Note: This page contains sample records for the topic amalgama por diferentes from Science.gov.
While these samples are representative of the content of Science.gov,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of Science.gov
to obtain the most current and comprehensive results.
Last update: August 15, 2014.
1

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

2

Diferentes Metodologias Aplicadas ao Ensino de Astronomia  

NASA Astrophysics Data System (ADS)

Espera-se que o educando ao final da educação básica, adquira uma compreensão atualizada das hipóteses, modelos e formas de investigação sobre a origem e evolução do Universo em que vive. O presente trabalho tem como principal objetivo compreender dentre três práticas pedagógicas adotadas no Ensino de Astronomia, na terceira série do Ensino Médio, da Escola Estadual Colônia dos Pescadores, qual melhor cumpre o papel de formação e aprendizagem para vida. A pesquisa preliminar foi através de um questionário onde o intuito foi diagnosticar o conhecimento já existente acerca do tema em questão. O questionário é composto de vinte questões dissertativas e objetivas, onde os educandos das três turmas envolvidas o responderam. Este trabalho utiliza as seguintes metodologias: a tradicional, onde o professor é um repassador de informações, fazendo uso exclusivo de lousa e giz; a segunda também de forma tradicional, porém com auxílio de multimídia para desenvolvimento das aulas e aterceira sob forma de seminários, elaborados e apresentados pelos educandos, no qual o educador faz apenas as intervenções necessárias. Ao final do trabalho os alunos responderão novamente o questionário inicial para diagnosticar dentre as três metodologias utilizadas qual apresentou melhor resultado. Os resultados preliminares obtidos, já podem ser observados e, dos 119 alunos entrevistados, as respostas obtidas são as mais diversas e evidenciam que a grande maioria nunca teve em sua vida escolar o tema Astronomia. Ao serem questionados se já haviam estudado Astronomia as respostas foram: turma A: sim 43%; turma B: sim: 21%; turma C: sim: 24%. Porém quando questionados a respeito do significado de Astronomia observou-se que: turma A: 100% de acertos; turma B: 64% acertos; turma C: 84% de acertos, demonstrando claramente a aprendizagem em diferentes esferas, não dependendo unicamente da escola. Até o presente momento, verificou-se que há interesse em estudar o tema Astronom! ia entre os educandos.

Albrecht, E.; Voelzke, M. R.

2007-08-01

3

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

4

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

5

Oral Lichenoid Contact Lesions to Mercury and Dental Amalgam--A Review  

PubMed Central

Human oral mucosa is subjected to many noxious stimuli. One of these substances, in those who have restorations, is dental amalgam which contains mercury. This paper focuses on the local toxic effects of amalgam and mercury from dental restorations. Components of amalgam may, in rare instances, cause local side effects or allergic reactions referred to as oral lichenoid lesions (OLLs). OLLs to amalgams are recognised as hypersensitivity reactions to low-level mercury exposure. The use of patch testing to identify those susceptible from OLL is explored, and recommendations for removing amalgam fillings, when indicated are outlined. We conclude that evidence does not show that exposure to mercury from amalgam restorations poses a serious health risk in humans, except for an exceedingly small number of hypersensitivity reactions that are discussed.

McParland, Helen; Warnakulasuriya, Saman

2012-01-01

6

Oral lichenoid contact lesions to mercury and dental amalgam--a review.  

PubMed

Human oral mucosa is subjected to many noxious stimuli. One of these substances, in those who have restorations, is dental amalgam which contains mercury. This paper focuses on the local toxic effects of amalgam and mercury from dental restorations. Components of amalgam may, in rare instances, cause local side effects or allergic reactions referred to as oral lichenoid lesions (OLLs). OLLs to amalgams are recognised as hypersensitivity reactions to low-level mercury exposure. The use of patch testing to identify those susceptible from OLL is explored, and recommendations for removing amalgam fillings, when indicated are outlined. We conclude that evidence does not show that exposure to mercury from amalgam restorations poses a serious health risk in humans, except for an exceedingly small number of hypersensitivity reactions that are discussed. PMID:22888200

McParland, Helen; Warnakulasuriya, Saman

2012-01-01

7

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

8

Diferentes metodologias aplicadas ao ensino de astronomia no Ensino Médio  

NASA Astrophysics Data System (ADS)

O presente trabalho de intervenção foi realizado junto à Escola Estadual Colònia dos Pescadores na cidade de Caraguatatuba, com très turmas do terceiro ano do Ensino Médio, envolvendo 119 alunos com idades entre 16 e 19 anos. A fase inicial foi composta de um questionário de vinte questíes dissertativas e objetivas, aplicado pelo professor titular da sala, que era o mesmo nas très turmas, para diagnosticar nos educandos os conceitos prévios sobre Astronomia e, partindo destes realizar um trabalho de intervenção nas classes envolvidas utilizando, em cada uma, metodologias diferentes: (A) sob forma de seminários, elaborados e apresentados pelos educandos, no qual o educador faz apenas as intervençíes necessárias; (B) de forma tradicional, com auxílio de multimídias para desenvolvimento das aulas e a terceira (C) tradicional, fazendo uso exclusivo de lousa e giz. Ao final do trabalho os alunos responderam novamente o questionário inicial para diagnosticar dentre as très metodologias utilizadas qual apresentou melhores aplicaçíes, os resultados iniciais foram comparados com os finais. Quando questionados a respeito do significado de Astronomia observou-se inicialmente que os acertos na turma A foram de 100%, turma B: 64%, turma C: 84%, após a intervenção os acertos foram: 100%, 97% e 85% respectivamente, demonstrando que houve um avanço significativo na turma B, a turma A manteve seu índice e a turma C evoluiu, porém não tanto quanto a B. Quando interrogados sobre quantos planetas vocè acha que existem em nosso Sistema Solar? os acertos foram: turma A: 39%, turma B: 48% e turma C: 46%, após o desenvolvimento do trabalho os acertos foram 94%, 97% e 90% respectivamente. Dentro das respostas obtidas observa-se que a metodologia tradicional com o auxílio de multimeios, aplicada na turma B, demonstrou melhores resultados, sendo a mais significativa. Outra conclusão muito importante é que apesar de o tema Astronomia ser amplamente recomendado, este não é ensinado, nem no Ensino Fundamental, nem no Ensino Médio.

Albrecht, E.; Voelzke, M. R.

2009-03-01

9

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

10

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

11

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

12

Planificación urbana versus autoregulación: la ciudad de Fortaleza (Brasil) como tablero de juego de diferentes agentes  

Microsoft Academic Search

Fortaleza es una ciudad relativamente jóven en cuanto a su importancia como metrópoli regional, caracterizándose sobre todo en las últimas décadas por una muy fuerte dinámica demográfica, económica y política. En este contexto el espacio urbano se ha convertido en una mercancía de alto costo, disputada entre los intereses contradictorios de compañías influentes, especuladores inmobiliarios, políticos y el resto de

Waltraud Rosner; Ulli Vilsmaier

2007-01-01

13

ESTUDO COMPARATIVO DE DIFERENTES FORMAS DE TRATAMENTO DE CONDILOMAS ACUMINADOS COMPARATIVE STUDY OF DIFFERENT WAYS OF TREATMENT ON GENITAL WART  

Microsoft Academic Search

Introdução: atualmente, a infecção genital pelo papilomavírus humano (HPV) constitui-se na DST mais prevalente nos diferentes grupos etários e na maior parte das unidades de saúde públicas. Normalmente é a DST que mais se associa a outras infecções genitais. Objetivos: observar difer- entes formas terapêuticas de pacientes apresentando condiloma acuminado. Observar a ocorrência de associação com sífilis. Métodos: foram estuda-

Tomaz B Isolan; Gutemberg L Almeida Filho; Mauro RL Passos; Renato S Bravo

14

Comportamento da dose glandular versus contraste do objeto em mamografia: determinação de formalismo semi-empírico para diferentes combinações alvo-filtro  

Microsoft Academic Search

OBJETIVO: Verificar o efeito da mudança no contraste do objeto, tempo de exposição e dose de radiação quando diferentes espessuras de filtração de molibdênio (Mo) e ródio (Rh) são empregadas em mamógrafos. MATERIAIS E MÉTODOS: Realizaram-se medidas da exposição na entrada da pele com uma câmara de ionização para diferentes espessuras para os filtros de Mo e Rh. Para determinar

Gabriela Hoff; Carlos Eduardo de Almeida; Gary T. Barnes

2006-01-01

15

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.

16

On Ensino da Astronomia no Ensino Médio sob Diferentes Abordagens Metodológicas  

NASA Astrophysics Data System (ADS)

O presente trabalho, sobre a intervenção de metodologias de ensino, foi desenvolvido na Escola Estadual Colônia dos Pescadores, na cidade de Caraguatatuba - SP, em três turmas do terceiro ano do Ensino Médio, perfazendo um total de 119 educandos, entre 16 e 19 anos. Antes de iniciar-se a intervenção, um questionário de vinte perguntas objetivas e dissertativas foi desenvolvido, aplicado pelo professor da classe, que ministrou as aulas correspondentes. Este questionário foi o mesmo em todas as três classes com o objetivo de diagnosticar o conhecimento prévio dos alunos sobre Astronomia. Começando a intervenção nas turmas, o professor envolvido usou três diferentes metodologias de ensino: (A) em forma de seminários, elaborados e apresentados pelos alunos, nos quais o professor fazia apenas as intervenções necessárias, (B) na forma tradicional, com a ajuda de multimídia para o desenvolvimento das aulas e a terceira (C) a tradicional, fazendo uso exclusivo de lousa e giz. No final do trabalho os alunos responderam o mesmo questionário novamente, de modo que os três métodos utilizados puderam ser comparados. Os resultados apresentados após a intervenção foram melhores que os resultados iniciais indicando a ocorrência de uma aprendizagem significativa. Quando os estudantes foram inicialmente questionados sobre quantos planetas existem no nosso sistema solar, a classe A obteve 39% de respostas certas, a classe B 48% e a classe C 46%, mas após o desenvolvimento das atividades, as classes obtiveram respectivamente 94%, 97 % e 90% de aproveitamento. No término do bimestre, foi sugerido aos educandos que elaborassem uma história em quadrinhos, a qual serviu para averiguar se os conceitos inicialmente observados foram alterados e se novos foram agregados. A análise das histórias foi dividida em três partes: Criatividade; Temas abordados; Emprego correto dos conceitos estudados. Ao final quatorze histórias foram confeccionadas. O aprendizado foi tão significativo que os alunos produzira m histórias em quadrinhos, com informações muito ricas. Outro dado muito importante é que, apesar da Astronomia ser um tema amplamente recomendado, não é ensinado nem em escolas de ensino fundamental nem no ensino médio.

Voelzke, Marcos Rincon; Albrecht, Evonir

2011-12-01

17

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

18

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

19

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

20

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

21

Crescimento ponderal de filhotes de tartaruga gigante da Amazônia (Podocnemis expansa) submetidos a tratamento com rações isocalóricas contendo diferentes níveis de proteína bruta  

Microsoft Academic Search

RESUMO - A criação de Podocnemis expansa, a tartaruga-da-amazônia, com finalidade comercial foi implantada no Brasil em 1992. Contudo, muitas questões acerca do manejo, da nutrição, da sanidade e, principalmente, da reprodução ainda são obscuras. Visando contribuir para o desenvolvimento de uma metodologia alimentar da espécie, objetivou-se testar diferentes níveis de proteína da dieta. Uma amostra de 480 animais neonatos

Vinicius Augusto Sá; Leonardo C. Quintanilha; Gustavo Eduardo Freneau; Vera Lucia Ferreira Luz; Arcádio de Los Reyes Borja; Paulo César Silva

2004-01-01

22

Bacteria of the genus Aeromonas in different locations throughout the process line of beef slaughtering Bactérias do gênero Aeromonas em diferentes pontos do fluxograma de abate bovino  

Microsoft Academic Search

Resumo: Com o objetivo de verificar a ocorrência e a população de bactérias do género Aeromonas em diferentes pontos do fluxo- grama de abate bovino, em estabelecimento de alto nível higiéni- co-sanitário, foram investigados produtos e locais do fluxograma de abate, desde a chegada dos animais até a carne desossada e pronta para comercialização. Das 30 amostras colhidas em cada

CIÊNCIAS VETERINÁRIAS; O. D. Rossi Júnior; L. A. Amaral; A. Nader Filho; R. P. Schocken-Iturrino

23

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.

24

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

25

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

26

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

27

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

28

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

29

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

30

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

31

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

32

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

33

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

34

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

35

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

36

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

37

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

38

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

39

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

40

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

41

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

42

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

43

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

44

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

45

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

46

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

47

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

48

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.

49

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

50

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

51

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

52

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

53

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

54

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

55

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

56

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

57

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

58

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

59

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

60

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

61

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.

62

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

63

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

64

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

65

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

66

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

67

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

68

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

69

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

70

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.

72

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

73

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

74

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.

75

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

76

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

77

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

78

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

79

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

80

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

81

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.

82

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

83

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

84

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

85

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.

86

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

87

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

88

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.

89

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

90

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.

91

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

92

Investigación de Trichomonas vaginalis durante el embarazo mediante diferentes metodologías  

Microsoft Academic Search

Investigation of Trichomonas vaginalis through different methodologies during pregnancy. The aim of this study was to conduct a survey regarding the prevalence of trichomoniasis in pregnant patients and to evaluate the utility of different diagnostic methods. Two hundred and twenty three vaginal swab specimens from pregnant women were prospectively examined. Trichomonas vaginalis was investigated by various microscopic examinations, solid culture

B. PERAZZI; C. MENGHI; E. COPPOLILLO; M. CORA ELISEHT; C. VAY; O. MÉNDEZ; A. FAMIGLIETTI

93

Germinação de Sementes de Forrageiras em Diferentes Profundidades de Semeadura  

Microsoft Academic Search

3 Aluno de graduação em Agronomia - UNIFENAS Abstract: The experiment was conducted at José do Rosário Vellano University - UNIFENAS, in Alfenas, MG, with the purpose of evaluating the germination of forage seeds at different sowing depths. The experimental design was in randomized blocks with three replicates, four forages plants and four sowing depths being utilized, amounting to 20

Adauton Vilela de Rezende; Hélio Henrique Vilela; Geraldo Benedito de Souza Almeida; Paulo Roberto; Correa Landgraf; Gustavo Augusto Andrade; Paulo de Figueiredo Vieira

94

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

95

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

96

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

97

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

98

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

99

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

100

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

101

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.

