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Sample records for titanio iv pelo

  1. Liquid-liquid extraction (LLE) of Fe(III) and Ti(IV) by bis-(2-ethyl-hexyl) phosphoric acid (D2EHPA) in sulfuric acid medium; Extracao liquido-liquido de ferro (III) e titanio (IV) pelo acido bis-(2-etil-hexil) fosforico (D2EHPA) em meio de acido sulfurico

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Glauco Correa da; Cunha, Jose Waldemar Silva Dias da [Instituto de Engenharia Nuclear (IEN), Rio de Janeiro, RJ (Brazil). Dept. de Quimica e Materiais Nucleares; Dweck, Jo [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Escola de Quimica. Dept. de Processos Inorganicos; Afonso, Julio Carlos [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Quimica. Dept. de Quimica Analitica]. E-mail: julio@iq.ufrj.br

    2008-07-01

    This work presents a study on the separation of Fe(III) and Ti(IV) from sulfuric acid leaching solutions of ilmenite (FeTiO{sub 3}) using liquid-liquid extraction with D2EHPA in n-dodecane as extracting agent. The distribution coefficients (K{sub D}) of the elements related to free acidity and concentration of Fe(III) and Ti(IV) were determined. Free acidity was changed from 3x10{sup -2} to 11.88 mol L{sup -1} and D2EHPA concentration was fixed at 1.5 mol L{sup 1}. Recovery of final products as well as recycling of wastes generated in the process were also investigated. The LLE process as a feasible alternative to obtain high-purity TiO{sub 2}. (author)

  2. ALGUNOS CONCEPTOS SOBRE NITRURO DE TITANIO Y EL CARBURO DE TITANIO

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    ELISABETH RESTREPO PARRA

    2009-01-01

    Full Text Available En este artículo se presentan algunas características estructurales y químicas de materiales utilizados comúnmente en aplicaciones industriales como nitruro de titanio (TiN y carburo de titanio (TiC. El análisis inicial se llevó a cabo a partir de los diagramas de fase del TiN y el TiC. En ellos se observan propiedades importantes como punto de fusión, punto de evaporación, polimorfismo y solubilidad entre otros. La comprensión de estos diagramas de fase lleva a un mejor entendimiento de las características de estos materiales. Por otro lado se hizo una evaluación de los enlaces químicos que resultan en la formación de las moléculas del TiN y TiC, teniendo en cuenta que en estos compuestos se presenta una combinación de enlaces iónico, covalente y metálico, lo que les otorga excelentes propiedades eléctricas mecánicas y tribológicas. Además, se consideró la hibridación que se produce para conseguir compuestos estables.

  3. Superficies de titanio en implantes dentales de carga inmediata

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    Aparicio, C.; Padrós, A.; Planell Estany, Josep Anton; Gil, F.J.

    2008-01-01

    Se ha obtenido una capa de fosfato de calcio del mismo contenido mineral que el hueso en la superficie del implante dental de titanio, que tiene como consecuencia una muy rápida y eficaz osteointegración. Esta capa se ha obtenido mediante un método biomimético por vía termoquímica. La capa se une al substrato por enlace químico. Este hecho evita todos los inconvenientes de los métodos de recubrimiento convencionales (plasma spray, ablación láser...) cuya unión es por interacción mecánica, lo ...

  4. Revisión sobre nitruraciones láser de aleaciones de titanio

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    Pérez-Artieda, M. G.

    2010-12-01

    Full Text Available A common technique used to improve the wear response of titanium alloys is to nitride the surface, using chemical or physical vapour deposition, ion implantation or surface remelting in a nitrogen atmosphere. In this revision nitriding systems with laser technology are studied, used in titanium alloys surface treatments.For high temperature, high strength applications, titanium based alloys are an attractive light-weight alternative to steel, due to their high strength to weight ratio and corrosion resistance. In applications that require good wear resistance, titanium alloys pose a problem due to their poor tribological characteristics.Titanium alloys used with a suitable nitriding treatment could allow the replacement of steel in different applications, obtaining weight savings in fabricated components.

    Una técnica comúnmente utilizada para la mejora de la resistencia a desgaste de las aleaciones de titanio es la nitruración de la superficie, utilizando la deposición física o química de vapor, la implantación iónica o el refundido de la superficie en atmósferas que contienen nitrógeno. En esta revisión se estudian los sistemas de nitruración con tecnología láser, utilizados para tratar la superficie de diferentes aleaciones de titanio. Las aleaciones de titanio son un material alternativo al acero, muy atractivo para aplicaciones que requieren alta resistencia a temperaturas elevadas, puesto que tienen una relación resistencia-dureza elevada y buena resistencia a corrosión. En aplicaciones que requieren buena resistencia a desgaste, las aleaciones de titanio suponen un problema, debido a sus pobres características tribológicas. La utilización de aleaciones de titanio junto con un tratamiento de nitruración adecuado, podría permitir la sustitución del acero en diferentes aplicaciones, consiguiendo una disminución en el peso de los componentes fabricados.

  5. Studio della superficie degli impianti dentali in titanio: La nanotecnologia nella valutazione delle nuove superfici implantari in rapporto all'osteointegrazione dei mascellari

    OpenAIRE

    Ricci, Emanuele

    2015-01-01

    Il presente lavoro parte dalla descrizione dei processi di rimodellamento osseo mascellare a seguito della perdita di elementi dentari e la successiva riabilitazione mediante impianto dentale osteointegrato. Approfondiremo proprio i complessi aspetti dell’osteointegrazione su superfici implantari in titanio sia a livello micro che macroscopico. Nel campo dell’implantologia, infatti, il titanio risulta essere il materiale maggiormente impiegato in virtù della sua eccellente biocompatibilità...

  6. Mejoramiento de la resistencia a la corrosión del acero AISI 4140 utilizando multicapas de titanio/nitruro de titanio

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    Faber Correa

    2008-01-01

    Full Text Available El acero 4140 se utiliza ampliamente en la fabricación de partes de máquinas con durezas entre 25-35 Rockwell C. Sin embargo, su vida útil se ve limitada por su baja resistencia al desgaste y a la corrosión. Con el fin de mejorar su comportamiento frente a la corrosión se depositaron multicapas de Titanio/Nitruro de Titanio (Ti/TiN sobre substratos de acero 4140 mediante un sistema multi-blanco d.c. magnetrón sputtering a partir de un blanco de Ti de alta pureza (99,99% en una atmósfera de Ar/N2. Con el objeto de estudiar el efecto del número de capas sobre la velocidad de corrosión de las películas depositadas, se crecieron multicapas con 1, 5, 10, 15, y 20 bicapas de [Ti /TiN], manteniendo un espesor total constante de 3 um en todas ellas. Las fases existentes y composición química de los recubrimientos fueron analizados mediante espectroscopía de difracción de rayos X (XRD y espectroscopía de energía dispersiva de rayos X (EDX respectivamente. Las muestras de acero sin y con recubrimiento se caracterizaron además por Espectroscopía de Impedancia Electroquímica (EIS y curvas de polarización Tafel. Se encontró que la velocidad de corrosión tuvo una disminución alrededor del 87% en el acero recubierto con 20 bicapas de Ti/TiN en comparación al acero sin recubrir y del 25% respecto a la muestra recubierta con 1 bicapa, lo cual evidencia el efecto positivo del incremento del período en las películas delgadas basadas en multicapas de Ti/TiN.

  7. Reactividad matriz-refuerzo en compuestos de matriz de titanio pulvimetalúrgico

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    Amigó, V.

    2007-12-01

    Full Text Available The high reactivity of titanium and the facility of the same one to form intermetallics makes difficult obtaining composites with this material and brings the need in any case of covering the principal fibres used as reinforcement. To obtain composites of titanium reinforced with ceramic particles is proposed in this paper, and for this reason it turns out to be fundamental to evaluate the reactivity between the matrix and reinforcement. Both titanium nitride and carbide (TiN and TiC are investigated as materials of low reactivity whereas titanium silicide (TiSi2 is also studied as materials of major reactivity, already stated by the scientific community. This reactivity will be analyzed by means of scanning electron microscopy (SEM there being obtained distribution maps of the elements that allow to establish the possible influence of the sintering temperature and time. Hereby the matrix-reinforcement interactions are optimized to obtain suitable mechanical properties.

    La elevada reactividad del titanio y la facilidad del mismo en formar intermetálicos dificulta la obtención de compuestos con este material y la necesidad, en todo caso, de recurrir al recubrimiento de las principales fibras utilizadas como refuerzo. Se propone obtener compuestos de titanio reforzados con partículas cerámicas y, por ello, resulta fundamental evaluar la reactividad entre los diferentes materiales. Se investiga como materiales de baja reactividad el nitruro y carburo de titanio y como materiales de mayor reactividad, ya constatada por la comunidad científica, el TiSi2. Esta reactividad se analizará mediante microscopía electrónica de barrido obteniéndose mapas de distribución de los elementos, que permiten establecer la posible influencia de la temperatura de sinterización y el tiempo de permanencia a éstas. De esta manera, se optimiza en lo posible las interacciones matriz-refuerzo para obtener unas propiedades mec

  8. Síntesis de nitruro de titanio mediante láser y energía solar concentrada

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    García, I.

    1998-04-01

    Full Text Available The possibility of the employment of solar energy concentrated by Fresnel lens is investigated in order to synthesize materials by gas-solid reaction. These first results are compared by two similar techniques as high power laser and xenon are lamp. The TiN coatings obtained with xenon are lamp and Fresnel lens are homogenous, without pores or defects, with a uniform thickness of about 6 μm for treatments of 2 min. The good quality of the TiN coating for all the testing conditions was confirmed by the x-ray diffraction measurements.

    Se presenta la utilización de la energía solar concentrada mediante lentes de Fresnel para la síntesis de materiales por reacción gas-sólido. Estos primeros resultados sobre nitruración superficial de titanio y aleaciones de titanio se comparan con los obtenidos con técnicas similares como el láser de alta potencia y la lámpara de descarga de xenón. Las capas de nitruro de titanio obtenidas mediante energía solar concentrada por lentes de Fresnel y lámpara de xenón son homogéneas, sin grietas ni defectos, y con un espesor uniforme de 6 μm en tiempos de sólo 2 min. La buena calidad de estas capas se confirma mediante difracción de rayos X.

  9. Efectos de la adición del tantalio sobre la biocompatibilidad de los implantes de titanio

    OpenAIRE

    Bolaños Rodríguez, Víctor

    2016-01-01

    Programa de doctorado: Tecnología Industrial (Bienio 2006-2008). La fecha de publicación es la fecha de lectura [ES]El desarrollo de esta Tesis trata de comprobar el comportamiento a nivel de biocompatibilidad y osteointegración de la adición de Tantalio en diversas aleaciones de Titanio como elemento base. Nos preguntamos ¿ porqué utilizar Tantalio en estas aleaciones ?. Todo surge por unas intervenciones quirúrgicas realizadas en el Hospital Universita...

  10. Caracterización de la capa formada por nitruración gaseosa del titanio a alta temperatura

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    Rodríguez, D.

    2000-06-01

    Full Text Available Titanium and Ti6Al4V alloy are biocompatible materials. However, their lack of good wear resistance limits their use for some biomedical applications. Surface hardening by nitriding has been studied in order to improve wear resistance of titanium. The results showed an increase of surface hardness, over 300% when compared to non-treated samples. X-ray diffraction data of the surface of the treated samples showed the existence of titanium nitrides, mainly ε-nitrides (Ti2N, although δ−nitrides (TiN were also detected. Selected area diffraction pattern in transmission electron microscope (TEM of nearsurface regions detected the existence of ε-nitrides. TEM observations of regions at depths over 5 μm did not registered any nitride. Therefore, the results suggest that the studied treatment could be used to reduce wear in biomedical applications with light and medium loads.

    El titanio y la aleación Ti6Al4V son materiales que presentan una excelente biocompatibilidad, si bien la falta de una buena resistencia al desgaste dificulta su uso en diversas aplicaciones biomédicas. Se ha estudiado el endurecimiento superficial del titanio por medio de la nitruración gaseosa con el fin de mejorar su resistencia al desgaste. Los resultados obtenidos muestran un gran incremento en la dureza superficial, de un 300% con relación a las muestras no tratadas. Los datos de las difracciones de rayos X de la superficie de las muestras tratadas muestran la existencia de nitruros de titanio, principalmente nitruros-ε (Ti2N, si bien también fueron detectados nitruros-δ (TiN. La difracción de electrones realizada en microscopio electrónico de transmisión (TEM de regiones subsuperficiales de las muestras tratadas también detectaron la existencia de nitruros-ε. Observaciones con TEM de zonas a distancias de la superficie superiores a 5 μm no revelaron la existencia de nitruros. Por tanto, los resultados obtenidos indican que el tratamiento de

  11. Synthesis and characterization photocatalyst of titanium oxide obtained by the Pechini; Sintese e caracterizacao fotocatalitica do oxido de titanio obtido pelo Metodo Pechini

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, P.C.; Costa, A.C.F.M.; Lira, H.L. [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Departamento de Engenharia de Materiais; Sasaki, J.M. [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil). Departamento de Fisica; Santos, S.K., E-mail: pollyanacae@yahoo.com.br [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Departamento de Engenharia Quimica

    2011-07-01

    The photocatalysis using TiO{sub 2} semiconductor has shown great efficiency in the treatment of toxic pollutants and non-biodegradable materials, commonly present in air and domestic and industrial effluents. Thus, the aim of this work is to study the evaluation of photocatalytic activity of TiO{sub 2} samples synthesized by the Pechini method at a ratio of citric acid / metal cation of 2:1 and 4:1. The synthesized samples were characterized by X-ray diffraction, quantification of phases using the Rietveld method of refinement of the structure and after analyzed in photocatalytic bench tests using methyl red dye. The results showed that in a 2:1 ratio, the sample resulted in the formation of 100% of anatase phase, while in the 4:1 ratio sample showed 73.51% of anatase phase and 10.5% of rutile phase. The 4:1 sample showed the best performance discoloring over 70% of the dye for a period close to 24h. (author)

  12. Obtención de recubrimientos de hidroxiapatita sobre titanio mediante el método biomimético

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    Paz, A.

    2011-04-01

    Full Text Available In this work, a study about the deposition of hydroxyapatite on a titanium substrate employing the biomimetic method is presented. A solution with high content of calcium and phosphorus (SCS was used. In addition, activation of titanium with hydrogen peroxide and hydrochloric acid and a subsequent heat treatment was performed. The characterization of materials used and the coating obtained was carried out by Infrared Spectroscopy (FT-IR, X-ray Diffraction (XRD, Scanning Electron Microscopy (SEM and Energy Dispersive X-ray Spectroscopy (EDX. As a result of the activation processes a hydrated titanium oxide was formed. On the active surface, a coating of hydroxyapatite was obtained after a period of 24 h, which has a thickness of about 2-4 μm.

    En el presente trabajo se realizó un estudio de la deposición de hidroxiapatita sobre un sustrato de titanio mediante el método biomimético. Para ello se empleó una disolución con elevado contenido de calcio y fósforo (SCS. Además, se realizó la activación del titanio a partir de la aplicación de procesos de oxidación con peróxido de hidrógeno y ácido clorhídrico con un posterior tratamiento térmico. La caracterización de los materiales empleados, así como de los recubrimientos obtenidos, se realizó mediante Espectroscopia Infrarroja (FT-IR, Difracción de Rayos X (DRX, Microscopia Electrónica de Barrido (MEB y Espectroscopia de Energía Dispersiva de Rayos X (EDX. Como resultado del proceso de activación se formó un óxido de titanio hidratado. Sobre la superficie activada se logró obtener un recubrimiento de hidroxiapatita en un período de 24 h, caracterizado por su elevada densidad y cristalinidad y por presentar un espesor entre 2-4 μm.

  13. Osteosíntesis maxilofacial con titanio Maxillofacial osteosynthesis with titanium

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    S. Martínez-Villalobos Castillo

    2004-12-01

    Full Text Available El Titanio es un elemento cuyas propiedades han posibilitado avances impresionantes en la industria aerospacial y química de nuestros días. Podríamos decir que ya es el metal del futuro. Como biomaterial utilizado en las técnicas de osteosíntesis se ha consolidado como de primera elección frente al acero. Su extraordinaria biocompatibilidad y las posibilidades que la biometalurgia ofrece le están abriendo las puertas en numerosos campos de aplicación médica como por ejemplo la Odontología. En nuestra especialidad, y con las salvedades que analizaremos para la cirugía pediátrica, continua siendo de primera elección en virtud de sus propiedades físico-químicas y de las refinadas manufacturas que la industria pone a nuestra disposición. Los biomateriales reabsorbibles, al margen de la cirugía pediátrica de tercio medio y craneofacial, son en la actualidad y a nuestro juicio alternativas menos seguras y contrastadas, con un futuro esperanzador que se abre camino poco a poco en indicaciones como la cirugía ortognática y en la traumatológica del tercio medio facial del adulto. En cualquier caso, la relación coste/beneficio es un aspecto que también se debería considerar en nuestra elección.Titanium is an element whose properties have made possible impressive advances in the aerospace and chemical industry of our days. We could say that it is already the metal of the future. As biomaterial used in the osteosynthesis techniques one has consolidated like of first choice in front of the steel. Its extraordinary biocompatibility and the possibilities that biometallurgy offers to us are opening the doors in numerous fields of medical application like for example the Odontology. In our speciality, and with the reservations that we will analyze for the paediatric surgery, it continues being of first choice by virtue of its properties and of the refined manufactures that the industry makes our available. The resorbables biomaterials

  14. Efectos sobre la salud en los trabajadores expuestos al dióxido de titanio

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    Angélica Faviola Gutiérrez Antezana

    Full Text Available Objetivo principal: Revisar en la literatura científica si existen problemas en la salud y cuáles son, en los trabajadores expuestos al dióxido de titanio. Métodos: Revisión sistemática de la literatura científica recogida en las bases de datos MEDLINE (PubMed, Cochrane Library Plus, LILACS, OSH UPDATE, Biblioteca de la Organización internacional del Trabajo (OIT, Web of Science, IBECS. Los términos utilizados como descriptores y texto libre fueron: MeSH (thesaurus desarrollado por la U. S. National Library of Medicine, considerándose adecuados "Titanium", "Ocupational Exposure" y "Ocupational Diseases". Resultados: Se recuperaron 61 artículos. Tras aplicar los criterios de inclusión y exclusión obteniéndose 14 artículos (4 estudios de cohortes, 3 estudios de casos y controles, 1 estudio observacional descriptivo transversal, 4 estudios de casos clínicos y 2 estudios de serie de casos. En los cuales la población estudiada fue masculina en aproximadamente 90%. Entre los trabajadores expuestos se encuentran: Pintores, albañiles, mecánicos y empleados encargados de la fabricación de joyería artificial, pintura, papel, lacas, barnices y productores de TiO2. Las patologías encontradas con mayor frecuencia fueron las alteraciones respiratorias, seguidas de alteraciones cardiovasculares, alteraciones genéticas por exposición a nanopartículas de TiO2. No se encontró asociación entre exposición al TiO2 y cáncer pulmonar. Tampoco se encontró evidencia del incremento de la mortalidad por exposición. Discusión/Conclusión: Con los estudios seleccionados, no se puede establecer una asociación significativa entre exposición laboral al TIO2 y efectos sobre la salud, pese a que se encuentran descritas alteraciones respiratorias, cardiovasculares y sistémicas en trabajadores expuestos.

  15. Estudio comparativo de los métodos de fabricación aditiva para el titanio y sus aleaciones

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    Romero Fuentes, Sergio

    2017-01-01

    El tema del proyecto que se plantea es el proceso de producción industrial de objetos conocido como fabricación aditiva o “Additive manufacturing”. Concretamente, se estudiará su aplicación a la fabricación de piezas de aleaciones de titanio. El proyecto recogerá los orígenes y evolución de la fabricación aditiva, dando una visión global de las distintas tecnologías y métodos aplicados a los distintos materiales. También revelará de forma general el estado del arte actual de la fabricación ad...

  16. Comportamiento de la corrosión de diferentes aleaciones de titanio y tantalio en contacto con fluidos fisiológicos

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    Dueñas Santacruz, Ernesto Diego

    2013-01-01

    Programa de doctorado: Tecnología industrial El objetivo de la tesis es el estudio del comportamiento de diferentes aleaciones de titanio y tantalio en contacto con fluidos fisiológicos. En concreto, se trata de tres aleaciones con un contenido de un cinco, un quince y un veinticinco por ciento de tantalio. En cuanto al fluido fisiológico, se trata de una disolución Ringer.

  17. O Goodwill gerado pelo Passivo

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    Eliseu Martins

    2017-01-01

    Full Text Available Objetivo: O objetivo deste estudo está relacionado à figura do Goodwill originado do Passivo de uma empresa, ou seja, não é a do Goodwill normalmente constituído pelos Ativos Intangíveis capazes de produzir uma rentabilidade anormal e que fazem com que o valor da entidade como um todo, em funcionamento, seja maior do que a soma algébrica dos valores justos de seus elementos patrimoniais. Trata-se de uma visão que se pode entender como novidade para muitos, ou seja, a do Goodwill originado do Passivo e, não, dos Ativos de uma empresa. Existem empresas que sequer conseguem remunerar o risco que seus Ativos carregam, mas podem apresentar Goodwill devido à forma com que suas atividades são financiadas. Método: Como ensaio, são apresentados conceitos básicos e de formulação, normalmente utilizados em avaliações de empresas. Na sequência, são apresentadas simulações que demonstram, de forma objetiva, o verdadeiro sentido técnico da formulação. Resultados: Sabendo-se que determinadas agências estatais de desenvolvimento e o próprio BNDES acabam financiando determinadas atividades com taxas de juros generosas, este estudo apresenta ainda um caso real de existência de Goodwill originado do Passivo de uma empresa brasileira. Contribuições: Este trabalho tem como uma de suas principais contribuições a exposição de um tema que é praticamente desconhecido no mundo acadêmico, totalmente desconsiderado pelas normas e legislações contábeis, mas presente no mundo dos analistas e investidores mais bem preparados, e o faz pela não disseminação desse conceito, com apresentação e redação acessíveis a todos os níveis de leitores.

  18. Extração líquido-líquido de ferro(III e titânio(IV pelo ácido bis-(2-etil-hexil fosfórico (D2EHPA em meio de ácido sulfúrico Liquid-liquid extraction (LLE of Fe(III and Ti(IV by bis-(2-ethyl-hexyl phosphoric acid (D2EHPA in sulfuric acid medium

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    Glauco Corrêa da Silva

    2008-01-01

    Full Text Available This work presents a study on the separation of Fe(III and Ti(IV from sulfuric acid leaching solutions of ilmenite (FeTiO3 using liquid-liquid extraction with D2EHPA in n-dodecane as extracting agent. The distribution coefficients (K D of the elements related to free acidity and concentration of Fe(III and Ti(IV were determined. Free acidity was changed from 3x10-2 to 11.88 mol L-1 and D2EHPA concentration was fixed at 1.5 mol L-1. Recovery of final products as well as recycling of wastes generated in the process were also investigated. The LLE process as a feasible alternative to obtain high-purity TiO2.

  19. Procesamiento, caracterización y ensayos biológicos de titanio modificado electroquímicamente para implantes dentales

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    Sandra Liliana Arias Suarez

    2013-01-01

    Full Text Available Las aplicaciones biomédicas del titanio y sus aleaciones son posibles debido a que éste material posee características deseables para el reemplazo de huesos, incluyendo buenas propiedades mecánicas, excelente resistencia a la corrosión y alta biocompatibilidad. Sin embargo, una de sus principales limitaciones radica en el encapsulamiento del material por un delgado tejido fibroso, el cual puede estar relacionado con el aflojamiento del implante. Como una alternativa para dar solución a esta limitación, en el presente trabajo se realizaron modificaciones químicas y electroquímicas a la superficie del titanio para evaluar su influencia en la oseointegración de los implantes, para lo cual se realizaron ensayos in vitro del material en contacto con osteoblastos. Los resultados de caracterización por microscopía electrónica de barrido (SEM, de medición de parámetros de rugosidad y de morfología de los osteoblastos, indicaron que existe una relación entre la rugosidad superficial y la adhesión de las células óseas. Las superficies con los mayores parámetros verticales de rugosidad, para las condiciones evaluadas, permitieron una mejor adhesión celular. Estos resultados sugieren que la combinación de técnicas químicas y electroquímicas puede permitir el control de la rugosidad de los implantes dentales de titanio y, por tanto, la optimización de su oseointegración.

  20. Caracterización electroquímica de dos materiales de implante tipo titanio para aplicaciones en implantología oral

    OpenAIRE

    Echavarría Velásquez, Alejandro Iván; Arroyave Posada, Carlos Enrique

    2002-01-01

    Se presentan los resultados de las evaluaciones electroquímicas para dos materiales de implante certificados para uso odontológico: aleación Ti 6Al 4V (TAV) y titanio comercialmente puro (Ti) en solución de Ringer y en solución de saliva artificial, por medio de las técnicas de espectroscopia de impedancia electroquímica (EIS) y curvas de polarización potenciodinámicas (CP). Los resultados EIS mostraron que los arcos exhibidos en los diagramas de Nyquist disminuyen con el tiempo de inmersión....

  1. Degradación fotocatalítica de fluoresceína sódica con óxido de titanio

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    Miguel Ángel Gutiérrez Díaz

    2003-01-01

    Full Text Available Se presenta un experimento sencillo de fotocatálisis, el cual consiste en preparar diferentes concentraciones de un compuesto orgánico a degradar, en este caso sal sódica de fluoresceína, adicionándoles óxido de titanio e irradiándolas con luz UV de 354 nm, en agitación continua y burbujeo de aire. La reacción se llevó a cabo en un cuarto oscuro y a temperatura ambiente. Los resultados obtenidos se graficaron para observar la cantidad de compuesto degradado.

  2. IVS Organization

    Science.gov (United States)

    2004-01-01

    International VLBI Service (IVS) is an international collaboration of organizations which operate or support Very Long Baseline Interferometry (VLBI) components. The goals are: To provide a service to support geodetic, geophysical and astrometric research and operational activities. To promote research and development activities in all aspects of the geodetic and astrometric VLBI technique. To interact with the community of users of VLBI products and to integrate VLBI into a global Earth observing system.

  3. O MARKETING ORIENTADO PELO MERCADO

    Directory of Open Access Journals (Sweden)

    Sandro Deretti

    2005-11-01

    -style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} -->

    Resumo

    A economia globalizada determinou alterações profundas no processo estratégico das empresas, propiciando oportunidades e ameaças em todos os segmentos e exigindo produtos e serviços competitivos. Assim, diante deste cenário extremamente desafiador, a função marketing dentro das empresas assume maior importância no desenvolvimento de vantagens competitivas sustentáveis e na redução das incertezas. Muitos autores consideram que a orientação para o mercado seja a essência da filosofia empresarial que leva ao sucesso nesta luta pelos mercados porque investiga desejos e necessidades do consumidor. Este artigo faz uma contextualização dos principais trabalhos que colaboraram para a estruturação do conceito de marketing e da orientação para o mercado.

     

  4. Degradación fotocatalítica del ibuprofeno empleando dióxido de titanio

    Directory of Open Access Journals (Sweden)

    Víctor Sarria

    2010-06-01

    Full Text Available En este artículo se presenta la exploración de la degradación de un contaminante emergente, el ácido 2-(p-isobutilfenil propiónico (ibuprofeno, IB, en solución acuosa, por medio de fotocatálisis heterogénea. Se evaluó la eficiencia de la degradación de este antiinflamatorio usando dióxido de titanio Degussa P-25 en suspensión o inmovilizado en anillos de vidrio. Se evaluó el efecto de la cantidad de catalizador en suspensión (0, 50 y 200 mg/L de TiO2. Los resultados indican que con 200 mg/L de TiO2 y 50 mg/L de IB se obtiene la mayor eficiencia con una remoción de 80,64% de IB en 240 minutos. This study explores the degradation of an emerging contaminant, ibuprofen (IB in water through photocatalysis heterogeneous. For this aim, the efficiency of the degradation of this anti-inflammatory using titanium dioxide Degussa P-25 in suspension or immobilized on a glass rings, was evaluated. The effect of the amount of catalyst in suspension, tested 0, 50 and 200 mg/L TiO2 was also evaluated. The results of this study show that, the best results of 80.64% degradation of initial IB were obtained during 240 minutes with 200 mg/L TiO2 and 50 mg/L of IB.

  5. Asteroids IV

    Science.gov (United States)

    Michel, Patrick; DeMeo, Francesca E.; Bottke, William F.

    . Asteroids, like planets, are driven by a great variety of both dynamical and physical mechanisms. In fact, images sent back by space missions show a collection of small worlds whose characteristics seem designed to overthrow our preconceived notions. Given their wide range of sizes and surface compositions, it is clear that many formed in very different places and at different times within the solar nebula. These characteristics make them an exciting challenge for researchers who crave complex problems. The return of samples from these bodies may ultimately be needed to provide us with solutions. In the book Asteroids IV, the editors and authors have taken major strides in the long journey toward a much deeper understanding of our fascinating planetary ancestors. This book reviews major advances in 43 chapters that have been written and reviewed by a team of more than 200 international authorities in asteroids. It is aimed to be as comprehensive as possible while also remaining accessible to students and researchers who are interested in learning about these small but nonetheless important worlds. We hope this volume will serve as a leading reference on the topic of asteroids for the decade to come. We are deeply indebted to the many authors and referees for their tremendous efforts in helping us create Asteroids IV. We also thank the members of the Asteroids IV scientific organizing committee for helping us shape the structure and content of the book. The conference associated with the book, "Asteroids Comets Meteors 2014" held June 30-July 4, 2014, in Helsinki, Finland, did an outstanding job of demonstrating how much progress we have made in the field over the last decade. We are extremely grateful to our host Karri Muinonnen and his team. The editors are also grateful to the Asteroids IV production staff, namely Renée Dotson and her colleagues at the Lunar and Planetary Institute, for their efforts, their invaluable assistance, and their enthusiasm; they made life as

  6. Utilidad de la conformación del túnel liso antes de usar limas rotatorias endodónticas de níquel-titanio

    Directory of Open Access Journals (Sweden)

    Javier Laureano Nino Barrera

    Full Text Available Introducción: para prevenir la fractura de instrumentos endodonticos actualmente se siguen investigando materiales, técnicas y diseños los cuales buscan reducir su incidencia. La conformación de túnel liso (Glide Path se ha propuesto con este fin, sin embargo su utilidad ha sido controvertida. Objetivo: comprobar teóricamente mediante la utilización de un análisis de elementos finitos, la utilidad de la conformación de túnel liso, antes de la utilización de limas rotatorias endodonticas de níquel-titanio. Métodos: se realizó una simulación numérica mediante un análisis de elementos finitos, para lo cual se construyeron modelos matemáticos de las limas rotatorias de níquel-titanio S1 y S2 de la serie Protaper®. Con el software Simulation multyphisics de Autodesk® se programaron las propiedades mecánicas de las limas y un límite de falla por fractura de 1270,588 MPa. Posteriormente se aplicó el torque recomendado por el fabricante y se fijo la punta del instrumento (sin conformación de túnel liso aplicando allí restricciones en todos los grados de libertad.Para simular la realización de la conformación de túnel liso, se aplicaron restricciones en todos los grados de libertad a una determinada distancia de la punta del instrumento, simulando de esta forma que la punta del instrumento permanecía libre. Resultados: al fijar la punta de las limas, los esfuerzos máximos fueron 1545,77 MPa para la S1 y 1306,47 MPa para la S2, observando fractura de los instrumentos. Al fijar las limas a distancia de la punta no se observó fractura. Conclusiones: se demostró teóricamente que al impedir que se atrapen la punta de las limas, se previene su fractura y que dicho atrapamiento se evita con una conformación de túnel liso, por lo que se concluye que este procedimiento es útil para prevenir la fractura de los instrumentos rotatorios de níquel-titanio.

  7. Estudio del efecto de la adición de titanio en la microestructura y el efecto magnetocalórico en Ni-Mn-In-Co

    OpenAIRE

    Anaut Ezquer, Borja

    2015-01-01

    Se ha estudiado el efecto de la adición de pequeñas cantidades de titanio en la microestructura, propiedades mecánicas y efecto magnetocalórico de una aleación metamagnética con memoria de forma Ni-Mn-In-Co. Se ha visto que la adición de Ti produce una mejora de las propiedades mecánicas, como la microdureza y el límite elástico, a través de la reducción del tamaño de grano de la aleación. Sin embargo el Ti disminuye el máximo efecto magnetocalórico alcanzable por la aleación, aunque el rango...

  8. Soldadura por fricción lineal de las aleaciones de titanio: caracterización de una soldadura longitudinal mediante ensayos a tracción

    OpenAIRE

    Grand, Arnaud

    2006-01-01

    Doble titulació La unión entre los álabes y el disco de una turbina de avión está en plena evolución por la aplicación del proceso de soldadura por fricción lineal (LFW) a las aleaciones de titanio. Ello permite conseguir una pieza única llamada blisk (blade + disk). Hasta ahora, la unión álabe / disco se hacía por un ensamblaje mecánico, pero estos sufren un fenómeno de fatiga por fretting en el punto de anclaje. A parte de evitar ese fenómeno, la soldadura por fricción lin...

  9. Propiedades mecánicas de tres marcas de arcos ortodóncicos de níquel-titanio termoactivados. Estudio in vitro

    OpenAIRE

    Ramos Torres, Viviana; Soldevilla Galarza, Luciano; Mattos Vela, Manuel

    2014-01-01

    La selección óptima de los alambres ortodóncicos permite al profesional realizar el tratamiento de manera eficiente; por ello, se requiere el conocimiento de las propiedades mecánicas básicas, las cuales no son reveladas por sus fabricantes. El estudio tuvo como objetivo comparar las propiedades mecánicas (tensión en la zona de activación constante, elongación en la zona de activación constante, resistencia máxima y límite de ruptura) de tres marcas de alambres ortodóncicos de níquel-titanio ...

  10. Adolescentes e crack: pelo caminho das pedras

    Directory of Open Access Journals (Sweden)

    Eduardo Tomm

    2013-12-01

    Full Text Available Nos últimos anos, a sociedade tem observado uma rápida expansão no uso de crack, especialmente por adolescentes e jovens. É evidente a necessidade de ouvir esses sujeitos de para melhor compreender sua situação. Para atender a essa necessidade, desenvolvemos uma pesquisa qualitativa descritivo-exploratória cujo foco foi um grupo terapêutico para adolescentes usuários de crack que ocorreu no Centro de Atenção Psicossocial Infanto-Juvenil (CAPSi em uma cidade do interior do Rio Grande do Sul, Brasil. Amparados na modalidade expost-facto, analisamos documentos produzidos nessa instituição. O resultado foi uma cartografia que acompanhou discursivamente os adolescentes pelo "caminho das pedras": os lugares, tratamentos, pessoas, ideias e momentos dos quais falam.

  11. Caracterización de tintas de titanio dopadas con óxidos metálicos

    Directory of Open Access Journals (Sweden)

    Gil, A.

    2009-02-01

    Full Text Available Sol-gel Inks based in titanium diisopropoxide bisacetylacetonate were prepared to develop nanostructures using the direct ink writing technique. This technique facilitates the structuring of materials by micro extrusion for the fabrication of three-dimensional photonic crystals with high refractive index at micro and nano scale. Thermal treatment of extruded nanostructures at high temperatures to transform them on TiO2 structures with high refractive index causes grain growth of TiO2. Calcining at higher temperatures must be avoided to prevent significant grain growth that can cause degradation of optical properties of the structure. Low temperatures of calcination lead to a poor mechanical stability of the structures. To increase the mechanical stability of the structures avoiding the growth of grain size during calcination, inks based on titanium diisopropoxide bisacetylacetonate were doped with niobium and zinc compounds. Using high-resolution X-ray diffraction, we studied the influence of the niobium and zinc oxides over the grain growth of TiO2 calcinating at different temperatures, and doing so evaluating the use of these dyes doped photonic applications. The results indicate that the addition of metal oxides has a significant effect on temperature conversion of anatase to rutile and depresses the grain growth of TiO2.

    Se prepararon tintas de Diisopropoxido de titanio bis(acetilacetonato por el método sol-gel para aplicar en la elaboración de nanoestructuras mediante la técnica de escritura directa. Esta técnica permite estructurar materiales con alto índice de refracción a escala micro y nanométrica en tres dimensiones mediante extrusión, para elaborar cristales fotónicos. El tratamiento de las nanoestructuras extruidas a temperaturas elevadas para transformarlas en otras de TiO2 con alto índice de refracción, provoca crecimiento de grano del TiO2

  12. Effect of vanadium on the obtaining of the titanium dioxide by Sol-Gel Method; Efeito do vanadio na obtencao de dioxido de titanio pelo Metodo Sol-Gel

    Energy Technology Data Exchange (ETDEWEB)

    Granado, S.R.; Silva, D.W.; Lopes, S.A.; Cavalheiro, A.A., E-mail: sandrogranado02@gmail.com [Universidade Estadual de Mato Grosso do Sul (CPTREN/UEMS), Navirai, MS (Brazil). Centro de Pesquisas Tecnologicas em Recursos Naturais

    2011-07-01

    The obtaining of transition metal modified titanium dioxide (TiO{sub 2}) can be a promising path to promote changes in crystal structure of anatase phase in order to displace the band gap toward frequencies near to visible region. The insertion of the heterovalent ions such as vanadium can be shift the titanium coordination number in the anatase matrix, leading to important changes in the photonic characteristics of the material. In Sol-Gel method, the presence of the non alkoxide precursors can affects the stability of the solution and the gelifying process, with consequences on the characteristics of the material. In this work, it was investigated the effect of 5mol% of vanadium by thermal analysis of the dried gel and XRD and adsorption isotherm in the samples obtained at different temperatures. The decomposition steps of the precursor were associated to phase formation in the material, leading to conclusion that the presence of vanadium affects the stability of anatase phase. (author)

  13. Turkevich method for silver/titanium dioxide nanoparticles with antimicrobial application in polymers systems;Obtencao de nanoparticulas de prata/dioxido de titanio pelo metodo Turkevich para aplicacoes antimicrobiais em matrizes polimericas

    Energy Technology Data Exchange (ETDEWEB)

    Olyveira, Gabriel Molina de; Pessan, Luiz Antonio, E-mail: gmolyveira@yahoo.com.b, E-mail: acarvalho@ufscar.b [Universidade Federal de Sao Carlos (PPG-CEM/UFSCar), SP (Brazil). Programa de Pos-Graduacao em Ciencia e Engenharia de Materiais; Carvalho, Antonio Jose Felix de [Universidade Federal de Sao Carlos (UFSCar), Sorocaba, SP (Brazil)

    2009-07-01

    Titanium dioxide nanoparticles were covered with silver nanoparticles using Turkevich Method or citrate reduction method. Silver and titanium dioxide has proved antimicrobial properties then the nanocomposite can be successful incorporated in polymer systems. Silver nitrate was reduced by sodium citrate in the presence of poly(vinyl pyrrolidone)(PVP) resulting in nano-Ag/TiO{sub 2} stabilized suspension. It was tested ammonia hydroxide in the synthesis to avoid the nanoparticles growth. The Ag/TiO{sub 2} nanoparticles were characterized with X-ray diffraction (XRD), Scanning electron microscopy (SEM) and x-ray photoelectron spectroscopy (XPS). The best system of coloidal nanoparticles was that one with Poly(vinyl pyrrolidone) and ammonia in the synthesis. (author)

  14. Morphological and structural evolution of the anatase phase of silicon modified titanium dioxide obtained by Sol-gel; Evolucao estrutural e morfologica da fase anatase de dioxido de titanio modificada com silicio obtido pelo Metodo Sol-Gel

    Energy Technology Data Exchange (ETDEWEB)

    Lopes, S.A.; Oliveira, C.T.; Ciola, R.A.; Cavalheiro, A.A., E-mail: silvanicelopes@gmail.com [Universidade Estadual de Mato Grosso do Sul (CPTREN/UEMS), Navirai, MS (Brazil). Centro de Pesquisas Tecnologicas em Recursos Naturais

    2011-07-01

    The photonic efficiency of the titanium dioxide photocatalyst is dependent on the crystalline structure and the anatase phase presents high efficiency in the border region between the UV-B and UV-A, with a redox potential sufficient to generate hydroxyl radicals and superoxide ion in order to oxidate organic compounds. In spite of the organic matter degradation effectiveness, the efficiency can be reduced substantially due to the presence of crystalline defects, which act as premature recombination centers of the electron-hole pair. The increasing of calcining temperature allows the elimination of most of these defects, but the structural ordering at temperatures around 600°C eventually leads to the phase transition toward rutile, which is not photoactive. In this work, it was demonstrated through FTIR and XRD that the silicon modifier presence stabilizes the anatase phase even at temperatures as high as 900°C. (author)

  15. Effect of the calcining temperature on the porosity of the titanium dioxide powders obtained by Polymeric Precursor Method; Efeito da temperatura de calcinacao na porosidade de pos de dioxido de titanio obtidos pelo Metodo dos Precursores Polimericos

    Energy Technology Data Exchange (ETDEWEB)

    Silva, D.W.; Granado, S.R.; Ciola, R.A.; Cavalheiro, A.A., E-mail: douglas_levis@hotmail.com [Universidade Estadual de Mato Grosso do Sul (CPTREN/UEMS), Navirai, MS (Brazil). Centro de Pesquisas Tecnologicas em Recursos Naturais

    2011-07-01

    Ceramics materials obtained by Polymeric Precursor Method exhibit mechanisms of the pore formation and elimination dependents on the decomposition kinetics of the residual organic matter of the polyester. The mechanism of pore elimination seems to occur by disrupting of the wall among the pores because it leads to the consequent pore coalescence and increasing in pore volume, which posses higher pore diameters. In this case, it was observed that the porosity decreasing occurs by pore wall moving after that the residual organic matter is eliminated from the pore inside. The pore diameter associated to the highest volume desorption occurred for the material obtained after calcining at 450°C is approximately 1,7 nm, what seems to be related to the amorphous carbon accumulated inside the pores, once that the pore volume decreases more effectively for the material obtained by calcining at 550°C, making the maximum volume situates at 2,0 nm. (author)

  16. IV treatment at home

    Science.gov (United States)

    ... Other IV treatments you may receive after you leave the hospital include: Treatment for hormone deficiencies Medicines for severe nausea that cancer chemotherapy or pregnancy may cause Patient-controlled analgesia (PCA) for pain (this is IV ...

  17. Tratamento da leishmaniose tegumentar americana pelo niridazol

    Directory of Open Access Journals (Sweden)

    Miroslau Constante Baranski

    1970-08-01

    Full Text Available Foi empregue o niridazol um derivado do nitrotiazol, em doze pacientes com leishmaniose tegumentar americana. Em todos êles, o diagnóstico clínico da doença foi confirmado pela biópsia das lesões e em oito dêles também pela positividade da intradetermorreação de Montenegro. Oito pacientes tinham lesões mucosas metastáticas em atividade e lesões cutâneas iniciais cicatrizadas há tempo mais ou menos longo. Dois apresentavam concomitância de lesões cutâneas e mucosas em atividade, e dois tinham lesões cutâneas exclusivas. A duração da doença variou de 2 meses a 32 anos. A posologia diária do niridazol foi uniformememente de 25 mg/kg de pêso corpóreo. O medicamento foi administrado por via oral, em duas tomadas diárias, sempre com o doente internado em hospital. Quando a tolerância o permitia, o paciente recebia cinco séries de tratamento de 10 dias de duração cada, intercaladas por períodos áe suspensão da droga de 10 dias entre uma série e outra. Isso foi possível em 10 dos 12 pacientes. O tratamento foi bem tolerado em 5 doentes e de tolerância regular em 4. Mal tolerado em um paciente pela ocorrência de alucinações e excitação mental e interrompido pela péssima tolerância em dois doentes devido ao aparecimento de convulsões generalizadas com perda da consciência. O tratamento acompanhou-se de grande incidência, de efeitos colaterais. A ocorrência de para-efeitos mais intensos não foi devida às más condições hepáticas. Provas de função hepática. hemogramas, estudos bioquímicos do sangue e exames de urina, realizados antes, durante e após o tratamento, não revelaram alterações significativas. Biópsias hepáticas por punção com agulha em dez doentes, prévias e posteriores ao tratamento, não detectaram lesões hepáticas que pudessem ser atribuídas à medicação. O seguimento dos doentes prolongou-se pelo prazo de dois a 36 meses apos o tratamento. Alterações eletrocardiogr

  18. Generation IV national program

    International Nuclear Information System (INIS)

    Preville, M.; Sadhankar, R.; Brady, D.

    2007-01-01

    This paper outlines the Generation IV National Program. This program involves evolutionary and innovative design with significantly higher efficiencies (∼50% compared to present ∼30%) - sustainable, economical, safe, reliable and proliferation resistant - for future energy security. The Generation IV Forum (GIF) effectively leverages the resources of the participants to meet these goals. Ten countries signed the GIF Charter in 2001

  19. Modificación del comportamiento tribológico de zirconio y titanio mediante implantación de nitrógeno

    Directory of Open Access Journals (Sweden)

    García, J. A.

    2000-06-01

    Full Text Available This paper gathers the studies of the effects introduced by Nitrogen implantation on Ti and Zr. Atomic and molecular Nitrogen have been implanted on Titanium and Zirconium samples to investigate the role of these elements in the nitrides precipitation. In all cases an increase in microhardness, which in some cases was greater than 80% was found out. Moreover was observed improvements in the wear resistance and a decrease in the friction coefficient. AES and XPS spectroscopy revealed that nitride precipitation in titanium is more significant for the high atomic doses of Nitrogen implantation.

    En el presente trabajo se estudian los efectos introducidos por la implantación de nitrógeno atómico y molecular en Ti y Zr comercialmente puros. Se relacionan los cambios en la dureza superficial y coeficiente de fricción con los cambios en la composición química superficial. En todos los casos se ha encontrado que la implantación iónica proporciona aumentos de dureza que en algunos de los casos llega hasta el 80%. Se encontraron así mismo mejoras en la resistencia al desgaste y disminuciones del coeficiente de fricción de hasta un 50%. La caracterización AES y XPS pone de manifiesto la aparición de precipitados de nitruros, con mayor concentración para la implantación de altas dosis de nitrógeno atómico sobre titanio.

  20. CONCENTRACIÓN DE MINERALES DE TITANIO CONTENIDOS EN LAS ARENAS DE PLAYAS DE LA REGIÓN DE ATACAMA - CHILE

    Directory of Open Access Journals (Sweden)

    Luis Valderrama Campusano

    2008-07-01

    Full Text Available El presente trabajo tiene como fin caracterizar y concentrar minerales de titanio contenidos en las arenas de playas de la Región de Atacama. El análisis mineralógico indicó que los principales constituyentes son cuarzo, feldespato, ilmenita, titanita, rutilo y trazas de circonita, monacita y wolframita. Los análisis químicos indican que la ley de TiO2 es de 2,3% y 3,15% para las arenas de Huasco y Caldera, respectivamente. Al retirar el material sobre 0,300 mm, se produce una preconcentración, aumentando las leyes de TiO2 a 5,33% para Huasco y 6,48% para Caldera. Las pruebas de concentración gravitacional fueron realizadas en una mesa Wilfley, y fueron estudiados diferentes ángulos de inclinación de la mesa, para la concentración primaria (2,5°; 3,0°; 3,5º y 4,0° y la limpieza (5,0°; 5,5; 6,0° y 6,5° respectivamente. Los mejores resultados fueron obtenidos usando un ángulo de inclinación de 3,0° para la concentración primaria y 6,0° para limpiar el concentrado. Con estos resultados se diseñó un circuito para las arenas de Huasco, lográndose un concentrado final con una ley de 46,0% de TiO2 y una recuperación de 21,2%, y para Caldera, se obtuvo un concentrado final de 51,3% TiO2 con una recuperación de 17,4%.

  1. Propiedades mecánicas de recubrimientos biocompatibles de óxido de titanio producidos en un reactor aerosol-gel

    Directory of Open Access Journals (Sweden)

    Manso, M.

    2001-04-01

    Full Text Available The present work deals with the formation of titania coatings depending on the parameters of an aerosol-gel reactor. It has been found that the mechanical properties of the films can be taylored by selecting the degree of drying and condensation of the precursor solution. To show it, the plastic deformation energy has been calculated from dynamic uniaxial tests over coatings formed at different temperatures. Furthermore, the values of hardness and elastic modulus of the coatings have been obtained from loading-unloading indentation cycles. Clearly different values were obtained for each coating and an increase of the above mentioned magnitudes was observed for the coatings prepared at higher sintering temperatures.

    En el presente trabajo se describe la formación de recubrimientos de óxido de titanio en función de los parámetros de funcionamiento de un reactor aerosol-gel. Se ha encontrado que las propiedades mecánicas de las películas pueden ser predeterminadas en función del grado de secado y condensación de la solución precursora. En concreto, se ha estimado la energía plástica de deformación en ensayos uniaxiales dinámicos de carga y descarga sobre recubrimientos formados a distintas temperaturas. Además se han obtenido los valores de dureza y módulo de elasticidad de dichos recubrimientos mediante indentaciones cíclicas de carga-descarga. Se han obtenido valores claramente diferenciados para cada tipo de recubrimiento observándose un aumento de las citadas magnitudes para las películas preparadas a temperaturas crecientes.

  2. Síntesis y caracterización del nitruro ternario de titanio y vanadio (TixV1-xN

    Directory of Open Access Journals (Sweden)

    Alcalá, M. D.

    2011-02-01

    Full Text Available Titanium-Vanadium nitride (TiVN has been prepared from carbothermal reduction of corresponding oxides and also by direct nitridation of a mix of two metals employing the ATVC method. The characterization of the final product by X-ray diffraction, scanning electron microscopy, electron energy loss (EELS, and X-ray absorption spectroscopy (XAS is presented. The synthesis of the ternary nitride has been possible in all range of composition and the final product is obtained with nanometric particle size and a high microhardness after sintering.En el presente trabajo se aborda la síntesis del nitruro ternario de titanio y vanadio por reducción carbotérmica de una mezcla de óxidos o bien por nitruración directa de la mezcla de metales, en todo el rango de composiciones empleando el método de análisis térmico a velocidad controlada (ATVC. La caracterización de los productos obtenidos se ha llevado a cabo mediante difracción de rayos-X y microscopia electrónica. El empleo de la técnica EELS ha mostrado su capacidad para la cuantificación de este tipo de materiales, así como la utilización de la técnica espectroscópica XAS nos ha servido para corroborar los datos obtenidos a partir de los diagramas de difracción de rayos-X sobre distancias de enlace, número de coordinación y grado de desorden, esto último no detectado por las otras técnicas usadas en la caracterización de los productos. Los valores de microdureza registrados para las muestras sintetizadas se encuentran dentro del rango de valores reportados para este tipo de materiales.

  3. Neptunium (IV) oxalate solubility

    International Nuclear Information System (INIS)

    Luerkens, D.W.

    1983-07-01

    The equilibrium solubility of neptunium (IV) oxalate in nitric/oxalic acid solutions was determined at 22 0 C, 45 0 C, and 60 0 C. The concentrations of nitric/oxalic acid solutions represented a wide range of free oxalate ion concentration. A mathematical solubility model was developed which is based on the formation of the known complexes of neptunium (IV) oxalate. the solubility model uses a simplified concentration parameter which is proportional to the free oxalate ion concentration. The solubility model can be used to estimate the equilibrium solubility of neptunium (IV) oxalate over a wide range of oxalic and nitric acid concentrations at each temperature

  4. NNDSS - Table IV. Tuberculosis

    Data.gov (United States)

    U.S. Department of Health & Human Services — NNDSS - Table IV. Tuberculosis - 2016.This Table includes total number of cases reported in the United States, by region and by states, in accordance with the...

  5. NNDSS - Table IV. Tuberculosis

    Data.gov (United States)

    U.S. Department of Health & Human Services — NNDSS - Table IV. Tuberculosis - 2014.This Table includes total number of cases reported in the United States, by region and by states, in accordance with the...

  6. NNDSS - Table IV. Tuberculosis

    Data.gov (United States)

    U.S. Department of Health & Human Services — NNDSS - Table IV. Tuberculosis - 2015.This Table includes total number of cases reported in the United States, by region and by states, in accordance with the...

  7. SAGE IV Pathfinder

    Data.gov (United States)

    National Aeronautics and Space Administration — Utilizing a unique, new occultation technique involving imaging, the SAGE IV concept will meet or exceed the quality of previous SAGE measurements at a small...

  8. Biotransformación del pelo residual de curtiembres

    Directory of Open Access Journals (Sweden)

    Ruth Viviana Numpaque

    2016-12-01

    Full Text Available La industria de curtiembres genera una alta carga contaminante representada por residuos líquidos, sólidos y gaseosos. Entre los residuos sólidos, el pelo residual es vertido directamente al río Bogotá y/o en rellenos sanitarios, desencadenando serios conflictos de orden ambiental, social y económico. El objetivo de esta investigación fue evaluar la capacidad de los microorganismos del EM y Agroplux en la transformación del pelo residual en compost. Se evaluaron tres tratamientos con pelo residual y materiales orgánicos de plaza en diferentes porcentajes y dos controles, utilizando el diseño completamente al azar, con tres repeticiones. Durante el compostaje se determinaron las variables temperatura, formación de agregados, pH y conductividad eléctrica. El desarrollo de la temperatura ocurrió en ciclos que concordaron con los volteos y re-inoculaciones. En el tercer ciclo el mayor incremento de temperatura fue obtenido en los tres tratamientos, cuando ya se había agotado la mayor parte de los residuos orgánicos. La formación de agregados indicó que el proceso se llevó a efecto principalmente en el tratamiento con 20% de pelo residual más 80% de residuos orgánicos. Además de su color oscuro y la ausencia de olor y fragmentos, el compost producido mediante dicho tratamiento mostró la conductividad eléctrica más baja y un pH casi neutro. Se concluye que los microorganismos del EM y Agroplux tienen capacidad para transformar el pelo residual en compost y por lo tanto representan una alternativa viable para la continuación del funcionamiento de la industria de curtiembres en Villapinzón (Cundinamarca y en otras regiones de Colombia.

  9. Uranium determination by spectrophotometry, in chloride solutions, using titanium (III) as reducer; Determinacao de uranio por espectrofotometria, em solucoes cloridricas, utilizando titanio (III) como redutor

    Energy Technology Data Exchange (ETDEWEB)

    Bastos, E T.R.; Bastos, M B.R.

    1986-08-01

    A simple method for determining uranium in uranium (VI) solutions with the presence of uranium (IV), iron (II), and titanium (IV) in chloridic solution is described. The method comprises in uranium (VI) reduction with titanium (III), acidity adjustment and uranium (IV) spectrophotometry in hydrochloric acid 2 M. (C.G.C.).

  10. Aplicación del shot peening en implantes dentales de titanio para la mejora de la osteointegración

    Directory of Open Access Journals (Sweden)

    Aparicio, C.

    1998-05-01

    Full Text Available In order to optimize the implant-bone fixation, different shot peening treatments with different shot particles (TiO2, Al2O3 y SiC. La rugosidad, SiC have been made. The influence that each type of shot particle has in the bone colonization on the different treatment surfaces has been determined by means of osteoblast-like cells culture. Commercially pure titanium discs have been shot peened. Their qualitative and quantitative surface roughness have been characterized; as well as their surface contamination caused by the shot particles. Particle size has also been determined, before and after the treatment, in order to evaluate their breaking averages. Finally, a TiO2 shot particles manufacture process by sintering has been developed. The manufacture has been necessary since this type of shot particles are not available in the market with the adequate size.

    Con el propósito de optimizar la fijación entre el implante y el hueso, se han realizado tratamientos de shot peening con distintos tipos de partículas de proyección: TiO2, Al2O3 y SiC. La rugosidad superficial obtenida será colonizada por hueso neoformado que producirá un anclaje implante-hueso. Para valorar la influencia que cada tipo de material abrasivo tiene en la colonización del hueso sobre las superficies tratadas, se han realizado ensayos in vitro de cultivos osteoblásticos. El shot peening se ha llevado a cabo en discos de titanio comercialmente puro, sobre los que se ha caracterizado cuantitativa y cualitativamente la rugosidad después del tratamiento; así como la contaminación de la superficie por las partículas. También se ha determinado el tamaño de las partículas, antes y después del tratamiento, para valorar sus porcentajes de rotura. Finalmente, se ha propuesto un proceso de fabricación de partículas de TiO2 por sinterización en el laboratorio

  11. Efecto de la corriente pulsada en el proceso de soldadura GTAW en titanio 6Al4V con y sin metal de aporte

    Directory of Open Access Journals (Sweden)

    Cruz-González, Celso E.

    2016-09-01

    Full Text Available In this work the influence of the current is determined, the pulsed current with 20 and 50 Hz frequency in the mechanical properties, microstructure and wide lace GTAW (Gas Tungsten Arc Welding welding process 6AL4V titanium 1.6 mm thick. Full factorial design experiments with three replicates was perform. In the experimental design factors such as the use of input and frequency they were analyzed. Two metal levels for the contribution factor whose maximum level is the use of input and minimal unused filler were considered. In the case of the frequency, three levels were use as minimum is DC, 20 Hz is a central and 50 Hz as maximum level. Mechanical tensile tests performed 500 g Vickers microhardness and macro and micrographs of the welded joints. It was found that the mechanical properties of the affected joint are significantly (P En este trabajo se determinó la influencia de la corriente continua, la corriente pulsada con 20 y 50 Hz de frecuencia en las propiedades mecánicas, microestructura así como ancho del cordón del proceso de soldadura GTAW en titanio 6Al4V de 1,6 mm de espesor. Se realizó un diseño de experimentos factorial completo con tres réplicas. En el diseño de experimentos fueron analizados los factores, como el uso de aporte y frecuencia. Se consideraron dos niveles para el factor metal de aporte cuyo nivel máximo es el uso de aporte y el mínimo sin uso de aporte. Para el caso de la frecuencia se consideraron tres niveles, siendo el mínimo, corriente continua, 20 Hz como nivel medio y 50 Hz como nivel máximo. Se realizaron ensayos mecánicos de tensión, microdureza Vickers 500 g, así como macro y micrografías de las uniones soldadas. Se encontró que las propiedades mecánicas de la unión son afectadas significativamente (valor P < 0,05 con respecto a la frecuencia, tanto utilizando metal de aporte, o sin el uso de este. El ancho de cara y raíz disminuyó cuando ocurrió un cambio de corriente continua a 20 Hz

  12. Modificación química del precursor de titanio para obtener soles estables de silice – titania: Uso de acetilacetona

    Directory of Open Access Journals (Sweden)

    Rodríguez-Páez, J. E.

    2004-02-01

    Full Text Available Sol-gel processing has become a well established technique for producing ceramic powders or glasses. This processing has been utilized to synthesize several interesting systems, e.g. the SiO2 – TiO2 system. A major concern in the stable multicomponent geles is that the hydrolysis and condensation velocities are diferent for each precursor, TEOS and Ti(OBu4 in this work. The chemical control of these reactions is currently performed by adding complexing reagents that react with metal alkoxides at a molecular level, giving rise to new molecular precursors of different structure, reactivity and functionanality. This paper shows that stable TEOS – Ti(OBu4 – H2O sol can be reproducibly prepared in the presence of acetylacetone. We shall then show that the acac behaves as a ligand, directly bonded to the titanium ion. Thus the formation of precipitate is avoided. Infra-red spectroscopy (FTIR and viscosity measures were used to demostrated this behaviour of the system.

    La técnica Sol-Gel se ha utilizado para sintetizar una serie de sistemas multicomponentes, entre ellos SiO2 – TiO2. El mayor problema en la obtención de geles multicomponentes estables es la desigual velocidad de hidrólisis y condensación que presentan los alcóxidos precursores de los cationes de interés. En este trabajo se muestra cómo adicionando acetilacetona, acacH, al sistema TEOS – Ti(OBu4 – H2O se puede obtener un sol estable. Se tomaron diferentes concentraciones de los precursores de silicio y titanio y una sola concentración de acacH. Se utilizó espectroscopia infrarroja, FTIR, para identificar los grupos funcionales presentes en el sistema y además se midió regularmente la viscosidad para determinar cualitativamente el avance de la policondensación del sistema.

  13. DEFORMACIÓN ELÁSTICA RESIDUAL EN LÁMINAS DE ACERO AISI 304 RECUBIERTAS CON UNA PELÍCULA DE NITRURO DE TITANIO DEPOSITADA POR PVD-MAGNETRON SPUTTERING

    Directory of Open Access Journals (Sweden)

    H. A. COLORADO

    2009-01-01

    Full Text Available Se realizó una caracterización mediante difracción de rayos x (DRX en láminas de acero inoxidable AISI 304 recubierto con una capa de nitruro de titanio de 3 um de espesor, obtenida mediante deposición física de vapor (PVD-MAGNETRON SPUTTERING a una temperatura de 200 °C. se tomaron imágenes de microscopía electrónica de barrido (MEB, microscopía óptica (MO y microscopía de fuerza atómica (MFA para caracterizar el sustrato, la capa y la zona cercana a la intercara. adicionalmente se determinó la deformación elástica residual asociada con el ensanchamiento de los picos de DRX.

  14. IV access in dental practice.

    LENUS (Irish Health Repository)

    Fitzpatrick, J J

    2009-04-01

    Intravenous (IV) access is a valuable skill for dental practitioners in emergency situations and in IV sedation. However, many people feel some apprehension about performing this procedure. This article explains the basic principles behind IV access, and the relevant anatomy and physiology, as well as giving a step-by-step guide to placing an IV cannula.

  15. Internet Economics IV

    Science.gov (United States)

    2004-08-01

    edts.): Internet Economics IV Technical Report No. 2004-04, August 2004 Information Systems Laboratory IIS, Departement of Computer Science University of...level agreements (SLA), Information technology (IT), Internet address, Internet service provider 16. PRICE CODE 17. SECURITY CLASSIFICATION 18... technology and its economic impacts in the Internet world today. The second talk addresses the area of AAA protocol, summarizing authentication

  16. Uranium (IV) carboxylates - I

    Energy Technology Data Exchange (ETDEWEB)

    Satpathy, K C; Patnaik, A K [Sambalpur Univ. (India). Dept. of Chemistry

    1975-11-01

    A few uranium(IV) carboxylates with monochloro and trichloro acetic acid, glycine, malic, citric, adipic, o-toluic, anthranilic and salicylic acids have been prepared by photolytic methods. The I.R. spectra of these compounds are recorded and basing on the spectral data, structure of the compounds have been suggested.

  17. PLATO IV Accountancy Index.

    Science.gov (United States)

    Pondy, Dorothy, Comp.

    The catalog was compiled to assist instructors in planning community college and university curricula using the 48 computer-assisted accountancy lessons available on PLATO IV (Programmed Logic for Automatic Teaching Operation) for first semester accounting courses. It contains information on lesson access, lists of acceptable abbreviations for…

  18. Enhanced Design Alternative IV

    International Nuclear Information System (INIS)

    Kramer, N.E.

    1999-01-01

    This report evaluates Enhanced Design Alternative (EDA) IV as part of the second phase of the License Application Design Selection (LADS) effort. The EDA IV concept was compared to the VA reference design using criteria from the Design Input Request for LADS Phase II EDA Evaluations (CRWMS M and O 1999b) and (CRWMS M and O 1999f). Briefly, the EDA IV concept arranges the waste packages close together in an emplacement configuration known as line load. Continuous pre-closure ventilation keeps the waste packages from exceeding their 350 C cladding and 200 C (4.3.6) drift wall temperature limits. This EDA concept keeps relatively high, uniform emplacement drift temperatures (post-closure) to drive water away from the repository and thus dry out the pillars between emplacement drifts. The waste package is shielded to permit human access to emplacement drifts and includes an integral filler inside the package to reduce the amount of water that can contact the waste form. Closure of the repository is desired 50 years after first waste is emplaced. Both backfill and drip shields will be emplaced at closure to improve post-closure performance. The EDA IV concept includes more defense-in-depth layers than the VA reference design because of its backfill, drip shield, waste package shielding, and integral filler features. These features contribute to the low dose-rate to the public achieved during the first 10,000 years of repository life as shown in Figure 3. Investigation of the EDA IV concept has led to the following general conclusions: (1) The total life cycle cost for EDA IV is about $21.7 billion which equates to a $11.3 billion net present value (both figures rounded up). (2) The incidence of design basis events for EDA IV is similar to the VA reference design. (3) The emplacement of the waste packages in drifts will be similar to the VA reference design. However, heavier equipment may be required because the shielded waste package will be heavier. (4) The heavier

  19. Distúrbios causados pelo frio e pelo calor durante corridas de longa distância

    Directory of Open Access Journals (Sweden)

    1999-06-01

    Full Text Available Muitos corredores amadores e de elite participam todos os anos de corridas de longa distância. Quando estes eventos ocorrem em temperaturas altas ou baixas, aumenta o risco de distúrbios térmicos. Contudo, a hipertermia induzida pelo exercício, a hipotermia, a desidratação e outros problemas relacionados podem ser minimizados através de esclarecimentos e um preparo antes do evento. Este documento fornece recomendações para o diretor médico e outras autoridades da organização das corridas nas seguintes áreas: planejamento, profissionais envolvidos na organização, instalações, suprimentos, equipamento e comunicação; fornecimento de esclarecimentos aos participantes; avaliação do estresse térmico; fornecimento de líquidos; e prevenção de questões legais em potencial. Este posicionamento oficial também descreve as condições predisponentes, as formas de diagnóstico e o tratamento dos quatro distúrbios ambientais mais comuns: exaustão pelo calor, colapso pelo calor, hipotermia e congelamento de extremidades. Os objetivos deste documento são: 1 Educar os organizadores e os participantes de corridas de longa distância a respeito das formas mais comuns de distúrbios térmicos incluindo as condições predisponentes, sinais de alerta, suscetibilidade e a redução de sua incidência; 2 Alertar os organizadores sobre as suas responsabilidades civis em potencial no que concerne à segurança do evento e à prevenção de lesões; 3 Recomendar que os organizadores consultem arquivos locais de meteorologia e planejem eventos em horas que provavelmente causem menos estresse térmico de modo a minimizar os efeitos deletérios sobre os participantes; 4 Estimular os organizadores a alertar os participantes sobre o estresse térmico no dia da corrida e as suas implicações no que tange aos distúrbios causados pelo frio e pelo calor; 5 Informar os organizadores sobre as ações preventivas que podem reduzir a incidência dos

  20. A sputnik IV saga

    Science.gov (United States)

    Lundquist, Charles A.

    2009-12-01

    The Sputnik IV launch occurred on May 15, 1960. On May 19, an attempt to deorbit a 'space cabin' failed and the cabin went into a higher orbit. The orbit of the cabin was monitored and Moonwatch volunteer satellite tracking teams were alerted to watch for the vehicle demise. On September 5, 1962, several team members from Milwaukee, Wisconsin made observations starting at 4:49 a.m. of a fireball following the predicted orbit of Sputnik IV. Requests went out to report any objects found under the fireball path. An early morning police patrol in Manitowoc had noticed a metal object on a street and had moved it to the curb. Later the officers recovered the object and had it dropped off at the Milwaukee Journal. The Moonwarch team got the object and reported the situation to Moonwatch Headquarters at the Smithsonian Astrophysical Observatory. A team member flew to Cambridge with the object. It was a solid, 9.49 kg piece of steel with a slag-like layer attached to it. Subsequent analyses showed that it contained radioactive nuclei produced by cosmic ray exposure in space. The scientists at the Observatory quickly recognized that measurements of its induced radioactivity could serve as a calibration for similar measurements of recently fallen nickel-iron meteorites. Concurrently, the Observatory directorate informed government agencies that a fragment from Sputnik IV had been recovered. Coincidently, a debate in the UN Committee on Peaceful Uses of Outer Space involved the issue of liability for damage caused by falling satellite fragments. On September 12, the Observatory delivered the bulk of the fragment to the US Delegation to the UN. Two days later, the fragment was used by US Ambassador Francis Plimpton as an exhibit that the time had come to agree on liability for damage from satellite debris. He offered the Sputnik IV fragment to USSR Ambassador P.D. Morozov, who refused the offer. On October 23, Drs. Alla Massevitch and E.K. Federov of the USSR visited the

  1. Respostas cardiovasculares agudas em ambiente virtualmente simulado pelo Nintendo Wii

    Directory of Open Access Journals (Sweden)

    Renato Aparecido de Souza

    2013-01-01

    Full Text Available DOI: http://dx.doi.org/10.5007/1980-0037.2013v15n1p60 Recentemente, tem sido verificada a utilização do Nintendo Wii no contexto da saúde. O objetivo do presente estudo foi analisar as respostas cardiovasculares agudas monitoradas por meio do comportamento da frequência cardíaca, pressão arterial sistólica, pressão arterial diastólica e duplo produto, em ambiente virtualmente simulado pelo console Nintendo Wii. A amostra foi composta por 18 universitários saudáveis, com média de idade de 22,07 ± 1,34 anos. As variáveis foram observadas com uso de deltas (valor final - inicial após 25 arremessos de basquetebol em duas situações experimentais: (I com o voluntário sentado e, (II com o voluntário saltando verticalmente. Os resultados sugerem que a prática de atividade física em ambiente virtual emulado pelo Nintendo Wii é capaz de alterar as respostas cardiovasculares agudas, especialmente, quando realizada em associação a saltos verticais. Assim, os resultados sustentam a viabilidade do uso do Nintendo Wii em programas de treinamento e favorecem sua indicação de forma mais segura.

