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1

Portable exhausters POR-004 SKID B, POR-005 SKID C, POR-006 SKID D storage plan  

SciTech Connect

This document provides a storage plan for portable exhausters POR-004 SKID B, POR-005 SKID C, AND POR-006 SKID D. The exhausters will be stored until they are needed by the TWRS (Tank Waste Remediation Systems) Saltwell Pumping Program. The storage plan provides criteria for portable exhauster storage, periodic inspections during storage, and retrieval from storage.

Nelson, O.D.

1997-09-04

2

Enteritis por radiación PDQ Redirect Spanish  

Cancer.gov

Enteritis por radiación PDQ Redirect Spanish El sumario de información del PDQ® Enteritis por radiación ha sido incorporado al sumario de información Complicaciones gastrointestinales. Para proseguir utilice unos de los siguientes enlaces.(The Radiation

3

INFLUNCIA DA SATURA?ˆO POR BASES E DO F\\  

Microsoft Academic Search

1 RESUMO ñ Este trabalho teve por objetivo avaliar o desempenho de mudas da espØcie angico-branco (Anadenanthera colubrina (Vell.) Brenan), em condiÁies diferenciadas de disponibilidade de fÛsforo no solo e de saturaÁªo por bases. Os tratamentos foram representados por um fatorial de seis nÌveis de P (0, 100, 200, 300, 400 e 500 mg\\/dm 3 ) por cinco nÌveis de

Cristina de Oliveira Gomes; Haroldo Nogueira de Paiva; Lima Neves; Ricardo Silva

2004-01-01

4

TRIPANOSOMOSIS (TRANSMITIDA POR LA MOSCA TSE—TSÉ)  

Microsoft Academic Search

RESUMEN La tripanosomosis 1 transmitida por la mosca tse-tsé es una enfermedad compleja producida por varias especies de protozoos parásitos del género Trypanosoma, transmitida cíclicamente por el género Glossina (mosca tse-tsé). Esta enfermedad puede afectar a varias especies de mamíferos pero, desde el punto de vista económico, la tripanosomosis trasmitida por la mosca tse-tsé, es especialmente importante en el ganado

2004-01-01

5

Consideraciones clínicas sobre la resorción radicular externa por impactación dentaria  

Microsoft Academic Search

La resorción externa por presión (RREP) consiste en una pérdida de tejido dentinario y cementario de las raíces dentarias que se origina a nivel del ligamento periodontal, ocasionada por presiones prolongadas y mantenidas sobre la raíz. Presentamos tres casos con diferente repercusión y tratamiento. Según el distinto grado de afecta­ ción se describe y clasifica el tratamiento de RREP a

Martínez Lozano MA; Forner Navarro L; Sánchez Cortés JL

6

Biopsia de ganglio linfático centinela  

Cancer.gov

Hoja informativa que describe el procedimiento de biopsia de ganglio linfático centinela, su uso para determinar la extensión, o estadio, del cáncer en el cuerpo, y los resultados de investigación sobre el uso de este tipo de biopsia en cáncer de seno y melanoma.

7

Infección por VIH y el riesgo de cáncer  

Cancer.gov

Hoja informativa que describe el mayor riesgo de ciertos tipos de cánceres que presentan las personas con infección por VIH. Dichos cánceres son el sarcoma de Kaposi, los linfomas de Hodgkin y no Hodgkin, y los cánceres de ano, de cérvix, de hígado y de pulmón. Trata también de lo que las personas con infección por VIH pueden hacer para reducir su riesgo de cáncer o para detectar temprano la enfermedad.

8

China y EE.UU.: La Competencia por Asia  

Microsoft Academic Search

El presente trabajo tendrá como objeto analizar el desenvolvimiento de la política exterior china en el ámbito asiático. Además, la nueva doctrina estratégica de Washington y su política sobre Asia y Corea Del Norte, son susceptibles de crear inconvenientes serios para los intereses estratégicos de Beijing. Se intentará dar un panorama de los cambios sufridos en las relaciones sino\\/norteamericanas por

Gustavo A. Cardozo; Coordinador Programa Asia-Pacifico

9

Diarrea intratable causada por anomalías congénitas de los enterocitos  

Microsoft Academic Search

ExtractoFundamento: La diarrea intratable de la lactancia representa un problema grave que conlleva un grado elevado de morbilidad y mortalidad. Estos casos requieren una asistencia dedicada tanto por parte de los padres como del personal médico, dado que no se dispone de remedios fáciles. La escasez de pacientes indica que para progresar en el conocimiento de estos trastornos son necesarios

Alan D. Phillips

2006-01-01

10

Arabidopsis protochlorophyllide oxidoreductase A (PORA) restores bulk chlorophyll synthesis and normal development to a porB porC double mutant.  

PubMed

In angiosperms the strictly light-dependent reduction of protochlorophyllide to chlorophyllide is catalyzed by NADPH:protochlorophyllide oxidoreductase (POR). The Arabidopsis thaliana genome encodes three structurally related but differentially regulated POR genes, PORA, PORB and PORC. PORA is expressed primarily early in development-during etiolation, germination and greening. In contrast, PORB and PORC are not only expressed during seedling development but also throughout the later life of the plant, during which they are responsible for bulk chlorophyll synthesis. The Arabidopsis porB-1 porC-1 mutant displays a severe xantha (highly chlorophyll-deficient) phenotype characterized by smaller prolamellar bodies in etioplasts and decreased thylakoid stacking in chloroplasts. Here we have demonstrated the ability of an ectopic PORA overexpression construct to restore prolamellar body formation in the porB-1 porC-1 double mutant background. In response to illumination, light-dependent chlorophyll production, thylakoid stacking and photomorphogenesis are also restored in PORA-overexpressing porB-1 porC-1 seedlings and adult plants. An Arabidopsis porB-1 porC-1 double mutant can therefore be functionally rescued by the addition of ectopically expressed PORA, which suffices in the absence of either PORB or PORC to direct bulk chlorophyll synthesis and normal plant development. PMID:20012672

Paddock, Troy N; Mason, Mary E; Lima, Daniel F; Armstrong, Gregory A

2010-03-01

11

El Instituto Nacional del Cáncer publica nuevo atlas de mortalidad por cáncer  

Cancer.gov

El Instituto Nacional del Cáncer (NCI, por sus siglas en inglés) ha publicado un nuevo atlas, el Atlas de Mortalidad por Cáncer en los Estados Unidos, 1950-94, que muestra los patrones geográficos de las tasas de mortalidad por cáncer durante más de cuatro décadas, en más de 3.000 condados a lo largo del país.

12

Compton imaging with the PorGamRays spectrometer  

NASA Astrophysics Data System (ADS)

The PorGamRays project aims to develop a portable gamma-ray detection system with both spectroscopic and imaging capabilities. The system is designed around a stack of thin Cadmium Zinc Telluride (CZT) detectors. The imaging capability utilises the Compton camera principle. Each detector is segmented into 100 pixels which are read out through custom designed Application Specific Integrated Circuits (ASICs). This device has potential applications in the security, decommissioning and medical fields. This work focuses on the near-field imaging performance of a lab-based demonstrator consisting of two pixelated CZT detectors, each of which is bonded to a NUCAM II ASIC. Measurements have been made with point 133Ba and 57Co sources located ˜35 mm from the surface of the scattering detector. Position resolution of ˜20 mm FWHM in the x and y planes is demonstrated.

Judson, D. S.; Boston, A. J.; Coleman-Smith, P. J.; Cullen, D. M.; Hardie, A.; Harkness, L. J.; Jones, L. L.; Jones, M.; Lazarus, I.; Nolan, P. J.; Pucknell, V.; Rigby, S. V.; Seller, P.; Scraggs, D. P.; Simpson, J.; Slee, M.; Sweeney, A.; PorGamRays Collaboration

13

Suppression of cytochrome P450 reductase (POR) expression in hepatoma cells replicates the hepatic lipidosis observed in hepatic POR-null mice.  

PubMed

Cytochrome P450 reductase (POR) is a microsomal electron transport protein essential to cytochrome P450-mediated drug metabolism and sterol and bile acid synthesis. The conditional deletion of hepatic POR gene expression in mice results in a marked decrease in plasma cholesterol levels counterbalanced by the accumulation of triglycerides in lipid droplets in hepatocytes. To evaluate the role of cholesterol and bile acid synthesis in this hepatic lipidosis, as well as the possible role of lipid transport from peripheral tissues, we developed a stable, small interfering RNA (siRNA)-mediated cell culture model for the suppression of POR. POR mRNA and protein expression were decreased by greater than 50% in McArdle-RH7777 rat hepatoma cells 10 days after transfection with a POR-siRNA expression plasmid, and POR expression was nearly completely extinguished by day 20. Immunofluorescent analysis revealed a marked accumulation of lipid droplets in cells by day 15, accompanied by a nearly 2-fold increase in cellular triglyceride content, replicating the lipidosis seen in hepatic POR-null mouse liver. In contrast, suppression of CYP51A1 (lanosterol demethylase) did not result in lipid accumulation, indicating that loss of cholesterol synthesis is not the basis for this lipidosis. Indeed, addition of cholesterol to the medium appeared to augment the lipidosis in POR-suppressed cells, whereas removal of lipids from the medium reversed the lipidosis. Oxysterols did not accumulate in POR-suppressed cells, discounting a role for liver X receptor in stimulating triglyceride synthesis, but addition of chenodeoxycholate significantly repressed lipid accumulation, suggesting that the absence of bile acids and loss of farnesoid X receptor stimulation lead to excessive triglyceride synthesis. PMID:21368239

Porter, Todd D; Banerjee, Subhashis; Stolarczyk, Elzbieta I; Zou, Ling

2011-06-01

14

Acceptance test report for portable exhauster POR-008/Skid F  

SciTech Connect

Portable Exhauster POR-008 was procured via HNF-0490, Specification for a Portable Exhausted System for Waste Tank Ventilation. Prior to taking ownership, acceptance testing was performed at the vendors. However at the conclusion of testing a number of issues remained that required resolution before the exhausters could be used by Project W-320. The purpose of acceptance testing documented by this report was to demonstrate compliance of the exhausters with the performance criteria established within HNF-O49O, Rev. 1 following a repair and upgrade effort at Hanford. In addition, data obtained during this testing is required for the resolution of outstanding Non-conformance Reports (NCR), and finally, to demonstrate the functionality of the associated software for the pressure control and high vacuum exhauster operating modes provided for by W-320. Additional testing not required by the ATP was also performed to assist in the disposition and close out of receiving inspection report and for application design information (system curve). Results of this testing are also captured within this document.

Kriskovich, J.R.

1998-07-24

15

Cirurgia Endoscópica Nasossinusal e da Base do Crânio Guiada por Computador  

Microsoft Academic Search

Introdução: Apesar de nas últimas décadas, as cirurgias dos seios paranasais e base de crânio terem apresentado grande progresso, principalmente com o advento dos novos instrumentais, visualização endoscópica e estudos por imagem, ainda apresentam complicações de graus variáveis. A cirurgia guiada por computador (CGC), tecnologia introduzida há poucos anos, foi idealizada para auxiliar o cirurgião na localização precisa de estruturas

Aldo C. Stamm; Shirley Pignatari; Bruno B. Sebusiani; Marcos C. Galati; Sérgio Mitsuda; Rainer G. Haetinger

2002-01-01

16

Estudio Hidrológico del río Arlanzón a su paso por el Término Municipal de Burgos  

Microsoft Academic Search

Para la ordenación del territorio en el Término Municipal de Burgos se necesita conocer el riesgo de inundación por las aguas de los ríos Arlanzón, Vena, Cardeñadijo y Ubierna. Por ello, se ha realizado un estudio hidrológico de la cuenca del Arlanzón partiendo de los datos de precipitaciones, cartografía referente a usos del suelo, edafología, geología y topografía, fotografías aéreas

Iñigo OLEAGORDIA MONTAÑA; Rebeca RODRÍGUEZ GARCÍA; Joaquín NAVARRO HEVIA; CASTILLO NOVO

17

Colocación de marcapasos diafragmático por toracotomía mínima para tratamiento de hipoincoercible  

Microsoft Academic Search

RESUMEN Presentamos un caso de hipo incoercible de cuatro años de duración y con clínica de pérdida de peso y fatiga. Refractario al tratamiento médico. Se le implantó un marcapasos diafragmático por vía intratorácica. Este aparato controla los movimientos del diafragma por estimulación eléctrica del nervio frénico. Se consiguió con ello disminuir la intensidad de los episodios de hipo. Este

JUAN JOSÉ FIBLA; GUILLERMO GÓMEZ; CÉSAR FARINA; GASPAR ESTRADA; CARLOS LEÓN

18

Gliding motility and Por secretion system genes are widespread among members of the phylum bacteroidetes.  

PubMed

The phylum Bacteroidetes is large and diverse, with rapid gliding motility and the ability to digest macromolecules associated with many genera and species. Recently, a novel protein secretion system, the Por secretion system (PorSS), was identified in two members of the phylum, the gliding bacterium Flavobacterium johnsoniae and the nonmotile oral pathogen Porphyromonas gingivalis. The components of the PorSS are not similar in sequence to those of other well-studied bacterial secretion systems. The F. johnsoniae PorSS genes are a subset of the gliding motility genes, suggesting a role for the secretion system in motility. The F. johnsoniae PorSS is needed for assembly of the gliding motility apparatus and for secretion of a chitinase, and the P. gingivalis PorSS is involved in secretion of gingipain protease virulence factors. Comparative analysis of 37 genomes of members of the phylum Bacteroidetes revealed the widespread occurrence of gliding motility genes and PorSS genes. Genes associated with other bacterial protein secretion systems were less common. The results suggest that gliding motility is more common than previously reported. Microscopic observations confirmed that organisms previously described as nonmotile, including Croceibacter atlanticus, "Gramella forsetii," Paludibacter propionicigenes, Riemerella anatipestifer, and Robiginitalea biformata, exhibit gliding motility. Three genes (gldA, gldF, and gldG) that encode an apparent ATP-binding cassette transporter required for F. johnsoniae gliding were absent from two related gliding bacteria, suggesting that the transporter may not be central to gliding motility. PMID:23123910

McBride, Mark J; Zhu, Yongtao

2013-01-01

19

An investigation of exploitation versus exploration in GBEA optimization of PORS 15 and 16 Problems  

SciTech Connect

It was hypothesized that the variations in time to solution are driven by the competing mechanisms of exploration and exploitation.This thesis explores this hypothesis by examining two contrasting problems that embody the hypothesized tradeoff between exploration and exploitation. Plus one recall store (PORS) is an optimization problem based on the idea of a simple calculator with four buttons: plus, one, store, and recall. Integer addition and store are classified as operations, and one and memory recall are classified as terminals. The goal is to arrange a fixed number of keystrokes in a way that maximizes the numerical result. PORS 15 (15 keystrokes) represents the subset of difficult PORS problems and PORS 16 (16 keystrokes) represents the subset of PORS problems that are easiest to optimize. The goal of this work is to examine the tradeoff between exploitation and exploration in graph based evolutionary algorithm (GBEA) optimization. To do this, computational experiments are used to examine how solutions evolve in PORS 15 and 16 problems when solved using GBEAs. The experiment is comprised of three components; the graphs and the population, the evolutionary algorithm rule set, and the example problems. The complete, hypercube, and cycle graphs were used for this experiment. A fixed population size was used.

Koch, Kaelynn

2012-05-08

20

PorA Represents the Major Cell Wall Channel of the Gram-Positive Bacterium Corynebacterium glutamicum  

PubMed Central

The cell wall of the gram-positive bacterium Corynebacterium glutamicum contains a channel (porin) for the passage of hydrophilic solutes. The channel-forming polypeptide PorA is a 45-amino-acid acidic polypeptide with an excess of four negatively charged amino acids, which is encoded by the 138-bp gene porA. porA was deleted from the chromosome of C.glutamicum wild-type strain ATCC 13032 to obtain mutant ATCC 13032?porA. Southern blot analysis demonstrated that porA was deleted. Lipid bilayer experiments revealed that PorA was not present in the cell wall of the mutant strain. Searches within the known chromosome of C. glutamicum by using National Center for Biotechnology Information BLAST and reverse transcription-PCR showed that no other PorA-like protein is encoded on the chromosome or is expressed in the deletion strain. The porA deletion strain exhibited slower growth and longer growth times than the C. glutamicum wild-type strain. Experiments with different antibiotics revealed that the susceptibility of the mutant strain was much lower than that of the wild-type C. glutamicum strain. The results presented here suggest that PorA represents a major hydrophilic pathway through the cell wall and that C. glutamicum contains cell wall channels which are not related to PorA.

Costa-Riu, Noelia; Burkovski, Andreas; Kramer, Reinhard; Benz, Roland

2003-01-01

21

Aspectos macroeconómicos de las utilidades por compraventa de divisas de la cuenta especial de cambios  

Microsoft Academic Search

Este trabajo persigue dos objetivos. En primer lugar, se discute el origen de las utilidades por compraventa de divisas (UCVD) de la Cuenta Especial de Cambios (CEC) y la naturaleza de su trabajo al gobierno. En segundo término, se analizan los efectos macroeconómicos de la utilización de los recursos de las UCVD para la financiación del déficit del gobierno, haciendo

Armando Montenegro

1983-01-01

22

Primer reporte de enfermedad sistémica por arañazo de gato (Bartonella henselae) en el Perú  

Microsoft Academic Search

RESUMEN Introducción: la enfermedad por arañazo de gato(EAG) en la mayoría de las veces es descrita en su forma típica, las formas sistémicas son raras y de escaso reporte. La EAG puede tener una gran variedad de presentaciones, siendo algunas de ellas poco frecuentes. Es la primera vez que se reporta esta forma de presentación en el Perú. Caso clínico:

Pablo Manuel Polanco Aguilar; Mario Cornejo Giraldo; Elert Zapata Aguilar; Víctor Hugo; Calderón Arenas; Patricia Márquez Díaz; Ciro Maguiña Vargas

2008-01-01

23

Characterization of Plasmid pOR1 from Ornithobacterium rhinotracheale and Construction of a Shuttle Plasmid  

Microsoft Academic Search

The bacterium Ornithobacterium rhinotracheale has been recognized as an emerging pathogen in poultry since about 10 years ago. Knowledge of this bacterium and its mechanisms of virulence is still very limited. Here we report the development of a transformation system that enables genetic modification of O. rhinotracheale. The system is based on a cryptic plasmid, pOR1, that was derived from

Ruud Jansen; Niwat Chansiripornchai; Wim Gaastra; Jos P. M. van Putten

2004-01-01

24

Revisión de mejores prácticas en modelos de negocio utilizados por entidades microfinancieras  

Microsoft Academic Search

Este documento presenta tres modelos de negocio utilizados por entidades microfinancieras y que a nuestro entender son mejores prácticas en sus respectivos ámbitos de actuación. En primer lugar, el caso analizado de Banco Compartamos refleja un proceso de transformación exitosa de una organización no gubernamental sin ánimo de lucro en entidad bancaria. Adicionalmente, el éxito de su salida al mercado

Francesc Prior; Javier Santoma

2008-01-01

25

Mortalidade precoce por doenças do coração no brasil. Comparação com outros países  

Microsoft Academic Search

Objetivo - Comparar a mortalidade por doenças do coração e pela doença coronária (DC) nas faixas etárias dos 45 aos 64 anos, no período 1984-87, em capitais bra- sileiras com outros países. Métodos - Foram utilizadas as estatísticas oficiais de mortalidade de 8 capitais com boa qualidade de informa- ção: Belém, Recife, Salvador, Belo Horizonte, Rio de Ja- neiro, São

Paulo Andrade Lotufo

1998-01-01

26

Consecuencias de la restricción de peso impuesta por el deporte en la infancia  

Microsoft Academic Search

ExtractoActualmente, los competidores jóvenes emprenden programas de entrenamiento que se basan en un nivel elevado de actividad física desde una temprana edad. Este entrenamiento intensivo (volumen e intensidad) aumenta el gasto de energía, que tiene que ser compensado por una mayor ingesta nutricional. Los bailarines de ballet, los patinadores artísticos, los gimnastas o los gimnastas rítmicos comienzan a entrenar a

Nathalie Boisseau

2006-01-01

27

Otimização por Enxame de Partículas aplicado à formação e atuação de grupos robóticos  

Microsoft Academic Search

Resumo Neste artigo, descreve-se o modelo, a implementação e a avaliação da eficiência de Algoritmos de Otimização por Enxame de Partículas aplicados à formação e atuação de grupos robóticos. A atuação do grupo robótico é realizada sobre um desastre ambiental do tipo incêndio florestal. São avaliados diversos parâmetros que influenciam o comportamento da otimização, como inércia, confiança, tipos de modelos

Gustavo Pessin; Fernando Osório

2009-01-01

28

Qualidade de frutos de cinco híbridos de melão rendilhado em função do número de frutos por planta  

Microsoft Academic Search

RESUMO-Este trabalho teve por objetivo avaliar a qualidade de cinco híbridos de melão rendilhado, com dois e três frutos por planta, utilizando fibra da casca de coco e fertirrigação. Para tanto, foi instalado um experimento em casa de vegetação na UNESP-FCAV, Câmpus de Jaboticabal, com delineamento experimental em blocos ao acaso, em esquema fatorial 5 x 2, com quatro repetições.

Renata Castoldi; Hamilton César de Oliveira Charlo; Pablo Forlan Vargas; Leila Trevizan Braz

2008-01-01

29

Estudio Multicentrico de Prevalencia del Trastorno por Déficit de Atención e Hiperactividad en la República Argentina1  

Microsoft Academic Search

El presente es el primer estudio de prevalencia del Trastorno por Déficit de Atención realizado en la República Argentina. Se utilizó una muestra de inicial de 898 niños de 6 a 9 años correspondientes a los tres primeros años de escuelas primarias del Gran Buenos Aires que tras ser depurada quedó conformada por 801 niños de ambos sexos. Metodología: Para

Ruben O. Scandar

30

AVALIAÇÃO TEÓRICA E EXPERIMENTAL DO COMPORTAMENTO DE VIGAS DE CONCRETO ARMADO REFORÇADAS POR MEIO DA PROTENSÃO DE CABOS EXTERNOS  

Microsoft Academic Search

Resumo As patologias apresentadas por algumas estruturas e a necessidade de aumento da capacidade de carga de outras fizeram com que diversas técnicas fossem desenvolvidas para o reforço de vigas de concreto armado. Uma delas é a incorporação e protensão de cabos externos. O grande diferencial desta técnica quando comparada às demais é o seu caráter ativo, ou seja, por

Tatiana Gesteira; Martins de Almeida; João Bento de Hanai

31

Microestructura y propiedades mecánicas de conductores protónicos de alta temperatura crecidos por fusión de zona flotante  

Microsoft Academic Search

Se han estudiado conductores protónicos de alta temperatura (CPAT) fabricados por fusión de zona flotante asistida por láser (SrCe 0.9Y0.1O3-?, SrCe0.8Y0.2O3-?, SrZr0.9Y0.1O3-?, SrZr0.8Y0.2O3-?, Sr3(Ca1.18Nb1.82)O9-? y SrTi0.95Sc0.05O3-?). La caracterización microestructural se ha realizado mediante Microscopía Electrónica de Barrido y Transmisión (MEB, MET). Los materiales tienen una estructura celular, con células de anchuras entre 10-50 µm y regiones intercelulares superiores a 1

M. J. López RobLedo; A. SA

32

ATP for the portable 500 CFM exhauster POR-006 skid D  

SciTech Connect

This Acceptance Test Plan is for a 500 CFM Portable Exhauster POR-006 to be used for saltwell pumping. The Portable Exhauster System will be utilized to eliminate potential flammable gases that may exist within the dome space of the tank. This Acceptance Plan will test and verify that the exhauster meets the specified design criteria, safety requirements, operations requirements, and will provide a record of the functional test results.

Keller, C.M.

1997-07-29

33

Comparação da sensibilidade de bovinos e búfalos à intoxicação por Palicourea marcgravii (Rubiaceae)1  

Microsoft Academic Search

Barbosa J. D., Oliveira C. M. C., Tokarnia C. H. & Riet-Correa F. 2003. (Comparison of the sensibility of cattle and buffaloes to poisoning by Palicourea marcgravii (Rubiaceae).) Comparação da sensibilidade de bovinos e búfalos à intoxicação por Palicourea marcgravii (Rubiaceae). Pesquisa Veterinária Brasileira 23(4):167-172. Escola de Medicina Veterinária, Campus Castanhal, Universidade Federal do Pará, Rua Maximino Porpino 1000, Castanhal,

José Diomedes Barbosa; Carlos Magno; Chaves de Oliveira; Carlos Hubinger

34

ESTIMATIVAS DAS CONSTANTES ELÁSTICAS DA MADEIRA POR MEIO DE ONDAS ULTRA-SONORAS (ULTRA-SOM)  

Microsoft Academic Search

RESUMO: O trabalho tem como principal objetivo estimar as constantes elásticas da madeira, empre- gando-se uma metodologia não destrutiva, de ondas ultra-sonoras (ultra-som). Foram utilizadas madei- ras de quatro espécies: Fava Amargosa (Vataireopsis speciosa), Jequitiba Rosa (Cariniana micran- tha), Peroba d'Água (Rauwolfia paraensis) e Peroba Mico (Aspidosperma macrocarpum). Por meio da determinação das velocidades de propagação das ondas ultra-sonoras, baseando-se

Joaquim Carlos Gonçalez; Ailton Teixeira

35

Se calcula que los costos del cáncer ascenderán por lo menos a $158.000 millones en 2020  

Cancer.gov

Con base en el crecimiento y en el avance de edad de la población de EE. UU., se proyecta que los gastos médicos por cáncer en el año 2020 ascenderán por lo menos a $158.000 millones (en dólares de 2010); lo que significa un aumento de 27% sobre 2010. Si los instrumentos creados últimamente para diagnosticar, tratar y seguir observando el cáncer continúan subiendo de precio, los gastos médicos por cáncer podrían ascender hasta $207.000 millones. Las proyecciones están basadas en los datos más recientes disponibles acerca de la incidencia del cáncer, de supervivencia y de costos de atención médica.

36

Análise dos Conceitos Astronômicos Apresentados por Professores de Algumas Escolas Estaduais Brasileiras  

NASA Astrophysics Data System (ADS)

A razão para o desenvolvimento deste trabalho baseia-se no fato de que muitos professores da Educação Básica (EB) não lidam com conceitos relacionados à astronomia, e quando o fazem eles simplesmente seguem livros didáticos que podem conter erros conceituais. Como é de conhecimento geral a astronomia é um dos conteúdos a serem ensinados na EB fazendo parte dos Parâmetros Curriculares Nacionais e das Propostas Curriculares do Estado de São Paulo, mas é um fato, que vários pesquisadores apontam, a existência de muitos problemas no ensino da astronomia. Com o propósito de minimizar algumas dessas deficiências foi realizado um trabalho de pesquisa com a utilização de questionários pré e pós pesquisa, para tanto foi desenvolvido um Curso de Extensão Universitária para professores da Diretoria de Ensino Regional (DE) que abrange Mauá, Ribeirão Pires e Rio Grande da Serra (no Estado de São Paulo) com os seguintes objetivos: levantar concepções alternativas; subsidiar os professores por meio de palestras, debates e workshops, e verificar o sucesso da aprendizagem após o curso, adotando-se como referência, para a análise dos resultados, os dicionários de Língua Portuguesa (FERREIRA, 2004) e Enciclopédico de Astronomia e Astronáutica (MOUR?O, 1995). Portanto, dezesseis questões foram aplicadas antes e após o curso, assim pode-se verificar após a pesquisa que 100,0% dos professores sabiam os nomes das fases da Lua, 97,0% entenderam que o Sistema Solar é composto por oito planetas, 78,1% foram capazes de explicar como ocorre um eclipse lunar, um eclipse solar e um solstício, 72,7% sabiam como explicar a ocorrência das estações do ano; 64,5% explicaram corretamente a ocorrência do equinócio, 89,7% foram capazes de definir adequadamente o termo cometa; 63,6% definiram asteróide, 54,5% meteoro, 58,1% galáxia, e 42,4% planeta. Os resultados obtidos indicam uma aprendizagem significativa por parte dos participantes.

Voelzke, Marcos Rincon; Gonzaga, Edson Pereira

2011-12-01

37

Characterization of Plasmid pOR1 from Ornithobacterium rhinotracheale and Construction of a Shuttle Plasmid  

PubMed Central

The bacterium Ornithobacterium rhinotracheale has been recognized as an emerging pathogen in poultry since about 10 years ago. Knowledge of this bacterium and its mechanisms of virulence is still very limited. Here we report the development of a transformation system that enables genetic modification of O. rhinotracheale. The system is based on a cryptic plasmid, pOR1, that was derived from an O. rhinotracheale strain of serotype K. Sequencing indicated that the plasmid consisted of 14,787 nucleotides. Sequence analysis revealed one replication origin and several rep genes that control plasmid replication and copy number, respectively. In addition, pOR1 contains genes with similarity to a heavy-metal-transporting ATPase, a TonB-linked siderophore receptor, and a laccase. Reverse transcription-PCR demonstrated that these genes were transcribed. Other putative open reading frames exhibited similarities with a virulence-associated protein in Actinobacillus actinomycetemcomitans and a number of genes coding for proteins with unknown function. An Escherichia coli-O. rhinotracheale shuttle plasmid (pOREC1) was constructed by cloning the replication origin and rep genes from pOR1 and the cfxA gene from Bacteroides vulgatus, which codes for resistance to the antibiotic cefoxitin, into plasmid pGEM7 by using E. coli as a host. pOREC1 was electroporated into O. rhinotracheale and yielded cefoxitin-resistant transformants. The pOREC1 isolated from these transformants was reintroduced into E. coli, demonstrating that pOREC1 acts as an independent replicon in both E. coli and O. rhinotracheale, fulfilling the criteria for a shuttle plasmid that can be used for transformation, targeted mutagenesis, and the construction of defined attenuated vaccine strains.

Jansen, Ruud; Chansiripornchai, Niwat; Gaastra, Wim; van Putten, Jos P. M.

2004-01-01

38

Antigenic topology of chlamydial PorB protein and identification of targets for immune neutralization of infectivity.  

PubMed

The outer membrane protein PorB is a conserved chlamydial protein that functions as a porin and is capable of eliciting neutralizing Abs. A topological antigenic map was developed using overlapping synthetic peptides representing the Chlamydia trachomatis PorB sequence and polyclonal immune sera. To identify which antigenic determinants were surface accessible, monospecific antisera were raised to the PorB peptides and were used in dot-blot and ELISA-based absorption studies with viable chlamydial elementary bodies (EBs). The ability of the surface-accessible antigenic determinants to direct neutralizing Ab responses was investigated using standardized in vitro neutralization assays. Four major antigenic clusters corresponding to Phe(34)-Leu(59) (B1-2 and B1-3), Asp(112) -Glu(145) (B2-3 and B2-4), Gly(179)-Ala(225) (B3-2 to B3-4), and Val(261)-Asn(305) (B4-4 to B5-2) were identified. Collectively, the EB absorption and dot-blot assays established that the immunoreactive PorB Ags were exposed on the surface of chlamydial EBs. Peptide-specific antisera raised to the surface-accessible Ags neutralized chlamydial infectivity and demonstrated cross-reactivity to synthetic peptides representing analogous C. pneumoniae PorB sequences. Furthermore, neutralization of chlamydial infectivity by C. trachomatis PorB antisera was inhibited by synthetic peptides representing the surface-exposed PorB antigenic determinants. These findings demonstrate that PorB Ags may be useful for development of chlamydial vaccines. PMID:11994474

Kawa, Diane E; Stephens, Richard S

2002-05-15

39

Trazodona: ¿Nuevo enfoque selectivo para el tratamiento de los sofocos generados por la deprivación androgénica en el carcinoma prostático?  

Microsoft Academic Search

toxicidad nada despreciable. Dentro del tratamiento no hormonal de esta patología juegan un papel destacado los antidepresivos. Latrazodona,unantidepresivoSARI(inhibidoresdelarecaptacióndeserotonina\\/antagonistadela2A),conunperfildeactua - ciónmásselectivosobrelosreceptoresimplicadosenlossofocos;podríaserdegraninterés.Trazodonamuestraunagranafinidad por los receptores 5-HT 2A y una moderada afinidad por los receptores 5-HT 1A. Comoesconocidolosnivelesdeserotonina(5-hidroxitriptaminao5-HT)enmujerespostmenopáusicasestándisminuidos,nor - malizándoseconlasterapiassustitutivas.Todoellosugierequeladeprivaciónabruptadehormonassexualesdalugaraunareduc - ción en la circulación de serotonina, con el consiguiente aumento de sus receptores 5-HT 2A hipotalámicos. Estos receptores esta - rían implicados

Santiago Vilar González; Francesc Montañá Puig; Sebastiá Sabater Martí; Manuel Aguayo Martos

2009-01-01

40

A DNA Fusion Vaccine Induces Bactericidal Antibodies to a Peptide Epitope from the PorA Porin of Neisseria meningitidis?  

PubMed Central

An experimental DNA plasmid vaccine was developed based on a well-characterized and protective peptide epitope derived from a bacterial porin protein. For this study, we used the P1.16b serosubtype epitope, located in variable region (VR)2 in loop 4 of the PorA outer membrane (OM) porin from Neisseria meningitidis serogroup B strain MC58. A plasmid that encoded the entire loop (pPorAloop4) was prepared, as well as a fusion plasmid that encoded the loop in tandem with the fragment C (FrC) immunostimulatory sequence from tetanus toxin (pPorAloop4-FrC). The constructs were used for intramuscular immunization without exogenous adjuvant. Murine antisera raised to the pPorAloop4-FrC DNA fusion plasmid reacted significantly with OMs in enzyme-linked immunosorbent assay and with whole bacteria by immunofluorescence, whereas antisera raised to the pPorAloop4 DNA plasmid and to control plasmid showed little or no reactivity. Significantly, only the pPorALoop4-FrC plasmid induced bactericidal antibodies, demonstrating that the intrinsic immunostimulatory sequence was essential for inducing a protective immune response. The antibodies raised to the P1.16b pPorALoop4-FrC plasmid were serosubtype specific, showing no significant immunofluorescence reactivity or bactericidal activity against other PorA variants. These data provide proof of principle for a DNA fusion plasmid strategy as a novel approach to preparing vaccines based on defined, protective epitopes.

Zhu, Delin; Williams, Jeannette N.; Rice, Jason; Stevenson, Freda K.; Heckels, John E.; Christodoulides, Myron

2008-01-01

41

Aplicação do Método de Monte Carlo, GEANT 4 e SRIM 2003 no Projeto de um Tomógrafo por Feixe Prótons de Baixa Energia  

Microsoft Academic Search

Resumo - A radioterapia por feixe de prótons é uma alternativa altamente eficiente no tratamento do câncer. Atualmente, nos centros de tratamento por prótons, o cálculo de dose é baseada em imagens de tomografia computadorizadas de raio-x (CT) e o paciente é posicionado com auxílio de radiografias de raio-x. A alternativa proposta é a utilização da tomografia por feixe de

J. A. P. Setti; E. Milhoretto; S. R. Junior; H. R. Schelin; M. C. L. Klock; V. Denyak; R. Rocha; I. Evseev; O. Yevseyeva

42

Effect of SPM-based cleaning POR on EUV mask performance  

NASA Astrophysics Data System (ADS)

EUV masks include many different layers of various materials rarely used in optical masks, and each layer of material has a particular role in enhancing the performance of EUV lithography. Therefore, it is crucial to understand how the mask quality and patterning performance can change during mask fabrication, EUV exposure, maintenance cleaning, shipping, or storage. The fact that a pellicle is not used to protect the mask surface in EUV lithography suggests that EUV masks may have to undergo more cleaning cycles during their lifetime. More frequent cleaning, combined with the adoption of new materials for EUV masks, necessitates that mask manufacturers closely examine the performance change of EUV masks during cleaning process. We have investigated EUV mask quality and patterning performance during 30 cycles of Samsung's EUV mask SPM-based cleaning and 20 cycles of SEMATECH ADT exposure. We have observed that the quality and patterning performance of EUV masks does not significantly change during these processes except mask pattern CD change. To resolve this issue, we have developed an acid-free cleaning POR and substantially improved EUV mask film loss compared to the SPM-based cleaning POR.

Choi, Jaehyuck; Lee, Han-Shin; Yoon, Jinsang; Shimomura, Takeya; Friz, Alex; Montgomery, Cecilia; Ma, Andy; Goodwin, Frank; Kang, Daehyuk; Chung, Paul; Shin, Inkyun; Cho, H.

2011-10-01

43

Substrate-specific modulation of CYP3A4 activity by genetic variants of cytochrome P450 oxidoreductase (POR)  

PubMed Central

Objectives CYP3A4 receives electrons from P450 oxidoreductase (POR) to metabolize about 50% of clinically used drugs. There is substantial inter-individual variation in CYP3A4 catalytic activity that is not explained by CYP3A4 genetic variants. CYP3A4 is flexible and distensible, permitting it to accommodate substrates varying in shape and size. To elucidate mechanisms of variability in CYP3A4 catalysis, we examined the effects of genetic variants of POR, and explored the possibility that substrate-induced conformational changes in CYP3A4 differentially affect the ability of POR variants to support catalysis. Methods We expressed human CYP3A4 and four POR variants (Q153R, A287P, R457H, A503V) in bacteria, reconstituted them in vitro and measured the Michaelis constant and maximum velocity with testosterone, midazolam, quinidine and erythromycin as substrates. Results POR A287P and R457H had low activity with all substrates; Q153R had 76–94% of wild type (WT) activity with midazolam and erythromycin, but 129–150% activity with testosterone and quinidine. The A503V polymorphism reduced CYP3A4 activity to 61–77% of wild type with testosterone and midazolam, but had nearly wild type activity with quinidine and erythromycin. Conclusion POR variants affect CYP3A4 activities. The impact of a POR variant on catalysis by CYP3A4 is substrate-specific, probably due to substrate-induced conformational changes in CYP3A4.

Agrawal, Vishal; Choi, Ji Ha; Giacomini, Kathleen M.; Miller, Walter L.

2010-01-01

44

Fabrication of por-Si/SnO{sub x} nanocomposite layers for gas microsensors and nanosensors  

SciTech Connect

Two-phase nanocomposite layers based on porous silicon and nonstoichiometric tin oxide were fabricated by various methods. The structure, as well as elemental and phase composition, of the obtained nanocomposites were studied using transmission and scanning electron microscopy, Raman spectroscopy, Auger electron spectroscopy, and X-ray photoelectron spectroscopy. The results obtained confirm the formation of nanocomposite layers with a thickness as large as 2 {mu}m thick and SnO{sub x} stoichiometry coefficients x = 1.0-2.0. Significant tin diffusion into the porous silicon matrix with D{sub eff} Almost-Equal-To 10{sup -14} cm{sup 2} s{sup -1} was observed upon annealing at 770 K. Test sensor structures based on por-Si/SnO{sub x} nanocomposite layers grown by magnetron deposition showed fairly high stability of properties and sensitivity to NO{sub 2}.

Bolotov, V. V., E-mail: bolotov@obisp.oscsbras.ru; Korusenko, P. M.; Nesov, S. N.; Povoroznyuk, S. N.; Roslikov, V. E.; Kurdyukova, E. A.; Sten'kin, Yu. A.; Shelyagin, R. V.; Knyazev, E. V.; Kan, V. E.; Ponomareva, I. V. [Russian Academy of Sciences, Rzhanov Institute of Semiconductor Physics, Omsk Branch, Siberian Branch (Russian Federation)

2011-05-15

45

Impact of PPARA and POR polymorphisms on tacrolimus pharmacokinetics and new-onset diabetes in kidney transplant recipients.  

PubMed

Recent efforts have been made to identify genetic markers of CYP3A4 enzymatic activity within genes encoding for regulatory elements. The aim of the current study was to investigate the impact of polymorphism of PPARA and POR genes on tacrolimus (TAC) dose-adjusted trough concentration and risk of new-onset diabetes after transplantation (NODAT). A total of 241 White kidney transplant patients were genotyped for three functional single nucleotide polymorphisms: rs1057868 (*28) in POR, rs4253728:G>A, and rs4823613:A>G in PPARA. No significant genotype-dependent differences in TAC dose-adjusted trough concentration were observed for either POR or PPARA variants. No significant differences in the incidence of NODAT were observed between patients stratified by PPARA and POR genotypes. The frequency of NODAT among PPARA rs4253728 AA homozygotes (42%) was higher compared with heterozygotes (22%) and GG homozygotes (19%), but the difference was not significant. Testing TAC-medicated renal transplant recipients for POR and PPARA variants seems to have limited clinical application. PMID:24921414

Kurzawski, Mateusz; Malinowski, Damian; Dziewanowski, Krzysztof; Dro?dzik, Marek

2014-08-01

46

Utilidad de la biopsia cilindro guiada por control ecográfico en el diagnóstico y manejo de los tumores renales Usefulness of ultrasound-guided core biopsy in the diagnosis and management of renal tumours  

Microsoft Academic Search

SUMMARY Background: Ultrasound-guided core biopsy (USCB) has being increasingly used in the last years for diagnosis of renal masses. However, its use has not still reached a gene- ralised acceptance among radiologists and pathologists. Methods: Over a 6-year period (2000-2005), a total of 48 renal masses in 47 patients were biopsied under ultrasound guidance using 18G needles. Results: Males predominated

José I. López; Aitor Fernández de Larrinoa; Rosa Zabala; Laura Oleaga; José L. del Cura; Francisco J. Bilbao

47

Antitumor actinopyranones produced by Streptomyces albus POR-04-15-053 isolated from a marine sediment.  

PubMed

Four new antitumor pyranones, PM050511 (1), PM050463 (2), PM060054 (3), and PM060431 (4), were isolated from the cell extract of the marine-derived Streptomyces albus POR-04-15-053. Their structures were elucidated by a combination of spectroscopic methods, mainly 1D and 2D NMR and HRESIMS. They consist of an ?-methoxy-?-pyrone ring containing a highly substituted tetraene side chain glycosylated at C-10 in the case of 1 and 4. Compounds 1 and 4 displayed strong cytotoxicity against three human tumor cell lines with GI?? values in the submicromolar range, whereas 2 showed subnanomolar activity as an inhibitor of EGFR-MAPK-AP1-mediated mitogenic signaling, causing inhibition of EGF-mediated AP1 trans-activation and EGF-mediated ERK activation and slight inhibition of EGF-mediated JNK activation. Taken together, these results suggest that members of the pyranone family of compounds could be developed as potential antitumor agents. PMID:21718029

Schleissner, Carmen; Pérez, Marta; Losada, Alejandro; Rodríguez, Pilar; Crespo, Cristina; Zúñiga, Paz; Fernández, Rogelio; Reyes, Fernando; de la Calle, Fernando

2011-07-22

48

Comparación de resultados del método de clasificación de órbitas por análisis de frecuencias con el método de exponentes de Lyapunov  

NASA Astrophysics Data System (ADS)

Hemos realizado extensas comparaciones del método de análisis de frecuencias con el de exponentes de Lyapunov. El primero resulta claramente superior por las siguientes razones: 1) permite distinguir distintos tipos de órbitas y no sólo si son regulares o caóticas 2) es mucho más veloz requiriendo mucho menos tiempo de cómputo. La concordancia de resultados es, en general, buena y se discuten algunas discrepancias.

Carpintero, D. D.; Muzzio, J. C.; Wachlin, F. C.