102

MEDICIÓN DE LA FUNCIÓN DE DISTRIBUCIÓN BIDIRECCIONAL DE TRANSMITANCIA Y LA FUNCIÓN DE TRANSFERENCIA DE MODULACIÓN PARA MATERIALES DIFUSORES ASSESSMENT OF BIDIRECTIONAL TRANSMISSION DISTRIBUTION FUNCTIONS (BTDF) AND THE MODULATION TRANSFERENCE FUNCTION (MTF) FOR DIFUSSIVE MATERIALS  

Microsoft Academic Search

Las mediciones tradicionales de transmitancia resultan insuficientes para caracterizar ópticamente el comportamiento de materiales difusores en diferentes aplicaciones. En este trabajo se describe, por una parte, la implementación de un sistema de medición de la función de distribución bidireccional de transmitancia (BTDF), que en este caso se identifica con la función de punto extendido (PSF), de diferentes muestras de materiales

Corregidor Diego; Jaén Mirta; Sandoval José

103

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

104

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

105

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

106

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

107

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

108

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

109

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

110

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

111

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

112

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

113

AVALIAÇÃO DE DIFERENTES PORTA-ENXERTOS DE CITRUS CULTIVADOS EM CITROPOTES1  

Microsoft Academic Search

This work, carried out under nursery conditions, evaluated the development of five rootstocks grown in potted citrus with 7 liters of substrate. The analyzed variables were: dry matter production, stem diameter at 10 cm above ground, mineral composition, and macronutrients contents (N, P, K, Ca, Mg and S). The experimental design was a completely randomized blocks, in a 4 x

ADÔNIS MOREIRA; RONALDO ALBERTO; DUENHAS CABRERA; ALEXANDRA CARDOSO; JANICE GUEDES DE CARVALHO

114

Gravidade especifica e massa seca de batatas cultivadas sob diferentes adubações destinadas à indústria  

Microsoft Academic Search

3 UNIFEG, Departamento de Biologia, Guaxupé, MG. ABSTRACT: Specific gravity and dry matter of potato tuber to industrial under different fetilizations. The Physio-chemical characteristics of the potato during processing influences on the output and product quality and are modified by the availability of nutrients in the soil. This research was conducted to study the behavior of potato cultivars for industrial

Marcelo Bregagnoli; Keigo Minami; Flavia Cecílio Riberio Bregagnol

115

Análise comparativa do isolamento do ruído aéreo entre diferentes painéis de vedação utilizados no Brasil  

Microsoft Academic Search

RESUMO: O artigo aborda a avaliação do isolamento acústico de painéis de vedação que vem sendo utilizados no Brasil. Os painéis que surgem como alternativa à alvenaria convencional e o seu uso indiscrimado, sem uma avaliação dos requisitos mínimos de desempenho, são o principal objetivo deste trabalho. A análise dos resultados do índice de isolação sonora é feita através do

Danielly Borges

116

Qualidade de mudas de alface formadas em bandejas de isopor com diferentes números de células  

Microsoft Academic Search

Lettuce seedling quality using polystirene trays with different cell numbers Lettuce cultivar Vera seedling production and performance in the field were tested using three different types of polystirene trays. The experiment for seedling production was set on randomized complete block design. For field evaluations the experimental design was completely randomized. At 26 days after sowing date, root size and leaf

Patrícia Angélica; A. Marques; Pedro Veridiano Baldotto; Ana Cláudia; P. Santos; Leandro de Oliveira

117

Prevalência de sobrepeso e obesidade em crianças e adolescentes de diferentes condições socioeconômicas  

Microsoft Academic Search

Objectives: to compare overweight and obesity in preschool children, school children and adolescents belonging to different socioeconomic conditions. Methods: cross-sectional and based on a 1616 children and adolescents sample. Nutritional indica- tors were defined according to the National Center of Health Statistics 2000 recommendations, overweight being BMI equal to or above 85 percentile and below percentile 95; obesity indicator being

A. Recife

118

Avaliação de diferentes coberturas do solo no controle da erosão em taludes de estradas florestais  

Microsoft Academic Search

RESUMO: O objetivo do trabalho foi avaliar técnica e economicamente três tipos de cobertura orgânica quanto à proteção de um talude de estrada de 85% de declividade média contra o processo erosivo e conseqüentes perda de solo e assoreamento de cursos d'água. Os tratamentos empregados foram: (1) Tratamento A: testemunha, solo descoberto; (2) Tratamen- to B: placas de grama \\

Cintia Rodrigues de Souza; Fernando Seixas

119

TEXTURA INSTRUMENTAL DE QUEIJO PETIT-SUISSE POTENCIALMENTE PROBIÓTICO: INFLUÊNCIA DE DIFERENTES COMBINAÇÕES DE GOMAS 1  

Microsoft Academic Search

SuMMArY INSTRUMENTAL TEXTURE OF PROBIOTIC PETIT-SUISSE CHEESE: INFLUENCE OF DIFFERENT COMBINATIONS OF GUMS. The effect of different combinations of gums over texture parameters of probiotic petit-suisse cheese was evaluated. Petit-suisse cheeses were produced using Quark cheese-base prepared with the starter Streptococcus thermophilus and the probiotics Lactobacillus acidophilus and Bifidobacterium longum . Three formulations of petit-suisse were prepared, using the quark

Larissa Yukie MARUYAMA; Haíssa Roberta CARDARELLI; Flávia Carolina; Alonso BURITI; Susana Marta; Isay SAAD

2006-01-01

120

Caracterização fisiológica, cultural e patogênica de diferentes isolados de Lasiodiplodia theobromae  

Microsoft Academic Search

Physiological, cultural and pathogenic characterization of different isolates of Lasiodiplodia theobromae \\/DVLRGLSORGLDWKHREURPDHLVUHVSRQVLEOHIRUGLVHDVHVLQVHYHUDOFXOWLYDWHGSODQWV??FDXV LQJVLJQLøFDQWORVVHVLQSURGXFWLRQ?? particularly among fruit trees in the Brazilian Northeast. Basic studies on this fungus are necessary to understand better the pathogen-host interactions and to trace control strategies. This work aimed to characterize eight isolates of \\/??WKHREURPDH from different hosts, accessing the mycelial growth, pycnidium production and fertility, morphological

Aurenice L. Pereira; Gilson S. Silva; Valdenir Q. Ribeiro

2006-01-01

121

Estatura de padres e hijos chilenos de diferente etnia y vulnerabilidad social  

Microsoft Academic Search

Objective. To analyze and compare the heights of first- year school children and their parents, according to ethnic background and socioeconomic status. Material and methods. This is a cross-sectional study of indigenous and non-indigenous school children and their parents, belong- ing to three levels of social vulnerability: very high (pover- ty), medium, and very low. An indigenous school child was

Hugo Amigo; Marcia Erazo; Patricia Bustos

2000-01-01

122

Prevalencia de Candida albicans y Candida no albicans en diferentes muestras clínicas. Período 1999-2001  

Microsoft Academic Search

SUMMARY Prevalence of Candida albicans and Candida no albicans in clinical samples during 1999-2001. The importance of epidemiological monitoring of yeasts involved in pathologic processes is unquestionable due to the increase of these infections over the last decade, the changes observed in species causing candidiasis, and empirical antifungal treatment. At the Mycology Center, 1006 isolates from a wide range of

M. T. MUJICA; J. L. FINQUELIEVICH; V. JEWTUCHOWICZ; C. A. IOVANNITTI

123

Avaliação da Perda Endógena de Aminoácidos, em Função de Diferentes Níveis de Fibra para Suínos1  

Microsoft Academic Search

The experiment was carried out with the objective of evaluating the ileal endogenous losses of amino acids in function of different fiber levels inclusion in a free protein diet. Were used eight crossbreed swine, castrated males, averaging 50.17 ± 4.10 kg initial weight, submitted previously to the simple T canula surgery implantation, allotted to a randomized blocks design, with four

Paulo Cesar Pozza; Paulo Cezar Gomes; Horacio Santiago Rostago; Juarez Lopes Donzele; Magali Soares dos Santos; Rony Antônio Ferreira

124

TEMPERATURA SUPERFICIAL E ÍNDICE DE TOLERÂNCIA AO CALOR DE CAPRINOS DE DIFERENTES GRUPOS RACIAIS  

Microsoft Academic Search

One aimed with this work to determine the superficial temperature and the index of tolerance to the heat of goats (F1) resultants of crossings among these breed, Boer, Savanna, Kalahari, Anglo Nubiana and Moxotó, with goat in no definite breed of the northeast area. Thirty goats were used, with medium age of six months and medium weight of 25,17kg being

Bonifácio Benicio de Souza; Expedito Danusio de Souza; Marcílio Fontes Cezar; Wandrick Haus de Souza; José Romulo; Soares dos Santos; Talícia Maria Alves Benicio

125

ESTUDIO MESOMECÁNICO DE LA FRACTURA DEL HORMIGÓN PARA DIFERENTES VELOCIDADES DE CARGA  

Microsoft Academic Search

Resumen. En este artículo se analiza el comportamiento del hormigón a un nivel mesomecánico de observación bajo cargas de tracción uniaxial dependientes del tiempo. Como punto de partida se ha empleado un modelo mesoestructural en 2D para materiales heterogéneos basado en elementos junta de espesor nulo, desarrollado dentro del grupo de investigación de la ETSECCPB-UPC. En este modelo, la estructura

Ricardo Lorefice; Guillermo Etse; Carlos M. López; Ignacio Carol

126

"Diferente Desde Aqui": Twenty-Four Ways of Looking at Religious Education  

ERIC Educational Resources Information Center

This article presents an overview of how "Christian religious education" as a "polydoxical" discipline is being taught, based on a survey of 24 syllabi of graduate courses offered by scholars teaching in Mainline Protestant, Evangelical Protestant, and Catholic theological schools. The review offers an account of how the scholars frame the…

Tran, Mai-Anh Le

2011-01-01

127

AVALIAÇÃO DA AMPLITUDE ELETROMIOGRÁFICA DO MÚSCULO DELTÓIDE EM DIFERENTES FAIXAS ETÁRIAS  

Microsoft Academic Search

The aim of this study was to evaluate the myoelectrical activation pattern from anterior, middle, and posterior parts of the deltoid muscle in two different age groups, during the dynamic shoulder scaption and variable humerus rotation. Twenty right-handed sedentary female volunteers were selected for this study. They were divided into two age groups: Group 1 (n = 10) mean aged

Anamaria Siriani de Oliveira

128

QUALIDADE FISIOLÓGICA DE SEMENTES DE MILHO-DOCE SUBMETIDAS À DEBULHA, COM DIFERENTES GRAUS DE UMIDADE  

Microsoft Academic Search

Sweet corn seeds, BR 400 (Superdoce) cultivar, with 17.4, 15.1, 13.4, 11.7 and 9.1% moisture contents (wet basis), were manually and mechanically threshed with the thresher cylinder at 250 rpm. The seeds collected in the superior discharge of the gravity table were evaluated for germination, vigor and moisture content at the beginning of storage and after 12 months of storage

EDUARDO FONTES ARAÚJO; JOÃO CARLOS; CARDOSO GALVÃO; GLAUCO VIEIRA MIRANDA; E ROBERTO FONTES ARAÚJO

129

Prevalencia de diferentes tipos de violencia en usuarias del sector salud en México  

Microsoft Academic Search

Objective. To identify the prevalence of violence against females among those who are health service beneficiaries in Mexico. Material and Methods. The National Survey on Violence against Women (ENVIM, per its Spanish abbre- viation) was applied in 2003 to female users of public pri- mary and secondary health care services. The sampling framework was based on a stratified, probabilistic sample

Gustavo Olaiz; Rosalba Rojas; Rosario Valdez; Aurora Franco; Oswaldo Palma

2006-01-01

130

Las unidades habitacionales y la vivienda en la ciudad de Morelia: apropiación de los espacios abiertos  

Microsoft Academic Search

La apropiación del espacio libre en las unidades habitacionales, genera conflicto y tensión social, por los habitantes- usuarios que crean y desarrollan una cultura urbana; expresada en sus vivencias, que van de lo individual a lo colectivo, de lo privado a lo público; haciendo de los espacios abiertos un lugar diferente. Los habitantes- usuarios buscan la identificación con su espacio,

Pedro Lina Manjares; Ana Rosa Velasco Ávalos

2007-01-01

131

Efecto de la irradiación luminosa en la aclimatación de Mammillaria carmenae Castañeda (Cactaceae) proveniente de cultivo in vitro  

Microsoft Academic Search

Resumen Se reprodujo Mamillaria carmenae por cultivo in vitro a partir de areolas de una planta etiolada in vivo. Se obtuvieron plantas a partir de callos, las cuales se aclimatizaron bajo diferentes tratamientos de irradiación luminosa (50, 150 y 970 µmol m -2 s -1 ) bajo condiciones de invernadero. Durante la acli- matación se registraron la variación en el

Coca Soriano; Ortiz Montiel; Juan Gerardo; Sánchez Correa; Pérez Crisanto Joel

132

Efectos heterogéneos del trabajo infantil en la adquisición de habilidades cognitivas  

Microsoft Academic Search

El estudio se ocupa de los efectos heterogéneos del trabajo en la formación de capital humano a través de una definición amplia de trabajo que incluye toda actividad asociada a responsabilidades no escolares. Dada la variedad de responsabilidades asumidas por niños y adolescentes peruanos, se toma en cuenta dos criterios para clasificar los diferentes tipos de trabajo: el tipo de

Carmen Ponce

2012-01-01

133

Diseño de la cadena de suministro de los productos alimenticios que demanda la dirección de alimentación de la Universidad Central de Las Villas  

Microsoft Academic Search

La Dirección de Alimentación de la Universidad Central Marta Abreu de las Villas es la encargada de elaborar y abastecer los alimentos que se consumen en las diferentes dependencias que se destinan para el consumo. Dicha dirección adolece de un desempeño adecuado debido, entre otros aspectos, a la falta de integración, coordinación y racionalidad en sus procesos por carecer de

Manley Torriente Jackson

2011-01-01

134

La visión global de la utilidad  

Microsoft Academic Search

Resu men En el presente documento se aborda el concepto y teorías de la Utilidad, en él, se consideran los desarrollos que han tenido a través de la historia, las diferentes visiones según las disciplinas del conocimiento; pero reviste especial importancia los aportes hechos por la filosofía, la economía y las matemáticas. En su análisis es de vital importancia la

José Zacarías Mayorga Sánchez

2010-01-01

135

Modernização Agrícola Francesa: a construção de um modelo analítico  

Microsoft Academic Search

Este artigo investiga o processo de modernização agrícola na França por meio das interpretações dos economistas, dos sociólogos e dos cientistas políticos, envolvendo especialmente o debate da sociologia e da economia rural contemporâneas. O objetivo é compreender a sua dinâmica específica pelo cruzamento entre diferentes áreas das Ciências Sociais com o intuito de construir um modelo interpretativo para a análise

Angelica Massuquetti

2008-01-01

136

ASSEMBLÉIAS DE TELEÓSTEOS DEMERSAIS NO TALUDE DA COSTA CENTRAL BRASILEIRA  

Microsoft Academic Search

o \\/h) e as matrizes de espécies por estação foram submetidas à análise de agrupamento e ordenação das amostras com base no índice de dissimilaridade de Bray-Curtis. Os dados indicaram a formação de distintas assembléias de espécies que representaram as diferentes regiões do talude ao longo da área de estudo. Variações significativas foram observadas entre médias e amplitudes de profundidade,

PAULO A. S. COSTA; ADRIANA C. BRAGA; MARCELO R. S. MELO; GUSTAVO W. A. NUNAN; AGNALDO SILVA MARTINS; GEORGE OLAVO

137

Erosão em compósitos à base de fibras de vidro\\/kevlar e resina epóxi de uso aeronáutico  

Microsoft Academic Search

Resumo: Este trabalho tem como objetivo principal o estudo e a análise da eficiência de dois diferentes tipos de recobrimentos usados na proteção contra o processo de desgaste por erosão em substratos fabricados em materiais compósitos poliméricos de uso aeronáutico, dando ênfase às peças fabricadas em fibras de vidro \\/ kevlar impregnadas com resina epóxi. Revestimentos protetores baseados em um

Rogério A. Silva; Mirabel C. Rezende

2003-01-01

138

SENSIBILIDAD IN VITRO DE AISLADOS DEL HONGO PHYTOPHTHORA CAPSICI A FUNGUICID AS  

Microsoft Academic Search

RESUMEN En el cultivo de chile, la incidencia de la enfermedad marchitez del chile causada por el hongo oomyceto Phytophthora capsici Leo., constituye a nivel nacional, uno de los principales problemas que afectan la productividad del cultivo. El presente estudio tuvo como objetivo: conocer la respuesta de 14 aislados de Phytophthora capsici a diferentes fungicidas. Los fungicidas utilizados fueron azoxystrobin,

Luis Pérez-Moreno; Luisa Josefina Durán-Ortiz; Rafael Ramírez-Malagón; Jesús Ricardo Sánchez-Pale; Víctor Olalde-Portugal

139

Síntesis y caracterización de materiales híbridos orgánico-inorgánicos de APS\\/PDMS  