  2. SHOPPING CENTERS: UMA RELAÇÃO ENTRE OS ATRIBUTOS DE ESCOLHA PELOS CONSUMIDORES VERSUS OS ATRIBUTOS VALORIZADOS PELOS GERENTES

    Directory of Open Access Journals (Sweden)

    Vitor Edson Marques Junior

    2010-04-01

    Full Text Available Embora os shoppings centers estejam em franco processo de ampliação na economia brasileira ainda são poucas as análises envolvendo shoppings centers e atributos motivadores de escolha pelos consumidores. Este trabalho tem por objetivo analisar os fatores motivacionais determinantes para a escolha de um shopping por parte dos consumidores. A amostra deste estudo foi composta por alunos de graduação de cursos de Administração. Adicionalmente, foi realizada uma entrevista em profundidade com os gestores dos três shoppings centers da cidade de Ribeirão Preto. O estudo revelou que os atributos motivadores mais valorizados no processo de escolha foram: limpeza, manutenção, segurança dentro do shopping e qualidade do serviço prestado. Este trabalho pretende contribuir com a compreensão da importância dos fatores valorados pelos consumidores de shoppings centers e assim sendo, fornecer material para a melhoria da gestão destes empreendimentos.

  3. Hepatic imaging in stage IV-S neuroblastoma

    International Nuclear Information System (INIS)

    Franken, E.A. Jr.; Smith, W.L.; Iowa Univ., Iowa City; Cohen, M.D.; Kisker, C.T.; Platz, C.E.

    1986-01-01

    Stage IV-S neuroblastoma describes a group of infants with tumor spread limited to liver, skin, or bone marrow. Such patients, who constitute about 25% of affected infants with neuroblastoma, may expect spontaneous tumor remission. We report 18 infants with Stage IV-S neuroblastoma, 83% of whom had liver involvement. Imaging investigations included Technetium 99m sulfur colloid scan, ultrasound, and CT. Two patterns of liver metastasis were noted: ill-defined nodules or diffuse tumor throughout the liver. Distinction of normal and abnormal liver with diffuse type metastasis could be quite difficult, particularly with liver scans. We conclude that patients with Stage IV-S neuroblastoma have ultrasound or CT examination as an initial workup, with nuclear medicine scans reserved for followup studies. (orig.)

  4. Infestaçao humana pelo Dipylidium caninum

    Directory of Open Access Journals (Sweden)

    Carlos Henrique Lemos

    1985-12-01

    Full Text Available Os autores descrevem um caso de infestação pelo Dipylidium caninum numa criança residente em Araguari, Minas Gerais, que apresentou lesões cutâneas, insônia, irritabilidade, vômitos eperda do apetite. Relatam a eliminação abundante deproglotes quando a paciente foi tratada com medicamentos caseiros e a remissão dos sintomas, após dois tratamentos com mebendazol. Contudo não puderam concluir sobre a eficiência das drogas, devido à medicação empírica e ã administração de 200 mg/dia de mebendazol, contrariando a dosagem recomendada para Cestodas, que é de 400 mg/dia. Relatam, ainda, que exames das fezes do cão de propriedade da família revelaram apenas a presença de ancilostomídeos.

  5. Infestaçao humana pelo Dipylidium caninum

    OpenAIRE

    Carlos Henrique Lemos; Clarice de Resende Oliveira

    1985-01-01

    Os autores descrevem um caso de infestação pelo Dipylidium caninum numa criança residente em Araguari, Minas Gerais, que apresentou lesões cutâneas, insônia, irritabilidade, vômitos eperda do apetite. Relatam a eliminação abundante deproglotes quando a paciente foi tratada com medicamentos caseiros e a remissão dos sintomas, após dois tratamentos com mebendazol. Contudo não puderam concluir sobre a eficiência das drogas, devido à medicação empírica e ã administração de 200 mg/dia de mebendazo...

  6. RESPONSABILIDADE PELO FATO DO PRODUTO E DO SERVIÇO

    Directory of Open Access Journals (Sweden)

    Michele Romero da Costa*

    2007-12-01

    Full Text Available Este trabalho tem ênfase em apresentar a espécie de responsabilidade adotada pelo Código Brasileiro de Defesa do Consumidor para os fornecedores de produtos e serviços,  qual seja a responsabilidade objetiva, demonstrando uma inovação trazida por este diploma para responsabilidade civil do Direito pátrio. Bem como a sua fundamentação e noções gerais a fim de que se identifiquem as relações em que deve ser o código aplicado, entendidas essas como relações de consumo.

  7. Diaquatetrabromidotin(IV trihydrate

    Directory of Open Access Journals (Sweden)

    Fei Ye

    2012-09-01

    Full Text Available The title compound, [SnBr4(H2O2]·3H2O, forms large colourless crystals in originally sealed samples of tin tetrabromide. It constitutes the first structurally characterized hydrate of SnBr4 and is isostructural with the corresponding hydrate of SnCl4. It is composed of SnIV atoms octahedrally coordinated by four Br atoms and two cis-related water molecules. The octahedra exhibit site symmetry 2. They are arranged into columns along [001] via medium–strong O—H...O hydrogen bonds involving the two lattice water molecules (one situated on a twofold rotation axis while the chains are interconnected via longer O—H...Br hydrogen bonds, forming a three-dimensional network.

  8. Cyclopentadienyluranium(IV) acetylacetonates

    International Nuclear Information System (INIS)

    Bagnall, K.W.; Edwards, J.; Rickard, C.E.F.; Tempest, A.C.

    1979-01-01

    Cyclopentadienyluranium(IV) acetylacetonate complexes, (eta 5 C 5 H 5 )UClsub(3-x)(acac)sub(x), where x = 1 or 2, and the corresponding bis triphenylphosphine oxide (tppo) complexes have been prepared. The bis cyclopentadienyl complexes, (eta 5 C 5 H 5 ) 2 U(acac) 2 and (eta 5 C 5 H 5 ) 2 UCl(acac)(tppo) 2 have also been prepared and are stable with respect to disproportionation, whereas (eta 5 C 5 H 5 ) 2 UCl(acac) is not. The IR and UV/visible spectra of the complexes are reported, together with some additional information on the UCl 2 (acac) 2 thf and -tppo systems. (author)

  9. Tratamento da criptococose do sistema nervoso pelo Amphotericin B

    Directory of Open Access Journals (Sweden)

    Dante Giorgi

    1959-12-01

    Full Text Available Os autores descrevem a evolução dos conhecimentos sôbre a meningoen-cefalite produzida pelo Criptococcus neoformans, analisando as dificuldades anteriormente havidas para o diagnóstico em vida, as quais foram superadas depois que se usou rotineiramente a pesquisa do cogumelo no LCR pelo método de coloração de tinta da China e pela cultura. Assinalam, a seguir, o aparecimento do Amphotericin B, novo antibiótico fungicida que veio modificar o prognóstico desta afecção. Apresentam sua experiência com 14 casos de meningite por criptococos diagnosticados em vida e referem pormenorizadamente 2 casos tratados com o Amphotericin B. O primeiro, de paciente portadora desta afecção, evoluindo de maneira crônica, com períodos de exacerbação que melhoram nitidamente com o Amphotericin B e que está com uma sobrevida de 20 meses. O segundo, de paciente portadora de forma aguda desta afecção que teve cura clínica e está com LCR absolutamente normal, com seguimento de 11 meses. Em ambos os casos foi usada a via endovenosa, sendo feitas séries de 10 injeções, cada uma de 50 mg de Amphotericin B em 500 ml de sôro glicosado a 5%. No primeiro caso foram feitas 4 séries e no segundo apenas duas. Não foram registradas reações colaterais de importância. Os autores terminam considerando o Amphotericin B como um elemento que veio tornar muito mais favorável o prognóstico desta afecção até então mortal.

  10. Congenital bilateral neuroblastoma (stage IV-S): case report

    International Nuclear Information System (INIS)

    Lee, Jeong Hee; Lee, Hee Jung; Woo, Seong Ku; Lee, Sang Rak; Kim, Heung Sik

    2002-01-01

    Congenital neonatal neuroblastoma is not uncommon but bilateral adrenal neuroblastoma is rare, accounting for about ten percent of neuroblastomas in children. We report the US the MR findings of a stage IV-S congenital bilateral neuroblastoma occurring in a one-day-old neonate

  11. Influencia de la distribución de las fibras en la conductividad térnnica de materiales compuestos con matrices de aleaciones de titanio y de magnesio

    Directory of Open Access Journals (Sweden)

    Alcaraz, D.

    2005-12-01

    Full Text Available Metal matrix composites are materials with an increasing use in industrial applications. Generally, the estimation of their thermal conductivity does not take into account the type of reinforcements distribution within the matrix. By applying the Network Simulation Method, a 2-D network model is designed and simulated to determinate precise numerical values of thermal conductivity of composites with random distributions. The proposed model is applied to titanium and magnesium matrix composites reinforced with different types of continuous fibers.

    Los "composites" de matriz metálica son materiales de uso creciente en distintas aplicaciones industriales. En general, la determinación de su conductividad térmica no considera el tipo de distribución de los refuerzos en el seno de las matrices. Aplicando el Método de Redes, se diseña un modelo (2D cuya simulación numérica permite obtener valores precisos de conductividad en "composites" con distribuciones aleatorias. El modelo se aplica a "composites" con matrices de aleaciones de titanio y magnesio reforzados con diferentes tipos de fibras continuas.

  12. Glycogen Storage Disease Type IV

    DEFF Research Database (Denmark)

    Bendroth-Asmussen, Lisa; Aksglaede, Lise; Gernow, Anne B

    2016-01-01

    molecular genetic analyses confirmed glycogen storage disease Type IV with the finding of compound heterozygosity for 2 mutations (c.691+2T>C and c.1570C>T, p.R524X) in the GBE1 gene. We conclude that glycogen storage disease Type IV can cause early miscarriage and that diagnosis can initially be made...

  13. Dismorfia muscular: A busca pelo corpo hiper musculoso

    Directory of Open Access Journals (Sweden)

    Andréa Pires Azevedo

    2012-03-01

    Full Text Available A dismorfia muscular tem sido identificada tanto em homens quanto em mulheres, provocando alterações da perceção da autoimagem e prejuízos socioculturais, e na saúde e bem-estar dos indivíduos. Nesse sentido, o objetivo deste estudo é analisar os aspetos socioculturais, psicológicos e o uso de recursos ergogênicos relacionados à dismorfia muscular, bem como, identificar os riscos promovidos pelo transtorno. Participaram 20 indivíduos, inscritos na rede mundial de computadores. Utilizou-se um questionário para coleta de dados e a análise documental para interpretação das respostas. Os resultados demonstram que as preocupações com a imagem corporal geram insegurança social, baixa autoestima e sentimentos de inferioridade, que seriam resolvidos se a pessoa tivesse corpos belos e fortes. A dismorfia muscular pode aumentar o risco de uso dos esteroides anabolizantes e o uso indiscriminado de suplementos alimentares. Conclui-se que a dismorfia muscular causa sofrimentos e prejuízos psicológicos, socioculturais e, desse modo, compromete a saúde das pessoas.

  14. O conhecimento pré-colombiano do Brasil pelos portugueses

    Directory of Open Access Journals (Sweden)

    Thomaz Oscar Marcondes de Souza

    1961-09-01

    Full Text Available A brilhante emprêsa marítima realizada pelo infante D. Henrique ao longo da costa ocidental da África; a passagem do cabo da Boa Esperança em 1488 por Bartolomeu Dias; o desco-brimento do caminho marítimo para a índia por Vasco da Ga-ma em 1498; as guerras e conquistas na Ásia com a figura ím-par de Afonso de Albuquerque; o ter Portugal mantido por mais de três séculos a integridade territorial do Brasil, vencendo fran-ceses, holandeses e espanhóis, não satisfazem a vaidade nacio-nal de certos historiadores portuguêses . Querem mais . Que-rem que tudo que possa constituir prioridade, em se tratando de descobrimento marítimos, pertença a Portugal. Navegado-res do quilate de Colombo, Caboto, Vespucci, Pinzon, Verraz-zano, Cartier e outros, não passam de medíocres, de embustei-ros e de falsos descobridores que se apropriaram de glórias alheias, sendo que o Genovês, o pouco que sabia de navegação, aprendeu em Portugal.

  15. About the structure and stability of complex carbonates of thorium (IV), cerium (IV), zirconium (IV), hafnium (IV)

    International Nuclear Information System (INIS)

    Dervin, Jacqueline

    1972-01-01

    This research thesis addressed the study of complex carbonates of cations of metals belonging to the IV A column, i.e. thorium (IV), zirconium (IV), hafnium (IV), and also cerium (IV) and uranium (VI), and more particularly focused on ionic compounds formed in solution, and also on the influence of concentration and nature of cations on stability and nature of the formed solid. The author first presents methods used in this study, discusses their precision and scope of validity. She reports the study of the formation of different complex ions which have been highlighted in solution, and the determination of their formation constants. She reports the preparation and study of the stability domain of solid complexes. The next part reports the use of thermogravimetric analysis, IR spectrometry, and crystallography for the structural study of these compounds

  16. Infestaçao humana pelo Dipylidium caninum

    Directory of Open Access Journals (Sweden)

    Carlos Henrique Lemos

    1985-12-01

    Full Text Available Os autores descrevem um caso de infestação pelo Dipylidium caninum numa criança residente em Araguari, Minas Gerais, que apresentou lesões cutâneas, insônia, irritabilidade, vômitos eperda do apetite. Relatam a eliminação abundante deproglotes quando a paciente foi tratada com medicamentos caseiros e a remissão dos sintomas, após dois tratamentos com mebendazol. Contudo não puderam concluir sobre a eficiência das drogas, devido à medicação empírica e ã administração de 200 mg/dia de mebendazol, contrariando a dosagem recomendada para Cestodas, que é de 400 mg/dia. Relatam, ainda, que exames das fezes do cão de propriedade da família revelaram apenas a presença de ancilostomídeos.The authors describe a case of Dipylidium caninum infestation in a child living in Araguari, state of Minas Gerais, Brazil, who has presented skin lesions, insomnia, irritability, vomitingand lossof appetite. When the patient was treated with folk medicine they noticed excessive elimination of proglotids and the elimination of symptoms after being treated twice with mebendazol. However it was not possible to conclude anything about the drugs, due to the empiric medication and the administration of mebendazol in a dose of200 mg daily, which is not the quantity recommended for Cestodes (400 mg daily. The fecal examination of the dog that belongs to the family showed only ancylostomides.

  17. Direct Bandgap Group IV Materials

    Science.gov (United States)

    2016-01-21

    AFRL-AFOSR-JP-TR-2017-0049 Direct Bandgap group IV Materials Hung Hsiang Cheng NATIONAL TAIWAN UNIVERSITY Final Report 01/21/2016 DISTRIBUTION A...NAME(S) AND ADDRESS(ES) NATIONAL TAIWAN UNIVERSITY 1 ROOSEVELT RD. SEC. 4 TAIPEI CITY, 10617 TW 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING...14. ABSTRACT Direct bandgap group IV materials have been long sought for in both academia and industry for the implementation of photonic devices

  18. RENOVANDO A TRADIÇÃO PELOS CAMINHOS DA INTERTEXTUALIDADE

    Directory of Open Access Journals (Sweden)

    Alba Olmi

    2007-08-01

    Full Text Available A revisão e a subversão dos contos de fadas e de outros textos canônicos realizadas por Angela Carter, Stevie Smith, Liz Lochhead e Anne Sexton, entre outras, se constituem na desconstrução/reconstrução da narrativa masculina através da qual é conferida uma nova forma literária, mas também uma nova voz à figura da mulher. Através da transposição diegética e da paródia, vão se modificando diversos elementos presentes na narrativa dos contos de fada tradicionais e de outros textos “canônicos”, o que produz uma transvalorização, isto é, uma transformação de natureza axiológica de seu primitivo horizonte cultural e de sentido. Essa revisão envolve também o nível lingüístico e as estruturas superficiais, porém sem nunca perder de vista a relação intertextual com os textos originais, questionando preconceitos e discriminação da figura feminina. Isso vem demonstrar que as mulheres estão criando uma literatura própria na qual histórias de mulheres são narradas do ponto de vista feminino.Transcendendo o sistema dicotômico-binário de gênero, que produziu relações seculares e históricas de poder, a escritura feminina reconstrói o conceito de diferença e de sujeito, provocando a ruptura do discurso hegemônico masculino, conferindo novo significado ao conceito de cultura. Observa-se, ainda, que o objetivo maior dessas re-escrituras não é simplesmente demolir uma tradição que perpetuou mitos e ideais patriarcais, mas evidenciar seus limites, suas lacunas e seus desvios, a fim de permitir que a tradição se renove, satisfazendo assim a dupla exigência de revisão e de continuidade em relação ao passado, pelos amplos caminhos da intertextualidade.

  19. Evaluación del desempeño de aisladores de porcelana recubiertos con películas de dióxido de titanio para disminuir el ensuciamiento

    Directory of Open Access Journals (Sweden)

    Lorena E. Correa

    2013-01-01

    Full Text Available El ensuciamiento de aisladores eléctricos en servicio expuestos a la atmósfera constituyen un gran inconveniente para el sector eléctrico, debido a que en la superficie se deposita material de naturaleza orgánica e inorgánica, formando una capa que en presencia de humedad puede volverse conductora, produciendo diferentes fenómenos que podrían deteriorar las propiedades aislantes del elemento y finalmente conducir a la ruptura del mismo, afectando principalmente el suministro de la energía eléctrica. Actualmente se encuentra en fase de desarrollo un método que consiste en la aplicación de una película de dióxido de titanio para minimizar la acumulación de suciedad en los aisladores de porcelana sin afectar las propiedades eléctricas de los mismos. Se evaluó el desempeño de dos espesores diferentes (una y dos capas de dicha película en aisladores de porcelana, para lo cual se realizaron pruebas de adherencia, ángulo de contacto, corriente de fuga, tensión de ̄ameo en seco y ensayos de erosión en laboratorio. Finalmente, se evaluó el desempeño en aisladores en servicio en una torre de transmisión de energía. Los aisladores recubiertos exhiben un buen desempeño en las pruebas de laboratorio. Además, tras 5 meses de exposición en servicio en la línea de alta tensión energizada, se observa una disminución en el ensuciamiento.

  20. Modelización de la formación isotérmica de ferrita idiomórfica en aceros de medio carbono microaleados con vanadio-titanio

    Directory of Open Access Journals (Sweden)

    Capdevila, C.

    2002-06-01

    Full Text Available A theoretical model is presented in this work to calculate the evolution of isothermal austenite-to-idiomorphic ferrite transformation in a medium carbon vanadium-titanium microalloyed steel. This model has been developed on the basis of the study of the nucleation and growth kinetics of idiomorphic ferrite, considering the influence of the nature, size and distribution of the inclusions, which are responsible of the intragranular nucleation of idiomorphic ferrite. Moreover, the influence of the austenite grain size on the isothermal decomposition of austenite in idiomorphic ferrite has been thoroughly analysed. An excellent agreement (85 % in R has been obtained between experimental and predicted values of volume fraction of idiomorphic ferrite.

    En este trabajo se presenta un modelo teórico para calcular la evolución con el tiempo de la transformación isotérmica de la austenita en ferrita idiomórfica en un acero de medio carbono microaleado con vanadio-titanio. En dicho modelo, desarrollado en base al estudio de la cinética de nucleación y crecimiento de ferrita idiomórfica, se ha valorado la influencia de la naturaleza, tamaño y distribución de las inclusiones responsables de la nucleación intragranular de ferrita. Así mismo, se ha analizado, con detenimiento, la influencia que tiene el tamaño de grano austenítico. El modelo ha sido validado experimentalmente, mostrándose un excelente acuerdo (85 % en R entre los resultados experimentales y los predichos por el modelo de transformación propuesto en este trabajo.

  1. Evaluación mecánica mediante técnicas de indentación de soldaduras por fricción lineal en aleaciones de titanio

    Directory of Open Access Journals (Sweden)

    Corzo, M.

    2005-12-01

    Full Text Available This article shows the results of a project that focuses on the characterization of the weld interface region of dissimilar joints between titanium alloys for aeronautical applications, specifically Ti-6Al-2Sn-4Zr-Mo with Ti-6Al4V, and Ti-6Al-2Sn4Zr-6Mo with Ti-6Al- 2Sn-4Zr-2Mo. The uniaxial flow stress and hardening response of the material containing the weld were analyzed following the finite elements simulations and mathematical formulations to correlate hardness and the amount of pile-up and sinking-in phenomena around sharp indenters with uniaxial mechanical properties. This allows to accurately stablishing the influence that welding process has on the mechanical response of the parts. Tests performed on these friction-welded specimens showed that the fine grained microstructures in the welds exhibited better properties than the base materials.

    Este artículo presenta los resultados de un proyecto cuyo objetivo es evaluar la integridad estructural de soldaduras por fricción lineal entre diferentes aleaciones de titanio de aplicación aeronáutica. Concretamente se han estudiado dos uniones: Ti-6Al-2Sn-4Zr- 6Mo con Ti-6Al-W, y Ti-6Al-2Sn-4Zr-6Mo con Ti-6Al-2Sn4Zr-2Mo. El límite elástico y el coeficiente de endurecimiento por deformación de las uniones soldadas y del metal base son inferidos mediante una novedosa metodología de indentación. En los metales base, los resultados experimentales de indentación son confrontados con los obtenidos mediante ensayos convencionales de tracción. Las variaciones en propiedades mecánicas sugieren que la fina microestructura en la zona afectada térmicamente mejora las propiedades con respecto al metal base

  2. Generación de inclusiones no metálicas y su efecto sobre el bloqueo de boquillas de colada continua en aceros ultra bajo carbono estabilizados con titanio

    Directory of Open Access Journals (Sweden)

    Vega-Becerra, O.

    2005-12-01

    Full Text Available This work presents a thermodynamic and experimental analysis of the phases that precipitate in the non metallic inclusions depending on the contents of aluminium (Al, titanium (Ti and oxygen (O in the steel, and their influence on the nozzle clogging. For the thermodynamic analysis, the program FACT WIN (Facility For The Analysis of Chemical Thermodynamics subroutine Equilib. was used. The experimental tests were carried out in an TAMMANN furnace, in an argon atmosphere. The control of the content of dissolved oxygen was carried out by means of sensors of solid electrolyte bases zirconia. The characterization of the inclusions was carried out with SEM, EDS and by means of the technique of fractional reduction with carbon. A good agreement was observed between the thermodynamic predictions and the experimental results.

    En este trabajo se presenta un análisis termodinámico y experimental de las fases que precipitan en inclusiones no metálicas en función de los contenidos de aluminio (Al, titanio (Ti y oxígeno (O en el acero y su influencia sobre el bloqueo de boquillas de colada continua. Para el análisis termodinámico se utilizó el programa FACT-WIN (Facility For The Analysis of Chemical Thermodynamics subrutina Equilib. Las pruebas experimentales se realizaron en un horno TAMMANN, en atmósfera de argón. El control del contenido de oxígeno disuelto se llevó a cabo mediante sensores de electrólito sólido base zirconia. La caracterización de las inclusiones se realizó por SEM, EDS y mediante la técnica de reducción fraccionada con carbono. Se observó una buena concordancia entre las predicciones termodinámicas y los resultados experimentales.

  3. Contribuições para interação pelo olhar com teclados virtuais

    OpenAIRE

    Antonio Díaz Tula

    2015-01-01

    A presente tese de doutorado insere-se na área de interação pelo olhar. A interação pelo olhar é uma forma de comunicação com o computador utilizando os movimentos oculares do usuário. Pessoas com deficiência física, que não conseguem usar dispositivos convencionais como um teclado e um mouse de computador, podem se beneficiar da interação pelo olhar para se comunicarem e se inserirem na sociedade. Para isso a entrada de texto ou digitação pelo olhar é um recurso importante e assunto principa...

  4. Free-format RPG IV

    CERN Document Server

    Martin, Jim

    2013-01-01

    This how-to guide offers a concise and thorough introduction to the increased productivity, better readability, and easier program maintenance that comes with the free-format style of programming in RPG IV. Although free-format information is available in IBM manuals, it is not separated from everything else, thereby requiring hours of tedious research to track down the information needed. This book provides everything one needs to know to write RPG IV in the free-format style, and author Jim Martin not only teaches rules and syntax but also explains how this new style of coding has the pot

  5. 11. IV avati Draakoni galeriis...

    Index Scriptorium Estoniae

    2005-01-01

    Tanel Saare (sünd. 1979) näitus "Gott und huhn episode IV: seed shower". Eksponeeritakse väljavõtteid aktsioonidest aastatel 2000-2004 Turus, Nürnbergis, Berliinis, Lohusalus ja Soulis. Osa aktsioone toimus koos rühmitusega Non Grata

  6. Analysis of X-ray diffraction of the titanium dioxide (TiO{sub 2}) synthesized by the Pechini Method for application in heterogeneous photocatalysis processes; Analise de difracao de raios X do dioxido de titanio (TiO{sub 2}) sintetizado pelo metodo Pechini para aplicacao em processos de fotocatalise heterogenea

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, P.L.; Araujo, D.S.; Costa, A.C.F.M.; Oliveira, L.S.C., E-mail: palomalima_eq@yahoo.com [Universidade Federal de Campina Grande (UFCG), PB (Brazil)

    2016-07-01

    Titanium dioxide (TiO{sub 2}) is a polymorph commonly applied to heterogeneous photocatalysis processes for being relatively inexpensive and photo - stable. It is usually found in three different crystalline phases (anatase, rutile and brookite), which directly interfere in their photocatalytic efficiency. Therefore, this study aimed to investigate the obtainment of TiO{sub 2} by Pechini method in different conditions for application in the heterogeneous photocatalysis process. For this purpose, it was evaluated by analysis of X-ray diffraction (XRD ) the behavior of TiO{sub 2} materials synthesized in proportions of 2:1 and 3:1 (titanium isopropoxide/citric acid), pyrolyzed at 300°C/3h and 400°C /h and calcined at 400°C and 500°C/1h. The results revealed that the TiO{sub 2} samples produced in the ratio of 2:1 and 3:1 isopropoxide/citric acid and calcined at 500°C/h presented the best results. (author)

  7. Uruguay; 2011 Article IV Consultation

    OpenAIRE

    International Monetary Fund

    2011-01-01

    This 2011 Article IV Consultation highlights that the growth momentum in Uruguay has continued into 2011 but a slowdown is under way, led by weaker exports and slower public investment. Uruguay’s economic and financial vulnerabilities are modest, and the government has reduced debt vulnerabilities significantly and built important financial buffers. Executive Directors have commended authorities’ skillful macroeconomic management that has underpinned Uruguay’s excellent economic performance, ...

  8. Austria; 2013 Article IV Consultation

    OpenAIRE

    International Monetary Fund

    2013-01-01

    This paper presents details of Austria’s 2013 Article IV Consultation. Austria has been growing economically but is facing challenges in the financial sector. Full implementation of medium-term fiscal adjustment plans require specifying several measures and plans that need gradual strengthening to take expected further bank restructuring cost into account. It suggests that strong early bank intervention and resolution tools, a better designed deposit insurance system, and a bank-financed reso...

  9. Efectividad del cepillo iónico basado en dióxido de titanio en comparación con el cepillo vitis junior en la eliminación de placa bacteriana en niños de 8 a 10 años del Colegio Weberbauer Schule

    OpenAIRE

    Conte Pujalt, Giacomo; Olivares Espinoza, Jimmy

    2011-01-01

    Objetivo. Determinar la efectividad del cepillo iónico basado en dióxido de titanio comparándolo con el cepillo Vitis Junior en la remoción de placa bacteriana en niños de 8 a 10 años del colegio Weberbauer Schule. Material y método. El estudio se realizó en un grupo de 30 niños, los cuales se comportaron como grupo control y experimental, ya que se trabajó con ellos en dos oportunidades diferentes. En la primera se realizó el cepillado con el cepillo Vitis Junior mediante la técnica...

  10. Resultados de los primeros casos de craneoplastia con tela de titanio y colgajo galeal bipediculado postraumatismo craneano Resultados dos primeiros casos da cranioplastia com tela de titânio e retalho galeal bipediculado pós-trauma crânio-encefálico Results of first cases of craneoplasty with titanium mesh and galeal bipediculated flap after craneal trauma

    Directory of Open Access Journals (Sweden)

    L. Dos Santos Fonseca

    2010-03-01

    Full Text Available La causa más frecuente de una solución de continuidad de los huesos de la calota craneana es un traumatismo craneoencefálico grave. La reparación de la misma es lo que conocemos como craneoplastia. El objetivo de nuestro artículo es presentar nuestros primeros resultados de craneoplastia con tela de titanio y colgajo galeal bipediculado. A través de un estudio retrospectivo, descriptivo, tipo serie de casos, relatamos los resultados de nuestra experiencia en craneoplastia con tela de titanio y colgajo sobre 10 pacientes operados entre Enero y Octubre de 2007, tras valoración con Tomografía Computerizada, de los cuales el 90% fueron de sexo masculino y con una edad media de 29,9 años. El tiempo medio de internamiento hospitalario fue de 10,3 días. Tuvimos un caso de complicación y una reintervención por desplazamiento de la tela de titanio a los 4 meses. Todos los pacientes quedaron satisfechos con los resultados. Como conclusión, la craneoplastia con tela de titanio asociada a colgajo galeal bipediculado es un procedimiento eficaz y viable dentro de la red pública hospitalaria.A falta de continuidade entre ossos da calota craniana é mais frequentemente causada por trauma crânio-encefálico grave. A reparação dessas deformidades é conhecida como cranioplastia. Objetivo: Avaliar os resultados dos primeiros casos da cranioplastia com tela de titânio e retalho galeal bipediculado. Por meio de estudo retrospectivo, descritivo, tipo série de casos, relatam-se os resultados de cranioplastia com tela de titânio e retalho a que 10 pacientes foram submetidos, entre Janeiro a Outubro de 2007, após avaliação por tomografia computadorizada, sendo 90% do sexo masculino, com média de idade de 29,9 anos. O tempo médio de internamento foi de 10,3 dias. Houve uma complicação e uma reoperação por deslocamento da tela após quatro meses. Todos os pacientes ficaram satisfeitos com os resultados. Conclusão: A cranioplastia com tela de

  11. Arremessar por cima do ombro e a distância percorrida pelo implemento

    OpenAIRE

    Silva,Samuel Bento da; Vilela Junior,Guanis de Barros; Toloka,Rute Estanislava

    2009-01-01

    A habilidade de arremessar por cima do ombro tem sido bastante estudada, observando-se a velocidade do implemento, porém enquanto muitas tarefas têm como objetivo arremessar o mais longe possível, a distância percorrida pelo objeto ainda não tem sido investigada. O objetivo deste estudo foi verificar se existe relação entre o estágio de desenvolvimento motor nesta habilidade e a distância percorrida pelo implemento e observar diferenças entre os gêneros masculino e feminino; 50 crianças, com ...

  12. Tratamento da escoliose em crianças com paralisia cerebral utilizando a prótese vertical expansível de titânio para costela (VEPTR Tratamiento de la escoliosis en niños con parálisis cerebral mediante la prótesis vertical expansible de titanio para las costillas (VEPTR Treatment of scoliosis in children with cerebral palsy using the vertical expandable prosthetic titanium rib (VEPTR

    Directory of Open Access Journals (Sweden)

    Kiyomori de Quental Tyba

    2011-01-01

    Full Text Available OBJETIVO: Avaliar o uso da prótese vertical expansível de titânio (VEPTR como opção de tratamento inicial da escoliose em crianças de baixa idade portadoras de paralisia cerebral. MÉTODOS: Foram avaliados 10 pacientes portadores de paralisia cerebral (PC tratados com VEPTR pelo grupo de escoliose da AACD de São Paulo. Caracterizavam-se por imaturidade esquelética e escoliose progressiva; sem deformidade grave no plano sagital. Realizamos avaliação da curva pelo método de Cobb no pré e pós-operatório e após dois anos de seguimento. RESULTADOS: A correção obtida com o uso do VEPTR no pós-operatório imediato foi em média de 41,4% nas radiografias iniciais sem tração (p = 0,005 e 9,1% (p = 0,055 nas radiografias com tração. Após quatro meses de pós-operatório mantiveram-se ganhos de 27,2% com relação ao início. Houve correção da obliquidade pélvica de 10,2º no pré-operatório para 5,4º em média (p = 0,007. As complicações ocorreram em seis pacientes (60% e em apenas um paciente foi necessária a retirada do VEPTR. CONCLUSÃO: O VEPTR é um método que obteve correção significativa no tratamento provisório das escolioses na PC, apesar de frequentes complicações de baixa morbidade.OBJETIVO: Evaluar el uso de la prótesis vertical expansible de titanio (VEPTR como opción de tratamiento inicial para la escoliosis en niños pequeños con parálisis cerebral. MÉTODOS: 10 pacientes con parálisis cerebral (PC fueron evaluados y tratados con VEPTR por el grupo de escoliosis de la AACD en Sao Paulo. Caracterizados por escoliosis progresiva inmadurez esquelética, sin deformidad grave en el plano sagital. Se evaluó la curva por el método de Cobb en el preoperatorio, posoperatorio, y después de dos años de seguimiento. RESULTADOS: LA CORRECCIón, obtenida con el uso de VEPTR en el posoperatorio inmediato, fue en promedio 41,4% en relación a las radiografías iniciales sin tracción (p = 0,005 y 9,1% (p = 0

  13. Ganho de peso nos pacientes portadores de mielomeningocele após tratamento com prótese vertical expansível de titânio para costela Aumento de peso en pacientes con mielomeningocele después del tratamiento con la prótesis vertical expansible de titanio para costilla Weight gain in patients with myelomeningocele after treatment with vertical expandable prosthetic titanium rib

    Directory of Open Access Journals (Sweden)

    Rafael Marques Ielpo

    2012-09-01

    Full Text Available OBJETIVO: Avaliar o ganho de peso e a variação do estado nutricional dos pacientes portadores de mielomeningocele torácica após o uso da prótese vertical expansível de titânio (VEPTR como opção para tratamento sem fusão da coluna vertebral. MÉTODOS: Estudo retrospectivo de oito pacientes (com média de idade de 5,3 anos; variando de 3,6 a 7,6 anos no momento da cirurgia inicial, portadores de mielomeningocele torácica que apresentavam escoliose, medida pelo método de Cobb, superior a 40º e cifose superior a 80º, tratados com VEPTR pelo grupo de Escoliose da AACD de São Paulo. Foram analisados os pesos, desvio-padrão em que cada paciente se encontrava na tabela idade versus peso referência da OMS e valores angulares da cifose, no pré-operatório, pós-operatório imediato e pós-operatório tardio. RESULTADOS: Houve ganho absoluto de peso em todos os pacientes, com média de 8,7 kg (variando de 3 a 20 kg. Seis pacientes (75% apresentaram ganho de peso e aumento do valor do desvio padrão, traduzindo-se em aproximação de seu peso com relação à mediana considerada normal da curva idade versus peso referência após o início do tratamento com VEPTR. CONCLUSÃO: O ganho de peso absoluto observado não foi acompanhado de melhora do estado nutricional e não houve relação entre correção da cifose e ganho de peso.OBJETIVO: Evaluar la ganancia de peso y el cambio en el estado nutricional de los pacientes con mielomeningocele torácico después de usar la prótesis vertical expandible de titanio (VEPTR como una opción para el tratamiento sin la fusión de la columna vertebral. MÉTODOS: Estudio retrospectivo de ocho pacientes (edad media de 5,3 años, entre 3,6 y 7,6 años en el momento de la cirugía inicial, con mielomeningocele torácico que tenían escoliosis , medida por el método de Cobb, con valores superiores a 40 º y cifosis mayores de 80 º, tratados con VEPTR en el Grupo de Escoliosis de la AACD en São Paulo. Se

  14. Crystalline cerium(IV) phosphates

    International Nuclear Information System (INIS)

    Herman, R.G.; Clearfield, A.

    1976-01-01

    The ion exchange behaviour of seven crystalline cerium(IV) phosphates towards some of the alkali metal cations is described. Only two of the compounds (A and C) possess ion exchange properties in acidic solutions. Four others show some ion exchange characteristics in basic media with some of the alkali cations. Compound G does not behave as an ion exchanger in solutions of pH + , but show very little Na + uptake. Compound E undergoes ion exchange with Na + and Cs + , but not with Li+. Both Li + and Na + are sorbed by compounds A and C. The results are indicative of structures which show steric exclusion phenomena. (author)

  15. PREPARATION OF OXOPORPHINATOMANGANESE (IV) COMPLEX

    Energy Technology Data Exchange (ETDEWEB)

    Willner, I.; Otvos, J.; Calvin, M.

    1980-07-01

    Oxo-manganese-tetraphenylporphyrin (O=Mn{sup IV}-TPP) has been prepared by an oxygen-transfer reaction from iodosylbenzene to MnIITPP and characterized by its i.r. and field desorption mass spectra, which are identical to those of the product obtained by direct oxidation of Mn{sup III}(TPP) in an aqueous medium; it transfers oxygen to triphenylphosphine to produce triphenylphosphine oxide, and it is suggested that similar intermediates are important in oxygen activation by cytochrome P-450 as well as in the photosynthetic evolution of oxygen.

  16. Test Review: Advanced Clinical Solutions for WAIS-IV and WMS-IV

    Science.gov (United States)

    Chu, Yiting; Lai, Mark H. C.; Xu, Yining; Zhou, Yuanyuan

    2012-01-01

    The authors review the "Advanced Clinical Solutions for WAIS-IV and WMS-IV". The "Advanced Clinical Solutions (ACS) for the Wechsler Adult Intelligence Scale-Fourth Edition" (WAIS-IV; Wechsler, 2008) and the "Wechsler Memory Scale-Fourth Edition" (WMS-IV; Wechsler, 2009) was published by Pearson in 2009. It is a…

  17. Os encantos da Veneza Americana e da propaganda pelo cinema: os filmes financiados pelo governo Sergio Loreto em Pernambuco (1922-1926

    Directory of Open Access Journals (Sweden)

    Luciana Corrêa de Araújo

    2013-06-01

    Full Text Available Este artigo aborda a produção cinematográfica financiada pelo governo Sergio Loreto em Pernambuco (1922-1926. Por meio de textos históricos, pesquisa em periódicos e análise fílmica, pretendemos destacar a relevância do estímulo oficial ao incipiente meio cinematográfico local e analisar como se constroem, nos filmes, as relações entre estratégias de propaganda e procedimentos estéticos e narrativos.

  18. Some oxozirconium(IV) compounds

    Energy Technology Data Exchange (ETDEWEB)

    Paul, R C; Gupta, S K; Parmar, S S; Vasisht, S K [Punjab Univ., Chandigarh (India). Dept. of Chemistry

    1976-01-01

    Some new oxozirconium(IV) complexes, ZrO(An)/sub 2/, ZrO(Gly)/sub 2/, ZrO(HSal)/sub 2/, ZrO(HPth)/sub 2/, ZrO(Pic)/sub 2/(HPic)/sub 2/, and ZrO(Quin)/sub 2/(HQuin)/sub 2/ have been isolated from the reactions of ZrO(CH/sub 3/COO)/sub 2/CH/sub 3/COOH with anthranilic acid (HAn), glycine (HGly), salicylic acid (H/sub 2/Sal), phthalic acid (H/sub 2/Pth), picolinic acid (HPic), and 8-quinolinol (HQuin) respectively. Their important infrared bands and wherever possible molar conductance and molecular weight have been reported.

  19. Genetics Home Reference: glycogen storage disease type IV

    Science.gov (United States)

    ... Home Health Conditions Glycogen storage disease type IV Glycogen storage disease type IV Printable PDF Open All ... Javascript to view the expand/collapse boxes. Description Glycogen storage disease type IV (GSD IV) is an ...

  20. A cerium(IV)-carbon multiple bond

    Energy Technology Data Exchange (ETDEWEB)

    Gregson, Matthew; Lu, Erli; McMaster, Jonathan; Lewis, William; Blake, Alexander J.; Liddle, Stephen T. [Nottingham Univ. (United Kingdom). School of Chemistry

    2013-12-02

    Straightforward access to a cerium(IV)-carbene complex was provided by one-electron oxidation of an anionic ''ate'' cerium(III)-carbene precursor, thereby avoiding decomposition reactions that plague oxidations of neutral cerium(III) compounds. The cerium(IV)-carbene complex is the first lanthanide(IV)-element multiple bond and involves a twofold bonding interaction of two electron pairs between cerium and carbon. [German] Auf direktem Wege zu einem Cer(IV)-Carbenkomplex gelangt man durch die Einelektronenoxidation einer anionischen Carben-Cerat(III)-Vorstufe. So werden Zersetzungsprozesse vermieden, die die Oxidation neutraler Cer(III)-Verbindungen erschweren. Der Cer(IV)-Carbenkomplex enthaelt die erste Lanthanoid(IV)-Element-Mehrfachbindung; dabei binden Cer und Kohlenstoff ueber zwei Elektronenpaare.

  1. iväkoti Riemula

    OpenAIRE

    Alanko, Reetta; Ihanamäki, Katja

    2012-01-01

    Opinnäytetyössä kuvataan yleisesti päivähoidon kehitystä Suomessa sekä päivähoitoa yrittäjän näkökulmasta, tuoden esille sen tämän päivän haasteet ja mahdollisuudet. Työssä on pohdittu yhteistyön merkitystä kunnan kanssa ja sitä, miten kunta voi osaltaan joko rajoittaa tai edesauttaa yksityisen päivähoitoyrityksen toimintaa. Opinnäytetyössä kerrotaan teoriassa Päiväkoti Riemula nimisen, erityispäivähoitopalveluita tarjoavan yrityksen perustamiseen liittyvistä suunnitelmista. Suunnitelluss...

  2. Respuesta reproductiva de ovejas de pelo sincronizadas con progesterona o prostaglandinas

    OpenAIRE

    Arroyo-Ledezma, Jaime; De La Torre-Barrera, Jannette; Ávila-Serrano, N. Ysac

    2013-01-01

    La sincronización ajusta los estros a tiempos específicos y permite usar tecnologías reproductivas. El objetivo de este estudio fue evaluar la respuesta reproductiva de 30 ovejas de pelo sincronizadas con progesterona (P4) o prostaglandinas. Las ovejas de pelo eran 5/8 Pelibuey x 2/8 Black Belly x 1/8 Dorper, de 3.5 a 4.0 años de edad, con peso promedio de 37.8 ±3.0 kg; el último parto fue 8 meses previos al experimento. Los tratamientos fueron; 1) aplicación por 11 d de 300 mg de P4 impregna...

  3. EXPRESSÕES ORAIS POPULARES UTILIZADAS PELO POVO DO LAVRADO EM RORAIMA

    Directory of Open Access Journals (Sweden)

    Sebastião Pereira Nascimento

    2016-08-01

    Full Text Available São apresentadas 564 expressões orais populares utilizadas pelos habitantes do lavrado em Roraima. A maioria dos significados dos termos é originária da herança cultural trazida pelo povo nordestino radicado nos Campos do Rio Branco desde o século XIX. As línguas indígenas também têm influência nestas expressões orais locais, com destaque para as famílias linguísticas Karib e Aruak. Alguns termos têm influências culturais de outras regiões brasileiras e fragmentos de línguas estrangeiras.

  4. Asma induzida pelo exercício: aspectos atuais e recomendações

    OpenAIRE

    Laitano,Orlando; Meyer,Flávia

    2007-01-01

    OBJETIVO: Descrever os mecanismos da asma induzida pelo exercício (AIE), bem como os efeitos de diferentes tipos de treinamento físico na função pulmonar e nas capacidades aeróbia e anaeróbia. Destaca-se a importância de um diagnóstico correto mediante o teste de exercício e, no manejo, o uso de drogas beta-adrenérgicas e anticolinérgicas. FONTE DOS DADOS: Os artigos foram criteriosamente escolhidos utilizando as bases de dados PubMed e Scielo pelo ano de publicação e dando preferência a ensa...

  5. Extended analysis of Cu IV

    International Nuclear Information System (INIS)

    Meinders, E.; Uijlings, P.

    1980-01-01

    Wavelength data and classifications of 974 Cu IV lines in the region 750-1275 Angstroem are presented. Most of the lines have been classified as transitions from the previously unknown high even configurations 3d 7 5s and 3d 7 4d to 3d 7 4p. The configuration 3d 7 4d is seriously perturbed by 3d 6 4s 2 . The analysis resulted in the identification of 27 levels of 3d 7 5s and 113 levels of (3d 7 4d + 3d 6 4s 2 ) which are reported. The earlier published levels of 3d 7 4s and 3d 7 4p have to be shifted downward as a consequence of improved wavelength data. Radial paramter values, resulting from least-squares fits, are compared to Hartree-Fock values. The eigenvectors obtained in the parametric fitting are used to calculate transition probabilities in intermediate coupling. The relation between the observed intensities of the transitions 3d 7 4d-3d 7 4p and 3d 7 Ss-3d 7 4p is compared to the relation between theoretical values of the transition integrals obtained from Hartree-Fock calculations. A spectroscopic value for the ionization potentials is calculated from the 3d 7 ns configurations. (orig.)

  6. Studies of binary cerium(IV)-praseodymium(IV) and cerium(IV)-terbium(IV) oxides as pigments for ceramic applications

    International Nuclear Information System (INIS)

    Furtado, L.M.L.

    1991-01-01

    It was investigated a series of pigments of general composition Ce 1-x Pr x O 2 , and Ce x Tb y O 2 , exhibiting radish and brown colors, respectively, and high temperature stability. The pigments were obtained by dissolving appropriate amounts of the pure lanthanide oxides in acids and precipitating the rare earths as mixed oxalates, which were isolated and calcined under air, at 1000 0 C. X-Ray powder diffractograms were consistent with a cubic structure for the pigments. Magnetic susceptibility measurements, using Gouy method, indicated the presence of Pr(IV) ions in the Ce 1-x Pr x O 2 pigments and of Terbium predominantly as Tb(III) ions in the Ce-tb mixed oxides. A new method, based on suspension of solid samples in PVA-STB gels (STB = sodium tetradecaborate), was employed for the measurements of the electronic spectra of the pigments. The thermal behaviour the pigments was investigated by the calcination of the oxalates in the temperature range of 500 to 1200 O C, from 10 to 60 minutes. (author)

  7. Zirconium (IV) complexes with some polymethylenediimines | Na ...

    African Journals Online (AJOL)

    The syntheses of zirconium (IV) complexes have been carried out by the reaction of oxozirconium (IV) chloride with the appropriate diimines (Schiff bases). The complexes were isolated as yellow solids which are stable to heat. The complexes were found to be insoluble in most solvents. The infrared spectra, elemental ...

  8. Astragaloside IV liposomes ameliorates adriamycin-induced ...

    African Journals Online (AJOL)

    Methods: The rats were given a single tail intravenous injection of adriamycin (6 mg/kg) within 1 week, and then divided into four groups including normal, model, benazepril and astragaloside IV liposomes group. They were all orally administered dosage of benazepril and astragaloside IV liposomes once daily for 8 weeks.

  9. Generation IV reactors: international projects

    International Nuclear Information System (INIS)

    Carre, F.; Fiorini, G.L.; Kupitz, J.; Depisch, F.; Hittner, D.

    2003-01-01

    Generation IV international forum (GIF) was initiated in 2000 by DOE (American department of energy) in order to promote nuclear energy in a long term view (2030). GIF has selected 6 concepts of reactors: 1) VHTR (very high temperature reactor system, 2) GHR (gas-cooled fast reactor system), 3) SFR (sodium-cooled fast reactor system, 4) SCWR (super-critical water-cooled reactor system), 5) LFR (lead-cooled fast reactor system), and 6) MFR (molten-salt reactor system). All these 6 reactor systems have been selected on criteria based on: - a better contribution to sustainable development (through their aptitude to produce hydrogen or other clean fuels, or to have a high energy conversion ratio...) - economic profitability, - safety and reliability, and - proliferation resistance. The 6 concepts of reactors are examined in the first article, the second article presents an overview of the results of the international project on innovative nuclear reactors and fuel cycles (INPRO) within IAEA. The project finished its first phase, called phase-IA. It has produced an outlook into the future role of nuclear energy and defined the need for innovation. The third article is dedicated to 2 international cooperations: MICANET and HTR-TN. The purpose of MICANET is to propose to the European Commission a research and development strategy in order to develop the assets of nuclear energy for the future. Future reactors are expected to be more multiple-purposes, more adaptable, safer than today, all these developments require funded and coordinated research programs. The aim of HTR-TN cooperation is to promote high temperature reactor systems, to develop them in a long term perspective and to define their limits in terms of burn-up and operating temperature. (A.C.)

  10. Thermodynamic data for predicting concentrations of Th(IV), U(IV), Np(IV), and Pu(IV) in geologic environments

    Energy Technology Data Exchange (ETDEWEB)

    Rai, Dhanpat; Roa, Linfeng; Weger, H.T.; Felmy, A.R. [Battelle, Pacific Northwest National Laboratory (PNNL) (United States); Choppin, G.R. [Florida State University (United States); Yui, Mikazu [Waste Isolation Research Division, Tokai Works, Japan Nuclear Cycle Development Inst., Tokai, Ibaraki (Japan)

    1999-01-01

    This report provides thermodynamic data for predicting concentrations of Th(IV), U(IV), Np(IV), and Pu(IV) in geologic environments, and contributes to an integration of the JNC chemical thermodynamic database, JNC-TDB (previously PNC-TDB), for the performance analysis of geological isolation system for high-level radioactive wastes. Thermodynamic data for the formation of complexes or compounds with hydroxide, chloride, fluoride, carbonate, nitrate, sulfate and phosphate are discussed in this report. Where data for specific actinide(IV) species was lacking, the data were selected based on chemical analogy to other tetravalent actinides. In this study, the Pitzer ion-interaction model is used to extrapolate thermodynamic constants to zero ionic strength at 25degC. (author)

  11. Materials for generation-IV nuclear reactors

    International Nuclear Information System (INIS)

    Alvarez, M. G.

    2009-01-01

    Materials science and materials development are key issues for the implementation of innovative reactor systems such as those defined in the framework of the Generation IV. Six systems have been selected for Generation IV consideration: gas-cooled fast reactor, lead-cooled fast reactor, molten salt-cooled reactor, sodium-cooled fast reactor, supercritical water-cooled reactor, and very high temperature reactor. The structural materials need to resist much higher temperatures, higher neutron doses and extremely corrosive environment, which are beyond the experience of the current nuclear power plants. For this reason, the first consideration in the development of Generation-IV concepts is selection and deployment of materials that operate successfully in the aggressive operating environments expected in the Gen-IV concepts. This paper summarizes the Gen-IV operating environments and describes the various candidate materials under consideration for use in different structural applications. (author)

  12. De H. Cleckley ao DSM-IV-TR: a evolução do conceito de psicopatia rumo à medicalização da delinquência

    Directory of Open Access Journals (Sweden)

    Rogério Paes Henriques

    2009-06-01

    Full Text Available A psicopatia é descrita como personalidade antissocial pelos manuais nosográficos contemporâneos: CID-10 e DSM-IV-TR. Contrastando tais nosografias entre si quanto aos critérios diagnósticos propostos para a psicopatia, assinalam-se as consequências de sua operacionalização, promovida, sobretudo, pelo DSM. Dentre elas, destacam-se: (1 a degradação do diagnóstico ao mero levantamento protocolar; (2 a acentuação da correlação histórica entre psicopatia e delinquência.

  13. Desarrollo de aleaciones multifuncionales con base titanio

    OpenAIRE

    Pareja, Ramiro

    2007-01-01

    El Laboratorio de Materiales Nano-estructurados y Multifuncionales del Departamento de Física de la Universidad Carlos III de Madrid se dedica al desarrollo, procesado y caracterización de aleaciones con propiedades mejores que las preparadas por métodos convencionales. La mejora de las propiedades se consigue produciendo las aleaciones con un tamaño de grano nanométrico o ultrafino, o introduciendo una dispersión de nano-partículas de óxido en la matriz. El grupo está interesado en algún tip...

  14. Adduct formation in Ce(IV) thenolytrifluoroacetonate

    International Nuclear Information System (INIS)

    Anufrieva, S.I.; Polyakova, G.V.; Snezhko, N.I.; Pechurova, N.I.; Martynenko, L.I.; Spitsyn, V.I.

    1982-01-01

    The literature contains no information on adduct formation in Ce(IV) β-diketonates with additional ligands. Since tetrakis-β-diketonates of Ce(IV) have four six-membered chelate rings, we can suppose that the introduction of an additional monodentate or bidentate ligand into the coordination sphere of Ce(IV) β-diketonates would lead to an increase in the coordination number (CN) of the Ce(IV) to nine or ten. The possibility of realization of such a high CN for Ce(IV) has not been proved; a study of adduct formation by Ce(IV) tetrakis-β-diketonates is thus of theoretical interest. Such an investigation might also be of practical interest, because the introduction of an additional ligand into the coordination sphere of a rare-earth β-diketonate usually increases the solubility of the β-diketonate in nonpolar solvents and increases the volatility of the compound; such a modification of the properties is important for various practical purposes. The aim of our work was to study the possibility of separating solid adducts of Ce(IV) tetrakis-thenoyltrifluoroacetonate with certain oxygen-containing and nitrogen-containing donor monodentate and bidentate ligands, and also to investigate their properties. As the β-diketone we used thenoyltrifluoroacetone (HTTFA), since in a parallel investigation it was found that Ce(TTFA) 4 has a high oxidation-reduction stability

  15. The concept of ’Musa-pelo and the medicinal use of shrubby legumes (Fabaceae in Lesotho

    Directory of Open Access Journals (Sweden)

    A. Moteetee

    2007-08-01

    Full Text Available In the Kingdom of Lesotho, 20 plant species are commonly known as  'Musa-pelo. The term literally means ‘the one who brings back or tums around the heart’.  'Musa-pelo is traditionally used as a sedative and is given as a first aid treatment to bereaved people who are under severe psychological duress or stress. Of the 20 species known as  'Musa-pelo, 17 belong to nine genera of the Fabaceae  (Argyrolobium, Crotalaria, Indigofera, Lessertia, Lotononis, Melolobium, Sutherlandia, Tephrosia and  Trifolium. The three remaining species namely Cleome monophylla, Heliophila carnosa and  Cysticapnos pruinosa, belong to the families Capparaceae, Brassicaceae and Fumariaceae, respectively. In this paper, the concept of 'Musa-pelo in traditional medicine is explored.

  16. Market opportunities: U.S. - PADD IV

    International Nuclear Information System (INIS)

    Garner, R.P.

    1997-01-01

    The current supply and demand balance, the short and long term expectations and marketing opportunities for Canadian crude oil in PADD IV, the Rocky Mountain region in the US, were reviewed. It was suggested that market opportunities in PADD IV are derived from the following four factors: (1) crude oil declines within that area, (2) federal regulations, (3) competitive presence with markets, and (4) population growth. The overall conclusion was that Canadian producers and PADD IV refiners will be looking at an ever-growing relationship based on freight equalized world crude prices. 8 tabs., 5 figs

  17. A diversidade de lagartos na Caatinga é mediada pelos térmitas?

    OpenAIRE

    Souza, Heitor Bruno de Araujo

    2012-01-01

    Ao tentar explicar a extraordinária taxa de coexistência de lagartos em desertos Australianos, Morton & James (1988) formularam uma hipótese em que a diversidade de térmitas promoveria uma diversificação dos lagartos. O presente estudo visa verificar se essa hipótese é válida para as taxocenoses de lagartos da Caatinga. Objetiva-se também verificar se os mecanismos de defesa dos térmitas influenciam a taxa com que esses são consumidos pelos lagartos e se esse padrão difere entre diferentes li...

  18. Diorganotin(IV) Complexes with Methionine Methyl Ester. Equilibria ...

    African Journals Online (AJOL)

    IV) (DBT) and diphenyltin(IV) (DPT) was investigated at 25 °C and 0.1 mol dm–3 ionic strength in water for dimethyltin(IV) and in 50 % dioxane–water mixture for dibutyltin(IV) and diphenyltin(IV). Methionine methyl ester forms1:1 and 1:2 ...

  19. Periodontal Disease Part IV: Periodontal Infections

    OpenAIRE

    Turnbull, Robert S.

    1988-01-01

    In Part IV of this article, the author describes two periodontal infections, acute necrotizing ulcerative gingivitis (trench mouth) and periodontal abscess, both acute painful conditions for which patients may seek advice from their family physician rather than their dentist.

  20. Safety assessment for Generation IV nuclear systems

    International Nuclear Information System (INIS)

    Leahy, T.J.

    2012-01-01

    The Generation IV International Forum (GIF) Risk and Safety Working Group (RSWG) was created to develop an effective approach for the safety of Generation IV advanced nuclear energy systems. Recent RSWG work has focused on the definition of an integrated safety assessment methodology (ISAM) for evaluating the safety of Generation IV systems. ISAM is an integrated 'tool-kit' consisting of 5 analytical techniques that are available and matched to appropriate stages of Generation IV system concept development: 1) qualitative safety features review - QSR, 2) phenomena identification and ranking table - PIRT, 3) objective provision tree - OPT, 4) deterministic and phenomenological analyses - DPA, and 5) probabilistic safety analysis - PSA. The integrated methodology is intended to yield safety-related insights that help actively drive the evolving design throughout the technology development cycle, potentially resulting in enhanced safety, reduced costs, and shortened development time

  1. Determination of uranium (IV) by flow voltammetry

    International Nuclear Information System (INIS)

    Ding Anqing

    1987-01-01

    According to the quantitative reaction of U(IV) and Fe(III) in H 2 SO 4 as well as the relation between current and concentration of substance detected, U(IV) has been determined indirectly by measurement of the electrolysis current of residual Fe(III). The columniform electrode used is made of glass carbon particles. At the range of U(IV) from a few micrograms to 40 μg, the linear relation is excellent. The relative standard deviation is within ±4%. The interference of Fe(II), Ti(IV) and U(VI) is negligible but of Ti(III) is serious. This method has been successfully applied in the determination of actual samples (both out line and on line). Main advantages of this procedure are rapid, simple, small amount of sample (only at microgram level) and easy to realize automation, able to use for on line or process analysis

  2. IV&V Project Assessment Process Validation

    Science.gov (United States)

    Driskell, Stephen

    2012-01-01

    The Space Launch System (SLS) will launch NASA's Multi-Purpose Crew Vehicle (MPCV). This launch vehicle will provide American launch capability for human exploration and travelling beyond Earth orbit. SLS is designed to be flexible for crew or cargo missions. The first test flight is scheduled for December 2017. The SLS SRR/SDR provided insight into the project development life cycle. NASA IV&V ran the standard Risk Based Assessment and Portfolio Based Risk Assessment to identify analysis tasking for the SLS program. This presentation examines the SLS System Requirements Review/System Definition Review (SRR/SDR), IV&V findings for IV&V process validation correlation to/from the selected IV&V tasking and capabilities. It also provides a reusable IEEE 1012 scorecard for programmatic completeness across the software development life cycle.

  3. Genetics Home Reference: mucopolysaccharidosis type IV

    Science.gov (United States)

    ... enzymes, GAGs accumulate within cells, specifically inside the lysosomes . Lysosomes are compartments in the cell that break down ... that cause molecules to build up inside the lysosomes are called lysosomal storage disorders. In MPS IV, ...

  4. Current status of NPP generation IV

    International Nuclear Information System (INIS)

    Yohanes Dwi Anggoro; Dharu Dewi; Nurlaila; Arief Tris Yuliyanto

    2013-01-01

    Today development of nuclear technology has reached the stage of research and development of Generation IV nuclear power plants (advanced reactor systems) which is an innovative development from the previous generation of nuclear power plants. There are six types of power generation IV reactors, namely: Very High Temperature Reactor (VHTR), Sodium-cooled Fast Reactor (SFR), Gas-cooled Fast Reactor (GFR), Lead-cooled Fast Reactor (LFR), Molten Salt Reactor (MSR), and Super Critical Water-cooled Reactor (SCWR). The purpose of this study is to know the development of Generation IV nuclear power plants that have been done by the thirteen countries that are members of the Gen IV International Forum (GIF). The method used is review study and refers to various studies related to the current status of research and development of generation IV nuclear power. The result of this study showed that the systems and technology on Generation IV nuclear power plants offer significant advances in sustainability, safety and reliability, economics, and proliferation resistance and physical protection. In addition, based on the research and development experience is estimated that: SFR can be used optimally in 2015, VHTR in 2020, while NPP types GFR, LFR, MSR, and SCWR in 2025. Utilization of NPP generation IV said to be optimal if fulfill the goal of NPP generation IV, such as: capable to generate energy sustainability and promote long-term availability of nuclear fuel, minimize nuclear waste and reduce the long term stewardship burden, has an advantage in the field of safety and reliability compared to the previous generation of NPP and VHTR technology have a good prospects in Indonesia. (author)

  5. Dsm-iv hypochondriasis in primary care

    OpenAIRE

    Escobar, JI; Gara, M; Waitzkin, H; Silver, RC; Holman, A; Compton, W

    1998-01-01

    The object of this study was to assess the prevalence and correlates of the DSM-IV diagnosis of hypochondriasis in a primary care setting. A large sample (N = 1456) of primary care users was given a structured interview to make diagnoses of mood, anxiety, and somatoform disorders and estimate levels of disability. The prevalence of hypochondriasis (DSM-IV) was about 3%. Patients with this disorder had higher levels of medically unexplained symptoms (abridged somatization) and were more impair...

  6. COBRA-IV wire wrap data comparisons

    International Nuclear Information System (INIS)

    Donovan, T.E.; George, T.L.; Wheeler, C.L.

    1979-02-01

    Thermal hydraulic analyses of hexagonally packed wire-wrapped fuel assemblies are complicated by the induced crossflow between adjacent subchannels. The COBRA-IV computer code simultaneously solves the hydrodynamics and thermodynamics of fuel assemblies. The modifications and the results are presented which are predicted by the COBRA-IV calculation. Comparisons are made with data measured in five experimental models of a wire-wrapped fuel assembly

  7. Conhecendo as estrategias de acao e interacao utilizadas pelos clientes para o enfrentamento da dialise peritoneal

    Directory of Open Access Journals (Sweden)

    Felipe Kaezer dos Santos

    2013-09-01

    Full Text Available Este artigo teve por objetivo apresentar as principais estratégias de ação e interação utilizadas pelos clientes portadores de doença renal crônica para o enfrentamento da diálise peritoneal. O referencial teórico utilizado foi o Interacionismo Simbólico, por ser um arcabouço que valoriza o significado da interação como determinante do comportamento humano. A Teoria Fundamentada nos Dados foi utilizada como referencial metodológico. Após a sua obtenção, realizada por meio de um roteiro de entrevista semi-estruturado, os dados foram gravados, transcritos, codificados e organizados para compor a teoria explicativa sobre o fenômeno estudado. Durante a análise foram identificados vários recursos utilizados pelos clientes, como a necessidade de obter informações sobre a diálise peritoneal, o refúgio na espiritualidade e a falsa ilusão da cura. Destaca-se também a importância da rede de apoio, em que o enfermeiro poderá atuar como facilitador do processo de enfrentamento, em prol da adaptação dos clientes à nova realidade.

  8. A Disputa pelo sentido: o jogo de poder na Comunicação Organizacional

    Directory of Open Access Journals (Sweden)

    Márcia Maria Garçon

    2013-12-01

    Full Text Available Este trabalho adotou como aporte teórico, os clássicos de Blumer (1980, Bakhtin (1995, Foucalt (1996 e Galbraith (1986 e os estudos contemporâneos da Comunicação Organizacional pautados no paradigma da produção de sentido (OLIVEIRA; PAULA, 2008 e da gestão sistêmica (YANAZE, 2011 com o objetivo de identificar as relações de poder e luta pelo sentido do projeto social Comunidade Educativa, promovido pela Fundação Bunge na E.E. Henrique Dumont Villares, na capital paulista. Foram realizadas entrevistas qualitativas, em profundidade, com os representantes da Fundação e da Escola e suas narrativas, classificadas em categorias léxico-semânticas de semelhança, complementaridade, diversidade e divergência, sendo posteriormente confrontadas, a fim de identificar o embate dos sentidos. Os resultados apontaram que os interesses particulares pautaram a luta pelo sentido e o poder, que a princípio esteve de posse da Fundação, migrou para o campo dos professores, sendo o significado construído entre estes sujeitos, o hegemônico nesta interação.

  9. “12 ANOS DE ESCRAVIDÃO” E A PAIXÃO PELO REAL

    Directory of Open Access Journals (Sweden)

    Luís Gustavo Finger de Oliveira

    2015-12-01

    Full Text Available Este artigo propõe uma reflexão sobre as narrativas audiovisuais contemporâneas marcadas pelo choque do real ou pela paixão pelo real. Em perspectivas semelhantes, os autores defendem a ideia de que, diante da experiência virtualizada e fragmentada atual, as produções audiovisuais construídas a partir da estética realista buscam ofertar um real mais real do que o real, portanto, explícito e contundente, buscando reduzir as mediações e artifícios em seu narrar. A observação deste fenômeno, bem como o estudo das estratégias de autenticação da linguagem audiovisual foram feitas no filme “12 Anos de Escravidão”, de Steve McQueen, vencedor de três Oscars e integrante de uma safra de filmes oscarizados que, em boa parte, foram resultantes da retratação de histórias reais de anônimos.

  10. Nota Fiscal Paulista: principais características percebidas pelos cidadãos paulistas

    Directory of Open Access Journals (Sweden)

    Sérgio Roberto da Silva

    2018-03-01

    Full Text Available Estima-se que 60% dos valores de tributos são sonegados pelo varejo (ROLLI e FERNANDES, 2008. Como resposta o governo Paulista criou o projeto NFP-Nota Fiscal Paulista. Nesse projeto a identificação do contribuinte através do CPF gera créditos (benefícios financeiros ao comprador/contribuinte e assegura o pagamento dos tributos por parte do fornecedor/ comerciante. O objetivo deste trabalho foi identificar as  principais características percebidas pelos cidadãos paulistas com relação ao projeto.  A pesquisa envolveu 132 pessoas em um formulário com 25 assertivas no estilo Likert.  Os resultados indicam que os contribuintes aceitam e participam do projeto. No entanto desconhecem outras características do projeto, por exemplo, doação de créditos a instituições filantrópicas. A maior forma de ressarcimento dos créditos é o depósito em conta corrente. Parte dos contribuintes acredita que as informações referentes aos valores de credito não são repassados a Receita Federal. Dessa forma busca-se contribuir com um estudo sob a ótica dos contribuintes em relação a esse projeto.Nota Fiscal Paulista, análise fatorial, sonegação de tributos

  11. O impacto de um projeto de educação pelo esporte no desenvolvimento infantil

    Directory of Open Access Journals (Sweden)

    Paula Xavier Machado

    Full Text Available Este artigo trata de um estudo com pré-teste (T1 e pós-teste (T2 que avaliou o impacto de um projeto esportivo no desenvolvimento infantil. Participaram 39 estudantes de 6 a 11 anos, matriculados da 1a a 4a séries do Ensino Fundamental de escola pública. Eles foram distribuídos em dois grupos: G1 (24 integrantes do projeto esportivo e G2 (15 crianças do grupo comparativo e os professores dos estudantes também participaram. O impacto foi avaliado pelas diferenças em desempenho escolar, stress, qualidade de vida e avaliação de atitudes acadêmicas e sociais do aluno pelo professor. De T1 para T2, houve aumento significativo no desempenho escolar em G1 e G2. O stress diminuiu para todas as crianças, de T1 para T2, embora seja significativo apenas para G1. A percepção da qualidade de vida diminuiu, entre T1 e T2, para G1 e G2, sendo significativo apenas para G2. Não houve diferença significativa na avaliação dos alunos de G1 e G2, em T1 e T2, pelos professores.

  12. Cartografia do lugar de moradia dos adolescentes com passagem pelo CENSE I de Londrina

    Directory of Open Access Journals (Sweden)

    Claudemir Zulim

    2011-07-01

    Full Text Available Este artigo apresenta os resultados da análise dos dados documentais obtidos na pesquisa realizada no Centro de Socioeducação I - CENSE I, de Londrina, que objetiva identificar, mapear e analisar as condições sócio-espaciais dos bairros de origem dos adolescentes com passagem pela Unidade. O CENSE I é uma unidade de internação provisória por onde passam todos os adolescentes apreendidos em flagrante de ato infracional e encaminhados à autoridade policial competente, que avalia se eles serão liberados para seus familiares ou se de acordo com a gravidade dos fatos que eles sejam ouvidos pelo representante do Ministério Público, enquanto aguardam as entrevistas para a realização das oitivas junto ao Juizado da Vara da Infância e Adolescência. Analisa os dados sobre o lugar de moradia dos adolescentes com passagem pela Unidade no ano de 2009. Utiliza as técnicas de Cartografia e de programas específicos com os quais foram produzidos gráficos e mapas onde são facilmente visualizados os locais de residência desses adolescentes. Verifica que os locais de maior concentração de adolescentes com passagem pelo CENSE I também concentram graves problemas sócio-espaciais, geralmente ligados a ocupações irregulares e em fundos de vale.

