros temas.

  15. Mesotelioma malignoVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento y las causas del mesotelioma maligno, as como referencias a estudios clnicos y otros temas relacionados con este tipo de cncer.

  16. Terapias adyuvantes y neoadyuvantes para el cncer de seno

    Cancer.gov

    Hoja informativa que explica las terapias adyuvantes (tratamiento que se administra adems de la terapia primaria para aumentar la posibilidad de supervivencia a largo plazo) y las neoadyuvantes (terapia que se administra antes de la terapia principal).

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

    NASA Video Gallery

    El astronauta de la NASA Jos Hernndez alienta a los estudiantes a que sigan sus sueos. Hernndez tambin habla acerca del papel que juegan los padres para ayudar a que sus hijos hagan realidad s...

  18. Delirio (PDQ)Versin para profesionales de salud

    Cancer.gov

    Resumen de informacin revisada por expertos acerca del delirio como una complicacin a causa del cncer o su tratamiento. Se discuten los enfoques de los cuidados mdicos de apoyo, asi como farmacolgicos para el manejo del delirio.

  19. Sarcoma de tejido blandoVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del sarcoma de tejido blando, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas relacionados con este tipo de cncer.

  20. Cncer de seno (mama)para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, la gentica, las causas y los exmenes de deteccin del cncer de seno (mama), as como referencias a estudios clnicos, investigacin, estadsticas y temas relacionados.

  1. Protocolo Tolerante a Faltas Bizantinas para Bases de Dados Transacionais

    E-print Network

    Correia, Miguel

    ~oes e um problema bastante discutido na literatura, onde ele e referenciado como confirmac~ao at~ao de novos protocolos para sistemas confiaveis. Na literatura, e encontrado um vasto conjunto de

  2. Cncer de vaginaVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de vagina, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  3. Cncer de vejigaVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, las causas y los exmenes de deteccin del cncer de vejiga, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas.

  4. Cncer de uretraVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del cncer de uretra, as como referencias a estudios clnicos y otros temas relacionados con este tipo de cncer.

  5. Cncer de teroVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, las causas y los exmenes de deteccin del cncer uterino, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas.

  6. 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...

  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. Ortho- and para-hydrogen in neutron thermalization

    SciTech Connect

    Daemen, L. L.; Brun, T. O.

    1998-01-01

    The large difference in neutron scattering cross-section at low neutron energies between ortho- and para-hydrogen was recognized early on. In view of this difference (more than an order of magnitude), one might legitimately ask whether the ortho/para ratio has a significant effect on the neutron thermalization properties of a cold hydrogen moderator. Several experiments performed in the 60`s and early 70`s with a variety of source and (liquid hydrogen) moderator configurations attempted to investigate this. The results tend to show that the ortho/para ratio does indeed have an effect on the energy spectrum of the neutron beam produced. Unfortunately, the results are not always consistent with each other and much unknown territory remains to be explored. The problem has been approached from a computational standpoint, but these isolated efforts are far from having examined the ortho/para-hydrogen problem in neutron moderation in all its complexity. Because of space limitations, the authors cannot cover, even briefly, all the aspects of the ortho/para question here. This paper will summarize experiments meant to investigate the effect of the ortho/para ratio on the neutron energy spectrum produced by liquid hydrogen moderators.

  9. Sistemas Correctores de Campo Para EL Telescopio Cassegrain IAC80

    NASA Astrophysics Data System (ADS)

    Galan, M. J.; Cobos, F. J.

    1987-05-01

    El proyecto de instrumentacin de mayor importancia que ha tenido el Instituto de Astrofisica de Canarias en los ltimos afios ha sido el diseflo y construccin del te1escopio IAC8O. Este requera del esfuerzo con junto en mecnica, ptica y electrnica, lo que facilit la estructuracin y el crecimiento de los respectivos grupos de trabajo, que posteriormente se integraron en departamentos En su origen (1977), el telescopio IAC80 fue concebido como un sistema clsico tipo Cassegrain, con una razn focal F/i 1.3 para el sistema Casse grain y una razn focal F/20 para el sistema Coud. Posteriormente, aunque se mantuvo la filosofia de que el sistema bsico fuera el F/11.3, se consider conveniente el diseo de secundarios para razones focales F/16 y F/32, y se elimin el de F/20. Sin embargo, dada la importancia relativa que un foco estrictamente fotogrfico tiene en un telescopio moderno, diseado bsicamente para fotometra fotoelctrica y con un campo util mnimamente de 40 minutos de arco, se decdi Ilevar a cabo el diseo de un secundario F/8 con un sistema corrector de campo, pero que estuviera formado nicamente por lentes con superficies esfricas para que asl su construccin fuera posible en Espaa en Mxico. La creciente utilizacin de detectores bidimensionales para fines de investigacin astron6mica y la viabilidad de que en un futuro cercano stos tengan un rea sensible cada vez mayor, hicieron atractiva la idea de tener diseado un sistema corrector de campo para el foco primario (F/3), con un campo til mnimo de un grado, y tambin con la limitante de que sus componentes tuvieron slamente suprficies esfricas. Ambos diseos de los sis-temas correctores de campo se llevaron a cabo, en gran medida, como parte de un proyecto de colaboracin e intercambio en el rea de diseo y evaluacin de sistemas pticos.

  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 neuromodulacin para el tratamiento del temblor

    PubMed Central

    Bendersky, Damin; Ajler, Pablo; Yampolsky, Claudio

    2014-01-01

    Introduccin: El temblor puede ser un desorden incapacitante y el tratamiento de primera lnea para estos pacientes es farmacolgico. Sin embargo, este tratamiento puede llevar a una reduccin satisfactoria del temblor en slo el 50% de los pacientes con temblor esencial. La talamotoma era el tratamiento de eleccin para el temblor refractario al tratamiento mdico hasta que comenz a utilizarse la estimulacin cerebral profunda (ECP) del ncleo ventral intermedio (Vim) del tlamo. En la actualidad, raramente se realiza la talamotoma. Mtodos: Este artculo es una revisin no sistemtica de las indicaciones, resultados, parmetros de programacin y tcnica quirrgica de la ECP del Vim para el tratamiento del temblor. Resultados: Aunque los resultados clnicos son similares usando la talamotoma o la ECP del Vim, la primera causa ms efectos adversos que la ltima. Adems, la ECP puede ser usada bilateralmente, mientras que la talamotoma tiene un alto riesgo de causar disartria cuando se realiza de ambos lados. La ECP del Vim logr una adecuada mejora del temblor en varias series de pacientes con temblor causado por temblor esencial, enfermedad de Parkinson o esclerosis mltiple. Adems del Vim, hay otros blancos que estn siendo usados por varios autores, tales como la zona incerta y las radiaciones prelemniscales. Conclusin: La ECP del Vim es un tratamiento til para el temblor incapacitante refractario al tratamiento mdico. Es esencial realizar una precisa seleccin de pacientes, as como utilizar una tcnica quirrgica correcta. An se desconoce el mejor blanco estereotctico para el temblor, aunque el Vim es el ms usado. PMID:25165613

  12. El diseo final del espectrgrafo de banco (EBASIM) para CASLEO

    NASA Astrophysics Data System (ADS)

    Simmons, J.; Levato, H.

    Utilizando el cdigo de ptica ACCOS V se ha finalizado el diseo del espectrgrafo de banco para CASLEO. En una comunicacin anterior habamos indicado que utilizaramos un colimador de 150 mm de dimetro con un radio de curvatura de 1540 mm. Para el espejo cmara, que tiene un dimetro de 200 mm, el radio de curvatura es de 1200 mm, ambos radios con una tolerancia no mayor a los 3 mm. En la presente, se informa sobre los detalles finales del clculo del espectrgrafo que incluye el cmputo para 5 longitudes de onda diferentes y alrededor de 100 rayos. En todos los casos el 75 % de energa est dentro de un dimetro de 13 micrones. El diseo ha sido probado entre 3500 hasta 9000 con resultados satisfactorios.

  13. Astronomia para/com crianas carentes em Limeira

    NASA Astrophysics Data System (ADS)

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

    2003-08-01

    Em 2001, o Instituto Superior de Cincias Aplicadas (ISCA Faculdades de Limeira) iniciou um projeto pelo qual o Observatrio do Morro Azul empreendeu uma parceria com o Centro de Promoo Social Municipal (CEPROSOM), instituio mantida pela Prefeitura Municipal de Limeira para atender crianas e adolescentes carentes. O CEPROSOM contava com dois projetos: Projeto Centro de Convivncia Infantil (CCI) e Programa Criana e Adolescente (PCA), que atendiam crianas e adolescentes em Centros Comunitrios de diversas reas da cidade. Esses projetos tm como prioridades estabelecer atividades prazerosas para as crianas no sentido de retir-las das ruas. Assim sendo, as crianas passaram a ter mais um tipo de atividade - as visitas ao observatrio. Este painel descreve as vrias fases do projeto, que envolveu: reunies de planejamento, curso de Astronomia para as orientadoras dos CCIs e PCAs, atividades relacionadas a visitas das crianas ao Observatrio, proposta de construo de gnmons e relgios de Sol nos diversos Centros Comunitrios de Limeira e divulgao do projeto na imprensa. O painel inclui discusses sobre a aprendizagem de crianas carentes, relatos que mostram a postura das orientadoras sobre a pertinncia do ensino de Astronomia, relatos do monitor que fez o atendimento no Observatrio e o que o nmero de crianas atendidas representou para as atividades da instituio desde o incio de suas atividades e, em particular, em 2001. Os resultados so baseados na anlise de relatos das orientadoras e do monitor do Observatrio, registros de visitas e matrias da imprensa local. Conclui com uma avaliao do que tal projeto representou para as Instituies participantes. Para o Observatrio, em particular, foi feita uma anlise com relao s outras modalidades de atendimentos que envolvem alunos de escolas e pblico em geral. Tambm abordada a questo do compromisso social do Observatrio na educao do pblico em questo.

  14. Qu es el AAP? El Programa de Asistencia para

    E-print Network

    Kim, Duck O.

    asesora breve y un servicio de referidos a otros servicios que est disponible para todas las familias maravillosa manera de construir una familia, sabemos que las familias pueden enfrentar desafos. Nosotros web en: http://aap.uchc.edu Este programa est financiado por el Departamento de Nios y Familias del

  15. DERECHOS DEL EMPLEADO LEy PARA LA PROtECCin

    E-print Network

    Rock, Chris

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

  16. CONCURSO PBLICO PARA PROFESSOR ADJUNTO SETOR: INTELIGENCIA ARTIFICIAL

    E-print Network

    Liu, I-Shih

    CONCURSO PBLICO PARA PROFESSOR ADJUNTO SETOR: INTELIGENCIA ARTIFICIAL (Edital No. 27, DOU de 25 de Course in Fuzzy Logic, Chapman & Hall/CRC, 2000 4. Stuart Russell, Peter Norvig, Artificial Intelligence: A Modern Approach - Third Edition, Prentice Hall - 2010 5. Nils J Nilsson, Artificial Intelligence: A new

  17. 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...

  18. Lymphomatoid contact dermatitis to para-tertyl-butyl phenol resin.

    PubMed

    Evans, A V; Banerjee, P; McFadden, J P; Calonje, E

    2003-05-01

    Lymphomatoid contact dermatitis refers to the relatively little known phenomenon of allergic contact dermatitis producing histological features suggestive of cutaneous T-cell lymphoma. We report the first case of lymphomatoid contact dermatitis in response to para-tertyl-butyl phenol resin. PMID:12780711

  19. Un Programa de Limpieza Verde para Instalaciones en Connecticut Legislacin

    E-print Network

    Oliver, Douglas L.

    5. Salud y seguridad para los trabajadores 1. Productos de Limpieza Ambientalmente Preferibles productos usando normas cientficas sobre impactos a la salud y el medio ambiente. Estos identifican verdes por la salud de los trabajadores y ambiente ms seguro t #12;Las dos agencias certificadoras

  20. 5to CONGRESO FORESTAL DE CUBA "BOSQUES PARA LAS PERSONAS"

    E-print Network

    Schierup, Mikkel Heide

    5to CONGRESO FORESTAL DE CUBA "BOSQUES PARA LAS PERSONAS" V Encuentro Internacional de Jvenes 2011 Palacio de Convenciones de La Habana, Cuba #12; 1 "La cuestin vital de la que hablamos es. Resultados del Proyecto Cuba-Canad............................................... 17 COMISIN 2. Uso y

  1. Analyzing and Visualizing Cosmological Simulations with ParaView

    SciTech Connect

    Woodring, Jonathan; Heitmann, Katrin; Ahrens, James P; Fasel, Patricia; Hsu, Chung-Hsing; Habib, Salman; Pope, Adrian

    2011-01-01

    The advent of large cosmological sky surveys - ushering in the era of precision cosmology - has been accompanied by ever larger cosmological simulations. The analysis of these simulations, which currently encompass tens of billions of particles and up to a trillion particles in the near future, is often as daunting as carrying out the simulations in the first place. Therefore, the development of very efficient analysis tools combining qualitative and quantitative capabilities is a matter of some urgency. In this paper, we introduce new analysis features implemented within ParaView, a fully parallel, open-source visualization toolkit, to analyze large N-body simulations. A major aspect of ParaView is that it can live and operate on the same machines and utilize the same parallel power as the simulation codes themselves. In addition, data movement is in a serious bottleneck now and will become even more of an issue in the future; an interactive visualization and analysis tool that can handle data in situ is fast becoming essential. The new features in ParaView include particle readers and a very efficient halo finder that identifies friends-of-friends halos and determines common halo properties, including spherical overdensity properties. In combination with many other functionalities already existing within ParaView, such as histogram routines or interfaces to programming languages like Python, this enhanced version enables fast, interactive, and convenient analyses of large cosmological simulations. In addition, development paths are available for future extensions.

  2. MODELOS, MEDICIONES Y TARIFICACION PARA REDES CON CALIDAD DE SERVICIO

    E-print Network

    MODELOS, MEDICIONES Y TARIFICACION PARA REDES CON CALIDAD DE SERVICIO Autor: Pablo Belzarena el Departamento de Telecomunicaciones postergando sus actividades personales. A todos con los que he redes con calidad de servicio . . . . . . . . . . . . . . . . . . . 6 1.2. Las contribuciones de la

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

    E-print Network

    Boemo, Eduardo

    Montero E. Boemo Escuela Politcnica Superior Universidad Autnoma de Madrid Ctra. de Colmenar Km.15. 28049 Madrid, Espaa. http://www.ii.uam.es/~ivan email: eduardo.boemo@uam.es Telfono: +34 91 497 6213 sencillos para hacer en casa Muy baja intensidad Instrucciones basadas en Lectura Fcil Desarrollada

  4. CLASSIFICAO DE Churn PARA EMPRESAS DO RAMO DE TELECOMUNICAES

    E-print Network

    Paran, Universidade Federal do

    etapas do processo de manuteno de carteiras de clientes ser realizada. A etapa do processo escolhida foi a etapa na qual o cliente opta por cancelar seus produtos com a empresa, etapa denominada de Churn ou Attrition. A maioria dos clientes, geralmente, no pensa muito antes de migrar para companhias que

  5. Design de Tecnologias Adaptveis para Uso de Profissionais da rea

    E-print Network

    Barbosa, Alberto

    meios de personalização para atender às necessidades de cada indivíduo. Dessa forma, profissionais que TEA, assim como diversos tipos de respostas aos modos e meios de intervenção utilizados [13]. Diante

  6. "DECISION CAN": UMA BIBLIOTECA DE CASOS PARA TOMADA DE DECISO

    E-print Network

    Antunes, Pedro

    ao mesmo nível, considerando que ambos fornecem meios e orientações para: · a tarefa, centrada nos fornecer meios e orientações aos grupos, tal não se tem verificado na realidade. De acordo com o compêndio

  7. Acerca del Centro para la Salud Mundial del NCI

    Cancer.gov

    El Centro para la Salud Mundial (CGH) coordina y fija las prioridades en las actividades que lleva a cabo el Instituto Nacional del Cncer a nivel mundial. Su objetivo es avanzar la investigacin mundial del cncer y reducir las muertes causadas por esta enfermedad.

  8. Un Sistema Inmune Artificial para Solucionar Problemas de Optimizacion Multiobjetivo

    E-print Network

    Coello, Carlos A. Coello

    concepto importante es el de optimalidad de Pareto [2], el cual fue propuesto por Vilfredo Pareto [1] en el sigue: Decimos que un punto XW`Y (Y es la zona factible) es un optimo de Pareto si para toda a

  9. Una Arquitectura para una Herramienta de Patrones de Diseo

    E-print Network

    Molina, Jess Garca

    Una Arquitectura para una Herramienta de Patrones de Diseo Jos Sez Martnez1 , Jess Garca herramientas es necesario disponer de una arquitectura flexible que permita manipularlos eficientemente. Este trabajo presenta una arquitectura, basada a su vez en patrones, diseada con este fin y describe una

  10. Melhoramentos no cdigo Wilson-Devinney para binrias eclipsantes

    NASA Astrophysics Data System (ADS)

    Vieira, L. A.; Vaz, L. P. R.

    2003-08-01

    A anlise de curvas de luz e velocidades radiais de sistemas binrios eclipsantes pode ser feita por meio de vrios modelos. Um desses o Modelo Wilson-Devinney (WD). Ao longo dos anos, esse modelo sofreu vrias alteraes em seus cdigos principais, com a finalidade de torn-lo mais consistente tanto fisica como numericamente. O Modelo WD tem sido melhorado de vrias maneiras em seus dois cdigos: um para a predio das curvas de luz terica e de velocidade radiais e outra para as solues destas curvas. Teoricamente, na fsica do modelo, ns introduzimos a possibilidade de levar em conta os efeitos do movimento apsidal. Numericamente, ns introduzimos a possibilidade de usar o Mtodo SIMPLEX no procedimento da soluo, como uma alternativa para o j implementado Mtodo de Mnimos Quadrados (Least Squares Method). Estas modificaes, juntamente com outras j introduzidas pelo nosso grupo anteriormente, tornam o cdigo mais eficiente na soluo das curvas de luz e de velocidade radiais de binrias eclipsantes. Como o modelo tem sido usado para analisar sistemas com componentes pr-sequncia principal (TY CrA, Casey et al. 1998, Vaz et al. 1998), SM 790, Stassun et al. 2003), este melhoramento beneficiar estes casos tambm. Apresentamos os resultados obtidos com a modificao do cdigo WD por meio do uso de dados da estrela GL Carinae, comprovando, (1) que os parmetros orbitais calculados por ns so coerentes com os obtidos anteriormente na literatura (Gimnez & Clausen, 1986) e com os obtidos por Faria (1987), e (2) que a implementao do Mtodo SIMPLEX torna o cdigo mais lento mas completamente consistente internamente e evita os problemas gerados pelo uso do Mtodo de Mnimos Quadrados, tais como impreciso no clculo das derivadas parciais e convergncia para mnimos locais.

  11. 296 PARA SABER, EXPERIMENTARY SIMULAR 4& Aqut comienza una serie que deprincipio busca ser una oportunidad, para saber,

    E-print Network

    Talanquer, Vicente A.

    296 PARA SABER, EXPERIMENTARY SIMULAR 4& Aqut comienza una serie que deprincipio busca ser una- tamiento de las propiedades de respuesta del sistema ante variacionesde los parmetros externos, puede ser transicin de fase puede ser concebida como una catstrofe en la que todos los participantes se han puesto de

  12. Normas para solicitaes de alunos CAP Esta norma versa sobre os documentos que se fazem necessrios para a

    E-print Network

    documentos que se fazem necessrios para a solicitao das demandas de alunos junto que se entra com o pedido; e. Horrio previsto da defesa; f. Membros docentes; #12;12. Cpia da tese de doutorado a ser defendida ou declarao do aluno se

  13. Analyzing and Visualizing Cosmological Simulations with ParaView

    E-print Network

    Woodring, Jonathan; Ahrens, James; Fasel, Patricia; Hsu, Chung-Hsing; Habib, Salman; Pope, Adrian

    2010-01-01

    The advent of large cosmological sky surveys - ushering in the era of precision cosmology - has been accompanied by ever larger cosmological simulations. The analysis of these simulations, which currently encompass tens of billions of particles and up to trillion particles in the near future, is often as daunting as carrying out the simulations in the first place. Therefore, the development of very efficient analysis tools combining qualitative and quantitative capabilities is a matter of some urgency. In this paper we introduce new analysis features implemented within ParaView, a parallel, open-source visualization toolkit, to analyze large N-body simulations. The new features include particle readers and a very efficient halo finder which identifies friends-of-friends halos and determines common halo properties. In combination with many other functionalities already existing within ParaView, such as histogram routines or interfaces to Python, this enhanced version enables fast, interactive, and convenient a...

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

    E-print Network

    Mansour, Toufik; 10.3842/SIGMA.2009.073

    2009-01-01

    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.

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

    E-print Network

    Toufik Mansour; Matthias Schork

    2009-07-15

    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.

  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. Base de linhas moleculares para sntese espectral estelar

    NASA Astrophysics Data System (ADS)

    Milone, A.; Sanzovo, G.

    2003-08-01

    A anlise das abundncias qu micas fotosfricas em estrelas do tipo solar ou tardia, atravs do clculo terico de seus espectros, emprega a espectroscopia de alta resoluo e necessita de uma base representativa de linhas atmicas e moleculares com suas respectivas constantes bem determinadas. Nesse trabalho, utilizamos como ponto de partida as extensas listas de linhas espectrais de sistemas eletrnicos de algumas molculas diatmicas compiladas por Kurucz para a construo de uma base de linhas moleculares para a s ntese espectral estelar. Revisamos as determinaes dos fatores rotacionais de Honl-London das foras de oscilador das linhas moleculares, para cada banda vibracional de alguns sistemas eletrnicos, seguindo a regra usual de normalizao. Usamos as foras de oscilador eletrnicas da literatura. Os fatores vibracionais de Franck-Condon de cada banda foram especialmente recalculados empregando-se novas constantes moleculares. Reproduzimos, com xito, as absores espectrais de determinadas bandas eletrnicas-vibracionais das espcies moleculares C12C12, C12N14 e Mg24H em espectros de estrelas de referncia como o Sol e Arcturus.

  18. Para rubber seed oil: new promising unconventional oil for cosmetics.

    PubMed

    Lourith, Nattaya; Kanlayavattanakul, Mayuree; Sucontphunt, Apirada; Ondee, Thunnicha

    2014-01-01

    Para rubber seed was macerated in petroleum ether and n-hexane, individually, for 30 min. The extraction was additionally performed by reflux and soxhlet for 6 h with the same solvent and proportion. Soxhlet extraction by petroleum ether afforded the greatest extractive yield (22.90 0.92%). Although antioxidant activity by means of 1, 1-diphenyl-2-picrylhydrazyl (DPPH) assay was insignificantly differed in soxhleted (8.90 1.15%) and refluxed (9.02 0.71%) by n-hexane, soxhlet extraction by n-hexane was significantly (p < 0.05) potent scavenged 2,2'-azino-bis(3-ethylbenzothaiazoline)-6-sulfonic acid) or ABTS radical with trolox equivalent antioxidant capacity (TEAC) of 66.54 6.88 mg/100 g oil. This extract was non cytotoxic towards normal human fibroblast cells. In addition, oleic acid and palmitic acid were determined at a greater content than in the seed of para rubber cultivated in Malaysia, although linoleic and stearic acid contents were not differed. This bright yellow extract was further evaluated on other physicochemical characters. The determined specific gravity, refractive index, iodine value, peroxide value and saponification value were in the range of commercialized vegetable oils used as cosmetic raw material. Therefore, Para rubber seed oil is highlighted as the promising ecological ingredient appraisal for cosmetics. Transforming of the seed that is by-product of the important industrial crop of Thailand into cosmetics is encouraged accordingly. PMID:24976614

  19. Un vistazo al auge de la ciruga robtica para el cncer de prstata

    Cancer.gov

    El uso de la ciruga robtica para el cncer de prstata ha aumentado en forma acelerada. Lo que esta tendencia significa para los pacientes y el sistema de salud todava sigue siendo objeto de estudio y debate.

  20. EXPERIENCIA DE ELABORACIN DE MATERIAL DOCENTE PARA EL APRENDIZAJE INDEPENDIENTE DE

    E-print Network

    Morancho, Enric

    interactivas con varias herramientas y vdeos con transparencias de clases) para poder valorar, recomendar y un creciente nmero de asignaturas se utilizan medios audiovisuales para el soporte de la imparticin

  1. (Continuacin de las Responsabilidades) con una lista general de responsabilidades, vlidas para

    E-print Network

    Nacionales de la Salud Para ms informaciones, visite el website del IRB del Centro Mdico en: http como objetivo evaluar riesgos para la salud y probar nuevas estrategias de diagnstico, tratamiento y salud. El conocimiento obtenido a travs de este tipo de trabajos puede ser de gran valor para nuestra

  2. Accesibilidad para personas con debilidad visual Mac OS X Snow Leopard

    E-print Network

    Villanueva, Alicia

    Accesibilidad para personas con debilidad visual Mac OS X Snow Leopard ASIC 18 de noviembre de 2010 Pg. 1 de 25 GUA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD VISUAL EN ENTORNO MAC OS X SNOW LEOPARD Al igual que otros sistemas operativos, MAC OS X Snow Leopard ofrece algunas ayudas para que las

  3. iga os trs mandamentos lista-dos a seguir para se casar com

    E-print Network

    de Aguiar, Marcus A. M.

    iga os trs mandamentos lista- dos a seguir para se casar com o homem ou a mulher dos seus sonhos: 1) transforme-se no melhor que puder!; 2) deixe-o assumir o comando, se for mulher; se for homem receitas para encon- trar um parceiro, depara-se, antes de mais nada, com a orientao para que realmente

  4. 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...

  5. Propuesta de autorizacin para entornos Grid basada en la arquitectura NAS-SAML

    E-print Network

    Snchez Cuenca, Manuel

    Propuesta de autorizacin para entornos Grid basada en la arquitectura NAS-SAML Manuel Snchez1 que acceden a sus recursos. Se han propuesto varias arquitecturas de autorizacin para este tipo de como un recurso ms. La arquitectura AAA fue diseada para resolver este problema usando diferentes

  6. GUA DE USO NO SEXISTA DEL VOCABULARIO ESPAOL Unidad para la Igualdad entre Mujeres y Hombres

    E-print Network

    Acacio, Manuel

    GUA DE USO NO SEXISTA DEL VOCABULARIO ESPAOL Unidad para la Igualdad entre Mujeres y Hombres Gua VOCABULARIO ESPAOL Unidad para la Igualdad entre Mujeres y Hombres NDICE I. INTRODUCCIN II. RECOMENDACIONES Unidad para la Igualdad entre Mujeres y Hombres III... IIINNNTTTRRROOODDDUUUCCCCCCIIINNN Lo que no se

  7. Cmo cuidarse mientras usted cuida a su ser querido: Apoyo para personas que cuidan a un ser querido con cncer

    Cancer.gov

    Un folleto para las personas responsables del cuidado de un ser querido que recibe tratamiento para el cncer. Ofrece informacin prctica y apoyo para ayudarlas a sobrellevar este perodo difcil y estresante.

  8. 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.

  9. RVA: A Plugin for ParaView 3.14

    SciTech Connect

    2015-09-04

    RVA is a plugin developed for the 64-bit Windows version of the ParaView 3.14 visualization package. RVA is designed to provide support in the visualization and analysis of complex reservoirs being managed using multi-fluid EOR techniques. RVA, for Reservoir Visualization and Analysis, was developed at the University of Illinois at Urbana-Champaign, with contributions from the Illinois State Geological Survey, Department of Computer Science and National Center for Supercomputing Applications. RVA was designed to utilize and enhance the state-of-the-art visualization capabilities within ParaView, readily allowing joint visualization of geologic framework and reservoir fluid simulation model results. Particular emphasis was placed on enabling visualization and analysis of simulation results highlighting multiple fluid phases, multiple properties for each fluid phase (including flow lines), multiple geologic models and multiple time steps. Additional advanced functionality was provided through the development of custom code to implement data mining capabilities. The built-in functionality of ParaView provides the capacity to process and visualize data sets ranging from small models on local desktop systems to extremely large models created and stored on remote supercomputers. The RVA plugin that we developed and the associated User Manual provide improved functionality through new software tools, and instruction in the use of ParaView-RVA, targeted to petroleum engineers and geologists in industry and research. The RVA web site (http://rva.cs.illinois.edu) provides an overview of functions, and the development web site (https://github.com/shaffer1/RVA) provides ready access to the source code, compiled binaries, user manual, and a suite of demonstration data sets. Key functionality has been included to support a range of reservoirs visualization and analysis needs, including: sophisticated connectivity analysis, cross sections through simulation results between selected wells, simplified volumetric calculations, global vertical exaggeration adjustments, ingestion of UTChem simulation results, ingestion of Isatis geostatistical framework models, interrogation of joint geologic and reservoir modeling results, joint visualization and analysis of well history files, location-targeted visualization, advanced correlation analysis, visualization of flow paths, and creation of static images and animations highlighting targeted reservoir features.

  10. RVA: A Plugin for ParaView 3.14

    Energy Science and Technology Software Center (ESTSC)

    2015-09-04

    RVA is a plugin developed for the 64-bit Windows version of the ParaView 3.14 visualization package. RVA is designed to provide support in the visualization and analysis of complex reservoirs being managed using multi-fluid EOR techniques. RVA, for Reservoir Visualization and Analysis, was developed at the University of Illinois at Urbana-Champaign, with contributions from the Illinois State Geological Survey, Department of Computer Science and National Center for Supercomputing Applications. RVA was designed to utilize andmoreenhance the state-of-the-art visualization capabilities within ParaView, readily allowing joint visualization of geologic framework and reservoir fluid simulation model results. Particular emphasis was placed on enabling visualization and analysis of simulation results highlighting multiple fluid phases, multiple properties for each fluid phase (including flow lines), multiple geologic models and multiple time steps. Additional advanced functionality was provided through the development of custom code to implement data mining capabilities. The built-in functionality of ParaView provides the capacity to process and visualize data sets ranging from small models on local desktop systems to extremely large models created and stored on remote supercomputers. The RVA plugin that we developed and the associated User Manual provide improved functionality through new software tools, and instruction in the use of ParaView-RVA, targeted to petroleum engineers and geologists in industry and research. The RVA web site (http://rva.cs.illinois.edu) provides an overview of functions, and the development web site (https://github.com/shaffer1/RVA) provides ready access to the source code, compiled binaries, user manual, and a suite of demonstration data sets. Key functionality has been included to support a range of reservoirs visualization and analysis needs, including: sophisticated connectivity analysis, cross sections through simulation results between selected wells, simplified volumetric calculations, global vertical exaggeration adjustments, ingestion of UTChem simulation results, ingestion of Isatis geostatistical framework models, interrogation of joint geologic and reservoir modeling results, joint visualization and analysis of well history files, location-targeted visualization, advanced correlation analysis, visualization of flow paths, and creation of static images and animations highlighting targeted reservoir features.less

  11. Perspectivas Futuras para o Observatrio do Pico dos Dias

    NASA Astrophysics Data System (ADS)

    Bruch, Albert

    2004-02-01

    Com o Observatrio Gemini plenamente operacional e o telescpio SOAR iniciando suas operaes em breve, a astronomia observacional brasileira encontra-se no auge de uma transformao profunda que ter um impacto grave no Observatrio do Pico dos Dias - OPD. Refletimos aqui sobre a natureza desse impacto e estratgias para manter a competitividade do OPD. No queremos apresentar receitas prontas, mas idias que podero servir como base de discusso sobre o uso inteligente dos telescpios do OPD como parte do conjunto de instrumentos disponveis comunidade astronmica brasileira.

  12. ORTHO-PARA SELECTION RULES IN THE GAS-PHASE CHEMISTRY OF INTERSTELLAR AMMONIA

    SciTech Connect

    Faure, A.; Hily-Blant, P.; Le Gal, R.; Rist, C.

    2013-06-10

    The ortho-para chemistry of ammonia in the cold interstellar medium is investigated using a gas-phase chemical network. Branching ratios for the primary reaction chain involved in the formation and destruction of ortho- and para-NH{sub 3} were derived using angular momentum rules based on the conservation of the nuclear spin. We show that the 'anomalous' ortho-to-para ratio of ammonia ({approx}0.7) observed in various interstellar regions is in fact consistent with nuclear spin selection rules in a para-enriched H{sub 2} gas. This ratio is found to be independent of temperature in the range 5-30 K. We also predict an ortho-to-para ratio of {approx}2.3 for NH{sub 2}. We conclude that a low ortho-to-para ratio of H{sub 2} naturally drives the ortho-to-para ratios of nitrogen hydrides below the statistical values.

  13. Orientational ordering in monolayers of ortho-para hydrogen

    NASA Astrophysics Data System (ADS)

    Kokshenev, V. B.; Sullivan, N. S.

    2003-09-01

    We discuss orientational ordering in monolayers of solid hydrogen in view of recent experimental findings in NMR studies of (ortho)c-(para)1-c-hydrogen mixtures on a boron nitride substrate. Analysis of the temperature-concentration behavior for the observed NMR frequency splitting is given on the basis of a two-dimensional (J=1)c-(J=0)1-c-rotor model with the quadrupolar coupling constant ?0=(0.500.03) K and the crystalline field amplitude V0=(0.700.10) K derived from experiment. The two distinct pararotational short-range ordered structures are described in terms of the local alignment and orientation of the polar principal axis and are shown to be due to the interplay between the positive and negative crystalline fields. It is shown that the local structures observed below the 2D site-percolation threshold cp=0.72 are rather different from the ferromagnetic-type para-rotational ordering suggested earlier by Harris and Berlinsky.

  14. Biodegradation of Para Amino Acetanilide by Halomonas sp. TBZ3

    PubMed Central

    Hajizadeh, Nader; Sefidi Heris, Youssof; Zununi Vahed, Sepideh; Vallipour, Javad; Hejazi, Mohammad Amin; Golabi, Sayyed Mahdi; Asadpour-Zeynali, Karim; Hejazi, Mohammad Saeid

    2015-01-01

    Background: Aromatic compounds are known as a group of highly persistent environmental pollutants. Halomonas sp. TBZ3 was isolated from the highly salty Urmia Lake of Iran. In this study, characterization of a new Halomonas isolate called Halomonas sp. TBZ3 and its employment for biodegradation of para-amino acetanilide (PAA), as an aromatic environmental pollutant, is described. Objectives: This study aimed to characterize the TBZ3 isolate and to elucidate its ability as a biodegradative agent that decomposes PAA. Materials and Methods: Primarily, DNA-DNA hybridization between TBZ3, Halomonas denitrificans DSM18045T and Halomonas saccharevitans LMG 23976T was carried out. Para-amino acetanilide biodegradation was assessed using spectrophotometry and confirmed by gas chromatography-mass spectroscopy (GC-MS). Parameters effective on biodegradation of PAA were optimized by the Response Surface Methodology (RSM). Results: The DNA-DNA hybridization experiments between isolate TBZ3, H. denitrificans and H. saccharevitans revealed relatedness levels of 57% and 65%, respectively. According to GC-MS results, TBZ3 degrades PAA to benzene, hexyl butanoate, 3-methyl-1-heptanol and hexyl hexanoate. Temperature 32.92C, pH 6.76, and salinity 14% are the optimum conditions for biodegradation with a confidence level of 95% (at level ? = 0.05). Conclusions: According to our results, Halomonas sp. TBZ3 could be considered as a biological agent for bioremediation of PAA and possibly other similar aromatic compounds. PMID:26495103

  15. 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.

  16. 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.

  17. Cosmoeducao: 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 cosmoeducao o desenvolvimento vivencial da unidade homem-cosmo. Este conceito norteado pela psicologia transpessoal, que estuda o ser humano em sua totalidade, onde suas relaes ecolgicas e csmicas so de grande importncia. Constata-se uma necessidade latente no ser humano moderno em resgatar uma relao holstica com o Universo. Neste trabalho exploramos meios de cultivar a conscincia de que o ser humano constitui parte integrante do cosmo e se relaciona com este com o objetivo de promover em si uma percepo ambiental mais ampla. Nossa hiptese de trabalho inicial foi que o ensino de contedos bsicos em astronomia realizado atravs de uma abordagem holstica, que incorpore prticas vivenciais correlacionadas queles contedos, pode despertar no indivduo sua identidade csmica. O mtodo que utilizamos o fenomenolgico e o universo desta pesquisa um grupo de estudantes da disciplina de Astronomia (Curso de Licenciatura em Geografia/UFRN), onde realizamos observao participante, entrevistas, depoimentos e as prticas vivenciais mencionadas. Neste caso estamos desenvolvendo e adaptando exerccios de algumas tcnicas teraputicas de psicologia transpessoal, que um de ns (LALM) tem aplicado no contexto clnico, para trabalhar aspectos cognitivos envolvidos naquele processo de conscientizao csmica. Resultados parciais claramente referendam a hiptese inicial. Um resultado a destacar fruto de uma dinmica de representao corporal interiorizada do eclipse lunar, envolvendo um pequeno grupo daqueles estudantes, na qual contedos mticos afloraram de maneira espontnea e contundente para todos, sugerindo ressonncia, ou pelo menos isomorfismo, entre o macro e o microcosmo. Este e outros resultados so discutidos em detalhe neste trabalho. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temticos/FAPESP).

  18. Por favor visite newark.rutgers.edu/strategic-plan-implementation para ms informacin sobre el proceso de plan estratgico.

    E-print Network

    Neimark, Alexander V.

    las capacidades y talentos de los empleados para la misin general de nuestra institucin". Para- equipos, enfocados en las siguientes reas: gestin de talento para empleados, desarrollo profesional reportes de los evaluadores externos: todos contribuirn en deliberaciones futuras. Gestin de Talento para

  19. Neoplasias mieloproliferativas y sndromes mielodisplsicosVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento de las neoplasias mieloproliferativas, as como referencias a estudios clnicos y otros temas relacionados.