49

INFLUENCIA DE LA MICROESTRUCTURA Y DE LOS ESTADOS TRIAXIALES DE TENSIONES EN FENÓMENOS DE FISURACIÓN INDUCIDA POR AMBIENTE  

Microsoft Academic Search

Resumen. La Fisuración Inducida por Hidrógeno (FIH), es uno de los fenómenos de corrosión bajo tensión más habitual en aquellas aplicaciones industriales que se encuentran en contacto con este elemento químico, como sucede en oleoductos, gasoductos, reactores de hydrotreating, etc. Existen numerosos estudios referentes al transporte y acumulación de hidrógeno en el metal, así como a la variación de propiedades

A. Cayón; J. A. Álvarez; F. Gutiérrez-Solana

2003-01-01

50

Estado actual del pretratamiento de las intoxicaciones por agentes neuro- tóxicos de guerra con piridostigmina y otras alternativas farmacológicas  

Microsoft Academic Search

Resumen: El bromuro de piridostigmina (bromuro de 3-dimeti- laminocarboniloxi-N-metilpiridinio) se utiliza como pretrata- miento en escenarios en los que existe riesgo de utilización de agentes neurotóxicos de guerra. De hecho, este pretratamiento fue utilizado por las tropas Aliadas durante la Guerra del Golfo Pérsico. Desde su vuelta a casa muchos veteranos de esta guerra se han quejado de padecer síntomas

Pita R; Martínez-Larrañaga

51

UMA ANÁLISE DOS ASPECTOS DISTRIBUTIVOS DA APOSENTADORIA POR TEMPO DE CONTRIBUIÇÃO DO INSS COM O EMPREGO DE MATEMÁTICA ATUARIAL  

Microsoft Academic Search

O objetivo do artigo é o cálculo de parâmetros usualmente adotados na literatura sobre previdência social, como as taxas de reposição previdenciária, alíquotas de contribuição atuarialmente justa e valores presentes de contribuições e de benefícios, para o caso brasileiro. Os cálculos são feitos para a Aposentadoria por Tempo de Contribuição (ATC) do Regime Geral de Previdência Social (RGPS) do INSS.

Daniela de Almeida Lima; Luís Eduardo Afonso

2010-01-01

52

PRIMER REPORTE SOBRE FOTOSENSIBILIZACION CAUSADA POR Pithomices chartarum EN BORREGOS PASTOREANDO Brachiaria brizantha. EN LA ZONA CENTRO DEL ESTADO DE TAMAULIPAS  

Microsoft Academic Search

RESUMEN: La creciente explosión demográfica, sobre todo en los países subdesarrollados, como lo es México, se han dado a la tarea de aumentar los productos alimentarios de origen animal por citar un ejemplo, la explotación de ovinos, mismo que a su vez se buscan nuevas alternativas para su alimentación, sobre todo con costos mínimos, por ello la utilización de recursos

O. S. Escamilla Gallegos; P. Zárate Fortuna; M. Rodríguez Morales; J. García Jiménez; M. González

53

MODELO EXPERIMENTAL DE FORMAÇÃO DE VARIZES ESOFÁGICAS POR HIPERTENSÃO PORTAL ESQUISTOSSOMÓTICA EM HAMSTERS EXPERIMENTAL MODEL OF ESOPHAGEAL VARICES' FORMATION IN SCHISTOSOMAL PORTAL HYPERTENSION  

Microsoft Academic Search

RESUMO: Objetivo: Desenvolver um modelo experimental de formação de varizes esofágicas por hipertensão portal esquistossomótica em hamsters. Método: Utilizamos 55 hamsters divididos em dois grupos: grupo I composto de 50 animais infectados com injeção percutânea de 100 cercarias de Schistosoma mansoni da cepa BH; e grupo II composto de cinco animais sadios (grupo de controle). Foram mantidos por um período

José Cesar Assef; Adriana Christina; Pozzobon de Oliveira Vieira; Hellen Christina; Garcia Saito; Carmen Lúcia Penteado Lancellotte; Luiz Arnaldo Szutan

54

The PorB porin from commensal Neisseria lactamica induces Th1 and Th2 immune responses to ovalbumin in mice and is a potential immune adjuvant  

PubMed Central

Porins from pathogenic Neisseriae are among several bacterial products with immune adjuvant activity. N. meningitidis (Nme) PorB, has been shown to induce immune cells activation in a TLR2-dependent manner and acts as a vaccine immune adjuvant. The PorB porin from Neisseria lactamica (Nlac), a common nasopharyngeal commensal shares significant structural and functional similarities with Nme PorB. In this work we ask whether the immune adjuvant ability of porins from pathogenic Neisserial strains is a characteristic shared with porins from non-pathogenic Neisserial species or whether it is unique for bacterial products derived from microorganisms capable of inducing inflammation and disease. We evaluate the potential immune adjuvant effect of Nlac PorB in mice using ovalbumin (OVA) as a prototype antigen. Immunization with Nlac PorB/OVA induced high OVA-specific IgG and IgM titers compared to OVA alone, similar to other adjuvants such as Nme PorB and alum. High titers of IgG1 and IgG2b were detected as well as production of IL-4, IL-10, IL-12 and INF-? in response to Nlac PorB, consistent with induction of both a Th1-type and a Th2-type immune response. OVA-specific proliferation was also determined in splenocytes from Nlac PorB/OVA immunized mice. In addition, B cell activation in vitro and cytokine production in response to Nlac PorB was found to be mediated by TLR2, in a similar manner to Nme PorB.

Liu, Xiuping; Wetzler, Lee M.; Massari, Paola

2008-01-01

55

Evolução da morfologia de fases de blendas PA6\\/AES em extrusora de dupla rosca e moldagem por injeção  

Microsoft Academic Search

Resumo: A evolução da morfologia de fases em blendas não reativas e reativas de poliamida-6 com copolímero de acrilonitrila\\/EPDM\\/estireno (AES) em uma extrusora de rosca dupla co-rotacional foi investigada. A evolução da morfologia de fases ao longo da extrusora de rosca dupla foi monitorada através da coleta de pequenas amostras em válvulas no barril da extrusora e caracterização por microscopia

Adriane Bassani; Elias Hage Jr; Luiz A. Pessan; Ana V. Machado; José A. Covas

2005-01-01

56

Estudio sobre las dosis de radiación y los riesgos de cáncer causados por la prueba atómica “Trinity” realizada en 1945  

Cancer.gov

El NCI tiene planeado realizar entrevistas en profundidad para determinar cuál era la alimentación característica de las poblaciones indígenas americanas, hispanas (latinas) y chicanas que vivían en New Mexico a mediados de 1940 y utilizar información fácilmente disponible sobre la alimentación y el estilo de vida de las poblaciones blancas. Estas entrevistas representan un paso importante para hacer estimaciones de las dosis de radiación generadas por la prueba Trinity.

58

Voltage dependent closure of PorB class II porin from Neisseria meningitidis investigated using impedance spectroscopy in a tethered bilayer lipid membrane interface.  

PubMed

Electrochemical impedance spectroscopy (EIS) was used to characterize voltage-dependent closure of PorB class II (PorBII) porin from Neisseria meningitidis incorporated in a tethered bilayer lipid membrane (tBLM). The tBLM's lower leaflet was fabricated by depositing a self assembled monolayer (SAM) of 1,2-dipalmitoyl-sn-glycero-3-phosphothioethanol (DPPTE) on a gold electrode, and the upper leaflet was formed by depositing1,2-dioleoyl-sn-glycero-3-phoshocholine (DOPC) liposomes. At 0mV bias DC potential, incorporation of PorBII decreased the membrane resistance (R(m)) from 2.5 M?c m(2) to 0.6 M? cm(2), giving a ?R(m) of 1.9 M? cm(2) and a normalized ?R(m) (?R(m) divided by the R(m) of the tBLM without PorBII) of 76%. When the bias DC potential was increased to 200 mV, the normalized ?R(m) value decreased to 20%. The effect of applied voltage on ?R(m) was completely reversible, suggesting voltage-dependent closure of PorBII. The voltage dependence of PorBII was further studied in a planar bilayer lipid membrane made from 1,2-diphytanoyl-sn-glycero-3-phosphocholine (DPhytPC). Following a single insertion event, PorBII exhibited multiple conductance states, with reversible, voltage-dependent closure of PorBII porin occurring at high transmembrane potentials. The trimetric porin closed in three discrete steps, each step corresponding to closure of one conducting monomer unit. The most probable single channel conductance was 4.2 nS. The agreement between results obtained with the tBLM and pBLM platforms demonstrates the utility of EIS to screen channel proteins immobilized in tBLM for voltage-gated behavior. PMID:23083768

Jadhav, Sachin R; Rao, Kota Sreenivasa; Zheng, Yi; Garavito, R Michael; Worden, R Mark

2013-01-15

59

Influence of Various Polymorphic Variants of Cytochrome P450 Oxidoreductase (POR) on Drug Metabolic Activity of CYP3A4 and CYP2B6  

PubMed Central

Cytochrome P450 oxidoreductase (POR) is known as the sole electron donor in the metabolism of drugs by cytochrome P450 (CYP) enzymes in human. However, little is known about the effect of polymorphic variants of POR on drug metabolic activities of CYP3A4 and CYP2B6. In order to better understand the mechanism of the activity of CYPs affected by polymorphic variants of POR, six full-length mutants of POR (e.g., Y181D, A287P, K49N, A115V, S244C and G413S) were designed and then co-expressed with CYP3A4 and CYP2B6 in the baculovirus-Sf9 insect cells to determine their kinetic parameters. Surprisingly, both mutants, Y181D and A287P in POR completely inhibited the CYP3A4 activity with testosterone, while the catalytic activity of CYP2B6 with bupropion was reduced to approximately ?70% of wild-type activity by Y181D and A287P mutations. In addition, the mutant K49N of POR increased the CLint (Vmax/Km) of CYP3A4 up to more than 31% of wild-type, while it reduced the catalytic efficiency of CYP2B6 to 74% of wild-type. Moreover, CLint values of CYP3A4-POR (A115V, G413S) were increased up to 36% and 65% of wild-type respectively. However, there were no appreciable effects observed by the remaining two mutants of POR (i.e., A115V and G413S) on activities of CYP2B6. In conclusion, the extent to which the catalytic activities of CYP were altered did not only depend on the specific POR mutations but also on the isoforms of different CYP redox partners. Thereby, we proposed that the POR-mutant patients should be carefully monitored for the activity of CYP3A4 and CYP2B6 on the prescribed medication.

Naranmandura, Hua; Zeng, Su; Chen, Shu Qing

2012-01-01

60

Estudio teórico de la desorción de Na y K de SiO2 estimulada por la acción de fotones o electrones  

NASA Astrophysics Data System (ADS)

Se ha estudiado el mecanismo de generación de sodio y potasio atómico a partir de muestras de SiO2 utilizando cálculos basados tanto en la teoría del funcional de la densidad como en métodos post-Hartree Fock, así como en el método de cluster para modelar el sólido. Como consecuencia del estudio se han propuesto distintos caminos posibles para la desorción, estimulada por la acción de fotones o electrones, de sodio y potasio desde el óxido de silicio, proporcionando por lo tanto una explicación a la atmósfera tenue de sodio y potasio de La Luna.

Domínguez Ariza, D.; López, N.; Illas, F.; Pacchioni, G.; Madey, T. E.

61

Vasculitis retiniana por VIH  

Microsoft Academic Search

Case reportWe present a case of a 47 year-old woman, infected with human immunodeficiency virus (HIV) diagnosed 5 years ago without receiving any treatment, who had floaters in her left eye. A peripheral retinal vasculitis was discovered and confirmed by an angiography. No source of infection was found, antiretroviral and corticosteroid treatment was given, with a complete resolution of the

P. Drake-Casanova; J. Paz Moreno-Arrones; M. Gorroño Echebarría; I. Dapena-Sevilla; J. Pareja-Esteban; E. Vleming-Pinilla

2010-01-01

62

Double-locus sequence typing using porA and peb1A for epidemiological studies of Campylobacter jejuni.  

PubMed

Campylobacter jejuni is the leading cause of foodborne bacterial gastroenteritis worldwide. Bacterial typing schemes play an important role in epidemiological investigations to trace the source and route of transmission of the infectious agent by identifying outbreak and differentiating among sporadic infections. In this study, a double-locus sequence typing (DLST) scheme for C. jejuni based on concatenated partial sequences of porA and peb1A genes is proposed. The DLST scheme was validated using 50 clinical and environmental C. jejuni strains isolated from human (C5, H, H15-H19), chicken (CH1-CH15), water (W2-W17), and ovine samples (OV1-OV6). The scheme was found to be highly discriminatory (discrimination index [DI]=0.964) and epidemiologically concordant based on C. jejuni strains studied. The DLST showed discriminatory power above 0.95 and excellent congruence to multilocus sequence typing and can be recommended as a rapid and low-cost typing scheme for epidemiological investigation of C. jejuni. It is suggested that the DLST scheme is suitable for identification of outbreak strains and differentiation of the sporadic infection strains. PMID:24404778

Ahmed, Monir U; Dunn, Louise; Valcanis, Mary; Hogg, Geoff; Ivanova, Elena P

2014-03-01

63

Timectomia estendida por cirurgia torácica videoassistida e cervicotomia no tratamento da miastenia * Extended thymectomy through video assisted thoracic surgery and cervicotomy in the treatment of myasthenia  

Microsoft Academic Search

Introdução: A relação entre a miastenia e o timo é evidente e o tratamento atual desta condição inclui a timectomia. No entanto, uma revisão de nossa experiência com a timectomia revelou a necessidade do uso de uma técnica mais radical. Objetivo: Analisar retrospectivamente pacientes portado- res de miastenia gravis que foram submetidos a timectomia radical por videotoracoscopia, ressaltando vantagens do

EDUARDO HARUO SAITO; GÉRSON C. MAGALHÃES; LUIZ CARLOS; AGUIAR VAZ; VICENTE FARIA CERVANTE

2003-01-01

64

Nuevo sitio web en español del Instituto Nacional del Cáncer, (NCI, por sus siglas en inglés) Cancer.gov en español - Silvia Inéz Salazar - transcript  

Cancer.gov

Transmisiones de radio para promover Cancer.gov en espa%XF1ol | Nuevo sitio web en espa%XF1ol del Instituto Nacional del C%XE1ncer, (NCI, por sus siglas en ingl%XE9s) Cancer.gov en espa%XF1ol | Transcripci%XF3n Transmisiones de radio para promover

65

Modelos teóricos que nos ayudan a comprender el gobierno de las sociedades cooperativas, una apuesta por el enfoque de los stakeholders  

Microsoft Academic Search

En la actualidad, el entorno competitivo es cada vez más incierto y complejo. Las características de los mercados actuales hacen que sea cada vez más difícil conseguir una ventaja competitiva sostenible en el tiempo para la empresa, por lo que hay que innovar en formas de gestión y de gobierno para ser competitivo. De esta manera, se está produciendo un

Cristina Pedrosa Ortega

2009-01-01

66

GERENCIAMENTO POR PROCESSO: UM ESTUDO DE CASO NO SETOR SUCROALCOOLEIRO BRASILEIRO PROCESS MANAGEMENT: A CASE STUDY OF THE BRAZILIAN SUGAR ALCOHOL SECTOR  

Microsoft Academic Search

Resumo: O objetivo deste trabalho é analisar os resultados da mudança na estrutura funcional de uma empresa sucroalcooleira, realizada por uma empresa de consultoria especializada em gestão empresarial. Assim, para a realização deste trabalho foi usado o método de estudo de caso único, baseado em relatórios de consultoria. Os principais resultados encontrados foram: (1) o retorno financeiro devido à mudança

Ricardo Alexandre Feliciano; Roberto Gilioli Rotondaro

67

El proceso hacia la integracion de la equidad por genero al curriculo.(The Process of the Integration of Gender Equity in the Curriculum.)  

ERIC Educational Resources Information Center

"El Proyecto Colaborativo de Equidad por Genero en la Educacion," or the Collaborative Project for Gender Equity in Education, was undertaken in Puerto Rico between 1990 and 1992 to study how to facilitate the integration of gender equity themes in the curriculum through the direct action of participating teachers. A study examined the attitudes…

Rivera-Bermudez, Carmen D.

68

Corynebacterium jeikeium jk0268 Constitutes for the 40 Amino Acid Long PorACj, Which Forms a Homooligomeric and Anion-Selective Cell Wall Channel  

PubMed Central

Corynebacterium jeikeium, a resident of human skin, is often associated with multidrug resistant nosocomial infections in immunodepressed patients. C. jeikeium K411 belongs to mycolic acid-containing actinomycetes, the mycolata and contains a channel-forming protein as judged from reconstitution experiments with artificial lipid bilayer experiments. The channel-forming protein was present in detergent treated cell walls and in extracts of whole cells using organic solvents. A gene coding for a 40 amino acid long polypeptide possibly responsible for the pore-forming activity was identified in the known genome of C. jeikeium by its similar chromosomal localization to known porH and porA genes of other Corynebacterium strains. The gene jk0268 was expressed in a porin deficient Corynebacterium glutamicum strain. For purification temporarily histidine-tailed or with a GST-tag at the N-terminus, the homogeneous protein caused channel-forming activity with an average conductance of 1.25 nS in 1M KCl identical to the channels formed by the detergent extracts. Zero-current membrane potential measurements of the voltage dependent channel implied selectivity for anions. This preference is according to single-channel analysis caused by some excess of cationic charges located in the channel lumen formed by oligomeric alpha-helical wheels. The channel has a suggested diameter of 1.4 nm as judged from the permeability of different sized hydrated anions using the Renkin correction factor. Surprisingly, the genome of C. jeikeium contained only one gene coding for a cell wall channel of the PorA/PorH type found in other Corynebacterium species. The possible evolutionary relationship between the heterooligomeric channels formed by certain Corynebacterium strains and the homooligomeric pore of C. jeikeium is discussed.

Norouzy, Amir; Schulz, Robert; Nau, Werner M.; Kleinekathofer, Ulrich; Tauch, Andreas; Benz, Roland

2013-01-01

69

ALTERAÇÃO POPULACIONAL DE CÉLULAS NA CAMADA INTRAEPITELIAL E ALTERAÇÕES MORFOLÓGICAS DA PAREDE INTESTINAL CAUSADA PELA INFECÇÃO POR Toxocara vitulorum EM BEZERROS BÚFALOS (Bubalus Bubalis)  

Microsoft Academic Search

NEVES, M.F.; STARKE-BUZETTI, W.A. (Populational alteration of cells in the intestinal intraepithelial layer and morphological changes of the intestinal wall elicited by Toxocara vitulorum infection in buffalo calves (Bubalus bubalis)). Alteração populacional de células na camada intraepitelial e alterações morfológicas da parede intestinal causada pela infecção por Toxocara vitulorum em bezerros búfalos (Bubalus Bubalis). Revista Brasileira de Parasitologia Veterinária, v.

MARIA FRANCISCA NEVES; WILMA A. STARKE-BUZETTI

2005-01-01

70

Neisseria meningitidis PorB, a Toll-Like Receptor 2 Ligand, Improves the Capacity of Francisella tularensis Lipopolysaccharide To Protect Mice against Experimental Tularemia  

Microsoft Academic Search

Francisella tularensis causes severe pneumonia that can be fatal if it is left untreated. Due to its potential use as a biological weapon, research is being conducted to develop an effective vaccine and to select and study adjuvant molecules able to generate a better and long-lasting protective effect. PorB, a porin from Neisseria meningitidis, is a well-established Toll-like receptor 2

Damiana Chiavolini; Susan Weir; John R. Murphy; Lee M. Wetzler

2008-01-01

71

Los índices de mortalidad por cáncer de pulmón siguen bajando y contribuyen a reducción de índices generales de muertes por cáncer; Informe Anual a la Nación tiene una sección especial de los efectos de otras enfermedades en la supervivencia de pacientes  

Cancer.gov

El Informe Anual a la Nación sobre el Estado del Cáncer (1975 a 2010), mostró un descenso más acelerado que en años anteriores de los índices de mortalidad por cáncer de pulmón. También contiene una sección especial que destaca los efectos significativos que tienen otras enfermedades en la supervivencia de pacientes con cáncer.

72

El Informe Anual a la Nación indica que las tasas de mortalidad por cáncer continúan declinando. Se observan tasas menores de cáncer en las poblaciones latinas de los Estados Unidos.  

Cancer.gov

Un informe nuevo de las principales organizaciones oncológicas de la nación informa que el riesgo de los estadounidenses de morir por cáncer continúa descendiendo, y que mantiene una tendencia que comenzó a principios de los años noventa. Preguntas y respuestas

73

Variation in P450 oxidoreductase (POR) A503V and flavin-containing monooxygenase (FMO)-3 E158K is associated with minor alterations in nicotine metabolism, but does not alter cigarette consumption.  

PubMed

The rates of nicotine metabolism differ widely, even after controlling for genetic variation in the major nicotine-metabolizing enzyme, CYP2A6. Genetic variants in an additional nicotine-metabolizing enzyme, flavin-containing monooxygenase (FMO)-3, and an obligate microsomal CYP-supportive enzyme, cytochrome P450 oxidoreductase (POR), were investigated. We examined the impact of FMO3 E158K and POR A503V before and after stratifying by CYP2A6 metabolism group. In 130 nonsmokers of African descent who received 4 mg oral nicotine, FMO3 158K trended toward slower nicotine metabolism in reduced CYP2A6 metabolizers (P=0.07) only, whereas POR 503V was associated with faster CYP2A6 activity (nicotine metabolite ratio) in normal (P=0.03), but not reduced, CYP2A6 metabolizers. Neither FMO3 158K nor POR 503V significantly altered the nicotine metabolic ratio (N=659), cigarette consumption (N=667), or urine total nicotine equivalents (N=418) in smokers of African descent. Thus, FMO3 E158K and POR A503V are minor sources of nicotine metabolism variation, insufficient to appreciably alter smoking. PMID:24448396

Chenoweth, Meghan J; Zhu, Andy Z X; Sanderson Cox, Lisa; Ahluwalia, Jasjit S; Benowitz, Neal L; Tyndale, Rachel F

2014-03-01

74

Estudio de exámenes selectivos de detección de cáncer en los Estados Unidos indica que las pruebas anuales para detectar cáncer de próstata no tienen un beneficio en la mortalidad por esta enfermedad  

Cancer.gov

Un nuevo e importante informe de un estudio, diseñado para proporcionar respuestas sobre la eficacia de los exámenes de detección de cáncer de próstata, fue difundido hoy por el Estudio de Exámenes Selectivos de Detección de Cáncer de Próstata, Pulmón, Colorrectal y Ovarios (Prostate, Lung, Colorectal, and Ovarian, PLCO), e indicó que los seis exámenes de detección de cáncer de próstata que se hicieron en seis años (uno cada año) dieron como resultado más diagnósticos de la enfermedad, pero no menos muertes por cáncer de próstata.

75

IgE Reactivity of Blue Swimmer Crab (Portunus pelagicus) Tropomyosin, Por p 1, and Other Allergens; Cross-Reactivity with Black Tiger Prawn and Effects of Heating  

PubMed Central

Shellfish allergy is a major cause of food-induced anaphylaxis, but the allergens are not well characterized. This study examined the effects of heating on blue swimmer crab (Portunus pelagicus) allergens in comparison with those of black tiger prawn (Penaeus monodon) by testing reactivity with shellfish-allergic subjects' serum IgE. Cooked extracts of both species showed markedly increased IgE reactivity by ELISA and immunoblotting, and clinical relevance of IgE reactivity was confirmed by basophil activation tests. Inhibition IgE ELISA and immunoblotting demonstrated cross-reactivity between the crab and prawn extracts, predominantly due to tropomyosin, but crab-specific IgE-reactivity was also observed. The major blue swimmer crab allergen tropomyosin, Por p 1, was cloned and sequenced, showing strong homology with tropomyosin of other crustacean species but also sequence variation within known and predicted linear IgE epitopes. These findings will advance more reliable diagnosis and management of potentially severe food allergy due to crustaceans.

Varese, Nirupama; Zubrinich, Celia; Lopata, Andreas L.; O'Hehir, Robyn E.; Rolland, Jennifer M.

2013-01-01

76

Informe Anual a la Nación indica una reducción en los índices de incidencia y mortalidad por cáncer; una sección especial revela amplias variaciones en las tendencias del cáncer de pulmón en los estados  

Cancer.gov

Un nuevo informe de las principales organizaciones oncológicas del país muestra que, por primera vez desde la primera publicación del informe en 1998, tanto el índice de incidencia como el de mortalidad para todos los cánceres combinados están disminuyendo en hombres y mujeres.

77

LA SUBASTA DE ACTIVOS FINANCIEROS COMO ESTRATEGIA PARA LA REDUCCIÓN DEL COSTO DE RESCATES BANCARIOS ORIGINADOS POR LAS CRISIS FINANCIERAS AUCTION OF FINANCIAL ASSETS AS A STRATEGY TO REDUCE THE COST OF BANK PURCHASE CAUSED BY THE FINANCIAL CRISIS  

Microsoft Academic Search

Resumen Desde los años setenta y hasta la fecha muchos países han experimentado crisis bancarias. Estos fenómenos, que han sido ocasionados por un conjunto de factores macro y microeconómicos, tanto internos como externos, se han dado tanto en países desarrollados como en países en vías de desarrollo, demostrado la fragilidad del sistema financiero ante el crecimiento explosivo del volumen de

Mónica Isabel; López Cardoza

78

A UV-vis study of the effects of alcohols on formation and stability of Mn(por)(O)(OAc) complexes  

NASA Astrophysics Data System (ADS)

Interactions of three different (acetato) (tetraarylporphyrinato) manganese (III) MnIII(por) with tetra-n-butylammonium hydrogen monopersulfate (n-Bu4NHSO5), in the presence of excess tetra-n-butylammonium acetate (n-Bu4NOAc) and in the absence or presence of various alcohols (alcohols = CH3OH, C2H5OH, i-C3H7OH, t-C4H9OH) in CH2Cl2, were monitored by their UV-vis spectral changes, under identical conditions, at room temperature. (Acetato) (tetrakispentafluorophenylporphyrinato) manganese (III) MnIII(tpfpp)(OAc) and (acetato) (tetramesitylporphyrinato) manganese (III) MnIII(tmp)(OAc) produced their corresponding high valent Mn(tpfpp)(O)(OAc) and Mn(tmp)(O)(OAc) both in the absence or presence of alcohols. Whereas, (acetato) (tetraphenylporphyrinato) manganese (III) MnIII(tpp)(OAc) only generated Mn(tpp)(O)(OAc) in the presence of less bulky alcohols. In the absence of alcohols or in the presence of t-C4H9OH, the UV-vis spectra displayed a very weak sign of formation of Mn(tpp)(O)(OAc) complex. It was observed that alcohols generally increased the rate of formation of Mn-oxo species in accordance with their acidity or hydrogen bonding strength, and enhanced the stability of Mn-oxo complexes, as their size increases. Attempts are made to explain these effects. A mechanistic scheme is also suggested for the decomposition of HSO5- to O2 and HSO4-, through the formation and dimerization of Mn-oxo species.

Mohajer, Daryoush; Jahanbani, Maryam

2012-06-01

79

Impact of the CYP3A5, CYP3A4, COMT, IL-10 and POR Genetic Polymorphisms on Tacrolimus Metabolism in Chinese Renal Transplant Recipients  

PubMed Central

Tacrolimus is a widely used immunosuppressive drug for preventing the rejection of solid organ transplants. The efficacy of tacrolimus shows considerable variability, which might be related to genetic variation among recipients. We conducted a retrospective study of 240 Chinese renal transplant recipients receiving tacrolimus as immunosuppressive drug. The retrospective data of all patients were collected for 40 days after transplantation. Seventeen SNPs of CYP3A5, CYP3A4, COMT, IL-10 and POR were identified by the SNaPshot assay. Tacrolimus blood concentrations were obtained on days 1–3, days 6–8 and days 12–14 after transplantation, as well as during the period of the predefined therapeutic concentration range. Kruskal–Wallis test was used to examine the effect of genetic variation on the tacrolimus concentration/dose ratio (C0/D) at different time points. Chi-square test was used to compare the proportions of patients who achieved the target C0 range in the different genotypic groups at weeks 1, 2, 3 and 4 after transplantation. After correction for multiple testing, there was a significant association of C0/D with CYP3A5*3, CYP3A4*1G and CYP3A4 rs4646437 T>C at different time points after transplantation. The proportion of patients in the IL-10 rs1800871-TT group who achieved the target C0 range was greater (p?=?0.004) compared to the IL-10 rs1800871-CT and IL-10 rs1800871-CC groups at week 3 after transplantation. CYP3A5*3, CYP3A4 *1G, CYP3A4 rs4646437 T>C and IL-10 rs1800871 C>T might be potential polymorphisms affecting the interindividual variability in tacrolimus metabolism among Chinese renal transplant recipients.

Lin, Li; Jiang, Hai-Xia; Zhong, Ze-Yan; Li, Wei-Mo; Zhang, Yan-Jun; Zheng, Ping; Tan, Xu-Hui; Zhou, Lin

2014-01-01

80

Impact of the CYP3A5, CYP3A4, COMT, IL-10 and POR genetic polymorphisms on tacrolimus metabolism in Chinese renal transplant recipients.  

PubMed

Tacrolimus is a widely used immunosuppressive drug for preventing the rejection of solid organ transplants. The efficacy of tacrolimus shows considerable variability, which might be related to genetic variation among recipients. We conducted a retrospective study of 240 Chinese renal transplant recipients receiving tacrolimus as immunosuppressive drug. The retrospective data of all patients were collected for 40 days after transplantation. Seventeen SNPs of CYP3A5, CYP3A4, COMT, IL-10 and POR were identified by the SNaPshot assay. Tacrolimus blood concentrations were obtained on days 1-3, days 6-8 and days 12-14 after transplantation, as well as during the period of the predefined therapeutic concentration range. Kruskal-Wallis test was used to examine the effect of genetic variation on the tacrolimus concentration/dose ratio (C 0/D) at different time points. Chi-square test was used to compare the proportions of patients who achieved the target C 0 range in the different genotypic groups at weeks 1, 2, 3 and 4 after transplantation. After correction for multiple testing, there was a significant association of C 0/D with CYP3A5*3, CYP3A4*1G and CYP3A4 rs4646437 T>C at different time points after transplantation. The proportion of patients in the IL-10 rs1800871-TT group who achieved the target C 0 range was greater (p?=?0.004) compared to the IL-10 rs1800871-CT and IL-10 rs1800871-CC groups at week 3 after transplantation. CYP3A5*3, CYP3A4 *1G, CYP3A4 rs4646437 T>C and IL-10 rs1800871 C>T might be potential polymorphisms affecting the interindividual variability in tacrolimus metabolism among Chinese renal transplant recipients. PMID:24465960

Li, Chuan-Jiang; Li, Liang; Lin, Li; Jiang, Hai-Xia; Zhong, Ze-Yan; Li, Wei-Mo; Zhang, Yan-Jun; Zheng, Ping; Tan, Xu-Hui; Zhou, Lin

2014-01-01

81

La inserci?n en el mercado laboral de los inmigrantes latinos en Espa?a y en los Estados Unidos: Diferencias por pa?s de origen y estatus legal  

PubMed Central

Resumen Este artículo compara los resultados económicos entre los inmigrantes latinoamericanos en España y Estados Unidos. Detectamos un efecto de selección por el que la mayoría de los inmigrantes latinoamericanos en España proceden de Sudamérica de un entorno de clases medias, mientras la mayoría de los inmigrantes que van a los Estados Unidos son centroamericanos de clase baja. Este efecto de selección explica las diferencias transnacionales en la probabilidad de empleo, logro ocupacional y salarios obtenidos. A pesar de las diferencias en los orígenes y las características de los latinoamericanos en ambos países, los factores demográficos, humanos y de capital social parecen operar de forma similar en ambos países; y cuando los modelos se estiman separadamente por estatus legal, descubrimos que los efectos se acentúan más entre los inmigrantes irregulares cuando se los compara con los regulares, especialmente en Estados Unidos.

Connor, Phillip; Massey, Douglas

2013-01-01

82

Long-term RNA persistence of Porcine rubulavirus (PorPV-LPMV) after an outbreak of a natural infection: The detection of viral mRNA in sentinel pigs suggests viral transmission.  

PubMed

The persistence of porcine rubulavirus (PorPV-LPMV) in five pigs that had survived an outbreak of a natural infection was determined. After the resolution of the outbreak, each animal was housed in an isolation pen together with one sentinel pig. Approximately every 2 months thereafter one group of animals was euthanized and tissue samples taken for virological and serological analysis. Infectious virus was not isolated from any samples; antibodies to PorPV-LPMV were detected in convalescent pigs by virus neutralisation test and blocking ELISA but not in sentinel pigs. PorPV-LPMV mRNA of the nucleoprotein (NP) and phosphoprotein (P) genes was detected by a nested polymerase chain reaction (nPCR) in samples of trigeminal and optic nerves, cervical spinal cord, tonsils, salivary gland, lung and pancreas from convalescent pigs. mRNA was also detected in the midbrain, corpus callosum, or olfactory bulb in four out of five pigs by nRT-PCR, this result was confirmed by the sequencing of a 260bp PCR product of P gene region. The highest average viral copies/?g of total RNA occurred in the olfactory bulb and pancreas tissues of convalescent pigs and midbrain, tonsil and pancreas of sentinel pigs housed with the convalescent pigs. Satellitosis and gliosis of the midbrain, olfactory bulb, corpus callosum, medulla oblongata or choroid plexus were microscopically observed in four convalescent pigs. The control pig remained negative in all tests. The results indicate that PorPV-LPMV mRNA persists and induces a durable humoral immune response in pigs that have recovered from a natural infection. After a possible reactivation of the virus, it was transmitted to sentinel pigs in contact with the convalescent pigs. PMID:24768705

Cuevas-Romero, S; Hernández-Baumgarten, E; Kennedy, S; Hernández-Jáuregui, P; Berg, M; Moreno-López, J

2014-08-01

83

Molecular detection and confirmation of Neisseria gonorrhoeae in urogenital and extragenital specimens using the Abbott CT/NG RealTime assay and an in-house assay targeting the porA pseudogene.  

PubMed

Culture for detection of Neisseria gonorrhoeae (NG) is being replaced by molecular assays, but difficulties are observed with false positive and negatives results, especially for extragenital samples. This study evaluates the Abbott CT/NG Real-Time assay and a real-time porA pseudogene assay. Samples (n = 600) from a mixed prevalence Irish population include 164 male urines with corresponding urethral swabs, 58 endocervical swabs, 173 male pharyngeal swabs, 205 male rectal swabs, 36 NG clinical isolates and 26 commensal Neisseria species isolates. There was a 100% concordance between the Abbott CT/NG Real-Time and the porA assay. The positivity rate was 1.2%, 1.7%, 8.1% and 5.8% for FVU/urethral swabs, endocervical, pharyngeal and rectal swabs, respectively. These results were compared to culture and discrepancies were found with nine pharyngeal and three rectal swabs. Seven of the 12 discrepant positive samples were sequenced and were confirmed "true positives". The sensitivity and specificity of the molecular assays was 100%. The sensitivity of the culture-based testing was 100% for urogenital samples but 36% and 75% for pharyngeal and rectal swabs, respectively. The combined Abbott CT/NG and porA assays provide a valuable alternative to culture and also generate a significant increase in the diagnosis of pharyngeal and rectal NG infection. PMID:21170565

Walsh, A; Rourke, F O; Crowley, B

2011-04-01

84

Informe a la nación indica que continúa la disminución de las tasas de mortalidad por cáncer que empezó a principios de los noventa; Una sección especial destaca los cánceres asociados al exceso de peso y a la falta de actividad física adecuada  

Cancer.gov

Los índices de mortalidad por todos los cánceres combinados para hombres, mujeres y niños siguieron bajando en Estados Unidos entre 2004 y 2008, según el Informe Anual a la Nación sobre el Estado del Cáncer de 1975 a 2008. El índice general de diagnósticos nuevos de cáncer, que se conoce también como incidencia, bajaron entre los hombres un promedio de 0,6% por año entre 2004 y 2008. Los índices generales de incidencia de cáncer entre las mujeres bajaron 0,5% por año de 1998 hasta 2006; estos índices se nivelaron de 2006 a 2008.

85

Protection by meningococcal outer membrane protein PorA-specific antibodies and a serogroup B capsular polysaccharide-specific antibody in complement-sufficient and C6-deficient infant rats.  

PubMed

The relative contributions of antibody-induced complement-mediated bacterial lysis and antibody/complement-mediated phagocytosis to host immunity against meningococcal infections are currently unclear. Further, the in vivo effector functions of antibodies may vary depending on their specificity and Fc heavy-chain isotype. In this study, a mouse immunoglobulin G2a (mIgG2a) monoclonal antibody (MN12H2) to meningococcal outer membrane protein PorA (P1.16), its human IgG subclass derivatives (hIgG1 to hIgG4), and an mIgG2a monoclonal antibody (Nmb735) to serogroup B capsular polysaccharide (B-PS) were evaluated for passive protection against meningococcal serogroup B strain 44/76-SL (B:15:P1.7,16) in an infant rat infection model. Complement component C6-deficient (PVG/c-) rats were used to assess the importance of complement-mediated bacterial lysis for protection. The PorA-specific parental mIgG2a and the hIgG1 to hIgG3 derivatives all induced efficient bactericidal activity in vitro in the presence of human or infant rat complement and augmented bacterial clearance in complement-sufficient HsdBrlHan:WIST rats, while the hIgG4 was unable to do so. In C6-deficient PVG/c- rats, lacking complement-mediated bacterial lysis, the augmentation of bacterial clearance by PorA-specific mIgG2a and hIgG1 antibodies was impaired compared to that in the syngeneic complement-sufficient PVG/c+ rat strain. This was in contrast to the case for B-PS-specific mIgG2a, which conferred similar protective activity in both rat strains. These data suggest that while anti-B-PS antibody can provide protection in the infant rats without membrane attack complex formation, the protection afforded by anti-PorA antibody is more dependent on the activation of the whole complement pathway and subsequent bacterial lysis. PMID:16622217

Toropainen, Maija; Saarinen, Leena; Vidarsson, Gestur; Käyhty, Helena

2006-05-01

86

Protection by Meningococcal Outer Membrane Protein PorA-Specific Antibodies and a Serogroup B Capsular Polysaccharide-Specific Antibody in Complement-Sufficient and C6-Deficient Infant Rats  

PubMed Central

The relative contributions of antibody-induced complement-mediated bacterial lysis and antibody/complement-mediated phagocytosis to host immunity against meningococcal infections are currently unclear. Further, the in vivo effector functions of antibodies may vary depending on their specificity and Fc heavy-chain isotype. In this study, a mouse immunoglobulin G2a (mIgG2a) monoclonal antibody (MN12H2) to meningococcal outer membrane protein PorA (P1.16), its human IgG subclass derivatives (hIgG1 to hIgG4), and an mIgG2a monoclonal antibody (Nmb735) to serogroup B capsular polysaccharide (B-PS) were evaluated for passive protection against meningococcal serogroup B strain 44/76-SL (B:15:P1.7,16) in an infant rat infection model. Complement component C6-deficient (PVG/c?) rats were used to assess the importance of complement-mediated bacterial lysis for protection. The PorA-specific parental mIgG2a and the hIgG1 to hIgG3 derivatives all induced efficient bactericidal activity in vitro in the presence of human or infant rat complement and augmented bacterial clearance in complement-sufficient HsdBrlHan:WIST rats, while the hIgG4 was unable to do so. In C6-deficient PVG/c? rats, lacking complement-mediated bacterial lysis, the augmentation of bacterial clearance by PorA-specific mIgG2a and hIgG1 antibodies was impaired compared to that in the syngeneic complement-sufficient PVG/c+ rat strain. This was in contrast to the case for B-PS-specific mIgG2a, which conferred similar protective activity in both rat strains. These data suggest that while anti-B-PS antibody can provide protection in the infant rats without membrane attack complex formation, the protection afforded by anti-PorA antibody is more dependent on the activation of the whole complement pathway and subsequent bacterial lysis.

Toropainen, Maija; Saarinen, Leena; Vidarsson, Gestur; Kayhty, Helena

2006-01-01

87

Infecciones causadas por el género Malassezia  

Microsoft Academic Search

Summary The yeast from the gender Malassezia sp, previously called Pityrosporum are found as part of the microbiota of the skin and 92 to 100% of them have been isolated from healthy people. The taxonomy of the gender has been controversial since it was named M. furfur. These opportunistic yeasts are related with some human and animal (mamifers) diseases and

R. Arenas

88

Enfermedad pulmonar intersticial por metales duros  

Microsoft Academic Search

Hard metal lung disease is an unusual disease which can occur in individuals exposed to hard metals. Clinically, the condition resembles hypersensitivity pneumonitis depending mainly on individual susceptibility, which eventually progresses to pulmonary fibrosis. We present two patients with pulmonary fibrosis, who were actually diagnosed after an exhaustive anamnesis and examination of the tissue by scanning microscope to discard hard

M. Ángeles Montero; Javier de Gracia; Ferràn Morell

2010-01-01

89

Nuevas voces por la justicia social  

Microsoft Academic Search

New Voices for Social Justice illustrates the discovery by the dalits, the groups most oppressed by the Indian caste system, of writing, particularly poetry, as a weapon in their fight against discrimination. It quotes men and women writing in several of the languages and dialects of India on subjects from extreme poverty and filth to humiliations and exclusions. It refers

Rowena Hill

90

Caracterización por Difracción de Rayos X de un Acero Inoxidable AISI 304 Nitrurado por Plasma  

Microsoft Academic Search

AISI 304 stainless steel samples have been ion nitrided using a DC pulsed plasma under differents conditions of temperature, current density and nitrogen partial pressure of N2-H2. X-Ray Diffraction (XRD) was used for characterization of the nitrided layer, which consists essentially of an expanded austenite structure or \\

S. P. Brühl; N. Mingolo

2005-01-01

91

Alteraciones anatomo-patológicas en un flamenco común (phoenicopterus roseus) por intoxicación aguda por plomo  

Microsoft Academic Search

Pathological alterations in the common flamingo (Phoenicopterus roseus) due to acute lead intoxication. The presence of lead in the environment is an undisputable fact. Furthermore, it is a serious health concern as it affects not only the well-being of animals, but also that of human beings. Plumbism is a type of intoxication that can affect any animal species. In wild

Romero D; Martínez-López E; Navas I; María-Mojica P; Peñalver J; García-Fernández AJ

2007-01-01

92

LESÃO CEREBRAL PENETRANTE POR GRANDE FRAGMENTO DE FIBRA DE AMIANTO TRATADA POR CRANIECTOMIA DESCOMPRESSIVA  

Microsoft Academic Search

We report the case of a 22-year-old man victim of penetrating brain injury due to a 15 x 12 asbestos fragment and a successfully treatment via decompressive craniectomy. Unlike gunshot wounds to the head, penetrating brain injury from low energy objects are unusual. Most cases reported involve cranio- orbitary injuries as well as self inflicted lesions in mentally ill patients.

Gustavo Cardoso de Andrade; Roberto Leal Silveira; Aluízio Augusto; Gilberto Almeida; Fonseca Filho; Nilson Pinheiro Jr

93

Hipertensión arterial pulmonar: un recorrido por el año 2008  

Microsoft Academic Search

There have been spectacular developments in pulmonary arterial hypertension (PAH), both in its treatment and knowledge of its pathogenesis. Several studies have been published throughout 2008 that have contributed to improve these two aspects a little. As regards the pathogenesis, mutations in BMPR2 continue gaining points as fundamental factors in the development of the disease. It has been shown that

Adolfo Baloira

2009-01-01

94

Por qué y cómo hemos de analizar los cálculos urinarios  

Microsoft Academic Search

ContextThere is heterogeneity of criteria on the utility of urinary stone analysis as well as on which is the most suitable methodology. This review presents the analysis of the lithiasis using the morphoconstitutional analysis technique based on the combination of the stereoscopic microscopy (SM) with infrared study (IRS).