  13. Synthesis and characterization of chiral thorium(IV) and uranium(IV) benzamidinate complexes

    Energy Technology Data Exchange (ETDEWEB)

    Schoene, Sebastian; Maerz, Juliane; Kaden, Peter; Patzschke, Michael; Ikeda-Ohno, Atsushi [Helmholtz-Zentrum Dresden-Rossendorf e.V., Dresden (Germany). Chemistry of the F-Elements

    2017-06-01

    Two chiral benzamidinate complexes of tetravalent actinides (Th(IV) and U(IV)) were synthesized using a salt metathesis reaction of the corresponding actinide(IV) tetrachlorides and the potassium salt of the chiral benzamidine (S,S)-N,N-Bis-(1-phenylethyl)-benzamidine ((S)-HPEBA). The structure of the complexes was determined with single crystal X-ray diffraction. These are the first examples of chiral amidinate complexes of actinides.

  14. Solubility study of Tc(IV) oxides

    International Nuclear Information System (INIS)

    Liu, D.J.; Fan, X.H.

    2005-01-01

    The deep geological disposal of the high level radioactive wastes is expected to be a safer disposal method in most countries. The long-lived fission product 99 Tc is present in large quantities in nuclear wastes and its chemical behavior in aqueous solution is of considerable interest. Under oxidizing conditions technetium exists as the anionic species TcO 4 - whereas under the reducing conditions, expected to exist in a deep geological repository, it is generally predicted that technetium will be present as TcO 2 ·nH 2 O. Hence, the mobility of Tc(IV) in reducing groundwater may be limited by the solubility of TcO 2 ·nH 2 O under these conditions. Due to this fact it is important to investigate the solubility of TcO 2 ·nH 2 O. The solubility determines the release of radionuclides from waste form and is used as a source term in radionuclide migration analysis in performance assessment of radioactive waste repository. Technetium oxide was prepared by reduction of a technetate solution with Sn 2 + . The solubility of Tc(IV) oxide has been determined in simulated groundwater and redistilled water under aerobic and anaerobic conditions. The effects of pH and CO 3 2- concentration of solution on solubility of Tc(IV) oxide were studied. The concentration of total technetium and Tc(IV) species in the solutions were periodically determined by separating the oxidized and reduced technetium species using a solvent extraction procedure and counting the beta activity of the 99 Tc with a liquid scintillation counter. The experimental results show that the rate of oxidation of Tc(IV) in simulated groundwater and redistilled water is about (1.49-1.86) x 10 -9 mol/(L·d) under aerobic conditions, but Tc(IV) in simulated groundwater and redistilled water is not oxidized under anaerobic conditions. Under aerobic or anaerobic conditions the solubility of Tc(IV) oxide in simulated groundwater and redistilled water is equal on the whole after centrifugation or ultrafiltration. The

  15. Solubility of Tc(IV) oxides

    International Nuclear Information System (INIS)

    Liu, D.J.; Fan, X.H.

    2005-01-01

    Full text of publication follows: The deep geological disposal of the high level radioactive wastes is expected to be a safer disposal method in most countries. The long-lived fission product 99 Tc is present in large quantities in nuclear wastes and its chemical behavior in aqueous solution is of considerable interest. Under the reducing conditions, expected to exist in a deep geological repository, it is generally predicted that technetium will be present as TcO 2 .nH 2 O. The solubility of Tc(IV) is used as a source term in performance assessment of radioactive waste repository. Technetium oxide was prepared by reduction of a technetate solution with Sn 2+ . The solubility of Tc(IV) oxide has been determined in simulated groundwater and re-distilled water under aerobic and anaerobic conditions. The effects of pH and CO 3 2- concentration of solution on solubility of Tc(IV) oxide were studied. The concentration of total technetium and Tc(IV) species in the solutions were periodically determined by separating the oxidized and reduced technetium species using a solvent extraction procedure and counting the beta activity of the 99 Tc with a liquid scintillation counter. The experimental results show that the rate of oxidation of Tc(IV) in simulated groundwater and re-distilled water is about (1.49∼1.86) x 10 -9 mol/(L.d) under aerobic conditions, but Tc(IV) in simulated groundwater and re-distilled water is not oxidized under anaerobic conditions. Under aerobic or anaerobic conditions the solubility of Tc(IV) oxide in simulated groundwater and re-distilled water is equal on the whole after centrifugation or ultrafiltration. The solubility of Tc(IV) oxide decreases with the increase of pH at pH 10 and is pH independent in the range 2 -8 to 10 -9 mol/L at 2 3 2- concentration. These data could be used to estimate the Tc(IV) solubility for cases where solubility limits transport of technetium in reducing environments of high-level waste repositories. (authors)

  16. OS BENEFÍCIOS PERCEBIDOS PELOS PRINCIPAIS STAKEHOLDERS DE UMA REDE DE EMPRESAS

    Directory of Open Access Journals (Sweden)

    Caroline Metzger

    2008-01-01

    Full Text Available O presente artigo retrata um estudo relacionado aos benefícios percebidos pelos principais stakeholders de uma rede de empresas. Para tanto, desenvolveu-se uma pesquisa bibliográfica sobre a pequena empresa, os antecedentes históricos das redes de empresas, os conceitos relacionados, as tipologias e características estruturais, os benefícios proporcionados pelas redes e apresentou-se o Programa Redes de Cooperação no Estado do Rio Grande do Sul. Descreveram-se também os conceitos de stakeholders, as suas classificações e os benefícios do relacionamento destes grupos. Considerando este contexto, o objetivo deste artigo foi identificar e analisar os benefícios percebidos pelos principais stakeholders envolvidos com a rede de cooperação Hipereletro. A metodologia utilizada foi o estudo de caso a partir dos dados coletados através da pesquisa de campo, por meio de um questionário aplicado a quatro grupos envolvidos com a Hipereletro. Após a análise dos dados, identificaram-se os benefícios percebidos por cada stakeholder. Os associados perceberam benefícios nas ações de marketing, nas negociações em conjunto e no relacionamento entre as empresas, destacam-se as promoções realizadas pelo grupo, obtenção de melhores preços nas compras e troca de informações, conhecimentos e experiências. Já os funcionários apontaram a melhora na apresentação da empresa, realização de eventos e a troca de informações entre as lojas. Para os fornecedores, os primeiros reflexos da parceria com a rede foram o aumento das vendas, a garantia de pagamento e a fidelidade das empresas. E, quanto aos clientes, destacaram-se a percepção em relação à mudança da fachada da loja, as promoções e a diferença nos preços dos produtos. Pela pesquisa, concluiu-se que todos percebem benefícios ao se relacionarem com a rede, alguns mais, outros menos. Porém, devido ao pouco tempo de existência da Hipereletro, todos acreditam no

  17. High cost of stage IV pressure ulcers.

    Science.gov (United States)

    Brem, Harold; Maggi, Jason; Nierman, David; Rolnitzky, Linda; Bell, David; Rennert, Robert; Golinko, Michael; Yan, Alan; Lyder, Courtney; Vladeck, Bruce

    2010-10-01

    The aim of this study was to calculate and analyze the cost of treatment for stage IV pressure ulcers. A retrospective chart analysis of patients with stage IV pressure ulcers was conducted. Hospital records and treatment outcomes of these patients were followed up for a maximum of 29 months and analyzed. Costs directly related to the treatment of pressure ulcers and their associated complications were calculated. Nineteen patients with stage IV pressure ulcers (11 hospital-acquired and 8 community-acquired) were identified and their charts were reviewed. The average hospital treatment cost associated with stage IV pressure ulcers and related complications was $129,248 for hospital-acquired ulcers during 1 admission, and $124,327 for community-acquired ulcers over an average of 4 admissions. The costs incurred from stage IV pressure ulcers are much greater than previously estimated. Halting the progression of early stage pressure ulcers has the potential to eradicate enormous pain and suffering, save thousands of lives, and reduce health care expenditures by millions of dollars. Copyright © 2010 Elsevier Inc. All rights reserved.

  18. Direct complexonometric determination of thorium (IV), uranium (IV), neptunium (IV), plutonium (IV) by titration of diethylenetriaminepentaacetic acid with xylenol orange as indicator

    International Nuclear Information System (INIS)

    Rykov, A.G.; Piskunov, E.M.; Timofeev, G.A.

    1975-01-01

    The purpose of the present work was to develop a method of determining Th(IV), U(IV), Np(N) and Pu(IV) in acid solutions by titration with diethylenetriamine pentacetic acid, the indicator being xylenol orange. It has been established that Th, U, Np and Pu can be determined to within 0.5-1.5%. Th and U in quantities of tens of milligrams can be determined with greater accuracy, attaining hundredths of one per cent. During titration the determination is not hindered by singly- and doubly-charged metal ions, trivalent lanthanides and actinides, except plutonium. The proposed method can be used to determine U(IV) in the presence of considerable quantities of U(VI) and Np(IV) in the presence of Np(V). Total concentrations of uranium or neptunium are determined by reducing uranium (VI) or neptunium (V) by a standard method (for example, using metallic lead, cadmium or zinc amalgam) to the tetravalent state and applying the method described in the paper. (E.P.)

  19. The Contribution of IVS to IGGOS

    Science.gov (United States)

    Nothnagel, A.

    2002-05-01

    Since its inauguration in 1999, the International VLBI Service for Geodesy and Astrometry has made significant progress in the coordination and utilisation of worldwide VLBI resources. Improving the visibility of the IVS components to a wider public in turn led to a higher motivation of the individuals to contribute to the global effort. Not only the number of IVS components but also their investments in terms of funds and manpower demonstrate the increased awareness of the importance of this joint international endeavour. The different demands of the users but also of the contributors often require the definition of priorities which are only being acceptable due to the existence of a strong umbrella organisation like the IVS. Significant progress has also been made in the area of routine data analysis and combination of results. By now, six IVS Analysis Centers provide the redundancy necessary for a robust combination of the results. The use of ITRF2000 station coordinates as the basis for the IVS combined EOP series is the most recent step towards the generation of a consistent chain from the quasi-inertial frame of radio sources to system Earth.

  20. Solubility studies of Np(IV)

    International Nuclear Information System (INIS)

    Zhang Yingjie; Yao Jun; Jiao Haiyang; Ren Lihong; Zhou Duo; Fan Xianhua

    2001-01-01

    The solubility of Np(IV) in simulated underground water and redistilled water has been measured with the variations of pH(6-12) and storage time (0-100 d) in the presence of reductant (Na 2 S 2 O 4 , metallic Fe). All experiments are performed in a low oxygen concentration glove box containing high purity Ar(99.99%), with an oxygen content of less than 5 x 10 -6 mol/mol. Experimental results show that the variation of pH in solution has little effect on the solubility of Np(IV) in the two kinds of water; the measured solubility of Np(IV) is affected by the composition of solution; with Na 2 S 2 O 4 as a reductant, the solubility of Np(IV) in simulated underground water is (9.23 +- 0.48) x 10 -10 mol/L, and that in redistilled water is (8.31 +- 0.35) x 10 -10 mol/L; with metallic Fe as a reductant, the solubility of Np(IV) in simulated underground water is (1.85 +- 0.56) x 10 -9 mol/L, and that in redistilled water is (1.48 +- 0.66) x 10 -9 mol/L

  1. Auto cuidado no tratamento pelo método de Ilizarov: um estudo de caso

    Directory of Open Access Journals (Sweden)

    Marisa Toshiko Ono Tashiro

    1995-03-01

    Full Text Available As autoras realizaram um estudo de caso com aplicação do modelo de auto cuidado de Dorothea Orem, no tratamento pelo método de Ilizarov, utilizando cuidados e orientações específicas para a recuperação e prevenção de complicações. A operacionalização do estudo constou de procedimentos relativos às demandasdecuida dos universais e terapêuticos, durante a hospitalização. As demandas foram detectadas no pré-operatório e os cuidados desenvolvidos no pós-operatório, facilitando ao paciente o aprendizado e a realização dos procedimentos necessários a dar continuidade dos mesmos no seu domicílio.

  2. Infecção pelo HIV: descritores de mortalidade em pacientes hospitalizados

    Directory of Open Access Journals (Sweden)

    Luiz Claudio Santos Thuler

    1998-12-01

    Full Text Available OBJETIVO: Estudar os descritores clínico-epidemiológicos da mortalidade em pacientes internados por condições clínicas associadas à infecção pelo HIV. MÉTODO: Estudo retrospectivo de todos os pacientes adultos hospitalizados em 1990, 1992 e 1994 em hospital universitário. Os resultados foram descritos como números absolutos, percentagens e médias, sendo a significância estatística entre as diferenças avaliada pelos testes do qui-quadrado, exato de Fisher ou t de Student, conforme o caso. Um modelo de regressão logística foi elaborado visando a identificar os principais fatores associados ao risco de evolução para o óbito. RESULTADOS: Foram incluídos no estudo 240 pacientes. Entre 1990 e 1994 a idade média dos pacientes aumentou de 35,0 para 36,9 anos, a razão entre os sexos masculino e feminino caiu de 9,8 para 2,0, a proporção de não brancos cresceu de 18,5 para 41,3 e registrou-se um aumento do tempo médio entre a descoberta da infecção pelo HIV e a hospitalização de 0,7 para 2,5 anos. Observou-se a redução do número médio de dias de hospitalização de 31,3 para 25,3 e aumento da proporção de pacientes em acompanhamento ambulatorial de 47,8 para 83,3%. As infecções respiratórias representaram a principal causa de hospitalização (58% e as infecções oportunistas apresentadas com maior freqüência foram: candidíase oral (27,1%, tuberculose (18,3%, pneumonia por Pneumocystis carinii (15,4% e neurotoxoplasmose (10,4%. Na análise multivariada, apenas o tempo de hospitalização menor ou igual a 7 dias (Odds Ratio [OR]=3,88; p=0,02 e a ausência de acompanhamento ambulatorial (OR=3,29; p=0,01 mostraram-se associados a um maior risco de evolução para óbito. CONCLUSÃO: O conhecimento dos fatores associados a um risco aumentado de morte pode ser útil na tomada de decisão frente a pacientes hospitalizados com infecção pelo HIV.

  3. Facilitação da memória olfativa pelo etanol em ratos

    OpenAIRE

    Prediger, Rui Daniel Schröder

    2002-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas. Programa de Pós-Graduação em Farmacologia. Um crescente número de estudos em humanos, e em outros animais, têm revelado uma facilitação dos processos de memória pelo etanol quando este é administrado imediatamente após o treino e os indivíduos são posteriormente testados sem a ação da droga. O objetivo do presente trabalho foi avaliar os efeitos de uma única dose de etanol (0,5; 1,0 e 2,0 g/Kg),...

  4. Democracia digital? Os usos da Internet pelos sindicatos da saúde

    OpenAIRE

    Marques Alves, P.

    2015-01-01

    Os movimentos sindicais dos países capitalistas desenvolvidos vêm enfrentando uma crise profunda desde os anos 70. As suas causas são múltiplas, nelas se mesclando fatores que lhes são exógenos com outros endógenos, remetendo para a sua burocratização. Visando revitalizar-se, eles têm vindo a implementar ações diversificadas, onde se conta a adoção das TIC e da Internet. Este artigo apresenta os resultados de um estudo sobre a adoção e os usos da Internet pelos sindicatos da saúde. Visou-se c...

  5. On the stabilization of niobium(V) solutions by zirconium(IV) and hafnium(IV)

    DEFF Research Database (Denmark)

    Sørensen, E.; Bjerre, A.B.

    1992-01-01

    Niobium cannot be separated from zirconium or hafnium when these elements occur together in solution with common anions such as chloride and sulphate. This is ascribed to the co-polymerization of niobium(V) and the hydrolysed ionic species of zirconium(IV) and hafnium(IV) to form colloidal...

  6. Complexation of the An(IV) by NTA; Complexation des An(IV) par le NTA

    Energy Technology Data Exchange (ETDEWEB)

    Bonin, L. [Paris-11 Univ., 91 - Orsay (France)]|[CEA Valrho, Lab. de Chimie des Actinides (LCA), 30 - Marcoule (France)

    2006-07-01

    In the framework of the Nuclear and Environmental Toxicology program, developed in France, it has been decided to take again the studies concerning the actinides decorporation. A similar study of the neptunium complexation by the citrate ions has been carried out on the complexation of Np(IV) with the nitrilotriacetic acid (NTA). The NTA can be considered as a model molecule of the de-corporating molecules (amino-carboxy- ligand). The results of the spectrophotometric measurements being encouraging, the behaviour of several actinides at the same oxidation state (+IV) (Th(IV), U(IV), Np(IV), and Pu(IV)) has been determined. The experimental results are presented. In order to determine the structure of the complexes of stoichiometry 1:2 An(IV)-(NTA){sub 2} in solution, quantic chemistry calculations and EXAFS measurements have been carried out in parallel. These studies confirm the presence of An(IV)-nitrogen bonds whose length decreases from thorium to plutonium and indicate the presence of a water molecule bound to the thorium and the uranium (coordination number 8 for Np/Pu, 9 for Th/U). The evolution of the complexation constants determined in this study in terms of 1/r (r ionic radius of the cation taking into account its coordination number 8 or 9) confirms the change of the coordination number between Th/U and Np/Pu. (O.M.)

  7. Transuranium perrhenates: Np(IV), Pu(IV) and (III), Am (III)

    International Nuclear Information System (INIS)

    Silvestre, Jean-Paul; Freundlich, William; Pages, Monique

    1977-01-01

    Synthesis in aqueous solution and by solid state reactions, crystallographical characterization and study of the stability of some transuranium perrhenates: Asup(n+)(ReO 4 - )sub(n) (A=Np(IV), Pu(IV), Pu(III), Am(III) [fr

  8. A GESTÃO DO TERRITÓRIO PELO CAPITAL SUCROALCOOLEIRO NO NORTE DO PARANÁ

    Directory of Open Access Journals (Sweden)

    Marcos Antonio de Souza

    2013-02-01

    Full Text Available Toda produção econômica possui uma determinada territorialidade, cuja gestão deste território está orientada no desenvolvimento de estratégias que primem pela rentabilidade da produção, prioritariamente em patamares diferenciais. Partindo-se da premissa de que o território não é uma mera localização, a agroindústria canavieira não se localiza pura e simplesmente em uma base física qualquer. Antes, há uma seletividade espacial marcada pelas disputas territoriais e a partir destas há o exercício do controle sob os elementos necessários para realizar a sua produção, subordinando a terra, a força de trabalho, os recursos naturais ao seu negócio que prima pela reprodução ampliada do capital. Trata-se na verdade de um conjunto de estratégias espaciais, onde o poder econômico ao controlar o território, reserva para si a gestão deste no âmbito do pacto social engendrado pelos grupos hegemônicos, resultando em um território gerido e ordenado pelo capital que aí se territorializou. Nesse contexto, este trabalho busca apresentar as principais estratégias espaciais dos agroindustriais do setor canavieiro desenvolvidas nas últimas três décadas no Norte do Paraná.

  9. Toxicidade ocular causada pelo tamoxifeno: relato de caso Ocular toxicity caused by tamoxifen: case report

    Directory of Open Access Journals (Sweden)

    Eliane Terumi Inada

    2005-08-01

    Full Text Available O objetivo desse trabalho é relatar um caso de toxicidade ocular pelo tamoxifeno. Para isso, aferiu-se a melhor acuidade visual corrigida de ambos os olhos em tabela de Snellen. Foram realizados biomicroscopia do segmento anterior, refração, oftalmoscopia, angiofluoresceinografia e retinografia numa paciente de 63 anos, sexo feminino, cor branca, em uso de tamoxifeno 20 mg/dia há 4 anos, com acuidade visual corrigida de 20/70 e 20/40. A biomicroscopia do segmento anterior apresentava ceratopatia verticilata e catarata nuclear e cortical posterior de 1+/4 em ambos os olhos. À oftalmoscopia, foi verificado alteração do brilho macular de ambos os olhos. E a angiofluoresceinografia mostrou hiperfluorescência na área macular em fase precoce (defeito em janela. Relata-se um caso de ceratopatia e maculopatia causadas pelo tamoxifeno.To report tamoxifen ocular toxicity. The best visual acuity was measured in both eyes with Snellen chart, slit-lamp examination of anterior segment, refraction, dilated fundus examination, fluorescein angiography and retinography in a 63-year-old patient, female, white, using tamoxifen 20 mg/day for 4 years, with 20/70 and 20/40 corrected visual acuity. The anterior segment examination showed corneal linear subepithelial opacity inferior to the visual axis and nuclear and posterior cortical cataract (1+/4 in both eyes. Fundus examination showed alteration of macular color in both eyes. Fluorescein angiography presented hyperfluorescence in the macular area at an early phase (window defect. Report of keratopathy and maculopathy caused by tamoxifen.

  10. O adoecimento pelo cancer de laringe The illness narrative for larynx cancer

    Directory of Open Access Journals (Sweden)

    Márcia Maria Fontão Zago

    2001-06-01

    Full Text Available Com a finalidade de aprimorar a assistência ao laringectomizado, este estudo teve o objetivo de compreender o adoecimento pelo câncer de laringe na visão do paciente e sua família. Participaram do estudo 14 pacientes laringectomizados e familiares, em diferentes períodos pós-operatórios. Na análise das narrativas identificamos categorias que foram interpretadas sob a visão antropológica da cultura. Na interpretação dos participantes, o processo é permeado pelo sofrimento, pela busca de estratégias de enfrentamento, pela valorização de sobreviver à cirurgia, ou seja, pressupostos culturais que diferem do modelo biomédico dos profissionais e que devem ser considerados na sua reabilitação.With the purpose of improving the care of laryngectomized patients, the aim is to understand the illness experience of patients and families of having larynx cancer. The participants were 14 laryngectomized patients and their families, in different post-surgical periods. The narrative analysis searched for categories which were understood on the basis of an anthropological focusing the culture. The understanding that the participants had of the illness experience of having a larynx cancer shows us that this process is one of suffering, of searching of strategies of coping, of evaluating the survival to the surgical treatment, which were based on the cultural system, which is different from the biomedical model of the health professionals and they must be considered in the approach for the rehabilitation.

  11. Oxochloroalkoxide of the Cerium (IV and Titanium (IV as oxides precursor

    Directory of Open Access Journals (Sweden)

    Machado Luiz Carlos

    2002-01-01

    Full Text Available The Cerium (IV and Titanium (IV oxides mixture (CeO2-3TiO2 was prepared by thermal treatment of the oxochloroisopropoxide of Cerium (IV and Titanium (IV. The chemical route utilizing the Cerium (III chloride alcoholic complex and Titanium (IV isopropoxide is presented. The compound Ce5Ti15Cl16O30 (iOPr4(OH-Et15 was characterized by elemental analysis, FTIR and TG/DTG. The X-ray diffraction patterns of the oxides resulting from the thermal decomposition of the precursor at 1000 degreesC for 36 h indicated the formation of cubic cerianite (a = 5.417Å and tetragonal rutile (a = 4.592Å and (c = 2.962 Å, with apparent crystallite sizes around 38 and 55nm, respectively.

  12. Spectroscopy and chemistry of uranium IV

    International Nuclear Information System (INIS)

    Folcher, G.; Rigny, P.

    1980-06-01

    Different fundamental research papers on uranium IV are presented, some were never edited. Molecular spectroscopy was used for identification and structural study of uranium IV in aqueous or organic solutions. The fields studied are: coordination, stereochemistry, electronic structure and chemical properties. For interpretation of results some studies were made with solid compounds or with thorium compounds or thorium complexes. Knowledge of actinides chemistry is improved, uranium and thorium being models for 5 f ions, extractive chemistry is better understood and new applications are possible [fr

  13. Vectorization at the KENO-IV code

    International Nuclear Information System (INIS)

    Asai, K.; Higuchi, K.; Katakura, J.

    1986-01-01

    The multigroup criticality safety code KENO-IV has been vectorized and tested on the FACOM VP-100 vector processor. At first, the vectorized KENO-IV on a scalar processor was slower than the original one by a factor of 1.4 because of the overhead introduced by vectorization. Making modifications of algorithms and techniques for vectorization, the vectorized version has become faster than the original one by a factor of 1.4 on the vector processor. For further speedup of the code, some improvements on compiler and hardware, especially on addition of Monte Carlo pipelines to the vector processor, are discussed

  14. Functions in Free-Format RPG IV

    CERN Document Server

    Martin, Jim

    2009-01-01

    Written especially for programmers adopting a free-format style, this manual explores the role of functions in writing RPG IV programs. Demonstrating the potential of functions, many topics are explored such as details about existing RPG IV built-in functions, writing new functions, using ILE concepts to use C functions, and utilizing IBM API's functions. Explaining how to write small programs, either as sub-procedures or modules, and how to gather those parts together to make programs that are easy to write and maintain, this is a natural next step for programmers familiar with a free-format

  15. Gen IV. Technical and economical aspects

    International Nuclear Information System (INIS)

    Kaluzny, Y.; Legee, F.

    2010-01-01

    In this presentation author deals with development of nuclear reactor type of Generation IV. He concluded that: - Nuclear energy is competitive with regards to the other generation sources; Its competitiveness also increases with CO 2 cost. Considering the nuclear cost breakdown of LWR reactors, it turns out that the uranium is currently not in the range of a threshold for FBR deployment; - The global balance of uranium supply and demand and also innovation required to fulfil GEN IV objectives would probably imply the emergence of fast reactor competitiveness after the turn of the mid-century; - We shall need fast reactors in the coming decade.

  16. Dificuldades enfrentadas pelos pais de crianças com doença do refluxo gastroesofágico

    OpenAIRE

    Cordeiro,Jacqueline Andréia Bernardes Leão; Gualberto,Sacha Martins; Brasil,Virginia Visconde; Oliveira,Grazielle Borges de; Silva,Antonio Márcio Teodoro Cordeiro

    2014-01-01

    Objetivo Identificar as dificuldades enfrentadas pelos pais de crianças com doença do refluxo gastroesofágico.Métodos Pesquisa qualitativa realizada com 16 familiares de crianças com doença do refluxo gastroesofágico. Foi utilizada uma questão norteadora, as entrevistas foram gravadas e transcritas. Utilizou-se a técnica de análise de conteúdo.Resultados Emergiram oito categorias relacionadas às dificuldades enfrentadas pelos pais: v...

  17. Bis(4-methylpiperidinium hexachloridostannate(IV

    Directory of Open Access Journals (Sweden)

    Madeleine Helliwell

    2008-04-01

    Full Text Available The crystal structure of the title compound, (C6H14N2[SnCl6], is built of 4-methylpiperidinium cations, occupying special positions on the mirror plane, and hexachloridostannate(IV anions on a special position of 2/m symmetry. The ions are linked via N—H...Cl hydrogen bonds into chains running along the b axis.

  18. The carbonate complexation of plutonium(IV)

    International Nuclear Information System (INIS)

    Hobart, D.E.; Palmer, P.D.; Newton, T.W.

    1985-01-01

    Plutonium(IV) carbonate complexes are expected to be of particular importance in typical groundwaters at the Yucca Mountain site of the candidate nuclear waste repository being studied by the Nevada Nuclear Waste Storage Investigations Project. The chemistry of these complexes is also important in the areas of nuclear fuel reprocessing and purification, actinide separations, and environmental studies. This report describes initial experiments performed to determine the identity and equilibrium quotients of plutonium(IV) carbonate complexes. These experiments were performed at pH values between 7.2 and 9.6 using a spectrophotometric method. In addition, a brief review of the published literature on Pu(IV) carbonate complexes is presented. Since Pu(IV) exhibits low solubility in the near-neutral pH range, a complex-competition reaction where citrate ligands compete with carbonate ions for the plutonium will be employed. This will permit us to study the pure carbonate system; study the mixed carbonate/citrate system, and confirm and extend the literature work on the pure citrate system. The current experiments have demonstrated the existence of at least three distinct species in the pH region studied. This work will continue in the extended study of the pure citrate system, followed by the investigation of the citrate/carbonate complex/competition reaction. 9 refs., 4 figs., 2 tabs

  19. Painlevé IV coherent states

    International Nuclear Information System (INIS)

    Bermudez, David; Contreras-Astorga, Alonso; Fernández C, David J.

    2014-01-01

    A simple way to find solutions of the Painlevé IV equation is by identifying Hamiltonian systems with third-order differential ladder operators. Some of these systems can be obtained by applying supersymmetric quantum mechanics (SUSY QM) to the harmonic oscillator. In this work, we will construct families of coherent states for such subset of SUSY partner Hamiltonians which are connected with the Painlevé IV equation. First, these coherent states are built up as eigenstates of the annihilation operator, then as displaced versions of the extremal states, both involving the related third-order ladder operators, and finally as extremal states which are also displaced but now using the so called linearized ladder operators. To each SUSY partner Hamiltonian corresponds two families of coherent states: one inside the infinite subspace associated with the isospectral part of the spectrum and another one in the finite subspace generated by the states created through the SUSY technique. - Highlights: • We use SUSY QM to obtain Hamiltonians with third-order differential ladder operators. • We show that these systems are related with the Painlevé IV equation. • We apply different definitions of coherent states to these Hamiltonians using the third-order ladder operators and some linearized ones. • We construct families of coherent states for such systems, which we called Painlevé IV coherent states

  20. Resonance transition array of Yb IV

    International Nuclear Information System (INIS)

    Kaufman, V.; Sugar, J.

    1976-01-01

    Nineteen pairs of lines in the wavelength range of 800--1300 A were identified as transitions to the two levels of the ground term of Yb IV, 4f 13 2 F. The 2 F 5 / 2 -- 2 F 7 / 2 interval is 10 214.0 cm -1 with an rms deviation of 0.4 cm -1

  1. Industrial Waste Landfill IV upgrade package

    International Nuclear Information System (INIS)

    1994-01-01

    The Y-12 Plant, K-25 Site, and ORNL are managed by DOE's Operating Contractor (OC), Martin Marietta Energy Systems, Inc. (Energy Systems) for DOE. Operation associated with the facilities by the Operating Contractor and subcontractors, DOE contractors and the DOE Federal Building result in the generation of industrial solid wastes as well as construction/demolition wastes. Due to the waste streams mentioned, the Y-12 Industrial Waste Landfill IV (IWLF-IV) was developed for the disposal of solid industrial waste in accordance to Rule 1200-1-7, Regulations Governing Solid Waste Processing and Disposal in Tennessee. This revised operating document is a part of a request for modification to the existing Y-12 IWLF-IV to comply with revised regulation (Rule Chapters 1200-1-7-.01 through 1200-1-7-.08) in order to provide future disposal space for the ORR, Subcontractors, and the DOE Federal Building. This revised operating manual also reflects approved modifications that have been made over the years since the original landfill permit approval. The drawings referred to in this manual are included in Drawings section of the package. IWLF-IV is a Tennessee Department of Environmental and Conservation/Division of Solid Waste Management (TDEC/DSWM) Class 11 disposal unit

  2. IV-DSA of vertigo patients

    International Nuclear Information System (INIS)

    Watanabe, Hiromi; Ito, Masatoshi; Takita, Kimio; Matsuzawa, Taiju.

    1988-01-01

    With IV-DSA(Intra-Venous Digital Subtraction Angiography), we examined the relations between vertigo or dizziness and asymmetries of cervical vertebral arteries. In this time, as the asymmetries we chose next three; hemi-stenosis, hemi-occulusion and hemi-strong tortuosity. In the appearance of the asymmetries, there was no differance between those who complain vertigo or dizziness and others. (author)

  3. 21 CFR 1308.14 - Schedule IV.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 9 2010-04-01 2010-04-01 false Schedule IV. 1308.14 Section 1308.14 Food and... isomers is possible: (1) Fenfluramine 1670 (e) Stimulants. Unless specifically excepted or unless listed... the following substances having a stimulant effect on the central nervous system, including its salts...

  4. Painlevé IV coherent states

    Energy Technology Data Exchange (ETDEWEB)

    Bermudez, David, E-mail: david.bermudez@weizmann.ac.il [Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100 (Israel); Departamento de Física, Cinvestav, A.P. 14-740, 07000 México D.F. (Mexico); Contreras-Astorga, Alonso, E-mail: aloncont@iun.edu [Department of Mathematics and Actuarial Science, Indiana University Northwest, 3400 Broadway, Gary IN 46408 (United States); Departamento de Física, Cinvestav, A.P. 14-740, 07000 México D.F. (Mexico); Fernández C, David J., E-mail: david@fis.cinvestav.mx [Departamento de Física, Cinvestav, A.P. 14-740, 07000 México D.F. (Mexico)

    2014-11-15

    A simple way to find solutions of the Painlevé IV equation is by identifying Hamiltonian systems with third-order differential ladder operators. Some of these systems can be obtained by applying supersymmetric quantum mechanics (SUSY QM) to the harmonic oscillator. In this work, we will construct families of coherent states for such subset of SUSY partner Hamiltonians which are connected with the Painlevé IV equation. First, these coherent states are built up as eigenstates of the annihilation operator, then as displaced versions of the extremal states, both involving the related third-order ladder operators, and finally as extremal states which are also displaced but now using the so called linearized ladder operators. To each SUSY partner Hamiltonian corresponds two families of coherent states: one inside the infinite subspace associated with the isospectral part of the spectrum and another one in the finite subspace generated by the states created through the SUSY technique. - Highlights: • We use SUSY QM to obtain Hamiltonians with third-order differential ladder operators. • We show that these systems are related with the Painlevé IV equation. • We apply different definitions of coherent states to these Hamiltonians using the third-order ladder operators and some linearized ones. • We construct families of coherent states for such systems, which we called Painlevé IV coherent states.

  5. National Coastal Condition Report IV (2012)

    Science.gov (United States)

    The NCCR IV data shows an overall condition score of 3.0 for the nation’s coastal waters; although this score has improved substantially since 1990, the overall condition of the nation’s coastal resources continues to be rated fair.

  6. IVS: Current Status and Future Plans

    Science.gov (United States)

    Behrend, D.; Nothnagel, A.; Petrachenko, W. T.; Tuccari, G.

    2016-12-01

    The International VLBI Service for Geodesy and Astrometry (IVS) is a globally operating service that coordinates and performs Very Long Baseline Interferometry (VLBI) activities through its constituent components. The VLBI activities are associated with the creation, provision, dissemination, and archiving of relevant VLBI data and products. The products mostly pertain to the determination of the celestial and terrestrial reference frames, the Earth orientation parameters (EOP), atmospheric parameters as well as other ancillary parameters. The IVS observational network currently consists of about 40 radio telescopes worldwide. Subsets of these telescopes (8-12 stations) participate in 24-hour observing sessions that are run several times per week and in 1-hour intensive sessions for UT1 determination every day. The current VLBI network was developed mainly in the 1970s and 1980s. A number of factors, including aging infrastructure and demanding new scientific requirements, started to challenge its future sustainability and relevance. In response, the IVS and other groups developed and started implementing the next generation VLBI system, called VGOS (VLBI Global Observing System), at existing and new sites. The VGOS network is expected to reach maturity in the early 2020s. We describe the current status, progress, and anticipated prospects of geodetic/astrometric VLBI and the IVS.

  7. Scylla IV-P theta pinch

    International Nuclear Information System (INIS)

    Bailey, A.G.; Chandler, G.I.; Ekdahl, C.A. Jr.; Lillberg, J.W.; Machalek, M.D.; Seibel, F.T.

    1976-01-01

    Scylla IV-P is a flexible, linear theta pinch designed to investigate high-density linear concepts, end-stoppering, alternate heating methods, and plasma injection techniques relevant to a pure fusion reactor and/or a fusion-fission hybrid system. The construction and experimental arrangement of the device are briefly described

  8. Gen IV Materials Handbook Implementation Plan

    International Nuclear Information System (INIS)

    Rittenhouse, P.; Ren, W.

    2005-01-01

    A Gen IV Materials Handbook is being developed to provide an authoritative single source of highly qualified structural materials information and materials properties data for use in design and analyses of all Generation IV Reactor Systems. The Handbook will be responsive to the needs expressed by all of the principal government, national laboratory, and private company stakeholders of Gen IV Reactor Systems. The Gen IV Materials Handbook Implementation Plan provided here addresses the purpose, rationale, attributes, and benefits of the Handbook and will detail its content, format, quality assurance, applicability, and access. Structural materials, both metallic and ceramic, for all Gen IV reactor types currently supported by the Department of Energy (DOE) will be included in the Gen IV Materials Handbook. However, initial emphasis will be on materials for the Very High Temperature Reactor (VHTR). Descriptive information (e.g., chemical composition and applicable technical specifications and codes) will be provided for each material along with an extensive presentation of mechanical and physical property data including consideration of temperature, irradiation, environment, etc. effects on properties. Access to the Gen IV Materials Handbook will be internet-based with appropriate levels of control. Information and data in the Handbook will be configured to allow search by material classes, specific materials, specific information or property class, specific property, data parameters, and individual data points identified with materials parameters, test conditions, and data source. Details on all of these as well as proposed applicability and consideration of data quality classes are provided in the Implementation Plan. Website development for the Handbook is divided into six phases including (1) detailed product analysis and specification, (2) simulation and design, (3) implementation and testing, (4) product release, (5) project/product evaluation, and (6) product

  9. Coordination and solvent extraction behaviour of oxozirconium(IV), thorium(IV) and dioxouranium(VI)

    International Nuclear Information System (INIS)

    Dash, K.C.

    1989-01-01

    The systematic liquid-liquid extraction behaviour of oxozirconium (IV), thorium(IV) and dioxouranium(VI) have been investigated using a number of synthesised and commercial chelating extractants. The synergism or antagonism for these processes in presence of neutral donor ligands have also been identified and the conditions for separation and isolation of pure individual metal ions have been established. The coordination behaviour of oxozirconium(IV), thorium(IV) and dioxouranium(VI) with a large number of mono- and polydentate ligands have been studied. With oxozirconium(IV), invariably always a cyclic, tetranuclear species is obtained, derived from the tetrameric structure of the parent ZrOCl 2 .8H 2 O which is actually (Zr 4 (OH) 8 (H 2 O) 16 )Cl 8 .12H 2 O. No simple, monomeric oxozirconium(IV) complex was obtained. Uranium(VI) and thorium(IV) form a wide variety of complexes of higher coordination numbers and several bi- and trinuclear complexes were also characterised where the two adjacent metal centres are joined to each other by a double hydroxo-bridge. (author). 69 refs., 3 figs., 4 tabs

  10. Ehlers-Danlos syndrome type IV

    Directory of Open Access Journals (Sweden)

    Germain Dominique P

    2007-07-01

    Full Text Available Abstract Ehlers-Danlos syndrome type IV, the vascular type of Ehlers-Danlos syndromes (EDS, is an inherited connective tissue disorder defined by characteristic facial features (acrogeria in most patients, translucent skin with highly visible subcutaneous vessels on the trunk and lower back, easy bruising, and severe arterial, digestive and uterine complications, which are rarely, if at all, observed in the other forms of EDS. The estimated prevalence for all EDS varies between 1/10,000 and 1/25,000, EDS type IV representing approximately 5 to 10% of cases. The vascular complications may affect all anatomical areas, with a tendency toward arteries of large and medium diameter. Dissections of the vertebral arteries and the carotids in their extra- and intra-cranial segments (carotid-cavernous fistulae are typical. There is a high risk of recurrent colonic perforations. Pregnancy increases the likelihood of a uterine or vascular rupture. EDS type IV is inherited as an autosomal dominant trait that is caused by mutations in the COL3A1 gene coding for type III procollagen. Diagnosis is based on clinical signs, non-invasive imaging, and the identification of a mutation of the COL3A1 gene. In childhood, coagulation disorders and Silverman's syndrome are the main differential diagnoses; in adulthood, the differential diagnosis includes other Ehlers-Danlos syndromes, Marfan syndrome and Loeys-Dietz syndrome. Prenatal diagnosis can be considered in families where the mutation is known. Choriocentesis or amniocentesis, however, may entail risk for the pregnant woman. In the absence of specific treatment for EDS type IV, medical intervention should be focused on symptomatic treatment and prophylactic measures. Arterial, digestive or uterine complications require immediate hospitalisation, observation in an intensive care unit. Invasive imaging techniques are contraindicated. Conservative approach is usually recommended when caring for a vascular

  11. Ehlers-Danlos syndrome type IV

    Science.gov (United States)

    Germain, Dominique P

    2007-01-01

    Ehlers-Danlos syndrome type IV, the vascular type of Ehlers-Danlos syndromes (EDS), is an inherited connective tissue disorder defined by characteristic facial features (acrogeria) in most patients, translucent skin with highly visible subcutaneous vessels on the trunk and lower back, easy bruising, and severe arterial, digestive and uterine complications, which are rarely, if at all, observed in the other forms of EDS. The estimated prevalence for all EDS varies between 1/10,000 and 1/25,000, EDS type IV representing approximately 5 to 10% of cases. The vascular complications may affect all anatomical areas, with a tendency toward arteries of large and medium diameter. Dissections of the vertebral arteries and the carotids in their extra- and intra-cranial segments (carotid-cavernous fistulae) are typical. There is a high risk of recurrent colonic perforations. Pregnancy increases the likelihood of a uterine or vascular rupture. EDS type IV is inherited as an autosomal dominant trait that is caused by mutations in the COL3A1 gene coding for type III procollagen. Diagnosis is based on clinical signs, non-invasive imaging, and the identification of a mutation of the COL3A1 gene. In childhood, coagulation disorders and Silverman's syndrome are the main differential diagnoses; in adulthood, the differential diagnosis includes other Ehlers-Danlos syndromes, Marfan syndrome and Loeys-Dietz syndrome. Prenatal diagnosis can be considered in families where the mutation is known. Choriocentesis or amniocentesis, however, may entail risk for the pregnant woman. In the absence of specific treatment for EDS type IV, medical intervention should be focused on symptomatic treatment and prophylactic measures. Arterial, digestive or uterine complications require immediate hospitalisation, observation in an intensive care unit. Invasive imaging techniques are contraindicated. Conservative approach is usually recommended when caring for a vascular complication in a patient suffering

  12. Identification of novel dipeptidyl peptidase IV (DPP-IV) inhibitory peptides in camel milk protein hydrolysates.

    Science.gov (United States)

    Nongonierma, Alice B; Paolella, Sara; Mudgil, Priti; Maqsood, Sajid; FitzGerald, Richard J

    2018-04-01

    Nine novel dipeptidyl peptidase IV (DPP-IV) inhibitory peptides (FLQY, FQLGASPY, ILDKEGIDY, ILELA, LLQLEAIR, LPVP, LQALHQGQIV, MPVQA and SPVVPF) were identified in camel milk proteins hydrolysed with trypsin. This was achieved using a sequential approach combining liquid chromatography tandem mass spectrometry (LC-MS/MS), qualitative/quantitative structure activity relationship (QSAR) and confirmatory studies with synthetic peptides. The most potent camel milk protein-derived DPP-IV inhibitory peptides, LPVP and MPVQA, had DPP-IV half maximal inhibitory concentrations (IC 50 ) of 87.0 ± 3.2 and 93.3 ± 8.0 µM, respectively. DPP-IV inhibitory peptide sequences identified within camel and bovine milk protein hydrolysates generated under the same hydrolysis conditions differ. This was linked to differences in enzyme selectivity for peptide bond cleavage of camel and bovine milk proteins as well as dissimilarities in their amino acid sequences. Camel milk proteins contain novel DPP-IV inhibitory peptides which may play a role in the regulation of glycaemia in humans. Copyright © 2017 Elsevier Ltd. All rights reserved.

  13. As Competências Gerenciais Desenvolvidas pelos Secretários Executivos

    Directory of Open Access Journals (Sweden)

    Conceição de Maria Pinheiro Barros

    2013-11-01

    Full Text Available O profissional de Secretariado Executivo está diretamente envolvido nos processos de gestão da empresa, pois sua atuação se dá em cargos de assessoria a diretores, gerentes, supervisores, assim como em cargos específicos de gestão, como encarregado administrativo, gerente, responsável pelo departamento, coordenador do setor, consultor e tantas outras nomenclaturas existentes. Este trabalho tem como objetivo geral investigar as competências gerenciais na atuação do profissional de Secretariado Executivo. Para o alcance dos objetivos propostos foi realizada uma pesquisa qualitativa, a partir de um levantamento bibliográfico e uma pesquisa de campo. Após a análise dos dados percebeu-se que as competências gerenciais são utilizadas em Secretariado Executivo nas suas diversas responsabilidades, contribuindo para o alcance de objetivos e metas organizacionais por meio do desenvolvimento de atividades que envolvem o gerenciamento, participação no planejamento, na condução e estímulo às pessoas e ao controle. Esse profissional vem superando grandes desafios, ampliando suas competências e seu campo de inserção e contribuindo efetivamente para o bom desempenho organizacional.DOI:10.7769/gesec.v4i2.131

  14. Métodos de Avaliação Utilizados pelos Profissionais de Investimento

    Directory of Open Access Journals (Sweden)

    Dione Olesczuk Soutes

    2009-01-01

    Full Text Available A literatura especializada apresenta vários modelos para o processo de avaliação de empresas, sendo alguns de grande complexidade técnica. Para a aplicação prática, estes modelos possuem variações em suas formas de cálculo. Este artigo tem por objetivo caracterizar os principais métodos presentados pela literatura e identificar quais destes são os de maior utilização, especificamente para avaliação do valor da ação das empresas. A técnica de pesquisa utilizada foi o levantamento de dados. A coleta de dados foi feita por meio de questionário encaminhado aos profissionais de investimentos associados à APIMEC. A análise dos dados é descritiva, pois objetiva a caracterização da amostra pesquisada quanto à utilização dos métodos de avaliação. Os resultados apontam para a maior utilização e confiabilidade dos modelos baseados no fluxo de caixa descontado, porém os modelos de avaliação relativa, ou de múltiplos, também são bastante utilizados pelos profissionais pesquisados.

  15. Vulnerabilidades presentes no percurso vivenciado pelos pacientes com HIV/AIDS em falha terapêutica

    Directory of Open Access Journals (Sweden)

    Petra Kelly Rabelo de Sousa

    2013-04-01

    Full Text Available Um grande avanço no tratamento da AIDS deu-se com o surgimento da terapia antiretroviral. Entretanto, diversas vulnerabilidades podem estar presentes no percurso vivenciado pelos pacientes durante o tratamento. Objetivou-se analisar as vulnerabilidades dos pacientes com HIV/AIDS em falha terapêutica. Estudo qualitativo realizado com sete usuários com AIDS considerados em falha terapêutica, em uma Unidade de Serviço Ambulatorial Especializado em HIV/AIDS, em Fortaleza-CE. Para interpretação dos dados, utilizou-se uma técnica de análise de conteúdo. Nos discursos, percebeu-se que os depoentes enfrentavam conflitos na família e, no ambiente de trabalho, dificuldades de relacionamento com as pessoas e estigma. Observou-se que os pacientes haviam vivenciado diversas situações que os tornaram mais suscetíveis à infecção por HIV e ao adoecimento.

  16. Opção pelo curso de Medicina em Angola: o caso da Universidade Agostinho Neto

    Directory of Open Access Journals (Sweden)

    Maria Fernanda Afonso Dias Monteiro

    Full Text Available O presente trabalho pretende: (i identificar os motivos que conduzem os jovens a optar pelo curso de Medicina na Faculdade de Medicina da Universidade Agostinho Neto (FMUAN; (ii identificar como é percebida a profissão médica; (iii determinar se existe influência das características sociodemográficas sobre os fatores identificados como determinantes que os orientam para a pretensão de ser médico. O estudo contou com uma amostra de 1.815 candidatos (96,2%. Os dados recolhidos correspondem a uma amostra obtida por intermédio de inquéritos de opinião. Os candidatos identificaram como principais razões de opção pelo curso de Medicina as seguintes: Altruísmo (mediana = 87,5; Vocação (mediana = 81,3; Influência Familiar (mediana = 75,0; Prestígio Social (mediana = 75,0; Interesse Científico (mediana = 68,7; Pessoas na Família Exercendo a Profissão (mediana = 62,5; Mercado de Trabalho (mediana = 50,0. Não consideraram como razões de opção pelo curso: Benefício Econômico (mediana = 45,0, Sucesso (mediana = 43,8 e os Problemas de Saúde na Família (mediana = 37,5. Podemos concluir que os candidatos ao curso de Medicina se distinguem pela dedicação aos outros e pelo compromisso com as pessoas, constituindo a Vocação e o Altruísmo as principais forças impulsionadoras da opção pelo curso.

  17. DSM-IV hypochondriasis in primary care.

    Science.gov (United States)

    Escobar, J I; Gara, M; Waitzkin, H; Silver, R C; Holman, A; Compton, W

    1998-05-01

    The object of this study was to assess the prevalence and correlates of the DSM-IV diagnosis of hypochondriasis in a primary care setting. A large sample (N = 1456) of primary care users was given a structured interview to make diagnoses of mood, anxiety, and somatoform disorders and estimate levels of disability. The prevalence of hypochondriasis (DSM-IV) was about 3%. Patients with this disorder had higher levels of medically unexplained symptoms (abridged somatization) and were more impaired in their physical functioning than patients without the disorder. Of the various psychopathologies examined, major depressive syndromes were the most frequent among patients with hypochondriasis. Interestingly, unlike somatization disorder, hypochondriasis was not related to any demographic factor. Hypochondriasis is a relatively rare condition in primary care that is largely separable from somatization disorder but seems closely intertwined with the more severe depressive syndromes.

  18. Efeitos cardiorrespiratórios da buprenorfina em cães anestesiados pelo desfluorano Cardiorespiratory effects of buprenorphine in dogs anesthetized with desflurane

    Directory of Open Access Journals (Sweden)

    Almir Pereira de Souza

    2005-12-01

    Full Text Available Objetivou-se, com este estudo, avaliar os efeitos da buprenorfina sobre variáveis cardiovasculares e respiratórias em cães durante anestesia com desfluorano. Para tanto, foram utilizados 20 cães adultos, distribuídos em dois grupos (GB e GC. A anestesia foi induzida com propofol (8mg kg-1 IV e em seguida os animais foram intubados com sonda de Magill, a qual foi conectada ao aparelho de anestesia para administração de desfluorano (1,5 CAM. Após 30 minutos, foi aplicado no GB buprenorfina (0,02mg kg-1 e no GC solução de NaCl à 0,9% (0,05ml kg-1. Avaliaram-se: freqüências cardíaca e respiratória (FC e ¦; pressões arteriais sistólica, diastólica e média (PAS, PAD e PAM; débito cardíaco (DC; pressão venosa central (PVC; e as variáveis hemogasométricas pH, PaCO2, PaO2, HCO3, SatO2 e DB. As colheitas dos dados foram feitas aos 30 minutos após o início da administração do desfluorano (MO, 15 minutos após a administração do opióide ou placebo (M15, e a cada 15 minutos após Ml5 (M30, M45, M60 e M75. A avaliação estatística dos dados foi efetuada por meio de Análise de Perfil (P¦ e o pH tiveram reduções no GB, enquanto a PaCO2 esteve aumentada. Concluiu-se que a inclusão da buprenorfina durante anestesia inalatória pelo desfluorano determina discretas alterações cardiovasculares, bem-como potencializa a hipoventilação promovida pelo desfluorano, com a manifestação de hipercapnia, o que não contra-indica o seu uso em pacientes estáveis.The aim of this study was to evaluate the effects of buprenorphine on cardiovascular and respiratory variables in dogs anesthetized with desflurane. Twenty adult healthy male and female mongrel dogs were randomly distributed in two groups of ten animals each (GB and GC. The anesthetic induction was done using propofol (8mg kg-1, IV, and immediately, the dogs were intubated and submited to desflurane anesthesia administrated at 1.5 MAC. After 30 minutes of induction, animals

  19. Generation-IV nuclear reactors, SFR concept

    International Nuclear Information System (INIS)

    Dufour, P.

    2010-01-01

    In this presentation author deals with development of sodium-cooled fast reactors and lead-cooled fast reactors. He concluded that: - SFR is a proved concept that has never achieved industrial deployment; - The GEN IV objectives need to reconsider the design of both the core and the reactor design : innovations are being analysed; Future design will benefit from considerable feedback of design, licensing, construction and operation of PX, SPX, etc.

  20. Generation IV nuclear plant design strategies

    International Nuclear Information System (INIS)

    Altin, V.

    2007-01-01

    In this presentation Generation IV nuclear reactor design criteria are examined under the light of known nuclear properties of fissile and fertile nuclei. Their conflicting nature is elucidated along with the resulting inevitability of a multitude of designs. The designs selected as candidates for further development are evaluated with respect to their potential to serve the different design criteria, thereby revealing their more difficult aspects of realization and the strong research challenges lying ahead

  1. Genome Sequencing and Analysis Conference IV

    Energy Technology Data Exchange (ETDEWEB)

    1993-12-31

    J. Craig Venter and C. Thomas Caskey co-chaired Genome Sequencing and Analysis Conference IV held at Hilton Head, South Carolina from September 26--30, 1992. Venter opened the conference by noting that approximately 400 researchers from 16 nations were present four times as many participants as at Genome Sequencing Conference I in 1989. Venter also introduced the Data Fair, a new component of the conference allowing exchange and on-site computer analysis of unpublished sequence data.

  2. United Arab Emirates; 2013 Article IV Consultation

    OpenAIRE

    International Monetary Fund

    2013-01-01

    This staff report on United Arab Emirates 2013 Article IV Consultation highlights economic policies and development. Against a backdrop of political stability, confidence has further increased, tourism has been firm, demand from expatriates from the broader region has increased, and capital inflows have strengthened amid high global liquidity. The real estate sector, which had been impaired since the 2009 crisis, has stabilized in Abu Dhabi and has started to recover in Dubai. Dubai aims to b...

  3. Dipyridinium tribromidochloridobis(4-chlorophenylstannate(IV

    Directory of Open Access Journals (Sweden)

    Kong Mun Lo

    2009-06-01

    Full Text Available The tin atom in the substituted ammonium stannate(IV, (C5H6N2[SnBr3(C6H4Cl2Cl], lies on a center of symmetry in a distorted octahedral coordination geometry. Each independent halogen site is occupied by bromine and chlorine anions in an approximate 3:1 ratio. The pyridinium cation forms a hydrogen bond to only one of the halogen atoms.

  4. Structure of tetrakis(salicylaldehydato)thorium(IV)

    Energy Technology Data Exchange (ETDEWEB)

    Hill, R J; Rickard, C E.F. [Auckland Univ. (New Zealand). Dept. of Chemistry

    1977-01-01

    The structure of tetrakis(salicylaldehydato)thorium(IV) has been determined by single crystal X-ray crystallography. The crystals are tetragonal, a = 10.214, b = 23.744 A, space group P4/sub 1/. The molecules are eight coordinate, the coordination polyhedron being a dodecahedron with approximate Dsub(2d) symmetry. The dodecahedral A sites are occupied by the aldehydic oxygens and the phenolic oxygens occupy the B sites.

  5. IVS contribution to the next ITRF

    Science.gov (United States)

    Bachmann, Sabine; Messerschmitt, Linda; Thaller, Daniela

    2015-04-01

    Generating the contribution of the International VLBI Service (IVS) to the next ITRF (ITRF2013 or ITRF2014) was the main task of the IVS Combination Center at the Federal Agency for Cartography and Geodesy (BKG, Germany) in 2014. Starting with the ITRF2005, the IVS contribution to the ITRF is an intra-technique combined solution using multiple individual contributions from different institutions. For the upcoming ITRF ten international institutions submitted data files for a combined solution. The data files contain 24h VLBI sessions from the late 1970s until the end of 2014 in SINEX file format containing datum free normal equations with station coordinates and Earth Orientation Parameters (EOP). All contributions have to meet the IVS standards for ITRF contribution in order to guarantee a consistent combined solution. In the course of the generation of the intra-technique combined solution, station coordinate time series for each station as well as a Terrestrial Reference Frame based on the contributed VLBI data (VTRF) were generated and analyzed. Preliminary results using data until the end of 2013 show a scaling factor of -0.47 ppb resulting from a 7-parameter Helmert transformation of the VTRF w.r.t. ITRF2008, which is comparable to the scaling factor that was determined in the precedent ITRF generation. An internal comparison of the EOPs between the combined solution and the individual contributions as well as external comparisons of the EOP series were carried out in order to assure a consistent quality of the EOPs. The data analyses, the combination procedure and results of the combined solution for station coordinates and EOP will be presented.

  6. Sandia Pulse Reactor-IV Project

    International Nuclear Information System (INIS)

    Reuscher, J.A.

    1983-01-01

    Sandia National Laboratories has developed, designed and operated fast burst reactors for over 20 years. These reactors have been used for a variety of radiation effects programs. During this period, programs have required larger irradiation volumes primarily to expose complex electronic systems to postulated threat environments. As experiment volumes increased, a new reactor was built so that these components could be tested. The Sandia Pulse Reactor-IV is a logical evolution of the two decades of fast burst reactor development at Sandia

  7. Plutonium(IV) hydrous polymer chemistry

    International Nuclear Information System (INIS)

    Toth, L.M.; Dodson, K.E.

    1985-01-01

    The hydrous polymer chemistry of Pu(IV) in aqueous nitric acid solutions has been a subject of considerable interest for several years. This interest stems mainly from the fact that most nuclear fuel reprocessing schemes based on the Purex process can be hampered by the occurrence of polymer. As a result, an understanding and control of the parameters that affect polymer formation during reprocessing are studied. 2 refs

  8. Ionizing radiation risk assessment, BEIR IV

    International Nuclear Information System (INIS)

    1991-10-01

    This report of the Subpanel discusses the potential impact on Federal agencies and indicates individual risk factors that could be used by them in risk assessment. The approach used in this CIRRPC report was to consider the risk factors presented in BEIR IV for each radionuclide (or group radioelements) and to make some judgments regarding their validity and/or the uncertainties involved. The coverage of Radon-222 and its progeny dominated the BEIR IV report and this Subpanel felt is was proper to devote more attention to this radionuclide family. This risk factor presented in BEIR IV for radon is 350 cancer deaths per million person-working level months (WLM) of exposure for a lifetime. There is a range of opinions on the conversion from WLM to absorbed dose. As discussed in the text, the use of the WLM concept makes it difficult or infeasible to compare the risk factor for radon with that of other radionuclides which are based on organ dose. This report also includes a discussion of certain fundamental scientific and operational issues that may have decisive effect upon risk factor selection. These adjunct items are dealt with under separate headings and include discussions of threshold dose considerations, extrapolation to low doses, and age at exposure

  9. Revised and extended analysis of Br IV

    International Nuclear Information System (INIS)

    Riyaz, A.; Rahimullah, K.; Tauheed, A.

    2014-01-01

    The spectrum of three-times ionized bromine Br IV has been studied in the 319–2350 Å wavelength region. The spectrum was recorded on a 3-m normal incidence vacuum spectrograph at the St. Francis Xavier University, Antigonish (Canada) and 6.65-m grazing incidence spectrograph at the Zeeman laboratory (Amsterdam). The light sources used were a triggered spark and sliding spark, respectively. The ground configuration of Br IV 3d 10 4s 2 4p 2 , the excited configurations 3d 10 4s4p 3 +3d 10 4s 2 4p (4d+5d+6d+5s+6s+7s) in the odd parity system and 3d 10 4s 2 4p (5p+4f+5f)+3d 10 4s4p 2 (4d+5s)+3d 10 4p 4 in the even parity system have been studied. Relativistic Hartree–Fock (HFR) and least squares fitted (LSF) parametric calculations were used to interpret the observed spectrum. 120 Levels of Br IV have now been established, 58 being new. Among 424 spectral lines, 277 are newly classified. The levels 4s4p 35 S 2 , 4s 2 4p4d 3 F 4 and 4p5p ( 3 P 0,1 , 3 D 1,2 , 3 S 1 ) are revised. We estimate the accuracy of our measured wavelength for sharp and unblended lines to be ±0.005 Å. The ionization limit is determined as 385,390±100 cm −1 (47.782±0.012 eV). -- Highlights: • The spectrum of Br was recorded on a 3-m spectrograph with triggered spark source. • Atomic transitions for Br IV were identified to established new energy levels. • CI calculations with relativistic corrections were made for theoretical predictions. • Weighted oscillator strength (gf) and transition probabilities (gA) were calculated. • Ionization potential of Br IV was determined experimentally

  10. Tratamento das formas severas de miastenia pelo ACTH por via intravenosa

    Directory of Open Access Journals (Sweden)

    José Lamartine de Assis

    1960-12-01

    Full Text Available O autor inicia o trabalho referindo as bases bioquímicas, fisiopatológicas e anátomo-patológicas do tratamento da miastenia pelo ACTH. Na miastenia grave há diminuição da síntese da acetilcolina no organismo, atuando o ACTH no sentido de aumentar esta síntese seja diretamente, por ativação da colinacetilase, seja indiretamente, mediante a redução da massa dos tecidos linfóides, em particular do timo, responsáveis pela elaboração de substâncias que diminuem a síntese da acetilcolina. O autor empregou o ACTH "Armour" e a Cortrofina "Organon", nas doses de 2,5 a 25 mg, sempre pela via intravenosa, diluídos em 250 a 1.000 ml de soluto glicosado a 5%, administrado gota a gôta, na velocidade média de 20 gôtas por minuto, durante 8 horas. Como medicação associada foi administrada a Prostigmina a todos os pacientes, substituída, depois, em alguns casos, pelo Mestinon ou pela Mytelaze. Como adjuvantes foram empregados o cloreto de potássio (2 a 8 g por dia e o sulfato de efedrina (25 mg 3 vêzes ao dia. Os pacientes foram mantidos em regime hiperprotéico e acloretado, sendo tomados todos os cuidados inerentes ao uso do ACTH. Foram estudados 10 pacientes portadores de miastenia com sintomatologia acentuada (8 casos e média (2 casos. Todos os doentes vinham sendo tratados com drogas anticolinesterásicas em doses adequadas (Prostigmina, Mestinon, Mytelaze e a sua sintomatologia respondia cada vez menos a esta terapêutica. Em alguns casos haviam sido tentados outros tratamentos (timectomia, denervação do seio carotídeo, irradiação da região tímica sem resultado. É de notar que as remissões espontâneas neste grupo de enfermos foram excepcionais e de curta duração. A evolução foi acompanhada do ponto de vista clínico, com a sintomatologia classificada como muito acentuada, acentuada, média e leve. Em todos os casos houve remissão completa ou quase completa da sintomatologia após dosagens variáveis de ACTH; no

  11. Morbidade febril puerperal em pacientes infectadas pelo HIV Puerperal morbidity in HIV-positive women

    Directory of Open Access Journals (Sweden)

    Andrea De Marcos

    2003-04-01

    Full Text Available OBJETIVO: avaliar as taxas de morbidade febril puerperal em pacientes infectadas pelo HIV e sua correlação com a via de parto, duração do trabalho de parto, tempo de rotura de membranas, número de células CD4+ e carga viral do HIV periparto. MÉTODOS: foram incluídas 207 gestantes infectadas pelo HIV, com seguimento pré-natal e parto entre maio de 1997 e dezembro de 2001, sendo 32 submetidas a parto vaginal e 175 a cesárea. Do total de pacientes, 62,8% foram submetidas a cesárea eletiva. A idade média no grupo analisado foi de 27,4 anos, 25,6% eram nulíparas e 26% primíparas, com idade gestacional média de 37,8 semanas no momento do parto. A contagem média de células CD4+ foi de 481 células /mm³ e da carga viral do HIV de 49.100 cópias/mL, ambas no final da gestação. RESULTADOS: a morbidade febril puerperal ocorreu em 34 pacientes, sendo 33 pós-cesárea e 1 pós-parto vaginal. O tipo mais comum de intercorrência infecciosa pós-cesárea foi infecção de cicatriz cirúrgica (13% dos casos de infecção. Os fatores analisados, como duração do trabalho de parto, tempo de rotura de membranas, contagem de células CD4+ ou carga viral do HIV periparto, não interferiram na taxa de morbidade febril puerperal. CONCLUSÕES: A incidência de morbidade febril puerperal foi de 16,8%, sendo mais freqüente pós-cesárea (18,9% que pós-parto vaginal (3,1%. Os demais fatores não mostraram relação significativa com a taxa de morbidade febril puerperal.PURPOSE: the morbidity in HIV-positive patients due to puerperal fever was studied and correlated to the method and duration of labor, the duration of premature rupture of the membranes, CD4+ cell count and the viral load (VL at peridelivery. METHODS: a total of 207 HIV-positive women with prenatal examinations and deliveries between May 1997 and December 2001 were enrolled. Of these, 32 had natural childbirth and 175 had a cesarean section. Of the total of enrolled patients, 62

  12. Synthesis and evaluation of artificial antigens for astragaloside IV

    Directory of Open Access Journals (Sweden)

    Sheng-lan Yu

    Full Text Available The objective of this study was to produce artificial antigens for astragaloside IV that could be used to prepare antibodies against astragaloside IV screened in Radix astragali (Astragalus membranaceus (Fisch Bunge, Fabaceae and its preparations, using an indirect ELISA. Astragaloside IV was coupled to carrier proteins, bovine serum albumin and ovalbumin using the sodium periodate method and was then evaluated using SDS-PAGE, MALDI-TOF MS and animal immunizations. The coupling ratio of astragaloside IV to bovine serum albumin ratio was determined to be thirteen, and the indirect ELISA demonstrated that three groups of mice immunized with astragaloside IV-bovine serum albumin produced anti-astragaloside IV- bovine serum albumin-specific antibody, with a minimum serum titer of 1:9600. A method for synthesizing highly immunogenic astragaloside IV artificial antigens was successfully developed thus indicating its feasibility in the establishment of a fast immunoassay for astragaloside IV content determination in Radix astragali and its products.

  13. Biossíntese de vanilina pelo fungo Pycnoporus sanguineus MIP 95001

    Directory of Open Access Journals (Sweden)

    Sabrina Moro Villela Pacheco

    2013-06-01

    A vanilina (substância popularmente conhecida como aroma de baunilha é um dos compostos mais utilizados, principalmente pelas indústrias alimentícias e farmacêuticas. Esta substância pode ser obtida da orquídea Vanilla planifolia, porém, este é um processo oneroso e demorado. Por esse motivo, outros métodos para a obtenção da vanilina vêm sendo estudados. Dentro deste contexto, o objetivo deste trabalho foi estudar a biossíntese de vanilina por três isolados de Pycnoporus sanguineus através do uso de ácido vanílico como precursor. Os isolados foram cultivados em placas de Petri com meio ágar batata dextrose. Fragmentos destes cultivos foram inoculados em Erlenmeyers com meio líquido de caldo de batata e 0,3 g.L-1 de ácido vanílico. Os frascos permaneceram em shaker por oito dias a 28oC e 120 rpm. Foram retiradas diárias (0,8 mL.dia-1 para análise de vanilina, glicose, fenois totais, enzima lacase e proteínas totais. Os resultados revelaram que apenas a cepa MIP 95001 promoveu a biossíntese da vanilina. A maior concentração de vanilina foi detectada no quarto dia de cultivo (8,75 mg.dL-1. De forma geral, os resultados apresentados ilustram a possibilidade de biossintetizar a vanilina pelo Pycnoporus sanguineus (MIP 95001, evidenciando uma possível rota biotecnológica para a produção deste aroma.

  14. Produção de H²S pelos Clostridios anaerobios

    Directory of Open Access Journals (Sweden)

    Genesio Pacheco

    1940-01-01

    Full Text Available a A junção de extrato de figado-baço ao meio com bismuto se mostrou muito favorável no aumento da produção de H²S pelos clostridios anaerobios. b O bismuto ajuntado ao meio com extrato fígado-baço revelou maior sensibilidade ao H²S que o meio com ferro de Spray. c O emprego do meio extrato de fígado-baço-cistina, com indicador de carbonato de bismuto, revelou a produção abundante de H²S por todos os anaeróbios submetidos à prova de produção de H²S, o que não aconteceu com o emprego de ferro como indicador de reação. d Certas espécies de clostridios possuem capacidade sulfurigena mais precoce e intensa que outras. e Há variações individuais na precocidade da capacidade sulfurigena dos anaerobios.a The addiction of liver-spleen extract to the medium with bismuth seems to have favored greatly the increase of the production of H²S by anaerobic clostridia. b Bismuth added to the medium with liver-spleen extract showed greater sensibility to H²S than Spray’s medium with iron. c The employment of the liver-spleen-cystine medium, with bismuth carbonate as indicator, revealed an markedely production of the H²S by all the anaerobi submitted to the H²S production test, which was not the case when iron was used as indicator of the test. d Some species of clostridia have an earlier and more intense sulphidrigenous capacity than others. e There are individual variations among anaerobes in their capacity for early production of hydrogen sulphide.