Microsoft Academic Search

El uso de 3-aminopropiltrietoxi silano (APS) como precursor inorgánico en la síntesis de materiales híbridos, en sustitución de otros alcóxidos tradicionales como el tetraetilortosilicato (TEOS), abre la posibilidad de incorporar grupos amino reacti- vos en la red tridimensional. Estos grupos pueden ser utilizados para anclar diferentes compuestos orgánicos al material. Por otro lado, la rápida velocidad de hidrólisis del APS,

I. GARCÍA-PERULERO; S. MURCIA-MASCARÓS; J. RUBIO; J. L. OTEO

140

MODELO MATEMÁTICO PARA ESTIMAR EL ESPACIAMIENTO ENTRE DRENES SUBTERRÁNEOS EN RÉGIMEN TRANSITORIO Mathematical Model for Estimating Spacing Between Subterranean Drains in Transitory Regime  

Microsoft Academic Search

Para el diseño de sistemas de drenaje subterráneo existen diferentes modelos, tanto para régimen permanente, como transitorio; sin embargo, la mayoría de ellos no se han obtenido para condiciones de suelo y clima semiáridas. Por lo tanto, este trabajo tuvo como objetivo desarrollar una ecuación empírica para régimen transitorio que permitiera determinar el espaciamiento entre drenes paralelos, considerando los intervalos

Pablo Miguel Coras-Merino

2006-01-01

141

Competencia entre estímulos condicionales propioceptivos y exteroceptivos en una tarea de discriminación condicional  

Microsoft Academic Search

Se realizó un experimento con sujetos humanos de edades comprendidas entre los 7 y los 53 años en el que se utilizó un procedimiento de discriminación condicional con muestras compuestas formadas por estímulos exteroceptivos (figuras geométricas coloreadas) y propioceptivos (diferentes formas de señalar tales figuras). De esta forma, los sujetos fueron entrenados a emitir una conducta diferencial ante cada muestra

María Teresa Rodríguez García; Andrés García García; María Teresa; Gutiérrez Domínguez; Vicente Pérez Fernández; Cristóbal Bohórquez Zayas

2009-01-01

142

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

143

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

144

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

145

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

146

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

147

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

148

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

149

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

150

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

151

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

152

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

153

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

154

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

155

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

156

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

157

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

158

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

159

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

160

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

161

Discusión de las aproximaciones utilizadas en el estudio de la recombinación dielectrónica de los metales en envolturas estelares  

NASA Astrophysics Data System (ADS)

Se calcularon nuevos parámetros atómicos del MgI reemplazando los niveles de energía teóricos por los observados. Con ellos se calculó nuevamente el flujo originado en la Recombinación Dielectrónica (RD) del MgII y se comparó con resultados anteriores. Se evaluó también la posible influencia de diferentes fuentes de opacidad, en el flujo originado en la RD de los metales en atmósferas extendidas de estrellas tempranas. En particular, se calculó la profundidad óptica de las líneas de MgI para diferentes condiciones físicas del medio.

Cruzado, A.; di Rocco, H. O.; Ringuelet, A.

162

Efeitos de diferentes concentrações de nitrogênio no crescimento de Aechmea blanchetiana (Baker) L.B. Sm. cultivada in vitro  

Microsoft Academic Search

Effects of nitrogen concentrations on the growth of Aechmea blanchetiana (Baker) L.B. Sm. cultured in vitro). This work aimed to study the influence of different nitrogen concentrations (7.5; 15; 30; 60 and 120 mM) on the growth of Aechmea blanchetiana plantlets cultivated in vitro. The results showed that 7.5 mM of nitrogen in a modified liquid culture Murashige & Skoog

Shoey Kanashiro; Antonio Natal Gonçalves; Carlos Tadeu; Teresa Jocys

163

Teor de matéria seca, pH e amônia volatilizada da cama de frango tratada ou não com diferentes aditivos  

Microsoft Academic Search

The aim of this experiment was to determine the dry matter content, pH and the volatilized ammonia from the poultry litter treated or not with different additives. Four hundred and forty birds were used, in randomized block design, with five treatments (1 - new litter; 2 - reused litter (RL); 3 - RL treated with aluminum sulfate; 4 - RL

Maria Cristina de Oliveira; Clayton Vieira Almeida; Dalton Oliveira Andrade; Stella Maris Marino Rodrigues

2003-01-01

164

Caracterización de cepas de Listeria monocytogenes realizados a partir de queso fresco proveniente de diferentes zonas productoras costarricenses  

Microsoft Academic Search

SUMMARY. Characterization of Listeria monocytogenes isolates obtained from raw cheese samples acquired from different Costa Rican producer zones. In Costa Rica, almost 25% of the national milk production is used for the elaboration of non pasteurized soft cheese, and the annual intake of this product is around 4-5 kg per capita. This product has been identified as the source of

Carolina Chaves; María Laura Arias

165

Efeito de diferentes níveis de sombreamento sobre o crescimento inicial de Jatropha curcas L. em casa de vegetação5  

Microsoft Academic Search

This work aimed getting information about the best luminosity to improve the initial growth of Jatropha curcas L. plants. The study was carried out during six month in the green house of Faculdade Salesiana de Vitória, ES, Brazil. Plants, obtained from seed germination and one month old, were submitted to four different shading levels (40%, 50%, 70% e 87%). The

Rosemary B Sesma; Valdir G Demuner; Selma A Hebling

166

Influência da monensina sódica no consumo e na digestibilidade de dietas com diferentes teores de proteína para ovinos1  

Microsoft Academic Search

The objective of this trial was to evaluate the effect of monensin in the apparent digestibility of nutrients in diets with different levels of CP. Twenty-five castrated rams were housed in metabolism cages for 20 days and fed diets with 11.4 or 16.5% of CP (% DM) supplemented or not with 28 mg of monensin\\/kg of DM. Diets contained 65%

Marcus Vinícius; Morais de Oliveira; Rogério de Paula Lana; Eduardo da Costa Eifert; Dirce Ferreira Luz; José Carlos Pereira; Juan Ramón Olalquiaga Pérez; Fernando Miranda de Vargas

167

Cinética de inativação de inibidores de tripsina e de insolubilização de proteínas de diferentes cultivares de soja  

Microsoft Academic Search

Soybean (Glycine max (L.) Merrill) is one of the most studied vegetables, due to its use as sources of edible oil and protein for human and animal feeding. The presence of trypsin inhibitors in soy grain restrict its utilization and requires heating to improve the nutritional quality. However, excessive heating may reduce the protein quality. Soybean cultivar BR-36 containing normal

Edna Mayumi Yuahasi Miura; Rui Sérgio dos Santos Ferreira da Silva; Ivone Yurika Mizubuti; Elza Iouko Ida

2005-01-01

168

Comportamiento no lineal de estructuras de concreto celular de autoclave diseñadas con diferentes factores de reducción de fuerzas sísmicas  

Microsoft Academic Search

The behavior of three Autoclaved Aerated Concrete (AAC) shear-wall structures subjected to earthquake ground motions representative of firm soils of Mexico City is evaluated. The AAC structures were designed using different seismic force-reduction factors to evaluate their influence on the maximum displacement ductility and drift ratio demands. The maximum demands were obtained from nonlinear analyses carried out using earthquake ground

Varela Rivera; Fernández Baqueiro; Bagundo Tec

2007-01-01

169

Estratificação vertical de bromélias epifíticas em diferentes estádios sucessionais da Floresta Ombrófila Densa, Ilha de Santa Catarina, Santa Catarina, Brasil  

Microsoft Academic Search

(recebido: 2 de junho de 2005; aceito: 9 de março de 2006) ABSTRACT - (Vertical stratification of epiphytic bromeliads on different stages of secondary succession of Atlantic Rainforest, in Santa Catarina Island, Santa Catarina, Brazil). The present study aims to characterize the distribution of bromeliads height preference at four sucessional stages (\\

ANNETE BONNET; HERING DE QUEIROZ

170

Estudo Reológico de Tintas de Poliuretano Contendo PAni-DBSA Aplicadas como Materiais Absorvedores de Microondas (8-12 GHz)  

Microsoft Academic Search

Resumo: Neste trabalho preparou-se tintas condutoras baseadas em blendas de poliuretano contendo polianilina em diferentes proporções. Estudou-se as influências do método de dopagem da polianilina (PAni) e do tempo de processamento da mistura no comportamento reológico da tinta. Verificou-se que a dopagem, com o ácido dodecilbenzeno sulfônico (DBSA), por processamento reativo (PAni-DBSA-pr) afetou, de maneira mais acentuada, a viscosidade da

Rogério S. Biscaro; Edson C. Botelho; Centro ITA; Técnico Aeroespacial; Marta F. K. Takahashi

2002-01-01

171

¡Helados!  

NSDL National Science Digital Library

En esta tira cómica, Mateo y Cientina emplean su conocimiento de la química y las medidas para esta actividad deliciosa - ¡hacer helado! En hacer la actividad los participantes experimentarán las causas y efectos por cambiar las medidas de los ingredientes para ver los diferentes resultados en su helado. También aprenderán lo importante que es seguir instrucciones para que todo quede sabroso.

Science, Lawrence H.

2009-01-01

172

Atlas del Genoma del Cáncer  

Cancer.gov

Es posible que haya más de 200 tipos diferentes de cáncer y muchos subtipos más, cada uno de estos causado por errores en el ADN que desencadenan el crecimiento descontrolado de las células. La identificación de los cambios en el conjunto completo de ADN de cada tipo de cáncer, su genoma, y el entendimiento de cómo interactúan dichos cambios para impulsar el proceso de la enfermedad sentarán las bases de una era individualizada de tratamiento del cáncer.

173

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

174

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

175

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

176

Movimiento regular y caótico en cúmulos globulares  

NASA Astrophysics Data System (ADS)

Los cúmulos globulares exhiben diferentes grados de elipticidad y se mueven en el campo gravitatorio de la galaxia a la que pertenecen. Las órbitas de sus estrellas no necesitan, por ello, conservar la energía ni el momento angular, y resulta probable la presencia de movimientos caóticos. Como paso preliminar de una investigación más extensa, presentamos aquí los resultados de un estudio de órbitas estelares en un cúmulo globular levemente triaxial que describe una órbita circular dentro de una galaxia. Las órbitas se investigan utilizando dos métodos: 1) La clasificación por frecuencias de D.D. Carpintero y L.A. Aguilar (1998, MNRAS, en prensa), y 2) Los exponentes de Lyapunov (subrutina LIAMAG, gentilmente suministrada por D. Pfenniger). Utilizando diversos espacios de condiciones iniciales, investigamos las familias de órbitas de las estrellas del cúmulo. Confirmamos la presencia de órbitas caóticas, particularmente en las zonas externas del cúmulo, y discutimos su importancia para la estructura del cúmulo.

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

177

Degradabilidade ruminal in situ da matéria seca e proteína bruta de duas variedades de grão de soja com diferentes teores de inibidor de tripsina, em bovinos  

Microsoft Academic Search

RESUMO - Foram utilizados quatro bovinos da raça holandesa canulados no rúmen, distribuídos em blocos, ao acaso, alimentados a pasto de coast-cross (Cynodon dactylon). Os animais foram suplementados com ração concentrada contendo grãos de soja moídos colocados no rúmen, às sete e às dezoito horas. Em todos os animais foram incubados sacos de náilon com amostras de cada tratamento: grãos

Leandro das Dores Ferreira da Silva; Bruno Mazzer de Oliveira Ramos; Edson Luis de Azambuja Ribeiro; Ivone Yurika Mizubuti; Marco Antônio da Rocha; Fábio Lucas Zito de Moraes

2002-01-01

178

Relación entre el potencial zeta y la deposición en el lavado de impurezas sólidas sobre tejidos de algodón, poliéster y poliéster-algodón tratados con diferentes aprestos  

Microsoft Academic Search

Deposition of solid impurities of textile substrates, in washing, is due to different causes which can be of mechanical, chemicai, electrical or adsorption origin.\\u000aThe electrical phenomenon is studied by the electrokinetic potential or zeta potential. This potential depends on the fibre surface and the polar medium in which in steeped. For this reason, we used cotton, polyester, and polyester-cotton

Francisco Javier Carrión Fité; José Ribé Pons

1970-01-01

179

INFLUÊNCIA DO ESTRESSE HÍDRICO NOS PARÂMETROS DE CRESCIMENTO, ACÚMULO DE N E PRODUTIVIDADE DE DIFERENTES VARIEDADES DE CANA-DE-AÇÚCAR EM MIRACEMA - RJ  

Microsoft Academic Search

SHIGAKI, F.; FREITAS, N.; BERTO A.; CEDDIA, M. B.; ZONTA, E.; LIMA, E. Hydrous stress influence in growth parameters, N accumulation and productive in different varieties of sugar cane in Miracema - RJ. Revista Universidade Rural: Série Ciências da Vida, Seropédica, RJ: EDUR, v.24, n.1, p. 63-71, jan.- jun., 2004. To verify hydric stress influence in growth parameters, N accumulation

FRANCIROSE SHIGAKI; NATHALIA FREITAS; ANDREA BERTO; MARCOS BACIS CEDDIA; EVERALDO ZONTA; EDUARDO LIMA

2004-01-01

180

LA BÚSQUEDA DE UN MUNDO DIFERENTE. LA REPRESENTACIÓN SOCIAL QUE DETERMINA LA TOMA DE DECISIONES EN ADOLESCENTES MEXICANOS USUARIOS DE DROGAS ILEGALES  

Microsoft Academic Search

Introduction: The main study's premise was the conceptualization that drug users make decisions based on non-arbitrary reasoning. On the contrary, such decisions seem to rely on common sense based on: lay knowledge; socially shared beliefs and attitudes; and experiences and affectivities that give meaning to their actions. Drug consumption itself seems to be a social practice underlied by several decisions

Bertha Lidia; Nuño Gutiérrez; Fátima Flores Palacios

2004-01-01

181

Length assessment of titanium dental implants using different tomographic images * Medida do comprimento de implantes de titânio utilizando diferentes imagens tomográficas  

Microsoft Academic Search

Since the introduction of endosseous dental implant, diagnosis methods using images have been considered of great value. The anatomical structures of the elected area, the wells the relationship with adjacent tissues needs to be completely clears in the planning of implants, so it's necessary to have accurate dimensions in the images of all anatomical structures involved. The aim of the

Heraldo LEPÉRA; Edmundo MÉDICI FILHO; Luiz Cesar de MORAES; Gustavo Nogara DOTTO

182

Artigo Original Avaliação ultra-sonográfica da mobilidade do diafragma em diferentes posturas em sujeitos saudáveis* Ultrasound evaluation of diaphragmatic mobility in different postures in healthy subjects  

Microsoft Academic Search

Objective: To assess, using ultrasound, the effects that changes in body position have on diaphragmatic mobility in healthy subjects during spontaneous breathing. Methods: The study involved seven healthy female volunteers, all of whom were nonsmokers, well nourished, and free of any cardiopulmonary disease. They were submitted to pulmonary function testing and ultrasound evaluation of the mobility of the right diaphragm

Wellington Pereira; Santos Yamaguti; Elaine Paulin; Simone Shibao; Sérgio Kodaira; Maria Cristina Chammas; Celso Ricardo; Fernandes Carvalho

2007-01-01

183

Analise clinico laboratorial de 168 pacientes com galactorreia de diferentes condicoes etiologicas. (Clinical laboratorial analysis of 168 patients with galactorrhea from different etiologic conditions).  

National Technical Information Service (NTIS)

This paper evaluated the data of 168 patients with galactorrhea throught factorial analysis. This method consists, initially, of an intercorrelation analysis, which serves as a base for the determination of a number of factors, one of them, which could be...