S. Gràcia-Garcia; F. Millán-Rodríguez; F. Rousaud-Barón; R. Montañés-Bermúdez; O. Angerri-Feu; F. Sánchez-Martín; H. Villavicencio-Mavrich; A. Oliver-Samper

2011-01-01

95

Presentación atípica de tuberculosis peritoneal: Caso clínico diagnosticado por laparoscopia  

Microsoft Academic Search

The presence of peritoneal tuberculosis has to be clinically sus - pected in all patients with abdominal pain of unknown etiology, particularly when it is accompanied by fever, ascites, and abdomi - nal distension. Access to the abdominal cavity using routine la - paroscopy provides essential information on the diagnosis, from both macroscopic images and biopsy sampling, which will later

J. M. Suárez Grau; C. Rubio Chaves; J. L. García Moreno; J. A. Martín Cartes; M. Socas Macías; J. M. Álamo Martínez; F. López Bernal; H. Cadet Dussort; M. Bustos Jiménez; J. D. Tutosaus Gómez; S. Morales Méndez

2007-01-01

96

CONTAMINAÇÃO AMBIENTAL MOVIDA POR POSTOS RETALHISTA S DE COMBUSTÍVEIS  

Microsoft Academic Search

It know that as in Brazil as in development countri es, the worry with the environmental damages and contamination is result of several fact ors, between this factors, we can point ones caused for leak of underground tanks of automobile's combustible. Most of this accidents are caused for corrosion of the tanks, r epresenting a danger as to the health

João Jerônimo Júnior; Antônio Pasqualetto

97

Angiogénesis pulmonar mediada por adenosina vía CXCL1\\/CXCR2  

Microsoft Academic Search

Abstract Introduction: Chronic lung disease's feature is pathological angiogenesis, a still little understood process in this and other diseases. Recently adenosine, a signaling molecule, and chemokines have been considered regulators of this process. Though, relationship between these factors has

Julio E. Valdivia-Silva; Geraldine K. López-Molina; Juan C. González-Altamirano

98

RIESGO DE TRANSMISION DE INFECCIONES POR VIA TRANSFUSIONAL  

Microsoft Academic Search

The risks of transfusion-transmitted infections. Although each donated unit of blood is tested for evidence of infection by specific agents, there are at least four potential reasons why transmission of these agents may still occur: a) the donor has negative laboratory test results during the early stages of infection, known as the window period, b) the existence of a chronic

JORGELINA L. BLEJER; LUIS A. CARRERAS VESCIO; HORACIO J. SALAMONE; Fundación Favaloro

99

Osteoporosis secundaria y Osteoporosis inducida por glucocorticoides (OIG)  

Microsoft Academic Search

Osteoporosis is a major public health problem in a worldwide and its prevalence is increasing. The secondary osteoporosis can be produced by several pathologies and the drug use. Glucocorticoids are a group of grugs widely used in medical practice due to their unquestionable utility. Glucocor- ticoid-induced osteoporosis (GIOP) is a significant public health issue. Although the pathogenesis of glucocorticoid mediated

Elías Forero Illera

100

Infección oculta por el virus de la hepatitis C  

Microsoft Academic Search

Occult hepatitis C virus (HCV) infection is characterized by the detection of HCV-RNA in liver in the absence of anti-HCV and serum HCV-RNA determined by conventional techniques. The development of a new enzyme immunoassay for the detection of antibodies against a conserved epitope in the HCV core protein, together with the detection of HCV-RNA in peripheral blood mononuclear cells and

Vicente Carreño García; Javier Bartolomé Nebreda; Inmaculada Castillo Aguilar; Juan Antonio Quiroga Estévez

2011-01-01

101

Radiación acústica por superficies planas: aplicación a altavoces  

Microsoft Academic Search

En los sistemas de reproducción sonora es habitual la utilización de altavoces dinámicos. Sin embargo,\\u000aen aplicaciones específicas, puede ser necesaria y\\/o conveniente la utilización de altavoces alternativos con\\u000asuperficies planas como diafragma, como los electrostáticos o los basados en la tecnología NXT© . Estos\\u000aaltavoces generan el campo acústico mediante la vibración de una superficie rectangular. Se puede suponer,

Jesús Alba Fernández; Jaime Ramis Soriano; Víctor Espinosa; Víctor Sánchez

1970-01-01

102

Diagnóstico de linfoma cerebral primario por el oftalmólogo  

Microsoft Academic Search

Case reportA 20-year-old male, HIV positive, with myodesopsias (floaters) in both eyes for two weeks. Fundus examination revealed bilateral papillary oedema with peripapilar flame-shaped haemorrhages. The neuroimaging tests showed a cerebral mass in the left parietal lobe. The biopsy confirmed the diagnosis of lymphoid neoplasm.

M. Castro-Rebollo; E. N. Vleming; P. Drake-Rodríguez; J. Benítez-Herreros; C. Pérez-Rico

2010-01-01

103

Intususcepción de intestino delgado por linfoma a células -T  

Microsoft Academic Search

Female patient FPM, 53 year-old, housewife, born in Amazonas, Peru, resident in Lima since teenager, was admitted at Emergency room due to colicky abdominal pain and abdominal tumour about 8 x 5 x 5 cm, in mesogastric area, mobile and painful. She had vomiting in two opportunities and lost undetermined weight. During surgery we found terminal ileum intussuception into the

Moisés Vértiz; Manuel García; Herbert Yabar

2007-01-01

104

Brote causado por Escherichia coli en Chalco, México  

Microsoft Academic Search

Objective. To identify the etiologic agent responsible for a disease outbreak following an overflow of sewage water in Valle de Chalco, Mexico. Material and Methods. A retrospective cross-sectional study was carried out. Rectal samples were collected from the population of Chalco valley, who suffered from diarrhea and vomiting during a natural disaster that took place on May 31, 2000. The

Iliana Alejandra Cortés-Ortiz; Guadalupe Rodríguez-Angeles; Eustolia Alejandra Moreno-Escobar; Jesús Manuel Tenorio-Lara; Benita Pilar Torres-Mazadiego; Edith Montiel-Vázquez

2002-01-01

105

SINDROME CONFUSIONAL AGUDO POR ABSTINENCIA AGUDA DE NICOTINA  

Microsoft Academic Search

Delirium due to acute nicotine withdrawal. Delirium or acute confusional state among hospitalized patients is a frequent and serious problem. It is characterized by acute onset symptoms, fluctuating course, impaired attention, unorganized thinking, and altered level of conciousness. Delirium, as a manifestation of acute nicotine withdrawal syndrome has been reported in the reviewed literature only in eight cases. We report

MANUEL KLEIN; SILVIO PAYASLIAN; JAVIER GOMEZ; ALEJANDRA PRIGIONI

106

Control de las Enfermedades Transportadas por el Aire  

NSDL National Science Digital Library

The air that you breathe indoors may be dangerous to your health. How can we make indoor environments safer? Apply aerobiological engineering principles to buildings to control the bioaerosols in our indoor environments. Retrofit old buildings or specifically design new buildings to control airborne microbes. Develop regulatory standards for indoor environments. Become educated about sources and transmission routes of airborne pathogens.

Wladyslaw Kowalski (Pennsylvania State UniversityâÂÂs Indoor Environment Center;)

2009-08-19

107

Afectación de la mucosa oral por papulosis linfomatoide  

Microsoft Academic Search

Lymphomatoid papulosis is a cutaneous lymphoma with an indolent clinical behaviour characterized by chronic development of recurrent, self-limited lesions appearing as necrotic papules and with a pathology compatible with T cell lymphoma.Mucosal involvement by lymphomatoid papulosis is very rare but has been reported in the literature. It usually appears as ulcers in patients previously diagnosed of lymphomatoid papulosis. From a

C. Serra-Guillén; C. Requena; A. Alfaro; L. Hueso; O. Sanmartín; B. Llombart; E. Nagore; R. Botella-Estrada; A. Martorell-Calatayud; C. Guillén

2007-01-01

108

Dispersion de Ondas Sonoras Por Una Gota de Liquido  

Microsoft Academic Search

Not Available Bibtex entry for this abstract Preferred format for this abstract (see Preferences) Find Similar Abstracts: Use: Authors Title Return: Query Results Return items starting with number Query Form Database: Astronomy Physics arXiv e-prints

Marcos Moshinsky

1955-01-01

109

Estudo fotomicrográfico das caractErísticas dE supErfíciE dE pontas diamantadas: EfEito do método dE EstErilização por Estufa ou autoclavE. PhOt OmiCROgRaPhiC St Udy Of diamOnd b URS SURfaCe ChaRaCte RiSti CS: effeCt Of the SteRilizatiOn methOd by dR y heat OR aUt OClave  

Microsoft Academic Search

rEsumo Introdução: A limpeza, desinfecção e esterilização dos instrumentos são imprescindíveis para evitar in- fecções cruzadas no consultório odontológico. Visando testar a eficiência das pontas diamantadas, são avaliadas, por meio de fotomicrografias, as alterações superficiais dessas pontas em função do uso da estufa ou autoclave. Métodos: Para isso, foi realizado um estudo in vitro com 108 terceiros molares humanos e

Lígia Antunes; Regina Helena; Barbosa Tavares da Silva; Ivone Lima Santana; Laiza Maria Grassi Fais; Dalton Geraldo Guaglianoni

110

RESISTENCIA A LA CORROSIÓN DE ACEROS INOXIDABLES AUSTENITICOS CON ALTO CONTENIDO DE NITROGENO RECUBIERTOS CON HIDROXIAPATITA POR ASPERSIÓN POR PLASMA  

Microsoft Academic Search

In this study was evaluated the corrosion resistance of nitrogen austenitic stainless steel, ASTM-F1586 and Böhler-P558, plasma-sprayed hydroxyapatite coating. The layers were characterized by SEM and DRX. The corrosion resistance was evaluated using tests of potential open circuit and cyclical polarization in Ringer solution to 37°C. The layers present lamelar morphology and pores. In the electrochemical tests was observed that

CLAUDIA PATRICIA OSSA; ANDRÉ TSCHIPTSCHIN

111

Identificación de péptidos miméticos al epítopo reconocido por el anticuerpo monoclonal específico por el EGF, CB-EGF1  

Microsoft Academic Search

Identification of peptide mimics of the epitope recognized by CB-EGF1, a monoclonal antibody EGF specific. As part of an integral structure and function study, we characterized the natural epitope on the EGF recognized by the CB-EGF1 monoclonal antibody, by using peptides displayed on the coat protein of filamentous bacteriophages. Data analyzed demonstrated that the CB-EGF1 monoclonal antibody recognizes a conformational

Yaquelin Puchades; Ariana G Ojalvo; Yanet García; Glay Chinea; Haydée Gerónimo; Nelson S Vispo

112

See the World on the Internet: Tips for Parents of Young Readers--and "Surfers" = Vea el mundo por Internet: Ideas por padres de jovenes lectores y exploradores.  

ERIC Educational Resources Information Center

Regardless of whether a parent has Internet access at home, it is essential that parents learn with their children and be aware of where their travels on the Internet are taking them. Many libraries have Internet workshops for parents or children or both. In the excitement of looking at sites, children may not even realize they are reading. Many…

Moss, Jeanette

113

Obtencion de membranas polimericas cationicas por el metodo de injerto por radiacion. (Obtention of cationic polymeric membranes by radiation-induced grafting method).  

National Technical Information Service (NTIS)

Radiation-induced grafting of LDPE with the monomers, acrylic acid and methacrylic acid, has been studied. The grafting was made with several presentations of LDPE (foil, powder and pellets) by direct method using a Co(sup 60) gamma rays. The irradiation ...

H. Marin H E

1994-01-01

114

Fas2ELISA y la técnica de sedimentación rápida modificada por lumbreras en el diagnóstico de la infección por Fasciola hepatica  

Microsoft Academic Search

SUMMARY Human fascioliasis is a growing health problem, with an increasing worldwide incidence of reported cases. Improving its diagnosis through more sensitive and specific techniques is important to clinical practice and to epidemiology, specially to determine new endemic areas. Objective: To evaluate coprological techniques and serological tests for diagnosis of Fasciola hepatica (Fh) infection in humans. Material and methods: The

MACO FLORES Vicente; MARCOS RAYMUNDO Luis; TERASHIMA IWASHITA Angélica; SAMALVIDES CUBA Frine; MIRANDA SÁNCHEZ Elba; ESPINOZA BABILON Jose; GOTUZZO HERENCIA Eduardo

115

Estado nutricional de pacientes infectados por el virus de la inmunodeficiencia humana (VIH)  

Microsoft Academic Search

Objectives: Nutritional assessment in HIV infected patients must be a main objetive in the treatment of this disease. The main objetive of our work was to study the nutritional status with biochemical and anthropo- metrical parameters in a group of HIV infected patients. Material and methods: A total of 119 patients were evaluated. In all patients the next parameters were

D. A. de Luis; P. Bachiller; O. Izaola; J. M. Eiros Bouza; R. Aller

2001-01-01

116

Empleo de blanco de calcoflúor para el estudio de las especies de Malassezia por microscopía directa  

Microsoft Academic Search

The use of calcofluor white for identification of Malassezia species. Fungi of Malassezia genus are known as normal flora in human beings. However, different pathologies due to Malassezia, have been described. Traditionally, early diagnosis was delayed because of the difficulties in culture isolation of these organisms. The aim of this work, is to evaluate the technique of observation microscopy with

L. RAMOS; S. MELLADO; S. RAMADÁN; L. BULACIO; C. LÓPEZ

117

Uso de hábitats modificados por aves dependientes de bosque tropical en la región caribeña de Guatemala  

Microsoft Academic Search

Modified-habitat use by tropical forest-dependent birds in the Caribbean region of Guatemala. As natural areas are reduced into isolated remnants, the importance of secondary habitats for species conser- vation will increase. Consequently, the conservation value of human-modified or created secondary habitats must be determined. in this study, we evaluated the conservation potential of three habitats associated to cattle ranching (riparian

Alexis Cerezo; Chandler S. Robbins; Barbara Dowell

118

Sintomas Depressivos e Qualidade de Vida em Indivíduos com Epilepsia por Esclerose Mesial Temporal  

Microsoft Academic Search

RESUMO Introdução: Dificuldades no trabalho, em relacionamentos interpessoais, familiares e sociais, a percepção do estigma, da discriminação dentre outros têm sido associados aos estados depressivos interictais, influen- ciando negativamente a qualidade de vida (QV) das pessoas com epilepsia. A depressão tem alta prevalência (20 a 55%) nas epilepsias, sendo vista como o fator mais importante no julgamento do paciente sobre

Neide Barreira Alonso; Tatiana Indelicato da Silva; Ana Carolina Westphal; Auro Mauro Azevedo

119

Fermentação da proteína de seis alimentos por microrganismos ruminais, incubados puros ou com monensina ou rumensin®  

Microsoft Academic Search

RESUMO - Avaliaram-se os efeitos da fermentação in vitro de seis alimentos: fubá de milho (FM), farelo de soja (FS), farelo de trigo (FT), sorgo (SO), glúten de milho (GM) e uréia (UR), incubados puros ou com o antibiótico monensina, esse na forma pur a para análise (Monensina) ou comercial (Rumensin®). O experimento constituiu-se de 18 unidades experimentais (três alimentos

Natália Guarino Souza Barbosa; Rogério de Paula Lana; Antônio Bento Mâncio; Arnaldo Chaer Borges; Cesar de Queiroz; Juliana Silva Oliveira

2001-01-01

120

Perdas de nitrogênio de dejeto líquido de suínos por volatilização de amônia  

Microsoft Academic Search

Ammônia volatilization is one of the main mechanisms of soil nitrogen loss, especially associated with application of pig slurry on soil surface. The objectives of this study were to determine the ammonia volatilization after soil application of pig slurry in soil surface, at different times of the year and hour of application. The pig slurry was spread over the soil

Claudir José Basso; Carlos Alberto Ceretta; Paulo Sérgio Pavinato; Márcio José da Silveira

2004-01-01

121

Radioprotecao por dimetilsulfoxido em dois sistemas biologicos. (Radioprotection by dimethyl sulfoxide on two biological systems).  

National Technical Information Service (NTIS)

The effects of dimethyl sulfoxide treatment on two biological systems are examined: (a) In vivo, the level of albinic mouse survive from IPEN, when irradiated with 9 Gy of (sup 60)Co., 1 hour after the injection ip of DMSO 0,025M. (b) In vivo, molecular l...

D. M. L. Bernardes A. L. C. Villavicencio N. L. Del Mastro

1990-01-01

122

Factores de riesgo y secuelas reproductivas asociados a la infección por Chlamydia trachomatis en mujeres infértiles  

Microsoft Academic Search

Objective. To assess the clinical and sexual lifestyle charac- teristics associated with Chlamydia trachomatis infection among women diagnosed with infertility. Material and Me- thods. Study subjects were women with an infertility diag- nosis attending the infertility clinic at the National Institute of Perinatology. Endocervical specimens from 309 women were examined for Chlamydia trachomatis using the direct immunofluorescence method. Vaginal culture

Fernando Guerra-Infante; Saúl Flores-Medina; Gabriel Arteaga-Troncoso; Angélica Zamora-Ruiz; Marcela López-Hurtado; Federico Javier Ortiz-Ibarra

2003-01-01

123

Microscopia de varredura por sonda (SPM) aplicada a aços inoxidáveis dúplex  

Microsoft Academic Search

In this work, Scanning Probe Microscopy (SPM), in the contact (Atomic Force Microscopy ­ AFM) and magnetic force (Magnetic Force Microscopy ­ MFM) modes, has been used to analyze the microstructure of a solution­treated and aged 2205 duplex stainless steel. A surface analysis of the solution­treated steel has been performed by AFM after passive film growth. By AFM three­ dimensional

Fabricio Simão dos Santos; S. E. Kuri; S. M. Gheno

2007-01-01

124

Bacteriosis en Cilantro (Coriandrum sativum L.) Causada por Xanthomonas campestris (Pammel) Dowson en Venezuela  

Microsoft Academic Search

In coriander (Coriandrum sativum) plants from commercial fields in the area of San Vicente, Aragua state, Venezuela, water-soaked, dark-brown angular spots were observed on leaf surface and distributed along the veins; as symptoms progressed, they caused leaf blight. Isolates obtained from diseased tissue on nutrient agar persistently produced light yellow colonies. Pathogenicity tests were performed by spray inoculation of a

Yolanda Guevara; Anna Maselli

125

Mujeres felices por ser saludables: a breast cancer risk reduction program for Latino women  

Microsoft Academic Search

BackgroundBreast cancer is the most commonly diagnosed cancer and the most common cause of cancer mortality among Latino women. Several behavioral factors such as early detection and dietary practices could help decrease morbidity and mortality associated with breast cancer in this population. Unfortunately, there are few data regarding the efficacy of health-related interventions for young Latino women.

Marian L Fitzgibbon; Susan M Gapstur; Sara J Knight

2003-01-01

126

Determinación de la densidad de la fibra poliester por el método de columna gradiente de densidades  

Microsoft Academic Search

En la industria se presentan a veces problemas en las tinturas de fibras de poliester que son difíciles de resolver y producen lamentables pérdidas de tiempo. La causa de ello es, en algunos casos, la estructura cristalina de las fibras. Estas, cuando están excesivamente cristalizadas hacen que sea más lenta la difusión de los colorantes, y al mismo tiempo disminuye

Publio Puente Garrido

1970-01-01

127

COORDINACIÓN DE LA CADENA DE SUMINISTRO CON RETORNOS COMERCIALES: EL CONTRATO DE CREDITO POR RETORNOS  

Microsoft Academic Search

We investigate the effect that commercial returns have in the coordination of the supply chain and in the optimal decision variables in a two-echelon supply chain with stochastic demand in a single period. Logistics costs related to commercial returns may be incurred at both retailer and manufacturer sites. In many practical settings, the manufacturer faces the larger share. In others,

R. Ruiz; A. Muriel

128

LA UNIVERSIDAD BRASILEÑA EN UN CONTEXTO DE CAMBIOS IMPUESTOS POR LA GLOBALIZACIÓN  

Microsoft Academic Search

This work is to analyze the university's mission, in a context of changes imposed by globalization and tech- nological innovations. During the decade of 30, with the Universidade do Brasil, in Rio de Janeiro and the Universidade de São Paulo The Brazilian university appears. It is approximately 80 years old, it's histo- rical period is short compared to that of

MARTHA ABRAHÃO; SAAD LUCCHESI

2006-01-01

129

Doença pulmonar obstrutiva crônica e desnutrição: por que não estamos vencendo a batalha?  

Microsoft Academic Search

1 (TE SBPT) Objetivos: Fazer uma revisão dos mecanismos envolvidos na gênese da desnutrição em pacientes com doença pulmonar obstrutiva crônica (DPOC) e revisão sistemática dos artigos randomizados e controlados para esclarecer a contribuição de suplementação nutricional em pacientes com DPOC estável. Método: Revisão sistemática de artigos publicados na área de nutrição em todas as línguas, de várias fontes, incluindo

IVONE MARTINS FERREIRA

2003-01-01

130

La infección por virus del papiloma humano, una amenaza real para las adolescentes  

Microsoft Academic Search

We performed a study on cervical pathology in adolescents in the Clodomira Acosta Ferrales Obstetrics and Gynecology Hospital between January 2006 and May 2007, in which 340 sexually active adolescents were evaluated.Of these, 192 had colposcopic criteria compatible with subclinical lesions produced by HPV infection and underwent colposcopically-guided punch biopsy. A histological diagnosis of HPV was made in 117 adolescents,

Margarita Solares; Omayda Safora Enríquez; Aldo Rodríguez Izquierdo

2009-01-01

131

Deposição de filmes de ZEI 8% em mol por sistema de spray pirólise modificado  

Microsoft Academic Search

In this work zirconia stabilized with itria films 8 mol% (8YSZ) had been produced, applied as electrolytes for solid oxide fuel cell (SOFC), deposited in quartz substrate spray-pyrolysis technique and treated at 1000ºC. For attainment of films a system deposition for spray-pyrolysis modified according to patent deposited in INPI was used, that if compared with traditional system where atomized is

C. H. M. Rodrigues; M. Toniato; H. R. Paes Jr

2008-01-01

132

SELETIVIDADE E CONTROLE POR MISTURAS DE HERBICIDAS EM ALGODOEIRO HERBÁCEO1  

Microsoft Academic Search

RESUMO: Utilizam-se misturas de herbicidas para evitar a resistência de plantas daninhas a herbicidas e obter melhor eficiência de controle das plantas daninhas. Conduziu-se, no Campo Experimental da Embrapa Algodão, Barbalha, CE, experimento objetivando avaliar o efeito de misturas duplas, triplas e quádruplas de herbicidas, envolvendo Diuron, pendimethalin, metolachlor e oxadiazon, aplicadas em pré-emergência, no controle de plantas daninhas em

ANTONIA ELIENE DUARTE; JOSÉ RODRIGUES PEREIRA; JOÃO BOSCO PITOMBEIRA; MARIA ARLENE PESSOA DA SILVA; FANUEL PEREIRA DA SILVA

133

Evendencia empírica de la eficiencia del mercado de tipos de cambio por adelantado en México  

Microsoft Academic Search

This paper analyzes the short term exchange rate coverage market in Mexico. The results demonstrate inefficiencies in this market due to the fact that the implicit forward exchange rate violates the Unbiased Eficiency Hypotesis (UEH). Nonstationarity and co integration are considered in the context of time series models, following Engle & Granger (1987) and Johansen & Juselius (1990) methodologies. The

Sergio Omar Garduño Ríos

1996-01-01

134

Prevalencia de úlceras por presión en la Comunidad Autónoma de las Islas Baleares  

Microsoft Academic Search

ObjectiveThe absence of reliable information regarding Pressure Ulcers in the Balearic Islands has led to the development of this study. The main objective was to acquire knowledge of the prevalence in hospitals, nursing homes and patients who have received domiciliary care in the public and semi-private services.

Antonia M. Tomàs-Vidal; María Soledad Hernández-Yeste; M. Dolores García-Raya; Reyes Marín-Fernández; Josefina Cardona-Roselló

2011-01-01

135

Exposicion a Patogenos Transmitidos por la Sangre en el Trabajo. (Occupational Exposure to Bloodborne Pathogens.)  

National Technical Information Service (NTIS)

There are approximately 5.6 million workers in health care and other facilities who are at risk of exposure to bloodborne pathogens such as the human immunodeficiency virus (HIV) and the hepatitis B virus (HBV) and other potentially infectious materials. ...

1992-01-01

136

DOSES, EFICIÊNCIA E USO DE NITROGÊNIO POR SEIS CULTIVARES DE MILHO  

Microsoft Academic Search

Corn needs high amount of nitrogen and this element in soil shows fluctuation due to humidity degree. In addition, cultivars show different performance to N supply. This work aimed to study nitrogen doses, use and efficiency in six corn cultivars, cropped in a cerrado soil vegetation area, Selviria-MS, in a clayey, hipodistrophyc, alic, red latosol (Haplustox). The plots were constituted

FLÁVIA CARVALHO; SILVA FERNANDES; SALATIÉR BUZETTI; ORIVALDO ARF; ANTONIO DA COSTA ANDRADE JOÃO

137

Infección vaginal por tricomonas (e infecciones mixtas) y atipias celulares, en la citología cervicovaginal  

Microsoft Academic Search

ObjectiveWe present a series of 380 cytologies with a diagnosis of vaginal infection due to Trichomonas vaginalis, representing 0.31% of 121,688 cytologies in a 10-year period (2000-2009). We compared these cytologies with a control group of 535 cytologies.

J. López-Olmos; J. Gasull

2011-01-01

138

CLONAGEM DO JAMBEIRO-ROSA (Syzygium malacensis) POR ESTAQUIA DE RAMOS ENFOLHADOS  

Microsoft Academic Search

The exotic Syzygium malacensis is a potential alternative for fruit growers due to its fruits characteristics. Using apical and sub apical leaved cuttings, this paper intended to study their vegetative propagation and the IBA influence over them for there are many seedless clones and genetic segregation. The work has been done in the experimental area of fruit growing of Faculdade

ANTONIO BALDO GERALDO MARTINS; FABIANA ANDRÉIA GRACIANO; ANA VERUSKA CRUZ DA SILVA

2001-01-01

139

DETECCIÓN DE PRODUCTOS DE MAIZ GENETICAMENTE MODIFICADOS POR LA REACCIÓN EN CADENA DE LA POLIMERASA  

Microsoft Academic Search

A polymerase chain reaction (PCR) was applied to detect genetically modified (GM) maize and soybean food product, using specific 35S promoter primers for inserted chimerical genes in maize or soybean. The PCR detected food products that include ingredients obtained from GMOs in maize grains and flour, as well as processed in foods such as tortillas (Mexican crepe), corn chips, corn

A. Mendoza; S. Fernández; M. A. Cruz; M. A. Rodríguez-Perez; Barrera Saldaña; Elias Piña

2006-01-01

140

Obtencion de titanio metalico por electrolisis de sales fundidas. (Titanium metal obtention by fused salts electrolysis).  

National Technical Information Service (NTIS)

Potassium fluorotitanate dissolved in fused sodium chloride or potassium chloride may be electrolyzed under an inert gas atmosphere. Solid electrolysis products are formed on the cathode which contains titanium metal, sodium chloride, lower fluorotitanate...

P. M. Perillo O. Ares J. Botbol

1989-01-01

141

Incorporating the viewer's point of regard (POR) in gaze-contingent virtual environments  

NASA Astrophysics Data System (ADS)

Awareness of the viewer's gaze position in a virtual environment can lead to significant savings in scene processing if fine detail information is presented `just in time' only at locations corresponding to the participant's gaze, i.e., in a gaze-contingent manner. This paper describes the evolution of a gaze-contingent video display system, `gcv'. Gcv is a multithreaded, real-time program which displays digital video and simultaneously tracks a subject's eye movements. Treating the eye tracker as an ordinary positional sensor, gcv's architecture shares many similarities with contemporary virtual environment system designs. Performance of the present system is evaluated in terms of (1) eye tracker sampling latency and video transfer rates, and (2) measured eye tracker accuracy and slippage. The programming strategies developed for incorporating the viewer's point-of-regard are independent of proprietary eye tracking equipment and are applicable to general gaze- contingent virtual environment designs.

Duchowski, Andrew T.

1998-04-01

142

Determinacion de compuestos carbonilicos en aire por HPLC. (Determination of carbonyl compounds in air by HPLC).  

National Technical Information Service (NTIS)

A method for the determination of seven carbonyl compounds in air is presented. The procedure involve sampling of air by a Sep-Pak cartridge impregnated with 2,4-dinitrophenylhydrazine. Elution was done with 3 mL of acetonitrile and the eluate was diluted...

S. Garcia R. M. Perez A. Campos D. Gonzalez

1995-01-01

143

Especies de vertebrados invasores en Chile y su control y monitoreo por agencias gubernamentales  

Microsoft Academic Search

We provide an overview of the current status of vertebrate invasive species throughout Chile, updating information on terrestrial exotics and reporting for the first time the situation of exotic freshwater fishes. In addition, we document the legislation and programs that the Chilean government has implemented to limit the entry of exotics to the country or minimize their impact on native

J. AGUSTÍN IRIARTE; GABRIEL A. LOBOS; FABIÁN M. JAKSIC

144

IMPACTO Y DETECCIÓN DE NIÑOS CON TRASTORNO POR DÉFICIT DE ATENCIÓN CON HIPERACTIVIDAD  

Microsoft Academic Search

The Attention Deficit Hyperactivity Disorder (ADHD) is a neurologic-based polygenetic disorder affecting some 3-6% of school-age children. Both its chronic character and its basic symptomathology (the attention deficit and the binomial hyperactivity-impulsiveness) have a large influence upon behaviour, academic performance and social relationships, which might lead to the development of associated disorders such as the Oppositional Defiant Disorder, the Conduct

Isabel Orjales Villar

145

Estimaciones de la prevalencia del trastorno por déficit de atención-hiperactividad en niños marabinos  

Microsoft Academic Search

Summary. Aims. This study reports the findings of research aimed at determining the rate of prevalence of attention deficit hyperactivity disorder (ADHD) in children of school age. Subjects and methods. The epidemiological study was conducted using a community sample extracted by means of multi-stage stratified sampling according to socio-economic level and schooling and consisted in 1,141 children of both sexes

M. López; D. Pirela; J. J. Cardozo

146

Diagnóstico y tratamiento farmacológico del trastorno por déficit de atención e hiperactividad  

Microsoft Academic Search

. Se asocia con retraso y dificultades del funcionamiento académico y social 2 , y hay evidencia creciente que indica que también se asocia con morbilidad significativa y peor funcionamiento en la edad adulta 3,4 . Además, estudios longitudinales recientes señalan que los niños con TDAH de ambos sexos y de cual- quier edad generan un gasto médico total y

César Soutullo Esperón

2003-01-01

147

EFECTO DEL USO DE ALCOHOL EN GEL SOBRE LAS INFECCIONES NOSOCOMIALES POR Klebsiella pneumoniae MULTIRRESISTENTE  

Microsoft Academic Search

Effect of alcohol-gel hand hygiene on nosocomial infections due to multi-resistant Klebsiella pneumoniae. Handwashing is considered the most important and effective infection control measure to prevent transmission of nosocomial pathogens. However, compliance with handwashing by health care workers is low. A new modality for hand hygiene is alcohol gel rub, which reduces time required, does not damage the skin and

JOAQUIN BERMEJO; ARNOLDO WERTZ; BLANCA BENCOMO; PATRICIA LESNABERES; RODOLFO NOTARIO

148

REACH: una reforma ambiciosa reducida a una versión light por la industria química  

Microsoft Academic Search

The changes in the market regualtions on chemical products are the legislative development with the highest impact on occupational health since the Framework Directive in 1989. Workers exposure to dangerous chemicals causes more deaths than work accidents, since chemical risks prevention in the working places is cleraly insufficient. One of the cotributing factors is the inadequate regulation on production and

Laurent VOGEL

149

Análisis de cerámicas romanas Terra Sigillata mediante espectroscopía de plasmas inducidos por láser (LIPS)  

Microsoft Academic Search

Laser induced plasma spectroscopy (LIPS) has been applied for the elemental analysis of roman pottery Terra Sigillata from different ceramic production centers. For each sample, representative LIP spectra of slip and body were obtained in addition of compositional depth profiles. In all the cases investigated, calcium and iron are the elements which best define the transition between slip and body

A. J. LóPez; G. NICoLáS; A. RAMIL; A. Yáñez

150

Relevancia y adecuación de la información fiscal suministrada por las cooperativas de segundo grado  

Microsoft Academic Search

Given that the tax information provided by companies in their Annual Accounts is a key factor in providing a reliable image of themselves, it is essential for them to submit this information in accordance with the standards of the General Accounting Plan, as well as providing additional information. This study therefore endeavours to measure the degree to which a sample

Tomás Garrido Pulido; Carmen Lafuente Ibáñez; Raquel Puentes Poyatos

2007-01-01

151

Contenido de metales pesados en hígado y plumas de aves marinas afectadas por el accidente del \\  

Microsoft Academic Search

Resumen: Las aves marinas son organismos situados en la cum- bre de las cadenas alimentarias oceánicas, lo que permite su empleo en programas de biomonitorización para evaluar el efec- to de los más diversos contaminantes sobre estos sensibles eco- sistemas. En el presente trabajo se han analizado las concentra- ciones de distintos metales pesados (Pb, Zn, Cd y Cu) en

Pérez López M; Cid Galán F; Hernández Moreno D; López Beceiro; Fidalgo Álvarez; Soler Rodríguez

2005-01-01

152

Enriquecimento protéico de alimentos por levedura em fermentação semissólida: alternativa na alimentação animal  

Microsoft Academic Search

4 Engenheiro Agrônomo, MSc. Forragicultura Resumo - Os freqüentes aumentos nos preços de suplementos vegetais utilizados na alimentação animal têm despertado grande interesse pelo aproveitamento dos alimentos \\

Salvino Oliveira Júnior

153

Relação entre mercado de terras, crescimento econômico e insegurança fundiária explicada por um modelo a \\  

Microsoft Academic Search

Relationship between the land market, economic growth and land insecurity explained by an overlapping model. In this paper, we analyze the relationship bet- ween the land market failures and the economic growth in Brazil, starting from an overlapping model including two sectors: agricultural and industrial. The land is both a specific factor for agriculture and an asset that can be

Claudio Araujo; Catherine Araujo Bonjean; Jean-Louis Combes; Pascale Combes Motel

2006-01-01

154

Modelagem matemática das rotas metabólicas de produção de hidrogênio por microalgas  

Microsoft Academic Search

In the present work are described the metabolic pathway for the process of hydrogen production under anaerobic conditions and in sulphur deprivation in the culture medium. The described metabolic pathway had been modeled mathematically using S-system as base in the formularization of the equations. The results of the model of the process, had given a transient generation of oxygen in

Orlando Jorquera; Emerson A. Salesb; Maria Ghirardi; Asher Kiperstok; Marcelo Embiruçue

155

Editor Musical: uma Aplicação para a Aprendizagem de Música apoiada por Meios Eletrônicos Interativos  

Microsoft Academic Search

This paper describes the Editor Musical, a collaborative interactive tool developed to support Musical Education, enabling activities of music composition for beginners, individually or collaboratively, on a local network or remotely, on presencial or long distance learning environments. This interdisciplinary research required studies in different areas: computer supported collaborative learning, distance education, music education software and teaching music with music

Irene Karaguilla Ficheman; Ricardo Augusto Lipas; Susana Ester Krüger; Roseli de Deus Lopes

2003-01-01

156

Restricoes em Atividades de Monitoramento por Sensoriamento Remoto (Restrictions in Activity Monitoring through Remote Sensing).  

National Technical Information Service (NTIS)

From the cloud cover statistics for a specified area, the local solar time and field of view, a simplified formulation is suggested for the probability of success in obtaining useful images about dynamic themes that present distinct phases in certain peri...

J. A. Mauricio T. Krug

1986-01-01

157

Impurezas em solucoes radioativas por espectrometria gama. (Impurities in radioactive solutions for gamma spectroscopy).  

National Technical Information Service (NTIS)

The absolute and relative methods for radioactive sources calibration, like 4 (Pi)(beta)-(gamma) and 4(Pi)(gamma) ionization chamber respectively, allows to reach 0,1% of exactiness in activity measurement, but cannot distinguish radioactive impurities th...

J. U. Delgado

1990-01-01

158

Desenvolvimento de Interface com Usuário Dirigida por Modelos com Geração Automática de Código  

Microsoft Academic Search

Resumo. Este trabalho aplica técnicas de MDA ( Model Driven Architecture ) para gerar código a partir de modelos UML. Foi proposto um método, MDGI (Método de Desenvolvimento e Geração de Interfaces), que permite gerar modelos e código de padrões ( patterns ) recorrentes em sistemas. Esses padrões são gerados a partir de um modelo de domínio da aplicação. Neste

Lucas Issa; Clarindo Isaías P. S. Pádua; Rodolfo F. Resende; Stenio Viveiros; Pedro de Alcântara dos Santos Neto

2007-01-01

159

Barras de acero galvanizado: Una opción contra la corrosión inducida por la carbonatación  

Microsoft Academic Search

Concrete carbonation is the second cause of corrosion in reinforced concrete structures, and in inland tropical environments, it would be the main corrosion mechanism. Once concrete is carbonated, plain rebars are known to corrode actively. The objective of this investigation was to study the performance of galvanized reinforcing steel as an alternative reinforcing material under those circumstances. Three different water\\/cement

Eric I. Moreno; Daniel Serrano Ixtepan; Enrique Cob Sarabia

2005-01-01

160

Prospects por practical use of squeezed light and back action evasion  

NASA Astrophysics Data System (ADS)

The most powerful method to date of reducing quantum noise-Kimble's cavity parametric deamplifier-eliminates 95% of this noise but requires a full optical table of sophisticated equipment. The questions remains whether such methods can be made useful. In some very difficult and esoteric experiments, such as gravity wave detection, even quite laborious techniques may make the overall experiment only marginally more difficult. In other types of measurement, such as infrared spectroscopy and optical data storage and retrieval, much simpler and more flexible devices with similar power will be required.

Levenson, M. D.; Shelby, R. M.

1989-10-01

161

Producción de Nuez en Nogales (Carya illinoensis (Wangenh.) K. Koch) Atacados por Phymatotrichopsis omnivora (Duggar) Hennebert  

Microsoft Academic Search

Nut production was compared in healthy and diseased pecan trees with cotton root rot (Phymatotrichopsis omnivora), established under different management and soil conditions. Healthy and diseased pecan trees with different severity were selected from orchards la Barranca, Florida, and Florencia, to evaluate nut production during three years for the first orchard, and for four years in the other two. Significant

José Alfredo Samaniego-Gaxiola; Teodoro Herrera-Pérez

162

A notificação da violência intrafamiliar contra crianças e adolescentes por profissionais de saúde  

Microsoft Academic Search

Reporting family violence against children has two main benefits: it protects the child from the violence and improves epidemiological control of violence. Health professionals play an important role in this area, since they are required to report any known or even suspected case of violence. Nevertheless, when and how to report has been questioned recently. This paper discusses the problems

Hebe Signorini Gonçalves; Ana Lúcia Ferreira

2002-01-01

163

A notação escrita na resolução de problemas por crianças pré-escolares  

Microsoft Academic Search

ABSTRACT - This study analyses how ,children from 4 to 6 years use written notation in subtraction ,problem ,solving. Thirty children from kindergarten to first levels were asked to solve ,four problems ,(two of the ,kind change ,and two of comparison), which involved numerical sets greater and smaller than 10. These problems were in a context which intented togive more

Ana Coêlho Vieira Selva; Ana Carolina Perrusi Brandão

2000-01-01

164

Optimización basada en confiabilidad por medio de redes neuronales y algoritmos evolutivos  

Microsoft Academic Search

A diferencia de la optimización usual, la optimización estocástica consiste en una minimización de una\\u000afunción de coste sujeta a condiciones expresadas en forma de probabilidades en lugar de funciones deterministas,\\u000alo que la convierte en un problema mucho más complejo. En esta clase de optimización son comunes\\u000alos problemas donde la función o funciones objetivo y sus condiciones son

J. E. Hurtado; Diego Álvarez

1970-01-01

165

Recubrimientos sol-gel obtenidos por deposición electroforética (EPd) sobre metales  

Microsoft Academic Search

El proceso sol-gel es un método de gran interés para la producción de películas vítreas sobre metales, que actúan como barrera protectora frente a la oxidación y aumentan su resistencia a la corrosión. Se han obtenido recubrimientos inorgánicos e híbridos de distintas composiciones sobre distintos metales usando técnicas como inmersión, centrifugado y pulverización. Aunque estos métodos proporcionan recubrimientos con buenas

B. FERRARI; R. MORENO; A. dURÁN

166

Language and La Academia, If English Works, Por Que Se Emplea Espanol?  

ERIC Educational Resources Information Center

The dynamics of Mexican American nationalism reflected in the publications of the Academia de la Nueva Raza and in a 1971 work by Ricardo Sanchez are examined in this article. The connection between language and ideology is discussed in the context of Chicano nationalist writing. (GC)

Jonz, Jon G.

1978-01-01

167

MIOCARDITIS VIRAL POR HERPES SIMPLE TIPO I: A PROPÓSITO DE UN CASO  

Microsoft Academic Search

SUMMARY: Up to now cases of viral myocarditis have not been described by herpes virus type I in groups eateries outside of the age neonatal. A case of a 2 year-old feminine input the one is reported which enters to the Pediatric Intensive Care Unit of the Hospital the Children\\

Haylet Marin; María Cruces; Ramona Pardo; Angelo Sparano; Luis Maldonado

168

Extracao por solventes de niobio e tantalo. (Solvents Extraction of Niobium and Tantalum).  

National Technical Information Service (NTIS)

The separation process of niobium and tantalum using solvent extraction is evaluated. The use of methyl isobutyl ketone (MIBK) e tributyl phosphate (TBP), and the distribution of two elements between aqueous and organic phases in function of the fluoridri...

P. R. G. Santos O. C. Cunha

1982-01-01

169

Caracterización geoambiental de lugares alterados por minería de carbón en la provincia de León (España)  

Microsoft Academic Search

Some abandoned mine sites will be gradually colonized in a relatively short time, initiating soil development processes, but contrary, in many other sites edaphic problems limit plant establishment a long time. There is a great range of different situations that can be found in areas where mining is finished, from the simple abandonment of pits and spoil tips to areas

J. C. Arranz González

170

Canasate - Mapeamento DA Cana-de-Acucar Por Satelite (Canasate: Sugar Cane Mapping by Satellite).  

National Technical Information Service (NTIS)

The CANASATE Project, sugarcane mapping by satellite, has the objective of obtaining the spatial distribution and area estimation of sugarcane plantations, at national level, using remote sensing techniques. To achieve this objective, Brazil was divided i...

F. J. Mendonca

1986-01-01

171

Fitorremeadição por Brachiaria humidicola de área de disposição de um resíduo perigoso  

Microsoft Academic Search

To evaluate the phytostabilization of a Zn and Cd contaminated industrial residue, it was conducted an experiment with Brachiaria humidicola in a greenhouse, using an alkaline residue (calcium silicate) and an organic residue (sludge from a brewery factory) to reduce the heavy metal solubility in the Ingá residue. The addition of alkaline and organic industrial residues caused a significant reduction

Fabiana Soares dos Santos; Nelson Moura; Amaral Sobrinho; Vinícius Sampaio; Ricardo Bezerra Hoffmann; Nelson Mazur

2005-01-01

172

Un caso de pseudomiasis por larvas de Hermetia illucens (Diptera: Stratiomyidae) en un bovino  

Microsoft Academic Search

SUMMARY. A case of bovine pseudomyiasis caused by Her- metia illucens larvae (Diptera: Stratiomyidae). Introduction. Hermetia illucens is a dipterous which can produce gastroenteric pseudomyasis in humans and domestic animals. The larvae develop in a wide range of animal and vegetable decaying materials and can be accidentally ingested by

Pablo Manrique-Saide; Roger I. Rodríguez-Vivas; Manuel Quiñones Rodríguez

173

Producao d Dijatos por Dupla Troca de Pomeron Exclusiva no Experimento D0  

SciTech Connect

The first search for exclusive diffractive dijet production with invariant mass {approx}> 100 GeV in Run II of the Fermilab Tevatron Collider is performed. The set of data used is the Run IIa, corresponding to an integrated luminosity of 30 pb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV taken with the D0 detector. At 95% CL, an upper limit for the ratio between the number of diffractive exclusive events and the number of non diffractive events is set to be 7.5 x 10{sup -6}, excluding two of the three models proposed to explain this production.