  20. Ortho-para mixing hyperfine interaction in the H2O+ ion and nuclear spin equilibration.

    PubMed

    Tanaka, Keiichi; Harada, Kensuke; Oka, Takeshi

    2013-10-01

    The ortho to para conversion of water ion, H2O(+), due to the interaction between the magnetic moments of the unpaired electron and protons has been theoretically studied to calculate the spontaneous emission lifetime between the ortho- and para-levels. The electron spin-nuclear spin interaction term, Tab(Sa?Ib + Sb?Ia) mixes ortho (I = 1) and para (I = 0) levels to cause the "forbidden" ortho to para |?I| = 1 transition. The mixing term with Tab = 72.0 MHz is 4 orders of magnitude higher for H2O(+) than for its neutral counterpart H2O where the magnetic field interacting with proton spins is by molecular rotation rather than the free electron. The resultant 10(8) increase of ortho to para conversion rate possibly makes the effect of conversion in H2O(+) measurable in laboratories and possibly explains the anomalous ortho to para ratio recently reported by Herschel heterodyne instrument for the far-infrared (HIFI) observation. Results of our calculations show that the ortho ? para mixings involving near-degenerate ortho and para levels are high (?10(-3)), but they tend to occur at high energy levels, ?300 K. Because of the rapid spontaneous emission, such high levels are not populated in diffuse clouds unless the radiative temperature of the environment is very high. The low-lying 101 (para) and 111 (ortho) levels of H2O(+) are mixed by ?10(-4) making the spontaneous emission lifetime for the para 101 ? ortho 000 transition 520 years and 5200 years depending on the F value of the hyperfine structure. Thus the ortho ? para conversion due to the unpaired electron is not likely to seriously affect thermalization of interstellar H2O(+) unless either the radiative temperature is very high or number density of the cloud is very low. PMID:23530629

  1. Features of the ancestral bilaterian inferred from Platynereis dumerilii ParaHox genes

    PubMed Central

    Hui, Jerome HL; Raible, Florian; Korchagina, Natalia; Dray, Nicolas; Samain, Sylvie; Magdelenat, Ghislaine; Jubin, Claire; Segurens, Batrice; Balavoine, Guillaume; Arendt, Detlev; Ferrier, David EK

    2009-01-01

    Background The ParaHox gene cluster is the evolutionary sister to the Hox cluster. Whilst the role of the Hox cluster in patterning the anterior-posterior axis of bilaterian animals is well established, and the organisation of vertebrate Hox clusters is intimately linked to gene regulation, much less is known about the more recently discovered ParaHox cluster. ParaHox gene clustering, and its relationship to expression, has only been described in deuterostomes. Conventional protostome models (Drosophila melanogaster and Caenorhabditis elegans) are secondarily derived with respect to ParaHox genes, suffering gene loss and cluster break-up. Results We provide the first evidence for ParaHox gene clustering from a less-derived protostome animal, the annelid Platynereis dumerilii. Clustering of these genes is thus not a sole preserve of the deuterostome lineage within Bilateria. This protostome ParaHox cluster is not entirely intact however, with Pdu-Cdx being on the opposite end of the same chromosome arm from Pdu-Gsx and Pdu-Xlox. From the genomic sequence around the P. dumerilii ParaHox genes the neighbouring genes are identified, compared with other taxa, and the ancestral arrangement deduced. Conclusion We relate the organisation of the ParaHox genes to their expression, and from comparisons with other taxa hypothesise that a relatively complex pattern of ParaHox gene expression existed in the protostome-deuterostome ancestor, which was secondarily simplified along several invertebrate lineages. Detailed comparisons of the gene content around the ParaHox genes enables the reconstruction of the genome surrounding the ParaHox cluster of the protostome-deuterostome ancestor, which existed over 550 million years ago. PMID:19627570

  2. 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

  3. 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.

  4. DYNA3D/ParaDyn Regression Test Suite Inventory

    SciTech Connect

    Lin, J I

    2011-01-25

    The following table constitutes an initial assessment of feature coverage across the regression test suite used for DYNA3D and ParaDyn. It documents the regression test suite at the time of production release 10.1 in September 2010. The columns of the table represent groupings of functionalities, e.g., material models. Each problem in the test suite is represented by a row in the table. All features exercised by the problem are denoted by a check mark in the corresponding column. The definition of ''feature'' has not been subdivided to its smallest unit of user input, e.g., algorithmic parameters specific to a particular type of contact surface. This represents a judgment to provide code developers and users a reasonable impression of feature coverage without expanding the width of the table by several multiples. All regression testing is run in parallel, typically with eight processors. Many are strictly regression tests acting as a check that the codes continue to produce adequately repeatable results as development unfolds, compilers change and platforms are replaced. A subset of the tests represents true verification problems that have been checked against analytical or other benchmark solutions. Users are welcomed to submit documented problems for inclusion in the test suite, especially if they are heavily exercising, and dependent upon, features that are currently underrepresented.

  5. ras dos dcadas en las que el Consejo Supremo para la Revolucin Islmi-

    E-print Network

    Garca-Berthou, Emili

    T ras dos dcadas en las que el Consejo Supremo para la Revolucin Islmi- ca (CSRI) en Iraq ha Consejo Supre- mo para la Revolucin Islmica en Iraq fue creado en 1982 por Mohammed Baqir Al Ha- kim, un- dam en el 2003 y ha con- tado con el respaldo del Gobierno islamista de Irn. Se cree que su ala

  6. Publicacin de Propuesta Presupuestaria del NCI para el Ao Fiscal 2017

    Cancer.gov

    Ayer, tuve el honor de presentar al Presidente Barack Obama el Plan Anual del NCI y Propuesta Presupuestaria para el Ao Fiscal 2017. Creo que la Propuesta Presupuestaria, como se conoce ahora, es especialmente importante este ao para la investigacin oncolgica por dos razones.

  7. Conformal Euler-Lagrangian Equations on Para-Quaternionic Kahler Manifolds

    E-print Network

    Zeki Kasap; Mehmet Tekkoyun

    2012-09-21

    This manuscript presents an attempt to introduce Lagrangian formalism for mechanical systems using para-quaternionic Kahler manifolds, which represent an interesting multidisciplinary field of research. In addition to, the geometrical-physical results related to para-quaternionic Kahler mechanical systems are also given.

  8. Ortho-Para Mixing Hyperfine Interaction in the H2O+ Nuclear Spin Equilibration

    E-print Network

    Oka, Takeshi

    Ortho-Para Mixing Hyperfine Interaction in the H2O+ Ion and Nuclear Spin Equilibration Keiichi, United States *S Supporting Information ABSTRACT: The ortho to para conversion of water ion, H2O+ , due higher for H2O+ than for its neutral counterpart H2O where the magnetic field interacting with proton

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

    E-print Network

    de Figueiredo, Luiz Henrique

    CLE 2011 Um framework para renderizaes foto-realistas de cenas com realidade aumentada Aldo Ren aumentada foto-realista conseguir um resultado foto realista a traves de uma nica renderizao direta.elsevier.nl/locate/entcs #12;1 Introduo Para a industria do cinema e outras que dependem de imagens foto-realistas,

  10. 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

  11. MAPA DE RIESGO DE EROSIN DE SUELO PARA LA CUENCA DEL RIO YAGEZ EN PUERTO RICO

    E-print Network

    Gilbes, Fernando

    , RUSLE (por sus siglas en ingles), es comnmente utilizada para la estimacin anual de prdida de suelos-RUSLE (por sus siglas en ingles). Objetivos del Estudio El principal objetivo del presente estudio fue utilizando el modelo de prdida de suelos universal revisado (RUSLE) por sus siglas en ingles, para

  12. Desarrollo y Aplicacin de un ndice de Calidad de Agua para ros en Puerto Rico

    E-print Network

    Gilbes, Fernando

    Desarrollo y Aplicacin de un ndice de Calidad de Agua para ros en Puerto Rico por Francisco J en INGENIERA CIVIL UNIVERSIDAD DE PUERTO RICO RECINTO UNIVERSITARIO DE MAYAGEZ 2009 Aprobado por trabajo presenta la elaboracin de un ndice de Calidad de Agua (ICA) para los ros en Puerto Rico. Dicho

  13. CURSO CECLEC. Universidad de Alicante INVESTIGACIN CUALITATIVA EN SALUD PBLICA: ENFOQUES PARA EL ANLISIS Y

    E-print Network

    Escolano, Francisco

    CURSO CECLEC. Universidad de Alicante INVESTIGACIN CUALITATIVA EN SALUD PBLICA: ENFOQUES PARA EL. Facultad de Ciencias de la Salud. Departamento de Enfermera Comunitaria, Medicina Preventiva y Salud metodologas cualitativas para la investigacin en salud pblica. 2. Familiarizarse el proceso de la

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

    E-print Network

    GENERAL TECHNICAL REPORT PSW-GTR-245 168 Metodologa Utilizada en Cuba para Estimar las Prdidas recursos. En este trabajo se presenta la metodologa utilizada en Cuba para estimar las prdidas econmicas Pinar del Ro, Cuba; Email: cmramos@af.upr.edu.cu 3 Departamento de Manejo del Fuego, Direccin Nacional

  15. Uso de herramientas informticas para analizar la autora e influencias mutuas de los libros

    E-print Network

    Alfonseca, Manuel

    Uso de herramientas informáticas para analizar la autoría e influencias mutuas de los libros del de control, se ha utilizado el mismo procedimiento para comparar libros de autores conocidos de sus 27 libros y cómo se influyeron unos a otros duran desde hace siglos y constituyen E S T U D I

  16. Primer registro para Peru del genero Nielsonia Young, 1977 (Hemiptera: Cicadellidae: Cicadellinae: Cicadellini)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    En este articulo se reporta por primera vez para el Peru una especies del genero Nielsonia Young, 1977, de material procedente del Departamento de Tumbes. El genero ha sido reportada anteriormente de Ecuador, como unico registro para Sudamerica, y America Central. El unico especimen hembra encontra...

  17. Nueva opcin de tratamiento para mujeres jvenes con cncer de seno sensible a las hormonas

    Cancer.gov

    Un frmaco usado para el tratamiento del cncer de seno (mama), conocido como exemestano, es ms eficaz que tamoxifeno, un frmaco preventivo de uso comn para el cncer de seno, en la prevencin de la recidiva del cncer de seno en mujeres jvenes que ta

  18. The parA resolvase performs site-specific genomic excision in Arabidopsis

    Technology Transfer Automated Retrieval System (TEKTRAN)

    We have designed a site-specific excision detection system in Arabidopsis to study the in planta activity of the small serine recombinase ParA. Using a transient expression assay as well as stable transgenic plant lines, we show that the ParA recombinase is catalytically active and capable of perfo...

  19. EDITAL DO PROCESSO DE SELEO PARA INGRESSO EM 2016 NOS CURSOS DE MESTRADO E DOUTORADO DO

    E-print Network

    Floeter, Sergio Ricardo

    EDITAL DO PROCESSO DE SELEO PARA INGRESSO EM 2016 NOS CURSOS DE MESTRADO E DOUTORADO DO PROGRAMA candidatos aos Cursos de Mestrado e de Doutorado em Administrao, para o perodo letivo que ter incio em linha de pesquisa, destinadas aos portadores de diplomas de mestre, com curso realizado em instituio

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

    E-print Network

    Escolano, Francisco

    Becas para la realizacin de estudios universitarios durante el curso acadmico 2014-2015 en las primera vez. Qu incluye la beca? Becas para la realizacin de estudios universitarios durante el curso la realizacin de estudios universitarios durante el curso acadmico 2014-2015 en las universidades

  1. EDITAL DE PROCESSO SELETIVO PARA INGRESSO EM 2015 NOS CURSOS DE MESTRADO E DOUTORADO DO

    E-print Network

    Hanazaki, Natalia

    EDITAL DE PROCESSO SELETIVO PARA INGRESSO EM 2015 NOS CURSOS DE MESTRADO E DOUTORADO DO PROGRAMA DE candidatos aos Cursos de Mestrado e de Doutorado em Administrao, para o perodo letivo que ter incio em pesquisa, destinadas aos portadores de diplomas de mestre, com curso realizado em instituio reconhecida

  2. RESOLUO N 62/03-CEPE Estabelece normas gerais nicas para os cursos de

    E-print Network

    Paran, Universidade Federal do

    RESOLUO N 62/03-CEPE Estabelece normas gerais nicas para os cursos de ps-graduao stricto doutorado. 1 - O mestrado no constitui obrigatoriamente requisito prvio para inscrio no curso de doutorado. 2 - Os cursos de mestrado podero ter seus currculos organizados na forma de mestrado

  3. [The place of para-aortic lymphadenectomy in gynaecological malignancies. An old debate].

    PubMed

    Philippe, Anne-Ccile; Dauplat, Jacques; Martinez, Alejandra; Canis, Michel; Bourdel, Nicolas; Ferron, Gwenal; Pomel, Christophe

    2014-04-01

    There is a lack of prospective randomized trial and scientific evidence for the use of para-aortic lymphadenectomy in gynaecological malignancies. This results in variations between countries for its utility. Based on the recommandations of the French Institute of Cancer (INCa), we open the debate of the place of para-aortic lymphadenectomy. PMID:24793624

  4. Opciones de ciruga para mujeres con CDIS o con cncer de seno

    Cancer.gov

    Contiene informacin sobre los tipos de ciruga de seno, como la operacin para conservar el seno y la mastectoma, y ayuda a las mujeres diagnosticadas con CDIS o con cncer de seno a decidir cul ciruga es la ms conveniente para ellas.

  5. ECCB 2005 Pages 12 Evolution of the Vertebrate ParaHox Clusters

    E-print Network

    Stadler, Peter F.

    -known Hox genes. Just as the Hox gene clusters, ParaHox genes form clusters and are linked to receptor Hox-related homeobox genes. The evolution of this sister of the Hox- gene clusters has been studied. Results: Three of the four human ParaHox loci are linked with PDGFR family tyrosine kinases. We

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

    E-print Network

    Groisman, Pablo

    Matemtica para ubicarse En cualquier lugar del planeta y ms all con el GPS matbaires 09 Pablo Groisman Dpto. de Matemtica FCEN-UBA CONICET #12; Qu es GPS? #12; Aplicaciones #12 correccin de errores para los GPS. Reloj atmico que marca la hora oficial de EEUU. (In) presicin: 1

  7. Producing and quantifying enriched para-H2 Brian A. Tom,1

    E-print Network

    McCall, Benjamin J.

    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. 2009 converter consists of a locally modified commercial closed-cycle 4 He cryostat. Austenitic stainless steel

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

    E-print Network

    Valencia, Universidad de

    UNA ARQUITECTURA SEGMENTADA PARA EL CLCULO DEL TIEMPO AL IMPACTO CON VISIN LOG-POLAR Jose A comunicacin presenta una arquitectura segmentada basada en lgica reconfigurable para procesamiento de imgenes a alta velocidad. La arquitectura est orientada a la optimizacin de algoritmos diferenciales de

  9. Uso del conocimiento de la arquitectura Fermi para mejorar el rendimiento en aplicaciones

    E-print Network

    Llanos, Diego R.

    Uso del conocimiento de la arquitectura Fermi para mejorar el rendimiento en aplicaciones CUDA Yuri arquitectura Fermi de NVIDIA introduce nuevos criterios a la hora de selec- cionar los tama~nos y la geometr arquitectura para aplicar adecua- damente tecnicas de optimizacion de codigo. Fermi [2] [3] [4] es la

  10. Arquitectura Multiagente para la Gestin de Informacin de Awareness en Entornos CSCL

    E-print Network

    Guerrero, Luis

    Arquitectura Multiagente para la Gestin de Informacin de Awareness en Entornos CSCL Ivn D razn, este artculo presenta una Arquitectura Multiagentes como alternativa para la gestin de usuario mediante una Arquitectura Multiagente que permite gestionar la informacin de Conciencia Grupal o

  11. Females prefer carotenoid colored males as mates in the pentamorphic livebearing fish, Poecilia parae.

    PubMed

    Bourne, Godfrey R; Breden, Felix; Allen, Teresa C

    2003-09-01

    The first results of female preference and chosen male mating success in a new model organism, the pentamorphic livebearing fish, Poecilia parae, are presented. Poecilia parae is a relative of the guppy, P. reticulata, and is assumed to have similar reproductive behavior. We tested the hypothesis that P. parae females, like female guppies, prefer carotenoid colored males as mates. Here we show that the time a female spent with males was significantly greater for carotenoid coloration in red and yellow melanzona, but time with these two morphs did not differ. The preferred red and yellow males mated significantly more often with their choosing females than did the non-preferred blue and parae males. The few blue melanzona and parae males that mated did so without performing courtship displays. Some females mated with all phenotypes including immaculata males during open group trials. Female P. parae clearly preferred males with carotenoid coloration, thereby corroborating the hypothesis. Alternative male mating tactics by blue melanzona, parae, and immaculata morphs and promiscuous mating by females also resembled features of reproductive behaviors exhibited by guppies. PMID:14504782

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. Um enfoque antropolgico para o ensino de astronomia no nvel mdio

    NASA Astrophysics Data System (ADS)

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

    2003-08-01

    H uma enorme carncia de materiais didtico-pedaggicos em astronomia para professores do ensino mdio, sobretudo materiais que explorem tambm aspectos humansticos. A origem do Universo um bom exemplo desta constatao central. Embora tal origem teve explicaes culturais diversas, os professores no tm informaes sobre isso e muito menos material que trabalhe diferentes vises de mundo e treinamento que os capacite a abord-las devidamente. Conseqentemente 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 vises de Universo: espontneas, autctones e cientficas. Desenvolvemos prticas, materiais instrucionais e textos para viabilizar a adoo de um enfoque antropolgico para o ensino de astronomia no nvel mdio, no qual as culturas humanstica e cientfica sejam integradas de uma maneira contextualizada e eficaz para aquele ensino. Estas propostas foram aplicadas em um curso de treinamento para professores da rede pblica de diferentes disciplinas. A receptividade dos professores abordagem proposta e os resultados alcanados foram muito estimulantes. Destes, destacamos: produo de roteiros de atividades; desenvolvimento de prticas didtico-pedaggicas especficas (e.g., encenao de mitos; dana primordial guarani; "criao" de constelaes e interpretaes pluriculturais; etc.); e sugestes concretas para a efetiva realizao de um ensino interdisciplinar contextualizado, onde questes cosmognicas 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 histricos associados aos temas estudados. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temticos/FAPESP)

  17. Para-Tyrosine Supplementation Improves Insulin- and Liraglutide- Induced Vasorelaxation in Cholesterol-Fed Rats.

    PubMed

    Slley, Eszter; Kun, Szilrd; Krthy, Mria; Kovcs, Tibor; Wittmann, Istvn; Molnr, Gergo A

    2015-01-01

    Former data of our workgroup indicated that the accumulation of oxidized amino acids (meta- and ortho-tyrosine) due to oxidative stress may play an important role in the impaired insulininduced vasoactive properties of different arterial segments. There are evidences, that incorporation of these amino acids into cellular proteins leads to certain hormonal resistances, which might be restored by supplementation with the physiologic isoform, para-tyrosine. Rats in the control group were kept on a regular diet, rats in the cholesterol-fed group received high-fat diet, while the third group of rats received high-fat diet with para-tyrosine supplementation for 16 weeks. Plasma cholesterol level was significantly higher in the cholesterol-fed group, while the level of cholesterol in the cholesterol+para-tyrosine group did not differ significantly from that of the controls. Plasma level of insulin after glucose stimulation was decreased in the cholesterol-fed group, while that in the para-tyrosine supplemented group did not differ significantly from the controls. Vascular para-, meta- and ortho-tyrosine content was measured with HPLC. Elevated vascular meta-tyrosine/para-tyrosine ratio of cholesterol fed rats could be avoided by para-tyrosine supplementation. Vascular response of the thoracic aorta to insulin and liraglutide was assessed by a DMT multi-myograph. Cholesterol feeding resulted in vascular insulin-and liraglutide resistance, which was restored by para-tyrosine supplementation. Incorporation of the oxidative stress induced pathological tyrosine isoforms leads to vascular-hormone-resistances. We show that the physiological amino acid para-tyrosine is capable of restoring hypercholesterolemia-induced increased meta-tyrosine content of the vascular wall, thus attenuating functional vascular damage. PMID:26202368

  18. 75 FR 34943 - Defense Federal Acquisition Regulation Supplement; Para-Aramid Fibers and Yarns Manufactured in a...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-21

    ...Regulation Supplement; Para-Aramid Fibers and Yarns Manufactured in a Qualifying...acquisition of items containing para-aramid fibers and yarns manufactured in foreign countries...synthetic fabric, including textiles, fibers, and yarns for use in such...

  19. Measurement of the formaldehyde ortho to para ratio in three molecular clouds

    NASA Technical Reports Server (NTRS)

    Kahane, C.; Lucas, R.; Frerking, M. A.; Langer, W. D.; Encrenaz, P.

    1984-01-01

    Observations of ortho and para H2CO in two types of clouds, a warm cloud (Orion A) and two cold clouds (L183 and TMC1), are presented. The ortho to para ratio in Orion deduced from the H2(C-13)O data is about three, while that for TMC1 is about one and that for L183 is 1-2. The former value is in agreement with the value calculated from chemical models of ortho and para H2CO production. The values for the cold clouds are consistent with thermal equilibrium at a temperature slightly smaller than 10 K.

  20. Endovascular Treatment of a Ruptured Para-Anastomotic Aneurysm of the Abdominal Aorta

    SciTech Connect

    Sfyroeras, Giorgos S.; Lioupis, Christos Bessias, Nikolaos; Maras, Dimitris; Pomoni, Maria; Andrikopoulos, Vassilios

    2008-07-15

    We report a case of a ruptured para-anastomotic aortic aneurysm treated with implantation of a bifurcated stent-graft. A 72-year-old patient, who had undergone aortobifemoral bypass for aortoiliac occlusive disease 16 years ago, presented with a ruptured para-anastomotic aortic aneurysm. A bifurcated stent-graft was successfully deployed into the old bifurcated graft. This is the first report of a bifurcated stent-graft being placed through an 'end-to-side' anastomosed old aortobifemoral graft. Endovascular treatment of ruptured para-anastomotic aortic aneurysms can be accomplished successfully, avoiding open surgery which is associated with increased mortality and morbidity.

  1. Descripcin de la zona de alta difusin 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 simetra no suministran una descripcin detallada de las regiones donde la difusin es considerablemente importante. Tal es el caso de los modelos desarrollados en la dcada del '60 por Sweet, Parker, Petschek y Sonnerup. En esta comunicacin presentamos una solucin de las ecuaciones MHD en el entorno del origen, construyendo series bidimensionales para todas las magnitudes fsicas involucradas. Valindonos de la alta simetra y de las caractersticas del problema, logramos reducir el nmero de coeficientes a calcular. Utilizamos un programa autoconsistente para extender el clculo a regiones vecinas con difusin moderada o despreciable.

  2. Representacion y clasificacion de formas usando la ecuacion de Poisson

    E-print Network

    Granero, Rafael

    (un pixel negro es un 0 en la matriz de la imagen), extraer propiedades de dicha im´agen para poder silueta y medir los tiempos medios para cada punto que tardan estas part´iculas en golpear el contorno de(x, t) el tiempo medio que emplean estas part´iculas en golpear el contorno del dominio saliendo desde

  3. Molde de cemento para la superficie superior del molde de compresin de un pie protesico Shape&Roll.

    E-print Network

    Chisholm, Rex L.

    Molde de cemento para la superficie superior del molde de compresin de un pie protesico Shape Andrew Hansen, PhD. #12;Page 2 Arriba se muestra una palanca para hacer moldes de compresin que permitan superior, con cemento. El manual titulado "Realizar una bandeja de Cemento para el Molde de compresin del

  4. Erosin de suelo y mapa de riesgo para la cuenca del Ro Grande de Aasco, Puerto Rico

    E-print Network

    Gilbes, Fernando

    Erosin de suelo y mapa de riesgo para la cuenca del Ro Grande de Aasco, Puerto Rico ngel A hidrogrficas. La erosin del suelo es un aspecto que requiere de capital y tiempo para su evaluacin. Una serie de modelos paramtricos se han desarrollado para predecir la erosin de los suelos en las cuencas

  5. Contextual Factors that Foster or Inhibit Para-Teacher Professional Development: The Case of an Indian, Non-Governmental Organization

    ERIC Educational Resources Information Center

    Raval, Harini; McKenney, Susan; Pieters, Jules

    2012-01-01

    The appointment of para-professionals to overcome skill shortages and/or make efficient use of expensive resources is well established in both developing and developed countries. The present research concerns para-teachers in India. The literature on para-teachers is dominated by training for special needs settings, largely in developed societies.

  6. Um sistema de cache preditivo para o processamento em tempo-real de grandes volumes de dados graficos

    E-print Network

    de Figueiredo, Luiz Henrique

    Um sistema de cache preditivo para o processamento em tempo-real de grandes volumes de dados gr, 225, Rio de Janeiro, Brasil Abstract. Para visualizar objetos graficos em tempo-real e necessario superar com dois tipos de problema: tempo limitado de para efetuar o processo de rendering e espa

  7. FDA aprueba frmaco en combinacin para pacientes con cncer colorrectal avanzado

    Cancer.gov

    aprob una tableta que combina los frmacos trifluridina y clorhidrato de tipiracilo (Lonsurf) para tratar a pacientes con cncer colorrectal metasttico cuya enfermedad haya avanzado despus de tratamientos convencionales.

  8. Cncer de hgado y de conducto biliarVersin para profesionales de salud

    Cancer.gov

    Informacin del NCI para profesionales de salud sobre el tratamiento, la prevencin y los exmenes de deteccin del cncer de hgado y de conducto biliar, as como referencias a estudios clnicos, investigacin y otros temas.

  9. Cortes adicionais no ensino superior vista oramento Para alm da re-

    E-print Network

    Instituto de Sistemas e Robotica

    Ensino Superior, Jos Ferreira Gomes, ad- mitiu ontem, agncia Lusa, que as transferncias de dinheiro dinheiro para ter uma universidade em cada cidade". A Reorganizao da Rede de En- sino Superior tambm foi

  10. Violencia de Pareja en Mujeres Hispanas: Implicaciones para la Investigacin y la Prctica

    PubMed Central

    Gonzalez-Guarda, Rosa Maria; Becerra, Maria Mercedes

    2012-01-01

    Las investigaciones sobre la violencia entre parejas sugieren que las mujeres hispanas estn siendo afectadas desproporcionadamente por la ocurrencia y consecuencias de este problema de salud pblica. El objetivo del presente artculo es dar a conocer el estado del arte en relacin a la epidemiologia, consecuencias y factores de riesgo para VP entre mujeres Hispanas, discutiendo las implicaciones para la investigacin y la prctica. Investigaciones han demostrado una fuerte asociacin del status socioeconmico, abuso de droga y el alcohol, la salud mental, aculturacin, inmigracin, comportamientos sexuales riesgosos e historia de abuso con la violencia entre parejas. Sin embargo, ms estudios se deben llevar a cabo para identificar otros factores de riesgos y de proteccin a poblaciones hispanas no clnicas. Mientras que el conocimiento sobre la etiologa 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 prevencin primaria y secundaria de la violencia entre pareja. PMID:26166938

  11. Lo que usted debe saber antes de dar sus tejidos para investigacin mdica

    Cancer.gov

    Contiene informacin sobre las cosas que usted debe saber y tener en cuenta al tomar una decisin de donar sus tejidos para investigacin. El tejido puede incluir materiales de su cuerpo tales como piel, cabello, uas, sangre y orina.

  12. Infografa: beneficios y perjuicios de la prueba del PSA para la deteccin del cncer de prstata

    Cancer.gov

    Infografa que muestra los beneficios y perjuicios de la prueba del PSA para la deteccin del cncer de prstata, segn estimaciones de dos estudios sobre exmenes de deteccin del cncer de prstata.

  13. Cncer de ovario, de trompa de Falopio y primario de peritoneopara profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento, la prevencin, la gentica, las causas y los exmenes de deteccin del cncer de ovario, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas relacionados.

  14. Enfermedad trofoblstica de la gestacinVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento de la enfermedad trofoblstica de la gestacin, as como referencias a estudios clnicos y otros temas relacionados.

  15. HORA DE COMER COMER FUERA HOJA DE CONSEJOS PARA COMIDA RAPIDA

    E-print Network

    Zhou, Chongwu

    COMER COMER FUERA HOJA DE CONSEJOS PARA COMIDA RAPIDA Fresco Style = Una sabrosa fiesta salsa de tomates, cebolla, y cilantro remplaca el queso o la salsa de un platillo 15 `Fresco Style' platillos con

  16. Programa Ibermedia: Cine Transnacional Ibero-Americano O Relaciones Pblicas Para Espaa?

    E-print Network

    Falicov, Tamara L.

    2012-01-01

    ofrece un fondo que asiste a los distribuidores a subsidiar la distribucin de films latinoamericanos en Iberoamrica. Por ejemplo, en 2004 se le otorg un subsidio a Macondo Cine Video para distri- buir la coproduccin uruguayo-argentina Whisky...

  17. Cold-plasma assisted hydrophobisation of cellulose fibres with styrene and para-halogenated homologues

    NASA Astrophysics Data System (ADS)

    Gaiolas, C.; Costa, A. P.; Santos Silva, M. J.; Belgacem, M. N.

    2012-07-01

    Cold-plasma-assisted treatment of additive-free hand sheet paper samples with styrene (ST), para-fluorostyrene (FST), para-fluoro-?-methylstyrene (FMST) and para-chloro-?-methylstyrene (ClMST) and para-bromostyrene (BrST) was studied and found that the grafting has occurred efficiently, as established by contact angle measurement. Thus, after solvent extraction of the modified substrates, in order to remove unbounded grafts, the contact angle value of a drop of water deposited at the surface of paper increased from 40 for unmodified substrate to 102, 99, 116, 100 and 107, for ST-, FST- FMST-, ClMST- and BrST-treated samples, respectively, indicating that the surface has became totally hydrophobic. In fact, the polar component of the surface energy of treated samples decreased from 25 mJ/m2 to practically zero, indicating that treated surfaces were rendered totally non polar.

  18. Tumores extracraneales de clulas germinativasVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del tumor extracraneal de clulas germinativas en los nios, as como referencias a estudios clnicos y otros temas relacionados.

  19. The design and synthesis of linear and macrocyclic Poly(para-arylene)s

    E-print Network

    Batson, Joel Marcus

    2013-01-01

    Poly(para-phenylene) (PPP) has generated sustained scientific interest due to its potential as a blue-emitting material for use in Organic Light Emitting Devices (OLEDs). However, due to its highly unfavorable solubility, ...

  20. Cncer de la corteza suprarrenalVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del carcinoma de corteza suprarrenal, as como referencias a estudios clnicos, investigacin y otros temas relacionados con este tipo de cncer.

  1. Neoplasias de clulas plasmticas (incluso mieloma mltiple)Versin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del mieloma mltiple y otras neoplasias de clulas plasmticas, as como referencias a estudios clnicos, investigacin, estadsticas y otros temas.

  2. DESARROLLO SOSTENIBLE: RETO PARA EMPRENDEDORES Y EMPRESARIOS Reconocer la conveniencia econmica,

    E-print Network

    Vsquez, Carlos

    DIPLOMADO DESARROLLO SOSTENIBLE: RETO PARA EMPRENDEDORES Y EMPRESARIOS Objetivo: Reconocer la conveniencia econmica, sociopoltica, legal y ambiental del desarrollo sostenible en emprendedores y empresarios. Perfil del Participante: Orientado a estudiantes de los ltimos aos, emprendedores, directivos

  3. Carcinoma de tumor primario desconocidoVersin para profesionales de salud

    Cancer.gov

    Informacin del Instituto Nacional del Cncer para profesionales de salud sobre el tratamiento del carcinoma de tumor primario desconocido, as como referencias a estudios clnicos y otros temas relacionados.

  4. 188 Oliveira et al. Quim. Nova SISTEMA DE INJEO EM FLUXO ESPECTROFOTOMTRICO PARA MONITORAR PERXIDO DE

    E-print Network

    Jardim, Wilson de Figueiredo

    188 Oliveira et al. Quim. Nova SISTEMA DE INJEO EM FLUXO ESPECTROFOTOMTRICO PARA MONITORAR injection analysis; foto-Fenton. ArtigoQuim. Nova, Vol. 24, No. 2, 188-190, 2001. INTRODUO A reao foto

  5. TEMARIO PARA EL EXAMEN DE BIOLOGIA CELULAR y MOLECULAR 1. Introduccin a la clula.

    E-print Network

    TEMARIO PARA EL EXAMEN DE BIOLOGIA CELULAR y MOLECULAR 1. Introduccin a la clula. La clula vista). Conceptos de mol, nmero de Avogadro, peso molecular y peso frmula. Medidas de la concentracin: porcentaje

  6. Um Framework para Proviso de QoS em Redes Mveis Sem Fio1

    E-print Network

    Colcher, Srgio

    proviso de QoS em redes mveis sem fio integrando solues isoladas encontradas na literatura. Esses gerenciamento de suas localizaes. Pode-se encontrar na literatura uma gama de trabalhos propondo solues para

  7. Um plano de rev italizao e propostas para travar a "degradao" do Areeiro

    E-print Network

    Instituto de Sistemas e Robotica

    definido "um plano de re- vitalizao" para o territrio da an- tiga freguesia de So Joo de Deus. O pelo territrio da antiga freguesia de So Joo de Deus, que se fundiu com a do Alto do Pina, ganhando

  8. Uso del punto de transicion en la seleccion de terminos indice para agrupamiento de textos cortos

    E-print Network

    Rosso, Paolo

    pertenecen al mismo domino. En caso de que el dominio sea desconocido, pueden em- plearse tecnicas de Sociedad Espaola para el Procesamiento del Lenguaje Natural #12;(Salton y Buckley, 1988); esto es, el peso

  9. Anlisis Molecular para Seleccin de Tratamientos (NCI-MATCH), estudio del NCI

    Cancer.gov

    Informacin sobre el estudio del NCI: Anlisis Molecular para Seleccin de Tratamientos (NCI-MATCH), en el cual los investigadores examinarn tejidos de tumor de pacientes con tumores slidos y linfomas avanzados que han dejado de responder al tratamiento.

  10. 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 Centrimtricas para Utilizar en los Sistemas de Informacin Desarrollo Tecnolgico Instrumentacin Distancimetros Total Stations + Cmara +GPS Laser Scanners GPS GPS Reference Stations GPS Internet Ready PDA Tecnologa Bluetooth Mapa de Puerto Rico

  11. Libros y parte de libro: plantilla normalizada para la descripcin de registros en Digital.CSIC

    E-print Network

    libro (ao) Don Quijote de la Mancha (2009) Para un captulo o parte: Ttulo del libro (n captulo): pp-pp (ao) Don Quijote de la Mancha 12: 1135-1144 (2005) SERIE dc.relation ispartofseries Opcional Nombre de

  12. Arquitecturas de Sistemas de Informao de Referncia para Atendimento Multicanal na Administrao Pblica

    E-print Network

    da Silva, Alberto Rodrigues

    Arquitecturas de Sistemas de Informao de Referncia para Atendimento Multicanal na Administrao heterognea em termos das tecnologias utilizadas. Prope-se ento uma arquitectura de sistemas de informao de arquitectura empresarial e alinhamento, como ferramen

  13. ComFiM -Um Jogo Colaborativo para Estimular a Comunicao de Crianas com Autismo

    E-print Network

    Barbosa, Alberto

    ComFiM - Um Jogo Colaborativo para Estimular a Comunicação de Crianças com Autismo Paula Ceccon desenvolvimento e a avalia¸c~ao de um jogo colaborativo chamado ComFiM, para interfa- ces m´oveis tang´iveis. O jogo foi desenvolvido com base nos requisitos de um grupo de crian¸cas com autismo, visando estimular

  14. Le lipome para testiculaire: propos d'un cas rare

    PubMed Central

    Lasri, Abdelouahed; Lamchahab, Hamza; Lahyani, Mounir; Karmouni, Tarik; Elkhader, Khalid; Koutani, Abdellatif; Andaloussi, Ahmed Ibn Attya

    2015-01-01

    Les tumeurs para testiculaires sont des tumeurs rares et complexes qui ont une symptomatologie insidieuse et pauvre. Les formes bnignes reprsentent 70%. Le lipome para testiculaire tant le type le plus frquent. L'examen clinique est peu spcifique. L'examen chographique est la pierre angulaire pour assoir le diagnostic. Le traitement chirurgical s'impose en cas de tumeur symptomatique, l'histologie tant habituellement typique permet la confirmation diagnostique. Le pronostic est bon malgr dventuelles rcidives. PMID:26175802

  15. Para-Selective Halogenation of Nitrosoarenes with Copper(II) Halides.

    PubMed

    van der Werf, Angela; Selander, Nicklas

    2015-12-18

    The para-selective direct bromination and chlorination of nitrosoarenes with copper(II) bromide and chloride is reported. Under mild reaction conditions, a range of halogenated arylnitroso compounds are obtained in moderate to good yields with high regioselectivity. Additionally, the versatility of the method is demonstrated by the development of a one-pot procedure to obtain the corresponding para-halogenated aniline- and nitrobenzene derivatives. PMID:26606695

  16. Estratgias de Integrao Reduzida para Clculo de Velocidades e Presses em Meios Porosos

    E-print Network

    Coutinho, Alvaro L. G. A.

    Estratégias de Integração Reduzida para Cálculo de Velocidades e Pressões em Meios Porosos C. M meios porosos e reservatórios de petróleo. Para tanto, propõe­se a utilização da Integração Reduzida na modelagem de problemas de escoamentos em meios porosos, incluindo a simulação numérica de

  17. 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 Resoluc~ao De Problemas De Layout Daniele Costa Silva formigas e propomos seu uso para resoluc~ao de problemas de layout. Palavras-Chaves. Col^onia de Formigas. Problemas de Layout. Metodos Heuristicos. 1 Introduc~ao O problema de layout e um problema antigo e ap

  18. SimTJS: A Model for Developing Serious Games for Training SimTJS: Uma Arquitetura para o Desenvolvimento de Jogos Serios para

    E-print Network

    Barbosa, Alberto

    Desenvolvimento de Jogos S´erios para Treinamento Daniel Trindade, Peter Dam, Alberto Raposo Tecgraf, Departamento jogos s´erios que imitam cen´arios reais, permitindo que os profissionais realizem operac¸~oes que antes componentes que comp~oem a arquitetura, al´em de exemplos de utilizac¸~ao da mesma. Keywords-Jogos S

  19. Physisorption and ortho-para conversion of molecular hydrogen on solid surfaces

    NASA Astrophysics Data System (ADS)

    Fukutani, K.; Sugimoto, T.