  15. Utilização de nitrogênio de adubos verde e mineral pelo milho

    Directory of Open Access Journals (Sweden)

    W. B. Scivittaro

    2000-12-01

    Full Text Available Desenvolveu-se, na Estação Experimental de Piracicaba - Instituto Agronômico (SAA-SP, de março/94 a setembro/95, um experimento para avaliar o potencial de fornecimento de nitrogênio de adubos, verde e mineral, aplicados, de forma exclusiva ou combinada, na cultura do milho. Em uma primeira fase, produziram-se, simultaneamente, mucuna-preta sem marcação isotópica no campo e adubo verde marcado com 15N em casa de vegetação e, na segunda, a mucuna-preta foi incorporada ao solo, cultivando-se, em seguida, milho. O experimento constou dos seguintes tratamentos: testemunha, 15N-mucuna-preta (4,4 t ha-1 de matéria seca e 25,8 g kg-1 de N, 15N-uréia (50 e 100 kg ha-1 de N e as possíveis combinações de mucuna-preta e uréia marcadas ou não com 15N. Esses foram dispostos em delineamento experimental de blocos ao acaso com quatro repetições. O solo forneceu a maior parte do N acumulado nas plantas de milho, seguido, em ordem decrescente, pela uréia e mucuna-preta. A contribuição da uréia para o N acumulado nas plantas de milho foi proporcional à dose aplicada. O aproveitamento de nitrogênio da uréia pelo milho foi maior que o da mucuna-preta, sendo os melhores efeitos proporcionados pela combinação das duas fontes.

  16. GRAU DE SATISFAÇÃO PELO USO DO BALANCED SCORECARD NAS EMPRESAS GAÚCHAS

    Directory of Open Access Journals (Sweden)

    Margarete Luisa Arbugeri Menegotto

    2012-03-01

    Full Text Available ResumoA avaliação do desempenho de uma organização deixou de ser apenas observado pelos resultados financeiros, que isolados não são suficientes para garantir que suas estratégias e objetivos sejam alcançados de forma sistêmica. O acirramento da competição exige das empresas modelos estratégicos e práticas gerenciais que torne seu negócio cada vez mais sustentável em longo prazo. Observando às limitações dos sistemas contábeis tradicionais, Robert Kaplan e David Norton criaram em 1992 o balanced scorecard. Inicialmente o utilizaram como um modelo de avaliação e desempenho empresarial, com o passar do tempo aplicaram em empresas, o que proporcionou seu desenvolvimento para uma metodologia de gestão, de tal forma que traduza visão e estratégia empresarial, com objetivos interligados, medidos através de indicadores de desempenho. A proposta deste trabalho é apresentar o retorno do balanced scorecard como instrumento de gestão em empresas gaúchas. Os dados foram coletados entre setembro e novembro de 2008, por meio de questionários enviados por correio eletrônico. Os resultados obtidos evidenciam que o retorno obtido com a utilização do balanced scorecard é positivo, mas, apresenta algumas ressalvas, na sua implantação e no entendimento desta estratégia por parte dos colaboradores da empresa.Palavras-chave: balanced scorecard; estratégia, resultados.

  17. A cobertura da gripe A(H1N1 2009 pelo Fantástico

    Directory of Open Access Journals (Sweden)

    Flavia Natércia da Silva Medeiros

    Full Text Available A televisão é uma das principais fontes de informação sobre saúde tanto para o público geral quanto para os profissionais de saúde. O objetivo deste estudo é analisar a cobertura da gripe A(H1N1 2009 pelo Fantástico, conjugando uma análise de conteúdo com uma análise qualitativa sobre a forma como o programa apresentou a doença. Encontramos 16 matérias sobre o tema, veiculadas entre 26 de abril e 16 de agosto de 2009. A maioria teve como frame principal o alastramento da doença, mostrando dados epidemiológicos na forma de numeradores sem denominadores e falando em "alarde", "pânico" e "preocupação". As fontes mais frequentes foram representantes de governo e as vozes mais ouvidas foram cidadãos comuns. Medidas de contenção da gripe foram mencionadas com alta frequencia, com destaque para o uso de máscaras e a higienização das mãos. Também foram frequentes recomendações feitas por médicos e cerca de metade das matérias abordou os sintomas. Nossos resultados indicam que a cobertura do Fantástico optou por manter um tom de preocupação por meio das narrativas compostas e das imagens que acompanharam as matérias feitas sobre a gripe A(H1N1 2009.

  18. O MARKETING ORIENTADO PELO MERCADO [doi: 10.5329/RECADM.20050402010

    Directory of Open Access Journals (Sweden)

    Sandro Deretti

    2005-11-01

    Full Text Available Normal 0 21 false false false PT-BR X-NONE X-NONE MicrosoftInternetExplorer4 Resumo A economia globalizada determinou alterações profundas no processo estratégico das empresas, propiciando oportunidades e ameaças em todos os segmentos e exigindo produtos e serviços competitivos. Assim, diante deste cenário extremamente desafiador, a função marketing dentro das empresas assume maior importância no desenvolvimento de vantagens competitivas sustentáveis e na redução das incertezas. Muitos autores consideram que a orientação para o mercado seja a essência da filosofia empresarial que leva ao sucesso nesta luta pelos mercados porque investiga desejos e necessidades do consumidor. Este artigo faz uma contextualização dos principais trabalhos que colaboraram para a estruturação do conceito de marketing e da orientação para o mercado.   Palavras-chave: conceito de marketing; estratégia de marketing; orientação para o mercado.   Abstract The global economy determined deep changes in the companies’ strategic process, providing opportunities and threats in all segments and demanding competitive products and services. Therefore, the marketing function in the organizations takes greater importance in the development of sustainable competitive advantages. Many authors consider the market orientation as the essence of the business philosophy that leads to the success in the fight for markets because it investigates the consumer’s desires and necessities. This article analyzes the main works that contribute for construction of marketing concept and market orientation.   Key Words: marketing concept; marketing strategy; market orientation.

  19. ESCOAMENTO DA ÁGUA DA CHUVA PELO TRONCO DAS ÁRVORES EM UMA FLORESTA ESTACIONAL SEMIDECIDUAL

    Directory of Open Access Journals (Sweden)

    Alexandre Simões Lorenzon

    2015-06-01

    Full Text Available RESUMOEste trabalho foi desenvolvido na Estação de Pesquisas, Treinamento e Educação Ambiental Mata do Paraíso, situada no Município de Viçosa, na Zona da Mata de Minas Gerais, Brasil, e teve como objetivo avaliar o escoamento pelo tronco em um fragmento de Mata Atlântica, no período de agosto de 2009 a março de 2011. Para quantificar esse escoamento, foram demarcadas seis parcelas de 10 x 10 m, sendo em cada parcela adaptados coletores à base de poliuretano nos troncos das árvores com circunferência 15,0 cm. Um pluviômetro foi instalado em local aberto para quantificar a água diretamente da chuva. Além disso, realizou-se uma análise qualitativa dos indivíduos do escoamento pelo troco, avaliando a qualidade do fuste e da copa, posição no estrato da floresta e infestação de cipó. Em todo o período de análises, foram realizadas 75 medições. Nas parcelas de escoamento pelo tronco foram amostrados 126 indivíduos, distribuídos em 29 famílias e 59 espécies. A precipitação em aberto foi de 2.391,63 mm, e o escoamento pelo tronco somou 31,59 mm, ou 1,32% da precipitação em aberto. A espécie com maior escoamento pelo tronco foi a Euterpe edulis, com um volume médio de água escoado de 637,00 L. Das espécies com maior escoamento pelo tronco, 73,91% encontravam-se no estrato inferior da floresta, evidenciando que algumas espécies possuem algum tipo de adaptação morfológica para captação da água da chuva.

  20. A Si IV/O IV Electron Density Diagnostic for the Analysis of IRIS Solar Spectra

    Science.gov (United States)

    Young, P. R.; Keenan, F. P.; Milligan, R. O.; Peter, H.

    2018-04-01

    Solar spectra of ultraviolet bursts and flare ribbons from the Interface Region Imaging Spectrograph (IRIS) have suggested high electron densities of > {10}12 cm‑3 at transition region temperatures of 0.1 MK, based on large intensity ratios of Si IV λ1402.77 to O IV λ1401.16. In this work, a rare observation of the weak O IV λ1343.51 line is reported from an X-class flare that peaked at 21:41 UT on 2014 October 24. This line is used to develop a theoretical prediction of the Si IV λ1402.77 to O IV λ1401.16 ratio as a function of density that is recommended to be used in the high-density regime. The method makes use of new pressure-dependent ionization fractions that take account of the suppression of dielectronic recombination at high densities. It is applied to two sequences of flare kernel observations from the October 24 flare. The first shows densities that vary between 3× {10}12 and 3× {10}13 cm‑3 over a seven-minute period, while the second location shows stable density values of around 2× {10}12 cm‑3 over a three-minute period.

  1. Collagen type IV at the fetal-maternal interface

    OpenAIRE

    Oefner, C M; Sharkey, A; Gardner, L; Critchley, H; Oyen, M; Moffett, A

    2015-01-01

    Introduction Extracellular matrix proteins play a crucial role in influencing the invasion of trophoblast cells. However the role of collagens and collagen type IV (col-IV) in particular at the implantation site is not clear. Methods Immunohistochemistry was used to determine the distribution of collagen types I, III, IV and VI in endometrium and decidua during the menstrual cycle and the first trimester of pregnancy. Expression of col-IV alpha chains during the reproductive cycle ...

  2. Dipeptidyl peptidase IV inhibitory activity of protein hydrolyzates ...

    African Journals Online (AJOL)

    Background: Type 2 diabetes is a chronic metabolic disorder. Recently, dipeptidyl peptidase IV (DPP-IV) inhibitors that protect incretin hormones from being cleaved by DPP-IV have been used as drugs to control glycemia. This study examined the potential hypoglycemic effect of amaranth grain storage protein hydrolyzates ...

  3. 77 FR 64398 - Order of Succession for HUD Region IV

    Science.gov (United States)

    2012-10-19

    ... Region IV AGENCY: Office of Field Policy and Management, HUD. ACTION: Notice of Order of Succession... Field Offices (Region IV). This Order of Succession supersedes all previous Orders of Succession for HUD Region IV. DATES: Effective Date: October 9, 2012. FOR FURTHER INFORMATION CONTACT: Lawrence D. Reynolds...

  4. Revised and extended analysis of Br IV

    Science.gov (United States)

    Riyaz, A.; Rahimullah, K.; Tauheed, A.

    2014-01-01

    The spectrum of three-times ionized bromine Br IV has been studied in the 319-2350 Å wavelength region. The spectrum was recorded on a 3-m normal incidence vacuum spectrograph at the St. Francis Xavier University, Antigonish (Canada) and 6.65-m grazing incidence spectrograph at the Zeeman laboratory (Amsterdam). The light sources used were a triggered spark and sliding spark, respectively. The ground configuration of Br IV 3d104s24p2, the excited configurations 3d104s4p3+3d104s24p (4d+5d+6d+5s+6s+7s) in the odd parity system and 3d104s24p (5p+4f+5f)+3d104s4p2 (4d+5s)+3d104p4 in the even parity system have been studied. Relativistic Hartree-Fock (HFR) and least squares fitted (LSF) parametric calculations were used to interpret the observed spectrum. 120 Levels of Br IV have now been established, 58 being new. Among 424 spectral lines, 277 are newly classified. The levels 4s4p35S2, 4s24p4d 3F4 and 4p5p (3P0, 1, 3D1, 2, 3S1) are revised. We estimate the accuracy of our measured wavelength for sharp and unblended lines to be ±0.005 Å. The ionization limit is determined as 385,390±100 cm-1 (47.782±0.012 eV).

  5. Synthesis and characterization of thorium(IV) and uranium(IV) complexes with Schiff bases

    Energy Technology Data Exchange (ETDEWEB)

    Radoske, Thomas; Maerz, Juliane; Kaden, Peter; Patzschke, Michael; Ikeda-Ohno, Atsushi [Helmholtz-Zentrum Dresden-Rossendorf e.V., Dresden (Germany). Chemistry of the F-Elements

    2017-06-01

    We report herein the synthesis and characterization of several imine complexes of tetravalent thorium (Th(IV)) and uranium (U(IV)). The ligands investigated in this study are a Schiff base type, including the well-known salen ligand (H{sub 2}Le, Fig. 1). The complexation in solution was investigated by NMR measurements indicating paramagnetic effects of unpaired f-electrons of U(IV) on the ligand molecule. We also determined the solid-state molecular structures of the synthesized complexes by single crystal X-ray diffraction. The synthesized complexes show an eight-fold coordination geometry around the actinide center surrounded by two tetradentate ligands with 2N- and 2O-donor atoms.

  6. The kinetics of the cerium(IV)-uranium(IV) reaction at low sulfate concentrations

    International Nuclear Information System (INIS)

    Michaille, P.; Kikindai, T.

    1977-01-01

    The rate of oxidation of uranium(IV) by cerium(IV) was measured with a stopped-flow spectrophotometer at sulfuric acid concentrations of 2 x 10 -6 to 0.5 M. At a constant hydrogen ion concentration of 0.5 M, the maximum rate constant was observed for 2 x 10 -3 M sulfuric acid; at that concentration, two sulfate ions were involved in the activated complex. The dependence of the rate constant on the hydrogen ion concentration showed that the reaction paths involving one or two sulfate ions also involved one hydroxyl ion, whereas one hydrogen ion was involved in the five sulfate dependent path. Spectrophotometric measurements supported the existence of a hydrolyzed monosulfatocomplex of cerium(IV). (author)

  7. Thorium(IV) and zirconium(IV) complexes of oxygen donor ligands. Pt. 12

    International Nuclear Information System (INIS)

    Agarwal, R.K.; Jain, P.C.; Kapur, V.; Sharma, S.; Srivastava, A.K.

    1980-01-01

    Crystalline thorium (IV) chelates with mono N-oxides of 2,2'-bipyridine (bipyNO) and 1,10-phenanthroline (phenNO), ThX 4 x 2L(X = Cl,Br,NO 3 or NCS) and ThX 4 x 3L(X = I or ClO 4 and L = bipyNO or phenNO) have been synthesised and characterized on the basis of i.r. spectra, molar conductance, molecular weights, t.g.a. and d.t.a. data. All the complexes are weakly diamagnetic and contain bipyNO and phenNO bonded to thorium(IV) through nitrogen and oxygen. The coordination number of thorium(IV) varies from six to twelve depending on the nature of the anions. (orig.) [de

  8. Gen IV Materials Handbook Functionalities and Operation

    International Nuclear Information System (INIS)

    Ren, Weiju

    2009-01-01

    This document is prepared for navigation and operation of the Gen IV Materials Handbook, with architecture description and new user access initiation instructions. Development rationale and history of the Handbook is summarized. The major development aspects, architecture, and design principles of the Handbook are briefly introduced to provide an overview of its past evolution and future prospects. Detailed instructions are given with examples for navigating the constructed Handbook components and using the main functionalities. Procedures are provided in a step-by-step fashion for Data Upload Managers to upload reports and data files, as well as for new users to initiate Handbook access.

  9. General report of Technical Committee IV

    International Nuclear Information System (INIS)

    Feinendegen, L.E.

    1979-01-01

    During the report period, work in section IV of the Committee was continued on the molecular, cellular and organic levels with the aim to elucidate the origin, course and treatment possibility of the syndrome that may occur in the mammalian organism upon acute and chronic ionizing irradiation as a function of the radiation dose received. The investigations dealt a.o. with the effect of O 2 in protein radiolysis, recovery processes of the haematopoietic stem cells, delayed effects in the gastrointestical tract subsequent to local irradiation, and combination damage in the lungs and liver of rats upon combined cytostatic and radiation therapy. (orig./HP) [de

  10. Research in collegiate mathematics education IV

    CERN Document Server

    Dubinsky, Ed; Kaput, Jim

    2001-01-01

    This fourth volume of Research in Collegiate Mathematics Education (RCME IV) reflects the themes of student learning and calculus. Included are overviews of calculus reform in France and in the U.S. and large-scale and small-scale longitudinal comparisons of students enrolled in first-year reform courses and in traditional courses. The work continues with detailed studies relating students' understanding of calculus and associated topics. Direct focus is then placed on instruction and student comprehension of courses other than calculus, namely abstract algebra and number theory. The volume co

  11. A Gaussian IV estimator of cointegrating relations

    DEFF Research Database (Denmark)

    Bårdsen, Gunnar; Haldrup, Niels

    2006-01-01

    In static single equation cointegration regression modelsthe OLS estimator will have a non-standard distribution unless regressors arestrictly exogenous. In the literature a number of estimators have been suggestedto deal with this problem, especially by the use of semi-nonparametricestimators. T......In static single equation cointegration regression modelsthe OLS estimator will have a non-standard distribution unless regressors arestrictly exogenous. In the literature a number of estimators have been suggestedto deal with this problem, especially by the use of semi...... in cointegrating regressions. These instruments are almost idealand simulations show that the IV estimator using such instruments alleviatethe endogeneity problem extremely well in both finite and large samples....

  12. New Materials for NGNP/Gen IV

    International Nuclear Information System (INIS)

    Swindeman, Robert W.; Marriott, Douglas L.

    2009-01-01

    The bounding conditions were briefly summarized for the Next Generation Nuclear Plant (NGNP) that is the leading candidate in the Department of Energy Generation IV reactor program. Metallic materials essential to the successful development and proof of concept for the NGNP were identified. The literature bearing on the materials technology for high-temperature gas-cooled reactors was reviewed with emphasis on the needs identified for the NGNP. Several materials were identified for a more thorough study of their databases and behavioral features relative to the requirements ASME Boiler and Pressure Vessel Code, Section III, Division 1, Subsection NH.

  13. Gen IV Materials Handbook Functionalities and Operation

    Energy Technology Data Exchange (ETDEWEB)

    Ren, Weiju [ORNL

    2009-12-01

    This document is prepared for navigation and operation of the Gen IV Materials Handbook, with architecture description and new user access initiation instructions. Development rationale and history of the Handbook is summarized. The major development aspects, architecture, and design principles of the Handbook are briefly introduced to provide an overview of its past evolution and future prospects. Detailed instructions are given with examples for navigating the constructed Handbook components and using the main functionalities. Procedures are provided in a step-by-step fashion for Data Upload Managers to upload reports and data files, as well as for new users to initiate Handbook access.

  14. Responsabilidade civil das empresas de construção civil pelos vícios e defeitos do produto

    OpenAIRE

    Guedes Júnior, Alberto Augusto

    2013-01-01

    Responsabilidade civil das empresas de construção civil pelos vícios e defeitos do produto. A discussão ocorre através da análise rápida da evolução do sistema da responsabilidade civil o ordenamento geral e na legislação do consumidor, considerando o afastamento da teoria da culpa e o fortalecimento da responsabilização objetiva com fundamento a boa-fé. Este conflito e interação entre os códigos no que tange a responsabilização civil pelos acidentes de consumo traça a base dos ...

  15. Topological characterisation and identification of critical domains within glucosyltransferase IV (GtrIV of Shigella flexneri

    Directory of Open Access Journals (Sweden)

    Nair Anesh

    2011-12-01

    Full Text Available Abstract Background The three bacteriophage genes gtrA, gtrB and gtr(type are responsible for O-antigen glucosylation in Shigella flexneri. Both gtrA and gtrB have been demonstrated to be highly conserved and interchangeable among serotypes while gtr(type was found to be specific to each serotype, leading to the hypothesis that the Gtr(type proteins are responsible for attaching glucosyl groups to the O-antigen in a site- and serotype- specific manner. Based on the confirmed topologies of GtrI, GtrII and GtrV, such interaction and attachment of the glucosyl groups to the O-antigen has been postulated to occur in the periplasm. Results In this study, the topology of GtrIV was experimentally determined by creating different fusions between GtrIV and a dual-reporter protein, PhoA/LacZ. This study shows that GtrIV consists of 8 transmembrane helices, 2 large periplasmic loops, 2 small cytoplasmic N- and C- terminal ends and a re-entrant loop that occurs between transmembrane helices III and IV. Though this topology differs from that of GtrI, GtrII, GtrV and GtrX, it is very similar to that of GtrIc. Furthermore, both the N-terminal periplasmic and the C-terminal periplasmic loops are important for GtrIV function as shown via a series of loop deletion experiments and the creation of chimeric proteins between GtrIV and its closest structural homologue, GtrIc. Conclusion The current study provides the basis for elucidating the structure and mechanism of action of this important O-antigen modifying glucosyltransferase.

  16. On the stabilization of NbV-solutions by ZrIV and HfIV

    International Nuclear Information System (INIS)

    Soerensen, E.; Bjerre, A.B.

    1987-11-01

    Niobium cannot be separated from zirconium or hafnium when these elements occur together in solution with common anions such as Cl- and SO 4 --. This is ascribed to the copolymerisation of Nb v and the hydrolyzed ionic species of Zr IV v and Hf IV by which the colloidal particles are masked as Zr- and Hf-compounds. In HCl the particles are positively charged as opposed to when they are in sulphate solution where the Zr- and Hf- sulphate complexes confer a negative charge. The two cases are considered separately. (author)

  17. Spectroscopy study of ceramic pigments based on Ce(IV)-Pr(IV) oxide

    International Nuclear Information System (INIS)

    Furtado, L.; Toma, H.E.

    1991-01-01

    The synthesis and spectroscopic properties of a series of cerium(IV)-praseodimium(IV) oxide pigments are reported. The pigments exhibit brick-red colours and are suitable for ceramic applications because of their high temperature stability. Electronic absorption spectra of the pigments suspended in a gel matrix of polyvinyl alcohol-sodium tetradecaborate mixture, consists of broad band with gaussian components at 372 and 472nm. These bands are described to charge -transfer transitions from the occupied oxygen p-orbitals to the empty f levels of the lanthanides. (author)

  18. AS VIOLAÇÕES SOFRIDAS PELO POVO KRENAK E O DANO CAUSADO AO PROJETO DE VIDA

    Directory of Open Access Journals (Sweden)

    Rodrigo de Medeiros Silva

    2017-06-01

    Full Text Available Este artigo versa sobre as violações cometidas pelo Regime Militar ao povo Krenak e o possível dano ao projeto de vida. Conceituando esta espécie de dano como violação de direitos humanos, irá discorrer sobre a criação da Guarda Rural Indígena (GRIN, a instalação do presídio indígena em suas terras chamado “Reformatório Krenak” e o deslocamento forçado para outro centro de detenção indígena, denominado fazenda Guarani, no município de Carmésia/MG. Procurará se demonstrar que as ações cometidas a este povo, pelo Estado Brasileiro, devem ser reparadas também por atingir o modo e a expectativa de vida que possuíam a época. Para melhor identificar estes danos causados, o trabalho recorrerá à peça inicial da Ação Civil Pública nº 64483-95.2015.4.01.3800, impetrada pelo Ministério Público Federal, que trata das violações sofridas pelos Krenak e o Relatório da Comissão Nacional da Verdade, Volume II. Também se demostrará que a Corte Interamericana de Direitos Humanos já vem entendendo que este tipo de dano deve ser reparado.

  19. Movimentos sociais pelo transporte coletivo no Brasil manifestações, estratégias de luta e desafios

    Directory of Open Access Journals (Sweden)

    Kader Carvalho Assad

    2015-12-01

    Full Text Available O artigo trata dos movimentos sociais pelo transporte coletivo no Brasil, enfatizando suas trajetórias, agendas e estratégias de luta pelo acesso ao transporte, entendido como condição imprescindível não apenas para a democratização do espaço urbano, mas também para o acesso aos direitos civis, políticos, sociais, econômicos, culturais e ambientais. A revisão de literatura revela que na trajetória analisada os movimentos pelo transporte recorreram a diferentes estratégias: de manifestações espontâneas como os quebra-quebras e interdição de vias públicas à organização em coletivos abertos e descentralizados; de reivindicações contra o aumento no preço das passagens e protestos contra as péssimas condições de manutenção dos veículos à luta pela gratuidade e estatização do sistema, revelando assim o caráter radical e anticapitalista que adquiriram as lutas desencadeadas nos últimos anos.

  20. After SDSS-IV: Pioneering Panoptic Spectroscopy

    Science.gov (United States)

    Kollmeier, Juna; AS4 Collaboration

    2018-01-01

    I will describe the current plans for a next generation sky survey that will begin After SDSS-IV --- AS4. AS4 will be an unprecedented all-sky spectroscopic survey of over six million objects. It is designed to decode the history of the Milky Way galaxy, trace the emergence of the chemical elements, reveal the inner workings of stars, the growth of black holes, and investigate the origin of planets. It will provide the most comprehensive all-sky spectroscopy to multiply the science from the Gaia, TESS and eROSITA missions. AS4 will also create a contiguous spectroscopic map of the interstellar gas in the Milky Way and nearby galaxies that is 1,000 times larger than the state of the art, uncovering the self-regulation mechanisms of Galactic ecosystems. It will pioneer systematic, spectroscopic monitoring across the whole sky, revealing changes on timescales from 20 minutes to 20 years. The project is now developing new hardware to build on the SDSS-IV infrastructure, designing the detailed survey strategy, and actively seeking to complete its consortium of institutional and individual members.

  1. ARIES-IV Nested Shell Blanket Design

    International Nuclear Information System (INIS)

    Wong, C.P.C.; Redler, K.; Reis, E.E.; Will, R.; Cheng, E.; Hasan, C.M.; Sharafat, S.

    1993-11-01

    The ARIES-IV Nested Shell Blanket (NSB) Design is an alternate blanket concept of the ARIES-IV low activation helium-cooled reactor design. The reference design has the coolant routed in the poloidal direction and the inlet and outlet plena are located at the top and bottom of the torus. The NSB design has the high velocity coolant routed in the toroidal direction and the plena are located behind the blanket. This is of significance since the selected structural material is SiC-composite. The NSB is designed to have key high performance components with characteristic dimensions of no larger than 2 m. These components can be brazed to form the blanket module. For the diverter design, we eliminated the use of W as the divertor coating material by relying on the successful development of the gaseous divertor concept. The neutronics and thermal-hydraulic performance of both blanket concepts are similar. The selected blanket and divertor configurations can also meet all the projected structural, neutronics and thermal-hydraulics design limits and requirements. With the selected blanket and divertor materials, the design has a level of safety assurance rate of I (LSA-1), which indicates an inherently safe design

  2. Development of generation IV nuclear energy systems

    International Nuclear Information System (INIS)

    Matsui, Kazuaki; Oka, Yoshiaki; Ogawa, Masuro; Ichimiya, Masakazu; Noda, Hiroshi

    2003-01-01

    The fifth 'Generation IV International Forum (GIF), Policy Group Meetings' was held at the Zen-Nikku Hotel in Tokyo, on September 19-20, 2002, under participations of Abraham, Secretary of DOE in U.S.A., Columbani, Secretary of CEA in France, Fujiie, Chairman of CAE in Japan, Kano, Parliamental Minister of MIS in Japan, and so on. Ten nations entering GIF (Argentina, Brazil, Canada, France, Japan, Korea, South Africa, Switzerland, U.K., and U.S.A.) selected six next generation nuclear energy concepts for objects of international cooperative research and development aiming at its practice by 2030. These concepts applicable to not only power generation, but also hydrogen production, sea water purification, and so on, are sodium liquid metal cooled reactor (Japan), high temperature gas cooled reactor (France), Super-critical pressure water cooled reactor (SCWR: Canada), Lead metal cooled reactor (Switzerland), Gas cooled fast reactor (U.S.A.), and molten salts reactor. On the generation IV nuclear reactor systems aiming to further upgrade their sustainability, safety, economical efficiency, and nuclear non proliferation, the 'Plans on Technical Development' (Road-map) to decide priority of their R and Ds has been cooperatively discussed under frameworks of international research cooperation by the GIF members nations. Here were shared descriptions on nuclear fuel cycle as a remise of technical evaluation and adopted concepts by Japanese participants contributing to making up the Road-map. (G.K.)

  3. Tratamento da síndrome parkinsoniana pelo L-dopa

    Directory of Open Access Journals (Sweden)

    Roberto Melaragno

    1971-12-01

    Full Text Available O trabalho refere o tratamento com L-Dopa de 33 pacientes internados, sendo 19 homens e 14 mulheres. Os casos foram agrupados, segundo uma classificação esquemática, em leves, moderados, intensos e severos. As idades dos pacientes, previamente operados ou não, variaram de 42 a 78 anos. O esquema de medicação constou de administração de L-Dopa na dose inicial de 500 mg associado a um inibidor da MAO. A dose de L-Dopa era elevada de 500 mg cada 3 ou 4 dias, segundo a tolerância de cada paciente. Todos os sintomas dependentes, direta ou indiretamente, da rigidez tiveram melhoras mais nítidas em relação aos tremores. Durante a administração do medicamento os teores sangüíneos de ácido úrico e uréia, mostraram tendência para se elevar; a reserva alcalina, pelo contrário, tendeu para a diminuição; o hemograma revelou muitas vezes eosinofilia por vezes intensa. Os efeitos colaterais foram catalogados em dois tipos — efeitos adrenérgicos e efeitos dopaminérgicos — correspondentes a duas fases: uma primeira, de pequena duração, na qual foram usados concomitantemente o L-Dopa e um inibidor da MAO, surgindo cefaléia hipertensão arterial paroxística, rubor facial, sudorese, tenesmo vesical e angina pectoris; numa segunda fase surgiram os efeitos colaterais ditos dopaminérgicos, proporcionais à gravidade clínica do caso, cujas manifestações principais foram hipotensão arterial, sudorese fria, arritmia cardíaca e lipotimia. As complicações clínicas gerais eram representados habitualmente por anorexia, obstipação intestinal, náuseas, vômitos, discretas alterações do estado psíquico com depressão e euforia. Dentre as complicações neurológicas foram assinalados o estado parkinsonóide, discinesias e acatisia.

  4. Diferenciação de cepas de Candida albicans pelo sistema killer

    Directory of Open Access Journals (Sweden)

    Regina Celia Cândido

    1995-12-01

    Full Text Available Foi estudado o efeito killer de 9 cepas padrão de leveduras sobre 146 amostras de Candida albicans isoladas dos seguintes espécimes clínicos: mucosa bucal, fezes, lavado brônquico, escarro, secreção vaginal, urina, lesão de pele, lesão de unha e sangue. Usando este sistema foi possível diferenciar 23 biotipos de C. albicans. Os biotipos 211, 111 e 811 foram os mais freqüentemente isolados. A maioria das amostras de C. albicans (98,6% foi sensível a pelo menos uma ou mais das 9 cepas killer. Empregando- se este sistema foi possível demonstrar que 2 pacientes albergavam mesmo biotipo killer, respectivamente, 111 e 211, em diferentes espécimes clínicos, e em outro paciente, o mesmo biotipo (211 foi isolado de hemoculturas realizadas em ocasiões distintas. O uso do sistema killer para diferenciar os tipos entre as espécies de leveduras patogênicas, pode ser um método útil para estabelecer a eventual fonte de infecção, constituindo uma ajuda valiosa para o controle e vigilância de infecções nosocomiais causadas por leveduras.The authors studied the killer effect of nine standard strains of yeasts on 146 samples of Candida albicans isolated from the following clinical specimens: oral mucosa, feces, bronchial wash, sputum, vaginal secretion, urine, skin lesion, nail lesion and blood. Using this system it was possible to differentiate 23 biotypes of Candida albicans. The biotypes 211, 111 and 811 were most frequently isolated. Most of the samples of C. albicans (98.6% were sensitive to at least one or more of the nine killer strains. Using the killer system it was possible to show that two patients harbored the same killer biotypes, 111 and 211, respectively, in different clinical specimens and another patient harbored the same biotype (211 in blood cultures effected in different ocasions. The utilization of the killer system to differentiate types among species of pathogenic yeasts can be a useful method to stablish the eventual

  5. Infecção experimental pelo Encephalitozoon cuniculi em camundongos imunossuprimidos com dexametasona

    Directory of Open Access Journals (Sweden)

    Lallo Maria Anete

    2002-01-01

    Full Text Available OBJETIVO: O microsporídio Encephalitozoon cuniculi tem sido reconhecido como um patógeno oportunista em indivíduos imunossuprimidos, tais como pacientes com Aids. O objetivo do trabalho foi desenvolver animais farmacologicamente imunossuprimidos como modelo da infecção natural pelo E. cuniculi. MÉTODOS: Foram usados grupos distintos de camundongos Balb-C adultos, imunossuprimidos com diferentes doses de dexametasona (Dx, 3 ou 5 mg/kg/dia por via intraperitoneal fraction three-quarters IP e inoculados com esporos de E. cuniculi por via IP. Também foram usados grupos controle (animais inoculados, mas nãoimunossuprimidos, e animais imunossuprimidos, mas não inoculados. Os esporos de E. cuniculi foram previamente cultivados em células MDCK. Os animais foram sacrificados e submetidos à necropsia aos 7, 14, 21, 28 e 35 dias pós-inoculação. Fragmentos teciduais foram coletados e processados para análise por microscopia de luz, utilizando-se as técnicas de coloração de Gram -chromotrope e de hematoxilina-eosina. RESULTADOS: Em todos os animais imunossuprimidos e inoculados, porém especialmente naqueles que receberam 5 mg/kg/dia de Dx, os achados de necropsia mais proeminentes foram hepato e esplenomegalia. A inoculação experimental resultou em uma infecção disseminada e não-letal, caracterizada por lesões granulomatosas em diversos órgãos (fígado, pulmões, rins, intestino, encéfalo, porém mais notadamente no tecido hepático. Esporos de E. cuniculi foram observados em poucos animais tratados com 5 mg/kg/dia de Dx aos 35 dias pós-infecção. CONCLUSÕES: Microsporidiose em camundongos imunossuprimidos com Dx fornece um modelo útil para estudos da infecção por microsporídios, assemelhando-se àquela naturalmente observada em indivíduos imunodeficientes com Aids.

  6. Predicting DPP-IV inhibitors with machine learning approaches

    Science.gov (United States)

    Cai, Jie; Li, Chanjuan; Liu, Zhihong; Du, Jiewen; Ye, Jiming; Gu, Qiong; Xu, Jun

    2017-04-01

    Dipeptidyl peptidase IV (DPP-IV) is a promising Type 2 diabetes mellitus (T2DM) drug target. DPP-IV inhibitors prolong the action of glucagon-like peptide-1 (GLP-1) and gastric inhibitory peptide (GIP), improve glucose homeostasis without weight gain, edema, and hypoglycemia. However, the marketed DPP-IV inhibitors have adverse effects such as nasopharyngitis, headache, nausea, hypersensitivity, skin reactions and pancreatitis. Therefore, it is still expected for novel DPP-IV inhibitors with minimal adverse effects. The scaffolds of existing DPP-IV inhibitors are structurally diversified. This makes it difficult to build virtual screening models based upon the known DPP-IV inhibitor libraries using conventional QSAR approaches. In this paper, we report a new strategy to predict DPP-IV inhibitors with machine learning approaches involving naïve Bayesian (NB) and recursive partitioning (RP) methods. We built 247 machine learning models based on 1307 known DPP-IV inhibitors with optimized molecular properties and topological fingerprints as descriptors. The overall predictive accuracies of the optimized models were greater than 80%. An external test set, composed of 65 recently reported compounds, was employed to validate the optimized models. The results demonstrated that both NB and RP models have a good predictive ability based on different combinations of descriptors. Twenty "good" and twenty "bad" structural fragments for DPP-IV inhibitors can also be derived from these models for inspiring the new DPP-IV inhibitor scaffold design.

  7. Report for 2011 from the Bordeaux IVS Analysis Center

    Science.gov (United States)

    Charlot, Patrick; Bellanger, Antoine; Bourda, Geraldine; Collioud, Arnaud; Baudry, Alain

    2012-01-01

    This report summarizes the activities of the Bordeaux IVS Analysis Center during the year 2011. The work focused on (i) regular analysis of the IVS-R1 and IVS-R4 sessions with the GINS software package; (ii) systematic VLBI imaging of the RDV sessions and calculation of the corresponding source structure index and compactness values; (iii) imaging of the sources observed during the 2009 International Year of Astronomy IVS observing session; and (iv) continuation of our VLBI observational program to identify optically-bright radio sources suitable for the link with the future Gaia frame. Also of importance is the enhancement of the IVS LiveWeb site which now comprises all IVS sessions back to 2003, allowing one to search past observations for session-specific information (e.g. sources or stations).

  8. Comparative Analysis of Inpatient Costs for Obstetrics and Gynecology Surgery Patients Treated With IV Acetaminophen and IV Opioids Versus IV Opioid-only Analgesia for Postoperative Pain.

    Science.gov (United States)

    Hansen, Ryan N; Pham, An T; Lovelace, Belinda; Balaban, Stela; Wan, George J

    2017-10-01

    Recovery from obstetrics and gynecology (OB/GYN) surgery, including hysterectomy and cesarean section delivery, aims to restore function while minimizing hospital length of stay (LOS) and medical expenditures. Our analyses compare OB/GYN surgery patients who received combination intravenous (IV) acetaminophen and IV opioid analgesia with those who received IV opioid-only analgesia and estimate differences in LOS, hospitalization costs, and opioid consumption. We performed a retrospective analysis of the Premier Database between January 2009 and June 2015, comparing OB/GYN surgery patients who received postoperative pain management with combination IV acetaminophen and IV opioids with those who received only IV opioids starting on the day of surgery and continuing up to the second postoperative day. We performed instrumental variable 2-stage least-squares regressions controlling for patient and hospital covariates to compare the LOS, hospitalization costs, and daily opioid doses (morphine equivalent dose) of IV acetaminophen recipients with that of opioid-only analgesia patients. We identified 225 142 OB/GYN surgery patients who were eligible for our study of whom 89 568 (40%) had been managed with IV acetaminophen and opioids. Participants averaged 36 years of age and were predominantly non-Hispanic Caucasians (60%). Multivariable regression models estimated statistically significant differences in hospitalization cost and opioid use with IV acetaminophen associated with $484.4 lower total hospitalization costs (95% CI = -$760.4 to -$208.4; P = 0.0006) and 8.2 mg lower daily opioid use (95% CI = -10.0 to -6.4), whereas the difference in LOS was not significant, at -0.09 days (95% CI = -0.19 to 0.01; P = 0.07). Compared with IV opioid-only analgesia, managing post-OB/GYN surgery pain with the addition of IV acetaminophen is associated with decreased hospitalization costs and reduced opioid use.

  9. Atlantic Flyway review: Region IV - Fall 2003

    Science.gov (United States)

    Robbins, Chandler S.

    2004-01-01

    We welcome the Eden Mill station in northeastern Maryland to Region IV this year. With three stations reporting their worst year ever, we really need to be refreshed. After a cool and wet July, August was hot and wet in the east. Temperatures in September remained close to normal, but thanks to tropical storms Henri (6-8 Sep) and Isabel (18 Sep), rainfall was excessive in the Chesapeake Bay states. The entire Northeast had cool weather in October, starting with an early freeze on 3 Oct that triggered some good banding days in our region. Precipitation was unusually spotty in October, but plentiful at most of the Region IV stations. November temperatures were consistently well above the norm, starting with a record-breaking 81 ø in Baltimore on the 1st.Four of the five Maryland stations had their best day on 19 or 20 Oct. One might expect some of the Virginia coastal stations, Chincoteague, Kiptopeke, and Back Bay, to share the same best day, but they did not. Three stations reported an increase in birds per net hour this year, while seven had a decline. Summarizing the changes in rank in Table 2, Gray Catbird was the species with the most (5) increases in rank (in excess of decreases), followed by junco (4) and Myrtle Warbler and Swamp Sparrow (3 each). Yellowthroat had the most decreases (5), followed by redstart (3).Myrtle Warbler (4572) was once again the most commonly banded species in Region IV, followed by White-throated Sparrow (1723), Gray Catbird (1349), and Western Palm Warbler (1090). Michelle Davis' station on Key Biscayne is the envy of the rest of us. Her top eight species were all warblers and there was not a Myrtle among them. Imagine having Parula, Prairie, and Worm-eating warblers fighting for sixth place!Not showing among the top ten, however, are other surprises. Several banders commented on Sawwhet Owls and Bicknell's Thrushes. Deanna Dawson banded a Cerulean Warbler at Patuxent. Danny Bystrak caught 138 Swamp Sparrows at Jug Bay. In addition

  10. Goodpasture's autoimmune disease - A collagen IV disorder.

    Science.gov (United States)

    Pedchenko, Vadim; Richard Kitching, A; Hudson, Billy G

    2018-05-12

    Goodpasture's (GP) disease is an autoimmune disorder characterized by the deposition of pathogenic autoantibodies in basement membranes of kidney and lung eliciting rapidly progressive glomerulonephritis and pulmonary hemorrhage. The principal autoantigen is the α345 network of collagen IV, which expression is restricted to target tissues. Recent discoveries include a key role of chloride and bromide for network assembly, a novel posttranslational modification of the antigen, a sulfilimine bond that crosslinks the antigen, and the mechanistic role of HLA in genetic susceptibility and resistance to GP disease. These advances provide further insights into molecular mechanisms of initiation and progression of GP disease and serve as a basis for developing of novel diagnostic tools and therapies for treatment of Goodpasture's disease. Copyright © 2017. Published by Elsevier B.V.

  11. US Nuclear Regulatory Commission region IV

    International Nuclear Information System (INIS)

    Vanderburch, C.

    1996-01-01

    The NRC has established a policy to provide for the timely through and systematic inspection of significant operational events at nuclear power plants. This includes the use of an Augmented Inspection Team to determine the causes, conditions, and circumstances relevant to an event and to communicate its findings and conclusions to NRC management. In accordance with NRC Inspection Manual Chapter 0325. The Region IV Regional Administrator dispatched an Augmented Inspection Team to the Wolf Creek Nuclear Generating Station to review the circumstances surrounding a manual reactor trip on January 30, 1996, with the failure of five control rods to fully insert into the core, a failure of the turbine-driven auxiliary feedwater pump, and the subsequent loss of one train of the essential service water system

  12. Review of the BCI Competition IV

    Science.gov (United States)

    Tangermann, Michael; Müller, Klaus-Robert; Aertsen, Ad; Birbaumer, Niels; Braun, Christoph; Brunner, Clemens; Leeb, Robert; Mehring, Carsten; Miller, Kai J.; Müller-Putz, Gernot R.; Nolte, Guido; Pfurtscheller, Gert; Preissl, Hubert; Schalk, Gerwin; Schlögl, Alois; Vidaurre, Carmen; Waldert, Stephan; Blankertz, Benjamin

    2012-01-01

    The BCI competition IV stands in the tradition of prior BCI competitions that aim to provide high quality neuroscientific data for open access to the scientific community. As experienced already in prior competitions not only scientists from the narrow field of BCI compete, but scholars with a broad variety of backgrounds and nationalities. They include high specialists as well as students. The goals of all BCI competitions have always been to challenge with respect to novel paradigms and complex data. We report on the following challenges: (1) asynchronous data, (2) synthetic, (3) multi-class continuous data, (4) session-to-session transfer, (5) directionally modulated MEG, (6) finger movements recorded by ECoG. As after past competitions, our hope is that winning entries may enhance the analysis methods of future BCIs. PMID:22811657

  13. Titanium(IV), zirconium, hafnium and thorium

    International Nuclear Information System (INIS)

    Brown, Paul L.; Ekberg, Christian

    2016-01-01

    Titanium can exist in solution in a number of oxidation states. The titanium(IV) exists in acidic solutions as the oxo-cation, TiO 2+ , rather than Ti 4+ . Zirconium is used in the ceramics industry and in nuclear industry as a cladding material in reactors where its reactivity towards hydrolysis reactions and precipitation of oxides may result in degradation of the cladding. In nature, hafnium is found together with zirconium and as a consequence of the contraction in ionic radii that occurs due to the 4f -electron shell, the ionic radius of hafnium is almost identical to that of zirconium. All isotopes of thorium are radioactive and, as a consequence of it being fertile, thorium is important in the nuclear fuel cycle. The polymeric hydrolysis species that have been reported for thorium are somewhat different to those identified for zirconium and hafnium, although thorium does form the Th 4 (OH) 8 8+ species.

  14. Ultrathin magnetic structures IV applications of nanomagnetism

    CERN Document Server

    Heinrich, Bretislav

    2004-01-01

    The ability to understand and control the unique properties of interfaces has created an entirely new field of magnetism which already has a profound impact in technology and is providing the basis for a revolution in electronics. The last decade has seen dramatic progress in the development of magnetic devices for information technology but also in the basic understanding of the physics of magnetic nanostructures. Volume III describes thin film magnetic properties and methods for characterising thin film structure topics that underpin the present 'spintronics' revolution in which devices are based on combined magnetic materials and semiconductors. The present volume (IV) deals with the fundamentals of spintronics: magnetoelectronic materials, spin injection and detection, micromagnetics and the development of magnetic random access memory based on GMR and tunnel junction devices. Together these books provide readers with a comprehensive account of an exciting and rapidly developing field. The treatment is de...

  15. KENO-IV code benchmark calculation, (6)

    International Nuclear Information System (INIS)

    Nomura, Yasushi; Naito, Yoshitaka; Yamakawa, Yasuhiro.

    1980-11-01

    A series of benchmark tests has been undertaken in JAERI in order to examine the capability of JAERI's criticality safety evaluation system consisting of the Monte Carlo calculation code KENO-IV and the newly developed multigroup constants library MGCL. The present report describes the results of a benchmark test using criticality experiments about Plutonium fuel in various shape. In all, 33 cases of experiments have been calculated for Pu(NO 3 ) 4 aqueous solution, Pu metal or PuO 2 -polystyrene compact in various shape (sphere, cylinder, rectangular parallelepiped). The effective multiplication factors calculated for the 33 cases distribute widely between 0.955 and 1.045 due to wide range of system variables. (author)

  16. Cranial nerves III, IV and VI

    International Nuclear Information System (INIS)

    Laine, I.J.; Smoker, W.R.; Kuta, A.J.; Felton, W.L.

    1991-01-01

    Because of advances in CT and MR imaging, accurate identification and evaluation of cranial nerve lesions is now possible. Cranial nerves III, IV, and VI, providing motor and sensory control of the eye, can be evaluated as a unit. In this paper, the authors present an overview of the anatomy and pathology of these cranial nerves. We first illustrate their normal anatomic pathways from the brain stem to the orbit. This is followed by clinical examples of patients with a variety of isolated and complex palsies of these three cranial nerves. This is accomplished by inclusion of ocular photographs, correlative imaging studies, and the use of diagrams. Knowledge of the gross and imaging anatomy and the ophthalmologic manifestations of pathology affecting these three cranial nerves permits a tailored approach to their evaluation

  17. (N-Benzyl-N-isopropyldithiocarbamatochloridodiphenyltin(IV

    Directory of Open Access Journals (Sweden)

    Amirah Faizah Abdul Muthalib

    2010-09-01

    Full Text Available The SnIV atom in the title organotin dithiocarbamate, [Sn(C6H52(C11H14NS2Cl], is penta-coordinated by an asymmetrically coordinating dithiocarbamate ligand, a Cl and two ispo-C atoms of the Sn-bound phenyl groups. The resulting C2ClS2 donor set defines a coordination geometry intermediate between square-pyramidal and trigonal-bipyramidal with a slight tendency towards the latter. The formation of close intramolecular C–H...Cl and C–H...S contacts precludes the Cl and S atoms from forming significant intermolecular contacts. The presence of C–H...π contacts leads to the formation of supramolecular arrays that stack along the b axis.

  18. IV Characterisation for the VELO Upgrade

    CERN Multimedia

    Franco Lima, Vinicius

    2018-01-01

    LHCb is a dedicated heavy flavour physics experiment that operates at the LHC. The LHCb collaboration plans to change key features of the present detectors for Run III, moving to a full detector readout at 40MHz and operating at a luminosity of 1-2x1033cm-2s-1. The new Vertex Locator (VELO) detector will use hybrid pixel detectors composed of silicon sensors bump-bonded to new VeloPix CMOS readout chips designed for the new 40MHz readout rate. We will present a novel way of delivering bias through the ASIC backside in order to test IV characteristics of sensors in vacuum before module construction. The appropriate laboratory setups developed to test VELO hybrids for production will also be discussed.

  19. The Elegy in the Aeneid Book IV

    Directory of Open Access Journals (Sweden)

    Paulo Martins

    2017-12-01

    Full Text Available In Aeneid’s book IV, Virgil makes use of elegiac topics while narrating Dido and Aeneas’ ill-fated love, inserting these topics into the epic genre. Some key characteristics of elegiac lover, such as the furor by which he is taken when injured by Cupid’s dart; lover’s idleness; the mala fama that emerges from the love affair; and, lastly, the misera condition in which the lover is thrown to, always followed by a lament; all these has shown to be present in Aeneid’s book IV. So, in addition to evincing how epic genre, without losing its formal rigour, subsume other genres, in this case the elegiac one, this article observes how this procedure takes part in both Vergil’s intra-narrative and extra-narrative purpose when composing Aeneid. In the first case, if we bear in mind that books I to VI are concerned with the construction of Aeneas’ heroic ἦθος, the hero’s denial in staying together with the queen confirms, once again, his destiny, which is Rome’s foundation, that is conventionally of an epic hero – and not of an elegiac lover. As for the second one, it is first important to be aware of Vergil’s aim when composing Aeneid, which is to insert Rome’s history into a myth, which is the elegiac poem itself. Therefore, Dido’s abandonment and her following imprecation in verses 590-640 are used by the poet to justify, even if ironically, Carthaginians’ rivalry and violence against Romans throughout the Punic Wars, putting them as the result of a woman’s love frustration.

  20. Modcomp MAX IV System Processors reference guide

    Energy Technology Data Exchange (ETDEWEB)

    Cummings, J.

    1990-10-01

    A user almost always faces a big problem when having to learn to use a new computer system. The information necessary to use the system is often scattered throughout many different manuals. The user also faces the problem of extracting the information really needed from each manual. Very few computer vendors supply a single Users Guide or even a manual to help the new user locate the necessary manuals. Modcomp is no exception to this, Modcomp MAX IV requires that the user be familiar with the system file usage which adds to the problem. At General Atomics there is an ever increasing need for new users to learn how to use the Modcomp computers. This paper was written to provide a condensed Users Reference Guide'' for Modcomp computer users. This manual should be of value not only to new users but any users that are not Modcomp computer systems experts. This Users Reference Guide'' is intended to provided the basic information for the use of the various Modcomp System Processors necessary to, create, compile, link-edit, and catalog a program. Only the information necessary to provide the user with a basic understanding of the Systems Processors is included. This document provides enough information for the majority of programmers to use the Modcomp computers without having to refer to any other manuals. A lot of emphasis has been placed on the file description and usage for each of the System Processors. This allows the user to understand how Modcomp MAX IV does things rather than just learning the system commands.

  1. New mono-organotin (IV) dithiocarbamate complexes

    International Nuclear Information System (INIS)

    Muthalib, Amirah Faizah Abdul; Baba, Ibrahim

    2014-01-01

    Eighteen new mono-organotin dithiocarbamate compounds derived each nine from methyltin(IV) and phenyltin(IV) reacted using in-situ method with various type of N-dialkylamine together with carbon disulphide with the ratio of 1:3:3. Elemental and gravimetric analysis showed that the general formula of these compounds were RSnCl[S 2 CNR′R″] 2 (R= Ph, CH 3 , R′ = CH 3 , C 2 H 5 , C 7 H 7 and R″ = C 2 H 5 , C 6 H 11 , iC 3 H 7 , C 7 H 7 ). These compounds had been characterized by infrared spectroscopy, ultraviolet spectroscopy, 1 H, 13 C NMR spectroscopy and single crystal X-ray crystallography. The infrared spectra of these compounds showed three important peaks indicating the formation of dithiocarbamate compounds, ν(C N), ν(C S) and ν(Sn-S) band which present in the region of 1444–1519, 954–1098 and 318–349 cm −1 respectively. The ultraviolet-visible spectra showed an absorption band for the π - π* transition of N C S group in the range of 253 – 259 nm due to the intramolecular charge transfer of the ligand. The 13 C NMR spectra showed an important shift for δ(N 13 CS 2 ) in the range of 196.8 – 201.9 ppm.. Single crystal X-ray diffraction studies showed three new structures with the general formula of PhSnCl[S 2 CN(Et)(i−Pr)] 2 , MeSnCl[S 2 CN(Me)(Cy)] 2 and MeSnCl[S 2 CN(i−Pr)(CH 2 Ph)] 2 . All structures having a distorted octahedral geometry set by CClS 4 donor atom from the two chelating dithiocarbamate ligands

  2. Lutas práticas e epistemológicas pelo abolicionismo

    Directory of Open Access Journals (Sweden)

    Antonio Pedro Dores

    2015-10-01

    áticas ilegais de vários estados seduzidos por essa estratégia recentemente denunciada pelo próprio estado federal norte-americano, faz-nos perguntar que função terá a tortura na satisfação da natureza humana. O abolicionismo, conclui-se, é parte integrante do processo civilizacional. A ponta de diamante da civilização, apesar de todas as contradições, tem vingado. Como afirma Norbert Elias, é um problema de perspectiva temporal e histórica. Estamos num ciclo de recuo. Mas a evolução pode voltar a ter um sentido moralmente positivo.

  3. Conhecimento de Libras pelos Médicos do Distrito Federal e Atendimento ao Paciente Surdo

    Directory of Open Access Journals (Sweden)

    Leticia Ferreira Gomes

    Full Text Available RESUMO O ensino da Língua Brasileira de Sinais (Libras nas escolas médicas é pouco difundido, e este cenário pode dificultar o atendimento de importante parcela da população: o paciente surdo. De acordo com o Instituto Brasileiro de Geografia e Estatística (IBGE, cerca de 24% da população brasileira tem algum tipo de deficiência, sendo parte de um grupo conhecido como vulneráveis. A surdez está entre as deficiências mais prevalentes, e no contexto do atendimento médico a dificuldade em atender integralmente o paciente surdo constitui um problema de saúde pública relevante, mas pouco abordado. O objetivo do presente estudo foi avaliar o conhecimento de Libras por médicos do Distrito Federal e sua percepção frente ao atendimento de pacientes surdos. Assim, foi realizado um estudo observacional transversal e descritivo com aplicação de questionários a 101 médicos escolhidos ao acaso, atuantes no Sistema Único de Saúde (SUS no Distrito Federal. Foram entrevistados médicos de 24 especialidades, com idade média de 41 anos. Deles, 92,1% já atenderam um paciente surdo e 76,2% consideraram o conhecimento de Libras importante para sua prática médica, mas apenas um relatou conhecimento básico na língua. Quanto ao sentimento do médico no atendimento, houve predomínio de incerteza e desconforto. Um número significativo de médicos já realizou atendimento de pacientes surdos em sua prática profissional no SUS, e a maioria considerou o conhecimento de Libras relevante, especialmente os médicos com menos de 55 anos de idade. Possivelmente, o sentimento de desconforto no atendimento decorre do predominante desconhecimento da língua pelos médicos e da conseguinte dificuldade durante o atendimento. Destaca-se a importância da implantação ou ampliação do estudo de Libras antes ou durante a formação médica e dos demais cursos da área de saúde. A conscientização dos profissionais de saúde perante o atendimento

  4. Are stage IV vestibular schwannomas preoperatively different from other stages?

    Science.gov (United States)

    Tringali, Stéphane; Dubreuil, Christian; Zaouche, Sandra; Ferber-Viart, Chantal

    2008-01-01

    The aim of this study was to focus on the clinical and paraclinical symptoms of patients suffering from Stage IV vestibular schwannomas (VSs). In this prospective study, we included 734 patients who have VS and candidates for operation. Patients were classified as having Stage I, II, III, or IV tumors according to Tos criteria as evaluated by magnetic resonance imaging. PREOPERATIVE CLINICAL EVALUATION: We recorded the occurrence of complaints (%) and duration (yr) of hearing loss, tinnitus, and balance disorder. Preoperative paraclinical evaluation included pure-tone (PTA) and speech audiometry, auditory brainstem response (ABR) patterns, and vestibular deficit at videonystamography (VNG). Continuous variables were compared between Stage IV and other stages using analysis of variance. Qualitative variables expressed as a percentage of presence were compared between Stage IV and other stages using percentage comparison. Quantitative Parameters. Patients with Stage IV VS were significantly younger as compared with patients with other stages. Stage IV hearing loss was greater compared with other stages at 250 and 500 Hz but smaller at 2,000 and 8,000 Hz. We found no difference in the loss of PTA between Stage IV and the other stages. Speech discriminancy score was smaller in Stage IV. The durations of hearing loss, tinnitus, and balance disorders were similar whatever the tumor stage. Auditory brainstem response patterns showed no difference in Wave III latency between Stage IV VS and other stages, whereas Wave V latency and V-I interval were higher in Stage IV. Both ABR threshold and VNG caloric deficit were higher in Stage IV VS compared with other stages. Qualitative Parameters. The percentage of patients with Stage IV was lower than that with Stages II and III. The percentage of men and women was similar in all stages. The occurrence of hearing loss was similar in all stages, whereas that of tinnitus was lower in Stage IV compared with Stages I and II. In

  5. Collagen type IV at the fetal-maternal interface.

    Science.gov (United States)

    Oefner, C M; Sharkey, A; Gardner, L; Critchley, H; Oyen, M; Moffett, A

    2015-01-01

    Extracellular matrix proteins play a crucial role in influencing the invasion of trophoblast cells. However the role of collagens and collagen type IV (col-IV) in particular at the implantation site is not clear. Immunohistochemistry was used to determine the distribution of collagen types I, III, IV and VI in endometrium and decidua during the menstrual cycle and the first trimester of pregnancy. Expression of col-IV alpha chains during the reproductive cycle was determined by qPCR and protein localisation by immunohistochemistry. The structure of col-IV in placenta was examined using transmission electron microscopy. Finally, the expression of col-IV alpha chain NC1 domains and collagen receptors was localised by immunohistochemistry. Col-IV alpha chains were selectively up-regulated during the menstrual cycle and decidualisation. Primary extravillous trophoblast cells express collagen receptors and secrete col-IV in vitro and in vivo, resulting in the increased levels found in decidua basalis compared to decidua parietalis. A novel expression pattern of col-IV in the mesenchyme of placental villi, as a three-dimensional network, was found. NC1 domains of col-IV alpha chains are known to regulate tumour cell migration and the selective expression of these domains in decidua basalis compared to decidua parietalis was determined. Col-IV is expressed as novel forms in the placenta. These findings suggest that col-IV not only represents a structural protein providing tissue integrity but also influences the invasive behaviour of trophoblast cells at the implantation site. Copyright © 2014 Elsevier Ltd. All rights reserved.

  6. Seleção de progênies de eucalipto pelo índice Z por MQM e Blup

    Directory of Open Access Journals (Sweden)

    Cristiane Aparecida Fioravante Reis

    2011-05-01

    Full Text Available O objetivo deste trabalho foi avaliar a eficiência do índice Z (índice somatório das variáveis padronizadas na seleção de progênies de irmãos completos entre Eucalyptus grandis e Eucalyptus urophylla via método dos quadrados mínimos (MQM e da melhor predição linear não viesada (Blup. Os experimentos foram realizados em dois tipos de solo e de ambiente, em blocos ao acaso com cinco repetições, oito plantas por parcela e espaçamento de 3x2 m. Aos três anos de idade, as plantas foram avaliadas quanto ao incremento médio anual de madeira, à densidade básica, ao rendimento de celulose e ao álcali efetivo. Para a comparação da eficiência da seleção das melhores progênies, pelos procedimentos MQM e Blup, foi obtido o índice Z para cada indivíduo. Posteriormente, foram obtidas as médias preditas das progênies para o índice Z, ranqueadas em sentido favorável ao melhoramento. O índice clássico também foi utilizado. A coincidência entre as melhores progênies selecionadas pelos índices clássico e Z foi boa. No entanto, o índice Z permite visualização gráfica, o que possibilita verificar em quais caracteres uma determinada progênie apresenta alguma deficiência. Não há diferença entre as melhores progênies selecionadas pelo índice Z via MQM e Blup.

  7. Thermodynamic properties of actinide complexes. IV. Thorium(IV)- and uranyl(VI)-malonate systems

    Energy Technology Data Exchange (ETDEWEB)

    Di Bernardo, P; Di Napoli, V; Cassol, A; Magon, L [Consiglio Nazionale delle Ricerche, Padua (Italy). Lab. di Chimica e Tecnologia dei Radioelementi

    1977-01-01

    The stability constants and the enthalpies of formation of thorium(IV)- and uranyl(VI)-malonate complexes have been determined by potentiometric and calorimetric titrations in 1.00 M solutions of Na(ClO/sub 4/) at 25/sup 0/C. All complexes formed are found to be stabilized by a large entropy gain. The values for the stability constants agree with an ionic bonding model. The malonate behaves as a bidentate ligand forming only chelate complexes.

  8. Transient Analysis of Generation IV quick reactors; Analisis de Transitorios en Reactores Rapidos de Generacion IV

    Energy Technology Data Exchange (ETDEWEB)

    Vazquez, M.; Martin-Fuertes, F.

    2013-07-01

    As a complement to the attached code 3D neutron-CIEMAT thermohydraulic added a module to simulate transient. Temporary kinetics is resolved by factoring flow in a spatial part and another storm. MCNP provides the reactivity and updated spatial function and COBRA-IV calculates the temperature distribution. Temporary dependence of amplitude is calculated using time delayed neutron Kinetic equations. As an example of application, examines a transient loss of flow in MYRRHA, a lead-cooled experimental reactor.

  9. Complexes of uranium (IV) and thorium (IV) with α-picolinic acid, nicotinic acid, anthranilic acid and N-phenylanthranilic acid

    International Nuclear Information System (INIS)

    Singh, M.; Singh, R.

    1979-01-01

    Stable U(IV) and Th(IV) complexes with the title ligands have been synthesised from U(OAc) 4 , and Th(OAc) 4 . Magnetic susceptibilities, IR and reflectance spectra of U(IV) and IR spectra of Th(IV) complexes have been studied which indicate eight coordination for U(IV) in these chelates. (auth.)

  10. O ENTENDIMENTO DOS ESTUDANTES DOS CURSOS TÉCNICOS DE ADMINISTRAÇÃO SOBRE AS ATIVIDADES REALIZADAS PELO MARKETING

    OpenAIRE

    Laeber, Izabel Maria; Mainardes, Emerson Wagner; Monte-mor, Danilo Soares

    2016-01-01

    Este estudo teve como objetivo avaliar a percepção dos estudantes dos cursos técnicos em Administração sobre o seu entendimento das atividades realizadas por um profissional de Marketing. O referencial teórico abrange conceitos sobre marketing, mix de marketing formado pelos 4 Ps (produto, preço, praça e promoção) e o ensino de marketing. No que se refere aos aspectos metodológicos, realizou-se um estudo de caráter descritivo e de natureza quantitativa, tendo como instrumento de coleta de dad...

  11. O sujeito biotecnológico na viagem pelo reino das batatas trangênicas, porquinhos fosforecentes e almas codificadas

    OpenAIRE

    Hüning, Simone Maria

    2008-01-01

    Este estudo versa sobre a centralidade que as biotecnologias vêm assumindo na constituição e compreensão da subjetividade na contemporaneidade a partir de uma pesquisa que analisa a proliferação das biotecnologias e a intensificação de enunciados sobre as mesmas na vida cotidiana. Tomando as ferramentas conceituais oferecidas pelos trabalhos de Bruno Latour e Michel Foucault, iniciase esta tese pela análise da constituição da mesma, que é permeada por questões políticas, éticas, institucionai...

  12. Avaliação do ventrículo direito pelo ecocardiograma com doppler tecidual na embolia pulmonar aguda

    Directory of Open Access Journals (Sweden)

    Ana Clara Tude Rodrigues

    2013-06-01

    Full Text Available FUNDAMENTO: A avaliação da função Ventricular Direita (VD pelo ecocardiograma em pacientes com Tromboembolismo Pulmonar (TEP é complexa, frequentemente qualitativa; o Doppler tecidual tem sido utilizado para avaliação semiquantitativa dessa câmara, com algumas limitações. OBJETIVO: Avaliar a função do VD no TEP pelo ecocardiograma com Doppler tecidual, complementando com o peptídeo atrial natriurético (BNP. MÉTODOS: Foram estudados pacientes com TEP pelo ecocardiograma com Doppler tecidual e BNP até 24 horas do diagnóstico, obtendo-se as velocidades miocárdicas (s', strain, strain rate e índice de performance miocárdica do VD; disfunção do VD foi iagnosticada por hipocinesia da câmara, movimento anormal septal e relação VD/VE >1. De acordo com o BNP os pacientes foram divididos em Grupo I, BNP 50 pg/mL. RESULTADOS: De 118 pacientes, 100 (60 homens, idade = 55 ± 17 anos foram analisados; observou-se disfunção do VD em 28%, mais frequentemente no grupo II (19 vs. 9 pacientes, p < 0,001. O grupo II era mais idoso (64 ± 19 vs. 50 ± 15 anos, apresentava menor velocidade de s' (10,5 ± 3,5 vs. 13,2 ± 3,1 cm/s e maior pressão pulmonar (48 ± 11 vs. 35 ± 11 mmHg, p < 0,001 para todos. O ponto de corte de s' para disfunção do VD foi de 10,8 cm/s (especificidade = 85%, sensibilidade = 54%, com moderada correlação entre o BNP e a onda s'(r = -0,39. CONCLUSÃO: No TEP, a disfunção do VD pelo ecocardiograma se acompanha de elevação do BNP; apesar confirmar adequadamente a presença de disfunção do VD, o Doppler tecidual apresenta sensibilidade limitada para este diagnóstico.

  13. Infarto cerebral em duas crianças infectadas pelo HIV-1 Ischaemic stroke in two children with HIV-1

    Directory of Open Access Journals (Sweden)

    Cristiane Rocha

    2003-12-01

    Full Text Available Os quadros vasculares são incomuns não somente nos pacientes adultos (1% como também nas crianças. Nosso objetivo é alertar para a possibilidade da infecção pelo HIV-1 em crianças com manifestações cerebrovasculares. Das 204 crianças infectadas pelo HIV acompanhadas no Ambulatório de SIDA, descrevemos dois pacientes pré-escolares do gênero masculino, com quadro agudo febril, rebaixamento do nível de consciência, status epilepticus e hemiparesia como primeira manifestação de infecção pelo HIV-1. Nos dois casos evidenciou-se extensa isquemia em território da artéria cerebral média. Um dos pacientes evoluiu com tetraparesia espástica grave, sem contactuar com o meio, epilepsia parcial e óbito 4 anos após o diagnóstico, sem melhora do quadro neurológico. O outro paciente apresentou hemiparesia direita e afasia global, evoluindo com regressão completa do quadro neurológico. A infreqüência desses achados torna importante o seu relato, visando a inclusão da infecção pelo HIV-1 no diagnóstico diferencial das quadros cerebrovasculares na criança.Cerebral ischaemia caused by inflammatory vasculopathies has been described as a complication of human immunodeficiency virus (HIV infection. The goal of our study is to report two cases of pediatric human immunodeficiency virus infection and cerebrovascular manifestations. We describe two pre-school boys, from a group of 204 outpatients, who presented fever, seizures, hemiparesis and impairment of conscience level as a first symptom of HIV-1 infection. The serial imaging studies revealed infarction of middle cerebral artery in both cases. The first one child had a severe spastic tetraparesis and partial epilepsy and died four years later without any improvement despite of the antiretroviral therapy. The second patient had a right hemiparesis and global aphasia totally recovered two years later with antiretroviral and rehabilitation therapies. HIV infection should be included

  14. Estimativa do risco de infecção tuberculosa em populações vacinadas pelo BCG

    Directory of Open Access Journals (Sweden)

    Arantes Gilberto Ribeiro

    1992-01-01

    Full Text Available A revacinação de escolares com BCG, capaz de restaurar a alergia remanescente de vacinação realizada nos primeiros meses de vida, porém incapaz de modificar a alergia devida à infecção pelo M. tuberculosis, possibilitaria a quantificação da parcela dessa população infectada pelo bacilo de Koch. Foi desenvolvida pesquisa com o objetivo de avaliar a aplicabilidade desses pressupostos na estimativa do risco de infecção tuberculosa em áreas sob elevada cobertura com BCG. A população de estudo foi constituída por escolares com 6 a 9 anos de idade freqüentando escolas municipais da zona leste da cidade de São Paulo, durante o primeiro semestre letivo de 1988. De 11.455 vacinados, apenas 7.470 foram submetidos ao teste tuberculínico, revacinados em seguida e retestados dez semanas depois. Destes, 3.314 tinham sido vacinados no primeiro trimestre de vida com meia dose e os demais 4.156 receberam dose plena acima dessa idade (75% no primeiro ano de vida, 20% no segundo e 5% no terceiro. A contagem dos infectados, pelo confronto dos resultados pré e pós vacinais em tabelas de correlação, foi realizada segundo os critérios do método original e modificação introduzida pelos autores, separadamente para os vacinados no primeiro trimestre de vida e após essa idade. O risco de infecção foi, respectivamente, 0,35% e 0,37% com o critério original e 0,45% e 0,49% com o modificado. O referencial médio disponível para a área estudada, estimado por outros métodos, foi 0,55%. As diferenças entre critérios e idades e destes com o referencial não foram significantes (P > 0,05. Os resultados sugerem que o método é aplicável para a estimativa do risco de infecção tuberculosa na idade escolar, em vacinados com BCG no primeiro ano de vida, com dose plena de vacina.