Rangel, Murilo, Santana; /Rio de Janeiro, CBPF

2008-10-01

174

La anemia por deficiencia de hierro: estrategias de la OPS\\/OMS para combatirla  

Microsoft Academic Search

Iron deficiency anemia is among the greatest nutritional problems in the world. Although its etiology is understood and intervention at low cost is available, the problem per- sists. The present review begins with a general estimate of the dimensions of the problem. It suggests the necessary elements for the design, implementation, and measurement of the impact of iron supplementing and

Wilma B. Freire; Freire WB

1998-01-01

175

Estado da Arte para Solução dos Problemas Vibroacústica por Métodos Numéricos  

Microsoft Academic Search

This paper presents the fundamentals of the numerical methods used in the acoustics and vibration fields as; Finite Elements Methods (FEM), Boundary Element Methods (BEM), Acoustic Rays, and Statistical Energy Analysis (SEA). State of arts and trend for future methods are presented. Some results are presented for practical study cases. RESUMO Neste trabalho serão apresentados os fundamentos dos métodos numéricos

Palestra Convidado; REFERÊNCIA PACS; Samir N. Y. Gerges

176

INFLUENCIA DEL CAMPO RESIDUAL TENSO-DEFORMACIONAL EN LA FRAGILIZACIÓN POR HIDRÓGENO DE ACEROS DE PRETENSADO  

Microsoft Academic Search

Hydrogen induced fracture (HIF) plays an important role in the performance of cold-drawn prestressing steel wires in harsh environments. To this end, the knowledge of residual stresses and plastic strains in wires due to cold-drawing, as well as of wires hydrogenation from harsh environments are the keys to successful predictions of wire lives. This paper advances previous analyses of HIF

V. Kharin; J. G. Ballesteros; J. A. Blanco; D. Vergara; J. Toribio

177

Trastornos neurocognitivos en la infección por el virus de la inmunodeficiencia humana  

Microsoft Academic Search

Disruption of neurocognitive functioning is one of most frequent complications in patients with HIV infection nowadays. The Highly Active Antiretroviral Therapy (HAART) has demonstrated an improvement associated with its use, although there are different works that show this improvement is achieved in a low proportion of individuals who initiate therapy. The most known characterization of neurocognitive dysfunction is the HIV-associated

José A. Muñoz-Moreno; Jordi Blanch Andreu

2009-01-01

178

Análisis comparativo de las ecuaciones desarrolladas por Jackson et al y por el American College of Sports Medicine (ACSM) para predecir el consumo máximo de oxígeno en estudiantes de fisioterapia  

Microsoft Academic Search

ObjectiveComparativily to analyze the equations developed by Jackson et al, in order to prediction of functional capacity aerobic exercise without making exercise (Nonexercise regression models to estimate peak oxygen consumption [PAR\\/PAF]) and the calculation made in endless band propose by ACSM (American College of Sports Medicine) in a group of students physical therapy.

R. Ramírez Vélez; P. Delgado

2008-01-01

179

Sintetizacao de Filmes de Diamante Assistido Por JATO de Plasma Gerado Por Uma Descarga Eletrica Tipo Arco Em Baixa Pressao, Parte 2 (Synthesis of Diamond Film Assisted by an Arcjet Plasma Source, Part 2).  

National Technical Information Service (NTIS)

This report presents the results of the initial characterization of a plasma jet projected for diamond thin film deposition. The temperature and density profiles were measured with a double electrostatic probe. A conceptual project involving the design of...

P. R. P. Barreto E. Delbosco

1993-01-01

180

Costo-efectividad de los estudios de gammagrafía miocárdica e impacto al gasto total por diagnóstico de cardiopatía isquémica  

Microsoft Academic Search

Summary Background: Medical care in a hospital under a socialized me- dicine system should be highly effective at the lowest expense possible. When myocardial perfusion studies are performed in well-selected patients, the costs decrease because of the need for fewer invasive studies. When patients are not selected properly, there is an increase-wasted resource, making it necessary to perform cost-effective studies.

Alma Gabriela Valenzuela-Flores; Adriana Abigail Valenzuela-Flores; Héctor Arreola-Ornelas; Israel Calderón-Orozco; José C. Valdés-Durón; J. Pascual Pérez-Campos

181

Contaminación por nitrógeno inorgánico en los ecosistemas acuáticos: problemas medioambientales, criterios de calidad del agua, e implicaciones del cambio climático  

Microsoft Academic Search

climate change. The major environmental problems related to inorganic nitrogen pollution in aquatic ecosystems are: (1) acidification of lakes and rivers with low or reduced alkalinity; (2) eutrophication of fresh and marine waters (with the additional problem of toxic algae); and (3) direct toxicity of nitrogenous compounds to aquatic animals. Additionally, inorganic nitrogen pollution could induce adverse effects on human

J. A. Camargo; A. Alonso

182

VIABILIDADE DO FÍGADO BIOARTIFICIAL UTILIZANDO HEPATÓCITOS HUMANOS IMUNOPROTEGIDOS POR MACROENCAPSULAÇÃO ASSESSMENT OF BIOARTIFICIAL LIVER USING HUMAN HEPATOCYTES IMMUNOPROTECTED BY MACROENCAPSULATION  

Microsoft Academic Search

RESUMO: Objetivo: O transplante de hepatócitos xenogênicos encapsulados pode ser utilizado no futuro em situações como a insuficiência hepática fulminante. Porém, observa-se perda precoce da expressão de genes hepatocitários específicos em hepatócitos humanos. O objetivo deste estudo é avaliar a influência da resposta imunológica na perda da expressão genética hepatocitária de hepatócitos humanos encapsulados e transplantados em ratos. Método: Hepatócitos

João Eduardo; Leal Nicoluzzi; João Carlos Domingues Repka; Luiz Carlos Almeida Rocha; Antonio Carlos; Ligocki Campos; Pedro Ernesto Caron; Rolland Parc

183

Determinacao de uranio em urina por espectrometria alfa. (Determination of uranium in urine by Alpha-spectrometry).  

National Technical Information Service (NTIS)

A comparative study is presented for two technics of preparation sources for the determination of uranium isotopes by (alpha) - spectrometry: electrodeposition and chemical stripping with polymeric membrane containing trioctylphosphine oxide (TOPO). A met...

C. L. Duarte M. S. M. Szeles

1989-01-01

184

Síntesis y sinterización de soluciones sólidas de cromita de lantano obtenidas por el método de coprecipitación en medio alcalino  

Microsoft Academic Search

In the present work, three different solid solutions of lanthanum chromite, La0.8Ca0.2Cr1-xAlxO3, where Al= 5 y 10 % molar; and LaCr0.9Al0.1O3, were prepared by the alkaline coprecipitation method. The preparation of the precursor gel was carried out by mixing solutions of Cr(NO3)3 and AlCl3 at two volumetric ratios (9.5:0.5 and 9:1). The pH of the main solution was adjusted to

J. C. REndón-ÁngElES

185

Síntesis por rutas químicas y estructura cristalina de la fase Aurivillius Bi4Ti3O12  

Microsoft Academic Search

Not Available Bibtex entry for this abstract Preferred format for this abstract (see Preferences) Find Similar Abstracts: Use: Authors Title Return: Query Results Return items starting with number Query Form Database: Astronomy Physics arXiv e-prints

M. García-Guaderrama; M. E. Botello-Zubiate; A. Márquez-Lucero; J. A. Matutes-Aquino; L. E. Fuentes-Cobas

2004-01-01

186

Projecto Assistido por Computador de Misturadores com Tecmes para Microondas (MESFET Microwave Mixers Design Using CAD Tools).  

National Technical Information Service (NTIS)

Recent trends in High Frequency Telecommunication Systems call for the development of low cost and high performant microwave circuits. A key element in superheterodyne receivers is the frequency converter. This report relates to developing a computer-aide...

M. J. R. do Rosario

1992-01-01

187

LA ESPECTROSCOPÍA DE IMPEDANCIA ELECTROQUÍMICA (EIS) APLICADA AL ESTUDIO DEL MECANISMO DE LA CORROSIÓN EN CALIENTE POR SALES FUNDIDAS  

Microsoft Academic Search

Hot corrosion is the accelerated oxidation of material exposed to high temperatures induced by a molten salt. Electrochemical techniques are used to evaluate corrosion reactions under simulated conditions. Nowadays, corrosion monitoring on real time is not available for boiling materials; therefore, it is necessary to research about EIS and its application on monitoring equipment. An electrochemic al cell was built

SANDRO BÁEZ; JOSÉ LUIS TRISTANCHO; YESID PEÑA; Ciencia de Materiales

188

Produção Fecal e Fluxo Duodenal de Matéria Seca e Matéria Orgânica Estimados por Meio de Indicadores1  

Microsoft Academic Search

This research was conducted to compare the internal markers: indigestible neutral detergent fiber and acid detergent fiber, obtained after 144 h of in vitro (ivNDF, ivADF) and in situ (isNDF, isADF) rumen incubations; and the chromium oxide (Cr2O3) as external marker. The fecal output of dry matter and organic matter and the duodenal flow of crossbred steers, castrated and canulated

Djalma de Freitas; Telma Teresinha Berchielli; Roselene Nunes da Silveira; João Paulo Guimarães Soares; Juliano J. de Resende Fernandes; Alexandre Vaz Pires

189

Análisis de la Amplitud de las Señales de Emisión Acústica Generadas por Corrosión Bajo Tensión en Latón-?  

Microsoft Academic Search

The present work was aimed to characterize the acoustic emission (AE) response obtained during the propagation of stress corrosion cracks. The differences between the AE signals generated by transgranular and intergranular SCC were analyzed. For that purpose, slow strain rate tensile tests (SSRT) under potentiostatic control were performed. The systems studied were: 1) yellow brass in a 1M NaNO2 solution;

P. A. Lapitz; J. Ruzzante; M. G. Alvarez; Agencia de Promoción Científica; Tecnológica Argentina

2005-01-01

190

Riesgo laboral y residencial por exposición a campos electromagnéticos Labour and residential risk due to electromagnetic fields exposition  

Microsoft Academic Search

In the recent years, there has been an increment of ex- position to electromagnetic fields (EMF), specially residen- tial and labour exposure. Some scientist allege that exposure to electric and mag- netic fields generated mainly by electric power delivery sys- tems is responsible for health problems as reproductive dys- function, birth defects, neurological disorders and cancer. This article provides a

M. Física; Pastor Vega

191

FUNGEMIAS POR Pichia anomala EN PACIENTES PEDIATRICOS INMUNOCOMPROMETIDOS HOSPITALIZADOS (Fungaemias by Pichia anomala in immunocompromised hospitalized pediatric patients)  

Microsoft Academic Search

Pichia anomala is an opportunistic emerging yeast, occasionally responsible for serious hospital infections both in lactating babies and in immuno- compromised children. We describe herein the presence of P. anomala in the blood of thirteen catherized children which was detected at the Hospital del Niño Jesús de Tucumán (Argentina), within a 5-year period. The above cases represent 9.71% out of

Rosa Runco; Raquel Salim

192

Producao de Etanol por Fermentacao Extractiva com Celulas de Levedura Imobilizadas (Extractive Fermentation of Ethanol by Immobilized Yeast Cells).  

National Technical Information Service (NTIS)

Ethanol Production by Extractive Fermentation of glucose in the presence of media saturated with DBBP (dibutylbutylphosphorate) was performed in a semi-fluidized bed reactor by immobilized yeast cells of Saccharomyces bayanus in Ca-alginate matrices with ...

S. M. M. Dias

1991-01-01

193

Plantas asociadas a la pesca y a sus recursos por los Indígenas Chorote del Chaco Semiarido (Argentina)  

Microsoft Academic Search

Summary: Plants associated to fishing and to their resources by Chorote indians from Chaco Semiarido (Argentine). Chorote indians belong to the Mataco-mataguayo linguistic family, they live in Argentina's Semiarid Chaco along the riverbanks of the Pilcomayo river in Salta province. Traditionally, they obtained their own living from hunting, gathering and fishing; being the latter of high cultural and economic value

GUSTAVO F. SCARPA

194

Efecto del glicerol sobre la catálisis por fosfatasa ácida de bajo peso molecular de hígado de alpaca (Lama pacos)  

Microsoft Academic Search

Objective: To determine the effect of glycerol on hydrolisis of p-nitrophenyl phosphate at pH 5,0 by low molecular weight acid phosphatase from alpaca liver. Design: Experimental analytical study. Setting: Biochemistry and Nutrition Research Center, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Materials: Disodic p-nitrophenyl phosphate salt, glacial acetic acid, glycerol, tricloroacetic acid, sulfuric acid, ammonium molibdate,

Emilio Guija; Fernando Arauco; Hielke Haak-Mares; Mercedes Soberón

2007-01-01

195

Como ayudar a los padres a prevenir el envenenamiento por plomo (Helping Parents Prevent Lead Poisoning). ERIC Digest.  

ERIC Educational Resources Information Center

Children are at greater risk than adults for lead poisoning because children absorb lead more readily than adults, and a small amount of lead in children's bodies can do a great deal of harm. This Spanish-language Digest summarizes some of the causes and effects of childhood lead poisoning and suggests some lead poisoning prevention strategies…

Binns, Helen J.; Ricks, Omar Benton

196

Relationship between hepatic phenotype and changes in gene expression in cytochrome P450 reductase (POR) null mice  

PubMed Central

Cytochrome P450 reductase is the unique electron donor for microsomal cytochrome P450s; these enzymes play a major role in the metabolism of endogenous and xenobiotic compounds. In mice with a liver-specific deletion of cytochrome P450 reductase, hepatic cytochrome P450 activity is ablated, with consequent changes in bile acid and lipid homoeostasis. In order to gain insights into the metabolic changes resulting from this phenotype, we have analysed changes in hepatic mRNA expression using microarray analysis and real-time PCR. In parallel with the perturbations in bile acid levels, changes in the expression of key enzymes involved in cholesterol and lipid homoeostasis were observed in hepatic cytochrome P450 reductase null mice. This was characterized by a reduced expression of Cyp7b1, and elevation of Cyp7a1 and Cyp8b1 expression. The levels of mRNAs for other cytochrome P450 genes, including Cyp2b10, Cyp2c29, Cyp3a11 and Cyp3a16, were increased, demonstrating that endogenous factors play a role in regulating the expression of these proteins and that the increases are due, at least in part, to altered levels of transcripts. In addition, levels of mRNAs encoding genes involved in glycolysis and lipid transport were also increased; the latter may provide an explanation for the increased hepatic lipid content observed in the hepatic null mice. Serum testosterone and oestradiol levels were lowered, accompanied by significantly decreased expression of Hsd3b2 (3?-hydroxy-?5-steroid dehydrogenase-2), Hsd3b5 (3?-hydroxy-?5-steroid dehydrogenase-5) and Hsd11b1 (11?-hydroxysteroid dehydrogenase type 1), key enzymes in steroid hormone metabolism. These microarray data provide important insights into the control of metabolic pathways by the cytochrome system.

Wang, Xiu Jun; Chamberlain, Mark; Vassieva, Olga; Henderson, Colin J.; Wolf, C. Roland

2005-01-01

197

Ecologia de mosquitos (Diptera, Culicidae) em áreas do Parque Nacional do Iguaçu, Brasil: 1 ­ Distribuição por hábitat  

Microsoft Academic Search

A study of the mosquito fauna in the Iguaçu National Park focused on population be- havior in four biotopes with different types of plant cover inside the Park. Systematic bimonthly diurnal and nocturnal human bait and Shannon trap captures were conducted in both forest and domiciliary environments over the course of 24 months. A total of 20,273 adult mosquito specimens

Anthony Érico Guimarães; Catarina Macedo Lopes; Rubens Pinto de Mello; Jeronimo Alencar

2003-01-01

198

Modificaciones en la actividad del diafragma inducidas por laparotomía media y cambios en la rigidez de la pared abdominal  

Microsoft Academic Search

Introduction and ObjectiveDiaphragmatic activity varies with the initial length of the muscle. Our objective was to evaluate the influence of surgery and changes in abdominal wall compliance on diaphragmatic activity.

Joaquim Gea; Juan Bautista Gáldiz; Norman Comtois; Ercheng Zhu; Igor Salazkin; José Antonio Fiz; Alejandro Grassino

2009-01-01

199

ANÁLISIS POR PROVINCIAS DE LA CONTRIBUCIÓN DEL CAPITAL HUMANO A LA PRODUCCIÓN NACIONAL EN LA DÉCADA DE LOS NOVENTA  

Microsoft Academic Search

This paper contains an analysis of the economic effects of human capital onproduction, measured as Gross Value Added per full-time equivalent worker. To thisend, a Cobb-Douglas type production function has been used, with Gross Value Added(GVA) a function of human capital and private and public physical capital. Provincialdata from the 1990s were used. Results obtained applying the panel-data techniqueshow human

2005-01-01

200

Carcinoma epidermoide infiltrante de clítoris en paciente de 30 años, no ligado a infección por virus del papiloma humano  

Microsoft Academic Search

Invasive squamous cell carcinoma of the vulva is exceptional before the age of 40 years. We present a differentiated squamous carcinoma of the clitoris in a 30-year-old nulliparous woman who presented with vulvodynia for the past 2 years. On examination, a suspicious tumor was detected in the clitoris. Biopsy revealed an invasive squamous cell carcinoma of the vulva, stage Ia.

Carlos Amselem; Carmen Sala; Enric Genover; M. Teresa Fernández-Figueras; Lluís Puig

2010-01-01

201

Eficiência de serrarias na Amazônia: uma análise por envoltória de dados Sawmill efficiency in the Brazilian Amazon: a DEA analysis  

Microsoft Academic Search

The technical efficiency of sawmills is an important issue for sustainable development (social, environ - mental and economic dimensions), since efficiency levels may influence the area logged to meet timber demand. The objective of this work is to characterize the technical efficiency of sawmills located in different logging frontiers in the Brazilian Amazon using Data Envelopment Analysis (DEA). Drawing upon

Alexander J. Macpherson; Marco W. Lentini; Douglas R. Carter; Wandreia N. Baitz

202

Recuperacao de Imagens Medicas por Conteudo em um Sistema de Gerenciamento de Banco de Dados de Codigo Livre  

Microsoft Academic Search

This paper presents the techniques and the implementation of content-based similarity queries of medical images in an open source database management system, PostgreSQL. The main aspects regarding similarity queries, as image feature extraction and indexing are explained. Empowered with the new features, the development teams working with computer-aided diagnostics systems and medical learning systems can pose similarity queries over images

Humberto Razente; Maria Camila; N. Barioni; Agma J. M. Traina; Caetano Traina Jr

203

Educación superior e ingresos laborales: Estimaciones paramétricas y no paramétricas de la rentabilidad por niveles y carreras en el Perú  

Microsoft Academic Search

Si relacionamos el logaritmo del ingreso laboral con los años de educación a través de una especificación “minceriana” tradicional obtenemos que, en el Perú, el rendimiento de un año adicional de educación sería del orden del 10%. En la primera parte de este estudio, sin embargo, encontramos que los principales supuestos que permiten relacionar este porcentaje con el concepto de

Gustavo Yamada; Juan F. Castro

2010-01-01

204

Caracterización de la diversidad genética en el pez Brycon henni (Characiformes: Characidae) en Colombia central por medio de marcadores RAPD  

Microsoft Academic Search

Characterization of the genetic diversity of the fish Brycon henni (Characiformes: Characidae) in central Colombia with RAPD markers. Knowledge on the genetic diversity of wild fish species is essential for conservation and appropriate management of individuals in repopulation programs. In Colombia, Brycon henni has been reported in the Magdalena and Cauca river basins, but the population and range have diminished

Hermes Pineda Santis; Lucy Arboleda Chacón; Amparo Echeverry Echavarria; Silvio Urcuqui Inchima; Diego Pareja Molina; Martha Olivera Ángel; Juan Builes Gómez

2007-01-01

205

Sistema Grafico Para O Tracado de Cartas Sinoticas Por Computado (A Graphic System for Drawing Synoptic Maps by Computer).  

National Technical Information Service (NTIS)

A graphic computer system developed to draw synoptic charts and to store meteorological data in a data base at the Institute of Space Research is described. The system, SINOGRAFO, was used to trace the contour of South America and international boundaries...

S. R. M. Pellegrino J. A. G. Pereira

1984-01-01

206

Tratamiento con ribavirina inhalada en el síndrome de dificultad respiratoria aguda inducida por virus respiratorio sincitial en el adulto  

Microsoft Academic Search

Respiratory syncytial virus (RSV) infection-induced acute respiratory distress syndrome (ARDS) in previously healthy adults is rare, but the overall mortality rate is 40-60%. Inhaled ribavirin is approved for the treatment of hospitalized infants and young children with severe lower respiratory tract infections due to RSV. We present the case of an adult female with RSV pneumonia-induced ARDS who was successfully

Yung-Hung Luo; Chu-Yun Huang; Kuang-Yao Yang; Yu-Chin Lee

2011-01-01

207

VARIABILIDAD ESPACIAL DE PROPIEDADES HIDRAULICAS Y ELEMENTOS TRAZA EN SUELOS AFECTADOS POR EL VERTIDO DE AZNALCOLLAR SOMETIDOS A RECUPERACION  

Microsoft Academic Search

RESUMEN. Después del accidente minero de Aznalcóllar (25\\/04\\/98) se llevaron a cabo las labores de recuperación de los suelos, consistentes en: a) la remoción de los lodos depositados sobre la superficie de los mismos, así como de una capa de suelo contaminado de hasta 20 cm de profundidad, y b) la aplicación de enmiendas. Como consecuencia de estas labores, quedaron

F. Moreno; I. F. Girón; F. Cabrera

208

FLORESCIMENTO E FRUTIFICAÇÃO DE MANGUEIRA (Mangifera indica L.) CV. ROSA PROMOVIDOS POR DIFERENTES DOSES DE PACLOBUTRAZOL1  

Microsoft Academic Search

Efficient techniques as the floral induction allow the establishment of commercialization strategies for favorable periods of market and economical success in the cultivation of mango fruits. An experiment, was conducted in order to study the effect of different paclobutrazol doses (PBZ) on the flowering and production of mango fruits Cv. Rosa. The experiment design used was formed by randomized blocks

MARIA GEROLINA SILVA CARDOSO; ABEL REBOUÇAS; SÃO JOSÉ; ANSELMO ELOY; SILVEIRA VIANA; SYLVANA NAOMI MATSUMOTO; TIYOKO NAIR; HOJO REBOUÇAS

209

Evaluacion de que consister y por que se lleva acabo? (Evaluation: What Does it Consist of, and for What Purpose?).  

ERIC Educational Resources Information Center

A guide is presented for the evaluation of the bilingual programs in the Austin, Texas, Independent School District. The reasons for an evaluation and a definition of program objectives and evaluation instruments are given. The program components, objectives and evaluation instruments for each grade level (K-4) are listed. The components involved…

Austin Independent School District, TX. Office of Research and Evaluation.

210

Por que as crianças são maltratadas?: Explicações para a prática de maus-tratos infantis na literatura  

Microsoft Academic Search

This article analyzes the factors related to child abuse that have been published in three of the main Brazilian pediatrics journals. The literature was assessed by content analysis. Fourteen studies were analyzed. The main explanatory factors were: (a) reproduction of violence; (b) family and psychological disorders and alcohol abuse; and (c) the structural or macro-social order. The authors conclude that

Romeu Gomes; Suely Ferreira Deslades; Márcia Motta Veiga; Carlos Bhering; Jacqueline F. C. Santos

2002-01-01

211

CANASATE - Mapeamento DA Cana-DA-Acucar Por Satelite - Area 3 (CANASATE: Sugar Cane Mapping by Satellite, Area 3).  

National Technical Information Service (NTIS)

The CANASATE Project, Sugarcane Mapping by Satellite, has the objective of obtaining the spatial distribution and area estimations of sugarcane plantations, at national level, using remote sensing techniques. To achieve this objective, Brazil was divided ...

F. J. Mendonca D. A. Rosenthal K. Defaria M. Covre R. Dossantos

1986-01-01

212

Comienza la construcción de instalación patrocinada por el NCI en Puerto Rico para realizar estudios clínicos sobre el cáncer  

Cancer.gov

El gobierno de Puerto Rico ha destinado $196 millones de dólares para construir un hospital oncológico de 287 000 pies cuadrados en San Juan, que contará con 96 camas. El nuevo hospital es el primero en su clase en la región caribeña y en él se llevarán a cabo tratamientos para el cáncer y estudios clínicos.

213

Experimentos de Política Fiscal por el Lado de la Oferta en un Modelo Monetario de Crecimiento Endógeno  

Microsoft Academic Search

En este trabajo nos preguntamos, en el marco de un modelo de crecimiento endógeno con acumulación de capital humano, en un contexto determinista, si es posible reducir el tipo impositivo de diferentes impuestos financiadores de una senda predeterminada de gasto de modo que se permita equilibrar el presupuesto en el largo plazo (sin incrementar en períodos posteriores los impuestos). Si

Jesús Ruiz

2002-01-01

214

Aplicación del método de Gail de cálculo de riesgo de cáncer de mama a la población valenciana  

Microsoft Academic Search

Resumen\\u000a Objetivos  El objetivo del estudio es comprobar si el método definido por Gail es aplicable y predictivo en la población de mujeres valencianas.\\u000a \\u000a \\u000a \\u000a Material y métodos  Se identificaron 186 casos incidentes de las 685 pacientes atendidas de cáncer de mama durante el perio do 2000–2001. Las\\u000a variables estudiadas se obtuvieron mediante un cuestionario específico que incluía características reproductivas, número de\\u000a biopsias

Ismael Pascual Pastor Climente; María M. Morales Suárez-Varela; Agustín Llopis González; José F. Magraner Gil

2005-01-01

215

"Pig in a poke (gato por liebre)": The "mota" (Calophysus macropterus) Fishery, Molecular Evidence of Commercialization in Colombia and Toxicological Analyses.  

PubMed

Overfishing has affected the population abundance trends of many commercial fish species. In the Amazon, the fishery of a catfish commonly known as "mota" or "piracatinga" (Calophysus macropterus) has become an important economic activity in the region as this species has replaced a number of other overexploited great catfish species in the markets. Due to this high exploitation, ways in which to increase captures have been identified. One strategy is to use decomposing animal carcasses as bait. Such strategy has increased the hunting pressure on endangered species such as caimans and river dolphins. We investigated which catfish species are currently commercialized in Colombian fish markets using DNA barcoding, and measured mercury concentration in the tissues of fish molecularly identified as C. macropterus. We collected 86 fish samples in markets of four Colombian cities. Sixty-eight of these were identified molecularly as C.macropterus. The mercury concentration of 29 such samples was analyzed. Samples presented total Hg concentrations higher than the limit for human consumption established by the WHO (0.5 ?g/g). These results are worrisome and suggest that (1) C. macropterus is a widely used fish species for human consumption in Colombia and (2) C. macropterus has high concentrations of total Hg, making its consumption a public health risk. Results presented here suggest that C. macropterus has replaced capaz in most Colombian markets. This fishery threatens wild species of river dolphins and caimans, and is also a public health risk given the high mercury levels we found in a subsample of these fishes. PMID:24419666

Salinas, Cristian; Cubillos, Juan Camilo; Gómez, Rigoberto; Trujillo, Fernando; Caballero, Susana

2014-06-01

216

Efeitos protetor, curativo e erradicante de fungicidas no controle da ferrugem da soja causada por Phakopsora pachyrhizi, em casa de vegetação  

Microsoft Academic Search

Protective, curative and eradicative effects of fungicides to control soybean rust caused by Phakopsora pachyrhizi, in greenhouse Protective, curative and eradicative effects of systemic fungicides (azoxystrobin 50 g a.i.\\/ha + nimbus 0,5%, carbendazin 250 g a.i.\\/ha, tebuconazole 100 g a.i.\\/ha, difenoconazole 50 g a.i.\\/ha e epoxiconazole 25 g a.i.\\/ha + pyraclostrobin 66,5 g a.i.\\/ha) were evaluated in soybean (Glycine max)

Cláudia V. Godoy; Marcelo G. Canteri

2004-01-01

217

Pasto Apícola: Volume, Concentração e Açúcar Total do Néctar Secretado por Flores de Distintos Materiais Genéticos de Cajue iro (Anacardium oc- cidentale L.)  

Microsoft Academic Search

The work investigated whether different genetic constitutions of cashew (Anacardium occidentale L.) trees af- fected volume, concentration and total sugar (sucrose equivalents) of nectar secreted by their flowers, as well as pro- bable changes with time in nectar characteristics. Samples of nectar were collected from 1- and 2-day-old flowers, bagged and unbagged, at anthesis and when bees (Apis mellifera L.)

BRENO MAGALHÃES FREITAS

218

Communicating with Mexican Americans: Por Su Buena Salud = Communicando Con Mexico Americanos: For Their Good Health. Proceedings of the Conference (Houston, TX, September 13-14, 1979).  

ERIC Educational Resources Information Center

The conference focused on the role of the Mexican American's cultural language, tradition, life style, health practices, and media utilization in the design of effective health education and information programs. Representing various local, state, and national health, education, and media organizations, the 108 participants attended sessions on…

Moore, Thomas J., Ed.; And Others

219

Actividad antioxidante de la melatonina sobre el hígado graso inducido por etionina en ratones# Antioxidant activity of melatonin on fatty liver induced by ethionine in mice  

Microsoft Academic Search

SUMMARY The aim of this study was to determine the antioxidant activity of melatonin in female mice with ethionine-induced hepatic oxidative stress (HOS), and the effect of this hormone on the gluthatione peroxidase enzyme antioxidant activity. Twenty adult female NMRI mice were given intraperitoneally 3 mg\\/kg melatonin in 1% ethanol daily for 15 days, and 1% ethanol to the control

SM Ferraro; A López-Ortega

220

ESTUDIO DE LA DISPONIBILIDAD DEL FÓSFORO Y BORO APORTADOS POR LAS AGUAS DEPURADAS EN LA ISLA DE GRAN CANARIA: METODOLOGÍA Y RESULTADOS PRELIMINARES  

Microsoft Academic Search

Phosphorus and Boron are essential micronutrients for plant growth and their availability depends on their chemical speciation in reclaimed water irrigation and in soil solution. However, routine analysis seldom include speciation. For fertilization management and to evaluate the potential hazards associated with reclaimed water irrigation, the speciation is important. On the other hand, the sampling methodology used in this study

M. P. Palacios Díaz; J. M. Hernández Moreno

2003-01-01

221

Sintetizador de Frequencia Digital Directo para um Sistema de Espalhamento de Espectro por Salto em Frequencia (Direct Digital Frequency Synthesiser for Frequency Hopping Spread Spectrum).  

National Technical Information Service (NTIS)

The thesis has a complete study of a direct digital frequency synthesizer, DDFS, for application on frequency hopping spread spectrum systems. The study is developed in three parts: theoretical, software simulation, and hardware implementation. In the the...

F. A. B. Cercas

1988-01-01

222

Estudo de uma metodologia dosimetrica para plutonio por meio de analise radiotoxicologica em urina. (Study of a dosimetric methodology for plutonium by means of radiotoxicological analysis in urine).  

National Technical Information Service (NTIS)

The present study is mainly concerned with an internal individual monitoring program for workers dealing with (sup 239)Pu, by measuring the (sup 239)Pu content in their urine. General aspects related with the plutonium radiotoxicity and its chemical, phys...

S. A. Bellintani

1988-01-01

223

A PROPÓSITO DE LA ETIOLOGÍA BACTERIANA DE EPOC Y ASMA. INFECCIÓN POR Chlamydia pneumoniae Y ENFERMEDAD PULMONAR CRÓNICA: ¿RELACIÓN CAUSAL O EPIFENÓMENO?  

Microsoft Academic Search

Chlamydia pneumoniae is an intracellular bacteria involved in the development of acute respira- tory infections and in the physiopathology of chronic lung illnesses, specifi cally in COPD and adult asthma where it seems to play a role in their exacerbations. At the present time, there are diverse hypothesis being proposed to explain the relationship between the respiratory infections due to

LUIS EDUARDO PINO; Y GUSTAVO HINCAPIÉ; Servicio de Medicina Interna; División Médica

2008-01-01

224

Validación de un algoritmo para el cálculo del riesgo absoluto de fracturas no vertebrales por fragilidad en una cohorte de mujeres posmenopáusicas  

Microsoft Academic Search

Background and ObjectivesAbsolute risk estimate for fractures in the individual subject provides meaningful information for interventions. Recently, we have described an algorithm to calculate the absolute risk for non-vertebral fractures in women from Spain, aged 65 years or older, that includes clinical parameters and quantitative bone ultrasound values of the calcaneus (URL: www.ecosap.info). We assessed the performance of the algorithm

Joan Vila; Fernando Marín; Jesús González-Macías; Dionisio Martín; Sandra Tojeiro; Adolfo Díez-Pérez

2009-01-01

225

Effect of Diesel Engine Converted to Sequential Por t Injection Compressed Natural Gas Engine on the Cylinder Pressure vs Crank Angle in Variation Engine Speeds  

Microsoft Academic Search

The diesel engine converted to compressed natural gas (CNG) engine effect is lower in performance. Problem statement : The hypothesis is that the lower performance of C NG engine is caused by the effect of lower in engine cylinder pr essure. Are the CNG engine is lower cylinder pressure than diesel engine? This research is condu cted to investigate the

Abdul Rahim Ismail

2009-01-01

226

PROPUEST A METODOLÓGICA PARA PRIORIZAR ÁREAS CON AMENAZA POR CAÍDA DE ROCAS EN ENTORNOS URBANOS, COMO BASE PARA EL REORDENAMIENT O URBANO Y LA MITIGACIÓN DEL RIESGO  

Microsoft Academic Search

This paper describes a qualitative methodology for the assessment of rock fall physical risk index at large-scale (1:1000). Through a detailed geologic and geomorphological survey both rock fall deposits and rock fall sources are identified and mapped. Analysis of the rock fall deposits give indications over the temporal frequency and spatial distribution of the phenomenon and point out the most

Medio Ambiente; R. D. V Geoconsulting

227

Análisis comparativo del VO 2máx estimado mediante las ecuaciones desarrolladas por Jackson et al y el American College of Sport Medicine en corredores de maratón  

Microsoft Academic Search

BackgroundReduced cardiorespiratory function is an independent risk factor for mortality by all causes, but mainly for coronary heart disease. Nevertheless, there are many difficulties in evaluating it by exercise testing in the epidemiological context. Alternative forms of evaluation have therefore been suggested using non-exercise regression models.

Robinson Ramírez Vélez; Ricardo Antonio Agredo Zuñiga; José Guillermo Ortega Ávila; Viviana Andrea Dosman González; Carlos Alejandro López Alban

2009-01-01

228

Calibracion en maniqui de un equipo de alta tasa de dosis por carga remota. (In phantom calibration of a high dose rate remote afterloading device).  

National Technical Information Service (NTIS)

The high dose-rate (HDR) brachytherapy in Cuba is based on soviet made devices type AGAT-V. In order to calibration one of these for clinical use a method based of the different measurement of absorbed dose at the reference point B in a paraffin phantom w...

R. Alfonso P. Tolede V. Pich

1995-01-01

229

Preparacion por descarga luminiscente y caracterizacion electrooptica de aleaciones de silicio amorfo para celulas solares. (Glow discharge preparation and electrooptical characterisation of amorphous silicon alloys for solar cells).  

National Technical Information Service (NTIS)

A study is presented, focused on the preparation and characterisation of hydrogenated amorphous silicon alloy thin films for their application as p type window layers in pin silicon solar cells. The preparation technique used was radio frequency glow disc...

J. Carabe

1990-01-01

230

Producción de enzimas lignolíticas por Basidiomycetes mediante la técnica de fermentación en sustrato sólido Solid substrate fermentation for lignolytic enzyme production using Basidiomycetes  

Microsoft Academic Search

Solid substrate fermentation has wide industrial application; nowadays enzymes are mainly used in obtaining dairy products, sweeteners, drugs, food, liquor, detergent, etc. Lignin is enzymatically degraded by Basidiomycetes fungi through the non-specific oxidation of three different types of enzymes: laccase, manganese-peroxidase and lignin-peroxidase. Their non-specificity is most important in degrading different recalcitrant substances showing structural similarity with lignin, such as

Angélica María; García Torres; Rodrigo Gonzalo Torres Sáe

2003-01-01

231

¿POR QUE UN MERCADO DE SUBYACENTES TIENE PODER ECONÓMICO DE DERRUMBAR UN MERCADO REAL? TEOREMA GLOBAL DE LA NO AGREGACIÓN DE CADENAS ECONÓMICAS  

Microsoft Academic Search

Las cosas últimamente, ya comienzan a estar un poquitín chungas para Europa, como para tomárselo a broma. Estados unidos, mas o menos, esta reaccionando, pero lo cierto es que Europa, no la veo yo muy bien que digamos. Así que tratemos de echar una manita, pues ya sin ningún tipo de broma, Europa esta al borde del colapso.

David Sánchez Palacios

2010-01-01

232

Applications of Reinforced Glass and Polyethylene Fibers in Orthodontic Practice - Part I Uso de Fibras de Vidro e Polietileno Reforçados por Resina em Ortodontia - Parte I  

Microsoft Academic Search

Resumo Este artigo aborda a utilização clínica de fibras de vidro e de polietileno em Ortodontia. Casos clínicos ilustram a sua utilização de modo tradicional e inovador o que vem mudar conceitos, a mecânica e a estética dos aparelhos fixos. Como vantagens são destaca - das a realização de tratamentos com menor utilização de braquetes, fios e bandas, maior conforto

Daniel Ianni

2003-01-01

233

Efeito tópico de iodo-povidona 0,5% comparado com natamicina 5% em ceratites fúngicas causadas por Fusarium solani em um modelo animal de coelhos: estudo piloto  

Microsoft Academic Search

Purpose: To evaluate the efficacy of topical administration of 0.5% povidone-iodine in experimental Fusarium solani keratitis in rabbits. Methods: Fungal keratitis caused by Fusarium solani was induced in the right eye of 24 New Zealand rabbits. The rabbits were randomly divided into 3 different treatment groups: Group I (povidone-iodine) - treated with topical 0.5% povidone-iodine; Group II (natamycin) - treated

Lauro Augusto de Oliveira; Thales Takeo Takata; Olga Fischman Gompertz; Luciene Barbosa de Sous; Mark J. Mannis

234

NEL R E VIEW - H AR V A RD R E POR T The role of stress in neurodegenerative diseases and mental disorders  

Microsoft Academic Search

OBJECTIVE: Evidence for a connection between stress and selected neuro degene- rative diseases as well as mental disorders is analyzed. Does stress cause or exacerbate related pathophysiological disease processes? METHOD: The stress phenomenon is illustrated and the impact of stress on the nervous system, neurodegenerative diseases, and mental disorders is examined. The connection between stress and the hippocampus - and

Tobias Esch; George B. Stefano; Gregory L. Fricchione; Herbert Benson

235

Cambios del EEG por habituación y condicionamiento en niños de tres a 15 años que acuden al Instituto Nacional de Rehabilitación (INR)  

Microsoft Academic Search

SUMMARY During waking, stimuli activate the sensory pathways giving rise to sensation and the response to such stimulation. The electrobiochemical changes and modifications in EEG rhythms event- related synchronization or event-related desynchronization, ERD or ERS) propagated in the specific and unspecific cortex are added to the changes elicited by the responses and to the new signals originated by those same

Héctor Brust-Carmona; Francisco Ramírez-Aboytes; José Martínez; Ángel Rodríguez Miguel; Blanca Flores-Ávalos; Oscar Yáñez-Suárez

2009-01-01

236

DETECTION OF GENETICALLY MODIFIED MAIZE FOOD PRODUCTS BY THE POLYMERASE CHAIN REACTION DETECCIÓN DE PRODUCTOS DE MAIZ GENETICAMENTE MODIFICADOS POR LA REACCIÓN EN CADENA DE LA POLIMERASA  

Microsoft Academic Search

A polymerase chain reaction (PCR) was applied to detect genetically modified (GM) maize and soybean food product, using specific 35S promoter primers for inserted chimerical genes in maize or soybean. The PCR detected food products that include ingredients obtained from GMOs in maize grains and flour, as well as processed in foods such as tortillas (Mexican crepe), corn chips, corn

A. Mendoza; S. Fernández; M. A. Cruz; M. A. Rodríguez-Perez; D. Resendez-Perez; H. A. Barrera Saldaña

2006-01-01

237

Simulacao Do Ambiente Espacial Do Satelite SCD-01 Por Placas Aquecedoras (Space Environment Simulation of the SCD-01 Satellite Through Heating Plates).  

National Technical Information Service (NTIS)

The space simulation model was developed for the realization of thermal vacuum tests acceptance of the SCD-01 Brazilian satellite. The adopted method is based in the simulation by infrared heater plates. The results confirmed the technic suitability.

H. Pontescardoso E. Castejongarcia

1989-01-01

238

Validação das Equações Desenvolvidas por Hankins e Howe para Predição da Composição da Carcaça de Zebuínos e Desenvolvimento de Equações para Estimativa da Composição Corporal1  

Microsoft Academic Search

The equations developed by Hankins and Howe were validated in order to predict the physical and chemical carcass composition and equations were developed aiming to estimate the body composition of zebu cattle from the 9-10-11 th rib cut composition. Nineteen Zebu steers, with 270 kg of initial live weight (LW) and 2 years old were used. Four were slaughtered in

Pedro Veiga Rodrigues Paulino; Marcos Antônio; Lana Costa; Sebastião de Campos Valadares; Mário Fonseca Paulino; Rilene Ferreira Diniz Valadares; Karla Alves Magalhães; Edenio Detman; Marlos Oliveira Porto; Kamila Andreatta; Kling de Moraes

239

MÉTODOS DE CUSTEIO POR ABSORÇÃO E VARIÃVEL NA OVINOCULTURA DE CORTE: ESTUDO DE CASO EM UMA CABANHA  

Microsoft Academic Search

The importance of the rural accounting in cost verification for agribusiness activities is highlighted in this study of which general aim is to identify and measure the production costs of ovine, by means of the absorption costing and variable costing methods, aiming to demonstrate the values of the stocks and the economic results of a farm in Itapiranga (SC). Besides

Marino Luiz Eyerkaufer; Adilson Costa; Ana Cristina de Faria

2007-01-01

240

Cs-137 en leche procedente de Lituania. Dosis en infantes por ingestion. (Cs-137 in milk produced in Lithuania. Dose in infants by ingestion).  

National Technical Information Service (NTIS)

The Chernobyl accident caused a wide dispersion of radionuclides over extended in Europe. Cuba received a shipment of evaporated, milk produced in Lithuania to feed infants in Havana. Taking into account the origin and the final use of the mentioned produ...

S. F. Jerez Vegueria I. Frometa Suarez

1997-01-01

241

Extracao continua de uranio e molibdenio por lixiviacao com acido sulfurico. (Continuos extraction of uranium and molibdenum by lixiviation with sulfuric acid).  

National Technical Information Service (NTIS)

A methodology for collecting data of uranium and molibdenum extraction by lixiviation with sulfuric acid is showed. Discontinuous tests of lixiviation, time influence, temperature, granulation, acid/ore relation, oxidant/ore relation and solid percentage ...

M. Cripiani

1980-01-01

242

Caso Chernobyl: sus repercusiones en el sistema Internacional sobre responsabilidad civil por danos nucleares. (Chernobyl case: its repercussions on the International System on Civil Liability for Nuclear Damages).  

National Technical Information Service (NTIS)

With the discovery of the Nuclear Energy the world has been development her life the present investigation is based in the accident of the one of the most important Nuclear Power Plant in the world, situated in the Union of Socialist Sovietic Republics. T...