I. H. F. Pacheco

1984-01-01

184

QUALITY OF FRESH-CUT AVOCADO (Persea americana Mill.) STORED UNDER DIFFERENT TEMPERA TURES Qualidade de abacates (Persea americana Mill.) minimally processados armazenados sob diferentes temperaturas  

Microsoft Academic Search

The goal of this work was to evaluate the effect of different storage temperatures on the quality maintenance of fresh-cut 'Fortuna' avocado (Persea americana Mill.). The fruit was selected, washed and sanitized with sodium hypochlorite solution (190 ppm total residual chlorinee) for 15 minutes. After that, the tip was cut and the fruit was also cut in halves, peeled and

Ana Carla; Marques Pinheiro; Eduardo Valério de Barros; Vilas Boas; Lucas Carvalho e Silva; Alessandra de Paiva Alves; Marcelo La Selva; Adimilson Bosco Chitarra

185

CINÉTICA ENZIMÁTICA DE LA POLIFENOL OXIDASA DEL BANANO GROS MICHEL EN DIFERENTES ESTADOS DE MADURACIÓN ENZYME KINETICS OF POLYPHENOL OXIDASE FROM GROS MICHEL BANANA THROUGH DIFFERENT MATURATION STAGES  

Microsoft Academic Search

The post harvest of banana is accompanied by multiple enzymatic reactions, which cause the degradation of starches and chlorophyll, the synthesis of sugars and carotenes, changes in the acidity, tissue softening and enzymatic browning. This browning is caused by the action of the Polyphenoloxidase (PPO) on the phenols contained in the fruit and is considered an undesirable change by the

Germán A. GIRALDO; Hernando HURTADO; Carlos O. MENDIVIL

2006-01-01

186

AUMENTO DE LA VIDA POSTCOSECHA DEL LIMÓN MEXICANO (Citrus aurantifolia Swingle) PRODUCIDO EN APATZINGÁN, MICH., MEDIANTE EL USO DE RECUBRIMIENTOS NATURALES A DIFERENTES TEMPERATURAS DE ALMACENAMIENTO  

Microsoft Academic Search

Mexico is the first world producer of mexican lime (Citrus aurantifolia. Swingle). Lime fruits are highly demanded due their quality characteristics but are highly perishable too. Fruits shelf life is about 10-15 days under ambient conditions, changing color and swelling. Objective of this work was to evaluate different films for waxing (Mezquite gum, candelilla, mineral oil and emulsifiers) and storage

L. Olvera; J. Vernon

2003-01-01

187

NOTA TÉCNICA RENDIMIENTO DE UNA PLANTACIÓN COMERCIAL DE CACAO ANTE DIFERENTES DOSIS DE FERTILIZACIÓN CON NPK EN EL SURESTE DEL ESTADO TÁCHIRA, VENEZUELA  

Microsoft Academic Search

Effect of NPK fertilization on yield of a commercial cocoa plantation at the Southeast of Táchira State, Venezuela The low cocoa yields in Venezuela are associated with lack of fertilization. Two experiments were performed in a commercial plantation in the Southeast of Táchira State to determine the plant response to several doses of fertilization. The treatments were established based on

Dercy Parra; Erbert Gamboa; José Rincón

2005-01-01

188

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

189

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

190

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

191

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

192

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

193

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

194

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

195

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

196

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

197

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

198

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

199

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

200

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

201

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

202

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

203

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

204

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

205

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

206

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

207

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

208

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

209

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

210

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

211

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

212

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

213

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

214

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

215

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

216

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

217

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

218

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

219

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

220

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

221

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

222

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

223

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

224

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

225

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

226

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

227

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

228

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

229

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

230

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

231

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

232

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

233

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

234

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

235

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

236

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

237

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

238

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

239

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

240

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

241

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

242

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

243

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

244

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

245

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

246

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

247

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

248

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

249

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

250

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

251

Male courtship behavior in Ceratitis Capitata (Diptera: Tephritidae) that have received Aromatherapy with ginger root oil  

SciTech Connect

The results of previous studies that showed that exposing mass-reared male Mediterranean fruit flies Ceratitis capitata (Wiedemann) to ginger root oil ('aromatherapy') increases the likelihood of mating with wild females were confirmed. The increased male success could be due to female responses to changes in male behavior or male pheromones. There were no significant differences in the types of courtship movements executed by males with and without aromatherapy. The durations of movements also did not differ when mass-reared males were paired with mass-reared females; however, when they were paired with wild females, there were a few, small differences. Previous studies indicated that the effectiveness of the male long-distance attractant pheromone is not affected by aromatherapy, but these studies did not consider pheromones released at close range during courtship, which behavioral analyses suggest may be different. We propose the following possible explanation for the different effects of aromatherapy with different females. Selection on males under mass rearing may have altered their close-range pheromones in ways that can be remedied by aromatherapy; and only wild females respond because the pheromonal responsiveness of mass-reared females has also changed. We propose observations that could test these ideas. (author) [Spanish] Los resultados de estudios previos que muestran que al exponer machos criados en masa de la mosca mediterranea de la fruta Ceratitis capitata (Wiedemann) al aceite de la raiz del jengibre ('aromaterapia') aumento la probabilidad del apareamiento con hembras naturales fueron confirmados. El aumento en el exito de los machos puede ser debido a las respuestas de las hembras a los cambios en el comportamiento o feromonas de los machos. No hubo una diferencia significativa en la clase de los movimientos del cortejo ejecutados por los machos con y sin la aromaterapia. La duracion de los movimientos tampoco fue diferente cuando los machos criados en masa fueron apareados con hembras criadas en masa; sin embargo, cuando ellos fueron apareados con hembras naturales, resultaron unas pequenas diferencias. Los estudios previos indicaron que la eficacia de la feromona atrayente de machos de larga distancia no esta afectada por la aromaterapia, pero estos estudios no consideran las feromonas sueltas en un rango corto durante el cortejo, cuando el analisis de comportamiento sugiere que puede ser diferente. Nosotros proponemos la explicacion siguiente para los efectos diferentes de la aromaterapia con las diferentes hembras. La seleccion de machos bajo condiciones de cria en masa puede haber alterado las feromonas de rango corto de manera que puede ser remediada por la aromaterapia; y solamente las hembras naturales responden por que tambien ha cambiado la respuesta de las hembras criadas en masa a la feromona. Nosotros indicamos observaciones que pueden probar estas ideas. (author)

Briceno, D. [Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria (Costa Rica); Eberhard, W. [Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria (Costa Rica); Smithsonian Tropical Research Institute (Panama); Shelly, T. [USDA/APHIS/CPHST, 41-650 Ahiki St. Waimanalo, HI 96795 (United States)

2007-03-15

252

Discriminação de núcleos primários no Observatório Auger  

NASA Astrophysics Data System (ADS)

A identidade das partículas, com energias E > 10EeV, que geram chuveiros atmosféricos extensivos (CAE) na atmosfera terrestre é um incógnita. Existem diferenças sutis, mas apreciáveis entre chuveiros gerados por fótons e por núcleos, como temos demonstrado em trabalho recente. Porém entre os núcleos, as diferenças são tão sutis, que a baixa estatística e incertezas experimentais têm limitado fortemente sua diferenciação até o presente. Tal discriminação precede qualquer aplicação astrofísica mas sofisticada de raios cósmicos de ultra-alta energia. Apresentamos aqui os resultados do desenvolvimento de novos métodos de diagnóstico para a análise de CAEs com aplicação específica ao Experimento Pierre Auger. Redes neurais, combinadas com simulações numéricas detalhadas de CAEs e dos dois tipos diferentes de detectores (Cherenkov em água e de fluorescência atmosférica) presentes no experimento são empregados na análise. Mostraremos a capacidade dos métodos de diagnóstico desenvolvidos, para a discriminação de diversas distribuições hipotéticas de massa-anergia.

Tiba, A. K. O.; Medina Tanco, G. A.; Sciutto, S. J.

2003-08-01

253

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

254

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

255

Prediction and prevention of musculoskeletal injury: a paradigm shift in methodology  

PubMed Central

Traditional methods employed to study musculoskeletal injury mechanisms and joint biomechanics utilise in vivo or in vitro techniques. The advent of new technology and improved methods has also given rise to in silico (computer modelling) techniques. Under the current research paradigm, in vivo, in vitro and in silico methods independently provide information regarding the mechanisms and prevention of musculoskeletal injury. However, individually, each of these methods has multiple, inherent limitations and is likely to provide incomplete answers about multifactorial, complex injury conditions. The purpose of this treatise is to review current methods used to study, understand, and prevent musculoskeletal injury and to develop new conceptual-methodological frameworks that may help create a paradigm shift in musculoskeletal injury prevention research. We term the fusion of these three techniques in simulacra amalgama, or simply in sim, meaning a “union of models done on the likeness of phenomena.” Anterior cruciate ligament (ACL) injury will be employed as a model example for the utility and applicability of the proposed, synthesised approach. Shifting the current experimental paradigm to incorporate a multifaceted, multidisciplinary, integration of in vivo, in vitro and in silico methods into the proposed in sim approaches may provide a platform for a more comprehensive understanding of the relationships between complex joint biomechanics and observed injury mechanisms.

Quatman, C E; Quatman, C C; Hewett, T E

2014-01-01

256

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

257

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

258

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

259

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

260

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

261

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

262

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

263

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

264

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

265

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

266

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

267

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

268

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

269

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

270

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

271

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

272

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

273

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

274

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

275

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

276

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

277

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

278

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

279

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

280

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

281

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

282

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

283

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

284

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.

285

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

286

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

287

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.

288

EFEITO DE FUNGICIDAS SISTÊMICO E PROTET ORES APLICADOS EM DIFERENTES ESTÁDIOS FENOLÓGICOS NO CONTROLE DA FERRUGEM ASIÁTICA DA SOJA 1 Effect of protectant and systemic fungicides applied at different growth stages on the control of soybean asian rust  

Microsoft Academic Search

The aim of this work was to verify the effect of the fungicides dicopper chloride trihydroxide, thiophanate methyl, chlorothalonil+thiophanate methyl, chlorothalonil, and pyraclostrobin+epoxiconazole applied at the stages V6, R1, R5, V6+R1, V6+R5, R1+R5 on the control of the Asian rust and on the agronomic characteristics of the soybean. The experiment was carried out at the experimental area of the Agriculture

Jorge da Silva Júnior; Pedro Milanez de Rezende; Eudes de Arruda Carvalho; Eduardo Alves; Edson Ampélio Pozza

289

Alimentación de protozoeas del langostino Pleoticus muelleri Bate utilizando diferentes microencapsulados y especies de microalgas Feeding of protozoeal stages of the shrimp Pleoticus muelleri Bate with different microencapsulated food and microalgae species  

Microsoft Academic Search

The aim of this work was to obtain an adequate diet for the growth and survival of protozoeal stages of Pleoticus muelleri. Parabolic tanks of 10 liters were used and the shrimp were kept under controlled conditions of temperature, salinity and pH. Naupliar stages were stored at a density of 100 l-1. Different combinations of Chaetoceros gracilis, Tetraselmis chuii, dry

Juan C. Mallo; Jorge L. Fenucci

290

Inmovilizacion de residuos nucleares de alta actividad en vidrios sinterizados. Evaluacion del grado de desvitrificacion producido con diferentes tratamientos termicos. (Immobilization of high level nuclear wastes in sintered glasses. Devitrification evaluation produced with different thermal treatments).  

National Technical Information Service (NTIS)

This work describes immobilization of high level nuclear wastes in sintered glass, as alternative way to melting glass. Different chemical compositions of borosilicate glass with simulated waste were utilized and satisfactory results were obtained at labo...

N. B. Messi de Bernasconi D. O. Russo M. E. Bevilacqua M. E. Sterba A. D. Heredia

1990-01-01

291

Eficiência microbiana, fluxo de compostos nitrogenados no abomaso, amônia e pH ruminais, em bovinos recebendo dietas contendo feno de capim-tifton 85 de diferentes idades de rebrota  

Microsoft Academic Search

The microbial efficiency synthesis, the abomasum nitrogen compounds flow, the nitrogen compounds balance, the passage rate of ruminal digest, the ruminal ammonia concentration and ruminal pH in cattle fed diets containing Tifton 85 bermudagrass hay with different regrowth ages were evaluated. Four rumen and abomasum fistulated zebu cattle with average 340 kg LW were allotted in a 4x4 Latin square.

Karina Guimarães Ribeiro; Rasmo Garcia; Odilon Gomes Pereira; Sebastião de Campos Valadares Filho; Paulo Roberto Cecon

2001-01-01

292

PÉRDIDA DE SUELO, AGUA Y NUTRIENTES EN UN ACRISOL BAJO DIFERENTES SISTEMAS AGRÍCOLAS EN MICHOACÁN, MÉXICO * SOIL, WATER AND NUTRIENT LOSSES IN AN ACRISOL UNDER DIFFERENT AGRONOMIC SYSTEMS IN MICHOACAN, MEXICO  

Microsoft Academic Search

2 Campo Experimental Uruapan, INFAP, 3 IRD-Francia. 4 Instituto de Recursos Naturales. Colegio de Postgraduados. § Autor para correspondencia: ABSTRACT In the upper part of Cuitzeo Lake watershed, Michoacan, Mexico, farmers use a traditional short-fallow production system. With this system, land is sown one year, and left without cultivation from one to three years for grazing. This system is used

Lenin Ejecatl; Medina Orozco; Miguel Bravo Espinosa; Christian Prat; Mario Martínez Menes; Enrique Ojeda Trejo; Blanca Estela; Serrato Barajas

2008-01-01

293

EVALUACIÓN DEL CRECIMIENTO Y PRODUCCIÓN DE Pleurotus ostreatus SOBRE DIFERENTES RESIDUOS AGROINDUSTRIALES DEL DEPARTAMENTO DE CUNDINAMARCA EVALUATION OF GROWTH AND PRODUCTION OF Pleurotus ostreatus ON DIFFERENT AGROINDUSTRIALS WASTES OF CUNDINAMARCA  

Microsoft Academic Search

Resumen Se llevó a cabo la evaluación del cultivo de Pleurotus ostreatus, para determinar el residuo sobre el cual este hongo genera mejor crecimiento y producción. Los sustratos evaluados fueron residuos agroindustriales del departamento de Cundinamarca (capacho de uchuva, cáscara de arveja y tusa de maíz); teniendo como sustrato control el aserrín de roble. Las mezclas a evaluar fueron empacadas

Claudia López-Rodríguez; Ricardo Hernández-Corredor; Christian Suárez-Franco; Marta Borrero; Facultad de Ciencias

2008-01-01

294

Comparação entre três equações de referência para a espirometria em crianças e adolescentes com diferentes índices de massa corpórea* Comparison of three sets of reference equations for spirometry in children and adolescents with distinct body mass indices  

Microsoft Academic Search

Objective: To compare FEV 1 and FVC, calculated using three sets of reference equations (devised by Polgar & Promadhat, Hsu et al. and Mallozi in 1971, 1979 and 1995, respectively) and to determine whether the three are similar in predicting lung function in children and adolescents with distinct body mass indices (BMIs). Methods: The individuals were separated into four groups

Sarah Costa Drumond; Maria Jussara Fernandes Fontes; Marco Antônio Duarte; Joel Alves Lamounier; Maria da Glória; Rodrigues Machado

2009-01-01

295

Producción de forraje y componentes del rendimiento del pasto Brachiaria humidicola CIAT 6133 con diferente manejo de la defoliación Effect of defoliation management on herbage yield in Isleño grass (Brachiaria humidicola CIAT 6133)  

Microsoft Academic Search

In order to evaluate the effect of cutting height (9, 12, and 15 cm) and frequency (3, 4, and 5 wk -rainy season- and 5, 6 and 7 wk -dry and windy seasons) a randomized block design with a 3x3 factorial arrangement and three replicates was used to study Brachiaria humidicola attributes: herbage accumulation, growth rate (GR), leaf mass (LM),

Daniel Martínez Méndez; Alfonso Hernández Garay; Javier Francisco Enríquez Quiroz; Jorge Pérez Pérez; Sergio S. González Muñoz; José Guadalupe Herrera Haro

296

El compostaje como tecnologia para el tratamiento de residuos: compostaje de bagazo de sorgo dulce con diferentes fuentes nitrogenadas. (Composting as a waste treatment technology: composting of sweet sorghum bagasse with different nitrogen sources).  