    2013-12-01

    Molecular hydrogen exists in nuclear-spin isomers of ortho and para species according to the total nuclear spin. These species are correlated to the rotational states with even and odd rotational quantum numbers because of the symmetry of the total wavefunction with respect to the permutation of the two nuclei. Although interconversion between the ortho and para states is extremely slow in an isolated state, the conversion is promoted in a physisorption state via interaction with surfaces of not only magnetic but also diamagnetic materials. In a physisorption state, the rotational motion of hydrogen molecules is modified due to the potential anisotropy. The physisorption properties and interconversion rate of the ortho and para hydrogen have recently been investigated on well-defined surfaces, which allow detailed comparison with theory. Furthermore, relative abundance of the ortho and para hydrogen in astronomical circumstances has been reported in recent years, which often shows a value out of equilibrium with the environment temperature. Physisorption and ortho-para conversion on the surfaces of interstellar media are expected to enable deeper understanding of astronomical phenomena. In this article, we review recent progress of experimental and theoretical studies on the physisorption and ortho-para conversion of molecular hydrogen and its relevance to the recent astronomical observation.

  20. A Diagnostic Assessment for the Teaching of Astronomy. (Spanish Title: Una Evaluacin Diagnstica Para la Enseanza de la Astronomia.) Uma Avaliao Diagnstica Para o Ensino da Astronomia

    NASA Astrophysics Data System (ADS)

    Pacifico Ribeiro de Assis Silveira, Felipa; Soares Gomes de Sousa, Clia Maria; Moreira, Antonio

    2011-07-01

    This article aims to present the results of a diagnostic evaluation, used as a tool for collecting data on prior knowledge of scientific concepts needed to understand the topic "Earth and Universe", from a group comprised of 47 students of 6th grade. The educational method of diagnosing the student's prior knowledge before teaching them is founded on the Meaningful Learning theory, proposed by David Ausubel. The diagnostic evaluation consisted of 25 questions; the answers were analyzed and categorized, making possible their interpretation, which allows us to understand the meanings assigned by the student to these concepts. It follows from the diagnostic evaluation, that the majority of students surveyed had difficulties in exposing scientific concepts on the topic "Earth and Universe" when starting the 6th grade. However, we identified relevant ideas and representations that contributed to the re-signification of scientific concepts proposed for the teaching of the subject in this grade. The results of diagnostic evaluation served as reference to the organization of the syllabus, making possible the learning process by matching the sequence of teaching to the students" characteristics and context of the classroom. It is expected that other researchers in this topic can also use the instrument presented in this paper. Este artculo tiene como objetivo presentar los resultados de una evaluacin diagnstica, utilizada como una herramienta para recoger datos sobre el conocimiento previo de los conceptos cientficos necesarios para comprender el tema "Tierra y Universo", de un grupo compuesto por 47 alumnos de 6 grado de la escuela primaria. La accin pedaggica del diagnstico de los conocimientos previos del estudiante antes de ensearles est justificada por la teora del Aprendizaje Significativo, propuesta por David Ausubel. La evaluacin de diagnstico consisti en 25 preguntas, las respuestas fueron analizadas y clasificadas objetivando-se su interpretacin, lo que nos permite comprender los significados asignados por el estudiante a estos conceptos. Se desprende de la evaluacin diagnstica que la mayora de los encuestados ha tenido dificultades para exponer los conceptos cientficos sobre el Universo y la Tierra, para iniciar el 6 grado. Sin embargo, se identificaron ideas relevantes y las representaciones que contribuyeron a la re-significacin de los conceptos cientficos propuestos para la enseanza del tema en esta serie. Los resultados de la evaluacin diagnstica han servido como referencia para la organizacin del Programa, facilitando el proceso de aprendizaje, haciendo coincidir la secuencia didctica a las caractersticas de los estudiantes y el contexto del aula. Se espera que el instrumento presentado en este documento tambin pueda ser utilizado por otros investigadores en investigaciones relacionadas con el tema. Este artigo tem como objetivo apresentar os resultados de uma avaliao diagnstica, utilizada como instrumento para a coleta de dados sobre o conhecimento prvio de conceitos cientficos, necessrios compreenso do tema Terra e Universo, de um grupo composto por 47 estudantes, da 6 srie do Ensino Fundamental. A ao pedaggica de diagnosticar os conhecimentos prvios, do estudante, antes de ensin-los, tem fundamento na teoria da Aprendizagem Significativa, proposta por David Ausubel. Essa avaliao diagnstica foi composta por 25 questes, cujas respostas foram analisadas e categorizadas visando sua interpretao, o que permitiu compreender os significados atribudos pelo estudante a esses conceitos. Conclui-se, a partir da avaliao diagnstica, que a maioria dos estudantes pesquisados apresentou dificuldades em expor conceitos cientficos sobre o tema Terra e Universo ao iniciar a 6 srie. Entretanto, foram identificadas ideias e representaes relevantes que contriburam para a (re)significao dos conceitos cientficos propostos para o ensino do tema nessa srie. Os resultados da a

  1. 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

  2. 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

  3. 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

  4. Electrical detection of ortho-para conversion in fullerene-encapsulated water

    NASA Astrophysics Data System (ADS)

    Meier, Benno; Mamone, Salvatore; Concistr, Maria; Alonso-Valdesueiro, Javier; Krachmalnicoff, Andrea; Whitby, Richard J.; Levitt, Malcolm H.

    2015-08-01

    Water exists in two spin isomers, ortho and para, that have different nuclear spin states. In bulk water, rapid proton exchange and hindered molecular rotation obscure the direct observation of two spin isomers. The supramolecular endofullerene H2O@C60 provides freely rotating, isolated water molecules even at cryogenic temperatures. Here we show that the bulk dielectric constant of this substance depends on the ortho/para ratio, and changes slowly in time after a sudden temperature jump, due to nuclear spin conversion. The attribution of the effect to ortho-para conversion is validated by comparison with nuclear magnetic resonance and quantum theory. The change in dielectric constant is consistent with an electric dipole moment of 0.51+/-0.05 Debye for an encapsulated water molecule, indicating the partial shielding of the water dipole by the encapsulating cage. The dependence of bulk dielectric constant on nuclear spin isomer composition appears to be a previously unreported physical phenomenon.

  5. Electrical detection of orthopara conversion in fullerene-encapsulated water

    PubMed Central

    Meier, Benno; Mamone, Salvatore; Concistr, Maria; Alonso-Valdesueiro, Javier; Krachmalnicoff, Andrea; Whitby, Richard J.; Levitt, Malcolm H.

    2015-01-01

    Water exists in two spin isomers, ortho and para, that have different nuclear spin states. In bulk water, rapid proton exchange and hindered molecular rotation obscure the direct observation of two spin isomers. The supramolecular endofullerene H2O@C60 provides freely rotating, isolated water molecules even at cryogenic temperatures. Here we show that the bulk dielectric constant of this substance depends on the ortho/para ratio, and changes slowly in time after a sudden temperature jump, due to nuclear spin conversion. The attribution of the effect to orthopara conversion is validated by comparison with nuclear magnetic resonance and quantum theory. The change in dielectric constant is consistent with an electric dipole moment of 0.510.05?Debye for an encapsulated water molecule, indicating the partial shielding of the water dipole by the encapsulating cage. The dependence of bulk dielectric constant on nuclear spin isomer composition appears to be a previously unreported physical phenomenon. PMID:26299447

  6. INTEGRACIN DE TECNOLOGA DE PERCEPCIN REMOTA Y GIS EN LA GENERACIN DEL MAPA DE USO DE SUELO PARA PUERTO RICO 2010

    E-print Network

    Gilbes, Fernando

    INTEGRACIN DE TECNOLOGA DE PERCEPCIN REMOTA Y GIS EN LA GENERACIN DEL MAPA DE USO DE SUELO aplicada para la generacin del mapa de uso de suelo para Puerto Rico para el ao 2010. La para el ao 2010 y una comparacin de los cambios de uso de suelo entre el ao 2003 y 2010. #12;

  7. Experiments at Scale with In-Situ Visualization Using ParaView/Catalyst in RAGE

    SciTech Connect

    Kares, Robert John

    2014-10-31

    In this paper I describe some numerical experiments performed using the ParaView/Catalyst in-situ visualization infrastructure deployed in the Los Alamos RAGE radiation-hydrodynamics code to produce images from a running large scale 3D ICF simulation on the Cielo supercomputer at Los Alamos. The detailed procedures for the creation of the visualizations using ParaView/Catalyst are discussed and several images sequences from the ICF simulation problem produced with the in-situ method are presented. My impressions and conclusions concerning the use of the in-situ visualization method in RAGE are discussed.

  8. ParaGraph-RTS: A parallel reduction-based run-time system

    SciTech Connect

    Yantis, B.; Rich, D.; Michelsen, R.

    1989-01-01

    We are investigating the use of the functional programming paradigm on multiprocessor computers. We have developed a parallel graph reduction run-time system called ParaGraph-RTS (Parallel Graph Reduction) that provides both significant amounts of exploitable parallelism and the robustness to support development of large scientific codes. This system allows us to empirically investigate the functional programming paradigm within computationally intensive application domains. In this paper, we describe an implementation of ParaGraph-RTS on a shared-memory multiprocessor. The implementation strategy reflects insights gained through performance characterizations of the reduction process. Preliminary performance results and analyses are presented. 8 refs., 4 figs.

  9. Use of thiosemicarbazone and para-nitrobenzoic acid in screening tests for anonymous mycobacteria

    PubMed Central

    Barrie, John D.

    1967-01-01

    In screening for anonymous mycobacteria the use of thiosemicarbazone (10?g./ml.) may give rise to false positive results. Although these can usually be overcome by further tests, additional time and effort is required, which seriously limits the value of thiosemicarbazone as a true screening agent. Para-nitrobenzoic acid (500 ?g./ml.) has proved more satisfactory in our hands; no false positive results have been obtained and it has the additional advantage that strains of M. kansasii (usually thiosemicarbazone sensitive) are resistant to para-nitrobenzoic acid. PMID:6016891

  10. 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

  11. Programa de CaPaCitaCin y eduCaCin en Seguridad y Salud Para trabajadoreS

    E-print Network

    Leistikow, Bruce N.

    Programa de CaPaCitaCin y eduCaCin en Seguridad y Salud Para trabajadoreS Como Pablo aprendi a trabajar con el ganado ComiSin de Salud y Seguridad y de ComPenSaCin al trabajador #12;Esta fotonovela es parte del Paquete de Entrenamiento para la Seguridad en Lecheras del Centro Occidental para la Salud y

  12. APLICACIONES DE BABA Y BTH EN BRINZALES DE PINUS PINASTER PARA LA INDUCIN DE

    E-print Network

    APLICACIONES DE BABA Y BTH EN BRINZALES DE PINUS PINASTER PARA LA INDUCIN DE RESISTENCIA ANTE actuar como elicitadores de los mecanismos defensivos de Pinus pinaster ante este patgeno. El vivero del Pas Vasco, sobre Pinus radiata y P. pinaster (LANDE- RAS et al., 2005). Recientemente, F

  13. 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

  14. APROXIMACIONES EFICIENTES PARA PROBLEMAS DE VIBRACIONES EN SISTEMAS FLUIDO-ESTRUCTURA

    E-print Network

    Armentano, María Gabriela

    APROXIMACIONES EFICIENTES PARA PROBLEMAS DE VIBRACIONES EN SISTEMAS FLUIDO-ESTRUCTURA Mario Scheblea , Maria Gabriela Armentanob y Claudio Padraa aGrupo de Mec´anica Computacional, Centro At, garmenta@mate.dm.uba.ar Palabras Clave: Vibraciones. Interacci´on fluido-estructura. Adaptividad hp

  15. Significado de los cambios en el cuello uterino: Gua para la salud de la mujer

    Cancer.gov

    Explica qu es la infeccin por el VPH; los exmenes de deteccin del cncer de cuello uterino, entre ellos la prueba de Pap, la prueba del VPH y la prueba conjunta de Pap y del VPH; las pautas para los exmenes de deteccin; los posibles resultados de la

  16. 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

  17. 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,

  18. Anlisis de aptitud para la expansin Drs P. Hofstee and Ir M. Brussel

    E-print Network

    de suelo existente. Iniciando Situado en Windows explorer cree un directorio de trabajo en el disco de uso de suelo urbano de 1991, mapas raster de peligros, pendientes, y distancia al centro de la para la orientacin. Luse91 Mapa raster de uso de suelo urbano en 1991. Cendist Mapa raster de las

  19. Physiological Relevance of Successive Hydroxylations of Toluene by Toluene para-Monooxygenase of Ralstonia pickettii

    E-print Network

    Wood, Thomas K.

    Physiological Relevance of Successive Hydroxylations of Toluene by Toluene para (TpMO) of Ralstonia pickettii PKO1 (encoded by tbuA1UBVA2C) performs successive hydroxylations of benzene (Appl. Environ. Microbiol. 70: 3814, 2004) as well as hydroxylates toluene to a mixture of 90% p

  20. Significado de los cambios en el cuello uterino: Gua para la salud de la mujer

    Cancer.gov

    Explica los pasos que deben seguirse despus de un resultado anormal en una prueba de Pap o del VPH, as como las formas de diagnosticar y tratar las afecciones en el cuello uterino. Tambin contiene informacin sobre las pautas para los exmenes de deteccin y las vacunas contra el VPH.

  1. Modelagem de Ambientes Ribeirinhos para Jogos Militares GUSTAVO HENRIQUE SOARES DE OLIVEIRA LYRIO

    E-print Network

    de Figueiredo, Luiz Henrique

    Modelagem de Ambientes Ribeirinhos para Jogos Militares GUSTAVO HENRIQUE SOARES DE OLIVEIRA LYRIO Pantanal. Workshop de Jogos 2003. p´agina 1 de 8 #12;Na Amaz^onia, o equil´ibrio entre a floresta e a sua

  2. Tempo de Converg^encia para o Equilibrio de Nash nos Jogos Empacotamento de Itens e

    E-print Network

    Vignatti, André L.

    Tempo de Converg^encia para o Equil´ibrio de Nash nos Jogos Empacotamento de Itens e Balanceamento Empacotamento Ego´ista Simult^aneo Balanceamento de Carga Ass´incrono Conc Quest~oes Interessantes: · O jogo

  3. Comienza la construccin de instalacin patrocinada por el NCI en Puerto Rico para realizar estudios

    Cancer.gov

    El gobierno de Puerto Rico ha destinado $196 millones de dlares para construir un hospital oncolgico de 287 000 pies cuadrados en San Juan, que contar con 96 camas. El nuevo hospital es el primero en su clase en la regin caribea y en l se llevarn a

  4. Una transicin difcil: los planes para supervivientes de cncer se afianzan con lentitud

    Cancer.gov

    El Instituto de Medicina recomienda que todos los pacientes que terminen el tratamiento del cncer reciban un plan de atencin para la etapa de supervivencia que les ayude a manejar su vida despus del tratamiento. Sin embargo, el progreso alcanzado en el mejoramiento y la puesta en marcha de estos planes ha sido desigual.

  5. Ortho-para conversion of endohedral water in the fullerene C60 at cryogenic temperatures

    NASA Astrophysics Data System (ADS)

    Shugai, Anna; Nagel, U.; Rm, T.; Mamone, S.; Concistr, M.; Meier, B.; Krachmalnicoff, A.; Whitby, R. J.; Levitt, M. H.; Lei, Xuegong; Li, Yongjun; Turro, N. J.

    2015-03-01

    Water displays the phenomenon of spin isomerism in which the two proton spins either couple to form a triplet (ortho water, I = 1) or a singlet nuclear spin state (para water, I = 0). Here we study the interconversion of para and ortho water. The exact mechanism of this process is still not fully understood. In order to minimize interactions between molecules we use a sample where a single H2O is trapped in the C60 molecular cage (H2O@C60)andH2O@C60iscrystallized.H2O@C60 has long-lived ortho state and ortho-para conversion kinetics is non-exponential at LHeT. We studied mixtures of H2O@C60, D2O@C60 and C60 using IR absorption, NMR and dielectric measurements. We saw the speeding up of the interconversion with the growth of H2O@C60 concentration in C60 or when D2O@C60 was added. At some temperatures the kinetics is exponential. Models are discussed in order to explain the T and concentration dependence of ortho-para interconversion kinetics. This work was supported by institutional research funding IUT23-3 of the Estonian Ministry of Education and Research.

  6. Comunicacin en la atencin del cncer (PDQ)Versin para pacientes

    Cancer.gov

    Resumen de la informacin revisada por expertos acerca de la comunicacin con el paciente de cncer y sus familiares, que incluye los aspectos distintivos de la comunicacin con pacientes de cncer, los factores que afectan la comunicacin y la capacitacin en aptitudes para la comunicacin.

  7. Determinacin de Criterios Numricos de Nutrimentos para Lagos y Reservas de Agua en Puerto Rico*

    E-print Network

    Gilbes, Fernando

    inventario Nacional de Calidad de Agua de los Estados Unidos identifica los nutrimentos como la principalDeterminacin de Criterios Numricos de Nutrimentos para Lagos y Reservas de Agua en Puerto Rico causa de contaminacin de las aguas. Ms de 3.4 millones de acre de lagos y 84,000 millas de ros estn

  8. DFT calculations for the structure and properties of polychlorodibenzo-para-dioxine anion-radicals

    SciTech Connect

    Borisov, Yurii A.; Garrett, Bruce C.; Mazunov, V. A.; Nekrasov, Yu S.

    2005-07-31

    Borisov, YA., BC. Garrett, VA. Mazunov, and YS. Nekrasov. 2005. DFT calculations for the structure and properties of polychlorodibenzo-para-dioxine anion-radicals, Journal of Structural Chemistry 46 (4): 591-595. http://www.springerlink.com/content/d361t549815667u7/fulltext.pdf

  9. Energia Renovable para Centros de Salud Rurales (Renewable Energy for Rural Health Clinics)

    SciTech Connect

    Jimenez, T.; Olson, K.

    1999-07-28

    Esta es la primera de una serie de guias de aplicaciones que el Programa de Energia de Villas de NREL esta comisionando para acoplar sistemas comerciales renovables con aplicaciones rurales, incluyendo agua, escuelas rurales y micro empresas. La guia esta complementada por las actividades de desarrollo del Programa de Energia de Villas de NREL, proyectos pilotos internacionales y programas de visitas profesionales.

  10. El estudio NCI-MATCH vincular medicamentos dirigidos para el cncer con anomalas genticas

    Cancer.gov

    Los investigadores del estudio a nivel nacional NCI-MATCH: Anlisis molecular para la eleccin de tratamientos, anunciaron que el estudio busca determinar la eficacia de los tratamientos dirigidos en personas con tumores que presentan mutaciones genticas especficas independientemente de su tipo de cncer.

  11. Inovao Tecnolgica em Portugal: Que papel para os Doutorados Paulo Ferreira1

    E-print Network

    Ferreira, Paulo J.

    Austin, TX, USA O veculo espacial Pathfinder, que recentemente aterrou no planeta Marte, foi concebido para tirar partido das condies atmosfricas de Marte. O Pathfinder est equipado com um escudo Marte, quando da entrada do Parthfinder no planeta. A reaco quimica produzida absorve energia

  12. Familiares a cargo de pacientes de cncer (PDQ)Versin para pacientes

    Cancer.gov

    Sumario informativo revisado por expertos acerca de los desafos que enfrentan los familiares a cargo de los pacientes con cncer. Este resumen se centra en las funciones tpicas y las inquietudes de las personas a cargo del paciente y en las intervenciones tiles para esas personas.

  13. Comunicacin en la atencin del cncer (PDQ)Versin para profesionales de salud

    Cancer.gov

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

  14. The Acquisition of Lexical Meaning in a Study Abroad Context: The Spanish Prepositions "por" and "para."

    ERIC Educational Resources Information Center

    Lafford, Barbara A.; Ryan, John M.

    1995-01-01

    Examination of the development of form/function relations of the prepositions "por" and "para" at different levels of proficiency in the interlanguage of study-abroad students in Granada, Spain, revealed "noncanonical" as well as "canonical" uses of these prepositions. The most common noncanonical uses were as substitutions for other prepositions

  15. 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 ...

  16. ParaMor and Morpho Challenge 2008 Christian Monson, Jaime Carbonell, Alon Lavie, Lori Levin

    E-print Network

    Lavie, Alon

    competed in Morpho Challenge. In Turkish, for example, the recall of the ParaMor-Morfessor system, at 52 morphology, Unsupervised learning, morphology induction 1 Introduction This paper describes the performance would like to know how much of the morphology of a language it is possible to learn from nothing but raw

  17. Planificar la transicin a la etapa final de la vida (PDQ)Versin para pacientes

    Cancer.gov

    Resumen de informacin revisada por expertos sobre la preparacin necesaria por parte de los proveedores de atencin de la salud, los pacientes y sus familias para la transicin a la atencin del cncer avanzado en la etapa final de la vida.

  18. Irradiation of para-aortic lymph node metastases from carcinoma of the cervix or endometrium

    SciTech Connect

    Komaki, R.; Mattingly, R.F.; Hoffman, R.G.; Barber, S.W.; Satre, R.; Greenberg, M.

    1983-04-01

    Twenty-two patients with biopsy-proved para-aortic lymph node metastases from carcinoma of the cervix (15 patients) or endometrium (7 patients) received a median dose of 5,000 rad/25 fractions. Para-aortic nodal metastases were controlled in 77% of cases. Control was significantly lower following radical retroperitoneal lymph node dissection than less extensive sampling procedures. Obstruction of the small bowel developed in 3 patients with tumor recurrence in the para-aortic region. Eight of the 10 patients who were disease-free at 2 years received >5,000 rad. Three patients were still alive without disease at 129, 63, and 60 months, respectively. The 5-year disease-free survival rate was 40% for cervical cancer and 60% for endometrial cancer: in the former group, it was significantly different depending on whether the para-aortic nodes were irradiated (40%) or not (0%). The authors suggest that 5,000-5,500 rad in 5-5.5 weeks is well tolerated and can control aortic nodal metastases in cervical and possibly endometrial cancer.

  19. SELECCIN DE ACACIAS PARA LA CONSTRUCCIN DE NIDOS DE AVES: UN BENEFICIO INDIRECTO DEL MUTULISMO

    E-print Network

    Cuervo, Andrs

    SELECCIN DE ACACIAS PARA LA CONSTRUCCIN DE NIDOS DE AVES: UN BENEFICIO INDIRECTO DEL MUTULISMO caducifolio centroamericano, y comnmente construyen sus nidos en acacias, principalmente en Acacia collinsii alimenta de las secreciones de los nectarios y los cuerpos de Belt de la de la acacia. Por su parte, la

  20. Desarrollo de un motor de paralelizacion especulativa con soporte para aritmetica de

    E-print Network

    Llanos, Diego R.

    on procesada en paralelo, para detectar y corregir las violaciones de dependencia que puedan aparecer en el lugar a violaciones de dependencia en su ejecucion paralela tanto, si cada uno consolida sus resultados la escritura y detecta violaciones de de- pendencia esporadicas

  1. Informe sobre la asignatura de Ecologa (clases tericas para el tercer curso de Biologa).

    E-print Network

    Seoane, Javier

    Informe sobre la asignatura de Ecologa (clases tericas para el tercer curso de Biologa). Javier Seoane, 31/07/08 [modificaciones el 04/08/08] Curso: 2007-2008 Grupo: 31 (maanas), segundo cuatrimestre clases (mi idea es que pueda redactar un informe en poco tiempo al acabar el curso). Conclusiones

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

    E-print Network

    Paran, Universidade Federal do

    RESOLUO N 42/03-COUN Fixa as normas para os Cursos de Especializao e Aperfeioamento da a graduados e constituda por cursos sistematicamente organizados, visando desenvolver, complementar, aprimorar ou aprofundar conhecimentos, com previso de obteno de certificados. 1 Os cursos normatizados

  3. CURSO ACADMICO 20___/20___ SOLICITUD DE PLAZA PARA CONTINUAR ESTUDIOS EN PLANES

    E-print Network

    Bilbao Arrese, Jess Mario

    CURSO ACADMICO 20___/20___ SOLICITUD DE PLAZA PARA CONTINUAR ESTUDIOS EN PLANES DE ESTUDIO, con PRIMER CURSO completo o 60 crditos aprobados en la Universidad de procedencia, que no hayan: DATOS ACADMICOS DEL SOLICITANTE: (Declaracin Jurada de su expediente acadmico). Curso/s completo/s

  4. RESOLUO N 65/09-CEPE Estabelece normas gerais nicas para os cursos de ps-

    E-print Network

    Paran, Universidade Federal do

    RESOLUO N 65/09-CEPE Estabelece normas gerais nicas para os cursos de ps- graduao stricto/2007-83 e por unanimidade de votos, RESOLVE: CAPTULO I DA CONSTITUIO E OBJETIVOS Art. 1 Os cursos de ps-graduao compreendem dois nveis hierarquizados de cursos stricto sensu: mestrado e doutorado. 1 Os cursos de

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

    E-print Network

    REFERNCIA PARA CANDIDATO A CURSO DE PS-GRADUAO I. DADOS DO CANDIDATO Nome: Curso Superior realizado: Universidade: Incio: Trmino: Curso pretendido no INPE: Nvel: Mestrado Doutorado II. DADOS DO Professor: O candidato acima pretende realizar Curso de Ps-Graduao no INPE. Gostaramos de contar com

  6. Informe sobre la asignatura de Ecologa (clases tericas para el tercer curso de Biologa).

    E-print Network

    Seoane, Javier

    Informe sobre la asignatura de Ecologa (clases tericas para el tercer curso de Biologa). Javier Seoane, 31/07/08 [addenda 06/08/08] Curso: 2006-2007 Grupo: 31 (maanas), segundo cuatrimestre (ecologa pueda redactar un informe en poco tiempo). NOTA: El informe correspondiente al curso 2006-2007 (mi

  7. RECORRIDOS PARA VISITAS ALUMNOS BACHILLERATO INSTITUTO DE CIENCIA DE MATERIALES DE MADRID. CSIC

    E-print Network

    RECORRIDOS PARA VISITAS ALUMNOS BACHILLERATO INSTITUTO DE CIENCIA DE MATERIALES DE MADRID. CSIC C/ Sor Juana Ins de la Cruz 3 Cantoblanco, Madrid (CAMPUS DE LA UAM) http ciencia a la tecnologa, desde el laboratorio a tu casa Primero viene la ciencia bsica y los

  8. 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

  9. 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.

  10. Uma Interface Hbrida para Desktop Integrando Realidade Virtual, Realidade Aumentada e 2D WIMP

    E-print Network

    Barbosa, Alberto

    Uma Interface Hbrida para Desktop Integrando Realidade Virtual, Realidade Aumentada e 2D WIMP interfaces in a common desktop setup. In addition, it is proposed the integration of a 2D WIMP (Windows with the mouse in the WIMP environment and in making data transferences, such as text, audio or video files

  11. Movement and equipositioning of plasmids by ParA filament disassembly

    E-print Network

    Higgins, Darren

    Movement and equipositioning of plasmids by ParA filament disassembly Simon Ringgaarda,b , Jeroen, and approved September 25, 2009 (received for review July 27, 2009) Bacterial plasmids encode partitioning (par) loci that confer stable plasmid inheritance. We showed previously that, in the presence of ParB and par

  12. Al tratamiento del agua potable para mejo-rar su sanidad o calidad bacteriolgica se

    E-print Network

    cloracin por choque de los pozos de agua privados estn sealados en la publi- cacin nmero L-5441S de la Mark L. McFarland, Profesor Asociado y Especialista en Fertilidad de Suelos El Sistema Universitario departamento de salud de su condado para encontrar un laboratorio autor-

  13. Da necessidade de princpios de Arquitetura da Informao para a Internet das Coisas

    E-print Network

    Floeter, Sergio Ricardo

    principles to the Internet of Things This article analyzes Internet of Things (IoT) scenario and its impacts Architecture; Internet of Things; Information ecosystems. Recebido em 09.03.2015 Aceito em 06.05.2015 1Da necessidade de princpios de Arquitetura da Informao para a Internet das Coisas Flavia Lacerda

  14. Colaborao em Ambientes Heterogneos de Realidade Virtual para Aplicaes de Treinamento

    E-print Network

    Barbosa, Alberto

    , Experimentation, Human Factors. Keywords Collaboration, Immersive Environments, CAVE, Virtual Reality, HumanColaborao em Ambientes Heterogneos de Realidade Virtual para Aplicaes de Treinamento Eduardo R@inf.puc-rio.br ABSTRACT Over the years, many studies have explored the potential of virtual reality technologies

  15. The Combined Ortho / Para Hydrogen Assignments in H_2 Metal Chlorides

    NASA Astrophysics Data System (ADS)

    Obenchain, Daniel A.; Grubbs, G. S., II; Frank, Derek S.; Pickett, Herbert M.; Novick, Stewart E.

    2014-06-01

    The rotational spectra of H_2-AgCl and H_2-AuCl have been measured using a cavity FTMW spectrometer equipped with a laser ablation source. A combination of isotopic substitution, including HD and D_2 substitutions, and the spin-spin interaction of ortho hydrogen were used to determine the structures of these species. Trends in these structures and the strengths of the H_2 interaction will be discussed. Previous work with hydrogen containing complexes have shown that separate spectra are observed for the both the ortho and para hydrogen species. In this work, ortho and para hydrogen are assigned together. The a-axis in the present species is coincident with internal rotation axis of hydrogen. This symmetry, along with a covalent interaction of the H_2 with the metal chlorides, allows for a straightforward global assignment of the ortho and para species. The differences in the present study from the previous works will be discussed, as well as the assignment of the combined ortho and para fits. Y. Zhenhong, K. J. Higgins, W. Klemperer, M. C. McCarthy and P. Thaddeus, J. Chem. Phys., 123(2005) 221106. J. M. Michaug, W. C. Topic, W. Jger, J. Phys. Chem. A., 115(2011) 9456 M. Ishiguro, K Harada, K. Tanaka, Y. Sumiyoshi, Y. Endo, Chem. Phys. Lett., 554(2012) 33.

  16. Uso de Design Probes no Design de Tecnologias para Terapeutas de Crianas com Autismo

    E-print Network

    Barbosa, Alberto

    oferecem meios de personalização para atender às necessidades de cada indivíduo. Neste artigo, discutimos características e manifestações relacionadas ao TEA, assim como diversos tipos de respostas aos modos e meios de

  17. Movement and equipositioning of plasmids by ParA filament disassembly

    E-print Network

    Ringgaard, Simon

    Bacterial plasmids encode partitioning (par) loci that confer stable plasmid inheritance. We showed previously that, in the presence of ParB and parC encoded by the par2 locus of plasmid pB171, ParA formed cytoskeletal-like ...

  18. EFRIGERATION OF FISH -PART 4 PRE PARA TION, FRE EZI NG,

    E-print Network

    EFRIGERATION OF FISH - PART 4 PRE PARA TION, FRE EZI NG, AND COLD STORAGE OF FISH, SHELLFISH, AND PRECOOKED FISHERY PRODUCTS UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary FISH, Douglas McKay, Secretary Fish and Wildlife Service, John L. Farley, Director Fishery Leaflet 430

  19. SEGURO DE ACCIDENTES Y RESPONSABILIDAD CIVIL PARA ALUMNOS DE LA UNIVERSIDAD DE MURCIA

    E-print Network

    Acacio, Manuel

    100.000 *Desplazamiento de un familiar por hospitalizacin superior a 5 das en el extranjero Hasta 1.500 grado, para alumnos desplazados en el extranjero Hasta 1.500 Gastos por prdida de clases por accidente, ms de 90 das, en Espaa 1.500 Infortunio familiar por accidente de circulacin del padre o la madre

  20. Arquitectura del Sistema de Gestin del ancho de Banda y Proteccin (SGBP) para entornos de redes

    E-print Network

    Ortega, Eusebi Calle

    Arquitectura del Sistema de Gestin del ancho de Banda y Proteccin (SGBP) para entornos de redes}@eia.udg.es Resumen. En el presente artculo se describe la arquitectura de un sistema inte- gral de gestin del ancho 4 detalla la arquitectura propuesta del sistema. Por ltimo, se presentan las conclusiones y futuros

  1. Intact cluster and chordate-like expression of ParaHox genes in a sea star

    PubMed Central

    2013-01-01

    Background The ParaHox genes are thought to be major players in patterning the gut of several bilaterian taxa. Though this is a fundamental role that these transcription factors play, their activities are not limited to the endoderm and extend to both ectodermal and mesodermal tissues. Three genes compose the ParaHox group: Gsx, Xlox and Cdx. In some taxa (mostly chordates but to some degree also in protostomes) the three genes are arranged into a genomic cluster, in a similar fashion to what has been shown for the better-known Hox genes. Sea urchins possess the full complement of ParaHox genes but they are all dispersed throughout the genome, an arrangement that, perhaps, represented the primitive condition for all echinoderms. In order to understand the evolutionary history of this group of genes we cloned and characterized all ParaHox genes, studied their expression patterns and identified their genomic loci in a member of an earlier branching group of echinoderms, the asteroid Patiria miniata. Results We identified the three ParaHox orthologs in the genome of P. miniata. While one of them, PmGsx is provided as maternal message, with no zygotic activation afterwards, the other two, PmLox and PmCdx are expressed during embryogenesis, within restricted domains of both endoderm and ectoderm. Screening of a Patiria bacterial artificial chromosome (BAC) library led to the identification of a clone containing the three genes. The transcriptional directions of PmGsx and PmLox are opposed to that of the PmCdx gene within the cluster. Conclusions The identification of P. miniata ParaHox genes has revealed the fact that these genes are clustered in the genome, in contrast to what has been reported for echinoids. Since the presence of an intact cluster, or at least a partial cluster, has been reported in chordates and polychaetes respectively, it becomes clear that within echinoderms, sea urchins have modified the original bilaterian arrangement. Moreover, the sea star ParaHox domains of expression show chordate-like features not found in the sea urchin, confirming that the dynamics of gene expression for the respective genes and their putative regulatory interactions have clearly changed over evolutionary time within the echinoid lineage. PMID:23803323

  2. 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)

  3. Strong electron donation induced differential nonradiative decay pathways for para and meta GFP chromophore analogues.

    PubMed

    Chatterjee, Tanmay; Mandal, Mrinal; Gude, Venkatesh; Bag, Partha Pratim; Mandal, Prasun K

    2015-08-28

    Z-E Isomerisation because of rotation around the exocyclic double bond (known as the ?-twist) and not any other internal conversion has been reported to be the major nonradiative decay channel for non-hydroxylic unconstrained para and meta GFP chromophore analogues. The equation ?f + 2?ZE = 1 has been shown to hold well for both para and meta GFP chromophore analogues. If the above equation holds true, then upon reducing the extent of Z-E isomerisation (?ZE), the fluorescence quantum yield (?f) should increase. To probe the above proposition two sets of non-hydroxylic unconstrained para and meta GFP chromophore analogues were synthesized. Quite interestingly by introducing the strongly electron donating -NEt2 group to the benzenic moiety these para and meta GFP chromophore analogues were shown to exhibit differential optical behaviour w.r.t. the extent of the solvatochromic shift, ?f, ?ZE, and ?f. For the first time it has been shown that the well accepted equation ?f + 2?ZE = 1 does not hold at all for these non-hydroxylic unconstrained meta analogues. Although ?ZE has been shown to be <10%, ?f is much lower than the expected near unity value for these meta analogues. After detailed investigation into the nonradiative excited state decay channel, contrary to literature reports, energy gap law governed internal conversion and not Z-E isomerisation was shown to be the major nonradiative decay channel for these meta analogues. Two models are put forward to understand the differential optical behaviour of these para and meta GFP chromophore analogues. Support from X-ray crystal structures, NMR experiments, and computational calculations has also been provided. PMID:26176350

  4. 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

  5. Realizar una bandeja de Cemento para el Molde de compresin del centro de un Shape&roll pie protsico.

    E-print Network

    Chisholm, Rex L.

    Realizar una bandeja de Cemento para el Molde de compresin del centro de un Shape&roll pie the text. Superficie superior del molde (entre bordes) Bandeja de cemento. Arriba se muestra un molde de bandeja de cemento. El manual titulado "Bandeja de cemento para la parte superior del Molde de compresin

  6. O recurso a veculos areos tripulados remotamente para realizar vrias tarefas, da investigao cientfica ao controlo de fronteiras,

    E-print Network

    Instituto de Sistemas e Robotica

    TECNOLOGIA DRONES PARA TODO O SERVIO O recurso a veculos areos tripulados remotamente para privacidade aumentam TEXTOS DE ALEXANDRA SIMES DE ABREU FOTOGRAFIAS DE NUNO BOTELHO UAV, VANT, RPA, drones falar mais dos drones (zanges em portu- gus), nomeadamente com fins mi- litares -- podem realizar

  7. DOKBOT: UM AVATAR SEMI-AUT^ONOMO PARA APLICAC~OES TELE IMERSIVAS Kayran G. R. S. Domingos

    E-print Network

    Chaimowicz, Luiz

    DOKBOT: UM AVATAR SEMI-AUT^ONOMO PARA APLICAC~OES TELE IMERSIVAS Kayran G. R. S. Domingos , Ot avatar. O sistema desenvolvido e semi-aut^onomo e e tele-operado por um usuario remotamente localizado. Para melhor percepc~ao do ambiente remoto, o avatar envia ao usuario audio e video streams

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

    E-print Network

    Barbosa, Marcia C. B.