J. L. Gonzalez Guadarrama

1992-01-01

243

Estudo e otimizacao do processo de obtencao de carbeto de boro por reducao carbotermica. (Study and optimization of the carbothermic reduction process for obtaining boron carbide).  

National Technical Information Service (NTIS)

Boron carbide - B sub(4)C - is a ceramic material of technological importance due to its hardness and high chemical and thermal stabilities. Moreover, its high neutron capture cross section makes it suitable for application as neutron absorber in nuclear ...

A. R. M. Castro

1989-01-01

244

DETERMINACIÓN DEL FALLO POR FATIGA EN BASE A CONSIDERACIONES ENERGÉTICAS DE COMPONENTES DE PA 6.6 REFORZADA CON FIBRA DE VIDRIO  

Microsoft Academic Search

Among the elements used by the Spanish High, Speed Train in the system for fastening the rail to the sleeper, there are several structural components manufactured with materials composed of a thermoplastic matrix, PA 6.6, reinforced with short fibre-glass. These components are continuously subjected to dynamic strains of a cyclical nature due to the passing of the train wheels. Previous

I. Carrascal; J. A. Casado; J. A. Polanco; F. Gutiérrez-Solana

245

EFECTO RESIDUAL DE LA ROCA FOSFÓRICA DE RIECITO MODIFICADA POR CALCINACIÓN O ACIDULACIÓN SOBRE PLANTAS DE MAÍZ EN SUELOS CON NIVEL VARIABLE DE CALCIO1  

Microsoft Academic Search

Residual effect of acidulated or burnt Riecito phosphoric rock on maize grown in soils with variable levels of calcium With the purpose of evaluating the residual effect of phosphoric rock from Riecito (Venezuela) treated with vinaza or high temperatures, three successive crops of corn, used as indicative plant, were grown in an acid soil (pH 3.7) whitewashed up to pH

Shirley M. Fernández; Carlos A. Meza

2004-01-01

246

Aprimoramentos No Processo de Desidratacao de Hidrazina Por Hidroxido de Sodio (Improvements in the Process of Dehydrating Hydrazine by Sodium Hydroxide).  

National Technical Information Service (NTIS)

The dehydrating effect of alkaline metal oxides and hydroxides on hydrazine solutions is widely discussed in the literature and many authors affirm the efficiency of sodium hydroxide as a dehydrating agent. Due to the limited liquid miscibility of sodium ...

M. A. Ferreira I. C. C. Calegao A. G. Defreitas

1984-01-01

247

Estudo experimental do processo de obtencao de zirconio metalico por magnesiotermia. (Experimental study of the magnesothermic process for obtaining metallic zirconium).  

National Technical Information Service (NTIS)

Metallic zirconium is a material of high technological importance due to its high strength and corrosion resistance. Moreover, its relatively low thermal neutron cross sections makes a suitable component for cladding alloys for nuclear reactor fuel pellet...

D. Monzani

1989-01-01

248

INOCULACIÓN, SÍNTOMAS, Y COLONIZACIÓN EN ÁRBOLES DE MANZANO EN CONTENEDOR POR Phymatotrichopsis omnivora (Duggar) Hennebert INOCULATION, SYMPTOMS, AND COLONIZATION IN CONTAINERIZED APPLE TREES BY Phymatotrichopsis omnivora (Duggar) Hennebert  

Microsoft Academic Search

The understanding of infection and colonization rates of soil- borne pathogens on perennial crops is critical for determining proper timing of appropriate control measures. Studies were conducted to evaluate symptoms and colonization of roots of containerized apple trees by Phymatotrichopsis omnivora (Duggar) Hennebert during 1997 and 1998 at College Station, TX (USA). Three-year-old trees growing in 114 L containers were

Wesley Todd-Watson; David Nye-Appel; Michael Aloysius-Arnold; Charles Miller-Kenerley; James Lester-Starr; Tomás Martínez-Trinidad

2007-01-01

249

Escenarios de vulnerabilidad por ascenso del nivel del mar en la costa mexicana del Golfo de México y el Mar Caribe  

Microsoft Academic Search

Vulnerable zones to sea level changes were identified using geomorphological anaiysis. Through this zoning, areas of fiood impact, 1 and 2 m above sea level. were estimated. A map of impact distribution was obtalned using digital terrain models.

Mario Arturo; Ortiz Pérez; Ana Patricia; Méndez Linares

250

Microcantidades de hafnio en circonio en filmes delgados por fluorescencia de Rayos X. (X-ray fluorescence of microquantities of hafnium in zirconium by precipitation as thin film).  

National Technical Information Service (NTIS)

The importance of Zr and Hf in the nuclear industry represents and increasing need for the development of reliable chemical methods to determine Hf traces in Zr matrix. A precipitation method in amoniacal medium was developed. A thin film is obtained wher...

D. Vigoda de Leyt A. F. Caridi J. Deibe

1988-01-01

251

Caracterizacao de filmes finos de siliceto de titanio por tecnicas de difracao de raio X. (Characterization of titanium silicide thin films by X-ray diffraction techniques).  

National Technical Information Service (NTIS)

This thesis deals with characterization techniques of thin films by means of X-ray diffraction. This includes phase identification and residual stress, microstress and crystallite size calculations. The techniques developed were applied on the study of th...

N. J. Morimoto

1987-01-01

252

Comparacion de modelos de Educacion Sexual en el conocimiento y cambio de actitudes en practicas sexuales por alumnos de nivel superior en la region de Caguas, Puerto Rico  

NASA Astrophysics Data System (ADS)

In opposition to the Sexual Education Traditional Model (SETM) that is used in the state schools of Puerto Rico, the Health Beliefs Model (HBM) appears. It facilitates a curricular design that improves the ability of the students to respond to the group pressure by means of attitudes that stimulate sexual conducts of smaller risk of propagation of the Sexually Transmitted Diseases (STD). In addition, it provides activities to increase the self-esteem, the communication and the decision making. This investigation had the intention to compare the SETM and the HBM in the increase of knowledge and change of attitudes of high risk of propagation of the STD using a validated questionnaire (Agency of the United States for the International-USAID Development), named "Endesa 2007" and, adapted to Puerto Rico by the Dra.Marta Collazo to a sample of students between the 17 and 19 years of 2 state schools of San Lorenzo, as a pretest, and, selected by convenience. Then, a 10 hours training was administered to half of the students using the SETM to STD and condom use lessons. The other half of the students received additional lessons using the HBM. Finally, both groups took the questionnaire again as a posttest. The sample of students, in average, did not reach the knowledge and basic levels of attitudes towards the STD in the pretest. This reflected 2 possible implications on the SETM. In first place, that the way in which the STD is implemented as part of the Sexual Education curriculum is inefficient. Secondly, the possibility that the acquired information or attitudes does not have permanence. Culminated the questionnaire, the HBM increase the knowledge of the STD in 0.41 points (average) over the SETM. There was not a significant difference between both models, in attitudes, implying that both models are equally effective. The findings suggests that the HBM is more effective increasing the knowledge on the STD, but equally effective than the SETM in attitude change for the Puerto Rican youth.

Juan, Vallejo Ramos L.

253

O Debate sobre a Homossexualidade Mediado por Representações Sociais: Perspectivas Homossexuais e Heterossexuais The Debate on Homosexuality Mediated by Social Representations: Homosexual and Heterosexual Perspectives  

Microsoft Academic Search

Resumo O objetivo deste trabalho foi estudar as representações sociais da homossexualidade entre estudantes universitários, segundo orientação sexual e sexo. Foram aplicadas uma questão de associação livre sobre a palavra homossexualidade e outra sobre as possíveis causas da mesma, sendo os dados analisados segundo os princípios da análise de conteúdo. Houve diferenças significativas entre os grupos, possibilitando-nos encontrar diferentes maneiras

Anderson Scardua; Edson Alves de Souza

254

Evaluacion de la Accion Ovicida y Antihelmintica por Examenes Coproparasitologicos (Experiments to Determine Ovicidal Action in Sheep of Four Antihelminthic Agents).  

National Technical Information Service (NTIS)

These are reports of experiments whereby 4 antihelminthic agents were tested for their ovicidal effect. The agents tested were: Thiabendazole, Phenothiazine, Tetramizol and Neguvon; each is reported on in a separate pamphlet. In the first experiment, shee...

W. A. J. Rosa

1973-01-01

255

PROBLEMÁTICA GENERADA POR LA UTILIZACIÓN DE VENTOSAS MAL SELECCIONADAS A CAUSA DE LAS DISCREPANCIAS EXISTENTES EN LAS CURVAS CARACTERÍSTICAS QUE MODELAN SU COMPORTAMIENTO  

Microsoft Academic Search

The presence of air in water supply systems is, in many cases, unavoidable. The air develops into the pipes due to very different reasons and causes a big number of problems, which can become even catastrophic for the installations. A good solution for avoiding these problems is the use of air valves. Most manufacturers provide the graphic behaviour of their

Vicente S. Fuertes Miquel; Pedro L. Iglesias Rey; Joaquín Izquierdo Sebastián; Gonzalo López

256

Marcado general con tritio de la gentamicina C por intercambio catalitico con agua tritiada. (General Tritium labelling of gentamicin C by catalytic hydrogen exchange reaction with tritiated water).  

National Technical Information Service (NTIS)

Gentamicin C was labelled with tritium by means of a PtO(sub 2) catalyzed hydrogen exchange reaction. Under the conditions of the exchange (100 mg of gentamicin, basic form, 0,3 ml H(sub 2)O-(sup 3)H, and 50 mg of prereduced PtO(sub 2)) the radiochemical ...

C. Suarez D. Diaz

1991-01-01

257

ANÁLISIS DE IMAGEN PARA LA CUANTIFICACIÓN DE CAMBIOS MORFOLÓGICOS EN BIOMASA GRANULAR, INDUCIDOS POR LA PRESENCIA DE NITRATO EN REACTORES EGSB  

Microsoft Academic Search

Cuatro reactores EGSB (R1-R4) fueron operados a velocidades de carga orgánica de 10 kgCOD\\/(m3.d), tiempos de retención hidráulicos de 3.6 h, velocidades superficiales de 10 m\\/h y diferentes concentraciones de nitrato a la entrada, 0, 20, 60 y 100 mgN-NO3-\\/L en R1, R2, R3 and R4, respectivamente. Después de 20 días de operación continua, la biomasa granular fue caracterizada en

P. Araya Kroff; A. L. Amaral; M. Mota; E. C. Ferreira; M. M. Alves

258

Aplicacion de los plasmas generados por laser a la determinacion de carbono en aceros. (Application of laser-produced-plasmas to determination of carbon content in steel).  

National Technical Information Service (NTIS)

This paper describes an analytical method to determine carbon content in solid and molten steel. It is based on the study of the emission spectrum from a Nd-YAG laser produced plasma. The light emitted from the plasma is focused to the entrance slit of a ...

M. Ortiz C. Aragon J. A. Aguilera J. Campos

1994-01-01

259

Bibliografia de Trabajos Publicados por el CIAT y su Personal Cientifico. Vol. 2. (Bibliography of the Research Papers Published by CIAT and Its Scientific Personnel. Vol. 2.),  

National Technical Information Service (NTIS)

The second volume of the Bibliography of the Research Papers published by The International Center for Tropical Agriculture (CIAT) and its Scientific Personnel is produced to form, together with the first volume, a bibliographic database that can be used ...

S. Gomez V

1986-01-01

260

COMBATE DE LA PUDRICION PEDU.NCULAR DEL MANGO CAUSADA POR Botryodiplodia theobromae PAT. MEDIANTE EL MANTENIMIENTO DE LOS PEDICELOS Y EL DESLECHADO SOBRE LAMINAS  

Microsoft Academic Search

Se detennino el efecto de hacer el desle- Cultural practices to control of mango chado de frutos de mango en el suelo y sobre una stem-end rot caused by Botryodiplodia theo- lamina de hierro galvanizado (lamina de zinc), bromaes Pat. The following practices were eva- eliminando 0 dejando el pedunculo para ambos luated for the control of stem-end rot of

Eugenia Gonzalez; Gerardina Umana; Luis Felipe Arauz

261

Irradiacao de borbulhas visando a obtencao de resistencia ao cancro citrico por inducao de mutacao. (Bud irradiation to obtain resistence to citrus canker through induction of mutation).  

National Technical Information Service (NTIS)

The radiosensitivity to gamma rays of the bud of the orange cultivar Pera is determined through irradiation of buds with several doses; the irradiated buds were grafted onto rootstocks of lemon cu. Cravo. The grafting percentage and the development of the...

J. O. M. Menten J. Pompeu P. Dragone J. T. Sobrinho V. A. Prada

1989-01-01

262

Sindicalismo e luta por direitos sociais do trabalh o em Juiz de Fora nos conturbados anos dos governos provisório e constitucional de Getúlio Vargas (1930-1937)  

Microsoft Academic Search

Resumo: A decretação de um conjunto significativo de leis trabalhistas no início de 1932 fez com que, nos anos seguintes, os dirigentes dos sindicatos re conhecidos desencadeassem variadas ações classistas em Juiz de Fora. Além de procurar forçar o empresar iado local a respeitar essa nova legislação social, reivindicavam das autoridades federais a aplicação efetiva e a ampliação dos benefícios

Luís Eduardo de Oliveira

263

Separacao de tracos de neptunio de solucoes de uranio por cromatografia de extracao. (Neptunium separation in trace levels from uranium solutions by extraction chromatography).  

National Technical Information Service (NTIS)

Neptunium and uranium behavior in extraction chromatography system, aiming the separation of microquantities of neptunium from uranyl nitrate solutions is described. Tri-n-octylamina (TOA), tri-n-butylphosphate (TBP), thenoyltrifluoroacetone (TTA) as stat...

M. E. B. Figols

1991-01-01

264

DETECCIÓN OPTOACÚSTICA DE NO2 CON EXCITACIÓN POR UN ARREGLO TRANSVERSAL DE LEDS AZULES NO2 OPTOACOUSTIC DETECTION BY TRANSVERSAL EXCITATION WITH AN ARRAY OF BLUE LEDS  

Microsoft Academic Search

Se desarrolló una celda simple de vidrio cerrada de forma cilíndrica, para aplicación en detección optoacústica, que es iluminada transversalmente con 32 LEDs azules distribuidos uniformemente a lo largo del tubo. Se forzó la excitación del segundo modo longitudinal iluminando en un semiciclo la zona central, comprendida entre los nodos de la onda estacionaria. Asimismo, durante el otro semiciclo, se

G. D. Santiago; A. L. Peuriot; F. González; V. B. Slezak; M. G. González

265

OCORRÊNCIA DE AFLATOXINAS EM ARROZ CONSUMIDO POR MILIT ARES DO EXÉRCITO BRASILEIRO POR CROMA TOGRAFIA EM CAMADA DELGADA E CROMA TOGRAFIA LÍQUIDA DE ALTA EFICIÊNCIA Incidence of aflatoxins in rice to be consumed by militaries in the brazilian army by thin layer chromatography and high performance liquid chromatography methods  

Microsoft Academic Search

Aspergillus are fungal species like a A flavus and A parasiticus and they are able to develop secondary metabolites called mycotoxins. They grow quickly under ideal conditions. From the moment one discovered its danger for health resulted from the presence of aflatoxins in foods, an achievement was carried out to evaluate the presence of a mycotoxins lifiting in benefited polished

Jader Oliveira da Silva; Lys Mary Bileski Cândido; Daiana Novello; Cintia Machado

266

Analisis por activacion neutronica de los principios activos de MIBI, MAG-3 y fitato de sodio. (Neutron activation analysis of the MIBI, MAG-3 and sodium fitate active principles).  

National Technical Information Service (NTIS)

Neutron activation analysis (NAA) both instrumental (INAA) and radiochemical (RNAA) are extensively applied for determination of minor and trace elements in samples of quite different origin and composition. Particularly, the application of INAA is well r...

G. Capote Rodriguez G. Perez Sayaz J. Moreno Bermudez S. Ribeiro Guevara J. Molina Insfran

1996-01-01

267

Consequencia da operacao das bombas de refrigeracao do reator durante um acidente de perda de refrigerante primario por grande ruptura. (Consequences in the pumps operation during a large loss of coolant accident).  

National Technical Information Service (NTIS)

The event of living on or turning off the operation of the Reactor Cooling Pumps - RCPs, in the case of a Loss of Coolant Accident - LOCA, has been a reason of a lot of studies after the Three Mile Island 2 accident. Thus, it was investigated a large brea...

G. A. Santos G. Sabundjian

1991-01-01

268

About to Graduate from High School? Consider Career Education Opportunities. EdSource Student/Parent Guide = Estas por graduarte de la escuela preparatoria? Considera oportunidades para seguir tu educacion de carrera. EdSource guia de estudiantes y padres  

ERIC Educational Resources Information Center

Getting a sound education is important to a student's ability to make a good living in a field they will enjoy. For many students graduating from high school, that includes high quality career technical (or vocational) education tailored to a specific job. In California, such programs are available in a wide range of fields, from healthcare to the…

EdSource, 2006

2006-01-01

269

Porque a planicie costeira do rio Paraiba do Sul nao pode ser denominada de classico delta dominado por ondas. (Why the coastal plain of Paraiba do Sul river not be denominated the classical model of wave dominated delta).  

National Technical Information Service (NTIS)

Existing coastal sedimentation models have not properly incorporated the fundamental role of Holocene sea-level history in the development of modern coastal regions. For example the classical work by COLEMAN and WRIGHT (1975), although analyzing the influ...

L. Martin

1987-01-01

270

The Latinas' Guide to the Information Superhighway: A Bilingual Guide for Latinas by Latinas = Guia para Mujeres Latinas sobre la Supercarretera de la Informacion: Una Guia Bilingue para Latinas por medio de Latinas.  

ERIC Educational Resources Information Center

This guide to the Internet is designed to give Latinas basic information on computers and the information superhighway. Written in both Spanish and English, the guide begins by defining the Internet and making some suggestions about acquiring access to a computer. Among the topics discussed are how to choose an Internet service provider, how to…

MANA, A National Latina Organization, Washington, DC.

271

Treatment of ureteral calculi by ureteroscopy: experience of 100 cases at the Faculdade de Medicina do ABC (FMABC - Medical School) Tratamento de cálculos ureterais por ureteroscopia: experiência em 100 casos da Faculdade de Medicina do ABC  

Microsoft Academic Search

Objective: To report the experience of treating ureteral calculi by ureteroscopy at the Faculdade de Medicina do ABC - SP, with an emphasis on the efficacy and safety of the method. Methods: A retrospective analysis of 100 ureteroscopies performed from January 2001 to August 2003 in 98 patients with ureteral calculi. Results: A 91% success rate was observed with a

Gava MM; Mattos MHE; Borrelli M; Wroclawski ER; Antonio Corrêa; Lopes Neto; Marcello Machado Gava; Mário Henrique; Elias de Mattos; Eric Roger Wroclawski

272

Graftizacao do n-vinil-2-pirrolidona sobre o polietileno por irradiacao gama: preparacao e caracterizacao. (Grafting of n-vinyl-2-pyrrolidone over polyethylene by gamma irradiation: preparation and characterization).  

National Technical Information Service (NTIS)

Some parameters for the preparation of low density polyethylene films (LDPE) grafted with N-vinyl-2-pirrolidone (NVP) by the simultaneous irradiation method were determined. The concentration of NVP for a grafting degree of 69% (maximum) was 60% (v/v), at...

A. A. A. Queiroz O. Z. Higa

1991-01-01

273

Utilização de dados MODIS e modelo SEBAL para a estimativa da perda de água por evapotranspiração: Uma proposição metodológica para o monitoramento do impacto da expansão da cultura canavieira na dinâmica hídrica regional  

Microsoft Academic Search

This work proposes a methodology for sugarcane expansion monitoring and its possible impacts in the regional hydric dynamic through the real evapotranspiration estimation (ET) based on Terra\\/Modis satellite data. The methodological approach is based on a systematic and automatic land use mapping that uses a sequence of temporal profiles Vegetation Index (NDVI) built with Modis data JONATHAN (2005). Previous Studies

Rodrigo Peçanha; Demonte Ferraz

2009-01-01

274

A Study of the Topography of Crystalline Imperfections by the Parallel Beam Method of X-Ray Diffraction (Estudio Topografico de Las Imperfecciones de UN Cristal Por Difraccion de Rayos X; Metodo Del Haz Paralelo).  

National Technical Information Service (NTIS)

The theoretical background of the parallel beam method is discussed. The intensity of the diffracted beam is proportional to absolute value of F(h) or absolute value squared of F(h)2 according to the dynamical or geometrical theory, respectively. The dyna...

J. L. Amoros P. Tavira

1964-01-01

275

The role of dietary supplements in cytochrome P450-mediated drug interactions (El papel de los suplementos dietarios en las interacciones de fármacos mediadas por el citocromo P450)  

Microsoft Academic Search

Due in part to the increased consumption of herbal products on a global scale, a sharp rise in the reported number of both in vitro and in vivo interactions of herbals with prescription drugs that are metabolized by cytochrome P450 (CYP) enzymes has been observed. Popular products such as ginseng, saw palmetto and St. John's wort have demonstrated potent in

Robert S. FOTI; Jan L. WAHLSTROM

2008-01-01

276

Dependencia do grau de cristalinidade com a graftizacao induzida por radiacao gama da N,N(sup ') - dimetilacrilamida em polietileno. (Dependence of crystallinity degree with induced grafting by gamma radiation of N,N(sup ')-dimethyl acrylamide).  

National Technical Information Service (NTIS)

N,N' -dimethyl acrylamide (DMAA) graft copolymerization onto polyethylene films was carried out, using a organic solvent as a reaction medium and gamma rays from a (sup 60) Co source for surface activation. Thermal analysis revealed the crystallinity and ...

A. A. A. Queiroz O. Z. Higa E. R. Barrak I. Giolito

1991-01-01

277

Um caso de sinovite vilonodular do ombro em adolescente: diagnóstico por imagem e anatomopatológico A case of villonodular synovitis of the shoulder in an adolescent: imaging and pathologic diagnosis  

Microsoft Academic Search

Chronic monoarthritis demand an investigation of inflammatory diseases, such as rheumatoid arthritis (RA), infectious diseases like tuberculosis; and other diseases that cause synovitis and joint effu- sion, such as pigmented villonodular synovitis (PVNS), synovial he- mangioma, synovial osteochondromatosis and arborescence lipoma. We report the case of a young patient with chronic right shoulder monoarthritis, who's magnetic resonance imaging (MRI) showed

278

Sobrevivencia diminuida do bacteriofago (lambda)15 induzida por UV-365nm em Escherichia coli. (Decreased survival of the (lambda)15 bacteriophage induced by UV-365 nanometers in Escherichia coli).  

National Technical Information Service (NTIS)

The results of our investigation showed a new effect (not yet described in the current literature) of the UV-365 nm, verified when the bacteria E. coli was irradiated with this wavelenght and then infected with bacteriophage irradiated with short UV (254 ...

M. E. M. Luca

1989-01-01

279

Implementacion del analisis por activacion neutronica en el multiplicador neutronico CS-ISCTN (primera parte). (Implementation of neutron activation analysis in the neutron multiplier CS-ISCTN (first part)).  

National Technical Information Service (NTIS)

The detection limit of 32 elements are determined after experimental evaluation of the neutron flux components in the irradiation position of the neutron multiplier CS-ISCTN. The control of the thermal flux was continued, comparing the experimental result...

R. Contreras M. Ixquiac O. Hernandez E. F. Herrera O. Diaz

1997-01-01

280

Analise genetica da variacao induzida por radiacao gama em caracteres quantitativos de Caupi (Vigna unguiculata (L.) Walp.). (Genetical analysis of the induced variation by gamma radiation in quantitative features of Caupi (Vigna unguiculata (L.) Walp.)).  

National Technical Information Service (NTIS)

Genetical analysis procedures of the cobalt 60 gamma radiation effects in the induced mutations in quantitative characters of Caupi BR-1 Poty. The following characters were evaluated: day to first flower (FI), number of pods per plant (NVP), pod lenght (C...

J. P. P. Araujo

1987-01-01

281

Synchronization Tolerance to Receiving Errors in Coded Em and PCM Signals Transmitted by Meteorological Satellites Sincronizacao Tolerante a Erros Para a Recepcao de Sinais Codificados Em PCM, Transmitidos Por Satelites Meteorologicos.  

National Technical Information Service (NTIS)

The error tolerant synchronization technique was used in the reception of PCM signals that were transmitted by geostationary satellites, and the usual errors probabilities associated with it were 1 part per million. Some algorithms for minimizing the sync...

V. Rodrigues

1980-01-01

282

Sintetizador/Modulador FM de 1200 Canais Para Transmissao Scpc de Sinais de Voz Por Satelite (FM Synthesizer-Modulator with 1200 Channels for SCPC Transmission of Voice Signals by Satellite).  

National Technical Information Service (NTIS)

Practical implementation of a synthesizer at 52,020 to 87,990 MHz wavelength with frequency increments of 30 KHz is described. The phase-locked loop (PLL) technique of synthesis, also known as coherent indirect synthesis, is utilized. This technique invol...

P. Adabo

1983-01-01

283

Estudo da viabilidade de analise direta dos componentes inorganicos do carvao e coque por espectrometria de fluorescencia de raios-X. (Feasibility study of direct analysis of coal and coke inorganic components by X-ray fluorescence spectroscopy).  

National Technical Information Service (NTIS)

The efficiency of an analysis process for coal and coke inorganic components by X-ray fluorescent spectroscopy is tested. The graphics and results are shown, concluding that this methodology can be used for regular attendments. (C.G.C.). (Atomindex citati...

A. F. Valadares J. E. Salgado J. R. Castro L. G. Pretti W. Castro Rodrigues

1987-01-01

284

Rendimiento y producción de gas in vitro de maíces híbridos conservados por ensilaje o henificado Forage yield, chemical composition and in vitro gas production of four corn hybrids preserved as silage or hay  

Microsoft Academic Search

Forage yield, chemical composition and in vitro fermentability and degradability were determined for four hybrid corn varieties (Aspros-721, H-33, VS2000 and Cacahuacintle) preserved as hay (H) or silage (S). During the Spring-Summer 2001 agricole cycle, seeds of each variety were sown in a 256 m2 experimental parcel at an 85,000 plants\\/ha density. Samples were harvested 158 d later and preserved

Martina Antolín Domínguez; Manuel González Ronquillo; Susana Goñi Cedeño; Ignacio Arturo Domínguez Vara; Cynthia Ariciaga González

285

Tratamento de gases toxico SO(sub 2) e NO(sub X) por irradiacao com feixe de eletrons. (Treatment of toxic gases SO(sub 2) and NO (sub X) by electron beam irradiation).  

National Technical Information Service (NTIS)

The removal of SO(sub 2) and NO(sub x) by electron beam irradiation will be studied using a small scale flow system which is being set up in order to obtain basic data for the process technical and economical feasibility concerning industrial applications...

D. Castro Rubio Poli J. M. Vieira C. A. Campos

1993-01-01

286

Foreign body aspiration in children and adolescents: experience of a Brazilian referral center* Aspiração de corpo estranho por menores de 15 anos: experiência de um centro de referência do Brasil  

Microsoft Academic Search

Objective: To describe the clinical, radiological and endoscopic characteristics of foreign body aspiration among individuals under the age of 15 treated at a referral center in the city of São Luís, Brazil. Methods: This was a descriptive study using data from the medical charts of patients treated for foreign body aspiration at the Hospital Universitário Materno Infantil between 1995 and

Sílvia Teresa; Evangelista Vidotto; Marco Antonio Barbieri; José Albuquerque de Figueiredo Neto

287

Aplicacion de la espectrometria de alta resolucion de rayos x precedida por la activacion neutronica al analisis elemental de suelos. (Application of high resolution x-ray spectrometry preceded by neutron activation for elemental analysis of soil samples).  

National Technical Information Service (NTIS)

Utilization of High Resolution X-Ray Spectrometry preceded by activation of the samples by irradiation with neutron fluxes (NAA(sub R)X) is a relatively modern trend in application of nuclear techniques. This method may complement advantageously the usual...

A. Hernandez Rivero G. Capote Rodriguez E. Herrera Peraza

1996-01-01

288

Applicability of Ambler's risk score to patients who have undergone valve replacement with bovine pericardial bioprosthesis Aplicabilidade do escore de risco de Ambler para pacientes com substituição valvar por bioprótese de pericárdio bovino  

Microsoft Academic Search

Objetives: This study aims to verify the applicability of Ambler's risk score to patients who have undergone implantation of bovine pericardial bioprosthesis at the Instituto de Cardiologia do RGS\\/FCU. This study also aims to quantify the risk factors. Methods: Retrospective study with 703 patients who had undergone implantation of bovine pericardial bioprosthesis between 1991 and 2005 at the Instituto de

Gustavo DE BACCO; Mateus W. DE BACCO; João Ricardo; Michelin SANT' ANNA; Marisa F SANTOS

289

Solucion numerica de la ecuacion de transporte de neutrones en geometria plana mediante esquemas analiticos empleando aceleracion por difusion sintetica. (Numerical solution of the equation of neutrons transport on plane geometry by analytical schemes using acceleration by synthetic diffusion).  

National Technical Information Service (NTIS)

A computer program has been developed which uses a technique of synthetic acceleration by diffusion by analytical schemes. Both in the diffusion equation as in that of transport, analytical schemes were used which allowed a substantial time saving in the ...

G. Alonso-Vargas

1991-01-01

290

Guiandose por la Intrincada Senda de la Educacion Especial: Una Guia para Padres y Maestros. Tercera Edicion. (Negotiating the Special Education Maze: A Guide for Parents & Teachers. Third Edition).  

ERIC Educational Resources Information Center

Designed to assist Spanish-speaking parents and teachers in understanding special education procedures, this book describes the process for obtaining school services for children with disabilities. An introduction reviews six major provisions of the Individuals with Disabilities Education Act (IDEA) that relate to children's rights to a free,…

Anderson, Winifred; Chitwood, Stephen; Hayden, Deidre

291

Bacterial, fungal and yeast contamination in six brands of irreversible hydrocolloid impression materials Contaminação por bactérias, fungos e leveduras em seis marcas comerciais de materiais de moldagem à base de hidrocolóide irreversível  

Microsoft Academic Search

This study assessed the level of contamination of six commercially available ir- reversible hydrocolloids (two containing chlorhexidine) and identified the contamination present in the materials. Petri dishes containing selective and enriched culture media were inoculated with alginate powder (0.06 g), in triplicate. After incubation (37°C\\/7 days), the colony-forming units (CFU) were counted and Gram stained. Biochemical identification of the different

Luciana Assirati Casemiro; Carlos Henrique; Gomes Martins; Fernanda de Carvalho; Panzeri Pires; Heitor Panzeri; Isabel Yoko Ito

292

Determinacion de Cr, Mn, Si y Ni en aceros al carbono por analisis espectral de emision con fuente de chispa. (Determination of Cr, Mn, Si, and Ni in carbon steels by optical emission spectrometry with spark source).  

National Technical Information Service (NTIS)

Elemental composition of steels determines some important of his characteristic moreover it is necessary to obtain their quality certification. Analytical procedure has performed for determination of Cr, Mn, Si and Ni in carbon steels by optical emission ...

M. A. Garcia Gonzalez M. Pomares Alfonso L. Mora Lopez

1995-01-01

293

MÉTODOS DE CUSTEIO POR ABSORÇÃO E VARIÁVEL NA OVINOCULTURA DE CORTE: ESTUDO DE CASO EM UMA CABANHA Methods of absorption costing and variable costing in ovine: case study in a farm  

Microsoft Academic Search

The importance of the rural accounting in cost verification for agribusiness activities is highlighted in this study of which general aim is to identify and measure the production costs of ovine, by means of the absorption costing and variable costing methods, aiming to demonstrate the values of the stocks and the economic results of a farm in Itapiranga (SC). Besides

Marino Luiz Eyerkaufer; Adilson Costa; Ana Cristina de Faria

2007-01-01

294

Changes in the Vertical Structure of the Waters Above the Rim of the Continental Shelf due to the Influence of Winds (Modificacoes na Estrutura Vertical das Augas Sobre a Borda da Plataforma Continental por Influencia do Vento).  

National Technical Information Service (NTIS)

In order to study the relationship between wind variations and the vertical structure of the water (upwelling) and witness the role played by this upwelling in the fertilization of the euphotic zone, the Oceanographic Ship 'ALMIRANTE SALDANHA' was anchore...

P. C. Moreira da Silva R. F. Rodrigues

1969-01-01

295

Feicoes Fisiograficas Submarinas DA Plataforma Continental Do Rio Grande Do Norte Visiveis Por Imagens de Satelite (Underwater Physiography of the Continental Shelf of Rio Grande Do Norte Visible Through Satellite Imagery).  

National Technical Information Service (NTIS)

Visible TM-LANDSAT imagery is introduced as an effective tool for the investigation of underwater physiography on a regional scale, down to 35 m depth, with a resolution of 30 m, on highly reflective seabed on continental shelves with highly transparent w...

R. Solewicz

1989-01-01

296

Criterios para establecer un metodo absoluto semicuantitativo por fluorescencia de rayos-x. Memoria Tecnica. (Criteria to establish an absolute semiquantitative analytic method by x-ray fluorescence. Technical Memory).  

National Technical Information Service (NTIS)

This work had been developed by fluorescence x-ray laboratory of Nuclear Studies Centre form Ecuador, it pretent to stablish an appropiate discernement of a FRX spectrum to know the concentration range form sample elements, minerals principaly, submit to ...

F. Echeverria

1990-01-01

297

Infección por parvovirus B19 asociada a hidrops fetal. Estudio de un caso con ecopsia Parvovirus B19 infection associated with hydrops fetalis. Study of a case by echopsy  

Microsoft Academic Search

SUMMARY Introduction: Parvovirus B19 infection in pregnancy can cause hydrops fetalis, spontaneus abortion, fetal anemia and intrauterine fetal death. Materials and methods: A case of hydrops fetalis studied by echopsy is reported. Results: The ultrasonographic study confirmed the hydrops and the presence and morphology of the organs. Microsco- pic examination revealed erytroid precursor cells and mio- cardyocytes with nuclear inclusions

Juliana Fariña González; Natalia Escribano Adam; Concepción Millana de Ynes; Miguel Ángel; Herraiz Martínez

298

Diseno y construccion de un prototipo para la destilacion de (sup 131) I por via seca. (Design and construction of a prototype for distillation of (sup 131) I by the dry method).  

National Technical Information Service (NTIS)

Due to need of a procedure standard for production of (sup 131) I in the Mexican Republic, is very important stablish, based in two proof for the method in hot of distillation in dry development satisfactory (radiochemistry purity of distillation 99.7 %)....

O. G. M. Palacios Gonzalez

1993-01-01

299

Dermatitis causada por Hylesia metabus (Lepidoptera: Hemileucidae) en la región costera del Estado del Delta del Amacuro, Venezuela [Dermatitis caused by Hylesia metabus (Lepidoptera: Hemileucidae) in the costal region of the state of Delta Amacuro, Venezuela].  

PubMed

2 cases of acute dermatitis caused by butterfly Hylesia metabus in an area that so far has not been considered as endemic for this species were presented. The dermatitis observed in these individuals may be described as very circumscribed, pruriginous, erythematous generalized protruding papules that may be compared with urticaria, and with a variable degree oedema. Monomorphic eruption consisting in small hard papules crowned by a little vesicle was also present. The lesions of these 2 patients evolved with intensely pruriginous papules for a week and after that they healed without dermatological sequelae. PMID:10349447

Rodríguez-Acosta, A; Rubiano, H; Reyes, M; Fernández, C T

1998-01-01

300

AVALIAÇÃO DE FERIDAS PELOS ENFERMEIROS DE INSTITUIÇÕES HOSPITALARES DA REDE PÚBLICA NURSE WOUND EVALUATIONS IN PUBLIC HOSPITAL INSTITUTIONS LA EVALUACIÓN DE HERIDAS REALIZADA POR LOS ENFERMEROS DE INSTITUCIONES HOSPITALARIAS DE LA RED PÚBLICA  

Microsoft Academic Search

Nursing evaluation constitutes an indispensable process in treating wounds. The objectives of this article are to verify the aspects considered by nurses in the wound evaluation process, identify the material resources used in order to proceed to the evaluation, and to investigate adherence to protocols and possible difficulties in their execution. This is an exploratory-descriptive study of qualitative nature, carried

Gleicyanne Ferreira da Cruz Morais; Simone Helena; Maria Julia Guimarães; Oliveira Soares; Morais GFC; Oliveira SHS; Soares MJGO

301

Proyecto de Ley por el Cual se Dicta el Estatuto General de Educacion y Pliego de Modificaciones Propuesto (Bill Establishing a General Statute for Education and Explanation of Proposed Modifications).  

ERIC Educational Resources Information Center

This document contains the 1971 Colombian education bill and suggested bill modifications. The bill states educational objectives and establishes the structure of the national education system, the organization for educational administration, financing procedures, regulations for educational personnel, and the means for implementing the…

Suarez Villa, Diego

302

Diseno de un sumidero asegurado adicional de calor por conveccion natural para reactores de agua a presion. (Design of an additional heat sink based on natural circulation in pressurized water reactors).  

National Technical Information Service (NTIS)

Residual heat removal through the steam generators in Nuclear Power Plant with pressurized water reactors (PWR) or pressurized heavy water reactors (PHWR in pressured vessel or pressured tube types) requires the maintenance of the steam generator inventor...

K. Frischengruber R. Solanilla R. Fernandez A. Blumenkrantz J. Castano

1989-01-01

303

Viajando por la Carretera de la Educacion Especial: Una Guia para los Padres para Tener un Viaje Feliz y Seguro (Traveling the Special Education Highway: A Parent's Guide to a Safe and Happy Journey).  

ERIC Educational Resources Information Center

Designed for Spanish-speaking parents, this brochure, written in Spanish, uses a car-trip analogy to describe special education services for students with disabilities. It addresses: (1) child find; (2) initial evaluation and eligibility determination; (3) categories of students who receive special education services and related services; (4)…

Santa Maria, Karen

304

Incidencia y mortalidad por cáncer en Navarra, 1998-2002. Evolución en los últimos 30 años Incidence and mortality due to cancer in Navarre, 1998-2002. Trends in the last 30 years  

Microsoft Academic Search

Between 1998-2002, 16,952 new cases of cancer were registered in Navarre. In men, the most frequently diagnosed cancers were in the following order: prostate, lung, colon and rectum, bladder and stomach, which accounted for 63.2%. In women, the sites were breast, colon and rectum, corpus uteri, stomach and ovary, which accounted for 57.6% of the cases.

E. Ardanaz; M. E. Pérez de Rada; C. Ezponda; A. Puras; M. Santamaría; I. Ezpeleta; J. J. Valerdi; F. J. Monzón; J. Lizarraga; C. Ortigosa; J. Resano; A. Barricarte

305

Efecto del extracto de metanol de Achyranthes aspera linn. sobre la hepatotoxicidad inducida por rifampicina en ratas Effect of methanol extract of Achyranthes aspera linn. On rifampicin- induced hepatotoxicity in rats  

Microsoft Academic Search

ABSTRACT ABSTRACT ABSTRACT ABSTRACT Methanol extract of aerial parts of Achyranthes aspera Linn. (Family: Amaranthaceae) was tested for its effect on Methanol extract of aerial parts of Achyranthes aspera Linn. (Family: Amaranthaceae) was tested for its effect on Methanol extract of aerial parts of Achyranthes aspera Linn. (Family: Amaranthaceae) was tested for its effect on Methanol extract of aerial parts

BAFNA AR; MISHRA SH

306

S?NDROME DO X FRGIL Estudo caso-controle envolvendo pacientes prØ e pÛs-puberais com diagnÛstico confirmado por anÆlise molecular  

Microsoft Academic Search

RESUMO - A sÌndrome do X frÆgil Ø a causa mais comum de retardo mental herdado; entretanto, Ø subdiagnosticada na populaÁªo pediÆtrica. Objetivamos, neste estudo, determinar as caracterÌsticas clÌnicas prØ e pÛs-puberais mais significativas observadas entre indivÌduos que apresentam a mutaÁªo no gene FMR- 1, e que possam ser utilizadas como mØtodo de triagem dos pacientes que devem ser submetidos

Raquel Boy; Santana Correia; Juan Clinton Llerena; Maria do Carmo Machado-Ferreira

307

(2.2.2-Cryptand)potassium bis-(cyanato-?N)(5,10,15,20-tetra-phenyl-por-phy-rin-ato-?(4)N)cobaltate(III) chloro-benzene hemisolvate.  

PubMed

In the title compound, [K(C(18)H(36)N(2)O(6))][Co(NCO)(2)(C(44)H(28)N(4))]·0.5C(6)H(5)Cl or [K(2,2,2-crypt)(+)][Co(III)(NCO)(2)(TPP)(-)]·0.5C(6)H(5)Cl, the Co(III) ion is octa-hedrally coordin-ated by two axial N-bonded NCO(-) anions and four pyrrole N atoms of the porphyrin. There is a major ruffling distortion of the porphyrin: the dihedral angles between trans pyrrole rings are 34.32?(14) and 34.72?(14)°. The potassium ion is coordinated by the six O atoms and two N atoms of the cryptand-222 mol-ecule and a weak K-O [3.407?(3)?Å] bond to one of the cyanate O atoms also occurs. The packing also features weak C-H?O and C-H?? inter-actions. The contribution to the scattering of the disordered chloro-benzene solvent mol-ecules was removed with the SQUEEZE function in PLATON [Spek (2009 ?). Acta Cryst. D65, 148-155]. PMID:23125591

Belhaj Ali, Bader; Belkhiria, Mohamed Salah; Daran, Jean-Claude; Nasri, Habib

2012-10-01

308

Determinacion de la composicion del gas de llenado de barras combustibles de la CNE por cromatografia en fase gaseosa. (Determination of the filling gas composition of the Embalse nuclear power plant's fuel rods by gas chromatography).  

National Technical Information Service (NTIS)

The present method is appropriate to evaluate the argon content in its mixture with hellium in Embalse nuclear power plant tubes, without active material. The maximum relative error within the range from 20% to 80% of argon, is of 1%. The detection limit ...

N. H. Serdeiro R. J. Correia

1990-01-01

309

Comparative study between two protocols used to treat the post-operative pain in pacients that underwent (LAUP) Estudo comparativo entre dois protocolos utilizados para tratamento da dor pós-operatória em pacientes submetidos a uvulopalatoplastia assistida por laser (LAUP)  

Microsoft Academic Search

One of the limiting factors for surgical procedures of palate in the treatment of sleep apnea and snore is the occurrence of excruciating pain. Among the procedures used there are those that provoke term-abrasion to obtain palatal ressection. These methods, including the laser tends to be quite painful, demanding the more variables therapeutic interventions. However, there are no evidences that

Serra Carapina; Espírito Santo

2007-01-01

310

Determinacao de Torio em solucoes simuladas do processo thorex por espectrometria de fluorescia de raios-X. (Thorium determination by X-ray Fluorescence Spectrometry in simulated thorex process solutions).  

National Technical Information Service (NTIS)

The X-ray fluorescence method for thorium determination in aqueous and organic (TBP-n-dodecane) solutions is described. The thin film-technique for sample preparation and a suitable internal standard have been used. Some parameters as analytical line, int...

M. Yamaura H. T. Matsuda

1989-01-01

311

Determinacao de elementos lantanidicos em oxidos purificados de lantanio, de samario e de gadolinio por espectrometria de emissao com plasma. (Inductively coupled plasma optical emission spectrometry analysis of lanthanum, samarium and gadolinium oxides for rare earths impurities).  

National Technical Information Service (NTIS)

An inductively coupled plasma optical emission spectrometry method is described for the determination of Sm, Eu, La, Gd, Dy, Pr, Ho, Nd, Tb and Y in purified oxides of lanthanum, samarium and gadolinium. The method enables a simple, precise and readily av...