National Technical Information Service (NTIS)

The purpose of this work is to study aerobic solid fermentation of sweet sorghum bagasse in mixture with other additives as nitrogen sources to evaluate the utilization of this material as a substrate for composting. The characteristics of sweet sorghum b...

J. Vicente J. E. Carrasco M. J. Negro

1996-01-01

297

Crescimento de mudas de espécies arbóreas nativas, adubadas com diferentes doses de lodo de esgoto seco e com fertilização mineral Native tree seedling growth when fertilized with different amounts of dry sewage sludge and mineral fertilizer  

Microsoft Academic Search

The increasing volume of urban sewage nowadays generates considerable amount of sludge to be dis- posed of. One environmentally adequate destination could be the application of treated and stabilized sludge (biosolids) to forest plantations as fertilizer and soil conditioner. The purpose of this study was to analyze the feasibility of applying sewage sludge, evaluating its effects on native tree seedlings.

Ary Vieira de Paiva; José Leonardo de Moraes; Alexandre de Vicente Ferraz

298

COMPORTAMIENTO DE LOS INDICADORES DE CONTAMINACIÓN FECAL EN DIFERENTE TIPO DE AGUAS DE LA SABANA DE BOGOTÁ (COLOMBIA) PERFORMANCE OF FAECAL CONTAMINATION INDICATORS IN DIFFERENT TYPE OF WATERS FROM THE SABANA OF BOGOTÁ (COLOMBIA)  

Microsoft Academic Search

The world's population is growing at such rate that not only the demands for water supply have raised considerably but also its contamination levels. Residues from domestic and industrial origin have generated environmental problems and public health issues. Water contamination coming from domestic origin, shows a higher risk because of the quantity of organic matter and the presence of pathogenic

Claudia Campos-Pinilla; Martha Cárdenas-Guzmán; Adriana Guerrero-Cañizares; Facultad de Ciencias

2008-01-01

299

QUALIDADE FISIOLÓGICA DE SEMENTES DE FEIJÃO EM PLANTIO DIRETO SOBRE DIFERENTES COBER TURAS DE PLANT AS EM DIAMANTINA, MG Physiological quality seeds of bean in no-tillage system over different coverings of plants in Diamantina, MG1  

Microsoft Academic Search

The objective this work was evaluate the effect of different coverings plants on the physiological quality seeds of bean in no- tillage system in Diamantina MG. The experiment was installed in the Campus II of UFVJM, in a Neossolo Quartzarênico Órtico típico, in blocks randomized design, with ten treatments and four replicates. The treatments were constituted of control chemical and

Ubirajara Russi Nunes; Nelson França Santos; Valter Carvalho; Andrade Júnior; Delacyr da Silva; Brandão Júnior; Geraldo Durães Pereira

300

Emergencia y sobrevivencia de gramíneas con diferentes secuencias de humedad\\/sequía en tres tipos de suelo Emergence and survival of native and introduced grasses in an arid environment under different wet-dry sequences in three soil types  

Microsoft Academic Search

Land degradation can be reversed using revegetation. Reseeding in degraded pastures is high risk, and requires knowledge of grass species behavior under several precipitation regimens. A study was done to evaluate germination and survival of native and introduced gramineas in an arid environment under different wet-dry sequences and in different soil types. The experiment was conducted under greenhouse conditions. Soils

Mario Humberto Esqueda Coronado; Alicia Melgoza Castillo; Manuel Sosa Cerecedo; Regina Carrillo Romo; Jorge Jiménez Castro

301

Diferentes tipos de hidratação durante o exercício prolongado e sua influência sobre o sódio plasmático Different types of hydration during a lenghened exercise and their influence on plasmatic sodium  

Microsoft Academic Search

This study aims at identifying alterations in plasmatic sodium concentration, concerning four hydration procedures: a) water ad libitum; b) scheduled water; c) sport drink of type1 (SD-T1); d) and sport drink of type 2 (SD-T2). An intragroup (intranalysis) and an intergroup (interanalysis) were performed on hydration procedures during a physical work with a duration of 120 minutes and an intensity

Salvador Zamora Navarro

302

RESPOSTA DE ALEVINOS DE JUNDIÁ (Rhamdia sp.) ALIMENTADOS COM DIFERENTES NÍVEIS DE PROTEÍNA BRUTA E ENERGIA DIGESTÍVEL RESPONSE OF SILVER CATFISH (Rhamdia sp.) FINGERLINGS FED DIETS CONTAINING DIFFERENT LEVELS OF CRUDE PROTEIN AND DIGESTIBLE ENERGY  

Microsoft Academic Search

Response of silver catfish fingerlings fed diets containing different levels of protein and energy was evaluated in a completely randomized design. A 3 x 3 factorial arrangement, with three levels of crude protein (44, 51 and 54 %) and three levels of digestible energy (3,400, 3,500 and 3,600 kcal kg -1 ), with three replications each was used. Weight gains

Sérgio Renato; Noguez Piedras; Juvêncio Luís; Osório Fernandes; Paulo Roberto Rocha Moraes; Fernando Vieira

303

Actividad en la superficie lunar: fenómenos lunares transitorios  

NASA Astrophysics Data System (ADS)

Los fenómenos lunares transitorios que se presentan en la superficie de la Luna son raros, poco frecuentes y de corta duración, lo que origina que exista poca información al respecto. Esto hace evidente la importancia de estudiarlos con detalle. Han sido registrados como nubes muy brillantes a base de gases residuales de la pasada actividad geológica lunar, de diferentes colores (amarillas, anaranjadas, rojas), de acuerdo con el tiempo de duración cambian su color, con tamaños de pocos kilómetros hasta de centenares de kilómetros. Por lo general, se presentan en ciertos lugares, como cráteres (Aristarco, Plato, Kepler, etc.), y en los bordes de los mares lunares (mar de la Fecundidad, zona de los montes Alpes, etc.).Variando su tiempo de exposición puede ser de unos pocos segundos hasta un poco más de una hora.

Roa, A. F. C.

304

On efeito do achatamento nos pontos de equilíbrio e na dinâmica de sistemas coorbitais  

NASA Astrophysics Data System (ADS)

Neste trabalho analisamos o efeito do achatamento do corpo principal nos pontos de equilíbrio lagrangianos e na configuração de órbitas girino-ferradura. Enfatizamos os sistemas coorbitais de satélites de Saturno, pois se encontram em relativa proximidade com o planeta, em que o efeito do achatamento se torna mais evidente. O estudo é dividido em três etapas independentes. Na primeira fase analisamos as equações de movimento do problema restrito de três corpos considerando o efeito do achatamento, e através do balanceamento de forças buscamos a nova configuração dos pontos de equilíbrio lagrangianos. Concluímos, nesta etapa, que os pontos de equilíbrio estáveis apresentam um pequeno deslocamento definido pelo parâmetro de achatamento, não podendo ser mais representados por triângulos eqüiláteros. Aplicamos este resultado aos satélites coorbitais de Tetis e Dione, encontrando as posições de equilíbrio levemente deslocadas em relação ao caso sem achatamento. Na segunda fase visamos o sistema Saturno-Jano-Epimeteu, que por se tratar de um sistema de massas comparáveis, optamos por desenvolver as equações de Yoder et al (Icarus 53, pág 431-443, 1983), que permitem determinar os pontos de equilíbrio e a amplitude de oscilação angular das órbitas girino-ferradura para o problema não-restrito de três corpos, porém, no nosso estudo consideramos o efeito do achatamento do corpo principal nestas equações. Encontramos que a distância angular entre satélites, quando em posição de equilíbrio estável, diminui quanto maior for o parâmetro de achatamento do corpo principal. Além disso, a órbita de transição girino-ferradura possui largura angular menor em relação ao caso sem achatamento. Por fim, realizamos integrações numéricas para os casos reais de coorbitais de Saturno comparando com os resultados analíticos. Nestas integrações simulamos diversas órbitas girino-ferradura com diferentes parâmetros de achatamento, utilizando condições iniciais corrigidas para a presença do achatamento.

Mourão, D. C.; Winter, O. C.; Yokoyama, T.

2003-08-01

305

Precessão do jato de 3C120: simulações hidrodinâmicas 3D  

NASA Astrophysics Data System (ADS)

Observações com técnicas de interferometria com longa linha de base têm mostrado a existência de um jato relativístico com componentes superluminais na região central de 3C 120. Estas componentes são ejetadas em distintas direções no plano do céu e com diferentes velocidades aparentes. Estas características foram interpretadas em trabalhos anteriores como efeitos da precessão do jato relativístico. Neste trabalho, realizamos simulações tri-dimensionais do jato de 3C 120 utilizando os parâmetros de precessão determinados em trabalhos anteriores e variando as características iniciais do jato e meio ambiente, tais como densidade numérica e temperatura. Todas as simulações foram feitas com o código hidrodinâmico YGUAZÚ-A, assumindo-se um jato adiabático descrito por uma equação de estado relativística. Pelo fato de estarmos utilizando um código hidrodinâmico, nós assumimos que a intensidade do campo magnético e a distribuição de partículas, necessários para se calcular a emissão sincrotron, são proporcionais à pressão hidrodinâmica. Comparação entre dois cenários distintos, nos quais o material do jato é ejetado com velocidade constante (jato contínuo) e com velocidade modulada por um padrão sinusoidal no tempo (jato intermitente), é apresentada e discutida. Para jatos que apresentam fenômenos de precessão e intermitência, com amplitude de variação na velocidade de injeção maior que dez por cento da velocidade média de injeção, a hipótese balística, controlada pela intermitencia, é mais provável. Por outro lado, para jatos com precessão mas sem intermitência (ou com amplitude de variabilidade em velocidade mais baixa que no caso anterior), o efeito da precessão na morfologia do jato não é desprezível. Portanto, de um modo geral, ambos efeitos (precessão e movimentos balísticos) devem estar concorrendo para afetar a morfologia dos jatos superluminais.

Caproni, A.; de Gouveia dal Pino, E. M.; Abraham, Z.; Raga, A. C.

2003-08-01

306

Mercury Exposure and Health Impacts among Individuals in the Artisanal and Small-Scale Gold Mining Community: A Comprehensive Review  

PubMed Central

Background: Mercury (Hg) is used in gold mining to extract gold from ore by forming “amalgam”—a mixture composed of approximately equal parts mercury and gold. Approximately 15 million people, including approximately 3 million women and children, participate in artisanal small-scale gold mining (ASGM) in developing countries. Thirty-seven percent of global air emissions of Hg are produced by ASGM. The recently adopted Minamata Convention calls for nations to gather health data, train health-care workers, and raise awareness in regard to ASGM activity. Objective: The purpose of our review was to evaluate the current literature regarding the health effects of Hg among those working and/or living in or near ASGM communities. Methods: We searched PubMed, ScienceDirect, and Google Scholar for studies relating to health effects and biomarkers of Hg exposure in ASGM communities. Articles published from 1990 through December 2012 were evaluated for relevance. Discussion: Studies reporting health assessments, kidney dysfunction, neurological disorders and symptoms, and immunotoxicity/autoimmune dysfunction in individuals living in or near an ASGM community were identified. More than 60 studies that measured biomarkers of Hg exposure in individuals living in or near ASGM communities were also identified. These studies, conducted in 19 different countries in South America, Asia, and Africa, demonstrated that hair and urine concentrations are well above World Health Organization health guidance values in ASGM communities. Conclusions: ASGM workers and their families are exposed to Hg vapor, and workers, workers’ families, and residents of nearby and downstream communities are consuming fish heavily contaminated with methylmercury. Citation: Gibb H, O’Leary KG. 2014. Mercury exposure and health impacts among individuals in the artisanal and small-scale gold mining community: a comprehensive review. Environ Health Perspect 122:667–672;?http://dx.doi.org/10.1289/ehp.1307864

O'Leary, Keri Grace

2014-01-01

307

Mercury Exposure and Health Impacts among Individuals in the Artisanal and Small-Scale Gold Mining Community: A Comprehensive Review.  

PubMed

Background: Mercury (Hg) is used in gold mining to extract gold from ore by forming "amalgam"-a mixture composed of approximately equal parts mercury and gold. Approximately 15 million people, including approximately 3 million women and children, participate in artisanal small-scale gold mining (ASGM) in developing countries. Thirty-seven percent of global air emissions of Hg are produced by ASGM. The recently adopted Minamata Convention calls for nations to gather health data, train health-care workers, and raise awareness in regard to ASGM activity.Objective: The purpose of our review was to evaluate the current literature regarding the health effects of Hg among those working and/or living in or near ASGM communities.Methods: We searched PubMed, ScienceDirect, and Google Scholar for studies relating to health effects and biomarkers of Hg exposure in ASGM communities. Articles published from 1990 through December 2012 were evaluated for relevance.Discussion: Studies reporting health assessments, kidney dysfunction, neurological disorders and symptoms, and immunotoxicity/autoimmune dysfunction in individuals living in or near an ASGM community were identified. More than 60 studies that measured biomarkers of Hg exposure in individuals living in or near ASGM communities were also identified. These studies, conducted in 19 different countries in South America, Asia, and Africa, demonstrated that hair and urine concentrations are well above World Health Organization health guidance values in ASGM communities.Conclusions: ASGM workers and their families are exposed to Hg vapor, and workers, workers' families, and residents of nearby and downstream communities are consuming fish heavily contaminated with methylmercury.Citation: Gibb H, O'Leary KG. 2014. Mercury exposure and health impacts among individuals in the artisanal and small-scale gold mining community: a comprehensive review. Environ Health Perspect 122:667-672;?http://dx.doi.org/10.1289/ehp.1307864. PMID:24682486

Gibb, Herman; O'Leary, Keri Grace

2014-07-01

308

"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

309

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

310

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

311

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

312

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

313

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

314

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

315

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

316

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

317

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

318

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

319

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

320

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

321

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

322

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

323

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

324

¿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

325

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

326

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

327

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

328

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

329

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

330

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

331

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

332

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

333

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

334

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

335

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

336

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

337

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

338

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

339

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

340

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

341

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

342

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

343

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

344

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

345

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.

346

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

347

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

348

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

349

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

350

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

351

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

352

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

353

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

354

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

355

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

356

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

357

Influencia del gatuño (Mimosa monancistra Benth.) en la infiltración de agua y la cantidad de forraje en pastizales con diferente grado de disturbio en el altiplano central mexicano Influence of catclaw mimosa (Mimosa monancistra Benth.) on water infiltration and forage production on rangelands with different disturbance degree in the Mexican central highland plateau  

Microsoft Academic Search

Observations were made during 2002 and 2004 in the states of Aguascalientes and Jalisco, México, aiming at evaluating catclaw mimosas influence on the amount of herbaceous biomass, total water infiltration and infiltration depth in the soil profile, on three sites and two influence areas (inside and outside) catclaw mimosas canopies. The amount of herbaceous biomass in site I was different

Ernesto Flores Ancira; Pedro Jurado Guerra; Arturo Gerardo; Valdivia Flores

358

Morphological and genetic comparative analyses of populations of Zoogoneticus quitzeoensis (Cyprinodontiformes:Goodeidae) from Central Mexico, with description of a new species Análisis comparativo morfológico y genético de diferentes poblaciones de Zoogoneticus quitzeoensis (Cyprinodontiformes:Goodeidae) del Centro de México, con la descripción de una especie nueva  

Microsoft Academic Search

A genetic and morphometric study of populations of Zoogoneticus quitzeoensis (Bean, 1898) from the Lerma and Ameca basins and Cuitzeo, Zacapu and Chapala Lakes in Central Mexico was conducted. For the genetic analysis, 7 populations were sampled and 2 monophyletic groups were identifi ed with a genetic difference of D HKY = 3.4% (3-3.8%), one being the populations from the

Domínguez-Domínguez Omar; Pérez-Rodríguez Rodolfo; Doadrio Ignacio

2008-01-01

359

Analise do numero de linfocitos B, T e subpopulacoes em pacientes com cancer da mama submetidas a esquemas diferentes de radioterapia. (Analysis of the numbers of B, T and subpopulation lymphocytes in patients with breast cancer submitted to a different radiotherapy schedules).  