    Mrcia Barbosa posa com seu prmio, o L'Oral-Unesco para Mulheres na Cincia. (Foto: Divulgao) Mrcia Barbosa posa com seu prmio, o L'Oral-Unesco para Mulheres na Cincia. (Foto: Divulgao) Mrcia. (Foto: Reproduo) Mrcia Barbosa tem estudo de sucesso sobre molcula de gua e DNA. (Foto: Reproduo

  9. Convertendo um Documento do Word (doc/docx) para Se voc possuir Microsoft Office Word 2007 ou 2010

    E-print Network

    Paraná, Universidade Federal do

    Convertendo um Documento do Word (doc/docx) para PDF. Se você possuir Microsoft Office Word 2007 ou arquivo já estará pronto para ser utilizado. Se você possuir Microsoft Office Word 97 ou 2003: Primeiro 2010: Crie ou abra um Documento qualquer de Word, vá no menu e clique em "salvar como" (se preferir

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

    EPA Science Inventory

    The paper reports results of dynamic and static chamber tests to evaluate para-dichlorobenzene emission rates from mothcakes. he data were analyzed by a model that assumes that the para-dichlorobenzene emission from mothcakes is a temperature-sensitive sublimation process. ull-sc...

  11. 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 ...

  12. Sitios webs: plantilla normalizada para la descripcin de registros en Digital.CSIC Oficina Tcnica Digital.CSIC

    E-print Network

    1 Sitios webs: plantilla normalizada para la descripcin de registros en Digital.CSIC Oficina Tcnica Digital.CSIC 25/11/2014 Esta plantilla es un prototipo de descripcin de recursos siguiendo el encuentra en la "Gua para depositar trabajos en Digital.CSIC" y el "Manual de edicin de registros

  13. Este catlogo contm informaes gerais do Curso de Bacharelado em Meteorologia, apresentando a grade curricular para 2015, descrio

    E-print Network

    Neto, Gasto Bierrenbach Lima

    #12;1 PREFCIO Este catlogo contm informaes gerais do Curso de Bacharelado em Meteorologia procedimentos e decises que devem tomar a cada etapa do curso Para outros esclarecimentos no contidos aqui.................................................................................................. 74 Descrio das disciplinas obrigatrias oferecidas para outras Unidades 78 - Curso de Licenciatura

  14. Este catlogo contm informaes gerais do Curso de Bacharelado em Geofsica, apresentando a grade curricular para 2015,

    E-print Network

    Neto, Gasto Bierrenbach Lima

    #12;1 PREFCIO Este catlogo contm informaes gerais do Curso de Bacharelado em Geofsica aos procedimentos e decises que devem tomar a cada etapa do curso. Para outros esclarecimentos no.................................................................................. 69 Disciplinas do Departamento de Geofsica Obrigatrias oferecidas para cursos de outras Unidades

  15. Bacillus subtilis Soj (ParA): The involvement of DNA binding and dynamic localization in plasmid partitioning

    E-print Network

    Hester, Christina Marie

    2008-05-08

    The ParA family of ATPases encompasses proteins with a wide variety of functions. The prototype of this family is the ParA ATPase from the P1 prophage plasmid, which, along with ParB and the parS binding site, is required for the faithful...

  16. Siemens equipa carro portugus para o Formula O veculo desenvolvido pelos alunos do Instituto Superior Tcnico (IST)

    E-print Network

    Instituto de Sistemas e Robotica

    Siemens equipa carro portugus para o Formula Student O veculo desenvolvido pelos alunos do Siemens, um em cada roda traseira. Os motores so SIMOTICS M do tipo 1FE1, ideais para veculos que propulso utilizada com o chassis monocoque, Data: Ttulo: Pub: Tipo: Seco: 19-07-2013 Siemens equipa

  17. Entornos Operativos para la Gestin de Recursos...Dept. d'Arquitectura de Computadors Execution Environments for

    E-print Network

    Corbalan, Julita

    Entornos Operativos para la Gestin de Recursos...Dept. d'Arquitectura de Computadors UPC Execution Environments for Parallel Applications Master CANS 2007/2008 Departament d'Arquitectura de Computadors Universitat Politcnica de Catalunya #12;Dept. d'Arquitectura de Computadors Entornos Operativos para la

  18. MANIFIESTO 8 de MARZO de 2012 Las Red de Unidades de Igualdad de Gnero para la Excelencia Universitaria

    E-print Network

    Fernndez Pascual, Ricardo

    MANIFIESTO 8 de MARZO de 2012 Las Red de Unidades de Igualdad de Gnero para la Excelencia igualdad real de mujeres y hombres pueden alcanzar la calidad y la excelencia acadmica. Para conseguir diciembre, de Universidades, todas las universidades cuenten entre sus estructuras con unidades de igualdad

  19. MANIFIESTO 8 de MARZO de 2014 La Red de Unidades de Igualdad de Gnero para la Excelencia Universitaria

    E-print Network

    Fernndez Pascual, Ricardo

    1 MANIFIESTO 8 de MARZO de 2014 La Red de Unidades de Igualdad de Gnero para la Excelencia universidades espaolas, las unidades de igualdad de gnero de nuestras universidades no estn dotadas de para alcanzar la plena igualdad de gnero en el mbito universitario. #12;2 Por todo ello, en torno

  20. Relacin masa-radio para estrellas enanas blancas y la interpretacin de recientes mediciones hechas por Hipparcos

    NASA Astrophysics Data System (ADS)

    Panei, J. A.; Althaus, L. G.; Benvenuto, O. G.

    Recientes mediciones de la masa y el radio hechas por Hipparcos de las estrellas enanas blancas 40 Eri B y Procyon B (Shipman, H. & Provencal, J. - ApJ. 1998, 494, 759), sugieren un ncleo compuesto de hierro para dichas estrellas, en lugar de carbono y oxgeno como predice la teora standard de evolucin estelar. Para interpretar estas observaciones, presentamos aqu, relaciones masa-radio para configuraciones degeneradas a temperatura finita para distintas composiciones qumicas centrales. Para tal fin hemos calculado secuencias evolutivas de enanas blancas utilizando el cdigo de evolucin estelar, desarrollado en el Observatorio de La Plata. Dicho cdigo resuelve las ecuaciones de estructura y evolucin estelar mediante la tcnica de relajacin de Henyey, y esta basado en una descripcin fsica muy detallada y actualizada.

  1. 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

  2. EL PROGRAMA CITI: UNA ALTERNATIVA PARA LA CAPACITACIN EN TICA DE LA INVESTIGACIN EN AMRICA LATINA

    PubMed Central

    Litewka, Sergio; Goodman, Kenneth; Braunschweiger, y Paul

    2011-01-01

    El Programa CITI (Collaborative Institutional Training Initiative) es un curso basado en Internet y desarrollado por voluntarios, que brinda material educacional sobre proteccin de sujetos humanos en investigaciones biomdicas y de conducta, buenas prcticas clnicas, conducta responsable de la investigacin y trato humanitario a animales de laboratorio. Es un esfuerzo conjunto del Fred Hutchinson Cancer Research Center y la Universidad de Miami. Con la colaboracin de expertos locales, gran parte del contenido se ha adaptado para Amrica Latina, se ha traducido al espaol y portugus y se han establecido acuerdos de colaboracin con instituciones especializadas en biotica en Chile, Brasil, Costa Rica y Per. Los autores presentan una metodologa accesible para la capacitacin en tica de la investigacin y una justificacin de su uso y difusin en Amrica Latina PMID:21687817

  3. Incentivos para atraer y retener personal de salud de zonas rurales del Per: un estudio cualitativo

    PubMed Central

    Huicho, Luis; Canseco, Francisco Dez; Lema, Claudia; Miranda, J. Jaime; Lescano, Andrs G.

    2014-01-01

    El objetivo fue identificar incentivos de atraccin y retencin en zonas rurales y distantes de Ayacucho, Per. Fueron realizadas entrevistas en profundidad con 80 mdicos, enfermeras, obstetras y tcnicos (20 por grupo) de las zonas ms pobres y con 11 funcionarios. No existen polticas sistemticas de atraccin y retencin de personal de salud en Ayacucho. Los principales incentivos, en orden de importancia, fueron mejoras salariales, oportunidades de formacin y capacitacin, estabilidad laboral y nombramiento, mejoras en infraestructura y equipos, e incremento del personal. Se mencionaron tambin mejoras en la vivienda y alimentacin, mayor cercana 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 disear polticas pblicas. Las iniciativas del Estado deben comprender procesos rigurosos de monitoreo y evaluacin, para asegurar que las mismas tengan el impacto deseado. PMID:22488318

  4. Control of Photoluminescence of Carbon Nanodots via Surface Functionalization using Para-substituted Anilines

    PubMed Central

    Kwon, Woosung; Do, Sungan; Kim, Ji-Hee; Seok Jeong, Mun; Rhee, Shi-Woo

    2015-01-01

    Carbon nanodots (C-dots) are a kind of fluorescent carbon nanomaterials, composed of polyaromatic carbon domains surrounded by amorphous carbon frames, and have attracted a great deal of attention because of their interesting properties. There are still, however, challenges ahead such as blue-biased photoluminescence, spectral broadness, undefined energy gaps and etc. In this report, we chemically modify the surface of C-dots with a series of para-substituted anilines to control their photoluminescence. Our surface functionalization endows our C-dots with new energy levels, exhibiting long-wavelength (up to 650?nm) photoluminescence of very narrow spectral widths. The roles of para-substituted anilines and their substituents in developing such energy levels are thoroughly studied by using transient absorption spectroscopy. We finally demonstrate light-emitting devices exploiting our C-dots as a phosphor, converting UV light to a variety of colors with internal quantum yields of ca. 20%. PMID:26218869

  5. Control of Photoluminescence of Carbon Nanodots via Surface Functionalization using Para-substituted Anilines

    NASA Astrophysics Data System (ADS)

    Kwon, Woosung; Do, Sungan; Kim, Ji-Hee; Seok Jeong, Mun; Rhee, Shi-Woo

    2015-07-01

    Carbon nanodots (C-dots) are a kind of fluorescent carbon nanomaterials, composed of polyaromatic carbon domains surrounded by amorphous carbon frames, and have attracted a great deal of attention because of their interesting properties. There are still, however, challenges ahead such as blue-biased photoluminescence, spectral broadness, undefined energy gaps and etc. In this report, we chemically modify the surface of C-dots with a series of para-substituted anilines to control their photoluminescence. Our surface functionalization endows our C-dots with new energy levels, exhibiting long-wavelength (up to 650?nm) photoluminescence of very narrow spectral widths. The roles of para-substituted anilines and their substituents in developing such energy levels are thoroughly studied by using transient absorption spectroscopy. We finally demonstrate light-emitting devices exploiting our C-dots as a phosphor, converting UV light to a variety of colors with internal quantum yields of ca. 20%.

  6. Development of an integrated remote monitoring technique and its application to para-stressing bridge system

    NASA Astrophysics Data System (ADS)

    Miyamoto, Ayaho; Motoshita, Minoru; Casas, Joan R.

    2013-12-01

    Bridge monitoring system via information technology is capable of providing more accurate knowledge of bridge performance characteristics than traditional strategies. This paper describes not only an integrated Internet monitoring system that consists of a stand-alone monitoring system (SMS) and a Web-based Internet monitoring system (IMS) for bridge maintenance but also its application to para-stressing bridge system as an intelligent structure. IMS, as a Web-based system, is capable of addressing the remote monitoring by introducing measuring information derived from SMS into the system through Internet or intranet connected by either PHS or LAN. Moreover, the key functions of IMS such as data management system, condition assessment, and decision making with the proposed system are also introduced in this paper. Another goal of this study is to establish the framework of a para-stressing bridge system which is an intelligent bridge by integrating the bridge monitoring information into the system to control the bridge performance automatically.

  7. Molecular Characterization of Neurally Expressing Genes in the Para Sodium Channel Gene Cluster of Drosophila

    PubMed Central

    Hong, C. S.; Ganetzky, B.

    1996-01-01

    To elucidate the mechanisms regulating expression of para, which encodes the major class of sodium channels in the Drosophila nervous system, we have tried to locate upstream cis-acting regulatory elements by mapping the transcriptional start site and analyzing the region immediately upstream of para in region 14D of the polytene chromosomes. From these studies, we have discovered that the region contains a cluster of neurally expressing genes. Here we report the molecular characterization of the genomic organization of the 14D region and the genes within this region, which are: calnexin (Cnx), actin related protein 14D (Arp14D), calcineurin A 14D (CnnA14D), and chromosome associated protein (Cap). The tight clustering of these genes, their neuronal expression patterns, and their potential functions related to expression, modulation, or regulation of sodium channels raise the possibility that these genes represent a functionally related group sharing some coordinate regulatory mechanism. PMID:8849894

  8. Modelizacion, control e implementacion de un procesador energetico paralelo para aplicacion en sistemas multisalida

    NASA Astrophysics Data System (ADS)

    Ferreres Sabater, Agustin

    Cualquier sistema electronico que incluya un procesado o tratamiento de la senal, y ademas, algun tipo de actuador mecanico generalmente necesita, como minimo, dos tensiones diferentes de alimentacion. Excluyendo los sistemas de alimentacion distribuida, la solucion tecnica mas utilizada para proporcionar dos o mas tensiones consiste en las fuentes de alimentacion multisalida. En una fuente de alimentacion multisalida los diferentes circuitos que conforman cada salida comparten un mismo transformador de potencia optimizando coste, masa, y volumen. Las ventajas obtenidas con este procedimiento tienen en su contra el efecto que sobre cada salida individual provocan las demas en su conjunto debido, principalmente, a los efectos de los elementos parasitos de los componentes. Un cambio de carga en una de las salidas produce un transitorio que es visto por todas las demas como un efecto de impedancia cruzada, y al final del transitorio, la tension de cada salida es diferente respecto a la que tenian antes del transitorio. Este ultimo resultado se conoce como regulacion cruzada. La disminucion de los efectos de la regulacion cruzada ha sido objeto de estudio durante los ultimos anos. El objetivo ha sido el desarrollo de distintas estrategias que permiten, desde disminuir los efectos de la regulacion cruzada hasta los niveles deseables, a eliminarla completamente. El resultado final suele suponer una penalizacion sobre el diseno del sistema directamente proporcional al grado de regulacion a conseguir en las distintas salidas. Entre las soluciones propuestas para eliminar la regulacion cruzada las tecnicas de post-regulacion se han consolidado como la opcion mas aceptada ya que, pueden aplicarse a cualquier convertidor y no suponen ninguna complejidad adicional a la hora de plantear el diseno. En esta Tesis Doctoral se abordara el estudio de la tecnica conocida como postregulacion mediante transformador controlado, que si bien se ha empleado en convertidores resonantes, su modelizacion, y aplicacion en convertidores PWM, esta aun por estudiar y valorar. El primer Capitulo consiste en una breve introduccion al problema de la regulacion cruzada y la impedancia cruzada para posteriormente describir las tecnicas de post-regulacion actualmente mas empleadas, con especial atencion al post-regulador con transformador controlado. El Capitulo segundo trata del estudio de las caracteristicas estaticas del postregulador con transformador controlado. Partiendo de los estudios disponibles sobre el postregulador se plantean mejoras en su modo de actuacion y se discuten tres alternativas diferentes para controlar el transformador. Las dos primeras consisten en emplear un convertidor auxiliar Boost en sus dos modos de funcionamiento, continuo y discontinuo. La tercera consiste en controlar el transformador con una tension PWM directamente, sin filtrado. Finalmente se comprueba experimentalmente, para el estado estacionario, el funcionamiento del post-regulador para cada uno de los tres metodos de control. El Capitulo tercero trata de la dinamica de la salida controlada con el post-regulador cuando este emplea un convertidor auxiliar tipo Boost. Mediante la tecnica de promediado de variables de estado se propone el modelo de pequena senal, tanto para el modo continuo como para el modo discontinuo de funcionamiento del convertidor auxiliar. Los resultados mas significativos de esta seccion son las expresiones analiticas de las impedancias cruzadas y de la impedancia de la salida post-regulada. Como complemento al modelo de pequena senal se plantea un modelo de gran senal implementado sobre el simulador Pspice. Con este nuevo modelo se reproducen los resultados obtenidos con el modelo de pequena senal y ademas es posible simular los transitorios en las tensiones de salida ante cambios de carga. La modelizacion del convertidor cuando el transformador se controla con una tension PWM sin filtrar es el objetivo del Capitulo 4. En las secciones siguientes del Capitulo se plantea el correspondiente modelo de gran senal aplicado a un nuevo prototipo exper

  9. Repeated Topical Application of para-Phenylenediamine Induces Renal Histopathological Changes in Rats

    PubMed Central

    Bharali, Manuj Kr.; Basumatary, Rajeev; Rahman, Taibur; Dutta, Karabi

    2012-01-01

    Hemolytic anemia and rhabdomyolysis have been often reported to be an adverse effect of drug- and chemical-induced toxicity both in experimental and real-life scenario. para-Phenylenediamine (PPD) is a derivative of para-nitroaniline and has been found as an ingredient of almost all hair dye formulations in varying concentrations from 2% to 4% w/v. Earlier studies have reported that the accidental oral ingestion of PPD in humans can lead to acute renal failure because of rhabdomyolysis. In the present investigation, we have tested the chronic topical application of PPD and its effect on the renal histology of Sprague-Dawley rats. The experiment provides clear evidence that topically applied PPD induces hemolytic anemia as evident from the decrease in the total RBC count, packed cell volume, and hemoglobin content apart from rhabdomyolysis which subsequently causes acute renal failure in rats. PMID:22778510

  10. Iodine(III)-Mediated para-Selective Direct Imidation of Anilides.

    PubMed

    Pialat, Amlie; Bergs, Julien; Sabourin, Axel; Vinck, Robin; Ligault, Benot; 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

  11. 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.

  12. Synthesis of icariin from kaempferol through regioselective methylation and para-ClaisenCope rearrangement

    PubMed Central

    Mei, Qinggang; Wang, Chun; Zhao, Zhigang; Yuan, Weicheng

    2015-01-01

    Summary The hemisynthesis of the naturally occurring bioactive flavonoid glycoside icariin (1) has been accomplished in eleven steps with 7% overall yield from kaempferol. The 4?-OH methylation of kaempferol, the 8-prenylation of 3-O-methoxymethyl-4?-O-methyl-5-O-prenyl-7-O-benzylkaempferol (8) via para-ClaisenCope rearrangement catalyzed by Eu(fod)3 in the presence of NaHCO3, and the glycosylation of icaritin (3) are the key steps. PMID:26425179

  13. El Centro de Expresin Teatral: Un espacio para vivir el teatro

    E-print Network

    Nú ñ ez, Agustí n

    1995-04-01

    lugar recuper a ese ser sensible que durante mucho tiempo estuvo escondido dentro de m. No slo fue mi escuela de formacin actoral; fue tambin mi hogar y el nostlgico comienzo de este viaje palpitante por los caminos del teatro." Testimonio de... bsica, se dictaban cursos y talleres complementarios, surgidos en la mayora de los casos por necesidades de los alumnos (tcnica de la voz, perfil sicolgico del personaje, escenografa, danza para actores, maquillaje artstico, historia del teatro y...

  14. Parallel Visualization and Analysis with ParaView on a Cray XT4

    SciTech Connect

    Patchett, John; Ahrens, James; Ahern, Sean; Pugmire, Dave

    2009-01-01

    Scienti c data sets produced by modern supercomputers like ORNL s Cray XT 4, Jaguar, can be extremely large, making visualization and analysis more di cult as moving large resultant data to dedicated analysis systems can be pro- hibitively expensive. We share our continuing work of integrating a parallel visu- alization system, ParaView, on ORNL s Jaguar system and our e orts to enable extreme scale interactive data visualization and analysis. We will discuss porting challenges and present performance numbers.

  15. Projeto do sistema anti-ressonante da fiao 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 est sendo projetado e construdo pelo grupo Grviton. Sua construo est ocorrendo no Laboratrio de Estado Slido e Baixas Temperaturas (LESBT) da Universidade de So Paulo, na cidade de So Paulo. Esse detector possui uma massa ressonante esfrica de cobre-alumnio, com 65 cm de dimetro, pesando aproximadamente 1150 Kg, suspensa por um sistema de isolamento vibracional, que se encontra em fase de testes preliminares. A real eficcia desse sistema, entretanto, s poder ser comprovada quando o detector estiver aparelhado com, pelo menos, um transdutor eletromecnico de altssima sensibilidade acoplado massa ressonante. Neste momento, no s este sistema de isolamento vibracional ser posto em teste, como o do projeto da fiao que transporta os sinais de microondas at os transdutores e destes para a pr-amplificao. Apesar dessa fiao ter sido projetada para no apresentar nenhum contato com a superfcie esfrica da antena, de maneira a no haver nenhuma transmisso de rudo vibracional do laboratrio para esta, deve-se minimizar o rudo microfnico produzido nessa fiao por oscilaes mecnicas, uma vez que ela no 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 no ter nenhuma ressonncia mecnica na faixa de freqncias de interesse para deteco (3000 - 3400 Hz). Desta forma, as vibraes nessa faixa no sero amplificadas. O projeto foi feito usando iterativamente, de maneira a otimizar os resultados obtidos, o programa de elementos finitos Msc/Nastran. Atravs de simulaes feitas neste programa, determinamos os parmetros geomtricos ideais a serem utilizados, os quais proporcionam a maior regio espectral de interesse livre de ressonncias.

  16. JAVARRAY UM ARRAY RECONFIGURVEL PARA REDUO DE CONSUMO DE ENERGIA EM ARQUITETURAS JAVA

    E-print Network

    Wagner, Flávio Rech

    JAVARRAY ­ UM ARRAY RECONFIGURÁVEL PARA REDU??O DE CONSUMO DE ENERGIA EM ARQUITETURAS JAVA João energia. Com a verificação das necessidades computacionais dos trechos mais relevantes de aplicações Java economizando-se energia. Mais de 50% do código pode ser executado no JavArray, acelerando-se portanto

  17. Complexation and determination of palladium (II) ion with para-Cl-phenylazo-R-acid spectrophotometrically.

    PubMed

    Hanna, W G

    1999-11-15

    The complexation of para-Cl-phenylazo-R-acid azo dye with Pd(II) has been studied spectrophotometrically. Protonation constant (pK(a)) of the ligand has been calculated and the stability conditional constants of para-Cl-phenylazo-R-acid ligand with palladium ion has been determined at a constant temperature (25.0 degrees C), where the molar ratio of this complex is 1:1 (metal:ligand) with logbeta(1)=3.75, and 1:2 with logbeta(2)=8.55. Solid complex of para-Cl-phenylazo-R-acid has been prepared and characterized on the basis of elemental analysis and FTIR spectral data. A procedure for the spectrophotometric determination of Pd(II) using para-Cl-phenylazo-R-acid as a new azo chromophore is proposed where it is rapid, sensitive and highly specific. Beer's law was obeyed in the range 0.50-10.00 ppm at pH 5.0-6.0 to form a violet-red complex (epsilon=7.7 x 10(4) l(-1) mol(-1) cm(-1) at lambda(max)=560 nm). Metal ions such as Cu(II), Cr(III), La(III), Yb(III), Y(III), and Rh(III) interfere with the complex. Ammonium salt of trimellitic acid is used to precipitate some of the interfering ions and a scheme for separation of Pd(II) from a synthetic mixture similar in composition to platinum ore or deposit was made. PMID:18967771

  18. UTILIZAO DE UM MODELO DE CONTORNO ATIVO PARA EXTRAO DE ARESTAS EM IMAGENS

    E-print Network

    de Figueiredo, Luiz Henrique

    se deseja extrair, dessa forma a função de energia passa a funcionar como uma função objetivo de um mínima quando a Snake se encontre sobre as arestas da imagem. Dessa maneira o problema de extração de por Cohen. Dessa forma a Snake apresenta uma dinâmica interna que pode ser utilizada para "inflar" ou

  19. Paralelizacion en Multiprocesadores de Dos Metodos para el Refinamiento de la Geometria en

    E-print Network

    Fraga, Luis Gerardo de la

    de proyecciones. Para poder realizar este proceso de la reconstruccion 3D, es necesario tener laon, el metodo de recoleccion de los datos va degra- dando al especimen, limitandonos a no poder 3D por medio de la tecnica de reconstruccion basada en una geometria de inclinacion conica [4

  20. 4-Amino-12-methylsulfonyloxy-[2.2]paracyclophane

    PubMed Central

    Meng, Xiangchao; Duan, Wenzeng; Han, Yinfeng

    2014-01-01

    The title compound, C17H19NO3S, was synthesized from 4-benzhydrylideneamino-12-hydroxy-[2.2]paracyclophane and methanesulfonyl chloride. In the molecule, the distance between the centroids of two aromatic rings is 2.960?(5)?. In the crystal, weak NH?O and CH?O hydrogen bonds link the molecules into layers parallel to the ac plane. PMID:24526969

  1. Festival Report: Exito para el XVI Festival Internacional de Teatro Hispano del Teatro Avante

    E-print Network

    Marrero, Marí a Teresa

    2002-04-01

    pblico (predominantemente de origen cubano) juzgando por los comentarios compartidos durante el foro. La ciudad sitiada (estreno en Madrid, 2000) del grupo espaol Micomicn (elenco de Manuel Agredo, Yiyo Alonso, Encarna de las Heras, Nuria Meneia... breves para el Festival. La primera fue Suandende, basada en un cuento Yoruba recopilado por la reconococida etnloga cubana Lydia Cabrera en su libro Cuentos negros de Cuba, (Pars 1924, Madrid, 1972); la segunda, el tercer acto de una obra dramtica...

  2. Is MPI Suitable for a Generative Design-Pattern Paras Mehta, Jos Nelson Amaral, Duane Szafron

    E-print Network

    Szafron, Duane

    Is MPI Suitable for a Generative Design-Pattern System? Paras Mehta, José Nelson Amaral, Duane is ostensibly based on, and built upon the experience with, the successful CO2P3S system. Significant challenges that is an evolution of the Correct Object- Oriented Pattern-Based Parallel Programming System CO2P3S [12]. CO2P3S uses

  3. MTODOS MULTIGRID PARA A SIMULAO POR ELEMENTOS FINITOS DE ESCOAMENTOS IMISCVEIS EM

    E-print Network

    Coutinho, Alvaro L. G. A.

    1 M?TODOS MULTIGRID PARA A SIMULA??O POR ELEMENTOS FINITOS DE ESCOAMENTOS IMISCÍVEIS EM MEIOS pressão em escoamentos de fluidos imiscíveis em meios porosos. A equação da saturação é aproximada; Meios Porosos. #12; 2 1. INTRODU??O Nos últimos anos os métodos multigrid tem sido largamente estudados

  4. Nickel-catalysed para-CH activation of pyridine with switchable regioselective hydroheteroarylation of allylarenes.

    PubMed

    Lee, Wei-Chih; Chen, Chien-Hung; Liu, Cheng-Yuan; Yu, Ming-Shiuan; Lin, Yung-Huei; Ong, Tiow-Gan

    2015-12-14

    para-CH activation of pyridine with allylbenzene is described by Ni/Al cooperative catalysis in combination with a bulkier NHC ligand and a Lewis acid, leading to linear hydroheteroarylation products. Interestingly, the branch selectivity can be achieved by using the combination of a less sterically hindered amino-NHC ligand and AlMe3 through tandem reaction of facile alkene isomerization followed by a slow CH bond activation process. PMID:26451893

  5. Repaso de matrices, determinantes y sistemas de ecuaciones lineales

    E-print Network

    Hurtado, Ana

    ciento de nitr´ogeno, un 21 por ciento de ox´igeno y un 1 por ciento de arg´on. Para poder realizar un forma de rect´angulo, que usualmente se delimitan por medio de par´entesis. Si una matriz tiene n filas

  6. Sistemas de ecuaciones lineales Comenzamos este primer tema con un problema de motivacion.

    E-print Network

    Hurtado, Ana

    de ox´igeno y un 1 por ciento de arg´on. Para poder realizar un experimento en el planeta Marte se forma de rect´angulo, que usualmente se delimitan por medio de par´entesis. Si una matriz tiene n filas

  7. Comparao de modelos para o clculo de perturbaes orbitais devidas mar terrestre

    NASA Astrophysics Data System (ADS)

    Vieira Pinto, J.; Vilhena de Moraes, R.

    2003-08-01

    Aplicaes recentes de satlites artificiais com finalidades geodinmicas requerem rbitas determinadas com bastante preciso. Em particular mars terrestres influenciam o potencial terrestre causando perturbaes adicionais no movimento de satlites artificiais, as quais tem sido medidas por diversos processos. A atrao exercida pela lua e pelo sol sobre a terra produz deslocamentos elsticos em seu interior e uma protuberncia em sua superfcie. O resultado uma pequena variao na distribuio da massa na terra, consequentemente no geopotencial. As perturbaes nos elementos orbitais de satlites artificiais terrestres devidas a mar terrestre podem ser estudadas a partir das equaes de Lagrange, considerando-se um conveniente potencial. Por outro lado, como tem sido feito pelo IERS, as mudanas induzidas pela mar terrestre no geopotencial podem ser convenientemente modeladas como variaes nos coeficientes Cnm e Snm do geopotencial. As duas teorias ainda no foram comparados para um mesmo satlite. Neste trabalho so apresentadas e comparadas as variaes de longo perodo e seculares nas perturbaes orbitais devidas mar terrestre, calculadas por um modelo simples, o de Kozai, e pelo modelo do IERS. Resultados preliminares mostram, para os satlites SCD2 e CBERS1, e para a Lua em movimento elptico e precessionando, as perturbaes seculares no argumento do perigeu e na longitude do nodo ascendente.

  8. Atlas de aves: Un metodo para documentar distribucion y seguir poblaciones

    USGS Publications Warehouse

    Robbins, C.S.; Dowell, B.A.; Dawson, D.K.

    1988-01-01

    Los Atlas de Aves son proyectos nacionales o regionalies para trazar en mapas la distribucion en reproduccion de cada especie de ave. Ese procedimiento se esta usando en Europa, Australia, Nueva Zelanda, Norteamerica, y partes de Africa. El tama?o de los cuadrados varia de medio grado de latitud y Iongitud hasta 5 x 5 km. El trabajo de campo de cada proyecto exige aproxlmadamente cinco a?os, pero los aficionados pueden llevar a cabo la mayor parte del trabajo. Es posible almacenar los resultados en un computador personal. Hay muchos beneficios: (I) se presenta la distribucion corriente de las aves de la nacion, del estado, o de la Iocalidad; (2) se desarrolla nueva informacion especialmente sobre especies raras o en peligro; (3) se descubren areas que tienen una avlfauna sobresaliente o habitats raros y ayuda a su proteccion, (4) se documentan cambios de dlstribucion; (5) se pueden usar para documentar cambios de poblacion, especialmente en los tropicos donde otros metodos son mas dificiles de usar porque hay muchas especies y no hay muchos observadores calificados en la identificacion de sonidos de las aves; (6) son proyectos buenos de investigacion para estudiantes graduados; (7) los turistas y los jefes de excursiones de historia natural pueden contribuir con muchas informaciones

  9. The ortho:para-H_2 ratio in C- and J-type shocks

    NASA Astrophysics Data System (ADS)

    Wilgenbus, D.; Cabrit, S.; Pineau des Forts, 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

  10. Fragrance material review on 1-(para-menthen-6-yl)-1-propanone.

    PubMed

    Scognamiglio, J; Letizia, C S; Api, A M

    2013-12-01

    A toxicologic and dermatologic review of 1-(para-Menthen-6-yl)-1-propanone when used as a fragrance ingredient is presented. 1-(para-Menthen-6-yl)-1-propanone is a member of the fragrance structural group Alkyl Cyclic Ketones. These fragrances can be described as being composed of an alkyl, R1, and various substituted and bicyclic saturated or unsaturated cyclic hydrocarbons, R2, in which one of the rings may include up to 12 carbons. Alternatively, R2 may be a carbon bridge of C2-C4 carbon chain length between the ketone and cyclic hydrocarbon. This review contains a detailed summary of all available toxicology and dermatology papers that are related to this individual fragrance ingredient and is not intended as a stand-alone document. Available data for 1-(para-Menthen-6-yl)-1-propanone were evaluated then summarized and includes physical properties, acute toxicity, skin irritation, and skin sensitization, data. A safety assessment of the entire Alkyl Cyclic Ketones will be published simultaneously with this document; please refer to Belsito et al. (2013) [Belsito, D., Bickers, D., Bruze, M., Calow, P., Dagli, M., Fryer, A.D., Greim, H., Miyachi, Y., Saurat, J.H., Sipes, I.G., 2013 A Toxicologic and Dermatologic Assessment of Alkyl Cyclic Ketones When Used as Fragrance Ingredients. Submitted with this manuscript.] for an overall assessment of the safe use of this material and all Alkyl Cyclic Ketones in fragrances. PMID:24246181

  11. 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.

  12. Madres para la Salud: Design of a Theory-based Intervention for Postpartum Latinas

    PubMed Central

    Keller, Colleen; Records, Kathie; Ainsworth, Barbara; Belyea, Michael; Permana, Paska; Coonrod, Dean; Vega-Lpez, Sonia; Nagle-Williams, Allison

    2011-01-01

    Background Weight gain in young women suggests that childbearing may be an important contributor to the development of obesity in women. Depressive symptoms can interfere with resumption of normal activity levels following childbirth or with the initiation of or adherence to physical activity programs essential for losing pregnancy weight. Depression symptoms may function directly to promote weight gain through a physiologic mechanism. Obesity and its related insulin resistance may contribute to depressed mood physiologically. Although physical activity has well-established beneficial effects on weight management and depression, women tend to under participate in physical activity during childbearing years. Further, the mechanisms underpinning the interplay of overweight, obesity, physical activity, depression, and inflammatory processes are not clearly explained. Objectives This report describes the theoretical rationale, design considerations, and cultural relevance for Madres para la Salud [Mothers for Health]. Design and Methods Madres para la Salud is a 12 month prospective, randomized controlled trial exploring the effectiveness of a culturally specific intervention using bouts of physical activity to effect changes in body fat, systemic and fat tissue inflammation, and postpartum depression symptoms in sedentary postpartum Latinas. Summary The significance and innovation of Madres para la Salud includes use of a theory-driven approach to intervention, specification and cultural relevance of a social support intervention, use of a Promotora model to incorporate cultural approaches, use of objective measures of physical activity in post partum Latinas women, and the examination of biomarkers indicative of cardiovascular risk related to physical activity behaviors in postpartum Latinas. PMID:21238614

  13. Otimizao de procedimento de manobra para induo de reentrada de um satlite retornvel

    NASA Astrophysics Data System (ADS)

    Schulz, W.; Suarez, M.

    2003-08-01

    Veculos espaciais que retornam Terra passam por regimes de velocidade e condies de vo distintos. Estas diferenas dificultam sua concepo aerodinmica e o planejamento de seu retorno. A partir de uma proposta de um veculo orbital retornvel (satlite SARA, em desenvolvimento no IAE/CTA) para realizao de experimentos cientficos e tecnolgicos em ambiente de baixa gravidade, surge a necessidade de realizarem-se estudos considerando-se os aspectos relativos sua aerodinmica. Aps o lanamento, o veculo deve permanecer em rbita pelo tempo necessrio para a conduo de experimentos, sendo depois direcionado Terra e recuperado em solo. A concepo aerodinmica de importncia para o vo em suas diversas fases e deve considerar aspectos relativos estabilizao Aerodinmica e ao arrasto atmosfrico, sendo este ltimo de importncia crucial na anlise do aquecimento a ser enfrentado. A manobra de retorno inclui consideraes sobre as condies atmosfricas e dinmica de reentrada, devendo ser calculada de forma mais precisa possvel. O trabalho proposto avalia estudos da dinmica de vo de um satlite recupervel considerando aspectos relativos determinao orbital com GPS, tcnica utilizada com sucesso na CONAE, e seu comportamento aerodinmico em vo balstico de retorno, com nfase em sua fase de reentrada atmosfrica. Busca-se otimizar a manobra de reentrada de tal forma que a utilizao do sistema GPS garanta minimizar a rea de impacto com o solo.

  14. Para-GMRF: parallel algorithm for anomaly detection of hyperspectral image

    NASA Astrophysics Data System (ADS)

    Dong, Chao; Zhao, Huijie; Li, Na; Wang, Wei

    2007-12-01

    The hyperspectral imager is capable of collecting hundreds of images corresponding to different wavelength channels for the observed area simultaneously, which make it possible to discriminate man-made objects from natural background. However, the price paid for the wealthy information is the enormous amounts of data, usually hundreds of Gigabytes per day. Turning the huge volume data into useful information and knowledge in real time is critical for geoscientists. In this paper, the proposed parallel Gaussian-Markov random field (Para-GMRF) anomaly detection algorithm is an attempt of applying parallel computing technology to solve the problem. Based on the locality of GMRF algorithm, we partition the 3-D hyperspectral image cube in spatial domain and distribute data blocks to multiple computers for concurrent detection. Meanwhile, to achieve load balance, a work pool scheduler is designed for task assignment. The Para-GMRF algorithm is organized in master-slave architecture, coded in C programming language using message passing interface (MPI) library and tested on a Beowulf cluster. Experimental results show that Para-GMRF algorithm successfully conquers the challenge and can be used in time sensitive areas, such as environmental monitoring and battlefield reconnaissance.

  15. The ortho:para ratio of H{sub 3}{sup +} in laboratory and astrophysical plasmas

    SciTech Connect

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

    2015-01-22

    The discovery of H{sub 3}{sup +} in the diffuse interstellar medium has dramatically changed our view of the cosmic-ray ionization rate in diffuse molecular clouds. However, another surprise has been that the ortho:para ratio of H{sub 3}{sup +} in these clouds is inconsistent with the temperature derived from the excitation of H{sub 2}, the dominant species in these clouds. In an effort to understand this discrepancy, we have embarked on an experimental program to measure the nuclear spin dependence of the dissociative electron recombination rate of H{sub 3}{sup +} using the CRYRING and TSR ion storage rings. We have also performed the first measurements of the reaction H{sub 3}{sup +}+H{sub 2}?H{sub 2}+H{sub 3}{sup +} below room temperature. This reaction is likely the most common bimolecular reaction in the universe, and plays an important role in interconverting ortho- and para-H{sub 3}{sup +}. Finally, we have constructed a steady-state chemical model for diffuse clouds, which takes into account the spin-dependence of the formation of H{sub 3}{sup +}, its electron recombination, and its reaction with H{sub 2}. We find that the ortho:para ratio of H{sub 3}{sup +} in diffuse clouds is likely governed by a competition between dissociative recombination and thermalization by reactive collisions.