L. C. P. Reino A. R. Lordello

1990-01-01

312

Determinacao de elementos lantanidicos em oxido purificado de neodimio por espectrometria de emissao atomica com plasma de acoplamento indutivo (ICP-AES). (Analysis of neodymium oxide for rare earth impurities by inductively coupled plasma atomic emission spectrometry).  

National Technical Information Service (NTIS)

A procedure for the determination of the rare earths elements in neodymium oxide with purity grade above 99% by inductively coupled plasma optical emission spectrometry is described. Determination limits were 0,005% for the elements Eu, Dy, Gd, Tb, Ho and...

L. C. Paula Reino F. A. C. Adami A. R. Lordello

1993-01-01

313

Uso y mejoramiento del analisis por activacion neutronica (metodo absoluto) para el estudio del contenido de nitrogeno en muestras vegetales. (Use and improvement of neutron activation analysis (absolute method) for the study of the nitrogen content in vegetal samples).  

National Technical Information Service (NTIS)

The experimental procedure which permit the evaluation of the contribution to the neutron flux originated by neutrons with energy lower than 14 MeV during the application of the absolute method when the irradiation geometry ca not be considered as an scat...

R. L. Soto Moran S. Szegedi J. L. Llopiz

1996-01-01

314

Aproveitamento do melaço e vinhaça de cana-de-açúcar como substrato para produção de biomassa protéica e lipídica por leveduras e bactéria Use of sugar cane molasses and vinasse for proteic and lipidic biomass production by yeast and bacteria  

Microsoft Academic Search

This work evaluated the lipid and protein growth and synthesis capacity by Saccharomyces cerevisiae, Rhodotoruda mucilaginosa, Candida lipolytica, a yeast isolated from vinasse lakes and Corynebacterium glutamicum in 10% molasses and sugar cane crude vinasse. All microorganisms grew both in molasses and vinasse. The highest growth in crude vinasse was performed by R. mucilaginosa (7.05 g\\/L), and in 10% molasses,

Marcia Luciana Cazetta; Maria Antonia

315

Proposta de criterio para valoracao monetaria de danos causados por derrames de petroleo ou de seus derivados no ambiente marinho. (Proposal of criterium for valuation of damages accused by petroleum and its derivatives spills on marine environment).  

National Technical Information Service (NTIS)

Answering to a Prosecuting Council request, CETESB-Environmental Protection Agency for the State of Sao Paulo, Brazil, developed the above proposal, which aim is to have the valuation for damages caused by petroleum and its derivatives spill on the sea. T...

A. Marcelino E. Haddad H. Aventurato M. A. V. Campos R. R. Serpa

1994-01-01

316

VISIÓN GENERAL DE LA EVALUACIÓN DEL RIESGO EN SALUD INFANTIL EMPLEANDO UN ENFOQUE POR ETAPAS DE DESARROLLO (American translation is: Overview of a Life Stage Approach to Children's Health Risk Assessment)  

EPA Science Inventory

Discussing the challenges associated with estimating and interpreting toxicant exposures and health risks from biomonitoring data. This extended abstract was translated in Spanish and published in Acta Toxicologica Argentina....

317

Dinâmica da eliminação de ovos por nematódeos gastrintestinais, durante o periparto de vacas de corte, no Estado do Pará Parasitic dynamics of gastrointestinal nematode infection in the periparturient period of beef cattle in the State of Para  

Microsoft Academic Search

The experiment was conducted to investigate the dynamics of infection by gastrointestinal nematodes during the periparturition period in cows. One hundred and six beef cows were divided into two groups: G1 was formed by 42 cows of one and two parturitions, and G2 by 76 cows of three or more parturitions. From the 120 days pre partum until the 90

Rinaldo Batista Viana; Jean Pierre Brasileiro Bispo; Cláudio Vieira de Araújo; Raimundo Nonato Moraes Benigno; Bruno Moura Monteiro; Solange Maria Gennari

2009-01-01

318

Induccion por radiacion gama de las funciones SOS en cepas de escherichia coli con diferentes capacidades de reparacion. (Sos - response induction by gamma radiation in Escherichia coli strains with different repair capacities).  

National Technical Information Service (NTIS)

The Sos - response in Escherichia coli is formed by several genes involved in mechanisms of tolerance and/or repair, and only activates when a DNA - damage appears. It is controlled by recA and lexA genes. In normal circumstances, LexA protein is linked i...

J. H. Serment Guerrero

1992-01-01

319

PRODUCTMDAD Y BIOMASA DEL FITOPLANCTON POR CLASES DE TAMAÑO, EN LA PARTE CENTRAL DEL GOLFO DE CALIFORNIA DURANTE PRIMAVERA, 1985 PHYTOPLANKTON PRODUCTMTY AND BIOMASS BY SIZE CLASSES, IN THE CENTRAL GULF OF CALIFORNIA DURING SPRING 1985  

Microsoft Academic Search

An oceanographic cruise was performed in the central region of the Gulf of California from March 31 to April 9, 1985. Nineteen hydrographic casts to 0, 25, 50, 75 and 100 m were made in four transects to estimate the size-fractionated biomass of the phytoplankton (chlorophyll a). Five size-fractionated 1%~ assimilation experiments were also done. A thermal front was recorded

José Rubén Lara-Lara; Roberto Millán-NúñezI; José Luis Lara-Osorio; Carmen Bazán-Guzmán; Facultad de Ciencias Marinas

320

Estimulacion proliferativa de celulas madre hematopoyeticas de raton por actividades circulantes producidas durante la recuperacion de un dano hematopoyetico radioinducido. (Stimulation of murine stem cell proliferation by circulating activities produced during the recovery of a radiation-induced hemopoietic injury).  

National Technical Information Service (NTIS)

The proliferative activity of CFU-S, low in normal steady state, increases after treatment with different aggressors, i.e. radiation. This stimulation has been attributed in part to a local regulation system of stem cell proliferation, and at least in par...

M. T. Grande Azanedo

1988-01-01

321

Desarrollo de un método por microextracción en fase sólida para el análisis de la fracción volátil de la miel de abeja de Yucatán Solidphase micro extraction method development for headspace analysis of volatile compounds in honeys from Yucatan  

Microsoft Academic Search

The assessment of the botanical origin of unifloral honeys is an important application in food quality control. The aroma is a quality factor of great importance in foods. The aroma of bee honey depends on its volatile fraction composition, which is influenced by both nectar composition and floral origin, which could also be associated with the honey's botanical origin. One

Luis Fernando Cuevas-Glory; Elizabeth Ortiz-Vázquez; Alma Centurión-Yah; Jorge Antonio; Pino Alea; Enrique Sauri-Duch

322

Estudio del concepto de diametro equivalente para transferencia de calor por conveccion forzada en canales anulares. (Study of the equivalent diameter concept for heat transfer by forced convection in annular channels.).  

National Technical Information Service (NTIS)

This work describes a comparative analysis between experimental values of heat transfer coefficients in fully developed turbulent flow for a concentric annular channel, and those calculated with the empirical correlations obtained for tubes by Dittus-Boel...

D. Mendez

1994-01-01

323

Estudo com radioaerossol de DTPA tecnecio-99m em pacientes portadores de pneumopatia por amiodarona. (Study with radio aerosol of DTPA technetium-99 m in individuals with pulmonary disease by amiodarone).  

National Technical Information Service (NTIS)

In order to evaluate the role of the clearance of 99 m Technetium chelated to diethylenetriamine-penta-acetate (99 m Tc-DTPA) in amiodarone induced pulmonary disease, 40 individuals were studied in four groups. After spirometry, where a volume-time curve ...

M. Terra Filho

1989-01-01

324

Determinacion del indice de madurez reticulocitaria por citometria de flujo: su aplicabilidad en casos de aplasia medular radioinducida. (Reticulocyte maturity index by flow cytometry: its applicability in radioinduced bone marrow aplasia).  

National Technical Information Service (NTIS)

Flow cytometric reticulocyte quantification was assayed in ten patients undergoing bone marrow transplantation (BMT) with previous conditioning chemotherapy and total body irradiation (TBI). A reticulocyte maturity index (RMI) was determined taking into a...

D. Dubner P. Gisone M. R. Perez

1995-01-01

325

Fields without Borders: An Anthology of Documentary Writing and Photography by Student Action with Farmworkers' Interns = Campos sin Fronteras: Una Antologia de Obras Escritas y Fotografia por Estudiantes Internos de Accion Estudiantil con Trabajadores Agricolas.  

ERIC Educational Resources Information Center

In this booklet, essays and poems, presented both in English and in Spanish, portray the feelings, conditions, and economic plight of migrant and seasonal farmworkers in North and South Carolina, often in their own words. A preface describes Student Action with Farmworkers summer internships in which college students spend 10 weeks working with…

Manly, Libby, Ed.; Okie, Alejandra, Ed.; Wiggins, Melinda, Ed.

326

Evaluación post-quirúrgica de la cirugía de estenosis lumbar degenerativa por método descompresivo selectivo Avaliação dos resultados do tratamento da estenose do canal lombar pela técnica da descompressão seletiva  

Microsoft Academic Search

Objective: The Senegas Recalibration Technique consists in a lumbar channel selective decompression conserving the estabilizated elements.The aim of this study was to present our experience in the treatment of the degenerative lumbar stenosis whith the Senegas technique. Methods: Thirth eight patients operated whit this technique whit a follow up of 53.92%(84-24) months were evaluated. Results: In percentual, 52.63 % of

Cristián Taleb

327

PROPIEDADES ACIDAS DE LOS CATALIZADORES DE Pt-Sn\\/Al2O3 PREPARADOS POR SOL-GEL ACIDIC PROPERTIES OF Pt-Sn\\/Al2O3 SOL-GEL PREPARED CATALYSTS  

Microsoft Academic Search

The acid properties in sol-gel catalysts were studied. Tin-alumina catalysts were prepared by cogeltion of aluminium tri-sec-butoxide and tetra-butyltin, tetra-ter-amil-oxide tin or tin tetrachloride. Aqueous platinum solutions were used for impregnation. The results shown that the specific surface area and the acidity of the catalysts were only alightly modified by the metal precursors used. The solids prepared with tetrabutyltin showed

R. Silva-Rodrigo; T. López-Goerne; V. Bertin-Mardel; R. Gómez-Romero

2005-01-01

328

X-Ray Emission Through a Black Hole in Dense Clouds of Interstellar Medium Emissao de Raios-X Por Um Buraco Negro Em Uma Nuvem Densa Do Meio Interestelar.  

National Technical Information Service (NTIS)

A theoretical model is proposed for the emission of X-rays by a black hole in a dense cloud, immersed in a magnetic field. It is based on the Schwartzman model which considers synchrotron emission (the only relevant emission mechanism) by a black hole in ...

E. G. Desouza

1978-01-01

329

Relocalizaciones Involuntarias en Proyectos de Desarrollo: Lineamientos de Politicas a Ser Aplicadas en Proyectos Financiados por el Banco Mundial (Involuntary Resettlement in Development Projects: Policy Guidelines in World Bank-Financed Projects).  

National Technical Information Service (NTIS)

Development projects sometimes require that people be involuntarily resettled from areas where they live and work to other locations. Adequate policy and purposive implementation are necessary to minimize and reverse the negative effects of compulsory rel...

M. M. Cernea

1989-01-01

330

Determinacao simultanea de densidade e umidade de solos por atenuacao de raios gama do (sup 137) Cs e (sup 241) Am. (Simultaneous bulk density and soil moisture determination by attenuation of (sup 137) Cs and (sup 241) Am).  

National Technical Information Service (NTIS)

The method of simultaneous bulk density and soil moisture determination by attenuation of (sup 241) Am and (sup 137) Cs gamma-radiation is introduced and studied with detail. Theoretical considerations are made about the attenuation process in the absorbe...

E. S. Barros Ferraz

1974-01-01

331

Fatiga (PDQ®)  

Cancer.gov

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

332

Cuando se Tiene una Biopsia del Seno: Guia para las Mujeres y Sus Familias (Having a Breast Biopsy: A Guide for Women and Their Families).  

National Technical Information Service (NTIS)

This guide can help you talk with your doctor or nurse about breast biopsies. If you have a breast lump or a suspicious area on your mammogram, a breast biopsy tells if it is cancer. This guide talks about the different kinds of biopsies. It will tell you...

2010-01-01

333

DETECCIÓN DE UMBRALES DE ÁREA Y DISTANCIA DE AISLAMIENTO PARA LA OCUPACIÓN DE FRAGMENTOS DE SELVA POR MONOS AULLADORES, Alouatta palliata, EN LOS TUXTLAS, MÉXICO Detection of area thresholds and isolation distance for forest fragment occupation by howler monkeys, Alouatta palliata, in Los Tuxtlas, Mexico  

Microsoft Academic Search

Palabras clave: Alouatta palliata, fragmentación, Los Tuxtlas, México, ocupación de fragmentos, umbrales. ABSTRACT. Are there area thresholds and forest fragment isolation distances at which occupancy by howler monkeys decreases significantly? Are these thresholds similar independently of geographic location? To answer these questions we compared howler monkey populations in two landscapes with different degrees of loss and fragmentation in the tropical

S Mandujano; A Estrada

334

Los Hispanos: Problemas y Oportunidades. Resumen de la Actual Situacion Demografica, Economica, Social y Politica de los Hispanos en los Estados Unidos y de las Iniciativas Tomadas por la Fundacion Ford Para Hacer Frente a las Necesidades de esta Poblacion en Aumento y Determinar sus Efectos Sobre la Sociedad Estadounidense. Documento de Trabajo de la Fundacion Ford, No. 436.  

ERIC Educational Resources Information Center

The Hispanic population's growing impact on American society has caused the Ford Foundation to explore new Foundation initiatives. The 1980 census revealed 14.6 million Hispanics: 60% Mexican American; 14% Puerto Rican; 6% Cuban, and 20% Other. The Hispanic population in the United States is growing and is characterized by diversity; rapid growth…

Ford Foundation, New York, NY.

335

Avaliação das Características Mecânicas e Metalúrgicas de Metais de Solda Depositados por Eletrodos Revestidos da Classe ANSI\\/AWS A5.4-06 E309 (Mechanical and metallurgical evaluation of ANSI\\/AWS A5.4-06 E309 weld metals)  

Microsoft Academic Search

This study evaluated the mechanical properties of the weld metals of ANSI\\/AWS A5.4-06 E309 electrodes (309-16, 309L-15, 309L-16, 309Mo-16, 309MoL-15 and 309MoL-16), of three manufacturers available in the national market. Welding was conducted in plates of AISI 1020 steel in the fl at position. The plates were machined and buttering up in accordance with ANSI\\/AWS A5.4-06 standard. The welding parameters

Eduardo Aguiar; Lima Rodrigues; Alessandra Góis; Luciano de Azevedo; Cleiton Carvalho Silva; Jesualdo Pereira Farias

2008-01-01

336

Desaguamento de polpa kraft branqueada de fibra curta refinada: por gravidade, vacuo e centrifugacao com aplicacao de pressao Parte 2. Efeitos dos aditivos da parte umloa I Dewatering ofrefined, bleached hardwood kraft pulp by gravity, vacuum, and centrifugation with applied pressure  

Microsoft Academic Search

Several wet-end chemical additives significantly affected dewatering rates according to gravity drain­ age tests (freeness), the application ofvacuum, and a modified water retention value (MWR V) test. Relatively large increases in dewatering rates, including reductions in MWR V, were obtained hy addition ofhigh-charge synthetic cationic polymers to the pulp suspensions. Results were consistent with charge neutralization and polyelectrolyte complexation within

Mark Panczyk

337

Estandarizacion de un metodo de cuantificacion de azufre por fluorescencia de rayos X, en una solucion extractora de sulfato disponible en suelo. (Standardization of a sulfur quantitative analysis method by X ray fluorescence in a leaching solution for bio-available sulfates in soil).  

National Technical Information Service (NTIS)

A method for bio-available sulfate analysis in soils is described. A Ca(H2PO4) leaching solution was used for soil samples treatment. A standard NaSO4 solution was used for preparing a calibration curve and also the fundamental parameters method approach ...

E. Morales S E. Aguilar S

1989-01-01

338

Lesiones histológicas en músculo esquelético, causadas por larvas de Eustrongylides sp (Nematoda: Dictophymatidae) en ranas comestibles del Lago Cuitzeo, Michoacán, México Histological lesions in skeletal muscle, caused by Eustrongylides sp (Nematoda: Dictiophymatoidae) larvae in edible frogs from Lake Cuitzeo, in the state of Michoacan, in Mexico  

Microsoft Academic Search

The aim of the present study was to inform about the microscopic lesions caused by Eustrongylides sp in the skeletal muscle of frogs from Lake Cuitzeo, located in Michoacan, Mexico, given that it is considered to be a potentially zoonotic parasite. 146 frogs, from four species were studied: 80 from Rana megapoda, 43 from Rana dunni, 16 from Rana catesbiana

José Ramírez Lezama; David Osorio Sarabia

2002-01-01

339

Densidade de estados para o modelo de Anderson Bi-dimensional na presenca de um campo magnetico com meio quantum de fluxo por plaqueta. (Density of states for the Bi-dimensional Anderson model in the presence of a magnetic field with quantum plaque flux).  

National Technical Information Service (NTIS)

The regularity properties of the integrated density of states and the state density of the Anderson bidimensional tight-binding model, in the presence of a uniform magnetic field, perpendicular to the plane of the system by means of quantum flux with plaq...

N. M. Kuehl

1987-01-01

340

RESPOST A DE CUL TIVARES DE TRIGO AO NITROGÊNIO EM RELAÇÃO ÀS FONTES E ÉPOCAS DE APLICAÇÃO SOB PLANTIO DIRET O E IRRIGAÇÃO POR ASPERSÃO Response of wheat cultivars to nitrogen related to sources and application time under irrigation in no-tillage system  

Microsoft Academic Search

Nitrogen fertilization is very important to wheat crop, since nitrogen constitutes one of the most demanded nutrients by this crop, which yield is directly related to the amount of nutrients accumulated in the plant. Three nitrogen sources were tested at 70 kg N ha -1 : ammonium sulfonitrate with nitrification inhibitor, ammonium sulfate, and urea in two applications (at sowing

Márcio Mahmoud Megda; Salatiér Buzetti; Marcelo Andreotti; Marcelo Minhoto; Carvalho Teixeira; Michele Xavier Vieira

341

Comparação entre o resultado do tratamento clínico de pacientes com claudicação intermitente por obstrução femoropoplítea bilateral versus obstrução aórtica Comparison between the outcome assessment of the clinical treatment in patients with intermittent claudication due to bilateral femoropopliteal obstruction versus aortic obstruction  

Microsoft Academic Search

Objectives: Intermittent claudication is an early clinical manifestation of peripheral arterial occlusive disease. Its evolution is usually mild with clinical treatment. However, some patients do not show improvement in symptoms and may even deteriorate. The purpose of this study was to verify if there is any difference in the outcome assessment of the clinical treatment regarding the location of the

Manoel Augusto; Ruben Miguel; Ayzin Rosoky; Daniella Ferraro; Fernandes Costa; César Biselli Ferreira; Nelson Wolosker; Pedro Puech-Leão

342

Estudo de uma nova tecnica de introducao de amostras solidas combustiveis para determinacao de elementos volateis por espectrofotometria de absorcao-atomica com chama. (Study of new technique of solid combustible materials to determination of volatile elements by flame atomic absorption spectrophotometry).  

National Technical Information Service (NTIS)

A new technique for direct trace element analysis of solid combustible materials is described. The samples (up to 10 mg) are weighed on a graphite platform wich is then placed in a quartz tube, at the focal point of three infrared lamps. When the lamps ar...

R. C. Campos

1988-01-01

343

Concepción de mundo, aspectos contextuales y bienestar psicológico en chilenos supervivientes a experiencias de prisión y tortura por motivos políticos a más de 30 años de ocurridos los hechos* World Conception, Contextual Aspects, and Psychological Well-Being of Chilean Survivors of Political Torture and Imprisonment after more than 30 Years  

Microsoft Academic Search

a b S t r a c t The main objective of this article is to study the long-term psychological effects of imprisonment and torture experiences for political reasons in the world conception of a group of Chilean survivors. The design is a descriptive ex-post facto model, including qualitative methodology on content analysis, and QRS Nvivo6 and SPSS software. Results

344

Estudo sistematico dos campos hiperfinos em ligas de Heusler do tipo Rh(sub 2) YZ com impureza de (sup 119) Sn por espectroscopia Moessbauer. (Systematic study of hyperfine fields in Rh(sub 2) Y Z type Heusler alloys with (sup 119) Sn impurity using Moessbauer spectroscopy).  

National Technical Information Service (NTIS)

The magnetic hyperfine fields in the Heusler alloys Rh(sub 2) Mn (sub .98) Ge Sn (sub 02), Rh(sub 2) Mn Ge(sub .98) Sn(sub .02), Rh(sub 2) Mn Pb (sub .98) Sn (sub .02) and Rh(sub 2) Mn Sn has been studied by (sup 119) Sn Moessbauer spectroscopy at 293 K, ...

S. M. M. Ramos

1985-01-01

345

Estratificacao de Areas Desflorestadas Por Tipos de Vegetacao DA Amazonia, Utilizando Sistema de Informacoes Geograficas: Estudo de Caso NA Folha SB20 Purus (Stratification of Deforested Areas by Vegetation Types in Amazonia, Using Geographic Information Systems: Study of Case at SB20 Purus MAP).  

National Technical Information Service (NTIS)

A methodology to stratify deforested areas by Amazonia vegetation types, using geoprocessing techniques was tested for SB20 Purus map. The approach concerns the integration of different scales and projections data, so two datasets were considered: defores...

J. D. Deoliveira

1993-01-01

346

Aplicacion del analisis por activacion neutronica y la fluorescencia de rayos X en el estudio de la composicion elemental de Chenopodium Quinoa Willd. (Study of the elemental composition of Chenopodium Quinoa Willd by fast neutron activation analysis and X ray fluorescence analysis).  

National Technical Information Service (NTIS)

By means of x-ray fluorescence and fast neutron activation analysis the nitrogen content has been determined in samples of roots, stems, leaf, flowers and grains from Quinua (Chenopodium Quinoa Willd), which was previously treated with fertilizer. (Atomin...

R. L. Soto Moran S. Szegedi J. L. Llopiz

1996-01-01

347

Monitoracao ambiental (fase operacional) da Usina de Enriquecimento de Uranio Almirante Alvaro Alberto. Relatorio quadrimestral das medidas por espectroscopia gama: marco a junho de 1988. (Environmental monitoring (operational period) of the uranium enrichment facility Almirante Alvaro Alberto. Quadrimonthly report of gamma spectroscopy measurements: march to june 1988).  

National Technical Information Service (NTIS)

In this report we present the assessment of the environmental monitoring radiation levels during the operation period of the Uranium Enrichment Facility Almirante Alvaro Alberto from March to July 1988. The purpose was achieved by sampling and analyzing u...

L. Venturini B. R. S. Pecequilo

1990-01-01

348

Caracterizacao de filmes de GaAs e de hetero-estruturas GaAs-(AlGa)As por efeito Hall. (Characterization of GaAs and hetero-structures of GaAs-(AlGa)As films, by Hall effect).  

National Technical Information Service (NTIS)

Hall effect measurements were performed on a series of semiconductor gallium arsenide (GaAs) films, intentionally or unitentionally doped, grown by molecular beam epitaxy (MBE). These measurements made possible both the evaluation of the films quality and...

R. P. Diniz

1989-01-01

349

Estudio teorico para determinar el coeficiente de transferencia de calor por medio de una correlacion empirica en conveccion forzada a una sola fase, para canales anulares. (Theoretical study to determine the heat transfer by forced convection coefficient in an empirical correlation in single phase, for annular channels.).  

National Technical Information Service (NTIS)

In the heat transfer studies by forced convection, we have few data about behavior of the fluids in an annular channel heated by a concentric pipe, such date is necessary to know the heat transfer coefficient that establish the interchange of energy and t...

E. Herrera

1994-01-01

350

Reparabilidad durante G1 de las lesiones inductoras de intercambios entre cromatidas hermanas producidas por mitomicina C en celulas de la glandula salival de raton In vivo. (Repairability during G 1 phase of sister chromatid exchange-inducing lesions produced by mitomycin C in salivary gland cells of mice in vivo).  

National Technical Information Service (NTIS)

The repairability of the injuries that lead to the formation of sister chromatid exchange (SCE) produced by mitomycin C (MMC) with a dose of 2.1 mg/g in vivo, during the G 1 phase in the first cycle of cellular division (before the incorporation of BrdU (...

V. L. Cruz Vallejo

1991-01-01

351

Analise Multitemporal de Imagens Digitais Do Landsat TM NA Deteccao de Areas Afetadas Por Ataque de Lagartas (Sibine Fusca) NA Cultura de Dende (Elais Guineensis (Multitemporal Analysis of LANDSAT/TM Digital Imagery in the Detection of Areas Affected by Caterpillar (Sibine Fusca) Attack in the Dende (Elais Guineensis) Palm Plantation)).  

National Technical Information Service (NTIS)

The purpose was to detect the areas affected by caterpillars (Sibine fusca) attack in a dende palm plantation (Elais quineensis), through LANDSAT data multitemporal analysis. The test site was selected within Denpasa's farm (Dende do Para S.A.), located 4...

J. S. Demedeiros E. Eijisano

1989-01-01

352

FaCToReS aSoCIaDoS a La INFeSTaCIÓN INTRaDoMICILIaRIa PoR Aedes aegypti eN eL DISTRITo De TaMboGRaNDe, PIURa 2004  

Microsoft Academic Search

Objectives: To determine the associated factors to the intradomiciliary infestation for Ae. aegypti in Tambogrande district, Piura (Northern Coastal of Peru). Material and methods: We conducted a case control study in the capital of district of Tambogrande, in December of the 2004. We regarded as housing-case (Hc) to the positive housing for Ae. aegypti infestation, and control housing (Ho) to

Edwar J. Pozo; Miguel Neyra C; Ehunise Vílchez P; Mónica Meléndez M

353

Lo que los educadores necesitan saber sobre...El agrupamiento por habilidad [y] La compactacion del curriculum [y] Los alumnos dotados y el aprendizaje cooperativo [y] La actividad tutoral. Guias practica (What Educators Need To Know about...Ability Grouping [and] Curriculum Compacting [and] Gifted Students and Cooperative Learning [and] Mentoring. Practitioners' Guides).  

ERIC Educational Resources Information Center

These four pamphlets in Spanish offer guidelines supported by theory-driven quality research that is problem-based, practice-relevant, and consumer-oriented. Each pamphlet has a section summarizing research from the literature or topic notes as well as implications for the classroom. The first guide offers principles for teachers concerning the…

Siegle, Del, Ed.

354

A study on the stability of O{sub 2} on oxometalloporphyrins by the first principles calculations  

SciTech Connect

The authors investigated the interaction of oxometalloporphyrins (MO(por))--specifically, MoO(por), WO(por), TiO(por), VO(por), and CrO(por)--with O{sub 2} by using first principles calculations. MoO(por) and WO(por) undergo reactions with O{sub 2}; on the other hand, TiO(por), VO(por), and CrO(por) do not. Next, they compared the interaction of MoO(por) and WO(por) with O{sub 2}. Activation barriers for the reactions of MoO(por) and WO(por) with a side-on O{sub 2} are small. For MoO(por)(O{sub 2}), the activation barrier for the reverse reaction that liberates O{sub 2} is also small; however, that for WO(por)(O{sub 2}) is large. The experimental results that photoirradiation with visible light or heating of Mo {sup VI}O(tmp)(O{sub 2}) regenerates Mo {sup VI}O(tmp) by liberating O{sub 2} while W {sup VI}O(tmp)(O{sub 2}) does not [J. Tachibana, T. Imamura, and Y. Sasaki, Bull. Chem. Soc. Jpn. 71, 363 (1998)] are explained by the difference in activation barriers of the reverse reactions. This means that bonds formed between the W atom and O{sub 2} are stronger than those between the Mo atom and O{sub 2}. The bond strengths can be explained by differences in the energy levels between the highest occupied molecular orbital of MoO(por) and WO(por), which are mainly formed from the a orbitals of the central metal atom and {pi}{sup *} orbitals of O{sub 2}.

Kubota, Yoshiyuki; Escano, Mary Clare Sison; Dy, Eben Sy; Nakanishi, Hiroshi; Kasai, Hideaki [Department of Precision Science and Technology and Applied Physics, Osaka University, Suita, Osaka 565-0871 (Japan); Power Engineering Research and Development Center, Research and Development Department, Kansai Electric Power Co., Inc., Amagasaki, Hyogo 661-0974 (Japan); Department of Precision Science and Technology and Applied Physics, Osaka University, Suita, Osaka 565-0871 (Japan)

2007-05-21

355

A study on the stability of O2 on oxometalloporphyrins by the first principles calculations  

NASA Astrophysics Data System (ADS)

The authors investigated the interaction of oxometalloporphyrins (MO(por))-specifically, MoO(por), WO(por), TiO(por), VO(por), and CrO(por)-with O2 by using first principles calculations. MoO(por) and WO(por) undergo reactions with O2; on the other hand, TiO(por), VO(por), and CrO(por) do not. Next, they compared the interaction of MoO(por) and WO(por) with O2. Activation barriers for the reactions of MoO(por) and WO(por) with a side-on O2 are small. For MoO(por)(O2), the activation barrier for the reverse reaction that liberates O2 is also small; however, that for WO(por)(O2) is large. The experimental results that photoirradiation with visible light or heating of Mo VIO(tmp)(O2) regenerates Mo VIO(tmp) by liberating O2 while W VIO(tmp)(O2) does not [J. Tachibana, T. Imamura, and Y. Sasaki, Bull. Chem. Soc. Jpn. 71, 363 (1998)] are explained by the difference in activation barriers of the reverse reactions. This means that bonds formed between the W atom and O2 are stronger than those between the Mo atom and O2. The bond strengths can be explained by differences in the energy levels between the highest occupied molecular orbital of MoO(por) and WO(por), which are mainly formed from the a orbitals of the central metal atom and ?* orbitals of O2.

Kubota, Yoshiyuki; Escaño, Mary Clare Sison; Dy, Eben Sy; Nakanishi, Hiroshi; Kasai, Hideaki

2007-05-01

356

Evaluación de la toxicidad de sedimento y agua de mar contaminados por el vertido de fuel del Prestige, mediante el uso de bioensayos con las almejas Venerupis pullastra, Tappes decussatus y Venerupis rhomboideus y la microalga Skeletonema costatum Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum  

Microsoft Academic Search

In this study we present the early monitoring of the pollution caused by the accident of the Prestige tanker off the Galician coast. To evaluate the toxicity of sediment and water exposed to fuel, three kinds of bioassays were carried out using juvenile clams, clam embryos and microalgae. Firstly, the burrowing behaviour of Venerupis pullastra and Tappes decussatus in the

E. Fernández; R. Beiras

357

Fiscal Content of Financial Programs Supported by Stand-by Arrangements in the Upper Credit Tranches, 1969-78 (Objectifs de finances publiques des programmes financiers soutenus par des accords de confirmation portant sur les tranches de crédit supérieures, 1969-78) (Componentes fiscales de los programas financieros respaldados por acuerdos de derecho de giro en los tramos superiores de crédito, 1969-78)  

Microsoft Academic Search

The paper catalogs and analyzes the fiscal policy content of financial programs under the 105 stand-by arrangements in the upper credit tranches approved by the Fund's Executive Board in the ten years to 1978. A growing tendency toward use of a fiscal performance clause was observed, with the most usual clauses being the use of bank credit by the government

W. A. Beveridge; Margaret R. Kelly

1980-01-01

358

Avaliação do tratamento cirúrgico da cifose congênita na mielomeningocele com o uso da via posterior pela técnica de Dunn-McCarthy modificada Study of surgical treatment of congenital kyphosis in myelomeningocele by posterior approach with the modified Dunn-McCarthy technique Evaluación del tratamiento quirúrgico de la cifosis congénita en el mielomeningocele con el uso de la vía posterior por la técnica de Dunn-McCarthy modificada  

Microsoft Academic Search

Objective: to report the results in the treatment of congenital lombar kyphosis related to myelomeningocele with posterior spinal instrumentation and fusion. Methods: data analysis of 12 patients, with mean age of 8 years old treated by posterior approach and internal fixation with a Dunn-McCarthy procedure. Eight patients had implanted pedicular screws and in four were used sublaminar wires like Luques

Ricardo Correa; Ivan Guidolin Veiga; Wagner Pasqualini; Marcus Alexandre Mello Santos; Élcio Landim; Paulo Tadeu; Maia Cavali

360

Planificación de los cuidados de transición (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de la planificación de las transiciones según el grado de cuidados necesarios (por ejemplo, paciente hospitalizado a paciente ambulatorio) para pacientes con cáncer.

361

77 FR 1948 - Notice of Lodging of Consent Decree Under the Clean Water Act  

Federal Register 2010, 2011, 2012, 2013

...States of America v. International Hospitality Associates, S. en C. por A...Settling Defendants, International Hospitality Associates S. en C. Por A. (SE.) and International Hospitality Associates, Inc., for...

2012-01-12

362

La donación cadavérica y su repercusión en las familias donantes mexicanas  

Microsoft Academic Search

La muerte encefálica se asocia a donación de órganos. Sin embargo, las distintas repercusiones que este proceso tiene en las familias donantes no han sido bien estudiadas1. Por otro lado, tampoco sabemos hasta donde el diagnóstico de muerte encefálica es bien comprendido por los afectados. Por tal motivo desarrollamos este trabajo cuyo objetivo principal es censar las distintas afecciones que

Cruz Netza Cardoso; M. de la Luz Casas Martínez; Hugo Ramírez García

2010-01-01

363

Los servicios hidrológicos y la conservación de los bosques de México  

Microsoft Academic Search

RESUMEN El manejo de los recursos hídricos es uno de los retos ambientales más importantes que los seres humanos tendrán que enfrentar en este nuevo siglo. En México, una crisis severa causada por el mal manejo del agua está siendo acentuada por las altas tasas de deforestación y la pérdida de los servicios hidrológicos proporcionados por los bosques y selvas

Robert H. Manson

364

Una alternativa de reparto para la provisión de los servicios municipales mínimos y comunes: la participación incondicional municipal en los ingresos del gobierno superior  

Microsoft Academic Search

El trabajo presenta un modelo alternativo de reparto entre los municipios de un fondo público (financiado por la Generalitat Valenciana cumpliendo con el artículo 142 de la Constitución Española), de tal manera que las necesidades de todos ellos queden cubiertas por igual en términos relativos. Se defiende que el sistema de reparto, comparado con los propuestos por otros autores o

José Salvador Miñana Simó

1996-01-01

365

ANÁLISIS DE LAS ESTRATEGIAS DE GOBIERNO EN MATERIA TURÍSTICA IMPLEMENTADAS DESDE EL 2000 HASTA EL 2008 EN BENEFICIO DE CHETUMAL, Q. ROO  

Microsoft Academic Search

Este trabajo analizó y evaluó las estrategias de desarrollo turístico propuestas por los tres órdenes de gobierno y las sugeridas por organismos internacionales, durante los años 2000 - 2008 en beneficio de Chetumal, Q. Roo. Las estrategias de gobierno compiladas en Instrumentos de Planeación (IP), tienen por objeto ofrecer oportunidades de desarrollo para la ciudad de Chetumal, con proyección en

Edgar Manuel Gutiérrez García

2010-01-01

366

Eficacia y seguridad de la administración de hierro en poblaciones juveniles  

Microsoft Academic Search

ResumenLa anemia por carencia de hierro (ACH) del lactante reduce su capacidad cognitiva máxima de por vida y puede poner en riesgo la vida de una madre adolescente en el parto. La administración de hierro es un componente de las estrategias encaminadas a prevenir o invertir la carencia de hierro (CH), y el hierro puede administrarse por vía parenteral o

Klaus Schümann; Noel W. Solomons

2010-01-01

367

Scanning tunneling microscopy with chemically modified tips: discrimination of porphyrin centers based on metal coordination and hydrogen bond interactions.  

PubMed

STM gold tips chemically modified with 4-mercaptopyridine (4MP) were found capable of discriminating zinc(II) 5,15-bis(4-octadecyloxyphenyl)porphyrin (Por-Zn) from its metal-free porphyrin (Por-2H) and nickel(II) complexes (Por-Ni) in the mixed monolayers of these compounds, spontaneously formed at the solution/graphite interface. The porphyrin centers in STM images observed with 4MP-modified tips exhibited bright spots, while those measured with unmodified tips exhibited the porphyrin centers as dark depressions. The centers of Por-Zn were brighter than those of Por-2H and Por-Ni, thereby allowing the discrimination of Por-Zn from Por-2H or Por-Ni in mixed monolayers. The changes in the contrasts of porphyrin centers of Por-2H and Por-Zn/ Por-Ni were explained by facilitated electron tunneling due to hydrogen bond and metal coordination interactions, respectively, between porphyrin centers and the pyridyl group of 4MP on the tip. PMID:11289431

Ohshiro, T; Ito, T; Bühlmann, P; Umezawa, Y

2001-03-01

368

Rickettsial infection in capybaras (Hydrochoerus hydrochaeris) from São Paulo, Brazil: serological evidence for infection by Rickettsia bellii and Rickettsia parkeri  

Microsoft Academic Search

Introducción. En Brasil, los capibaras (Hydrochoerus hydrochaeris) son importantes huéspedes para garrapatas del género Amblyomma, las cuales transmiten rickettsiosis a humanos y animales. Por lo tanto, estos roedores pueden ser potenciales centinelas para detectar infección por rickettsia. Objetivos. Este trabajo evaluó la infección por rickettsia en capibaras de diferentes regiones del estado de São Paulo, donde las rickettsiosis nunca han

Richard C. Pacheco; Mauricio C. Horta; Jonas Moraes-Filho; Alexandre C. Ataliba; Adriano Pinter; Marcelo B. Labruna

2007-01-01

369

Zonas francas en Colombia: beneficios tributarios en el impuesto de renta  

Microsoft Academic Search

Este documento presenta la medición de los beneficios en el impuesto de renta otorgados a las empresas que operan en las zonas francas, los cuales están representados por una tarifa diferencial del 15% y, hasta el año 2010, por una deducción especial por inversión en activos fijos. Así mismo, el documento incluye el cálculo del aporte de estas empresas al

Jorge Ramos F; Karen Rodríguez Z

370

L'informatisation de l'« ancienne » économie : nouvelles machines, nouvelles organisations et nouveaux travailleurs  

Microsoft Academic Search

[spa] En 1997, todas las empresas industriales de más de 50 asalariados usan la informática, al menos en sus actividades de gestión. Este uso se diferencia por la intensidad del recurso a estas tecnologías, por la articulación de las configuraciones de aparatos en torno a un sistema central o, al contrario, a una red de microordenadores y por el papel

Michel Gollac; Nathalie Greenan; Sylvie Hamon-Cholet

2000-01-01

371

Sensitivity of porous silicon-ferromagnetic metal composites to molecular hydrogen adsorption  

NASA Astrophysics Data System (ADS)

The effect of molecular hydrogen adsorption on the current-voltage characteristics of structures based on porous silicon (por-Si) nanocomposites with nickel (por-Si-Ni) and cobalt (por-Si-Co) has been studied. The samples exhibit significant sensitivity to molecular hydrogen adsorption at a temperature of about 150°C. A model is proposed that explains the observed phenomena.

Antropov, I. M.; Demidovich, G. B.; Kozlov, S. N.

2012-05-01

372

Altered heme catabolism by heme oxygenase-1 caused by mutations in human NADPH cytochrome P450 reductase  

SciTech Connect

Research highlights: {yields} Mutations in POR identified from patients lead to reduced HO-1 activities. {yields} POR mutation Y181D affecting FMN binding results in total loss of HO-1 activity. {yields} POR mutations A287P, C569Y and V608F, lost 50-70% activity. {yields} Mutations in FAD binding domain, R457H, Y459H and V492E lost all HO-1 activity. {yields} POR polymorphisms P228L, R316W, G413S, A503V and G504R have normal activity. -- Abstract: Human heme oxygenase-1 (HO-1) carries out heme catabolism supported by electrons supplied from the NADPH through NADPH P450 reductase (POR, CPR). Previously we have shown that mutations in human POR cause a rare form of congenital adrenal hyperplasia. In this study, we have evaluated the effects of mutations in POR on HO-1 activity. We used purified preparations of wild type and mutant human POR and in vitro reconstitution with purified HO-1 to measure heme degradation in a coupled assay using biliverdin reductase. Here we show that mutations in POR found in patients may reduce HO-1 activity, potentially influencing heme catabolism in individuals carrying mutant POR alleles. POR mutants Y181D, A457H, Y459H, V492E and R616X had total loss of HO-1 activity, while POR mutations A287P, C569Y and V608F lost 50-70% activity. The POR variants P228L, R316W and G413S, A503V and G504R identified as polymorphs had close to WT activity. Loss of HO-1 activity may result in increased oxidative neurotoxicity, anemia, growth retardation and iron deposition. Further examination of patients affected with POR deficiency will be required to assess the metabolic effects of reduced HO-1 activity in affected individuals.

Pandey, Amit V., E-mail: amit@pandeylab.org [Pediatric Endocrinology, Diabetology and Metabolism, Department of Clinical Research, University of Bern, Tiefenaustrasse 120c, CH-3004 Bern (Switzerland); Flueck, Christa E.; Mullis, Primus E. [Pediatric Endocrinology, Diabetology and Metabolism, Department of Clinical Research, University of Bern, Tiefenaustrasse 120c, CH-3004 Bern (Switzerland)] [Pediatric Endocrinology, Diabetology and Metabolism, Department of Clinical Research, University of Bern, Tiefenaustrasse 120c, CH-3004 Bern (Switzerland)

2010-09-24

373

Facile synthesis and photophysical properties of sphere-square shape amphiphiles based on porphyrin-[60]fullerene conjugates.  

PubMed

Molecules constructed from a combination of zero-dimensional ([60]fullerene (C60)) and two-dimensional (porphyrin (Por)) nanobuilding blocks represent an intriguing category of sphere-square "shape amphiphiles". These sphere-square shape amphiphiles possess interesting optoelectronic properties. To efficiently synthesize a large variety of C60-Por shape amphiphiles, a facile route based on Steglich esterification was developed. The synthetic strategy enables the preparation of hydroxy-functionalized Por precursors (9-12) with high purity in a one-pot procedure. All of the C60-Por shape amphiphiles (1-5) can be readily synthesized in good yields through subsequent Steglich esterification with a highly soluble carboxylic acid derivative of methanofullerene (13). Photophysical studies indicated weak electronic coupling between the C60 and Por moieties and suggest an edge-to-face alignment for the moieties. The fluorescence of electronically excited Por portions of each amphiphile was efficiently quenched, which was indicative of electron transfer from (1)Por to the C60 group(s). Increasing the number of C60 groups on the shape amphiphiles led to more pronounced quenching of the Por fluorescence, which indicated the potential for more effective generation of charge-separated species, C60(-.)Por(+.), from the photoexcited C60-Por shape amphiphiles. PMID:23427219

Wang, Chien-Lung; Zhang, Wen-Bin; Yu, Xinfei; Yue, Kan; Sun, Hao-Jun; Hsu, Chih-Hao; Hsu, Chain-Shu; Joseph, Jojo; Modarelli, David A; Cheng, Stephen Z D

2013-05-01

374

Patterns of coral disease across the Hawaiian archipelago: relating disease to environment.  