National Technical Information Service (NTIS)

The behaviour of T and B lymphocytes subpopulations was evaluated in patients with breast cancer submitted to 3 different schedules of radiotherapy. The assays were carried out before and immediately after the end of treatment. T lymphocytes and the helpe...

J. M. Andrade

1989-01-01

360

Desarrollo, supervivencia y crecimiento del erizo Lytechinus variegatus (Lamarck, 1816) (Echinodermata: Echinoidea) alimentado con microalgas a dos salinidades y temperaturas diferentes Development, survival and growth of sea urchin Lytechinus variegatus (Lamarck, 1816) (Echinodermata: Echinoidea) fed on microalgae at two different salinities and temperatures  

Microsoft Academic Search

Development, survival and growth of Lytechinus variegatus were evaluated until juvenile stage. Thirty two sexually mature specimens were collected in Laguna de Raya (10°89´N, 64°89´O), Venezuela. Sea urchins were induced to spawn by injection of 3 mL of potassium chloride (KCl) 0.5 M. Pluteus larvae were randomly distributed (3 ind mL P-1 P ) in 24 plastic containers, containing 18

Astrid Domínguez; Jesús Rosas; Aidé Velásquez; Tomas Cabrera; Ernesto Mata

2007-01-01

361

Caracteristicas DA Drenagem Determinadas Em Fotografias Aerease Do Relevo Determinadas Em Cartas Planialtimetricas de Escalas Diferentes Para Tres Solos Do Estado de Sao Paulo (Characteristics of Drainage Determinations in Aerial Photographs and Relief Determination on Different Scales Planialtimetric Charts for Three Soils in the State of Sao Paulo).  

National Technical Information Service (NTIS)

Based on the interpretation of vertical aerial photographs on a 1:35,000 scale, the characterization was made of the drainage standards from three different soils of the State of Sao Paulo (red-yellow latosol, red-yellow podzol, and litosol) and the varia...

R. Angulofilho V. A. Demetrio G. V. Defranca

1986-01-01

362

Incorporando a variabilidade no processo de identifica??o do modelo de m?ximo global no Grade of Membership (GoM): considera??es metodol?gicas  

PubMed Central

A disponibilidade de bases de dados cada vez mais complexas e multidimensionais é um dos principais motivadores para o aumento do número de estudos que utilizam análises multivariadas baseadas em lógica de conjuntos nebulosos. Apesar da disseminação do método Grade of Membership nos trabalhos empíricos brasileiros da área de ciências sociais e saúde, questões relativas à identificabilidade e estabilidade dos parâmetros finais estimados pelo programa GoM 3.4 não foram suficientemente aprofundadas. Dada a relevância de se obterem parâmetros únicos e estáveis, Guedes et al. (2010) propuseram um procedimento empírico para localizar um modelo de máximo global (MG) com parâmetros estáveis. Entretanto, seu localizador de MG não incorpora qualquer medida de variabilidade. Neste artigo, tal limitação é contornada por meio da utilização de uma estatística de ponderação – Máximo Global Ponderado (MGP) – semelhante ao coeficiente de variação. Esse indicador busca não penalizar de forma desproporcional situações nas quais os desvios médios, apesar de diferentes de zero, são muito pequenos. Apresentam-se evidências de que o localizador MGP reduz a distância do modelo identificado à real estrutura latente dos dados em análise, quando comparados ao modelo identificado pelo localizador não ponderado, MG.

Guedes, Gilvan Ramalho; Siviero, Pamila Cristina Lima; Caetano, Andre Junqueira; Machado, Carla Jorge; Brondizio, Eduardo

2012-01-01

363

Aparición del cometa Hale - BOPP C / 1995-01  

NASA Astrophysics Data System (ADS)

El Cometa Hale - Bopp fue observado a partir de la 10ma. magnitud con el telescopio de 300mm de abertura a f/6.5. En esas primeras observaciones desde luego no hubo mucho detalle. A su vez las posiciones del cometa para nuestro hemisferio no fueron favorables, solamente asomó por el horizonte N.O. para nuestra latitud cuando se alejaba de la Tierra. Se registró la observación visualmente con binoculares 10 x 50, y fotográficamente con un Telezoom de 210mm a f/4,5 con película 400 ASA color. Todas las imágenes fueron procesadas y digitalizadas a fin de obtener las diferentes escalas de brillo. El aspecto que presentó para nuestra posición geográfica fue discreta ya que tuvo su máximo brillo cuando era visible desde el hemisferio norte. Presentó la clásica cola de polvo curva, y con su aspecto casi estelar, destacándose entre la luminosidad del crepúsculo. Instrumentos Utilizados: Telezoom de 210mm a f/4.5, Telescopio refractor de 80mm a f/15, Binocular 10 x 50

Arquiola, A.

364

Sobre a largura da última superfície de espalhamento  

NASA Astrophysics Data System (ADS)

De acordo com o modelo do "Big-Bang", no universo primordial a matéria estava em equilíbrio térmico com a radiação. Com a expansão a temperatura da radiação cai. Quando a temperatura chega em torno dos 4.000K, os espalhamentos diminuem, começando a recombinação dos prótons e elétrons em Hidrogênio neutro (era conhecida como da recombinação). Ao final da recombinação, os fótons se propagam livremente sofrendo, em princípio, somente os efeitos do "redshift" cosmológico. Esses fótons nos alcançam hoje como a radiação cósmica de fundo (RCF), e parecem vir de uma superfície esférica ao nosso redor, tal que o raio dela é a distância que ele viajou desde seu último espalhamento na época da recombinação. Naturalmente, esse processo não ocorreu abruptamente, implicando na existência de uma largura no espaço dos "redshifts" que deve depender do modelo cosmológico específico e dos processos físicos considerados. Neste trabalho analisamos os efeitos de diferentes modelos - a saber, aqueles com decaimento do vácuo L(t), criação de matéria, quintessência e gás de Chaplygin - sobre a última superfície de espalhamento da RCF, em particular sua largura e a função visibilidade, que determina a probabilidade de um fóton ter tido seu último espalhamento num "redshift" z. No caso particular dos modelos com decaimento do vácuo, existe uma forte dependência da função visibilidade com L(t). Tais efeitos poderão ser testados através da análise dos resultados de experimentos mais precisos que estão atualmente em andamento, como por exemplo, o WMAP.

Nobre, M. A. S.; Pires, N.; Lima, J. A. S.

2003-08-01

365

Determinação do extremo de baixa luminosidade da função de luminosidade através de simulações de Monte Carlo  

NASA Astrophysics Data System (ADS)

Neste trabalho apresentamos os principais resultados do estudo da população de galáxias anãs de baixo brilho superficial dos grupos compactos HCG44 e HCG68. A inclinação do extremo de baixa luminosidade a da função de luminosidade desses grupos foi estimado através de simulações de Monte Carlo. O método consistiu em simular galáxias anãs de baixo brilho superficial em imagens reais seguindo uma distribuição de magnitudes dada uma função de Schechter. Foram testados vários modelos com diferentes valores para os parâmetros M* e a da função de Schechter, e para cada um dos modelos foi repetido o mesmo processo de recuperação, seleção e análise usados com as galáxias anãs dos grupos. Os resultados de cada modelo foram então comparados com o observado nos grupos. Nossos resultados indicam que a distribuição de magnitudes (para magnitudes absolutas até MR»-12) observadas nos grupos são compatíveis com uma função de luminosidade de Schechter dada por um M* = -16 e um a entre -1.0 e -1.4, e portanto de acordo com a tendência observada de uma inclinação do extremo de baixa luminosidade da função de luminosidade de grupos mais plana (~1.2, Trentham & Tully 2002, MNRAS, 335, 712) que esperado pelo modelo hierárquico de formação de estruturas CDM (Cold Dark Matter - Matéria Escura Fria).

Campos, P. E.; Mendes de Oliveira, C.

2003-08-01

366

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

367

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

368

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

369

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

370

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.

371

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

372

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

373

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

374

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

375

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

376

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

377

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

378

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

379

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

380

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

381

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

382

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

383

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

384

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

385

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

386

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

387

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

388

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

389

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

390

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

391

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

392

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

393

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

394

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

395

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

396

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

397

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

398

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

399

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

400

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

401

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

402

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

403

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

404

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

405

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

406

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

407

(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

408

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

409

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

410

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

411

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

412

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

413

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

414

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

415

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

416

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....

417

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

418

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

419

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

420

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

421

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

422

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

423

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

424

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

425

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.

426

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

427

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

428

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

429

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

430

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

431

A estabilidade dos PAHS em função da energia da radiação interestelar nas faixas UV e raios-X  

NASA Astrophysics Data System (ADS)

A nebulosa CRL 618, uma proto-nebulosa planetária cuja nuvem molecular espessa envolve uma estrela B0, contém uma grande quantidade de C2H2 e CH4. Estas moléculas são consideradas os tijolos da criação de grandes moléculas carbonadas como os Hidrocarbonetos Policíclicos Aromáticos (PAHs). Esta nebulosa, por estar exposta a intensos campos de UV e Raios-X, é uma região de fotodissociação molecular que propicia a formação de novas moléculas, confirmada pela presença de C4H2 e C6H6 (Benzeno), que é a unidade básica dos PAHs. Atribui-se a esta família de moléculas orgânicas duas propriedades fundamentais, a resistência para sobreviver ao campo de radiação UV interestelar e a geração das bandas de emissão não identificadas (UIR) observadas no infravermelho. No entanto, alguns autores questionam a resistência dos PAHs ao campo de radiação UV interestelar. Empregando a técnica de Espectrometria de Massas por Tempo de Vôo, no modo de coincidência fotoelétron-fotoíon, estudamos a ionização e fragmentação das seguintes moléculas: Benzeno, Benzeno deuterado, Naftaleno, Antraceno e Fenantreno. Utilizamos uma fonte de Hélio monocromática em 21,21 eV (584,5 Å) e a radiação Síncroton do Laboratório Nacional de Luz Síncroton (LNLS) em diferentes energias nas proximidades da borda do C 1s ( 290 eV). Comprovamos a estabilidade dos PAHs sob ação de UV (21,21 eV), onde eles apresentam um baixo nível de fotodissociação, produzindo fragmentos ionizados com rendimento total na ordem de 5 por cento em relação ao íon molecular pai. Entretanto, em altas energias, na faixa de Raios-X, a quebra destas moléculas torna-se mais intensa, com a produção de muitos fragmentos. Como uma das rotas de fragmentação do Naftaleno é [(C10H8) = > (C6H6+) + (C4H2) + (e-)], e como temos as evidências observacionais da existência do C4H2 e C6H6 na nebulosa CRL 618, sugerimos que este ambiente também possui o Naftaleno.

Pinotti, R.; Costa, R. K.; Boechat-Roberty, H. M.; Lago, A.; Souza, G. B.

2003-08-01

432

Mapa de Vulnerabilidad en Honduras  

NASA Astrophysics Data System (ADS)

Dado que Honduras geográficamente se encuentra en una zona que esta expuesta a diferentes fenómenos sísmicos y climatológicos. Investigamos cuales son las zonas mas propensas a desastres naturales, la vulnerabilidad y el factor de resiliencia de la población de acuerdo a diferentes parámetros de estudio.

Sánchez, A. A.

2013-05-01

433

Contenido de hierro y cinc en la semilla y su respuesta al nivel de fertilización con fósforo en 40 variedades de fríjol colombianas Seed iron and zinc content and their response to phosphorus fertilization in 40 Colombian bean varieties  

Microsoft Academic Search

El mejoramiento del fríjol en Colombia ha producido un amplio número de variedades para diferentes zonas agroecológicas y con diferentes rangos de adaptación. Los objetivos de esta investigación fueron determinar la calidad nutricional del fríjol en Colombia en cuanto al contenido de hierro y cinc en el grano y entender cómo los niveles de fertilización del suelo alta y baja

Carolina Astudillo; Matthew W. Blair

2008-01-01

434

Modelización participativa para la evaluación integrada de la sostenibilidad de los recursos hídricos: el Modelo del Mundo Celular y el Proyecto Matisse  

Microsoft Academic Search

El presente trabajo describe el proceso participativo vinculado al desarrollo y la implementación del prototipo de un modelo que tiene como principal objetivo servir de soporte durante el procesos de Evaluación Integrada de la Sostenibilidad (EIS) de diferentes opciones políticas de gestión de los recursos hídricos a diferentes niveles de acción. El modelo – llamado el Modelo\\u000adel Mundo Celular

J. David Tàbara; Bodil Elmqvist; Ilhan Akgun; Cristina Madrid; Lennart Olson; Michel Schilperoord; Pieter Valkering; Patrick Wallman; Paul Weaver

1970-01-01

435

Comportamiento del Helio en estrellas químicamente peculiares  

NASA Astrophysics Data System (ADS)

Las estrellas químicamente peculiares (CP) se caracterizan por tener deficiencias y sobreabundancias de algunos elementos químicos de hasta 106 veces la abundancia solar. Además presentan variaciones en las líneas espectrales. Se piensa que ello se debe a que los campos magnéticos presentes en este tipo de estrellas son principalmente dipolares, con un eje de simetría diferente del eje de rotación. La distribución de los elementos sobreabundantes y deficientes no es homogénea sobre la superficie estelar y las variaciones observadas serían una consecuencia directa de la rotación estelar. Entre los elementos con abundancia anómala se encuentra el Helio, cuyas líneas tienen intensidades que no son consistentes con una abundancia normal, que no puede ser determinada del modo usual, o sea, considerando una atmósfera con composición solar. Con el fin de determinar la abundancia de este elemento, se inició un estudio de estrellas anómalas de Helio, Hew y He strong. Además se determinarán las abundancias de otros elementos anómalos como ser el Si, Cr, Mg, Mn y Fe. Las mismas se determinan del modo tradicional, o sea: a) medida de los anchos equivalentes de las líneas de los distintos elementos analizados; b) adopción de la temperatura efectiva, gravedad y abundancia del Helio; c) cálculo del modelo de atmósfera d) comparación con las observaciones y reinicio de un proceso iterativo hasta lograr un acuerdo entre todos los parámetros analizados. Las observaciones se llevaron a cabo en el Complejo Astronómico El Leoncito. Se observaron setenta y ocho estrellas anómalas de Helio. En este momento se está procediendo a calcular las abundancias correspondientes a los distintos elementos químicos. Para ello se hace uso de los modelos de Kurucz, ATLAS9. Los cálculos NLTE de las líneas de Helio se llevan a cabo con el programa MULTI y se compararán con los realizados con el programa WIDTH9 de Kurucz (LTE), con el objeto de resaltar la importancia de los efectos NLTE.

Malaroda, S. M.; López García, Z.; Leone, F.; Catalano, F.

436

Excitação e fotoabsorção de moléculas interestelares no ultra violeta  

NASA Astrophysics Data System (ADS)

O estudo dos processos de excitação, fotoabsorção e ionização molecular nas nuvens interestelar, permite a análise dos processos químicos, como a formação e destruição de moléculas, até mesmo daquelas que dão origem à vida. Acredita-se que as moléculas como CS2, NH3, CO2 e N2O estão presentes nas nuvens onde são formadas as estrelas e seus sistemas planetários. Estas moléculas são congeladas na superfície de objetos densos, como aqueles encontrados na Nuvem de Oort do nosso Sistema Solar. Quando esses objetos (cometas) desprendem-se dessa região, aproximam-se do Sol, sofrem a interação da radição Ultra Violeta (UV), passam à fase gasosa e são bombardeados por íons e elétrons presentes nos ventos solares. Obtivemos os espectros de fotoabsorção do CS2, NH3 e N2O na faixa do UV, convertendo espectros de Perda de Energia de Elétrons, medidos no menor ângulo de espalhamento e na energia de impacto de 1000 eV. Destes espectros determinamos os valores de força de oscilador (f) e de seção de choque absolutas na faixa de 500 a 2000 Å. Para tal, estudamos e comparamos dois diferentes métodos de conversão. Neste trabalho também geramos muitos dados moleculares como, valores absolutos de seção de choque elástica em função do ângulo de espalhamento e a distribuição de força do oscilador generalizada (df/dE) em função da energia de excitação para diversos ângulos de espalhamento. Comparando nossos espectros de fotoabsorção com o espectro da atmosfera de Júpiter, obtido pelo Telescópio Espacial Hubble, logo após o impacto do cometa Shoemaker-Levy 9, confirmamos a presença do CS2 e da amônia.