  15. Estimativa do risco de infecção tuberculosa em populações vacinadas pelo BCG

    Directory of Open Access Journals (Sweden)

    Gilberto Ribeiro Arantes

    1992-04-01

    Full Text Available A revacinação de escolares com BCG, capaz de restaurar a alergia remanescente de vacinação realizada nos primeiros meses de vida, porém incapaz de modificar a alergia devida à infecção pelo M. tuberculosis, possibilitaria a quantificação da parcela dessa população infectada pelo bacilo de Koch. Foi desenvolvida pesquisa com o objetivo de avaliar a aplicabilidade desses pressupostos na estimativa do risco de infecção tuberculosa em áreas sob elevada cobertura com BCG. A população de estudo foi constituída por escolares com 6 a 9 anos de idade freqüentando escolas municipais da zona leste da cidade de São Paulo, durante o primeiro semestre letivo de 1988. De 11.455 vacinados, apenas 7.470 foram submetidos ao teste tuberculínico, revacinados em seguida e retestados dez semanas depois. Destes, 3.314 tinham sido vacinados no primeiro trimestre de vida com meia dose e os demais 4.156 receberam dose plena acima dessa idade (75% no primeiro ano de vida, 20% no segundo e 5% no terceiro. A contagem dos infectados, pelo confronto dos resultados pré e pós vacinais em tabelas de correlação, foi realizada segundo os critérios do método original e modificação introduzida pelos autores, separadamente para os vacinados no primeiro trimestre de vida e após essa idade. O risco de infecção foi, respectivamente, 0,35% e 0,37% com o critério original e 0,45% e 0,49% com o modificado. O referencial médio disponível para a área estudada, estimado por outros métodos, foi 0,55%. As diferenças entre critérios e idades e destes com o referencial não foram significantes (P > 0,05. Os resultados sugerem que o método é aplicável para a estimativa do risco de infecção tuberculosa na idade escolar, em vacinados com BCG no primeiro ano de vida, com dose plena de vacina.

  16. Computations of nuclear response functions with MACK-IV

    International Nuclear Information System (INIS)

    Abdou, M.A.; Gohar, Y.

    1978-01-01

    The MACK computer program calculates energy pointwise and multigroup nuclear response functions from basic nuclear data in ENDF/B format. The new version of the program, MACK-IV, incorporates major developments and improvements aimed at maximizing the utilization of available nuclear data and ensuring energy conservation in nuclear heating calculations. A new library, MACKLIB-IV, of nuclear response functions was generated in the CTR energy group structure of 171 neutron groups and 36 gamma groups. The library was prepared using MACK-IV and ENDF/B-IV and is suitable for fusion, fusion-fission hybrids, and fission applications

  17. 1L Mark-IV Target Design Review

    Energy Technology Data Exchange (ETDEWEB)

    Koehler, Paul E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-11-16

    This presentation includes General Design Considerations; Current (Mark-III) Lower Tier; Mark-III Upper Tier; Performance Metrics; General Improvements for Material Science; General Improvements for Nuclear Science; Improving FOM for Nuclear Science; General Design Considerations Summary; Design Optimization Studies; Expected Mark-IV Performance: Material Science; Expected Mark-IV Performance: Nuclear Science (Disk); Mark IV Enables Much Wider Range of Nuclear-Science FOM Gains than Mark III; Mark-IV Performance Summary; Rod or Disk? Center or Real FOV?; and Project Cost and Schedule.

  18. BALTICA IV. Plant maintenance for managing life and performance

    Energy Technology Data Exchange (ETDEWEB)

    Hietanen, S.; Auerkari, P. [eds.] [VTT Manufacturing Technology, Espoo (Finland). Operational Reliability

    1998-12-31

    BALTICA IV International Conference on Plant Maintenance Managing Life and performance held on September 7-9, 1998 on board M/S Silja Symphony on its cruise between Helsinki-Stockholm and at Aavaranta in Kirkkonummi. The BALTICA IV conference provides a forum for the transfer of technology from applied research to practice. This is one of the two volumes of the proceedings of the BALTICA IV International Conference on Plant Maintenance Managing Life and Performance. The BALTICA IV conference focuses on new technology, recent experience and applications of condition and life management, and on improvements in maintenance strategies for safe and economical operation of power plants. (orig.)

  19. Computations of nuclear response functions with MACK-IV

    Energy Technology Data Exchange (ETDEWEB)

    Abdou, M A; Gohar, Y

    1978-01-01

    The MACK computer program calculates energy pointwise and multigroup nuclear response functions from basic nuclear data in ENDF/B format. The new version of the program, MACK-IV, incorporates major developments and improvements aimed at maximizing the utilization of available nuclear data and ensuring energy conservation in nuclear heating calculations. A new library, MACKLIB-IV, of nuclear response functions was generated in the CTR energy group structure of 171 neutron groups and 36 gamma groups. The library was prepared using MACK-IV and ENDF/B-IV and is suitable for fusion, fusion-fission hybrids, and fission applications.

  20. BALTICA IV. Plant maintenance for managing life and performance

    Energy Technology Data Exchange (ETDEWEB)

    Hietanen, S; Auerkari, P [eds.; VTT Manufacturing Technology, Espoo (Finland). Operational Reliability

    1999-12-31

    BALTICA IV International Conference on Plant Maintenance Managing Life and performance held on September 7-9, 1998 on board M/S Silja Symphony on its cruise between Helsinki-Stockholm and at Aavaranta in Kirkkonummi. The BALTICA IV conference provides a forum for the transfer of technology from applied research to practice. This is one of the two volumes of the proceedings of the BALTICA IV International Conference on Plant Maintenance Managing Life and Performance. The BALTICA IV conference focuses on new technology, recent experience and applications of condition and life management, and on improvements in maintenance strategies for safe and economical operation of power plants. (orig.)

  1. Microbioestratigrafia do Mesozóico-Cenozóico Brasileiro:Um Passeio pelo Tempo.

    Directory of Open Access Journals (Sweden)

    Cecília Cunha Lana

    2007-07-01

    Full Text Available O conhecimento bioestratigráfico do Mesozóico-Cenozóico das bacias sedimentares brasileiras relaciona-se estreitamente com o entendimento da evolução geológica da margem continental, o qual por sua vez, condicionou os caminhos e avanços da exploração petrolífera no país, nos últimos 50 anos. A exploração petrolífera em bacias brasileiras ganhou forte impulso na década de 1950, com as descobertas pioneiras em bacias terrestres (Recôncavo, Tucano, Sergipe-Alagoas e Espírito Santo, inicialmente confinadas em contextos tectono-sedimentares típicos de riftes. Nestascalhas deposicionais, formadas na separação dos no eocretáceo e inicialmente preenchidas com sedimentação essencialmente continental lacustrefluvial, acabamos por reconhecer e aprender a utilizaros primeiros grupos de microfósseis importantes do ponto de vista bioestratigráfico: os ostracodes e os palinomorfos. Do final de 1950 a meados de 1960 desenvolveram-se importantes trabalhos sobre asdiversificadas e abundantes faunas de ostracodes não-marinhos das seções riftes brasileiras, faunas estas que, seguramente, não têm registro paralelo em bacias rifte do mundo inteiro (Krömmelbein,1962; Vianna, 1966. A resolução bioestratigráfica por ostracodes em seções riftes continentais brasileiras é excelente e, a despeito do caráter upostamente endêmico destes microorganismos, é possível correlacionarmos os diferentes arcabouços biocronoestratigráficos do eocretáceo entre bacias tão distantes quanto o Recôncavo e Potiguar, ou e Sergipe-Alagoas (relatório interno de Picarelli et al., 1993. Paralelamente, evoluiram os estudos de palinomorfos continentais (miósporos ou grãos de pólen e esporos, os quais, do ponto devista qualitativo (eventos de surgimento e extinção, não oferecem o refinamento bioestratigráfico alcançado pelos ostracodes.Entretanto, as análises permitiram, desde meados de 1950, correlações geológicas regionaisseguras para a

  2. New mono-organotin (IV) dithiocarbamate complexes

    Energy Technology Data Exchange (ETDEWEB)

    Muthalib, Amirah Faizah Abdul; Baba, Ibrahim [School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi (Malaysia)

    2014-09-03

    Eighteen new mono-organotin dithiocarbamate compounds derived each nine from methyltin(IV) and phenyltin(IV) reacted using in-situ method with various type of N-dialkylamine together with carbon disulphide with the ratio of 1:3:3. Elemental and gravimetric analysis showed that the general formula of these compounds were RSnCl[S{sub 2}CNR′R″]{sub 2} (R= Ph, CH{sub 3}, R′ = CH{sub 3}, C{sub 2}H{sub 5}, C{sub 7}H{sub 7} and R″ = C{sub 2}H{sub 5}, C{sub 6}H{sub 11}, iC{sub 3}H{sub 7}, C{sub 7}H{sub 7}). These compounds had been characterized by infrared spectroscopy, ultraviolet spectroscopy, {sup 1}H, {sup 13}C NMR spectroscopy and single crystal X-ray crystallography. The infrared spectra of these compounds showed three important peaks indicating the formation of dithiocarbamate compounds, ν(CN), ν(CS) and ν(Sn-S) band which present in the region of 1444–1519, 954–1098 and 318–349 cm{sup −1} respectively. The ultraviolet-visible spectra showed an absorption band for the π - π* transition of NCS group in the range of 253 – 259 nm due to the intramolecular charge transfer of the ligand. The {sup 13}C NMR spectra showed an important shift for δ(N{sup 13}CS{sub 2}) in the range of 196.8 – 201.9 ppm.. Single crystal X-ray diffraction studies showed three new structures with the general formula of PhSnCl[S{sub 2}CN(Et)(i−Pr)]{sub 2}, MeSnCl[S{sub 2}CN(Me)(Cy)]{sub 2} and MeSnCl[S{sub 2}CN(i−Pr)(CH{sub 2}Ph)]{sub 2}. All structures having a distorted octahedral geometry set by CClS{sub 4} donor atom from the two

  3. The Role of Dipeptidyl Peptidase IV in Lung Metastasis of Breast Cancer Cells

    Science.gov (United States)

    1999-05-01

    Our studies focused on (1) cloning and sequencing of wild-type endothelial DPP IV (wtDPP IV) and preparation of truncated DPP IV ( tDPP IV); (2...that was identical to hepatic DPP IV. Acid extraction of rat lung yielded a tDPP IV, which was an effective inhibitor of breast cancer cell adhesion to

  4. Generation IV international forum 2002 - remarks

    International Nuclear Information System (INIS)

    Abraham, S.

    2002-01-01

    Analyses and forecasts underscore the important role of nuclear power in energy supply in the 21st century. Important aspects in this respect are the conservation of fossil resources, the protection of the world's climate, and the continuity of supply. Present 1st and 2nd generation nuclear power plants ensure an economical and technically mature electricity supply. Advanced systems offering, e.g., higher efficiency of fuel utilization, simplified systems technology, and advanced safety characteristics, can make available additional benefits in using nuclear power. Upon an initiative of the U.S. Department of Energy (DOE), ten countries combine their efforts in developing such reactor concepts in the Generation IV International Forum (GIF). Argentina, Brazil, Canada, France, Japan, South Africa, South Korea, Switzerland, the United Kingdom, and the United States pursue the common objective in GIF to identify suitable nuclear power systems and promote their development up to the envisaged readiness for construction in 2030. Besides technical and economic questions of nuclear power generation, also other aspects must be considered with a view to the future use of nuclear power. The particularly relevant issues, such as the management of radioactive waste, the intensification of research and development, and international cooperation, have been taken up by the Bush administration at an early point in time and have been, or will be, incorporated in practical solutions, as in the case of the Yucca Mountain repository project. (orig.)

  5. LSPRAY-IV: A Lagrangian Spray Module

    Science.gov (United States)

    Raju, M. S.

    2012-01-01

    LSPRAY-IV is a Lagrangian spray solver developed for application with parallel computing and unstructured grids. It is designed to be massively parallel and could easily be coupled with any existing gas-phase flow and/or Monte Carlo Probability Density Function (PDF) solvers. The solver accommodates the use of an unstructured mesh with mixed elements of either triangular, quadrilateral, and/or tetrahedral type for the gas flow grid representation. It is mainly designed to predict the flow, thermal and transport properties of a rapidly vaporizing spray. Some important research areas covered as a part of the code development are: (1) the extension of combined CFD/scalar-Monte- Carlo-PDF method to spray modeling, (2) the multi-component liquid spray modeling, and (3) the assessment of various atomization models used in spray calculations. The current version contains the extension to the modeling of superheated sprays. The manual provides the user with an understanding of various models involved in the spray formulation, its code structure and solution algorithm, and various other issues related to parallelization and its coupling with other solvers.

  6. Perfis de consumo alcoolico entre pacientes da atencao primaria a saude e seu reconhecimento pelos profissionais de saude

    Directory of Open Access Journals (Sweden)

    Maira Lemos de Castro Taufick

    2014-02-01

    Full Text Available Neste estudo transversal verificaram-se os perfis de consumo alcoólico entre pacientes das Equipes de Saúde da Família (ESF em uma cidade do sudeste brasileiro, e o reconhecimento deste consumo pelos profissionais das ESF. Avaliaram-se 932 pacientes adultos entre novembro de 2010 e novembro de 2011. Entre todos, 17,5% faziam consumo de risco (AUDIT ≥ 8, que foi mais frequente em homens, entre as pessoas mais jovens e aqueles sem doenças crônicas. O questionário CAGE foi positivo em 98 (10,5% pacientes, sendo mais frequente em homens. Homens, pessoas com idades ≥ 55 anos, com doenças crônicas ou com consumo alcoólico mais grave foram mais frequentemente questionadas sobre o uso do álcool (438/932; 47,8%. Homens, pessoas de 35 a 54 anos ou com consumo alcoólico mais grave foram mais frequentemente reconhecidos como alcoolistas (22/175; 12,6%. Conclui-se que o consumo do álcool é frequente entre os pacientes atendidos pelas ESF, é pouco reconhecido pelos profissionais e a minoria dos alcoolistas é orientada quanto aos seus riscos.

  7. Estimulação cognitiva para idoso com Doença de Alzheimer realizada pelo cuidador

    Directory of Open Access Journals (Sweden)

    Thiara Joanna Peçanha da Cruz

    2015-06-01

    Full Text Available RESUMOObjetivo:conhecer a influência da estimulação cognitiva no domicílio, realizada pelo cuidador de idosos com Doença de Alzheimer.Método:realizado estudo de caso com cinco idosos com Doença de Alzheimer e seus cuidadores. As etapas de desenvolvimento da pesquisa foram: orientação aos cuidadores, seleção dos idosos e cuidadores; abordagem dos sujeitos no domicílio, encontros semanais e reaplicação dos testes para acompanhamento da função cognitiva do idoso.Resultados:no período de três meses foi possível identifi car melhora da cognição, verificada pelo resultado do Mini Exame do Estado Mental (MEEM. Os demais testes (KATZ, LAWTON, TDR e TFV mantiveram os escores iniciais.Conclusões:esta estratégia pode ser considerada uma tecnologia leve do cuidado de enfermagem para idosos com demência. Quando o cuidador realiza este cuidado, após o suporte do enfermeiro, sente-se menos ansioso e com maior compreensão da doença.

  8. Aplicabilidade das ações preconizadas pelo método canguru Share applicability recommended by kangaroo method

    Directory of Open Access Journals (Sweden)

    Alessandra Patricia Stelmak

    2017-07-01

    Full Text Available Objetivo:Identificar a prevalência das ações preconizadas pelo MC, na prática de cuidados ao recém-nascido pré-termo e/ou baixo peso, pela equipe de enfermagem de uma unidade de terapia intensiva neonatal que é referência estadual para o MC. Método: Pesquisa descritiva quantitativa, realizada através da aplicação de um questionário estruturado com 37 profissionais de enfermagem de nível médio, em Unidade de Terapia Intensiva Neonatal, de fevereiro a abril de 2014. Resultados: o acolhimento, o incentivo ao toque, o aleitamento materno e o controle ambiental são as ações mais executadas pela equipe, apresentando cada uma 97% de aplicabilidade prática, e como ações menos executadas, a troca de fralda em decúbito lateral (83%, e o banho envolto em cueiros (58%. Conclusão: Esta equipe realiza as ações humanizadas de cuidado conforme preconizados pelo MC, e compreende a importância desses cuidados para o desenvolvimento infantil dos recém-nascidos. Existe necessidade de processo de educação permanente em serviço.

  9. 1. IV toimus Kõrvekülas... / Hele Ellermaa

    Index Scriptorium Estoniae

    Ellermaa, Hele

    2005-01-01

    Toimus Hans Christian Anderseni 200. sünniaastapäevale ja rahvusvahelisele lasteraamatupäevale pühendatud IV Tartumaa lasteraamatupäev. Konkursile laekus 172 joonistust, 14 kirjatööd ja 73 paberlõikepilti. Laste tööde näitus on avatud Kõrveküla raamatukogus kuni 16. IV

  10. 78 FR 45592 - DeltaPoint Capital IV, LP;

    Science.gov (United States)

    2013-07-29

    ..., Suite 160, Pittsford, NY 14534. The financing was contemplated for working capital. The financing is... SMALL BUSINESS ADMINISTRATION [License No. 02/02-0662] DeltaPoint Capital IV, LP; Notice Seeking... given that DeltaPoint Capital IV, L.P., 45 East Avenue, 6th Floor, Rochester, NY 14604, Federal...

  11. ADHD Rating Scale-IV: Checklists, Norms, and Clinical Interpretation

    Science.gov (United States)

    Pappas, Danielle

    2006-01-01

    This article reviews the "ADHD Rating Scale-IV: Checklist, norms, and clinical interpretation," is a norm-referenced checklist that measures the symptoms of attention deficit/hyperactivity disorder (ADHD) according to the diagnostic criteria of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV; American Psychiatric…

  12. Equilibrium between Different Coordination Geometries in Oxidovanadium(IV) Complexes

    Science.gov (United States)

    Ugone, Valeria; Garribba, Eugenio; Micera, Giovanni; Sanna, Daniele

    2015-01-01

    In this laboratory activity, the equilibrium between square pyramidal and octahedral V(IV)O[superscript 2+] complexes is described. We propose a set of experiments to synthesize and characterize two types of V(IV)O[superscript 2+] complexes. The experiment allows great flexibility and may be effectively used at a variety of levels and the activity…

  13. Synthesis and Characterization of Organ Tin (IV) Complexes ...

    African Journals Online (AJOL)

    User

    2012-08-21

    Aug 21, 2012 ... the reference drug. In addition, within the diorganotin(IV) complexes, monomeric type (3) exhibited a slightly better activity as compared to the organodistannoxane dimer types (1 and 4). Key words: Preliminary in vitro cytotoxic assay, organotin(IV) complexes, comparison study. INTRODUCTION. Although ...

  14. Experimental facilities for Generation IV reactors research

    International Nuclear Information System (INIS)

    Krecanova, E.; Di Gabriele, F.; Berka, J.; Zychova, M.; Macak, J.; Vojacek, A.

    2013-06-01

    Centrum Vyzkumu Rez (CVR) is research and development Company situated in Czech Republic and member of the UJV group. One of its major fields is material research for Generation IV reactor concepts, especially supercritical water-cooled reactor (SCWR), very high temperature/gas-cooled fast reactor (VHTR/GFR) and lead-cooled fast reactor (LFR). The CVR is equipped by and is building unique experimental facilities which simulate the environment in the active zones of these reactor concepts and enable to pre-qualify and to select proper constructional materials for the most stressed components of the facility (cladding, vessel, piping). New infrastructure is founded within the Sustainable Energy project focused on implementation the Generation IV and fusion experimental facilities. The research of SCWR concept is divided to research and development of the constructional materials ensured by SuperCritical Water Loop (SCWL) and fuel components research on Fuel Qualification Test loop (SCWL-FQT). SCWL provides environment of the primary circuits of European SCWR, pressure 25 MPa, temperature 600 deg. C and its major purpose is to simulate behavior of the primary medium and candidate constructional materials. On-line monitoring system is included to collect the operational data relevant to experiment and its evaluation (pH, conductivity, chemical species concentration). SCWL-FQT is facility focused on the behavior of cladding material and fuel at the conditions of so-called preheater, the first pass of the medium through the fuel (in case of European SCWR concept). The conditions are 450 deg. C and 25 MPa. SCWL-FQT is unique facility enabling research of the shortened fuel rods. VHTR/GFR research covers material testing and also cleaning methods of the medium in primary circuit. The High Temperature Helium Loop (HTHL) enables exposure of materials and simulates the VHTR/GFR core environment to analyze the behavior of medium, especially in presence of organic compounds and

  15. Thiocyanato species of uranium(IV)

    International Nuclear Information System (INIS)

    Loyson, P.L.R.

    1974-12-01

    The aim of this thesis was to study the system U +4 /ClO 4 - /NCS - /HMPA/ - Solvent. This was done by means of various physical chemical methods. Spectrophotometric and conductometric evidence indicated that the following are the important species, which exist in acetone solution: (U(ClO 4 ) 3 .3acetone) + , (U(NCS) 3 .5acetone) + , (U 2 (NCS) 9 .6acetone) - , (U(NCS) 3 .2HMPA.3acetone) + , (U(NCS) 5 .2HMPA) - , (U(ClO 4 ) 3 .3HMPA) + , (U(NCS).5HMPA) +3 , (U(NCS) 2 .4HMPA) +2 and (U(NCS) 3 .3HMPA) + . The replacement of the large ClO 4 - ion by the much smaller NCS - anion results in a change in coordination of the U +4 , from six to eight. The formation of the species (U(NCS) 5 .2HMPA) - wasalso suggested by infrared studies and solubility determinations. The effect of a polar solvent on U(NCS) 4 .4HMPA was also studied, which indicated that, on solvation in methyl cyanide, U(NCS) 4 .4HMPA loses bound HMPA molecules. The ultimate goal of this project, i.e. the determination of the successive stability constants of the uranium(IV)thiocyanato complexes in acetone, was not reached, however, due to limitations of the computer program used. A qualitative treatment revealed that the stability of (U(NCS) 3 .5acetone) + , in acetone, is of the same order of magnitude as that of Co(NCS) 3 - ; similarly the species (U 2 (NCS) 9 .6acetone) - seems to be as stable as C0(NCS) 4 =. It was also indicated that excess U +4 cannot remove all bound NCS - from Co +2 . Finally the thiocyanato complexes of U +4 , relative to those of CO +2 , seem to be more stable in methyl cyanide, a N-donor solvent, than in acetone, an O-donor solvent

  16. Validation of practical notebook Morphophysiology IV

    Directory of Open Access Journals (Sweden)

    Rafael Capote Martínez

    2012-03-01

    Full Text Available Since the implementation of the Morphophysiology, 2007-2008 academic year, has shown a low achievement and motivation of students in individual and independent study. Most of them do not possess the skills or general intellectual development freelancing enough to assimilate the great independence required by this new learning model. Therefore, it was decided to introduce a new medium of instruction notebook handy morphophysiology IV which is an orientation guide for individual and independent study of students at the same time improves the management process of the educational process, whose usefulness is intended to validate. They surveyed 345 (94.8% who choose different specialties including Physical Culture. It was used in the survey, the questionnaire technique questions and answers, the closed first, and combining the direct and indirect, with some filter. This study was conducted through the comparison test of proportions between independent samples, using the Microstat statistical system, with a significance level of α = 0.05 (P <0.05. The 97.33% and 95.6% of students classified as necessary and useful respectively, the Practical Notebook, based on teaching assignments. The 67.84% of students suggests that the effectiveness of Practical Notebook is achieved when it is developed in a coordinated manner from staff student effort, reflections set out in groups or teams of study and the guiding role and facilitator professor, where it appears that forces develop participatory techniques. It is concluded that the Practical Notebook, acts as a methodological guide guiding, and developed through teaching assignments by students during individual and independent study, represents an effective tool for the learning process, contributing significantly to the improvement morphophysiology the curricular discipline.

  17. Common molecular determinants of tarantula huwentoxin-IV inhibition of Na+ channel voltage sensors in domains II and IV.

    Science.gov (United States)

    Xiao, Yucheng; Jackson, James O; Liang, Songping; Cummins, Theodore R

    2011-08-05

    The voltage sensors of domains II and IV of sodium channels are important determinants of activation and inactivation, respectively. Animal toxins that alter electrophysiological excitability of muscles and neurons often modify sodium channel activation by selectively interacting with domain II and inactivation by selectively interacting with domain IV. This suggests that there may be substantial differences between the toxin-binding sites in these two important domains. Here we explore the ability of the tarantula huwentoxin-IV (HWTX-IV) to inhibit the activity of the domain II and IV voltage sensors. HWTX-IV is specific for domain II, and we identify five residues in the S1-S2 (Glu-753) and S3-S4 (Glu-811, Leu-814, Asp-816, and Glu-818) regions of domain II that are crucial for inhibition of activation by HWTX-IV. These data indicate that a single residue in the S3-S4 linker (Glu-818 in hNav1.7) is crucial for allowing HWTX-IV to interact with the other key residues and trap the voltage sensor in the closed configuration. Mutagenesis analysis indicates that the five corresponding residues in domain IV are all critical for endowing HWTX-IV with the ability to inhibit fast inactivation. Our data suggest that the toxin-binding motif in domain II is conserved in domain IV. Increasing our understanding of the molecular determinants of toxin interactions with voltage-gated sodium channels may permit development of enhanced isoform-specific voltage-gating modifiers.

  18. An Integrated Safety Assessment Methodology for Generation IV Nuclear Systems

    International Nuclear Information System (INIS)

    Leahy, Timothy J.

    2010-01-01

    The Generation IV International Forum (GIF) Risk and Safety Working Group (RSWG) was created to develop an effective approach for the safety of Generation IV advanced nuclear energy systems. Early work of the RSWG focused on defining a safety philosophy founded on lessons learned from current and prior generations of nuclear technologies, and on identifying technology characteristics that may help achieve Generation IV safety goals. More recent RSWG work has focused on the definition of an integrated safety assessment methodology for evaluating the safety of Generation IV systems. The methodology, tentatively called ISAM, is an integrated 'toolkit' consisting of analytical techniques that are available and matched to appropriate stages of Generation IV system concept development. The integrated methodology is intended to yield safety-related insights that help actively drive the evolving design throughout the technology development cycle, potentially resulting in enhanced safety, reduced costs, and shortened development time.

  19. Testing and economical evaluation of U(IV) in Purex

    International Nuclear Information System (INIS)

    Hoisington, J.E.; Hsu, T.C.

    1983-01-01

    The use of uranous nitrate, U(IV), as a plutonium reductant in the Purex solvent extraction process could significantly reduce the waste generation at the Savannah River Plant. The current reductant is a ferrous sulfamate (FS)/hydroxylamine nitrate (HAN) mixture. The iron and sulfate in the FS are major contributors to waste generation. The U(IV) reductant oxidizes to U(VI) producing no waste. The Savannah River Laboratory has developed an efficient electrochemical cell for U(IV) production and has demonstrated the effectiveness of U(IV) as a plutonium reductant. Plant tests and economic analyses are currently being conducted to determine the cost effectiveness of U(IV) implementation. The results of recent studies are presented

  20. Crystal structure of ammonium divanadium(IV,V tellurium(IV heptaoxide

    Directory of Open Access Journals (Sweden)

    William T. A. Harrison

    2014-07-01

    Full Text Available The polyhedral building blocks of the layered inorganic network in the mixed-valence title compound, (NH4(VIVO2(VVO2(TeO3, are vertex-sharing VVO4 tetrahedra, distorted VIVO6 octahedra and TeO3 pyramids, which are linked by V—O—V and V—O—Te bonds, forming double layers lying parallel to (100. The presumed TeIV lone-pairs of electrons appear to be directed inwards into cavities in the double layers. The charge-balancing ammonium cations lie between the layers and probably interact with them via N—H...O hydrogen bonds.

  1. Plasma metabolism of apolipoprotein A-IV in humans

    International Nuclear Information System (INIS)

    Ghiselli, G.; Krishnan, S.; Beigel, Y.; Gotto, A.M. Jr.

    1986-01-01

    As assessed by molecular sieve chromatography and quantitation by a specific radioimmunoassay, apoA-IV is associated in plasma with the triglyceride-rich lipoproteins, to a high density lipoprotein (HDL) subfraction of smaller size than HDL3, and to the plasma lipoprotein-free fraction (LFF). In this study, the turnover of apoA-IV associated to the triglyceride-rich lipoproteins, HDL and LFF was investigated in vivo in normal volunteers. Human apoA-IV isolated from the thoracic duct lymph chylomicrons was radioiodinated and incubated with plasma withdrawn from normal volunteers after a fatty meal. Radioiodinated apoA-IV-labeled triglyceride-rich lipoproteins, HDL, and LFF were then isolated by chromatography on an AcA 34 column. Shortly after the injection of the radioiodinated apoA-IV-labeled triglyceride-rich lipoproteins, most of the radioactivity could be recovered in the HDL and LFF column fractions. On the other hand, when radioiodinated apoA-IV-labeled HDL or LFF were injected, the radioactivity remained with the originally injected fractions at all times. The residence time in plasma of 125 I-labeled apoA-IV, when injected in association with HDL or LFF, was 1.61 and 0.55 days, respectively. When 125 I-labeled apoA-IV was injected as a free protein, the radioactivity distributed rapidly among the three plasma pools in proportion to their mass. The overall fractional catabolic rate of apoA-IV in plasma was measured in the three normal subjects and averaged 1.56 pools per day. The mean degradation rate of apoA-IV was 8.69 mg/kg X day

  2. IUE observations of interstellar Si IV and C IV lines observed in the spectra of Wolf-Rayet stars

    International Nuclear Information System (INIS)

    Smith, L.J.; Willis, A.J.; Wilson, R.

    1980-01-01

    Recent IUE observations of Wolf-Rayet stars show narrow absorption lines in the highly ionized species of Si IV and C IV. The strengths of these 'interstellar' Si IV and C IV lines observed in the spectra of 10 WR stars and two other early-type stars are compared. Of the WR sample, six stars exhibit very strong Si IV and C IV lines (Wsub(lambda) approximately 0.3 to 0.5 A) whilst the other four stars show much weaker lines (Wsub(lambda) approximately 0.1 A). There is no correlation between the strengths of these lines with either stellar distance or colour excess. The weaker absorptions may arise in the individual stellar H II regions, the observed strengths being consistent with those expected for stars with Tsub(eff) = 30 000 K. Five of the other stars which exhibit very strong absorptions lie in the line of sight to active interstellar regions (Cygnus and Carina nebulae) and it is considered probable that, in addition to their H II region components, the bulk of the strong Si IV and C IV absorptions originate in hot gas associated with these active regions. In the case of the WN5 star HD 50896 violet-displaced components are observed in the interstellar lines of low ionization species. These are thought to be produced in the ring nebula S308 surrounding HD 50896. (author)

  3. Resistência à corrosão de junta dissimilar soldada pelo processo TIG composta pelos aços inoxidáveis AISI 316L e AISI 444

    Directory of Open Access Journals (Sweden)

    Luis Henrique Guilherme

    2014-03-01

    Full Text Available O aço inoxidável AISI 444 tornou-se uma opção para substituir a liga AISI 316L devido ao seu menor custo e satisfatória resistência à corrosão. Entretanto, o uso da liga AISI 444 no feixe tubular de trocadores de calor acarreta na soldagem de uma junta dissimilar. O presente estudo teve por objetivo avaliar a resistência à corrosão da junta tubo-espelho soldada pelo processo TIG composta pelas ligas AISI 316L e AISI 444. A manufatura das amostras consistiu em replicar o projeto da junta tubo-espelho de trocadores de calor. Realizou-se em juntas soldadas ensaios de sensitização, perda de massa por imersão desde a temperatura ambiente até 90 ºC, e ensaios eletroquímicos de polarização potenciodinâmica nos eletrólitos 0,5 mol/L de HCl e 0,5 mol/L de H2SO4. Os resultados mostraram que a junta dissimilar sofreu corrosão galvânica com maior degradação na zona afetada pelo calor (ZAC do tubo AISI 444. Porém, os mecanismos de corrosão localizada (pite e intergranular demonstraram ser mais ativos para a liga AISI 316L. Conclui-se que a junta dissimilar apresentou melhor resistência à corrosão do que a junta soldada composta unicamente pela liga AISI 316L em temperaturas de até 70 ºC, conforme as condições observadas neste trabalho.

  4. Malformações detectadas pelo ultrassom abdominal em crianças com cardiopatia congênita

    Directory of Open Access Journals (Sweden)

    Rosana Cardoso Manique Rosa

    Full Text Available FUNDAMENTO: Malformações extracardíacas podem estar presentes em pacientes com cardiopatia congênita (CC, trazendo maior risco de comorbidade e mortalidade. OBJETIVO: Verificar a frequência e os tipos de anormalidades abdominais detectadas em crianças com e sem CC através do ultrassom abdominal (USA, comparar os pacientes quanto a seus achados dismórficos/citogenéticos e realizar uma estimativa do custo-benefício da triagem pelo USA. MÉTODOS: Foi realizado um estudo transversal com controle. Os casos consistiram de pacientes com CC admitidos pela primeira vez em uma unidade de terapia intensiva pediátrica; os controles consistiram de crianças sem CC submetidas ao USA no hospital logo após cada caso. Todos os pacientes com CC foram submetidos ao USA, ao cariótipo de alta resolução e à hibridização in situ fluorescente (FISH para microdeleção 22q11.2. RESULTADOS: USA identificou anormalidades clinicamente significativas em 12,2% dos casos e em 5,2% dos controles (p = 0,009, com um poder de significância de 76,6%. A maioria das malformações com significado clínico foi de anomalias renais (10,4% nos casos e 4,9% nos controles, p = 0,034. No Brasil, o custo de um exame de USA pelo Sistema Único de Saúde é de 21 dólares. Uma vez que anormalidades clinicamente significativas foram observadas em um a cada 8,2 pacientes com CC, o custo para identificar uma criança afetada foi de 176 dólares. CONCLUSÃO: Pacientes com CC apresentam uma frequência significativa de anomalias detectadas pelo USA, um método diagnóstico barato e não invasivo, com boa sensibilidade. O custo da triagem para esses defeitos é consideravelmente menor que o custo para tratar as complicações do diagnóstico tardio de malformações abdominais, como a doença renal.

  5. Studies on Th(IV) and Zr(IV) complexes of oxygen donor ligands

    International Nuclear Information System (INIS)

    Agarwal, R.K.; Srivastava, M.; Srivastava, A.K.

    1981-01-01

    In recent years a large number of complexes of amine N-oxides with a wide variety of metal salts have been isolated and characterized. Less attention has been paid to the aromatic amine N-oxides complexes with Th(IV) thiocyanate. In the present communication studies are reported on Th(IV) thiocyanate complexes of pyridine N-oxide (PyO), quinoline N-oxide (QO), isoquinoline N-oxide (IsqO), 2-picoline N-oxide (2-picO), 3-picoline N-oxide (3-picO) and 4-picoline N-oxide (4-picO) and comparisons are made with the existing complexes of 2,6-lutidine N-oxide (LNO), 2, 2'bipyridine N-N'-dioxide (BipyO 2 ), mono N-oxides of 2,2'-bipyridine (BipyNO) and 1,10-phenanthroline (PhenNO) and 1, 10-phenanthroline N-N'-dioxide (PhenO 2 ). The analytical data correspond to the composition Th(NCS) 4 .4L. The molar conductance of all the complexes in nitrobenzene in the range 2.5 to 4.5 Ω -1 cm 2 mol -1 indicate them to be non-electrolytes. The results of IR spectroscopy and thermogravimetry are given and discussed. (author)

  6. Synthetic Strategies for the Synthesis of Ternary Uranium(IV) and Thorium(IV) Fluorides.

    Science.gov (United States)

    Klepov, Vladislav V; Felder, Justin B; Zur Loye, Hans-Conrad

    2018-04-10

    A series of new U(IV) and Th(IV) fluorides, Na 7 U 6 F 31 (1), NaUF 5 (2), NaU 2 F 9 (3), KTh 2 F 9 (4), NaTh 2 F 9 (5), (H 3 O)Th 3 F 13 (6), and (H 3 O)U 3 F 13 (7), was obtained using hydrothermal and low-temperature flux methods. Mild hydrothermal reactions with uranyl acetate as a precursor yielded 1, 7, and the monoclinic polymorph of NaU 2 F 9 , whereas direct reactions between UF 4 and NaF led to the formation of 2 and orthorhombic NaU 2 F 9 (3). This highlights an unexpected difference in reaction products when different starting uranium sources are used. All seven compounds were characterized by single-crystal X-ray diffraction, and their structures are compared on the basis of cation topology, revealing a close topological resemblance between fluorides on the basis of the layers observed in NaUF 5 (H 2 O). Phase-pure samples of 1, 2, and both polymorphs of NaU 2 F 9 were obtained, and their spectroscopic and magnetic properties were measured. The UV-vis data are dominated by the presence of U 4+ cations and agree well with the electronic transitions. Effective magnetic moments of the studied compounds were found to range from 3.08 to 3.59 μ B .

  7. Generation IV nuclear reactors: Current status and future prospects

    International Nuclear Information System (INIS)

    Locatelli, Giorgio; Mancini, Mauro; Todeschini, Nicola

    2013-01-01

    Generation IV nuclear power plants (GEN IV NPPs) are supposed to become, in many countries, an important source of base load power in the middle–long term (2030–2050). Nowadays there are many designs of these NPPs but for political, strategic and economic reasons only few of them will be deployed. International literature proposes many papers and reports dealing with GEN IV NPPs, but there is an evident difference in the types and structures of the information and a general unbiased overview is missing. This paper fills the gap, presenting the state-of-the-art for GEN IV NPPs technologies (VHTR, SFR, SCWR, GFR, LFR and MSR) providing a comprehensive literature review of the different designs, discussing the major R and D challenges and comparing them with other advanced technologies available for the middle- and long-term energy market. The result of this research shows that the possible applications for GEN IV technologies are wider than current NPPs. The economics of some GEN IV NPPs is similar to actual NPPs but the “carbon cost” for fossil-fired power plants would increase the relative valuation. However, GEN IV NPPs still require substantial R and D effort, preventing short-term commercial adoption. - Highlights: • Generation IV reactors are the middle–long term technology for nuclear energy. • This paper provides an overview and a taxonomy for the designs under consideration. • R and D efforts are in the material, heat exchangers, power conversion unit and fuel. • The life cycle costs are competitive with other innovative technologies. • The hydrogen economy will foster the development of Generation IV reactors

  8. Dissimilatory Fe(III) and Mn(IV) reduction.

    Science.gov (United States)

    Lovley, D R

    1991-06-01

    The oxidation of organic matter coupled to the reduction of Fe(III) or Mn(IV) is one of the most important biogeochemical reactions in aquatic sediments, soils, and groundwater. This process, which may have been the first globally significant mechanism for the oxidation of organic matter to carbon dioxide, plays an important role in the oxidation of natural and contaminant organic compounds in a variety of environments and contributes to other phenomena of widespread significance such as the release of metals and nutrients into water supplies, the magnetization of sediments, and the corrosion of metal. Until recently, much of the Fe(III) and Mn(IV) reduction in sedimentary environments was considered to be the result of nonenzymatic processes. However, microorganisms which can effectively couple the oxidation of organic compounds to the reduction of Fe(III) or Mn(IV) have recently been discovered. With Fe(III) or Mn(IV) as the sole electron acceptor, these organisms can completely oxidize fatty acids, hydrogen, or a variety of monoaromatic compounds. This metabolism provides energy to support growth. Sugars and amino acids can be completely oxidized by the cooperative activity of fermentative microorganisms and hydrogen- and fatty-acid-oxidizing Fe(III) and Mn(IV) reducers. This provides a microbial mechanism for the oxidation of the complex assemblage of sedimentary organic matter in Fe(III)- or Mn(IV)-reducing environments. The available evidence indicates that this enzymatic reduction of Fe(III) or Mn(IV) accounts for most of the oxidation of organic matter coupled to reduction of Fe(III) and Mn(IV) in sedimentary environments. Little is known about the diversity and ecology of the microorganisms responsible for Fe(III) and Mn(IV) reduction, and only preliminary studies have been conducted on the physiology and biochemistry of this process.

  9. Movement disorders in 28 HIV-infected patients Distúrbios do movimento em 28 pacientes infectados pelo HIV

    Directory of Open Access Journals (Sweden)

    James Pitágoras de Mattos

    2002-09-01

    . Todos com hemicoréia/hemiballismo eram homens e estavam relacionados com toxoplasmose nos gânglios da base. Nos quatro pacientes com mioclonia, em dois era generalizada, relacionada, em um, com toxoplasmose e, em outro, com a encefalopatia pelo HIV; nos outros dois era de origem medular. Nos dois pacientes com painful legs and moving toes, ficou demonstrada a neuropatia axonal pela biópsia do nervo periférico. Toxoplasmose da gânglia basal estava relacionada com hemidistonia contralateral. No paciente com tremor de Holmes havia lesões no mesencéfalo e no cerebelo, secundárias à co-infecção pelo bacilo da tuberculose e pelo Toxoplasma gondii. Concluímos que diversos distúrbios do movimento podem ocorrer em pacientes infectados pelo HIV. Costumam estar relacionados às infecções oportunísticas, ao uso de certos medicamentos, às lesões com efeito de massa e, possivelmente, à ação direta ou indireta do HIV.

  10. Alterações anatomopatologicas da mucosa gastrica associadas a infecção pelo helicobacter pylori

    OpenAIRE

    Correa, Esther Buzaglo Dantas

    1996-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias da Saude Foram comparadas as alterações anátomo-patológicas observadas na mucosa gástrica (inflamação, atividade da gastrite, atrofia, metaplasia intestinal e folículos linfóides) de 64 pacientes portadores de infecção pelo Helicobacter pylori com as alterações presentes na mucosa de 20 pacientes sem infecção. Inflamação, atividade da gastrite e folículos linfóides foram mais freqüentes na mucosa de corpo e...

  11. Fatores de satisfação e insatisfação entre os pacientes assistidos pelo SUS

    Directory of Open Access Journals (Sweden)

    Sérgio Ribeiro dos Santos

    1999-03-01

    Full Text Available Este estudo foi desenvolvido com o propósito de identificar os fatores que causam satisfação ou insatisfação nos pacientes internos em hospitais conveniados com o Sistema Único de Saúde (SUS, com base na assistência prestada durante o período de internação. A amostra foi constituída de cento e setenta pacientes. Para a coleta de dados, utilizou-se um questionário com quarenta e sete questões fechadas. Os resultados obtidos revelaram diversos aspectos que comprometem a qualidade do serviço prestado, tais como: serviço médico, nutrição, enfermagem e o ambiente. Assim, conclui-se que há insatisfação nos pacientes em relação aos serviços oferecidos pelo SUS.

  12. PERSISTENCIA DEL ARCO AÓRTICO DERECHO EN PERRO SIN PELO DEL PERÚ – REPORTE DE UN CASO.

    OpenAIRE

    Grandez R., Ricardo; Bowler T., Brenda; Miguel de Priego G., Claudia; Yi A., Pedro; Torres P., Luis; Valencia L., Roberto

    2012-01-01

    Un canino de la raza Perro sin Pelo del Perú, de dos meses de edad, fue atendido con historia de regurgitación por un mes y pérdida progresiva de su condición corporal desde el destete. Al examen clínico presentó un estado de alerta y baja condición corporal. El paciente recibió tratamiento de sostén y se le realizó estudios imagenológicos, radiografía cervical, torácica y esofagografía, evidenciando una dilatación de esófago craneal al corazón. Se realizó la eutanasia a solicitud del propiet...

  13. A definição da estratégia empresarial pelos tomadores de decisão

    OpenAIRE

    Teixeira, Alexandre Andrade

    2002-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção. A pesquisa tem como objetivo descrever o processo de definição da estratégia de uma empresa estatal, com ênfase na análise do meio ambiente. Esta ênfase na análise do meio ambiente é devida à crença do autor que um dos principais estimuladores do comportamento empresarial advém da percepção do ambiente empresarial pelos tomadores de decisão da empresa. ...

  14. Sentidos e Processos Psicossociais envolvidos na Inclusão pelo Trabalho na Saúde Mental

    Directory of Open Access Journals (Sweden)

    Ramiz Candeloro Pedroso de Moraes

    Full Text Available Resumo As mudanças teóricas, políticas e sociais no campo da reabilitação psicossocial têm trazido novas possibilidades de investigação da prática. Neste artigo, investigamos os processos psicossociais que influenciam no trabalho solidário dos sujeitos da Saúde Mental, enfatizando cotidiano e sentidos. O método que utilizamos é orientado pela concepção de mundo da Psicologia Sócio-histórica, sendo uma pesquisa de epistemologia qualitativa. Realizamos um estudo de caso com inspiração etnográfica, por meio de entrevistas e observações participantes em uma cooperativa de reciclagem em Santos, Brasil. Os sujeitos entrevistados foram seis homens e quatro mulheres e, do total, oito são usuários dos serviços de Saúde Mental e dois são técnicos. A maioria tem mais de 50 anos, não completou o ensino fundamental e trabalha na cooperativa há mais de três anos. A análise pela Hermenêutica de Profundidade resultou que, entre complexas relações institucionais, os cooperados trazem sentidos positivos ao trabalho, seja pelo afeto, pelo retorno financeiro ou pelas reconfigurações familiares e sociais. Estas novas formas de sociabilidade vêm destruindo as barreiras da dialética exclusão/inclusão social e desmistificando o preconceito com o louco e o pobre. A não competição, aliada à participação social e uma cultura solidária, tende a potencializar estes projetos e seus sujeitos.

  15. Ensino-aprendizagem colaborativo mediado pelo Wiki do Moodle Collaborative learning-teaching mediated by Wiki Moodle

    Directory of Open Access Journals (Sweden)

    Ilse Abegg

    2010-12-01

    Full Text Available Mediados pela ferramenta Wiki do Moodle, desenvolvemos atividades a distância no Curso de Física da UFSM com o intuito de produzir um objeto escolar hipermídia tematizado pelo Tema Estruturador do Ensino de Física 2: Calor, Ambiente e usos de Energia (oriundo dos PCN+ , locando o diálogo-problematizador na transversalidade curricular "Meio Ambiente". Problematizamos esta atividade, caracterizada como uma produção colaborativa de hipermídia de divulgação científico-tecnológica, ao longo do período letivo da disciplina Didática I da Física da instância curricular integradora. O trabalho em grupo mediado pelo wiki do Moodle tem sido implementado através do PEA (Planejamento, Execução e Avaliação de forma cíclico-espiralada, estudando os casos. Os resultados indicam boa potencialidade da mediação tecnológica, no âmbito do diálogo-problematizador e empowerment, para este tipo de trabalho escolar colaborativo a distância.Through the wiki Moodle, we developed distance education activities in the Physics Course at UFSM, aiming at producing a hypermedia school subject related to the discipline Physics 2 structuring teaching theme: Heat, Environment and uses of Energy (coming from the PCN+, placing the problematic dialogue in the transversal theme "Environment". We designed this activity, described as a collaborative production of hypermedia for scientific-technological dissemination, over the period of school discipline Didactic I from the Physics Course. The working group mediated by the wiki Moodle has been implemented through the PEA (Planning, Execution, and Assessment. The results are positive on the use of technology mediation concerning problematic dialogue and empowerment, in this type of collaborative and distance education.

  16. A infância (recontada pelo fio da memória de psicoterapeutas septuagenários

    Directory of Open Access Journals (Sweden)

    Manoel Antônio dos Santos

    2014-06-01

    Full Text Available Este estudo teve por objetivo investigar os relatos de psicoterapeutas idosos sobre sua infância, buscando identificar, nas experiências de vida narradas, elementos relacionados às vivências familiares. O estudo é de caráter descritivo e exploratório, de abordagem qualitativa com a utilização do método clínico-qualitativo. Participaram cinco psicoterapeutas septuagenários, escolhidos pelo critério de prestígio desfrutado junto aos pares dentro e fora de instituições psicanalíticas. Foi utilizada entrevista aberta, audiogravada e, posteriormente, transcrita na íntegra. Os relatos foram submetidos à análise de conteúdo temática. Os dados foram interpretados com base no referencial teórico psicanalítico da transmissão psíquica. A análise resultou na construção de três categorias temáticas: (1 A família como rede simbólica que define a posição subjetiva de seus membros; (2 Entre a reverência e a rebeldia: a possibilidade de reinventar a tradição familiar; e (3 Construindo o pertencimento à cadeia geracional. Constatou-se que as narrativas dos psicoterapeutas sobre a infância se estruturaram em torno da vida familiar, pautada em hábitos e papéis familiares bem delimitados, com rígida divisão de funções entre pai, mãe e filhos. A posição ocupada pelo sujeito na fratria e a submissão a um mito fundador da linhagem são elementos que auxiliam na compreensão do engendramento de cada participante na cadeia intergeracional.

  17. The adsorption of 117Snm(IV)-EDTMP on collagen

    International Nuclear Information System (INIS)

    Yang Yuqing; Luo Shunzhong; Pu Manfei; Bing Wenzeng; He Jiaheng; Wang Guanquan

    2002-01-01

    The adsorption and desorption characteristics of 117 Sn m (IV)-EDTMP on collage are studied, and compared with that on HA. The results show that the effects of pH and temperature on adsorption of 117 Sn m (IV)-EDTMP on collagen are similar to those on HA, and that the adsorption equilibrium and adsorption model of 117 Sn m (IV)-EDTMP on collagen are completely different from those on HA; 117 Sm m -EDTMP absorbed on collagen are extremely stable and almost could not be desorbed with normal saline or EDTMP

  18. Crystal structure of ammonium octacyanomolybdate(IV) and rubidium octacyanomolybdate(IV)

    Energy Technology Data Exchange (ETDEWEB)

    Semenishin, D.I.; Glovyak, T.; Mys' kiv, M.G.

    1985-11-01

    The crystal structure of ammonium octacyanomolybdate(IV) and rubidium octacyanomolybdate(IV) has been determined by the single-crystal method on a Syntex P2/sub 1/ automatic diffractometer: ((NH/sub 4/)/sub 4/ Mo(CN)/sub 4/) 0.5H/sub 2/O (I) (space group Pma2, a = 15.550(3), b = 14.118(3), c = 7.438(1) A, Z = 4, R = 0.062) and Rb/sub 4/(Mo(CN)/sub 8/). 3H/sub 2/O (II) (space group P4/sub 1/2/sub 1/2, a = 9.300(10, c = 21.807(3) A, Z = 4, R = 0.065). The Mo atoms in structure I occupy two special positions (2(b) and 2(c)) and are each surrounded by eight CN ligands. The mean value of the Mo-C distances for Mo(1) is equal to 2.216 A, and the corresponding value for Mo(2) is 2.235 A. The mean Mo-N lengths are practically identical in both molybdenum anions and are equal to 3.353 A. The mean values of the C identical with N bond lengths in the Mo(1) and Mo(2) anions are 1.118 and 1.137 A, respectively. The MoCn angles vary from 175.0 to 178.4/sup 0/. The coordination sphere of the Mo(1) atom corresponds to a dodecahedron with a single twofold symmetry axis, and the coordination polyhedron of the Mo(2) atom in an antiprism of m symmetry. In structure II the Mo-C distances are within the 2.130-2.160-A range, and the Mo-N distances range from 3.290 to 3.307 A. The MoCN angles vary from 176.0 to 179.3/sup 0/, and the coordination polyhedron of (MoC/sub 8/) is a dodecahedron of 2 symmetry. The existence of two types of coordination of Mo in structure I is presently the only example among the structurally studied octahyanomolybdates(IV).

  19. A centralidade ocupada pelos sujeitos que participam das pesquisas do Serviço Social = The centrality occupied by the subjects who participate in researches from Social Work

    Directory of Open Access Journals (Sweden)

    Bourguignon, Jussara Ayres

    2008-01-01

    Full Text Available Com este texto temos por objetivo debater a posição ocupada pelos sujeitos participantes das pesquisas desenvolvidas pelo Serviço Social. Como fundamento, entendemos que a pesquisa é constitutiva e constituinte da prática profissional do Serviço Social, sendo determinada pela sua natureza interventiva e pela sua inserção histórica na divisão sociotécnica do trabalho. Este pressuposto tem como interface a preocupação com a centralidade que as pesquisas desenvolvidas pelo Serviço Social garantem aos sujeitos que delas são participantes, bem como com o alcance social dos seus resultados

  20. Aspectos histopatológicos das lesões renais em gatos experimentalmente infectados pelo vírus da imunodeficiência felina

    Directory of Open Access Journals (Sweden)

    Leonardo P. Mesquita

    2014-09-01

    Full Text Available A infecção pelo vírus da imunodeficiência felina (FIV em gatos domésticos é caracterizada por distúrbios imunológicos, que geralmente se manifestam tardiamente na doença. Semelhante à infecção pelo vírus da imunodeficiência humana (HIV em humanos, a infecção pelo FIV geralmente está associada a infecções oportunistas e ao desenvolvimento progressivo de nefropatia. Portanto, o objetivo do presente estudo foi avaliar as alterações histopatológicas em rins de 10 gatos experimentalmente infectados pelo FIV submetidos a eutanásia 60 meses após a inoculação viral. Nos rins de 100% dos gatos infectados pelo FIV foram visualizadas lesões glomerulares e tubulointersticiais. As lesões glomerulares eram caracterizadas principalmente por espessamento global ou segmentar da membrana basal glomerular (glomerulonefrite membranosa. Glomeruloesclerose e, em dois casos, proliferação de células epiteliais intraglomerulares (crescente glomerular, também foram observados. Nefrite intersticial linfoplasmocítica foi a alteração tubulointersticial mais frequente, visualizada em diferentes intensidades nos rins de 100% dos gatos. Os resultados do presente estudo demonstram que o tempo prolongado entre a infecção e a avaliação histopatológica pode ter sido decisivo para o surgimento das lesões renais em todos os gatos infectados pelo FIV e para o agravamento dessas lesões em alguns gatos.

  1. Level III and IV Ecoregions of the Continental United States

    Science.gov (United States)

    Information and downloadable maps and datasets for Level III and IV ecoregions of the continental United States. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.

  2. U(IV) fluorescence spectroscopy. A new speciation tool

    Energy Technology Data Exchange (ETDEWEB)

    Lehmann, Susanne; Brendler, Vinzenz [Helmholtz-Zentrum Dresden-Rossendorf e.V., Dresden (Germany). Surface Processes; Steudtner, Robin [Helmholtz-Zentrum Dresden-Rossendorf e.V., Dresden (Germany). Inst. of Resource Ecology

    2017-06-01

    We combined absorption and fluorescence spectroscopy to study the speciation of U(IV) in solution in concentrations down to 10{sup -6} M uranium. With our time-resolved laser-induced fluorescence setup we could determine the fluorescence decay time of U(IV) in perchloric as well as in chloric acid with 2.6 ± 0.3 ns at room temperature and 148.4 ± 6.5 ns at liquid nitrogen temperature. For the U(IV) sulfate system, we observed a bathochromic shift and a peak shape modification in the fluorescence spectra with increasing sulfate concentration in solution. Thus, the potential of U(IV) fluorescence for speciation analysis could be proven.

  3. Determination of U(IV) and hydrazine nitrate by volumetry

    International Nuclear Information System (INIS)

    Cao Xi; Wang Nanjie; Zhang Tao; Wang Lin; Guo Yuhua

    2006-01-01

    To be determined U(IV) and hydrazine nitrate in exist together, chromium (VI) and 1,10-phenanthroline is used individually as oxidation titrator and indicator for U(IV), and N-bromineimino and methyl red is used individually as oxidation titrator and indicator for hydrazine nitrate, U(IV) and hydrazine nitrate in the same sample is determined sequentially in the nitric acid by adjusting concentration of nitric acid. Results show that the precision is better than 2.0% when the mass concentration of U(IV) is ranged over 5.5-205 mg/mL; and the precision is better than 2.0% when the concentration of hydrazine nitrate is ranged over 0.05-1.0 mol/L. (authors)

  4. Report for 2012 from the Bordeaux IVS Analysis Center

    Science.gov (United States)

    Charlot, Patrick; Bellanger, Antoine; Bouffet, Romuald; Bourda, Geraldine; Collioud, Arnaud; Baudry, Alain

    2013-01-01

    This report summarizes the activities of the Bordeaux IVS Analysis Center during the year 2012. The work focused on (i) regular analysis of the IVS-R1 and IVS-R4 sessions with the GINS software package; (ii) systematic VLBI imaging of the RDV sessions and calculation of the corresponding source structure index and compactness values; (iii) investigation of the correlation between astrometric position instabilities and source structure variations; and (iv) continuation of our VLBI observational program to identify optically-bright radio sources suitable for the link with the future Gaia frame. Also of importance is the 11th European VLBI Network Symposium, which we organized last October in Bordeaux and which drew much attention from the European and International VLBI communities.

  5. Complexation of Plutonium (IV) With Sulfate At Variable Temperatures

    International Nuclear Information System (INIS)

    Y. Xia; J.I. Friese; D.A. Moore; P.P. Bachelor; L. Rao

    2006-01-01

    The complexation of plutonium(IV) with sulfate at variable temperatures has been investigated by solvent extraction method. A NaBrO 3 solution was used as holding oxidant to maintain the plutonium(IV) oxidation state throughout the experiments. The distribution ratio of Pu(IV) between the organic and aqueous phases was found to decrease as the concentrations of sulfate were increased. Stability constants of the 1:1 and 1:2 Pu(IV)-HSO 4 - complexes, dominant in the aqueous phase, were calculated from the effect of [HSO 4 - ] on the distribution ratio. The enthalpy and entropy of complexation were calculated from the stability constants at different temperatures using the Van't Hoff equation

  6. Mandelazo I as a reagent for Zr(IV) determination

    International Nuclear Information System (INIS)

    Rakha, T.H.; Filip, P.; Stefan, N.

    1984-01-01

    A spectrometric study of the reaction of the Zr(IV) ions with Mandelazo I was carried out. Absorption spectra revealed that the maximum absorption of the zirconium compound appears at a wavelength (316 nm) different from the maxima of the reagent (253 and 390 nm). Beer-Lambert law is followed for zirconium concentrations of the order of 8.8 x 10 -5 M (i.e. 8 μg Zr(IV)/mL). Possible interferences of ions such as Be(II), Cu(II), Zn(II), Al(III), Th(IV), U(VI), Mn(II), Fe(III), Co(II) and Ni(II) were investigated in connection with some masking agents such as SO 4 2- and C 2 O 4 2- . Also, the solid state Zr(IV)- Mandelazo I compound was prepared and characterized by nitrogen and thermogravimetric analyses

  7. [Mucolipidoses type IV in a patient with mapuche ancestry].

    Science.gov (United States)

    Hernández Ch, Marta; Méndez C, José Ignacio; Concha G, María José; Huete L, Isidro; González B, Sergio; Durán S, Gloria P

    2008-07-01

    We report a 7 year-old girl with mapuche ancestors, diagnosed as a cerebral palsy since infancy and on active rehabilitation. She acquired motor and cognitive skills at 3 years of age. At 5 years of age, a slow neurological deterioration started, associated to visual impairment. Optic atrophy was added to the typical neurological exam of ataxic cerebral palsy and the diagnosis was re-considered. Neuroimaging showed a slow and progressive atrophy of intracerebral structures and ultramicroscopy revealed intracytoplasmatic inclusions in conjunctiva and skin, compatible with mucolipidoses type IV (ML-IV). ML-IV must be included in the differential diagnosis of cerebral palsy associated with loss of acquired skills and progressive visual impairment. Electron microscopy of skin or conjunctiva is a useful diagnostic test. Suspicion of ML-IV must not be restricted to Ashkenazi Jewish population.

  8. Nordic Nuclear Materials Forum for Generation IV Reactors

    International Nuclear Information System (INIS)

    Anghel, C.; Penttilae, S.

    2010-03-01

    A network for material issues for Generation IV nuclear power has been initiated within the Nordic countries. The objectives of the Generation IV Nordic Nuclear Materials Forum (NOMAGE4) are to put the basis of a sustainable forum for Gen IV issues, especially focussing on fuels, cladding, structural materials and coolant interaction. Other issues include reactor physics, dynamics and diagnostics, core and fuel design. The present report summarizes the work performed during the year 2009. The efforts made include identification of organisations involved in Gen IV issues in the Nordic countries, update of the forum website, http://www.studsvik.se/GenerationIV, and investigation of capabilities for research within the area of Gen IV. Within the NOMAGE4 project a seminar on Generation IV Nuclear Energy Systems has been organized during 15-16th of October 2009. The aim of the seminar was to provide a forum for exchange of information, discussion on future research needs and networking of experts on Generation IV reactor concepts. As an outcome of the NOMAGE4, a few collaboration project proposals have been prepared/planned in 2009. The network was welcomed by the European Commission and was mentioned as an exemplary network with representatives from industries, universities, power companies and research institutes. NOMAGE4 has been invited to participate to the 'European Energy Research Alliance, EERA, workshop for nuclear structural materials' http://www.eera-set.eu/index.php?index=41 as external observers. Future plans include a new Nordic application for continuation of NOMAGE4 network. (author)

  9. Nordic Nuclear Materials Forum for Generation IV Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Anghel, C. (Studsvik Nuclear AB, Nykoeping (Sweden)); Penttilae, S. (Technical Research Centre of Finland, VTT (Finland))

    2010-03-15

    A network for material issues for Generation IV nuclear power has been initiated within the Nordic countries. The objectives of the Generation IV Nordic Nuclear Materials Forum (NOMAGE4) are to put the basis of a sustainable forum for Gen IV issues, especially focussing on fuels, cladding, structural materials and coolant interaction. Other issues include reactor physics, dynamics and diagnostics, core and fuel design. The present report summarizes the work performed during the year 2009. The efforts made include identification of organisations involved in Gen IV issues in the Nordic countries, update of the forum website, http://www.studsvik.se/GenerationIV, and investigation of capabilities for research within the area of Gen IV. Within the NOMAGE4 project a seminar on Generation IV Nuclear Energy Systems has been organized during 15-16th of October 2009. The aim of the seminar was to provide a forum for exchange of information, discussion on future research needs and networking of experts on Generation IV reactor concepts. As an outcome of the NOMAGE4, a few collaboration project proposals have been prepared/planned in 2009. The network was welcomed by the European Commission and was mentioned as an exemplary network with representatives from industries, universities, power companies and research institutes. NOMAGE4 has been invited to participate to the 'European Energy Research Alliance, EERA, workshop for nuclear structural materials' http://www.eera-set.eu/index.php?index=41 as external observers. Future plans include a new Nordic application for continuation of NOMAGE4 network. (author)

  10. Two-stage precipitation of neptunium (IV) oxalate

    International Nuclear Information System (INIS)

    Luerkens, D.W.

    1983-07-01

    Neptunium (IV) oxalate was precipitated using a two-stage precipitation system. A series of precipitation experiments was used to identify the significant process variables affecting precipitate characteristics. Process variables tested were input concentrations, solubility conditions in the first stage precipitator, precipitation temperatures, and residence time in the first stage precipitator. A procedure has been demonstrated that produces neptunium (IV) oxalate particles that filter well and readily calcine to the oxide

  11. ANALISIS DE LOS MECANISMOS INVOLUCRADOS EN LA LOCALIZACION ASIMETRICA DE TPRP1 Y ATPRP3 EN EL PELO RADICULAR DE ARABIDOPSIS THALIANA

    OpenAIRE

    RODRIGUEZ FURLAN, CECILIA

    2012-01-01

    Las proteínas ricas en prolinas (PRPs) son proteínas estructurales involucradas en el ensamblaje de la pared celular. En Arabidopsis dos miembros de esta familia de genes, ATPRP1 y ATPRP3, se expresan específicamente en células de pelo radicular. Los pelos radiculares elongan mediante crecimiento por el ápice a partir de células epidermales especializadas denominadas tricoblastos. El crecimiento por el ápice involucra la secreción polarizada de los materiales necesarios para formar la memb...

  12. Espíritos cheios de bichos: A fauna nas viagens de Louis Agassiz e Richard Francis Burton pelo Brasil oitocentista

    Directory of Open Access Journals (Sweden)

    Janaina Zito Losada

    2015-04-01

    Full Text Available O Brasil do século XIX foi alvo de inúmeras viagens realizadas por cientistas estrangeiros. O objetivo deste artigo é analisar as impressões sobre a fauna brasileira presentes nos relatos das viagens realizadas pelo naturalista suíço Louis Agassiz, em 1865, e pelo explorador inglês Richard Francis Burton, em 1868. Destes relatos privilegiam-se as descrições do meio natural de diferentes regiões brasileiras e das particularidades da fauna silvestre por eles encontrada.

  13. Degradation of type IV collagen by neoplastic human skin fibroblasts

    International Nuclear Information System (INIS)

    Sheela, S.; Barrett, J.C.

    1985-01-01

    An assay for the degradation of type IV (basement membrane) collagen was developed as a biochemical marker for neoplastic cells from chemically transformed human skin fibroblasts. Type IV collagen was isolated from basement membrane of Syrian hamster lung and type I collagen was isolated from rat tails; the collagens were radioactively labelled by reductive alkylation. The abilities of normal (KD) and chemically transformed (Hut-11A) human skin fibroblasts to degrade the collagens were studied. A cell-associated assay was performed by growing either normal or transformed cells in the presence of radioactively labelled type IV collagen and measuring the released soluble peptides in the medium. This assay also demonstrated that KD cells failed to synthesize an activity capable of degrading type IV collagen whereas Hut-11A cells degraded type IV collagen in a linear manner for up to 4 h. Human serum at very low concentrations, EDTA and L-cysteine inhibited the enzyme activity, whereas protease inhibitors like phenylmethyl sulfonyl fluoride, N-ethyl maleimide or soybean trypsin inhibitor did not inhibit the enzyme from Hut-11A cells. These results suggest that the ability to degrade specifically type IV collagen may be an important marker for neoplastic human fibroblasts and supports a role for this collagenase in tumor cell invasion

  14. Dipeptidyl peptidase IV in two human glioma cell lines

    Directory of Open Access Journals (Sweden)

    A Sedo

    2009-12-01

    Full Text Available There is growing evidence that dipeptidyl peptidase IV [DPP-IV, EC 3.4.14.5] takes part in the metabolism of biologically active peptides participating in the regulation of growth and transformation of glial cells. However, the knowledge on the DPP-IV expression in human glial and glioma cells is still very limited. In this study, using histochemical and biochemical techniques, the DPP-IV activity was demonstrated in two commercially available human glioma cell lines of different transformation degree, as represented by U373 astrocytoma (Grade III and U87 glioblastoma multiforme (Grade IV lines. Higher total activity of the enzyme, as well as its preferential localisation in the plasma membrane, was observed in U87 cells. Compared to U373 population, U87 cells were morphologically more pleiomorphic, they were cycling at lower rate and expressing less Glial Fibrillary Acidic Protein. The data revealed positive correlation between the degree of transformation of cells and activity of DPP-IV. Great difference in expression of this enzyme, together with the phenotypic differences of cells, makes these lines a suitable standard model for further 57 studies of function of this enzyme in human glioma cells.

  15. DSM-IV: a nosology sold before its time?

    Science.gov (United States)

    Zimmerman, M; Jampala, V C; Sierles, F S; Taylor, M A

    1991-04-01

    The purpose of this study was to determine whether American psychiatrists believe that DSM-IV is being published too soon after DSM-III-R. The authors conducted a mail survey of the attitudes of practicing psychiatrists (N = 454), residency program directors (N = 128), residents (N = 1,331), and researchers (N = 196) toward the scheduled publication of DSM-IV in the early 1990s. They found that the majority of all four groups believed that DSM-IV is being published prematurely. In contrast to respondents who believed that the timing of DSM-IV is appropriate, those who indicated that it is being published too soon had more recently completed their residency training and also believed that DSM-III-R was published prematurely. There was no association between the psychiatrists' responses and their theoretical orientation, Board certification status, ownership of the DSM manuals, the length of time they had used DSM-III, and the diagnostic manual (DSM-III or DSM-III-R) they were currently using. The belief that DSM-IV is being published too soon could contribute to underuse of DSM-IV by substantial numbers of psychiatrists. Thus, to foster compliance with it, APA must preserve in its efforts to demonstrate that the advantages of publishing it in 1993 outweigh the disadvantages of adopting yet another manual.

  16. Psychological variables and Wechsler Adult Intelligence Scale-IV performance.

    Science.gov (United States)

    Gass, Carlton S; Gutierrez, Laura

    2017-01-01

    The MMPI-2 and WAIS-IV are commonly used together in neuropsychological evaluations yet little is known about their interrelationships. This study explored the potential influence of psychological factors on WAIS-IV performance in a sample of 180 predominantly male veteran referrals that underwent a comprehensive neuropsychological examination in a VA Medical Center. Exclusionary criteria included failed performance validity testing and self-report distortion on the MMPI-2. A Principal Components Analysis was performed on the 15 MMPI-2 content scales, yielding three broader higher-order psychological dimensions: Internalized Emotional Dysfunction (IED), Externalized Emotional Dysfunction (EED), and Fear. Level of IED was not related to performance on the WAIS-IV Full Scale IQ or its four indexes: (Verbal Comprehension, Perceptual Reasoning, Working Memory, and Processing Speed). EED was not related to WAIS-IV performance. Level of Fear, which encompasses health preoccupations (HEA) and distorted perceptions (BIZ), was significantly related to WAIS-IV Full Scale IQ and Verbal Comprehension. These results challenge the common use of high scores on the MMPI-2 IED measures (chiefly depression and anxiety) to explain deficient WAIS-IV performance. In addition, they provide impetus for further investigation of the relation between verbal intelligence and Fear.