  16. Quantum chemical and experimental study of 1,2,4-trihydroxy-para-menthane

    NASA Astrophysics Data System (ADS)

    Rottmannov, Lenka; Luke, Vladimr; Il?in, Michal; Fodran, Peter; Herich, Peter; Koek, 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 Mller-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.

  17. A sensitive and selective enzyme-linked immunosorbent assay for the analysis of Para red in foods.

    PubMed

    Wang, Jia; Wei, Keyi; Li, Hao; Li, Qing X; Li, Ji; Xu, Ting

    2012-05-01

    Para red is a synthetic dye and a potential genotoxic carcinogen. A hapten mimicking Para red structure was synthesized by introducing a carboxyl to the naphthol part of Para red and coupled to carrier protein to form an immunogen for the production of specific antibodies. A sensitive and selective enzyme-linked immunosorbent assay (ELISA) was developed for the detection of Para red in food samples. The limit of detection and inhibition half-maximum concentrations of Para red in phosphate buffered saline with 10% methanol were 0.06 and 2.2 ng mL(-1), respectively. Cross-reactivity values of the ELISA with the tested compounds including Sudan red I, II, III, IV, and G, sunset yellow, 2-naphthol, and 4-nitroaniline were ?0.2%. This assay was used to determine Para red in tomato sauce, chilli sauce, chilli powder and sausage samples after ultrasonic extraction, cleanup and concentration steps. The average recoveries, repeatability (intraday extractions and analysis), and intra-laboratory reproducibility (interday extractions and analysis) were in the range 90-108%, 4-12% and 8-17%, respectively. This assay was compared to a high-performance liquid chromatographic method for 28 samples, displaying a good correlation (R(2) = 0.95). Para red residues in 53 real world samples determined by ELISA were below the limit of detection. PMID:22439137

  18. Identification of an intact ParaHox cluster with temporal colinearity but altered spatial colinearity in the hemichordate Ptychodera flava

    PubMed Central

    2013-01-01

    Background ParaHox and Hox genes are thought to have evolved from a common ancestral ProtoHox cluster or from tandem duplication prior to the divergence of cnidarians and bilaterians. Similar to Hox clusters, chordate ParaHox genes including Gsx, Xlox, and Cdx, are clustered and their expression exhibits temporal and spatial colinearity. In non-chordate animals, however, studies on the genomic organization of ParaHox genes are limited to only a few animal taxa. Hemichordates, such as the Enteropneust acorn worms, have been used to gain insights into the origins of chordate characters. In this study, we investigated the genomic organization and expression of ParaHox genes in the indirect developing hemichordate acorn worm Ptychodera flava. Results We found that P. flava contains an intact ParaHox cluster with a similar arrangement to that of chordates. The temporal expression order of the P. flava ParaHox genes is the same as that of the chordate ParaHox genes. During embryogenesis, the spatial expression pattern of PfCdx in the posterior endoderm represents a conserved feature similar to the expression of its orthologs in other animals. On the other hand, PfXlox and PfGsx show a novel expression pattern in the blastopore. Nevertheless, during metamorphosis, PfXlox and PfCdx are expressed in the endoderm in a spatially staggered pattern similar to the situation in chordates. Conclusions Our study shows that P. flava ParaHox genes, despite forming an intact cluster, exhibit temporal colinearity but lose spatial colinearity during embryogenesis. During metamorphosis, partial spatial colinearity is retained in the transforming larva. These results strongly suggest that intact ParaHox gene clustering was retained in the deuterostome ancestor and is correlated with temporal colinearity. PMID:23802544

  19. Quantum Monte Carlo Simulation of Vibrational Frequency Shifts of CO in Solid para-HYDROGEN

    NASA Astrophysics Data System (ADS)

    Wang, Lecheng; Le Roy, Robert; Roy, Pierre-Nicholas

    2014-06-01

    Stimulated by Fajardo's remarkable study of the rovibrational spectra of CO isotopologues trapped in solid para-hydrogen, we have performed quantum Monte Carlo simulations to predict his observed vibrational frequency shifts and inertial rotational constants using 2-body potentials based on the best available models for the pH_2-pH_2 and CO-pH_2, potential energy functions. We started by fitting an analytic `Morse/Long-Range' (MLR) function to the 1D ``adiabaic hindered rotor" version of Hinde's 5D pH_2-pH_2 potential developed by Faruk et al. We then modified it to take account of many-body effects by scaling it until it yielded the correct equilibrium lattice parameters for the fcc and hcp structures of pure solid para-hydrogen. A CO molecule was then placed at different interstitial or substitution sites in large equilibrated fcc or hcp para-hydrogen lattices, and the structural and dynamical behaviors of the micro-solvation environment around CO were simulated with a PIMC algorithm using a 2D effective pH_2-CO potential based on the 5D H_2--CO potential energy surface recently reported by Li et al., with a lattice sum of values of the 2D CO vibrational difference potential being use to predict the vibrational frequency shift. The effective rotational constants Beff for CO in different solid para-hydrogen structures were also calculated and compared with the experimental observations and with predicted Beff values for CO in large-sized para-hydrogen--CO clusters. M. E. Fajardo, J. Phys. Chem. A 117, 13504 (2013). R. Hinde, J. Chem. Phys., 128, 154308 (2008). H. Li, X-L. Zhang, R.J. Le Roy, and P.-N. Roy, J. Chem. Phys. 139, 164315 (2013). R.J. Le Roy, C.C. Haugen, J. Tao and Hui Li, Mol. Phys., 109, 435 (2011) N. Faruk, R.J. Le Roy, and P.-N. Roy, J. Chem. Phys. (submitted December 2013). Y. Mizumoto and Y. Ohtsuki, Chem. Phys. Lett. 501, 304 (2011).

  20. 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.

  1. Successful treatment with infliximab for refractory para-ileostomal ulceration in a patient with Beh?et's disease.

    PubMed

    Ishioka, Mitsuaki; Onochi, Kengo; Suzuki, Yusato; Sawaguchi, Masayuki; Hatakeyama, Natsumi; Koizumi, Shigeto; Matsuhashi, Tamotsu; Jin, Mario; Ohnishi, Hirohide

    2015-08-01

    Beh?et's disease (BD) is a chronic disorder involving multiple organ systems including the small and large intestines. A 46-year-old female diagnosed with intestinal BD presented with ileocecal perforation and diffuse peritonitis and subsequently underwent ileocolic resection with ileostomy. After surgery, she suffered from refractory para-ileostomal ulceration associated with BD. Most importantly, however, treatment with infliximab was significantly effective in healing the ulceration. This is the first report of para-ileostomal ulceration associated with BD successfully treated with infliximab, suggesting the possible use of infliximab as a therapeutic option for para-stomal ulcers related to BD. PMID:26054449

  2. Dicopper(II) Metallacyclophanes with Electroswitchable Polymethyl-Substituted para-Phenylene Spacers.

    PubMed

    Ferrando-Soria, Jess; Castellano, Mara; Ruiz-Garca, Rafael; Cano, Joan; Julve, Miguel; Lloret, Francesc; Ruiz-Prez, Catalina; Pasn, Jorge; Caadillas-Delgado, Laura; Armentano, Donatella; Journaux, Yves; Pardo, Emilio

    2013-09-01

    Double-stranded anionic dinuclear copper(II) metallacyclic complexes of the paracyclophane type [Cu2L2](4-) have been prepared by the Cu(II)-mediated self-assembly of different para-phenylenebis(oxamato) bridging ligands with either zero-, one-, or four-electron-donating methyl substituents (L=N,N'-para-phenylenebis(oxamate) (ppba; 1), 2-methyl- N,N'-para-phenylenebis(oxamate) (Meppba; 2), and 2,3,5,6-tetramethyl- N,N'-para-phenylenebis(oxamate) (Me4ppba; 3)). These complexes have been isolated as their tetra-n-butylammonium (1 a-3 a), lithium(I) (1 b-3 b), and tetraphenylphosphonium salts (1 c-3 c). The X-ray crystal structures of 1 a and 3 c show a parallel-displaced ?-stacked conformation with a smaller deviation from perpendicularity between the two benzene rings and the basal planes of the square planar Cu(II) ions when increasing the number of methyl substituents (average dihedral angles (?) of 58.72(7) and 73.67(5) for 1 a and 3 c, respectively). Variable-temperature (2.0-300 K) magnetic-susceptibility measurements show an overall increase of the intramolecular antiferromagnetic coupling with the number of methyl substituents onto the para-phenylene spacers (-J=75-95, 100-124, and 128-144 cm(-1) for 1 a-c, 2 a-c, and 3 a-c, respectively; H=-JS1S2). Cyclic voltammetry (CV) measurements show a reversible one-electron oxidation of the double polymethyl-substituted para-phenylenediamidate bridging skeleton at a relatively low formal potential that decreases with the number of methyl substituents (E1=+0.33, +0.24, and +0.15 V vs. SCE for 1-3, respectively). The monooxidized dicopper(II) ?-radical cation species 3' prepared by the chemical oxidation of 3 with bromine exhibits intense metal-to-ligand charge-transfer (MLCT) transitions in the visible and near-IR (?max=595 and 875 nm, respectively) regions together with a rhombic EPR signal with a seven-line splitting pattern due to hyperfine coupling with the nuclear spin of the two Cu(II) ions. Density functional (DF) calculations for 3' evidence a characteristic iminoquinonoid-type short-long-short alternating sequence of C-N and C-C bonds for both tetramethyl-para-phenylenediamidate bridges and a large amount of spin density of negative sign mainly delocalized along each of the four benzene C atoms directly attached to the amidate N atoms, which is in agreement with a fully delocalized ?-stacked monoradical ligand description. Hence, the spins of the two Cu(II) ions (SCu=1/2) that are antiparallel aligned in 3 (OFF state) become parallel in 3' (ON state). Further developments may be then envisaged for this new permethylated dicopper(II) paracyclophane with a redox noninnocent ligand as a prototype for molecular magnetic electroswitch. PMID:23873803

  3. ParaHox gene expression in larval and postlarval development of the polychaete Nereis virens (Annelida, Lophotrochozoa)

    E-print Network

    Kulakova, Milana A.; Cook, Charles E.; Andreeva, Tatiana F.

    2008-05-29

    Open AcceResearch article ParaHox gene expression in larval and postlarval development of the polychaete Nereis virens (Annelida, Lophotrochozoa) Milana A Kulakova1, Charles E Cook*2 and Tatiana F Andreeva1 Address: 1Laboratory of Experimental...

  4. BOSQUE 30(1): 36-47, 2009 Modelos para estimar la biomasa de especies nativas en plantaciones

    E-print Network

    Rey Benayas, Jos Mara

    factors. RESUMEN El uso de los ecosistemas forestales como sumideros y reservorios de carbono es cada da- cidad de los ecosistemas para acumular materia orgnica a lo largo del tiempo (Brown 1997, Eamus et al ecosistema forestal (Schlegel et al.

  5. 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...

  6. Tempo de Converg^encia para o Equilibrio de Nash nos Jogos Empacotamento de Itens e Balanceamento

    E-print Network

    Vignatti, André L.

    Tempo de Converg^encia para o Equil´ibrio de Nash nos Jogos Empacotamento de Itens e Balanceamento convergência para o equilíbrio de Nash nos jogos empacotamento de itens e balanceamento de carga / André Luís) - Universidade Estadual de Campinas, Instituto de Computação. 1. Teoria dos jogos. 2. Problema de empacotamento

  7. 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.

  8. Salud Para Su Carozn--a Latino promotora-led cardiovascular health education program.

    PubMed

    Spinner, Jovonni R; Alvarado, Matilde

    2012-01-01

    Salud Para Su Carozn is a culturally sensitive, community-based program to increase heart healthy knowledge and behaviors among Latinos. Promotoras were trained using a 10-session manual to teach participants from 7 communities about heart disease risk factors and skills to achieve heart healthy behaviors. In 435 participants with pre-to-post self-reported data, there were increases in physical activity outside of work (57%-78%), heart health knowledge (49%-76%), and confidence in preparing heart healthy meals (66%-81%) (all Ps < .001). Results suggest that promotoras can provide effective health education to improve heart health risk behaviors in select Latino communities. PMID:22367258

  9. Rational extensions of the trigonometric Darboux-Pschl-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-Bcklund transformation for the trigonometric Darboux-Pschl-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].

  10. Effect of nuclear spin symmetry in cold and ultracold reactions: D + para/ortho-H$_2$

    E-print Network

    I. Simbotin; R. Ct

    2015-05-12

    We report results for reaction and vibrational quenching of the collision D with para-H$_2$($v,j=0$) and ortho-H$_2$($v,j=1$) at cold and ultracold temperatures. We investigate the effect of nuclear spin symmetry for barrier dominated processes ($0\\le v\\le 4$) 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 H$_2$, arising from contributions of specific partial waves. We discuss the implications on the results in this benchmark system for ultracold chemistry.

  11. Un diverticule gant para urtral chez lenfant rvl par une masse pelvienne

    PubMed Central

    Kassogu, Amadou; Diarra, Alkadri; Benzekri, Younes; Doumbia, Aliou; Bouabdallah, Youssef; Traor, Zacharia; Tizniti, Siham; Mellas, Soufiane; Tazi, Mohammed Fald; Ammari, Jalal Eddine El; Khallouk, Abdelhak; Fassi, Mohammed Jamal El; Farih, My Hassan

    2014-01-01

    Rsum Nous rapportons un cas de diverticule gant para-urtral chez un enfant de 18 mois, du point de vue des aspects cliniques, diagnostiques et thrapeutiques. Aucune anomalie associe na t releve. Le patient tait un enfant de sexe masculin, et la symptomatologie tait domine par la rtention aigu durine et la prsence dune infection urinaire. La chirurgie a consist en une diverticulectomie laparoscopique avec rimplantation urtro-vsicale. Lvolution a t favorable avec disparition des signes urinaires. PMID:24940473

  12. Effect of nuclear spin symmetry in cold and ultracold reactions: D + para/ortho-H2

    NASA Astrophysics Data System (ADS)

    Simbotin, Ionel; Ct, 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.

  13. ortho-, meta-, and para-dihydroindenofluorene derivatives as host materials for phosphorescent OLEDs.

    PubMed

    Romain, Maxime; Thiery, Sbastien; Shirinskaya, Anna; Declairieux, Cline; Tondelier, Denis; Geffroy, Bernard; Jeannin, Olivier; Rault-Berthelot, Jolle; Mtivier, Rmi; Poriel, Cyril

    2015-01-19

    This work reports the first structure-properties relationship study of ortho [2,1-c]-, meta [1,2-a]-, and para [1,2-b]dihydroindenofluorenes, highlighting the influence of bridge rigidification on the electronic properties. This study has made it possible to devise an extended ?-conjugated molecule with both a high triplet state energy level and excellent thermal and morphological stability. As a proof of concept, dihydroindenofluorenes were used as the host in sky-blue phosphorescent organic light-emitting diodes (PhOLEDs) with high performance. PMID:25469476

  14. New types of short-range orientational ordering in ortho- para hydrogen monolayers

    NASA Astrophysics Data System (ADS)

    Kokshenev, V. B.; Sullivan, N. S.

    2003-05-01

    Orientational ordering in monolayers of solid hydrogen is discussed in view of recent experimental findings in NMR studies of ( ortho) c-( para) 1- c-hydrogen mixtures on boron nitride substrate reported for ortho-H 2 concentrations 0.35? c?0.92 and temperatures 0.14? T?1.80 K. Analysis of the temperature-concentration behavior for the observed NMR frequency splitting is given on the basis of a two-dimension ( J=1) c-( J=0) 1- c-rotor model for which the fundamental parameters, quadrupolar coupling constant ?0=0.500.03 K and the crystal-field amplitude V0=0.700.10 K, are derived from experiment. The two distinct para-rotational (PR) short-range ordered structures driven by positive and negative crystalline fields are described in terms of the local alignment and orientation of the polar principal axis. It is shown that they are rather different from the ferromagnetic-type ordering suggested earlier by Harris and Berlinsky as a unique PR structure. The common quadrupolar glass and a new hindered rotor phases found below the 2D site percolation threshold cp=0.72 are also discussed.

  15. Comportamiento Sexual y Autoeficacia para la Negociacin de Sexo Ms Seguro en Personas Heterosexuales

    PubMed Central

    Prez-Jimnez, David; Santiago-Rivas, Marimer; Serrano-Garca, Irma

    2012-01-01

    La autoeficacia se le ha identificado como uno de los factores que puede facilitar o dificultar llevar a cabo sexo ms seguro. Estudios revelan que las personas que estn el relaciones estables usan mtodos de proteccin 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 condn masculino y la prctica de la masturbacin mutua, y la autoeficacia para llevar a cabo estas conductas. Los resultados reflejan que los hombres estn ms activos sexualmente y que el uso del condn y la prctica de la masturbacin mutua como alternativa de sexo ms seguro es muy baja. En los casos donde se usa el condn esta prctica es realizada en su mayora por las personas que se encuentran en una relacin de pareja casual. No obstante, los/las participantes tienen altos niveles de autoeficacia hacia ambas prcticas. Aunque la autoeficacia es uno de los factores que incide en decidir llevar a cabo sexo ms seguro, sta no es suficiente para que esta meta se logre. PMID:22837585

  16. Semantics-based distributed I/O with the ParaMEDIC framework.

    SciTech Connect

    Balaji, P.; Feng, W.; Lin, H.; Mathematics and Computer Science; Virginia Tech; North Carolina State Univ.

    2008-01-01

    Many large-scale applications simultaneously rely on multiple resources for efficient execution. For example, such applications may require both large compute and storage resources; however, very few supercomputing centers can provide large quantities of both. Thus, data generated at the compute site oftentimes has to be moved to a remote storage site for either storage or visualization and analysis. Clearly, this is not an efficient model, especially when the two sites are distributed over a wide-area network. Thus, we present a framework called 'ParaMEDIC: Parallel Metadata Environment for Distributed I/O and Computing' which uses application-specific semantic information to convert the generated data to orders-of-magnitude smaller metadata at the compute site, transfer the metadata to the storage site, and re-process the metadata at the storage site to regenerate the output. Specifically, ParaMEDIC trades a small amount of additional computation (in the form of data post-processing) for a potentially significant reduction in data that needs to be transferred in distributed environments.

  17. In-Situ Visualization Experiments with ParaView Cinema in RAGE

    SciTech Connect

    Kares, Robert John

    2015-10-15

    A previous paper described some numerical experiments performed using the ParaView/Catalyst in-situ visualization infrastructure deployed in the Los Alamos RAGE radiation-hydrodynamics code to produce images from a running large scale 3D ICF simulation. One challenge of the in-situ approach apparent in these experiments was the difficulty of choosing parameters likes isosurface values for the visualizations to be produced from the running simulation without the benefit of prior knowledge of the simulation results and the resultant cost of recomputing in-situ generated images when parameters are chosen suboptimally. A proposed method of addressing this difficulty is to simply render multiple images at runtime with a range of possible parameter values to produce a large database of images and to provide the user with a tool for managing the resulting database of imagery. Recently, ParaView/Catalyst has been extended to include such a capability via the so-called Cinema framework. Here I describe some initial experiments with the first delivery of Cinema and make some recommendations for future extensions of Cinemas capabilities.

  18. [Morbidity of pelvic lymphadenectomy and para-aortic lymphadenectomy in endometrial cancer].

    PubMed

    Agar, Nicolas; Philippe, Anne-Ccile; Bourdel, Nicolas; Rabischong, Benot; Canis, Michel; Le Bouedec, Guillaume; Mulliez, Aurlien; 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

  19. 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

  20. Ortho-to-para ratio in interstellar water on the sightline toward Sagittarius B2(N).

    PubMed

    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. PMID:23656468

  1. Rotational relaxation of CS by collision with ortho- and para-H{sub 2} molecules

    SciTech Connect

    Denis-Alpizar, Otoniel; Departamento de Fsica, Universidad de Matanzas, Matanzas 40100 ; Stoecklin, Thierry Halvick, Philippe; Dubernet, Marie-Lise

    2013-11-28

    Quantum mechanical investigation of the rotationally inelastic collisions of CS with ortho- and para-H{sub 2} 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-H{sub 2} colliding with CS in the j = 015 rotational levels and for collision energies ranging from 10{sup ?2} to 10{sup 3} cm{sup ?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{sup ?1}. Above 10 cm{sup ?1}, the approximation using the square root of the relative mass of the colliders to calculate the cross sections between a molecule and H{sub 2} from the data available with {sup 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.

  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; Boice, Daniel C.; Martinez, Susan E.

    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. Interaction between female mating preferences and predation may explain the maintenance of rare males in the pentamorphic fish Poecilia parae.

    PubMed

    Hurtado-Gonzales, Jorge L; Baldassarre, D T; Uy, J A C

    2010-06-01

    Variation in mating preferences coupled with selective predation may allow for the maintenance of alternative mating strategies. Males of the South American live-bearing fish Poecilia parae fall in one of five discrete morphs: red, yellow, blue, stripe-coloured tail (parae) and female mimic (immaculata). Field surveys indicate that the red and yellow morphs are the rarest and that their rarity is consistent across years. We explored the role of variable female mating preference and selective predation by visual predators in explaining the rarity of red and yellow males, and more generally, the maintenance of this extreme colour polymorphism. We presented wild-caught P. parae females and Aequidens tetramerus, the most common cichlid predator, with the five male colour morphs in separate trials to determine mating and prey preferences, respectively. We found that a large proportion of females shared a strong preference for the rare carotenoid-based red and yellow males, but a distinct group also preferred the blue and parae morphs. The cichlid predator strongly preferred red and yellow males as prey. Together, these results suggest that the interaction between premating sexual selection favouring and predation acting against the red and yellow morphs may explain their rarity in the wild. The trade-off between sexual and natural selection, accompanied by variation in female mating preferences, may therefore facilitate the maintenance of the striking colour polymorphism in P. parae. PMID:20456563

  5. Compilao de dados atmicos e moleculares do UV ao IV prximo para uso em sntese espectral

    NASA Astrophysics Data System (ADS)

    Coelho, P.; Barbuy, B.; Melendez, J.; Allen, D. M.; Castilho, B.

    2003-08-01

    Espectros sintticos so utis em uma grande variedade de aplicaes, desde anlise de abundncias em espectros estelares de alta resoluo ao estudo de populaes estelares em espectros integrados. A confiabilidade de um espectro sinttico depende do modelo de atmosfera adotado, do cdigo de formao de linhas e da qualidade dos dados atmicos e moleculares que so determinantes no clculo das opacidades da fotosfera. O nosso grupo no departamento de Astronomia no IAG tem utilizado espectros sintticos h mais de 15 anos, em aplicaes voltadas principalmente para a anlise de abundncias de estrelas G, K e M e populaes estelares velhas. Ao longo desse tempo, as listas de linhas vieram sendo construdas e atualizadas continuamente, e alguns acrscimos recentes podem ser citados: Castilho (1999, tomos e molculas no UV), Schiavon (1998, bandas moleculares de TiO) e Melendez (2001, tomos e molculas no IV prximo). Com o intuito de calcular uma grade de espectros do UV ao IV prximo para uso no estudo de populaes estelares velhas, se fazia necessrio compilar e homogeneizar as diversas listas em apenas uma lista atmica e uma molecular. Nesse processo, a nova lista compilada foi correlacionada com outras bases de dados (NIST, Kurucz Database, O' Brian et al. 1991) para atualizao dos parmetros que caracterizam a transio atmica (comprimento de onda, log gf e potencial de excitao). Adicionalmente as constantes de interao C6 foram calculadas segundo a teoria de Anstee & O'Mara (1995) e artigos posteriores. As bandas moleculares de CH e CN foram recalculadas com o programa LIFBASE (Luque & Crosley 1999). Nesse poster esto detalhados os procedimentos citados acima, as comparaes entre espectros calculados com as novas listas e espectros observados em alta resoluo do Sol e de Arcturus, e uma anlise do impacto decorrente da utilizao de diferentes modelos de atmosfera no espectro sinttico. Ao final, temos uma lista de linhas atmicas com mais de 24.000 linhas e uma lista molecular com as molculas CN, CH, OH, NH, MgH, C2, TiO Gama, CO, FeH, adequadas ao estudo de estrelas G, K e M e populaes estelares velhas.

  6. Metabolism of Doubly para-Substituted Hydroxychlorobiphenyls by Bacterial Biphenyl Dioxygenases

    PubMed Central

    Pham, Thi Thanh My; Sondossi, Mohammad

    2015-01-01

    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

  7. Searching for Auxetics with DYNA3D and ParaDyn

    SciTech Connect

    Hoover, W G; Hoover, C G

    2004-09-11

    We sought to simulate auxetic behavior by carrying out dynamic analyses of mesoscopic model structures. We began by generating nearly periodic cellular structures. Four-node 'Shell' elements and eight-node 'Brick' elements are the basic building blocks for each cell. The shells and bricks obey standard elastic-plastic continuum mechanics. The dynamical response of the structures was next determined for a three-stage loading process: (1) homogeneous compression; (2) viscous relaxation; (3) uniaxial compression. The simulations were carried out with both serial and parallel computer codes--DYNA3D and ParaDyn--which describe the deformation of the shells and bricks with a robust contact algorithm. We summarize the results found here.

  8. Coordination nano-space as stage of hydrogen ortho-para conversion.

    PubMed

    Kosone, Takashi; Hori, Akihiro; Nishibori, Eiji; Kubota, Yoshiki; Mishima, Akio; Ohba, Masaaki; Tanaka, Hiroshi; Kato, Kenichi; Kim, Jungeun; Real, Jos Antonio; Kitagawa, Susumu; Takata, Masaki

    2015-07-01

    The ability to design and control properties of nano-sized space in porous coordination polymers (PCPs) would provide us with an ideal stage for fascinating physical and chemical phenomena. We found an interconversion of nuclear-spin isomers for hydrogen molecule H2 adsorbed in a Hofmann-type PCP, {Fe(pz)[Pd(CN)4]} (pz=pyrazine), by the temperature dependence of Raman spectra. The ortho (o)-para (p) conversion process of H2 is forbidden for an isolated molecule. The charge density study using synchrotron radiation X-ray diffraction reveals the electric field generated in coordination nano-space. The present results corroborate similar findings observed on different systems and confirm that o-p conversion can occur on non-magnetic solids and that electric field can induce the catalytic hydrogen o-p conversion. PMID:26587262

  9. Hybrid paraplegic locomotion with the ParaWalker using intramuscular stimulation: a single subject study.

    PubMed

    Nene, A V; Jennings, S J

    1989-04-01

    Functional intramuscular electrical stimulation of the gluteus maximus and gluteus medius on the stance side whilst walking is reported. The subject was an adult, male, post-traumatic complete paraplegic with lesion level at T7. He had been using surface stimulation to aid his walking with the adult ParaWalker Orthosis but suffered unpleasant anterior abdominal wall muscle contractions with high amplitude stimulation. The experimental use of percutaneous intramuscular Platinum/Iridium wire electrodes demonstrated that more forceful contractions of the buttock muscles could be achieved without any effect on abdominal wall musculature. This prompted the use of a permanent, implanted system. The system is inductively coupled to an external control device and is working satisfactorily 7 months after implantation. PMID:2785668

  10. Polycrystalline para-terphenyl scintillator adopted in a $\\beta^-$ detecting probe for radio-guided surgery

    E-print Network

    Camillocci, Elena Solfaroli; Bocci, Valerio; Collamati, Francesco; De Lucia, Erika; Faccini, Riccardo; Marafini, Michela; Mattei, Ilaria; Morganti, Silvio; Paramatti, Riccardo; Patera, Vincenzo; Pinci, Davide; Recchia, Luigi; Russomando, Andrea; Sarti, Alessio; Sciubba, Adalberto; Senzacqua, Martina; Voena, Cecilia

    2015-01-01

    A radio-guided surgery technique exploiting $\\beta^-$ 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 $\\beta^-$ 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...

  11. Ortho/para ratio of H2O+ toward Sagittarius B2(M) revisited.

    PubMed

    Schilke, Peter; Lis, Dariusz C; Bergin, Edwin A; Higgins, Ronan; Comito, Claudia

    2013-10-01

    The HIFI instrument aboard the Herschel satellite has allowed the observation and characterization of light hydrides, the building blocks of interstellar chemistry. In this article, we revisit the ortho/para ratio for H2O(+) toward the Sgr B2(M) cloud core. The line of sight toward this star forming region passes through several spiral arms and the gas in the Bar potential in the inner Galaxy. In contrast to earlier findings, which used fewer lines to constrain the ratio, we find a ratio of 3, which is uniformly consistent with high-temperature formation of the species. In view of the reactivity of this ion, this matches the expectations. PMID:23713712

  12. 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

  13. 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.

  14. 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

  15. Coordination nano-space as stage of hydrogen orthopara conversion

    PubMed Central

    Kosone, Takashi; Hori, Akihiro; Nishibori, Eiji; Kubota, Yoshiki; Mishima, Akio; Ohba, Masaaki; Tanaka, Hiroshi; Kato, Kenichi; Kim, Jungeun; Real, Jos Antonio; Kitagawa, Susumu; Takata, Masaki

    2015-01-01

    The ability to design and control properties of nano-sized space in porous coordination polymers (PCPs) would provide us with an ideal stage for fascinating physical and chemical phenomena. We found an interconversion of nuclear-spin isomers for hydrogen molecule H2 adsorbed in a Hofmann-type PCP, {Fe(pz)[Pd(CN)4]} (pz=pyrazine), by the temperature dependence of Raman spectra. The ortho (o)para (p) conversion process of H2 is forbidden for an isolated molecule. The charge density study using synchrotron radiation X-ray diffraction reveals the electric field generated in coordination nano-space. The present results corroborate similar findings observed on different systems and confirm that op conversion can occur on non-magnetic solids and that electric field can induce the catalytic hydrogen op conversion. PMID:26587262

  16. Searching for auxetics with DYNA3D and ParaDyn

    NASA Astrophysics Data System (ADS)

    Hoover, Wm. G.; Hoover, C. G.

    2005-03-01

    We sought to simulate auxetic behavior by carrying out dynamic analyses of mesoscopic model structures. We began by generating nearly periodic cellular structures. Four-node Shell elements and eight-node Brick elements are the basic building blocks for each cell. The shells and bricks obey standard elastic-plastic continuum mechanics. The dynamical response of the structures was next determined for a three-stage loading process: (1) homogeneous compression; (2) viscous relaxation; (3) uniaxial compression. The simulations were carried out with both serial and parallel computer codes - DYNA3D and ParaDyn - which describe the deformation of the shells and bricks with a robust contact algorithm. We summarize the results found here.

  17. La Observacin Sistemtica de Vecindarios: El caso de Chile y sus perspectivas para Trabajo Social

    PubMed Central

    Sanhueza, Guillermo E.; Delva, Jorge; Andrade, Fernando H.; Grogan-Kaylor, Andrew; Bares, Cristina; Castillo, Marcela

    2012-01-01

    El estudio acerca de las caractersticas de los vecindarios y sus efectos sobre las personas ha llegado a ser un rea de creciente atencin por parte de investigadores de diversas disciplinas en pases desarrollados. Aunque actualmente existen diversas metodologas para estudiar efectos del vecindario, una de las ms utilizadas es la Observacin Sistemtica de Vecindarios Systematic Social Observation SSO, en inglsporque permite recolectar informacin acerca de diversas caractersticas del entorno fsico, social, ambiental y econmico de los vecindarios donde se aplica. El objetivo de este artculo es (i) dar a conocer sumariamente algunas investigaciones influyentes sobre efectos del vecindario en Estados Unidos, ii) describir cmo se dise e implement la Observacin Sistemtica de Vecindarios en la ciudad de Santiago de Chile, iii) sealar algunos facilitadores y obstaculizadores de la implementacin del proyecto y, finalmente iv) enunciar posibles contribuciones y limitaciones que esta metodologa ofrecera al trabajo social en Chile. PMID:24791060

  18. 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.

  19. Prevention of high voltage breakdown by using para-xylylene conformal coating for scientific satellites. II

    NASA Astrophysics Data System (ADS)

    Tsuneoka, Yasuharu; Ohshima, Tsutomu; Hashimoto, Masashi; Hayashi, Tomonau

    The study demonstrates the effectiveness of the conformal coating of poly-para-xylylene (parylene) in preventing electrical breakdown in high voltage electronics. The parylene is a dielectric material with high dielectric strength and high melting temperature, and is shown to provide a pinhole-free conformal insulation film, which is very effective in preventing high-voltage breakdown. To promote adhesion of parylene films on various substrates, a pretreatment procedure with silicone coupling agents was studied, and the procedure established was applied to 16 high-voltage power supplies on the Akebono scientific satellite. From the start of observations in orbit up to the time of writing - more than one year - no trouble caused by high voltage breakdown occurred, this proving the present coating technique's effectiveness for application to high-voltage power supplies in spacecraft.

  20. 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.

  1. Statistical ortho-to-para ratio of water desorbed from ice at 10 kelvin.

    PubMed

    Hama, Tetsuya; Kouchi, Akira; Watanabe, Naoki

    2016-01-01

    The anomalously low ortho-to-para ratios (OPRs) exhibited by gaseous water in space have been used to determine the formation temperature (<50 kelvin) of ice on cold interstellar dust. This approach assumes that the OPR of water desorbed from ice is related to the ice formation temperature on the dust. However, we report that water desorbed from ice at 10 kelvin shows a statistical high-temperature OPR of 3, even when the ice is produced in situ by hydrogenation of O2, a known formation process of interstellar water. This invalidates the assumed relation between OPR and temperature. The necessary reinterpretation of the low OPRs will help elucidate the chemical history of interstellar water from molecular clouds and processes in the early solar system, including comet formation. PMID:26721994

  2. High-pressure dissociation of crystalline para-diiodobenzene: optical experiments and Car-Parrinello calculations.

    PubMed

    Brillante, Aldo; Della Valle, Raffaele G; Farina, Luca; Venuti, Elisabetta; Cavazzoni, Carlo; Emerson, Andrew P J; Syassen, Karl

    2005-03-01

    We have investigated the high-pressure properties of the molecular crystal para-diiodobenzene, by combining optical absorption, reflectance, and Raman experiments with Car-Parrinello simulations. The optical absorption edge exhibits a large red shift from 4 eV at ambient conditions to about 2 eV near 30 GPa. Reflectance measurements up to 80 GPa indicate a redistribution of oscillator strength toward the near-infrared. The calculations, which describe correctly the two known molecular crystal phases at ambient pressure, predict a nonmolecular metallic phase, stable at high pressure. This high-density phase is characterized by an extended three-dimensional network, in which chemically bound iodine atoms form layers connected by hydrocarbon bridges. Experimentally, Raman spectra of samples recovered after compression show vibrational modes of elemental solid iodine. This result points to a pressure-induced molecular dissociation process which leads to the formation of domains of iodine and disordered carbon. PMID:15740142

  3. Resonances in ultracold reactive collisions of vibrationally excited ortho and para H2 with D

    NASA Astrophysics Data System (ADS)

    Simbotin, I.; Ct, R.

    2014-05-01

    Recent experimental work on collisions of molecular hydrogen with metastable helium showed pronounced shape resonances in the sub-kelvin regime, which have a dramatic effect on the energy dependence of cross sections. In our computational work we will address the question of whether such near threshold resonances exist for the benchmark system H2 + D. Detailed computations will be performed for an energy range extending from ultracold to about E = 20 kelvin (to include the temperature regime of astrophysical interest, e.g., relevant to cold molecular clouds). We will explore several initial vibrational states of H2 in order to see how the internal vibrational excitation will influence the presence of shape resonances. We will also investigate the effect of the nuclear spin symmetry of H2 by computing scattering rates for both ortho and para hydrogen, which could give significantly different results at low energies. Partial support from ARO.

  4. PREVENCION DE VIH PARA MUJERES HISPANAS DE 50 AOS Y MS

    PubMed Central

    Villegas, N.; Cianelli, R.; Ferrer, L.; Kaelber, L.; Peragallo, N.; Yaya, Alexandra O.

    2012-01-01

    Introduccin Las mujeres Hispanas de 50 aos y ms (MHC) son una minora en Estados Unidos que est a elevado riesgo de adquirir VIH y son el grupo menos estudiado en lo que respecta a salud, caractersticas sociales y de comportamiento sexual. Objetivo Investigar los factores que incrementan el riesgo de VIH en las MHC con el propsito de desarrollar o adaptar una intervencin apropiada para la edad y la cultura "de este grupo de mujeres. Metodologa Estudio descriptivo de corte transversal con una muestra de 50 MHC, sexualmente activas y que residan en Miami, Florida, Estados Unidos. Se utiliz un cuestionario estructurado administrado por entrevistadores entrenados y bilinges (ingls/espaol). Las participantes fueron reclutadas en diferentes lugares en el Sur de Florida. Para el anlisis de los datos se utiliz estadstica descriptiva, tanto medidas de tendencia central como medidas de dispersin. Resultados La edad promedio de las MHC fue de 55,7 6 aos (rango 5076 aos). Todas las MHC estaban en la menopausia. Prevencin del VIH Las MHC reportaron niveles medios de conocimientos sobre VIH y comunicacin con la pareja. En la muestra se report la presencia de sntomas depresivos, violencia en la pareja, actitudes negativas hacia las personas viviendo con VIH y baja percepcin de riesgo de adquirir VIH. Las MHC mencionaron necesidades de aprendizaje en tpicos relacionados con prevencin de VIH y cambios de la edad. Conclusin Las MHC estn a riesgo de adquirir VIH y tienen necesidades especiales en trminos de educacin sobre prevencin de VIH. PMID:25242862

  5. Prevalence of oral trauma in Para-Pan American Games athletes.

    PubMed

    Andrade, Rafaela Amarante; Modesto, Adriana; Evans, Patricia Louise Scabell; Almeida, Anne Louise Scabell; da Silva, Juliana de Jesus Rodrigues; Guedes, Aurelino Machado Lima; Guedes, Fbio Ribeiro; Ranalli, Dennis N; Tinoco, Eduardo Muniz Barretto

    2013-08-01

    The aim of this cross-sectional epidemiological survey was to assess the prevalence of oral trauma in athletes representing 25 countries competing at the most recent Para-Pan American Games (III PARAPAN) held in Rio de Janeiro, Brazil. The study was approved by the appropriate institutional review board. The examiners participated in standardization and calibration training sessions before the field phase began. Invitations were sent to >1200 participating athletes competing in eight sports and to the Medical Committee of the Para-Pan American Sports Organization before and during the III PARAPAN. A convenience sample of 120 athletes was recruited. After signing an informed consent, all athletes answered a questionnaire. Data were collected at the clinical examination and recorded in a specific trauma form. The mean age of the athletes was 32.5 years. Males comprised 79.2% of the sample; females 20.8%. The prevalence of oral trauma among the athletes was 47.5% (N = 57). However, only 15 athletes reported that these traumatic injuries were sports-related. The sport with the highest prevalence of oral trauma was judo (75%); the least was volleyball with no reported traumatic injuries. The most common traumatic injury was enamel fracture (27.4%). The teeth most affected were the maxillary permanent central incisors (N = 19), followed by the maxillary premolars (N = 8). On the basis of the results of this study of oral trauma among athletes examined at the III PARAPAN, a recommendation for enhanced educational efforts and the use of properly fitted mouthguards to prevent traumatic injuries among high-performance athletes with disabilities seems warranted. PMID:22882839

  6. Uso de modelos mecnicos em curso informal de astronomia para deficientes visuais. Resgate de uma experincia

    NASA Astrophysics Data System (ADS)

    Tavares, E. T., Jr.; Klafke, J. C.