Rodrigues, A. M. F.; Boechat-Roberty, H. M.; Souza, G. B.; Turci, C. C.

2003-08-01

437

Induction of sterility in Anastrepha Fraterculus (Diptera: Tephritidae) by gamma radiation  

SciTech Connect

In relation to the application of the sterile insect technique (SIT) for the South American fruit fly Anastrepha fraterculus (Wiedemann), we analyzed the effect on adult fertility of different doses of gamma irradiation and the age of pupae at the time of irradiation. In a first experiment, we applied doses of 50, 70, and 90 Gy to pupae at 24, 48, 72, and 96 h before adult emergence. In a second experiment we irradiated pupae 48 h before emergence with 20, 40, and 60 Gy and estimated male and female fertility and sperm transfer by irradiated males. The results indicated pupal age at irradiation does not significantly affect male fertility. If males irradiated with 60 Gy are crossed to non-irradiated females the fertility is about 1%. Females irradiated with 40 Gy did not lay eggs independently of the male to which they mated. No significant effects of radiation were observed with respect to the ability of males to transfer sperm. A dose of 70 Gy applied 48 h before adult emergence induces 100% sterility in both males and females. (author) [Spanish] Para la aplicacion de la tecnica del insecto esteril (TIE) en Anastrepha fraterculus (Wiedemann), en este trabajo analizamos el efecto de diferentes dosis de irradiacion gamma y la edad optima de la pupa al momento de la irradiacion. En el primer experimento se evaluaron las dosis de 50, 70, y 90 Gy en pupas de 24, 48, 72, y 96 h antes de la emergencia del adulto. En el segundo experimento se irradiaron pupas 48 h antes de la emergencia con dosis de 20, 40, 60 Gy y se estimo la fertilidad de los machos y las hembras, y la transferencia de espermas por los machos irradiados. Los resultados indicaron que la irradiacion no modifico significativamente la fertilidad de los machos. En las cruzas de machos irradiados a 60 Gy con hembras no irradiadas se observo 1% de eclosion larvaria, mientras que las hembras irradiadas a 40 Gy no pusieron huevos. La irradiacion no afecto significativamente la transferencia de espermas de los machos tratados. Por lo tanto, una dosis de 70 Gy aplicada 48 h antes de la emergencia del adulto induce 100% de esterilidad tanto en machos como en hembras. (a0011uth.

Allinghi, A. [Comision Nacional de Energia Atomica, CNEA, Buenos Aires (Argentina); Gramajo, C.; Willink, E. [Estacion Experimental Agro-industrial Obispo Columbres, Tucuman (Argentina); Vilardi, J. [Depto. Ecologia, Genetica y Evolucion, Facultad de Ciencias Exactas y Naturales, Universidad Buenos Aires. (1428) Buenos Aires (Argentina)

2007-03-15

438

Sexual selection on multivariate phenotypes in Anastrepha Fraterculus (Diptera: Tephritidae) from Argentina  

SciTech Connect

Despite the interest in applying environmentally friendly control methods such as sterile insect technique (SIT) against Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae), information about its biology, taxonomy, and behavior is still insufficient. To increase this information, the present study aims to evaluate the performance of wild flies under field cage conditions through the study of sexual competitiveness among males (sexual selection). A wild population from Horco Molle, Tucuman, Argentina was sampled. Mature virgin males and females were released into outdoor field cages to compete for mating. Morphometric analyses were applied to determine the relationship between the multivariate phenotype and copulatory success. Successful and unsuccessful males were measured for 8 traits: head width (HW), face width (FW), eye length (EL), thorax length (THL), wing length (WL), wing width (WW), femur length (FL), and tibia length (TIL). Combinations of different multivariate statistical methods and graphical analyses were used to evaluate sexual selection on male phenotype. The results indicated that wing width and thorax length would be the most probable targets of sexual selection. They describe a non-linear association between expected fitness and each of these 2 traits. This non-linear relation suggests that observed selection could maintain the diversity related to body size. (author) [Spanish] A pesar del interes por la aplicacion de metodos de control de bajo impacto ambiental sobre Anastrepha fraterculus (Diptera: Tephritidae), como la Tecnica del Insecto Esteril (TIE), no existe aun informacion suficiente sobre su biologia, taxonomia y comportamiento. Este trabajo tiene como objetivo evaluar el desempeno de moscas en jaulas de campo a traves del estudio de la competitividad sexual entre machos salvajes (seleccion sexual). Para ello, se muestreo una poblacion de Horco Molle, Tucuman (Argentina). En jaulas de campo se liberaron machos y hembras adultos virgenes para evaluar la competicion por el apareamiento. Se midieron ocho rasgos morfometricos en machos exitosos y no exitosos: ancho de la cabeza, ancho de la cara, largo del ojo, largo del torax, largo del ala, ancho del ala, largo del femur y largo de la tibia. Se realizaron analisis morfometricos para determinar la relacion entre el fenotipo multivariado y el exito copulatorio. Para evaluar la seleccion sexual sobre el fenotipo del macho se utilizaron diferentes combinaciones de metodos estadisticos multivariados y analisis graficos. Los resultados demostraron que el ancho de ala y el largo de torax serian los blancos mas probables de seleccion sexual, y describen una asociacion no lineal entre el exito copulatorio y cada uno de estos dos rasgos. Dicha asociacion sugiere que la seleccion observada mantendria la diversidad para el tamano del cuerpo. (author)

Sciurano, R.; Rodriguero, M.; Gomez Cendra, P.; Vilardi, J. [Depto. Ecologia, Genetica y Evolucion. Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA Buenos Aires (Argentina); Segura, D.; Cladera, J.L. [Instituto de Genetica, Instituto Nacional de Tecnologia Agropecuaria (Argentina); Allinghi, Armando [Comision Nacional de Energia Atomica (Argentina)

2007-03-15

439

Hydrogeology in North America: past and future  

NASA Astrophysics Data System (ADS)

This paper is a retrospective on the evolution of hydrogeology in North America over the past two centuries, and a brief speculation of its future. The history of hydrogeology is marked by developments in many different fields such as groundwater hydrology, soil mechanics, soil science, economic geology, petroleum engineering, structural geology, geochemistry, geophysics, marine geology, and more recently, ecology. The field has been enriched by the contributions of distinguished researchers from all these fields. At present, hydrogeology is in transition from a state of discovering new resources and exploiting them efficiently for maximum benefit, to one of judicious management of finite, interconnected resources that are vital for the sustenance of humans and other living things. The future of hydrogeology is likely to be dictated by the subtle balance with which the hydrological, erosional, and nutritional cycles function, and the decision of a technological society to either adapt to the constraints imposed by the balance, or to continue to exploit hydrogeological systems for maximum benefit. Although there is now a trend towards ecological and environmental awareness, human attitudes could change should large parts of the populated world be subjected to the stresses of droughts that last for many decades. Cet article est une rétrospective de l'évolution de l'hydrogéologie en Amérique du Nord sur les deux derniers siècles, et une brève évaluation de son futur. L'histoire de l'hydrogéologie est marquée par le développement de plusieurs techniques de terrain telles, l'hydrologie des eaux souterraines, la mécanique des sols, les sciences du sol, la géologie économique, l' ingénierie pétrolière, la géologie structurale, la géochimie, la géophysique, la géologie marine et plus récemment l'écologie. La science a été enrichie par la contribution de plusieurs chercheurs distingués, provenant de toutes ces branches. A présent, l'hydrogéologie est à la transition entre la volonté de découvrir de nouvelles ressources et l' exploitation la plus bénéfique au possible, et un management judicieux des ressources finies, interconnectées, qui sont vitales pour l' approvisionnement des hommes et autres formes de vie. Le futur de l' hydrogéologie sera dicté par la balance subtile dans laquelle intervient les cycles de l'hydrologie, de l'érosion, de la nutrition, et la décision d'une société technologique qui s'adapterait aux contraintes de la balance, ou qui continuerait d'exploiter les systèmes hydrologiques pour un bénéfice maximum. Par ailleurs il y a une nette tendance à inclure les aspects écologiques, les aspects environnementaux, et les changements humains qui pourraient être influencés par les modifications hydrogéologiques observées depuis une dizaine d'années. Este articulo es una retrospectiva sobre la evolución de la hidrogeología en Norte América en los pasados dos siglos, y una breve especulación de su futuro. La historia de la hidrogeología está marcada por desarrollos en muchos campos diferentes tal como hidrología de aguas subterráneas, mecánica de suelos, ciencia del suelo, geología económica, ingeniería del petróleo, geología estructural, geoquímica, geofísica, geología marina, y más recientemente, ecología. El campo se ha enriquecido por las contribuciones de investigadores distinguidos en todos esos campos. Actualmente, la hidrogeología se encuentra en transición de un estado de descubrir nuevos recursos y explotarlos eficientemente para un beneficio máximo, a un estado de gestión juiciosa de recursos finitos, interconectados, que son vitales para el sustento de humanos y otras cosas vivientes. El futuro de la hidrogeología posiblemente esté determinado por el balance sutil con el cual funcionan los ciclos nutricionales, erosionales e hidrológicos, y la decisión de una sociedad tecnológica para ya sea adaptarse a las restricciones impuestas por el balance o para continuar con la explotación de los sistemas hidrogeológicos para un benefici

Narasimhan, T. N.

2005-03-01

440

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.

441

Karst groundwater: a challenge for new resources  

NASA Astrophysics Data System (ADS)

Karst aquifers have complex and original characteristics which make them very different from other aquifers: high heterogeneity created and organised by groundwater flow; large voids, high flow velocities up to several hundreds of m/h, high flow rate springs up to some tens of m3/s. Different conceptual models, known from the literature, attempt to take into account all these particularities. The study methods used in classical hydrogeology—bore hole, pumping test and distributed models—are generally invalid and unsuccessful in karst aquifers, because the results cannot be extended to the whole aquifer nor to some parts, as is done in non-karst aquifers. Presently, karst hydrogeologists use a specific investigation methodology (described here), which is comparable to that used in surface hydrology. Important points remain unsolved. Some of them are related to fundamental aspects suc h as the void structure - only a conduit network, or a conduit network plus a porous matrix -, the functioning - threshold effects and non-linearities -, the modeling of the functioning - double or triple porosity, or viscous flow in conduits - and of karst genesis. Some other points deal with practical aspects, such as the assessment of aquifer storage capacity or vulnerability, or the prediction of the location of highly productive zones. Los acuíferos kársticos tienen características originales y complejas que los hacen muy diferentes de otros acuíferos: alta heterogeneidad creada y organizada por el flujo de agua subterránea, espacios grandes, velocidades altas de flujo de hasta varios cientos de m/h, manantiales con ritmo alto de flujo de hasta algunas decenas de m3/s. Diferentes modelos conceptuales que se conocen en la literatura tratan de tomar en cuenta todas estas particularidades. Los métodos de estudio usados en hidrogeología clásica- pozos, pruebas de bombeo y modelos distribuidos- son generalmente inválidos y no exitosos en acuíferos kársticos, debido a que los resultados no pueden extenderse a todo el acuífero ni a alguna de sus partes, como se hace en acuíferos no kársticos. Actualmente los hidrogeólogos kársticos usan una metodología de investigación específica, que se des cribe aquí, la cual es comparable con la que se utiliza en hidrología superficial. Puntos importantes permanecen sin resolverse. Algunos de ellos se relacionan con aspectos fundamentales tal como la estructura de espacios- solo una red de conductos, ouna red de conductos más una matriz porosa-, el funcionamiento-efectos threshold y no-linealidades-, el modelizado del funcionamiento-porosidad dobleo triple, o flujo viscoso en conductos- y génesis del karst. Algunos otros puntos se relacionan con aspectos prácticos, tal como la evaluación de la capacidad de almacenamiento del acuífero o la vulnerabilidad, o la predicción de la localización de zonas altamente productivas. Les aquifères karstiques présentent des caractères originaux complexes qui les distinguent profondément de tous les autres milieux aquifères: forte hétérogénéité créée et organisée par les écoulements souterrains eux-mêmes, vides de très grandes dimensions, vitesses d'écoulement pouvant atteindre quelques centaines de mètres par heure, sources à débit pouvant atteindre quelques dizaines de m3/s. Différents modèles conceptuels tentent de prendre en compte ces particularités. Les méthodes d'étude de l'hydrogéologie classique—forage, essai de pompage et modèles maillés - ne sont en général pas adaptés aux aquifères karstiques, parce que les résultats obtenus ne peuvent pas être étendus à l'aquifère tout entier, ou à certaines de ses parties, comme cela est fait pour les aquifères non karstiques. Actuellement les hydrogéologues du karst ont recours à une méthodologie d'étude spécifique décrite ici, comparable à celle utilisée en hydrologie de surface. Des points importants restent à résoudre. Certains concernent des aspects fondam

Bakalowicz, Michel

2005-03-01

442

Cerebral Palsy  

MedlinePLUS

... niño. Es posible que unos niños se tropiecen mucho y se les dificulte caminar, mientras que otros ... la parálisis cerebral varían considerablemente ya que existen muchos tipos y niveles diferentes. El primer síntoma de ...

443

Terapia hormonal para el cáncer de próstata  

Cancer.gov

Hoja informativa que describe la terapia hormonal y su función en el tratamiento del cáncer de próstata. Incluye información acerca de los tipos diferentes de terapia hormonal, cómo se usan y los efectos secundarios posibles.

444

El cáncer  

Cancer.gov

Información para mejorar sus conocimientos sobre el cáncer, que incluye las formas de prevenir el cáncer, la importancia de visitar al médico regularmente y hacerse exámenes de detección, y las diferentes opciones de tratamiento disponibles.

445

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

446

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.

447

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

448

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

449

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

450

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

451

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

452

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

453

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

454

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

455

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

456

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

457

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

458

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

459

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

460

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

461

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

462

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

463

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

464

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

465

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.

466

A emissão em 8mm e as bandas de Merrill-Sanford em estrelas carbonadas  

NASA Astrophysics Data System (ADS)

Estrelas carbonadas possuem bandas moleculares em absorção no visível e, no infravermelho (IR) as principais características espectrais se devem a emissão de grãos. Recentemente foi detectada a presença de bandas de SiC2 (Merrill-Sanford, MS) em emissão sendo atribuída à presença de um disco rico em poeira. Neste trabalho analisamos uma amostra de 14 estrelas carbonadas, observadas no telescópio de 1.52 m do ESO em 4 regiões espectrais diferentes, a fim de detectar as bandas de MS em emissão. Nossa amostra é composta de estrelas que apresentam além da emissão em 11.3 mm, outra em 8 mm. Esta última emissão, não usual nestes objetos, tem sido atribuída ou a moléculas de C2H2, ou a um composto sólido ainda indefinido. A detecção de emissões de MS e aquelas no IR, simultaneamente, revelaria um cenário mais complexo que o habitualmente esperado para os ventos destes objetos. No entanto como primeiro resultado, verificamos que as bandas de Merrill-Sanford encontram-se em absorção, não revelando nenhuma conexão com a emissão a 8 mm. Assim, temos duas hipóteses: (a) a emissão a 8 mm se deve à molécula C2H2 ou (b) essa emissão é resultado da emissão térmica de grãos. Testamos a segunda hipótese modelando a amostra com grãos não-homogêneos de SiC e quartzo, o qual emite em aproximadamente 8mm. Este grão seria produzido em uma fase evolutiva anterior a das carbonadas (estrelas S) e por terem uma estrutura cristalina são destruídos apenas na presença de campos de radiação ultravioleta muito intensos. Os modelos para os envoltórios utilizam o método de Monte Carlo para descrever o problema do transporte da radiação. As conclusões deste trabalho são: (1) as bandas de Merrill-Sanford se encontram em absorção, sugerindo um cenário usual para os ventos das estrelas da amostra; (2) neste cenário, a emissão em 8 mm seria resultado de grãos de quartzo com mantos de SiC, indicando que o quartzo poderia sobreviver a fase evolutiva S.

de Mello, A. B.; Lorenz-Martins, S.