  17. Assembling filamentous phage occlude pIV channels.

    Science.gov (United States)

    Marciano, D K; Russel, M; Simon, S M

    2001-07-31

    Filamentous phage f1 is exported from its Escherichia coli host without killing the bacterial cell. Phage-encoded protein pIV, which is required for phage assembly and secretion, forms large highly conductive channels in the outer membrane of E. coli. It has been proposed that the phage are extruded across the bacterial outer membrane through pIV channels. To test this prediction, we developed an in vivo assay by using a mutant pIV that functions in phage export but whose channel opens in the absence of phage extrusion. In E. coli lacking its native maltooligosacharride transporter LamB, this pIV variant allowed oligosaccharide transport across the outer membrane. This entry of oligosaccharide was decreased by phage production and still further decreased by production of phage that cannot be released from the cell surface. Thus, exiting phage block the pIV-dependent entry of oligosaccharide, suggesting that phage occupy the lumen of pIV channels. This study provides the first evidence, to our knowledge, for viral exit through a large aqueous channel.

  18. Efeitos eletrocardiográficos do butorfanol em cães anestesiados pelo desfluorano Electrocardiographic effects of butorphanol in desflurane anesthetized dogs

    Directory of Open Access Journals (Sweden)

    Paulo Sérgio Patto dos Santos

    2004-08-01

    Full Text Available Objetivou-se com este experimento avaliar as possíveis alterações eletrocardiográficas decorrentes do uso do butorfanol em cães, durante anestesia geral inalatória com desfluorano. Para tal, foram utilizados vinte cães adultos, clinicamente saudáveis, distribuídos em dois grupos (n=10 denominados de GS e GB. Os animais foram induzidos à anestesia com propofol (8,4 ± 0,8mg kg-1, IV intubados com sonda orotraqueal de Magill e submetidos à anestesia inalatória pelo desfluorano (10V%. Decorridos 40 minutos da indução, foi administrado aos animais do GS, por via intramuscular, 0,05mL kg-1 de solução fisiológica a 0,9% (salina, enquanto que no GB, foi aplicado butorfanol na dose de 0,4mg kg-1 pela mesma via e em volume equivalente ao empregado no grupo anterior. As observações das variáveis freqüência cardíaca (FC, duração e amplitude da onda P (Ps e PmV, intervalo entre as ondas P e R (PR, duração do complexo QRS (QRSs, amplitude da onda R (RmV, duração do intervalo entre as ondas Q e T (QT e intervalo entre duas ondas R (RR tiveram início imediatamente antes da aplicação do opióide ou salina (M0. Novas mensurações foram realizadas 15 minutos após a administração do butorfanol ou salina (M15 e as demais colheitas foram realizadas à intervalos de 15 minutos, por um período de 60 minutos (M30, M45, M60 e M75. Os dados numéricos destas variáveis foram submetidos à Análise de Perfil (pThe aim of this work was to evaluate the alterations due to butorphanol administration in desflurane anesthetized dogs over heart rate (HR and electrocardiography (ECG. Twenty adult dogs, males and females, clinically healthy were randomly distributed in two groups of ten animals each (GS and GB. General anesthesia was induced by intravenous administration of propofol (8.4± 0.8mg kg-1 and immediately, the dogs were intubated and submitted to inhalatory anesthesia with desflurane (10V%. After 40 minutes of induction, animals from

  19. Doença de depósito lisossomal induzida pelo consumo de Ipomoea verbascoidea (Convolvulaceae em caprinos no semiárido de Pernambuco

    Directory of Open Access Journals (Sweden)

    Dayane D.C.C. Lima

    2013-07-01

    Full Text Available O objetivo deste trabalho foi reproduzir a intoxicação por Ipomoea verbascoidea em caprinos e descrever os aspectos epidemiológicos, clínicos e histopatológicos da intoxicação espontânea por essa planta no Estado de Pernambuco. Para isso, realizou-se o acompanhamento da epidemiologia da doença em sete municípios do semiárido pernambucano. Três caprinos espontaneamente intoxicados foram examinados e, em seguida eutanasiados e necropsiados (Grupo I. Para reproduzir experimentalmente a doença, as folhas secas de I. verbascoidea contendo 0,02% de swainsonina, foram fornecidas na dose de 4g/kg (0,8mg de swainsonina/kg a dois grupos de três animais. Os caprinos do Grupo II receberam a planta diariamente por 40 dias e foram eutanasiados no 41º dia de experimento. Os caprinos do Grupo III receberam a planta diariamente por 55 dias e foram eutanasiados no 120º dia de experimento. Outros três caprinos constituíram o grupo controle (Grupo IV. Nos grupos experimentais, as lesões encefálicas foram avaliadas por histopatologia e adicionalmente avaliaram-se as lesões cerebelares por morfometria, mediante mensuração da espessura da camada molecular, do número de neurônios de Purkinje e da área dos corpos celulares dessas células. Os principais sinais clínicos e lesões microscópicas foram semelhantes aos previamente reportados em animais intoxicados por plantas que contem swainsonina. Nos caprinos do GII e GIII, os primeiros sinais clínicos foram observados entre o 22º e 29º dia de experimento; clinicamente a doença desenvolvida por esses animais foi semelhante aos casos espontâneos. Nenhum dos caprinos do GIII se recuperou dos sinais neurológicos. Esse resultado evidencia que o consumo da planta por 26-28 dias após a observação dos primeiros sinais clínicos é suficiente para provocar lesões irreversíveis. Pela análise morfométrica, a camada molecular do cerebelo dos caprinos do Grupo I e III eram mais delgadas que

  20. A combined XAFS, ESI TOF-MS and LIBD study on the formation of polynuclear Zr(IV), Th(IV) and Pu(IV) species

    Science.gov (United States)

    Rothe, J.; Walther, C.; Brendebach, B.; Büchner, S.; Fuss, M.; Denecke, M. A.; Geckeis, H.

    2009-11-01

    The long term radiotoxicity of spent nuclear fuel disposed of in deep underground repositories after discharge from nuclear power reactors is determined by actinide elements, mainly plutonium. Water intrusion into the repository might cause container corrosion and leaching of the waste matrices, leading to the release of Pu and other actinides into the geological environment. Performance assessment for a future nuclear waste repository requires detailed knowledge on actinide aqueous chemistry in the aquifer surrounding the disposal site. Tetravalent actinides exhibit a strong tendency towards hydrolysis and subsequent polymerization and/or colloid formation. These species provide a potential pathway for migration of actinides away from the repository. Therefore, it is of fundamental interest to study their generation and properties in-situ. To this end, X-ray Absorption Fine Structure Spectroscopy (XAFS) at the INE-Beamline for actinide research at ANKA, Electrospray Mass-Spectrometry (ESI TOF-MS) and Laser Induced Breakdown Detection (LIBD) are combined at FZK-INE in a comprehensive attempt to characterize Zr(IV) (An(IV) analogue), Th(IV) and Pu(IV) polymerization and colloid formation.

  1. Solubility study of Tc(IV) in a granitic water

    International Nuclear Information System (INIS)

    Liu, D.J.; Yao, J.; Wang, B.; Bruggeman, C.; Maes, N.

    2007-01-01

    The deep geological disposal of the high level radioactive wastes is expected to be a safe disposal method in most countries. The long-lived fission product 99 Tc is present in large quantities in nuclear wastes and its chemical behavior in aqueous solution is of considerable interest. Under oxidizing conditions technetium exists as the anionic species TcO 4 - whereas under the reducing conditions, expected to exist in a deep geological repository, it is generally predicted that technetium will be present as TcO 2 .nH 2 O. Hence, the mobility of Tc(IV) in reducing groundwater may be limited by the solubility of TcO 2 .nH 2 O under these conditions. Due to this fact it is important to investigate the solubility of TcO 2 .nH 2 O. The solubility determines the release of radionuclides from waste form and is used as a source term in radionuclide migration analysis in performance assessment of radioactive waste repository. Technetium(IV) was prepared by reduction of a technetate solution with Sn 2+ . The solubility of Tc(IV) has been determined in simulated groundwater and redistilled water under aerobic and anaerobic conditions. The effects of pH and CO 3 2- concentration of solution on solubility of Tc(IV) were studied. The concentration of total technetium and Tc(IV) species in the solutions were periodically determined by separating the oxidized and reduced technetium species using a solvent extraction procedure and counting the beta activity of the 99 Tc with a liquid scintillation counter. The experimental results show that the rate of oxidation of Tc(IV) in simulated groundwater and redistilled water is about (1.49 ∝ 1.86) x 10 -9 mol L -1 d -1 under aerobic conditions, while no Tc(IV) oxidation was detected in simulated groundwater and redistilled water under anaerobic conditions. Under aerobic or anaerobic conditions the solubility of Tc(IV) in simulated groundwater and redistilled water is equal on the whole after centrifugation or ultrafiltration. The

  2. Densidade do solo, atributos químicos e sistema radicular do milho afetados pelo pastejo e manejo do solo

    Directory of Open Access Journals (Sweden)

    V. R. Silva

    2000-03-01

    Full Text Available A integração lavoura-pecuária é uma alternativa de renda dos produtores no sul do Brasil. Entretanto, o pisoteio animal e, ou, o preparo de solo podem compactá-lo, prejudicando o crescimento radicular e a produtividade das plantas. Estudaram-se os efeitos do pisoteio animal em regime de pastejo contínuo durante o inverno/primavera e do impacto do plantio direto e do preparo convencional de solo no estado de compactação, atributos químicos e distribuição radicular. Em Podzólico Vermelho-Amarelo de textura superficial franca, foi implantada uma pastagem de estação fria composta por aveia (Avena strigosa Schreb e azevém (Lolium multiflorum L.. A carga animal variou conforme o crescimento da pastagem. Em dezembro de 1996, foi implantada a cultura do milho (Zea mays L. para a produção de silagem, usando os seguintes tratamentos: plantio direto na área não pastejada, plantio direto após o pastejo, preparo convencional de solo na área não pastejada e preparo convencional de solo após pastejo. As avaliações apresentadas neste estudo são referentes ao terceiro ano de cultivo, no qual houve um período de pastejo de 107 dias. Aos 45 dias da emergência do milho, foram abertas trincheiras (100 x 40 cm para visualizar a distribuição do sistema radicular e coletar amostras de solo, a cada 5 cm, para caracterização química e determinação da densidade do solo e de raízes. Ao longo do perfil (0-40 cm, o desenho da distribuição de raízes indicou maior quantidade de raízes no preparo convencional de solo, concordando com os resultados de densidade de raízes. O pisoteio animal não teve efeito sobre as características físicas, possivelmente pelo fato de o resíduo da pastagem permanecer próximo a 1,0 Mg ha-1 de matéria seca. A densidade do solo no plantio direto, na camada de 5-10 cm, foi de 1,41 Mg m-3, tanto na área pastejada como na não pastejada. No preparo convencional de solo, esses valores foram de 1,15 Mg m-3

  3. Levomepromazina e acepromazina no bloqueio da arritmia induzida pela adrenalina em cães anestesiados pelo halotano

    Directory of Open Access Journals (Sweden)

    Rezende Márlis Langenegger de

    2002-01-01

    Full Text Available Com este experimento, objetivou-se comparar os efeitos antiarritmogênicos da levomepromazina e da acepromazina em cães anestesiados pelo halotano e submetidos a doses crescentes de adrenalina. Foram empregados 19 animais adultos, sadios, separados em dois grupos, sendo um de 10 (G1 e outro de 09 (G2. O G1 recebeu, por via intravenosa, levomepromazina, na dose de 1mg/kg, seguida 15 minutos após, pela aplicação de propofol, pela mesma via, na dose de 5 ± 1,3mg/kg. Procedeu-se à intubação orotraqueal e iniciou-se a administração de halotano, diluído em oxigênio, na concentração de 3 CAM (2,5 V%, em circuito anestésico semi-fechado. Decorridos 50 minutos da indução anestésica, iniciou-se a administração contínua, intravenosa, de solução de adrenalina a 4% em doses crescentes de 4, 5, 6, 7 e 8mig/kg/min, com incremento da dose a intervalos de 10 minutos. Para o G2, empregou-se a mesma metodologia, substituindo-se a levomepromazina pela acepromazina, na dose de 0,1mg/kg. A eletrocardiografia e as pressões arteriais (sistólica, diastólica e média dos animais permaneceram sob monitoramento contínuo, com início imediatamente antes da aplicação dos fármacos e término ao final do período experimental. As colheitas dos valores numéricos tiveram início imediatamente antes da aplicação dos fármacos (M1, seguidas de novas mensurações realizadas nos momentos correspondentes às doses crescentes de adrenalina (4, 5, 6, 7, 8mig/kg/minuto; M2, M3, M4, M5, M6, respectivamente. Os valores obtidos na eletrocardiografia referem o número total de batimentos ventriculares ectópicos correspondentes às doses crescentes de adrenalina. Apenas um animal de cada grupo apresentou arritmia ventricular sustentada, sendo que o animal pré-tratado com acepromazina foi à óbito. Os resultados obtidos permitiram concluir que a levomepromazina e a acepromazina minimizam a arritmia ventricular induzida pela adrenalina, nas doses empregadas

  4. Investigating the reasons of variability in Si IV and C IV broad absorption line troughs of quasars

    Science.gov (United States)

    Stathopoulos, Dimitrios; Lyratzi, Evangelia; Danezis, Emmanuel; Antoniou, Antonios; Tzimeas, Dimitrios

    2017-09-01

    In this paper we analyze the C IV and Si IV broad absorption troughs of two BALQSOs (J101056.69+355833.3, J114548.38+393746.6) to the individual components they consist of. By analyzing a BAL trough to its components we have the advantage to study the variations of the individual absorbing systems in the line of sight and not just the variations of the whole absorption trough or the variations of selected portions of BAL troughs exhibiting changes. We find that the velocity shifts and FWHMs (Full Width at Half Maximum) of the individual components do not vary between an interval of six years. All variable components show changes in the optical depths at line centers which are manifested as variations in the EW (Equivalent Width) of the components. In both BALQSOs, over corresponding velocities, Si IV has higher incidence of variability than C IV. From our analysis, evidence is in favour of different covering fractions between C IV and Si IV. Finally, although most of our results favour the crossing cloud scenario as the cause of variability, there is also strong piece of evidence indicating changing ionization as the source of variability. Thus, a mixed situation where both physical mechanisms contribute to BAL variability is the most possible scenario.

  5. Passando a limpo: um passeio pelos processos e pelos projetos de revitalização urbana do Meatpacking District, em Nova York, e da Região da Luz, em São Paulo

    Directory of Open Access Journals (Sweden)

    Janaina Maquiaveli

    2012-09-01

    Full Text Available O texto que segue é parte de um estudo comparativo entre os processos de revitalização urbana do Meatpacking District, em Nova York, e os projetos de revitalização da Região da Luz, em São Paulo. O artigo tem por objetivos transitar pelos principais paradigmas da sociologia urbana, destacar as formas de sociabilidade típicas dos grandes centros e refletir a respeito de como a sociologia contemporânea vem sendo exigida de uma revisão acerca do que são as cidades. Tudo isto tendo em vista os processos de revitalização urbana e gentrification, cada vez mais frequentes em diferentes cidades ao redor do mundo.The text below is part of a comparative study between the urban revitalization process of the "Meatpacking District" in New York City, and the urban revitalization projects of Região da Luz, in Sao Paulo, Brazil. The article's objectives are to undertake a critical overview of the main urban sociology theories and to reflect about the ways in which comtemporary sociology is being in need of a revision of its definitions about what cities are. This analysis considers the processes of urban revitalization and gentrification, that are becoming more frequent in cities all over the world.

  6. Desenvolvimento de equações para estimativa do VO2PICO pelo teste de 9 minutos

    Directory of Open Access Journals (Sweden)

    Ana Carolina Paludo

    2014-06-01

    Full Text Available OBJETIVO: Desenvolver e validar modelos matemáticos para predição do VO2pico em crianças e adolescentes, por meio da utilização do teste de campo de corrida/caminhada de 9 minutos. MÉTODOS: Foram avaliados 211 escolares, de sete a 12 anos de idade, de ambos os sexos, regularmente matriculados em duas escolas do Município de Londrina - PR, sendo 141 escolares separados para amostra de desenvolvimento e 70 para validação das equações desenvolvidas. As medidas avaliadas foram: massa corporal, estatura, espessuras de dobras cutâneas (tricipital e subescapular, além da maturação biológica. Os testes de corrida/caminha de 9 minutos foram realizados em pista de atletismo e a análise direta do VO2pico (mL/kg/min realizada em laboratório, com analisador de gás portátil, através um teste incremental em esteira rolante. O desenvolvimento das equações foi realizado através da análise de regressão linear pelo método stepwise e a validação foi realizada pelos testes matemáticos específicos levando em consideração uma significância de 5% para todas as análises. RESULTADOS: A equação geral para a amostra total foi VO2pico= 24,506+16,672 (maturação, 0=pré e 1=púbere e pós - 0,346 (Σ DC + 5,187 (sexo, 0=F e 1=M + 0,009 (distância com um r=0,742 e EPE=9,149 mL/kg/min e sua validação apresentou r=0,570, CCI= 0,68, limites de concordância de -1,4 mL/kg/min, EPE=8,39 mL/kg/min e CV= 21,94%. CONCLUSÃO: Conclui-se que a equação generalizada desenvolvida fornece uma estimativa válida do VO2pico em crianças e adolescentes de sete a 12 anos de idade.

  7. Agressividade na escola: realidades vivenciadas pelos profissionais na educação básica

    Directory of Open Access Journals (Sweden)

    Elisângela Cristina dos Santos

    2011-07-01

    Full Text Available O tema da Agressividade Escolar e as realidades vividas pelos profissionais da Educação Básica são apresentados neste trabalho trazendo a definição de agressividade como sendo um comportamento que resulta em dano pessoal e em destruição de propriedade, sendo que este dano pode ser tanto psicológico quanto físico. A agressividade é explicada conforme diferentes teorias, desde sua explicação por fatores genéticos, psicológicos, afetivos, emocionais, transtornos neuropsiquiátricos, problemas domésticos, pode ser gerado pelo bullying, sendo também considerada por alguns teóricos como sendo o fruto das influencias sociais, resultado dos modelos observados pelas crianças bem como a forma de vida moderna. A criança não é agressiva “porque quer”, mas não se pode negar a existência da agressão na Educação Básica. Entre 15 professores entrevistados, 10 relataram terem sofrido agressões em sala de aula e nas dependências da escola, agressões estas que se deram nas mais diversas formas, desde a agressão verbal direta e indireta até a agressão física de forma direta. As formas de agressão e a análise destes comportamentos são debatidas ao longo deste trabalho e que traz em sua conclusão o parecer de uma psicóloga que foi entrevistada e apresenta as formas que o profissional e educadores devem agir diante de comportamentos de agressividade Os principais autores foram Alan Train, GabrielMoser, dentre outros. Esta pesquisa foi importante, pois o assunto em questão é muito discutido entre professores, pais e comunidade em geral que reconhece o quanto à agressividade está presente na sociedade.Palavras-chave: educação; educação infantil; agressão; agressividade; comportamento agressivo.

  8. Conhecimento e utilização da floresta pelos índios Waimiri-Atroari do Rio Camanau - Amazonas

    Directory of Open Access Journals (Sweden)

    Robert P Miller

    1989-01-01

    Full Text Available Os índios Waimiri Atroari têm hábitos e costumes bastantes intactos e retiram da floresta, roça e rio os materiais necessários para a alimentação, utensílios e moradia. Este trabalho objetivou fazer um levantamento preliminar do conheciamento e utilização da floresta pelos índios. Foram inventariados todas as árvores com DAP > 6cm em cinco parcelas de 10 x 20m, localizadas 0,5km da aldeia, ao longo de um transecto abrangendo um gradiente de terra firme - baixio. Foram coletadas amostras para herbário e anotadas informações sobre uso e nome indígena. Em 0.1 hectare foram encontradas 135 árvores de 60 espécies, sendo as famílias mais comuns: Lecythidaceae, Leguminosae sensu latu, Burseraceae, Bombacaceae e Lauraceae. Noventa e cinco por cento dessas espécies eram identificadas com um nome específico na língua Waimiri Atroari e as demais receberam um nome genérico ("wiwe ' que quer dizer árvore. De uma amostra de 34 espécies sessenta e cinco por cento tinham algum uso específico. Estes dados demonstram um alto grau de conhecimento e utilização da floresta pelos Waimiri Atroari.The Waimiri Atroari retain much of their original culture and take from the forest, river, and plantations their food and most of the materials necessary fpr construction, craft, and medicines. This study attempted to quantify their knowledge and use of forest. Five quadrats of 10 x 20m (total = 0,1 hectare were located along a transition from "terra firme" (upland to "baixio" (stream valley. Herbarium specimens were collected from trees above 6cm DBH, and Indian names and uses were recorded. In 0,1 hectare, 135 trees belonging to 60 species were found. Lecythidaceae, Leguminosae (sensu latu, Burseraceae, Lauraceae and Bombacaceae were the commonest families. Ninety-five percent of the species received a Waimiri Atroari name, and in a smller sample (n = 34, sixty-five percent of the species had some specific use. These results show a high degree of

  9. Máxima velocidade aeróbia calculada pelo custo da frequência cardíaca: relação com a performance

    Directory of Open Access Journals (Sweden)

    D.F. da Silva

    2015-03-01

    Conclusões: A vFCmax em corredores recreacionais de meia idade tem elevada relação com as performances de 10 e 15 km e não foi diferente da Vpico (para vFCmax de Lacour et al., apresentando resultados semelhantes aos observados pelos métodos baseados no custo de oxigênio.

  10. European project SARGEN IV: safety approach and assessment of GEN IV reactors

    International Nuclear Information System (INIS)

    Ammirabile, L.

    2013-01-01

    • SARGEN I V has elaborated a proposal for the harmonization of safety assessment practices for GEN IV NPP. • An overall reinforcement of DiD is expected for GEN I V NPP, including improved independence between all levels of DiD. • An inherent approach should reinforce the fulfillment of fundamental safety functions e.g. the consequences for some situations should be reduced and the grace periods should be extended. For the same reason, the use of passive systems can be envisaged. • The need of complementary and integrated deterministic and probabilistic approaches is reiterated. • Methodologies: Some of them are not yet applied. • Assessment of hazards would be a challenging aspect of next generation of NPP safety assessment and should be improved, which is confirmed by the first insights of Fukushima Daiichi TEPCO reactors accidents. • Provisions to cope with extreme events notably to improve the grace period before cliff-edge effects and thus allowing back-up measures to be implemented have to be defined and should be considered as hardened equipments

  11. Evaluation of Market Design Programme - Phase IV; Utvaerdering av Market Designprogrammet - etapp IV

    Energy Technology Data Exchange (ETDEWEB)

    Wall, Tomas

    2013-08-15

    The Market Design program was established in year 2000 to study issues related to markets, regulations and policy instruments related to the deregulation of the Swedish electricity market. Through the years, the focus has widened to include not only Sweden but also international cooperation on these issues. The fourth phase of the program is now underway between the years 2010 and 2013. The overall project objective of this fourth phase is to increase knowledge about the Nordic and North European electricity market. Specific objective is to create new knowledge that affects market design of the single market area (Nordic, EU) and to contribute to constructive meetings between researchers, energy companies and government agencies on Market Design Issues. The purpose of the evaluation of the Market Design Program phase IV has been to investigate the results and benefits of the program in relation to the program's original objectives and to examine the need for and areas of further research and possible ways for the research in Market Design. The evaluation has been carried through in four phases during spring and summer 2013. The work has included reading, interviews with program stakeholders, analysis and reporting.

  12. Adaptation of the Wechsler Intelligence Scale for Children-IV (WISC-IV) for Vietnam.

    Science.gov (United States)

    Dang, Hoang-Minh; Weiss, Bahr; Pollack, Amie; Nguyen, Minh Cao

    2012-12-01

    Intelligence testing is used for many purposes including identification of children for proper educational placement (e.g., children with learning disabilities, or intellectually gifted students), and to guide education by identifying cognitive strengths and weaknesses so that teachers can adapt their instructional style to students' specific learning styles. Most of the research involving intelligence tests has been conducted in highly developed Western countries, yet the need for intelligence testing is as or even more important in developing countries. The present study, conducted through the Vietnam National University Clinical Psychology CRISP Center , focused on the cultural adaptation of the WISC-IV intelligence test for Vietnam. We report on (a) the adaptation process including the translation, cultural analysis and modifications involved in adaptation, (b) present results of two pilot studies, and (c) describe collection of the standardization sample and results of analyses with the standardization sample, with the goal of sharing our experience with other researchers who may be involved in or interested in adapting or developing IQ tests for non-Western, non-English speaking cultures.

  13. Overview of Generation IV (Gen IV) Reactor Designs - Safety and Radiological Protection Considerations

    International Nuclear Information System (INIS)

    Baudrand, Olivier; Blanc, Daniel; Ivanov, Evgeny; Bonneville, Herve; Clement, Bernard; Kissane, Martin; Meignen, Renaud; Monhardt, Daniel; Nicaise, Gregory; Bourgois, Thierry; Bruna, Giovanni; Hache, Georges; Repussard, Jacques

    2012-01-01

    The purpose of this document is to provide an updated overview of specific safety and radiological protection issues for all the reactor concepts adopted by the GIF (Generation IV International Forum), independent of their advantages or disadvantages in terms of resource optimization or long-lived-waste reduction. In particular, this new document attempts to bring out the advantages and disadvantages of each concept in terms of safety, taking into account the Western European Nuclear Regulators' Association (WENRA) statement concerning safety objectives for new nuclear power plants. Using an identical framework for each reactor concept (sodium-cooled fast reactors or SFR, high / very-high temperature helium-cooled reactors of V/HTR, gas-cooled fast reactors or GFR, lead-or lead / bismuth-cooled fast reactors or LFR, molten salt reactors or MSR, and supercritical-water-cooled reactors or SCWR), this summary report provides some general conclusions regarding their safety and radiological protection issues, inspired by WENRA's safety objectives and on the basis of available information. Initial lessons drawn from the events at the Fukushima-Daiichi nuclear power plant in March 2011 have also been taken into account in IRSN's analysis of each reactor concept

  14. Comportamento da parasitemia avaliada pelo método de Strout modificado em chagásicos agudos em tratamento

    Directory of Open Access Journals (Sweden)

    Cleudson Castro

    1988-12-01

    Full Text Available Em 18 pacientes com doença de Chagas aguda foi semiquantificada a parasitemia, pelo método de Strout modificado, antes e durante o tratamento. Antes da terapêutica a parasitemia variou entre 1 e 104 tripanossomos, e após o início do tratamento a parasitemia foi lida repetidamente com um intervalo, na maioria dos casos, entre dois e cinco dias, até a negativação. A dose inicial dos medicamentos foi de 10 a 15mg/kg/dia de Nifurtimox para sete pacientes, e 10 a 20mg/kg/dia de Benzonidazol para onze indivíduos. Após início do tratamento com Nifurtimox um paciente ficou o mínimo de cinco e dois o máximo de 23 dias com parasitemia enquanto com o Benzonidazol um paciente permaneceu o máximo de 15 dias.com parasitemia patente. O Benzonidazol baixou a parasitemia mais rapidamente que o Nifurtimox

  15. Estudo comparativo das ferramentas para mapeamento das atividades executadas pelos consumidores em processos de serviço

    Directory of Open Access Journals (Sweden)

    Gabriela Andre Jorge

    2015-01-01

    Full Text Available Resumo O objetivo deste artigo é explorar o potencial de aplicação das ferramentas de mapeamento na construção de mapas de processo que evidenciem as atividades executadas pelos consumidores em processos de serviço. O artigo aborda as ferramentas SIPOC, Fluxograma, Blueprint, Process-Chain-Network, Mapa do Consumo, SERVPRO e Carta de Atividades, exemplificando sua aplicação na construção de mapas que oferecem diferentes visões processuais para um processo de compra via internet adotando a abordagem de decomposição hierárquica na análise do fluxo de atividades do consumidor. Estas ferramentas são analisadas quanto à capacidade de representar os diferentes aspectos do processo mapeado, considerando características como a forma de representação gráfica e o enfoque, abrangência e granularidade da visualização que oferecem. Finalmente, é apresentada uma avaliação comparativa da capacidade informativa destas ferramentas, procurando-se evidenciar o diferencial de cada uma.

  16. Entalhamento de cerâmicas para medida de tenacidade à fratura pelo método SEVNB

    Directory of Open Access Journals (Sweden)

    S. Ribeiro

    2013-06-01

    Full Text Available O objetivo deste trabalho é apresentar uma máquina para entalhamento de corpos de prova cerâmicos, bem como a escolha e a execução do entalhamento, usando SiC sinterizado via fase líquida, com adições de Al2O3 e Yb2O3, como material experimental para ser entalhado. Foi desenvolvido e construído, junto a uma empresa de S. Carlos-SP, um equipamento que permite produzir entalhes finos em corpos cerâmicos para posterior ruptura, visando determinar K IC pelo método SEVNB. Amostras de SiC com 10% de Al2O3+Yb2O3 foram sinterizadas a 1950 ºC, retificadas e entalhadas com lâminas de barbear e pastas diamantadas de 15, 9, 6, 3, 1 e 0,25 µm. A máquina produzida para o entalhamento das amostras está em operação no DEMAR-EEL-USP e, ao que se sabe, é a primeira no Brasil. Os resultados mostraram que em função da espessura da lâmina e da granulometria do agente abrasivo, pode-se produzir entalhes com diferentes raios de curvatura de sua ponta e profundidades.

  17. Agravos à saúde referidos pelos trabalhadores de enfermagem em um hospital público da Bahia

    Directory of Open Access Journals (Sweden)

    Luciana Souza de Freitas Machado

    2014-10-01

    Full Text Available Embora o trabalho seja essencial à vida humana, o contexto no qual é realizado pode desencadear tensão, desajuste e consequente adoecimento. Estudos apontam a Enfermagem como uma ocupação com alto risco para adoecimento, em especial no ambiente hospitalar. O objetivo deste estudo foi estimar a ocorrência de agravos à saúde referidos pelos trabalhadores de enfermagem em um hospital na Bahia. Estudo de corte transversal envolvendo 309 profissionais. As queixas de saúde mais frequentes relacionaram-se a sintomas osteomusculares como dor nas pernas 66,4% (192 e dor nas costas 61,8% (178; e à saúde mental com predomínio de cansaço mental 47% (131 e nervosismo 33,7% (93. Os resultados apontam que enfermeiros apresentaram maior frequência de agravos posturais e queixas de saúde mental enquanto as queixas de agravos respiratórios foram mais prevalentes entre técnicos e auxiliares. Estes resultados evidenciam necessidade de maior consciência do processo de trabalho e realização de atividades preventivas.

  18. A cultura escolar portuguesa pelo traçado literário do século XIX

    Directory of Open Access Journals (Sweden)

    Carlota Boto

    2011-04-01

    Full Text Available ResumoEste ensaio procura abordar o tema da escola primária em Portugal do século XIX, à luz de vestígios apresentados por textos lit erários, eruditos e populares. Assim, são enfocadas algumas imagens, pinceladas de obras clássicas, populares, por vezes anônimas, as quais, pelo registro da literatura, capturam descrições da realidade, mediante o entrelaçamento da figura do professor com a do aluno e a da aula; que, em seu conjunto, oferece subsídios para a reconstituição de recortes sociais do ambiente cultural que lhe conferia suporte. Palavras-chave : escola; ensino; educação, história; literatura.   Abstract This work aims at approaching the elementary school matter in Portugal during the XIX Century, based on both popular and scholarly literary tests. Some registers about teachers and students relationship described by not only unknown but also classical authors are taken into considerat ion in an attempt to portray the society of that time. Keywords: school; teaching; education, history; literature.

  19. Adesão ao tratamento anti-hipertensivo: análise pelo Teste de Morisky-Green*

    Directory of Open Access Journals (Sweden)

    Letícia Palota Eid

    2013-06-01

    Full Text Available Considerando que a adesão ao tratamento é um desafio para o controle da hipertensão arterial sistêmica (HAS, este estudo teve como objetivo caracterizar os sujeitos da pesquisa segundo as variáveis sóciodemograficas e econômicas e avaliar o nível de adesão pelo Teste de Morisky-Green. Trata-se de estudo descritivo transversal de abordagem quantitativa, realizado com 90 hipertensos em um Centro de Saúde. O instrumento utilizado para coleta de dados foi o Teste de Morisky-Green (TMG. Os resultados mostraram que 63,0% da amostra eram mulheres e a média de idade foi de 66 anos, sendo que 72,2% não apresentaram adesão ao tratamento medicamentoso, corroborando pesquisas realizadas sobre adesão. Conclui-se que este estudo pode proporcionar subsídios para intervenções sobre a assistência aos pacientes com HAS, com a finalidade de aumentar as taxas de adesão e a qualidade de vida.

  20. Incômodo causado pelo ruído urbano à população de Curitiba, PR

    Directory of Open Access Journals (Sweden)

    Paulo Henrique Trombetta Zannin

    2002-08-01

    Full Text Available Descreve-se a reação da população de Curitiba, PR -- cidade com aproximadamente 1,6 milhões de habitantes --, ao ruído ambiental . Os dados foram coletados por meio de questionários distribuídos aleatoriamente a moradores da cidade. Dos 1.000 questionários distribuídos, 860 (86% foram avaliados. As principais fontes de ruído causadoras de incômodo identificadas foram o tráfego de veículos (73% e os vizinhos (38%, sendo que estes foram classificados como a principal fonte de desconforto. Todos os respondentes apontaram pelo menos um dos seguintes itens como geradores de ruído: vizinhos, animais, sirenes, construção civil, templos religiosos, casas noturnas, brinquedos e aparelhos domésticos. As principais reações ao ruído foram: irritabilidade (58%, baixa concentração (42%, insônia (20% e dores de cabeça (20%.

  1. LUTAS PELO CORPO DESPORTIVO: EDUCAÇÃO FÍSICA E FUTEBOL EM PORTUGAL DURANTE O ESTADO NOVO

    Directory of Open Access Journals (Sweden)

    Nuno Domingos

    2014-12-01

    Full Text Available Este texto procura pensar a relação do futebol com a educação do corpo em Portugal na primeira metade do século XX. O seu interesse maior é o de refletir sobre o modo como uma modalidade não ensinada no interior das instituições do Estado, ao contrário de outras práticas desportivas, construiu circuitos e espaços particulares da educação do corpo, assentes em saberes transmitidos por experiência prática depois debatidos em artigos de jornal e noutras publicações. Esta clandestinidade do futebol contribui durante décadas para que o jogo não fosse considerado uma atividade com bases científicas, mas apenas um jogo com uma interação relativamente pouco organizada. A recuperação das lógicas que presidiram à constituição do jogo como atividade específica é fundamental para perceber como os seus fundamentos estéticos e científicos se expandiram num contexto de lutas pelo seu significado.

  2. PIRATARIA E DOWNLOAD COMO COMPORTAMENTO DESVIANTE E AS TÉCNICAS DE NEUTRALIZAÇÃO USADAS PELO CONSUMIDORES

    Directory of Open Access Journals (Sweden)

    João Felipe R. Sauerbronn

    2011-03-01

    Full Text Available Apesar do crescimento na venda de música digital, pesquisas apontam que 95% dos downloads musicais não pagam direitos autorais. As tecnologias de download e compartilhamento são geralmente apontados como responsáveis pelo fenômeno chamado de pirataria pela indústria fonográfica, colocando na mesma categoria pessoas físicas e jurídicas, vendedores e usuários. A indústria classifica download como crime, um comportamento desviante do ideal social e econômico. Este trabalho busca dar voz ao consumidor, ao tentar compreender suas percepções e estratégias de neutralização de tal comportamento desviante. Para tanto, foram realizados quatro grupos de foco com jovens “downloaders” com o objetivo de verificar a relação desses consumidores com a música, a identificação de comportamentos desviantes e a descrição das Técnicas de Neutralização utilizadas. Os dados foram analisados segundo a Análise de Discurso e os resultados mostraram oito maneiras dos consumidores justificarem ‘maus comportamentos’, representando a ampliação de duas das categorias apresentadas pela literatura.

  3. Transient Analysis Needs for Generation IV Reactor Concepts

    International Nuclear Information System (INIS)

    Siefken, L.J.; Harvego, E.A.; Coryell, E.W.; Davis, C.B.

    2002-01-01

    The importance of nuclear energy as a vital and strategic resource in the U. S. and world's energy supply mix has led to an initiative, termed Generation IV by the U.S. Department of Energy (DOE), to develop and demonstrate new and improved reactor technologies. These new Generation IV reactor concepts are expected to be substantially improved over the current generation of reactors with respect to economics, safety, proliferation resistance and waste characteristics. Although a number of light water reactor concepts have been proposed as Generation IV candidates, the majority of proposed designs have fundamentally different characteristics than the current generation of commercial LWRs operating in the U.S. and other countries. This paper presents the results of a review of these new reactor technologies and defines the transient analyses required to support the evaluation and future development of the Generation IV concepts. The ultimate objective of this work is to identify and develop new capabilities needed by INEEL to support DOE's Generation IV initiative. In particular, the focus of this study is on needed extensions or enhancements to SCDAP/RELAP5/3D code. This code and the RELAP5-3D code from which it evolved are the primary analysis tools used by the INEEL and others for the analysis of design-basis and beyond-design-basis accidents in current generation light water reactors. (authors)

  4. Stark broadening of Ca IV spectral lines of astrophysical interest

    Science.gov (United States)

    Alonso-Medina, A.; Colón, C.

    2014-12-01

    Ca IV emission lines are under the preview of Solar Ultraviolet Measurements of Emitted Radiation device aboard the Solar and Heliospheric Observatory. Also, lines of the Ca IV in planetary nebulae NGC 7027 were detected with the Short Wavelength Spectrometer on board the Infrared Space Observatory. These facts justify an attempt to provide new spectroscopic parameters of Ca IV. There are no theoretical or experimental Stark broadening data for Ca IV. Using the Griem semi-empirical approach and the COWAN code, we report in this paper calculated values of the Stark broadening parameters for 467 lines of Ca IV. They were calculated using a set of wavefunctions obtained by using Hartree-Fock relativistic calculations. These lines arising from 3s23p4ns (n = 4, 5), 3s23p44p, 3s23p4nd (n = 3, 4) configurations. Stark widths and shifts are presented for an electron density of 1017 cm-3 and temperatures T = 10 000, 20 000 and 50 200 K. As these data cannot be compared to others in the literature, we present an analysis of the different regularities of the values presented in this work.

  5. Endonuclease IV of Escherichia coli is induced by paraquat

    International Nuclear Information System (INIS)

    Chan, E.; Weiss, B.

    1987-01-01

    The addition of paraquat (methyl viologen) to a growing culture of Escherichia coli K-12 led within 1 hr to a 10- to 20-fold increase in the level of endonuclease IV, a DNase for apurinic/apyrimidinic sites. The induction was blocked by chloramphenicol. Increases of 3-fold or more were also seen with plumbagin, menadione, and phenazine methosulfate. H 2 O 2 produced no more than a 2-fold increase in endonuclease IV activity. The following agents had no significant effect: streptonigrin, nitrofurantoin, tert-butyl hydroperoxide, γ rays, 260-nm UV radiation, methyl methanesulfonate, mitomycin C, and ascorbate. Paraquat, plumbagin, menadione, and phenazine methosulfate are known to generate superoxide radical anions via redox cycling in vivo. A mutant lacking superoxide dismutase was unusually sensitive to induction by paraquat. In addition, endonuclease IV could be induced by merely growing the mutant in pure O 2 . The levels of endonuclease IV in uninduced or paraquat-treated cells were unaffected by mutations of oxyR, a H 2 O 2 -inducible gene that governs an oxidative-stress regulon. The results indicate that endonuclease IV is an inducible DNA-repair enzyme and that its induction can be mediated via the production of superoxide radicals

  6. Endonuclease IV of Escherichia coli is induced by paraquat

    Energy Technology Data Exchange (ETDEWEB)

    Chan, E.; Weiss, B.

    1987-05-01

    The addition of paraquat (methyl viologen) to a growing culture of Escherichia coli K-12 led within 1 hr to a 10- to 20-fold increase in the level of endonuclease IV, a DNase for apurinic/apyrimidinic sites. The induction was blocked by chloramphenicol. Increases of 3-fold or more were also seen with plumbagin, menadione, and phenazine methosulfate. H/sub 2/O/sub 2/ produced no more than a 2-fold increase in endonuclease IV activity. The following agents had no significant effect: streptonigrin, nitrofurantoin, tert-butyl hydroperoxide, ..gamma.. rays, 260-nm UV radiation, methyl methanesulfonate, mitomycin C, and ascorbate. Paraquat, plumbagin, menadione, and phenazine methosulfate are known to generate superoxide radical anions via redox cycling in vivo. A mutant lacking superoxide dismutase was unusually sensitive to induction by paraquat. In addition, endonuclease IV could be induced by merely growing the mutant in pure O/sub 2/. The levels of endonuclease IV in uninduced or paraquat-treated cells were unaffected by mutations of oxyR, a H/sub 2/O/sub 2/-inducible gene that governs an oxidative-stress regulon. The results indicate that endonuclease IV is an inducible DNA-repair enzyme and that its induction can be mediated via the production of superoxide radicals.

  7. Development of Electromagnetic Analysis Model for IV-CEAPI

    Energy Technology Data Exchange (ETDEWEB)

    Park, Jinseok; Jang, Yongtae; Lee, Myounggoo; Cho, Yeonho; Kim, Hyunmin [KEPCO Engineering and Construction, Inc., Daejeon (Korea, Republic of); Hong, Hoonbin; Baek, Minho [Woojin Inc., Osan (Korea, Republic of)

    2016-05-15

    There are many different types of position indicators such as reed switch type, ultrasonic type, solenoid type, etc. Through an analysis of strengths and weakness of those types, solenoid type was selected for an IV-CEAPI. Although solenoid type CEAPIs have been used world-wide, the IV-CEAPI is to be very different from the conventional designs due to its harsh operating environment. The concept of the IV-CEAPI is simple as shown in Figure 1. The coil is made of mineral insulated wire to be able to operate inside reactor vessel. The CEA is connected to the shaft which is made of ferromagnetic material. As the CEA position varies, the inductance variation is detected by the inductance meter located outside the vessel. Unlike the conventional ones, the IV-CEAPI used only one coil to eliminate coil connection point and electric components inside vessel. A finite element model was developed to calculate inductance of the solenoid type IV-CEAPI. The model considers eddy current effect to calculate frequency dependent inductance value. Analyses were performed to produce an inductance curve to the shaft position.

  8. Development of Electromagnetic Analysis Model for IV-CEAPI

    International Nuclear Information System (INIS)

    Park, Jinseok; Jang, Yongtae; Lee, Myounggoo; Cho, Yeonho; Kim, Hyunmin; Hong, Hoonbin; Baek, Minho

    2016-01-01

    There are many different types of position indicators such as reed switch type, ultrasonic type, solenoid type, etc. Through an analysis of strengths and weakness of those types, solenoid type was selected for an IV-CEAPI. Although solenoid type CEAPIs have been used world-wide, the IV-CEAPI is to be very different from the conventional designs due to its harsh operating environment. The concept of the IV-CEAPI is simple as shown in Figure 1. The coil is made of mineral insulated wire to be able to operate inside reactor vessel. The CEA is connected to the shaft which is made of ferromagnetic material. As the CEA position varies, the inductance variation is detected by the inductance meter located outside the vessel. Unlike the conventional ones, the IV-CEAPI used only one coil to eliminate coil connection point and electric components inside vessel. A finite element model was developed to calculate inductance of the solenoid type IV-CEAPI. The model considers eddy current effect to calculate frequency dependent inductance value. Analyses were performed to produce an inductance curve to the shaft position

  9. The affinity plutonium(IV) for nitrogen donor ligands

    International Nuclear Information System (INIS)

    Jarvis, N.V.; Hancock, R.D.

    1994-01-01

    Established ligand design principles are used to predict the solution chemistry of Pu(IV) with nitrogen donor ligands which do not contain carboxylate donors. pK a 's of the nitrogen donors are lowered by addition of hydroxyalkyl groups causing Pu(IV) to have a greater affinity for these ligands than for hydroxide. Potentiometric studies using the ligands N,N,N'N',N''-pentakis(2-hydroxypropyl)-1,4,7-triazaheptane; N,N,N',N',N''-pentakis(2-hydroxyethyl)-1,4,7-triazaheptane; N,N,N',N',N'-tetrakis(2-hydroxyethyl)-1,2-diaminoethane; N,N,N',N'-tetrakis(2-hydroxyethyl)-trans-1,2-diaminocyclohexane; 1,4,8,11-tetrakis(2-hydroxyethyl)-1,4,8,11-tetraazacyclotetradecane and N,N-bis(2-hydroxyethyl)glycine with Pu(IV) showed that Pu(IV) has a considerable aqueous solution chemistry with these ligands. Data were processed by the ESTA library of programs and stability constants for all the systems are reported. Implications for selective ligand design for Pu(IV) are discussed. (orig.)

  10. Avaliação da determinação da fibra em detergente neutro e da fibra em detergente ácido pelo sistema ANKOM

    Directory of Open Access Journals (Sweden)

    Berchielli Telma Teresinha

    2001-01-01

    Full Text Available O objetivo do trabalho foi comparar os valores de fibra em detergente neutro (FDN e os de fibra em detergente ácido (FDA obtidos com o equipamento ANKOM e pelo método convencional (Van Soest. No primeiro ensaio foram analisados cinco materiais diferentes (cana-de-açúcar, capim-braquiária, silagem de milho, polpa cítrica e fezes bovina e testados quatro tipos de saquinhos para filtragem de amostra. O delineamento experimental foi em blocos casualizados, em um fatorial 5x4 (cinco materiais diferentes e quatro tipos de saquinhos de filtragem, com três repetições. As médias obtidas foram comparadas àquelas obtidas com método convencional. No segundo ensaio procurou-se avaliar o efeito da quantidade de amostra por saquinho (0,5; 0,8 e 1,0 g sobre os teores de FDN e FDA em três tipos de alimentos, utilizando o ANKOM. Neste ensaio, o delineamento experimental foi em blocos casualizados em esquema fatorial 3x3 (três alimentos x três quantidades, com três repetições. Os tipos de saquinhos de filtragem utilizados não influenciaram os teores de FDN nos diferentes alimentos, com exceção das fezes, cujos saquinhos de náilon resultaram em concentrações de FDN inferiores. Não houve diferença entre os valores de FDN e FDA, obtidos pelo equipamento ANKOM ou pelo convencional, para os alimentos estudados, com exceção da polpa cítrica, cujo valor médio de FDA pelo ANKOM foi inferior àquele obtido pelo método convencional. A quantidade não exerceu efeito sobre a concentração de FDN dos alimentos analisados no equipamento ANKOM.

  11. Classification of titanium dioxide; Clasificacion del dioxido de titanio

    Energy Technology Data Exchange (ETDEWEB)

    Macias B, L.R. [Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico); Garcia C, R.M.; Maya M, M.E. [Secretaria de Hacienda y Credito Publico de Mexico, Mexico (Mexico); Ita T, A. De [Universidad Autonoma Metropolitana Azcapotzalco, Mexico (Mexico); Palacios G, J. [Instituto Politecnico Nacional (Mexico)

    2002-07-01

    In this work the X-ray diffraction (XRD), Scanning Electron Microscopy (Sem) and the X-ray Dispersive Energy Spectroscopy techniques are used with the purpose to achieve a complete identification of phases and mixture of phases of a crystalline material as titanium dioxide. The problem for solving consists of being able to distinguish a sample of titanium dioxide being different than a titanium dioxide pigment. A standard sample of titanium dioxide with NIST certificate is used, which indicates a purity of 99.74% for the TiO{sub 2}. The following way is recommended to proceed: a)To make an analysis by means of X-ray diffraction technique to the sample of titanium dioxide pigment and on the standard of titanium dioxide waiting not find differences. b) To make a chemical analysis by the X-ray Dispersive Energy Spectroscopy via in a microscope, taking advantage of the high vacuum since it is oxygen which is analysed and if it is concluded that the aluminium oxide appears in a greater proportion to 1% it is established that is a titanium dioxide pigment, but if it is lesser then it will be only titanium dioxide. This type of analysis is an application of the nuclear techniques useful for the tariff classification of merchandise which is considered as of difficult recognition. (Author)

  12. A COMPARATIVE CLINICAL STUDY BETWEEN IV ESMOLOL AND IV FENTANYL ON ATTENUATION OF HAEMODYNAMIC RESPONSES TO LARYNGOSCOPY AND INTUBATION

    Directory of Open Access Journals (Sweden)

    Abu Lais Mustaque

    2016-04-01

    Full Text Available INTRODUCTION Laryngoscopy and intubation is an integral part for providing general anaesthesia to patients undergoing various types of surgery. It also plays an important role in critical care units viz. for providing mechanical ventilation. It is a very essential tool in the hands of anaesthesiologist in maintaining airway. The present study is undertaken to determine and compare the efficacy of single bolus dose of IV esmolol 1 mg/kg and IV fentanyl 2 mcg/kg in attenuating the haemodynamic responses to laryngoscopy and tracheal intubation and to ascertain the effectiveness of esmolol hydrochloride and fentanyl citrate in suppressing sympathetic responses. MATERIAL & METHODS The study was conducted under the Department of Anaesthesiology and Critical Care, Assam Medical College and Hospital, Dibrugarh, during the period July 2013 to June 2014. For this purpose, 150 patients of either sex between 20-50 years of ASA I & II physical status were selected after obtaining informed and written consent and were divided into two groups namely, Group E receiving IV esmolol (1 mg/kg and Group F receiving IV fentanyl (2 mcg/kg. RESULTS Inj. fentanyl 2 mcg/kg IV administered 5 minutes before laryngoscopy and intubation was able to prevent adverse haemodynamic changes better than Inj. esmolol 1 mg/kg IV administered 3 minutes prior to laryngoscopy and intubation during elective surgeries under general anaesthesia. CONCLUSION Hence, from the findings of this study we can conclude that IV bolus dose of fentanyl 2 mcg/kg administered 5 minutes before laryngoscopy and intubation can attenuate the sympathetic response to laryngoscopy and intubation without any side effects of the drug in healthy patients undergoing elective surgeries under general anaesthesia.

  13. Avaliação da buprenorfina pelas vias intravenosa ou intramuscular em cães anestesiados pelo desfluorano

    Directory of Open Access Journals (Sweden)

    Souza Almir Pereira de

    2004-01-01

    Full Text Available Objetivou-se avaliar comparativamente os efeitos da buprenorfina, administrada pelas vias intramuscular(IM ou intravenosa (IV, sobre variáveis cardiovasculares, em cães anestesiados com desfluorano. Para tanto, foram utilizados dezesseis cães adultos, clinicamente saudáveis, distribuídos em dois grupos (n=8 denominados de GI e GII. Em ambos os grupos, a anestesia foi induzida com propofol (8 mg/kg, IV e em seguida os animais foram intubados com sonda orotraqueal de Magill, a qual foi conectada ao aparelho de anestesia volátil para administração de desfluorano (1,5 CAM. Após 30 minutos do início da anestesia inalatória, foi aplicado no GI buprenorfina na dose de 0,02 mg/kg pela via IV, enquanto no GII administrou-se o opióide na mesma dose porém pela via IM. Avaliaram-se: freqüência cardíaca (FC; pressões arteriais sistólica, diastólica e média (PAS, PAD e PAM; débito cardíaco (DC; pressão venosa central (PVC e pressão da artéria pulmonar (PAP. As colheitas foram feitas nos seguintes momentos: M1 - 30 minutos após o início da anestesia inalatória antes da aplicação do opióide; M2 - 15 minutos após a administração da buprenorfina; M3, M4 e M5 - de 15 em 15 minutos após M2. A avaliação estatística dos dados foi efetuada por meio de Análise de Perfil (p<0,05. As variáveis PAS, PAM, DC, PVC e PAP, não apresentaram alterações significativas de seus valores em ambos os grupos. Entretanto, a FC e a PAD apresentaram reduções significativas após a administração do opióide apenas no GI. Assim, pôde-se concluir que a buprenorfina administrada pelas vias IV ou IM não interferiu nos índices cardiovasculares de forma a manifestar efeitos clínicos importantes em cães anestesiados com desfluorano.

  14. organizado pelo Ibracon

    Directory of Open Access Journals (Sweden)

    Nivaldo Venâncio da Silva

    2006-01-01

    Full Text Available Concursos podem proporcionar vivência prática em problemas de caráter técnico, como a idealização de uma forma adequada para a construção de um pórtico em concreto armado, considerando-se os aspectos estruturais e a formulação dos materiais constituintes, tais como cimento, agregados, fibras, aditivos e aço. Este trabalho deve basear-se tanto em informações adquiridas durante o curso de graduação quanto em técnicas modernas e apropriadas para a aplicação no projeto.

  15. Automatic generation and analysis of solar cell IV curves

    Science.gov (United States)

    Kraft, Steven M.; Jones, Jason C.

    2014-06-03

    A photovoltaic system includes multiple strings of solar panels and a device presenting a DC load to the strings of solar panels. Output currents of the strings of solar panels may be sensed and provided to a computer that generates current-voltage (IV) curves of the strings of solar panels. Output voltages of the string of solar panels may be sensed at the string or at the device presenting the DC load. The DC load may be varied. Output currents of the strings of solar panels responsive to the variation of the DC load are sensed to generate IV curves of the strings of solar panels. IV curves may be compared and analyzed to evaluate performance of and detect problems with a string of solar panels.

  16. A role for collagen IV in cardiovascular disease?

    DEFF Research Database (Denmark)

    Steffensen, Lasse Bach; Rasmussen, Lars M

    2018-01-01

    Over the past decade, studies have repeatedly found single nucleotide polymorphisms located in the COL4A1 and COL4A2 genes to be associated with cardiovascular disease (CVD), and the 13q34 locus harboring these genes is one of approximately 160 genome-wide significant risk loci for coronary artery...... disease. COL4A1 and COL4A2 encode the ⍺1- and ⍺2-chains of collagen IV, a major component of basement membranes in various tissues including arteries. In spite of the growing body of evidence indicating a role for collagen IV in CVD, remarkably few studies aim at directly investigating such a role....... The purpose of this review is to summarize the clinical reports linking 13q34 to coronary artery disease, atherosclerosis and artery stiffening and to assemble the scattered pieces of evidence from experimental studies based on vascular cells and -tissue collectively supporting a role for collagen IV...

  17. I-V Curves from Photovoltaic Modules Deployed in Tucson

    Science.gov (United States)

    Kopp, Emily; Brooks, Adria; Lonij, Vincent; Cronin, Alex

    2011-10-01

    More than 30 Mega Watts of photo-voltaic (PV) modules are connected to the electric power grid in Tucson, AZ. However, predictions of PV system electrical yields are uncertain, in part because PV modules degrade at various rates (observed typically in the range 0% to 3 %/yr). We present I-V curves (PV output current as a function of PV output voltage) as a means to study PV module efficiency, de-ratings, and degradation. A student-made I-V curve tracer for 100-Watt modules will be described. We present I-V curves for several different PV technologies operated at an outdoor test yard, and we compare new modules to modules that have been operated in the field for 10 years.

  18. Adsorption of Some Hazardous Radionuclides on Cerium(IV) Antimonate

    International Nuclear Information System (INIS)

    Aly, H.F.; Zakaria, E.S.; Shady, S.A.; El-Naggar, I.M.

    1999-01-01

    Cerium(IV) antimonate had been prepared by the dropwise addition of 0.6 M antimony pentachloride and 0.6 M cerium ammonium nitrate solutions by a molar radio of Ce/Sb 0.75. Exchange isotherms for H +/ Co 2+ , H +/ Cs +, H +/ Zn 2+ , H +/ Sr 2+ and H +/ Eu 3+ have been determined at 25, 40 and 60 degree. Besides it was proved that europium is physically adsorbed while zinc, strontium, cobalt and cesium are chemically adsorbed. Moreover, the heat of adsorption of zinc, strontium, cobalt and cesium on cerium(IV) antimonate had been calculated and indicated that cerium(IV) antimonate is of endothermic behaviour towards these ions. Also the distribution coefficients of these ions were determined and it was found that the selectivity in the order: Eu 3+ >Sr 2+ > Cs +> Na +

  19. Chelation and stabilization of berkelium in oxidation state +IV

    Science.gov (United States)

    Deblonde, Gauthier J.-P.; Sturzbecher-Hoehne, Manuel; Rupert, Peter B.; An, Dahlia D.; Illy, Marie-Claire; Ralston, Corie Y.; Brabec, Jiri; de Jong, Wibe A.; Strong, Roland K.; Abergel, Rebecca J.

    2017-09-01

    Berkelium (Bk) has been predicted to be the only transplutonium element able to exhibit both +III and +IV oxidation states in solution, but evidence of a stable oxidized Bk chelate has so far remained elusive. Here we describe the stabilization of the heaviest 4+ ion of the periodic table, under mild aqueous conditions, using a siderophore derivative. The resulting Bk(IV) complex exhibits luminescence via sensitization through an intramolecular antenna effect. This neutral Bk(IV) coordination compound is not sequestered by the protein siderocalin—a mammalian metal transporter—in contrast to the negatively charged species obtained with neighbouring trivalent actinides americium, curium and californium (Cf). The corresponding Cf(III)-ligand-protein ternary adduct was characterized by X-ray diffraction analysis. Combined with theoretical predictions, these data add significant insight to the field of transplutonium chemistry, and may lead to innovative Bk separation and purification processes.

  20. Non-equilibrium ionization by a periodic electron beam. II. Synthetic Si IV and O IV transition region spectra

    Science.gov (United States)

    Dzifčáková, Elena; Dudík, Jaroslav

    2018-03-01

    Context. Transition region (TR) spectra typically show the Si IV 1402.8 Å line to be enhanced by a factor of 5 or more compared to the neighboring O IV 1401.2 Å, contrary to predictions of ionization equilibrium models and the Maxwellian distribution of particle energies. Non-equilibrium effects in TR spectra are therefore expected. Aims: To investigate the combination of non-equilibrium ionization and high-energy particles, we apply the model of the periodic electron beam, represented by a κ-distribution that recurs at periods of several seconds, to plasma at chromospheric temperatures of 104 K. This simple model can approximate a burst of energy release involving accelerated particles. Methods: Instantaneous time-dependent charge states of silicon and oxygen were calculated and used to synthesize the instantaneous and period-averaged spectra of Si IV and O IV. Results: The electron beam drives the plasma out of equilibrium. At electron densities of Ne = 1010 cm-3, the plasma is out of ionization equilibrium at all times in all cases we considered, while for a higher density of Ne = 1011 cm-3, ionization equilibrium can be reached toward the end of each period, depending on the conditions. In turn, the character of the period-averaged synthetic spectra also depends on the properties of the beam. While the case of κ = 2 results in spectra with strong or even dominant O IV, higher values of κ can approximate a range of observed TR spectra. Spectra similar to typically observed spectra, with the Si IV 1402.8 Å line about a factor 5 higher than O IV 1401.2 Å, are obtained for κ = 3. An even higher value of κ = 5 results in spectra that are exclusively dominated by Si IV, with negligible O IV emission. This is a possible interpretation of the TR spectra of UV (Ellerman) bursts, although an interpretation that requires a density that is 1-3 orders of magnitude lower than for equilibrium estimates. Movies associated to Fig. A.1 are available at http://https://www.aanda.org

  1. Tethys and Annex IV Progress Report for FY 2012

    Energy Technology Data Exchange (ETDEWEB)

    Hanna, Luke A.; Butner, R. Scott; Whiting, Jonathan M.; Copping, Andrea E.

    2013-09-01

    The marine and hydrokinetic (MHK) environmental Impacts Knowledge Management System, dubbed “Tethys” after the mythical Greek titaness of the seas, is being developed by the Pacific Northwest National Laboratory (PNNL) to support the U.S. Department of Energy’s Wind and Water Power Program (WWPP). Functioning as a smart database, Tethys enables its users to identify key words or terms to help gather, organize and make available information and data pertaining to the environmental effects of MHK and offshore wind (OSW) energy development. By providing and categorizing relevant publications within a simple and searchable database, Tethys acts as a dissemination channel for information and data which can be utilized by regulators, project developers and researchers to minimize the environmental risks associated with offshore renewable energy developments and attempt to streamline the permitting process. Tethys also houses a separate content-related Annex IV data base with identical functionality to the Tethys knowledge base. Annex IV is a collaborative project among member nations of the International Energy Agency (IEA) Ocean Energy Systems – Implementing Agreement (OES-IA) that examines the environmental effects of ocean energy devices and projects. The U.S. Department of Energy leads the Annex IV working with federal partners such as the Federal Energy Regulatory Commission (FERC), the Bureau of Ocean Energy Management (BOEM), and the National Oceanic Atmospheric Administration (NOAA). While the Annex IV database contains technical reports and journal articles, it is primarily focused on the collection of project site and research study metadata forms (completed by MHK researchers and developers around the world, and collected by PNNL) which provide information on environmental studies and the current progress of the various international MHK developments in the Annex IV member nations. The purpose of this report is to provide a summary of the content

  2. Hereditary sensory and autonomic neuropathy type IV and orthopaedic complications.

    Science.gov (United States)

    Kim, W; Guinot, A; Marleix, S; Chapuis, M; Fraisse, B; Violas, P

    2013-11-01

    Hereditary sensory and autonomic neuropathy type IV (HSAN-IV) is a very rare autosomal recessive disorder characterized by recurrent episodes of unexplained fever, extensive anhidrosis, total insensitivity to pain, hypotonia, and mental retardation. The most frequent complications of this disease are corneal scarring, multiple fractures, joint deformities, osteomyelitis, and disabling self-mutilations. We reported the case of a 12-year-old boy. The goal was to discuss our decision-making and compare this case with cases described in the literature. Copyright © 2013 Elsevier Masson SAS. All rights reserved.

  3. Improvement of Steam Generator Reliability for GEN-IV SFR

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Seong O; Kim Se Yun; Kim, Seok Hoon; Eoh, Jae Hyuk; Lee, Hyeong Yeon; Choi, Byung Seon

    2005-11-15

    The R and D items performed in this study were selected from the R and D task of ' Reliability improvement of Steam Generator' of GEN-IV SFR Component Design and BOP. Since this project deals with one of the most important issues for a GEN-IV SFR system, it needs to enhance the domestic technical backgrounds associated with the corresponding R and D items even for a very short period by 2005. This study provides the R and D results for i) Development of assessment methodology for dissimilar metal weld and ii) Development of multi-dimensional simulation methodology for a SWR event in a SFR steam generator.

  4. Improvement of Steam Generator Reliability for GEN-IV SFR

    International Nuclear Information System (INIS)

    Kim, Seong O; Kim Se Yun; Kim, Seok Hoon; Eoh, Jae Hyuk; Lee, Hyeong Yeon; Choi, Byung Seon

    2005-11-01

    The R and D items performed in this study were selected from the R and D task of ' Reliability improvement of Steam Generator' of GEN-IV SFR Component Design and BOP. Since this project deals with one of the most important issues for a GEN-IV SFR system, it needs to enhance the domestic technical backgrounds associated with the corresponding R and D items even for a very short period by 2005. This study provides the R and D results for i) Development of assessment methodology for dissimilar metal weld and ii) Development of multi-dimensional simulation methodology for a SWR event in a SFR steam generator

  5. Synthesis and reactivity of triscyclopentadienyl uranium (III) and (IV) complexes

    International Nuclear Information System (INIS)

    Berthet, J.C.

    1992-01-01

    The reactions of (RC 5 H 4 ) 3 U with R=trimethylsilylcyclopentadienyl or tertiobutylcyclopentadienyl are studied for the synthesis of new uranium organometallic compounds. Reactions with sodium hydride are first described uranium (III) anionic hydrides obtained are oxidized for synthesis of stable uranium (IV) organometallic hydrides. Stability of these compounds is discussed. Reactivity of these uranium (III) and (IV) hydrides are studied. Formation of new binuclear compounds with strong U-O and U-N bonds is examined and crystal structure are presented. Monocyclooctatetraenylic uranium complexes are also investigated

  6. Solutions of group IV elements in liquid lithium

    International Nuclear Information System (INIS)

    Dadd, A.T.; Hubberstey, P.; Roberts, P.G.

    1982-01-01

    The solubilities of tin (0.00 = 22 Sn 5 . A simple thermochemical cycle is used to demonstrate that, whereas carbon dissolves endothermically in both liquid lithium and liquid sodium, the heavier Group IV elements dissolve exothermically. A similar cycle is used to derive solvation enthalpies (for the neutral gaseous species) for all Group IV elements in the two solvents. The trend in solvation enthalpy: C > Si > Ge > Sn > Pb is indicative of a diminishing affinity of solvent for solute and is attributed to the increasing metallic character of the solute as the Group is descended. (author)

  7. Why IV Setup for Stream Ciphers is Difficult

    DEFF Research Database (Denmark)

    Zenner, Erik

    2007-01-01

    In recent years, the initialization vector (IV) setup has proven to be the most vulnerable point when designing secure stream ciphers. In this paper, we take a look at possible reasons why this is the case, identifying numerous open research problems in cryptography.......In recent years, the initialization vector (IV) setup has proven to be the most vulnerable point when designing secure stream ciphers. In this paper, we take a look at possible reasons why this is the case, identifying numerous open research problems in cryptography....

  8. Determination of free acid in plutonium (IV) solutions - thermometrically, potentiometrically

    International Nuclear Information System (INIS)

    Williams, T.L.; Tucker, G.M.; Huff, G.A.; Jordan, L.G.

    1981-09-01

    The thermometric titration technique was found to offer certain advantages over potentiometry in the determination of free acid in Pu(IV) solutions. The thermometric technique was applied to the determination of free acid in plutonium nitrate solutions using potassium fluoride to suppress the hydrolytic interference of plutonium(IV). The results indicate that 0.2 to 2.0 milliequivalents of free acid can be determined with acceptable bias and precision in solutions containing up to 30 milligrams of plutonium. In contrast, neither the thermometric nor the potentiometric technique was suitable for samples containing more than eight milligrams of plutonium complexed with potassium oxalate

  9. Vanadium(IV)-stimulated hydrolysis of 2,3-diphosphoglycerate.

    Science.gov (United States)

    Stankiewicz, P J

    1989-05-01

    Vanadium(IV) stimulates the hydrolysis of 2,3-diphosphoglycerate at 23 degrees C. The pH optimum is 5.0. Reactions were analyzed by enzymatic and phosphate release assays. The products of 2,3-diphosphoglycerate hydrolysis are inorganic phosphate and 3-phosphoglycerate. The reaction is inhibited by high concentrations of 2,3-diphosphoglycerate and an equation has been formulated that describes the kinetic constants for this reaction at pH 7. The possible relevance of the reaction to the therapeutic lowering by vanadium(IV) of red cell 2,3-diphosphoglycerate in sickle-cell disease is discussed.

  10. Sequence Domain Harmonic Modeling of Type-IV Wind Turbines

    DEFF Research Database (Denmark)

    Guest, Emerson; Jensen, Kim Høj; Rasmussen, Tonny Wederberg

    2017-01-01

    -sampled pulsewidth modulation and an analysis of converter generated voltage harmonics due to compensated dead-time. The decoupling capabilities of the proposed the SD harmonic model are verified through a power quality (PQ) assessment of a 3MW Type-IV wind turbine. The assessment shows that the magnitude and phase...... of low-order odd converter generated voltage harmonics are dependent on the converter operating point and the phase of the fundamental component of converter current respectively. The SD harmonic model can be used to make PQ assessments of Type-IV wind turbines or incorporated into harmonic load flows...... for computation of PQ in wind power plants....

  11. 17 CFR Table IV to Subpart E of... - Civil Monetary Penalty Inflation Adjustments

    Science.gov (United States)

    2010-04-01

    ... Inflation Adjustments IV Table IV to Subpart E of Part 201 Commodity and Securities Exchanges SECURITIES AND... Table IV to Subpart E of Part 201—Civil Monetary Penalty Inflation Adjustments Table IV to Subpart E U.S. Code citation Civil monetary penalty inflation adjustments Civil monetary penalty description Year...