    2003-08-01

    O presente trabalho prope-se a resgatar uma experincia que teve lugar no Planetrio de So Paulo nos anos 60. Em 1962, o Sr. Accio, ento com 37 anos, deficiente visual desde os 27, passou a assistir s aulas ministradas pelo Prof. Aristteles Orsini aos integrantes do corpo de servidores do Planetrio. O Sr. Accio era o nico deficiente da turma e, embora possusse conhecimentos bsicos e relativamente avanados de matemtica, enfrentava dificuldades na compreenso e acompanhamento da exposio, como tambm em estudos posteriores. Com o intuito de auxili-lo na superao desses problemas, o Prof. Orsini solicitou a construo de modelos mecnicos que, atravs do sentido do tato, permitissem o acompanhamento das aulas e a transposio do modelo para o "constructo" mental. Essa prtica mostrou-se to eficaz que facilitou sobejamente o aprendizado da matria pelo sujeito. O Sr. Accio passou a integrar o corpo de professores do Planetrio/Escola Municipal de Astrofsica, tendo ficado responsvel pelo curso de "Introduo Astronomia" por vrios anos. Alm disso, a experincia foi to bem sucedida que alguns dos modelos tiveram seus elementos constitutivos pintados diferencialmente para serem utilizados em cursos regulares do Planetrio, tornando-se parte integrante do conjunto de recursos didticos da instituio. pensando nessa eficcia, tanto em seu objetivo original permitir o aprendizado de um deficiente visual quanto no subsidirio recurso didtico sistemtico da instituio que decidimos resgatar essa experincia. Estribados nela, acreditamos ser extremamente produtivo, em termos educacionais, o aperfeioamento dos modelos originais, agora resgatados e restaurados, e a criao de outros que pudessem ser utilizados no ensino dessa cincia a deficientes visuais.

  7. Desarrollo curricular, conciencia ambiental y tecnologia para estudiantes de intermedia: Una investigacion en accion

    NASA Astrophysics Data System (ADS)

    Rodriguez Ramos, Teresita

    Se llev a cabo una investigacin en accin con los propsitos de 1) documentar las relaciones de las tecnologas de la informacin y la comunicacin en las clases de ciencias de escuela intermedia como elemento de apoyo cuando se aborda el tema ambiental y sus conceptos pertinentes, a partir de las observaciones de la investigadora, as como las entrevistas y diarios reflexivos de los estudiantes de una escuela intermedia en la zona metropolitana, y luego 2) disear una unidad instruccional sobre el tema ambiental que integre actividades tecnologas para el curso de ciencias de la escuela intermedia segn el modelo PROCIC y las observaciones que hayan iniciado los estudiantes participantes. Finalmente, se plantearon las implicaciones educativas para el currculo del Programa de Ciencias al instrumentar este modelo de unidad mediante PROCIC, e integrado la tecnologa y el tema ambiental. Los hallazgos se analizaron y se categorizaron de acuerdo con las preguntas de investigacin. El hallazgo principal de la investigacin aborda las cuatro relaciones centrales en las que se articula la utilizacin de las tecnologas y sus aplicaciones en la clase de ciencias. Estas cuatro relaciones que recogen la posicin de los estudiantes son: 1) Perspectiva de los estudiantes hacia la tecnologa. 2) Participacin de los estudiantes en los aspectos docentes. 3) Aprendizaje estudiantil sobre el ambiente, y 4) Conciencia ambiental en relacin con la vida diaria. Estas relaciones ponen de manifiesto,cmo se plantea en las implicaciones, la necesidad de ms investigacin en accin en la sala de clases, la importanciacomo tema transversalde la conciencia ambiental mediante la tecnologa al construir conocimientos significativos dentro y fuera de la escuela, as como, valorar la investigacin y la dialogicidad en la sala de clases como actividades que obligan al reexamen de la prctica didctica en su formas curriculares de objetivos, recursos, actividades, evaluacin, entre otros. Estos planteamientos definen la unidad curricular que se propone en el cuatro captulo.

  8. Evaluation of para-dichlorobenzene emissions from solid moth repellant as a source of indoor air pollution

    SciTech Connect

    Chang, J.C.S.; Krebs, K.A.

    1992-01-01

    The paper reports results of dynamic and static chamber tests to evaluate para-dichlorobenzene emission rates from mothcakes. The data were analyzed by a model that assumes that the emission rate is controlled by gas-phase mass transfer. Results indicate that the para-dichlorobenzene emission from mothcakes is a temperature-sensitive sublimation process. Full-scale house tests were also conducted to measure mass transfer coefficients based on the model developed. The values of the mass transfer coefficient obtained are very comparable to those estimated by theoretical heat transfer studies.

  9. Factor Analysis of the Spanish Version of the WAIS: The Escala de Inteligencia Wechsler para Adultos (EIWA).

    ERIC Educational Resources Information Center

    Gomez, Francisco C., Jr.; And Others

    1992-01-01

    The standardization of the Escala de Inteligencia Wechsler para Adultos (EIWA) and the original Wechsler Adult Intelligence Scale (WAIS) were subjected to principal components analysis to examine their comparability for 616 EIWA subjects and 800 WAIS subjects. Similarity of factor structures of both scales is supported. (SLD)

  10. Significado de los cambios en el cuello uterino: Gua para la salud de la mujer-mobi

    Cancer.gov

    Explica los pasos que deben seguirse despus de un resultado anormal en una prueba de Pap o del VPH, as como las formas de diagnosticar y tratar las afecciones en el cuello uterino. Tambin contiene informacin sobre las pautas para los exmenes de deteccin y las vacunas contra el VPH.

  11. A Conceptual Model for Supporting Para-Teacher Learning in an Indian Non-Governmental Organization (NGO)

    ERIC Educational Resources Information Center

    Raval, Harini; McKenney, Susan; Pieters, Jules

    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

  12. Etnografa acelerada para transformar normas sociales sobre gnero y sexualidad en hombres puertorriqueos heterosexuales1,2

    PubMed Central

    Ortiz-Torres, Blanca; Rivera-Ortiz, Rafael J.; Mendoza, Sigrid

    2014-01-01

    Resumen La construccin de roles de gnero dominantes contribuyen al riesgo de contraer VIH, y por tal razn se ha urgido a que se integren las normas sociales relativas al gnero en las intervenciones preventivas del VIH. Este estudio pretende adaptar y desarrollar una intervencin que facilite la transformacin de normas sociales del gnero y de prcticas sexuales en hombres puertorriqueos. La intervencin propone transformar normas sociales relacionadas al gnero y sexualidad en barras comunitarias utilizando el modelo de lderes de opinin. Luego de ser elegidos/as, los/as lderes de opinin diseminan mensajes integrando la importancia de relaciones equitativas entre parejas para la prevencin del VIH. La primera fase de esta intervencin es discutida en este artculo, la cual incluye un proceso de etnografa acelerada para identificar los escenarios comunitarios en los que podemos desarrollar esta intervencin y permitirnos entender la cultura de las barras comunitarias. A partir de las observaciones etnogrficas, 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 intervencin para que respondieran a la particularidad de los/as participantes. PMID:25530828

  13. Esquema Hibrido para Amostragem de Mapas de Iluminac~ao em renderizac~oes foto-realistas

    E-print Network

    de Figueiredo, Luiz Henrique

    Esquema Hibrido 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 grafica. Atual- mente a renderizac~ao foto-realista de cenas sinteticas com iluminac

  14. 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...

  15. Familiares a cargo de pacientes de cncer: funciones y desafos (PDQ)Versin para profesionales de salud

    Cancer.gov

    Sumario informativo revisado por expertos acerca de los desafos que enfrentan los familiares a cargo de los pacientes con cncer. Este resumen se centra en las funciones tpicas y las inquietudes de las personas a cargo del paciente y en las intervenciones tiles para esas personas.

  16. Equilibrium (a), (b) and para-equilibrium (c), (d) phase diagrams for the two steels received from POSCO

    E-print Network

    Cambridge, University of

    Equilibrium (a), (b) and para-equilibrium (c), (d) phase diagrams for the two steels received from POSCO 1000 1200 1400 1600 1800 0 20 40 60 80 100 35 wt.% (a) DT2_P: Equilibrium Amountofphase_P: Equilibrium Amountofphase/wt% Temperature / K Austenite ferrite Liquid Cementite Ferrite 51 wt

  17. Plataforma genrica para desarrollos basados en agentes mviles Guillermo Glez. de Rivera, Ricardo Ribalda, Jos Cols, Javier Garrido

    E-print Network

    Gonzlez de Rivera, Guillermo

    mviles. Los agentes se pueden interconectar mediante gran cantidad de medios fsicos como GSM, Wireless ellos estara involucrado en la creacin de los elementos hardware necesarios para poder estar frente infraestructura y tiempo de desarrollo. El presente trabajo describe una plataforma funcional sobre la que poder

  18. Relacin de asignaturas que se ofertan en la convocatoria de alumnado interno, para el curso acadmico 2015 / 2016

    E-print Network

    Escolano, Francisco

    Relacin de asignaturas que se ofertan en la convocatoria de alumnado interno, para el curso a alumnos de 3 y 4 curso. M Isabel Sospedra Lpez 27522 Nutricin clnica II 3 Grado en Nutricin Humana y Diettica Dirigido a alumnos de 3 y 4 curso. Jos Miguel Martnez Sanz #12;

  19. Tese apresentada para obteno do ttulo de Doutor em Matemtica pelo Instituto Nacional de Matemtica Pura e Aplicada

    E-print Network

    de Figueiredo, Luiz Henrique

    Tese apresentada para obteno do ttulo de Doutor em Matemtica pelo Instituto Nacional de de Figueiredo Co-orientador: Mario Costa Sousa Rio de Janeiro 22 de Fevereiro de 2011 #12;#12;On Sketches for Modeling Emilio Ashton Vital Brazil Advisor: Luiz Henrique de Figueiredo Co-advisor: Mario

  20. Planificar la transicin en la etapa final de la vida (PDQ)Versin para profesionales de salud

    Cancer.gov

    Resumen de informacin revisada por expertos sobre la preparacin necesaria por parte de los proveedores de atencin de la salud, los pacientes y sus familas para la transicin a la atencin del cncer avanzado en la etapa final de la vida.

  1. TOXICOKINETICS AND STRUCTURE-ACTIVITY RELATIONSHIPS OF NINE PARA-SUBSTITUTED PHENOLS IN RAT EMBRYOS IN VITRO

    EPA Science Inventory

    The purpose of this study was to examine the pharmacokinetics of embryo uptake following exposure to a variety of related chemicals in rodent embryo culture. he uptake of nine radiolabeled para-substituted phenols by day 10 (9-13 somite stage) rat embryos in vitro was determined ...

  2. para-Substituted N-Nitroso-N-oxybenzenamine Ammonium Salts: A New Class of Redox-sensitive Nitric Oxide Releasing

    E-print Network

    Schlegel, H. Bernhard

    undergoing a one electron oxidation. Oxidation of these compounds can be achieved through chemical and enzymatic kinetic properties of the compounds. Thus para-substituted N-nitroso-N-oxyben- zenamine salts) and participating in neuronal synaptic transmission.36 Endogenous NO is generated from arginine by the catalytic

  3. Theoretical Study of the Mechanism Behind the para-Selective Nitration of Toluene in Zeolite H-Beta

    SciTech Connect

    Andersen, Amity; Govind, Niranjan; Subramanian, Lalitha

    2011-11-28

    Periodic density functional theory calculations were performed to investigate the origin of the favorable para-selective nitration of toluene exhibited by zeolite H-beta with acetyl nitrate nitration agent. Energy calculations were performed for each of the 32 crystallographically unique Bronsted acid sites of a beta polymorph B zeolite unit cell with multiple Bronsted acid sites of comparable stability. However, one particular aluminum T-site with three favorable Bronsted site oxygens embedded in a straight 12-T channel wall provides multiple favorable proton transfer sites. Transition state searches around this aluminum site were performed to determine the barrier to reaction for both para and ortho nitration of toluene. A three-step process was assumed for the nitration of toluene with two organic intermediates: the pi- and sigma-complexes. The rate limiting step is the proton transfer from the sigma-complex to a zeolite Bronsted site. The barrier for this step in ortho nitration is shown to be nearly 2.5 times that in para nitration. This discrepancy appears to be due to steric constraints imposed by the curvature of the large 12-T pore channels of beta and the toluene methyl group in the ortho approach that are not present in the para approach.

  4. 75 FR 34943 - Defense Federal Acquisition Regulation Supplement; Para-Aramid Fibers and Yarns Manufactured in a...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-21

    ... Register on December 18, 2008 (73 FR 76970). The comment period closed on February 17, 2009. 10 U.S.C... Accordingly, the interim rule amending 48 CFR parts 225 and 252, which was published at 73 FR 76970 on... Supplement; Para-Aramid Fibers and Yarns Manufactured in a Qualifying Country AGENCY: Defense...

  5. Significado de los cambios en el cuello uterino: Gua para la salud de la mujer-epub

    Cancer.gov

    Explica los pasos que deben seguirse despus de un resultado anormal en una prueba de Pap o del VPH, as como las formas de diagnosticar y tratar las afecciones en el cuello uterino. Tambin contiene informacin sobre las pautas para los exmenes de deteccin y las vacunas contra el VPH.

  6. Soporte para el anlisis de workloads en el proyecto eNANOS Ivan Rodero, Julita Corbaln, Alejandro Duran, Jess Labarta

    E-print Network

    Corbalan, Julita

    Duran, Jess Labarta Dept. Arquitectura de Computadors Universitat Politcnica de Catalunya Campus Nord planificador local que los gestione. Aunque se est trabajando en definir una arquitectura en la planificacin momento hemos implementado la coordinacin entre los dos niveles inferiores de la arquitectura. Para

  7. MANIFIESTO 8 de MARZO de 2013 La Red de Unidades de Igualdad de Gnero para la Excelencia Universitaria

    E-print Network

    Fernndez Pascual, Ricardo

    1 MANIFIESTO 8 de MARZO de 2013 La Red de Unidades de Igualdad de Gnero para la Excelencia el contexto de la crisis econmica, las polticas de igualdad continan siendo esenciales en la UNIVERSIDADES las polticas de igualdad son necesarias porque: 1.- Todava hay que erradicar las desigualdades

  8. Conservation of ParaHox genes' function in patterning of the digestive tract of the marine gastropod Gibbula varia

    PubMed Central

    2010-01-01

    Background Presence of all three ParaHox genes has been described in deuterostomes and lophotrochozoans, but to date one of these three genes, Xlox has not been reported from any ecdysozoan taxa and both Xlox and Gsx are absent in nematodes. There is evidence that the ParaHox genes were ancestrally a single chromosomal cluster. Colinear expression of the ParaHox genes in anterior, middle, and posterior tissues of several species studied so far suggest that these genes may be responsible for axial patterning of the digestive tract. So far, there are no data on expression of these genes in molluscs. Results We isolated the complete coding sequences of the three Gibbula varia ParaHox genes, and then tested their expression in larval and postlarval development. In Gibbula varia, the ParaHox genes participate in patterning of the digestive tract and are expressed in some cells of the neuroectoderm. The expression of these genes coincides with the gradual formation of the gut in the larva. Gva-Gsx patterns potential neural precursors of cerebral ganglia as well as of the apical sensory organ. During larval development this gene is involved in the formation of the mouth and during postlarval development it is expressed in the precursor cells involved in secretion of the radula, the odontoblasts. Gva-Xolx and Gva-Cdx are involved in gut patterning in the middle and posterior parts of digestive tract, respectively. Both genes are expressed in some ventral neuroectodermal cells; however the expression of Gva-Cdx fades in later larval stages while the expression of Gva-Xolx in these cells persists. Conclusions In Gibbula varia the ParaHox genes are expressed during anterior-posterior patterning of the digestive system. This colinearity is not easy to spot during early larval stages because the differentiated endothelial cells within the yolk permanently migrate to their destinations in the gut. After torsion, Gsx patterns the mouth and foregut, Xlox the midgut gland or digestive gland, and Cdx the hindgut. ParaHox genes of Gibbula are also expressed during specification of cerebral and ventral neuroectodermal cells. Our results provide additional support for the ancestral complexity of Gsx expression and its ancestral role in mouth patterning in protostomes, which was secondarily lost or simplified in some species. PMID:20624311

  9. Intensity-Modulated Radiation Therapy for the Treatment of Squamous Cell Anal Cancer With Para-aortic Nodal Involvement

    SciTech Connect

    Hodges, Joseph C.; Das, Prajnan; Eng, Cathy; Reish, Andrew G.; Beddar, A. Sam; Delclos, Marc E.; Krishnan, Sunil; Crane, Christopher H.

    2009-11-01

    Purpose: To determine the rates of toxicity, locoregional control, distant control, and survival in anal cancer patients with para-aortic nodal involvement, treated with intensity-modulated radiotherapy (IMRT) and concurrent chemotherapy at a single institution. Methods and Materials: Between 2001 and 2007, 6 patients with squamous cell anal cancer and para-aortic nodal involvement were treated with IMRT and concurrent infusional 5-fluorouracil and cisplatin. The primary tumor was treated with a median dose of 57.5 Gy (range, 54-60 Gy), involved para-aortic, pelvic, and inguinal lymph nodes were treated with a median dose of 55 Gy (range, 50.5-55 Gy), and noninvolved nodal regions were treated with a median dose of 45 Gy (range, 43.5-45 Gy). Results: After a median follow-up of 25 months, none of the patients had a recurrence at the primary tumor, pelvic/inguinal nodes, or para-aortic nodes, whereas 2 patients developed distant metastases to the liver. Four of the 6 patients are alive. The 3-year actuarial locoregional control, distant control, and overall survival rates were 100%, 56%, and 63%, respectively. Four of the 6 patients developed Grade 3 acute gastrointestinal toxicity during chemoradiation. Conclusions: Intensity-modulated radiotherapy and concurrent chemotherapy could potentially serve as definitive therapy in anal cancer patients with para-aortic nodal involvement. Adjuvant chemotherapy may be indicated in these patients, as demonstrated by the distant failure rates. These patients need to be followed carefully because of the potential for treatment-related toxicities.

  10. Monoamine transporter and receptor interaction profiles of novel psychoactive substances: para-halogenated amphetamines and pyrovalerone cathinones.

    PubMed

    Rickli, Anna; Hoener, Marius C; Liechti, Matthias E

    2015-03-01

    The pharmacology of novel psychoactive substances is mostly unknown. We evaluated the transporter and receptor interaction profiles of a series of para-(4)-substituted amphetamines and pyrovalerone cathinones. We tested the potency of these compounds to inhibit the norepinephrine (NE), dopamine (DA), and serotonin (5-HT) transporters (NET, DAT, and SERT, respectively) using human embryonic kidney 293 cells that express the respective human transporters. We also tested the substance-induced efflux of NE, DA, and 5-HT from monoamine-loaded cells, binding affinities to monoamine receptors, and 5-HT2B receptor activation. Para-(4)-substituted amphetamines, including 4-methylmethcathinone (mephedrone), 4-ethylmethcathinone, 4-fluoroamphetamine, 4-fluoromethamphetamine, 4-fluoromethcatinone (flephedrone), and 4-bromomethcathinone, were relatively more serotonergic (lower DAT:SERT ratio) compared with their analogs amphetamine, methamphetamine, and methcathinone. The 4-methyl, 4-ethyl, and 4-bromo groups resulted in enhanced serotonergic properties compared with the 4-fluoro group. The para-substituted amphetamines released NE and DA. 4-Fluoramphetamine, 4-flouromethamphetamine, 4-methylmethcathinone, and 4-ethylmethcathinone also released 5-HT similarly to 3,4-methylenedioxymethamphetamine. The pyrovalerone cathinones 3,4-methylenedioxypyrovalerone, pyrovalerone, ?-pyrrolidinovalerophenone, 3,4-methylenedioxy-?-pyrrolidinopropiophenone, and 3,4-methylenedioxy-?-pyrrolidinobutiophenone potently inhibited the NET and DAT but not the SERT. Naphyrone was the only pyrovalerone that also inhibited the SERT. The pyrovalerone cathinones did not release monoamines. Most of the para-substituted amphetamines exhibited affinity for the 5-HT2A receptor but no relevant activation of the 5-HT2B receptor. All the cathinones exhibited reduced trace amine-associated receptor 1 binding compared with the non-?-keto-amphetamines. In conclusion, para-substituted amphetamines exhibited enhanced direct and indirect serotonergic agonist properties and are likely associated with more MDMA-like effects. The pharmacological profile of the pyrovalerone cathinones predicts pronounced stimulant effects and high abuse liability. PMID:25624004

  11. Application of Three-Dimensional Models for the Teaching of Time Zones. (Breton Title: Aplicao de Modelos Tridimensionais Para o Ensino de Fusos Horrios.) Aplicacin de Modelos Tridimensionales Para la Enseanza de Husos Horarios

    NASA Astrophysics Data System (ADS)

    Azevedo Sobreira, Paulo Henrique

    2012-07-01

    There are several interesting astronomical topics that must be addressed in the High School and Elementary/Middle School in the disciplines of Geography and of Sciences. Among them, the topic of time zones which is one of the most important to understand the correlation of the Earth's rotation and its implications on daily activities of citizens in local scale, regional and global scales which involve problems of time differences. For the teaching of time zones in the lessons of Geography, for example, there are bi-dimensional representations of thematic maps of world time zones, textbooks and atlas. It happens that teachers face some difficulties to permit its students to view three-dimensionally this astronomical phenomenon from the textbooks available in schools. The aim of this paper is to present two proposals with low-cost materials, which allow the preparation of three-dimensional models for the teaching of time zones. H vrios temas astronmicos interessantes que devem ser trabalhados nos Ensinos Mdio e Fundamental, nas disciplinas de Geografia e de Cincias. Entre eles, o tema dos fusos horrios que um dos mais importantes para se correlacionar a rotao da Terra e suas implicaes nas atividades cotidianas dos cidados em escala local, regional e global, que envolvem problemas de diferenas horrias. Para o ensino dos fusos horrios nas aulas de Geografia, por exemplo, h representaes bidimensionais de mapas temticos de fusos horrios mundiais, nos livros didticos e nos atlas. Ocorre que os professores enfrentam algumas dificuldades para possibilitar aos seus alunos a viso tridimensional deste fenmeno astronmico, a partir dos materiais didticos disponveis nas escolas. O objetivo deste trabalho apresentar duas propostas para a confeco de materiais de baixo custo, que possibilitem a elaborao de modelos tridimensionais para o ensino dos fusos horrios. Hay algunos temas astronmicos interesantes que se deben trabajar en la enseanza media y bsica, en las asignaturas de Geografa y de Ciencias. Entre ellos, el de los husos horarios que es uno de los ms importantes para correlacionar la rotacin de la Tierra y sus implicaciones en las actividades diarias de los ciudadanos en escala local, regional y global, y en general, cuestiones que implican problemas de las diferencias horarias. Para la enseanza de los husos horarios en las clases de Geografa, por ejemplo, hay representaciones bidimensionales de los mapas temticos de husos horarios mundiales, en libros y atlas didcticos. Sin embargo, los profesores se enfrentan con algunas dificultades para hacer posible que sus alumnos tengan una visin tridimensional de este fenmeno astronmico, usando los materiales didcticos disponibles en las escuelas. El objetivo de este trabajo es presentar la construccin de dos propuestas de materiales de bajo costo, que hacen posible la elaboracin de modelos tridimensionales para la enseanza de los husos horarios.

  12. Ortho/para hydrogen converter for rapid deposition matrix isolation spectroscopy

    NASA Astrophysics Data System (ADS)

    Tam, Simon; Fajardo, Mario E.

    1999-04-01

    We describe the construction and operation of a catalyst-bed type device for precooling and equilibrating the ortho/para composition of a hydrogen gas flow. We use this device to vapor deposit millimeters thick cryogenic parahydrogen (pH2) solids which are remarkably transparent [M. E. Fajardo and S. Tam, J. Chem. Phys. 108, 4237 (1998)]. Infrared absorption spectra of solids deposited at pH2 flow rates up to 290 mmol/h (solid thickness growth rates up to 75 ?m/min indicate a residual orthohydrogen (oH2) content of less than 0.01%. Gas phase thermal conductivity measurements indicate a residual oH2 content of 0(-0+5)% for flow rates up to 1.9 mol/h. These pH2 solids can be doped readily by simple codeposition of various impurities produced by any of the numerous dopant sources developed in previous matrix isolation spectroscopy (MIS) studies. The long achievable path lengths, and the desirable properties of pH2 as a matrix host, will enable significant new fundamental and practical applications for MIS.

  13. [Psychometric properties of the Escala de Autoeficacia para el Afrontamiento del Estrs (EAEAE)].

    PubMed

    Godoy Izquierdo, Dbora; Godoy Garca, Juan F; Lpez-Chicheri Garca, Isabel; Martnez Delgado, Antonio; Gutirrez Jimnez, Susana; Vzquez Vzquez, Luisa

    2008-02-01

    This paper presents the theoretical construct of and an instrument for its assessment, the Escala de Autoeficacia para el Afrontamiento del Estrs (EAEAE; in English, Coping with Stress Self-Efficacy Scale), as well as the results obtained concerning its psychometric properties from an adult population. 812 individuals, aged 18 to 64 years old ( M = 26.46, SD = 9.93, 62.6% females and 37.4% males), recruited from various contexts, participated in this study. Participants completed the EAEAE along with other measures of constructs theoretically related to this specific self-efficacy. The EAEAE shows appropriate reliability in its complete form as well as in its two subscales of Efficacy Expectations and Outcome Expectations, and adequate factorial construct validity (which reveals the bi-dimensionality of the instrument), and convergent validity with the remaining measures. The characteristics of brevity and ease of application of the scale, in addition to its adequate psychometric properties, indicate that the EAEAE is an appropriate tool to assess and investigate coping with stress self-efficacy in research as well as clinical settings. PMID:18206079

  14. Defect-induced effects on carrier migration through one-dimensional poly(para-phenylenevinylene) chains

    NASA Astrophysics Data System (ADS)

    Zoppi, L.; Calzolari, A.; Ruini, A.; Ferretti, A.; Caldas, M. J.

    2008-10-01

    Defects in one-dimensional (1D) systems can be intrinsically distinct from its three-dimensional counterparts, and polymer films are good candidates for showing both extremes that are difficult to individuate in the experimental data. We study theoretically the impact of simple hydrogen and oxygen defects on the electron transport properties of one-dimensional poly(para-phenylenevinylene) chains through a multiscale technique, starting from classical structural simulations for crystalline films to extensive ab initio calculations within density functional theory for the defects in single crystalline-constrained chains. The most disruptive effect on carrier transport comes from conjugation breaking imposed by the overcoordination of a carbon atom in the vinyl group independently from the chemical nature of the defect. The particular case of the [C=O] (keto-defect) shows in addition unexpected electron-hole separation, suggesting that the experimentally detected photoluminescence bleaching and photoconductivity enhancement could be due to exciton dissociation caused by the 1D characteristics of the defect.

  15. Performance of three different anodes in electrochemical degradation of 4-para-nitrophenol.

    PubMed

    Murugaesan, Pramila; Aravind, Priyadharshini; Guruswamy Muniyandi, Neelavannan; Kandasamy, Subramanian

    2015-10-01

    In recent years, removal of pollutants from wastewater by electrochemical oxidation has become an attractive method. The present investigation deals with the degradation of 4-para-nitrophenol (4-PNP) by electrochemical oxidation using three different anodes, namely TiO2-RuO2-IrO2/Ti (titanium substrate insoluble anode - TSIA)), IrO2-PbO2/Ti and graphite. Electrochemical oxidation of 4-PNP was carried out employing sodium chloride as the supporting electrolyte, at pH 7 with a current density of 15?mA/cm(2). The degradation of 4-PNP by electro-oxidation was characterized by ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy and high-performance liquid chromatography. The performance efficiency and current efficiency of the three anodic materials in this study were evaluated by chemical oxygen demand (COD). Comparisons of energy consumption for the three anodes employed were also calculated. Among electrodes investigated, the IrO2-PbO2/Ti electrode resulted in 98% of COD removal in 30?min comparatively at a less energy consumption of 1??10(-2)?kWh?m(-3), depicting its higher performance efficiency in 4-PNP degradation. PMID:25885262

  16. Correlations of intra- and intermolecular dynamics and structure in liquid para -hydrogen

    NASA Astrophysics Data System (ADS)

    Hyeon-Deuk, Kim; Ando, Koji

    2014-10-01

    Although hydrogen is the simplest of all molecular species, its nuclear quantum effects dominate the structure and thermodynamical properties of the condensed phases. With a recently developed nonempirical quantum molecular dynamics simulation method, we present intuitive understandings of real-time dynamics of each para -hydrogen(p -H2) molecule in the liquid phase including its H-H bond vibrations, molecular orientations, and librational motions. The short- and long-living memories of angular dynamics we found suggest that p -H2 should be described as a librating nonspherical diatomic molecule and can be characterized by two typical dynamics: kinetic motions inside a solvation shell and diffusive dynamics out of the shell. The real-time trajectory reveals that structural rearrangements of a p -H2 molecule such as breakout from a solvation shell significantly correlate with its intramolecular structure and fluctuations. The H-H bond power spectra completely fitted by two functions also indicate that liquid p -H2 has two typical structures. The condensed-phase effects on shifts and broadening of H-H bond stretching frequencies, intrinsic librational dynamics, and molecular orientational distributions are computationally demonstrated and physically rationalized.

  17. Long-Range Ruthenium-Amine Electronic Communication through the para-Oligophenylene Wire

    PubMed Central

    Shen, Jun-Jian; Zhong, Yu-Wu

    2015-01-01

    The studies of long-range electronic communication are hampered by solubility and potential-splitting issues. A hybridized redox-asymmetry method using a combination of organic and inorganic redox species is proposed and exemplified to overcome these two issues. Complexes 1(PF6)6(PF6) (from short to long in length) with the organic redox-active amine and inorganic cyclometalated ruthenium termini bridged by the para-oligophenylene wire have been prepared. Complex 6 has the longest Ru-amine geometrical distance of 27.85?. Complexes 3(PF6) and 4(PF6) show lamellar crystal packing on the basis of a head-to-tail anti-parallelly aligned dimeric structure. Two redox waves are observed for all complexes in the potential region between +0.2 and +0.9?V vs Ag/AgCl. The electrochemical potential splitting is 410, 220, 143, 112, 107, and 105 mV for 1(PF6) through 6(PF6), respectively. Ruthenium (+2) to aminium (N+) charge transfer transitions have been identified for the odd-electron compounds 12+62+ by spectroelectrochemical measurements. The electronic communication between amine and ruthenium decreases exponentially with a decay slope of ?0.137??1. DFT calculations have been performed to complement these experimental results. PMID:26344929

  18. Dynamics and lithium binding energies of polyelectrolytes based on functionalized poly(para-phenylene terephthalamide).

    PubMed

    Grozema, F C; Best, A S; van Eijck, L; Stride, J; Kearley, G J; de Leeuw, S W; Picken, S J

    2005-04-28

    Polyelectrolyte materials are an interesting class of electrolytes for use in fuel cell and battery applications. Poly(para-phenylene terephthalamide) (PPTA, Kevlar) is a liquid crystalline polymer that, when sulfonated, is a polyelectrolyte that exhibits moderate ion conductivity at elevated temperatures. In this work, quasi-elastic neutron scattering (QENS) experiments were performed to gain insight into the effect of the presence of lithium counterions on the chain dynamics in the material. It was found that the addition of lithium ions decreases the dynamics of the chains. Additionally, the binding of lithium ions to the sulfonic acids groups was investigated by density functional theory (DFT) calculations. It was found that the local surroundings of the sulfonic acid group have very little effect on the lithium-ion binding energy. Binding energies for a variety of different systems were all calculated to be around 150 kcal/mol. The DFT calculations also show the existence of a structure in which a single lithium ion interacts with two sulfonic acid moieties on different chains. The formation of such "electrostatic cross-links" is believed to be the source of the increased tendency to aggregate and the reduced dynamics in the presence of lithium ions. PMID:16851895

  19. Searching for auxetics with DYNA3D and ParaDyn

    NASA Astrophysics Data System (ADS)

    Hoover, Wm. G.; Hoover, C. G.

    2005-03-01

    The present special issue of physica status solidi (b), guest-edited by Krzysztof W. Wojciechowski, Andrew Alderson, Arkadiusz Braka, and Kim L. Alderson, is dedicated to Auxetics and Related Systems - materials which exhibit negative Poisson's ratio behaviour. Most papers were presented at a workshop which was held in Pozna-Bdlewo, 27-30 June 2004.In our Editor's Choice [1] novel simulations with a parallel finite element program, ParaDyn, have been conducted to study the formation of auxetic materials. Structures composed of either brick elements (hexahedra) or shell elements are constructed in a regular array of panels. These structures are compressed and relaxed to form an initial state for an auxetic (foam-like) material. The foam structure shown is composed of 208896 shell elements arranged in four by four panels. Applying a uniaxial compression to this structure characterizes the material behaviour of the lateral surfaces as normal (expanding) or auxetic (compressing).The first author, William G. Hoover, has been working in areas such as statistical and applied mechanics, nonlinear and molecular dynamics and is now pursuing, as he states on his own webpage, an active retired research career as Professor Emeritus of UC Davis.

  20. Development and Validation of the Escala de Actitudes Emprendedoras para Estudiantes (EAEE).

    PubMed

    Oliver, Amparo; Galiana, Laura

    2015-01-01

    During the last few years, entrepreneurship has gained an important role in many economic and social policies, with the consequent growth of entrepreneurial research in many social areas. However, in the Spanish psychometric context, there is not an updated scale including recent contributions to entrepreneurship attitudes literature. The aim of this study is to present and validate a new scale named Escala de Actitudes Emprendedoras para Estudiantes-EAEE, (Entrepreneurial Attitudes Scale for Students, EASS), in two samples of high school and university Spanish students. Data comes from a cross-sectional survey of 524 high school and undergraduate students, from Valencia (Spain). Two confirmatory factor analyses (CFAs) were estimated, together with reliability and validity evidence of the scale. Results offered evidence of the adequate psychometric properties of the EASS. The CFAs showed overall and analytical adequate fit indexes (? 2 (120) = 163.19 (p < .01), GFI = .906, CFI = .959, SRMR = .044, RMSEA = .040 [CI .022-.054]); reliability indices of the entrepreneurial attitudes were appropriate for most of the entrepreneurial attitudes (? were between .63 and .87 for the different dimensions); and external evidence relating entrepreneurial dimensions to personality traits was similar to in previous studies. The scale could be a useful instrument both for previous diagnosis and effectiveness assessment of programs on entrepreneurship promotion. PMID:26055696

  1. Mini-mastoidectoma para anastomosis hipogloso-facial con seccin parcial del nervio hipogloso

    PubMed Central

    Campero, lvaro; Ajler, Pablo; Socolovsky, Mariano; Martins, Carolina; Rhoton, Albert

    2012-01-01

    Introduccin: La anastomosis hipogloso-facial es la tcnica de eleccin para la reparacin de la parlisis facial cuando no se dispone de un cabo proximal sano del nervio facial. La tcnica de anastomosis mediante fresado mastoideo y seccin parcial del hipogloso minimiza la atrofia lingual sin sacrificar resultados a nivel facial. Mtodo: La porcin mastoidea del nervio facial transcurre por la pared anterior de la AM, a un promedio de 18+/-3 mm de profundidad respecto de la pared lateral. Se debe reconocer la cresta supramastoidea, desde la cual se marca una lnea vertical paralela al eje mayor de la AM, 1 cm por detrs de la pared posterior del CAE El fresado se comienza desde la lnea medio mastoidea hasta la pared posterior del CAE. Una vez encontrado el nervio facial en el tercio medio del canal mastoideo, el mismo es seguido hacia proximal y distal. Resultados: El abordaje descripto permite acceder al nervio facial intratemporal en su porcin mastoidea, y efectuar un fresado seo sin poner en riesgo al nervio o a estructuras vasculares cercanas. Se trata de un procedimiento tcnicamente ms sencillo que los abordajes amplios habitualmente utilizados al hueso temporal; no obstante su uso debe ser restringido mayormente a la anastomosis hipogloso-facial. Conclusin: Esta es una tcnica relativamente sencilla, que puede ser reproducida por cirujanos sin mayor experiencia en el tema, luego de su paso por el laboratorio de anatoma. PMID:23596555

  2. Mass gathering preparedness: the experience of the Athens 2004 Olympic and Para-Olympic Games.

    PubMed

    Hadjichristodoulou, Christos; Mouchtouri, Varvara; Soteriades, Elpidoforos S; Vaitsi, Vasiliki; Kolonia, Virginia; Vasilogiannacopoulos, Antonios P; Kremastinou, Jeni

    2005-05-01

    Planning for environmental health management of the Athens 2004 Olympic Games included assessment of the capacity and deficiencies of relevant public health agencies in Athens and the other four Olympic cities with 17 detailed questionnaires. Different estimates of the expected number of visitors were made on the basis of experience from previous Olympic Games. Potential public health risks were identified and prioritized. A number of deficiencies in personnel, resources, training, and coordination were identified in most agencies. One hundred and ninety-six environmental health inspectors were expected to work during the Olympic period. Around 18,000 athletes and escorts from 201 countries were expected to participate in the Olympic Games and 7,000 to participate in the Para-Olympic Games. Three different scenarios regarding the number of expected visitors were explored; the most probable estimate being 1,950,000 visitors. Foodborne diseases, waterborne diseases, and heat-related illnesses were considered of high priority during the Olympic period, as were traffic accidents. The Olympic Games are a difficult assignment that demands extensive planning, appropriate resources, and timely reporting and coordination among the various public health agencies. PMID:15957323

  3. Uso de Sustancias en Mujeres con Desventaja Social: Riesgo para el Contagio de VIH/SIDA

    PubMed Central

    Cianelli, R.; Ferrer, L; Bernales, M.; Miner, S.; Irarrzabal, L.; Molina, Y.