2003-08-01

467

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

468

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

469

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

470

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

471

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

473

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.

474

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

475

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

476

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

477

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

478

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

479

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

480

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

481

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

482

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

483

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

484

Sexual performance of mass reared and wild Mediterranean fruit flies (Diptera: Tephritidae) from various origins of the Madeira Islands  

SciTech Connect

The success of Mediterranean fruit fly (medfly) Ceratitis capitata (Wiedemann) control programs integrating the sterile insect technique (SIT) is based on the capacity of released the sterile males to compete in the field for mates. The Islands of Madeira are composed of 2 populated islands (Madeira and Porto Santo) where the medfly is present. To evaluate the compatibility and sexual performance of sterile flies we conducted a series of field cage tests. At same time, the process of laboratory domestication was evaluated. 3 wild populations, one semi-wild strain, and 1 mass reared strain were evaluated: the wild populations of (1) Madeira Island (north coast), (2) Madeira Island (south coast), and (3) Porto Santo Island; (4) the semi-wild population after 7 to 10 generations of domestication in the laboratory (respectively, for first and second experiment); and (5) the genetic sexing strain in use at Madeira medfly facility (VIENNA 7mix2000). Field cage experiments showed that populations of all origins are mostly compatible. There were no significant differences among wild populations in sexual competitiveness. Semi-wild and mass-reared males performed significantly poorer in both experiments than wild males in achieving matings with wild females. The study indicates that there is no significant isolation among strains tested, although mating performance is reduced in mass-reared and semi-wild flies after 7 to 10 generations in the laboratory. (author) [Spanish] El exito de los programas de control de la mosca mediterranea de la fruta (Ceratitis capitata (Wiedemann) que integran la tecnica del insecto esteril (TIE) esta basado en la capacidad de machos esteriles para competir en el campo por sus parejas. Las Islas de Madeira consisten de 2 islas pobladas (Madeira y Porto Santo) donde la mosca mediterranea de la fruta esta presente. Para evaluar la compatibilidad y el funcionamiento sexual de moscas esteriles nosotros realizamos una serie de pruebas de jaula en el campo. Al mismo tiempo, el proceso de la domesticacion en el laboratorio fue evaluado. Tres poblaciones naturales, una poblacion semi-natural y una poblacion criada en masa fueron evaluadas: las poblaciones natural de (1) Isla de Madeira (costa norte), (2) Isla de Madeira (costa sur) y (3) Isla de Porto Santo; (4) una poblacion semi-natural despues de 7 a 10 generaciones de domesticacion en el laboratorio (respectivamente, para el primero y segundo experimento); y (5) la raza para separar sexos geneticamente que es usada en el laboratorio de la mosca mediterranea de Madeira (VIENNA 7mix2000). Los experimentos usando jaulas en el campo mostraron que las poblaciones de diferentes origines fueron en su mayor parte compatibles. No hubo diferencias significativas en la capacidad para competir sexualmente entre las poblaciones naturales. Los machos semi-naturales y los machos criados en masa mostraron un desempeno significativamente bajo en ambos experimentos que los machos naturales en el logro de copula con las hembras naturales. Este estudio indica que no hay un aislamiento significativo entre las razas probadas, aunque el desempeno en el apareamiento fue reducido en las moscas criadas en masa y semi-naturales despues de 7 a 10 generaciones en el laboratorio. (author)

Pereira, R.; Silva, N.; Quintal, C.; Abreu, R.; Andrade, J.; Dantas, L. [Programa Madeira-Med, Estrada Eng. Abel Vieira 262, 9135-260 Camacha, Madeira (Portugal)

2007-03-15

485

Direct simulation of groundwater transit-time distributions using the reservoir theory  

NASA Astrophysics Data System (ADS)

Groundwater transit times are of interest for the management of water resources, assessment of pollution from non-point sources, and quantitative dating of groundwaters by the use of environmental isotopes. The age of water is the time water has spent in an aquifer since it has entered the system, whereas the transit time is the age of water as it exits the system. Water at the outlet of an aquifer is a mixture of water elements with different transit times, as a consequence of the different flow-line lengths. In this paper, transit-time distributions are calculated by coupling two existing methods, the reservoir theory and a recent age-simulation method. Based on the derivation of the cumulative age distribution over the whole domain, the approach accounts for the whole hydrogeological framework. The method is tested using an analytical example and its applicability illustrated for a regional layered aquifer. Results show the asymmetry and multimodality of the transit-time distribution even in advection-only conditions, due to the aquifer geometry and to the velocity-field heterogeneity. Résumé Les temps de transit des eaux souterraines sont intéressants à connaître pour gérer l'évaluation des ressources en eau dans le cas de pollution à partir de sources non ponctuelles, et aussi pour dater quantitativement les eaux souterraines au moyen des isotopes du milieu. L'âge de l'eau est le temps qu'elle a passé dans un aquifère depuis qu'elle est entrée dans le système, alors que le temps de transit est l'âge de l'eau au moment où elle quitte le système. L'eau à la sortie d'un aquifère est un mélange d'eaux possédant différents temps de transit, du fait des longueurs différentes des lignes de courant suivies. Dans ce papier, les distributions des temps de transit sont calculées en couplant deux méthodes, la théorie du réservoir et une méthode récente de simulation des âges. Basée sur la dérivation de la distribution cumulées des âges sur tout le domaine, l'approche prend en compte le cadre hydrogéologique dans son ensemble. La méthode est testée sur un exemple analytique et son applicabilité est illustrée pour un aquifère stratifié régional. Les résultats montrent l'asymétrie et la plurimodalité de la distribution des temps de transit même dans des conditions uniquement d'advection, à cause de la géométrie de l'aquifère et de l'hétérogénéité du champ des vitesses. Resumen El estudio de los tiempos de tránsito del agua subterránea es muy útil para (1) la gestión de los recursos de agua frente a la contaminación por focos no puntuales, y (2) la datación de aguas mediante isótopos ambientales. La edad de un agua subterránea es el tiempo que ésta ha permanecido en el acuífero contada desde el momento de su entrada, mientras que el tiempo de tránsito corresponde a la edad del agua en el momento en que abandona el sistema. En el punto de descarga en realidad se encuentra una mezcla de aguas con distintos tiempos de tránsito, debido a la yuxtaposición de líneas de flujo con diferentes recorridos. En este artículo se calculan las distribuciones de tiempos de tránsito mediante el acoplamiento de dos métodos ya existentes: la teoría de embalse y un método reciente de simulación de edades. El método se basa en la derivación de la distribución acumulada de edades, y es aplicable en todo el dominio hidrogeológico. El método se ha probado en un ejemplo analítico, y su aplicabilidad se muestra para un acuífero estratificado. Como resultado se obtiene que, aun en el caso de flujo exclusivamente advectivo, la distribución de tiempos de tránsito es asimétrica y multimodal debido a la geometría del acuífero y a la heterogeneidad del campo de velocidades.

Etcheverry, David; Perrochet, Pierre

486

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

487

Water Quality of la Cuenca Abangares en Las Juntas, Costa Rica: Analysis of water pollution using benthic macroinvertebrates  

Microsoft Academic Search

El río Abangares tiene contaminación porque de los cantidades de los macro invertebrados en los sedimentos. Después de desordenar las rocas en el río, colecté insectos e identificarlos. Entonces, yo compare los insectos diferentes en los partes del río y hace conclusiones de calidad del agua. Introduction\\/Background: Costa Rica is a country rich with rainforest and natural wonders. The beauty

Valerie Brown

488

Identificación y fortalecimieto de centralidades urbanas: El caso de Quito  

Microsoft Academic Search

Muchas ciudades latinoamericanas experimentan un crecimiento territorial desbalanceado en el que coexisten áreas muy dinámicas con otras fuertemente rezagadas en términos sociales y económicos, habitualmente localizadas en la periferia urbana. Ese desbalance se refleja en un suministro de servicios, empleos, áreas verdes, espacios públicos y comunales, así como en usos de suelo, que son muy desiguales para diferentes áreas de

Fernando Cuenin; Mauricio Silva

2010-01-01

489

Polimorfismos genéticos de aislamientos del género Malassezia obtenidos en Colombia de pacientes con lesión dermatológica y sin ella  

Microsoft Academic Search

Introducción. Las especies del género Malassezia se consideran levaduras oportunistas emergentes de gran importancia. Han sido asociadas a diferentes patologías dermatológicas y sistémicas de las cuales se aislan una o más especies de este género. El papel de estas levaduras en las enfermedades dermatológicas no se ha aclarado completamente, ya que la Malassezia spp. pertenece a la flora normal de

Adriana M. Celis; Maria Caridad Cepero de García

490

PROLAPSO DO RETO ASPECTOS CLÍNICOS E CIRÚRGICOS  

Microsoft Academic Search

RESUMO: O prolapso retal é um transtorno da estática do reto e se manifesta pela invaginação oculta ou visível, quando há saída de segmento variável do reto pelo ânus. Trata-se de uma anomalia relativamente incomum, incapacitante e de etiologia pouco conhecida, para que concorre uma multiplicidade de fatores de diferentes patogenias. É mais freqüente na mulher idosa, com pico acima

491

Las clases medias republicanas en el franquismo: represión y control social  

Microsoft Academic Search

En este artículo se realiza una aproximación a las fases y diferentes formas de represión que sufrieron las personas de militancia republicana en los anos de la Guerra Civil. El trabajo se divide en tres partes. En la primera se trata de explicar, desde una perspectiva histórica, la vinculación entre clases medias y republicanismo. La segunda se centra especialmente en

Alicia Alted Vigil

2001-01-01

492

Variables de personalidad, alteraciones psicopatológicas y trastornos de personalidad en pacientes con dependencia de alcohol en función de la tipología de Cloninger  

Microsoft Academic Search

En este estudio se lleva a cabo una investigación sobre los diferentes tipos de alcohol-dependientes se- gún la tipología de Cloninger en dimensiones de personalidad, características psicopatológicas y tras- tornos de personalidad. La muestra constó de 158 alcohol-dependientes en tratamiento (56 sujetos del tipo I y 102 del tipo II). Se les administraron diversas pruebas de personalidad (la Escala de

Enrique Echeburúa; Ricardo Bravo de Medina; Javier Aizpiri

493

ATIVIDADE ANTIMICROBIANA DE Jacaranda mimosaefolia D. DON  

Microsoft Academic Search

RESUMO: Foram realizados ensaios microbiológicos para avaliar a atividade antibacteriana e antifúngica do extrato aquoso de folhas de Jacaranda mimosaefolia D. Don, contra quatro diferentes microrganismos. O extrato aquoso apresentou resultados significativos frente a Staphylococcus aureus ATCC 6538P, Staphylococcus epidermidis ATCC 12128, Escherichia coli ATCC 10536 e contra Saccharomyces cerevisiae ATCC 2601. Verificou-se, porém, diâmetros maiores nas zonas de inibição

494

Frecuencia de Listeria monocytogenes en muestras de tomates (Lycopersicum esculentum) y cilantro (Coriandrum sativum) frescos en tres supermercados de Valencia. Venezuela  

Microsoft Academic Search

RESUMEN. Se determinó la frecuencia de L. monocytogenes en tomates y cilantro, de tres diferentes supermercados, ubicados en el Municipio Valencia, Estado Carabobo, durante ocho semanas. Se evaluaron 192 muestras: 96 de tomates y 96 de cilantro. Procesa- miento y análisis microbiológico, según Normas Industriales COVENIN 3718:2001. Paquete estadístico SPSS versión 12.0. Se aplicó prueba de Kolmogorov Smirnov, test de

Luis Guillermo; Ramírez Mérida; Alba Morón de Salim; Ana Yudith; Alfieri Graterol; Orlando Gamboa

495

Hacia el Enlace entre la Estrategia Empresarial Mediante Modelos de Valor y el Software Mediante Modelos de Negocio: un Enfoque MDD  

Microsoft Academic Search

Uno de los objetivos del modelado de negocio es compren- der el funcionamiento de las empresas con el fin de aportar soluciones software de alto valor anadido. Estos modelos de negocio se ubican en diferentes perspec- tivas, desde aquellas mas cercanas a la estrategia del negocio, hasta las mas cercanas al software. A pesar de la importancia del modelado de

José Bocanegra; Antonio Ruiz-Cortés

496

Consecuencias del efecto Bullwhip según distintas estrategias de gestión de la cadena de suministro: modelado y simulación = Bullwhip Effect Consequences according to Different Supply Chain Management Strategies: Modelling and Simulation  

Microsoft Academic Search

El efecto Bullwhip es uno de los principales causantes de las inestabilidades en el proceso de gestión de demanda que se producen a lo largo de la cadena de suministro. El presente artículo expone un modelo capaz de recrear diferentes escenarios para la gestión de demanda en una cadena de suministro determinada, con independencia del número de niveles definidos en

Francisco Campuzano Bolarín; Francisco Cruz Lario Esteban; Lorenzo Ros McDonnell

2008-01-01

497

Lo que usted necesita saber sobre™ el cáncer de pulmón  

Cancer.gov

Folleto que describe las opciones de tratamiento, los diferentes médicos que tratan el cáncer de pulmón, la obtención de una segunda opinión, los cuidados de seguimiento y las fuentes de apoyo para alguien que ha sido diagnosticado recientemente con cáncer de pulmón.

498

RADIAÇÃO LUMINOSA E FOTOSSÍNTESE EM QUATRO ESPÉCIES LENHOSAS NO INTERIOR DE UM FRAGMENTO DE FLORESTA SECUNDÁRIA SEMIDECIDUAL  

Microsoft Academic Search

valiou-se a ocorrência de picos de radiação luminosa e a resposta fotossintética de espécies arbóreas em um fragmento de floresta secundária semidecidual, no domínio da Floresta Atlântica. Os três locais estudados apresentavam exposições das encostas e índice de área foliar diferentes. Os resultados mostraram que existe uma marcante variabilidade na intensidade de radiação luminosa no interior do fragmento devido à

José Eduardo; Macedo Pezzopane; Geraldo Gonçalves; Maria das Graças; Ferreira Reis; Sílvio Nolasco de Oliveira Neto; Pedro Higuchi

2003-01-01

499

Identificación de variables en el proceso de decisión de compra de materiales autoadhesivos  

Microsoft Academic Search

El objetivo de la mayoría de las compañías se centra en obtener el liderazgo de su respectivo mercado, desarrollando diferentes estrategias, las cuales buscan ganar la preferencia del cliente en el momento de seleccionar una marca. Como variable crítica para lograrlo se encuentra la generación de una ventaja competitiva que lo diferencie de sus competidores. Sin embargo, la construcción de

David Gómez Gómez

2001-01-01

500

Indicadores antropométricos de obesidade abdominal: revisão dos artigos indexados na biblioteca SciELO Anthropometric indicators of abdominal obesity: review of the papers indexed on SciELO electronic library  

Microsoft Academic Search

Resumo - Recorreu-se à revisão sistemática de artigos originais publicados no período de 1993 a 2007 e indexados na Scientific Electronic Library Online - SCIELO, a fim de identificar os indicadores antropométricos utilizados na detecção da obesidade abdominal em diferentes subgrupos populacionais e sintetizar os resultados observados quanto à relação entre estes indicadores e comorbidades associadas à obesidade. Na análise

Egito Carvalho; Mauro Virgilio; Gomes de Barros