PubMed

In Hawaii, coral reefs occur across a gradient of biological (host abundance), climatic (sea surface temperature anomalies) and anthropogenic conditions from the human-impacted reefs of the main Hawaiian Islands (MHI) to the pristine reefs of the northwestern Hawaiian Islands (NWHI). Coral disease surveys were conducted at 142 sites from across the Archipelago and disease patterns examined. Twelve diseases were recorded from three coral genera (Porites, Montipora, Acropora) with Porites having the highest prevalence. Porites growth anomalies (PorGAs) were significantly more prevalent within and indicative of reefs in the MHI and Porites trematodiasis (PorTrm) was significantly more prevalent within and indicative of reefs in the NWHI. Porites tissue loss syndrome (PorTLS) was also important in driving regional differences but that relationship was less clear. These results highlight the importance of understanding disease ecology when interpreting patterns of disease occurrence. PorTrm is caused by a parasitic flatworm that utilizes multiple hosts during its life cycle (fish, mollusk and coral). All three hosts must be present for the disease to occur and higher host abundance leads to higher disease prevalence. Thus, a high prevalence of PorTrm on Hawaiian reefs would be an indicator of a healthy coral reef ecosystem. In contrast, the high occurrence of PorGAs within the MHI suggests that PorGAs are related, directly or indirectly, to some environmental co-factor associated with increased human population sizes. Focusing on the three indicator diseases (PorGAs, PorTrm, PorTLS) we used statistical modeling to examine the underlying associations between disease prevalence and 14 different predictor variables (biotic and abiotic). All three diseases showed positive associations with host abundance and negative associations with thermal stress. The association with human population density differed among disease states with PorGAs showing a positive and PorTrm showing a negative association, but no significant explanatory power was offered for PorTLS. PMID:21655248

Aeby, Greta S; Williams, Gareth J; Franklin, Erik C; Kenyon, Jean; Cox, Evelyn F; Coles, Steve; Work, Thierry M

2011-01-01

375

Investigations of porous silicon with deposited 3D-metals by Auger- and ultrasoft X-ray emission spectroscopy.  

PubMed

Nanocomposites based on porous silicon (Por-Si) with 3d-metals incorporated into pores can be used as magnetics. Por-Si layers were obtained by anodic etching of n-type silicon (100) with the use of HF solution in alcohol. Fe, Co, Ni galvanic deposition in por-Si was made from aqueous solutions of corresponding sulphates. We have shown by USXES (Ultrasoft X-ray emission spectroscopy), and Auger spectroscopy that Fe covers the surface of porous silicon uniformly but Co penetrates into pores depth. And Ni nanoparticles similar to Co penetrate into pores depth. The obtained Auger profiles of por-Si(Fe), por-Si(Co), por-Si(Ni) nanocomposites shown that its surface layers (to 40 nm) contain up to 10% Fe and no more than 1% Co and Ni, testifying about Co and Ni penetration into silicon pores depth. PMID:23421291

Domashevskaya, E P; Lenshin, A S; Kashkarov, V M; Shabanova, I N; Terebova, N A

2012-11-01

376

Las formas circunscritas de histoplasmosis pulmonar (Histoplasmomas)  

Microsoft Academic Search

Resumen  Se refieren 12 casos de lesiones nodulares circunscritas del pulmón causados por elHistoplasma capsulatum (Histoplasmomas), obtenidos por resecciones pulmonares en personas de ambos sexos entre 10 y 72 años de edad. El diagnóstico\\u000a histo-patológico se realizó aplicando el método de coloración deGömöri modificado porGrocott.\\u000a \\u000a Las pruebas de sensibilidad cutáneas y serológicas resultaron positivas para histoplasmosis. Los cultivos de los especímenes

Alberto Angulo-Ortega

1961-01-01

377

P450 Oxidoreductase Deficiency: A Disorder of Steroidogenesis with Multiple Clinical Manifestations  

NSDL National Science Digital Library

Cytochrome P450 enzymes catalyze the biosynthesis of steroid hormones and metabolize drugs. There are seven human type I P450 enzymes in mitochondria and 50 type II enzymes in endoplasmic reticulum. Type II enzymes, including both drug-metabolizing and some steroidogenic enzymes, require electron donation from a two-flavin protein, P450 oxidoreductase (POR). Although knockout of the POR gene causes embryonic lethality in mice, we discovered human POR deficiency as a disorder of steroidogenesis associated with the Antley-Bixler skeletal malformation syndrome and found mild POR mutations in phenotypically normal adults with infertility. Assay results of mutant forms of POR using the traditional but nonphysiologic assay (reduction of cytochrome c) did not correlate with patient phenotypes; assays based on the 17,20 lyase activity of P450c17 (CYP17) correlated with clinical phenotypes. The POR sequence in 842 normal individuals revealed many polymorphisms; amino acid sequence variant A503V is encoded by ~28% of human alleles. POR A503V has about 60% of wild-type activity in assays with CYP17, CYP2D6, and CYP3A4, but nearly wild-type activity with P450c21, CYP1A2, and CYP2C19. Activity of a particular POR variant with one P450 enzyme will not predict its activity with another P450 enzyme: Each POR-P450 combination must be studied individually. Human POR transcription, initiated from an untranslated exon, is regulated by Smad3/4, thyroid receptors, and the transcription factor AP-2. A promoter polymorphism reduces transcription to 60% in liver cells and to 35% in adrenal cells. POR deficiency is a newly described disorder of steroidogenesis, and POR variants may account for some genetic variation in drug metabolism.

Walter L. Miller (San Francisco;University of California REV)

2012-10-23

378

Criptococosis en Venezuela  

Microsoft Academic Search

Resumen  En Venezuela se han diagnosticado 24 casos de Criptococosis de los cuales 21 han muerto por Meningo-encefalitis; los tres\\u000a restantes presentaron formas circunscritas pulmonares que fueron tratadas por lobectomía (2 viven en aparente buen estado\\u000a de salud después de varios años de la resección y el tercero murió por causas differentes a esta enfermedad).\\u000a \\u000a Entre esta estadística hay dos niños

Alberto Angulo-Ortega; César Rodríguez; Gustavo García Galindo

1961-01-01

379

Development of novel cell surface display in Corynebacterium glutamicum using porin.  

PubMed

We have developed a novel cell surface display in Corynebacterium glutamicum using porin proteins as anchor proteins. Porins are localized at C. glutamicum mycolic acid layer and exist as a hexamer. We used alpha-amylase from Streptococcus bovis 148 (AmyA) as a model protein to be displayed on the C. glutamicum cell surface. AmyA was fused to the C terminus of the porins PorB, PorC, or PorH. Expression vectors using fused proteins under the control of the cspB promoter were constructed and introduced into the C. glutamicum Cm strain. Immunostaining microscopy and flow cytometric analysis revealed that PorB-AmyA, PorC-AmyA, and PorH-AmyA were displayed on the C. glutamicum cell surface. AmyA activity was only detected in the cell fraction of C. glutamicum cells that displayed AmyA fused to PorB, PorC or PorH and AmyA activity was not detected in the supernatants of C. glutamicum culture broths after 72 h cultivation. Thus, we have demonstrated that C. glutamicum porins are very efficient anchor proteins for protein display in C. glutamicum. PMID:19430772

Tateno, Toshihiro; Hatada, Kazuki; Tanaka, Tsutomu; Fukuda, Hideki; Kondo, Akihiko

2009-09-01

380

Optical properties of porous silicon processed in tetraethyl orthosilicate  

NASA Astrophysics Data System (ADS)

We investigate the change in the composition and optical properties of porous silicon (por-Si) obtained by electrochemical etching of a palate made of n-type (111) silicon single crystal under high-temperature annealing and processing in tetraethyl orthosilicate (TEOS). It is shown that TEOS processing and annealing prevent contamination of a sample stored for a long time in atmosphere. The processing of por-Si in TEOS does not change the position of the photoluminescence (PL) peak and suppresses PL to a smaller extent as compared to annealing of por-Si. This increases the reliability of optoelectronic devices based on por-Si.

Len'shin, A. S.; Kashkarov, V. M.; Tsipenyuk, V. N.; Seredin, P. V.; Agapov, B. L.; Minakov, D. A.; Domashevskaya, E. P.

2013-02-01

381

Neoplasias mielodisplásicas o mieloproliferativas: Tratamiento (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca del tratamiento de las neoplasias mielodisplásicas o mieloproliferativas incluso las leucemias mielomonocíticas crónicas o juveniles y la LMC atípica.

382

Complicaciones gastrointestinales (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca del estreñimiento, impacción, obstrucción intestinal y diarrea como complicaciones del cáncer o su tratamiento. Se discute el manejo de estos problemas.

383

Neoplasias mielodisplásicas o mieloproliferativas: Tratamiento (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca del tratamiento de las neoplasias mielodisplásicas o mieloproliferativas, incluso las leucemias mielomonocíticas crónicas o juveniles, y la LMC atípica.

384

Inhibition of the alternative pathway of nonhuman infant complement by porin B2 contributes to virulence of Neisseria meningitidis in the infant rat model.  

PubMed

Neisseria meningitidis utilizes capsular polysaccharide, lipooligosaccharide (LOS) sialic acid, factor H binding protein (fHbp), and neisserial surface protein A (NspA) to regulate the alternative pathway (AP) of complement. Using meningococcal mutants that lacked all four of the above-mentioned molecules (quadruple mutants), we recently identified a role for PorB2 in attenuating the human AP; inhibition was mediated by human fH, a key downregulatory protein of the AP. Previous studies showed that fH downregulation of the AP via fHbp or NspA is specific for human fH. Here, we report that PorB2-expressing quadruple mutants also regulate the AP of baby rabbit and infant rat complement. Blocking a human fH binding region on PorB2 of the quadruple mutant of strain 4243 with a chimeric protein that comprised human fH domains 6 and 7 fused to murine IgG Fc enhanced AP-mediated baby rabbit C3 deposition, which provided evidence for an fH-dependent mechanism of nonhuman AP regulation by PorB2. Using isogenic mutants of strain H44/76 that differed only in their PorB molecules, we confirmed a role for PorB2 in resistance to killing by infant rat serum. The PorB2-expressing strain also caused higher levels of bacteremia in infant rats than its isogenic PorB3-expressing counterpart, thus providing a molecular basis for increased survival of PorB2 isolates in this model. These studies link PorB2 expression with infection of infant rats, which could inform the choice of meningococcal strains for use in animal models, and reveals, for the first time, that PorB2-expressing strains of N. meningitidis regulate the AP of baby rabbits and rats. PMID:24686052

Lewis, Lisa A; Vu, David M; Granoff, Dan M; Ram, Sanjay

2014-06-01

385

Valoración de impactos socio- ambientales del arbolado urbano: una aplicación a la ciudad de Santiago, Chile  

Microsoft Academic Search

Santiago de Chile es tercero en la lista de ciudades más contaminadas de Latinoamérica, después de Ciudad de México y Sao Paulo, por lo cual la valoración ambiental y social del arbolado urbano en este contexto es de vital importancia. Los proyectos de arbolado urbano ya sea en calles, plazas, parques u otras áreas verdes tienen como propósito, por una

Carmen L. De la Maz; Claudia L. Cerd

2009-01-01

386

El Balneario Marítimo como Espacio Utópico: los casos de Portmeirion (Gales), Thorpeness (Inglate rra), Pedernales (España) y Piriápolis (Uruguay)  

Microsoft Academic Search

(Estados Unidos). 1 Esta ponencia dirige la mirada a otro tipo de balneario marítimo, la pequeña colonia de vacaciones establecida por un empresario por motivos utópicos, tratando de construir un espacio de placer para llevar a habitantes y visitantes hacia un estado de perfecta tranquilidad y de aislamiento de los problemas del mundo exterior. Propongo un análisis comparativo de cuatro

Reino Unido

387

Obesidad y esteatohepatitis no alcohólica: su interrelación y estudio  

Microsoft Academic Search

La esteatohepatitis no alcohólica es una enti- dad caracterizada por cambios histológicos en el hígado debido al depósito de grasa, no aso- ciado al consumo de alcohol. En su evolución es una patología que puede progresar a cirrosis, por lo que es necesario establecer una terapéu- tica adecuada. Hasta el momento, los mayores beneficios se han obtenido a través del

Alfonso Soto González; Ana Prada Vigil; Manuel Delgado Blanco; Manuela Buño Soto; Diego Bellido Guerrero

388

El secuestro en Colombia: Caracterización y costos económicos  

Microsoft Academic Search

El delito del secuestro en Colombia ha presentado una tendencia creciente en la última década. Este instrumento de guerra utilizado por distintos actores armados, tiene un alto impacto en diversas esferas de la sociedad; pues se han visto implicados sectores económicos, sociales y políticos. Por ello, con el objetivo de mostrar este impacto y realizar una caracterización del secuestro, basados

María Eugenia PINTO BORREGO; Ivette María ALTAMAR CONSUEGRA; Yilberto LAHUERTA PERCIPIANO; Luis fernando CEPEDA ZULETA

2004-01-01

389

EVALUACIÓN DEL IMPACTO DE LA IMPLEMENTACIÓN DEL SISTEMA DE CUENTA ÚNICA EN EL MUNICIPIO JOBABO  

Microsoft Academic Search

Vivimos en un mundo caracterizado por una fuerte crisis económica en medio de la globalización que nos afecta. Nuestro país no está ajeno a esta situación, y a pesar de las medidas adoptadas para el control de la legalidad en aras de evitar violaciones y descontrol de los bienes materiales y financieros, el sistema contable sigue siendo afectado por lo

Maray Say Morales; Andrés Cabreja Espinosa; Adis Martha Exposito Caballero; Esmel Fernández Pérez; Daniel Esquivel Barreiro; Flora Margarita Escudero Samaniego

2011-01-01

390

Principales retos de la negociación de un tratado de libre comercio con Estados Unidos : disciplinas en materia de inversión  

Microsoft Academic Search

El Tratado de Libre Comercio de América del Norte (TLCAN) incluyó, por primera ocasión en un tratado de libre comercio (TLC), disciplinas de amplio alcance en materia de inversión, además de un mecanismo a través del cual un inversionista puede demandar a un Estado por violación del nivel de protección previsto en el acuerdo. El tema es una alta prioridad

Jaime Zabludovsky; Sergio Gómez Lora

2005-01-01

391

Los premiados con el nobel de economía, \\  

Microsoft Academic Search

Como docente en economía quiero hacer un breve y atrevido comentario. a raíz del otorgamiento del Premio Nobel de Economía 1993 a los profesores Douglas C. North y Robert W. Fogel de las Universidades de Washington (Sant Louis) y Chicago respectivamente, por sus investigaciones en el área de la Historia Económica. La primera opinión expresada por el profesor Douglas al

Hugo Silva S

1994-01-01

392

Evaluación y tratamiento de la fobia social en población infanto-juvenil de los países de habla española y portuguesa  

Microsoft Academic Search

La fobia social o trastorno de ansiedad social se define como un miedo intenso y duradero a una o más situaciones sociales en las que la persona se expone a ser observada por los demás y experimenta el temor de hacer algo o comportarse de una manera que resulte humillante o embarazosa. Se distingue de otros trastornos por el miedo

José Olivares Rodríguez

2009-01-01

393

ESTUDIO DE LA RESISTENCIA MECÁNICA Y LA TEXTURA DE LOS CAPARAZONES MINERALIZADOS DE BIVALVOS  

Microsoft Academic Search

RESUMEN Los caparazones de moluscos marinos se encuentran principalmente constituidos por variantes cristalinas del CO3Ca, aragonita o calcita, embebidas en un polímero biológico formando un bio-compuesto. La mineralización procede de una manera orientada y las texturas resultantes pueden ser medidas por técnicas usuales de difracción. Las mismas pueden incluso ser utilizadas como distintivas de un género o una especie. Esa

R. E. Bolmaro; P. Romano Trigueros; S. Zaefferer

394

Películas delgadas de CdS: Preparación y comparación de propiedades usando diferentes técnicas de depósito  

Microsoft Academic Search

Se depositaron películas delgadas de CdS sobre substratos de vidrio usando la técnica de depósito por baño químico en dos modalidades: agitando magnéticamente la solución del baño y vibrándola con frecuencias de ultrasonido, así como por la técnica de sublimación en espacio cerrado. Se comparan las propiedades encontradas en este material mediante el estudio de su morfología, su estructura cristalina,

A. I. Oliva; O. Solis-Canto; R. Castro-Rodríguez; Víctor Sos; P. Quintana

395

Hacia un framework Orientado a Objetos para Bills of Materials Complejos  

Microsoft Academic Search

Las empresas de producción industrial se enfrentan por un lado, a los cambios constantes de las condiciones del mercado, como po r ejemplo, los patrones de demanda, ciclo de vida de los productos mucho más cortos, etc. Por otro, a un mercado global, que requiere que la cadena de suministros, alcance muy altos niveles de eficiencia. Para mantener la competitividad

Marcela Vegetti; Gabriela Henning; Horacio Leone

396

Amenazas comerciales del Acuerdo Can-Mercosur para los sectores productivos del Valle del Cauca  

Microsoft Academic Search

El Acuerdo de Complementación Económica, suscrito entre la Comunidad Andina (CAN) y el Mercado Común del Sur (MERCOSUR), marca un avance hacia una integración económica y política más profunda en América Latina. Por tal razón, el objetivo del presente artículo es identificar los sectores del Valle del Cauca que revelan desventajas competitivas relativas, por lo que se pueden ver potencialmente

Lya Paola Sierra Suárez; José Tomás Peláez Soto

2008-01-01

397

Naturally occurring isolates of Neisseria gonorrhoea, which display anomalous serovar properties, express PIA\\/PIB hybrid porins, deletions in PIB or novel PIA molecules  

Microsoft Academic Search

The por gene of Neisseria gonorrhoeae encodes the Protein I porin responsible for serovar specificity. In this study the por genes have been sequenced from clinical isolates which exhibited anomalous serovar reactivity. One group of `intermediate' strains differed significantly from both Protein IA and IB strains, were more closely related to IA but appeared to represent a distinct class of

Susan J Cooke; Keith Jolley; Catherine A Ison; Hugh Young; John E Heckels

1998-01-01

398

MEJORA DEL COMPORTAMIENTO A CORROSIÓN BAJO TENSIÓN DE LOS ALAMBRES DE PRETENSADO  

Microsoft Academic Search

Resumen. La corrosión bajo tensión de las armaduras activas está generando problemas de durabilidad en las estructuras pretensadas construidas en la proximidad de ambientes agresivos. En este trabajo se pone de manifiesto la influencia que tienen las tensiones residuales producidas por el proceso de conformado (trefilado) en la fragilización por hidrógeno de los alambres y se propone un tratamiento alternativo

J. M. Atienza; J. Ruiz-Hervías; L. Caballero; M. Elices

399

Determinantes del precio de la vivienda en Santiago: Una estimación hedónica  

Microsoft Academic Search

Siguiendo la tradición de una extensa literatura de la economía urbana, desarrollada a partir de la base teórica propuesta por Rosen (1974), aquí se utiliza un modelo de precios hedónicos para analizar la determinación del precio de la vivienda (casas) en el mercado de Santiago. La estimación empírica del modelo permite explicar sobre el 70 por ciento de la varianza

Eugenio Figueroa; George Lever

400

La promoción inmobiliaria y el turismo residencial: el caso mexicano  

Microsoft Academic Search

El turismo residencial ha sido poco estudiado en México. Aun con porcentajes de viviendas de uso temporal muy inferiores a los países europeos, representan un mercado importante. Los tipos de vivienda usada para segundas residencias son variados, destacando la vivienda individual producida directamente por el dueño. Por la modernización del sector de la construcción y la flexibilización social y territorial

Daniel Hiernaux Nicolas

2007-01-01

401

Retornos e Riscos das Ações de Valor e de Crescimento no Mercado Brasileiro no Período de Janeiro de 2001 a Junho de 2004, com Base no Índice IBrX 50  

Microsoft Academic Search

Resumo A avaliação e estudo das carteiras compostas por ações do tipo valor (ações com alta relação livro-mercado) e ações do tipo crescimento (ações com baixa relação livro-mercado), pode representar um fator decisivo para obtenção de retornos financeiros superiores. Assim como já analisado e estudado em mercados internacionais, buscamos constatar no mercado brasileiro que carteiras compostas por ações do tipo

EMERSON BAZILIO PEDREIRA

2004-01-01

402

Estudio de los efectos de la ayuda al desarrollo sobre el comportamiento fiscal de los gobiernos en Centroamérica  

Microsoft Academic Search

Desde su aparición, el papel y la efectividad de la ayuda al desarrollo ha sido una cuestión muy debatida tanto por la comunidad científica como por otras esferas de la sociedad, políticos, técnicos y evidentemente, la población civil. Pese al notable descenso en los flujos de ayuda internacional durante la última década del siglo pasado, esta vía de financiación sigue

Mariola Gozalo Delgado

2006-01-01

403

Ajuste estructural y mercado del trabajo: Nigeria después de la crisis del petróleo  

Microsoft Academic Search

En este artículo examinamos la experiencia de Nigeria durante la crisis petrolera de los años 1980 y el comienzo de la aplicación de un paquete de ajuste estructural. Nuestro análisis se concentra en el rol jugado por el mercado del trabajo, particularmente en relación a la situación de empleo y desempleo, como también a los flujos migratorios despertados por la

Paul Collier; Luis Riveros

404

Control a los flujos de capital y credibilidad en el Gobierno  

Microsoft Academic Search

El control a los flujos de capitales es un instrumento utilizado en varios países. Estos, generalmente, se caracterizan por tener un desempeño macroeconómico inestable. En este trabajo se presenta un modelo teórico que busca explicar dicha situación. La restricción a la movilidad de capitales genera distorsiones macroeconómicas, las cuales siempre tienen costos para el país. Por su parte, los beneficios

Alberto Calderón

1990-01-01

405

Reflexiones sobre el buen gobierno corporativo en las empresas periodõ ´sticas  

Microsoft Academic Search

Resumen: El interes por el gobierno corporativo en las empresas informativas no es un tema nuevo, pero ha adquirido singular relevancia en los ultimos anos, como resultado de las transformaciones que se han vivido en los esquemas de propiedad y de gestion de las compan ˜õ ´as. En este artõ ´culo se trata de explicar por quela naturaleza de los

Angel Arrese

406

¿Es la Ocratoxina A una micotoxina mutagénica?  

Microsoft Academic Search

Resumen: La ocratoxina A es una micotoxina producida por especies de los géneros Aspergillus y Penicillium que a través de los alimentos puede pasar al ser humano. Su órgano diana es el riñón pero también es hepatotóxica, inmunotóxica y teratogéni- ca. Ha sido clasificada por la Agencia Internacional de Investigación contra el Cáncer (IARC) como posible carcinóge- no humano (clase

Arbillaga L; López de Cerain

2004-01-01

407

Priming morfológico: algo más que priming ortográfico  

Microsoft Academic Search

Los resultados de investigaciones recientes en reconocimiento visual de palabras apoyan cierta autonomía de las unidades morfológicas. Con el fin de investigar si los efectos de priming morfológico están producidos más por el solapamiento de forma que por las relaciones morfológicas de las palabras, se presenta un experimento de decisión léxica con priming enmascarado. Se comparan, mediante la utilización de

Jon Andoni Duñabeitia; Manuel Perea Lara; Eva Gutiérrez Pérez; Yaiza Mena Monzó; Manuel Carreiras

2007-01-01

408

Valoración De La Multifuncionalidad Agraria: Una Aplicación A Través Del Método De Los Experimentos De Elección\\/Agricultural Multifunctionality Valuation: A Case Study Using The Choice Experiment  

Microsoft Academic Search

La multifuncionalidad agraria es el reconocimiento del ejercicio conjunto por parte de este sector de funciones económicas, ambientales y sociales. Sin embargo, no todas estas aportaciones al conjunto de sociedad son valoradas en los mercados, sino que buena parte de ellas son bienes públicos. Por este motivo, para que este concepto de multifuncionalidad pueda utilizarse operativamente en el diseño de

Z. KALLAS; J. A. GÓMEZ-LIMÓN

2007-01-01

409

Cinq esquisses de croissance pour 1985  

Microsoft Academic Search

[spa] Cinco bosquejos sobre crecimiento para 1985 s por Edgar ANDREANI y André GAURON. . La Division de Programas del I.N.S.E.E. ha realizado cinco bosquejos sobre crecimiento para 1985, los cuales intentan caracterizar diversos tipos de evolución económica por medio de un conjunto relativamente limitado de magnitudes : parte de la inversion y del consumo, parte del consumo colectivo y

André Gauron; Edgar Andréani

1970-01-01

410

Estudio de los Institutos Nacionales de la Salud indica que quienes toman café tienen un riesgo menor de muerte  

Cancer.gov

Los adultos mayores que tomaron café, con o sin cafeína, tuvieron un riesgo menor de muerte en general que quienes no tomaron café, según un estudio llevado a cabo por investigadores del Instituto Nacional del Cáncer (NCI), parte de los Institutos Nacionales de la Salud, y por la Asociación Estadounidense de Personas Jubiladas (AARP).

411

Un estudio indica que la sigmoidoscopia reduce los índices de cáncer colorrectal  

Cancer.gov

Estudio señala que la sigmoidoscopia flexible es efectiva para reducir los índices de casos nuevos y de muertes por cáncer colorrectal. Los investigadores encontraron que la mortalidad general por cáncer colorrectal se redujo 26% y que la incidencia se redujo 21% como resultado de hacerse exámenes de detección con sigmoidoscopia.

412

Carencia de hierro en la infancia: Causas y consecuencias para el desarrollo infantil  

Microsoft Academic Search

ResumenSe comentan brevemente las causas principales de la carencia de hierro (CH), seguido de un examen de los estudios sobre la CH y el desarrollo y comportamiento cognitivos y motores del niño para probar un vínculo causal, clasificando dichos estudios por su diseño. La anemia por carencia de hierro (ACH) se asocia a numerosos inconvenientes psicosociales y económicos que pueden

Sally Grantham-McGregor; Helen Baker-Henningham

2010-01-01

413

LOS ESTEREOTIPOS SOCIALES  

Microsoft Academic Search

Cuando una mujer se queda embarazada, es habitual escuchar cómo se le pregunta si sabe si será niño o niña. Es como si todo lo que un embarazo conlleva, se redujera a esa cuestión, considerada como lo crucial, lo más importante. Y nos preguntamos, ¿ por qué necesitamos saber el sexo del bebé?, ¿no es más importante preguntar por la

Nuria María Palanco López

2009-01-01

414

Conocimientos maternos sobre signos de peligro en diarrea aguda en el marco de la estrategia AIEPI  

Microsoft Academic Search

de hidratación. Métodos: Estudio descriptivo por medio de una encuesta. Se aplicó un instrumento de investigaciones operativas de AIEPI, a 204 cuidadores elegidos consecutivamente que asistieron por primera vez a la consulta de crecimiento y desarrollo de un hospital de nivel I en Popayán, Colombia. Se midieron variables: edad materna, sexo, edad del niño, área (rural-urbana), estrato socioeconómico, vínculo al

MARIO FRANCISCO DELGADO; CARLOS HERNÁN S IERRA; JOSÉ ANDRÉS CALVACHE; ÁNGELA MARÍA RÍOS; CATALINA MOSQUERA; INGRID SALAS; FRANCISCO AGREDO; RUBIEL MENESES

2006-01-01

415

Trois mesures de l'évolution de la rentabilité de 1966 à 1972  

Microsoft Academic Search

[spa] El definir la rentabilidad capitalistica noes cosa evidente de por sí. Puede relatar el beneficio bruto al capital fijo inmovilizado, lo cual encarrila a una noción de rendimiento económico de las inmovilizaciones. Desde el punto de vista fmanciero, es factibte interesarse a la rentabilidad de los unicos capitales invetidos por los accionistas de la empresa, orsea capitales propios. En

Edgard Cohen-Skalli

1974-01-01

416

Sistema de Web Mapping para Geologia Médica  

Microsoft Academic Search

Resumo - Este trabalho apresenta um sistema de Web Mapping para pesquisa em Geologia Médica, no qual, por meio de uma navegação em mapas interativos, epidemiologistas visualizam as distribuições espaciais de teores de elementos químicos em águas não tratadas (bacias hidrográficas) e dos coeficientes de morbi-mortalidade por doenças nos municípios. A sobreposição desses temas compõe um mapa onde se podem

Humberto Cereser Ibañez; Marilea Vieira de Camargo; Hélio Pedrini

417

HISTERECTOMÍA: UNA MIRADA DESDE EL SUELO PÉLVICO  

Microsoft Academic Search

RESUMEN La histerectomía constituye la segunda cirugía más efectuada en mujeres en edad fértil. Por esto cada día más ginecólogos se interesan en buscar técnicas de menor invasión. Dentro de este concepto y con el objetivo de preservar la indemnidad del suelo pélvico, muchos hemos propuesto la histerectomía supracervical por laparoscopía, como una de las técnicas quirúrgicas que más auge

2006-01-01

418

REFLUXO GASTROESOFÁGICO NO PACIENTE ENCEFALOPATA GASTROESOPHAGEAL REFLUX IN THE NEUROLOGICALLY IMPAIRED PATIENT  

Microsoft Academic Search

O estudo da doença do refluxo gastroesofágico (DRGE) é cercado de controvérsia na criança, principal- mente devido às dificuldades para diferenciar doença e imaturidade. O refluxo de conteúdo gástrico ao esôfago em menores de quatro meses de idade é fisiológico, cau- sado por imaturidade e não por disfunção patológica do mecanismo de contenção da junção esofagogástrica (JEG)1, o que não

Lisieux Eyer de Jesus

419

Ponencia MicrAS : UNA EXPERIENCIA DE CAMBIO DE PARADIGMAS EN ECONOMÍA CON MICROMUNDOS DESARROLLADOS CON DINÁMICA DE SISTEMAS  

Microsoft Academic Search

RESUMEN La crisis generalizada a que nos vemos abocados parece obedecer en g ran parte a las múltiples deficiencias que presenta por un lado el sistema educativo y por otro la teoría económica, esto se refleja en el comportamiento del sistema económico sometido a la aplicación de políticas que pretenden dar solución a problemas de una gran complejidad. Una alternativa

HUGO H. ANDRADE; ADRIANA R. LIZCANO; ELIÉCER PINEDA

420

Enfoques de Medición de Riesgo Operacional en la Banca An Anvanced Approach for Measuring Operational Risk  

Microsoft Academic Search

RESUMEN. Una de las principales novedades que recoge el Acuerdo de Basilea II, publicado en junio de 2004, es la inclusión de requerimientos de capital regulatorio por riesgo operacional, uniéndose así a los ya contemplados en Basilea I sobre el riesgo de crédito y de mercado. En esta línea, el trabajo que presentamos tiene por objetivo realizar una revisión analítica

José M. Feria; José L. Martín

2008-01-01

421

Evolución y perspectivas de las economías emergentes de Asia Oriental diez años después de la crisis de 1997  

Microsoft Academic Search

Este artículo analiza la evolución de las economías más afectadas por la crisis de 1997: en Tailandia, Indonesia, Malasia, Filipinas y Corea del Sur, en los últimos diez años. Hoy el conjunto de países más afectados por aquel episodio se han re- cuperado plenamente y presentan una situación mucho más sólida. El sis- tema bancario ha sido saneado, las empresas

Joan Ripoll

422

Art, gender, and sexuality: New readings of Cernuda's later Poetry  

Microsoft Academic Search

Uno de los objetivos programáticos del nuevo hispanismo británico consiste en someter los textos clásicos a nuevas lecturas apoyadas en presupuestos teóricos fermentados en el populoso y abigarrado solar de los Cultural Studies, con preferencia por aquellas corrientes que el hispanismo tradicional ha preferido ignorar. Los análisis de la identidad, comenzando por una crítica de sus mismas condiciones de existencia

Alfredo Martínez

2004-01-01

423

La contradicción entre identidad vivida e identificación jurídico-política  

Microsoft Academic Search

Este artículo quiere llamar la atención de los antropólogos españoles sobre una contradicción implícita, por no decir sepultada, en los discursos sobre la identidad. Se trata de la contradicción entre la identidad como expresión de lo vivido y la identidad como quimera, y a la vez, estigma clasificatorio. Si bien, varias opiniones tratan de hacer pasar lo segundo por lo

Ignasi Terradas i Saborit

2004-01-01

424

COMO ENTENDER LOS ESTANDARES INTERNACIONALES DE INFORMACIÒN FINANCIERA  

Microsoft Academic Search

RESUMEN Cada día que pasa, más países, más profesionales y más empresarios en el contexto global se interesan, estudian y aplican estándares internacionales de información financiera. En Colombia, estudiantes, profesores, profesionales y empresarios, también han venido acercándose al tema, muchos de ellos por necesidad, otros por curiosidad y otros para poder participar en las continuas disertaciones y confrontaciones que se

Helio Fabio Ramirez Echeverry; Luis eduardo Suarez Balaguera

2010-01-01

425

El cuento del cáncer de cérvix podría tener un final feliz  

Cancer.gov

El cuento del cáncer de cérvix podría tener un final feliz Por el Instituto Nacional del Cáncer El cáncer de cérvix fue en un tiempo la causa principal de muerte por cáncer entre mujeres estadounidenses. Pero, en los últimos 50 años, el número de

426

SILICA DIAGENESIS AND POROSITY PRESERVATION IN DEVONIAN RESERVOIRS FROM THE SOLIMÕES BASIN, NORTHERN BRAZIL  

Microsoft Academic Search

Resumo - Arenitos devonianos marinhos rasos da Formação Uerê são impotantes prospectos de óleo na Bacia do Solimões, Amazônia ocidental.Os reservatórios são arenitos progradacionais com contatos basais abruptos, depositados em um complexo de plataforma dominado por tempestades, e recobertos por folhelhos pretos de Frasniano- Fameniano que são as rochas geradoras de petróleo da bacia. Concentrações de espículas de esponjas ocorrem

Rodrigo Dias Lima; Luiz Fernando De Ros

427

DISEÑO E IMPLEMENTACIÓN ÓPTIMA DE PERIFÉRICOS DE DSP CON SYSTEM GENERATOR PARA MICROBLAZE  

Microsoft Academic Search

Con este trabajo pretendemos analizar como se lleva a cabo el diseño de periféricos de DSP utilizando uno de los nuevos entornos de diseño de alto nivel: System Generator for DSP. Así, en este documento el objetivo es mostrar por un lado las características del entorno de diseño y las herramientas utilizadas y por otro la metodología de diseño e

J. Viejo; E. Ostua; M. J. Bellido; J. Juan; A. Millan; P. Ruiz-de-Clavijo; D. Guerrero

428

habitat de Nocardia asteroides, Phialophora pedrosoi y Cryptococcus neoformans en Venezuela  

Microsoft Academic Search

Resumen Se estudiaron 336 muestras de tierra, madera y plantas provenientes de diferentes zonas del Edo. Mérida\\/Venezuela y Estados vecinos. Fueron inoculados cobayos y hamsters intratesticularmente y ratones por via endovenosa. Testículos y pulmones respectivamente fueron examinados por medio de cultivos e histológicamente.

K. Salfelder; J. Schwarz; A. Romero; T. R. de Liscano; Z. P. Zambrano; I. P. Diaz

1968-01-01

429

¿SON EFECTIVOS LOS CONSEJOS DE ADMINISTRACIÓN? LA EFICACIA DEL CONSEJO Y LOS RESULTADOS DE LA EMPRESA \\/ ARE THE BOARDS OF DIRECTORS EFFECTIVE? THE BOARD’S EFFICIENCY AND THE FINANCIAL PERFORMANCE OF THE COMPANY  

Microsoft Academic Search

Numerosos trabajos han estudiado la influencia del consejo de administración en las decisiones y resultados de sus empresas. No obstante, la enorme popularidad alcanzada en el campo del gobierno corporativo por estos estudios, no viene acompañada por sus resultados, que han sido ambiguos y, a veces, conflictivos En esta investigación proponemos que la efectividad de los consejos depende de las

C. Barroso Castro; M. M. Villegas Periñan; L. Pérez-Calero

2010-01-01

430

A spring stopover of a migratory osprey (Pandion haliaetus) in northern Spain as revealed by satellite tracking: implications for conservation  

Microsoft Academic Search

Actualmente, la mayor precisión de las localizaciones suministradas por la telemetría vía satélite permite llevar a cabo estudios más detallados sobre la migración, que pueden ser útiles para la conservación de las aves. En este trabajo describimos el comportamiento de una hembra adulta de águila pescadora seguida por telemetría vía satélite en la Reserva de la Biosfera de Urdaibai (N

Aitor Galarza; R. H. Dennis

2009-01-01

431

Arjunolic acid in the ethanolic extract of Combretum leprosum root and its use as a potential multi-functional phytomedicine and drug for neurodegenerative disorders: anti-inflammatory and anticholinesterasic activities  

Microsoft Academic Search

Os extratos etanólicos das folhas e raízes de Combretum leprosum Mart. & Eicher (Combretaceae) foram investigados por CGAR-EM, após derivatização com BSTFA\\/ TMCS. Mono e oligossacarídeos, ácidos graxos e triterpenos foram identificados como componentes majoritários. Análise quantitativa por padronização externa revelou a presença de 65% de ácido arjunólico (1) no extrato etanólico das raízes secas. Foram observadas atividades anti-inflamatória, antinociceptiva

Valdir A. Facundo; Katiúscia A. Rios; Ciléia M. Medeiros; Júlio S. L. T. Militão; Ana Luisa; P. Miranda; A. Epifanio; Meriane P. Carvalho; Aline T. Andrade; Angelo C. Pinto

2005-01-01

432

Base-promoted aryl-bromine bond cleavage with cobalt(II) porphyrins via a halogen atom transfer mechanism.  

PubMed

Aryl-bromine bonds are successfully cleaved by cobalt(II) porphyrins in basic media to give Co(por)Ar (por = porphyrin) in good yields. Mechanistic studies suggested that the aryl-bromine bond is cleaved through a halogen atom transfer mechanism, which is different from the aryl-halogen bond cleavage mechanism with other group 9 metalloporphyrins. PMID:24699823

Liu, Chun Ran; Qian, Ying Ying; Chan, Kin Shing

2014-06-01

433

NCI en el congreso de ASCO: Breve reseña de los resultados de investigaciones sobre cánceres en mujeres  

Cancer.gov

En el congreso anual de la Sociedad Americana de Oncología Clínica (ASCO) 2014 celebrado en junio en Chicago, se destacaron los resultados de varios estudios clínicos patrocinados por el NCI sobre cánceres en la mujer. En su conjunto, estos resultados representan avances importantes en nuestra comprensión de cómo tratar estas enfermedades y mejorar las vidas de quienes se ven afectadas por ellas.

434

Comparison of different ovarian hyperstimulation protocols efficacy in poor ovarian responders according to the Bologna criteria  

PubMed Central

Many protocols have been proposed to improve IVF outcomes for poor ovarian responders. The aim of this study was to explore the relationship between age, ovarian hyperstimulation protocol and IVF/ICSI outcomes in poor ovarian responder (POR) according to the Bologna criteria, and to compare the efficacy of different protocols used in PORs undergoing IVF/ICSI. We retrospectively analyzed clinical data of 4875 IVF/ICSI cycles, including 592 cycles of women diagnosed with POR according to Bologna criteria. We explored the association of age, different types of ovarian hyperstimulation protocols and prevalence of POR, IVF/ICSI outcomes. Age, basic FSH, AFC, and as well as ovarian hyperstimulation protocols, were all associated with POR. Irrespective of age, PORs in different ovarian hyperstimulation protocol groups had similar AFC, basic sex hormones, number of retrieved oocyte, implantation rate and clinical pregnancy rate as well. However, PORs treated with mild stimulation protocol used least doses of gonadotropins and shortest days of stimulation compared with those treated with other protocols (P<.05). The current study has shown that age, basic FSH, AFC and ovarian stimulation protocols patients used are all significantly associated with POR according to the Bologna criteria. It seems that there is no difference in clinical outcomes such as clinical pregnancy rate, implantation rate and spontaneous abortion rate between different protocols.

Hu, Linli; Bu, Zhiqin; Guo, Yihong; Su, Yingchun; Zhai, Jun; Sun, Yingpu

2014-01-01

435

75 FR 5763 - Certain Non-Frozen Apple Juice Concentrate from the People's Republic of China: Initiation of...  

Federal Register 2010, 2011, 2012, 2013

...Apple Juice Concentrate from the People's Republic of China: Initiation...apple juice'') from the People's Republic of China...of that POR. The Department finds that extending the POR to capture...Apple Juice Concentrate from the People's Republic of China...

2010-02-04

436

Analisis de disponibilidad de infraestructura y acceso a las tecnologias de la informacion (TIC) en America Latina  

Microsoft Academic Search

Los paises desarrollados han tenido mas acceso a la economia del conocimiento surgida por la amplia utilizacion de las tecnologias de la informacion y la comunicacion (tic) en las actividades productivas. Los paises de America Latina afrontan la llamada “brecha digital”, aun cuando han tenido avances importantes en el intento por articularse a los circuitos mundiales economicos y de informacion;

Raul Ernesto Acosta Mesa

2009-01-01

437

LA CIENCIA CIBERNÉTICA. LA GESTIÓN DE GOBIERNO Y EL MEDIO AMBIENTE  

Microsoft Academic Search

Desagregación del Universo: Al Universo, el mayor sistema material, se lo puede considerar integrado por un conjunto de partes diferenciadas menores. Luego, cada una de esas partes diferenciadas menores, podrían ser reconocidas a su vez como conjuntos integrados por otras porciones diferenciadas menores aún... Y así sucesivamente, hasta el límite de la desagregación del Universo en el conjunto de todos

Jorge Marcelo Ferro

2007-01-01

438

Las certificaciones ISO 9001\\/2000 e ISO 14001\\/96 en Colombia  

Microsoft Academic Search

Las certificaciones en sistemas de gestión de la calidad NTC ISO 9001\\/2000 y sistemas de gestión ambiental NTC ISO 14001\\/96, se han convertido en una prioridad para muchas organizaciones por las exigencias del mercado. Se presentan los resultados de un análisis cuantitativo de las empresas públicas y privadas del país que han optado por la certificación en sistemas de gestión

Clara Inés Pardo Martínez

2006-01-01

439

Diseño del saneamiento de Urdaibai (País Vasco) bajo una perspectiva de preservación ambiental del litoral  

Microsoft Academic Search

Los sistemas de saneamiento unitarios, del mismo modo que cualquier obra de infraestructura dispuesta a soportar fenómenos naturales, pre- sentan, inevitablemente, una determinada probabilidad de fallo, igual, a la de que los efectos producidos por estos superen a los considerados en su diseño. Por tanto, el comportamiento general de los mismos sólo puede evaluarse en términos probabilísticos. Siendo la lluvia

ANDRÉS GARCÍA; KALIN N. KOEV; JOSÉ A. REVILLA; JOSÉ A. JUANES

440

Coordinación de los sistemas de gestión de calidad, medio ambiente y salud laboral  

Microsoft Academic Search

La aparición sucesiva de los tres sistemas de gestión mencionados en el título, junto con los diferentes ámbitos de aplicación de los mismos, ha llevado a que las empresas los hayan puesto en marcha de manera independiente. A pesar de las numerosas similitudes entre los objetivos y procedimientos contemplados en dichos sistemas, por razones históricas y, en muchos casos, por

Miguel A. Rodriguez; Joan E. Ricart

2000-01-01

441

Impacto de las regulaciones ambientales en las estrategias de comercialización del café costarricense  

Microsoft Academic Search

El uso de instrumentos de gestión ambiental se ha introducido paulatinamente en la forma de hacer negocios de las empresas. Sea por presión externa o por iniciativa local, la implementación de este tipo de prácticas ha venido en aumento y con ello más firmas han visualizado a través de estos esquemas importantes herramientas de apoyo y proyección de sus estrategias

Suyen Alonso Ubieta; Gerardo Jiménez

2009-01-01

442

Transformaciones en el Discurso sobre la Epidemia al VIH como una Epidemia Sexuada - Paradojas y Enigmas en la Respuesta Global  

Microsoft Academic Search

Así como el discurso sobre sexualidad experimentó la influencia central de los procesos técnicos y políticos generados por la epidemia, igualmente el discurso global sobre la epidemia de SIDA a lo largo de tres décadas ha sido marcado por estos momentos cambiantes en el discurso sobre la sexualidad y su diversidad. Desde un momento inicial en que el SIDA fue

Carlos F. Cáceres

443

O USO DE ANIMAIS EM PESQUISAS CIENTÍFICAS  

Microsoft Academic Search

Historicamente, atividades didáticas e de pesquisa utilizando animais são realizadas desde a Antigüidade. Inicialmente, muitas destas práticas eram executadas por pessoas interessadas em aprofundar o seu conhecimento sobre um determinado assunto, porém, sem a exigência da aplicação de um método sistematizado de investigação. Com o passar do tempo esta sistematização incorporou-se às práticas didático-científicas, sendo realizadas por pessoas capacitadas para

Marcia Mocellin Raymundo; José Roberto Goldim

444

Situational Lightning Climatologies for Central Florida: Phase V.  