    2009-01-01

    Antecedentes La caracterizacin epidemiolgica en Chile apunta a feminizacin, pauperizacin y heterosexualizacin de la epidemia del VIH, lo que implica un mayor riesgo para las mujeres en desventaja social. Si a esto se suma la utilizacin de sustancias, la vulnerabilidad de este grupo frente al VIH/SIDA aumenta. Objetivo Describir el uso de sustancias en mujeres con desventaja social e identificar factores de riesgo de contagio de VIH, asociados a este consumo. Material y Mtodo 52 mujeres fueron entrevistadas como parte del proyecto Testeando una intervencin en prevencin de VIH/SIDA en mujeres chilenas GRANT # RO1 TW 006977. Se describen variables sociodemogrficas y de consumo de sustancias a travs de estadsticas descriptivas y se analiza la relacin entre variables a travs de pruebas de correlacin. Resultados Los resultados indican un perfil sociodemogrfico que sita a las mujeres en situacin de vulnerabilidad frente al contagio de VIH/SIDA, con alto ndice de uso de sustancias que acenta el riesgo. Conclusiones Los hallazgos apuntan a la necesidad de considerar intervenciones que se enfoquen en la prevencin de VIH en mujeres, abordando los riesgos asociados al consumo de sustancias. PMID:21197380

  4. Para-toluenesulfonamide induces tongue squamous cell carcinoma cell death through disturbing lysosomal stability

    PubMed Central

    Liu, Zhe; Liang, Chenyuan; Zhang, Zhuoyuan; Pan, Jian; Xia, Hui; Zhong, Nanshan

    2015-01-01

    Para-toluenesulfonamide (PTS) has been implicated with anticancer effects against a variety of tumors. In the present study, we investigated the inhibitory effects of PTS on tongue squamous cell carcinoma (Tca-8113) and explored the lysosomal and mitochondrial changes after PTS treatment in vitro. High-performance liquid chromatography showed that PTS selectively accumulated in Tca-8113 cells with a relatively low concentration in normal fibroblasts. Next, the effects of PTS on cell viability, invasion, and cell death were determined. PTS significantly inhibited Tca-8113 cells viability and invasive ability with increased cancer cell death. Flow cytometric analysis and the lactate dehydrogenase release assay showed that PTS induced cancer cell death by activating apoptosis and necrosis simultaneously. Morphological changes, such as cellular shrinkage, nuclear condensation as well as formation of apoptotic body and secondary lysosomes, were observed, indicating that PTS might induce cell death through disturbing lysosomal stability. Lysosomal integrity assay and western blot showed that PTS increased lysosomal membrane permeabilization associated with activation of lysosomal cathepsin B. Finally, PTS was shown to inhibit ATP biosynthesis and induce the release of mitochondrial cytochrome c. Therefore, our findings provide a novel insight into the use of PTS in cancer therapy. PMID:26302210

  5. LabVIEW-based control software for para-hydrogen induced polarization instrumentation.

    PubMed

    Agraz, Jose; Grunfeld, Alexander; Li, Debiao; Cunningham, Karl; Willey, Cindy; Pozos, Robert; Wagner, Shawn

    2014-04-01

    The elucidation of cell metabolic mechanisms is the modern underpinning of the diagnosis, treatment, and in some cases the prevention of disease. Para-Hydrogen induced polarization (PHIP) enhances magnetic resonance imaging (MRI) signals over 10,000 fold, allowing for the MRI of cell metabolic mechanisms. This signal enhancement is the result of hyperpolarizing endogenous substances used as contrast agents during imaging. PHIP instrumentation hyperpolarizes Carbon-13 ((13)C) based substances using a process requiring control of a number of factors: chemical reaction timing, gas flow, monitoring of a static magnetic field (Bo), radio frequency (RF) irradiation timing, reaction temperature, and gas pressures. Current PHIP instruments manually control the hyperpolarization process resulting in the lack of the precise control of factors listed above, resulting in non-reproducible results. We discuss the design and implementation of a LabVIEW based computer program that automatically and precisely controls the delivery and manipulation of gases and samples, monitoring gas pressures, environmental temperature, and RF sample irradiation. We show that the automated control over the hyperpolarization process results in the hyperpolarization of hydroxyethylpropionate. The implementation of this software provides the fast prototyping of PHIP instrumentation for the evaluation of a myriad of (13)C based endogenous contrast agents used in molecular imaging. PMID:24784636

  6. From clusters to fibers: Parameters for discontinuous para-hexaphenylene thin film growth

    SciTech Connect

    Kankate, Laxman; Balzer, Frank; Niehus, Horst; Rubahn, Horst-Guenter

    2008-02-28

    All relevant steps of discontinuous thin film growth of para-hexaphenylene on muscovite mica (0 0 1) from wetting layer over small and large clusters to nanofibers are observed and investigated in detail by a combined polarized fluorescence and atomic force microscopy study. From a variation of film thickness and surface temperature, we determine effective activation energies for cluster growth of 0.17 eV, for nanofiber length growth of 0.46 eV, for width growth of 0.19 eV, and for height growth of 0.07 eV. The corresponding exponential prefactors for the nanofiber growth are 1x10{sup 9}, 6x10{sup 4}, and 3x10{sup 2} nm. Polarized fluorescence studies reveal that nanofibers grow along the grooves of the mica surface and that they do not change direction if they cross an even number of mica surface steps, while they change direction by 120 deg. for an odd number of steps. These results are taken as an input for a model of the unidirectional growth process on mica. Absolute parameters allowing one to grow nanofibers of predetermined morphology via organic molecular beam epitaxy are also given.

  7. LabVIEW-based control software for para-hydrogen induced polarization instrumentation

    SciTech Connect

    Agraz, Jose Grunfeld, Alexander; Li, Debiao; BIRI, Cedars Sinai Medical Center, West Hollywood, California 90048 ; Cunningham, Karl; Willey, Cindy; Pozos, Robert; Wagner, Shawn

    2014-04-15

    The elucidation of cell metabolic mechanisms is the modern underpinning of the diagnosis, treatment, and in some cases the prevention of disease. Para-Hydrogen induced polarization (PHIP) enhances magnetic resonance imaging (MRI) signals over 10000 fold, allowing for the MRI of cell metabolic mechanisms. This signal enhancement is the result of hyperpolarizing endogenous substances used as contrast agents during imaging. PHIP instrumentation hyperpolarizes Carbon-13 ({sup 13}C) based substances using a process requiring control of a number of factors: chemical reaction timing, gas flow, monitoring of a static magnetic field (B{sub o}), radio frequency (RF) irradiation timing, reaction temperature, and gas pressures. Current PHIP instruments manually control the hyperpolarization process resulting in the lack of the precise control of factors listed above, resulting in non-reproducible results. We discuss the design and implementation of a LabVIEW based computer program that automatically and precisely controls the delivery and manipulation of gases and samples, monitoring gas pressures, environmental temperature, and RF sample irradiation. We show that the automated control over the hyperpolarization process results in the hyperpolarization of hydroxyethylpropionate. The implementation of this software provides the fast prototyping of PHIP instrumentation for the evaluation of a myriad of {sup 13}C based endogenous contrast agents used in molecular imaging.

  8. Origin of the low-energy emission band in epitaxially grown para-sexiphenyl nanocrystallites

    SciTech Connect

    Kadashchuk, A.; Schols, S.; Heremans, P.; Skryshevski, Yu.; Piryatinski, Yu.; Beinik, I.; Teichert, C.; Hernandez-Sosa, G.; Sitter, H.; Andreev, A.; Frank, P.; Winkler, A.

    2009-02-28

    A comparative study of steady-state and time-resolved photoluminescence of para-sexiphenyl (PSP) films grown by organic molecular beam epitaxy (OMBE) and hot wall epitaxy (HWE) under comparable conditions is presented. Using different template substrates [mica(001) and KCl(001) surfaces] as well as different OMBE growth conditions has enabled us to vary greatly the morphology of the PSP crystallites while keeping their chemical structure virtually untouched. We prove that the broad redshifted emission band has a structure-related origin rather than being due to monomolecular oxidative defects. We conclude that the growth conditions and type of template substrate impacts substantially on the film morphology (measured by atomic force microscopy) and emission properties of the PSP films. The relative intensity of the defect emission band observed in the delayed spectra was found to correlate with the structural quality of PSP crystallites. In particular, the defect emission has been found to be drastically suppressed when (i) a KCl template substrate was used instead of mica in HWE-grown films, and (ii) in the OMBE-grown films dominated by growth mounds composed of upright standing molecules as opposed to the films consisting of crystallites formed by molecules lying parallel to the substrate.

  9. Para-cresyl sulfate acutely impairs vascular reactivity and induces vascular remodeling.

    PubMed

    Gross, Priscilla; Massy, Ziad A; Henaut, Lucie; Boudot, Cdric; Cagnard, Joanna; March, Ccilia; Kamel, Sad; Drueke, Tilman B; Six, Isabelle

    2015-12-01

    Chronic kidney disease (CKD) is characterized by vascular remodeling and the retention of uremic toxins, several of which are independently associated with the high cardiovascular mortality rate in CKD patients. Whether the association between these uremic toxins and cardiovascular mortality is due to induction of vascular dysfunction and resulting vascular remodeling remains to be determined. This study evaluates the effects of para-cresyl sulfate (PCS), a newly identified uremic toxin, on vascular function and remodeling. PCS acutely induced oxidative stress in both endothelial and vascular smooth muscle cells, with a maximal effect at 0.15 mM, corresponding to the mean "uremic" concentration found in dialysis patients. PCS significantly increased within 30 min phenylephrine-induced contraction of mouse thoracic aorta, through direct activation of rho-kinase, independently of oxidative stress induction, as demonstrated by the capacity of rho-kinase inhibitor Y-27632 to abolish this effect. After exposure of the aorta to PCS for 48 h, we observed inward eutrophic remodeling, a hallmark of uremic vasculopathy characterized by a reduction of the area of both lumen and media, with unchanged media/lumen ratio. In conclusion, elevated PCS concentrations such as those observed in CKD patients, by promoting both vascular dysfunction and vascular remodeling, may contribute to the development of hypertension and to cardiovascular mortality in CKD. PMID:25899466

  10. Creation and evolution of net proton hyperpolarization arising from para-hydrogenation.

    PubMed

    Reineri, Francesca; Bouguet-Bonnet, Sabine; Canet, Daniel

    2011-05-01

    When a hydrogenation reaction is carried out with gaseous hydrogen enriched in its para- isomer in the earth magnetic field (prior to adiabatic insertion of the sample in the NMR magnet), enhanced proton longitudinal order (represented by 2I(z)(A)I(z)(B)) is created but also difference of enhanced polarizations (I(z)(A)-I(z)(B)). In a first part, it is shown theoretically and experimentally that the longitudinal relaxation time of this polarization difference is roughly twice the ones of individual polarizations. The second part is devoted to a pulse sequence designed for transforming this difference into net hyperpolarization. The evolution of this global hyperpolarization is studied experimentally in a third part and it is observed that a fraction of hyperpolarization possesses an effective longitudinal relaxation time similar to the one of the initial polarization difference. Those experimental results are interpreted by numerical calculations based on Solomon-type equations including the longitudinal order and possibly dipolar-csa cross correlation rates. PMID:21402486

  11. Force field of para- and metabenzyne diradicals: A multireference coupled-cluster study

    NASA Astrophysics Data System (ADS)

    Li, Xiangzhu; Paldus, Josef

    2010-03-01

    The reduced multireference (RMR) coupled-cluster (CC) method with singles and doubles (RMR CCSD) that exploits a modest size MR CISD wave function as an external source for a small subset of the most important (primary) triples and quadruples to account for quasidegeneracy due to a MR nature of the states considered, as well as its RMR CCSD(T) version corrected for the secondary triples, are employed to compute fundamental vibrational frequencies for the para- and metabenzene diradicals. A comparison is made with the available experimental data and with other methods, namely, the state selective or Mukherjee CCSD and completely renormalized, size-extensive version of CCSD(T), the so-called CR-CC(2,3), methods. Both the restricted Hartree-Fock and multiconfiguration self-consistent-field (MCSCF) molecular orbitals (MOs) are employed. The four-reference RMR CCSD using MCSCF MOs gives particularly satisfactory results. The breakdown of CCSD(T) and shortcomings of some other approaches are pointed out and the role of invariance with respect to MO rotation is analyzed. Correlation with triplet-singlet splittings is also pointed out.

  12. The Protonation Site of para-Dimethylaminobenzoic Acid Using Atmospheric Pressure Ionization Methods

    NASA Astrophysics Data System (ADS)

    Chai, Yunfeng; Weng, Guofeng; Shen, Shanshan; Sun, Cuirong; Pan, Yuanjiang

    2015-04-01

    The protonation site of para-dimethylaminobenzoic acid ( p-DMABA) was investigated using atmospheric pressure ionization methods (ESI and APCI) coupled with collision-induced dissociation (CID), nuclear magnetic resonance (NMR), and computational chemistry. Theoretical calculations and NMR experiments indicate that the dimethyl amino group is the preferred site of protonation both in the gas phase and aqueous solution. Protonation of p-DMABA occurs at the nitrogen atom by ESI independent of the solvents and other operation conditions under typical thermodynamic control. However, APCI produces a mixture of the nitrogen- and carbonyl oxygen-protonated p-DMABA when aprotic organic solvents (acetonitrile, acetone, and tetrahydrofuran) are used, exhibiting evident kinetic characteristics of protonation. But using protic organic solvents (methanol, ethanol, and isopropanol) in APCI still leads to the formation of thermodynamically stable N-protonated p-DMABA. These structural assignments were based on the different CID behavior of the N- and O-protonated p-DMABA. The losses of methyl radical and water are the diagnostic fragmentations of the N- and O-protonated p-DMABA, respectively. In addition, the N-protonated p-DMABA is more stable than the O-protonated p-DMABA in CID revealed by energy resolved experiments and theoretical calculations.

  13. The Degree of Ergodicity of ortho- and para-Aminobenzonitrile in an Electric Field.

    PubMed

    Pittman, S M; Heller, E J

    2015-10-22

    We study the dynamics of the two molecules ortho-aminobenzonitrile (OABN) and para-aminobenzonitrile (PABN). They are structural isomers, with differing asymmetries and dipole moments. In this paper, we show that the dynamics of the system strongly depends on the region of phase space of the initial rotational state, the asymmetry of the molecule, and on the direction of the dipole. We also show that the ergodicity of the system varies gradually with energy, except where the rotational energy of the initial state is much less than the Stark interaction. In this regime, the projection of the dipole along the lab-frame z-axis varies linearly with increasing energy and follows the microcanonical ergodic estimate. Both molecules are far from full chaos for total angular momentum quanta J ? [0,45]. However, the initial rotational states in OABN access much more of the available phase space than in PABN. We show that this is a likely cause for the experimental discrepancies in molecular beam deflection experiments. PMID:26393275

  14. ParaText : scalable solutions for processing and searching very large document collections : final LDRD report.

    SciTech Connect

    Crossno, Patricia Joyce; Dunlavy, Daniel M.; Stanton, Eric T.; Shead, Timothy M.

    2010-09-01

    This report is a summary of the accomplishments of the 'Scalable Solutions for Processing and Searching Very Large Document Collections' LDRD, which ran from FY08 through FY10. Our goal was to investigate scalable text analysis; specifically, methods for information retrieval and visualization that could scale to extremely large document collections. Towards that end, we designed, implemented, and demonstrated a scalable framework for text analysis - ParaText - as a major project deliverable. Further, we demonstrated the benefits of using visual analysis in text analysis algorithm development, improved performance of heterogeneous ensemble models in data classification problems, and the advantages of information theoretic methods in user analysis and interpretation in cross language information retrieval. The project involved 5 members of the technical staff and 3 summer interns (including one who worked two summers). It resulted in a total of 14 publications, 3 new software libraries (2 open source and 1 internal to Sandia), several new end-user software applications, and over 20 presentations. Several follow-on projects have already begun or will start in FY11, with additional projects currently in proposal.

  15. Cobalt-Schiff base complex catalyzed oxidation of para-substituted phenolics. Preparation of benzoquinones

    SciTech Connect

    Bozell, J.J.; Hames, B.R.; Dimmel, D.R.

    1995-04-21

    Para-substituted phenolics, serving as models for lignin (a renewable source of carbon), are oxidized to the corresponding benzoquinone with oxygen in the presence of catalytic amounts of Co-Schiff base complexes. The reaction products observed depend on the structure of the catalyst. The 5-coordinate catalysts (pyridine)[bis(salicylidene)ethylenediamine]cobalt[(pyr)Co(salen)]and[bis(salicylideneamino)ethylamine]cobalt [Co(n-Me salpr)] convert syringyl alcohol (3,5-dimethoxy-4-hydroxybenzyl alcohol) to 2,6-dimethoxybenzoquinone in high yield. In contrast, syringaldehyde (3,5-dimethoxy-4-hydroxybenzaldehyde) is unreactive toward these catalysts. However, the 4-coordinate Co(salen) converts syringaldehyde to 2,6-dimethoxybenzoiquinone in 72% isolated yield. Phenols bearing a single methoxy group on the ring are unreactive toward any catalyst in MeOH. However, vanillyl alcohol (3-methoxy-4-hydroxybenzyl alcohol) is converted to 2-methoxybenzo-quinone with Co(N-Me salpr) and oxygen in 43% yield in CH{sub 2}Cl{sub 2} and 58% yield in CH{sub 2}Cl{sub 2} in the presence of 1% CuCl{sub 2}. The success of the oxidations appears to be related to the ease of removal of the phenolic hydrogen by the Co/O{sub 2} complex. Competitive deactivation of the catalyst occurs with substrates of lower reactivity. 84 tabs.

  16. Long-Range Ruthenium-Amine Electronic Communication through the para-Oligophenylene Wire

    NASA Astrophysics Data System (ADS)

    Shen, Jun-Jian; Zhong, Yu-Wu

    2015-09-01

    The studies of long-range electronic communication are hampered by solubility and potential-splitting issues. A hybridized redox-asymmetry method using a combination of organic and inorganic redox species is proposed and exemplified to overcome these two issues. Complexes 1(PF6)-6(PF6) (from short to long in length) with the organic redox-active amine and inorganic cyclometalated ruthenium termini bridged by the para-oligophenylene wire have been prepared. Complex 6 has the longest Ru-amine geometrical distance of 27.85?. Complexes 3(PF6) and 4(PF6) show lamellar crystal packing on the basis of a head-to-tail anti-parallelly aligned dimeric structure. Two redox waves are observed for all complexes in the potential region between +0.2 and +0.9?V vs Ag/AgCl. The electrochemical potential splitting is 410, 220, 143, 112, 107, and 105 mV for 1(PF6) through 6(PF6), respectively. Ruthenium (+2) to aminium (N+) charge transfer transitions have been identified for the odd-electron compounds 12+-62+ by spectroelectrochemical measurements. The electronic communication between amine and ruthenium decreases exponentially with a decay slope of -0.137?-1. DFT calculations have been performed to complement these experimental results.

  17. Taxas de eventos para as fontes astrofsicas do detector Mario Schenberg

    NASA Astrophysics Data System (ADS)

    Castro, C. S.; Araujo, J. C. N.; Miranda, O. D.; Aguiar, O. D.

    2003-08-01

    O detector de ondas gravitacionais Mario Schenberg ser sensvel a sinais que cheguem Terra com amplitude h~10-21 e dentro da faixa em frequncias que varia de 3,0 a 3,4 kHz. As principais fontes astrofsicas em condies de gerar um sinal detectvel pela antena Schenberg so: colapsos estelares que produzam eventos do tipo supernova; instabilidades hidrodinmicas em estrelas de nutrons; excitao dos modos fludo (modos f) de estrelas de nutrons; excitao dos primeiros modos quadrupolares de buracos negros com massa ~ 3,8 M; coalescncias de estrelas de nutrons e buracos negros em sistemas binrios e, ainda, espiralaes de mini-buracos negros. Neste trabalho ns determinamos as taxas de eventos para o Schenberg associadas a dois tipos de fontes: atravs da de-excitao dos modos f de estrelas de nutrons e atravs da coalescncia de mini-buracos negros de 0,5 M (que atualmente tm sido colocados como possveis candidatos a objetos massivos do halo Galctico). Ns mostramos que esses tipos de fontes podero produzir sinais em ondas gravitacionais com uma taxa em torno de um evento por ano dentro da banda do Schenberg.

  18. AUTORIZACIN PARA LA REVELACIN DE LA INFORMACIN DE SALUD CONFORME CON LA LEY HIPAA Nombre del paciente Fecha de nacimiento Numero del Expediente

    E-print Network

    Columbia University

    AUTORIZACIN PARA LA REVELACIN DE LA INFORMACIN DE SALUD CONFORME CON LA LEY HIPAA Nombre del, solicito(a) que la informacin de salud con respect a mi cuidado y tratamiento se revele segn se establece relacionada con el USO EXCESIVO DE ALCOHOL Y CONSUMO DE DROGRAS, TRATAMIENTO PARA LA SALUD MENTAL, except las

  19. PROGRAMA DE CAPACITACIN Y EDUCACIN EN SEGURIDAD Y SALUD PARA TRABAJADORES COMISIN DE SALUD Y SEGURIDAD Y DE COMPENSACIN AL TRABAJADOR

    E-print Network

    Leistikow, Bruce N.

    PROGRAMA DE CAPACITACIN Y EDUCACIN EN SEGURIDAD Y SALUD PARA TRABAJADORES COMISIN DE SALUD Y Lecheras ha sido desarrollado por el Centro Occidental de Salud y Seguridad Agrcola (WCAHS por sus siglas Educacin en Salud y Seguridad para Trabajadores (WOSHTEP por sus siglas en ingls). WOSHTEP es administrado

  20. Middleware para Ger^encia de Energia em Clusters Web Dorgival Guedes , Wagner Meira Jr. , Di^ego Nogueira , Rodrigo Pereira

    E-print Network

    Guedes, Dorgival

    MPM: Middleware para Ger^encia de Energia em Clusters Web Dorgival Guedes , Wagner Meira Jr. , Di extra de energia. O desenvolvimento de aplicac¸ ~oes capazes de geren- ciar esse consumo requer formas desempenho com o controle de energia. Para avaliar a efic´acia da soluc¸~ao verificamos o seu funcionamento

  1. National Aeronautics and Space Administration www.nasa.gov Vamos a Estudiar a Marte Seccin para el Estudiante 1/13

    E-print Network

    Waliser, Duane E.

    National Aeronautics and Space Administration www.nasa.gov Vamos a Estudiar a Marte Seccin para el Estudiante 1/13 VAMOS A ESTUDIAR A MARTE Seccin para el Estudiante Nombre del Estudiante exploraciones robticas de Marte. Durante esta leccin formulars una pregunta original basndose en las

  2. EDITAL N 027/2015 do Processo seletivo para o curso de Doutorado Direto do Programa de Ps-Graduao em Meteorologia do Instituto de Astronomia,

    E-print Network

    Neto, Gasto Bierrenbach Lima

    EDITAL N 027/2015 do Processo seletivo para o curso de Doutorado Direto do Programa de Ps inscries para a seleo de candidatos ao curso de Doutorado Direto, com ingresso at 29 julho de 2016). 1. Das Disposies Gerais. 1.1. Aos futuros egressos do referido curso ser outorgado o ttulo de

  3. EDITAL N 049/2014 -Processo seletivo para o curso de Doutorado do Programa de Ps-Graduao em Meteorologia -Instituto de Astronomia, Geofsica e

    E-print Network

    Neto, Gasto Bierrenbach Lima

    EDITAL N 049/2014 - Processo seletivo para o curso de Doutorado do Programa de Ps-Graduao em a seleo de candidatos ao curso de Doutorado, em fluxo contnuo, para o ano de 2015 e estabelece a seguir todo o ano, de acordo com a existncia de vagas. 1.2. Aos futuros egressos do referido curso ser

  4. Retificao: Edital n 003 do Processo Seletivo para o curso de Mestrado do Programa de Ps-Graduao em Meteorologia do Instituto de Astronomia,

    E-print Network

    Neto, Gasto Bierrenbach Lima

    Retificao: Edital n 003 do Processo Seletivo para o curso de Mestrado do Programa de Ps setembro de 2015. Requisito Curso de Graduao (Bacharelado ou Licenciatura) completo. Documentao nmero de semestres previstos para o trmino do curso do candidato) x semestres de x semestres 4 4 pontos

  5. Gua de matriculacin para el alumnado de la Universidad de Alicante. Curso 2015-16 Servicio de Gestin Acadmica. Universidad de Alicante Pgina 1 de 16

    E-print Network

    Escolano, Francisco

    Gua de matriculacin para el alumnado de la Universidad de Alicante. Curso 2015-16 Servicio de ALICANTE Matriculacin a travs de UACloud Curso Acadmico 2015-16 #12;Gua de matriculacin para el alumnado de la Universidad de Alicante. Curso 2015-16 Servicio de Gestin Acadmica. Universidad de

  6. An Apparatus to Control and Monitor the Para-D2 Concentration in a Solid Deuterium, Superthermal Source of Ultra-cold Neutrons

    E-print Network

    C. -Y. Liu; S. K. Lamoreaux; A. Saunders; D. Smith; A. R. Young

    2003-07-09

    Controlling and measuring the concentration of para-D2 is an essential step toward realizing solid deuterium as an intense ultra-cold neutron (UCN) source. To this end, we implemented an experimental technique to convert para- to ortho-deuterium molecules by flowing D2 gas through a cryogenic cell filled with paramagnetic hydrous ferric oxide granules. This process efficiently reduced the para-D2 concentration from 33.3% to 1.5%. Rotational Raman spectroscopy was applied to measure the residual para-D2 contamination to better than 2 parts in 10^3, and the hydrogen contamination to 1 part in 10^3. We also contrast our optical technique to conventional thermal conductivity measurements of the para-D2 concentration, reporting some of the relevant strengths and weaknesses of our implementation of each technique.

  7. Movement and muscle activity pattern in wheelchair ambulation by persons with para-and tetraplegia.

    PubMed

    Schantz, P; Bjrkman, P; Sandberg, M; Andersson, E

    1999-06-01

    The patterns of movement and muscle activation in wheelchair ambulation have been studied in two groups: subjects with paraplegia (n = 4) and tetraplegia (n = 3). All subjects were physically active and experienced wheelchair users. The tests were done in the subjects' own wheelchairs and under free-wheeling conditions. The tasks studied were: self-chosen normal velocity, maximal velocity and maximally accelerated start. Muscle activation was registered by surface electromyography performed on several arm and shoulder muscles. The movement pattern was studied by goniometry of the shoulder and elbow joints, as well as by observing video recordings. Speed and arm cycle frequency were also recorded. The movement pattern was divided into three phases: pull, push and recovery. Relatively concordant muscle activation patterns were noted within the groups, whereas differences were noted between the groups with regard to muscle activation, length of the pull and push phases and the velocity-dependent adaptation. The subjects with tetraplegia were more dependent on the pull phase. The self-chosen normal and maximal speeds of the subjects with tetraplegia were approximately half those of the subjects with paraplegia. Three different types of recovery movements were noted as well as a velocity-dependent adaptation. Major trunk movements during the rim phase were only noted at the maximally accelerated start. In conclusion, the results point to both similarities and differences in the movement pattern and muscle activation in individuals with para- and tetraplegia under different ambulation conditions. The differences are of such a magnitude that they are important enough to consider when teaching wheelchair techniques and developing rehabilitation programmes for different groups of patients with spinal cord injuries. PMID:10380721

  8. Introduccion a la hidraulica de aguas subterraneas : un texto programado para auto-ensenanza

    USGS Publications Warehouse

    Bennett, Gordon D.

    1987-01-01

    Este ' texto programado esta diseflado para ayudarle a comprender la teoria de la hidniulica de aguas subterraneas por medio de la auto-enseflanza. La instrucci6n programada es un enfoque a una materia, un metodo de aprender;que no elimina el esfuerzo mental del proceso de aprendizaje. Algunas secciones de este programa necesitan solamente ser leidas; otras tendrian que ser elaboradas con lapiz y papel. Algunas preguntas pueden ser contestadas directamente; otras requieren calculos. A medida que se avanza en el texto, tendra que consultar frecuentemente textos o referencias sobre matematicas, mecanica de fluidos e hidrologia. En cada una de las ocho partes del texto, inicie el programa de instrucci6n leyendo la Secci6n 1. Elija una respuesta a la pregunta al final de la secci6n y dirijase a la nueva secci6n indicada al lado de la respuesta escogida. Si su respuesta fue correcta, pase a la secci6n que contiene materia nueva y otra pregunta, y proceda tal como en la Secci6n 1. Si su respuesta no fue correcta, dirijase a la secci6n que contiene explicaciones adicionales sobre el tema anterior y que le indica volver a la pregunta inicial e intentar de nuevo. En este caso, valdra Ia pena repasar el material de la secci6n anterior. Continue de esta man era en el programa hasta que llegue a Ia secci6n que indica el final de la parte. Observe que aunque las secciones estan en orden numerico en cada una de las ocho partes, por lo general, usted no procedeni en secuencia numerica (Secci6n 1 ala Secci6n 2, etc.) de principia a fin.

  9. A structural and spectroscopic study on para-aminohippuric acid with experimental and theoretical approaches.

    PubMed

    Karabacak, Mehmet; Cinar, Zeliha; Cinar, Mehmet

    2012-01-01

    In this work, the molecular conformation, vibrational and electronic analysis of para-aminohippuric acid (pAHA, C(9)H(10)N(2)O(3)) were presented for the ground state using experimental techniques (FT-IR, FT-Raman and UV) and density functional theory (DFT) employing B3LYP exchange correlation with the 6-311++G(d,p) basis set. FT-IR and FT-Raman spectra were recorded in the regions of 400-4000cm(-1) and 50-4000cm(-1), respectively. The UV absorption spectra of the compound that dissolved in ethanol and water solution were recorded in the range of 190-400nm. Potential energy curve was computed by means of scanning NCCO torsion angle. The geometry optimization and the energies associated possible four conformers (C1-C4) were computed. The computational results diagnose the most stable conformer of pAHA as the C1 form. Optimized structure of compound was interpreted and compared with the earlier reported experimental values. The complete assignments of fundamental vibrations were performed on the basis of the total energy distribution (TED) of the vibrational modes, calculated with scaled quantum mechanics (SQM) method. A study on the electronic properties, such as frontier molecular energies, absorption wavelengths and oscillator strengths, were predicted by time-dependent DFT (TD-DFT) approach, while taking solvent effects into account. To investigate non-linear optical properties: polarizability, anisotropy of polarizability and molecular first hyperpolarizability of molecule were computed. Thermodynamic properties (heat capacity, entropy and enthalpy) of the title compound at different temperatures were calculated. PMID:22036005

  10. Low concentrations of Bisphenol A and para-Nonylphenol affect extravillous pathway of human trophoblast cells.

    PubMed

    Spagnoletti, Antonella; Paulesu, Luana; Mannelli, Chiara; Ermini, Leonardo; Romagnoli, Roberta; Cintorino, Marcella; Ietta, Francesca

    2015-09-01

    Bisphenol A (BPA) and para-Nonylphenol (p-NP) are chemicals of industrial origin which may influence human reproductive health. The effects of these substances in the prenatal life is an important topic that is receiving greater attention in the developed countries. In this study, human trophoblast cells HTR-8/SVneo were exposed to BPA and p-NP (1??10(-15), 1??10(-13), 1??10(-11), 1??10(-9) and 1??10(-7)?M) and incubated for 24, 48 and/or 72?h then, examined for the main physiological processes which characterize the extravillous trophoblast. Cell proliferation showed no changes while the processes of cell migration and invasion were both reduced by BPA and p-NP. For each chemical, the activity was higher at lower concentrations with a maximum activity between 1??10(-13) and 1??10(-11)?M (p?

  11. A review of inhalation toxicology studies with para-aramid fibrils.

    PubMed

    Warheit, D B

    1995-10-01

    The paper summarizes the results of inhalation toxicology studies associated with para-aramid (p-aramid) fibrils. The review is subdivided into two categories: the results of inhalation toxicity studies and mechanistic inhalation studies. Keratin-associated lesions were observed in the lungs of female rats following chronic exposure to high concentrations of p-aramid. These lesions were originally interpreted as cystic keratinizing squamous cell carcinomas (CKSCC). In recent years, this keratinizing lesion has been observed in the lungs of rats with greater regularity in numerous chronic inhalation studies following exposures to a variety of dusts. In an attempt to reach a consensus on an appropriate diagnosis for this lesion, an international panel of pathologists was convened to evaluate the morphological aspects of this lesion. The panel considered that the most appropriate diagnosis for this lesion was 'proliferative keratin cyst' (PKC), the biological potential of the PKC remains controversial, but it appears to be unique to the rat species and has little relevance for humans. Mechanistic studies with p-aramid have demonstrated that acute inhalation of high concentrations of fibrils produces a potent but transient pulmonary inflammatory and cell labelling response. The inhaled fibrils have low durability in the lungs of rats as evidenced by a progressive decrease in median fibre lengths with increasing residence time in the lung. In contrast, in a comparative study, size-separated chrysotile asbestos produced a sustained increase over controls in cellular proliferation responses of terminal airways, parenchyma, subpleural and mesothelial regions.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:8526399

  12. Tyrosine-lipid peroxide adducts from radical termination: para coupling and intramolecular Diels-Alder cyclization.

    PubMed

    Shchepin, Roman; Mller, Matias N; Kim, Hye-young H; Hatch, Duane M; Bartesaghi, Silvina; Kalyanaraman, Balaraman; Radi, Rafael; Porter, Ned A

    2010-12-15

    Free radical co-oxidation of polyunsaturated lipids with tyrosine or phenolic analogues of tyrosine gave rise to lipid peroxide-tyrosine (phenol) adducts in both aqueous micellar and organic solutions. The novel adducts were isolated and characterized by 1D and 2D NMR spectroscopy as well as by mass spectrometry (MS). The spectral data suggest that the polyunsaturated lipid peroxyl radicals give stable peroxide coupling products exclusively at the para position of the tyrosyl (phenoxy) radicals. These adducts have characteristic (13)C chemical shifts at 185 ppm due to the cross-conjugated carbonyl of the phenol-derived cyclohexadienone. The primary peroxide adducts subsequently undergo intramolecular Diels-Alder (IMDA) cyclization, affording a number of diastereomeric tricyclic adducts that have characteristic carbonyl (13)C chemical shifts at ~198 ppm. All of the NMR HMBC and HSQC correlations support the structure assignments of the primary and Diels-Alder adducts, as does MS collision-induced dissociation data. Kinetic rate constants and activation parameters for the IMDA reaction were determined, and the primary adducts were reduced with cuprous ion to give a phenol-derived 4-hydroxycyclohexa-2,5-dienone. No products from adduction of peroxyls at the phenolic ortho position were found in either the primary or cuprous reduction product mixtures. These studies provide a framework for understanding the nature of lipid-protein adducts formed by peroxyl-tyrosyl radical-radical termination processes. Coupling of lipid peroxyl radicals with tyrosyl radicals leads to cyclohexenone and cyclohexadienone adducts, which are of interest in and of themselves since, as electrophiles, they are likely targets for protein nucleophiles. One consequence of lipid peroxyl reactions with tyrosyls may therefore be protein-protein cross-links via interprotein Michael adducts. PMID:21090613

  13. Liquid chromatographic determination of para-toluenesulfonamide in edible fillet tissues from three species of fish

    USGS Publications Warehouse

    Meinertz, J.R.; Schmidt, L.J.; Stehly, G.R.; Gingerich, W.H.

    1999-01-01

    Chloramine-T (N-sodium-N-chloro-p-toluene-sulfonamide) is a candidate therapeutic drug for treating bacterial gill disease, a predominant disease of a variety of fish species. Research has been initiated to obtain the U.S. Food and Drug Administration's (FDA) approval for the use of chloramine-T on a variety of fish species. An attribute of a therapeutic aquaculture drug that must be characterized before the FDA approves its use is depletion of the drug's marker residue (the drug's parent compound or metabolite of highest concentration in an edible tissue). Para-Toluenesulfonamide (p-TSA) is the primary degradation product and marker residue for chloramine-T in rainbow trout. To conduct residue depletion studies for chloramine-T in fish, a robust analytical method sensitive and specific for p-TSA residues in edible fillet tissue from a variety of fish was required. Homogenized fillet tissues from rainbow trout (Oncorhynchus mykiss), walleye (Stizostedion vitreum), and channel catfish (Ictalurus punctatus) were fortified at nominal p-TSA concentrations of 17, 67, 200, 333, and 1000 ng/g. Samples were analyzed by isocratic reversed-phase liquid chromatography (LC) with absorbance detection at 226 nm. Mean recoveries of p-TSA ranged from 77 to 93.17%; relative standard deviations ranged from 1.5 to 14%; method quantitation limits ranged from 13 to 18 ng/g; and method detection limits ranged from 3.8 to 5.2 ng/g. The LC parameters produced p-TSA peaks without coelution of endogenous compounds and excluded chromatographic interference from at least 20 chemicals and drugs of potential use in aquaculture.