  12. Estimativa da produtividade em soldagem pelo Método de Monte Carlo Productivity estimation in welding by Monte Carlo Method

    Directory of Open Access Journals (Sweden)

    José Luiz Ferreira Martins

    2011-09-01

    Full Text Available O objetivo deste artigo é o de analisar a viabilidade da utilização do método de Monte Carlo para estimar a produtividade na soldagem de tubulações industriais de aço carbono com base em amostras pequenas. O estudo foi realizado através de uma análise de uma amostra de referência contendo dados de produtividade de 160 juntas soldadas pelo processo Eletrodo Revestido na REDUC (refinaria de Duque de Caxias, utilizando o software ControlTub 5.3. A partir desses dados foram retiradas de forma aleatória, amostras com, respectivamente, 10, 15 e 20 elementos e executadas simulações pelo método de Monte Carlo. Comparando-se os resultados da amostra com 160 elementos e os dados gerados por simulação se observa que bons resultados podem ser obtidos usando o método de Monte Carlo para estimativa da produtividade da soldagem. Por outro lado, na indústria da construção brasileira o valor da média de produtividade é normalmente usado como um indicador de produtividade e é baseado em dados históricos de outros projetos coletados e avaliados somente após a conclusão do projeto, o que é uma limitação. Este artigo apresenta uma ferramenta para avaliação da execução em tempo real, permitindo ajustes nas estimativas e monitoramento de produtividade durante o empreendimento. Da mesma forma, em licitações, orçamentos e estimativas de prazo, a utilização desta técnica permite a adoção de outras estimativas diferentes da produtividade média, que é comumente usada e como alternativa, se sugerem três critérios: produtividade otimista, média e pessimista.The aim of this article is to analyze the feasibility of using Monte Carlo method to estimate productivity in industrial pipes welding of carbon steel based on small samples. The study was carried out through an analysis of a reference sample containing productivity data of 160 welded joints by SMAW process in REDUC (Duque de Caxias Refinery, using ControlTub 5.3 software

  13. Compactação causada pelo manejo de plantas invasoras em latossolo vermelho-amarelo cultivado com cafeeiros

    Directory of Open Access Journals (Sweden)

    Paula Sant'Anna Moreira Pais

    2011-12-01

    Full Text Available O manejo de plantas invasoras é considerado uma das principais atividades que promovem degradação da estrutura do solo em lavouras cafeeiras, devido à compactação do solo causada pelas operações de controle de plantas invasoras. O objetivo deste estudo foi determinar o modelo de capacidade de suporte de carga para o manejo de plantas invasoras sem capina, bem como, utilizando esse modelo, qual manejo de plantas invasoras causa menor ou maior compactação do solo. Este estudo foi realizado em um Latossolo Vermelho-Amarelo (LVA cultivado com cafeeiros da cutivar Topázio MG 1190 desde 2006, localizado na Fazenda Experimental da EPAMIG, na comunidade Farias, em Lavras-MG. Os manejos de plantas invasoras avaliados foram: na linha de tráfego da entrelinha - grade de discos, herbicida de pós-emergência, herbicida de pré-emergência, roçadora e trincha; e no centro da entrelinha, onde não houve tráfego - amendoim forrageiro (Arachis pintoi, braquiária (Brachiaria decumbens, capina manual, crotalária (Crotalaria juncea e soja (Glicine max L. A amostragem consistiu de duas etapas: uma para determinar o modelo de capacidade de suporte de carga para o manejo de plantas invasoras sem capina; e outra para avaliar a compactação promovida pelos outros manejos de plantas invasoras. A fim de determinar o modelo de capacidade de suporte de carga para o manejo sem capina, foram coletadas no centro da entrelinha 20 amostras com estrutura indeformada nas profundidades de 0-3, 10-13 e 25-28 cm, totalizando 60 amostras. Essas amostras foram submetidas ao ensaio de compressão uniaxial para obter as pressões de pré-consolidação e as umidades volumétricas, que foram usadas para determinar o modelo de capacidade de suporte de carga. Para determinar a compactação causada pelos manejos de plantas invasoras, realizados por meio do controle mecânico, foram coletadas em janeiro de 2010, nas linhas de tráfego das entrelinhas, 180 amostras com

  14. Mecanismos da intoxicação do fígado de rato causada pelo gossipol

    Directory of Open Access Journals (Sweden)

    Wanderson Luís de Carvalho

    2013-03-01

    Full Text Available O fígado desempenha uma função central no metabolismo devido à sua interposição entre o trato digestivo e a circulação geral do organismo. Ele é também o principal órgão envolvido na biotransformação de substâncias exógenas (xenobióticos, com capacidade de converter compostos hidrofóbicos em hidrossolúveis, mais facilmente eliminados pelo organismo. O gossipol é uma substância fenólica tóxica presente na semente de algodão (Gossypium sp. Com o objetivo de estudar os mecanismos envolvidos na hepatotoxicidade do gossipol avaliou-se os seus efeitos no sistema antioxidante do fígado de ratos no que diz respeito ao estresse oxidativo e aspectos histopatológicos. Foram utilizados ratos machos da linhagem Wistar, separados em dois grupos, sendo que um recebeu óleo de canola (veículo, grupo Controle e o outro recebeu gossipol na dosagem de 40 mg/kg de peso vivo do animal por 15 dias (grupo Tratado. O tratamento com gossipol promoveu alterações na atividade sérica das enzimas marcadoras de dano hepático e um significativo estresse oxidativo caracterizado pela diminuição nos níveis da glutationa reduzida (GSH e consequente aumento da glutationa oxidada (GSSG, incluindo, ainda, danos à membrana plasmática e de organelas demonstrados pela peroxidação lipídica. O resultado da avaliação histopatológica demonstrou degeneração dos hepatócitos.

  15. A salvação pelo Rock: sobre a "cena underground" dos jovens evangélicos no Brasil

    Directory of Open Access Journals (Sweden)

    Airton Luiz Jungblut

    2007-12-01

    Full Text Available O rápido crescimento do "rebanho" evangélico, nas últimas décadas no Brasil, deve muito à surpreendente avidez com que grupos e indivíduos que participaram desse processo se apropriaram de tudo aquilo que, produzido para finalidades mundanas, mostrava-se evangelisticamente sedutor. Busca-se discutir neste artigo os problemas identitários que surgem nesse processo, atentando, especificamente, para a utilização da música "rock" por jovens evangélicos. Como conseguem instalar neste meio tal estilo musical, antes tão inaceitável às instituições representantes dessa modalidade de cristianismo? Como lidam identitariamente com práticas e atitudes que acompanham a cultura "rock and roll", como o sexo desregrado, consumo de drogas, rebeldia e, por vezes, alguma simpatia pelo satanismo? Que compósito identitário resulta desse inusitado encontro entre universos culturais aparentemente tão inconciliáveis?The fast growth of the evangelical "flock" on the last few decades in Brazil, owes much to the surprising avidity with which groups and individuals that participated of that process appropriated of all which, produced for mundane purposes, was evangelistically seductive. The main issue to be treated in this article are the identity problems that arise on this process, attempting specifically to the use of "rock" music among evangelical youth. How can they install such musical style until now so unacceptable to the representative institutions of this Christianity modality? How do they work their identities with those practices and attitudes that come with "rock and roll" culture like messy sex, drugs, rebelliousness and, some times, a sympaty with satanism? What is the resulting identity composite of this unusual encounter between seemingly so incompatible cultural universes?

  16. Infestação pelo mosquito Aedes aegypti (Diptera: Culicidae na cidade de Chapecó – SC

    Directory of Open Access Journals (Sweden)

    Junir Antonio Lutinski

    2013-03-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2013v26n2p143   A dengue se tornou um problema de saúde pública e vem causando preocupação aos profissionais de saúde. Este estudo visou a avaliar os fatores condicionantes para a ocorrência de dengue na cidade de Chapecó – SC. Foram analisadas as informações disponíveis no Sistema de Informações de Febre Amarela e Dengue (SISFAD e foi realizada uma pesquisa a partir de um questionário semiestruturado aplicado à população. As análises indicam a associação da infestação pelo mosquito transmissor da dengue com o lixo inadequadamente tratado e com os depósitos de captação de água da chuva, assim como com o ambiente residencial. A prevenção à dengue no município de Chapecó envolve a implantação de políticas públicas de educação ambiental em saúde para a separação e destinação adequada dos resíduos sólidos e melhorias no sistema de abastecimento público de água. Campanhas educativas voltadas aos cuidados no ambiente domiciliar também são necessárias.

  17. ALÉM DAS RUAS: IMAGINAÇÃO E ESPAÇOS DA CIDADE PELO SKATE

    Directory of Open Access Journals (Sweden)

    Guilherme Michelotto Böes

    2016-03-01

    Full Text Available As cidades metropolitanas estão inscritas nas novas formas de uso público urbano entre as práticas que desafiam as representações culturais e sociais, configurações dos espaços urbanos representados pela arquitetura das cidades que moldam os espaços. Essas modificações apontam a mudança histórica da representação entre os indivíduos sociais. Devemos identificar os desafios com que as codificações dos espaços culturais da cidade se encontram em suas novas propriedades de direito de uso e manifestação social, já que produzem narrativas que alteram a produção dos espaços na inscrição de identidade social. Práticas cotidianas possibilitam situações, essas com que deparamos na forma de organização social da cidade, tanto formalmente ou informalmente administrada, o local da estrutura dos sistemas de valores na referência ao espaço/tempo de ser utilizado. As ruas imaginadas, apropriadas pelos skatistas, como narrativa da prática cotidiana nos espaços públicos urbanos, que cada vez mais são abandonados em detrimento aos espaços privados. Desse modo, pode o skate trazer a discussão sobre o urbano, apontando que as identidades culturais nos espaços públicos estão longe da percepção ilícita de práticas culturais urbanas. Assim o skate pode então encontrar o diálogo entre a imaginação da experiência urbana contemporânea nas ruas das cidades.

  18. Detecção de manchas de sangue pelo luminol onde houve entintamento das paredes – estudo de caso

    Directory of Open Access Journals (Sweden)

    Geraldo Elias Miranda

    2016-04-01

    Full Text Available O luminol é um teste presuntivo para detecção de manchas de sangue, muito sensível, efetivo e seletivo. O objetivo deste trabalho é avaliar a eficácia do luminol na detecção de sangue após o entintamento das paredes em um local onde ocorreu um homicídio. Os peritos se dirigiram para a casa do suspeito e com o uso de uma espátula metálica retiraram parte do revestimento da parede do quarto e após nova aplicação do luminol observaram a mancha branco-azulada, intensa e de duração típica de sangue latente. Os fragmentos retirados da parede foram enviados para o laboratório de DNA que confirmou tratar-se de sangue da vítima. A aplicação dessa técnica no caso em questão encontrando manchas de sangue sob a pintura ajudou a perícia a traçar a dinâmica do evento, ficando mais clara a posição da vítima quando foi alvejada com tiros pelo seu agressor além de ligar aquele local à vítima. O luminol não é capaz de detectar sangue que está sob a tinta da parede. A deteção do sangue latente somente ocorre quando a camada de tinta é retirada.

  19. Elementos indicativos de abuso sexual na infância obtidos pelo método Rorschach

    Directory of Open Access Journals (Sweden)

    Maria da Graça Gastal Borges Fortes

    2008-01-01

    Full Text Available Objetivo: Determinar indicativos de abuso sexual infantil através do Método Rorschach em crianças atendidas pela Equipe de Proteção à Criança do Hospital de Clínicas de Porto Alegre no período entre 2002 e 2003. Métodos: Estudo retrospectivo qualitativo e quantitativo de nove crianças, com idades entre quatro anos e seis meses e onze anos, abusadas sexualmente, cuja ocorrência do fato foi verbalizada pelas próprias ou por seus responsáveis. Todas tiveram confirmação por médicos pediatras da própria instituição do abuso sexual sofrido. Todos os pacientes foram testados pelo método Rorschach com resultados supervisionados por profissional do Serviço de Psicologia da instituição. A partir do laudo e das respostas encontradas nos protocolos foram criadas categorias para o estu-do. Para a codificação das respostas foi utilizado o sistema de classificação de Klopfer. Resultados: O Método Rorschach forneceu indicativos de abuso sexual nas nove crianças estudadas. Depressão, ansiedade, impulsividade, dificuldades nos relacionamentos, foram características de personalidade que apareceram com maior freqüência. Na análise dos protocolos surgiram conteúdos traumáti-cos, tais como sangue, sexo, morbidez, medo e movimento agressivo. Conclusões: Este trabalho mostrou que o Método Rorschach pode fornecer indicativos de abuso sexual. Pela análise dos laudos se observou que as crianças estudadas apresentaram dificuldades relativas à estruturação de uma personalidade saudável.

  20. Evaluación del desarrollo testicular y medidas morfométricas en ovinos de pelo colombiano

    Directory of Open Access Journals (Sweden)

    Amado Espitia-Pacheco

    2018-01-01

    Full Text Available Las medidas corporales en ovinos son útiles como indicador de tipo y función, permiten mejorar la selección. Se conocen estudios biométricos en ovinos que, relacionan la importancia de estas medidas con algunas variables productivas. El objetivo del presente estudio fue evaluar el desarrollo testicular y su relación con los parámetros morfométricos en ovinos de pelo colombiano, en el municipio de Sampués, Sucre, Colombia. Se utilizaron doce ovinos machos (destetados nacidos entre febrero y abril del 2014, sobre los cuales se tomaron las siguientes medidas: circunferencia escrotal (CE, peso corporal (PC, altura a la grupa (AG, alzada a la cruz (AC y longitud testicular derecha e izquierda (LTD y LTI, cada veintiocho días hasta los doce meses de edad. Para CE se efectuó análisis de regresión múltiple (RM del PC; AG; AC; LT. Para describir la variación del LT, el modelo incluyó solo las variables PC; AG; AC. El grado de asociación entre las variables estudiadas, se realizó por medio de correlación Pearson. La circunferencia escrotal mostró una correlación alta con los parámetros morfométricos evaluados. Dentro del análisis de RM, el PC influyó en la variable CE (p<0,05, mientras que las demás variables no influyeron significativamente. Según el coeficiente de regresión asociado a la medición, por cada kg de incremento en PC, hubo un correspondiente aumento de 0,09 cm en la CE.

  1. MANEJO DE DEJETOS SÓLIDOS DE POEDEIRAS PELO PROCESSO DE BIODIGESTÃO ANAERÓBICA

    Directory of Open Access Journals (Sweden)

    Carlos Fernando Lemos

    2012-07-01

    Full Text Available As indústrias avícolas de poedeiras, além de ovos, geram anualmente um grande volume de resíduos na forma de esterco. O esterco de ave poedeira é o principal resíduo gerado na indústria de produção de ovos e requer uma infraestrutura para o tratamento adequado. Sendo assim, o objetivo desta revisão visa abordar o manejo de resíduos sólidos de poedeira, em particular com o uso do biodigestor como forma de minimizar os impactos ambientais negativos causados pela atividade avícola. Nesse sentido, ressalta-se que a biodigestão anaeróbica ajuda a minimizar os impactos negativos que são gerados ao meio ambiente, reduzindo assim os riscos ambientais e melhorando a qualidade de vida. Salienta-se, todavia, que, existem casos ainda em que estes resíduos têm sido utilizados como fertilizantes, mas sem prévio tratamento e controle sanitário antes da aplicação no solo. Os dejetos de aviários apresentam o potencial de ser tanto um recurso como um poluente. Em resumo, sob o aspecto das práticas adequadas de manejo dos resíduos, o biodigestor é uma alternativa para o tratamento do esterco de ave poedeira. Conclui-se que o manejo e tratamento de resíduos sólidos de poedeiras pelo processo de biodigestão anaeróbica representa uma forma ambientalmente recomendável.

  2. Kinetics study on the reduction of trace plutonium (IV) by hydroxylamine in nitric acid media

    International Nuclear Information System (INIS)

    Fei Hongcheng; Luo Longjun

    1998-01-01

    Reaction kinetics of trace Pu(IV) (c(Pu(IV)≤10 -5 mol/L) with hydroxylamine in nitric acid solution is investigated. The effects of concentrations of Pu(IV), Pu(III), NO 3 - , H + and hydroxylamine on the reduction rate of trace Pu(IV) are examined. The rate law of reaction of trace Pu(IV) with hydroxylamine is obtained. The reduction rate of Pu(IV) increases obviously with increasing temperature and the apparent activation energy with k' 0 is equal to 147 kJ/mol. The reaction mechanism of trace Pu(IV) with hydroxylamine is discussed

  3. Uso de condom feminino por mulheres infectadas pelo HIV Female condom use among HIV-infected women

    Directory of Open Access Journals (Sweden)

    Jarbas Magalhães

    2003-07-01

    Full Text Available OBJETIVO: avaliar a aceitabilidade, a adesão e a experiência com o uso de condom feminino (CF entre mulheres infectadas pelo HIV. MÉTODO: estudo descritivo prospectivo com 76 mulheres infectadas pelo HIV atendidas no CAISM/UNICAMP e no Centro Corsini de Campinas. Após entrevista de triagem e concordando em participar, as voluntárias receberam calendário para registro das relações sexuais e uso de condom masculino (CM. Após 30 dias, compareceram à visita de treinamento com colocação do CF em modelo pélvico, trazendo o diário do ciclo anterior, considerado controle. Aplicou-se questionário estruturado após 30, 60 e 90 dias, recolhendo-se sempre o diário de registro das relações sexuais e uso de CF ou CM. Usaram-se os testes de c², exato de Fisher, McNemar e Friedman para amostras emparelhadas na análise estatística. RESULTADOS: predominaram as mulheres jovens, de baixa escolaridade, que moravam com o parceiro. Observou-se taxa de continuidade de uso de 52%, ao longo de 90 dias. O uso de CF, em metade das relações sexuais em cada período de estudo, permaneceu estável nos 90 dias. Houve significativa diminuição da proporção média das relações sexuais desprotegidas (de 14% para 6%, sem uso de CM ou CF, aos 90 dias. As dificuldades iniciais no manuseio do CF foram superadas com o tempo. Os casais sorodiscordantes tiveram maior proporção de relações protegidas que os casais soroconcordantes, porém a diferença não foi significativa. As mulheres que relataram uso prévio consistente de CM apresentaram número significantemente maior de relações protegidas com CF. CONCLUSÕES: a oferta do CF foi capaz de reduzir as relações sexuais desprotegidas entre mulheres infectadas pelo HIV, que se mostraram motivadas e receptivas a este método.PURPOSE: to evaluate acceptability, adhesion and experience with the use of female condom (FC among HIV-infected women. METHODS: prospective descriptive study with 76 HIV

  4. Synthesis and spectral properties of axially substituted zirconium(IV) and hafnium(IV) water soluble phthalocyanines in solutions

    International Nuclear Information System (INIS)

    Gerasymchuk, Y.S.; Volkov, S.V.; Chernii, V.Ya.; Tomachynski, L.A.; Radzki, St.

    2004-01-01

    Methods of synthesis of novel water soluble axially substituted Zr(IV) and Hf(IV) phthalocyanines with gallic, 5-sulfosalicyllic, oxalic acids, and methyl ester of gallic acid as axial ligands coordinated to the central atom metal of phthalocyanine are presented. The absorption spectra of complex solutions in various solvents were characterized. The dependence of the spectral red shift from Reichardt's empirical polarity parameter is described. The deviation from the linearity of Beer-Bouguer-Lambert law was investigated for the range of concentration 5x10 -6 to 10x10 -5 M. Fluorescent properties of axially substituted phthalocyaninato metal complexes in DMSO solutions were investigated

  5. Apparent formation constants of Pu(IV) and Th(IV) with humic acids determined by solvent extraction method

    Energy Technology Data Exchange (ETDEWEB)

    Sasaki, T.; Aoyama, S.; Yoshida, H.; Kobayashi, T.; Takagi, I. [Tokyo Univ. (Japan). Dept. of Nuclear Engineering; Kulyako, Y.; Samsonov, M.; Miyasoedov, B. [Russian Academy of Sciences, Moscow (Russian Federation). V. I. Vernadsky Institute of Geochemistry and Analytical Chemistry (GEOKHI); Moriyama, H. [Kyoto Univ. (Japan). Research Reactor Inst.

    2012-07-01

    Apparent formation constants of Pu(IV) and Th(IV) with two kinds of humic acids were determined in 0.1 M NaClO{sub 4} at 25 C using a solvent extraction method with thenoyltrifluoroacetone in xylene. The acid dissociation constants of humic acids were also measured by potentiometric titration and used as the degree of dissociation for calculating the formation constants. The effect of solution conditions, such as the pH, the initial metal and humic acid concentrations, and the ionic strength, on the formation constants was examined. The obtained data were compared with the ones in the literature. (orig.)

  6. Måleegenskaper ved den norske versjonen av ADHD Rating Scale IV, Skoleversjon (ADHD-RS-IV Skole)

    OpenAIRE

    Kornør, Hege; Bøe, Tormod

    2011-01-01

    - Beskrivelse. ADHD-RS-IV Skole er et spørreskjema som skal fylles ut av lærere eller førskolelærere for å fange opp ADHD-symptomer hos barn og ungdom. Spørreskjemaet har 18 ledd med fire svaralternativer. Det tar under 20 minutter å fylle ut. Hovedskalaen og de to delskalaene skåres ved å summere enkeltskårer. Kompetansekrav for bruk av ADHD-RS-IV inkluderer generell opplæring i testbruk, samt yrkesstatus som psykolog, lege, annet helsepersonell med utdanning på mastergradsnivå, spesialpe...

  7. Måleegenskaper ved den norske versjonen av ADHD Rating Scale – IV Hjemmeversjon (ADHD-RS-IV Hjemme)

    OpenAIRE

    Kornør, Hege; Bøe, Tormod

    2011-01-01

    - Beskrivelse. ADHD-RS-IV Hjemme er et spørreskjema som skal fylles ut av mor, far, verge eller besteforeldre for å fange opp ADHD-symptomer hos barn og ungdom. Spørreskjemaet har 18 ledd med fire svaralternativer. Det tar under 20 minutter å fylle ut. Hovedskalaen og de to delskalaene skåres ved å summere enkeltskårer. Kompetansekrav for bruk av ADHD-RS-IV inkluderer generell opplæring i testbruk, samt yrkesstatus som psykolog, lege, annet helsepersonell med utdanning på ...

  8. Electrochemistry and Spectroelectrochemistry of the Pu (III/IV) and (IV/VI) Couples in Nitric Acid Systems

    Energy Technology Data Exchange (ETDEWEB)

    Lines, Amanda M. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Adami, Susan R. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Casella, Amanda J. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Sinkov, Sergey I. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Lumetta, Gregg J. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Bryan, Samuel A. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352

    2017-09-20

    The solution chemistry of Pu in nitric acid is explored via electrochemistry and spectroelectrochemistry. By utilizing and comparing these techniques, an improved understanding of Pu behavior and its dependence on nitric acid concentration can be achieved. Here the Pu (III/IV) couple is characterized using cyclic voltammetry, square wave voltammetry, and a spectroelectrochemical Nernst step. Results indicate the formal reduction potential of the couple shifts negative with increasing acid concentration and reversible electrochemistry is no longer attainable above 6 M HNO3. Spectroelectrochemistry is also used to explore the irreversible oxidation of Pu(IV) to Pu(VI) and shine light on the mechanism and acid dependence of the redox reaction.

  9. View from... Group IV Photonics: Industry meets academia

    Science.gov (United States)

    Pile, David

    2012-12-01

    Silicon photonics and devices based on group IV elements are overcoming the tough economic downturns that have rocked industry over the past 12 years. Cross fertilization between academia and industry may lead to new devices that are both innovative and profitable.

  10. Gérard Genette : a escrita de Figures IV

    OpenAIRE

    Eiras, Pedro

    2012-01-01

    This article reflects on Genette's most recent work and his theorisation on his own work (its unity and heterogeneity) and the recent multiplication of the areas of study (from music to painting, from Stendhal to Proust). Note is also made of Genette's idiosyncrasy in Figures IV.

  11. Formation, characterization, and stability of plutonium (IV) colloid

    International Nuclear Information System (INIS)

    Hobart, D.E.; Morris, D.E.; Palmer, P.D.; Newton, T.W.

    1989-01-01

    Plutonium is expected to be a major component of the waste element package in any high-level nuclear waste repository. Plutonium(IV) is known to form colloids under chemical conditions similar to those found in typical groundwaters. In the event of a breach of a repository, these colloids represent a source of radionuclide transport to the far-field environment, in parallel with the transport of dissolved waste element species. In addition, the colloids may decompose or disaggregate into soluble ionic species. Thus, colloids represent an additional term in determining waste element solubility limits. A thorough characterization of the physical and chemical properties of these colloids under relevant conditions is essential to assess the concentration limits and transport mechanisms for the waste elements at the proposed Yucca Mountain Repository site. This report is concerned primarily with recent results obtained by the Yucca Mountain Project (YMP) Solubility Determination Task pertaining to the characterization of the structural and chemical properties of Pu(IV) colloid. Important results will be presented which provides further evidence that colloidal plutonium(IV) is structurally similar to plutonium dioxide and that colloidal plutonium(IV) is electrochemically reactive. 13 refs., 7 figs

  12. Parameter extraction from I-V characteristics of PV devices

    Energy Technology Data Exchange (ETDEWEB)

    Macabebe, Erees Queen B. [Department of Electronics, Computer and Communications Engineering, Ateneo de Manila University, Loyola Heights, Quezon City 1108 (Philippines); Department of Physics and Centre for Energy Research, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth 6031 (South Africa); Sheppard, Charles J. [Department of Physics, University of Johannesburg, PO Box 524, Auckland Park 2006 (South Africa); Dyk, E. Ernest van [Department of Physics and Centre for Energy Research, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth 6031 (South Africa)

    2011-01-15

    Device parameters such as series and shunt resistances, saturation current and diode ideality factor influence the behaviour of the current-voltage (I-V) characteristics of solar cells and photovoltaic modules. It is necessary to determine these parameters since performance parameters are derived from the I-V curve and information provided by the device parameters are useful in analyzing performance losses. This contribution presents device parameters of CuIn(Se,S){sub 2}- and Cu(In,Ga)(Se,S){sub 2}-based solar cells, as well as, CuInSe{sub 2}, mono- and multicrystalline silicon modules determined using a parameter extraction routine that employs Particle Swarm Optimization. The device parameters of the CuIn(Se,S){sub 2}- and Cu(In,Ga)(Se,S){sub 2}-based solar cells show that the contribution of recombination mechanisms exhibited by high saturation current when coupled with the effects of parasitic resistances result in lower maximum power and conversion efficiency. Device parameters of photovoltaic modules extracted from I-V characteristics obtained at higher temperature show increased saturation current. The extracted values also reflect the adverse effect of temperature on parasitic resistances. The parameters extracted from I-V curves offer an understanding of the different mechanisms involved in the operation of the devices. The parameter extraction routine utilized in this study is a useful tool in determining the device parameters which reveal the mechanisms affecting device performance. (author)

  13. Design and evaluation of a thorium (IV) selective optode

    International Nuclear Information System (INIS)

    Safavi, Afsaneh; Sadeghi, Marzieh

    2006-01-01

    A novel optical sensor has been proposed for sensitive determination of thorium (IV) ion in aqueous solutions. The thorium sensing membrane was prepared by incorporating 4-(p-nitrophenyl azo)-pyrocatechol (NAP) as ionophore in the plasticized PVC membrane containing tributyl phosphate (TBP) as plasticizer. The membrane responds to thorium ion by changing color reversibly from yellow to red-brown in glycine buffer solution at pH 3.5. The proposed sensor displays a linear range of 8.66 x 10 -6 -2.00 x 10 -4 M with a limit of detection of 6 x 10 -6 M. The response time of the optode was about 8.8-12.5 min, depending on the concentration of Th (IV) ions. The selectivity of optode to Th (IV) ions in glycine buffer is good. The sensor can readily be regenerated by exposure to a solution mixture of sodium fluoride and 5-sulfosalicylic acid (dihydrate) (0.01 M each). The optode is fully reversible. The proposed optode was applied to the determination of thorium (IV) in environmental water samples

  14. Outdoor Biology Instructional Strategies Trial Edition, Set IV.

    Science.gov (United States)

    Throgmorton, Larry, Ed.; And Others

    Eight games are included in the 24 activities in the Outdoor Biology Instructional Strategies (OBIS) Trial Edition Set IV. There are also simulations, crafts, biological techniques, and organism investigations focusing on animal and plant life in the forest, desert, and snow. Designed for small groups of children ages 10 to 15 from schools and…

  15. Court Culture during the Reign of Christian IV

    DEFF Research Database (Denmark)

    Olden-Jørgensen, Sebastian

    2007-01-01

    Court culture can be defined as a range of cultural forms (festival culture, painting, literature, music, architecture) employed for the enhancement of princely status and the communication of political messages. Christian IV evidently set great store on court culture beginning with his magnificent...

  16. Locally advanced breast cancer (stage III and stage IV)

    International Nuclear Information System (INIS)

    Baracat, F.F.; Grabert, H.; Lima, G.R. de; Pontes, M.; Ferraro, O.; Santana, A.; Brook, E.S.

    1987-01-01

    The results concerning to the treatment of 193 patients with locally advanced breast cancer-stage III and stage IV are analysed. All the patients were treated with radical radiotherapy plus total mastectomy about 6 weeks later; 53 pacients received also chemotherapy (CMF - 12 courses) and 52 were oophorectomized. (M.A.C) [pt

  17. Sargent-IV Project. Development of new methodologies for safety analysis of Generation IV reactors; Proyecto SARGEB-IV. Desarrollo de nuevas metodologias de analisis de seguridad para reactores de Generacion IV

    Energy Technology Data Exchange (ETDEWEB)

    Queral, C.; Gallego, E.; Jimenez, G.

    2013-07-01

    The main result of this paper is the proposal for the addition of new ingredients in the safety analysis methodologies for Generation-IV reactors that integrates the features of probabilistic safety analysis within deterministic. This ensures a higher degree of integration between the classical deterministic and probabilistic methodologies.

  18. The Oxidation of Dibenzothiophene using Oxidovanadium(IV ...

    African Journals Online (AJOL)

    ... and EPR also confirmed the presence of oxidovanadium(IV) within the nanofibres. Oxidation of dibenzothiophene (DBT) was investigated by varying the catalyst amount, substrate amount, oxidant and temperature, and the progress of oxidation was followed with a gas chromatograph fitted with a flame ionization detector.

  19. DSM-IV-defined common mental disorders: Association with HIV ...

    African Journals Online (AJOL)

    Psychiatric diagnoses of depression, anxiety and substance abuse disorders were based on the Diagnostic and Statistical Manual, 4th edition (DSM-IV). HIVrelated fears, perceived risk and behaviour change were measured using multi-item scales. We analysed forms of behaviour change that were appropriate for risk ...

  20. OGLE-IV Transient Search report 26 August 2016

    Science.gov (United States)

    Wyrzykowski, L.; Sitek, M.; Kostrzewa-Rutkowska, Z.; Udalski, A.; Kozlowski, S.; Klencki, J.

    2016-08-01

    The OGLE-IV Transient Detection System (Wyrzykowski et al. 2014, AcA,64,197; Kozlowski et al. 2013; Klencki et al. 2016, AcA, 66,15) announces resumption of operation in the beginning of 2016B season and discovery of 45 new on-going transients.

  1. OGLE-IV Transient Search report 07 August 2015

    Science.gov (United States)

    Wyrzykowski, L.; Kostrzewa-Rutkowska, Z.; Udalski, A.; Kozlowski, S.; Poleski, R.; Pietrzynski, G.; Sitek, M.

    2015-08-01

    The OGLE-IV Transient Detection System (Wyrzykowski et al. 2014, AcA,64,197; Kozlowski et al. 2013) reports the discovery of 10 new transients. Most of them appeared near or on top of apparent galaxies and their light curves resemble those of supernovae near or after their peak brightness.

  2. Studies on the genus Atriplex L. (Amaranthaceae) in Italy. IV ...

    African Journals Online (AJOL)

    Studies on the genus Atriplex L. (Amaranthaceae) in Italy. IV. Atriplex bocconei Guss. – Atriplex bocconei Guss. is here typified on one herbarium specimen kept in NAP. The identity of the species is also clarified on the basis of literature analysis and examination of type material and other specimens that allowed to include it ...

  3. Coefficient of work-hardening in stage-IV

    CSIR Research Space (South Africa)

    Nabarro, FRN

    1994-04-15

    Full Text Available The theory of work hardening in stage IV depends on the relation between the relative misorientation Psi of neighbouring subgrains and the plastic strain gamma (Psi = B gamma exp). The value of the constant B is suggested to be better related...

  4. Effect of Cerium(IV)-Surfactant Reaction in Foam Decontamination

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Han Beom; Jung, Chong-Hun; Yoon, In-Ho; Kim, Chorong; Choi, Wang-Kyu [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2015-05-15

    Using foams allows the decommissioning of complex shaped facilities. The decontamination foam comprises at least one surfactant to generate the foam and one or more chemical reactants to achieve the dissolution of the contaminants at the solid surface. In order to improve the efficiency of decontamination foam, the present study attempts to find the optimum condition of chemical reagents to the foaming solution. The corrosion rate of radioactive nuclides contaminated stainless steel metal is very important factor for the foam decontamination process. The goal of this study is to develop the decontamination process for contaminated stainless steel in medium of nitric acid. Stainless steel needs a strong oxidizing agent such as Ce(IV) ion and the effects of cerium(IV). Surfactant interaction involved in foam decontamination and finally the improvement brought by formulation science. The formulation of foams loaded with strong oxidizing reagents such as Ce(IV) is an important factor. The enhanced decontamination properties of nitric acid with Ce(IV) additive on stainless steel is well known in liquid mediums. stainless steel metal is an important aspect in the foam decontamination process.

  5. ORIGINAL ARTICLES DSM-IV-defined common mental disorders ...

    African Journals Online (AJOL)

    mental disorders may increase HIV risk (e.g. by impairing risk perception and impulse control), ... analysis of the South African Stress and Health (SASH) study, a nationally ... taking more care over things touched; (iv) avoiding certain ... individually to assess potential differences between appropriate .... Gender (%). Male.

  6. Counsellors Respond to the DSM-IV-TR

    Science.gov (United States)

    Strong, Tom; Gaete, Joaquin; Sametband, Ines N.; French, Jared; Eeson, Jen

    2012-01-01

    The Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) is an administrative fact for many counsellors. This psychiatric approach to formulating client concerns runs counter to those used by counsellors of many approaches (e.g., systemic, feminist). Using an online survey of counsellors (N = 116), invited contributions to a website…

  7. IV Bach conference on radiation chemistry. Abstracts of reports

    International Nuclear Information System (INIS)

    2005-01-01

    IV Bach conference on radiation chemistry was conducted in the framework of the conference Physico-chemical foundations of new technologies of XXI century. Problems of radiolysis of modern polymeric materials, post-irradiation examination of different organic and inorganic compounds treated with ionizing radiation, equipment used for these examinations, application of data obtained in these researches were represented in reports [ru

  8. Description of the IV + V System Software Package.

    Science.gov (United States)

    Microcomputers for Information Management: An International Journal for Library and Information Services, 1984

    1984-01-01

    Describes the IV + V System, a software package designed by the Institut fur Maschinelle Dokumentation for the United Nations General Information Programme and UNISIST to support automation of local information and documentation services. Principle program features and functions outlined include input/output, databank, text image, output, and…

  9. Streptococcus agalactiae Serotype IV in Humans and Cattle, Northern Europe

    DEFF Research Database (Denmark)

    Lyhs, Ulrike; Kulkas, Laura; Katholm, Jorgen

    2016-01-01

    not differentiate between populations isolated from different host species. Isolates from humans and cattle differed in lactose fermentation, which is encoded on the accessory genome and represents an adaptation to the bovine mammary gland. Serotype IV-ST196 isolates were obtained from multiple dairy herds in both...

  10. Title IV Indian Education Program Evaluation, 1985-86.

    Science.gov (United States)

    Albuquerque Public Schools, NM. Planning, Research and Accountability.

    Public schools in Albuquerque, New Mexico, used a Title IV Part A grant to assist American Indian elementary and secondary school students in receiving passing grades and improving school-related behaviors. Canoncito Navajo Reservation, the Isleta Pueblo, and urban Indian students in Albuquerque participated in the program. Personnel consisted of…

  11. Clinical Utility of Cancellation on the WISC-IV

    Science.gov (United States)

    Zhu, Jianjun; Chen, Hsinyi

    2013-01-01

    This study examined empirical evidence for clinical utility of the Wechsler Intelligence Scale for Children, fourth edition (WISC-IV) cancellation subtest by comparing data from 597 clinical and 597 matched control children. The results of dependent t and sequential logistic regression analyses demonstrated that (a) children with intellectual…

  12. WISC-IV GAI and CPI in Psychoeducational Assessment

    Science.gov (United States)

    Bremner, Dawn; McTaggart, Breanne; Saklofske, Donald H.; Janzen, Troy

    2011-01-01

    The General Ability Index (GAI) and Cognitive Proficiency Index (CPI) are two index scores that can be calculated for the Wechsler Intelligence Scale for Children-Fourth Canadian Edition (WISC-IV[superscript CDN]). The GAI comprises the verbal comprehension and perceptual reasoning subtests and reflects reasoning abilities. The CPI includes the…

  13. Grade IV fibrosis interferes in biliary drainage after Kasai procedure.

    Science.gov (United States)

    Salzedas-Netto, A A; Chinen, E; de Oliveira, D F; Pasquetti, A F; Azevedo, R A; da Silva Patricio, F F; Cury, E K; Gonzalez, A M; Vicentine, F P P; Martins, J L

    2014-01-01

    Biliary atresia (BA) is the most common cause of liver transplantation in children. The earlier the treatment is done, the better the prognosis. The aim is to evaluate the impact of late diagnosis in children with BA, including the histopathological findings and success rate of biliary drainage in patients submitted to hepatic portoenterostomy (HPE). A retrospective study of cases of BA in the Department of Pediatric Surgery, Federal University of São Paulo (UNIFESP) between 1998-2011. We found 63 cases of BA; of these, 42 underwent HPE and 21 were referred for liver transplantation. Clinic and pathologic data were evaluated. The HPE was performed with a mean age of 86.5 days, with 16.6% having the operation at 60 days or earlier; 59.2% between 61 and 90 days; and 23.8% after 90 days. Successful biliary drainage occurred in 31% of surgeries, Mean days when HPE drained was 69.1 days, and 94.3 days when the surgery did not drain (P = .05). All patients who were successfully drained, did not have grade IV fibrosis on histology. In cases in which surgery was performed after 60 days that had not drained, 25% had grade IV fibrosis on biopsy (P = .0469). The age of HPE relates to better prognosis of the disease. It was found that the rate of grade IV fibrosis is higher in no drainage patients. All patients with grade IV fibrosis had no biliary drainage. Copyright © 2014 Elsevier Inc. All rights reserved.

  14. Effect of Cerium(IV)-Surfactant Reaction in Foam Decontamination

    International Nuclear Information System (INIS)

    Yang, Han Beom; Jung, Chong-Hun; Yoon, In-Ho; Kim, Chorong; Choi, Wang-Kyu

    2015-01-01

    Using foams allows the decommissioning of complex shaped facilities. The decontamination foam comprises at least one surfactant to generate the foam and one or more chemical reactants to achieve the dissolution of the contaminants at the solid surface. In order to improve the efficiency of decontamination foam, the present study attempts to find the optimum condition of chemical reagents to the foaming solution. The corrosion rate of radioactive nuclides contaminated stainless steel metal is very important factor for the foam decontamination process. The goal of this study is to develop the decontamination process for contaminated stainless steel in medium of nitric acid. Stainless steel needs a strong oxidizing agent such as Ce(IV) ion and the effects of cerium(IV). Surfactant interaction involved in foam decontamination and finally the improvement brought by formulation science. The formulation of foams loaded with strong oxidizing reagents such as Ce(IV) is an important factor. The enhanced decontamination properties of nitric acid with Ce(IV) additive on stainless steel is well known in liquid mediums. stainless steel metal is an important aspect in the foam decontamination process

  15. IV srpsko-bugarska konferencija u Zrenjaninu 2005. godine

    Directory of Open Access Journals (Sweden)

    Dragana Antonijević

    2016-03-01

    Full Text Available U Zrenjaninu je  od 25. do 28. oktobra 2005. godine održana IV srpsko-bugarska konferencija na temu "Svakodnevna kultura u postsocijalističkom periodu u Srbiji i Bugarskoj: balkanska transformacija i evropska integracija". Konferenciju su organizovali Etnografski institut SANU iz Beograda, Etnografski institut i muzej BAN iz Sofije i Narodni muzej Zrenjanin.

  16. Verslavingsgedrag van DSM-IV naar DSM-5

    NARCIS (Netherlands)

    van den Brink, W.

    2014-01-01

    The 5th edition of the DSM was published in May, 2013. The new edition incorporates important changes in the classification of addiction. To compare the classification of addictive behaviours presented in DSM-IV with the classification presented in DSM-5 and to comment on the changes introduced into

  17. Enzymatic recovery of platinum (IV) from industrial wastewater using ...

    African Journals Online (AJOL)

    highest hydrogen-dependent platinum (IV) reducing activity in the presence of hydrogenase and its physiological electron carrier, cytochrome c3. When the purified hydrogenase enzyme (with and without cytochrome c3) was used with the industrial effluent, containing 7.9 mg.l-1 platinum, only 10 – 15% recovery was noted ...

  18. 78 FR 21491 - DeltaPoint Capital IV, L.P., DeltaPoint Capital IV (New York), L.P.; Notice Seeking Exemption...

    Science.gov (United States)

    2013-04-10

    ... SMALL BUSINESS ADMINISTRATION [License No. 02/02-0662, 02/02-0661] DeltaPoint Capital IV, L.P., DeltaPoint Capital IV (New York), L.P.; Notice Seeking Exemption Under Section 312 of the Small Business Investment Act, Conflicts of Interest Notice is hereby given that DeltaPoint Capital IV, L.P. and DeltaPoint...

  19. Adsorption of Th(IV) and Pu(IV) on the surface of Pseudomonas fluorescens and Bacillus subtilis in the presence of desferrioxamine siderophore

    International Nuclear Information System (INIS)

    Yoshida, Takahiro; Ozaki, Takuo; Ohnuki, Toshihiko; Francis, Arokiasamy J.

    2005-01-01

    Adsorption of Th(IV) and Pu(IV) on a Gram-negative bacterium Pseudomonas fluorescens and a Gram-positive bacterium Bacillus subtilis in the presence of siderophore desferrioxamine B (DFO) was studied. Thorium(IV) and Pu(IV) were dissociated from DFO during adsorption on the cells. Thorium(IV) adsorption on bacterial cells in the presence of DFO was larger than that of Pu(IV) because of the smaller stability of the Th(IV)-DFO complex than that of the Pu(IV)-DFO complex. On the other hand, adsorption of Pu(IV) was larger than that of Fe(III), wherein the stability of the Pu(IV)- and Fe(III)-DFO complex is comparable. P. fluorescens showed a higher affinity for Th(IV) and Pu(IV) than B. subtilis, though potentiometric titration of bacterial cells indicated that surfaces of P. fluorescens and B. subtilis cells showed similar proton binding properties. (author)

  20. Structural characterization of the Actinides (III) and (IV) - DOTA complexes

    International Nuclear Information System (INIS)

    Audras, Matthieu

    2014-01-01

    The polyamino-carboxylate anions have been identified as compounds of interest in the operations of actinide separation, in actinide migration in the environment and in human radio-toxicology. The structural characterization of complexes formed between actinides and polyamino-carboxylates ligands is essential for a better understanding of actinide-ligands interactions. Among the polyamino-carboxylate anions, the DOTA ligand (1,4,7,10-tetraaza-cyclododecane tetraacetic acid) is described as a very strong complexing agent of the lanthanides(III), but has been little studied with actinides. The objective of this thesis is to describe the complexes formed between the actinides (III) and (IV) and the DOTA ligand, and compare them with the lanthanide complexes. For this, an approach has been introduced to characterize the complexes by complementary analytical techniques (spectrophotometry, electro-spray ionization mass spectrometry, NMR, EXAFS, electrochemistry), but also by calculations of theoretical chemistry to help the interpretation of the experimental data. The formation of a 1:1 complex is observed with the actinides(III) (plutonium and americium) as for lanthanides(III): rapid formation of intermediate species which evolves slowly towards the formation of a limit complex. Within this complex, the cation is located inside the cavity formed by the ligand. Four nitrogen atoms and four oxygen atoms from the carboxylate functions are involved in the coordination sphere of the cation. However, differences were observed in the bond lengths formed between the cation and the nitrogen atoms (the bonds are somewhat shorter in the case of actinide complexes) as well as the complexation kinetics, which is slightly faster for the actinides(III) than for lanthanide(III) ions of equivalent radius. The same behavior was observed in solution upon complexation of actinides(IV) (uranium, plutonium and neptunium): slow formation of a 1:1 complex (actinide(IV):ligand) in wherein the

  1. Cytomorphologic features distinguishing Bethesda category IV thyroid lesions from parathyroid

    Directory of Open Access Journals (Sweden)

    Simon Sung

    2017-01-01

    Full Text Available Background: Thyroid follicular cells share similar cytomorphological features with parathyroid. Without a clinical suspicion, the distinction between a thyroid neoplasm and an intrathyroidal parathyroid can be challenging. The aim of this study was to assess the distinguishing cytomorphological features of parathyroid (including intrathyroidal and Bethesda category IV (Beth-IV thyroid follicular lesions, which carry a 15%–30% risk of malignancy and are often followed up with surgical resection. Methods: A search was performed to identify “parathyroid” diagnoses in parathyroid/thyroid-designated fine-needle aspirations (FNAs and Beth-IV thyroid FNAs (follicular and Hurthle cell, all with diagnostic confirmation through surgical pathology, immunocytochemical stains, Afirma® analysis, and/or clinical correlation. Unique cytomorphologic features were scored (0-3 or noted as present versus absent. Statistical analysis was performed using R 3.3.1 software. Results: We identified five FNA cases with clinical suspicion of parathyroid neoplasm, hyperthyroidism, or thyroid lesion that had an eventual final diagnosis of the parathyroid lesion (all female; age 20–69 years and 12 Beth-IV diagnoses (11 female, 1 male; age 13–64 years. The following cytomorphologic features are useful distinguishing features (P value: overall pattern (0.001, single cells (0.001, cell size compared to red blood cell (0.01, nuclear irregularity (0.001, presence of nucleoli (0.001, nuclear-to-cytoplasmic ratio (0.007, and nuclear chromatin quality (0.028. Conclusions: There are cytomorphologic features that distinguish Beth-IV thyroid lesions and (intrathyroidal parathyroid. These features can aid in rendering correct diagnoses and appropriate management.

  2. Policy-induced market introduction of Generation IV reactor systems

    International Nuclear Information System (INIS)

    Heek, Aliki Irina van; Roelofs, Ferry

    2011-01-01

    Almost 10 years ago the U.S. Department of Energy (DOE) started the Generation IV Initiative (GenIV) with 9 other national governments with a positive ground attitude towards nuclear energy. Some of these Generation IV systems, like the fast reactors, are nearing the demonstration stage. The question on how their market introduction will be implemented becomes increasingly urgent. One main topic for future reactor technologies is the treatment of radioactive waste products. Technological solutions to this issue are being developed. One possible process is the transformation of long-living radioactive nuclides into short living ones; a process known as transmutation, which can be done in a nuclear reactor only. Various Generation IV reactor concepts are suitable for this process, and of these systems most experience has been gained with the sodium-cooled fast reactor (SFR). However, both these first generation SFR plants and their Generation IV successors are designed as electricity generating plants, and therefore supposed to be commercially viable in the electricity markets. Various studies indicate that the generation costs of a combined LWR-(S)FR nuclear generating park (LWR: light water reactor) will be higher than that of an LWR-only park. To investigate the effects of the deployment of the different reactors and fuel cycles on the waste produced, resources used and costs incurred as a function of time, a dynamic fuel cycle assessment is performed. This study will focus on the waste impact of the introduction of a fraction of fast reactors in the European nuclear reactor park with a cost increase as described in the previous paragraph. The nuclear fuel cycle scenario code DANESS is used for this, as well as the nuclear park model of the EU-27 used for the previous study. (orig.)

  3. Hafnium(IV) complexation with oxalate at variable temperatures

    Energy Technology Data Exchange (ETDEWEB)

    Friend, Mitchell T.; Wall, Nathalie A. [Washington State Univ., Pullmanm, WA (United States). Dept. of Chemistry

    2017-08-01

    Appropriate management of fission products in the reprocessing of spent nuclear fuel (SNF) is crucial in developing advanced reprocessing schemes. The addition of aqueous phase complexing agents can prevent the co-extraction of these fission products. A solvent extraction technique was used to study the complexation of Hf(IV) - an analog to fission product Zr(IV) - with oxalate at 15, 25, and 35 C in 1 M HClO{sub 4} utilizing a {sup 175+181}Hf radiotracer. The mechanism of the solvent extraction system of 10{sup -5} M Hf(IV) in 1 M HClO{sub 4} to thenoyltrifluoroacetone (TTA) in toluene demonstrated a 4{sup th}-power dependence in both TTA and H{sup +}, with Hf(TTA){sub 4} the only extractable species. The equilibrium constant for the extraction of Hf(TTA){sub 4} was determined to be log K{sub ex}=7.67±0.07 (25±1 C, 1 M HClO{sub 4}). The addition of oxalate to the aqueous phase decreased the distribution ratio, indicating aqueous Hf(IV)-oxalate complex formation. Polynomial fits to the distribution data identified the formation of Hf(ox){sup 2+} and Hf(ox){sub 2(aq)} and their stability constants were measured at 15, 25, and 35 C in 1 M HClO{sub 4}. van't Hoff analysis was used to calculate Δ{sub r}G, Δ{sub r}H, and Δ{sub r}S for these species. Stability constants were observed to increase at higher temperature, an indication that Hf(IV)-oxalate complexation is endothermic and driven by entropy.

  4. The generation IV nuclear reactor systems - Energy of future

    International Nuclear Information System (INIS)

    Ohai, Dumitru; Jianu, Adrian

    2006-01-01

    Ten nations joined within the Generation IV International Forum (GIF), agreeing on a framework for international cooperation in research. Their goal is to develop future-generation nuclear energy systems that can be licensed, constructed, and operated in an economically competitive way while addressing the issues of safety, proliferation, and other public perception concerns. The objective is for the Gen IV systems to be available for deployment by 2030. Using more than 100 nuclear experts from its 10 member nations, the GIF has developed a Gen IV Technology Roadmap to guide the research and development of the world's most advanced, efficient and safe nuclear power systems. The Gen IV Technology Roadmap calls for extensive research and development of six different potential future reactor systems. These include water-cooled, gas-cooled, liquid metal-cooled and nonclassical systems. One or more of these reactor systems will provide the best combination of safety, reliability, efficiency and proliferation resistance at a competitive cost. The main goals for the Gen IV Nuclear Energy Systems are: - Provide sustainable energy generation that meets clean air objectives and promotes long-term availability of systems and effective fuel use for worldwide energy production; - Minimize and manage their nuclear waste and noticeably reduce the long-term stewardship burden in the future, improving the protection of public health and the environment; - Increase the assurance that these reactors are very unattractive and the least desirable route for diversion or theft of weapons-usable materials, and provide increased protection against acts of terrorism; - Have a clear life-cycle cost advantage over other energy sources; - Have a level of financial risk comparable to other energy projects; - Excel in safety and reliability; - Have a low likelihood and degree of reactor core damage. (authors)

  5. Psicodiagnostico : a busca de novas abordagens e a maneira como vem sendo desenvolvido pelos psicologos da região do Vale do Paraiba-SP

    OpenAIRE

    Ana Cristina Araujo do Nascimento

    1998-01-01

    Resumo: O trabalho investiga a prática psicodiagnóstica realizada pelos psicólogos do Vale do Paraíba, no Estado de São Paulo. Objetivamos caracterizar a fonna como esse recurso é desenvolvido na região, no que diz respeito ao modelo utilizado, aos objetivos para sua realização, ao referencial teórico que o fundamenta, aos locais de desenvolvimento e à preparação oferecida pelos cursos de graduação que atendem a região. Da mesma fonna, procuramos saber o nível de conhecimento e engajamento do...

  6. IMPROPRIEDADE DOS PRINCÍPIOS DA VERDADE MATERIAL E DA VERDADE FORMAL: UMA ANÁLISE FILOSÓFICA SOBRE A VERDADE ALCANÇÁVEL PELO DIREITO

    Directory of Open Access Journals (Sweden)

    Patrícia de Almeida Cardoso

    2010-08-01

    Full Text Available A doutrina relaciona à atividade probatória os princípios da verdade material e da verdade formal. Entretanto, o presente trabalho tem por escopo demonstrar a impropriedade desta divisão principiológica. Transportando-se para o Direito o conceito de verdade para a Filosofia, em destaque à Escola do Pragmatismo e do Neopragmatismo, bem como, apresentando-se o conjunto de limitações intrínsecas à natureza humana e criadas pelo ordenamento jurídico, busca-se evidenciar a intangibilidade da verdade pelo sistema jusprocessual e individualizar o que, de fato, é retratado pelas sentenças penal e civil.

  7. A escolha da unidade de atuação pelo docente da Escola Pública Estadual do Ensino Médio: Fatores relevantes

    Directory of Open Access Journals (Sweden)

    Carlos Vital Giordano

    2015-11-01

    Full Text Available Este artigo pesquisou sobre quais são os fatores que levam o professor a escolher a escola de atuação, e relacionar se esses fatores possuem alguma associação com a formação ou, se a escolha apresenta outros aspectos, além dos pedagógicos. Por meio de entrevistas com os docentes, utilizando-se questionários, a pesquisa mostra o cenário de uma escola da Diretoria Regional de Ensino Sul I, que no ano de 2014 alcançou as metas de Ensino Médio estabelecidas pelo IDESP. Os resultados apresentados no artigo indicam quais os fatores considerados pelos docentes a atuar na escola, em seus variados graus de importância.

  8. Efeito do tratamento clínico de um corredor de longa distância com broncoespasmo induzido pelo exercício: relato de caso

    OpenAIRE

    Teixeira,Renata Nakata; Gonçalves,Raquel Calvo; Costa,Luiz Augusto Riani; Silva,Leonardo Borges de Barros e; Martins,Milton de Arruda; Teixeira,Luzimar Raimundo; Carvalho,Celso Ricardo Fernandes

    2009-01-01

    O broncoespasmo induzido pelo exercício (BIE) é uma condição que se caracteriza pelo estreitamento transitório das vias aéreas durante ou após o esforço físico e afeta principalmente portadores de asma. Em atletas profissionais que praticam esportes de alta intensidade, a prevalência também é alta; no entanto, seu diagnóstico permanece subestimado. O presente estudo descreve o caso de um atleta do sexo masculino, 23 anos, corredor de longa distância sem histórico de asma, que após um teste gr...

  9. Evidência da ação antiparasitária da azitromicina na infecção experimental de camundongos pelo Plasmodium berghei

    Directory of Open Access Journals (Sweden)

    Gakiya Erika

    2001-01-01

    Full Text Available A azitromicina debelou a infecção experimental de camundongos pelo Plasmodium berghei quando administrada, pela via oral e durante 28 dias, na dose de 100mg/kg, iniciada no mesmo dia em que os animais foram infectados. Mediante uso de 10mg/kg houve insucesso. Os resultados obtidos suscitam investigações complementares sobre a referida atividade antiparasitária desse medicamento.

  10. Valores de referência para macronutrientes em eucalipto obtidos pelos métodos DRIS e chance matemática

    Directory of Open Access Journals (Sweden)

    P. G. S. Wadt

    1998-12-01

    Full Text Available Informações de 1.213 árvores de plantios comerciais foram obtidas, entre os anos de 1988 a 1994, de híbridos de Eucalyptus grandis x E. urophylla, da Aracruz Celulose S.A., cultivados no estado do Espírito Santo, Brasil. Os resultados da produtividade e concentração dos macronutrientes em quatro órgãos das árvores foram utilizados na obtenção dos valores de referência para a concentração dos nutrientes, pelos métodos da Chance Matemática e do DRIS. Empregou-se, no cálculo dos índices DRIS, a fórmula de Jones (1981, a divisão da população-base em estratos de idade e a seleção das relações entre os nutrientes pelo teste F. O nível crítico dos nutrientes foi atingido pelo DRIS por meio de dois critérios: pela concentração média dos nutrientes nos talhões nutricionalmente balanceados e produtivos (NCO e pelo critério gráfico (NCG. O primeiro critério mostrou-se mais promissor, inclusive em relação ao método da Chance Matemática, o qual foi adequado principalmente para a determinação de faixa ótima que poderia ser adotada como referência para o limite inferior e o superior de árvores com níveis adequados dos nutrientes.

  11. Endogeneity in Panel Data Models with Time-Varying and Time-Fixed Regressors: To IV or not IV?

    DEFF Research Database (Denmark)

    Mitze, Timo

    We analyse the problem of parameter inconsistency in panel data econometrics due to the correlation of exogenous variables with the error term.A common solution in this setting is to use Instrumental-Variable (IV) estimation in the spirit of Hausman-Taylor (1981). However, some potential shortcom...

  12. Functionalization of group IV semiconductors; Funktionalisierung von Gruppe IV-Halbleitern

    Energy Technology Data Exchange (ETDEWEB)

    Hoeb, Marco Andreas

    2011-01-15

    The present work is focused on the structural and electronic properties of thermally and photochemically grafted alkene molecules. The semiconductor substrates used in this work are the group IV-semiconductors silicon, diamond, and silicon carbide. On silicon, functionalization via the commonly known hydrosilylation reaction was performed. During thermal treatment in vacuum-distilled 1-octadecene, the alkene molecules covalently added to the substrate via Si-C bond formation, resulting in self-assembled organic monolayers. The reaction resulted in smooth and homogeneous alkyl-terminated surfaces. Static water contact angles were determined to be 113 . Photoelectron spectroscopy was performed and showed no evidence of surface oxidation. The high packing of the organic layers is indicated by the asymmetric methylene vibrational mode, which has been redshifted by -4 cm{sup -1} with respect to the liquid alkene mode position. The average molecular tilt-angle of the alkyl-molecules, relative to the surface normal, has been identified to be 34 . The transport properties have been determined to be dominated by tunneling processes. On diamond, first results on the thermal functionalization of hydrogen- and oxygen-terminated surfaces are demonstrated. Thermal functionalization with octadecene showed high selectivity, while hydrogenated diamond surfaces were found to be inert to the thermally induced reaction with alkenes. In contrast, alkene molecules were successfully grafted to oxygen-terminated sites via covalent C-O-C bonds. Reaction temperatures as high as 160 C were necessary to initiate the functionalization process.Wetting experiments on the alkyl-modified surfaces revealed contact angle values of 103 . The high quality of the monolayers on oxygenated surfaces was confirmed by IR-spectroscopy. In addition, polarized IR-measurements indicated a tilt angle of 23 . On silicon carbide, thermal and UV-induced alkoxylation were studied. Hydrofluoric acid treatment

  13. Synthesis and spectroscopic studies of mono- and dicyclopentadienyl titanium (IV)/zirconium (IV) derivatives with S-alkyl-β-N-(acetylferrocenyl) methylene dithiocarbazates

    International Nuclear Information System (INIS)

    Srivastava, B.K.; Srivastava, S.K.; Pandey, O.P.; Sengupta, S.K.

    1996-01-01

    The reactions of dicyclopentadienyl titanium (IV)/zirconium (IV) dichloride and monocyclopentadienyl titanium (IV) trichloride with thio-Schiff bases (LH), derived by the condensation of S-methyl/ethyl/propyl dithiocarbazic acid and acetylferrocene have been carried out under inert atmosphere and anhydrous conditions in different stoichiometric ratios. Complexes of the types Cp 2 M(L)Cl, CpM(L) 2 Cl (M= Ti(IV) or Zr(IV)), CpTi(L)Cl 2 , CpTi(L) 2 Cl are synthesised and characterized by elemental analysis, electrical conductance, magnetic moment and spectral (electronic, infrared, 1 H NMR) data. (author). 12 refs., 1 tab

  14. Acesso aos medicamentos para tratamento da doença de Alzheimer fornecidos pelo Sistema Único de Saúde em Minas Gerais, Brasil

    Directory of Open Access Journals (Sweden)

    Celline Cardoso Almeida-Brasil

    Full Text Available Resumo: Avaliou-se as barreiras de acesso ao tratamento da doença de Alzheimer com base nos processos administrativos de medicamentos inibidores da colinesterase (IChE, enviados à Secretaria de Estado de Saúde de Minas Gerais, Brasil, entre 2012 e 2013. Utilizando-se informações de 165 processos selecionados aleatoriamente, abordaram-se as dimensões de acesso: acessibilidade geográfica, acomodação, aceitabilidade, disponibilidade e capacidade aquisitiva. O trâmite administrativo para o fornecimento dos IChE levou em média 39 dias e foi influenciado por características do trajeto percorrido pelo usuário. A maioria dos prescritores cumpriu menos de 80% dos critérios exigidos pelo Protocolo Clínico e Diretrizes Terapêuticas (PCDT da doença de Alzheimer. Como resultado, 38% dos processos não foram deferidos. A capacidade aquisitiva para o tratamento privado mensal com IChE foi de cerca de 21 dias de salário mínimo. Conclui-se que a burocracia do trâmite administrativo e a dificuldade de seguimento do PCDT pelos prescritores prejudicam o acesso ao tratamento da doença de Alzheimer e constituem uma grande carga para o orçamento dos pacientes.

  15. Avaliação da correção da energia pelo balanço de nitrogênio em alimentos para frangos de corte

    Directory of Open Access Journals (Sweden)

    R.C. Andrade

    2016-04-01

    Full Text Available Com o objetivo de determinar valores de energia metabolizável aparente e de energia metabolizável aparente corrigida pelo balanço de nitrogênio de alimentos para frangos de corte, bem como avaliar os efeitos da correção da energia sobre seu desempenho, foram conduzidos dois experimentos: I determinação da energia do milho, do farelo de soja, da farinha de carne e ossos, da farinha de vísceras e da farinha de penas, pelo método de coleta total de excretas, utilizando-se 450 pintos de corte com um dia de idade, distribuídos em delineamento inteiramente ao acaso, sendo seis tratamentos e cinco repetições; II desempenho de 960 frangos de corte, distribuídos ao acaso, em cinco tratamentos e seis repetições. As aves que receberam os tratamentos A (matriz energética de acordo com Rostagno et al. (2011 e E (energia sem correção com ajuste pela idade apresentaram melhor desempenho, e as aves do tratamento E tiveram melhor conversão alimentar. Portanto, formulações com energia sem correção pelo balanço de nitrogênio e ajustadas pela idade são viáveis tanto sob o ponto de vista zootécnico, quanto econômico.

  16. Abordagem pedagógica e diversificação dos cenários de ensino médico: projetos selecionados pelo PROMED

    Directory of Open Access Journals (Sweden)

    Lucia Maria Horta Figueiredo Goulart

    Full Text Available Este trabalho analisa as principais propostas de abordagem pedagógica e diversificação de cenários do processo de ensino apresentadas pelas escolas selecionadas pelo Programa de Incentivo a Mudanças Curriculares nas Escolas de Medicina (Promed, instituído em 2002 pelos ministérios da Saúde e da Educação. Foi realizada pesquisa documental, utilizando-se roteiro com base no termo de referência do programa para a leitura dos projetos. Verificou-se que todas as escolas selecionadas já se encontravam em processo de mudança curricular por ocasião do edital Promed. Embora buscassem alcançar os objetivos apresentados pelo programa, os projetos selecionados apontaram diferentes caminhos para sua realização. Conhecer essas propostas e a maneira como se articularam entre si e com o objetivo final do Promed é de capital importância para os educadores da área de saúde envolvidos com mudanças curriculares em suas instituições, bem como para os gestores dessa área que vêm apresentando suas demandas em consonância com as necessidades de saúde da população

  17. Mulheres em situação de violência pelo parceiro íntimo: tomada de decisão por apoio institucional especializado

    Directory of Open Access Journals (Sweden)

    Leônidas de Albuquerque Netto

    Full Text Available RESUMO Objetivo Propõe-se analisar fatores envolvidos na tomada de decisão de mulheres em situação de violência interpessoal, praticada pelo parceiro íntimo, na busca por apoio institucional de referência. Métodos Pesquisa qualitativa, descritiva e exploratória. Dezesseis mulheres foram entrevistadas, entre junho e setembro de 2012, em um Centro de Referência à Mulher de Duque de Caxias, Rio de Janeiro, Brasil, por meio de instrumento semiestruturado e individual. Os relatos foram analisados pelo método do Discurso do Sujeito Coletivo. Resultados As mulheres buscaram suporte psicossocial quando a violência interpessoal alcançou o limite da tolerância. Este suporte possibilitou o resgate da autoestima e da confiança, além da tomada de consciência para a necessidade de mudança de vida e de autonomia econômica. Conclusões As mulheres alcançaram sua autoconfiança com a superação da violência, o que possibilitou o resgate da autoestima e a tomada de decisão para a saída da situação de violência interpessoal praticada pelo parceiro íntimo.

  18. ALTERAÇÕES CITOLÓGICAS ASSOCIADAS A INFECÇÃO PELO PAPILOMAVIRUS HUMANO EM MULHERES ATENDIDAS EM UM HOSPITAL

    Directory of Open Access Journals (Sweden)

    Emilly de Oliveira Silva

    2016-01-01

    Full Text Available O Papilomavírus Humano (HPV é atualmente a principal causa de virose sexualmente transmissível, sendo sua principal consequência o câncer de colo de útero. Neste contexto, este estudo teve como objetivo avaliar as alterações citológicas em mulheres atendidas em um hospital. Tratou-se de uma pesquisa do tipo quantitativa, de caráter documental, composta por 198 mulheres que apresentaram lesão devido à infecção pelo HPV e atendidas no Hospital Alpheu de Quadros. Os dados foram coletados por meio de registros arquivados no computador do hospital. Das mulheres infectadas pelo HPV, 66,7% tinham entre 20 e 39 anos e das que relataram sua iniciação sexual 61,6% tinham entre 16 e 20 anos. A maioria dessas mulheres foi diagnosticada com lesão intraepitelial de alto grau (HSIL seja na citologia ou na biópsia. O resultado pós Cirurgia de Alta Frequência apresentou-se positivo, pois houve diminuição de HSIL das mulheres. Ações de saúde pública podem prevenir a incidência e mortalidade pelo câncer de colo de útero quase que totalmente, desde que o planejamento destas ações esteja em concordância com o conhecimento científico atual.

  19. A Comprehensive Functional Analysis of NTRK1 Missense Mutations Causing Hereditary Sensory and Autonomic Neuropathy Type IV (HSAN IV).

    Science.gov (United States)

    Shaikh, Samiha S; Chen, Ya-Chun; Halsall, Sally-Anne; Nahorski, Michael S; Omoto, Kiyoyuki; Young, Gareth T; Phelan, Anne; Woods, Christopher Geoffrey

    2017-01-01

    Hereditary sensory and autonomic neuropathy type IV (HSAN IV) is an autosomal recessive disorder characterized by a complete lack of pain perception and anhidrosis. Here, we studied a cohort of seven patients with HSAN IV and describe a comprehensive functional analysis of seven novel NTRK1 missense mutations, c.1550G >A, c.1565G >A, c.1970T >C, c.2096T >C, c.2254T >A, c.2288G >C, and c.2311C >T, corresponding to p.G517E, p.G522E, p.L657P, p.I699T, p.C752S, p.C763S, and p.R771C, all of which were predicted pathogenic by in silico analysis. The results allowed us to assess the pathogenicity of each mutation and to gain novel insights into tropomyosin receptor kinase A (TRKA) downstream signaling. Each mutation was systematically analyzed for TRKA glycosylation states, intracellular and cell membrane expression patterns, nerve growth factor stimulated TRKA autophosphorylation, TRKA-Y496 phosphorylation, PLCγ activity, and neurite outgrowth. We showed a diverse range of functional effects: one mutation appeared fully functional, another had partial activity in all assays, one mutation affected only the PLCγ pathway and four mutations were proved null in all assays. Thus, we conclude that complete abolition of TRKA kinase activity is not the only pathogenic mechanism underlying HSAN IV. By corollary, the assessment of the clinical pathogenicity of HSAN IV mutations is more complex than initially predicted and requires a multifaceted approach. © 2016 WILEY PERIODICALS, INC.

  20. Resposta cardiorrespiratória na asma induzida pelo exercício máximo com incrementos progressivos

    Directory of Open Access Journals (Sweden)

    LAMAR FILHO RUY AMAZONAS

    2001-01-01

    Full Text Available Objetivo: Verificar a ocorrência de broncoconstrição induzida por exercício e verificar a resposta cardiorrespiratória durante o exercício máximo em pacientes asmáticos. Pacientes e métodos: Quatorze asmáticos (VEF1 basal de 86,3%, conforme os critérios da American Thoracic Society, foram submetidos a teste de exercício máximo. Foram realizadas curvas fluxo-volume antes, sete e 15 minutos após esforço progressivo máximo. Seis indivíduos (43% apresentaram queda do VEF1 igual ou maior que 15% após esforço máximo (grupo I. Os demais constituíram o grupo II. No grupo I, observou-se redução no VEF1 de 40,9% e 26,7% sete e 15min após o exercício, enquanto no grupo II ocorreu diminuição de 2,6% e aumento de 1,2%. No pico do exercício, os dois grupos atingiram FCmax acima de 91% do valor de referência; a carga máxima foi de 82,7% e 62,5%, o O2max (mL/kg/min de 93,5% e 58,9% e a VEmax de 91,5% e 63,8%, respectivamente, nos grupos I e II. Essas diferenças foram estatisticamente significativas. A correlação da queda percentual do VEF1 (7min pós-exercício com a VEmax (%predito mostrou um coeficiente r = 0,8989 para o grupo I e um r = 0,3629 para o grupo II. Não se observou correlação estatisticamente significativa entre o delta VEF1 e o O2max (% predito. Conclusão: Nos pacientes com asma induzida pelo exercício, a ocorrência de broncoconstrição correlacionou-se com o nível de ventilação máxima, mas não com a aptidão física (O2 máximo.