National Technical Information Service (NTIS)

The AMU added three years of data to the POR from the previous work resulting in a 22-year POR for the warm season months from 1989-2010. In addition to the flow regime stratification, moisture and stability stratifications were added to separate more act...

W. H. Bauman

2011-01-01

445

DESENVOLVIMENTO SUSTENTÁVEL E SOJICULTURA EM RORAIMA: TRAJETÓRIAS ANTAGÔNICAS OU CONCILIÁVEIS?  

Microsoft Academic Search

Quando há o entendimento de que crescimento e desenvolvimento são sinônimos, tende-se a prezar uma dimensão do desenvolvimento em detrimento das outras, o que acaba por prejudicar a população por meio de carências nas condições de vida e destruição do meio ambiente principalmente. O ideal do desenvolvimento sustentável surge na tentativa de harmonizar crescimento econômico, igualdade social e preservação ambiental.

Luciana Dal Gianluppi; Paulo Dabdab Waquil

2008-01-01

446

Antibioticoterapia em Crianças com Pneumonia Antibioticoterapia em Crianças com Pneumonia Antibioticoterapia em Crianças com Pneumonia Antibioticoterapia em Crianças com Pneumonia Antibioticoterapia em Crianças com Pneumonia Therapy with Antibiotics in Childhood Pneumonia  

Microsoft Academic Search

Pneumonia é responsável por elevadas taxas de hospitalização e óbito na faixa etária pediátrica, especialmente em crianças menores de cinco anos. Um grande número de microorganismos pode causar pneumonia na infância; no entanto, há nítido predomínio dos agentes bacterianos, principalmente do Streptococcus pneumoniae, entre os casos fatais. A terapia antimicrobiana é, portanto, um importante meio de controle da mortalidade por

Adriana O. Rocha; Delano S. Valois; Jovita S. Araújo; Lívia M. B. Mendes; Lucas C. S. Oliveira; N. Alcântara

2007-01-01

447

Proofs of retrievability: theory and implementation  

Microsoft Academic Search

A proof of retrievability (POR) is a compact proof by a file system (prover) to a client (verifier) that a target file F is intact, in the sense that the client can fully recover it. As PORs incur lower communication complexity than transmission of F itself, they are an attractive building block for high-assurance remote storage systems. In this paper,

Kevin D. Bowers; Ari Juels; Alina Oprea

2009-01-01

448

Reduction in hepatic drug metabolizing CYP3A4 activities caused by P450 oxidoreductase mutations identified in patients with disordered steroid metabolism  

SciTech Connect

Research highlights: {yields} Cytochrome P450 3A4 (CYP3A4), metabolizes 50% of drugs in clinical use and requires NADPH-P450 reductase (POR). {yields} Mutations in human POR cause congenital adrenal hyperplasia from diminished activities of steroid metabolizing P450s. {yields} We are reporting that mutations in POR may reduce CYP3A4 activity. {yields} POR mutants Y181D, A457H, Y459H, V492E and R616X lost 99%, while A287P, C569Y and V608F lost 60-85% CYP3A4 activity. {yields} Reduction of CYP3A4 activity may cause increased risk of drug toxicities/adverse drug reactions in patients with POR mutations. -- Abstract: Cytochrome P450 3A4 (CYP3A4), the major P450 present in human liver metabolizes approximately half the drugs in clinical use and requires electrons supplied from NADPH through NADPH-P450 reductase (POR, CPR). Mutations in human POR cause a rare form of congenital adrenal hyperplasia from diminished activities of steroid metabolizing P450s. In this study we examined the effect of mutations in POR on CYP3A4 activity. We used purified preparations of wild type and mutant human POR and in vitro reconstitution with purified CYP3A4 to perform kinetic studies. We are reporting that mutations in POR identified in patients with disordered steroidogenesis/Antley-Bixler syndrome (ABS) may reduce CYP3A4 activity, potentially affecting drug metabolism in individuals carrying mutant POR alleles. POR mutants Y181D, A457H, Y459H, V492E and R616X had more than 99% loss of CYP3A4 activity, while POR mutations A287P, C569Y and V608F lost 60-85% activity. Loss of CYP3A4 activity may result in increased risk of drug toxicities and adverse drug reactions in patients with POR mutations.

Flueck, Christa E.; Mullis, Primus E. [Pediatric Endocrinology, Diabetology and Metabolism, Department of Clinical Research, University of Bern, Tiefenaustrasse 120c, CH 3004 Bern (Switzerland)] [Pediatric Endocrinology, Diabetology and Metabolism, Department of Clinical Research, University of Bern, Tiefenaustrasse 120c, CH 3004 Bern (Switzerland); Pandey, Amit V., E-mail: amit@pandeylab.org [Pediatric Endocrinology, Diabetology and Metabolism, Department of Clinical Research, University of Bern, Tiefenaustrasse 120c, CH 3004 Bern (Switzerland)

2010-10-08

449

Reconstitution Experiments and Gene Deletions Reveal the Existence of Two-Component Major Cell Wall Channels in the Genus Corynebacterium?  

PubMed Central

Two small polypeptides, PorA and PorH, are known to form cell wall channels in Corynebacterium glutamicum and in Corynebacterium efficiens. The genes coding for both polypeptides are localized in close proximity to one another between the genes coding for GroEl2 and a polyphosphate kinase (PKK2). In this study, we investigated the relationship of PorA and PorH to one another. The results suggested that the major cell wall channels of Corynebacterium glutamicum, Corynebacterium efficiens, and Corynebacterium diphtheriae need the obligatory presence of two distinct polypeptides, one of class PorA and one of class PorH, to form an active cell wall channel. Identification of genes coding for homologous proteins in the chromosome of Corynebacterium callunae suggested a similar result for this strain. Contrary to our previous reports on channel-forming proteins in these strains, a heterooligomeric structure composed of PorA and PorH is needed in all of them to form the major cell wall channel. This was concluded from complementation experiments using a porH- and porA-deficient C. glutamicum strain. The stringent necessity of proteins of either class to recover the wild-type channels was demonstrated by black lipid bilayer experiments using detergent or organic solvent extracts of the complemented porH- and porA-deficient C. glutamicum strain. The channel-forming capability of recombinant expressed, affinity-purified PorA and PorH proteins of C. glutamicum revealed that the channels consisted solely of these two components. This agreed with results obtained from a transcript coding for both channel-forming components identified in C. glutamicum by Northern blot analysis and reverse transcription-PCR analysis. The transcription start point of the genes was determined by the rapid amplification of cDNA ends approach, allowing the prediction of the ?35 and ?10 regions of the promoter. The results demonstrate that the cell wall channels within the genus Corynebacterium may be formed by two-component oligomers.

Barth, Enrico; Barcelo, Miriam Agullo; Klackta, Christian; Benz, Roland

2010-01-01

450

TOPICAL REVIEW: Magneto-optical studies of low-dimensional organic conductors  

NASA Astrophysics Data System (ADS)

Our periodic orbit resonance (POR) results on quasi-two-dimensional (q2D), highly anisotropic q2D and quasi-one-dimensional (q1D) organic conductors are reviewed together with our rotational cavity magneto-optical measurement system. Higher order POR up to seventh order has been observed in the q2D system (BEDT-TTF)2Br(DIA), and the experimental conditions to observe POR and the cyclotron resonance (CR) are discussed. Highly anisotropic q2D Fermi surface (FS) in ?''-(BEDT-TTF)(TCNQ), which was considered to have q1D FS previously, is proposed by our POR measurements, and the possible interpretations of other experimental results of ?''-(BEDT-TTF)(TCNQ) are discussed assuming the highly anisotropic q2D FS. Finally, detailed q1D FS of (DMET)2I3, obtained from our POR results, is discussed in connection with the typical q1D system (TMTSF)2ClO4.

Ohta, Hitoshi; Kimata, Motoi; Oshima, Yugo

2009-04-01

451

Induction of immune responses by purified outer membrane protein complexes from Neisseria meningitidis.  

PubMed

A broad-spectrum vaccine against disease caused by serogroup B of Neisseria meningitidis is still a challenge due to antigenic variability. In the present study outer membrane protein complexes and their components were analysed using non-denaturing 2D electrophoresis and identified using LC/MS-MS and MALDI-TOF. Outer membrane protein complexes were purified from both the wild-type strain H44/76 and their knock-out mutants lacking PorA, PorB, RmpM or FetA. The immune responses elicited by the whole outer membrane vesicles (OMV) and the purified complexes were analysed for bactericidal activity, antibody surface binding, antibody-mediated C3b/iC3b deposition, membrane attack complex (MAC) deposition and induction of opsonophagocytosis, both on the homologous and several heterologous strains. The main antigenic complexes found were homomeric, formed by the 60 kDa chaperonin (MSP63) or PorB, or heteromeric, formed by different combinations of PorA, PorB and/or RmpM. The lack of some of these proteins in the OMVs from the knock-out mutants did not affect significantly the immune responses analysed except MAC, which was significantly reduced in the anti-PorA- and anti-PorB- sera, and bactericidal activity, which was absent in the anti-PorA- serum. The sera against purified native complexes showed variable activities against the homologous strain, with greatest responses observed for anti-chaperonin and anti-PorA/PorB/RmpM sera. When tested against heterologous strains, the only anti-complex serum showing consistent responses was that against the 60 kDa chaperonin. The comparison of the responses elicited by the different sera suggests an important role of conformational epitopes, present only in native complexes, in the induction of more effective responses against N. meningitidis. PMID:21911024

Marzoa, J; Sánchez, S; Costoya, L; Diéguez-Casal, E; Freixeiro, P; Brookes, C; Allen, L; Taylor, S; Gorringe, A R; Ferreirós, C M; Criado, M T

2012-03-16

452

Deletion of P399{sub E}401 in NADPH cytochrome P450 oxidoreductase results in partial mixed oxidase deficiency  

SciTech Connect

Highlights: {yields} Mutations in human POR cause congenital adrenal hyperplasia. {yields} We are reporting a novel 3 amino acid deletion mutation in POR P399{sub E}401del. {yields} POR mutation P399{sub E}401del decreased P450 activities by 60-85%. {yields} Impairment of steroid metabolism may be caused by multiple hits. {yields} Severity of aromatase inhibition is related to degree of in utero virilization. -- Abstract: P450 oxidoreductase (POR) is the electron donor for all microsomal P450s including steroidogenic enzymes CYP17A1, CYP19A1 and CYP21A2. We found a novel POR mutation P399{sub E}401del in two unrelated Turkish patients with 46,XX disorder of sexual development. Recombinant POR proteins were produced in yeast and tested for their ability to support steroid metabolizing P450 activities. In comparison to wild-type POR, the P399{sub E}401del protein was found to decrease catalytic efficiency of 21-hydroxylation of progesterone by 68%, 17{alpha}-hydroxylation of progesterone by 76%, 17,20-lyase action on 17OH-pregnenolone by 69%, aromatization of androstenedione by 85% and cytochrome c reduction activity by 80%. Protein structure analysis of the three amino acid deletion P399{sub E}401 revealed reduced stability and flexibility of the mutant. In conclusion, P399{sub E}401del is a novel mutation in POR that provides valuable genotype-phenotype and structure-function correlation for mutations in a different region of POR compared to previous studies. Characterization of P399{sub E}401del provides further insight into specificity of different P450s for interaction with POR as well as nature of metabolic disruptions caused by more pronounced effect on specific P450s like CYP17A1 and aromatase.

Flueck, Christa E., E-mail: christa.flueck@dkf.unibe.ch [Pediatric Endocrinology, Diabetology and Metabolism, University Children's Hospital, Bern (Switzerland); Mallet, Delphine [Service d'Endocrinologie Moleculaire et Maladies Rares, Hospices Civils de Lyon, Bron (France)] [Service d'Endocrinologie Moleculaire et Maladies Rares, Hospices Civils de Lyon, Bron (France); Hofer, Gaby [Pediatric Endocrinology, Diabetology and Metabolism, University Children's Hospital, Bern (Switzerland)] [Pediatric Endocrinology, Diabetology and Metabolism, University Children's Hospital, Bern (Switzerland); Samara-Boustani, Dinane [Hopital Necker-Enfants malades, Paris (France)] [Hopital Necker-Enfants malades, Paris (France); Leger, Juliane [Hopital Robert Debre, Paris (France)] [Hopital Robert Debre, Paris (France); Polak, Michel [Hopital Necker-Enfants malades, Paris (France)] [Hopital Necker-Enfants malades, Paris (France); Morel, Yves [Service d'Endocrinologie Moleculaire et Maladies Rares, Hospices Civils de Lyon, Bron (France)] [Service d'Endocrinologie Moleculaire et Maladies Rares, Hospices Civils de Lyon, Bron (France); Pandey, Amit V., E-mail: amit@pandeylab.org [Pediatric Endocrinology, Diabetology and Metabolism, University Children's Hospital, Bern (Switzerland)

2011-09-09

453

Isolation and analysis of the gene encoding the pyruvate-ferredoxin oxidoreductase of Desulfovibrio africanus, production of the recombinant enzyme in Escherichia coli, and effect of carboxy-terminal deletions on its stability.  

PubMed Central

Previous studies have shown that the pyruvate-ferredoxin oxidoreductase (POR) of the sulfate-reducing bacterium Desulfovibrio africanus is a homodimer that contains one thiamine pyrophosphate and three [4Fe-4S]2+/1+ centers/subunit. Interestingly, the enzyme isolated from a strictly anaerobic bacterium is highly stable in the presence of oxygen, in contrast to the other PORs characterized in anaerobic organisms (L. Pieulle, B. Guigliarelli, M. Asso, F. Dole, A. Bernadac, and E. C. Hatchikian, Biochim. Biophys. Acta 1250:49-59, 1995). We report here the determination of the nucleotide sequence of the por gene encoding the D. africanus POR. The amino acid sequence deduced from this nucleotide sequence corresponds to the first primary structure of a homodimeric POR from strictly anaerobic bacteria. The subunit of the D. africanus POR contains two ferredoxin-type [4Fe-4S] cluster binding motifs (CX2CX2CX3CP) and four additional highly conserved cysteines belonging to a nontypical motif. These 12 cysteine residues may coordinate the three Fe-S centers present in D. africanus POR. The thiamine pyrophosphate binding domain is located in the C-terminal part of the protein close to the four conserved cysteine residues. The D. africanus enzyme sequence appears homologous to the other POR sequences. However, the enzyme differs from all other PORs by a C-terminal extension of about 60 residues of its polypeptide chain. The two cysteine residues located in this additional region may be involved in the formation of a disulfide bridge associated with the activation process of the catalytic activity. The por gene has been expressed, for the first time, in anaerobically grown Escherichia coli behind the isopropyl-beta-D-thiogalactopyranoside-inducible tac promoter, resulting in the production of POR in its active form. The recombinant enzyme is stable toward oxygen during several days, and initial characterization of the recombinant POR showed that its activity increased in the presence of dithioerythritol. These properties indicate that the recombinant POR behaves like the native D. africanus enzyme. The study of carboxy-terminal deletion mutants strongly suggests that deletions in the C-terminal region of D. africanus enzyme can have dramatic effects on the stability of the enzyme toward oxygen.

Pieulle, L; Magro, V; Hatchikian, E C

1997-01-01

454

Arabidopsis light-dependent protochlorophyllide oxidoreductase A (PORA) is essential for normal plant growth and development.  

PubMed

During skotomorphogenesis in angiosperms, NADPH:protochlorophyllide oxidoreductase (POR) forms an aggregate of photolabile NADPH-POR-protochlorophyllide (Pchlide) ternary complexes localized to the prolamellar bodies within etioplasts. During photomorphogenesis, POR catalyzes the light-dependent reduction of Pchlide a to chlorophyllide (Chlide) a, which is subsequently converted to chlorophyll (Chl). In Arabidopsis there are three structurally related POR genes, denoted PORA, PORB and PORC. The PORA and PORB proteins accumulate during skotomorphogenesis. During illumination, PORA is only transiently expressed, whereas PORB and PORC persist and are responsible for bulk Chl synthesis throughout plant development. Here we have tested whether PORA is important for skotomorphogenesis by assisting in etioplast development, and normal photomorphogenic development. Using reverse genetic approaches, we have identified the porA-1 null mutant, which contains an insertion of the maize Dissociation transposable element in the PORA gene. Additionally, we have characterized PORA RNAi lines. The porA-1 and PORA RNAi lines display severe photoautotrophic growth defects, which can be partially rescued on sucrose-supplemented growth media. Elimination of PORA during skotomorphogenesis results in reductions in the volume and frequency of prolamellar bodies, and in photoactive Pchlide conversion. The porA-1 mutant characterization thus establishes a quantitative requirement for PORA in etioplast development by demonstrating significant membrane ultrastructural and biochemical defects, in addition to suggesting PORA-specific functions in photomorphogenesis and plant development. PMID:22278767

Paddock, Troy; Lima, Daniel; Mason, Mary E; Apel, Klaus; Armstrong, Gregory A

2012-03-01

455

NADPH-Cytochrome P450 Oxidoreductase: Roles in Physiology, Pharmacology, and Toxicology  

PubMed Central

This is a report on a symposium sponsored by the American Society for Pharmacology and Experimental Therapeutics and held at the Experimental Biology 2012 meeting in San Diego, California, on April 25, 2012. The symposium speakers summarized and critically evaluated our current understanding of the physiologic, pharmacological, and toxicological roles of NADPH–cytochrome P450 oxidoreductase (POR), a flavoprotein involved in electron transfer to microsomal cytochromes P450 (P450), cytochrome b5, squalene mono-oxygenase, and heme oxygenase. Considerable insight has been derived from the development and characterization of mouse models with conditional Por deletion in particular tissues or partial suppression of POR expression in all tissues. Additional mouse models with global or conditional hepatic deletion of cytochrome b5 are helping to clarify the P450 isoform- and substrate-specific influences of cytochrome b5 on P450 electron transfer and catalytic function. This symposium also considered studies using siRNA to suppress POR expression in a hepatoma cell–culture model to explore the basis of the hepatic lipidosis phenotype observed in mice with conditional deletion of Por in liver. The symposium concluded with a strong translational perspective, relating the basic science of human POR structure and function to the impacts of POR genetic variation on human drug and steroid metabolism.

Ding, Xinxin; Wolf, C. Roland; Porter, Todd D.; Pandey, Amit V.; Zhang, Qing-Yu; Gu, Jun; Finn, Robert D.; Ronseaux, Sebastien; McLaughlin, Lesley A.; Henderson, Colin J.; Zou, Ling; Fluck, Christa E.

2013-01-01

456

EPR study of new defects in neutron irradiated KS-4V and KU1 fused silica  

NASA Astrophysics Data System (ADS)

Electron paramagnetic resonance (EPR) studies have been carried out on high purity fused silica KS-4V (low OH content) and KU1 (high OH content), irradiated with fast neutrons (E > 0.1 MeV) at a high fluence of 1022 n/m2. The spectrum of irradiated samples shows various well-known types of paramagnetic defects, POR, NBOHC and E'. Their thermal stability has also been studied by heating the samples in air up to 775 °C. A detailed analysis of the spectra shows that the POR spectrum of neutron-irradiated KS-4V and KU1 has two contributions from centres POR(I) and POR(II), which show very different thermal annealing behaviour. POR(I) is identified with the POR centre previously reported, whereas POR(II) is associated to the effects of fast neutrons. Moreover, a new broad line centred at g = 2.02 is reported that we suggest could be associated to oxygen-hole centres in the neighbourhood of the high amount of tracks generated by ion displacement due to fast neutrons.

Lagomacini, J. C.; Bravo, D.; Martín, P.; Ibarra, A.; Martín, A.; López, F. J.

2010-11-01

457

A twin-track approach has optimized proton and hydride transfer by dynamically coupled tunneling during the evolution of protochlorophyllide oxidoreductase.  

PubMed

Protein dynamics are crucial for realizing the catalytic power of enzymes, but how enzymes have evolved to achieve catalysis is unknown. The light-activated enzyme protochlorophyllide oxidoreductase (POR) catalyzes sequential hydride and proton transfers in the photoexcited and ground states, respectively, and is an excellent system for relating the effects of motions to catalysis. Here, we have used the temperature dependence of isotope effects and solvent viscosity measurements to analyze the dynamics coupled to the hydride and proton transfer steps in three cyanobacterial PORs and a related plant enzyme. We have related the dynamic profiles of each enzyme to their evolutionary origin. Motions coupled to light-driven hydride transfer are conserved across all POR enzymes, but those linked to thermally activated proton transfer are variable. Cyanobacterial PORs require complex and solvent-coupled dynamic networks to optimize the proton donor-acceptor distance, but evolutionary pressures appear to have minimized such networks in plant PORs. POR from Gloeobacter violaceus has features of both the cyanobacterial and plant enzymes, suggesting that the dynamic properties have been optimized during the evolution of POR. We infer that the differing trajectories in optimizing a catalytic structure are related to the stringency of the chemistry catalyzed and define a functional adaptation in which active site chemistry is protected from the dynamic effects of distal mutations that might otherwise impact negatively on enzyme catalysis. PMID:21317291

Heyes, Derren J; Levy, Colin; Sakuma, Michiyo; Robertson, David L; Scrutton, Nigel S

2011-04-01

458

Toll-Like Receptors Expression in Follicular Cells of Patients with Poor Ovarian Response  

PubMed Central

Background Poor ovarian response (POR) to gonadotropin stimulation has led to a significant decline in success rate of fertility treatment. The immune system may play an important role in pathophysiology of POR by dysfunctions of cytokines and the growth factor network, and the presence of ovarian auto-antibodies. The aim of this study is to investigate the expression of toll-like receptors (TLR) 1, 2, 4, 5, 6 and cyclooxygenase (COX) 2 genes in follicular cells and concentration of interleukin (IL)-6, IL-8 and macrophage migration inhibitory factor (MIF), as major parts of innate immunity, in follicular fluid (FF) obtained from POR women in comparison with normal women. Materials and Methods In this case-control study, 20 infertile POR patients and 20 normal women took part in this study and underwent controlled ovarian stimulation. The FF was obtained from the largest follicle (>18 mm). The FF was centrifuged and cellular pellet was then used for evaluation of expression of TLRs and COX2 genes by real-time PCR. FF was used for quantitative analysis for IL-6, IL-8 and MIF by enzyme-linked immunosorbent assay (ELISA). Results TLR1, 2, 4, 5, 6 and COX2 gene expression were significantly higher in POR (p<0.05). Concentration of IL-6, IL-8 and MIF proteins was significantly increased in POR compared with normal women (p<0.05). Conclusion These findings support the hypothesis that the immune system may be involved in pathophysiology of POR through TLRs.

Taghavi, Seyed Abdolvahab; Ashrafi, Mahnaz; Mehdizadeh, Mehdi; Karimian, Leili; Joghataie, Mohammad Taghi; Aflatoonian, Reza

2014-01-01

459

Transcriptional Regulation of the Human P450 Oxidoreductase Gene: Hormonal Regulation and Influence of Promoter Polymorphisms  

PubMed Central

P450 oxidoreductase (POR) is the flavoprotein that acts as the obligatory electron donor to all microsomal P450 enzymes, including those involved in hepatic drug metabolism as well as three steroidogenic P450 enzymes. The untranslated first exon of human POR was located recently, permitting analysis of human POR transcription. Expression of deletional mutants containing up to 3193 bp of the human POR promoter in human adrenal NCI-H295A and liver Hep-G2 cells located the proximal promoter at ?325/?1 bp from the untranslated exon. Common human POR polymorphisms at ?208 and ?173 had little influence on transcription, but the polymorphism at ?152 reduced transcription significantly in both cell lines. EMSA and supershift assays identified binding of Smad3/Smad4 between ?249 and ?261 and binding of thyroid hormone receptor-? (TR?) at ?240/?245. Chromatin immunoprecipitation showed that Smad3, Smad4, TR?, TR?, and estrogen receptor-? were bound between ?374 and ?149. Cotransfection of vectors for these transcription factors and POR promoter-reporter constructs into both cell types followed by hormonal treatment showed that T3 exerts major tropic effects via TR?, with TR?, estrogen receptor-?, Smad3, and Smad4 exerting lesser, modulatory effects. T3 also increased POR mRNA in both cell lines. Thyroid hormone also is essential for rat liver POR expression but acts via different transcription factor complexes. These are the first data on human POR gene transcription, establishing roles for TR? and Smad3/4 in its expression and indicating that the common polymorphism at ?152 may play a role in genetic variation in steroid biosynthesis and drug metabolism.

Tee, Meng Kian; Huang, Ningwu; Damm, Izabella

2011-01-01

460

Moléculas orgánicas obtenidas en simulaciones experimentales del medio interestelar.  

NASA Astrophysics Data System (ADS)

Las nubes moleculares son regiones de formación de estrellas, con temperaturas cinéticas entre 10-50 K y densidades de 103-106 átomos cm-3. Su materia está formada por gas y polvo interestelar. Estas partículas de polvo están cubiertas por una fina capa de hielo, de unos 0.01 ?m, que contiene H2O y a menudo CO, CO2, CH3OH y NH3. El hielo es presumiblemente irradiado por fotones ultravioleta y rayos cósmicos en las zonas poco profundas de las nubes moleculares y las regiones circunestelares. En un sistema de vacío, P ˜ 10-7 mbar, simulamos la deposición de hielo a partir de 10 K y la irradiación ultravioleta por medio de una lámpara de descarga de hidrógeno activada con microondas. La evolución del hielo se observa por medio de un espectrómetro infrarrojo. De este modo es posible determinar la composición del hielo observado en el medio interestelar y predecir la presencia de moléculas aún no detectadas en el espacio, que han sido producto del procesamiento del hielo en nuestros experimentos. También es posible calentar el sistema hasta temperatura ambiente para sublimar el hielo depositado. Cuando el hielo ha sido previamente irradiado, se observa un residuo compuesto por moléculas orgánicas complejas, algunas prebióticas, como varios ácidos carboxílicos, aminas, amidas, ésteres y en menor proporción moléculas heterocíclicas y aminoácidos. Algunas de estas moléculas podrían detectarse en estado gaseoso por medio de observaciones milimétricas y de radio. También podrían estar presentes en el polvo cometario, cuyo análisis químico está planeado por las misiones Stardust y Rosetta. Mientras tanto, nuestro grupo está llevando a cabo el análisis de partículas de polvo interplanetario (IDPs), algunas de las cuales pueden ser de origen cometario. Al igual que ocurre con los productos obtenidos por irradiación del hielo en nuestros experimentos, algunas IDPs son ricas en material orgánico que contiene oxígeno.

Muñoz-Caro, Guillermo Manuel

461

Purification and kinetic analysis of pea (Pisum sativum L.) NADPH:protochlorophyllide oxidoreductase expressed as a fusion with maltose-binding protein in Escherichia coli.  

PubMed Central

NADPH:protochlorophyllide oxidoreductase (POR) catalyses the light-dependent reduction of protochlorophyllide to chlorophyllide, a key reaction in the chlorophyll biosynthetic pathway. To facilitate structure-function studies, POR from pea (Pisum sativum L.) has been overexpressed in Escherichia coli as a fusion with maltose-binding protein (MBP) at 5-10% of the total soluble cell protein. The fusion protein (MBP-POR) has been purified to greater than 90% homogeneity by a two-step affinity-purification procedure. This represents the first successful overexpression and purification of a plant POR. MBP-POR was found to be active, and the kinetic properties were determined using a continuous assay in which the rate of chlorophyllide formation was measured. The Vmax was 20.6+/-0.9 nmol.min-1.mg-1 and the Km values for NADPH and protochlorophyllide were 8.7+/-1.9 microM and 0.27+/-0.04 microM respectively. These results represent the first determination of the kinetic properties of a pure POR and the first report on the kinetics of POR from a dicotyledenous plant. The experiments described here demonstrate that the enzyme is not a 'suicide' enzyme, and the only components required for catalysis are NADPH, protochlorophyllide and light. Size-exclusion chromatography on a Superose 6 HR column indicated that MBP-POR has a molecular mass of 155 kDa (compared with the molecular mass of 80 kDa estimated by SDS/PAGE), indicating that it behaves as a dimer in solution. This is the first direct determination of the oligomerization state of POR.

Martin, G E; Timko, M P; Wilks, H M

1997-01-01

462

Como Lo Hago Yo: Anomal?as del Tubo Neural en Guatemala -- Mielomeningocele Unidad de Espina B?fida e Hidrocefalia  

PubMed Central

En Guatemala nacen por añ 786 niños con defectos de tubo neural. Operamos 65 a 70 niños con mielomenigocele por año. Tenemos equipo multidisciplinario. Recomendamos parto por cesárea. Infección antes de la cirugía es un problema mayor. Derivación tardía es un problema. Disecamos la plaqueta con la técnica clásica. Suturamos la plaqueta para restituir la forma de la médula. Corpectomía en casos de cifósis. Hidrocefalía: Operamos el 80% de los niños. Chiari II: Operamos basados en los síntomas, primero nos aseguramos que la válvula funciona bien. Médula anclada: Operamos basados en los síntomas.

Manucci, Graciela; von Quednow, Enzo

2014-01-01

463

Fundamental differences of substrate hydroxylation by high-valent iron(IV)-oxo models of cytochrome P450.  

PubMed

An Iron(IV)-oxo heme(+*) complex (Compound I, Cpd I) is the proposed active species of heme enzymes such as the cytochromes P450 and is elusive; therefore, biomimetic studies on active site mimics give valuable insight into the fundamental properties of heme active species. In this work we present density functional theory (DFT) calculations on substrate hydroxylation by a Compound I mimic [Fe(IV)=O(Por(+*))Cl] and its one-electron reduced form [Fe(IV)=O(Por)Cl](-). Thus, recent experimental studies showed that [Fe(IV)=O(Por)Cl](-) is able to react with substrates via hydride transfer reactions [Jeong, Y. J.; Kang, Y.; Han, A.-R.; Lee, Y.-M.; Kotani, H.; Fukuzumi, S.; Nam, W. Angew. Chem., Int. Ed. 2008, 47, 7321-7324]. By contrast, theoretical studies on camphor hydroxylation by these two oxidants concluded that the one-electron reduced form of Compound I is a sluggish oxidant of hydroxylation reactions [Altun, A.; Shaik, S.; Thiel, W. J. Am. Chem. Soc. 2007, 129, 8978-8987]. To resolve the question why the one-electron reduced Compound I is an oxidant in one case and a sluggish oxidant in other cases, we have performed a DFT study on 10-methyl-9,10-dihydro acridine (AcrH(2)) hydroxylation by [Fe(IV)=O(Por(+*))Cl] and [Fe(IV)=O(Por)Cl](-). The calculations presented in this work show that both [Fe(IV)=O(Por(+*))Cl] and [Fe(IV)=O(Por)Cl](-) are plausible oxidants, but [Fe(IV)=O(Por(+*))Cl] reacts via much lower reaction barriers. Moreover, [Fe(IV)=O(Por(+*))Cl] reacts via hydride transfer, while [Fe(IV)=O(Por)Cl](-) by hydrogen abstraction. The differences between hydride and hydrogen atom transfer reactions have been rationalized with thermodynamic cycles and shown to be the result of differences in electron abstraction abilities of the two oxidants. Thus, the calculations predict that [Fe(IV)=O(Por)Cl](-) is only able to hydroxylate weak C-H bonds, whereas [Fe(IV)=O(Por(+*))Cl] is more versatile. PMID:19469505

Tahsini, Laleh; Bagherzadeh, Mojtaba; Nam, Wonwoo; de Visser, Sam P

2009-07-20

464

Heat Illness - Multiple Languages: MedlinePlus  

MedlinePLUS

... English Toplotni talasi - Bosanski (Bosnian) Multimedia Healthy Roads Media Chinese - Traditional (????) "It's Too Darn Hot" -- Planning for Excessive Heat Events English ?????-- ???????? - ???? (Chinese - ... Healthy Roads Media Return to top Spanish (español) Enfermedades causadas por ...

465

78 FR 49256 - Certain Pasta From Italy: Preliminary Results of the Countervailing Duty Administrative Review; 2011  

Federal Register 2010, 2011, 2012, 2013

...C-475-819] Certain Pasta From Italy: Preliminary Results of the Countervailing...countervailing duty order on certain pasta from Italy. The period of review (``POR...order consists of certain pasta from Italy. The merchandise subject to the...

2013-08-13

466

Cometas  

NASA Video Gallery

¿Sabías que los cometas que vemos por el cielo nocturno pueden haber traído hace miles de millones de años, los elementos básicos para la vida a nuestro planeta? Únete a la NASA para aprender más a...

467

Carbon Monoxide Poisoning - Multiple Languages: MedlinePlus  

MedlinePLUS

... Hmoob) Khmer (Khmer) Kurdish (?????) Laotian (Lao) Portuguese (português) Somali (af Soomaali) Spanish (español) Swahili (Kiswahili) Tagalog ( ... Disease Control and Prevention Return to top Portuguese (português) Carbon Monoxide Poisoning English Envenenamento por monóxido de ...

468

Costa Rica and Uruguay: The Political Economy of Poverty, Equity, and Growth.  

National Technical Information Service (NTIS)

This volume is the fifth of several emerging from the comparative study sponsored by the World Bank. This study of Uruguay and Costa Rica reveals two countries with striking similarities in initial conditions, economic policies, and outcomes. The book por...

S. Rottenberg A. Bension V. Cespedes E. Favaro C. Gonzalez-Vega D. Lal H. Myint

1993-01-01

469

77 FR 73010 - Polyethylene Terephthalate Film, Sheet, and Strip From the United Arab Emirates; Preliminary...  

Federal Register 2010, 2011, 2012, 2013

...Sheet, and Strip From the United Arab Emirates; Preliminary Results of Antidumping...strip (PET Film) from the United Arab Emirates (UAE). The period of review (POR...Sheet, and Strip from the United Arab Emirates'' (Preliminary Decision...

2012-12-07

470

78 FR 77649 - Polyethylene Terephthalate Film, Sheet, and Strip From the United Arab Emirates; Preliminary...  

Federal Register 2010, 2011, 2012, 2013

...Sheet, and Strip From the United Arab Emirates; Preliminary Results of Antidumping...strip (PET Film) from the United Arab Emirates (UAE). The period of review (POR...Sheet, and Strip from the United Arab Emirates'' (Preliminary Decision...

2013-12-24

471

Intellectual Disability  

MedlinePLUS

... enfermedad o un problema en el cerebro. En muchos niños no se conoce la causa del discapacidad ... los niños más tarde en la vida. Hay muchos síntomas de discapacidad intelectual. Por ejemplo, los niños ...

472

"STARS" at Black Island Comms.  

NSF Publications Database

... with Black Island chosen over Arrival Heights, Cape Royds, White Island, Daily Island, Marble Point ... Island. The Black Island site provides an unobstructed horizon of the Pacific Ocean Region (POR ...

473

Complicaciones orales de la quimioterapia y la radioterapia a la cabeza y el cuello (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de las complicaciones orales, como la mucositis y la disfunción de la glándula salival, que se presentan en pacientes de cáncer tratados con quimioterapia y radioterapia a la cabeza y el cuello.

474

Dolor (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca del dolor como una complicación a causa del cáncer o su tratamiento. Se discuten enfoques sobre el manejo y tratamiento del dolor relacionado con el cáncer.

475

Náuseas y vómitos (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de las náuseas y los vómitos como complicaciones a causa del cáncer o su tratamiento. Se discuten enfoques sobre el manejo de las náuseas y los vómitos.

476

Diabetes in Hispanics/Latinos  

MedlinePLUS

... Your Life/ Movimiento Por Su Vida This lively music CD helps Hispanics and Latinos incorporate more movement ... can help prevent and manage diabetes. Use this music CD to encourage individuals or groups to exercise. ...

477

Prevención del cáncer de boca (PDQ®)  

Cancer.gov

Sumario de información revisada por expertos sobre factores que pueden influir en el riesgo de presentar cáncer de labio o de boca, y sobre las investigaciones dirigidas a la prevención de esta enfermedad.

478

Fumar durante el tratamiento de cáncer (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de la influencia de seguir fumando sobre el tratamiento del cáncer y el riesgo de segundos cánceres. Se mencionan las intervenciones que estimulan dejar el hábito de fumar.

479

Aspectos relacionados con la sexualidad y la reproducción (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de los factores que pueden afectar el funcionamiento sexual de las personas con cáncer. Se discuten además temas sobre la fecundidad relacionados con el tratamiento del cáncer.

480

Prurito (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca del prurito (picazón de la piel) como complicación a causa del cáncer y su tratamiento. Se discuten los enfoques del manejo y tratamiento del prurito.

481

Trastorno de tensión postraumática (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca del trastorno de tensión postraumática en los pacientes con cáncer, sobrevivientes del cáncer y miembros de la familia. Se discuten la evaluación y tratamiento de este trastorno.

482

Delirio (PDQ®)  

Cancer.gov

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

483

Linfedema (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos sobre la anatomía, la patofisiología, las manifestaciones clínicas, el diagnóstico y el tratamiento del linfedema relacionado con el cáncer, una afección en la que se acumula líquido linfático en los tejidos y causa inflamación..

484

78 FR 72633 - Chlorinated Isocyanurates From Spain: Final Results of Antidumping Duty Administrative Review...  

Federal Register 2010, 2011, 2012, 2013

...A-469-814] Chlorinated Isocyanurates From Spain: Final Results of Antidumping Duty Administrative...isocyanurates (chlorinated isos) from Spain.\\1\\ The period of review (``POR...1\\ See Chlorinated Isocyanurates from Spain: Preliminary Results of the...

2013-12-03

485

Cánceres poco comunes en la niñez: Tratamiento (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca del tratamiento de los cánceres poco comunes en la niñez como los cánceres de la cabeza y el cuello, el tórax, el abdomen, el aparato reproductor, la piel y otros.

486

La espiritualidad en el tratamiento del cáncer (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de la influencia que tiene la espiritualidad y la religión en las personas que tienen cáncer. Se discuten varios métodos sobre manejo e intervención.

487

Complicaciones gastrointestinales (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca del estreñimiento, la retención fecal, la obstrucción intestinal y la diarrea como complicaciones del cáncer o su tratamiento. Se discute el manejo de estos problemas.

488

Adaptación al cáncer: ansiedad y sufrimiento (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de las difíciles respuestas emocionales que se presentan en muchos de los pacientes con cáncer. Este sumario se enfoca en asuntos de la adaptación normal, alteración psicosocial y trastornos de adaptación.

489

77 FR 13534 - Silicon Metal From the People's Republic of China: Preliminary Results of Antidumping Duty...  

Federal Register 2010, 2011, 2012, 2013

...valued all packing and direct materials, except quartz, using Thai import data from the GTA that are contemporaneous with the POR. We valued quartz using the price of unground quartz in 2010 from Mineral Statistics of Thailand...

2012-03-07

490

La Ciencia y el Laboratorio Científico de Marte  

NASA Video Gallery

el robot más nuevo fabricado para Marte es el Laboratorio Científico de Marte o Curiosity. ¡Se encuentra listo para deambular por el planeta rojo con el mayor y más avanzado conjunto de instrumento...

491

Preguntas para el doctor sobre el cáncer  

Cancer.gov

Serie de preguntas, organizadas por tema, que los pacientes con cáncer pueden hacerle al médico o a otros miembros de su equipo de atención médica para conocer más acerca de su tipo de cáncer y lo que pueden esperar.

492

Fermi surface study of quasi-one-dimensional metals using magneto-optical techniques  

NASA Astrophysics Data System (ADS)

Magneto-optical measurements of a quasi-one-dimensional (q1D) organic superconductor (DMET)2I3 have been performed by using a cavity perturbation technique. Several resonant absorption lines, which can be attributed to the q1D periodic orbit resonance (q1D POR), were observed as well as quite unusual high order q1D PORs coming from its corrugated Fermi surface (FS) in the interlayer direction. Moreover, these resonances seem to disappear when the magnetic field is applied close to the conducting axis due to the FS topological effect, and the transfer integral ratio can be obtained from the angular dependence of q1D POR. The FS of (DMET)2I3 can be estimated from these analyses of q1D PORs, and we will show that it has a characteristic FS structure. The observed results also indicate that the interlayer transport of (DMET)2I3 is coherent.

Oshima, Y.; Kimata, M.; Kishigi, K.; Ohta, H.; Koyama, K.; Motokawa, M.; Nishikawa, H.; Kikuchi, K.; Ikemoto, I.

2003-08-01

493

Back Cover: NIH MedlinePlus Salud  

MedlinePLUS

Skip Navigation Bar Home Current Issue Past Issues NIH MedlinePlus Salud Past Issues / Winter 2009 Table of ... su salud! Los Institutos Nacionales de la Salud (NIH, por sus siglas en inglés), la Sociedad de ...

494

NASA Accident Precursor Analysis Handbook, Version 1.0.  

National Technical Information Service (NTIS)

Catastrophic accidents are usually preceded by precursory events that, although observable, are not recognized as harbingers of a tragedy until after the fact. In the nuclear industry, the Three Mile Island accident was preceded by at least two events por...

A. Hall C. Everett F. Groen S. Insley

2011-01-01

495

76 FR 12325 - Small Diameter Graphite Electrodes From the People's Republic of China: Preliminary Results of...  

Federal Register 2010, 2011, 2012, 2013

...Carbon at verification initially provided four maps from the Chinese internet search engine ``Baidu maps'' as support for its reported suppliers...during the POR). In our review of these maps, we found that the Baidu map distances...

2011-03-07

496

Antioxidantes y prevención del cáncer  

Cancer.gov

Hoja informativa acerca de los antioxidantes, sustancias que pueden proteger las células del daño causado por moléculas inestables conocidas como radicales libres. El daño de los radicales libres puede resultar en cáncer.

497

Las características más fascinantes del nuevo Robot  

NASA Video Gallery

impresionante es la palabra que describe perfectamente al nuevo robot Curiosity por su tamaño, sus instrumentos científicos y la manera en que la NASA planifica hacerlo aterrizar en Marte de forma ...

498

Highly Conductive Copper Phthalocyanine-Carbon Plack Mixtures  

Microsoft Academic Search

Data on electrical behaviour of copper phthalocyanine-carbon black mixtures are presented. Por some samples the transition between semiconducting and metallic states is observed. The conductivity of the mixtures is found to be dependent on carbon black grain size.

Marek Kulesza; Maria Zabkowska; Witold Waciawek

1985-01-01

499

77 FR 2958 - Certain Frozen Warmwater Shrimp From the Socialist Republic of Vietnam: Extension of Preliminary...  

Federal Register 2010, 2011, 2012, 2013

...The period of review (``POR'') is February 1, 2010, through January 31, 2011. FOR FURTHER INFORMATION CONTACT: Toni Dach or Seth Isenberg, AD/CVD Operations, Office 9, Import Administration, International Trade Administration, U.S....

2012-01-20

500

76 FR 65178 - Certain Frozen Warmwater Shrimp From the Socialist Republic of Vietnam: Extension of Preliminary...  

Federal Register 2010, 2011, 2012, 2013

...The period of review (``POR'') is February 1, 2010, through January 31, 2011. FOR FURTHER INFORMATION CONTACT: Toni Dach or Seth Isenberg, AD/CVD Operations, Office 9, Import Administration, International Trade Administration, U.S....

2011-10-20