  14. Long-term health-enhancing physical activity in rheumatoid arthritis - the PARA 2010 study

    PubMed Central

    2012-01-01

    Background People with rheumatoid arthritis (RA) suffer increased risk of disability andpremature mortality. Health-enhancing physical activity (HEPA) could be one importantfactor to reduce this risk. Rising health care costs call for the development and evaluation ofnew modes of rehabilitation, including physical activity in settings outside the health caresystem. Methods/Design This cohort study targets 450 patients with RA that do not currently meet HEPA recommendations, recruited from six hospitals reporting to the Swedish Rheumatology Quality Registers (SRQ). We have developed a two-year real-life intervention program including a minimum of twice-weekly circuit training, moderately intense physical activity the remaining days of the week and group meetings to support behavior change every other week. Our hypothesis is that increased physical activity and exercise will improve perceived health, reduce pain and fatigue, increase muscle function and aerobic capacity, impact psychosocial factors and prevent future cardiovascular events. Research questions regard outcomes, retention rates, doseresponse matters and the exploration of responder characteristics. This protocol outlines recruitment procedure, design, assessment methods and the intervention program of the study. Discussion The PARA 2010 project is designed to expand the knowledge on HEPA in RA by a progressive approach regarding population, setting, intervention, time frames and outcome measures. To our knowledge this is the first long-term HEPA program based on Social Cognitive Theory, and performed in a real life environment to demonstrate if this new setting can promote increased and maintained physical activity in people with RA. Trial registration number ISRCTN25539102 PMID:22656861

  15. Para-Aminobenzoic Acid (PABA) Synthase Enhances Thermotolerance of Mushroom Agaricus bisporus

    PubMed Central

    Lu, Zhonglei; Kong, Xiangxiang; Lu, Zhaoming; Xiao, Meixiang; Chen, Meiyuan; Zhu, Liang; Shen, Yuemao; Hu, Xiangyang; Song, Siyang

    2014-01-01

    Most mushrooms are thermo-sensitive to temperatures over 23C, which greatly restricts their agricultural cultivation. Understanding mushrooms innate heat-tolerance mechanisms may facilitate genetic improvements of their thermotolerance. Agaricus bisporus strain 02 is a relatively thermotolerant mushroom strain, while strain 8213 is quite thermo-sensitive. Here, we compared their responses at proteomic level to heat treatment at 33C. We identified 73 proteins that are differentially expressed between 02 and 8213 or induced upon heat stress in strain 02 itself, 48 of which with a known identity. Among them, 4 proteins are constitutively more highly expressed in 02 than 8213; and they can be further upregulated in response to heat stress in 02, but not in 8213. One protein is encoded by the para-aminobenzoic acid (PABA) synthase gene Pabs, which has been shown to scavenge the reactive oxygen species in vitro. Pabs mRNA and its chemical product PABA show similar heat stress induction pattern as PABA synthase protein and are more abundant in 02, indicating transcriptional level upregulation of Pabs upon heat stress. A specific inhibitor of PABA synthesis impaired thermotolerance of 02, while exogenous PABA or transgenic overexpression of 02 derived PABA synthase enhanced thermotolerance of 8213. Furthermore, compared to 8213, 02 accumulated less H2O2 but more defense-related proteins (e.g., HSPs and Chitinase) under heat stress. Together, these results demonstrate a role of PABA in enhancing mushroom thermotolerance by removing H2O2 and elevating defense-related proteins. PMID:24614118

  16. The total neutron cross-section of an ortho-para mixture of gaseous hydrogen at 75K

    NASA Astrophysics Data System (ADS)

    Corradi, G.; Celli, M.; Rhodes, N.; Soper, A. K.; Zoppi, M.

    2004-07-01

    From the data of a transmission experiment we have extracted the total neutron cross-section of a sample of gaseous hydrogen (T=75.03K, p=84.8bar, n=8.42nm-3) with a thermodynamic equilibrium ortho-para content (48% ortho, 52% para). The experiment was carried out on the PEARL instrument operating at the ISIS pulsed neutron source. After an accurate data reduction, the neutron spectra have been analyzed in the framework of the Modified Young and Koppel (MYK) theory, which is a successful extension to interacting fluids of the original Young and Koppel model valid for a dilute gas of hydrogen molecules. The total cross-section calculated with MYK theory, whose unique unknown parameter-the mean kinetic energy of the molecular centre of mass-was obtained through an independent path integral Monte Carlo simulation, shows a satisfactory agreement with the experimental results.

  17. X-ray photoelectron spectroscopy study of para-substituted benzoic acids chemisorbed to aluminum oxide thin films

    SciTech Connect

    Kreil, Justin; Ellingsworth, Edward; Szulczewski, Greg

    2013-11-15

    A series of para-substituted, halogenated (F, Cl, Br, and I) benzoic acid monolayers were prepared on the native oxide of aluminum surfaces by solution self-assembly and spin-coating techniques. The monolayers were characterized by x-ray photoelectron spectroscopy (XPS) and water contact angles. Several general trends are apparent. First, the polarity of the solvent is critical to monolayer formation. Protic polar solvents produced low coverage monolayers; in contrast, nonpolar solvents produced higher coverage monolayers. Second, solution deposition yields a higher surface coverage than spin coating. Third, the thickness of the monolayers determined from XPS suggests the plane of the aromatic ring is perpendicular to the surface with the carboxylate functional group most likely binding in a bidentate chelating geometry. Fourth, the saturation coverage (?2.7 10{sup 14} molecules cm{sup ?2}) is independent of the para-substituent.

  18. The importance of the ortho:para H2 ratio for the deuteration of molecules during pre-protostellar collapse

    E-print Network

    D. R. Flower; G. Pineau des Forets; C. M. Walmsley

    2006-01-19

    We have studied the evolution of molecular gas during the early stages of protostellar collapse. In addition to allowing for the freeze out of `heavy' species on to grains, we have computed the variation of population densities of the different nuclear spin states of ``tracer'' molecular ions such as H2D+ and D2H+. Processes which determine the relative populations of the nuclear spin states of molecules and molecular ions have received much less attention in the literature than those involved in their deuteration; but in fact the former processes are as significant as the latter and often involve the same reactants. We find that the ortho:para ratio of some species, e.g. H2D+, vary considerably as the density increases. Because the dynamical timescale is much shorter than some of the chemical timescales, there can be large departures of the predictions of the free--fall model from the steady state solution at the same density and temperature. In the case of H2, it seems unlikely that the steady state value of the ortho:para ratio is attained before protostellar collapse from the progenitor molecular cloud commences. Values of the ortho:para H2 ratio much higher than in steady state, which would prevail in ``young'' molecular clouds, are found to be inconsistent with high levels of deuteration of the gas. The internal energy of ortho--H2 acts as a reservoir of chemical energy which inhibits the deuteration of H3+ and hence of other species, such as N2H+ and NH3. In essence, the deuteration of molecular ions and molecules is sensitive to the ortho:para H2 ratio and hence to the chemical and thermal history of the parent molecular cloud.

  19. Long-term survival after resection of pancreatic ductal adenocarcinoma with para-aortic lymph node metastasis: case report

    PubMed Central

    2013-01-01

    Pancreatic cancer patients with para-aortic lymph node metastasis have a poor prognosis and patients living longer than 3 years are rare. We had a patient with pancreatic cancer who survived for more than 10 years after removal of the para-aortic lymph node metastasis. A 57-year-old woman was diagnosed with pancreatic head cancer and underwent a pancreaticoduodenectomy with subtotal gastric resection following Whipple reconstruction in 2000. Para-aortic lymph node metastasis was detected during the operation by intraoperative pathological diagnosis and an extended lymphadenectomy was performed with vascular skeletonization of the celiac and superior mesenteric arteries. In 2004, a low-density area was detected around the superior mesenteric artery (SMA) 5 cm from its root and she was treated with gemcitabine, and the area was undetectable after 3 years of treatment. In 2010, computed tomography showed a low-density area around the same lesion with an increased carcinoembryonic antigen level. After 4 months of gemcitabine treatment, we resected the tumor en bloc with the associated superior mesenteric vein and perineural tissue. Histopathological examination of the resected specimen revealed a well-differentiated tubular adenocarcinoma that closely resembled the original primary pancreatic cancer, indicating perineural recurrence 10 years after the initial resection. She had no recurrence around the SMA for more than one year. Although a meta-analysis has not proved the efficacy of preventive radical dissection, this case indicates that a patient with well-differentiated, chemotherapy-responsive pancreatic cancer with para-aortic lymph node metastasis could have a long survival time through extended dissection of the lymph nodes. PMID:23945441

  20. Catalytic Asymmetric 1,6-Conjugate Addition of para-Quinone Methides: Formation of All-Carbon Quaternary Stereocenters.

    PubMed

    Wang, Zhaobin; Wong, Yuk Fai; Sun, Jianwei

    2015-11-01

    Described herein is a general and mild catalytic asymmetric 1,6-conjugate addition of para-quinone methides (p-QMs), a class of challenging reactions with previous limited success. Benefiting from chiral Brnsted acid catalysis, which allows in?situ formation of p-QMs, our reaction expands the scope to general p-QMs with various substitution patterns. It also enables efficient intermolecular formation of all-carbon quaternary stereocenters with high enantioselectivity. PMID:26403542

  1. Astronoma para ciegos y amblopes. Proyecto de construccin de un planetario especial en la ciudad de Mar del Plata

    NASA Astrophysics Data System (ADS)

    Musso, S.

    ?`Qu es la Astronoma para Ciegos?. El trabajo es una adaptacin en base a la escala de magnitudes de Hipparco que cambia el concepto de luz por una adaptacin sonora, donde las estrellas de magnitud 6 se escuchan en 10 dB, ms o menos lo que consideramos el umbral de la audicin humana. Quienes no escuchan muy bien no pueden escuchar las magnitudes 6, de la misma manera que muchos de nosotros, que no poseemos una visin perfecta, no podemos observar esas mismas estrellas en el cielo (ms all de la polucin). A los astros de magnitud 5 vamos a relacionarlos a un sonido en 20 dB. Y as sucesivamente. Tambin los colores estarn representados en una convencin de graves a agudos y lo mismo algunas caractersticas del cielo. Por ejemplo, la Va Lctea se mostrar como un ``ruido", como bien nos lo hicieron ver nuestros futuros destinatarios. En Mar del Plata nos encontramos ya trabajando en un proyecto que tiene como objetivo final la construccin del Primer Planetario Acstico del Mundo, una herramienta para la enseanza de la astronoma, un espacio para la lucha contra la discriminacin del discapacitado y una posibilidad de ``ver el cielo de un modo diferente".

  2. Antibacterial activity of sulfamethoxazole transformation products (TPs): general relevance for sulfonamide TPs modified at the para position.

    PubMed

    Majewsky, Marius; Wagner, Danny; Delay, Markus; Brse, Stefan; Yargeau, Viviane; Horn, Harald

    2014-10-20

    Sulfonamide antibiotics undergo transformation in the aquatic environment through biodegradation, photolysis, or hydrolysis. In this study, the residual antibacterial activity of 11 transformation products (TPs) of sulfamethoxazole (SMX) was investigated with regard to their in vitro growth and luminescence inhibition on Vibrio fischeri (30 min and 24 h exposure). Two transformation products, 4-hydroxy-SMX and N(4)-hydroxy-acetyl-SMX, were synthesized in-house and confirmed by nuclear magnetic resonance and high-resolution mass spectrometry. Results of individual compound experiments showed that TPs modified at the para amino group still exhibit clear antibacterial effects, whereas TPs resulting from breakdown of the SMX structure lost this mechanism of action. 4-NO2- and 4-OH-SMX were found to inhibit growth to a clearly greater extent than the parent compound, SMX. In contrast, the N(4)-acetyl- and N(4)-hydroxy-acetyl-derivatives retain less than 10 and 5% of the effect of SMX on growth and luminescence inhibition, respectively. The effect of a mixture of para-modified TPs was observed to be additive. Considering the homologous series of sulfa drugs widely prescribed and their common mechanism of action, the potential environmental impact must consider the total amount of sulfonamide antibiotics and their derivative TPs, which might end up in a water body. Extrapolating the results obtained here for the para TPs of SMX to other sulfa drugs and determining the persistence and occurrence of these compounds in the aquatic environment is required for improved risk assessment. PMID:25211553

  3. Comparison of photoinduced reorientation of ortho-, meta-, and para-methyl red-doped nematic liquid crystals on rubbed polyimide

    NASA Astrophysics Data System (ADS)

    Statman, David; Statman, Ariel T.; Wozniak, Kaitlin; Brennan, Christopher

    2015-08-01

    We compare the photoinduced reorientation of the easy axis on rubbed polyimide surfaces for the nematic E7 doped with three isomers of methyl red; ortho, meta, and para. Using optical techniques, the angle and the pitch of the director at the polymer surface were measured before, during, and after photoexcitation of the dye. Optical absorbances were also measured before and after photoexcitation. Extrapolation lengths, hence anchoring energies, were determined with the on/off application of a magnetic field for meta- and para-methyl red-doped nematics. Because of an elastic reorientation of the easy axis in the presence of the magnetic field, we could not determine the extrapolation length of the ortho-methyl red-doped nematic. Our results confirm that photoinduced reorientation is facilitated by desorption of all dyes from the polymer surface. While there is little evidence of weak photoinduced adsorption of meta- and para-methyl red to the surface during photoexcitation, there is strong evidence of photoinduced adsorption of ortho-methyl red, which is long lasting.

  4. The vitamin-like dietary supplement para-aminobenzoic acid enhances the antitumor activity of ionizing radiation

    SciTech Connect

    Xavier, Sandhya; MacDonald, Shannon; Roth, Jennifer; Caunt, Maresa; Akalu, Abebe; Morais, Danielle; Buckley, Michael T.; Liebes, Leonard; Formenti, Silvia C.; Brooks, Peter C. . E-mail: peter.brooks@med.nyu.edu

    2006-06-01

    Purpose: To determine whether para-aminobenzoic acid (PABA) alters the sensitivity of tumor cells to ionizing radiation in vitro and in vivo. Methods and Materials: Cellular proliferation was assessed by WST-1 assays. The effects of PABA and radiation on tumor growth were examined with chick embryo and murine models. Real-time reverse transcriptase-polymerase chain reaction and Western blotting were used to quantify p21{sup CIP1} and CDC25A levels. Results: Para-aminobenzoic acid enhanced (by 50%) the growth inhibitory activity of radiation on B16F10 cells, whereas it had no effect on melanocytes. Para-aminobenzoic acid enhanced (50-80%) the antitumor activity of radiation on B16F10 and 4T1 tumors in vivo. The combination of PABA and radiation therapy increased tumor apoptosis. Treatment of tumor cells with PABA increased expression of CDC25A and decreased levels of p21{sup CIP1}. Conclusions: Our findings suggest that PABA might represent a compound capable of enhancing the antitumor activity of ionizing radiation by a mechanism involving altered expression of proteins known to regulate cell cycle arrest.

  5. Desarrollo de la Escala sobre el Estigma Relacionado con el VIH/SIDA para Profesionales de la Salud mediante el uso de mtodos mixtos123

    PubMed Central

    Varas-Daz, Nelson; Neilands, Torsten B.; Guilamo-Ramos, Vincent; Cintrn Bou, Francheska N.

    2009-01-01

    El estigma relacionado con el VIH/SIDA contina siendo un obstculo para la prevencin primaria y secundaria del VIH. Las consecuencias para las personas que viven con la enfermedad han sido muy documentadas y continan siendo una gran preocupacin para las personas que proveen servicios de salud y para aquellas que investigan el tema. Estas consecuencias son preocupantes cuando el estigma emana de profesionales de la salud porque se puede limitar el acceso a los servicios. Uno de los principales obstculos para la investigacin del estigma relacionado con el VIH en Puerto Rico es la falta de instrumentos cuantitativos para evaluar las manifestaciones del estigma entre profesionales de la salud. El objetivo principal de este estudio fue desarrollar y probar las propiedades psicomtricas de una escala sobre el estigma relacionado con el VIH/SIDA culturalmente apropiada para personas que proveen servicios de salud puertorriqueas y desarrollar una versin corta de la escala que pudiera usarse en escenarios clnicos con tiempo limitado. El instrumento desarrollado estuvo basado en evidencia cualitativa recopilada entre profesionales y estudiantes de profesiones de la salud puertorriqueos/as (n=80) y administrado a una muestra de 421 profesionales de la salud en adiestramiento. La escala contena 12 dimensiones del estigma relacionado con el VIH/SIDA. El anlisis cuantitativo corrobor 11 de ellas, teniendo como resultado un instrumento con validez y confiabilidad satisfactoria. Estas dimensiones, a su vez, fueron subcomponentes de un factor de estigma general superior. PMID:20333258

  6. Yeast Coq9 controls deamination of coenzyme Q intermediates that derive from para-aminobenzoic acid.

    PubMed

    He, Cuiwen H; Black, Dylan S; Nguyen, Theresa P T; Wang, Charles; Srinivasan, Chandra; Clarke, Catherine F

    2015-09-01

    Coq9 is a polypeptide subunit in a mitochondrial multi-subunit complex, termed the CoQ-synthome, required for biosynthesis of coenzyme Q (ubiquinone or Q). Deletion of COQ9 results in dissociation of the CoQ-synthome, but over-expression of Coq8 putative kinase stabilizes the CoQ-synthome in the coq9 null mutant and leads to the accumulation of two nitrogen-containing Q intermediates, imino-demethoxy-Q6 (IDMQ6) and 3-hexaprenyl-4-aminophenol (4-AP) when para-aminobenzoic acid (pABA) is provided as a ring precursor. To investigate whether Coq9 is responsible for deamination steps in Q biosynthesis, we utilized the yeast coq5-5 point mutant. The yeast coq5-5 point mutant is defective in the C-methyltransferase step of Q biosynthesis but retains normal steady-state levels of the Coq5 polypeptide. Here, we show that when high amounts of 13C6-pABA are provided, the coq5-5 mutant accumulates both 13C6-imino-demethyl-demethoxy-Q6 (13C6-IDDMQ6) and 13C6-demethyl-demethoxy-Q6 (13C6-DDMQ6). Deletion of COQ9 in the yeast coq5-5 mutant along with Coq8 over-expression and 13C6- pABA labeling leads to the absence of 13C6-DDMQ6, and the nitrogen-containing intermediates 13C6-4-AP and 13C6-IDDMQ6 persist. We describe a coq9 temperature-sensitive mutant and show that at the non-permissive temperature, steady-state polypeptide levels of Coq9-ts19 increased, while Coq4, Coq5, Coq6, and Coq7 decreased. The coq9-ts19 mutant had decreased Q6 content and increased levels of nitrogen-containing intermediates. These findings identify Coq9 as a multi-functional protein that is required for the function of Coq6 and Coq7 hydroxylases, for removal of the nitrogen substituent from pABA-derived Q intermediates, and is an essential component of the CoQ synthome. PMID:26008578

  7. para-Aminobenzoic Acid Is a Precursor in Coenzyme Q6 Biosynthesis in Saccharomyces cerevisiae*

    PubMed Central

    Marbois, Beth; Xie, Letian X.; Choi, Samuel; Hirano, Kathleen; Hyman, Kyle; Clarke, Catherine F.

    2010-01-01

    Coenzyme Q (ubiquinone or Q) is a crucial mitochondrial lipid required for respiratory electron transport in eukaryotes. 4-Hydroxybenozoate (4HB) is an aromatic ring precursor that forms the benzoquinone ring of Q and is used extensively to examine Q biosynthesis. However, the direct precursor compounds and enzymatic steps for synthesis of 4HB in yeast are unknown. Here we show that para-aminobenzoic acid (pABA), a well known precursor of folate, also functions as a precursor for Q biosynthesis. A hexaprenylated form of pABA (prenyl-pABA) is normally present in wild-type yeast crude lipid extracts but is absent in yeast abz1 mutants starved for pABA. A stable 13C6-isotope of pABA (p- amino[aromatic-13C6]benzoic acid ([13C6]pABA)), is prenylated in either wild-type or abz1 mutant yeast to form prenyl-[13C6]pABA. We demonstrate by HPLC and mass spectrometry that yeast incubated with either [13C6]pABA or [13C6]4HB generate both 13C6-demethoxy-Q (DMQ), a late stage Q biosynthetic intermediate, as well as the final product 13C6-coenzyme Q. Pulse-labeling analyses show that formation of prenyl-pABA occurs within minutes and precedes the synthesis of Q. Yeast utilizing pABA as a ring precursor produce another nitrogen containing intermediate, 4-imino-DMQ6. This intermediate is produced in small quantities in wild-type yeast cultured in standard media and in abz1 mutants supplemented with pABA. We suggest a mechanism where Schiff base-mediated deimination forms DMQ6 quinone, thereby eliminating the nitrogen contributed by pABA. This scheme results in the convergence of the 4HB and pABA pathways in eukaryotic Q biosynthesis and has implications regarding the action of pABA-based antifolates. PMID:20592037

  8. Deposition, clearance, and shortening of Kevlar para-aramid fibrils in acute, subchronic, and chronic inhalation studies in rats.

    PubMed

    Kelly, D P; Merriman, E A; Kennedy, G L; Lee, K P

    1993-10-01

    The deposition and clearance of lung-deposited Kevlar para-aramid fibrils (subfibers) have been investigated as part of a subchronic and chronic inhalation toxicity testing program. Fibrils recovered from lung tissue in para-aramid-exposed Sprague-Dawley rats were microscopically counted and measured after exposures to airborne fibrils which were about 12 microns median length (ML) and < 0.3 micron median diameter. In each of three studies lung-recovered fibrils were progressively shorter with increasing residence time in the lungs. Twenty-eight days after a single 6-hr exposure at 400 respirable fibrils per cubic centimeter (f/cm3) the ML of recovered fibrils decreased to about 5 microns. Twenty-four months after a 3-week exposure to 25 or 400 f/cm3, fibrils reached about 2 microns ML. After 2 years of continuous exposure at 2.5, 25, or 100 f/cm3 or 1 year exposure plus 1 year recovery at 400 f/cm3, fibril ML approached 4 microns. In the 2-year study, the lung-fiber accumulation rate/exposure concentration was similar for the three highest concentrations and was about 3 x greater than that seen at 2.5 f/cm3, indicating that concentrations of about 25 f/cm3 or more may overwhelm clearance mechanisms. Time required for fibrils to be reduced to < 5 microns in the lung was markedly less at lower exposure concentration and shorter exposure time. The primary shortening mechanism is proposed to be long fibril cutting by enzymatic attack at fibril defects. However, length-selective fibril deposition and clearance may contribute to shortening in the first few days after exposure. The enzymatic cutting hypothesis is supported by measured increases in numbers of short fibers following cessation of exposures, continued shortening of the fibril length distribution up to 2 years following exposure, and in vitro fibril shortening after 3 months in a proteolytic enzyme preparation. The conclusion is that para-aramid fibrils are less durable in the lungs of rats than expected from the known chemical resistance of commercial yarn. These data suggest that at the low para-aramid fibril exposures found in the workplace, this fibril-shortening mechanism may limit the residence time of long fibers in the lungs of exposed workers. In addition, associated cascade impactor aerodynamic measurements indicate that due to their ribbon shape and curly nature, para-aramid fibrils behave aerodynamically larger than straight fibers. PMID:8258388

  9. Challenges in preparing, preserving and detecting para-water in bulk: overcoming proton exchange and other hurdles.

    PubMed

    Mammoli, Daniele; Salvi, Nicola; Milani, Jonas; Buratto, Roberto; Bornet, Aurlien; Sehgal, Akansha Ashvani; Canet, Estel; Pelupessy, Philippe; Carnevale, Diego; Jannin, Sami; Bodenhausen, Geoffrey

    2015-10-28

    Para-water is an analogue of para-hydrogen, where the two proton spins are in a quantum state that is antisymmetric under permutation, also known as singlet state. The populations of the nuclear spin states in para-water are believed to have long lifetimes just like other Long-Lived States (LLSs). This hypothesis can be verified by measuring the relaxation of an excess or a deficiency of para-water, also known as a "Triplet-Singlet Imbalance" (TSI), i.e., a difference between the average population of the three triplet states T (that are symmetric under permutation) and the population of the singlet state S. In analogy with our recent findings on ethanol and fumarate, we propose to adapt the procedure for Dissolution Dynamic Nuclear Polarization (D-DNP) to prepare such a TSI in frozen water at very low temperatures in the vicinity of 1.2 K. After rapid heating and dissolution using an aprotic solvent, the TSI should be largely preserved. To assess this hypothesis, we studied the lifetime of water as a molecular entity when diluted in various solvents. In neat liquid H2O, proton exchange rates have been characterized by spin-echo experiments on oxygen-17 in natural abundance, with and without proton decoupling. One-dimensional exchange spectroscopy (EXSY) has been used to study proton exchange rates in H2O, HDO and D2O mixtures diluted in various aprotic solvents. In the case of 50 mM H2O in dioxane-d8, the proton exchange lifetime is about 20 s. After dissolving, one can observe this TSI by monitoring intensities in oxygen-17 spectra of H2O (if necessary using isotopically enriched samples) where the AX2 system comprising a "spy" oxygen A and two protons X2 gives rise to binomial multiplets only if the TSI vanishes. Alternatively, fast chemical addition to a suitable substrate (such as an activated aldehyde or ketone) can provide AX2 systems where a carbon-13 acts as a spy nucleus. Proton signals that relax to equilibrium with two distinct time constants can be considered as a hallmark of a TSI. We optimized several experimental procedures designed to preserve and reveal dilute para-water in bulk. PMID:26399171

  10. 2/15/2014 Tecnologia usa micro-moinhos de vento para recarregar telefones celulares -Cincia e tecnologia sade Digest http://dhemo.net/articles/37344.html 1/4

    E-print Network

    Chiao, Jung-Chih

    2/15/2014 Tecnologia usa micro-moinhos de vento para recarregar telefones celulares - Cincia e usa micro-moinhos de vento para recarregar telefones celulares Tecnologia usa micro-moinhos de vento para recarregar telefones celulares Postado em09/01/2014 17:00:00 +7 Ajnls a Google-on Associado da

  11. Concordance study between the ParaDNA Intelligence Test, a rapid DNA profiling assay, and a conventional STR typing kit (AmpFlSTR SGM Plus).

    PubMed

    Ball, G; Dawnay, N; Stafford-Allen, B; Panasiuk, M; Rendell, P; Blackman, S; Duxbury, N; Wells, S

    2015-05-01

    The ParaDNA Intelligence Test enables STR profiling directly from human biological samples and evidence items collected from crime scene in 75min. Designed for non-expert use this system allows DNA information to be available to investigators before it would typically be available from a laboratory. The ParaDNA Intelligence Test system amplifies D3S1358, D8S119, D16S539, D18S1358 and TH01 STR loci and the gender typing locus amelogenin and detects the alleles present with HyBeacon probes. Individual DNA samples from 381 UK Caucasian individuals were analysed using AmpFlSTR SGM Plus and the ParaDNA Intelligence Test with the derived STR profiles compared. Here we describe the high level of concordance demonstrated between the two systems and discuss this with reference to allele frequencies and the discriminatory power offered by the ParaDNA Intelligence Test. PMID:25528026

  12. Energy Savers: Tips for Saving Energy and Money at Home; El Ahorro de Energa: Sugerencias para ahorrar energa y dinero en el hogar

    SciTech Connect

    Jones, J.

    2000-06-01

    The Department of Energy of the United States of America works to guarantee provisions of safe energy, reliable and economically accessible to support to one developing economy and to protect the atmosphere. These suggestions and ideas to increase the energy efficiency in their house represent simple ways in which our citizens can contribute to preserve the atmosphere at world-wide level, to reduce the level of contamination of the air and to reserve our natural resources for future generations. [Spanish] El Departamento de Energa de los Estados Unidos de America trabaja para garantizar suministros de energa seguros, confiables y econmicamente accesibles para apoyar a una economa en desarrollo y proteger el medio ambiente. Estas sugerencias e ideas para aumentar la eficiencia energetica en su casa representan maneras sencillas en que nuestros ciudadanos pueden contribuir a preservar el medio ambiente a nivel mundial, a reducir el nivel de contaminacin del aire y a reservar nuestros recursos naturales para las generaciones futuras.

  13. Mejore su ingls para trabajar, estudiar y triunfar en la ciudad de Nueva York! El mundialmente reconocido y famoso programa de ingls de IELI (International English Language

    E-print Network

    Qiu, Weigang

    nivel (no-rembolsable) USD $85.00 Inscripcin (no-rembolsable) USD $25.00 #12;Para poder enviar la envi de los documentos por medio de correo certificado (este pago no es devuelto). El envi de la

  14. TEMARIO PARA EL EXAMEN DE BIOLOGIA CELULAR y MOLECULAR (Es necesario que el estudiante maneje los conceptos esenciales de los temas indicados)

    E-print Network

    TEMARIO PARA EL EXAMEN DE BIOLOGIA CELULAR y MOLECULAR (Es necesario que el estudiante maneje los. Filamentos de actina. 6. Ciclo celular. Fases del ciclo celular. Mitosis y meiosis. Bibliografa: Alberts

  15. La para-osteo-arthropathie neurogene dans le syndrome de guillain barre: complication rare ( propos d'un cas et revue de la littrature)

    PubMed Central

    Abid, Hatim; El Idrissi, Mohamed; Shimi, Mohamed; El Ibrahimi, Abdelhalim; El Mrini, Abdelmajid

    2015-01-01

    Les para-osto-arthropathies neurognes sont des complications classiques des affections neurologiques centrales, surtout dans les contextes traumatiques. Elles surviennent principalement au voisinage des grosses articulations. Leur physiopathologie exacte reste inconnue malgr de trs nombreux travaux et cas rapports. Il semble que leur survenue au dcours d'affections neurologiques priphriques soit exceptionnelle. Nous prsentons le cas d'une para-osto-arthropathie de hanche bilatrale compliquant un syndrome de Guillain-Barr. PMID:26161168

  16. COMO SE CONECTAR A REDE WIFI DA BIBLIOTECA Para conectar a rede WIFI da biblioteca a partir do notebook, siga os passos abaixo

    E-print Network

    Paraná, Universidade Federal do

    1 COMO SE CONECTAR A REDE WIFI DA BIBLIOTECA Para conectar a rede WIFI da biblioteca a partir do. Se caso apareça mais opções procure pela "Conectar-se a internet". 3º Passo: - Ao clicar em "Conectar-se as conexões disponíveis para você se conectar: 5º Passo: Ao serem procuradas e exibidas as conexões

  17. Radiosurgery for Para-IAC Meningiomas: The Effect of Radiation Dose to the Cochlea on Hearing Outcome

    SciTech Connect

    Kim, Young-Hoon; Department of Neurosurgery, Seoul National University College of Medicine, Seoul ; Kim, Dong Gyu; Han, Jung Ho; Department of Neurosurgery, Seoul National University College of Medicine, Seoul ; Chung, Hyun-Tai; Kim, In Kyung; Song, Sang Woo; Department of Neurosurgery, Seoul National University College of Medicine, Seoul ; Park, Jeong-Hoon; Department of Neurosurgery, Seoul National University College of Medicine, Seoul ; Kim, Jin Wook; Kim, Yong Hwy; Park, Chul-Kee; Department of Neurosurgery, Seoul National University College of Medicine, Seoul ; Kim, Chae-Yong; Department of Neurosurgery, Seoul National University College of Medicine, Seoul ; Paek, Sun Ha; Jung, Hee-Won; Department of Neurosurgery, Seoul National University College of Medicine, Seoul

    2012-11-01

    Purpose: This study was performed to assess the radiosurgical results of meningiomas extending into the internal acoustic canal (para-IAC meningiomas), with a particular focus on the effect of radiation dose to the cochlea on hearing outcome. Methods and Materials: A total of 50 patients who underwent radiosurgery for para-IAC meningiomas between 1998 and 2009, which were followed for 2 years, were enrolled. The mean age was 55.8 years (range, 15-75). The mean tumor volume was 6.1 cm{sup 3} (range, 1.0-19.0), the mean tumor length in the IAC was 6.9 mm (range, 1.3-13.3), and the mean prescribed marginal dose was 13.1 Gy (range, 10-15) at an isodose line of 50%. The mean follow-up duration was 46 months (range, 24-122). Results: Eight (16.0%) patients had nonserviceable hearing at the time of surgery. At the last follow-up, the tumor control rate was 94%; unchanged in 17 patients, decreased in 30 patients, and increased in 3 patients. Among 42 patients with serviceable hearing at the time of radiosurgery, it was preserved in 41 (97.6%) patients at the last follow-up. The maximal and mean radiation doses to the cochleae of these 41 patients were 5.8 Gy {+-} 0.3 (range, 3.1-11.5) and 4.3 Gy {+-} 0.2 (range, 2.2-7.5), respectively. The maximal dose to the cochlea of the patient who lost hearing after radiosurgery was 4.7 Gy. Conclusions: The radiation dose to the cochlea may have the minimal toxic effect on the hearing outcome in patients who undergo radiosurgery for para-IAC meningiomas.

  18. High Resolution Infrared Spectroscopy of CH_3F-({ortho}-H_2){n} Cluster in Solid {para}-H_2

    NASA Astrophysics Data System (ADS)

    Kawasaki, Hiroyuki; Mizoguchi, Asao; Kanamori, Hideto

    2015-06-01

    The absorption spectrum of the ?3 (C-F stretching) mode of CH_3F in solid {para}-H_2 by FTIR showed a series of equal interval peaks. Their interpretation was that the {}-th peak of this series was due to CH_3F-({ortho}-H_2){n} clusters which were formed CH_3F and {n}'s {ortho}-H_2 in first nearest neighbor sites of the {para}-H_2 crystal with {hcp} structure. In order to understand this system in more detail, we have studied these peaks, especially {n} = 0 - 3 corresponding to 1037 - 1041 wn, by using high-resolution and high-sensitive infrared quantum cascade (QC) laser spectroscopy. Before now, we found many peaks around each {n}-th peak of the cluster, which we didn't know their origins. We observed photochromic phenomenon of these peaks by taking an advantage of the high brightness of the laser. In this study, we focus on satellite series consisting of six peaks which locate at the lower energy side of each main peak. All the peaks showed a common red shouldered line profile, which corresponds to partly resolved transitions of {ortho}- and {para}- CH_3F. The spectral pattern and time behavior of the peaks may suggest that these satellite series originate from a family of CH_3F clusters involving {ortho}-H_2 in second nearest neighbor sites. A model function assuming this idea is used to resolve the observed spectrum into each Lorentzian component, and then some common features of the satellite peaks are extracted and the physical meanings of them will be discussed. K. Yoshioka and D. T. Anderson, J. Chem. Phys. 119 (2003) 4731-4742 A. R. W. McKellar, A. Mizoguchi, and H. Kanamori, J. Chem. Phys. 135 (2011) 124511 A. R. W. McKellar, A. Mizoguchi, and H. Kanamori, Phys. Chem. Chem. Phys. 13 (2011) 11587-11589.

  19. Collisional excitation of CN(X2?+) by para- and ortho-H2: Fine-structure resolved transitions.

    PubMed

    Kalugina, Yulia; K?os, Jacek; Lique, Franois

    2013-08-21

    We present a new four dimensional potential energy surface (PES) for the CN(X(2)?(+))-H2 system. Both molecules were treated as rigid rotors. Potential energy was obtained from the electronic structure calculations using a partially spin-restricted coupled cluster with single, double, and perturbative triple excitations method. The four atoms were described using the augmented correlation-consistent triple zeta (aug-cc-pVTZ) basis sets augmented with mid-bond functions for improved description of van der Waals interactions. The global minimum is characterized by the well depth of 121.36 cm(-1) for the linear CN???H2 structure. The zero-order corrected dissociation energies D0 are 27.73 cm(-1) and 38.75 cm(-1) for the complex with para- and ortho-H2, respectively. These theoretical results obtained using our new PES are in excellent agreement with experimental values [Y. Chen and M. C. Heaven, J. Chem. Phys. 109, 5171 (1998)]. We perform fully quantum close coupling calculations of the rotationally inelastic cross sections of CN in collisions with para-H2 and ortho-H2 at low and intermediate energies. Corresponding rate coefficients were compared with experimental results of Brunet et al. [J. Chem. Phys. 116, 3617 (2002)]. A good agreement between theoretical and experimental results was found. Fine-structure resolved cross sections were then obtained through a recoupling technique. Significant differences exist between para- and ortho-H2 results. The propensity rules between fine-structure levels are also studied, and it is shown that the cross sections for ?j = ?N transitions are much larger than those for ?j ? ?N transitions, as expected from theoretical considerations. PMID:23968086

  20. Collisional excitation of CN(X2?+) by para- and ortho-H2: Fine-structure resolved transitions

    NASA Astrophysics Data System (ADS)

    Kalugina, Yulia; K?os, Jacek; Lique, Franois

    2013-08-01

    We present a new four dimensional potential energy surface (PES) for the CN(X2?+)-H2 system. Both molecules were treated as rigid rotors. Potential energy was obtained from the electronic structure calculations using a partially spin-restricted coupled cluster with single, double, and perturbative triple excitations method. The four atoms were described using the augmented correlation-consistent triple zeta (aug-cc-pVTZ) basis sets augmented with mid-bond functions for improved description of van der Waals interactions. The global minimum is characterized by the well depth of 121.36 cm-1 for the linear CN???H2 structure. The zero-order corrected dissociation energies D0 are 27.73 cm-1 and 38.75 cm-1 for the complex with para- and ortho-H2, respectively. These theoretical results obtained using our new PES are in excellent agreement with experimental values [Y. Chen and M. C. Heaven, J. Chem. Phys. 109, 5171 (1998)], 10.1063/1.477132. We perform fully quantum close coupling calculations of the rotationally inelastic cross sections of CN in collisions with para-H2 and ortho-H2 at low and intermediate energies. Corresponding rate coefficients were compared with experimental results of Brunet et al. [J. Chem. Phys. 116, 3617 (2002)], 10.1063/1.1446033. A good agreement between theoretical and experimental results was found. Fine-structure resolved cross sections were then obtained through a recoupling technique. Significant differences exist between para- and ortho-H2 results. The propensity rules between fine-structure levels are also studied, and it is shown that the cross sections for ?j = ?N transitions are much larger than those for ?j ? ?N transitions, as expected from theoretical considerations.