  1. A inserção insumo-produto da economia brasileira no Mercosul: uma abordagem pelo valor adicionado

    Directory of Open Access Journals (Sweden)

    Marco Antonio Montoya

    2001-04-01

    Full Text Available Neste artigo, com base na matriz insumo-produto internacional do Mercosul de 1990, avalia-se, através do valor adicionado, a inserção da economia brasileira no Mercosul. Verificou-se, em termos relativos, que o valor adicionado induzido no Brasil pelas respectivas demandas da Argentina, Chile e Uruguai é o mais alto na região. Isso, associado aos níveis de industrialização alcançados pelo Brasil e às necessidades estruturais por importados que apresentam as indústrias dos países parceiros, mostra a importância relativa da economia brasileira como um supridor de produtos acabados de materiais básicos industriais e de bens de capital para o Mercosul. Contudo, ficou evidente que, para as economias da Argentina, Chile e Uruguai, o maior parceiro da região na geração de valor adicionado é o Brasil. Portanto, conclui-se que os mercados na região são potencialmente complementares e que, em decorrência disso, o processo de integração econômica regional poderá, efetivamente, vir a representar para o Brasil e seus países parceiros uma opção permanente de ampliação do espaço de produção e de circulação de mercadorias.This paper, based on the matrix of the Mercosur international input-output of 1990, evaluates, through added value, the insertion of the Brazilian economy in Mercosur. In relative terms, the added value induced in Brazil by the respective demands of Argentina, Chile and Uruguay are the highest in the region. This, associated with the industrialization levels of the Brazilian economy and with the structural needs for imported products which the industries of the partner countries have, shows the relative importance of the Brazilian economy as a supplier of finished products, basic industrial materials, and capital goods for Mercosur. However, for the economies of Argentina, Chile and Uruguay, the biggest partner in the region in the generation of added value is Brazil. Therefore, the paper concludes that the

  2. Alterações fetais induzidas pelo uso de antiinflamatórios durante a gestação

    Directory of Open Access Journals (Sweden)

    Fonseca Cláudia Sampaio

    2002-01-01

    Full Text Available Em geral, todos os efeitos dos antiinflamatórios estão relacionados com a inibição da ciclo-oxigenase (COX do ácido araquidônico e, portanto, inibição da produção de prostaglandinas e tromboxanos. Existem dois tipos de COX, quais sejam COX-1 e COX-2. A COX-1 é uma enzima constitucional expressa em muitos tecidos, incluindo plaquetas sangüíneas, e está envolvida na homeostase tecidual. Por outro lado, a COX-2 é induzida em células inflamatórias quando elas são ativadas, sendo considerada a enzima que produz os mediadores da inflamação da classe dos prostanóides. A ação dos antiinflamatórios está relacionada à inibição da COX-2 e é provável que seus efeitos indesejados se devam principalmente à inibição da COX-1. Tratamentos maternos com antiinflamatórios não esteroidais (AINEs têm sido associados, com freqüência, à vasoconstrição do ducto arterioso fetal, hipertensão arterial pulmonar e inibição da agregação plaquetária. Alterações na hemostasia são alguns dos efeitos colaterais produzidos pelo uso incontrolado dos AINEs, os quais induzem a um desequilíbrio na liberação de prostaglandinas e tromboxanos, que se reflete na adesividade e agregação plaquetária. As alterações hemostáticas observadas em neonatos, decorrentes do uso de salicilatos pela mãe, ocorrem devido à inibição da agregação plaquetária e à diminuição da atividade do fator XII relacionado à coagulação sangüínea. Estudos em camundongos revelaram que o uso de corticóides durante a gestação pode levar a anormalidades no desenvolvimento fetal, por alterações na diferenciação celular.

  3. Influência dos Hipnóticos no bloqueio neuromuscular produzido pelo cisatracúrio: emprego da aceleromiografia

    Directory of Open Access Journals (Sweden)

    Angélica de Fátima de Assunção Braga

    2013-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Os efeitos farmacodinâmicos dos bloqueadores neuromusculares (BNM podem ser influenciados por diferentes drogas, entre elas os hipnóticos. O objetivo deste estudo foi avaliar a influência do propofol e do etomidato sobre o bloqueio neuromuscular produzido pelo cisatracúrio. MÉTODO: Foram incluídos 60 pacientes, ASA I e II, submetidos a cirurgias eletivas sob anestesia geral, distribuídos aleatoriamente em dois grupos de acordo com o hipnótico empregado: GI (propofol e GII (etomidato. As pacientes receberam midazolam (0,1 mg.kg-1 por via muscular como medicação pré-anestésica, a indução foi com propofol (2,5 mg.kg-1 ou etomidato (0,3 mg.kg-1 precedido de fentanil (250 µg e seguido de cisatracúrio (0,1 mg.kg-1. Os pacientes foram ventilados com oxigênio a 100% até a obtenção de redução de 95% ou mais na amplitude da resposta do adutor do polegar, quando foi feita a laringoscopia e a intubação traqueal. A função neuromuscular foi monitorizada com aceleromiografia. Avaliaram-se o início de ação do cisatracúrio, as condições de intubação traqueal e as repercussões hemodinâmicas. RESULTADOS: Os tempos médios e os desvios padrão para o início de ação do cisatracúrio foram: GI (86,6 ± 14,3" e GII (116,9 ± 11,6", com diferença significativa (p < 0,0001. As condições de intubação traqueal foram aceitáveis em 100% dos pacientes do GI e em 53,3% no GII (p < 0,0001. CONCLUSÕES: A instalação do bloqueio neuromuscular com o cisatracúrio foi mais rápida e as condições de intubação traqueal foram melhores nos pacientes que receberam propofol em relação ao grupo que recebeu etomidato, sem repercussões hemodinâmicas.

  4. Mumps meningoencephalitis: an epidemiological approach Meningoencefalite pelo vírus da caxumba: abordagem epidemiológica

    Directory of Open Access Journals (Sweden)

    Alfredo Leboreiro-Fernandez

    1997-01-01

    Full Text Available The aim of this study was to analyse distribution of meningoencefalitis caused by mumps viras in children related to sex, age and seasonal influences. Thirty seven children were evaluated, ages ranging from 2 to 14 years. They were seen at Emergency Unit of Faculdade de Medicina do Triângulo Mineiro and at Hospital da Criança, in Uberaba-MG, Brazil, from March 1st 1991 to February 1st 1993 and they were hospitalized for about 5 days. Through a protocol findings were studied during hospitalization and clinical course stressing epidemiology, symptomatology, cerebrospinal fluid studies, electroencephalogram and cortical function analysis. Only epidemiological data were considered in the present study. Data analysis revealed male predominance, at a range from 5 to 9 years and great number of occurrences at the last quarter of the year.O presente trabalho tem por objetivo, estudar a distribuição quanto ao sexo, idade e sazonalidade, em crianças com meningencefalite pelo vírus da caxumba. Foram avaliadas 37 crianças, com idades variando de 2 a 14 anos, atendidas no Pronto-Socorro do Hospital Escola da FMTM e do Hospital da Criança, MG, no período de 1-março-1991 a 1-fevereiro-1993 e hospitalizadas por período médio de 5 dias. Através de protocolo pré-elaborado foram estudados os achados obtidos por ocasião da internação e evolução, enfatizando-se a epidemiologia, sintomatologia, líquido cefalorraqueano, eletrencefalograma e função cortical. São considerados apenas os dados epidemiológicos, no presente estudo. A análise das informações pertinentes revela predomínio no sexo masculino, na faixa etária dos 5 aos 9 anos e maior número de casos no último trimestre do ano, correspondente à estação da primavera.

  5. Conteúdos hipermodais para fins de aprendizagem: usos em contexto pelos alunos Hypermodal content to learning: student's contextualized use

    Directory of Open Access Journals (Sweden)

    Eduardo S Junqueira

    2010-12-01

    Full Text Available A análise dos usos de artefatos e conteúdos hipermodais pelos alunos, para fins de aprendizagem na modalidade do ensino a distância, indicou dois elementos-chave. A estrutura e a coesão dos conteúdos, identificados a partir de categorias estáveis de análi se semiótica de materiais hipermodais, não determinaram o uso. Norteados por elemen tos culturais e por suas intenções, os alunos formularam práticas comunicativas que extrapolaram a dicotomia impresso/digital. Imprimiram os conteúdos disponibilizados na tela do computador e instituíram a centralidade do impresso para a aprendizagem, sem, no entanto, ignorar os conteúdos hipermodais. A partir do impresso, utilizaram tais conteúdos em "rede" e construíram trilhas de navegação e leitura coerentes, voltadas a fins de aprendizagem específicos. Indica-se a necessidade de processos flexíveis e com a participação dos usuários-alunos para a produção de conteúdos mais interativos e democráticos.The analysis of the use of hypermodal artifacts and content by distance learning students indicated two key elements. Content structure and cohesion, estab lished by stable semiotic categories of hypermodal artifact's analysis, indicated that they have not determined the student's use. Guided by cultural elements and their own goals, students established communicative practices that extrapolated the print/digital dichoto my. The students printed the online content and established the centrality of the print ing material for their learning without disregarding hypermodal content. From the print ing material, they used content as "webs" and developed paths as they coherently navi gated and read the materials. The study indicates the need to establish flexible, open to participation processes of content design aimed at the student's participation to produce more interactive and democratic content for the production of learning.

  6. PREVENTION OF SPINAL DISORDERS IN CHILDRENI- IV GRADE

    Directory of Open Access Journals (Sweden)

    Dejаn Gojković

    2012-09-01

    Full Text Available Problem physical activities children younger school-age children, with the basic tasks research is construction kinesitherapy adequate prevention and avoid postural disorders spinal column, optimal ontogenetic level morphological( anthropological development.The main objective research is contents teaching physical education as well as and content that can be put in regular program teaching physical education with the basic task prevention potential and eliminate disorders spinal column, with auxiliary a harmonious biological development. The entities from which he was carried out sample size for this research is defined as population students male primary schools I- IV grade.The first and basic condition was that they are included in teaching physical education in the course of this research sample is taked 400 respondents.-according to the manner elections respondents sample was targeted selected.were taken I- IV grade elementary schools in Bijeljina, Teslic, Foca and Pale.

  7. Target Selection for the SDSS-IV APOGEE-2 Survey

    Energy Technology Data Exchange (ETDEWEB)

    Zasowski, G. [Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 (United States); Cohen, R. E.; Carlberg, J. K.; Fleming, Scott W. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Chojnowski, S. D.; Holtzman, J. [Department of Astronomy, New Mexico State University, Las Cruces, NM 88001 (United States); Santana, F. [Departamento de Astronomía, Universidad de Chile, Santiago (Chile); Oelkers, R. J.; Bird, J. C. [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Andrews, B. [PITT PACC, Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States); Beaton, R. L. [The Observatories of the Carnegie Institution for Science, Pasadena, CA 91101 (United States); Bender, C.; Cunha, K. [Steward Observatory, The University of Arizona, Tucson, AZ 85719 (United States); Bovy, J. [Department of Astronomy and Astrophysics and Dunlap Institute for Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4 (Canada); Covey, K. [Department of Physics and Astronomy, Western Washington University, Bellingham, WA 98225 (United States); Dell’Agli, F.; García-Hernández, D. A. [Departamento de Astrofísica, Universidad de La Laguna, and Instituto de Astrofísica de Canarias, La Laguna, Tenerife (Spain); Frinchaboy, P. M. [Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129 (United States); Harding, P. [Department of Astronomy, Case Western Reserve University, Cleveland, OH 44106 (United States); Johnson, J. A., E-mail: gail.zasowski@gmail.com [Department of Astronomy, The Ohio State University, Columbus, OH 43210 (United States); and others

    2017-11-01

    APOGEE-2 is a high-resolution, near-infrared spectroscopic survey observing ∼3 × 10{sup 5} stars across the entire sky. It is the successor to APOGEE and is part of the Sloan Digital Sky Survey IV (SDSS-IV). APOGEE-2 is expanding on APOGEE’s goals of addressing critical questions of stellar astrophysics, stellar populations, and Galactic chemodynamical evolution using (1) an enhanced set of target types and (2) a second spectrograph at Las Campanas Observatory in Chile. APOGEE-2 is targeting red giant branch and red clump stars, RR Lyrae, low-mass dwarf stars, young stellar objects, and numerous other Milky Way and Local Group sources across the entire sky from both hemispheres. In this paper, we describe the APOGEE-2 observational design, target selection catalogs and algorithms, and the targeting-related documentation included in the SDSS data releases.

  8. Fluid dynamics applications of the Illiac IV computer

    Science.gov (United States)

    Maccormack, R. W.; Stevens, K. G., Jr.

    1976-01-01

    The Illiac IV is a parallel-structure computer with computing power an order of magnitude greater than that of conventional computers. It can be used for experimental tasks in fluid dynamics which can be simulated more economically, for simulating flows that cannot be studied by experiment, and for combining computer and experimental simulations. The architecture of Illiac IV is described, and the use of its parallel operation is demonstrated on the example of its solution of the one-dimensional wave equation. For fluid dynamics problems, a special FORTRAN-like vector programming language was devised, called CFD language. Two applications are described in detail: (1) the determination of the flowfield around the space shuttle, and (2) the computation of transonic turbulent separated flow past a thick biconvex airfoil.

  9. Target Selection for the SDSS-IV APOGEE-2 Survey

    International Nuclear Information System (INIS)

    Zasowski, G.; Cohen, R. E.; Carlberg, J. K.; Fleming, Scott W.; Chojnowski, S. D.; Holtzman, J.; Santana, F.; Oelkers, R. J.; Bird, J. C.; Andrews, B.; Beaton, R. L.; Bender, C.; Cunha, K.; Bovy, J.; Covey, K.; Dell’Agli, F.; García-Hernández, D. A.; Frinchaboy, P. M.; Harding, P.; Johnson, J. A.

    2017-01-01

    APOGEE-2 is a high-resolution, near-infrared spectroscopic survey observing ∼3 × 10 5 stars across the entire sky. It is the successor to APOGEE and is part of the Sloan Digital Sky Survey IV (SDSS-IV). APOGEE-2 is expanding on APOGEE’s goals of addressing critical questions of stellar astrophysics, stellar populations, and Galactic chemodynamical evolution using (1) an enhanced set of target types and (2) a second spectrograph at Las Campanas Observatory in Chile. APOGEE-2 is targeting red giant branch and red clump stars, RR Lyrae, low-mass dwarf stars, young stellar objects, and numerous other Milky Way and Local Group sources across the entire sky from both hemispheres. In this paper, we describe the APOGEE-2 observational design, target selection catalogs and algorithms, and the targeting-related documentation included in the SDSS data releases.

  10. Review on Korea Participation of Generation IV International Forum (GIF)

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Jewhan; Jeong, Ji-Young; Hahn, Dohee [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2015-05-15

    Generation IV International Forum (GIF) originates from US proposal of an initiative in 2000. The vision was to leapfrog LWR technology and collaborate with international partners to share R and D on advanced nuclear systems. Nine countries and EU joined the initiative and Gen IV concept was defined via technology goals and legal framework. Two years study with more than 100 experts worldwide has evaluated nearly 100 reactor designs and down selected six most promising concepts. In 2005, the first signatures on Framework Agreement were collected and the first research projects were defined in 2006. Korea is one of the founding members of GIF and actively participating in various areas. In 2013, TD was assigned to Korean expert and Korea is endeavoring to enhance the benefit of participation since this turning point. In this paper, pros and cons of engaging with GIF were briefly introduced and items to maximize the benefit were suggested.

  11. Validation of the Portuguese DSM-IV-MR-J.

    Science.gov (United States)

    Calado, Filipa; Alexandre, Joana; Griffiths, Mark D

    2016-01-01

    Youth problem gambling is viewed as an emergent public health issue in many countries, and is also an emerging area of public concern in Portugal. However, there is currently no Portuguese instrument that focuses specifically on the measurement of problem gambling among young people. Consequently, the present study aimed to validate the DSM-IV-MR-J for use among Portuguese adolescents and to examine its' psychometric properties. A cross-cultural adaption of this instrument to the Portuguese language was performed using the translation and back translation method. The final version of the instrument was administered to 753 Portuguese high school and first year college students. The findings revealed an acceptable internal reliability and replicated the one-factor structure of this scale. Based on these findings, the Portuguese DSM-IV-MR-J appears to be a valid and reliable instrument, and provides a much needed psychometric tool for the development of more research on youth gambling in Portugal.

  12. Review on Korea Participation of Generation IV International Forum (GIF)

    International Nuclear Information System (INIS)

    Lee, Jewhan; Jeong, Ji-Young; Hahn, Dohee

    2015-01-01

    Generation IV International Forum (GIF) originates from US proposal of an initiative in 2000. The vision was to leapfrog LWR technology and collaborate with international partners to share R and D on advanced nuclear systems. Nine countries and EU joined the initiative and Gen IV concept was defined via technology goals and legal framework. Two years study with more than 100 experts worldwide has evaluated nearly 100 reactor designs and down selected six most promising concepts. In 2005, the first signatures on Framework Agreement were collected and the first research projects were defined in 2006. Korea is one of the founding members of GIF and actively participating in various areas. In 2013, TD was assigned to Korean expert and Korea is endeavoring to enhance the benefit of participation since this turning point. In this paper, pros and cons of engaging with GIF were briefly introduced and items to maximize the benefit were suggested

  13. Determination of Cerium (IV) Using Rhodamine 6G Fluorescence Quenching

    Science.gov (United States)

    Zhao, Zh.; Sheng, L.; Su, B.; Tao, C.; Jing, W.

    2017-11-01

    The interaction between rhodamine 6G (Rh6G) and cerium sulfate was studied by the fluorescence quenching method. In a sulfuric acid medium, the interaction of Ce(IV) with Rh6G results in Rh6G fluorescence quenching. The maximum excitation wavelength (λex) and the maximum emission wavelength (λem) are 530 nm and 555 nm, respectively. A good linearity between the relative fl uorescence intensity (ΔF) and Ce(IV) was observed in the range 0.12-1.08 μg/mL. The detection limit was 1.4 × 10-3 μg/mL. The optimum reaction conditions, influencing factors, and effect of coexisting substances were investigated in the experiment. We found that the concentration of Rh6G was 3.2 × 10-6 mol/L, and the fl uorescence intensity was maximum.

  14. The rate of adverse events during IV conscious sedation.

    Science.gov (United States)

    Schwamburger, Nathan T; Hancock, Raymond H; Chong, Chol H; Hartup, Grant R; Vandewalle, Kraig S

    2012-01-01

    Conscious sedation has become an integral part of dentistry; it is often used to reduce anxiety or fear in some patients during oral surgery, periodontal surgery, implant placement, and general dentistry procedures. The purpose of this study was to evaluate the frequency of adverse events during IV conscious sedation provided by credentialed general dentists and periodontists in the United States Air Force (USAF). Sedation clinical records (Air Force Form 1417) from calendar year 2009 were requested from all USAF bases. A total of 1,468 records were reviewed and 19 adverse events were noted in 17 patients. IV complication (infiltration) was the most common adverse event. The overall adverse event rate was 1.3 per 100 patients treated. The results of this study show that moderate sedation provided by general dentists and periodontists in the USAF has a low incidence of adverse events, and conscious sedation remains a viable option for providers for the reduction of anxiety in select patients.

  15. Adult presentation of Bartter syndrome type IV with erythrocytosis.

    Science.gov (United States)

    Heilberg, Ita Pfeferman; Tótoli, Cláudia; Calado, Joaquim Tomaz

    2015-01-01

    Bartter syndrome comprises a group of rare autosomal-recessive salt-losing disorders with distinct phenotypes, but one unifying pathophysiology consisting of severe reductions of sodium reabsorption caused by mutations in five genes expressed in the thick ascending limb of Henle, coupled with increased urinary excretion of potassium and hydrogen, which leads to hypokalemic alkalosis. Bartter syndrome type IV, caused by loss-of-function mutations in barttin, a subunit of chloride channel CLC-Kb expressed in the kidney and inner ear, usually occurs in the antenatal-neonatal period. We report an unusual case of late onset presentation of Bartter syndrome IV and mild phenotype in a 20 years-old man who had hypokalemia, deafness, secondary hyperparathyroidism and erythrocytosis.

  16. Silica from triethylammonium tris (oxalato) silicate (IV) thermal decomposition

    International Nuclear Information System (INIS)

    Ferracin, L.C.; Ionashiro, M.; Davolos, M.R.

    1990-01-01

    Silica can be obtained from differents precursors by differents methods. In this paper it has been investigated the thermal decomposition of triethylammonium tris (oxalato) silicate (IV) to render silica. Among the trisoxalato-complexes of silicon preparation methods reviewed it has been used the Bessler's one with the reflux adaptaded in microwave oven. Thermal decomposition analysis of the compound has been made by TG-DTG and DTA curves. Silica powders obtained and heated between 300 to 900 0 C in a oven were characterized by infrared vibrational spectroscopy, X-ray powder difraction and nitrogen adsorption isotherm (BET). The triethylammonium tris (oxalato) silicate (IV) thermal decomposition takes place at 300 0 C and the silica powder obtained is non cristalline with impurities that are eliminated with heating at 400 0 C. (author) [pt

  17. DSM-5 Personality Traits and DSM-IV Personality Disorders

    Science.gov (United States)

    Hopwood, Christopher J.; Thomas, Katherine M.; Markon, Kristian E.; Wright, Aidan G.C.; Krueger, Robert F.

    2014-01-01

    Two issues pertinent to the DSM-5 proposal for personality pathology, the recovery of DSM-IV personality disorders (PDs) by proposed DSM-5 traits and the validity of the proposed DSM-5 hybrid model which incorporates both personality pathology symptoms and maladaptive traits, were evaluated in a large undergraduate sample (N = 808). Proposed DSM-5 traits as assessed with the Personality Inventory for DSM-5 explained a substantial proportion of variance in DSM-IV PDs as assessed with the Personality Diagnostic Questionnaire-4+, and trait indicators of the six proposed DSM-5 PDs were mostly specific to those disorders with some exceptions. Regression analyses support the DSM-5 hybrid model in that pathological traits and an indicator of general personality pathology severity provided incremental information about PDs. Findings are discussed in the context of broader issues around the proposed DSM-5 model of personality disorders. PMID:22250660

  18. JRC-IE's research of safety of Gen IV systems

    International Nuclear Information System (INIS)

    Tsige-Tamirat, H.; Ranguelova, V.; Feutterer, M.; Ammirabile, L.; Carlsson, J.; D'Agata, E.; Laurie, M.; Magallon, D.

    2010-01-01

    The Institute for Energy (IE), one of the seven scientific Institutes of the Joint Research Centre (JRC) of the European Commission, has the mission to provide scientific and technical support for the conception, development, implementation and monitoring of community policies related to energy. To accomplish its mission, IE performs research in the areas of renewable energies, safety and sustainability of nuclear energy for current and future reactor systems, energy technic/economic assessment, and security of energy supply. The Generation IV International Forum (GIF) is a cooperative international endeavour organized to carry out R and D needed to establish the feasibility and performance capabilities of the next generation nuclear energy systems and support the progress towards their realization. The EU, represented by EURATOM and with the JRC as implementing agent, is working together with other GIF partners to perform pre-competitive R and D on key technologies to be implemented in future nuclear systems. IE is engaged in experimental research, simulation and modeling, scientific, feasibility and engineering studies on innovative nuclear reactor systems needed to support the EURATOM contribution to GEN IV initiative, in particular in assessment of innovative fuels and materials, development of new reactor core concepts and safety solutions and knowledge management and preservation. IE's research activities on Generation IV reactor systems are focused on the assessment of the potential of such systems to meet long term EU energy needs with respect to economical advantages, enhanced safety, sustainability, and proliferation resistance. IE participates in international collaborations and has bilateral research cooperation both with European and non-European partners. This paper gives an overview of IE's current research activities on the Gen IV reactor systems related to safety. (authors)

  19. Development of Basic Key Technologies for Gen IV SFR

    International Nuclear Information System (INIS)

    Han, Do Hee; Kim, Young In; Won, Byung Chool

    2008-11-01

    Technical specifications such as power capacity, type of core, clad alloy, clad barrier material, number of loops, type of SG tube have been evaluated and a optimal design concept has been identified to satisfy the technology goals of Generation IV nuclear systems. The concept for breakeven design is featured by the heat capacity of 1,200 MWe, enrichment-separated core, 2-loop, double-walled SG tube, and a long-life sensor system for in-service inspection

  20. Fytochemický výzkum Evolvulus alsinoides IV.

    OpenAIRE

    Svačinová, Jana

    2006-01-01

    Svačinová Jana: Rigorous thesis (2006) PHYTOCHEMICAL STUDY OF EVOLVULUS ALSINOIDES IV. This thesis deals with phytochemical research of plant Evolvulus alsinoides from family Convolvulaceae. Petrolether extract of leaves was separated by column and preparative TLC chromatography. Mixture of esters of 3-methoxy-4-hydroxycinnamic acid with long linear alcohols has been isolated and confirmed by 1 H NMR and MS spectrum. Its antiradical and platelet antiaggregatory activity was established.

  1. Mutation in GNE Downregulates Peroxiredoxin IV Altering ER Redox Homeostasis.

    Science.gov (United States)

    Chanana, Pratibha; Padhy, Gayatri; Bhargava, Kalpana; Arya, Ranjana

    2017-12-01

    GNE myopathy is a rare neuromuscular genetic disorder characterized by early adult onset and muscle weakness due to mutation in sialic acid biosynthetic enzyme, UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (GNE). More than 180 different GNE mutations are known all over the world with unclear pathomechanism. Although hyposialylation of glycoproteins is speculated to be the major cause, but cellular mechanism leading to loss of muscle mass has not yet been deciphered. Besides sialic acid biosynthesis, GNE affects other cellular functions such as cell adhesion and apoptosis. In order to understand the effect of mutant GNE protein on cellular functions, differential proteome profile of HEK293 cells overexpressing pathologically relevant recombinant mutant GNE protein (D207V and V603L) was analyzed. These cells, along with vector control and wild-type GNE-overexpressing cells, were subjected to two-dimensional gel electrophoresis coupled with mass spectrometry (MALDI-TOF/TOF MS/MS). In the study, 10 differentially expressed proteins were identified. Progenesis same spots software revealed downregulation of peroxiredoxin IV (PrdxIV), an ER-resident H 2 O 2 sensor that regulates neurogenesis. Significant reduction in mRNA and protein levels of PrdxIV was observed in GNE mutant cell lines compared with vector control. However, neither total reactive oxygen species was altered nor H 2 O 2 accumulation was observed in GNE mutant cell lines. Interestingly, ER redox state was significantly affected due to reduced normal GNE enzyme activity. Our study indicates that downregulation of PrdxIV affects ER redox state that may contribute to misfolding and aggregation of proteins in GNE myopathy.

  2. Norway; Staff Report for the 2002 Article IV Consultation

    OpenAIRE

    International Monetary Fund

    2003-01-01

    This 2002 Article IV Consultation for Norway highlights that the mainland GDP growth edged up to an estimated 1.4 percent in 2002, from 12 percent in 2001, driven by strong consumption growth. Mainland investment and traditional exports slackened, as a result of weak external demand, high real interest rates, and an appreciation of the nominal effective exchange rate by 11.5 percent during 2002. Unemployment remained fairly stable through 2002 as the expansion of the sheltered sector offset e...

  3. Norway; Staff Report for the 2001 Article IV Consultation

    OpenAIRE

    International Monetary Fund

    2002-01-01

    This 2001 Article IV Consultation highlights that the real mainland (non-oil) GDP of Norway is estimated to have grown well below potential in 2001, at 1¼ percent. Although high oil prices supported household confidence and domestic activity through most of the year, the global slowdown has recently begun to affect Norway. Labor market conditions remain tight in service sectors, but weakened in technology and traditional export industries. Despite high domestic cost increases, consumer price ...

  4. Synthesis, Characterization and Antimicrobial Activity of Zirconium (IV) Complexes

    Energy Technology Data Exchange (ETDEWEB)

    Sharma, Shobhana; Jain, Asha; Saxena, Sanjiv [Univ. of Rajasthan, Jaipur (India)

    2012-08-15

    Heteroleptic complexes of zirconium (IV) derived from bulky Schiff base ligands containing a sulphur atom and oximes of heterocyclic β-diketones of the general formula ZrLL' (where L'H{sub 2}=RCNH(C{sub 6}H{sub 4})SC : C(OH)N(C{sub 6}H{sub 5})N : CCH{sub 3}, R=-C{sub 6}H{sub 5}, -C{sub 6}H{sub 4}Cl(p) and L'H{sub 2}=R'C : (NOH)C : C(OH)N(C{sub 6}H{sub 5})N : CCH{sub 3}, R' = -CH{sub 2}CH{sub 3}, -C{sub 6}H{sub 5}, -C{sub 6}H{sub 4}Cl (p) were prepared by the reactions of zirconium tetrachloride with disodium salts of Schiff bases (L Na{sub 2}) and oximes of heterocyclic β-diketones (L' Na{sub 2}) in 1:1:1 molar ratio in dry refluxing THF. The structures of these monomeric zirconium (IV) complexes were elucidated with the help of elemental analysis, molecular weight measurements, spectroscopic (IR, NMR and mass) studies. A distorted trigonal bipyramidal geometry may be suggested for these heteroleptic zirconium (IV) complexes. The ligands (bulky Schiff base ligands containing a sulphur atom and oximes of heterocyclic β-diketones) and their heteroleptic complexes of zirconium (IV) were screened against A. flavus, P. aeruginesa and E. coli.

  5. OGLE-IV Transient Search summary of season 2015b

    Science.gov (United States)

    Wyrzykowski, L.; Kostrzewa-Rutkowska, Z.; Klencki, J.; Sitek, M.; Mroz, P.; Udalski, A.; Kozlowski, S.; Skowron, J.; Poleski, R.; Szymanski, M. K.; Pietrzynski, G.; Soszynski, I.; Ulaczyk, K.; Pietrukowicz, P.

    2015-12-01

    The OGLE-IV Transient Detection System (Wyrzykowski et al. 2014, AcA,64,197; Kozlowski et al. 2013) in the 2015b transient observing season (from August) has been operating in dual mode: regular as in previous years (detections every couple of days based on at least two positive detections), and rapid (automatised detections within 15 mins after the single frame was taken, details in Klencki et al. in prep.).

  6. TUF simulation of Darlington class IV power failure

    Energy Technology Data Exchange (ETDEWEB)

    Liauw, W K; Liu, W S; Leung, R K; Phillips, B S [Ontario Hydro, Toronto, ON (Canada)

    1996-12-31

    Presented here is the TUF simulation of the initial transient of the Class IV power failure event that occurred on November 25, 1993 at Darlington Unit 4. The important physical parameters and models that relate to this event are discussed. The agreements between the code predictions and the plant data on the thermal-hydraulics and controller responses demonstrate the code reliability for plant operational support. (author). 4 refs., 1 tab., 12 figs.

  7. Epigenetic and antitumor effects of platinum (IV)-octanoato conjugates

    Czech Academy of Sciences Publication Activity Database

    Novohradský, Vojtěch; Zanellato, I.; Marzano, C.; Prachařová, J.; Kašpárková, Jana; Gibson, D.; Gandin, V.; Osella, D.; Brabec, Viktor

    2017-01-01

    Roč. 7, JUN2017 (2017), č. článku 3751. ISSN 2045-2322 R&D Projects: GA ČR(CZ) GA17-09436S; GA ČR(CZ) GA17-05302S Institutional support: RVO:68081707 Keywords : cancer-cell apoptosis * pt(iv) prodrugs * dna hypermethylation Subject RIV: FD - Oncology ; Hematology OBOR OECD: Oncology Impact factor: 4.259, year: 2016

  8. Luxembourg; Staff Report for the 2015 Article IV Consultation

    OpenAIRE

    International Monetary Fund

    2015-01-01

    This 2015 Article IV Consultation highlights that Luxembourg’s economic model, emphasizing fiscal stability, openness, firm prudential oversight, and responsiveness to investor needs, is delivering strong growth. Buoyant financial services exports contributed to real growth of close to 3 percent in 2014, with strong job creation. Budget 2015 launched a multi-year fiscal consolidation aimed at offsetting falling revenues from electronic commerce. The economy faces important challenges going fo...

  9. Implementasi Corporate Social Responsibility Pada PT. Perkebunan Nusantara IV (PERSERO)

    OpenAIRE

    Matondang, Anggey Wira

    2015-01-01

    Corporate Social Responsibility is a management concept where by companies integrate social and environmental concerns in their business operations and interactions with their stakeholders. This study aims to determine how the implementation of CSR in PTPN IV and what are the effect of CSR implementation to the community’s economic empowerment and their constraints. This study is a qualitative study using descriptive methods, and data are collected through interviewing the informan...

  10. Core level shifts in group IV semiconductors and semimetals

    International Nuclear Information System (INIS)

    Yin, S.; Tosatti, E.

    1981-08-01

    We calculate the core level binding energy shift from the isolated atom to the crystalline solid, for group IV elemental semiconductors. This is done by simple extension of Johansson and Martensson's scheme for metals. We show that the core level energy in a nonmetal must be measured by the photo absorption (''core exciton'') threshold rather than by photo emission. As a byproduct, a simple scheme is also devised to evaluate impurity heats of solutions in semiconductors. (author)

  11. Nonoperative management for patients with grade IV blunt hepatic trauma

    Directory of Open Access Journals (Sweden)

    Zago Thiago

    2012-08-01

    Full Text Available Abstract Introduction The treatment of complex liver injuries remains a challenge. Nonoperative treatment for such injuries is increasingly being adopted as the initial management strategy. We reviewed our experience, at a University teaching hospital, in the nonoperative management of grade IV liver injuries with the intent to evaluate failure rates; need for angioembolization and blood transfusions; and in-hospital mortality and complications. Methods This is a retrospective analysis conducted at a single large trauma centre in Brazil. All consecutive, hemodynamically stable, blunt trauma patients with grade IV hepatic injury, between 1996 and 2011, were analyzed. Demographics and baseline characteristics were recorded. Failure of nonoperative management was defined by the need for surgical intervention. Need for angioembolization and transfusions, in-hospital death, and complications were also assessed Results Eighteen patients with grade IV hepatic injury treated nonoperatively during the study period were included. The nonoperative treatment failed in only one patient (5.5% who had refractory abdominal pain. However, no missed injuries and/or worsening of bleeding were observed during the operation. None of the patients died nor need angioembolization. No complications directly related to the liver were observed. Unrelated complications to the liver occurred in three patients (16.7%; one patient developed a tracheal stenosis (secondary to tracheal intubation; one had pleural effusion; and one developed an abscess in the pleural cavity. The hospital length of stay was on average 11.56 days. Conclusions In our experience, nonoperative management of grade IV liver injury for stable blunt trauma patients is associated with high success rates without significant complications.

  12. Nonoperative management for patients with grade IV blunt hepatic trauma.

    Science.gov (United States)

    Zago, Thiago Messias; Tavares Pereira, Bruno Monteiro; Araujo Calderan, Thiago Rodrigues; Godinho, Mauricio; Nascimento, Bartolomeu; Fraga, Gustavo Pereira

    2012-08-22

    The treatment of complex liver injuries remains a challenge. Nonoperative treatment for such injuries is increasingly being adopted as the initial management strategy. We reviewed our experience, at a University teaching hospital, in the nonoperative management of grade IV liver injuries with the intent to evaluate failure rates; need for angioembolization and blood transfusions; and in-hospital mortality and complications. This is a retrospective analysis conducted at a single large trauma centre in Brazil. All consecutive, hemodynamically stable, blunt trauma patients with grade IV hepatic injury, between 1996 and 2011, were analyzed. Demographics and baseline characteristics were recorded. Failure of nonoperative management was defined by the need for surgical intervention. Need for angioembolization and transfusions, in-hospital death, and complications were also assessed Eighteen patients with grade IV hepatic injury treated nonoperatively during the study period were included. The nonoperative treatment failed in only one patient (5.5%) who had refractory abdominal pain. However, no missed injuries and/or worsening of bleeding were observed during the operation. None of the patients died nor need angioembolization. No complications directly related to the liver were observed. Unrelated complications to the liver occurred in three patients (16.7%); one patient developed a tracheal stenosis (secondary to tracheal intubation); one had pleural effusion; and one developed an abscess in the pleural cavity. The hospital length of stay was on average 11.56 days. In our experience, nonoperative management of grade IV liver injury for stable blunt trauma patients is associated with high success rates without significant complications.

  13. Treatment of Stage IV Non-small Cell Lung Cancer

    Science.gov (United States)

    Evans, Tracey; Gettinger, Scott; Hensing, Thomas A.; VanDam Sequist, Lecia; Ireland, Belinda; Stinchcombe, Thomas E.

    2013-01-01

    Background: Stage IV non-small cell lung cancer (NSCLC) is a treatable, but not curable, clinical entity in patients given the diagnosis at a time when their performance status (PS) remains good. Methods: A systematic literature review was performed to update the previous edition of the American College of Chest Physicians Lung Cancer Guidelines. Results: The use of pemetrexed should be restricted to patients with nonsquamous histology. Similarly, bevacizumab in combination with chemotherapy (and as continuation maintenance) should be restricted to patients with nonsquamous histology and an Eastern Cooperative Oncology Group (ECOG) PS of 0 to 1; however, the data now suggest it is safe to use in those patients with treated and controlled brain metastases. Data at this time are insufficient regarding the safety of bevacizumab in patients receiving therapeutic anticoagulation who have an ECOG PS of 2. The role of cetuximab added to chemotherapy remains uncertain and its routine use cannot be recommended. Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors as first-line therapy are the recommended treatment of those patients identified as having an EGFR mutation. The use of maintenance therapy with either pemetrexed or erlotinib should be considered after four cycles of first-line therapy in those patients without evidence of disease progression. The use of second- and third-line therapy in stage IV NSCLC is recommended in those patients retaining a good PS; however, the benefit of therapy beyond the third-line setting has not been demonstrated. In the elderly and in patients with a poor PS, the use of two-drug, platinum-based regimens is preferred. Palliative care should be initiated early in the course of therapy for stage IV NSCLC. Conclusions: Significant advances continue to be made, and the treatment of stage IV NSCLC has become nuanced and specific for particular histologic subtypes and clinical patient characteristics and according to the

  14. TUF simulation of Darlington class IV power failure

    International Nuclear Information System (INIS)

    Liauw, W.K.; Liu, W.S.; Leung, R.K.; Phillips, B.S.

    1995-01-01

    Presented here is the TUF simulation of the initial transient of the Class IV power failure event that occurred on November 25, 1993 at Darlington Unit 4. The important physical parameters and models that relate to this event are discussed. The agreements between the code predictions and the plant data on the thermal-hydraulics and controller responses demonstrate the code reliability for plant operational support. (author). 4 refs., 1 tab., 12 figs

  15. Belgium; Staff Report for the 2001 Article IV Consultation

    OpenAIRE

    International Monetary Fund

    2002-01-01

    This 2001 Article IV Consultation highlights that following four years of robust expansion, real GDP growth in Belgium slowed markedly in 2001, as higher oil prices, declining equity values, and the deteriorating external environment adversely affected business investment, household consumption, and exports. The outlook for 2002 depends critically on a recovery in the world economy and, especially, in Belgium’s key European trading partners. Growth for the year is projected by the IMF staff a...

  16. Electrochemical behaviour of uranium (IV) in DMF at vitreous carbon

    International Nuclear Information System (INIS)

    Afonso, M.L.; Gomes, A.; Carvalho, A.; Alves, L.C.; Wastin, F.; Goncalves, A.P.

    2009-01-01

    The electrochemical behaviour of UCl 4 (0.01 mol L -1 up to 0.05 mol L -1 ) in 0.1 mol L -1 TBAPF 6 /DMF solution at vitreous carbon was studied, at room temperature, by cyclic voltammetry and potentiostatic techniques. The electrolytic solutions were analyzed by UV spectroscopy (UV), and the electrodeposited films were characterized by Rutherford Backscattering Spectroscopy (RBS) and X-ray diffraction (XRD). The cyclic voltammetric results, at low UCl 4 concentrations (0.01 mol L -1 ), point that the reduction of U(IV) to U(0) occurs in two steps involving mainly U(IV) and U(III) species. The first electron transfer reaction is quasi-reversible and the second irreversible. The diffusion coefficient of U(IV) in DMF and the charge rate constant were determined to be 4.78 x 10 -7 cm 2 s -1 and 1.93 x 10 -3 cm s -1 (at 0.02 V s -1 ), respectively. RBS data obtained from samples prepared at constant potential (-3.10 V) during 3 h at room temperature, indicated the presence of uranium particles deposited all over the vitreous carbon surface with aggregates in some places, confirming that the second reduction step corresponds to uranium electrodeposition. No crystallographic ordering could be seen by XRD, pointing to an amorphous character of the uranium films.

  17. Neutron lifetime and generation time by KENO IV

    International Nuclear Information System (INIS)

    Hayashi, Masatoshi

    1991-01-01

    It is believed that Monte Carlo method is suitable to the calculation of neutron lifetime and generation time with reference to the life cycle viewpoint. This paper illustrates that those times obtained by Monte Carlo method are quite different from the results by perturbation method. The neutron lifetime and the generation time for bare and reflected reactors were investigated by the Monte Carlo program, KENO IV. the Monte Carlo procedure is based on tracking and recording the life history of neutrons in a realistic fashion in a fissionable system with minimum nuclear and geometric approximations. The KENO IV provides the multiplication factor, neutron lifetime and generation time simultaneously. The thermal spherical reactors for both bare and reflected reactors were studied using the KENO IV. The reflected reactor is surrounded with 30 cm thick light water. The atomic densities in the regions and the calculated results of the multiplication factor, neutron lifetime and generation time are given. The different definitions of these times between the Monte Carlo method and perturbation theory caused the difference of the results. (K.I.)

  18. Interventional therapy of hilar cholangiocarcinoma in type III and IV

    International Nuclear Information System (INIS)

    Fan Weijun; Wu Peihong; Zhang Liang; Huang Jinhua; Zhang Fujun; Gu Yangkui; Zhao Ming; Huang Xianglong; Guo Changyu

    2005-01-01

    Objective: To explore the role of synthetic interventional therapy for hilar cholangiocarcinoma in type III and IV. Methods: Twenty-one patients with obstructive cholestasis were pathological confirmed as cholangioadenocarcinoma, and they were classified as type III and IV cholangioadenocarcinoma by CT, MRCP, and percutaneous transhepatic cholangiography. Percutaneous transhepatic cholangiography with internal and external drainage (PTCD), multipolar radiofrequency (RF) ablation, biliary stent endoprosthesis, and interventional adjuvant chemotherapy were applied sequentially. Results: All masses presented with density diminution in CT one month after RF ablation, in which 13 masses had about 30% reduction in size, 4 masses had about 20% reduction in size, and 4 masses remained unchanged. All the masses presented with size reduction with an average of 37% in follow-up CT after 6 months, and the most remarkable size reduction was 60%. The direct and indirect bilirubin levels prompt returned to normal range in 17 cases one month after synthetic interventional therapy and returned to normal range in all cases 6 months later. All patients survived with the follow-up period ranging from 9 to 24 months, with the mean survival time of 14 months. Conclusion: Synthetic interventional therapy is a micro-invasive and effective treatment for type III and IV cholangiocarcinoma. (authors)

  19. Dibutylammonium bis(hydrogen methylphosphonato-κOtriphenylstannate(IV

    Directory of Open Access Journals (Sweden)

    Tidiane Diop

    2012-10-01

    Full Text Available The asymmetric unit of the title organotin salt, (C8H20N[Sn(C6H53(CH4O3P2], contains two dibutylammonium cations and two stannate(IV anions consisting each of two monodentately bonding methyl hydrogenphosphate groups attached to an Sn(C6H5 unit. The overall coordination environment of the two SnIV atoms is trigonal–bipyramidal defined by three phenyl C atoms in equatorial positions and two methyl hydrogenphosphate O atoms at the apical sites. In the crystal, the stannate(IV anions are linked to each other via pairs of short O—H...O hydrogen bonds, leading to an infinite chain extending parallel to the b-axis direction. Neighbouring chains are linked by N—H...O hydrogen bonds involving the butylammonium cations, giving a two-dimensional structure parallel to the ab plane. The crystal under investigation was found to be twinned by reticular merohedry with twin fractions of 0.5342 (7:0.4658 (7.

  20. Endorsement of DSM-IV dependence criteria among caffeine users.

    Science.gov (United States)

    Hughes, J R; Oliveto, A H; Liguori, A; Carpenter, J; Howard, T

    1998-10-01

    The purpose of this article is to determine whether some caffeine users endorse clinical indicators of dependence and abuse. We asked 162 randomly-selected caffeine users generic DSM-IV criteria for dependence, abuse, intoxication and withdrawal pertaining to their caffeine use in the last year via a structured telephone interview. The prevalence of endorsement of dependence items was 56% for strong desire or unsuccessful attempt to stop use, 50% for spending a great deal of time with the drug, 28% for using more than intended, 18% for withdrawal, 14% for using despite knowledge of harm, 8% for tolerance and 1% for foregoing activities to use. Seven percent of users met DSM-IV criteria for caffeine intoxication and, among those who had tried to stop caffeine permanently, 24% met DSM-IV research criteria for caffeine withdrawal. Test-retest interviews for dependency agreed in 29/30 cases (97%). Eight expert substance abuse clinicians agreed with self-endorsed caffeine dependence 91% of the time. Our results replicate earlier work and suggest that a substantial proportion of caffeine users exhibit dependence-like behaviors. Further studies are needed to determine whether such users exhibit a clinically significant syndrome of drug dependence.

  1. Engineering design of the Aries-IV gaseous divertor

    International Nuclear Information System (INIS)

    Hasan, M.Z.; Najmabadi, F.; Sharafat, S.

    1994-01-01

    ARIES-IV is a conceptual, D-T burning, steady-state tokamak fusion reactor producing 1000 MWe net. It operates in the second plasma stability regime. The structural material is SiC composite and the primary coolant is helium at 10MPa base pressure. ARIES-IV uses double-null divertors for particle control. Total thermal power recovered from the divertors is 425MW, which is 16% of the total reactor thermal power. Among the desirable goals of divertor design were to avoid the use of tungsten and to use the same structural material and primary coolant as in the blanket design. In order to reduce peak heat flux, the innovative gaseous divertor has been used in ARIES-IV. A gaseous divertor reduces peak heat flux by increasing the surface area and by distributing particle and radiation energy more uniformly. Another benefit of gaseous divertor is the reduction of plasma temperature in the divertor chamber, so that material erosion due to sputtering, can be diminished. This makes the use of low-Z material possible in a gaseous divertor

  2. GEN IV reactors: Where we are, where we should go

    International Nuclear Information System (INIS)

    Locatelli, G.; Mancini, M.; Todeschini, N.

    2012-01-01

    GEN IV power plants represent the mid-long term option of the nuclear sector. International literature proposes many papers and reports dealing with these reactors, but there is an evident difference of type and shape of information making impossible each kind of detailed comparison. Moreover, authors are often strongly involved in some particular design; this creates many difficulties in their super-partes position. Therefore it is necessary to put order in the most relevant information to understand strengths and weaknesses of each design and derive an overview useful for technicians and policy makers. This paper presents the state-of the art for GEN IV nuclear reactors providing a comprehensive literature review of the different designs with a relate taxonomy. It presents the more relevant references, data, advantages, disadvantages and barriers to the adoptions. In order to promote an efficient and wide adoption of GEN IV reactors the paper provides the pre-conditions that must be accomplished, enabling factors promoting the implementation and barriers limiting the extent and intensity of its implementation. It concludes outlying the state of the art of the most important R and D areas and the future achievements that must be accomplished for a wide adoption of these technologies. (authors)

  3. Possible superconductivity in the Bismuth IV solid phase under pressure.

    Science.gov (United States)

    Valladares, Ariel A; Rodríguez, Isaías; Hinojosa-Romero, David; Valladares, Alexander; Valladares, Renela M

    2018-04-13

    The first successful theory of superconductivity was the one proposed by Bardeen, Cooper and Schrieffer in 1957. This breakthrough fostered a remarkable growth of the field that propitiated progress and questionings, generating alternative theories to explain specific phenomena. For example, it has been argued that Bismuth, being a semimetal with a low number of carriers, does not comply with the basic hypotheses underlying BCS and therefore a different approach should be considered. Nevertheless, in 2016 based on BCS we put forth a prediction that Bi at ambient pressure becomes a superconductor at 1.3 mK. A year later an experimental group corroborated that in fact Bi is a superconductor with a transition temperature of 0.53 mK, a result that eluded previous work. So, since Bi is superconductive in almost all the different structures and phases, the question is why Bi-IV has been elusive and has not been found yet to superconduct? Here we present a study of the electronic and vibrational properties of Bi-IV and infer its possible superconductivity using a BCS approach. We predict that if the Bi-IV phase structure were cooled down to liquid helium temperatures it would also superconduct at a T c of 4.25 K.

  4. KENO IV: an improved Monte Carlo criticality program

    International Nuclear Information System (INIS)

    Petrie, L.M.; Cross, N.F.

    1975-11-01

    KENO IV is a multigroup Monte Carlo criticality program written for the IBM 360 computers. It executes rapidly and is flexibly dimensioned so the allowed size of a problem (i.e., the number of energy groups, number of geometry cards, etc., are arbitrary) is limited only by the total data storage required. The input data, with the exception of cross sections, fission spectra and albedos, may be entered in free form. The geometry input is quite simple to prepare and complicated three-dimensional systems can often be described with a minimum of effort. The results calculated by KENO IV include k-effective, lifetime and generation time, energy-dependent leakages and absorptions, energy- and region-dependent fluxes and region-dependent fission densities. Criticality searches can be made on unit dimensions or on the number of units in an array. A summary of the theory utilized by KENO IV, a section describing the logical program flow, a compilation of the error messages printed by the code and a comprehensive data guide for preparing input to the code are presented. 14 references

  5. Speciation of platinum(IV) in nitric acid solutions.

    Science.gov (United States)

    Vasilchenko, Danila; Tkachev, Sergey; Baidina, Iraida; Korenev, Sergey

    2013-09-16

    The speciation of platinum(IV) ions in nitric acid (6-15.8 M) solutions of H2[Pt(OH)6] has been studied by (195)Pt NMR and Raman spectroscopy. Series of aqua-hydroxo-nitrato complexes [Pt(L)(x)(NO3)(6-x)] (L = H2O or OH(-); x = 0, ..., 6) were found to exist in such solutions. The pair additivity model of chemical shifts and statistical theory were used to assign signals in NMR spectra to particular [Pt(L)(x)(NO3)(6-x)] species. Mononuclear hexanitratoplatinates(IV) have been isolated in solid state in substantial yield as pyridinium salt (PyH)2[Pt(NO3)6] and characterized by single-crystal X-ray diffraction. Aging of the platinum nitric acid solutions for more than 5-6 h results in oligomerization of [Pt(L)(x)(NO3)(6-x)] species and the formation of oligonuclear aqua-hydroxo-nitrato complexes with OH(-) and NO3(-) bridging ligands. Oligomeric platinum(IV) complexes with two and four nuclei were unambiguously detected by NMR on (195)Pt -enriched samples. Oligomers with even higher nuclearity were also detected. Dimeric anions [Pt2(μ-OH)2(NO3)8](2-) have been isolated as single crystals of tetramethylammonium salt and characterized by X-ray diffraction.

  6. Riscos percebidos pelo consumidor e estratégias para minimizá-los no consumo de saladas de horataliças cruas em restaurantes à la carte

    OpenAIRE

    Mariana Schievano Danelon

    2012-01-01

    Resumo: O padrão alimentar da população brasileira tem sido caracterizado, entre outros aspectos, pelo reduzido consumo de hortaliças e pelo crescimento do número de refeições realizadas fora do domicílio. A utilização dos serviços de alimentação pode representar oportunidade para a inclusão de variedade de hortaliças na dieta. Tem sido pouco estudado, no Brasil, o comportamento do consumidor quando se alimenta fora de casa. Este pode ser influenciado pelos riscos percebidos em uma situação d...

  7. Selections from 2017: Mapping the Universe with SDSS-IV

    Science.gov (United States)

    Kohler, Susanna

    2017-12-01

    Editors note:In these last two weeks of 2017, well be looking at a few selections that we havent yet discussed on AAS Nova from among the most-downloaded paperspublished in AAS journals this year. The usual posting schedule will resume in January.Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant UniversePublished June2017Main takeaway:The incredibly prolific Sloan Digital Sky Survey has provided photometric observations of around 500 million objects and spectra for more than 3 million objects. The survey has now entered its fourth iteration, SDSS-IV, with the first public data release made in June 2016. A publication led by Michael Blanton (New York University) describes the facilities used for SDSS-IV, its science goals, and itsthree coreprograms.Why its interesting:Since data collection began in 2000, SDSS has been one of the premier surveysproviding imaging and spectroscopy for objects in both the near and distant universe.SDSS has measured spectra not only for the stars in our own Milky Way, but also for galaxies that lie more than 7 billion light-years distant making itan extremelyuseful and powerful tool for mapping our universe.What SDSS-IV is looking for:SDSS image of an example MaNGA target galaxy (left), with some of the many things we can learn about it shown in the right and bottom panels: stellar velocity dispersion, stellar mean velocity, stellar population age, metallicity, etc. [Blanton et al. 2017]SDSS-IV containsthree core programs:Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2)provides high-resolution near-infrared spectra of hundreds of thousands of Milky-Way stars with the goal ofimproving our understanding of the history of the Milky Way and of stellar astrophysics.Mapping Nearby Galaxies at Apache Point Observatory (MaNGA)obtains spatially resolved spectra for thousands of nearby galaxiesto better understand the evolutionary histories of galaxies and what regulates their star formation

  8. Evolutionary origin of type IV classical cadherins in arthropods.

    Science.gov (United States)

    Sasaki, Mizuki; Akiyama-Oda, Yasuko; Oda, Hiroki

    2017-06-17

    Classical cadherins are a metazoan-specific family of homophilic cell-cell adhesion molecules that regulate morphogenesis. Type I and type IV cadherins in this family function at adherens junctions in the major epithelial tissues of vertebrates and insects, respectively, but they have distinct, relatively simple domain organizations that are thought to have evolved by independent reductive changes from an ancestral type III cadherin, which is larger than derived paralogs and has a complicated domain organization. Although both type III and type IV cadherins have been identified in hexapods and branchiopods, the process by which the type IV cadherin evolved is still largely unclear. Through an analysis of arthropod genome sequences, we found that the only classical cadherin encoded in chelicerate genomes was the type III cadherin and that the two type III cadherin genes found in the spider Parasteatoda tepidariorum genome exhibited a complex yet ancestral exon-intron organization in arthropods. Genomic and transcriptomic data from branchiopod, copepod, isopod, amphipod, and decapod crustaceans led us to redefine the type IV cadherin category, which we separated into type IVa and type IVb, which displayed a similar domain organization, except type IVb cadherins have a larger number of extracellular cadherin (EC) domains than do type IVa cadherins (nine versus seven). We also showed that type IVa cadherin genes occurred in the hexapod, branchiopod, and copepod genomes whereas only type IVb cadherin genes were present in malacostracans. Furthermore, comparative characterization of the type IVb cadherins suggested that the presence of two extra EC domains in their N-terminal regions represented primitive characteristics. In addition, we identified an evolutionary loss of two highly conserved cysteine residues among the type IVa cadherins of insects. We provide a genomic perspective of the evolution of classical cadherins among bilaterians, with a focus on the Arthropoda

  9. IRIS Responsiveness to Generation IV Road-map Goals

    International Nuclear Information System (INIS)

    Carelli, M.D.; Paramonov, D.V.; Petrovic, B.

    2002-01-01

    The DOE Generation IV road-map process is in its second and final year. Almost one hundred concepts submitted from all over the world have been reviewed against the Generation IV goals of resources sustainability; safety and reliability; and, economics. Advanced LWRs are taken as the reference point. IRIS (International Reactor Innovative and Secure), a 100-335 MWe integral light water reactor being developed by a vast international consortium led by Westinghouse, is one on the concepts being considered in the road-map and is perhaps the most visible representative of the concept set known as Integral Primary System Reactors (IPSR). This paper presents how IRIS satisfies the prescribed goals. The first goal of resource sustainability includes criteria like utilization of fuel resources, amount and toxicity of waste produced, environmental impact, proliferation and sabotage resistance. As a thermal reactor IRIS does not have the same fuel utilization as fast reactors. However, it has a significant flexibility in fuel cycles as it is designed to utilize either UO 2 or MOX with straight burn cycles of 4 to 10 years, depending on the fissile content. High discharge burnup and Pu recycling result in good fuel utilization and lower waste; IRIS has also attractive proliferation resistance characteristics, due to the reduced accessibility of the fuel. The safety and reliability goal include reliability, workers' exposure, robust safety features, models with well characterized uncertainty, source term and mechanisms of energy release, robust mitigation of accidents. IRIS is significantly better than advanced LWRs because of its safety by design which eliminates a variety of accidents such as LOCAs, its containment vessel coupled design which maintains the core safely covered during the accident sequences, its design simplification features such as no (or reduced) soluble boron, internal shielding and four-year refueling/maintenance interval which significantly reduce

  10. Ion exchange characteristics of cerium (IV) and Tin(IV) antimonates and their use in rad waste treatment

    Energy Technology Data Exchange (ETDEWEB)

    Elnaggar, I M; Abdel Hamid, M M; Elabsy, M A; Aly, H F [Hot lab. centre, atomic energy authority, Cairo, (Egypt)

    1995-10-01

    Cerium (IV) and Tin(IV) antimonates cation exchangers have been synthesized. The products were characterized by powdered X-ray diffraction, thermal analysis and infrared spectrometry. The data of the distribution coefficients showed that the selectivity decreased in the order Eu{sup 3+}>Co{sup 2+}>Sr{sup 2+}>Cs{sup +} for both materials. Besides, the drying temperature of the matrices have a profound effect on their ion exchange capacities. Moreover, the obtained results of the effect of gamma radiation on the ion exchange behaviour of the samples showed that a slight decrease of the capacity and the distribution coefficient values with increasing the absorbed dose. 2 figs., 4 tabs.

  11. Amine and Titanium (IV Chloride, Boron (III Chloride or Zirconium (IV Chloride-Promoted Baylis-Hillman Reactions

    Directory of Open Access Journals (Sweden)

    Shi-Cong Cui

    2001-10-01

    Full Text Available The Baylis-Hillman reactions of various aryl aldehydes with methyl vinyl ketone at temperatures below -20oC using Lewis acids such as titanium (IV chloride, boron (III chloride or zirconium (IV chloride in the presence of a catalytic amount of selected amines used as a Lewis bases afford the chlorinated compounds 1 as the major product in very high yields. Acrylonitrile can also undergo the same reaction to give the corresponding chlorinated product in moderate yield. A plausible reaction mechanism is proposed. However, if the reaction was carried out at room temperature (ca. 20oC, then the Z-configuration of the elimination product 3, derived from 1, was formed as the major product.

  12. Tratamento da síndrome parkinsoniana pelo L-dopa Parkinsonism's treatment by L-Dopa

    Directory of Open Access Journals (Sweden)

    Roberto Melaragno

    1971-12-01

    Full Text Available O trabalho refere o tratamento com L-Dopa de 33 pacientes internados, sendo 19 homens e 14 mulheres. Os casos foram agrupados, segundo uma classificação esquemática, em leves, moderados, intensos e severos. As idades dos pacientes, previamente operados ou não, variaram de 42 a 78 anos. O esquema de medicação constou de administração de L-Dopa na dose inicial de 500 mg associado a um inibidor da MAO. A dose de L-Dopa era elevada de 500 mg cada 3 ou 4 dias, segundo a tolerância de cada paciente. Todos os sintomas dependentes, direta ou indiretamente, da rigidez tiveram melhoras mais nítidas em relação aos tremores. Durante a administração do medicamento os teores sangüíneos de ácido úrico e uréia, mostraram tendência para se elevar; a reserva alcalina, pelo contrário, tendeu para a diminuição; o hemograma revelou muitas vezes eosinofilia por vezes intensa. Os efeitos colaterais foram catalogados em dois tipos — efeitos adrenérgicos e efeitos dopaminérgicos — correspondentes a duas fases: uma primeira, de pequena duração, na qual foram usados concomitantemente o L-Dopa e um inibidor da MAO, surgindo cefaléia hipertensão arterial paroxística, rubor facial, sudorese, tenesmo vesical e angina pectoris; numa segunda fase surgiram os efeitos colaterais ditos dopaminérgicos, proporcionais à gravidade clínica do caso, cujas manifestações principais foram hipotensão arterial, sudorese fria, arritmia cardíaca e lipotimia. As complicações clínicas gerais eram representados habitualmente por anorexia, obstipação intestinal, náuseas, vômitos, discretas alterações do estado psíquico com depressão e euforia. Dentre as complicações neurológicas foram assinalados o estado parkinsonóide, discinesias e acatisia.The results of the treatment with L-Dopa of 33 patients (19 males and 14 females are reported. The cases were separated, acording to their symptoms and signs, in slight, moderate, intense and severe ones

  13. Lesão do colo do cafeeiro, causada pelo calor Collar injury- young coffe plants caused by heat

    Directory of Open Access Journals (Sweden)

    Coaracy M. Franco

    1961-01-01

    Full Text Available Tem sido observada ocasionalmente uma lesão no colo de cafeeiros novos ao nível do solo. .Estudos dc laboratório mostraram que o caule de cafeeiros novos foram danificados quando ao redor dêle se fêz circular água aquecida às temperaturas de 45 o 50ºC. O aquecimento da superfície do solo, compreendendo o colo de cafeeiro vegetando em laminados, com o auxílio de uma lâmpada de raios infravermelhos, resultou em lesão semelhante àquela observada nas culturas. Essa lesão apareceu em tratamentos cujas temperaturas estiveram entre 44 e 51°C. O fato dessas temperaturas serem freqüentemente observadas em solos expostos ao sol, sugere que a lesão do caule do cafeeiro, observada freqüentemente em cafèzais novos, seja conseqüência do aquecimento excessivo da superfície do solo pelos raios solares.A collar injury of young, field coffee plants at the soil level has been observed occasionally in the summer. The location of the abnormality and the season when it appears .suggested that excessive heating of the soil surface by the sun rays could be its cause. Two experiments were then conducted in the laboratory to investigate this bypothesis. The first experiment consisted in circulating water at the desired temperature around the stem ofyoung coffee plants, using the same apparatus described in a previous paper. In a second experiment the base of the stem and the soil around it was heated by means of a G. E. 250 watts infrared industrial reflector. By changing the distance between the heat source and the plant, different temperatures at the soil surface could be obtained. The results of the first experiment showed that 4 plants out of o that were treated at 45ºC showed injury; the other 2 plants survived without damage. From 5 plants that were treated at 50ºC, 2 showed injury and 3 died shortly after the treatment. All plants subjected to the temperature treatments at 35°C and 40ºC survived without damage, while those treated at 55º

  14. Crescimento e absorção de nutrientes pelo feijoeiro adubado com cama de aves e fertilizantes minerais

    Directory of Open Access Journals (Sweden)

    Késia Silva Lourenço

    2013-04-01

    Full Text Available O feijoeiro é tradicionalmente cultivado em pequenas propriedades, onde é comum o uso de dejetos animais para adubação das culturas. Como é uma cultura de ciclo curto, os nutrientes precisam estar disponíveis logo após a germinação, o que nem sempre acontece quando a fertilização ocorre a partir de fertilizantes orgânicos. Neste trabalho, objetivou-se avaliar a eficiência de diferentes camas de aves em relação aos fertilizantes minerais na produção de matéria seca e na liberação de nutrientes para o feijoeiro, em casa de vegetação. O experimento foi conduzido em 2010, com amostras de um Latossolo Vermelho distroférrico com 16 g kg-1 de matéria orgânica, 1,9 e 84 mg dm-3 de P e K, respectivamente, e pH 6,0. Adotou-se delineamento experimental de blocos casualizados com 10 tratamentos e cinco repetições. As unidades experimentais foram constituídas por vasos com 14 dm³ de solo e cinco plantas de feijão, do cultivar BRS Requinte, durante 60 dias. Os tratamentos consistiram de cinco camas de aves compostas pelos seguintes materiais: palha de milho, bagaço de cana-de-açúcar, palha de pastagem natural, areia ou acícula de Pinus, formulações de nutrientes (NPK, NP, PK e NK e um testemunha, sem nenhum fertilizante. Os fertilizantes minerais com P proporcionaram maior produção de matéria seca da parte aérea (MSPA e de raízes (MSRA do feijoeiro do que as camas de aves, por causa da maior liberação para o solo de N e P disponíveis. Dentre as camas estudadas, aquela constituída por areia foi a que proporcionou os maiores valores de MSPA e de MSRA. As plantas fertilizadas com as camas de aves acumularam, em média, 58,6 % do N e 59,0 % do P, em relação às fertilizadas com os tratamentos que continham N e P minerais. A taxa de recuperação pelas plantas de N e K foi maior para os nutrientes aplicados na forma mineral do que na orgânica. As camas de aves podem ser utilizadas como fertilizantes para a cultura do

  15. C-terminal region of DNA ligase IV drives XRCC4/DNA ligase IV complex to chromatin

    International Nuclear Information System (INIS)

    Liu, Sicheng; Liu, Xunyue; Kamdar, Radhika Pankaj; Wanotayan, Rujira; Sharma, Mukesh Kumar; Adachi, Noritaka; Matsumoto, Yoshihisa

    2013-01-01

    Highlights: •Chromatin binding of XRCC4 is dependent on the presence of DNA ligase IV. •C-terminal region of DNA ligase IV alone can recruit itself and XRCC4 to chromatin. •Two BRCT domains of DNA ligase IV are essential for the chromatin binding of XRCC4. -- Abstract: DNA ligase IV (LIG4) and XRCC4 form a complex to ligate two DNA ends at the final step of DNA double-strand break (DSB) repair through non-homologous end-joining (NHEJ). It is not fully understood how these proteins are recruited to DSBs. We recently demonstrated radiation-induced chromatin binding of XRCC4 by biochemical fractionation using detergent Nonidet P-40. In the present study, we examined the role of LIG4 in the recruitment of XRCC4/LIG4 complex to chromatin. The chromatin binding of XRCC4 was dependent on the presence of LIG4. The mutations in two BRCT domains (W725R and W893R, respectively) of LIG4 reduced the chromatin binding of LIG4 and XRCC4. The C-terminal fragment of LIG4 (LIG4-CT) without N-terminal catalytic domains could bind to chromatin with XRCC4. LIG4-CT with W725R or W893R mutation could bind to chromatin but could not support the chromatin binding of XRCC4. The ability of C-terminal region of LIG4 to interact with chromatin might provide us with an insight into the mechanisms of DSB repair through NHEJ

  16. MACKLIB-IV: a library of nuclear response functions generated with the MACK-IV computer program from ENDF/B-IV

    International Nuclear Information System (INIS)

    Gohar, Y.; Abdou, M.A.

    1978-03-01

    MACKLIB-IV employs the CTR energy group structure of 171 neutron groups and 36 gamma groups. A retrieval computer program is included with the library to permit collapsing into any other energy group structure. The library is in the new format of the ''MACK-Activity Table'' which uses a fixed position for each specific response function. This permits the user when employing the library with present transport codes to obtain directly the nuclear responses (e.g. the total nuclear heating) summed for all isotopes and integrated over any geometrical volume. The response functions included in the library are neutron kerma factor, gamma kerma factor, gas production and tritium-breeding functions, and all important reaction cross sections. Pertinent information about the library and a graphical display of six response functions for all materials in the library are given

  17. Towards Revised Step IV MICE Optics in the Absence of M1 SSD

    Energy Technology Data Exchange (ETDEWEB)

    Bayes, R. [Univ. of Glasgow, Scotland (United Kingdom); Berg, J. S. [Brookhaven National Lab. (BNL), Upton, NY (United States); Blackmore, V. [Imperial College, London (United Kingdom); Hunt, C. [Imperial College, London (United Kingdom); Liu, A. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Pasternak, J. [Imperial College, London (United Kingdom); Rogers, C. T. [Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab. (RAL)

    2015-10-01

    During magnet commissioning in September 2015, the leads on coil M1 of the downstream spectrometer solenoid failed. The coil will not be operational for MICE Step IV. Revised optics settings for the Step IV data taking are reviewed.

  18. ASN’s actions in GEN IV reactors and Sodium Fast Reactors (SFR)

    International Nuclear Information System (INIS)

    Belot, Clotilde

    2013-01-01

    The ASN is involved in 3 actions concerning GEN IV: • Overview of nuclear reactor GEN IV systems; • Specific analysis about transmutation; • Prototype reactor ASTRID (SFR). Furthermore theses actions are in the beginning (no conclusions or results available)

  19. Preparation of UO_2 Fine Particle by Hydrolysis of Uranium(IV) Alkoxide

    OpenAIRE

    Satoh, Isamu; Takahashi, Mitsuyuki; Miura, Shigeyuki

    1997-01-01

    Fine particles of uranium(IV) dioxides were obtained by hydrolysis of uranium(IV) ethoxide which was synthesized by reacting uranium tetrachloride with sodium ethoxide. The monodispersed submicrometer particles were confirmed by SEM observation.

  20. Aflibercept and FOLFOX6 Treatment for Previously Untreated Stage IV Colorectal Cancer

    Science.gov (United States)

    2018-04-03

    Mucinous Adenocarcinoma of the Colon; Mucinous Adenocarcinoma of the Rectum; Signet Ring Adenocarcinoma of the Colon; Signet Ring Adenocarcinoma of the Rectum; Stage IV Colon Cancer; Stage IV Rectal Cancer